JP2001215074A - Refrigerator for business use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator for business use which is able to keep freshness of food during storage for a long period of time. SOLUTION: A refrigerator compartment 10 consists of a three-layer structure in which an insulating layer 3' is disposed between an outer wall 1' consisting of stainless steel plates and an inner wall 2' constituted with resin plates. A shelf support 20 made of a conductive material is disposed on the inner wall 2'. Further, metallic shelf plates 19 are fixed to the shelf support 20. The shelf support 20 is connected to one end of an A.C. constant current high-voltage power supply 21 of which the other end is connected to the outer wall 1' so as to generate a magnetic field (e) between the outer wall 1' and the shelf plates 19. Thus, by concentrating the electric field (e) by static electricity on the shelf plates 19, freshness of food in the compartment is maintained for a long period of time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial refrigeration and freezer that can be stored for a long period of time while maintaining the freshness of food.

[0002]

2. Description of the Related Art There is a commercial refrigeration (frozen) refrigerator which generates an electric field due to static electricity in a refrigerator so that food can be stored for a long period of time while keeping freshness.

In this refrigerator, an electrode is provided in a refrigerator, and this electrode is connected to a high-voltage AC constant-current power supply (a so-called electrostatic generating transformer).
And the other is connected to the case to discharge static electricity from the high-voltage power supply into the storage, thereby creating an electric field due to the static electricity discharged into the storage. The electric field created in this way acts on the moisture of the food stored in the refrigerator, breaking up the water clusters and strengthening the binding between water and proteins. Therefore, the meat and seafood preserved in the refrigerator are kept fresh for a long time,
Vegetables and fruits can be kept fresh for a long time.

At the same time, ozone is generated at the same time to suppress the generation of bacteria and mold, and to stop spoilage, so that the food can be stored for a long period of time while keeping its freshness.

[0005] By the way, as shown in FIG. 8, the wall structure of the conventional commercial refrigerator has an outer wall 1 and an inner wall 2 formed of a stainless steel plate, and a heat insulating layer 3 is provided between the outer wall 1 and the inner wall 2. It has a structure in which an electrode 5 is provided on the inner wall 2 via an insulating material 4.

[0006]

However, in the above-mentioned wall structure, when insulation between the electrode and the inner wall is reduced due to moisture, dew, or icing in the refrigerator, for example, electric charges leak to the inner wall. As shown in FIG. 9, an electric field e is formed between the inner wall 2 and the outer wall 1. As described above, when an electric field e is generated between the inner wall 2 and the outer wall 1, a predetermined electric field e due to static electricity cannot be formed in the refrigerator, and the freshness of the food in the refrigerator cannot be maintained for a long time. Occurs.

An object of the present invention is to provide a commercial refrigeration (freezing) refrigerator which can keep freshness for a long period of time.

[0008]

In order to solve the above-mentioned problems, according to the present invention, a refrigerator compartment is formed by a panel having a three-layer structure in which a heat insulating layer is provided between an outer wall made of a stainless steel plate and an inner wall made of a resin plate. A shelf receiver made of a conductive material is provided on the resin layer on the inner wall of the refrigerator compartment, and the shelf receiver is connected to one of an AC constant-current high-voltage power supply, and the other is connected to a stainless steel outer wall. The structure in which the shelf board to be mounted on was formed of a conductor was adopted.

By adopting such a configuration, the inner wall of the panel forming the refrigerator compartment has a three-layer structure made of a resin plate, so that the inner wall becomes a complete insulating layer. Therefore, when a shelf receiver formed of a conductive material is provided on the inner wall, and the shelf board placed on the shelf receiver is formed of a conductor, the shelf board formed of the conductor can be used as an electrode. At this time, since the periphery of the shelf is an insulating layer made of a resin plate, the electric field concentrates on the shelf serving as an electrode, and an effective electric field can be applied to food on the shelf.

