JP2002034531A - Electric field processing method and electric field processing apparatus - Google Patents

Abstract

(57) [Summary] [Object] To provide various electric field treatment methods and electric field treatment devices. [Structure] The inside of the thawing chamber is moved up and down at regular intervals, and this temperature fluctuation is used to increase the thawing rate of the object to be treated, and a photocatalyst is used in the air circulation path to exert a sterilizing effect. And ventilate while sterilizing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric field processing method and an electric field processing apparatus for applying an electric field to a processed product such as food.

[0002]

2. Description of the Related Art It is known that an electric field exerts an effect on thawing, freezing, aging and keeping freshness of food.

[0003] The applicant has filed various applications for an electric field system, but has found new facts about freezing, thawing, aging, and maintaining freshness.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a method for moving a temperature in a refrigerator (chamber) up and down at a constant cycle and for thawing or freezing an object placed in the refrigerator with an electric field atmosphere in the refrigerator. An electric field processing method is provided.

Further, the present invention provides an electric field processing method characterized in that an object to be processed is placed in an electric field atmosphere, and a temperature difference is provided between a surface portion and a core portion of the object to be frozen. .

Further, the present invention provides an electric field processing method characterized in that the inside of a refrigerator is set to an electric field atmosphere and humidified air is circulated in a closed system to defrost an object to be processed.

[0007] In addition, the present invention, in the case of thawing, with an AC plus
Provided is an electric field treatment method characterized by alternately charging negatively and, when freshness is maintained, negatively or positively direct current.

The present invention also provides an electric field treatment method for cooking an object by adjusting the type of electrode plate and the voltage applied to the object.

Further, the present invention is installed in an electric field atmosphere,
Provided is an electric field treatment device as a fan having a photocatalyst layer formed thereon.

[0010] The present invention also provides an electric field processing device as a rice cooker, characterized in that an electric field is applied to an inner pot.

Further, the present invention provides a DC exchanger for exchanging AC to DC, a switching circuit for switching a plus / minus DC converted by the DC exchanger to generate a square wave, and a switching circuit for the same. And an electric field processing device as a voltage generator comprising at least one transformer for adjusting the voltage of the rectangular wave formed by the method described above and at least one rectifier circuit for rectifying the rectangular wave whose voltage has been adjusted by the transformer. .

The present invention also provides an air cleaning apparatus comprising a charging section for charging foreign substances such as dust and bacteria in the air, and an adsorption section for adsorbing the charged foreign substances, wherein the adsorption section has a photocatalyst attached thereto. As an electric field treatment device.

[0013]

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

In FIG. 1, a thawing apparatus M according to the present invention is shown.
Has a body frame 1, and a heat exchange section 2 is attached to a side surface of the body frame 1. A shelf box 3 is provided in the main body frame 1, and a plurality of shelves 4, 4... 4 are provided in the shelf box 3, Is placed.

An evaporator 5 is provided in the upper part of the main body frame 1.
A blower fan 6 is provided near the evaporator 5, and an air cleaning device 7 is provided in front of the fan 6. A blower fan 8 is provided on the opposite side of the fan 6, and the air in the cooling chamber 9 blown by the blower fan 8 passes through the evaporator 5 and is blown by the blower fan 6 through the air purifier 7 to the cooling chamber. It is blown out in 9. Part of the cooling air in the cooling chamber 9 passes through a flow opening 10 provided in the lower side of the main body frame 1 and passes through the heat exchange section 2.
Flows into.

The heat exchange section 10 has a hot water tank 11 at a lower portion thereof. A heater 12 is provided in the hot water tank 11, and the water in the hot water tank 11 is heated by the heater 12. Produces steam.
An evaporator 14 is attached above the hot water tank 11,
The humid air, which is a mixture of the water vapor and the cooling air passing through the circulation port 10, is cooled through the evaporator 14.
Above the evaporator 14, the punching plate 1 is divided into three stages.
5 is provided, and a spraying pipe 16 faces the upper side of the punching plate 15.
The hot water from the hot water tank 11 is supplied via 3 and sprayed. The humid air is heat-exchanged with the hot water to be sprayed by the three-stage punching plate, and simultaneously rises while absorbing the temperature, passes through the illuminator 17 which is also received above the spray pipe 16, passes through the main fan unit 18, and passes through the cooling chamber. Returned to 9 The refrigerator 1 is provided on the upper surface of the main body frame 1.
9 and 20 are mounted, the refrigerator 19 cooperates with the evaporator 14 of the heat exchange unit 2, and the cooler 20 cooperates with the cooling chamber 9.

