CN110741519B

CN110741519B - Fresh-keeping device

Info

Publication number: CN110741519B
Application number: CN201780091326.1A
Authority: CN
Inventors: 近藤加奈子; 后藤锦隆
Original assignee: Individual
Current assignee: GOTO KANETAKA
Priority date: 2017-11-14
Filing date: 2017-11-14
Publication date: 2021-08-24
Anticipated expiration: 2037-11-14
Also published as: JP6366882B1; CN110741519A; IL274043A; RU2020113554A3; JPWO2019097591A1; MA49596A1; RU2020113554A; MA49596B1; RU2771020C2; WO2019097591A1; JOP20200112A1

Abstract

A voltage applying device (3) mounted on the fresh-keeping device, and provided with a feedback control circuit (32) for returning one terminal (36a) of a secondary coil (36) of the transformer (31) to the other terminal (35a) of a primary coil (35) of the transformer (31); an output control unit (33) connected to the other terminal (36b) of the secondary coil (36); and a voltage adjustment unit (41) that converts the voltage value of an AC voltage (VL3) input from an AC power supply into a plurality of different voltage values and applies the converted voltage values to the primary coil (35) to adjust the voltage value of the AC voltage (VL 1).

Description

Fresh-keeping device

Technical Field

The invention relates to a fresh-keeping device, a fryer, a space potential generating device, a water activating device, a cultivating device, a drying device, a maturing device, a cultivating device and an air conditioning device.

Background

In the equipment for keeping fresh of raw and fresh products, an alternating electric field is formed in the range of the fresh-keeping space of the equipment, and food is kept fresh in the space formed by the alternating electric field, and the fresh-keeping device is available at present. The fresh-keeping device is provided with a space potential generating device which forms an alternating electric field in a fresh-keeping space. The space potential generating device is provided with an electrode part and a voltage applying device for applying alternating voltage to the electrode part.

International publication No. 2015/122070 (patent document 1) discloses a fresh food apparatus including a transformer including a primary coil and a secondary coil magnetically coupled to each other; a feedback control circuit that returns one side terminal of the secondary coil to the other side terminal of the primary coil so as to adjust a voltage of the secondary coil; an output control device connected to the other side terminal of the secondary coil to apply low frequency vibration to the output of the secondary coil; and an electrostatic discharge device made of a conductive material connected to a terminal of the secondary coil through the output control device. The static electricity discharged from the electrostatic discharge device forms an electric field with a fixed voltage in the space around the electrostatic discharge device, and the technology is also disclosed.

Further, patent document 1 discloses a technique for forming an electric field in a fresh food space by static electricity discharged from a static electricity discharge device in a space potential generating device in a fresh food device and applying a voltage to a fresh food or the like in the space to keep the food fresh.

Prior art document International publication No. 2015/122070.

Problems to be solved by the invention

The fresh-keeping device comprises the following devices: a demarcating part demarcating a fresh-keeping space, such as a storage part of a refrigerator; an electrode part arranged in the fresh-keeping space; and a voltage applying device. The space potential generating device formed by the electrode part and the voltage applying device can keep the fresh of the fresh-keeping products in the fresh-keeping space by forming an alternating electric field in the fresh-keeping space. Therefore, the initial investment cost and the long-term operation cost of the fresh-keeping device are both reduced, and meanwhile, the alternating electric field formed by the space potential generating device can ensure that the freshness of the fresh-keeping products in the fresh-keeping space is better preserved.

However, in the fresh food apparatus, it is difficult to adjust the voltage value of the alternating voltage applied to the electrode portion. Therefore, the intensity of the alternating electric field formed by the space potential generating device is also difficult to set according to the type, quantity or packaging condition of the fresh food, and the temperature or humidity in the fresh-keeping space. Therefore, it is difficult to improve the effect of the alternating electric field on the freshness retaining treatment, to control the influence range of the electric field, and to adjust the size of the target space.

Moreover, when the above-mentioned fresh-keeping device is equipped with the space potential generating device, the effect of the alternating electric field formed by the space potential generating device is difficult to be improved more, or the difficulty of controlling the influence range of the electric field and adjusting the size of the target space is difficult to be solved, which is not only in the fresh-keeping device. Such as a fryer, a water activating device, a breeding device, a drying device, a maturing device, a culturing device, or other processing devices equipped with a space potential generating device, there is also a problem that it is difficult to improve the effect of the alternating electric field formed by the space potential generating device more greatly, or to control the range of influence of the electric field and to adjust the size of the target space.

The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to reduce initial investment cost and long-term running cost of a fresh keeping apparatus, a fryer or other processing apparatus equipped with a space potential generating device, improve performance effect of an alternating electric field generated by the processing apparatus, and provide a processing apparatus capable of controlling a target space of the electric field.

Disclosure of Invention

The invention disclosed in the present application is summarized as follows.

The invention relates to a fresh-keeping device, which is a device for forming an alternating electric field in a space range for keeping fresh of fresh products and keeping fresh of food in the space formed by the alternating electric field. The fresh-keeping device is provided with a part defined as a fresh-keeping space, an electrode part arranged in the fresh-keeping space, and a voltage applying device for applying a 1 st alternating voltage to the electrode part. The voltage applying device includes a primary coil to which an AC voltage is applied by an AC power source, a secondary coil magnetically connected to the primary coil, a transformer including the primary coil and the secondary coil, a feedback control circuit for returning one terminal of the secondary coil to the other terminal of the primary coil to adjust a voltage of the secondary coil, and an output control device connected to a terminal of the secondary coil to apply a low-frequency vibration to an output of the secondary coil. The voltage application device is provided with a voltage adjustment unit that converts a voltage value of a 3 rd alternating-current voltage input from an alternating-current power supply into a plurality of different voltage values, and applies the 3 rd alternating-current voltage converted into the voltage value as a 2 nd alternating-current voltage to the primary coil, thereby adjusting the voltage value of the 1 st alternating-current voltage. Then, the electrode portion is connected to the other terminal of the secondary coil through the output control device.

In another mode, the 2 nd ac voltage is applied to the primary coil by an ac power supply. The voltage applying apparatus may further include a voltage adjusting unit that converts a voltage value of a 3 rd ac voltage input from the ac power supply into a plurality of different voltage values, and applies the 3 rd ac voltage whose voltage value is converted to the primary coil as a 2 nd ac voltage, thereby adjusting a voltage value of the 1 st ac voltage.

The other characteristic is that the fresh-keeping device releases static electricity into the fresh-keeping space through the electrode part, an alternating electric field is formed in the fresh-keeping space, and the fresh-keeping is carried out on the food by applying the alternating electric field to the fresh-keeping product.

The other characteristic is that the voltage applying device applies the 1 st alternating voltage with the frequency of 20-100 Hz to the electrode part.

The other characteristic is that the fresh-keeping device does not need to be provided with a grounding electrode.

The other characteristic is that the current flowing through the secondary coil is 0.002-0.2A.

Another feature is that the electrode portion is the 1 st electrode, and the voltage application means need not be connected to any other electrode than the 1 st electrode. The electrode portion has a plate-like portion including a main surface, and the plate-like portion includes a plurality of openings constituting the main surface, but not all the electrode portions need to have the plate-like portion. For example, even a plate laminated with aluminum foil can be used as a discharge plate for the electrode portion. In addition, the plate can be used as a discharge plate for an electrode portion, that is, an output discharge plate for outputting an alternating current, and can have the same effect by using only a high-voltage wire and forming the plate to have a waterproof effect. Even if the electrodes are attached to various materials or are brought into contact with the electrodes, the materials can be discharge materials and function as output portions.

The other characteristic is that the surface of the electrode part can be coated with photocatalyst or oxygen catalyst.

The refrigerator is characterized in that the boundary part is a refrigerator, the fresh-keeping space is the space inside the refrigerator or embedded on the wall of the refrigerator or on the shelf, and the electrode part is arranged in the refrigerator. The demarcated portion may be a freezer other than a refrigerator or a storage room in a room temperature environment.

Another aspect of the present invention is a fryer comprising an oil bath for storing oil, an electrode unit installed in the oil bath, and a voltage applying unit for applying a 1 st ac voltage to the electrode unit to form an ac electric field in the oil bath. The voltage applying device includes a primary coil to which an AC voltage is applied by an AC power source, a secondary coil magnetically connected to the primary coil, a transformer including the primary coil and the secondary coil, a feedback control circuit for returning one terminal of the secondary coil to the other terminal of the primary coil to adjust a voltage of the secondary coil, and an output control device connected to a terminal of the secondary coil to apply a low-frequency vibration to an output of the secondary coil. The voltage application device is provided with a voltage adjustment unit that converts a voltage value of a 3 rd alternating-current voltage input from an alternating-current power supply into a plurality of different voltage values, and applies the 3 rd alternating-current voltage converted into the voltage value as a 2 nd alternating-current voltage to the primary coil, thereby adjusting the voltage value of the 1 st alternating-current voltage. Then, the electrode portion is connected to the other terminal of the secondary coil through the output control device.

In another feature, the voltage adjusting unit may include a resistance element provided between the first interface as one interface of the primary coil or the other interface of the primary coil and the ac power source, and the first terminal supplies power to the ac power source through the resistance element or switches the first interface to the ac power source without passing through the resistance element.

In another feature, the fryer discharges static electricity into the oil bath through the electrode portion to form an alternating electric field within the oil bath, wherein the alternating electric field is applied to the oil stored in the oil bath.

Another feature is that the fryer assembly does not require the provision of a ground electrode.

The other characteristic is that the current flowing into the secondary coil is 0.002-0.2A.

The other characteristic is that the electrode part is the 1 st electrode, and the voltage applying device is not electrically connected with any electrode except the 1 st electrode.

One form of the present invention is a space potential generating device, which is a space potential generating device capable of forming an alternating electric field. The device is provided with an electrode part and a voltage applying device for applying a 1 st AC voltage to the electrode part. The voltage applying device includes a primary coil to which an AC voltage is applied by an AC power source, a secondary coil magnetically connected to the primary coil, a transformer including the primary coil and the secondary coil, a feedback control circuit for returning one terminal of the secondary coil to the other terminal of the primary coil to adjust a voltage of the secondary coil, and an output control device connected to a terminal of the secondary coil to apply a low-frequency vibration to an output of the secondary coil. The voltage application device is provided with a voltage adjustment unit that converts a voltage value of a 3 rd alternating-current voltage input from an alternating-current power supply into a plurality of different voltage values, and applies the 3 rd alternating-current voltage converted into the voltage value as a 2 nd alternating-current voltage to the primary coil, thereby adjusting the voltage value of the 1 st alternating-current voltage. Then, the electrode portion is connected to the other terminal of the secondary coil through the output control device.

The other characteristic is that static electricity is discharged to the periphery of the electrode part through the electrode part, and an alternating electric field is formed around the electrode part.

Another feature is that the space potential generating apparatus does not need to be provided with a ground electrode.

One form of the present invention is a water activation device equipped with the above-described space potential generation device and a water tank for storing water. The electrode part is arranged in the water tank. The water activation device forms an alternating electric field in the water tank to activate the water stored in the water tank.

The water activating device can discharge static electricity into the water tank through the electrode part to form an alternating electric field in the water tank, and the alternating electric field is applied to the water to activate the water.

One form of the invention is a culture device which is provided with the space potential generating device and a water tank for storing water. The electrode part is arranged in the water tank. The device can form an alternating electric field in the water tank, and aquatic organisms are cultured in the water tank forming the alternating electric field.

In another embodiment, the cultivation apparatus may discharge static electricity into the water tank through the electrode unit to form an alternating electric field in the water tank, and the alternating electric field may be applied to aquatic organisms to perform cultivation.

One embodiment of the present invention is a drying apparatus including the above-described space potential generating apparatus and a drying chamber for drying. This drying apparatus forms an alternating electric field in a drying chamber and dries the product in the drying chamber having the alternating electric field.

In another embodiment, the drying apparatus may be configured to discharge static electricity into the drying chamber through the electrode unit, form an alternating electric field in the drying chamber, and apply the alternating electric field to the object to be dried to dry the object.

One form of the present invention is a maturing apparatus equipped with the above-mentioned space potential generating apparatus. The electrode part is installed in a cooking space for cooking food. The ripening apparatus forms an alternating electric field in a ripening space to perform ripening.

Alternatively, the cooking device may cook food by discharging static electricity into the cooking space through the electrode unit, forming an alternating electric field in the cooking space, and applying the formed alternating electric field to the cooked food.

One form of the present invention is a culture apparatus equipped with the above-mentioned space potential generating apparatus. The electrode part is installed around the cultivated crop. The cultivating device forms an alternating electric field around the cultivated crop to cultivate the crop.

In another embodiment, the cultivating device may discharge static electricity around the cultivated plant by the electrode unit, form an alternating electric field around the cultivated plant, and apply the formed alternating electric field to the cultivated plant to perform cultivation.

One aspect of the present invention is an air conditioner equipped with the above-described space potential generating device. The electrode part is installed in an air conditioning space for adjusting the temperature, and an alternating electric field is formed in the space to adjust the air temperature.

In another embodiment, the air conditioning apparatus may discharge static electricity into the air-conditioned space through the electrode unit to form an alternating electric field in the air-conditioned space, and the formed alternating electric field may be applied to the air in the air-conditioned space to adjust the temperature of the air.

Effects of the invention

By using the invention, the early investment cost and the later operation cost of the fresh-keeping device, the fryer or other various processing devices which are provided with the space potential generating device can be reduced, the effect of the alternating electric field generated by various devices can be further improved, or the object space can be controlled.

Drawings

Fig. 1 schematically shows a cross-sectional view of an example of the fresh food apparatus according to embodiment 1.

Fig. 2 is a schematic plan view showing an example of an electrode unit provided in the refreshing apparatus according to embodiment 1.

Fig. 3 is a circuit diagram showing an example of the space potential generating apparatus according to embodiment 1.

Fig. 4 is a photograph showing beef frozen and then thawed in a freezer equipped with a fresh keeping device in comparative example 3 and example 3.

Fig. 5 is a photograph comparing the shrimps of example 3 and example 3 frozen in the freezer compartment of the refrigerator equipped with the fresh keeping device and then thawed.

Fig. 6 is a photograph comparing the frozen and thawed abalone in the freezer of the refrigerator equipped with the fresh keeping device in example 3 and example 3.

Fig. 7 is a photograph showing pork frozen and then thawed in a freezer of a refrigerator equipped with a fresh keeping apparatus in comparative example 4 and example 4.

Fig. 8 is a photograph comparing the fish frozen in the freezer of the refrigerator equipped with the fresh keeping apparatus and then thawed in case 5 and example 5.

Fig. 9 is a photograph showing chestnuts frozen and preserved in a freezer of a refrigerator equipped with a fresh keeping device in comparative example 6 and example 6.

Fig. 10 is a schematic front view (including a partial cross section) showing a first modification of the fresh food apparatus according to embodiment 1.

Fig. 11 schematically shows a side view (including a partial cross section) of a second modification of the freshness retaining device according to embodiment 1.

Fig. 12 is a schematic plan view showing a third modification of the freshness retaining device according to embodiment 1.

Fig. 13 is a schematic side view showing a fourth modification of the freshness retaining device according to embodiment 1.

Fig. 14 schematically shows an example of a cross-sectional view of the fryer assembly of embodiment 2.

Fig. 15 is a schematic cross-sectional view showing an example of a water activating device according to embodiment 3.

FIG. 16 is a schematic cross-sectional view showing an example of a culture apparatus according to embodiment 4.

Fig. 17 is a schematic cross-sectional view showing an example of the storage apparatus according to embodiment 5.

Fig. 18 is a schematic perspective view showing an example of the storage device according to embodiment 5.

Fig. 19 compares photographs of plants stored with the storage device in example 8 and example 8.

Fig. 20 compares photographs of plants stored with the storage device in example 8 and example 8.

Fig. 21 is a schematic cross-sectional view showing an example of the drying apparatus according to embodiment 6.

Fig. 22 is a schematic side view (including a partial cross section) showing a modification of the drying apparatus according to embodiment 6.

FIG. 23 is a schematic cross-sectional view showing an example of the ripening apparatus according to embodiment 7.

FIG. 24 is a table comparing the results of measuring the glutamic acid content in beef matured with the maturation apparatus in example 12 with those in example 12.

FIG. 25 is a schematic cross-sectional view showing an example of the culture device according to embodiment 8.

Fig. 26 is a schematic perspective view of an air conditioner according to embodiment 9.

Detailed Description

Various embodiments of the present invention will be described below with reference to the drawings.

In addition, the cases disclosed in the present specification are only some examples, and those skilled in the art can create inventions while maintaining the main core of the inventions and making certain changes and innovations, and the inventions also fall within the scope of the present invention. The drawings shown herein are for the purpose of illustrating the present invention more clearly, and the length, width, thickness and shape of each part are schematically shown, and are only an example, and do not represent that the present invention is limited to the above-mentioned specifications.

In the present specification and the drawings, the same reference numerals are given to the same elements as those in the previous drawings, and detailed description is omitted as appropriate.

In the drawings of the embodiments, a diagonal line drawing (diagonal hatching) for distinguishing different materials may be omitted as appropriate.

In the embodiments, when ranges from a to B are used, unless otherwise specified, the ranges are greater than a and less than B.

Embodiment mode 1

First, a fresh keeping apparatus and a space potential generating apparatus provided with the fresh keeping apparatus, which are one of the embodiments of the present invention, will be described.

