JP2016112205A - Radio wave generation device - Google Patents

Abstract

An object of the present invention is to provide a device suitable for maintaining the freshness of foodstuffs and the like stored in a predetermined container. A radio wave generator 2 includes a pair of thin plate electrodes 21 and 22 arranged with a gap therebetween, and an oscillator for causing a high-frequency current to flow through the thin plate electrode 21. The pair of thin plate electrodes 21 and 22 includes: The thin plate electrode 22 is connected to the ground, and is installed in the housing portion while being electrically insulated from the inner wall of the housing portion. Further, the side surface portions 21B and 22B of the thin plate electrode 22 are provided with adjusting means capable of adjusting the height according to the depth of the accommodating portion. When a high-frequency current is passed from the oscillator to the thin plate electrode 21, an oscillation current is induced between the pair of thin plate electrodes 21 and 22 to generate radio waves, and an object such as a food placed on the pair of thin plate electrodes 21 and 22. The object is irradiated with the radio wave. [Selection] Figure 5

Description

  The present invention relates to an apparatus for irradiating a food material containing moisture with radio waves to maintain the freshness of the food material or the like, or to enhance umami.

Conventionally, it is widely known that by forming a high-voltage electric field in a fryer, oxidation of oil in the oil tank can be suppressed (for example, see Patent Documents 1 and 2).
This action refines the cluster, which is a molecule of water or oil, thereby improving heat conduction and increasing the evaporation rate of water, thereby shortening the fly time and lowering the fly temperature. As a result, the oxidation and deterioration of the oil is suppressed, the water in the oil evaporates rapidly, and the generated fine suspended matter settles and solidifies in the lower part without diffusing, making the inside succulent and rolling. You can make fried foods that are fried and crisp.

JP 11-113761 A JP 2002-136430 A

However, since all such devices generate a high-voltage electric field, there is a risk that a cook or the like may be touched by an electrode in the oil tank and get an electric shock.
Especially in deep-fried cooking, the food in the oil tank is scooped up with a metal rake monkey, etc., so there is a possibility that the rake monkey etc. will touch the electrode each time. I was often shocked.

  On the other hand, the applicant of the present invention can maintain the freshness of the ingredients by irradiating the ingredients with radio waves, not only for use in the fryer, but also by causing the radio waves to vibrate the moisture contained in the ingredients, thereby suppressing the transpiration of the ingredients. Focused on. Here, when using a device that emits radio waves, it is necessary to avoid the risk of electric shock as described above. Moreover, since foodstuffs etc. are preserve | saved and conveyed in various forms, such as a refrigerator, a conveyance vehicle, a container, the apparatus suitable for keeping the freshness of foodstuffs in the accommodated state is calculated | required.

  Then, an object of this invention is to provide the apparatus suitable for maintaining the freshness in the state which accommodated foodstuffs etc. in the predetermined | prescribed accommodation.

  In order to achieve the above object, a radio wave generator according to an aspect of the present invention is an apparatus that radiates radio waves onto an object that contains moisture while being housed in a predetermined housing section, with a gap therebetween. A pair of L-shaped thin plate electrodes composed of a first thin plate electrode and a second thin plate electrode, and an oscillator for supplying a high-frequency current to the first thin plate electrode, the pair of thin plate electrodes Each consisting of a bottom surface portion placed on the bottom surface side of the housing portion and a side surface portion extending upward from one side edge portion of the bottom surface portion, and the pair of thin plate electrodes, The bottom surface portions face each other and face each other, and are electrically insulated from the housing portion. The side surface portion is provided with an adjusting means capable of adjusting the height according to the depth of the housing portion. In this case, a high frequency current is allowed to flow from the oscillator to the first thin plate electrode. The vibration current is induced along with radio waves generated between the pair of thin plate electrodes, the radio wave is characterized in that it is irradiated to the object placed between the pair of sheet electrodes.

  In addition, an accommodating part means the oil tank of a fryer, the store | warehouse | chamber of a refrigerator, or a container, for example. Further, the object is contained in the oil tank of these fryer, the refrigerator, or in the container, and particularly contains water and is, for example, a food product.

  In addition, the thin plate electrode has a substantially U-shaped cross section, and further includes an upper surface portion extending in parallel with the bottom surface portion from one side edge portion of the side surface portion, and the pair of thin plate electrodes, The opening formed by the top surface portion, the side surface portion, and the bottom surface portion may be opposed to each other in the housing portion, and may be electrically insulated from the housing portion.

  The second thin plate electrode may be connected to the ground.

  Further, the pair of thin plate electrodes may be attached to the inner wall of the housing portion by the magnetic force of a magnet covered with an insulator.

  Further, the apparatus may further include a measuring unit that measures a current value between the pair of thin plate electrodes, and a first adjusting unit that adjusts the strength of the high-frequency current based on the resistance value measured by the measuring unit. Good.

  Further, it may further include a measuring unit that measures a current value between the pair of thin plate electrodes and a second adjusting unit that adjusts the length of the gap between the pair of thin plate electrodes.

  The pair of thin plate electrodes may be provided with hexagonal through holes.

  The radio wave may be a long wave.

  ADVANTAGE OF THE INVENTION According to this invention, the freshness can be maintained in the state which accommodated the foodstuff etc. in the predetermined | prescribed accommodation, respond | corresponding to the dimension of various things, and ensuring safety | security.

