WO2021060568A2

WO2021060568A2 - Electric field treatment device

Info

Publication number: WO2021060568A2
Application number: PCT/JP2020/037700
Authority: WO
Inventors: 年政坂本; Takehiko ABE (阿部武比古)
Original assignee: 年政坂本
Priority date: 2019-09-27
Filing date: 2020-10-05
Publication date: 2021-04-01
Also published as: WO2021060568A3; JP2021052919A; TW202126241A; WO2021060568A9

Abstract

In this invention, a shielding container composed of a metal, an insulation-covered metal or an insulator is disposed on the interior of an inner container to which a high voltage from an electric field treatment fryer is applied. In cases when the shielding container is composed of a metal, the shielding container or a shielding case is in electrical contact with a grounded outer container. A shielding case composed of a metal, an insulation-covered metal or an insulator is disposed on the interior of the inner container to which a high voltage from an electric field treatment refrigerator is applied. In cases when the shielding case is composed of a metal, the shielding case is in electrical contact with the grounded outer container or a grounded outer case. As a result of this configuration, it is possible to avoid accidents in which an operator touches the inner container or the inner case to which a high voltage is being applied and receives an electric shock, and it is possible to entirely avoid electric shocks because the shielding container or the shielding case is in electric contact with the grounded outer container or the grounded outer case.

Description

Electric field processing equipment

The present invention relates to an electric field treatment fryer that performs effective oil and fat heat treatment on foodstuffs by applying an electric field to the foodstuffs and the like, and an electric field treatment device that refrigerates and stores the foodstuffs and the like.

In addition to the usual refrigerators used in restaurants and the like, the electric field processing refrigerating device according to the invention of the present application is also described as a transportation device, a storage of organs for transplantation, a body storage, and a defrosting device.

Furthermore, the electric field treatment refrigerating device according to the invention of the present application can be applied not only to a device having no life reaction such as a body, but also to a treatment device having a life reaction such as organs for transplantation, plant cultivation, and preservation of fresh flowers.

First, when heat-processing food with edible oils and fats, an electric field treatment fryer of the prior art that applies an electric field by commercial alternating current of more than 6000 V to a heating medium such as edible oils and fats to perform electric field heat processing of foods is shown in the figure. It will be described by 1.

It is believed that the electric field treatment fryer modifies the fat and oil that is the heating medium by the electric field of high voltage alternating voltage, and the food to be treated is electric field heat processed by the reformed fat and oil.

1A and 1B are structural conceptual views of the electric field processing fryer of Japanese Patent No. 5386346, FIG. 1A is a front sectional view, and FIG. 1B is a top sectional view.
In this figure, the electric field treatment fryer has an oil-impermeable conductive outer container 1 and an oil-permeable conductive inner container 2, and a high-voltage power supply device is provided between the outer container 1 and the inner container 2. A high voltage is applied from 7. At this time, the outer container 1 is grounded for safety.

The outer container 1 has a bottomed rectangular parallelepiped shape made of a metal plate such as stainless steel whose upper portion is open, and accommodates a heating medium such as edible oil and fat.
The inner container 2 has a bottomed rectangular parallelepiped shape with an open upper portion, is made of stainless wire mesh or stainless punching metal, and is housed in the outer container 1 in a nested manner.
A heat-resistant insulating spacer 3 made of PTFE plastics, ceramics, or the like is attached between the inner container 2 and the outer container 1 to insulate the outer container 1 and the inner container 2 and regulate the distance between them.

An outer lid 4 and an inner lid 5 corresponding to the outer container 1 and the inner container 2 are provided, respectively, and a heat-resistant insulating spacer 3 made of PTFE plastics, ceramics, or the like is interposed between the outer lid 4 and the inner lid 5. ing.
The outer lid 4 is made of a conductive stainless steel plate or the like like the outer container 1, and the inner lid 5 is made of a conductive stainless wire mesh or stainless punching metal like the inner container 2.
The outer lid 4 and the inner lid 5 are closed during the electric field treatment heat processing, at which time the outer lid 4 is electrically connected to the outer container 1 and the inner lid 5 is electrically connected to the inner container 2.

A high voltage is applied between the outer container 1 and the inner container 2 from the high voltage power supply device 6. The high-voltage power supply device 6 includes a 6800V commercial AC high-voltage power supply device boosted from a commercial AC power supply by a transformer, a DC high-voltage power supply device described in JP-A-2019-76191, and a high-frequency medium pressure described in JP-A-2019-80662. A power supply is used.

A sheathed heater 7 is arranged as a heat source on the outside of the bottom of the conductive outer container 1.
The sheathed heater 7 may be arranged not only on the outside of the bottom of the outer container 1, but also on the outside of the side of the outer container 1, the inside of the bottom of the outer container 1, and the inside of the side of the outer container 1.
As the heat source, in addition to the sheathed heater, a high frequency induction (IH) heater shown in Japanese Patent Application Laid-Open No. 2017-113250 can be used, and a combustion heating device can also be used.

Next, with reference to FIG. 2, a conventional technique will be described for an electric field processing refrigerator that applies a high voltage electric field when storing food or the like in a refrigerator.

There is an electric field treatment refrigerator that applies an electric field generated by commercial alternating current of 6800V when refrigerating foods, etc. to perform electric field treatment refrigeration of foods, etc.

The freezing point (freezing point) of water drops to about -8 ° C in a refrigerator to which an electric field with a high commercial AC voltage is applied. Utilizing this phenomenon, foods and the like are stored at a low temperature of 0 ° C. or lower without freezing.

Foods and the like stored at a low temperature of 0 ° C. or lower without freezing can not only suppress bacterial growth, but also avoid undesired alteration due to tissue destruction of foods due to freezing and thawing.

