JP2007078271A - Food preservation showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a food preservation showcase providing safe and positive forming of an electrostatic field in a food preservation chamber without impairing functions. <P>SOLUTION: A refrigeration preservation device is provided with the food preservation chamber with at least a front face formed by a transparent body, and a cooling device cooling the food preservation chamber. A conductive plate provided with a multiplicity of through holes for connection to an electrostatic field generating power source is provided in an insulated space composed of a bottom of the food preservation chamber, and an insulator arranged around its periphery. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to an improvement in a showcase that displays fresh seafood and the like and stores them in a refrigerator.

  In sushi restaurants, etc., showcases with a refrigeration function have been installed so that customers can see the fresh seafood they provide. Such a showcase has a storage room for storing food that can be displayed with glass, and has functions equivalent to those of a refrigerator such as a compressor and a condenser.

Moreover, as disclosed in Patent Document 1, a method of forming an electrostatic field in a refrigerator and storing fresh food products in this atmosphere for a long period of time is widely known. As the electrostatic field forming means, a high-voltage electrostatic transformer is used, one pole on the secondary high-voltage side is insulated, and the other pole is connected to a shelf or case of a conductive metal material. Thereby, negative electrons due to electrostatic induction are applied, and the fresh food placed on the shelf can be refrigerated and stored in an electrostatic field atmosphere. In this case, the negative-electron generation condition is that the current value on the primary side of the high-voltage electrostatic transformer 100V is 0.02A to 0.3A per 1 m ^{2 of the} electrode, and the secondary side voltage that satisfies the primary side current value is 5000V to 20000V.

In the electrostatic field atmosphere formed in the refrigerator, it is usually stored in a temperature range of 3 ° to -3 °, but it does not freeze even at a low temperature of about -5 ° C. For this reason, it can be stored in a fresh state for a long period of time without causing cell destruction during freezing, and is a very suitable storage method for storing fresh food products.
Japanese Patent Application No. 2001-215074

The main purpose of the showcase is to display the stored items while refrigerated, but the showcase itself must be placed in a position where it can be seen and touched by the customer, and the size and design will not break the atmosphere of the store. It is also necessary to consider. For this reason, in order to form an electrostatic field in a showcase, first of all, it is necessary to ensure safety and not to increase the size because of the installation space. In addition, because the purpose is to display the stored items, it is necessary to install equipment necessary for forming an electrostatic field such as a high-voltage electrostatic transformer so that it is as inconspicuous as possible, and it can be easily removed for easy cleaning and cleaning. It is also a very important issue.

  In view of the situation as described above, the present inventors have finally completed the present invention as a result of intensive research, and the feature thereof is that a food storage room having at least a front surface formed of a transparent body, and the food storage room In a refrigerated storage device comprising a cooling device for cooling, an insulating space formed by an insulator disposed at the bottom of the food storage chamber and surroundings thereof is connected to an electrostatic field generating power source, and includes a large number of through holes. A conductive plate is provided.

  As a food preservation showcase in the present invention, an electrostatic field generating power source may be built in the showcase body, or may be provided separately. A separate body is preferable from the viewpoint of installation space because the structure of the showcase body becomes simple. The structure of the showcase body may be the same as that of a general business use case except for the electrostatic field generating power source and related devices.

  In order to form an electrostatic field in the food storage chamber of the showcase, a conductive plate connected to an electrostatic field generating power source is installed at the bottom of the food storage chamber. For this reason, an insulator is arranged on the bottom of the food storage room and the periphery thereof to form an insulating space, and a conductive plate is installed in the insulating space. The insulator may be a plastic plate, a plastic basket, an artificial grass or the like. Display fresh seafood directly or indirectly on a conductive plate. The conductive plate has a structure having a large number of through holes such as punching metal and expanded metal so that moisture generated from fresh seafood and the like does not accumulate. In addition to the plate shape, the conductive plate may have a corrugated shape, a net shape, or a structure in which unevenness is provided on the plate.

  It is preferable that the connection between the electrostatic field generating power source and the conductive plate can be easily attached and detached for easy cleaning of the conductive plate. Further, by not providing a special connection portion on the conductive plate side, it is easy to clean and the cost is low. Examples of the connecting means include contact by hanging the application chain, pinching with a clip, contact and pinching by installing on an electrode, and the like. When putting fresh fish and shellfish into and out of the showcase, it is dangerous if the power to the conductive plate is not cut off. Is provided.

When the electrostatic field generating power source is provided separately from the showcase, the wiring box is provided in the showcase body. The electrostatic field generating power source and the wiring box are connected by a high voltage cable or the like, and the electrostatic field generating power source may be placed under the counter or on a shelf. An electrode connected to the electrostatic field generating power source is provided in the wiring box, and a conductive plate is connected to this electrode.