At this time, by adopting a structure in which the refrigerating room constituted by the panel is assembled,
It can be easily brought to the installation site or manufactured on site.

Further, by adopting a configuration in which the refrigerating compartment is a freezing compartment, the present invention can be applied to a commercial freezer.

[0012]

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

The commercial refrigerator of this embodiment shown in FIG. 1 is of an assembling type, and as shown in FIG.
And a door panel 11 and a DC unit 12.

The refrigerator compartment 10 is, as shown in FIG.
It comprises side panels 13a, 13b, a back panel 14, a ceiling panel 15, a bottom panel 16 and a front frame 17, on which a drain pan 18 and a shelf board 19 are set.

Reference numerals 40 and 50 in the figure denote a front cover and a side cover for hiding the DC unit 12.

As shown in FIGS. 4 and 5, the side panels 13a and 13b, the rear panel 14, the ceiling panel 15, the bottom panel 16 and the door panel 11 are made of a stainless steel outer wall 1 'and a resin plate. It has a three-layer structure in which a heat insulating layer 3 'is provided between the inner walls 2'.

At this time, the inner wall 3 'has excellent heat insulating properties,
In addition, a resin plate having high insulation properties is used, so that the insulation properties can be improved and the weight can be reduced.

Incidentally, the resin plate of the inner wall 2 'may be mixed with an antibacterial material to provide antibacterial properties.

On the other hand, shelf supports 20 are provided on the side panels 13a, 13b and the rear panel 14, as shown in FIGS. The shelf receiver 20 is made of a conductive metal having a bar-shaped base provided with engaging projections for supporting the shelf board 19 at predetermined intervals, and is mounted on a resin plate of the inner wall 2 '. The shelf support 20 is connected to a DC unit 12 described later.
Are connected to the DC constant-current high-voltage power supply 21 of FIG.

The ceiling panel 15 is provided with a mounting hole 22 substantially at the center so that the DC unit 12 is mounted.

The DC unit 12 has a compressor, a condenser, a receiver tank,
The controller is arranged, and the cooler 2
4 is attached to the ceiling panel 15 with the cooler 24 facing down, so that the cooler 24 projects into the refrigerator. A drain pan 18 is disposed directly below the cooler 24.

The drain pan 18 is attached to the ceiling panel 15 and the back panel 14 and is not shown in the drawing. For example, the drain pan 18 is connected to a drain pipe provided on the back panel 14 to store drain water for defrosting. It can be discharged outside.

As described above, the DC unit 12 is provided with an AC constant-current high-voltage power supply 21. Terminals connected to the power supply 21 are provided, for example, on the lower surface of the plate 23 so that Can be connected to.

The front frame 17 is composed of four small frames made of resin, and the four door panels 11 are attached to the small frames by hinges.

The center support of the front frame 17 has a shelf support 20
Are provided to support the shelf 19 as shown in FIG.

The shelf board 20 is made of a conductive metal, and is placed on the shelf receiver 20 so as to have the same potential as the shelf receiver 20.

Each of the panels 13 configured as described above
At the ends of the a, 13b to 16 are provided either a well-known rotary hook f or a slit s for engaging the hook, and the engaging panels 13a, 13b to 1 are provided.
The end portions of Nos. 6 are aligned with each other, and the rotary hook f is turned with a screwdriver so that the hook protrudes and engages with the slit s. For example, the assembly can be easily performed as follows.

That is, first, the bottom panel 16 is arranged at the installation location. Adjuster bolts are provided on the bottom panel 16, and the bolts are adjusted so as to be horizontal without play.

Next, the left side panel 1 is attached to the bottom panel 16.
Attach 3a. At this time, the rear portion of the bottom panel 16 and the rear portion of the left side panel 13a are fastened with the rotary hook f so that no step is formed.