2A and 2B are structural conceptual views of the electric field processing refrigerator of Japanese Patent No. 593235, FIG. 2A is a top sectional view, and FIG. 2B is a front sectional view.
This electric field processing refrigerator has an outer case 11 and an inner case 12, and a high voltage of 6800 V, which is an alternating current or a direct current, is applied between the outer case 11 and the inner case 12 from the high voltage power supply device 16. At this time, the outer case 11 is grounded for safety.

In this figure, the outer case 11 is made of a metal plate such as stainless steel, which has a rectangular parallelepiped shape and an open front surface.

Reference numeral 12 denotes an inner case made of metal such as stainless steel, which has a rectangular parallelepiped shape and an open front. It is composed of a stainless wire mesh or a stainless perforated plate to ensure breathability, and is nested in an outer case 11.

The inner case 12 is housed inside the outer case 11 at intervals via an insulating spacer 13, and the outer case 11 and the inner case 12 are electrically separated by the insulating spacer 13.
Insulating spacers 13 are attached to the upper and lower four corners of the inner case 12 to regulate the distance from the outer case.

An outer door 14 and an inner door 15 corresponding to the outer case 11 and the inner case 12, respectively, are provided.
The outer door 14 is made of a stainless steel plate or the like like the outer case 11, and the inner door 15 is made of a stainless wire mesh or a stainless perforated plate to ensure air permeability like the inner case 12.
The outer door 14 is electrically connected to the outer case 11 and the inner door 15 is electrically connected to the inner case 12, and the outer door 14 and the inner door 15 are configured to be spaced apart from each other via an insulating spacer 13.

A commercial AC high voltage or DC high voltage of 6800 V is supplied from the high voltage power supply device 16 between the outer case 11 and the inner case 12.
The outer door 14 and the inner door 15 are closed during use, and the outer door 14 is electrically connected to the outer case 11 and the inner door 15 is electrically connected to the inner case 12.

In the conventional electric field processing fryer shown in FIG. 1 and the conventional electric field processing refrigerator shown in FIG. 2, the conductive outer container or outer case is grounded, and the conductive inner container or inner case is equipped with a 6800 V commercial AC high-voltage power supply. A high voltage is applied by the device, the 6000 V DC high voltage power supply device described in JP-A-2019-76191, or the DC high-voltage power supply device obtained by combining the differential circuit and the booster circuit described in JP-A-2019-80622. ..

A cooling device for refrigeration is arranged inside the outer case 11 and above the outer side of the inner case 12. There is no particular meaning in arranging the cooling device on the outer upper part of the inner case 12, and it can be arranged at an appropriate position convenient for mounting.

Japanese Patent No. 5386346 Japanese Patent No. 5593235 JP-A-2017-113250 JP-A-2019-76191 JP-A-2019-80662 JP-A-2019-86194 JP-A-2019-86193

Since the conventional electric field treatment fryer shown in FIG. 1 has a conductive outer container exposed to the outside grounded, a high voltage for electric field treatment, a commercial alternating current of 6800 V, or Japanese Patent Application Laid-Open No. A direct current of 6000 V described in Japanese Patent Application Laid-Open No. 2019-76191 or a high DC voltage obtained by a combination of a differential circuit and a booster circuit described in Japanese Patent Application Laid-Open No. 2019-80622 is applied.

Such a high applied voltage may cause an electric shock accident, and it is necessary to keep the lid closed during the electric field processing. Therefore, not only is it troublesome to open and close the lid when loading and unloading the foodstuffs to be processed, but also the state of the foodstuffs being processed is monitored and the processed foodstuffs are taken out, or foodstuffs are added during the processing. I can't throw it in.

In the conventional electric field treatment refrigerator shown in FIG. 2, the conductive outer case exposed to the outside is grounded, and the conductive inner case is provided with a high voltage for electric field treatment, 6800 V commercial AC, or JP-A-2019-76191. A direct current of 6000 V is applied by the multi-stage rectifying circuit described in Japanese Patent Application Laid-Open No., or a high DC voltage is applied by a combination of a differential circuit and a booster circuit described in JP-A-2019-80622.

Such a high applied voltage may cause an electric shock accident, and it is necessary to keep the door closed during the electric field processing. In addition, it is troublesome to shut off the applied power supply device when storing and taking out food and the like.

The problem to be solved by the invention of this application is an electric field processing fryer that does not require a lid and can monitor the state of foodstuffs being processed and add foodstuffs during processing without fear of electric shock. By obtaining an electric field processing refrigerator that can monitor the state of stored food without having to cut off the applied voltage to prevent electric shock when storing and taking out food. is there.

In order to solve the above problems, in the invention of this application, a high voltage is supplied to the inner container of the electric field processing fryer or the inner case of the electric field processing refrigerator, and the inner container or the electric field treatment of the electric field processing fryer to which the high voltage is supplied is supplied. Shield the inner container to which the high voltage of the electric field treatment fryer is supplied or the inner case to which the high voltage of the electric field treatment refrigerator is supplied so that the worker does not touch the inner case of the electric field treatment refrigerator.

In principle, a mechanical configuration is sufficient for shielding, and a conductive or non-conductive net or porous plate is placed as a shielding body in an electric field treatment fryer or an electric field treatment refrigerator.

When a conductive material is used as the shield, the shield should be grounded for further completeness.

According to the above-mentioned solution, since the inner container of the electric field processing fryer or the inner case of the electric field processing refrigerator to which the high voltage is applied is confined by the shielding case of the electric field processing fryer or the electric field processing refrigerator, the operator has a high voltage. Since there is no possibility of accidentally touching the inner container of the electric field treatment fryer or the inner case of the electric field treatment refrigerator to which the electric field treatment fryer is supplied, no electric field accident occurs. Further, by electrically contacting the shielding container of the electric field processing fryer with the outer container and the shielding case of the electric field processing refrigerator with the outer case, the shielding container is passed through the outer container and the shielding case is passed through the outer case. Since it is grounded, electric field accidents are completely avoided.