It is a sectional side view which shows the fryer which mounts the electromagnetic wave generator which concerns on embodiment of this invention. It is a perspective view which shows the refrigerator which mounts the electromagnetic wave generator which concerns on embodiment of this invention. It is a perspective view which shows the refrigerator which mounts the electromagnetic wave generator which concerns on embodiment of this invention. It is a perspective view which shows the container carrying the electromagnetic wave generator which concerns on embodiment of this invention. It is an external appearance perspective view which shows the electromagnetic wave generator which concerns on this embodiment. It is an external appearance perspective view which shows the state which partially decomposed | disassembled the electromagnetic wave generator which concerns on this embodiment. It is an external appearance perspective view which shows the electromagnetic wave generator which concerns on other embodiment of this invention. It is an external appearance perspective view which shows the electromagnetic wave generator which concerns on other embodiment of this invention. It is an external appearance perspective view which shows the electromagnetic wave generator which concerns on other embodiment of this invention. This is data verifying the effect of a fryer using the radio wave generator according to the present embodiment, and shows the amount of polar compound (TMP). This is data verifying the effect of a fryer using the radio wave generator according to the present embodiment, and shows the amount of polar compound (TMP). It is the data which verified the effect by the fryer using the radio wave generator concerning this embodiment, and shows acid value (AV). It is the data which verified the effect by the fryer using the radio wave generator concerning this embodiment, and shows a peroxide value. It is the data which verified the effect by the fryer using the radio wave generator concerning this embodiment, and shows trans fatty acid content. It is the data which verified the effect by the fryer using the radio wave generator concerning this embodiment, Comprising: Umami (content of glutamic acid) is shown. It is a schematic diagram showing the characteristic time domain of water structure and protein dynamics obtained by broadband dielectric spectroscopy (Biophysics 47 (5), 302-308 (2007) "Protein and water dynamics in various spatiotemporal domains" “Hiragi Yagihara, Naoki Shinyashiki, Rio Kita, p. 303. Fig.1 Hierarchical dynamics observed for water and protein in various time / frequency scales of observation by broadband dielectric spectroscopy (BDS)).

Hereinafter, a radio wave generator according to an embodiment of the present invention will be described with reference to the drawings.
1 to 3 show usage states of the radio wave generators 2, 5, 5B according to the embodiment of the present invention, and FIG. 1 shows a case where the radio wave generator 2 is used for a flyer 1A. FIG. 3 shows a case where the radio wave generators 2 and 5 are used in the refrigerator 1B, respectively. FIG. 4 shows a state where the radio wave generator 5B is used in the container 1C. The radio wave generating device 5B is a device having a size different from that of the radio wave generating device 5, but the configuration other than the size is basically the same.

In the example of FIG. 1, the radio wave generator 2 is installed in a metal oil tank of the flyer 1A. When the radio wave generator 2 irradiates the food in the oil tank with radio waves, the taste of the deep-fried food becomes better, and at the same time, the oxidation and deterioration of the oil can be effectively suppressed.
2 and 3, the radio wave generators 2 and 5 are installed in the refrigerator 1B. When radio waves are emitted from the radio wave generators 2 and 5 to the foodstuffs in the cabinet, the moisture contained in the foodstuffs slightly vibrates and the transpiration action is suppressed, whereby the freshness of the foodstuffs can be maintained. In particular, in the example of FIG. 3, the food can be irradiated from above, below, left, and right, so that the freshness of the food can be more effectively maintained.
In the example of FIG. 4, the radio wave generator 5B is installed in the container 1C. When a radio wave is irradiated from the radio wave generator 5B to the food item in the container 1C, the moisture contained in the food item slightly vibrates and the transpiration is suppressed, thereby maintaining the freshness of the food item. be able to.
Hereinafter, together with the radio wave generators 2, 5, 5 B, the oil tank of the fryer 1 </ b> A that contains ingredients containing moisture, the inside of the refrigerator 1 </ b> B, or the container 1 </ b> C may be collectively referred to as “accommodating unit”. is there.

  As shown in FIGS. 5 and 6, the radio wave generator 2 includes a pair of thin plate electrodes 21, 22, a connector 3 that couples the pair of thin plate electrodes 21, 22, and an oscillator that sends a high-frequency current to the thin plate electrode 21. It is composed of a built-in relay device, and is housed and installed in a state of being electrically insulated from the inner wall of the housing part.

Each of the pair of thin plate electrodes 21 and 22 is a conductive metal plate bent into an L shape, and includes a substrate 211 and 221 and an extension plate 212 and 222, respectively.
The substrates 211 and 221 each have an L-shaped cross section, and include base portions 2111 and 2111, and standing portions 2112 and 2212 that rise up at right angles from one side edge portions of the base portions 2111 and 2111, and the base portion 2111. , 2211 constitute the bottom surface portions 21A, 22A of the thin plate electrodes 21, 22.
The extension plates 212 and 222 are rectangular flat plates and are detachably attached to the standing portions 2112 and 2212 of the substrates 211 and 221. The extension plates 212 and 222 together with the standing portions 2112 and 2212 of the substrates 211 and 221 constitute side portions 21B and 22B of the thin plate electrodes 21 and 22, respectively.

