JP2023041285A - Storage warehouse - Google Patents

Abstract

An object of the present invention is to provide a container capable of more accurately suppressing variations in electric field intensity distribution.
A container (10) includes a container body (20) and an electrode (70). The storage body 20 has a storage room S10 inside. The electrode 70 is provided on the inner surface of the upper wall portion 41 of the storage body 20 and forms an electric field in the storage chamber S10. Among the plurality of walls constituting the outer wall of the container body 20, the inner surface of the bottom wall portion 45 disposed facing the upper wall portion 41 is electrically grounded, and the inner surface of the upper wall portion 41 is electrically grounded. The inner surfaces of the right side wall 42, the left side wall 43, and the back wall except for the top wall 41 and bottom wall 45 are electrically insulated.
[Selection drawing] Fig. 2

Description

The present invention relates to storage.

Conventionally, there is a container described in Patent Document 1 below. The container described in Patent Literature 1 includes electrodes arranged therein and a power supply that applies a voltage to the electrodes. The container is formed in a rectangular box shape. The electrode is fixed to the inner surface of one side wall of the container, and forms an electrostatic field atmosphere inside the container based on the voltage applied from the power supply. As a result, the freshness of perishable food stored in the storage can be maintained for a long time as compared with the case where no electrostatic field is formed in the storage.

JP-A-2001-204428

In the container described in Patent Document 1, the rest of the side walls except for the one side wall on which the electrode is arranged are grounded, so the electric field in the container is basically generated from one side wall to It is formed so as to face the other side wall portion. Specifically, in the container described in Patent Document 1, since the electrodes are arranged on the bottom wall, electric fields are formed in the directions from the electrodes to the right side wall, the left side wall, and the upper wall. be done. At this time, since the distance from the electrode to the side walls is shorter than the distance from the electrode to the upper wall, an electric field is likely to be formed in the direction from the electrode to the side walls. It becomes difficult to form an electric field in the direction toward the part. This becomes a factor causing variations in the distribution of the electric field strength in the container. If perishable food or the like is placed in an area where the electric field is weak in the container, there is a possibility that the freshness of the food cannot be maintained.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a container capable of more accurately suppressing variations in electric field strength distribution.

A container for solving the above problems includes a container main body and an electrode. The storage body has a storage chamber inside. The electrodes are provided on the inner surface of a predetermined wall portion forming part of the outer wall of the storage body, and form an electric field in the storage chamber. Of the plurality of walls constituting the outer wall of the container main body, the wall facing the predetermined wall is defined as the facing wall, and the rest of the plurality of walls excluding the predetermined wall and the facing wall is a plurality of non-opposing walls, the inner surface of the opposing wall is electrically grounded, all or part of the predetermined wall is electrically insulated, and the plurality of non-opposing walls Part or all of the inner surface of at least one of the sections is electrically insulated.

If the inner surfaces of the predetermined wall portion and the non-opposing wall portion are electrically insulated as in this configuration, electrical It is possible to increase the distance to the part that is grounded. This makes it easier to form an electric field in the direction from the electrode toward the inner surface of the opposing wall, while making it more difficult to form an electric field in the direction from the electrode toward the predetermined wall and the non-opposing wall. As a result, since the directivity of the electric field formed by the electrodes can be enhanced, it is possible to more accurately suppress variations in the electric field strength distribution.

In the above container, the main body of the container is formed in a rectangular box shape, the predetermined wall portion is the upper wall portion of the main body of the container, and the opposing wall portion is the bottom wall portion of the main body of the container. , the plurality of non-opposing walls are preferably the rest of the plurality of walls of the container body, excluding the top wall, the bottom wall, and the door.
According to this configuration, articles stored in the storage chamber are less likely to come into contact with the electrodes arranged on the upper wall portion of the storage main body, so that damage to the electrodes can be easily avoided.