Front sectional view and top sectional view of the electric field processing fryer of the prior art. Top sectional view, front sectional view and partially enlarged view of the electric field processing refrigerator of the prior art. The explanatory view of the electric field processing flyer of Example 1 of this invention. The explanatory view of the electric field processing flyer of Example 2 of this invention. The explanatory view of the electric field processing flyer of Example 3 of this invention. The explanatory view of the electric field processing flyer of Example 4 of this invention. The explanatory view of the electric field processing flyer of Example 5 of this invention. The explanatory view of the electric field processing flyer of Example 6 of this invention. Top sectional view and partially enlarged view of the electric field processing refrigerator of Example 7 of the present invention. Top sectional view and partially enlarged view of the electric field processing refrigerator of Example 8 of the present invention. Top sectional view and partially enlarged view of the electric field processing refrigerator of Example 9 of the present invention. Top sectional view and partially enlarged view of the electric field processing refrigerator of Example 10 of the present invention. Top sectional view and partially enlarged view of the electric field processing refrigerator of Example 11 of the present invention. Explanatory drawing of the high voltage power supply apparatus used in this invention.

Hereinafter, examples of the invention according to this application will be described.

The electric field processing fryer of Example 1 to which the invention according to the present application is applied will be described with reference to FIG.
In this figure, (a) is a front sectional view of an electric field processing fryer, (b) is a top sectional view, (c) is an enlarged sectional view of a portion shown by a circle C in (a), and (d) is (a). It is an enlarged cross-sectional view of the portion shown by the circle D in the above.

In (a), 21 is a conductive outer container having a bottomed rectangular parallelepiped shape with an open top and made of an edible oil impermeable stainless steel plate or the like.

Reference numeral 22 denotes a rectangular parallelepiped shape with an open upper portion, which is a conductive inner container made of stainless wire mesh or stainless punching metal so that cooking oil can permeate. The inner container 21 is electrically separated from the outer container 21 via a heat-resistant insulating spacer 23 made of PTFE plastics, ceramics, or the like, and is housed in a nested structure at intervals.
An appropriate number of heat-resistant insulating spacers 23 are used.

A high-voltage power supply device 27 applies a commercial AC high voltage of 6800 V boosted by a transformer between the outer container 21 and the inner container 22.
As the high-voltage power supply device, in addition to the commercial AC high-voltage power supply device, the DC high-voltage power supply device described in JP-A-2019-76191 and the high-frequency medium-pressure power supply device described in JP-A-2019-80662 are used.
Specifically, one end of the high-voltage power supply device 27 is connected to the inner container 22, the other end is grounded, and the outer container 21 is grounded.

This electric field treatment fryer has a rectangular parallelepiped shape with an open upper part, and is a shielding container made of a metal, insulator, or a mesh of insulator-coated metal or a perforated plate so that a heating medium such as edible oil or fat can pass through. 24 is further added.

The shielding container 24 is housed inside the inner container 22 in a nested structure at intervals via a heat-resistant insulating spacer 25 made of PTFE plastics, ceramics, or the like. Unlike the heat-resistant insulating spacer 23 that secures the electric field action space, the heat-resistant insulating spacer 25 does not need to have a function higher than that of heat-resistant insulation, and therefore does not need to be thick.
An appropriate number of heat-resistant insulating spacers 25 are used.

An appropriate material such as a conductor, an insulator-coated conductor, or an insulator can be used for the shielding container 24, and if necessary, the operator directly or indirectly touches the inner container 22 to which a high voltage is applied. A structure that does not cause an electric shock is sufficient.
Further, when the shielding container 24 is made of a conductor, the shielding container is grounded through the outer container by electrically contacting the shielding container with the outer container, so that an electric shock accident is completely avoided. ..

The shape of the outer container 21, the inner container 22, and the shielding container 24 can be a cylindrical shape as well as a rectangular shape.
The bottom of the outer container 21 is indispensable for accommodating a heating medium such as edible oil and fat, but the bottom is not indispensable for the inner container 22 and the shield 24, and the outer container 21 may have a rectangular tubular shape or a cylindrical shape.

FIG. 4 describes Example 2 in which the present invention is applied to an electric field processing refrigerator.
In this figure, (a) is a top sectional view of the overall configuration of the electric field treatment refrigerator according to the second embodiment, (b) is a front sectional view of the entire configuration of the electric field treatment refrigerator, and (c) is shown by a circle C in (a). An enlarged cross-sectional view of a portion, (d) is an enlarged cross-sectional view of the portion represented by a circle D in (a).

In (a), 31 is a rectangular parallelepiped shape with an open front surface, and is an outer case made of a stainless steel plate or the like.
Reference numeral 32 denotes a rectangular parallelepiped shape with an open front surface, which is an inner case made of stainless wire mesh or stainless punching metal so that cooling air can permeate.

The inner case 32 is housed inside the outer case 31 in a nested structure at intervals via an insulating spacer 33, and the inner case 32 and the outer case 31 are electrically separated from each other. An appropriate number of insulating spacers 33 are used.

An outer door 35 and an inner door 36 corresponding to the outer case 31 and the inner case 32 are provided on the front surface, respectively.
The outer door 35 is made of a stainless steel plate or the like like the outer case 31, and is electrically connected to the outer case 31.
Like the inner case 32, the inner door 37 is made of a stainless wire mesh or a stainless perforated plate to ensure air permeability, and is electrically connected to the inner case 12.
The outer door 35 and the inner door 37 are configured with an insulating spacer 33 at a distance. An appropriate number of insulating spacers 33 are used.