The L-shape of the thin plate electrodes 21 and 22 is bent in an R shape with corners slightly rounded so that electromagnetic induction can be caused uniformly in the housing portion in a radial pattern. Yes.
By adopting such an L-shape, radio waves can be generated from both the bottom surface portions 21A and 22A and the side surface portions 21B and 22B, and therefore, between the bottom surface portions 21A and 22A, between the side surface portions 21B and 22B, or the bottom surface portion 22A. , 22A can irradiate radio waves evenly to foods placed on 22A, and the obtained effect is great.
The pair of thin plate electrodes 21 and 22 are disposed in the accommodating portion so as to face each other with a gap S therebetween.

An insulator 23 is attached to the pair of thin plate electrodes 21 and 22 on the lower surface side of the bottom surface portions 21A and 22B. The insulator 23 slightly protrudes to the outside, so that the radio wave generator 2 ensures an electrically insulated state on the bottom surface side and the side surface side without contacting a member such as the inner wall of the housing portion. ing.
As the insulating material of the insulator 23, a fluororesin such as polytetrafluoroethylene (for example, Teflon-registered trademark) can be used.

In addition, a plurality of hexagonal through holes 21a and 22a are formed in the base portions 211 and 211 of the substrates 211 and 221 constituting the bottom surface portions 21A and 22A of the thin plate electrodes 21 and 22, respectively. Since the hexagonal through holes 21a and 22a are provided, when the radio wave generator 2 is used for the fryer 1, cooking oil in the oil tank passes through the through holes 21a and 22a from below to above when heated. When it rises, it creates a spiral flow. And according to this convection, it will be in the state where the cooking oil in an oil tank is always stirred, and it becomes difficult for the temperature of the cooking oil in an oil tank to fall.
Note that the through holes 21a and 22a may also be provided in the side surfaces 21B and 22B.

  Also, a plurality of through holes 21b and 22b for screwing are attached to the bottom surface portions 21A and 22A of the thin plate electrodes 21 and 22 to be connected to and attached to the connector 3. The through holes 21b and 22b are connected to the through holes 31a and 32a of the connector 3 by fastening the screws 31c and 32c, thereby connecting the thin plate electrodes 21 and 22 to the connector 3 and a pair of thin plate electrodes. 21 and 22 can be connected.

The side portions 21B and 22B of the thin plate electrodes 21 and 22 are provided with terminals 210 and 220, respectively, for connecting one end of the conducting wires collected in the relay device at one end portion.
These terminals 210 and 220 are configured as rod-like members attached to projecting upward on the upper ends of the side portions 21B and 22B. When the radio wave generator 2 is used in the fryer 1A and installed in an oil tank In other words, the amount of cooking oil can be adjusted so as to protrude from the oil surface.

The side surface portions 21B and 22B of the thin plate electrodes 21 and 22 are respectively constituted by standing portions 2112 and 2212 and extension plates 212 and 222 of the substrates 211 and 221.
The side portions 21B and 22B have the same structure, but the side portion 21B will be described below.

  The standing portion 2112 is a flat plate-like portion that is connected to the base portion 2111 that constitutes the bottom surface portion 21A, and is erected at a right angle, and has a predetermined height. In the vicinity of both ends in the width direction of the standing portion 2112, two through holes 2112 a and 2112 b for screwing the extension plate 212 are provided along the height direction.

  On the other hand, the extension plate 212 has a rectangular flat plate shape and is detachably attached to the standing portion 2112. The extension plate 212 is provided with through holes 212a and 212b in the vicinity of both ends in the width direction corresponding to the through holes 2112a and 2112b of the standing portion 2112.

  The screw 212c is communicated with the through holes 2112a and 2112b of the upright portion 2112 and the through holes 212a and 212b of the extension plate 212, and the extension plate 212 is integrated with the upright portion 2112 by fastening with the nut 212d. Therefore, the side part 21B can be configured.

Here, the height of the side surface portion 21B can be adjusted in three stages by making the through holes 2112a and 2112b correspond to the through holes 212a and 212b.
That is, the height of the side surface portion 21B can be made the lowest by fastening the standing portion 2112 and the extension plate 212 with the screw 212c and the nut 212d so that the through hole 2112b and the through 212a correspond to each other. On the other hand, the through-hole 2112b and the through-hole 212a, and the through-hole 2112b and the through-hole 212b are made to correspond to each other, and the standing portion 2112 and the extension plate 212 are fastened by the screw 212c and the nut 212d. The height of the side surface portion 21 </ b> B can be made higher than that in the case where these are matched. Furthermore, the height of the side surface portion 21B can be made highest by associating the through hole 2112a with the through hole 212b and fastening the upright portion 2112 and the extension plate 212 with the screw 212c and the nut 212d. .

In the above description, the side surface portion 21B has been described, but the side surface portion 22B has the same structure as the side surface portion 21B.
That is, the standing portion 2212 is connected to the base portion 2211 constituting the bottom surface portion 22A, and is erected at a right angle, and in the vicinity of both ends in the width direction, two extension plates 222 along the height direction. Through holes 2212a and 2212b are provided for screwing. The extension plate 222 has through holes 222a and 222b in the vicinity of both ends in the width direction corresponding to the through holes 2212a and 2212b of the standing portion 2212, and is detachably attached to the standing portion 2212.
Then, the screw 222c is passed through the through holes 2212a and 2212b of the standing portion 2212 and the through holes 222a and 222b of the extension plate 222, and is fastened with a nut 222d, whereby the extension plate 222 is integrated with the standing portion 2212. Therefore, the side surface portion 22B can be configured. At this time, the height can be adjusted to three levels in the same manner as the side surface portion 21B.