< fresh-keeping device >

First, the fresh keeping apparatus according to embodiment 1 will be explained. The fresh-keeping device of embodiment 1 is a device that forms an alternating electric field in a space for keeping fresh of raw and fresh products, and keeps fresh of the raw and fresh products in the fresh-keeping space in which the alternating electric field is formed. The fresh keeping device according to embodiment 1 is provided with a space potential generating device that forms an alternating electric field.

Fig. 1 is a schematic cross-sectional view showing an example of the fresh food apparatus according to embodiment 1. Fig. 2 is a schematic plan view showing an example of an electrode unit provided in the refreshing apparatus according to embodiment 1.

The refreshing apparatus according to embodiment 1 is mounted on a refrigerator, such as a general household refrigerator, as a boundary portion that defines a refreshing space, and a case of this will be described below. However, in the first and third modifications of embodiment 1 to be described later, as described with reference to fig. 10 to 12, the freshness retaining device of embodiment 1 may be attached to a boundary portion that defines a fresh food space, other than a household refrigerator. Alternatively, in a fourth modification of embodiment 1 to be described later, as described with reference to fig. 13, the fresh food keeping device of embodiment 1 may not be provided with a partition for partitioning the fresh food keeping space.

As shown in fig. 1, the refreshing apparatus according to embodiment 1 includes a refrigerator 1, an electrode unit 2, and a voltage applying unit 3. The refrigerator 1 comprises a part of fresh-keeping space 5 which is delimited, the space delimited by the fresh-keeping space 5 is used for keeping fresh of fresh-keeping products 4, and the fresh-keeping space 5 is contained in the refrigerator 1. The refrigerator 1, as previously described, may refer to a general household refrigerator. The electrode part 2 is installed in the fresh keeping space 5 delimited by the delimiting part. In other words, the electrode part 2 is installed inside the refrigerator 1. The voltage application device 3 is built in the back surface of the refrigerator 1, and by applying an alternating voltage VL1 (refer to fig. 3 hereinafter) to the electrode portion 2, an alternating electric field is formed around the electrode portion 2. The electrode portion 2 and the voltage applying means 3 constitute electric field generating means as alternating electric fields, i.e., space potential generating means. Meanwhile, the electrode portion 2 is also an electrostatic discharge portion that discharges static electricity in the fresh space 5. That is, the electrode portion 2 is an electrostatic discharge portion including all of the air-potential generating device 6.

In the fresh-keeping device according to embodiment 1, static electricity is discharged into the fresh-keeping space 5 through the electrode portion 2, an alternating electric field is formed in the fresh-keeping space 5, that is, around the electrode portion 2, and the formed alternating electric field is applied to the fresh-keeping product 4, thereby keeping the fresh-keeping product 4 fresh. At this time, under the influence of the alternating electric field, water molecules in the fresh food 4 are irradiated by the electromagnetic wave of the specific frequency, and the cells are activated, so that the fresh food 4 can be preserved for a long time.

In addition, the fresh products in the specification of the application comprise vegetables, fruits, flowers and other crops, such as agricultural and livestock products like meat and aquatic products like fishes and shellfishes.

As shown in fig. 1, the space inside the refrigerator 1, i.e., the fresh food space 5, is partitioned into three spaces, i.e., a low-temperature fresh food compartment 13 at the uppermost layer, a refrigerating compartment 14 at the intermediate layer, and a vegetable compartment 15 at the lowermost layer, by a partition plate 11 and a partition plate 12. Thus, in the example of fig. 1, the low-temperature fresh food compartment 13, the refrigerating compartment 14, and the vegetable compartment 15 together constitute the fresh food space 5.

Inside the partition plate 11 between the low-temperature fresh keeping compartment 13 and the refrigerating compartment 14, there is provided an electrostatic discharge section including the space potential device 6, i.e., the electrode section 2. In this case, the partition plate 11 also serves as an insulating member covering the surface of the electrode portion 2 to perform an insulating function. Thus, the electrode part 2 is mounted inside the partition plate 11, the electrode part 2 is not visible from the outside, the appearance is more comfortable, and even if a strong current flows through the electrode part 2 by mistake, the user does not directly touch the electrode part 2, so that the electric shock caused by the direct contact of the user with the electrode can be effectively prevented.

Further, since the electrode portion 2 is mounted inside the partition plate 11, the intensity of the alternating electric field in the low-temperature fresh food compartment 13 and the refrigerating compartment 14 close to the electrode portion 2 becomes strong, and the intensity of the alternating electric field in the vegetable compartment 15 distant from the electrode portion 2 becomes weak, whereby an alternating electric field having a strength required for the fresh food 4 suitably stored therein can be obtained.

However, although the electrode portion 2 is mounted inside the partition plate 11 in fig. 1, the position where the electrode portion 2 is mounted is not limited to the position illustrated in fig. 1. That is, the electrode plate 2 may be installed anywhere, such as inside a back plate, a top plate, or other partition plate of the refrigerator 1.

In the example shown in fig. 1, the electrode portion 2 is made of a plate-like conductive material. The electrode portion 2 may be flat or curved.

As shown in fig. 2, the electrode portion 2 is preferably provided with a plate-like portion 22 including a main surface 21. This allows the electrode portion 2 to be easily mounted inside the partition plate 11.

As shown in fig. 2, the plate-like portion 22 is preferably formed by the main surface 21 and has a plurality of recessed portions or holes, i.e., a plurality of opening portions 23. The shape of the opening 23 may be circular or hexagonal when viewed from a perspective perpendicular to the main surface 21 of the plate-like portion 22. Since the plate-like portion 22 has such a circular or hexagonal opening 23, the alternating electric field is concentrated at the edge of the opening 23, and static electricity is more easily discharged from the electrode portion 2 to the periphery of the fresh food 4. However, the electrode portion 2 does not necessarily have the plate-shaped portion 22. For example, a laminated aluminum foil plate may be used as the discharge plate for the electrode portion 2. In addition, the plate may be a discharge plate serving as the electrode portion 2, that is, an output discharge plate that outputs an alternating current, and may have the same effect by using only a high-voltage wire and forming the plate to have a waterproof effect. Not only the electrical conductivity of aluminum, copper, steel, iron, carbon, and the like, but also various materials can be used when connecting to the output portion.

When a plate-shaped output plate is used as the electrode portion 2, the waterproof performance of the electrode portion 2 is improved, the weight reduction of the electrode portion 2 is facilitated, the electrode portion 2 is more easily mounted, and the reduction in thickness of the electrode portion 2 is facilitated.

The output plate may be formed from aluminum as described above or may be machined from carbon. For the output plate made of carbon, for example, a specification of 25cm by 1mm thick can be used. For example, an output plate manufactured by a carbon processing method has a weight of 80 g, and it is easier to reduce the weight of the electrode portion 2 and to mount the output plate, compared to output plates made of other materials.

In addition, the output plate made of carbon is reduced in the resistance of the electrode part 2 and enhanced in the conductivity of the electrode part 2, so that the effect and effective range of the alternating electric field are increased by 2 times of those of the output plate made of other materials. Specifically, the resistance of the output plate made of carbon can be reduced to 5 to 40 Ω, and for example, the output plate made of aluminum can form an alternating electric field of the same intensity at a position 3m away from the alternating electric field, and the output plate made of carbon can form an alternating electric field of the same intensity at a position 5m away from the alternating electric field.

In addition, a ceramic powder which easily emits far infrared rays may be added to the output plate made of carbon. For example, tourmaline may be used as the ceramic, and the particle size of the powder may be 200 μm. Far infrared ceramics such as tourmaline are easy to generate negative ions, and can further increase the effect and effective range of the alternating electric field. In addition, the output plate made of carbon may be coated with photocatalyst such as titanium oxide or oxygen catalyst to further enhance the freshness-retaining effect.

The electrode unit 2 may be installed inside the low-temperature fresh food compartment 13, the refrigerating compartment 14, or the vegetable compartment 15 without being installed in the partition plate. In this case, when the fan installed in the refrigerator 1 circulates the air in the refrigerator 1 under the condition that the plate-shaped portion 22 has the circular or hexagonal opening 23 on the upper surface, the electrode portion 2 does not interfere with the circulation of the air, and the freshness keeping conditions including the electric field strength in the low temperature freshness keeping chamber 13, the cold storage chamber 14, and the vegetable chamber 15 can be easily uniformized.

In addition, the main surface 21 of the plate-like portion 22 of the electrode portion 2, or the back surface of the main surface 21, may be provided with an insulating portion. Or the surface of the plate-like portion 22 may be covered with an insulating portion. Alternatively, the freshness retaining device uses an insulating portion covering the surface of the electrode portion 2. This is more secure than the plate-like portion 22 leaking outside, and even if a problem occurs, the secondary coil does not get an electric shock when a strong current flows therein, and the occurrence of corona discharge can be prevented.

The surface of the insulating portion may have a recess or a hole similar to the opening 23, that is, an opening, or the surface of the insulating portion may be flat, but does not include an opening. In this case, the plate-shaped portion 22 should have a water-repellent effect of preventing the electrode portion 2 from coming into contact with water. In addition, the surface of the flat insulating portion may be coated with a photocatalyst such as titanium oxide or an oxygen catalyst. Having a flat surface and having an insulating portion coated with a photocatalyst, ethylene generated from the fresh food 4 in the low-temperature fresh-keeping chamber 13, the refrigerating chamber 14, the vegetable chamber 15, i.e., the fresh-keeping space 5 can be removed. Further, since the photocatalyst or the oxygen catalyst is effectively coated on the surface of the electrode portion 2, it is also effective to coat the surface of the electrode without coating the surface of the insulating portion.

< space potential generating device >

The following describes a space potential generating apparatus according to embodiment 1. The space potential generating device according to embodiment 1 is an electric field forming device capable of generating an alternating electric field. The space potential generating device according to embodiment 1 is a space potential generating device that is held in the fresh keeping device according to embodiment 1.

Fig. 3 is a circuit diagram of the space potential generating apparatus of embodiment 1. As shown in fig. 3, the voltage application device 3 includes a transformer 31, a feedback control circuit 32, an output control section 33, and an output terminal 34. The transformer 31 includes a primary coil 35 and a secondary coil 36 that are magnetically coupled to each other.

The primary coil 35 applies an ac voltage VL2 from an ac power supply. As shown in fig. 3, a commercial power supply (not shown) is connected through an AC input socket 37 using an AC power supply.

In addition, a breaker 38 may be provided between the AC input socket 37 and the primary coil 35, and a switching element 39 may be provided between the breaker 38 and the primary coil 35. Further, for example, an alternating current power supply or other various alternating current power supplies obtained by providing a secondary battery inside or outside the voltage application device 3, or other various direct current power supplies and converting them by an inverter circuit may be used.

The terminal 36a on the secondary coil 36 side is connected to the terminal 35a on the primary coil 35 side via the feedback control circuit 32. In addition, the feedback control circuit 32 adjusts the voltage in the secondary coil 36. In other words, the feedback control circuit 32 returns the one terminal 36a of the secondary coil 36 to the one terminal 35a of the primary coil 35 to adjust the voltage in the secondary coil 36.

The output control section 33 is provided between the other terminal 36b of the secondary coil 36 and the output terminal 34. Further, the output control unit 33 applies low-frequency vibration to the output voltage of the secondary coil 36. In other words, the output control unit 33 applies low-frequency vibration to the output voltage of the secondary coil 36 by connecting the other terminal 36b of the secondary coil 36.

The electrode portion 2 is connected to a terminal on the side of the secondary coil 36 of the output control portion 33 opposite to the output terminal 34, that is, the other terminal 36b side of the secondary coil 36 of the output control unit 33, via a power supply line 24 (see fig. 1) formed of a conductive wire. Therefore, the electrode portion 2 is connected to the other terminal 36b of the secondary coil 36 via the power supply line 24 and the output control portion 33.

According to the voltage applying device 3 described above, the current generated on the secondary coil 36 side by the feedback control circuit 32 is fed back to the primary coil 35, and the secondary coil 36 can be made to obtain a high voltage with a small number of turns. In addition, the feedback control circuit 32 and the output control section 33 are configured to cause a delay in the circuit, and therefore, a low-frequency vibration of, for example, 20 to 100Hz can be applied to the secondary coil 36.

Further, the feedback control circuit 32 connects the one terminal 36a of the secondary coil 36 to the one terminal 35a of the primary coil 35 to adjust the voltage at the secondary coil 36, and as a result, miniaturization of the voltage application device 3 can be achieved.

As described above, the fresh-keeping device according to embodiment 1 forms the alternating electric field in the fresh-keeping space 5 for keeping fresh of the fresh food 4, and keeps fresh of the fresh food 4 in the fresh-keeping space 5 in which the alternating electric field is formed. Specifically, static electricity is discharged from the electrode portion 2 into the fresh keeping space 5, an alternating electric field is formed in the fresh keeping space 5, and the formed alternating electric field is applied to the fresh food 4 to keep the fresh food 4 fresh.

At this time, the water molecules in the fresh produce 4 are irradiated with electromagnetic waves of a specific frequency by the effect of the alternating electric field, and the cells are activated. When the fresh food 4 is rotten, electrons reduced by oxidation of the fresh food 4 are supplied to prevent oxidation of the fresh food 4 and inhibit movement of bacteria. That is, the fresh-keeping device of embodiment 1 is provided with the space potential generating device 6, and the fresh food 4 is kept fresh for a long time by the influence of the alternating electric field.

Furthermore, the cells in the fresh produce 4 are subjected to a cluster effect and a positive/negative electron charging effect, thereby suppressing the oxidation of the cells. But also can sterilize and disinfect the fresh food 4 and inhibit the reproduction of bacteria.

Under the condition of applying an alternating electric field, the chicken cannot be frozen to-5 ℃, and the beef, the pork and the fish cannot be frozen to-7 ℃, so that the fresh products can be stored at low temperature without freezing. Therefore, when the frozen object is thawed, the tissue is not worried about to be damaged, and the long-term fresh keeping without freezing can be realized.

The refreshing apparatus according to embodiment 1 includes a refrigerator 1 including a general household refrigerator, an electrode unit 2, and a voltage applying device 3. Also, as described above, due to the efficacy of the alternating electric field, long-term preservation of the fresh food 4 can be achieved. Therefore, the fresh-keeping device of embodiment 1 can reduce the cost for introducing and operating the fresh-keeping device, and the alternating electric field formed by the space potential generating device can improve the fresh-keeping effect of the fresh-keeping product 4.

On the other hand, the refreshing apparatus according to embodiment 1 generates a high voltage at the output of the secondary coil 36 and generates low-frequency vibration at the output of the secondary coil 36 by the effects of the feedback control circuit 32 and the output control unit 33. Therefore, even if the output of the terminal 36b is only one line, the electrode portion 2 can satisfactorily discharge static electricity from the electrode unit portion 2 to a low potential portion (for example, a ground portion), and a high-voltage alternating-current electric field is formed around the electrode portion 2 (specifically, within 360 ° of the electrode portion 2 having a radius of about 1.5 m). Therefore, an alternating current electric field can be formed around the fresh produce 4 without using two electrodes. Therefore, the structure of the fresh-keeping device can be simplified.

That is, in the freshness retaining device according to embodiment 1, if the electrode portion 2 is referred to as the 1 st electrode, the voltage applying device 3 does not need to be electrically connected to any electrode other than the 1 st electrode, and does not need to apply a voltage to any electrode other than the 1 st electrode. Therefore, the fresh-keeping effect of the fresh-keeping products 4 can be improved, and the structure of the fresh-keeping equipment can be simplified.

When the refrigerator is divided into a plurality of spaces such as a refrigerating chamber, a vegetable chamber and a freezing chamber, if an alternating electric field is formed in the refrigerator, an electrode plate needs to be installed in each space or two electrodes need to be installed in a conventional space potential generating device.

In the freshness retaining device according to embodiment 1, the electrode portion 2 functions as an antenna, and the amplitude of the alternating electric field applied to the space, that is, the voltage is not excessively small even at a position spaced apart from the electrode portion 2 in the freshness retaining space 5. Therefore, only one electrode is arranged on the electrode part 2, so that the aggregation effect and the positive and negative electron energy charging effect are exerted on the cells in the fresh food 4, the cell oxidation is inhibited, and the fresh food 4 can be sterilized and disinfected to inhibit the reproduction of bacteria.

However, the alternating electric field intensity formed in the fresh food space 5 is stronger closer to the electrode part 2 and vice versa. Therefore, according to the type of the fresh-keeping product 4 to be kept fresh, the fresh-keeping condition can be kept only by a weak electric field and the strong electric field is needed, and the optimal effect can be achieved by properly adjusting the relative positions of the electrode part 2 and the low-temperature fresh-keeping chamber 13, the refrigerating chamber 14 and the vegetable chamber 15.

The primary coil 35 is preferably applied with an alternating voltage VL2 by an alternating current power supply. Specifically, the voltage application device 3 applies an ac voltage input from an ac power supply to the primary coil 35 as an ac voltage VL 2.

Alternatively, a battery may be used as a power source of the voltage application device 3. Even in this case, since the power consumption of the voltage application device 3 is low, the battery can be operated for three days in a state where, for example, 16 first batteries are connected in parallel. Therefore, the space potential generating device 6 can also be applied to a movable apparatus such as an automobile.