In the container described above, it is preferable that the predetermined wall portion is electrically insulated over the entire surface.
According to this configuration, almost no electric field is formed in the direction from the electrode toward the predetermined wall, so that it is possible to more accurately suppress variations in electric field intensity distribution.

In the container described above, it is preferable that the non-facing wall is electrically insulated over the entire surface.
According to this configuration, almost no electric field is formed in the direction from the electrode toward the non-facing wall portion, so that it is possible to more accurately suppress variations in electric field intensity distribution.

In the container described above, it is preferable that the predetermined wall portion and the non-facing wall portion are provided with an insulating member made of a member different from the container main body.
According to this configuration, even if the container main body is electrically grounded, by installing an insulating member afterward, only the inner surface of the opposing wall is electrically grounded. It can be easily realized.

In the container described above, the insulating member is preferably entirely made of an insulating material. Alternatively, the insulating member is preferably formed by applying an insulating material around a predetermined material.
It is preferable that the above storage includes a transformer that applies voltage to the electrodes and a control panel that controls the transformer, and the total weight of the transformer is less than 36 [kg].

It is preferable that the storage container is a new or second-hand product.

According to the container of the present invention, it is possible to more accurately suppress variations in electric field intensity distribution.

The perspective view which shows the perspective structure of the storage of embodiment. FIG. 2 is a cross-sectional view showing a cross-sectional structure taken along line II-II of FIG. 1; FIG. 3 is a cross-sectional view showing a cross-sectional structure taken along line III-III of FIG. 2; (A) and (B) are cross-sectional views showing the cross-sectional structure of the insulating member of the embodiment. Sectional drawing which shows the cross-sectional structure of the container of a comparative example. FIG. 6 is a cross-sectional view showing a cross-sectional structure taken along line VI-VI of FIG. 5; FIG. 7 is a chart showing electric field intensities at measurement points P1 to P5 shown in FIG. 6 in comparison between the container of the comparative example and the container of the embodiment; Sectional drawing which shows the cross-sectional structure of the container of other embodiment. Sectional drawing which shows the cross-sectional structure of the container of other embodiment. FIG. 10 is a cross-sectional view showing a cross-sectional structure taken along line XX of FIG. 9; Sectional drawing which shows the cross-sectional structure of the container of other embodiment.

An embodiment of the container will be described below with reference to the drawings. In order to facilitate understanding of the description, the same constituent elements in each drawing are denoted by the same reference numerals as much as possible, and overlapping descriptions are omitted.
A container 10 shown in FIG. 1 is used as a refrigerator for refrigerating articles to be stored therein. The articles stored in the container 10 are fresh foods, dairy products, noodles, and the like. Fresh foods include, for example, seafood such as fish and shellfish, fruits such as strawberries and apples, vegetables such as cabbage and tomatoes, meat such as beef and pork, eggs, and processed foods thereof. Dairy products include milk and cheese. Noodles are made from grain powder such as wheat flour and buckwheat flour. It should be noted that the articles stored in the storage shed 10 are not limited to foods, but may be fresh flowers, medicines, internal organs, and the like.

The container 10 can be used as a stationary refrigerator, a mobile refrigerator, or the like. A fixed refrigerator is a refrigerator installed indoors such as a food processing factory or a storage room. A mobile refrigerator is a refrigerator that is loaded onto a mobile object such as a ship or an airplane. Storage warehouse 10 may also be a transport or other container, or a non-movable warehouse such as a prefabricated warehouse. Furthermore, the storage shed 10 may be either new or second-hand.
As shown in FIG. 1, the container 10 includes a container body 20 in which articles can be stored, and a cooling device 30 built in the container body 20. As shown in FIG. In FIG. 1, the vertical direction upward is indicated by an arrow Z1, and the vertical direction downward is indicated by an arrow Z2.

