JP3455904B2 - Commercial refrigerator - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art There are commercial refrigerating (freezing) refrigerators in which electric fields are generated by static electricity so that foods can be stored for a long period of time while maintaining their freshness.

This refrigerator is provided with an electrode inside the refrigerator, and this electrode is used as a high-voltage AC constant current power source (so-called electrostatic generation transformer).
One side is connected to the other side and the other side is connected to the case to discharge static electricity from the high-voltage power source into the refrigerator and create an electric field due to the static electricity discharged into the refrigerator. The electric field thus created acts on the water content of the food stored in the refrigerator to subdivide the water clusters and strengthen the bond between the water and the protein. Therefore, the meat and seafood stored in the refrigerator can be kept fresh for a long time,
Vegetables and fruits can keep their freshness for a long time.

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

By the way, in such a conventional wall structure of a commercial refrigerator, as shown in FIG. 8, an outer wall 1 and an inner wall 2 are formed of a stainless plate, and a heat insulating layer 3 is provided between the outer wall 1 and the inner wall 2. The structure is provided, and the electrode 5 is provided on the inner wall 2 via the insulating material 4.

[0006]

However, in the wall structure as described above, when the insulation between the electrode and the inner wall is lowered due to moisture, dew condensation or freezing in the refrigerator, for example, electric charge leaks 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 the electric field e is generated between the inner wall 2 and the outer wall 1, the 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.

[0007] Therefore, an object of the present invention is to provide a commercial refrigerating (freezing) refrigerator which can be kept fresh for a long period of time.

[0008]

In order to solve the above-mentioned problems, according to the present invention, a side surface pad having a three-layer structure in which a heat insulating layer is provided between an outer wall made of a stainless plate and an inner wall made of a resin plate is provided.
Panel, back panel, ceiling panel, bottom panel edge
Of the hook or the slit that engages with the hook.
Provide either one and hook the panel into the slit at the end
To engage the refrigerator to assemble the refrigerator compartment
, A shelf support made of a conductive material is provided on the resin layer on the inner wall of the refrigerating compartment, the shelf support is connected to one of the AC constant current high voltage power supplies, the other is connected to the stainless steel outer wall , and the shelf support is The shelf board to be placed on is made of a conductive material.

By adopting such a structure and adopting a three-layer structure in which the inner wall of the panel forming the refrigerating compartment is made of a resin plate, the inner wall becomes a complete insulating layer. Therefore, if a shelf support made of a conductive material is provided on the inner wall and the shelf board to be placed on the shelf support is made of a conductive material, the shelf board made of the conductive material can be used as an electrode. At this time, since the periphery of the shelf plate is an insulating layer made of a resin plate, the electric field is concentrated on the shelf plate serving as an electrode, and an effective electric field can be applied to the food on the shelf plate.

[0010] At this time, by which the assembly <br/> Te expression by the panel, can be easily manufactured in bringing or site to the installation site.

Further, by adopting a structure in which the refrigerating room is a freezing room, it can be applied to a commercial freezer.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION 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 assembled type, and as shown in FIG.
And a door panel 11 and a DC unit 12.

Further, as shown in FIG. 3, the refrigerator compartment 10 is
It is composed of side panels 13a and 13b, a rear panel 14, a ceiling panel 15, a bottom panel 16 and a front frame 17, and a drain pan 18 and a shelf board 19 are set.

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

As shown in FIGS. 4 and 5, each of the side panels 13a and 13b, the rear panel 14, the ceiling panel 15, the bottom panel 16 and the door panel 11 includes an outer wall 1'made of a stainless plate 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 insulation properties,
Moreover, by using a resin plate having a high insulating property, it is possible to improve the insulating property and reduce the weight.

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

On the other hand, the side panels 13a and 13b and the rear panel 14 are provided with shelf holders 20 as shown in FIGS. The shelf receiver 20 is made of a conductive metal having a rod-shaped base provided with engaging projections for supporting the shelf plate 19 at predetermined intervals, and is attached on the resin plate of the inner wall 2 ′. The shelf receiver 20 is a DC unit 12 described later.
Since it is connected to the DC constant current and high voltage power source 21, the wiring for it is provided although not shown in the figure.

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

The DC unit 12 has a compressor, condenser, receiver tank,
The controller is arranged and the cooler 2 is provided on the lower surface of the plate 23.
4 is attached to the ceiling panel 15 with the cooler 24 facing downward so that the cooler 24 projects into the refrigerator. The drain pan 18 is arranged immediately below the cooler 24.