As shown in FIG. 2, a photocatalyst is attached to the surface of the punching plate 15 having a large number of openings 15a of the heat exchange section 2, and this photocatalyst is formed by spraying, for example, titanium oxide particles and silver particles as electrodes. Is attached. The illuminator 17 has a plurality of bent plates 10a arranged between side plates 17b provided on both sides as shown in FIG. 3, and the evaporator 14 has a refrigerant pipe 14b and fins 14a as shown in FIG. Consists of The illuminator 17 and the evaporator 14 have, for example, a photocatalyst film formed by dipping in a photocatalytic paint. The photocatalytic coating is, for example, a mixture of titanium oxide particles, silver particles, and apatite particles in a binder.

A fan 30 as shown in FIG. 5 is provided in the main fan unit 18.
A photocatalytic film is formed on the surface of the blade 30a. When the fan 30 is made of metal, a sprayed photocatalytic film is preferable. When the fan 30 is made of plastic, it is preferable to apply a photocatalytic paint by spraying. The blower fan 6 in the cooling chamber 9
A photocatalytic film is also formed on the surface of the suction fan 8.

A high voltage generator 31 is connected to the punching plate 15, the illuminator 17, and the evaporator 14, and the inside of the heat exchange section 2 becomes an electric field atmosphere. Air can be produced and the photocatalytic film is excited, so that a bactericidal effect can be exerted without light.

If a photocatalyst is formed in the fan, the amount of air that comes into contact with air during rotation increases, and the sterilizing effect can be increased.

A high voltage generator 32 is connected to the shelf box 3 in the main body frame 1 and the inner wall of the frame, and the inside of the main body frame 1 becomes an electric field atmosphere, thereby increasing the heat transfer efficiency and the thawing time of the object F to be processed. And thawing is possible even in a minus temperature atmosphere.

As shown in FIG. 6, the air cleaning device 7 comprises a cylinder 41 provided on a substrate 40 at a predetermined interval.
A photocatalytic film is formed in the cylindrical body 41. The substrate 40 is connected to the high voltage generator 32 and the electric field atmosphere in the cylinder 41 excites the photocatalytic film and makes the humid air droplets passing therethrough fine, thereby significantly reducing the amount of frost in the cooling chamber 9. Let it. If a negative DC voltage is supplied to the substrate 40, dust or bacteria in the air passing through the cylindrical body 41 is attracted to the inner wall thereof, and the photocatalytic sterilizing effect is increased.

As shown in FIGS. 7 and 8, a voltage may be induced in the cylinder 41 via an application plate 42 having a large number of openings 42a which are loosely fitted in the cylinder 41.

The electric field applied to the object F in the shelf 3 in the cooling chamber 9 is desirably an alternating rectangular wave to give fluctuations to the molecules of the object during thawing. In this case, it is preferable to apply a negative or positive DC voltage intermittently (pulse-like) as shown in FIGS. When the applied voltage is a direct current, the surface of the object to be processed loses power and the residual effect is large. Therefore, the applied voltage is sufficiently pulse-like. As described above, when the surface of the object is charged by the DC voltage, the atmospheric temperature is hardly transmitted to the object, and the object is not frozen even when the ambient temperature is set to a minus temperature.