Commercial AC high-voltage power supply device 36 between the outer case 31 and inner case 32, DC high-voltage power supply device in JP-A-2019-86193, AC or DC high-voltage from the DC high-voltage source in Japanese Patent Application No. 2019-86194. Is supplied.
Specifically, one end of the high-voltage power supply device 36 is connected to the inner case 32, the other end is grounded, and the outer case 31 is grounded.

The electric field processing refrigerator is further provided with a shielding case 34 having a rectangular parallelepiped shape with an open front and made of a net or a perforated plate so that cooling air can permeate.

The shielding case 34 is housed inside the inner case 32 in a nested structure at intervals via an insulating spacer 39. An appropriate number of insulating spacers 39 are used.

Further, a shielding door 38 corresponding to the shielding case 34 is provided, and the shielding door 38 is made of a metal, an insulator, or a mesh or a perforated plate of an insulator-coated metal so that cooling air can permeate like the shielding case 34. When configured and made of metal, the shielding door 38 is electrically connected to the shielding case 34.
The shielding door 38 and the inner door 37 are configured with an insulating spacer 39 at a distance.
Unlike the insulating spacer 33 that secures the electric field working space, the insulating spacer 39 does not need to have a function more than insulation, and therefore does not need to have a thickness.

The shielding case 34 and the shielding door 38 are sufficient as long as they do not cause an electric shock when the operator directly or indirectly touches the inner case 32 to which a high voltage is applied.

When the shielding door 38 is made of a conductor, the shielding case 34 is grounded through the outer container and the shielding door 38 is grounded through the outer door by making electrical contact with the outer door of the shielding door 38. Therefore, electric shock accidents are completely avoided.

Example 3, which is a modification of the electric field processing fryer of Example 1, will be described with reference to FIG.
The upper edge of the shielding container 24 of the electric field processing fryer of Example 1 shown in FIG. 3 has a simple shape, but the upper edge of the shielding container 24 of the electric field processing fryer of Example 3 has a collar 29 extending outward. The outer edge of the collar 29 is in contact with the inside of the outer container 21.

In FIG. 5, (a) is a front sectional view of the entire configuration of the electric field processing fryer of Example 3, (b) is a top sectional view of the overall configuration of the electric field processing fryer, and (c) is a portion shown by a circle C in (a). (D) is an enlarged cross-sectional view of a portion represented by a circle D in (a).

In (a), 21 is a bottomed rectangular parallelepiped shape with an open top, and is a conductive outer container made of a stainless plate or the like that is impermeable to cooking oil, and accommodates a heating medium such as cooking oil.

Reference numeral 22 denotes a rectangular parallelepiped shape having an open upper portion, and is a conductive inner container made of stainless wire mesh or stainless punching metal so that cooking oil, which is a heating medium, can permeate. The inner container 22 is electrically separated from the outer container 21 via a heat-resistant insulating spacer 23 made of PTFE plastics, ceramics, or the like, and is housed in a nested structure at intervals.
An appropriate number of heat-resistant insulating spacers 39 are used.

A commercial AC high voltage of 6800V boosted by a transformer is applied from the power supply device 27 between the outer container 21 and the inner container 22.
As the high-voltage power supply device, in addition to the commercial AC high-voltage power supply device, the DC high-voltage power supply device described in JP-A-2019-76191 and the high-frequency medium-pressure power supply device described in JP-A-2019-80662 are used.

Reference numeral 24 denotes a rectangular parallelepiped shape having an open upper portion, which is a shielding container made of a metal, an insulator, a mesh of an insulator-coated metal, or a perforated plate so that a heating medium such as edible oil or fat can permeate. It is housed in a nested structure inside the container 22.

A collar 26 extending outward is formed at the upper end of the shielding container 24, and the outer edge of the collar 26 is in contact with the inside of the outer container 21.
Since the position of the shielding container 24 with respect to the outer container 21 and the inner container 22 is regulated by the collar 26, the heat-resistant insulating spacer 25 arranged between the inner container 22 and the shielding container 24 becomes unnecessary. The heat-resistant insulating spacer 25 that is no longer needed is shown by a broken line in (c).
An appropriate number of heat-resistant insulating spacers 25 are used.
The heat-resistant insulating spacer 25 does not need to have a thickness more than the heat-resistant insulating spacer 23, unlike the heat-resistant insulating spacer 23 that secures the electric field action space.

Further, when the shielding container 24 is made of a conductor such as stainless steel, if the outer end of the collar 26 and the outer container 21 are electrically connected, the shielding container 24 is grounded via the outer container 21 and the operator receives an electric shock. Accidents are more completely avoided.

Example 4, which is a further modification of the electric field processing fryer of Example 3 shown in FIG. 5, will be described with reference to FIG.
The upper edge of the shielding container 24 of the electric field treatment fryer of Example 3 has a collar 28 that extends outward like the electric field treatment fryer of Example 2, but the outer edge extends beyond the upper end edge of the outer container 21. , Placed on the upper edge of the outer container 21.

In FIG. 6, (a) is a front sectional view of the entire configuration of the electric field processing fryer of Example 4, (b) is a top sectional view of the entire configuration of the electric field processing fryer, and (c) is a portion shown by a circle C in (a). It is an enlarged sectional view of.

In (a), 21 has a bottomed rectangular parallelepiped shape with an open top, and a heating medium such as cooking oil is housed in a conductive outer container made of a stainless plate or the like that is impermeable to cooking oil.

Reference numeral 22 is a rectangular parallelepiped shape with an open upper portion, and is a conductive inner container made of stainless wire mesh or stainless punching metal so that cooking oil can permeate. The inner container 22 is electrically separated from the outer container 21 via a heat-resistant insulating spacer 23 made of PTFE plastics, ceramics, or the like, and is housed in a nested structure at intervals. An appropriate number of heat-resistant insulating spacers 23 are used.