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

Further, the DC unit 12 is provided with the AC constant current high voltage power source 21 as described above, and the terminals connected to the power source 21 are provided on the lower surface of the plate 23, for example, and the wiring of the shelf receiver 20 is provided. You can connect with.

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

A shelf support 20 is mounted on the center column of the front frame 17.
Is provided to support the shelf plate 19, as shown in FIG.

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

Each of the panels 13 configured as described above
A well-known rotary hook f or a slit s that engages with the hook is provided at the end of each of the panels 13a, 13b to 13a.
The ends of 6 are aligned, the rotary hook f is rotated by a screwdriver to project the hook, and the slit s is engaged with the rotary hook f. For example, the assembly can be easily performed as follows.

That is, first, the bottom panel 16 is placed at the installation location. The bottom panel 16 is provided with an adjuster bolt, which is adjusted so that the bolt is level without any play.

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

After the left side panel 13a is attached, the rear 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 no step or gap is created at the panel joint. After assembling the left and right side panels 13a and 13b and the back panel 16, the ceiling panel 15 is attached.
At this time, packing is attached to the joint portion with the ceiling panel 15 and the ceiling panel 15 is placed. 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 refrigerating room 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, and set the front frame 1
Attach the door panel 11 to 7.

Finally, the power source and ground are connected, and of course, the AC constant current high voltage power source 21 and the shelf receiver 20 are also connected. When the front cover 40, the side plate 50, and decorations such as angles are attached, the refrigerator is completed as shown in FIG. 1 and has an internal structure as shown in FIG.

Since it is constructed as described above, 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 the assembling can be facilitated.

The assembled refrigerator has a shelf board 19
When the switch is attached and the power is turned on, as shown in FIG.
The shelves 19 supported by the electrodes serve as electrodes, for example, as shown in FIG.
As shown in, an electric field e is formed in the refrigerator. At this time,
Since the inner wall 2 ′ around the shelf board 19 is insulated, the shelf board 1
The electric field e is concentrated on 9 and a predetermined static electricity can be applied to the food on the shelf plate 19.

At this time, for example, even if water adheres between the shelf receiver 20 and the inner wall 2 ', or even if dew condensation occurs, the inner wall 2'is made of a resin plate, so that the electric charge is not leaked to the inner wall 2'. Nonetheless, in any case, the electric field e can be generated between the shelf plate 19 and the outer wall 1 '. As a result, a predetermined electric field is applied to the food in the refrigerator to keep the food fresh for a long time.

Further, although the refrigerator has been described in the embodiment, the invention is not limited to this. With a similar configuration,
It is obvious that the present invention can be applied to a freezer with a lowered cooling temperature, and the same effects are obtained, so the description thereof will be omitted.

[0037]

The present invention is constructed as described above, and the refrigerating (freezing) chamber is formed by the three-layer structure panel in which the heat insulating layer is provided between the outer wall made of the stainless plate and the inner wall made of the resin plate. As a result, the electric field due to static electricity can be applied to the food in the refrigerator to maintain the freshness for a long time.

[Brief description of 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 vertical 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 an explanatory diagram of the operation of the embodiment.

FIG. 8 is an operation explanatory view of a conventional example.

FIG. 9 is an operation explanatory view of a conventional example.

[Explanation of symbols]

1'outer wall 2'inner wall 3'insulation layer 10 Refrigerator 11 door panel 12 DC unit 13a side panel 13b side panel 14 Rear panel 15 ceiling panel 16 Bottom panel 17 Front frame 19 shelves 20 shelves 21 AC constant current high voltage power supply

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F25D 11/00 101

Claims (2)

(57) [Claims] 1. A side panel having a three-layer structure in which a heat insulating layer is provided between an outer wall made of a stainless plate and an inner wall made of a resin plate.
Edge of the front panel, back panel, ceiling panel, and bottom panel.
Tari hooks or slits that engage with the hooks
Make a gap and hook the panel into the slit at the end.
It can be engaged so that the refrigerator compartment can be assembled.
, A shelf support made of a conductive material is provided on the resin layer on the inner wall of the refrigerating compartment, the shelf support is connected to one of the AC constant current high voltage power supplies, and the other is connected to the stainless steel outer wall , and the shelf support is A commercial refrigerator characterized in that a shelf board to be mounted on the refrigerator is made of a conductor. 2. A commercial freezer in which the refrigerating room according to claim 1 is a freezing room.