The connector 3 is attached to the back side of the pair of thin plate electrodes 21, 22, supports the thin plate electrodes 21, 22 from below in the accommodating portion, and connects the pair of thin plate electrodes 21, 22.
The connector 3 is a rectangular thin plate made of an insulating material such as a fluororesin such as polytetrafluoroethylene (for example, Teflon-registered trademark), and has a plurality of through holes 3a. Here, the through-hole 3a has a hexagonal shape like the through-holes 21a and 22a. When the radio wave generator 2 is used for the fryer 1A, convection can be caused in the oil tank. In addition, this 3a can also serve as a screwing hole for screwing the thin plate electrodes 21 and 22 to the connector 3.

  In the connection of the pair of thin plate electrodes 21 and 22, the screw 31 c communicates with the through hole 21 b of the thin plate electrode 21 and the through hole 31 a of the connector 3 with the thin plate electrode 21 supported from the lower surface side at one end side. The screw 32c is connected and fastened to the through hole 22b of the thin plate electrode 22 and the through hole 32a of the connector 3 with the thin plate electrode 22 supported from the lower surface side at the other end side. The electrodes 21 and 22 are connected to each other.

Since a plurality of through holes 21b and 22b of the thin plate electrodes 21 and 22 are provided along the direction in which the thin plate electrodes 21 and 22 are connected to each other, any one of the plurality of through holes 21b and 22b provided. The selected through-holes 21b and 22b and the through-holes 31a and 32a are made to correspond to each other, and the thin plate electrodes 21 and 22 and the connector 3 are connected by screws 31c and 32c, so that the gap S between the thin plate electrodes 21 and 22 is desired. Can be set to a length of
Further, since the connector 3 is made of an insulating material, the insulating properties between the thin plate electrodes 21 and 22 and between the heating device 12 and the thin plate electrodes 21 and 22 are secured.

The relay device incorporates an oscillator for passing a high-frequency current through the thin plate electrode 21 and a measuring device for measuring the current value between the thin plate electrodes 21 and 22, and is connected to an external power source to supply power to these oscillators and measuring devices. Is supplied.
One end of a conducting wire is connected to the terminals 210 and 220 of the pair of thin plate electrodes 21 and 22, respectively, and the other end is concentrated in the relay device.

In the relay device, the conducting wire connected to the terminal 210 of the thin plate electrode 21 is connected to the oscillator, and a high frequency current flows from the oscillator to the thin plate electrode 21.
On the other hand, the conducting wire connected to the terminal 42 of the thin plate electrode 22 is connected to the ground.
The thin plate electrode 22 is provided with parts and devices for protecting the device, such as a fuse and a current interrupting device, in order to prevent a failure of the device when a large current flows between the thin plate electrodes 21 and 22. May be.

Furthermore, the conducting wire connected to the terminals 210 and 220 is connected to a measuring instrument that measures the resistance value between the thin plate electrodes 21 and 22. This measuring instrument always or intermittently measures the current value or resistance value between the thin plate electrodes 21 and 22 based on the current flowing through the conducting wire.
The oscillator can adjust the intensity of the high-frequency current to keep the current value between the thin plate electrodes 21 and 22 at a predetermined value based on the measurement by the measuring instrument.

  In the radio wave generator 2 having the above configuration, when a high-frequency current is passed through the thin plate electrode 21, an oscillating current is generated between the pair of thin plate electrodes 21 and 22 insulated by the gap S. The oscillating current generates radio waves (radio waves), and the radio waves are applied to the food material placed on the thin plate electrodes 21 or between the thin plate electrodes 21.

  In this regard, in this example, it is preferable to use a long wave of 150 kHz or less as the radio wave. By using a long wave, it is not necessary to shield the periphery of the radio wave generator 2 and it can be vibrated minutely without adding too much energy to the moisture in the object. The radio wave used in this example is preferably 150 kHz or less, and can be applied to a very long wave, a very long wave, or a very long wave.

  In addition, it is clear from the data shown in FIG. 16 that it is preferable to use a long wave of 150 kHz or less as the radio wave used in this example. That is, according to the data shown in FIG. 16 clarifying the water dynamics by dielectric spectroscopy, it is understood that the frequency band of 150 kHz or less is most suitable for irradiating the ice with ice. Therefore, it is optimal to irradiate this long wave of 150 kHz or less by the radio wave generator 2 particularly for foods and the like that are stored frozen.

For example, in the case of a high-frequency current of 50 kHz, a long wave (radio wave) accompanied by electromagnetic field vibration accompanied by a polarity change of 50,000 times / second is transmitted. When the electromagnetic field vibration reaches a food material having a dipole, an electrostatic induction phenomenon appears.
The freshness of the food can be maintained by generating a repulsive force by causing the electrostatic induction phenomenon to continue and minutely vibrating the moisture in the food. In addition, when used in the fryer 1A, the penetration of oil into the food is hindered, the electrostatic adsorption effect and the drip and moisture that ooze out from the food are refined and condensed, and oil splash is suppressed, and further the friction Since the food itself is heated by heat, the oil temperature can be lowered by about 10 ° C., and the effect of suppressing the oxidation of oil can be exhibited.