Reference numeral 24 denotes a rectangular parallelepiped shape having an open upper portion, which is a shielding container made of a metal, an insulator, a mesh of an insulator-coated metal, or a perforated plate so that a heating medium such as edible oil or fat can permeate. It is housed in a nested structure inside the container 22.
The shielding container 24 is housed in the inner container 22 in a nested structure at intervals from the inner container 22 via a heat-resistant insulating spacer 25.
Unlike the heat-resistant insulating spacer 23 that secures the electric field action space, the heat-resistant insulating spacer 25 does not need to have a function higher than that of heat-resistant insulation, and therefore does not need to be thick. An appropriate number of heat-resistant insulating spacers 25 are used.

A collar 28 extending outward is formed at the upper end of the shielding container 24, and the tip of the collar 28 is placed on the upper end edge of the outer container 21.
Since the vertical position of the shielding container 24 is regulated by the collar 28, the heat-resistant insulating spacer arranged between the bottom of the inner container 22 and the shielding container 24 becomes unnecessary. The heat-resistant insulating spacer 25'that is no longer needed is shown by a broken line in (c).
When the shielding container 24 is made of a conductor such as stainless steel, the shielding container 24 is grounded via the outer container 21 due to the electrical contact between the flange 28 and the upper end edge of the outer container 21, causing an electric shock accident to the operator. More completely avoided.

A modified example 5 from the electric field processing fryer of the fourth embodiment shown in FIG. 6 will be described with reference to FIG.
The collar 28 at the upper end of the shielding container 24 of the electric field treatment fryer of Example 4 has a simple flat plate shape, but the upper edge of the outer container 21 is attached to the outer edge of the collar 28 at the upper end of the shielding container 24 of the electric field treatment fryer of Example 5. A locking portion 29 for locking to is formed.

In FIG. 7, (a) is a front sectional view of the entire configuration of the electric field processing fryer of Example 5, (b) is a top sectional view of the entire configuration of the electric field processing fryer, and (c) is a portion shown by a circle C in (a). It is an enlarged sectional view of.

A collar 28 extending outward is formed at the upper end of the shielding container 24, and a downward locking portion 29 for locking to the upper end edge of the outer container 21 is formed at the tip of the collar 28.
Since the position of the shielding container 24 with respect to the outer container 21 is regulated by the locking portion 29, the heat-resistant insulating spacer 25 arranged between the inner container 22 and the shielding container 24 becomes unnecessary. The heat-resistant insulating spacer 25'that is no longer needed is shown by a broken line in (b) and (c), respectively.

When the shielding container 24 is made of a conductor such as stainless steel, if the flange 28 or the locking portion 29 and the upper end edge of the outer container 21 are sufficiently electrically connected, the shielding container 33 will be grounded via the outer container 21. The operator's electric shock accident is more completely avoided.

Example 6 in which the electric field processing fryer of Example 1 shown in FIG. 3 is modified will be described with reference to FIG.
The upper end of the outer container 21 of the electric field treatment fryer of Example 1 has a simple shape, but the upper end of the outer container 21 of the electric field treatment fryer of Example 6 is provided with a flange 30 overhanging inward, and an inner edge thereof. The end is in contact with the outside of the shielding container 24.

In FIG. 8, (a) is a front sectional view of the entire configuration of the electric field processing fryer of Example 6, and (b) is an enlarged sectional view of a portion shown by a circle B in (a).

Reference numeral 22 is a rectangular parallelepiped shape with an open upper portion, and is a conductive inner container made of stainless wire mesh or stainless punching metal so that cooking oil can permeate. The inner container 22 is electrically separated from the outer container 21 via a heat-resistant insulating spacer 23 made of PTFE plastics, ceramics, or the like, and is housed in a nested structure at intervals.

This electric field treatment fryer has a rectangular parallelepiped shape with an open upper part, and is a shielding container made of a metal, insulator, or a mesh of insulator-coated metal or a perforated plate so that a heating medium such as edible oil or fat can pass through. 24 is added.

The shielding container 24 is housed inside the inner container 22 in a nested structure at intervals via a heat-resistant insulating spacer 25 made of PTFE plastics, ceramics, or the like. Unlike the heat-resistant insulating spacer 23 that secures the electric field action space, the heat-resistant insulating spacer 25 does not need to have a function more than heat-resistant insulation, and therefore does not need to be thick. An appropriate number of heat-resistant insulating spacers 25 are used.

The open upper end of the outer container 21 has a collar 30 overhanging inward, and the inner edge of the collar 30 is in contact with the outside of the shielding container 24.
Since the position of the shielding container 24 with respect to the outer container 21 and the inner container 22 is regulated by the collar 30, the heat-resistant insulating spacer arranged between the inner container 22 and the shielding container 24 becomes unnecessary. The heat-resistant insulating spacer 25'that is no longer needed is shown by a broken line in (b).
Further, when the shielding container 24 is made of a conductor such as stainless steel, if there is electrical contact between the outer edge of the flange 30 and the outer container 21, the shielding container 24 is grounded via the outer container 21 and the operator can use the shielding container 24. Electric shock accidents are more completely avoided.

Example 7 in which the configurations of the electric field processing fryer of Example 4 shown in FIG. 6 and the electric field processing flyer of Example 6 shown in FIG. 8 are combined will be described with reference to FIG.

The upper edge of the outer container 21 of the electric field treatment fryer of Example 6 shown in FIG. 8 has a collar 30 overhanging inward.
On the other hand, the upper end edge of the shielding container 24 of the electric field processing fryer of Example 4 shown in FIG. 6 has a collar 28 extending outward.

The electric field treatment fryer of Example 7 is a collar extending outside the upper edge of the shielding container 34 of the electric field treatment fryer of Example 4 shown in FIG. 6 on the collar 30 overhanging the inside of Example 6 shown in FIG. 28 is placed.