Preferably, the output control unit 33 applies a voltage having a frequency of 20Hz to 100Hz to the output of the secondary coil 36. In other words, the voltage application device 3 applies an alternating voltage having a frequency of 20Hz to 100Hz to the electrode portion 2. When the voltage applied to the output of the secondary coil 36 by the output control unit 33 is 20Hz to 100Hz, water molecules contained in cells or the like in the fresh food 4 can be effectively activated, oxidation of cells or the like in the fresh food 4 can be effectively prevented, or the fresh food 4 can be sterilized, and propagation of bacteria can be suppressed, as compared to when the voltage applied to the output of the secondary coil 36 by the output control unit 33 is lower than 20Hz or higher than 100 Hz.

Preferably, the space potential generating device 6 is not connected to ground level. In other words, the fresh keeping device is not connected to ground level. This makes it easy to discharge static electricity from the electrode portion 2 provided (connected) to the other terminal 36b of the secondary coil 36.

The current flowing in the secondary coil 36 is preferably 0.002A to 0.2A. When the current flowing into the secondary coil 36 is 0.002A or more, water molecules contained in cells or the like in the fresh food can be effectively activated, oxidation of cells or the like in the fresh food 4 can be effectively prevented, or activities of bacteria or the like in the fresh food 4 can be effectively suppressed, as compared with the case where the current flowing into the secondary coil 36 is less than 0.002A. In addition, when the current flowing into the secondary coil 36 is 0.2A or less, the current flowing into the secondary coil 36 is a weak current as compared with the case where the current flowing into the secondary coil 36 exceeds 0.2A, and therefore there is no fear of electric shock.

According to the space potential generating device 6 of embodiment 1, in any place such as a freezer, a refrigerator, a thawing compartment, a showcase, a food storage compartment, an iso (international Organization for standardization) container, a transport truck, a room temperature warehouse, a refrigerator in a fishing boat, a refrigerator for medical use, or a freezer for medical use, if one electrode portion 2 is installed, a high-voltage alternating electric field is formed in the space (inside the refrigerator, inside the room, or inside the vehicle) where the electrode portion 2 is installed. Thus, the fresh-keeping function using the alternating electric field can be added to the application place simply at a low cost in a place where the application place is needed.

In addition, when a refrigerator, a freezer, a thawing chamber, a showcase, a food storage chamber, an ISO container, or a normal temperature warehouse is manufactured, the refrigerator, the thawing chamber, the showcase, the food storage chamber, the ISO container, or the normal temperature warehouse can be provided with a fresh-keeping function from the beginning by installing the electrode portion 2 in the wall, the ceiling, or the partition plate. In this case, if the electrode unit 2 is built in a wall, a ceiling, or a partition, the appearance can be more beautiful, and the electrode unit 2 is more secure than if it is exposed to the outside. In addition, the wall, the ceiling or the partition board can play an insulating role, special insulating materials are not needed, and the danger of electric shock can be avoided even though accidental strong current passes through.

In a large warehouse, a plurality of racks having a length of 8 meters or more are disposed, and in order to make it easier to take out a pallet or a forklift on the rack when the pallet is shipped from the rack, the rack is usually designed to be movable left and right. In this case, the electrode portion 2 and the shelf board are separated, and the electrode portion 2 can be easily mounted even on a movable shelf.

< Voltage adjustment part >

The voltage application device 3 mounted on the space potential generation device 6 of embodiment 1 further includes a voltage adjustment unit 41. The voltage regulator 41 converts the voltage value of the ac voltage VL3 input from the ac power supply into a plurality of different voltage values, and applies the ac voltage VL3 whose voltage value is converted to the primary coil 35 as the ac voltage VL2, thereby controlling the voltage regulator to operate in accordance with the voltage of the ac voltage VL3

And regulates the voltage value of ac voltage VL1 output to output terminal 34.

This enables the voltage value of ac voltage VL1 to be converted into, for example, two kinds of voltage values of high and low, or, for example, 3 kinds of voltage values of high, medium and low. Therefore, the intensity of the alternating electric field formed by the space potential generating device 6 in the fresh keeping space 5 can be adjusted and set according to the type and quantity of the fresh food 4, the packaging condition, or the temperature or humidity of the fresh keeping space 5. Therefore, the initial investment cost and the long-term operation cost of the fresh-keeping device can be reduced, and meanwhile, the effect of the alternating electric field formed by the space potential generating device can be better, or the influence range and the strength and the size of the object space can be better controlled.

The voltage regulator 41 preferably includes a resistance element 42 and a switching element 43. The resistance element 42 is provided between the terminal 35c, which is the one-side terminal 35a or the other-side terminal 35b of the primary coil 35, and the AC input socket 37, which is an alternating current power supply. In the example shown in fig. 3, the other terminal 35b of the primary coil 35 is the terminal 35c, but the one terminal 35a of the primary coil 35 may be the terminal 35 c.

The switching element 43 is used to switch whether the terminal 35c is connected to the AC power source, i.e., the AC input socket 37, via the resistance element 42 or the terminal 35c is directly connected to the AC power source, i.e., the AC input socket 37, without via the resistance element 42. Accordingly, the voltage value of the ac voltage VL2 applied to the primary coil 35 can be switched between the voltage value of the ac voltage VL3 input from the ac power supply and a voltage value smaller than the voltage value of the ac voltage VL3, and the voltage value of the ac voltage VL1 output to the output terminal 34 can be easily switched to two different voltage values.

As the resistance element 42, a variable resistor whose resistance value can be changed in a range centered around 50 Ω, for example, can be used. This allows the voltage value at the time of switching the voltage value of the ac voltage VL2 applied to the primary coil 35 to a voltage value smaller than the voltage value of the ac voltage VL3 to be further changed, and thus, when it is necessary to easily switch the voltage value of the ac voltage VL1 output to the output terminal 34 to two voltage values of different magnitudes, the voltage value can be more easily changed to a smaller voltage value.

Further, as shown in fig. 3, the voltage regulation section 41 may further include a surge absorber 44 connected in parallel with the resistance element 42. In this case, the switching element 43 is used to switch whether the terminal 35c is connected to the AC input socket 37, which is the alternating-current power supply, via the resistance element 42 and the surge absorber 44, which are connected in parallel with each other, or the terminal 35c is directly connected to the AC input socket 37, which is the alternating-current power supply, without via the resistance element 42 and the surge absorber 44, which are connected in parallel with each other. Accordingly, when a large voltage is suddenly applied to the resistance element 42 due to, for example, lightning strike or the like, the resistance value of the surge absorber 44 is suddenly reduced, and a current flows intensively to the surge absorber 44, so that the current flowing to the resistance element 42 can be reduced, and burning or the like of the resistance element 42 can be prevented.

Effect of alternating electric field affecting preservation treatment when installed at a demarcation section outside a refrigerator

Next, the effect of the alternating electric field that affects the freshness retaining process by the freshness retaining device of embodiment 1 will be described when the freshness retaining device is installed as a boundary section that defines the freshness retaining space in a boundary section outside the refrigerator.

First, a fresh-keeping apparatus without a space potential generating apparatus was used as comparative example 1, and a fresh-keeping apparatus equipped with a space potential generating apparatus 6, that is, a fresh-keeping apparatus according to embodiment 1 was used as embodiment 1.

The fresh-keeping apparatuses in comparative example 1 and embodiment 1 were installed in a fresh-keeping space defined by a delimiting part, i.e., a storage, and the size of the storage was 5m long by 6m wide by 2.5 m high. On the vertical wall of the storage as the fresh-keeping

space

5, 4 electrode parts 2 are installed at a position 1.5 m from the ground, and arranged in a row. The electrode unit 2 attached to the freshness retaining device of example 1 was constituted by electrode plates 40cm long by 25cm wide. The voltage applying device 3 applies an alternating voltage to the electrode portion 2 to discharge static electricity from the electrode portion 2, so that the voltage in the storage is 30V and the voltage applied to the food in the storage is 40V. The temperature in the daytime is 30 ℃, the temperature at night is 10 ℃, and the total amount of food materials is 3 tons. In the storage, the food materials are stored in plastic boxes and piled up to the height of less than 2 meters.

In the storage rooms equipped with the fresh-keeping devices in comparative example 1 and example 1, tomatoes were selected and compared for storage. The temperature in the storage warehouse is 10-30 ℃, and the storage period is from the first day to the 8 th day of the experiment.

As a result, the tomato weight of comparative example 1 was reduced by 30.34% by the time of storage on day 8, and the tomato was lost in water and rotted and vermin, which was not edible. The tomato weight of example 1 was reduced by 11.70%, and moisture and freshness were maintained well, which was a usable condition. That is, the weight loss was reduced by 74% in the example 1 as compared with the comparative example 1.

As can be seen from the above experimental results, when the fresh-keeping apparatus according to embodiment 1 is used, by providing the space potential generating device 6 and installing the electrode unit 2 in the fresh-keeping space 5, an alternating electric field having an appropriate strength is formed in the fresh-keeping space 5 in which the electrode unit 2 is installed, and the shelf life of the fresh food 4 at room temperature can be extended in the fresh-keeping space 5 in which the alternating electric field is formed.

(effect of alternating electric field affecting preservation treatment when using refrigerator >

Next, the effect of the alternating electric field that affects the freshness retaining process when the freshness retaining device of embodiment 1 is mounted on a refrigerator as a boundary section that defines the freshness retaining space will be described.

First, a fresh-keeping apparatus not equipped with a space potential generating device was used as comparative example 2, and a fresh-keeping apparatus equipped with a space potential generating device 6, that is, a fresh-keeping apparatus according to embodiment 1 was used as embodiment 2.

The refreshing apparatuses of comparative example 2 and embodiment example 2 were installed in a refrigerator, thereby forming a refreshing space having a width of 80cm, a height of 150cm, and a length of 50 cm. The electrode unit 2 installed in the fresh keeping apparatus of example 2 is composed of an electrode plate having a length of 30cm, a width of 15cm and a thickness of 1mm, and both upper and lower surfaces of the electrode plate are covered with plastic (Acrylonitrile), Butadiene (Butadiene), Styrene (Styrene) copolymer synthetic resin (ABS resin) plates) made of an insulating material. The insulating material covered on the electrode plate has a length of 40cm, a width of 35cm and a thickness of 4mm, and the insulating material covered under the electrode plate has a length of 40cm, a width of 35cm and a thickness of 4 mm.

In the refrigerators having the refreshing apparatuses in comparative example 2 and example 2, chicken was selected for comparison of cold storage. The voltage applied to the electrode portion 2 was set to 800V, and the voltage applied directly to the chicken meat was set to 30V. The temperature in the refrigerator was 5 ℃ and the shelf life was from the day of the start of the experiment to the day of 4.

As a result, by the fourth day, the chicken of comparative example 2 had run bloody water, and loss of nutrients resulted in deterioration of taste and discoloration of color. The chicken of example 2 was in a fresh state with little bleeding, and the color of the chicken was almost unchanged from that of the day on which the experiment was started.

In addition, in the refrigerators having the refreshing apparatuses in comparative example 2 and example 2, the effects of cold storage and preservation using spinach were compared. The voltage applied to the electrode portion 2 was set to 800V, and the voltage applied directly to spinach was set to 30V. The temperature in the refrigerator was 4 ℃ and the shelf life was from the day of the experiment to the first day until day 19.

As a result, by day 19, the spinach of comparative example 2 had withered and had a great change in appearance, and the spinach of example 2 had not withered and had little change in appearance.

As is clear from the above experimental results, when the fresh keeping apparatus according to embodiment 1 is used, by providing the space potential generating device 6 and installing the electrode portion 2 in the fresh keeping space 5, an alternating electric field having an appropriate strength is formed in the refrigerator 1 in which the electrode portion 2 is installed, and the shelf life of the fresh food 4 stored in the refrigerator 1 in which the alternating electric field is formed can be extended.

< preservation State of frozen fresh product in fresh-keeping device >

The preservation state of the fresh food frozen in the fresh food preservation device according to embodiment 1 will be described.

First, a fresh-keeping apparatus without a space potential generating apparatus was used as comparative example 3, and a fresh-keeping apparatus equipped with a space potential generating apparatus 6, that is, a fresh-keeping apparatus of embodiment 1 was used as embodiment 3.

The refreshing apparatuses of comparative example 3 and embodiment example 3 were installed in a freezing chamber of a refrigerator, thereby forming a refreshing space having a length of 60cm, a height of 80cm, and a width of 45 cm. The electrode unit 2 attached to the freshness retaining device of embodiment 3 was constituted by electrode plates having a planar shape of 10cm long by 5cm wide, and the upper and lower surfaces of the electrode plates were covered with plastic (PE plate) made of an insulating material. The size of the insulating material covered on the upper surface of the electrode plate is 12cm in width, 17cm in length and 7mm in thickness, and the size of the insulating material covered on the lower surface of the electrode plate is 12cm in width, 17cm in length and 6mm in thickness.

In the freezer of the refrigerator equipped with the fresh keeping device in comparative example 3 and example 3, beef was selected for comparison of frozen storage. The freezer compartment was at-24 ℃ for a freezing period from the day of the start of the experiment to the first day to the 7 th day. Then, the frozen beef was taken out on day 7 and thawed at 4 ℃ for 24 hours. The voltage applied to the electrode portion 2 was set to 1000V, and the voltage applied directly to the beef was set to 20V.

Fig. 4 is a photograph of the beef frozen and thawed in the freezer of the refrigerator equipped with the fresh keeping apparatus in comparative example 3 and example 3. The left side of fig. 4 is a photograph of the beef frozen and thawed in the freezer compartment of the refrigerator of comparative example 3, and the right side of fig. 4 is a photograph of the beef frozen and thawed in the freezer compartment of the refrigerator of example 3.

As shown in the left side of fig. 4, the thawed beef of comparative example 3 had 3.28% by weight of blood and had a loss of nutrients. On the other hand, as shown in the right side of FIG. 4, the thawed beef of example 3 was still fresh with only 0.69% by weight of blood flowing out.

The refreshing apparatuses of comparative example 3 and example 3 were installed in a freezing chamber of a refrigerator, and the i-type shrimps were selected for comparison of freezing. The temperature in the freezer was-24 ℃ and the freezing period was from the first day to the 7 th day of the experiment. Taking out the shrimps on the 7 th day, and thawing at normal temperature. The voltage applied to the electrode portion 2 was 1800V, and the voltage applied directly to the shrimps was 30V.

Fig. 5 is a photograph of the frozen and thawed illicit shrimps in the freezer of the refrigerator equipped with the fresh-keeping device in comparative example 3 and example 3. The left side of fig. 5 is a photograph of frozen and thawed i-n shrimps in the freezer compartment of the refrigerator of comparative example 3, and the right side of fig. 5 is the freezer compartment of the refrigerator of embodiment 3.

As shown in the left side of fig. 5, the thawed shrimp bodies of the i-type shrimps in comparative example 3 had softened, and the portion of the midgut line called shrimp paste had also deformed. On the other hand, as shown on the right side of FIG. 5, the thawed Ipomoea batatas of example 3 was still compact and the shape of the midgut region was well maintained.

The freshness retaining devices of comparative example 3 and example 3 were installed in a freezing chamber of a refrigerator, and abalone was selected for comparison of freezing. The temperature in the freezer was-24 ℃ and the freezing period was from the first day to the 7 th day of the experiment. At day 7 the abalone was removed and thawed. The voltage applied to the electrode portion 2 was set at 2000V, and the voltage applied directly to abalone was 25V.

Fig. 6 is a photograph of frozen and thawed abalone in the freezer of a refrigerator equipped with a fresh keeping apparatus in comparative example 3 and example 3. Fig. 6 is a photograph of frozen and thawed abalone in the freezer compartment of the refrigerator of comparative example 3 at the top, and fig. 6 is a photograph of frozen and thawed abalone in the freezer compartment of the refrigerator of example 3 at the bottom.

The upper part of figure 6 shows that the thawed abalone in comparative example 3 had a high blood outflow, the body had become soft, and the liver had also been damaged. On the other hand, the lower part of fig. 6 shows that the thawed abalone in example 3 had a small amount of blood flowing out, a small degree of body softening, and a well preserved liver. Moreover, after the thawed abalone is heated, the abalone body of the comparative example 3 has atrophy and grain protrusion, i.e., the granular part on the surface protrudes, and the abalone is very soft to eat. The abalone in example 3 also shriveled, but was chewy.

With the fresh-keeping device of embodiment 1, the clumping effect can freeze water molecules without damaging the cells. Because the freshness of the frozen food can be maintained, there is no need to take the frozen food out of the quick freezer and transfer it to a freezer, as compared to using a quick freezer. Thus, it is possible to reduce the electric power consumption and the discharge amount of carbon dioxide by installing the space potential generator 6 to the existing refrigeration equipment without introducing a high-volume quick refrigeration equipment.

In addition, a fresh keeping apparatus having no space potential generating device and provided with a refrigerator was taken as comparative example 4, and a fresh keeping apparatus of embodiment 1 having a space potential generating device 6 and provided with a refrigerator was taken as embodiment 4. Then, the fresh-keeping apparatuses of comparative example 4 and example 4 were used, respectively, and the temperatures were set to-18 ℃, and the food materials were frozen and compared. As a result, the ice crystals adhered to the food material after freezing were large in comparative example 4, and the ice crystals of the food material after freezing were small in embodiment 4. This is because the freshness retaining device of embodiment 4 has a small cluster of water molecules when frozen. It is thus demonstrated that the best freezing effect can be achieved without damaging the fiber of the food material by adding a space potential generating device to the conventional freezer.