In order to quickly defrost the object F, it is important to oscillate the temperature in the cooling chamber 9 up and down as shown in FIG. 12 while circulating the humidified air in a closed system. That is, by controlling the temperature in the cooling chamber 9 by controlling the capacity of the evaporator 5, for example, as shown by a curve G1, a fluctuation is given at intervals of 6 minutes within a range of ± 2.5 ° C. at a set temperature of 0 ° C. Then, the object to be processed at -30 ° C or lower is quickly thawed by approaching the set ambient temperature of 0 ° C in a short time as shown by the curve G2. As described above, an AC voltage is preferable at the time of thawing, and a DC is preferable at the time of maintaining freshness. Therefore, as shown in FIG. 13, a DC generator 32a, an AC generator 32b, and these changeover switches 32c are connected to the voltage generator 32. The switching between these two generating units 32a and 32b is performed by, for example, a timer 3
2d. Instead of the timer 32d, a temperature sensor that measures the temperature of the object may be used to switch from AC to DC when the temperature reaches a predetermined temperature.

When thawing tuna or the like is caused, the phenomenon of oxygen deficiency causing a core black phenomenon is caused. However, as shown in FIG. 14, the operation of the evaporators 5 and 14 is stopped by the controller 50. Even at this time (the temperature fluctuation of the curve G1 in FIG. 12 is controlled by turning on and off the evaporators 5 and 14), it is preferable to rotate the fans 6 and 8 in the cooling chamber 9. In this manner, in the case of a tuna or the like in which oxygen is constantly supplied to the object to be treated, core black is effectively prevented.

When an object F is placed on an electrode 62 having a large number of cylinders 61 mounted on a substrate 60 as shown in FIG. 15, the temperature change near the cylinder 6 becomes as shown in FIG. ,
The temperature increases in synchronism with the temperature change G1 in the refrigerator and becomes as shown by a curve G4 (the lines of electric force strongly act on the inside of the cylinder and the outer peripheral surface thereof). Further, when the voltage applied to the electrode 62 is changed by the controller in synchronization with the curve G1 in FIG. 12, the surface temperature of the processing object rises while fluctuating like G3.
As described above, if the temperature of the object is moved up and down, the thawing time becomes faster.

A honeycomb body 65 is prepared in place of the air cleaning device 7 (FIG. 1) and the electrode 62 (FIG. 15) (FIG. 17), and a photocatalytic paint is dipped or sprayed on the entire honeycomb body 65. Alternatively, it may be applied by thermal spraying from front and rear. This honeycomb body (a photocatalyst is not always necessary in the setting in the refrigerator) may be set horizontally in the refrigerator, and the object to be processed may be set thereon. Of course, the high voltage generator 32 is connected to this honeycomb body. Instead of this honeycomb body, a large number of hollow cylindrical bodies 66 may be joined by thermal spraying (FIG. 18).

FIG. 19 shows a quick freezer 70, in which a shelf 71 for placing an object to be processed is provided, and this shelf 71 is connected to a voltage generator 74. Further, a large-sized evaporator 72 is provided in the refrigerator, and the evaporator 72 is connected to a condenser 73 installed outdoors.

In the partition between the shelf 71 and the evaporator 72,
A large number of fans 77, 77... 77 are provided, and the air sucked by the fans 77 is blown out from both sides that do not pass through the evaporator 72. An ultrasonic humidifier 75 is provided on the top surface of the quick freezer 70, and humidified steam from the humidifier 75 is sent to the inside of the refrigerator via a pipe 78, thereby drying the object to be processed in the refrigerator. I'm preventing.
A water tank is provided in the humidifier 75, and the water tank is treated with a photocatalyst to sterilize the water. In addition, when the water in the water tank is treated with an electric field, the clusters of water become smaller, and the mist generated from the humidifier 75 becomes smaller. That is, the water tank in the humidifier 75 is connected to the voltage generator 74, and the water in the water tank is placed in an electric field atmosphere.

In the freezer 70, the shelf 71 acts as an electrode, so that the air inside the refrigerator is charged, and the air inside the refrigerator circulates. And frost is effectively prevented. Also,
When the photocatalyst is attached to the evaporator 72, the fan 77 and the inner wall of the storage in various forms, the main component of the photocatalyst is TiO ₂ (titanium oxide) particles, which act as a bactericidal action and emit far-infrared rays at the same time. Is effectively suppressed.

Next, the behavior of the surface temperature and the center temperature of the object F when the object F such as fish and meat was frozen in an electric field atmosphere was measured. That is, as shown in FIG. 20, an electrode plate 82 was set in a freezer 80, a voltage generator 81 was connected to the electrode plate 82, and an object F was placed on the electrode plate 82.