In FIG. 9, (a) is a front sectional view of the entire configuration of the electric field processing fryer of Example 7, (b) is an enlarged sectional view of a portion indicated by a circle B in (a), and (c) is a circle in (a). It is an enlarged sectional view of the part shown by C.

Reference numeral 24 denotes a rectangular parallelepiped shape having an open upper portion, which is a shielding container made of a metal, an insulator, a mesh of an insulator-coated metal, or a perforated plate so that a heating medium such as edible oil or fat can permeate. It is stored in a nested structure inside the container 22.

A collar 30 overhanging inward is formed at the upper end of the outer container 21.
At the upper end of the shielding container 24, a collar 28 having a size that extends outward and overlaps with the collar 30 of the outer container 21 is formed, and the collar 28 is placed on the collar 30.

Since the positions of the shielding container 24 with respect to the outer container 21 and the inner container 22 are regulated by these

collars

30 and 28, the heat-resistant insulating spacer arranged between the inner container 22 and the shielding container 24 becomes unnecessary. The heat-resistant insulating spacers 25'that are no longer needed are shown by broken lines in (b) and (c), respectively.

Further, when the shielding container 24 is made of a conductor made of stainless steel or the like, if the collar 28 and the collar 30 are electrically contacted, the shielding container 24 is grounded via the outer container 31, and the operator's electric shock accident is more likely to occur. Completely avoided.

A modified example 8 of the electric field processing refrigerator of the second embodiment shown in FIG. 4 will be described with reference to FIG.
The front opening of the shielding case 34 of the electric field processing refrigerator shown in FIG. 4 has a simple shape, but the front opening of the shielding case 34 of the electric field processing refrigerator of Example 7 has a collar 40 extending outward. , The outer edge of the collar 40 is in contact with the inside of the outer case 31.

Since the vertical and horizontal spacing between the shielding case 34 and the outer case 31 is defined by the collar 40, the insulating spacers arranged on the upper, lower, left and right sides of the shielding case 34 and the outer case 31 in the electric field processing refrigerator of the second embodiment are unnecessary. As a result, the overall configuration is simplified and the number of parts is reduced.
Further, since the inner case 32 to which a high voltage is applied is hidden by the collar 40 of the shielding case 34, there is no risk of electric shock.
Further, by using a conductor such as stainless steel for the shielding case 34 and electrically connecting the outer edge of the collar 41 and the outside of the shielding case 34, an electric shock accident can be avoided more completely.

In FIG. 10, (a) is a top sectional view of the overall configuration of the electric field treatment refrigerator of Example 7, (b) is a front sectional view of the entire configuration of the electric field treatment refrigerator, and (c) is a portion shown by a circle C in (a). (D) is an enlarged cross-sectional view of a portion represented by a circle D in (a).

A commercial AC high voltage of 6800V boosted by a transformer is applied from the power supply device 36 between the outer case 31 and the inner case 32.
As the high-voltage power supply device, in addition to the commercial AC high-voltage power supply device, the DC high-voltage power supply device described in JP-A-2019-76191 and the high-frequency medium-pressure power supply device described in JP-A-2019-80662 are used.

Reference numeral 34 denotes a rectangular parallelepiped shape having an open front surface, which is a shielding case made of a metal, an insulator, or a mesh of an insulator-coated metal or a perforated plate so that cooling air can permeate, and is inside the inner case 32. It is stored in a nested structure.

A collar 40 extending outward is formed at the open end of the shielding case 34, and the tip of the collar 40 is in contact with the inside of the outer case 31.

Since the tip of the collar 40 is in contact with the inside of the outer case 31, the position of the shielding case 34 with respect to the outer case 31 is restricted. Therefore, the insulating spacer 39 arranged between the inner case 32 and the shielding case 34. Is no longer needed. The heat-resistant insulating spacers that are no longer needed are indicated by broken lines as 39'in (c) and (d), respectively.

When the shielding case 34 is made of a conductor such as stainless steel, if the collar 40 is electrically contacted with the inside of the outer case 31, the shielding case 34 is grounded via the outer case 31 and an electric shock accident occurs by the operator. Is more completely avoided.

An outer door 35, an inner door 37, and a shielding door 38 corresponding to the outer case 31, the inner case 32, and the shielding case 34 are provided on the front surface.
The outer door 35 is made of a stainless steel plate or the like like the outer case 31, and is electrically connected to the outer case 31.
Like the inner case 32, the inner door 37 is made of a stainless wire mesh or a stainless perforated plate so that cooling air can permeate, and is electrically connected to the inner case 32.
The outer door 35 and the inner door 37 are configured with an insulating spacer 33 at a distance.
Like the shielding case 34, the shielding door 38 is made of a metal, an insulator, or a mesh or a perforated plate of an insulator-coated metal so that cooling air can permeate.

When the shielding door 38 is made of a conductor such as stainless steel, if the shielding door 38 is electrically connected to the shielding case 34, the shielding door 38 is grounded via the shielding case 34 and the outer case 31, and the operator Electric shock accidents are more completely avoided.
To.

Example 9 which is a modification of the electric field processing refrigerator of Example 8 shown in FIG. 10 will be described with reference to FIG.
An insulating spacer 39 for keeping a space from the inner case 32 is provided on the back surface of the shielding case 34 of the electric field processing refrigerator of the eighth embodiment shown in FIG.
By determining the front-rear position of the collar 40 by the insulating spacer 33 of the front opening that regulates the distance between the outer case 31 and the inner case 32, the insulating spacer 39 on the back surface of the shielding case 34 can be eliminated, and the overall configuration can be obtained. Is simplified and the number of parts is reduced. Further, by using a conductor such as stainless steel for the shielding case 34 and electrically connecting the outer edge of the collar 41 and the outside of the shielding case 34, an electric shock accident can be avoided more completely.