In the fresh-keeping apparatus of comparative example 4, the quality of the food was deteriorated after freezing at a temperature of-18 ℃ for one month, and if the food was stored for more than one month, the food was deteriorated in the frozen state and could not be eaten. The fresh-keeping device of embodiment 4 can maintain freshness of one year. The frozen fresh-keeping can also lock the moisture, realize the high-quality refrigeration.

Fig. 7 is a photograph of pork frozen and then thawed in a freezer equipped with the refreshing apparatuses of comparative example 4 and example 4, respectively. The left side of fig. 7 is a photograph of the pork thawed at room temperature after being frozen at-18 ℃ for three months in the freezer of comparative example 4, and the right side of fig. 7 is a photograph of the pork thawed at room temperature after being frozen at-18 ℃ for three months in the freezer of example 4.

As shown on the left side of fig. 7, the pork thawed in comparative example 4 had become no longer red and had been in an inedible state. On the other hand, as shown on the right side of fig. 7, the pork thawed in example 4 had almost no change in color, remained red, and was still fresh.

For example, if the ISO container or the transport refrigerated truck is currently transported overseas in the ISO container at a temperature of-20 c for 2 weeks, it can be transported in a fresh state at a temperature of-5 c by installing the space potential generating device 6 on the existing refrigerator. Therefore, the electricity cost can be saved, and the emission of carbon dioxide can be reduced.

< mounting on fishing boat >

Next, an example in which the freshness retaining device according to embodiment 1 is mounted in a storage for a fishing boat will be described.

Conventionally, when storing caught fish in a storage of a fishing boat, the weight is reduced by 30% from the beginning to the 7 th day. Even in summer, the weight is reduced by 50% from the beginning of storage to day 7. The weight reduction and the freshness reduction of the fish are closely related, and how to reduce the weight loss is always a difficult problem.

The freshness retaining device of embodiment 1 was installed in a storage house of a fishing boat as the freshness retaining device of embodiment 5, water was filled in a container of foamed plastic, the temperature for retaining fish was set to-1 ℃, the voltage applied to an electrode portion was set to 30 to 50V, and the fish was retained from the first day to the 7 th day on the day on which the experiment started. On the other hand, the freshness of the fish held in the embodiment 5 and the comparative example 5 was compared by using a storage library in which no space potential generating device was installed as the freshness keeping device of the comparative example 5.

In comparative example 5 and embodiment example 5, the fresh-keeping space formed in the storage warehouse and having the fresh-keeping device mounted therein had a width of 4m × a height of 3m × a length of 5 m. The electrode unit 2 attached to the freshness retaining device of example 5 was constituted by an electrode plate having a width of 15cm × a length of 25cm, and both upper and lower surfaces of the electrode plate were covered with an insulating material (PE plate) made of a plastic material. The size of the insulating material covered on the electrode plate is 25cm in width, 35cm in length and 6mm in thickness, and the size of the insulating material covered under the electrode plate is 25cm in width, 35cm in length and 6mm in thickness. The voltage applying device 3 applies an alternating voltage to the electrode part 2 to ensure that the electrode part 2 releases static electricity, so that the voltage in the storage is 20V, the food is stored in a foam plastic box in the storage, ice is added in the box, and the voltage applied to the food is also 20V.

FIG. 8 is a photograph showing fish frozen and then thawed in a storage room equipped with a freshness retaining device in comparative example 5 and example 5. The left side of fig. 8 shows photographs of the fish stored in the storage of comparative example 5, and the right side of fig. 8 shows photographs of the fish stored in the storage of example 5.

Comparing comparative example 5 and example 5 of fig. 8, it was found that the eyes of the fish of comparative example 5 were whitish, and the eyes of the fish of example 5 were black, which were completely different. From this, it is shown that the freshness of fish in the storage can be improved by installing the freshness retaining device of embodiment 1 in the storage of a fishing boat.

< preservation Effect of chestnuts >

Next, the fresh-keeping effect of chestnuts when the fresh-keeping device according to embodiment 1 is used will be described.

First, a fresh keeping apparatus without a space potential generating apparatus is set as a comparative example 6, and a fresh keeping apparatus equipped with a space potential generating apparatus 6, that is, a fresh keeping apparatus of embodiment 1 is set as an embodiment 6.

In comparative example 6 and embodiment example 6, the freshness retaining space formed in the storage warehouse and having the freshness retaining device mounted therein had a length of 50cm, a height of 30cm, and a width of 45 cm. The electrode unit 2 attached to the freshness retaining device of example 6 was constituted by a flat electrode plate 15cm wide by 25cm long, and the upper and lower surfaces of the electrode plate were covered with an insulating material (PE plate) made of plastic. The size of the insulating material covered on the electrode plate is 25cm in width, 35cm in length and 6mm in thickness, and the size of the insulating material covered under the electrode plate is 25cm in width, 35cm in length and 6mm in thickness. The voltage applying device 3 applies an alternating voltage to the electrode part 2 to discharge static electricity from the electrode part 2, so that the voltage in the storage is 100V, the food material in the storage is 1kg of chestnut, the chestnut is placed in a plastic tray, and the voltage applied to the upper surface is 120V.

In comparative example 6 and embodiment example 6, the fresh-keeping device was installed in a storage room having three functions of normal-temperature storage, cold storage and frozen storage, and chestnut was used as the food material to compare the change in appearance and sugar content. The temperature of the storage in comparative example 6 was set to be at room temperature or 5 ℃ and the storage life was one to two months. The temperature of the storage of example 6 was set to room temperature, 0 ℃ or-2 ℃, and the storage life was one to two months. In comparative example 6 and example 6, the test subjects under the same conditions were selected as specimens and compared.

Fig. 9 is a photograph of chestnuts stored in a storage room equipped with a fresh keeping device in comparative example 6 and example 6. The left side of FIG. 9 is a photograph of chestnuts stored at-2 ℃ for two months in the storage of comparative example 6, and the right side of FIG. 9 is a photograph of chestnuts stored at-2 ℃ for two months in the storage of example 6.

The results showed that the chestnuts preserved at room temperature in comparative example 6 all had mold on the surface of 3 samples after one month, the average of the sugar degree of 3 samples was 2.5, and the mold of 3 samples after one and a half months was enlarged, and the sugar degree could not be measured. The photograph on the left side of fig. 9 is one of the 3 samples in the group that were stored one and a half months later.

In comparative example 6, the appearance of 3 samples had no significant change after one month, the average value of the sugar degree was 6.93, and 3 samples had much mold after one and a half months, and the sugar degree could not be measured.

On the other hand, in the chestnuts stored at room temperature in example 6, the surfaces of 3 samples were mildewed after one month, the average value of the sugar degree was 4.46, and the mildewing of 3 samples after one and a half months was increased, and the sugar degree could not be measured.

In the chestnuts stored at 0 ℃ in the embodiment 6, the appearances of 3 samples are not obviously changed after one month, the average sugar degree value is 6.26, the appearances are still not obviously changed after 2 months, and the average sugar degree value is 11.26.

In the chestnuts stored at-2 ℃ in the embodiment 6, the appearance of 3 samples has no obvious change after one month, the average sugar degree value is 6.53, the appearance still has no obvious change after 2 months, and the average sugar degree value is 21.43. The photograph on the right side of fig. 9 is one of the 3 samples stored for 2 months in this group.

As can be seen from the above described mold formation and comparison of the right and left photographs of fig. 9, when chestnuts are preserved by using the fresh keeping device according to embodiment 1, the freshness of the chestnuts is remarkably improved. As can be seen from the difference in the sugar content, the sugar content of the chestnuts is significantly increased when the fresh-keeping device according to embodiment 1 is used to keep the chestnuts. It can be concluded that the present embodiment can achieve preservation and long-term preservation of chestnuts.

< Effect of Voltage adjustment part >

In a refrigerator having a fresh-keeping space, when the space inside is divided into a plurality of spaces by partition plates, the number of discharge plates as the electrode part 2 can be increased, but the voltage may be insufficient. For example, when the fresh keeping space 5 is formed in a large warehouse, the electric wire connecting the voltage application device 3 and the electrode part 2 may be extended, but the electric wire may have a length of 10 m, 20 m or 30 m, and the voltage may be insufficient.

However, the voltage adjusting unit 41 in the freshness retaining device according to embodiment 1 can adjust the voltage, and apply the adjusted voltage to the discharge plate as the electrode unit 2 to form the alternating electric field, thereby forming the freshness retaining space 5 having a stable freshness retaining effect. That is, it has been difficult to increase the voltage of the discharge plate as the electrode portion 2, but the voltage adjustment portion 41 in the freshness retaining device of embodiment 1 can adjust the voltage applied to the electrode portion 2, and the freshness retaining space 5 can be increased in time, and the freshness retaining effect of the freshness retaining space 5 can be sufficiently achieved by increasing the voltage applied to the electrode portion 2. Conversely, when the fresh keeping space 5 becomes small, electric leakage can be prevented, and the voltage applied to the discharge plate as the electrode portion 2 can be adjusted to a value suitable for the volume of the fresh keeping space 5.

< first modification of embodiment 1 >

Fig. 10 is a front view including a partial cross section schematically showing a first modification of the fresh food keeping apparatus according to embodiment 1. As shown in fig. 10, the refreshing apparatus according to the first modification is mounted in a prefabricated refrigerator 51 which is a partition defining the refreshing space 5.

The first modification of the refreshing apparatus according to embodiment 1 is similar to the refreshing apparatus according to embodiment 1 in that the electrode unit 2 and the voltage applying unit 3 are provided, and the space potential generating unit 6 is formed by the electrode unit 2 and the voltage applying unit 3. The electrode portion 2 and the voltage application device 3 attached to the first modification can be the same as the electrode portion 2 and the voltage application device 3 attached to the freshness retaining device of embodiment 1, and therefore, detailed description thereof will be omitted.

In the first modification, the electrode portion 2 is suspended from the ceiling 51a of the prefabricated refrigerator 51. This can realize long-term freshness preservation of the fresh food 4 stored in the prefabricated refrigerator 51. The initial introduction cost and the long-term operation cost of the fresh-keeping device can be reduced, and the freshness of the fresh-keeping products 4 in the fresh-keeping space 5 can be kept for a long time due to the effect of the alternating electric field formed by the space potential generating device 6. Although not shown in fig. 10, the electrode portion 2 is covered with an insulating material.

The electrode portion 2 is preferably installed at the center of the fresh food space 5 formed in the prefabricated refrigerator 51. This allows to form a uniform alternating electric field inside the prefabricated cold store, i.e. the fresh-keeping space 5.

In the first modification, as in embodiment 1, the voltage adjustment unit 41 is provided in the voltage application device 3 (see fig. 3). Thus, the first modification can also convert the voltage value of ac voltage VL1 (see fig. 3) into two types of voltage values, for example, strong and weak, or 3 types of voltage values, for example, strong, medium and weak. Thus, the intensity of the alternating electric field formed by the space potential generating device 6 in the prefabricated refrigerator 51 can be adjusted and set according to the type and quantity of the fresh food 4, the packing condition, or the temperature or humidity of the fresh-keeping space 5. Therefore, the initial investment cost and the long-term operation cost of the fresh-keeping device can be reduced, and meanwhile, the effect of the alternating electric field formed by the space potential generating device is better, or the influence range and the object space can be better controlled.

Second modification of embodiment 1

Fig. 11 is a side view including a partial cross section schematically showing a second modification of the freshness retaining device according to embodiment 1. As shown in fig. 11, the freshness retaining device according to the second modification is mounted on a refrigerator car 52 having an in-vehicle refrigerator 53 as a partition for partitioning the freshness retaining space 5. The refrigerator car is provided with a cooler 52a and a cool air port 52 b.

A second modification of the refreshing apparatus according to embodiment 1 is similar to the refreshing apparatus according to embodiment 1 in that the electrode unit 2 and the voltage applying unit 3 are provided, and the space potential generating unit 6 is formed by the electrode unit 2 and the voltage applying unit 3. The electrode portion 2 and the voltage application device 3 attached to the second modification can be the same as the electrode portion 2 and the voltage application device 3 attached to the refreshing apparatus according to embodiment 1, and therefore, detailed description thereof will be omitted.

In the refrigerator car 52 according to the second modification, the cooler 52a blows cold air into the fresh food space 5 formed in the in-vehicle refrigerator 53 through the cold air port 52b, thereby cooling the in-vehicle refrigerator 53.

In the second modification, the electrode portion 2 is mounted on the ceiling 53a of the in-vehicle refrigerator 53 as the electrostatic discharge portion of the space potential generating device 6. In this way, the shelf life of the fresh food 4 stored in the in-vehicle refrigerator 53 can be extended. The initial introduction cost and the long-term operation cost of the fresh-keeping device can be reduced, and the freshness of the fresh-keeping products 4 in the fresh-keeping space 5 can be kept for a long time due to the effect of the alternating electric field formed by the space potential generating device 6. Although not shown in fig. 11, the electrode portion 2 is covered with an insulating material. And the voltage application device 53 is connected to a battery (not shown) of the refrigerator car 52.

The electrode section 2 is preferably installed at the center of the fresh keeping space 5 formed in the in-vehicle refrigerator 53, so that a uniform alternating electric field can be formed in the in-vehicle refrigerator 53, that is, the fresh keeping space 5.

In the second modification, as in embodiment 1, the voltage adjustment unit 41 is provided in the voltage application device 3 (see fig. 3). Thus, the second modification can also convert the voltage value of ac voltage VL1 (see fig. 3) into two types of voltage values, for example, strong and weak, or 3 types of voltage values, for example, strong, medium and weak. Thus, the intensity of the alternating electric field formed by the space potential generating device 6 in the in-vehicle refrigerator 53 can be adjusted and set according to the type and quantity of the fresh food 4, the packing condition, or the temperature or humidity of the fresh food space 5. Therefore, the initial investment cost and the long-term operation cost of the fresh-keeping device can be reduced, and meanwhile, the effect of the alternating electric field formed by the space potential generating device is better, or the influence range and the object space can be better controlled.

< third modification of embodiment 1 >

Fig. 12 is a schematic plan view showing a third modification of the freshness retaining device according to embodiment 1. As shown in fig. 12, the fresh food keeping apparatus according to the third modification is installed in a store 54, and a plurality of open food racks 55 are installed as a delimiting portion that delimits the fresh food space 5. The plurality of food racks 55 are constituted by food racks 55a, 55b, 55c, and 55 d.

A third modification of the refreshing apparatus according to embodiment 1 is similar to the refreshing apparatus according to embodiment 1 in that the electrode unit 2 and the voltage applying unit 3 are provided, and the space potential generating unit 6 is formed by the electrode unit 2 and the voltage applying unit 3. The electrode unit 2 and the voltage application unit 3 mounted on the third modification can be the same as the electrode unit 2 and the voltage application unit 3 mounted on the refreshing apparatus according to embodiment 1, and therefore, detailed description thereof will be omitted.

In the third modification, the electrode portion 2 as the electrostatic discharge portion of the space potential generating apparatus 6 is mounted on the wall of the store 54, and also in the vicinity of the food shelves 55a, 55b, 55c, and 55 d. Although not shown in fig. 12, the electrode portion 2 is covered with an insulating material.

In the third modification, the space potential generating apparatus 6 is operated even when the store 54 is closed at night, and an alternating electric field is formed around the food racks 55a, 55b, 55c, and 55 d. Thus, the shelf life of fresh food such as food displayed in each fresh food storage space 5 of the shelves 55a, 55b, 55c and 55d can be extended. The initial introduction cost and the long-term operation cost of the fresh-keeping device can be reduced, and the freshness of the fresh-keeping products 4 can be maintained for a long time due to the effect of the alternating electric field formed by the space potential generating device 6.

In the third modification, as in embodiment 1, the voltage adjustment unit 41 is provided in the voltage application device 3 (see fig. 3). Thus, the third modification can also convert the voltage value of the ac voltage VL1 (see fig. 3) into, for example, two kinds of strong and weak voltage values or, for example, 3 kinds of strong, medium and weak voltage values. Thus, the intensity of the alternating electric field generated by the space potential generating device 6 in each fresh food storage 5 of the food shelves 55a, 55b, 55c, and 55d can be adjusted and set according to the type, quantity, or packaging condition of fresh food such as food to be displayed, or the temperature or humidity of the fresh food storage 5. Therefore, the initial investment cost and the long-term operation cost of the fresh-keeping device can be reduced, and meanwhile, the effect of the alternating electric field formed by the space potential generating device is better, or the influence range and the object space can be better controlled.

< fourth modification of embodiment 1 >

Fig. 13 is a schematic side view showing a fourth modification of the freshness retaining device according to embodiment 1. As shown in fig. 13, the refreshing apparatus according to the fourth modification example does not have a delimiting portion for delimiting the refreshing space.

A fourth modification of the refreshing apparatus according to embodiment 1 is similar to the refreshing apparatus according to embodiment 1 in that the electrode unit 2 and the voltage applying unit 3 are provided, and the space potential generating unit 6 is formed by the electrode unit 2 and the voltage applying unit 3. The electrode unit 2 and the voltage application unit 3 mounted on the fourth modification can be the same as the electrode unit 2 and the voltage application unit 3 mounted on the refreshing apparatus according to embodiment 1, and therefore, detailed description thereof will be omitted.