  The radio wave generator 2 according to the present embodiment is provided in a predetermined through hole 21b, 22b among the plurality of through holes 21b, 22b provided in the thin plate electrodes 21, 22, and the connector 3. Although the length of the gap S is made variable by screwing the through holes 31a and 32a, such a structure that makes the length of the gap S variable can be another structure.

For example, it is possible to use an insulating support made up of a guide rail whose upper surface is open and an adjustment bolt that is fitted in the guide rail and has a thread groove on the outer peripheral surface.
The adjustment bolt is screwed into the adjustment bolt, and by rotating the adjustment bolt, a support plate that slides in the length direction on the adjustment bolt and the guide rail is attached, and a pair of thin plate electrodes is mounted on the support plate. 21 and 22 are supported. By turning the adjusting bolt and sliding the support plate in the length direction of the adjusting bolt and the guide rail, the pair of thin plate electrodes 21 and 22 can be moved toward and away from each other. Thereby, a gap S having a desired length can be provided between the pair of thin plate electrodes 21 and 22.
Note that such a support is operable based on the control of the relay device, and the length of the gap S is set to keep the current value between the thin plate electrodes 21 and 22 at a predetermined value based on the measurement by the measuring instrument. It may be possible to adjust the height.

  In the radio wave generating device 2 according to the present embodiment described above, the height of the side surface portions 21B and 22B can be adjusted in three stages for the thin plate electrodes 21 and 22, but not limited to this, by other structures, The height can be adjusted more finely and freely. A radio wave generator 4 according to another example is shown in FIG.

As shown in FIG. 7, the thin plate electrodes 41, 42 included in the radio wave generator 4 are composed of the bottom surface portions 41 </ b> A, 42 </ b> A and the side surface portions 41 </ b> B, 42 </ b> B like the thin plate electrodes 21, 22. Each of the base plates 411 and 421 includes standing portions 4112 and 4212 and extension plates 412 and 422.
Both side portions 41B and 42B have the same structure, but first, the side portion 41B will be described below.

  The standing portion 4112 is a flat plate portion that is connected to the base portion 4111 constituting the bottom surface portion 41A, and is erected at a right angle, and has a predetermined height. In the vicinity of both ends in the width direction of the standing portion 4112, through grooves 4112a having a length in the height direction are provided in order to screw the extension plate 412.

  The extension plate 412 has a rectangular flat plate shape and is detachably attached to the standing portion 4112. The extension plate 412 is provided with through holes 412a in the vicinity of both ends in the width direction corresponding to the through grooves 4112a of the standing portion 4112.

  Then, the screw 412b is communicated with the through groove 4112a of the standing portion 4112 and the through hole 412a of the extension plate 412 and fastened with a nut 412c, whereby the extension plate 412 is integrally attached to the standing portion 4112. The side part 41B can be configured.

Here, the height of the side surface portion 41B can be adjusted within the range of the length of the through groove 4112a by making the through groove 4112a correspond to the through hole 412a.
That is, the height of the side surface portion 41B is made the lowest by fastening the standing portion 4112 and the extension plate 412 with the screw 412b and the nut 412c with the lower end portion of the through groove 4112a and the through 412a corresponding to each other. Can do. Further, the height of the side surface portion 41B is made highest by fastening the standing portion 4112 and the extension plate 412 with the screw 412b and the nut 412c with the upper end portion of the through groove 4112a corresponding to the through hole 412a. be able to. On the other hand, an arbitrary position between the upper end portion and the lower end portion of the through groove 4112a is made to correspond to the through hole 412a, and the standing portion 4112 and the extension plate 412 are fastened by screws 412b and nuts 412c, thereby penetrating. The height of the side surface portion 41B can be set to an arbitrary height within the range of the length of the groove 4112a.

Although the side surface portion 41B has been described above, the side surface portion 42B also has the same structure as the side surface portion 41B.
In other words, the standing portion 4212 is continuous with the base portion 4211 constituting the bottom surface portion 42A, and is erected at a right angle, and in the vicinity of both ends in the width direction, a through groove 4212a for screwing the extension plate 422, respectively. Is provided. The extension plate 422 has through holes 422a in the vicinity of both ends in the width direction corresponding to the through grooves 4212a of the standing portions 4212, and is detachably attached to the standing portions 4212.
Then, the screw 422b is communicated with the through groove 4212a of the standing portion 4212 and the through hole 422a of the extension plate 422 and fastened with a nut 422c, whereby the extension plate 422 is integrally attached to the standing portion 4212. The side surface portion 42B can be configured. At this time, the height can be adjusted to an arbitrary height within the range of the length of the through groove 4212a in the same manner as the side surface portion 41B.

  As described above, the example of the structure in which the height of the side surface portions 21B, 22B, 41B, and 42B is adjusted by the radio wave generating devices 2 and 4 is shown. However, regardless of these examples, other various structures can be used. The height of the side portions 21B, 22B, 41B, and 42B can be adjusted, and the structure to be taken in the implementation of the present invention is not limited.