The container main body 20 has a box body 40 and a pair of door portions 50 . The box 40 and the door portion 50 are made of a metal material such as aluminum or stainless steel, and are electrically grounded.
The box 40 is formed in a rectangular box shape having an opening in the front. A front opening of the box 40 is closed by a pair of doors 50 . Hereinafter, of the plurality of walls 41 to 45 constituting the outer wall of the box 40 shown in FIGS. The wall portion 42 located on the right side when viewed from the door portion 50 is called the "right side wall portion 42", and the wall portion 43 located on the left side when viewed from the door portion 50 is called the "left side wall portion 43". The wall portion 44 arranged on the back side when viewed from the door portion 50 is called the "back wall portion 44", and the wall portion 45 arranged vertically downward Z2 is called the "bottom wall portion 45". A space surrounded by the walls 41 to 45 and the door 50 forms a storage chamber S10, which is the internal space of the storage body 20. As shown in FIG. The accommodation room S10 is a space in which articles are accommodated. In order to improve the refrigerating performance of the container 10, each of the walls 41 to 45 and the door 50 of the box 40 is provided with heat insulation for suppressing heat transfer from the container S10 to the outside of the container 10. material is embedded.

As shown in FIG. 1, the pair of door portions 50 are connected to the box 40 so as to be openable and closable. In the container 10, by opening the door portion 50, it is possible to put any article into the accommodation room S10 or take out the article stored in the accommodation room S10 to the outside. Further, by closing the door portion 50, the accommodation room S10 becomes a closed space, and the articles inside the accommodation room S10 are stored in a cooling environment.

The cooling device 30 supplies cool air to the accommodation room S10 by being driven based on the supply of electric power, thereby cooling the inside of the accommodation room S10.
As shown in FIGS. 2 and 3, the container 10 further includes insulating members 61 to 65 and an electrode 70 arranged inside the container body 20. As shown in FIGS.

The insulating member 61 is provided on the upper wall portion 41 of the container main body 20 . The insulating member 61 is formed in a plate shape from an insulating material such as resin. The insulating member 61 may have a structure in which the whole is made of an insulating material 600 as shown in FIG. 4(A), or a predetermined material 601 as shown in FIG. It may have a structure in which an insulating material 602 is applied around the . The predetermined material 601 is made of iron, for example. The insulating member 61 is fixed to the inner surface of the upper wall portion 41 of the container body 20 via a bracket (not shown) made of an insulating material. The insulating member 61 is arranged to cover the entire inner surface of the upper wall portion 41 or most of the inner surface of the upper wall portion 41 . An electrode 70 is fixed to the bottom surface of the insulating member 61 .

The electrode 70 may be directly attached to the upper wall portion 41 of the container body 20 , or may be attached to the insulating member 61 and fixed to the upper wall portion 41 of the container body 20 via the insulating member 61 . may have been As a method of attaching the electrodes 70 and the like to the upper wall portion 41 of the container body 20, any method such as a method of fastening the upper wall portion 41 of the container body 20 using bolts, a method of placing on an angle, or the like can be used. It is possible to adopt. Further, the electrodes 70 and the like may be attached to the upper wall portion 41 of the storage body 20 without using fasteners such as bolts and angles. In other words, the method of attaching the electrode 70 and the like, the presence or absence of fasteners used for attachment, and the material of the fasteners are not limited.

The insulating members 62 to 64 are provided on the inner surfaces of the right side wall portion 42 , the left side wall portion 43 and the back wall portion 44 of the housing body 20 . Also, the insulating member 65 is provided on the inner surface of the pair of door portions 50 . These insulating members 62 to 65 are formed of sheets made of an insulating material such as polyester film, and attached to the inner surfaces of the walls 42 to 44 and the door 50 by means of an adhesive or the like. The insulating members 62 to 65 may also have a structure in which the material itself is an insulator, similar to the insulating member 61, or an insulating material is applied around another material (for example, iron). It may have a structure such as The insulating members 62-65 are arranged so as to cover the entire inner surfaces of the walls 42-44 and the door 50 or most of the inner surfaces thereof.