The voltage applied to the object F is 2 to
3 KV, and the current value was 1 mA or less. In this experiment, pork was used as the treatment object F.

The fluctuation state of the surface temperature of the object F is shown by a graph g ₁ when there is an electric field, and by g ₂ when there is no electric field. Variation state of the core temperature when the there electric field is shown in the graph g _4, when no electric field is shown in the graph g _3. The surface temperature is almost the same until the start of freezing with and without an electric field.
In the absence of an electric field, the temperature of the whole object F becomes equal at approximately −3 ° C. where the core temperature (graph g ₁ ) and the surface temperature (graph g ₃ ) merge. (-3 ° C) is maintained. Then, after the whole is frozen, it descends with the surface and the core temperature being equal.

On the other hand, in a state where the electric field is present, the core temperature and the surface temperature fall in a state where the difference between them is equal. Also, the whole freezes at a lower temperature of 2-3 ° C. Immediately before completion of the entire freezing, the temperature temporarily rises (curve P2), and then drops with a difference in the surface temperature.

That is, in the electric field atmosphere, the surface temperature (graph g ₁ ) and the core temperature (graph g ₄ ) throughout the freezing process.
Although there is a certain difference between the two, there is a difference between the surface temperature (graph g ₂ ) and the core temperature (graph g3) up to the freezing point in the absence of an electric field, but when the freezing point is reached, the two agree. The whole freezes and then descends in a uniform state.

On the other hand, in the electric field, the surface temperature (graph g ₁ ) and the core temperature (graph g ₄ ) always fluctuate while having a certain difference. Occurs, and the whole freezes while suppressing the development of the crystal. Immediately before the whole freezes, the whole rises once in the curve P2 portion, and after it has adjusted the crystal structure, it falls. Due to the existence of such curves P1 and P2, the destruction of cells during freezing is significantly reduced.

As described above, the electric field atmosphere is characterized by the behavior of heat transfer to the processing object F. For example, as shown in FIG. 22, the electric field atmosphere is installed in the casing 102 and the lid 106 of the electric kettle 100. A voltage generator 103 is connected to the inner pot 101, and a temperature change during rice cooking is detected by a sensor 105 and a display unit 104.
As a result, the result as shown in FIG. 23 was obtained.

The inner pot 101 has a cylindrical shape with a bottom, and the lines of electric force are directed from the periphery to the center. In particular, the action of the electric field at the center becomes stronger. Due to the action of the electric field, the flow of water in the inner pot is lowered from around the inner pot and rises at the center as shown in FIG. 22, and the rice cooked at the center of the pot is lifted. State. Temperature of the bobbin case center, in the case of there field, drawing a smooth curve as the graph g _10, reaches a boiling point of 100 ° C. in about 20 minutes after turning on the power. In contrast, as shown in the graph g ₁₁ in case of no electric field, elevated in unstable state, it took considerably time to reach 100 ° C. to the boiling point. Thus, in an electric field atmosphere, temperature control becomes easy, and rice can be cooked deliciously.

Next, the electrode of the fryer that fries with oil will be described.

FIG. 24 shows A having a surface of soft iron plated with zinc.
FIG. 1 shows a type electrode 110, which comprises a main body 111 having an oil circulation port 113 and a connecting rod 112 attached to a corner of the main body 111. When the electrothermal characteristics of the A type 110 were measured with an American dog, the results were as shown in FIG. 27, and it was found that the temperature rise characteristics between the surface temperature and the core temperature were different. That is, the temperature of the set oil was set to 170 ° C., the A-type electrode 110 was set in the oil tank of the fryer, and no electric field (0 V), −200 V,
-400V, -600V, -800V, -1000V,
When -2000 V was applied and the core temperature and surface temperature were measured, the surface temperatures were almost the same at -1000 V and -2000 V, and the rise rate was the fastest, but -800 V and -600 V
In Table 1, -600 V had better rising characteristics. The core temperature is -200V, -400 from 0V (no electric field).
V and -800 V have poor characteristics, and -600 V and -10
00V and -2000V were slightly better. This indicates that when the surface of the fried food is charged, the transfer of heat is blocked depending on the voltage applied to the charged layer, and the rise in core temperature is suppressed. -600V for A type electrode
However, it can be seen that both the surface and core temperature increase characteristics are good. For example, when the voltage is set to -400 V, the surface is deeply fried, but the center is juicy and fried food with sufficient moisture can be cooked. In the case of negative voltage, similar temperature characteristics were obtained 3 minutes after the electric field was turned off. From this, it was found that when a constant negative or positive voltage was applied to oil, the residual effect remained for a certain period of time. did. Therefore, even if a constant negative or positive voltage is applied intermittently, the effect can be expected sufficiently.