In FIG. 11, (a) is a top sectional view of the overall configuration of the electric field treatment refrigerator of Example 7, (b) is a front sectional view of the entire configuration of the electric field treatment refrigerator, and (c) is a portion shown by a circle C in (a). (D) is an enlarged cross-sectional view of a portion represented by a circle D in (a).

A collar 40 that extends outward is formed at the open end of the shielding case 34, and the front-rear position of the collar 40 is regulated by the insulating spacer 33 of the front opening that regulates the distance between the outer case 31 and the inner case 32, and the collar 40. The tip of 40 is in contact with the inside of the outer case 31.

Since the position of the shielding case 34 with respect to the outer case 31 is restricted by the tip of the collar 40 in contact with the inside of the outer case 31, the insulating spacer 39 arranged between the inner case 32 and the shielding case 34 is removed. It becomes unnecessary. Further, by determining the front-rear position of the collar 40 by the insulating spacer 33 of the front opening that regulates the distance between the outer case 31 and the inner case 32, the insulating spacer 39 on the back surface of the shielding case 34 becomes unnecessary.
The heat-resistant insulating spacers that are no longer needed are indicated by broken lines as 39'in (c) and (d), respectively.

When the shielding door 38 is made of a conductor such as stainless steel, if it is electrically connected to the shielding case 34, the shielding door 38 will be grounded via the shielding case 34 and the outer case 31, and an electric shock accident of the operator will occur. More completely avoided.

A modified example 10 of the electric field processing refrigerator of the second embodiment shown in FIG. 4 will be described with reference to FIG.
The front opening of the outer case 31 of the electric field treatment refrigerator of Example 2 shown in FIG. 4 has a simple shape, but the front opening of the outer case 31 of the electric field treatment refrigerator of Example 10 has a collar 41 extending inward. The inner edge of the collar 41 is in contact with the outside of the shielding case 31.

Since the vertical and horizontal spacing between the shielding case 34 and the outer case 31 is defined by the collar 41, the insulating spacers arranged on the upper, lower, left and right sides of the shielding case 34 and the inner case 32 in the electric field processing refrigerator of the second embodiment are unnecessary. As a result, the overall configuration is simplified and the number of parts is reduced. Further, by using a conductor such as stainless steel for the shielding case 34 and electrically connecting the outer edge of the collar 41 and the outside of the shielding case 34, an electric shock accident can be avoided more completely.

In FIG. 12, (a) is a top sectional view of the overall configuration of the electric field treatment refrigerator of Example 10, (b) is a front sectional view of the entire configuration of the electric field treatment refrigerator, and (c) is a portion shown by a circle C in (a). (D) is an enlarged cross-sectional view of a portion represented by a circle D in (a).

A collar 41 extending inward is formed on the front portion of the outer case 31, and the inner edge of the collar 41 is in contact with the outside of the shielding case 34. As a result, the vertical and horizontal positions of the shielding ace are regulated by the collar 41.
An insulating spacer 39 is provided on the back surface of the shielding case 43 to regulate the distance between the shielding case 34 and the inner case 32, and the shielding case 43 is insulated from the inner case 42.
The insulating spacer 39 is fixed to the outside of the shielding case 34 by means such as screwing.

Since the inner edge of the collar 41 of the outer case 31 is in contact with the outside of the shielding case 34, the position of the shielding case 34 with respect to the outer case 31 is restricted, so that the shielding case 34 is arranged between the inner case 32 and the shielding case 34. The insulating spacer 39 that regulates the vertical and horizontal positions of the shielding case 34 becomes unnecessary.
The heat-resistant insulating spacers that are no longer needed are indicated by broken lines as 39'in (c) and (d), respectively.

When the shielding case 34 is made of a conductor such as stainless steel, if the outer edge of the collar 41 and the outside of the shielding case 34 are electrically connected, the shielding case 34 is grounded via the outer case 31 and the operator can use the shielding case 34. Electric shock accidents are more completely avoided.

An outer door 35, an inner door 37, and a shielding door 38 corresponding to the outer case 31, the inner case 32, and the shielding case 34 are provided on the front surface.
The outer door 35 is made of a stainless steel plate or the like like the outer case 31, and is electrically connected to the outer case 31.
The outer door 35 and the inner door 37 are configured with an insulating spacer 33 at a distance.
Like the inner case 32, the inner door 37 is made of a stainless wire mesh or a stainless perforated plate so that cooling air can permeate, and is electrically connected to the inner case 32.

Like the shielding case 34, the shielding door 38 is made of a metal, an insulator, or a mesh of an insulator-coated metal or a perforated plate so that cooling air can permeate.

A modified example of the electric field processing refrigerator of the second embodiment of FIG. 4 will be described with reference to FIG.
The electric field processing refrigerator of Example 10 is a combination of Example 7 shown in FIG. 10 and Example 9 shown in FIG.

The front edge of the shielding case 34 of the electric field processing refrigerator of Example 7 shown in FIG. 10 has a collar 40 extending outward.
On the other hand, the front end of the outer case 31 of the electric field processing refrigerator of Example 9 shown in FIG. 12 has a collar 41 protruding inward.

In the electric field treatment refrigerator of Example 10, a collar 40 extending outside the shielding case 34 of the electric field treatment refrigerator of Example 7 shown in FIG. 10 is superposed on the collar 41 overhanging inside of Example 9 shown in FIG. Will be done.

Since the collar 40 is superposed on the collar 41, the distance between the shield case 34 and the outer case 31 is defined in the vertical, horizontal, and front-rear distances. Therefore, in the electric field processing refrigerator of the second embodiment, the shield case 34 and the inner case 32 are vertically and horizontally spaced. The insulating spacers arranged on the rear surface and the insulating spacers arranged on the rear surface are no longer required, which simplifies the overall configuration and reduces the number of parts.