Thus, in the container 10 of the present embodiment, the inner surfaces of the upper wall portion 41, the right wall portion 42, the left wall portion 43, and the rear wall portion 44 of the container body 20, and the inner surface of the door portion 50 are They are electrically insulated by insulating members 61-65. On the other hand, the inner surface of the bottom wall portion 45 of the container body 20 is electrically grounded.

In the container 10 of the present embodiment, the upper wall portion 41 corresponds to a predetermined wall portion having the electrodes 70 on its inner surface. Also, the bottom wall portion 45 corresponds to a facing wall portion facing a predetermined wall portion. Further, the right side wall portion 42, the left side wall portion 43, the back wall portion 44, and the door portion 50 correspond to the non-opposing wall portions excluding the predetermined wall portion and the opposing wall portion.

As shown in FIG. 2 , the electrodes 70 are connected to a voltage application device 80 provided inside or outside the container body 20 . The voltage application device 80 includes a transformer 81 and a control panel 82 and applies a predetermined high voltage to the electrodes 70 . The transformer 81 boosts the voltage supplied from the power supply and applies it to the electrode 70 . The control panel 82 has various circuits and the like for controlling the transformer 81 . The high voltage applied from the voltage application device 80 to the electrode 70 may be, for example, an alternating voltage whose magnitude and direction change periodically over time, or may change in magnitude and direction over time. It may be a constant voltage that does not change. The electrode 70 forms an electric field in the storage chamber S10 based on the high voltage applied by the voltage application device 80. As shown in FIG.

Next, the action and effect of the storage shed 10 of this embodiment will be described. In addition, below, the article accommodated in accommodation room S10 is also called a content.
By forming an electric field in the storage room S10, it is possible to sterilize the contents in the storage room S10 and to accelerate the ripening of the contents. Therefore, the contents can be stored for a long period of time while maintaining freshness, and the taste of the contents can be amplified. In addition, since the freezing point of the content can be lowered by the presence of the content in an environment with a predetermined electric field, the content does not freeze even in a lower temperature environment, for example, a negative temperature environment. can be saved. Therefore, it is possible to maintain the freshness of the contents for a longer period of time.

On the other hand, if there are variations in the distribution of the electric field strength in the storage chamber S10, the effect of the above-described electric field formation may be lower than the effect that should be originally obtained, especially with respect to the objects existing in the area where the electric field strength is weak. , the effect may not be obtained in the first place.

In this regard, in the container 10 of the present embodiment, as described above, the inner surfaces of the upper wall portion 41, the right wall portion 42, the left wall portion 43, and the rear wall portion 44 of the container body 20, and the door portion 50 The inner surface of the is electrically insulated. Further, the inner surface of the bottom wall portion 45 of the container body 20 is electrically grounded. Therefore, when the electrode 70 forms an electric field in the storage chamber S10, an electric field as indicated by arrows in FIGS. 2 and 3 is likely to be formed in the storage chamber S10. That is, it becomes difficult to form an electric field in the direction toward the upper wall portion 41, the right side wall portion 42, the left side wall portion 43, the rear wall portion 44, and the door portion 50, which are electrically insulated from the electrode 70. From 70, only the electric field in the vertical direction toward the inner surface of the bottom wall portion 45 which is electrically grounded is likely to be formed. As a result, the directivity of the electric field formed by the electrode 70 can be enhanced, so that variations in the distribution of the electric field intensity within the storage chamber S10 can be more accurately suppressed.