Next, the radio wave generator 5 according to another modification of the radio wave generator 2 described above will be described.
As shown in FIG. 8, each of the pair of thin plate electrodes 51 and 52 included in the radio wave generator 5 has a substantially U-shaped cross section, and is formed from substrates 511 and 521 and extension plates 512 and 522, respectively. Become.

The substrates 511 and 521 each have an L-shaped cross section, and include base portions 5111 and 5211 and standing portions 5112 and 5212 that rise upward at right angles from one side edge of the base portions 5111 and 5211.
The extension plates 512 and 522 are parallel to the extension portions 5121 and 5221 that are detachably attached to the standing portions 5112 and 5212 of the substrates 511 and 521, and from the upper ends of the extension portions 5121 and 5221 to the base portions 5111 and 5211. It is comprised by the extension parts 5122 and 5222 extended in the direction.

The base portions 5111 and 5211 constitute the bottom surface portions 51A and 52A of the thin plate electrodes 51 and 52, respectively.
Further, the standing portions 5112 and 5212 of the substrates 511 and 521 constitute side portions 51B and 52B of the thin plate electrodes 51 and 52 together with the extending portions 5121 and 5221 of the extension plates 512 and 522, respectively.
Further, the extended portions 5122 and 5222 of the extension plates 512 and 522 constitute the top surface portions 51C and 52C of the thin plate electrodes 51 and 52, respectively.

The thin plate electrodes 51 and 52 having such a configuration have means for adjusting the height of the side surface portions 51B and 52B, similarly to the thin plate electrodes 21 and 22, but further have top surface portions 51C and 52C. As a result, the food or the like placed between the pair of opposed thin plate electrodes 51 and 52 can be covered from the three sides of the bottom surface, the side surface, and the top surface, and radio waves can be irradiated from the three sides.
Thereby, while being able to heat a foodstuff etc. uniformly, a foodstuff etc. can be heated efficiently.

In the radio wave generator 2 according to the present embodiment described above, the pair of thin plate electrodes 21 and 22 are connected by the connector 3, but the thin plate electrodes 21 and 22 are fixedly fixed relative to each other at a certain distance. The thin plate electrodes 21 and 22 are not necessarily connected by the connector 3 in the implementation of the present invention.
In this regard, a radio wave generator 6 according to another example that implements the present invention without using the connector 3 will be described with reference to FIG.

  The pair of thin plate electrodes 61 and 62 included in the radio wave generator 6 is a conductive metal plate bent into an L shape like the thin plate electrodes 21 and 22 described above, and includes a horizontal bottom surface portion 61A and 62A, It is comprised from the side surface parts 61B and 62B which extended right-angled upward from the one side edge part of the parts 61A and 62A. Similarly, the pair of thin plate electrodes 61 and 62 are disposed in the accommodating portion so as to face each other with a predetermined gap.

Insulators 63 are attached to the four corners on the lower surface side of the bottom surface portions 61A and 62A, respectively, of the pair of thin plate electrodes 61 and 62. In addition, the insulator 63 slightly protrudes to the outside, so that the radio wave generator 6 is electrically insulated without contacting the member such as the inner wall of the housing portion on the bottom surface side or the side surface side. Secured.
As the insulating material of the insulator 63, a fluororesin such as polytetrafluoroethylene (for example, Teflon-registered trademark) can be used.

In addition, magnets 7 are attached to the side surfaces 61B and 62B of the thin plate electrodes 61 and 62, respectively, on the surfaces facing the inner wall of the housing portion.
The magnet 7 fixes the metal thin plate electrodes 61 and 62 to the inner wall of the metal housing by magnetic force.

  On the other hand, the magnet 7 is covered with an insulator such as polytetrafluoroethylene (for example, Teflon-registered trademark), so that the thin plate electrodes 61 and 62 and the inner wall of the housing portion are electrically connected. Insulated state. As a result, the thin plate electrodes 61 and 62 can be fixedly installed in the housing portion while ensuring the insulation between the thin plate electrodes 61 and 62 and the housing portion.

In the above flyer radio wave generator 2 according to the present embodiment, the direction in which the L-shaped thin plate electrodes 21 and 22 are attached can be arbitrarily changed. That is, in the radio wave generator 2, the thin plate electrodes 21 and 22 are arranged so that the bottom surface portions 21A and 221A face the bottom surface in the housing portion, and the side surface portions 21B and 22B face the side surface in the housing portion. , 22A and the side surface portions 21B, 22B can be disposed so as to face the side surface in the accommodating portion. Moreover, the thin plate electrodes 21 and 22 facing each other may be arranged at positions that are line-symmetric or point-symmetric with each other.
Further, the L-shaped thin plate electrodes 21 and 22 may be formed into a shape that is not bent into an L shape but is curved into a quadrant arc.
As described above, even when the L-shaped thin plate electrodes 21 and 22 are arranged in an arbitrary direction, or when the L-shaped thin plate electrodes 21 and 22 are configured to be curved in an arc shape, the insulation with each other and the insulation with the housing portion are ensured. By doing so, the operation as described above can be achieved.

Cooking by the radio wave generator 2 according to the above embodiment will be described. In the following, an example of cooking by the radio wave generator 2 will be described, but cooking is similarly performed by the radio wave generators 4, 5, and 6 according to other examples.
First, the radio wave generator 2 is installed in the oil tank 11 of the fryer 1. At this time, the thin plate electrodes 21 and 22 of the radio wave generator 2 are in a state of being electrically insulated from the oil tank 11 by the insulator 23 and the connecting tool 3 made of an insulating material.