However, the refreshing apparatus according to the fourth modification is provided with the supporting member 56 for supporting the electrode portion 2, and the electrode portion 2 serves as the electrostatic discharge portion of the space potential generating apparatus 6.

As shown on the left side of fig. 13, the support member 56 may be a support member 56a that supports the electrode unit 2 and is vertically mounted on the floor 57. By using such a support member 56a, the range of options for the installation location of the electrode portion 2 is wider, and the electrode portion 2 can be installed at a more suitable location.

As shown on the right side of fig. 13, the support member 56 may be a support member 58b that supports the electrode portion 2 and hangs down from the ceiling 58. In this case, the support member 56b is fixed to the ceiling 58 by the fixing portion 56 c. By using such a support member 56b, the range of options for the installation location of the electrode portion 2 is wider, and the electrode portion 2 can be installed at a more suitable location.

Embodiment mode 2

< frying pan >

Next, a fryer according to embodiment 2 will be explained. The fryer according to embodiment 2 is provided with a space potential generating device which is an electric field forming device for forming an alternating electric field.

Fig. 14 is a cross-sectional view schematically showing an example of the fryer assembly according to embodiment 2. As shown in fig. 14, the fryer apparatus according to embodiment 2 includes an oil bath 61, an electrode unit 2, and a voltage applying unit 3. The oil groove 61 stores oil 61a therein. The electrode portion 2 is mounted inside the oil groove 61, and is preferably submerged in the oil 61a inside the oil groove 61. The voltage application device 3 applies an alternating voltage VL1 (see fig. 3) to the electrode portion 2 to form an alternating electric field in the oil groove 61. The electrode unit 2 and the voltage applying unit 3 constitute a space potential generating unit 6 for generating an alternating electric field in the oil bath 61.

However, the fryer according to embodiment 2 may not be provided with the oil sump 61. In this case, the fryer apparatus equipped with only the electrode portion 2 and the voltage application means 3 may be used in combination with the oil bath.

The electrode unit 2 and the voltage applying unit 3 attached to the fryer apparatus of embodiment 2 may be the same as the electrode unit 2 and the voltage applying unit 3 attached to the refresher apparatus of embodiment 1, and thus detailed description thereof will be omitted.

The fryer apparatus according to embodiment 2 is combined with the oil bath 61 and the space potential generating device 6, and the electrode portion 2 discharges static electricity into the oil bath 61 to form an alternating electric field in the oil bath 61, and the formed alternating electric field is applied to the oil 61a stored in the oil bath 61, thereby frying the food material 61b under such a condition. Thus, the initial introduction cost and the long-term running cost of the fryer apparatus are reduced, and the freshness of the oil 61a stored in the oil bath 61 when the ingredients 61b are fried can be maintained well by the alternating electric field generated by the space potential generating device 6.

In addition, the embodiment 2 is also provided with a space potential generating device 6 in which the electrode portion 2 and the voltage applying device 3 are installed, and the voltage adjusting portion 41 is provided in the voltage applying device 3, similarly to the freshness retaining device of the embodiment 1 (see fig. 3). Thus, the intensity of the alternating electric field in the oil bath 61 can be adjusted and set according to the type of the oil 61a or the type of the food material 61b fried in the oil 61a stored in the oil bath 61. Thus, initial investment costs and long term operating costs of the fryer assembly are reduced, and the effects of the alternating electric field affecting the frying process of the fryer are better.

< Effect of alternating electric field affecting frying treatment >

Next, the effect of the alternating electric field generated in the fryer according to embodiment 2, which affects the frying process, will be described.

First, a fryer having no space potential generation device was used as comparative example 7, and a fryer equipped with space potential generation device 6, i.e., a fryer of the present embodiment 2 was used as embodiment 7. The electrode part 2 mounted on the fryer of embodiment 7 uses an electrode part whose upper and lower surfaces are covered with an insulating material. The same sample food material was put into the oil sumps of the fryers of comparative example 7 and example 7, and after frying was continuously performed, the color and smell in the oil sumps were compared.

The fryer vats of comparative example 7 and example 7 each received 6 liters of oil. The electrode part 2 attached to the fryer of example 7 was composed of an electrode plate 5cm wide by 10cm long by 1mm thick, and insulating pads made of teflon (registered trademark) PTFE material were attached to the upper and lower surfaces of the electrode plate. The PTFE material can resist heat to 260 ℃. The insulating material covered on both sides of the electrode plate is 1cm long, 1cm wide and 5mm thick, and covers on both sides or one side. In addition, the electrode part 2 is arranged in the frying pan and covered with insulating materials, thereby preventing electric leakage.

The power supply line 24 connecting the output terminal 34 (see fig. 3) of the voltage applying device 3 and the electrode portion 2 is an electric wire covered with an insulating material made of teflon (registered trademark) PTFE. The PTFE material can resist heat to 260 ℃. In addition, in order to exclude the influence of the other conditions upon the comparison, the fryers of comparative example 7 and embodiment example 7 were spaced apart by a distance of 4 meters.

The voltage applied to the electrode portion 2 is set to 800V, and the voltage directly applied to the oil 61a stored in the oil groove 61 is also set to 800V.

Specifically, 28kg of chicken (coated with starch) was continuously fried with 300 g of each time, and the color, smell, acid value (av), (acid value), peroxide value (pov) (peroxide value), and Acrylamide (Acrylamide) formation were compared after frying. The color was judged by visual observation, and the odor was judged by an odor judge officer qualified as a country certified by the environmental province. The acid value is referred to a deterioration standard value unified in japan. The peroxide value was examined in consideration of various evaluations, although there was no recognized standard value of deterioration.

Regarding acrylamide, a chemical substance contained in food, it is disclosed as a "carcinogen having genotoxicity" by the food safety committee of the condufu japan. Further, FDA (Food and Drug Administration) reported that Acrylamide having a risk of carcinogenicity or damage to a gene in processed foods is produced in "FDA Draft Action Plan for Acrylamide in Food". Even on 24.4.2002, the collective research group of the swedish national food service and Stockholm university showed that the raw material containing a large amount of carbohydrates contained an acrylamide component in the food after being fried or roasted at a high temperature of 120 ℃. Since acrylamide is at risk of carcinogenicity, the amount of acrylamide produced was also examined.

Under the above conditions, in order to ensure the same frying conditions, the same amount of food materials were continuously fried in the fryers of comparative example 7 and example 7 for 3 days, respectively, and then oil was extracted from the fryers to compare the respective items. To ensure that the core temperature after frying reached 75 ℃, the temperature was measured with a thermometer.

As a result, example 7 had a better effect of inhibiting oil deterioration than comparative example 7 in terms of color, odor, acid value, and peroxide value. The acrylamide formation amount in example 7 was reduced to 1/4 as compared with that in comparative example 7.

Regarding the color of the oil, the color difference of the oil on the second day from the start of the experiment was compared between comparative example 7 and example 7. Here, the color difference is obtained by comparing the difference between the oil before cooking and the oil after cooking by using an L × a × b color system, where L is brightness, + a is red, -a is green, + b is yellow, and-b is blue. The color difference value (dE) is judged to be larger than 6.0 according to NBS (National Bureau of Standards).

As a result, the color of the oil of the fryer in example 7 was bright and the color of the oil of the fryer in comparative example 7 was 6.43, and it was found that the oil of the fryer in comparative example 7 was dirty.

Regarding the odor of the oil, between comparative example 7 and example 7, evaluation was performed by several inspectors including odor determination soldiers. As a result, the oil of example 7 was perceived to have a lower odor than the oil of comparative example 7, indicating that the taste of the fried chicken nuggets was less likely to remain in the oil.

The oil of example 7 and the oil of comparative example 7 were also compared by visual observation. As a result, the oil of comparative example 7 had black spots and had foam, 200 g of chips were fried after the end of the experiment, and when the last 100g of chips were fried, the oily fume was almost as much as the moisture in the bathroom, the working environment was remarkably deteriorated, and sticky feeling and oily fume smell were generated. In example 7, no foam was generated and the oil surface was clean.

With respect to peroxide value, an experiment of frying 200 g of potato chips for 3 days was performed between comparative example 7 and example 7, after which the state of oil was compared. As a result, the oil peroxide value of the fryer of example 7 was 1.89, and the oil peroxide value of the fryer of comparative example 7 was 2.77, and the oil degradation of example 7 was reduced by 32% as compared to comparative example 7.

In addition, regarding acrylamide, between comparative example 7 and example 7, 100g of potato chips were fried after the above experiment was completed, and the acrylamide content in the potato chips was compared. As a result, the fryer of comparative example 7 fried potato chips having an acrylamide content of 425. mu.g/kg and the fryer of example 7 fried potato chips having an acrylamide content of 113. mu.g/kg, and the fryer of example 7 reduced the acrylamide content to 1 in 4 minutes as compared with comparative example 7. Acrylamide carries a carcinogenic risk, is usually produced in degraded oils, and is also of concern internationally. Therefore, the space potential generating device 6 is significant in that the acrylamide content can be reduced.

Next, 80 g of the chips were put into the oil stored in the oil tanks of the fryers of comparative example 7 and example 7, respectively, and fried at an oil temperature of 170 ℃, comparing the change of the oil.

As a result, the moisture in the food material in the fryer of comparative example 7 was combined with the oil to cause an emulsification phenomenon, and the moisture was mixed into the oil, whereas the fryer of embodiment example 7 was combined with the oil and electrons, and was not combined with the moisture, and thus the moisture in the food material was quickly evaporated and was not mixed into the oil. Thus, the temperature of the oil can be always kept at a fixed temperature, and the frying time can be shortened. Also, only the moisture in the fryer of example 7 changed to steam and evaporated. Therefore, oil stain around the fryer is reduced, and the fryer is not attached to kitchens and stores, so that the environment is more sanitary. Also, the fryer of embodiment 7 can suppress the evaporation of oil. Thus, the smell of oil generated during frying is also suppressed, and the clothes of customers can be prevented from being stained with the smell of oil.

Also in the fryers of comparative example and example 7, frozen chicken nuggets were fried to compare the frying time.

The fryer oil baths of comparative example 7 and example 7 were filled with 6 liters of oil, respectively. The temperatures of both fryers were set at 165 ℃ and the core temperatures of the fried chicken nuggets were measured at 2 minutes, 30 seconds and 3 minutes for comparison.

As a result, the center temperature of the fried chicken pieces in the fryer of example 7 was 83.6 ℃ and 95 ℃ at 2 minutes, 30 seconds and 3 minutes, respectively. While the fryer of comparative example 7, at 2 minutes, 30 seconds and 3 minutes, the core temperature of the fried chicken nuggets was 34.6 c and 80c で, respectively. In the fryer of embodiment 7, the thermal conductivity of the oil is higher, and the frying time can be shortened.

Further, in a fryer used in an actual shop and consuming 405 liters of oil (22.5 pots) for one month, after installing the space potential generating device 6, the temperature of frying was adjusted to 170 ℃ from 180 ℃ before installing the space potential generating device. Thus, the monthly usage of the store oil was changed to 108 liters (6 cans), achieving a 73% reduction. And the frying time is shortened by more than 10 percent, and the working efficiency is improved.

Thus, in the fryer of embodiment 2 equipped with the space potential generating device 6 installed in the oil bath 61, the space potential generating device 6 forms an alternating electric field in the oil bath 61, thereby improving the thermal conductivity of the oil, and the fried food is also crispy, which can achieve a very good effect. Moreover, because the water vapor is evaporated quickly, oil smoke cannot be generated, and workers in a kitchen cannot feel eye pain.

Embodiment 3

< Water activating device >

Next, a water activating apparatus according to embodiment 3 will be described. The water activation device according to embodiment 3 forms an alternating electric field in a water tank, and performs electrolysis treatment, that is, activation, on water stored in the water tank in which the alternating electric field is formed. The water activation device according to embodiment 3 is provided with a space potential generation device, that is, an electric field formation device that forms an alternating electric field.

Fig. 15 is a cross-sectional view schematically showing an example of the water activating device according to embodiment 3. As shown in fig. 15, the water activation apparatus according to embodiment 3 includes a water tank 62, an electrode unit 2, and a voltage application unit 3. The water 62a is stored in the water tank 62. The electrode portion 2 is installed in a water tank 62, preferably immersed in water 62a stored in the water tank 62. The voltage application device 3 applies an alternating voltage VL1 (see fig. 3) to the electrode portion 2 to form an alternating electric field in the water tank 62. The electrode unit 2 and the voltage applying unit 3 form a space potential generating unit 6 that generates an alternating electric field in the water tank 62.

However, the water activation apparatus according to embodiment 3 may not have the water tank 62. In this case, the water activating means constituted only by the electrode portion 2 and the voltage applying means 3 can be combined with the water tank to perform electrolysis treatment and activation of water. And even if the electrode portion 2 is not immersed in the water 62a, the same effect can be obtained as when the electrode portion 2 is immersed in the water 62 a.

The electrode unit 2 and the voltage application unit 3 attached to the water activation apparatus according to embodiment 3 may be the same as the electrode unit 2 and the voltage application unit 3 attached to the freshness retaining apparatus according to embodiment 1, and therefore detailed description thereof will be omitted.

The water activation device according to embodiment 3 is configured by combining the water tank 62 and the space potential generating device 6, and the electrode unit 2 discharges static electricity into the water tank 62 to form an alternating electric field in the water tank 62, and the formed alternating electric field is applied to the water 62a stored in the water tank 62 to activate the water 62 a. Thus, the initial introduction cost and the long-term operation cost of the water activation device are reduced, and the water 62a stored in the water tank 62 can be activated more effectively by the alternating electric field generated by the space potential generating device 6.

When electrolysis of water is performed by applying a direct current between 2 electrodes, active oxygen (OH, etc.) is generated at the anode, and various organic substances are oxidized by the generated active oxygen, while hydrogen (H +) is generated at the cathode, and the various organic substances are reduced by the generated hydrogen. Alternatively, when electrolysis of water containing chloride ions (Cl-) such as seawater is performed by applying a direct current between 2 electrodes, hypochlorous acid (HClO) is generated at the anode, and the formed hypochlorous acid can oxidize and decompose bacteria and the like. Or when direct current is applied between 2 electrodes to electrolyze water containing chloride ions and ammonia nitrogen (NH3), the ammonia nitrogen reacts and is converted into harmless nitrogen (N2).

In contrast, the water activating apparatus according to embodiment 3 is provided with only one electrode portion 2. In this case, when an alternating voltage is applied to the electrode portion 2, the electrode portion 2 alternately reciprocates so that it becomes an anode for a moment and a cathode for a moment. Therefore, the electrode portion 2 generates hydrogen and active oxygen when water is electrolyzed, generates hypochlorous acid when water containing chlorine ions is electrolyzed, and generates nitrogen when water containing chlorine ions and ammonia nitrogen is electrolyzed.

Thus, when various organic matters exist in the water 62a stored in the water tank 62, the organic matters can be acidified and removed, when bacteria and the like exist in the water 62a, the bacteria can be oxidized, decomposed and sterilized, and when ammonia nitrogen exists in the water 62a, the ammonia nitrogen can be converted into nitrogen and removed. That is, the water 62a stored in the water tank 6 can be activated.

The water activating device according to embodiment 3 is also provided with a space potential generating device 6 including an electrode portion 2 and a voltage applying device 3, similarly to the refreshing device according to embodiment 1, and the voltage applying device 3 is provided with a voltage adjusting portion 41 (see fig. 3), similarly to the refreshing device according to embodiment 1. Thus, the intensity of the alternating electric field in the water tank 62 can be adjusted to an optimum intensity according to the type or amount of organic substances, bacteria, or the like present in the water 62a, or the content of ammonia nitrogen in the water 62 a. This reduces both the initial input cost and the long-term running cost of the water activation device, and improves the effect of the alternating electric field of the water activation device on the activation treatment.

< Effect of alternating electric field affecting activation treatment >

15 goldfish of 15cm long, 2cm wide and 10cm high were put in a water tank 62 of 80cm wide, 2m long and 50cm high for 6-month cultivation.

The electrode portion 2 mounted in the water tank 62 was constituted by an electrode plate 5cm wide by 10cm long by 1mm thick, and insulating legs were attached to both upper and lower surfaces of the electrode plate, and the insulating backing plate was made of insulating teflon (registered trademark) ptfe (polytetrafluoroethylene). The insulating material covered on both sides of the electrode plate is 1cm wide, 1cm long and 5mm thick, and covers both sides or one side of the electrode plate. However, the electrode plate may have another shape. In addition, the electrode plate is built in the water tank wall, and can prevent electric leakage when covering the insulating panel.

An alternating current of 2200V was applied to the electrode plates, and 15 goldfishes were cultured for 6 months as described above. No cleaning was done at all for 6 months, as was the filtered fraction. Moreover, the filtered part can not see light and is placed in a dark environment which avoids the sunlight. Feeding the fish for 1 to 2 times every day, and culturing according to a normal culture method.

As a result, after 6 months, the surface in the water tank was completely free from stains and kept clean. In addition, the water tank and the filtering part are the same, so that the water is completely free from turbidity and odor, and the water quality is good. Thus, the voltage can be adjusted according to the size of the water tank and the amount of water to create an optimum environment for aquatic organisms. Since the water tank 62 can be equipped with an electrode plate, the cells of the fish are also activated, and the fish themselves become healthy. However, if the alternating electric field is formed by only one electrode plate, the fish can be kept in the water tank. That is, the water activating apparatus of embodiment 3 activates water and can purify water by electrolysis.