Specifically, in the container 10 of the present embodiment, variations in the distribution of the electric field intensity are suppressed as compared with the container 100 of the comparative example shown in FIG. 5 . The container 100 of the comparative example shown in FIG. 10 different. A voltage of "7 [kV]" was applied to the electrode 70 in the container 100 of this comparative example, and the electric field intensity at the measurement points P1 to P5 of the bottom wall portion 45 shown in FIG. 6 was experimentally measured. 6, illustration of the door portion 50 is omitted. Similarly, for the container 10 of the present embodiment, a voltage of "7 [kV]" was applied to the electrode 70 to experimentally measure the electric field intensity at the measurement points P1 to P5 of the bottom wall portion 45. FIG. Those measurement results are as shown in FIG. The "rate of increase" in FIG. 7 indicates the ratio of the electric field strength of the container 10 of the present embodiment to the electric field strength of the container 100 of the comparative example in percentage.

As shown in FIG. 7, the electric field intensity of the container 10 of the present embodiment is higher than that of the container 100 of the comparative example at any of the measurement points P1 to P5. As shown in FIG. 7, in the container 100 of the comparative example, the ratio of the maximum electric field strength (2831 [V/m]) to the minimum electric field strength (812 [V/m]) is about 3.5. is. In contrast, in the warehouse 100 of the present embodiment, the ratio of the maximum electric field intensity (4164 [V/m]) to the minimum electric field intensity (1622 [V/m]) is approximately 2.6. Thus, in the container 10 of this embodiment, it is possible to form a more uniform electric field in the container S10. Therefore, it is possible to more reliably obtain the effects that should be originally obtained through the above-described electric field formation for the objects existing in any region of the storage chamber S10. In addition, as compared with the container 100 of the comparative example, in the container 10 of the present embodiment, the voltage generated from the voltage applying device 80 is reduced while maintaining the electric field strength in the bottom wall portion 45 that is the opposing wall portion. is possible. Therefore, the voltage application device 80 can use the transformer 81 with a smaller capacity, so that the weight of the voltage application device 80 can be reduced. Therefore, when the voltage application device 80 is built in the container 10, the weight of the voltage application device 80 can be reduced, so that the weight of the entire container 10 can be made lighter than that of the conventional container. Furthermore, if the voltage generated from the voltage application device 80 can be suppressed to a low voltage, safety can be improved, cost can be reduced, or weight can be reduced to increase the maximum loading capacity of the container 10. It is possible to expect an effect.

On the other hand, in the conventional container, it is necessary to form an electric field with a higher intensity in order to obtain a higher effect of ensuring the freshness of perishable food. That is, it is necessary to apply a higher voltage to the electrodes. In order to meet such requirements, the voltage pattern applied to the electrodes from the voltage application device includes not only a voltage pattern corresponding to a low voltage, but also a plurality of patterns such as a voltage pattern corresponding to a high voltage. It is In order to realize a plurality of voltage patterns, transformer capacities corresponding to them are required. As a result, conventional containment vaults must be equipped with multiple transformers. This increases the weight of the voltage application device, which in turn increases the weight of the entire container.

On the other hand, in the container 10 of the present embodiment, as described above, it is possible to form a more uniform electric field in the container 10. Therefore, even if the number of voltage patterns is reduced, a sufficient electric field likely to gain strength. If the number of voltage patterns can be reduced, the capacity of the transformer can be reduced. That is, the number of transformers 81 can be reduced. Therefore, in the container 10 of this embodiment, it is possible to reduce the total weight and total volume of the transformer 81 as compared with the conventional container.

Specifically, in the conventional warehouse, as the voltage pattern applied to the electrodes from the voltage application device, for example, a voltage pattern set for each 1 [kV] in the range of 2 [kV] to 7 [kV] is used. A total of six voltage patterns are used. In order to realize these six voltage patterns, six transformers are required in the voltage application device. Therefore, if the weight of one transformer is "6 [kg]", the total weight of the transformers is "36 [kg] (=6 [kg]×6)". On the other hand, in the storage warehouse 10 of the present embodiment, the number of transformers 81 can be reduced to less than six, so the total weight of the transformers can be less than "36 [kg]". .