Next, cooking oil is put into the oil tank 11, the radio wave generator 2 and the heating device 12 are activated, and the cooking oil is heated.
When the cooking oil reaches a temperature suitable for cooking, the ingredients are put into the oil tank 11.

In this state, a high-frequency current is passed from the oscillator to the thin plate electrode 21, thereby causing an oscillating current between the thin plate electrodes 21 and 22 to generate radio waves, and the ingredients in the oil tank 11 are irradiated with the radio waves.
Inside the food that has been irradiated with radio waves, vibrations of the oscillators that connect water molecules and miniaturization of the clusters occur, and as a result, cooking can be done in a short time, and the surface is fried quickly while confining moisture inside. And can be made delicious. At the same time, the oxidation / degradation of oil is more effectively suppressed.
Furthermore, since the thin plate electrode 22 is connected to the ground, there is no risk of electric shock and it can be used safely.

Below, the effect at the time of cooking a foodstuff with the fryer 1 using the electromagnetic wave generator 2 which concerns on this embodiment mentioned above was verified.
In this verification, the amount of polar compound (TMP), acid value (AV), peroxide value (PV), trans Fatty acid content and umami taste (glutamic acid content) were evaluated.

The acid value is calculated as follows.
Acid value = A x F x 5.611 / B
A: Titration volume of 0.1 mol / l ethanolic potassium hydroxide solution (ml)
F: Power value of 0.1 mol / l ethanolic potassium hydroxide solution B: Amount of sample collected (g)

The peroxide value is calculated as follows.
Peroxide value (meq / kg) = A x F x 10 / B
A: Titration of 0.01 mol / l sodium thiosulfate standard solution (ml)
F: Strength value of 0.01 mol / l sodium thiosulfate standard solution B: Amount of sample collected (g)

<Cooking method>
In the cooking method 1, squid cartilage fried (frozen, unheated) was cooked for 6 kg per day for 5 days in a state where the radio wave generator 2 was activated, and then fried 30 kg in total.
Further, as a comparative example for cooking method 1, in cooking method 2, squid cartilage fried (frozen, unheated) is similarly cooked for 6 days per day for 5 days without activating radio wave generator 2 (5). , Total 30kg fried.
Then, the oil after being fried every day was collected as a sample in a heat-resistant bottle, stored frozen, and used as an analysis sample.
In addition, 23 liters of edible oil was used, and the amount reduced in the cooking process was supplemented as needed.

<Amount of polar compound (TMP)>
FIG. 10 shows the temporal change of the TMP value in the cooking method 1 and the cooking method 2.
A: Cooking method 1
B1: Sampling from the inside of the pair of thin plate electrodes 21, 22 in the cooking method 2 B2: Sampling from the outside of the pair of thin plate electrodes 21, 22 in the cooking method 2.

Similarly, FIG. 11 shows the change with time of the TMP value in the cooking method 1 and the cooking method 2.
A: Cooking method 1
B ′: In cooking method 2, the average value on the inside and outside (inside the oil tank) of the pair of thin plate electrodes 21 and 22.

According to this result, it was found that the cooking time can be shortened from 6 minutes to 4.5 minutes and the increase in the TMP value can be suppressed according to the cooking method 2 as compared to the cooking method 1.
Also, there is a difference in the TMP value between the inside and outside of the pair of thin plate electrodes 21, 22, and it is possible to obtain a high effect by arranging and cooking the ingredients inside the pair of thin plate electrodes 21, 22. I understood.
Furthermore, when the number of days until the TMP value 17.5% that many subjects who eat the cooked food feel delicious is obtained is 3 days in the cooking method 1, in the cooking method 2, the pair of thin plate electrodes 21, In the case of 22 inside, it was estimated that it was 6.6 days, and the average value inside and outside the pair of thin plate electrodes 21 and 22 was estimated to be 5.3 days. Therefore, by using the radio wave generator 2 and cooking by arranging foods inside the pair of thin plate electrodes 21 and 22, the TMP can be eaten deliciously 2.2 times longer than when the radio wave generator 2 is not used. It was verified that fried cooking was possible at a value of 17.5% or less.

<Acid value (AV)>
FIG. 12 shows the acid value (AV) in cooking method 1 and cooking method 2,
A: Cooking method 1
B: Cooking method 2
It is.

  The AV value of the oil on day 0 of the test was 0.17, but the acid value of the oil on day 5 was 0.28 for cooking method 1 and 0.26 for cooking method 2. As a result, it was found that by using the radio wave generator 2, the acid value of the cooked oil can be reduced by 0.02 (AV), 7.1% compared to the cooking method 1.

<Peroxide value (PV)>
As shown in FIG. 13, the peroxide value was 1.08 for cooking method 2 and 1.21 for cooking method 1. Therefore, it was understood that by using the radio wave generator 2, the peroxide value of the cooked oil can be reduced by 0.13 (PV), 10.7% compared to the cooking method 1.