< Effect of Voltage adjustment part >

With the voltage adjustment unit 41 in the water activation device according to embodiment 3, the voltage applied to the electrode unit 2 can be adjusted according to the size of the water tank or the number of fish. If the alternating electric field applied to the aquatic organisms such as fish is too strong, the aquatic organisms are adversely affected, and the voltage adjustment unit 41 in the water activating device according to embodiment 3 can activate water without adversely affecting the aquatic organisms.

Embodiment 4

< cultivation apparatus >

The culture apparatus according to embodiment 4 will be explained below. The culture apparatus according to embodiment 4 forms an alternating electric field in a water tank, and aquatic organisms are cultured in the water tank in which the alternating electric field is formed. The breeding apparatus according to embodiment 4 is provided with a space potential generating device, which is an electric field generating device that forms an alternating electric field.

An exemplary cross-sectional view of the culture apparatus according to embodiment 4 is schematically shown. As shown in fig. 16, the culture apparatus according to embodiment 4 includes a water tank 63, an electrode unit 2, and a voltage applying unit 3. Water 63a such as seawater is stored in the water tank 63. The electrode portion 2 is installed in the water tank 63, and is preferably submerged in the water 63a stored in the water tank 63. The voltage application device 3 applies an alternating voltage VL (see fig. 3) to the electrode portion 2 to form an alternating electric field in the water tank 63. The electrode portion 2 and the voltage applying device 3 constitute a space potential generating device 6 that forms an alternating electric field in the water tank 63.

However, the culture apparatus according to embodiment 4 may not have the water tank 63. In this case, the culture apparatus consisting of only the electrode part 2 and the voltage application means 3 can be combined with the water tank for culture of aquatic organisms.

The electrode portion 2 and the voltage application device 3 attached to the culture device of embodiment 4 may be the same as the electrode portion 2 and the voltage application device 3 attached to the freshness retaining device of embodiment 1, and therefore, detailed description thereof will be omitted.

The culture apparatus according to embodiment 4 is configured to culture aquatic organisms 63b by discharging static electricity from the electrode unit 2 into the water tank 63 to form an alternating electric field in the water tank 63, and applying the formed alternating electric field to the aquatic organisms 63b such as fish. At this time, the effect of the alternating electric field causes water molecules in the aquatic organism 63b to be irradiated with electromagnetic waves of a specific wavelength, activates cells in the aquatic organism 63b, activates vitality of the aquatic organism 63b, and cultivates the aquatic organism 63 b.

The culture apparatus according to embodiment 4 includes a common water tank 63, an electrode unit 2, and a voltage applying unit 3. As described above, the effect of the alternating electric field activates the vitality of the aquatic organisms 63b and cultivates the aquatic organisms 63 b. Therefore, the culture apparatus according to embodiment 4 can reduce the initial introduction cost and the long-term operation cost of the culture apparatus, and can culture the aquatic organisms 63b more effectively by the alternating electric field generated by the space potential generating device 6.

The voltage applying device 3 has no ground, and when the electrode portion 2 as the electrostatic discharge means is covered with an insulating material, no corona discharge occurs, and no discharge occurs due to dielectric breakdown of static electricity generated around the electrode portion 2. The electrode portion 2 is physically vibrated at a low frequency, and an alternating electric field is conducted around the electrode portion 2 in accordance with the vibration of the low frequency, whereby an electric field can be formed in a wide range.

Adopt traditional mode, set up 2 interchange electrode processing, the current value is 10 ~ 20A, and the electric current is higher, and aquatic organisms such as fish or breed staff have the possibility of electrocuteeing, so can not put into the electrode in the basin. Therefore, 2 electrodes are provided at a place other than the water tank, and the seawater or fresh water taken out from the water tank passes between the 2 electrodes, and the electrodes apply high voltage to the water to perform sterilization treatment. In this case, the sterilization treatment can be performed only when the water is circulated outside the water tank, and stability is poor.

On the other hand, in the culture apparatus according to embodiment 4, since a low-voltage and low-frequency ac voltage is applied to the electrode portion 2, the aquatic organisms 63b such as fish and the like and people do not get an electric shock, and thus the culture apparatus can be safely used. Further, since the cells are activated, the vitality of the aquatic organisms 63b such as fish cultured in the water tank 63 can be activated. Specifically, the fish with the skin color blackened and less active and lacking vitality is put into the water tank 63 for cultivation, the first day of the cultivation day is the day from the beginning of the cultivation, the fish starts to become active by the 5 th day, the blackened skin is not existed, and the vitality is recovered.

The culture apparatus according to embodiment 4 is also provided with a space potential generating device 6 including an electrode unit 2 and a voltage applying device 3, similarly to the freshness retaining apparatus according to embodiment 1, and the voltage applying device 3 is provided with a voltage adjusting unit 41 (see fig. 3), similarly to the freshness retaining apparatus according to embodiment 1. Thus, the intensity of the alternating electric field in the water tank 63 can be adjusted to an optimum intensity according to the type and the number of aquatic organisms 63b to be cultured. Thus, the initial investment cost and the long-term running cost of the culture apparatus are reduced, and the effect of the alternating electric field affecting the culture treatment is improved.

< Effect of Voltage adjustment part >

The voltage applied to the electrode portion 2 can be adjusted by the voltage adjusting portion 41 in the culture apparatus according to embodiment 4 according to the size of the water tank or the number of fish. If the alternating electric field applied to the aquatic organisms such as fish is too strong, there is a possibility that the aquatic organisms are adversely affected, and the voltage adjustment unit 41 in the culture apparatus according to embodiment 4 can perform culture treatment without adversely affecting the aquatic organisms.

Embodiment 5

< storage device >

Next, the storage device according to embodiment 5 will be explained. The storage device according to embodiment 5 is configured to form an alternating electric field in a space for storing stored items, and to maintain freshness of the stored items in the storage space in which the alternating electric field is formed, thereby storing the stored items.

Fig. 17 is a schematic cross-sectional view showing an example of the storage apparatus according to embodiment 5. Fig. 18 is a perspective view schematically showing an example of the storage device according to embodiment 5. However, the power supply line 24 is not shown in fig. 18.

As shown in fig. 17 and 18, the room temperature storage 64 is provided in the room temperature storage according to embodiment 5. The room temperature storage 64 is a partition portion that partitions a storage space 64b for storing the stored object 64a, and the storage space 64b is formed in the room temperature storage 64. As the room temperature storage 64, for example, a room temperature storage having a shelf plate 64c can be used.

The storage apparatus according to embodiment 5 is provided with the electrode unit 2 and the voltage applying unit 3, and the space potential generating unit 6 is constituted by the electrode unit 2 and the voltage applying unit 3, as in the fresh keeping apparatus according to embodiment 1. The electrode unit 2 and the voltage applying unit 3 mounted on the storage unit of embodiment 5 can be the same as the electrode unit 2 and the voltage applying unit 3 mounted on the refreshing apparatus of embodiment 1, and therefore, detailed description thereof will be omitted.

In embodiment 5, the electrode unit 2 is suspended from the ceiling 64d of the room temperature storage 64. The electrode unit 2 is provided with a flexible and bendable output plate (discharge plate or discharge plate), i.e., a plate-shaped electrode 2 a. The plate-like electrode 2a is attached to the screen 64f, and the screen 64f can be wound by the winding portion 64 e. When the space potential generating device 6 is used, the plate-like electrode 2a hangs down together with the screen 64f pulled down from the winding portion 64 e; when the space potential generating device 6 is not used, the plate-like electrode 2a is wound up from the winding portion 64e together with the screen 64 f. The plate-like electrode 2a can exhibit the effect of the alternating electric field from both the front and back surfaces. The hanging down and rolling up of the screen 64f can be controlled manually using, for example, a remote control 64g, or can be operated automatically depending on temperature or time.

Thus, the freshness of the stored article 64a stored in the normal temperature storage 64 can be maintained for a long period of time. The initial introduction cost and the long-term operation cost of the storage device can be reduced, and the freshness of the stored article 64a in the storage space 64b can be maintained for a long period of time due to the effect of the alternating electric field formed by the space potential generating device 6. However, the electrode portion 2 is covered with an insulating material, which is omitted in fig. 17 and 18. The room temperature storage 64 may be a storage of a size of a household refrigerator.

The electrode unit 2 is preferably attached to the center of the storage space 64b formed in the room temperature storage 64 in a plan view. Thus, a uniform alternating electric field can be formed in the room temperature storage 64, that is, in the storage space 64 b.

The storage apparatus according to embodiment 5 is also provided with a space potential generating device 6 including an electrode unit 2 and a voltage applying device 3, similarly to the fresh keeping apparatus according to embodiment 1, and the voltage applying device 3 is provided with a voltage adjusting unit 41 (see fig. 3), similarly to the fresh keeping apparatus according to embodiment 1. In this way, the intensity of the alternating electric field in the room temperature storage 64 can be adjusted to an optimum intensity according to the type, number, and packing condition of the stored objects 64a, or the temperature or humidity in the storage space 64 b. Thus, the initial input cost and the long-term operation cost of the storage device can be reduced, or the influence range of the alternating electric field can be controlled to increase or decrease the target space of the alternating electric field.

< Effect of alternating electric field affecting preservation treatment >

Next, the effect of the alternating electric field that affects the preservation process in the preservation apparatus according to embodiment 5 will be described.

First, a storage apparatus not equipped with a space potential generation apparatus was used as comparative example 8, and a storage apparatus of embodiment 5 equipped with a space potential generation apparatus was used as embodiment 8. In order to examine the net effect of the alternating electric field generated by the space potential generating device, the upper and lower surfaces of the electrode part 2 mounted on the fresh keeping device of embodiment 8 were not covered with an insulating material.

The plants inserted in the half-vase of water were placed in the room temperature storages 64 of comparative example 8 and example 8, respectively, and stored in the room temperature storages 64 until day 8 from the day of the start of the experiment, and the storage states of the plants on day 8 were compared. The temperature in the room temperature storage warehouse equipped with the storage device in comparative example 8 and example 8 was 20 to 30 ℃. The voltage applied to the electrode part 2 was set to 2000V, and the voltage applied directly to the plants was set to 50V.

Fig. 19 and 20 are photographs of plants stored in the storage devices of comparative example 8 and example 8. The left side of fig. 19 is a photograph of the plant stored in the storage apparatus of comparative example 8 on day 8, and the right side of fig. 19 is a photograph of the plant stored in the storage apparatus of example 8 on day 8. The left side of fig. 20 is a photograph of the plant stored in the storage device of comparative example 8 on day 8, and the right side of fig. 20 is a photograph of the plant stored in the storage device of example 8 on day 8.

As shown on the left side of fig. 19 and the left side of fig. 20, the plants stored in the storage apparatus of comparative example 8 had a color change in the flower, withered and bent in the upper part of the stem, and also in the lower part of the stem, compared to the start of the experiment. On the other hand, as shown on the right side of fig. 19 and the right side of fig. 20, the plants stored in the storage apparatus of example 8 were hardly changed from those at the start of the experiment. It is thus understood that the storage device is provided with the space potential generating device 6, and the storage life of the article to be stored 64a can be extended.

< Effect of Voltage adjustment part >

The voltage applied to the electrode portion 2 by the voltage adjustment portion in the storage device according to embodiment 5 can be adjusted according to the number of stored objects such as flowers to be stored or the size of the storage space 64 b. That is, the range of influence of the alternating electric field, i.e., the size of the holding space 64b, can be adjusted.

Modification of embodiment 5

The preservation apparatus according to embodiment 5 may be installed inside a coffin, the electrode unit may be installed inside the coffin, and the remains of the person may be preserved inside the coffin to which the electrode unit is installed. A modification of embodiment 5 will be briefly described below. The storage device of this modification is a device for storing a remains in which an alternating electric field is formed in a coffin for storing the remains and the remains are stored in the coffin for forming the alternating electric field.

When the preservation device of the present modification is mounted on the coffin, the electrode portion discharges static electricity into the coffin, thereby forming an alternating electric field in the coffin, and the formed alternating electric field is applied to the remains to preserve the remains. Thus, water molecules in the corpse are irradiated with electromagnetic waves of a specific wavelength, and cells in the corpse are activated, thereby suppressing the state of the corpse from being changed. Further, when the microorganism is stored at a temperature range of-1 ℃ to-5 ℃ below the freezing point, the microorganism can be inhibited and the remains can be managed in a good state. Further, if a voltage regulator (see fig. 3) is mounted, a plurality of corpses can be stored. Since the number of the electrode parts 2 can be increased according to the number of coffins, the coffins can be added.

Embodiment 6

< drying device >

The drying apparatus of embodiment 6 will be explained below. The drying apparatus according to embodiment 6 is configured to form an alternating electric field in a drying chamber and dry an object to be dried in the drying chamber in which the alternating electric field is formed. The drying apparatus according to embodiment 6 is provided with a space potential generating device, that is, an electric field forming device for forming an alternating electric field.

Fig. 21 is a schematic cross-sectional view showing an example of the drying apparatus according to embodiment 6. As shown in fig. 21, the drying apparatus according to embodiment 6 includes a drying chamber 65, an electrode unit 2, and a voltage applying unit 3. The drying chamber 65 is a partition defining a drying space 65b, and the drying space 65b is formed in the drying chamber 65 for drying the object 65 a. As the drying warehouse 65, for example, a drying warehouse having a shelf board 65c may be used. The electrode portion 2 is installed in the drying chamber 65. The voltage application device 3 applies an alternating voltage VL1 (see fig. 3) to the electrode portion 2 to form an alternating electric field in the drying chamber 65. The electrode section 2 and the voltage application means 3 constitute a space potential generation means 6 that forms an alternating electric field in the drying chamber 65.

The drying apparatus according to embodiment 6 may not have the drying warehouse 65. In this case, the drying device constituted only by the electrode portion 2 and the voltage applying device 3 may be combined with a drying chamber for drying the object to be dried.

The electrode portion 2 and the voltage application device 3 attached to the drying device of embodiment 6 can be the same as the electrode portion 2 and the voltage application device 3 attached to the refreshing apparatus of embodiment 1, and therefore detailed description thereof is omitted.

When drying an object, there is a method of forcibly blowing hot air to the object. However, this method has problems that power consumption is large, electricity cost is high, running cost of the drying device is high, and discoloration of the object to be dried occurs due to high-temperature drying.

Another method for drying the object to be dried is to rapidly cool the object containing moisture and freeze it 1 time, and then dry it by sublimating ice. However, this method has a problem that although the quality of the dried material after drying is improved, the freeze dryer is very expensive and the introduction cost of the drying device is high.

Another method for drying the object to be dried is to dehumidify the drying chamber, remove moisture in the indoor air, and adjust the relative humidity. This method has advantages that the energy consumption can be reduced by 50% as compared with the drying with hot air blowing, and the cells in the dried material are not easily destroyed. However, this drying method has a problem that the drying speed is slow and the drying efficiency is low.

That is, it is difficult to efficiently perform drying while reducing the investment cost and the operation cost of the drying apparatus in the conventional drying method.

In contrast, in the drying apparatus according to embodiment 6, static electricity is discharged into the drying chamber 65 by the electrode portion 2, an alternating electric field is formed in the drying chamber 65, and the formed alternating electric field is applied to the object 65a to dry the object 65 a. In this case, the water molecules in the object to be dried 65a are more likely to be vibrated and evaporated due to the effect of the alternating electric field, and the drying speed is increased. Thus, the electrode portion 2 and the voltage application device 3 can be introduced and operated at low cost, and the object 65a to be dried in the drying chamber 65 can be dried efficiently.

The drying apparatus according to embodiment 6 is also provided with a space potential generating device 6 including an electrode unit 2 and a voltage applying device 3, similarly to the refreshing apparatus according to embodiment 1, and the voltage applying device 3 is provided with a voltage adjusting unit 41 (see fig. 3), similarly to the refreshing apparatus according to embodiment 1. In this way, the intensity of the alternating electric field in the drying chamber 65 can be adjusted to an optimum intensity according to the type, quantity, and packing condition of the objects 65a to be dried, or the temperature or humidity in the drying space 65 b. Thus, the initial input cost and the long-term operation cost of the storage device can be reduced, or the influence range of the alternating electric field can be controlled to increase or decrease the target space of the alternating electric field.

The material to be dried is not particularly limited. Therefore, with the drying device of embodiment 6, red pepper, radish, pumpkin, potato, platycodon grandiflorum, carrot, orange, shiitake mushroom, beef jerky, dried persimmon, garlic, coffee, tobacco, dried sardine, yellow croaker, shrimp, dried fish, cod, or sea cucumber can be dried.

Modification of embodiment 6

Fig. 22 is a side view including a partial cross section schematically showing a modification of the drying device according to embodiment 6. As shown in fig. 22, the drying apparatus of the present modification replaces the drying chamber 65 with a large drying chamber 66 (see fig. 21). The drying chamber 66 is a partition defining a drying space 66b, and the drying space 66b is formed in the drying chamber 66 for drying the object 66 a. The drying chamber 66 may be a drying chamber having, for example, a shelf board 66 c.

The drying apparatus of this modification is provided with the electrode portion 2 and the voltage application means 3, and the electrode portion 2 and the voltage application means 3 constitute the space potential generation means 6, as in the drying apparatus of embodiment 6. The electrode portion 2 and the voltage application device 3 attached to the drying device of the present modification can be the same as the electrode portion 2 and the voltage application device 3 attached to the refreshing apparatus of embodiment 1, and therefore detailed description thereof is omitted.