When the attachment of the left side panel 13a is completed, the back panel 14 and the right side panel 13b are attached to the bottom panel 16. At this time, the rotary hook f is tightened so that a step or a gap is not generated at the panel joint. After the left and right side panels 13a, 13b and the rear panel 16 are assembled, the ceiling panel 15 is attached.
At this time, the ceiling panel 15 is placed on the joint with the ceiling panel 15 by attaching a packing. Next, the drain pan 18 is attached to the ceiling panel 15 and the back panel 14 (see FIG. 4), and the front frame 17 is attached.

When the refrigerator compartment 10 is assembled in this way, DC
The unit 12 is attached to the ceiling panel 15. And
Connect the drain pipe in the refrigerator to the drain pan 18
The door panel 11 is attached to 7.

Finally, the power supply and the ground are connected, and, of course, the connection between the AC constant-current high-voltage power supply 21 and the shelf support 20 is also performed. When the decoration such as the front cover 40, the side plate 50, and the angle is attached, the refrigerator is completed as shown in FIG. 1 and has an internal structure as shown in FIG.

[0033] Since it is of the assembling type, it can be easily brought into the site and installed. Moreover, since the inner wall 2 'is made of a resin plate, the weight of each panel can be reduced, and assembly can be simplified.

The assembled refrigerator has a shelf board 19
When power is supplied, as shown in FIG.
The shelf plate 19 supported by the electrodes serves as an electrode.
As shown in FIG. 7, an electric field e is formed in the refrigerator. At this time,
Since the inner wall 2 'around the shelf 19 is insulated, the shelf 1
The electric field e concentrates on the food 9 and a predetermined static electricity can be applied to the food on the shelf 19.

At this time, for example, even if moisture adheres between the shelf support 20 and the inner wall 2 ', or if dew condensation occurs, the inner wall 2' is made of a resin plate, so that the electric charge does not leak to the inner wall 2 '. In any case, an electric field e can be generated between the shelf 19 and the outer wall 1 '. As a result, an electric field due to predetermined static electricity is applied to the food in the refrigerator, and freshness can be maintained for a long period of time.

In the embodiment, the refrigerator has been described, but the present invention is not limited to this. With a similar configuration,
It is clear that the present invention can be applied to a freezer having a lower cooling temperature, and the operation and effect are the same, and therefore, the description thereof is omitted.

[0037]

According to the present invention, a refrigeration (freezing) chamber is formed by a panel having a three-layer structure in which a heat insulating layer is provided between an outer wall made of a stainless steel plate and an inner wall made of a resin plate. Thereby, the electric field due to the static electricity can be applied to the food in the refrigerator to maintain the freshness for a long time.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is an exploded perspective view of the embodiment.

FIG. 3 is an exploded perspective view of the embodiment.

FIG. 4 is a longitudinal sectional view of the embodiment.

FIG. 5 is a cross-sectional view of the embodiment.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a diagram illustrating the operation of the embodiment.

FIG. 8 is a diagram illustrating the operation of a conventional example.

FIG. 9 is a diagram illustrating the operation of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 'Outer wall 2' Inner wall 3 'Heat insulation layer 10 Refrigerator room 11 Door panel 12 DC unit 13a Side panel 13b Side panel 14 Back panel 15 Ceiling panel 16 Bottom panel 17 Front frame 19 Shelf board 20 Shelf support 21 AC constant current high voltage power supply

Claims (3)

[Claims] 1. A refrigerator having a three-layer structure in which a heat insulating layer is provided between an outer wall made of a stainless steel plate and an inner wall made of a resin plate, and a conductive material is formed on the resin layer on the inner wall of the refrigerator. A service characterized by providing a formed shelf support, connecting the shelf support to one of an AC constant-current high-voltage power supply, connecting the other to a stainless steel outer wall, and forming a shelf board to be placed on the shelf support with a conductor. Refrigerator. 2. The commercial refrigerator according to claim 1, wherein the refrigerator formed by the panel is assembled. 3. A commercial freezer using the refrigerator according to claim 1 or 2 as a freezer.