  The food storage showcase according to the present invention provides a conductive plate having a large number of through-holes connected to an electrostatic field generating power source in an insulating space formed at the bottom of the food storage chamber of the showcase body, thereby It is possible to safely and reliably form an electrostatic field in the food storage room without impairing the function of Thereby, since the freshness maintenance of the stored fresh fish and shellfish becomes longer and discoloration hardly occurs, the appeal effect as a showcase can be further enhanced.

In addition, since the conductive plate installed in the food storage room can be connected to an electrostatic field generating power source by contact or sandwiching, it takes little effort for cleaning and cleaning. In particular, if the structure is connected from above the conductive plate such as an application chain, an insulator such as a spider placed at the bottom of the food storage chamber can be easily removed and cleaned, which has extremely useful effects in practice.

The present invention solves the above problems by forming an insulating space at the bottom of the food storage chamber of the showcase and providing a conductive plate connected to the electrostatic field generating power source in the insulating space.

  Fig.1 (a) (b) (c) shows one Example of the food preservation showcase 1 which concerns on this invention. The food storage showcase 1 has a structure in which fresh seafood is stored in a food storage chamber 2 whose front, top, and back are covered with glass and displayed while being refrigerated. A machine room below the food storage chamber 2 The food storage chamber 2 is cooled by a cooling device (not shown) such as a compressor or a condenser provided in 3. A glass door 21 that is opened and closed by sliding is provided on the back surface of the food storage chamber 2, and a safety switch 22 that turns on and off the electrostatic field generating power source 4 that is provided separately by detecting the opening and closing of the door 21 is provided. Yes. Further, a wiring box 5 connected to the electrostatic field generating power source 4 is provided on the side of the food storage chamber 2. The wiring box 5 and the electrostatic field generating power source 4 are connected by a high voltage cable 41 and a door sensor cable 42. Connecting.

  As shown in FIGS. 2A and 2B, the food storage chamber 2 is provided with a stainless steel punching plate 6 that is connected to an electrostatic field generating power source 4 to form an electrostatic field. For this reason, an insulating space 71 surrounded by an insulator 7 is formed at the bottom of the food storage chamber 2, and the punching plate 6 is installed in the insulating space 71. In this example, a plastic plate is provided on the front side, and plastic scissors are provided on the back side, both sides, and the bottom side. In particular, the insulators on the bottom are supported by insulators 72 as shown in FIG.

  The punching plate 6 installed at the bottom of the food storage chamber 2 is connected to the electrostatic field generating power source 4 through a wiring box 5. The wiring box 5 is provided with an electrode 51 connected from the electrostatic field generating power source 4 through a high voltage cable 41. An application chain 52 is attached to the electrode 51 and hung on the punching plate 6 as shown in FIG. 5B, thereby applying a negative electrostatic force due to electrostatic induction to the punching plate 6 to create a negative electrostatic band. The

The electrostatic field generating power source 4 may be constantly operated or may be intermittently stopped outside business hours. Therefore, in this example, the electrostatic field generating power source 4 is built in the control box 43 as shown in FIG. 1B, and the operation time can be controlled by the timer 44 provided in the control box 43. For example, the period from the end of business to the start of business is a case of stopping for 30 minutes every 2 hours, and can be controlled in conjunction with the operation of a cooling device that cools the food storage chamber 2.

An example of the food preservation showcase concerning the present invention is shown, (a) is a front view, (b) is a back view, and (c) is a top view. Example 1 The state which installed the punching board in the bottom part of a food preservation room is shown, (a) is the top view which cut down a part, (b) is a rear view of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Food preservation showcase 2 Food preservation room 21 Door 22 Safety switch 3 Machine room 4 Electrostatic field generating power supply 41 High voltage cable 42 Door sensor cable 43 Control box 44 Timer 5 Wiring box 51 Electrode 52 Application chain 6 Punching board 7 Insulator 71 Insulation space 72

Claims (4)

  In a refrigerated storage device comprising a food storage chamber having at least a front surface formed of a transparent body and a cooling device for cooling the food storage chamber, an insulating space constituted by an insulator disposed on a bottom portion of the food storage chamber and the periphery thereof In addition, a food storage showcase, which is connected to an electrostatic field generating power source and is provided with a conductive plate having a large number of through holes.   The electrostatic field generating power source is separate from the refrigerated storage device, and the refrigerated storage device includes a wiring box provided with an electrode connected to the electrostatic field generating power source, and the electrode and the conductive plate are connected. Food preservation showcase.   The food storage showcase according to claim 2, wherein the electrostatic field generating power source and the conductive plate are connected by hanging an application chain connected to the electrostatic field generating power source on the conductive plate.   The food storage showcase according to claim 1, further comprising a switch for shutting off and connecting the electrostatic field generating power source and the conductive plate in conjunction with the open / close door of the food storage chamber.

Images