FIG. 25 shows an aluminum electrode 120 (B type electrode).
21 and a large number of openings 122 formed in the main body 121.
And a connecting rod 112. The temperature rise characteristics of the B type electrode 120 in the American dog were measured without an electric field (0 V) and at 150 V, 450 V and 800 V AC. According to this, AC 150V, 450
V characteristics are almost the same, both the surface and the core are AC800V and AC
At 150 V, there was almost no difference in the effect. That is, B
In the case of the type electrode, it was found that a voltage of about 150 V AC is preferable from the viewpoint of the risk of electric shock and the effect.

C formed by spraying a far-infrared film on an iron plate
FIG. 29 shows the temperature characteristics of the type electrode (the shape is the same as the B type electrode). According to this, the surface properties of AC300V are worse than without an electric field, which seems to be due to the interference between the far infrared rays and the electric field.

The enamel was attached to the iron plate, and the temperature rise characteristics of the D-type electrode having the same shape as the b-type electrode are shown in FIG.
Shown in According to this, since the enamel also radiates far-infrared rays, AC150V has a lower surface temperature characteristic than that without an electric field.
Better, and no electric field was the worst.

FIG. 26 shows an E-type electrode 130 which is a cylindrical electrode in which a large number of stainless steel cylindrical bodies 132 are set in a frame 131, and the temperature characteristics thereof are shown in FIG. According to this, it was found that the electric field of the cylindrical body 132 did not exert a large effect on the core temperature, but there was a remarkable difference in the surface temperature, and AC150V exerted a better effect than AC300V.

As described above, it is possible to obtain the optimum temperature rise characteristics for the fried food by changing the material of the electrode, the type of the surface treatment, and the applied voltage.

Next, the specific structure of the voltage generator will be described. The voltage applied to each electrode is appropriately selected in the field where DC and AC are applied. In the case of AC, a rectangular wave AC is desirable. This rectangular wave alternating current is obtained, for example, by a voltage generator having a configuration as shown in FIG.

That is, the AC from the AC power supply 141 is exchanged by the DC exchanger 142 into positive and negative DC, and these DCs are
The N, OFF operation is performed to generate a rectangular waveform of a predetermined frequency, the plus element is voltage-adjusted by the transformer 144, and the minus element is voltage-adjusted by the transformer 149, and the voltage-adjusted pulse is composed of a diode and a capacitor. Waveforms 150 and 151 are respectively formed by the rectification circuits 147 and 148, and these are combined to form an AC rectangular wave 152.

When an electric field and a photocatalyst are combined, since both are electromagnetic waves, the photocatalyst is excited by the electric field to increase the effect of the photocatalyst, and the photocatalyst operates even in the absence of light. As an example, a ventilation fan 160 as shown in FIGS. That is, the ventilation fan 160 has a frame 161 made of plastic or metal, and an insulation frame 162 made of an insulator is attached to the front surface of the frame 161. The insulation frame 163 has discharge bars 163, 1.
63.. 163 are provided, and discharge needles 164, 164.