<Trans fatty acid content>
As shown in FIG. 14, the amount of trans fatty acid in the oil on the fifth day of the test increased by 0.17 g / 100 g in cooking method 1 and increased by 0.10 g / 100 g in cooking method 2 using radio wave generator 2. Therefore, it was understood that the use of the radio wave generator 2 can suppress the trans fatty acid in the cooked oil by 0.07 g / 100 g, which is 9.9% of the cooking method 1.

<Umami (content of glutamic acid)>
Umami was verified as the content of glutamic acid.
As a result of HPLC analysis, as shown in FIG. 15, when the area values of the peak of glutamic acid found around 6 minutes were compared, it was 159022 for cooking method 2 and 137741 for cooking method 1.
Therefore, it was found that the use of the radio wave generator 2 contained 1.2 times as much glutamic acid as the cooking method 1.

  As described above, it has been clarified that the use of the radio wave generator 2 can shorten the cooking time in the deep-fried cooking of the food so that it can be eaten longer and more deliciously.

In the above embodiment, the radio wave generator 2 is applied to the fryer 1A, the refrigerator 1B, or the container 1C, but the application is not particularly limited to these.
For example, if it is installed in a coffee maker and the radio wave generator 2 is installed as a receiver for a coffee server, it is also effective to maintain the taste of coffee by irradiating the coffee with radio waves. In addition, if the kitchen sink is secured and installed, it is easy to maintain the freshness of the ingredients and maintain the deliciousness by properly accommodating the ingredients in the radio wave generator 2. Can be done.

The present invention can also be applied to medical fields such as specimens, blood, organs, and medicines, and beauty and health fields such as cosmetics and health foods. Specifically, if it contains water, such as chemicals and lotions, it can irradiate the radio waves from the radio wave generator 2 to slightly vibrate the water, thereby obtaining the effect of maintaining or improving quality. Can do.
Furthermore, maintenance of freshness, thawing, storage, dripless thawing, prefabricated household and commercial use that can produce frozen dripless foods, stockpile warehouses, ships, trains, airplanes, fried food warmers, odenware, vegetables open It can also be applied to showcases, cake showcases, meat buns and dim sum showcases, gyoza-yaki, boiled noodles, hot storage, and airplane wagons.

DESCRIPTION OF SYMBOLS 1A Flyer 2 Radio wave generator 21, 22 Thin plate electrode 21A, 22A Bottom surface part 21B, 22B Side surface part 210, 220 Terminal 211, 221 Substrate 212, 222 Extension plate 23 Insulator 3 Connecting tool 4 Radio wave generator 41, 42 Thin plate electrode 41A , 42A Bottom surface portion 41B, 42B Side surface portion 411, 421 Substrate 412, 422 Extension plate 43 Insulator 5 Radio wave generator 51, 52 Thin plate electrode 51A, 52A Bottom surface portion 51B, 52B Side surface portion 51C, 51C Top surface portion 511, 521 Substrate 512 522 Extension plate 53 Insulator 6 Radio wave generator 61, 62 Thin plate electrode 61A, 62A Bottom surface portion 61B, 62B Side surface portion 611, 621 Substrate 612, 622 Extension plate 63 Insulator S Gap

Claims (8)

A device that radiates radio waves onto a target object that contains moisture while being contained in a predetermined accommodation unit,
A pair of L-shaped thin plate electrodes comprising a first thin plate electrode and a second thin plate electrode disposed with a gap therebetween;
An oscillator for supplying a high-frequency current to the first thin plate electrode,
Each of the pair of thin plate electrodes includes a bottom surface portion placed on the bottom surface side of the housing portion, and a side surface portion extending upward from one side edge portion of the bottom surface portion,
The pair of thin plate electrodes are disposed in the housing portion so that the bottom portions face each other and face each other, and are electrically insulated from the housing portion.
The side part is provided with an adjusting means capable of adjusting the height according to the depth of the accommodating part,
When a high-frequency current flows from the oscillator to the first thin plate electrode, an oscillation current is induced between the pair of thin plate electrodes to generate a radio wave, and the radio wave is placed between the pair of thin plate electrodes. Irradiated against objects,
A radio wave generator characterized by that. The thin plate electrode has a substantially U-shaped cross section, and further includes an upper surface portion extending in parallel with the bottom surface portion from one side edge portion of the side surface portion,
Each of the pair of thin plate electrodes is disposed in the housing portion so that the openings formed by the top surface portion, the side surface portion, and the bottom surface portion face each other and are electrically insulated from the housing portion. ,
The radio wave generator according to claim 1. The second thin plate electrode is connected to ground,
The radio wave generator according to claim 1 or 2. Each of the pair of thin plate electrodes is attached to the inner wall of the housing portion by the magnetic force of a magnet covered with an insulator,
The radio wave generator according to any one of claims 1 to 3. Measuring means for measuring a current value between the pair of thin plate electrodes;
A first adjusting means for adjusting the intensity of the high-frequency current based on the resistance value measured by the measuring means;
The radio wave generator according to any one of claims 1 to 4. Measuring means for measuring a current value between the pair of thin plate electrodes;
Second adjusting means for adjusting the length of the gap between the pair of thin plate electrodes;
Further having
The radio wave generator according to any one of claims 1 to 4. The pair of thin plate electrodes are provided with hexagonal through holes,
The radio wave generator according to any one of claims 1 to 6. The radio wave is a long wave,
The radio wave generator according to any one of claims 1 to 7.

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