Similarly, if the volume per transformer is "0.00594 [m ³ ]", the total volume of the transformers in the conventional storage is "0.03564 [m ³ ] (=0.00594 [m ³ ]×6)”. On the other hand, in the container 10 of the present embodiment, the number of transformers 81 can be reduced to less than six, so the total volume of the transformers 81 should be less than "0.03564 [m ³ ]". is possible.

Further, in the container 10 of the present embodiment, an electrode 70 is installed on the inner surface of the upper wall portion 41 of the container body 20 . This makes it difficult for the objects stored in the container main body 20 to come into contact with the electrodes 70 , thereby making it easier to avoid damage to the electrodes 70 , for example.
Furthermore, in the container 10 of the present embodiment, the entire inner surface of the upper wall portion 41 of the container body 20 on which the electrode 70 is arranged, or most of it is insulated by the insulating member 61 . In addition, the inner surfaces of the right side wall portion 42, the left side wall portion 43, and the back wall portion 44 of the container body 20, and the inner surface of the door portion 50 are also entirely covered, or most of them are covered by the insulating members 62 to 65. insulated. According to these configurations, the electric field in the direction from the electrode 70 to the bottom wall portion 45 of the container body 20 is more likely to be formed more accurately, so that it is possible to further suppress variations in the electric field strength distribution.

Further, in the container 10 of the present embodiment, a plate-like insulating member 61 made of a member different from the container main body 20 is attached to the upper wall portion 41 of the container main body 20 . In addition, sheet-like insulating members 62 to 65 is attached. According to these configurations, even if the container main body 20 is electrically grounded, by installing the insulating members 61 to 65 later, only the inner surface of the bottom wall portion 45 of the container main body 20 can be grounded. is electrically grounded.

The above embodiment can also be implemented in the following forms.
The inner surfaces of the right side wall portion 42, the left side wall portion 43, and the back wall portion 44 of the container body 20, and the inner surface of the door portion 50 may be formed in advance from an insulating material such as resin.

- The inner surface of the upper wall portion 41 of the container body 20 does not necessarily need to be insulated over the entire surface. For example, as shown in FIG. 8 , part of the inner surface of the upper wall portion 41 of the storage body 20 may not be covered with the insulating member 61 .
The inner surfaces of the right side wall portion 42, the left side wall portion 43, and the rear wall portion 44 of the container body 20 and the inner surface of the door portion 50 do not necessarily need to be insulated over the entire surface. For example, as shown in FIGS. 9 and 10, the inner surfaces of the right side wall portion 42, the left side wall portion 43, and the rear wall portion 44 of the container body 20 and the inner surface of the door portion 50 are partially It does not have to be covered with the insulating members 62-65.

In the container main body 20, the inner surface of the bottom wall portion 45 corresponding to the opposing wall portion is electrically grounded, and the inner surface of the upper wall portion 41 corresponding to the predetermined wall portion is electrically grounded. Part or all of the inner surface of at least one of the right side wall portion 42, the left side wall portion 43, the rear wall portion 44, and the door portion 50, which are insulated and correspond to the non-facing wall portions, are electrically insulated. Just do it. For example, the inner surface of the bottom wall portion 45 is electrically grounded, and part or all of the inner surfaces of the upper wall portion 41, the right side wall portion 42, the left side wall portion 43, and the back wall portion 44 are covered with an insulating member. Moreover, the inner surface of the door portion 50 may not be covered with the insulating member. In this case, the right side wall portion 42, the left side wall portion 43, and the back wall portion 44 are the upper wall portion 41, which is a predetermined wall portion, and the bottom wall, which is an opposing wall portion, among the plurality of wall portions of the container body 20. It corresponds to the rest of the walls except for the portion 45 and the door portion 50 .