The discharge bars 163 are electrically connected to each other, one of which is connected to the high voltage generator 165, and the discharge needle 164 of the discharge bar 163 generates a corona discharge. A negative voltage of about -7 to -10 KV is applied to the discharge bar 163, whereby a corona discharge is generated from the tip of the discharge needle 164, and all dust and bacteria passing therethrough are negatively charged, as shown in FIG. Duct 17 as
1 is adsorbed into the honeycomb cylindrical body of the adsorbent that is grounded to the wall 170 that forms the first wall. If the adsorbent is formed of a metal and a positive DC voltage is applied thereto, the adsorption effect is further increased. In addition, if the photocatalyst layer 195 is formed by welding or painting in the adsorbent formed of the honeycomb cylinder as shown in FIG. 36, the bacteria adsorbed on the honeycomb adsorbent will be killed in a short time. The photocatalyst includes TiO ₂ particles as a semiconductor and A as an electrode.
It is desirable that the g particles and the hydroxyapatite particles as the adsorbent are adhered by welding. Note that a damper 167 that forms an opening and closing port is formed on the front side of the frame 161 that holds the honeycomb adsorbent. The discharge needles 164 do not necessarily need to be provided corresponding to one body 1 at the cylindrical port of the honeycomb, but may be installed in a state where the discharge needles 164 are inserted into the respective cylindrical ports of the honeycomb. Although a small amount of ozone is generated by the corona discharge, this ozone is decomposed by the photocatalyst and does not adversely affect food or humans. Further, it is also possible to use a lattice-shaped adsorbent 200 as shown in FIG. 37 instead of the honeycomb adsorbent.

FIG. 33 shows a ventilation fan 190 used for ordinary households.
A fan 193 is provided in the main body frame 191, and a metal conductive layer 192 is provided on an opening peripheral wall provided with the fan 193, and a voltage generator 194 is connected to the conductive layer 192. I have. The fan 193
A photocatalyst is attached to the fan 193 in an electric field atmosphere.
The air is sterilized by the rotation of.

[0052]

The present invention is configured as described above.
In the thawing chamber, the heat transfer efficiency is increased, and the activity of the photocatalyst is increased to increase the sterilizing effect. In the fryer, the oil rising rate is increased, and in the ventilation fan, the sterilizing ability can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a defroster according to the present invention.

FIG. 2 is a perspective view of a punching plate.

FIG. 3 is a front view of the illuminator.

FIG. 4 is a configuration diagram of an evaporator.

FIG. 5 is a side view of the fan.

FIG. 6 is a partial perspective view of the air cleaning device.

FIG. 7 is a partial perspective view showing another embodiment of the air cleaning device.

8 is a cross-sectional view of the air cleaning device of FIG.

FIG. 9 is a rectangular wave diagram generated by the voltage generator.

FIG. 10 is a minus square wave diagram generated by the voltage generator.

FIG. 11 is a plus square wave diagram generated by the voltage generator.

FIG. 12 is a graph showing a temperature control and a thawing state of a thawing chamber.

FIG. 13 is a control diagram of the voltage generator.

FIG. 14 is a control diagram of a fan and an evaporator.

FIG. 15 is a front view when an object to be processed is placed on a cylindrical electrode.

FIG. 16 is an explanatory diagram showing a temperature change around a cylindrical electrode.

FIG. 17 is a perspective view showing another embodiment of the cylindrical electrode.

FIG. 18 is a perspective view showing still another embodiment of the cylindrical electrode.

FIG. 19 is a schematic configuration diagram of a quick freezer.

FIG. 20 is a schematic configuration diagram of an electric field freezer.

FIG. 21 is a graph showing a frozen state.

FIG. 22 is a schematic configuration diagram of an electric kettle.

FIG. 23 is a graph showing a temperature rise state with and without an electric field of the electric kettle.

FIG. 24 is a perspective view of an A-type flyer electrode.

FIG. 25 is a perspective view of a B-type flyer electrode.

FIG. 26 is a perspective view of an E-type flyer electrode.

FIG. 27 is a graph showing a temperature rise characteristic of an A-type flyer electrode.

FIG. 28 is a graph showing a temperature rise characteristic of a B-type flyer electrode.

FIG. 29 is a graph showing a temperature rise characteristic of a C-type flyer electrode.

FIG. 30 is a graph showing a temperature rise characteristic of a D-type flyer electrode.

FIG. 31 is a graph showing a temperature rise characteristic of an E-type flyer electrode.