Further, if the shielding case 34 is made of a conductor such as stainless steel and the outer edge of the collar 41 and the outside of the shielding case 34 are electrically connected, the shielding case 34 is grounded via the outer case 31 and the operator receives an electric shock. Accidents are more completely avoided.

In FIG. 13, (a) is a top sectional view of the overall configuration of the electric field treatment refrigerator of Example 10, (b) is a front sectional view of the entire configuration of the electric field treatment refrigerator, and (c) is a portion shown by a circle C in (a). (D) is an enlarged cross-sectional view of a portion represented by a circle D in (a).

A collar 41 extending inward is formed on the front portion of the outer case 31, and the inner edge of the collar 41 is in contact with the outside of the shielding case 34. As a result, the vertical and horizontal positions of the shielding case are regulated by the collar 41.
An insulating spacer 39 is provided on the back surface of the shielding case 43 to regulate the distance between the shielding case 34 and the inner case 32, and the shielding case 43 is insulated from the inner case 42.
The insulating spacer 39 is fixed to the outside of the shielding case 34 by means such as screwing.

An outer door 35, an inner door 37, and a shielding door 38 corresponding to the outer case 31, the inner case 32, and the shielding case 34 are provided on the front surface.
The outer door 35 is made of a stainless steel plate or the like like the outer case 31, and is electrically connected to the outer case 31.
Like the inner case 32, the inner door 37 is made of a stainless wire mesh or a stainless perforated plate so that cooling air can permeate, and is electrically connected to the inner case 32.
The outer door 35 and the inner door 37 are configured with an insulating spacer 33 at a distance. The shielding door 38 is made of metal, an insulator, or an insulator-coated metal so that cooling air can permeate like the shielding case 34. It is composed of a net or a perforated plate.

The high voltage power supply device used will be described with reference to FIG.
The power supply device shown in (a) is a commercially used AC power supply that is widely used, and is simply composed of a transformer.
Commercial AC100V is supplied to the primary winding of the transformer, commercial AC6kV is output from the secondary winding, and commercial AC is output from the output terminal between the outer container 1 and the inner container 2 of the electric field processing fryer. AC6kV is supplied.

Since the AC high-voltage power supply device using a transformer has a high voltage, it not only has a large number of windings, but also requires consideration for safety, so it is large and heavy.
In order to deal with this problem, the present inventor has proposed to use a DC high voltage power supply instead of the AC high voltage power supply device.

Japanese Patent Application Laid-Open No. 2019-76191 shows an electric field processing fryer that employs a multi-stage rectifier circuit, and Japanese Patent Application Laid-Open No. 2019-80622 shows an electric field processing fryer that employs a DC high voltage generation circuit that combines a differentiating circuit and a booster circuit. There is.
Further, Japanese Patent Application Laid-Open No. 2019-86194 shows an electric field processing refrigerator adopting a multi-stage rectifier circuit, and Japanese Patent Application Laid-Open No. 2019-86193 shows an electric field processing refrigerator adopting a DC high voltage generation circuit by combining a differentiating circuit and a booster circuit. Has been done.

These high voltage generation circuits will be described.
Shown in (b) is a conceptual configuration of a DC high-voltage power supply that utilizes a Cockcroft-Walton multi-stage double-voltage half-wave rectifier circuit (CCW circuit), which is well-known as a high-voltage DC power supply.
The CCW circuit obtains a high-frequency current from a DC input, and by stacking a double-voltage rectifier circuit with a diode and a capacitor, a double-voltage rectifier circuit is obtained for each double-voltage rectifier circuit, and finally millions of DCW circuits are obtained. A DC output of V can be obtained.

(C) is an extension of the half-wave rectification CCW circuit of (a) to a full-wave rectification CCW circuit, and a more uniform output voltage can be obtained.

(D) and (e) are igniters used in ignition devices for gas fuels and liquid fuels, and the steepness of the rising portion of the square wave and the falling portion of the sawtooth wave differentiates the voltage change, and as a result. From the obtained high voltage, an ultra-high voltage exceeding 10000V is obtained by a flyback transformer.

The electric field processing refrigerator according to the invention of the present application can be applied to all food processing equipment that heat-processes using oil such as tempura and dumplings, in addition to ordinary refrigerators used in restaurants and the like.

Furthermore, the electric field processing refrigerator according to the invention of the present application can be applied to transportation equipment, storage of organs for transplantation, storage of bodies, and thawing equipment, in addition to ordinary refrigerators used in restaurants and the like.

Furthermore, in addition to foodstuffs and corpses that do not have a life reaction, it is also applicable to processing equipment that has a life reaction such as plant cultivation and fresh flower preservation.

1,21

Outer container

2,22

Inner container

3,23,25 Heat-resistant

insulating spacer

4,35,38 Outer lid 5

Inner lid

6,16,27,36 High-voltage power supply 7 Sheath heater 11,31

Outer case

12,32

Inner case

13 , 33,39

Insulation spacer

14,35

Outer door

15,37 Inner door 24

Shielding container

26, 28, 30 Lid 29 Locking part 34 Shielding case 38 Shielding door

Claims

It has a fluid-impermeable metal outer container and a fluid-permeable metal inner container nested in the outer container, and a high voltage is applied between the outer container and the inner container. It is an electric field processing device:
Within the inner container, a fluid-permeable shielding container further nested is provided;
Electric field processing equipment.
The shielding container is made of metal and has electrical contact with the metal outer container:
The electric field processing apparatus according to claim 1.
The processing apparatus is a fryer: the electric field processing apparatus according to claim 1 or 2.
The processing device is a refrigerator: the electric field processing device according to claim 1 or 2.