・The electrode 70 is not limited to the upper wall portion 41 of the container body 20, and may The electric field can be applied in any direction in the storage chamber S10 as long as it is provided. For example, as shown in FIG. 11, when the electrode 70 is provided on the right side wall portion 42 of the container body 20, the upper wall portion 41, the right side wall portion 42, the back wall portion 44, and the bottom of the container body 20 are arranged. Insulating members 61 to 65 may be provided on the inner surface of each wall portion 45 and the inner surface of the door portion 50 . Also, the inner surface of the left side wall portion 43 of the container body 20 may be electrically grounded. In this case, the application direction of the electric field in the storage chamber S10 is the horizontal direction. In the container 10 shown in FIG. 11, the right wall portion 42 of the container body 20 corresponds to the predetermined wall portion, and the left wall portion 43 of the container body 20 corresponds to the opposing wall portion. 20, the upper wall portion 41, the back wall portion 44, the bottom wall portion 45, and the door portion 50 correspond to the non-facing wall portions.

- The structure of the container main body 20 can be changed as appropriate. For example, a plurality of storage chambers may be formed inside the storage body 20 . Further, the container main body 20 is not limited to the structure having the door portion 50 on the front surface, and may have the structure having the door portion 50 on the upper surface. Further, the container main body 20 is not limited to the structure having the pair of door portions 50, and may have a structure having only one door portion or a structure having three or more door portions.

- The storage chamber 10 is not limited to a refrigerator, and may be a normal temperature chamber, a heating chamber, a freezer, a freezer, or the like.
- The present disclosure is not limited to the above specific examples. Appropriate design changes made by those skilled in the art to the above specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each specific example described above, and its arrangement, conditions, shape, etc., are not limited to those illustrated and can be changed as appropriate. As long as there is no technical contradiction, the combination of the elements included in the specific examples described above can be changed as appropriate.

S10... Storage room, 10... Storage box, 20... Storage box main body, 41... Upper wall part (wall part, predetermined wall part), 42... Right side wall part (wall part, non-opposing wall part), 43... Left side wall Part (wall part, non-opposing wall part), 44... Back wall part (wall part, non-opposing wall part), 45... Bottom wall part (wall part, opposing wall part), 50... Door part (wall part, non-opposing wall part) wall portion), 61 to 65... insulating member, 70... electrode, 81... transformer, 82... control panel, 600... insulating material, 601... raw material, 602... insulating material.

Claims (9)

a storage body having a storage chamber inside;
an electrode provided on the inner surface of a predetermined wall portion forming part of the outer wall of the storage body and forming an electric field in the storage chamber,
Among the plurality of wall portions constituting the outer wall of the storage body, the wall portion arranged to face the predetermined wall portion is the opposing wall portion, and the remaining walls excluding the predetermined wall portion and the opposing wall portion When the plurality of wall portions are the plurality of non-opposing wall portions,
The inner surface of the facing wall is electrically grounded,
part or all of the inner surface of the predetermined wall is electrically insulated,
A part or all of the inner surface of at least one of the non-facing walls is electrically insulated. The container main body is formed in a rectangular box shape,
The predetermined wall portion is the upper wall portion of the storage body,
The facing wall portion is the bottom wall portion of the storage body,
The storage container according to claim 1, wherein the plurality of non-opposing wall portions are remaining wall portions excluding the upper wall portion, the bottom wall portion, and the door portion among the plurality of wall portions of the storage main body. . The container according to claim 1 or 2, wherein the predetermined wall portion is electrically insulated over the entire surface. The container according to any one of claims 1 to 3, wherein the non-opposing wall portion is electrically insulated over the entire surface. The container according to any one of claims 1 to 4, wherein the predetermined wall portion and the non-facing wall portion are provided with an insulating member made of a member different from the main body of the container. The container according to claim 5, wherein the insulating member is entirely made of an insulating material. The container according to claim 5, wherein the insulating member is formed by applying an insulating material around a predetermined material. a transformer that applies a voltage to the electrodes;
A control panel that controls the transformer,
The container according to any one of claims 1 to 7, wherein the transformer has a total weight of less than 36 [kg]. The container according to any one of claims 1 to 8, wherein the container is new or second-hand.

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