FIG. 32 is a schematic configuration diagram of a voltage generator that generates a rectangular wave.

FIG. 33 is a perspective view of a ventilation fan combining an electric field and a photocatalyst.

FIG. 34 is a cross-sectional view of the ventilation fan of FIG. 33.

FIG. 35 is a perspective view showing another embodiment of the ventilation fan.

36 is an enlarged view of a suction unit used in the ventilation fan of FIG.

FIG. 37 is a perspective view showing another embodiment of the suction unit of the ventilation fan.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Body frame of thawing apparatus 7 ... Air washing apparatus 10 ... Heat exchange part 15 ... Punching plate 30 ... Fan 61 ... Cylindrical body 70 ... Feeding freezer 100 ... Electric kettle 110 ... A type electrode 120 ... B type electrode 130 ... E type Electrode 143 switching circuit 160 ventilation fan 162 insulating frame 163 discharge bar

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) A61L 9/16 A61L 9/16 D 4D059 / 22 9/22 B03C 3/02 B03C 3/02 B 3 / 60 3/60 F25D 23/12 F25D 23/12 Q // A47J 37/12 321 A47J 37/12 321 F term (reference) 4B021 LP02 LP10 LT01 4B022 LB01 LF01 LF02 LF03 LF16 4B055 AA03 BA22 CA09 EA10 4B015 AB02 AE04 AE04AE BA18 BA20 BG09 BG10 4C080 AA05 AA07 AA09 BB05 HH05 KK08 MM02 MM07 NN02 QQ11 4D054 AA13 BB06 BC06 BC25 CA18 CA19 CB01 EA11 EA24 EA30

Claims (14)

[Claims] 1. An electric field processing method comprising: moving a temperature in a refrigerator (room) up and down at a constant cycle; and making the interior of the refrigerator an electric field atmosphere to thaw or freeze an object to be processed placed in the refrigerator. 2. The electric field processing method according to claim 1, wherein even when the compressor of the temperature control system is stopped, the fan is constantly rotated without stopping. 3. An electric field treatment method comprising: placing an object in an electric field atmosphere; freezing the object with a temperature difference between a surface portion and a core portion of the object. 4. The electric field processing method according to claim 3, wherein after the object is frozen, the temperature is further lowered by providing a temperature difference between the surface temperature of the object and the core portion. . 5. The electric field treatment method according to claim 3, wherein the surface portion of the object to be processed is once lowered before freezing to reach a freezing point, and then raised once before freezing is completed. 6. A method for treating an electric field, wherein the inside of the chamber is set to an electric field atmosphere, and humidified air is circulated in a closed system to defrost the object to be treated. 7. An electrostatic field processing method, wherein the surface of an object to be processed in a refrigerator is negatively charged, and the atmosphere in the refrigerator is maintained in a minus temperature range to maintain the freshness of the object to be processed. 8. An electric field treatment method characterized by alternately charging positive and negative with alternating current during thawing and charging negative or positive with direct current when maintaining freshness. 9. An electric field treatment method for cooking an object to be processed by adjusting a type of an electrode plate and a voltage applied to the object to be processed. 10. An electric field processing device as a fan which is installed in an electric field atmosphere and has a photocatalyst layer formed thereon. 11. A substrate comprising: a substrate; a hollow cylinder fixed to the substrate; and an application plate having an opening so as to be fitted over the hollow cylinder with a gap therebetween and applying a voltage, An electric field treatment device wherein a fluid passes through a hollow body. 12. An electric field processing device as a rice cooker, wherein an electric field is applied to an inner pot. 13. A switching device comprising: a DC exchanger for converting AC to DC; a switching circuit for switching a plus or minus DC converted by the DC exchanger to generate a square wave; An electric field processing device as a voltage generator, comprising: at least one transformer for adjusting the voltage of the rectangular wave, and at least one rectifier circuit for rectifying the rectangular wave whose voltage has been adjusted by the transformer. 14. An electric field treatment device as an air cleaning device, comprising: a charging section for charging foreign matters such as dust and bacteria in the air; and an adsorption section for adsorbing the charged foreign substances. apparatus.