In the present modification, the electrode portion 2 is attached to the lower surface of the ceiling 66d of the drying chamber 66. Thus, the time required for drying the object 66a in the drying chamber 66 can be shortened. However, the electrode portion 2 is covered with an insulating material, and this is omitted in fig. 22.

The electrode portion 2 is preferably attached to the center portion of the plan view of the drying space 66b formed in the drying chamber 66. In this way, a uniform alternating electric field can be formed in the drying chamber 66, i.e., the drying space 66 b.

< Effect of alternating electric field affecting drying treatment >

Next, the effect of the alternating electric field affecting the drying process in the drying apparatus of embodiment 6 will be described.

First, a drying apparatus without a space potential generating apparatus was used as comparative example 9, and a drying apparatus of embodiment 6 equipped with a space potential generating apparatus 6 was used as embodiment example 9. Frozen chinese red peppers were placed in the drying chambers of comparative example 9 and example 9, each of which was equipped with a drying device, and the temperatures were set to 58 ℃, and the drying was performed by means of dehumidification drying, and the drying times were compared.

In the drying rooms equipped with the drying devices in comparative example 9 and example 9, the drying space formed was 2.3m2 in area, and the maximum volume of the drying room was 300 kg. The electrode unit 2 attached to the drying apparatus of example 9 was constituted by a planar electrode plate 20cm wide by 30cm long, and the upper and lower surfaces of the electrode plate were covered with an insulating plastic (ABS resin plate). The insulating material covered on the upper and lower surfaces of the electrode plate has the size of 30cm wide, 40cm long and 150mm thick.

The voltage applied to the electrode part 2 was set to 2200V, and the voltage applied to the frozen red pepper in the drying chamber was set to 30V.

As a result, the drying time of the drying apparatus of example 9 was 28 hours, the drying time of the drying apparatus of comparative example 9 was 38 hours, and the drying time of example 9 was 10 hours shorter than that of comparative example 9. This also means that the drying time of example 9 was 26% shorter than that of comparative example 9. Further, since the power consumption of embodiment 9 is reduced by 16% compared to the power consumption of comparative example 9, the power consumption of embodiment 9 is reduced by 40% compared to the power consumption of comparative example 9.

On the other hand, when the temperature was adjusted from 58 ℃ to 52 ℃, the drying time of the drying apparatus of example 9 was 38 hours, the drying time of the drying apparatus of comparative example 9 was 48 hours, and the drying time of example 9 was 10 hours shorter than that of comparative example 9. Even when dried at a temperature lower than normal, the color of the product can be as high as that of sun-dried product.

Then, a drying apparatus without a space potential generating apparatus was used as comparative example 10, and a drying apparatus of embodiment 6 equipped with a space potential generating apparatus 6 was used as embodiment example 10. General frozen red peppers were put into the drying chambers of comparative example 10 and example 10, each of which was equipped with a drying device, and dried by dehumidification drying at a temperature of 58 ℃ for a comparative drying time.

In the drying rooms in which the drying apparatuses were installed in comparative example 10 and example 10, the area of the formed drying space was 6.6m2, and the maximum volume of the drying space was 1.2 tons. The electrode unit 2 attached to the drying apparatus of example 10 was constituted by a planar electrode plate 20cm wide by 30cm long, and the upper and lower surfaces of the electrode plate were covered with an insulating plastic (ABS resin plate). The insulating material covered on the upper and lower surfaces of the electrode plate has the size of 30cm in width, 40cm in length and 8mm in thickness.

The voltage applied to the electrode part 2 was 1800V, and the voltage applied to the frozen red pepper in the drying chamber was 20V.

As a result, the drying time of the drying apparatus of example 10 was 42 hours, the drying time of the drying apparatus of comparative example 10 was 56 hours, and the drying time of example 10 was 14 hours shorter than that of comparative example 10. This also means that the drying time of the embodiment example 10 was reduced by 24% compared to that of the comparative example 10. Further, since the power consumption of the embodiment 10 is reduced by 17% compared to the power consumption of the comparison case 10, the power consumption of the embodiment 9 is reduced by 41% compared to the power consumption of the comparison case 9.

Next, a drying apparatus without a space potential generating apparatus was used as comparative example 11, and a drying apparatus of the modification of embodiment 6 equipped with a space potential generating apparatus 6 was used as embodiment 11. General frozen red peppers were placed in the drying chambers of comparative example 11 and example 11, each of which was equipped with a drying device, and dried by dehumidification drying at a temperature of 58 ℃.

In the drying chambers in comparative example 11 and example 11, in which the drying devices were installed, the drying space area was 83m2, and the maximum volume of the drying space was 12 tons. The electrode part 2 attached to the drying apparatus of example 11 was constituted by a planar electrode plate 20cm wide by 30cm long, and the upper and lower surfaces of the electrode plate were covered with an insulating plastic (PE plate). The insulating material covered on the upper and lower surfaces of the electrode plate has the size of 30cm in width, 40cm in length and 8mm in thickness.

The voltage applied to the electrode part 2 was set to 2200V, and the voltage applied to the frozen red pepper in the drying chamber was set to 20V.

As a result, the drying time of the drying apparatus of example 11 was 41 hours, the drying time of the drying apparatus of comparative example 11 was 54 hours, and the drying time of example 11 was 13 hours shorter than that of comparative example 11. This also means that the drying time of example 11 was reduced by 24% compared to that of comparative example 11. Further, since the power consumption of example 11 was reduced by 16% compared to comparative example 11, the power consumption of example 11 was reduced by 40% compared to comparative example 9.

< Effect of Voltage adjustment part >

The voltage applied to the electrode portion 2 can be adjusted by the voltage adjusting portion 41 in the drying device of embodiment 6 in accordance with the number of drying objects and the size of the room. That is, the influence spread of the alternating electric field, i.e., the size of the drying space 66b, can be adjusted.

Embodiment 7

< ripening apparatus >

The curing apparatus of embodiment 7 will be explained below. The ripening apparatus of embodiment 7 forms an alternating electric field in a ripening space, and ripens the material to be ripened in the ripening space in which the alternating electric field is formed. The maturation apparatus according to embodiment 7 is provided with a space potential generating device, that is, an electric field forming device that forms an alternating electric field.

FIG. 23 is a schematic cross-sectional view showing an example of the maturation apparatus according to embodiment 7. As shown in fig. 23, the maturation apparatus according to embodiment 7 includes a refrigerator 67, an electrode unit 2, and a voltage applying unit 3. The refrigerator 67 is a delimiting part that delimits a maturing space 67b, and the maturing space 67b is formed in the refrigerator 67 by maturing the material 67a to be matured. The refrigerator 67 may be, for example, a service stand refrigerator having a shelf board 67 c. The electrode portion 2 is installed in the refrigerator 67, i.e., in the ripening space 67 b. The voltage application device 3 applies an alternating voltage VL1 (see fig. 3) to the electrode portion 2, thereby forming an alternating electric field in the refrigerator 67. The electrode portion 2 and the voltage applying device 3 constitute a space potential generating device 6 for forming an alternating electric field in the refrigerator 67.

However, the ripening apparatus according to embodiment 7 may not be provided with the refrigerator 67. At this time, the aging device composed only of the electrode part 2 and the voltage applying device 3 is combined with the refrigerator for aging the object to be aged.

The electrode portion 2 and the voltage application device 3 attached to the drying device of embodiment 7 may be the same as the electrode portion 2 and the voltage application device 3 attached to the refreshing apparatus of embodiment 1, and thus detailed description thereof will be omitted.

In the ripening apparatus of embodiment 7, the alternating electric field is formed in the ripening space 67b by discharging static electricity from the electrode unit 2 into the ripening space 67b, and the formed alternating electric field is applied to the material to be ripened 67a to ripen the material to be ripened 67 a. At this time, the cells in the material to be aged 67a are activated by the effect of the alternating electric field, and the aging of the material to be aged 67a is promoted while maintaining the freshness.

The content of amino acids in food materials such as meat can be increased by adjusting the temperature to accelerate ripening. Meat generally takes more than 15 days to mature, and during this period, a special apparatus is required for inhibiting the propagation of bacteria and managing the temperature, and an expert is required for strict management.

By using embodiment 7 equipped with a space potential generating device, on the other hand, the growth of bacteria can be controlled, and the best maturing effect can be obtained in a short period of time. Furthermore, if the space potential generating device 6 is mounted on a conventional refrigerator, it is possible to preserve several tons or more of beef, pork, or chicken in a short time and at low cost.

The curing apparatus according to embodiment 7 includes a normal refrigerator 67, an electrode unit 2, and a voltage applying unit 3. As described above, the aging of the material to be aged 67a in the aging space 67b can be promoted by the effect of the alternating electric field. Therefore, the maturation apparatus according to embodiment 7 can reduce the initial introduction cost and the long-term operation cost of the maturation apparatus, and can mature the material to be matured 67a in the maturation space 67b more efficiently by the alternating electric field generated by the space potential generating device 6.

In the ripening apparatus according to embodiment 7, the voltage regulator 41 is provided in the voltage applying device 3 (see fig. 3) similarly to the fresh keeping device according to embodiment 1. In this way, the intensity of the alternating electric field generated by the space potential generating device 6 in the refrigerator 67 can be adjusted to an optimum intensity according to the type, quantity, or packaging condition of the material to be cooked 67a, or the temperature or humidity condition in the cooking space 67 b. Thus, the initial introduction cost and the later operation cost of the ripening apparatus are both reduced, the effect of the alternating electric field affecting the ripening process in the ripening apparatus can be improved, and the target space of the alternating electric field can be controlled.

< Effect of alternating electric field affecting ripening treatment >

Next, the effect of the alternating electric field affecting the ripening treatment in the ripening apparatus of embodiment 7 will be described.

First, a maturation apparatus without a space potential generation apparatus was used as comparative example 12, and a maturation apparatus equipped with a space potential generation apparatus 6, that is, a maturation apparatus of embodiment 7 was used as embodiment 12. In the refrigerators equipped with the ripening apparatus of comparative example 12 and example 12, 1kg of beef loin was placed, the beef was ripened from the day of the start of the experiment as the first day to the 30 th day, and the glutamic acid content in 100g of beef was measured on the 15 th day and the 30 th day, respectively. The temperature in the refrigerator of comparative example 12 and example 12 was 2 ℃.

In the refrigerator having the ripening apparatus in comparative example 12 and example 12, respectively, the ripening space was formed to have a flat area of 4m2 and a maximum volume of 150kg of the material to be ripened. The electrode unit 2 attached to the curing apparatus of example 12 was constituted by a planar electrode plate 20cm wide by 30cm long, and the upper and lower surfaces of the electrode plate were covered with an insulating plastic (ABS resin plate). The insulating material covered on the upper and lower surfaces of the electrode plate has the size of 30cm in width, 40cm in length and 8mm in thickness.

The voltage applied to the electrode portion 2 was 1800V, and the voltage applied directly to the beef in the refrigerator 67 was 50V.

First, on day 15, the surface of the beef cooked by the cooking apparatus of example 12 was not mildewed, and was hardly discolored. In contrast, the beef cooked by the cooking apparatus of comparative example 12 had mold on the surface, a layer formed between the surface and the center of the beef, and a layer structure was formed inside the beef.

By the 30 th day, the beef cooked by the cooking apparatuses of the embodiment 12 and the comparative example 12 had mold on the surface thereof, and the inner portion of the beef had a layer structure.

FIG. 24 is a graph showing the results of measuring the glutamic acid content in beef cooked by the cooking apparatus in comparative example 12 and example 12. As shown in FIG. 24, on the day of the start of the experiment, the glutamic acid content in 100 beef was 21mg in both the example 12 and the comparative example 12, 38mg in the example 12, 41mg in the comparative example 12 on the 15 th day, 51mg in the example 12 and 41mg in the comparative example 12 on the 30 th day. That is, the content of glutamic acid did not increase and the ripening of meat was not promoted in the beef of comparative example 12 after day 15, while the content of glutamic acid increased and the ripening of meat was promoted in the beef of example 12 after day 15.

This result shows that the example 12 further promotes the ripening of the material to be ripened, compared with the comparative example 12. Therefore, in the ripening apparatus of embodiment 7, the alternating electric field generated by the space potential generating apparatus 6 can more efficiently ripen the material to be ripened 67a, and the effect of the alternating electric field affecting the ripening process is more excellent.

< Effect of Voltage adjustment part >

The voltage applied to the electrode unit 2 by the voltage adjusting unit 41 in the ripening apparatus according to embodiment 7 can be adjusted according to the number of ripening objects and the size of the room. That is, the influence range of the alternating electric field, that is, the size of the aging space 67b can be adjusted.

Embodiment 8

< cultivating device >

The culture apparatus according to embodiment 8 will be described below. The culture apparatus according to embodiment 8 is a culture apparatus for culturing an object to be cultured by forming an alternating electric field around the object to be cultured. The culture apparatus according to embodiment 8 is provided with a space potential generating device, that is, an electric field forming device for forming an alternating electric field.

FIG. 25 is a schematic cross-sectional view showing an example of the culture device according to embodiment 8. As shown in FIG. 25, the incubation device according to embodiment 8 includes an incubation portion 68, an electrode portion 2, and a voltage application device 3. The cultivating section 68 includes a housing section 68a, a pot 68c for housing a plant object 68b such as a green vegetable in the housing section 68a, and an irradiating section 68d for housing a portion near the housing section 68a, for example, above the housing section 68a, and irradiating the plant object 68b with light. The electrode part 2 is attached to the periphery of the culture object 68b and the vicinity of the receiving part 68a, for example, above the receiving part 68 a. The voltage application device 3 applies an alternating voltage VL1 (see fig. 3) to the electrode portion 2 to form an alternating electric field around the culture object 68 b. The electrode unit 2 and the voltage applying unit 3 constitute a space potential generating unit 6 for forming an alternating electric field around the object 68b to be incubated.

However, the culture device according to embodiment 8 may not have the culture part 68. In this case, the incubation device constituted only by the electrode portion 2 and the voltage application device 3 is combined with the incubation portion corresponding to the incubation portion 68 to incubate the part to be incubated 68 b.

The electrode unit 2 and the voltage application unit 3 attached to the incubation unit of embodiment 8 can be the same as the electrode unit 2 and the voltage application unit 3 attached to the refreshing apparatus of embodiment 1, and thus detailed descriptions thereof will be omitted.

In the incubation device according to embodiment 8, the electrode unit 2 discharges static electricity to the periphery of the incubation object 68b, an alternating electric field is formed around the incubation object 68b, and the formed alternating electric field is applied to the incubation object 68b, thereby incubating the incubation object 68 b. At this time, the water molecules in the culture object 68b are irradiated with the electromagnetic wave of the specific wavelength by the effect of the alternating electric field, and the cells in the culture object 68b are activated, so that the vitality of the culture object 68b is activated, and the culture of the culture object 68b is promoted.

The incubation device according to embodiment 8 includes a general incubation portion 68, an electrode portion 2, and a voltage applying device 3. As described above, the incubation of the incubated object 68b can be facilitated by the effect of the alternating electric field. Therefore, the culture device of embodiment 8 can reduce the initial introduction cost and the long-term running cost of the culture device, and the culture object 68b can be cultured more efficiently by the effect of the alternating electric field generated by the space potential generating device 6.

The voltage application device 3 in the growth device according to embodiment 8 is provided with a voltage adjustment unit 41 (see fig. 3) as in the refreshing device according to embodiment 1. Thus, the intensity of the alternating electric field generated by the space potential generating device 6 around the object to be incubated 68b can be adjusted to the optimum intensity according to the kind, quantity and packing condition of the object to be incubated 68b, or the temperature and humidity around the object to be incubated 68 b. Therefore, the initial introduction cost and the long-term running cost of the ripening apparatus can be reduced, and the effect of the alternating electric field affecting the ripening treatment can be improved or the target space can be controlled.

< Effect of alternating electric field affecting cultivation treatment >

The following describes the effect of the alternating electric field affecting the incubation treatment in the incubation apparatus according to embodiment 8.

First, an incubation device without a space potential generation device was used as a comparative example 13, and an incubation device of embodiment 8 equipped with a space potential generation device 6 was used as an embodiment 13. In the cultivation apparatus of comparative example 13 and example 13, respectively, turf was planted and the cultivation speed of turf was compared from the time of planting to the time of germination and growth to a degree exceeding 10cm from the soil surface.

The accommodating part 68a of the incubation part 68 attached to the incubation devices of comparative example 13 and example 13 has a size of 4m in length, 3m in width, and 2.4m in height. The irradiation unit 68d uses a Light Emitting Diode (LED). The distance from the soil for cultivation in the flowerpot 68c housed in the housing portion 68a to the irradiation portion 68d is 20 cm. The irradiation unit 68d continuously irradiates light for 24 hours. And comparative example 13 and example 13 used the same watering pattern to water the plants.

The electrode part 2 attached to the incubator in example 13 was composed of electrode plates 5cm wide, 10cm long, and 1mm thick. The voltage applied to the electrode portion 2 was set to 3000V.

As a result, no difference in the cultivation speed from sowing to germination was observed between comparative example 13 and example 13. Also, no difference in the cultivation speed of the turf from germination to growth to a level 10cm above the soil surface between comparative example 13 and example 13 could be observed. Further, even when some of the turf was trimmed after growing to a depth of 3cm above the soil surface, no difference was observed between comparative example 13 and example 13 when the trimmed turf was grown.

The grass cultivated in comparative example 13 and example 13 was also extracted, and the soil for cultivation was washed with water to expose roots, and the appearance was compared. As a result, in comparative example 13, the roots were firmly connected to the soil for cultivation before washing, and when the roots were exposed after washing, the roots were also firmly connected to each other, and the roots were thick, and the amount was large as a whole, as compared with comparative example 13.

Next, an incubation device without a space potential generation device was used as a comparative example 14, and an incubation device of embodiment 8 equipped with a space potential generation device 6 was used as an embodiment example 14. In the cultivation apparatus of comparative example 14 and example 14, watery vegetables and vitamin vegetables were cultivated and then eaten, and sensory evaluation was performed on the taste.

The accommodating part 68a of the incubation part 68 attached to the incubation devices of comparative example 14 and example 14 has a size of 4m in length, 3m in width, and 2.4m in height. A light emitting diode is used as the irradiation section 68 d. The distance from the soil for cultivation in the flowerpot 68c housed in the housing portion 68a to the irradiation portion 68d is 20 cm. The irradiation unit 68d continuously irradiates light for 24 hours. And the comparative example 14 and the example 14 used the same water dispersal pattern to water plants.

The electrode part 2 attached to the incubator in example 14 was composed of electrode plates 5cm wide, 10cm long and 1mm thick. The voltage applied to the electrode part 2 was set to 3000V, and voltages above 20cm, 15cm, 10cm, 5cm and 2cm of soil for cultivation were set to 2800V, 500V, 120V, 60V and 10V, respectively.

As a result, the watery dish in comparative example 14 was evaluated as "light taste, feeling excessive moisture", while the watery dish in example 14 was evaluated as "thick taste". In addition, the vitamin vegetables in the comparative example were evaluated as "having much moisture", while the vitamin vegetables in the example were evaluated as "having sweetness of vegetables and greenish feeling".

This means that the cultivation speed of the cultivated material 68b of the example 13 and the example 14 was improved as compared with the comparative example 13 and the comparative example 14. Therefore, when the culture apparatus according to embodiment 8 is used, the effect of the alternating electric field generated by the space potential generating apparatus 6 can more efficiently culture the object to be cultured 68b, and the effect of the alternating electric field affecting the culture treatment in the culture apparatus can be improved.

< Effect of Voltage adjustment part >

The voltage adjustment unit 41 in the incubation apparatus according to embodiment 8 can adjust the voltage applied to the electrode unit 2 according to the number of incubation objects or the size of a room. That is, the influence range of the alternating electric field, i.e., the size of the incubation space can be adjusted.

Embodiment 9

The space potential generating device according to embodiment 1 may be used in an air conditioner (e.g., an air conditioner) or an air cleaner, and forms the air conditioner according to embodiment 9 and the air cleaner according to the modification of embodiment 9.

Fig. 26 is a perspective view schematically showing an example of an air conditioner according to embodiment 9. As shown in fig. 26, the air conditioner according to embodiment 9 includes an air conditioning unit 69 as a main body of the air conditioner, an electrode unit 2, and a voltage applying unit 3. The air cleaner of the modification of embodiment 9 is not shown in the drawings, and includes an air cleaner main body (not shown), an electrode unit 2, and a voltage applying device 3 (see fig. 1).

In the air conditioning apparatus according to embodiment 9, the air conditioning unit 69 forms an alternating electric field in the air-conditioned space 69b, which is a space where air conditioning is performed, and adjusts the temperature of air in the air-conditioned space 69b in which the alternating electric field is formed. Specifically, the electrode unit 2 installed in the conditioned space 69b discharges static electricity into the conditioned space 69b, thereby forming an alternating electric field in the conditioned space 69b, and the temperature of the air in the conditioned space 69b is adjusted while applying the alternating electric field to the air in the conditioned space 69b or living things in the conditioned space 69 b.

The air conditioner 69 is mounted on a wall 69c, and the wall 69c defines an air-conditioned space 69 b. The electrode portion 2 may be installed in the air conditioning space 69b, or may be installed on the rear surface of the air conditioning portion 69 as compared with the air conditioning apparatus main body, that is, the front panel 69d and the air outlet 69e of the air conditioning portion 69, and in this case, the voltage applying device 3 may be installed inside the air conditioning portion 69. In this case, the electrode portion 2 and the voltage application device 3 can be integrated and incorporated in the air conditioning unit 69, so that the apparatus cost can be reduced, and the degree of freedom in selecting the installation location also increases.

The electrode portion 2 and the voltage application device 3, that is, the spatial potential generation device 6, which are mounted on the air conditioning apparatus according to embodiment 9 can be the same as the electrode portion 2 and the voltage application device 3, that is, the spatial potential generation device 6, which are mounted on the refreshing apparatus according to embodiment 1, and therefore detailed description thereof will be omitted.

In the air cleaner of the present modification, an alternating electric field is formed in a cleaning space in which air is cleaned, and air is cleaned in the cleaning space in which the alternating electric field is formed. Specifically, the electrode unit 2 discharges static electricity into the purification space to form an alternating electric field in the purification space, and the air is purified while the alternating electric field is applied to the air in the purification space or the living body in the purification space.

Thus, water molecules in the living body in the air-conditioned space or the purified space are irradiated with electromagnetic waves of a specific wavelength, and cells in the living body are activated. And also, electrons reduced by oxidation in the living body during the biological deterioration are supplied, thereby preventing the oxidation of the living body and inhibiting the activity of bacteria. When the electrode portion 2 and the voltage application device 3 in fig. 26 are installed inside the air cleaner main body, the space potential generation device in the air conditioner according to embodiment 9 can be applied to the air cleaner according to the present modification.

That is, the air conditioner of embodiment 9 and the air purifier of this modification, which are equipped with the space potential generating device, can achieve the freshness retaining and anti-aging effects of living things in the air-conditioned space or the purified space, and can maintain the deodorizing effects in the air-conditioned space and the purified space for a long period of time.

Embodiment 10

The space potential generating device according to embodiment 1 may be used in an electric cooker, and constitutes the electric cooker according to embodiment 10. In this case, the rice cooker of embodiment 10 includes a rice cooker main body (not shown), an electrode portion 2 (see soil 1), and a voltage adding device 3 (see fig. 1).

The electric rice cooker according to embodiment 10 is configured such that an alternating electric field is formed inside a rice cooker (not shown) provided in a main body of the electric rice cooker, and rice is cooked inside the rice cooker in which the alternating electric field is formed. Specifically, the electrode portion 2 discharges static electricity into the rice cooker, an alternating electric field is formed inside the rice cooker, and the formed alternating electric field is applied to the rice inside the rice cooker, thereby cooking the rice.

Thus, water molecules in the rice are irradiated with electromagnetic waves of a specific wavelength, and cells in the rice are activated. And supplying electrons reduced by oxidation during rice deterioration, preventing oxidation of rice, and inhibiting activity of bacteria. That is, by using the electric rice cooker of embodiment 10 equipped with the space potential generating means, the rice in the rice cooker becomes softer, more waxy and more delicious.

The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments described above, and it goes without saying that various modifications can be made without departing from the scope of the invention.

It should be understood that various changes and modifications can be made by those skilled in the art within the spirit of the invention and are within the scope of the invention.

For example, an invention completed by adding or deleting a component or changing a design as appropriate, or an invention completed by adding or deleting a process or changing a process condition by a person skilled in the art in each of the above embodiments is included in the scope of the present invention as long as the person has the gist of the present invention.

Reference numerals

1 refrigerator

2 electrode part

2a plate-like electrode

3 Voltage applying device

4 fresh product

5 fresh-keeping space

6 space potential generating device

11 division plate

13 low-temperature fresh-keeping chamber

14 refrigerating compartment

15 vegetable room

21 major face

22 plate-shaped part

23 opening part

24 power cord

31 Transformer

32 feedback control circuit

33 output control part

34 output terminal

35 Secondary coil

35 a-35 c, 36a, 36b terminals

36 secondary coil

37 AC input socket

38 breaker

39 switching element

41 Voltage regulating part

42 resistance element

43 switching element

44 surge absorber

51 prefabricated refrigerator

51a, 53a, 58 ceiling

52 refrigerator car

52a cooler

52b cold air port

53 vehicle refrigerator

54 shop

55. 55 a-55 d food shelf

56. 56a, 56b support member

56c fixed part

57 floor

Oil groove 61

61a oil

61b food material

62. 63 Water tank

62a, 63a water

63b aquatic organisms

64 Normal temperature storage warehouse

64a stored article

64b holding space

64c, 65c, 66c, 67c shelf board

64d, 66d ceiling

64e winding part

64f screen

64g remote controller

65 drying warehouse

65a, 66a drying object

65b, 66b drying space

66 drying chamber

67 refrigerator

67a quilt aging product

67b ripening space

68 incubation part

68a housing part

68b cultivated substance

68c flowerpot

68d irradiation part

69 air-conditioning part

69b air-conditioned space

69c wall

69d front panel

69e air outlet

VL 1-VL 3 alternating voltage

Claims

1. A fresh-keeping device, an alternating electric field is formed in the fresh-keeping space used to preserve the freshness of fresh products, and the fresh-keeping products placed in the fresh-keeping space where the alternating electric field is formed are kept fresh. In such a fresh-keeping device, it is characterized by: in:

Install

the delimitation section delimiting the above-mentioned fresh-keeping space,

The electrode part installed in the fresh-keeping space demarcated by the above-mentioned demarcation part,

a voltage applying device for applying a first alternating voltage to the electrode portion,

The above-mentioned voltage applying device,

Equipped with a primary coil to which an AC voltage is applied by an AC power source, a secondary coil magnetically connected to the primary coil, and a transformer composed of a primary coil and a secondary coil;

a feedback control circuit that returns the one-side terminal of the secondary coil to the one-side terminal of the primary coil to regulate the voltage in the secondary coil;

an output control part connected to the other side terminal of the secondary coil so as to apply low frequency vibration to the output of the secondary coil;

The voltage regulator converts the voltage value of the third AC voltage input from the AC power supply into a plurality of different voltage values, and applies the third AC voltage whose voltage value is converted to the primary coil as the second AC voltage to This adjusts the voltage value of the first AC voltage;

the electrode part is connected to the other side terminal of the secondary coil through the output control part;

The above-mentioned voltage regulator is provided with a resistance element, which is provided between one terminal of the primary coil or a first terminal serving as the other terminal of the primary coil and the AC power source;

A switching element for switching whether to connect the first terminal to the AC power supply via the resistive element or to directly connect the first terminal to the AC power supply without going through the resistive element.

2. fresh-keeping device according to claim 1, is characterized in that:

The electrode part discharges static electricity into the fresh-keeping space, and forms an alternating electric field in the fresh-keeping space, and the formed alternating electric field is applied to the fresh product to maintain the freshness of the fresh product.

3. The fresh-keeping device according to any one of claims 1-2, wherein:

The said voltage application apparatus applies the 1st alternating voltage whose frequency is 20-100 Hz to the said electrode part.

4. The fresh-keeping device according to claim 1, characterized in that: a fresh-keeping device without a ground wire.

5. The fresh-keeping device according to claim 1, wherein:

The current flowing through the secondary coil is 0.002-0.2A fresh-keeping device.

6. The fresh-keeping device according to claim 1, wherein:

The electrode portion is a first electrode, and the voltage applying device is a freshness-preserving device that does not have any electrical connection with electrodes other than the first electrode.

7. The fresh-keeping device according to claim 1 or 6, characterized in that:

The surface of the electrode part is coated with a photocatalyst or an oxygen catalyst.

8. The fresh-keeping device according to claim 1, wherein:

The demarcation part is a refrigerator, the fresh-keeping space is formed in the refrigerator, and the electrode part is installed in a fresh-keeping device in the refrigerator.

9. A fryer device, comprising: an oil tank storing oil; an electrode part installed in the oil tank; a voltage applying device for forming an alternating electric field in the oil tank by applying a first alternating voltage to the electrode part 1, It is characterized by:

The above-mentioned voltage applying device is equipped with a primary coil to which an AC voltage is applied by an AC power source, a secondary coil magnetically connected to the primary coil, and a transformer composed of the primary coil and the secondary coil;

10. The fryer device of claim 9, wherein:

The electrode portion discharges static electricity into the oil tank to form the alternating electric field in the oil tank, and the formed alternating electric field is applied to the oil stored in the oil tank.

11. The fryer device according to any one of claims 9-10, wherein:

12. The fryer apparatus of claim 9, wherein:

Not grounded.

13. The fryer apparatus of claim 9, wherein:

The current flowing through the secondary coil is 0.002 to 0.2A.

14. The fryer apparatus of claim 9, wherein:

The electrode portion is a first electrode, and the voltage applying device is not electrically connected to electrodes other than the first electrode.

15. The fryer device of claim 9 or 14, wherein:

The surface of the electrode part is coated with photocatalyst or oxygen catalyst.

16. A space potential generating device, characterized in that: in the space potential generating device for forming an alternating electric field, a

an electrode portion to which a first alternating voltage is applied, and a voltage applying device for forming the alternating electric field around the electrode portion by applying the first alternating voltage to the electrode portion,

an output control part connected to the other side terminal of the secondary coil to apply low frequency vibration to the output of the secondary coil;

A voltage regulator that converts the voltage value of the third AC voltage input from the AC power supply into a plurality of different voltage values, and applies the third AC voltage whose voltage value is converted to the primary coil as the second AC voltage, thereby to adjust the voltage value of the first AC voltage;

17. The space potential generating device according to claim 16, wherein:

The electrode portion discharges static electricity around the electrode portion, and an alternating electric field is formed around the electrode portion.

18. The space potential generating device according to claim 16, wherein:

The current flowing through the secondary coil is 0.002 to 0.2A.

19. The space potential generating device according to claim 16, wherein:

Ungrounded space potential generating device.

20. The space potential generating device according to claim 16, wherein:

The electrode portion is a first electrode,

The above-mentioned voltage applying device is a space potential generating device that does not have any electrical connection with electrodes other than the above-mentioned first electrode.

21. The space potential generating device according to claim 16, wherein:

The surface of the above-mentioned electrode portion is coated with a photocatalyst or an oxygen catalyst space potential generating device.

22. A water activation device, characterized in that it is equipped with the space potential generating device according to any one of claims 16 to 21, and a water tank in which water is stored, wherein the electrode part is installed in the water tank, and in the water tank The alternating electric field is formed, and the water stored in the water tank in which the alternating electric field is formed is activated.

23. In the water activation device according to claim 22, it is characterized in that:

The electrode part discharges static electricity into the water tank, the alternating electric field is formed in the water tank, and the formed alternating electric field is applied to the water surface to activate the water, which is a water activation device.

24. cultivating device, it is characterized in that: be equipped with the space potential generating device according to any one of claim 16-21, and the water tank that has stored water, above-mentioned electrode part is installed in above-mentioned water tank, forms above-mentioned in above-mentioned water tank. In the alternating electric field, aquatic organisms are cultivated in the above-mentioned tank where the alternating electric field is formed.

25. culturing device according to claim 24, is characterized in that:

The electrode part discharges static electricity into the water tank, the alternating electric field is formed in the water tank, and the formed alternating electric field is applied to aquatic organisms, and the aquatic organisms are cultivated.

26. A drying device, characterized in that it is equipped with the space potential generating device according to any one of claims 16 to 21, and a drying chamber for drying the object to be dried, wherein the electrode part is installed in the drying chamber, and in the drying chamber An alternating electric field is formed in the drying chamber, and the object to be dried is dried in the drying chamber in which the alternating electric field is formed.

27. The drying device according to claim 26, characterized in that:

The electrode part discharges static electricity into the drying chamber to form the alternating electric field in the drying chamber, and the formed alternating electric field is applied to the object to be dried to dry the object to be dried.

28. An aging device, characterized in that it is equipped with the space potential generating device according to any one of claims 16 to 21, wherein the electrode portion is installed in an aging space for aging the object to be matured, and is formed in the aging space. The above-mentioned alternating electric field ripens the object to be ripened in the ripening space in which the alternating electric field is formed.

29. The maturing device of claim 28, wherein:

The electrode part discharges static electricity into the aging space, and forms the alternating electric field in the aging space, and the formed alternating electric field is applied to the object to be ripened to ripen the object.

30. A cultivation device, characterized in that:

Equipped with the space potential generating device according to any one of claims 16 to 21, the electrode part is installed around the object to be cultivated, an alternating electric field is formed around the object to be cultivated, and an alternating electric field is formed around the object to be cultivated. The culture is grown.

31. In the cultivation device according to claim 30, wherein:

The electrode part discharges static electricity around the object to be cultivated, thereby forming an alternating electric field around the object to be cultivated, and the formed alternating electric field is applied to the object to be cultivated to cultivate the object to be cultivated. device.

32. An air-conditioning apparatus, characterized in that it is equipped with the space potential generating device described in any one of claims 16 to 21, wherein the electrode portion is installed in an air-conditioned space where air conditioning is performed, and the above-mentioned air-conditioning space is formed in the air-conditioned space. The alternating electric field adjusts the temperature of the air in the air-conditioned space where the alternating electric field is formed.

33. The air conditioner of claim 32, wherein:

The electrode part discharges static electricity into the air-conditioned space to form the alternating electric field in the air-conditioned space, and the formed alternating electric field is applied to the air in the air-conditioned space to adjust the temperature of the air in the air-conditioned space.