JP2000046462A - Heat insulating box body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat insulating box body provided with a strong partition plate comprising a single part for facilitating processing, and heating by sufficiently shutting off the heat entering the inside of a room. SOLUTION: In a heat insulating box body comprising a box body main body provided with a plurality of rooms wherein the inside thereof partitioned by a partition plate 1 is lower than room temperature, and a plurality of opening and closing doors or the like provided corresponding to each room, an opening part is formed on the door side end part of the partition plate 1 by a partition wall 10 and upper and lower plates 8 and 9, a design plate 15 having a leg-shaped end side 15c on the rear side is installed in the front of this opening part for forming a void 12 between the design plate 15 and the partition plate 1, and a radiation pipe 19 is arranged in the void 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition structure of a heat insulating box such as a refrigerator having a plurality of chambers, and more particularly to a partition plate for heating a design plate with which a door abuts to prevent dew condensation. The present invention relates to a heat-insulating box provided with:

[0002]

2. Description of the Related Art A heat insulating box such as a refrigerator having a plurality of chambers is provided with a partition plate which is a resin molded product provided with a heat insulating material inside, and a space between each chamber is controlled by temperature or humidity depending on the storage contents of food or the like. The environment is divided into different rooms. By installing this partition plate, the heat insulating box is strengthened. In particular, the design plate on the opening side of the box body has a U-shape having a design surface and an edge bent at a right angle to the design surface. Is formed, and its edges are arranged below the outer shell surface layer of the partition plate and fixed so as to be concealed, thereby improving the strength of the heat insulating box.

[0003] In addition, the design plate is required to be a magnetic material to which a magnet provided inside the packing is adsorbed in order to keep the packing provided on the door and the box body in a sealed state. In addition, at the same time, since the effect on the strength improvement of the heat insulating box is great, a low-priced, high-strength painted steel plate is used for the design plate.

However, since the design plate has a portion exposed to the outside of the room, it is made of a steel plate having excellent heat conductivity.
At the edge of the design plate arranged near the outer shell surface of the partition plate, a heat flow is generated from the outdoor high temperature region to the indoor low temperature region.
As a result, the heat insulation performance of the heat insulating box is reduced, and the temperature of the design plate itself is reduced to the outside air (the atmosphere in which the heat insulating box is installed).
Drops below the dew point of, causing condensation.

In order to solve such a problem, for example, as shown in FIG. 7 disclosed in Japanese Patent Application Laid-Open No. 4-103398, an air gap provided on the front surface of a partition plate 31 provided with a heat insulating layer 30 is disclosed. A heat-dissipating pipe 32 of a refrigeration cycle is arranged in the inside, and this heat-dissipating pipe 32 is pressed against a design plate 35 by a flexible heat insulating material 34 via a heat storage layer 33, and the heat causes the temperature of the design plate 35 to exceed the dew point. Raised to prevent condensation. However, the design plate 35 is a partition plate 36 in the room.
The edge 35a is disposed near the surface of the
5, while the dew condensation is prevented by increasing the temperature of the end 3
The heat flow that travels through 5a and enters the room increases, and the heat insulating performance of the heat insulating box decreases.

For this reason, the prior arts disclosed in Japanese Utility Model Laid-Open No. 57-58995 and Japanese Utility Model Laid-Open No. Sho 57-79383 disclose the edge of a design plate in a room with low heat conductivity.
For example, by using a resin molded product, the heat flow transmitted to the inside and outside of the room is reduced. Further, in the prior art disclosed in Japanese Utility Model Laid-Open No. 57-177087, the entire structure of the design plate is formed of a resin molded product, and further, the design of the resin molded product is performed in order to ensure the hermeticity of the box body and the door. A magnetized tape is provided on the door, and the magnetic tape is brought into close contact with a magnet provided in the packing of the door.

[0007]

According to the heat insulating box having the partition plate constructed as described above, the design plate is easily deformed because the edges of the design plate are formed of different articles, and the strength of the box is reduced. Lower. In addition, the design plate is complicated by using a plurality of molding methods such as bending of a sheet metal and injection molding of a resin on an edge, and also requires assembly to unite them, so that the processing is complicated. It is.

In addition, since the radiating pipe of the refrigeration cycle is used for heating the design plate, the amount of heat required for heating does not change, but a heat insulating structure is applied to the bent portion of the design plate to enter the room. Since the heat flow is suppressed,
The temperature of the design plate rises more than necessary. For this reason, the temperature of the edge increases due to the heat transfer from the surface of the design plate, and the amount of heat traveling from this portion toward the room increases, thereby reducing the heat insulating properties of the heat insulating box.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is constituted by a single component, is easy to process, and can sufficiently heat heat entering a room. An object of the present invention is to obtain a heat-insulating box having a strong partition plate.

[0010]

According to the present invention, there is provided a heat insulating box comprising a box body having a plurality of chambers partitioned by a partition plate and having an interior lower than room temperature; An insulated box body consisting of a door, etc., with an opening formed by a partition wall and upper and lower plates at the door-side end of the partition plate, and a design plate having a leg-like edge at the rear side at the front of the opening. Then, a gap was formed between the design plate and the partition plate, and a heat radiation pipe was disposed in the gap. In addition, the gap was filled with a heat insulating material.

[0011] Further, the gap is formed by a first gap formed between the partition wall of the partition plate and the leg end of the design plate, and the leg upper and lower plates of the partition plate and the leg end of the design plate. And a second gap formed between the first gap and the first gap, a heat-dissipating pipe is provided, and the first gap is filled with a flexible heat insulating material, and the second gap is filled with a hard heat insulating material. did. Further, the heat radiating pipe was formed to have a length such that the surface temperature of the design plate was set near room temperature. Further, the heat radiating pipe was disposed in contact with the front portion of the design plate, or the front portion and the leg-like edge.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a perspective view of Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of a part a in FIG. 1, and FIG. 4, Fig. 5
7 is an operation explanatory diagram of the first embodiment. FIG. In the figure, reference numeral 1 denotes a partition plate for vertically dividing a box body of a refrigerator, which is a heat insulating box, and reference numerals 2 and 3 denote freezing and refrigerating compartments provided at the upper and lower portions of the partition plate 1 and having front openings. As shown in FIG. 4, a freezing door 5 and a refrigerating door 6 attached by hinges 4 are respectively attached to the openings so as to be openable and closable.
So that it is in close contact with the front of the camera.

The partition plate 1 is composed of an outer shell 7 of a resin molded product having an upper plate 8 and a lower plate 9, and is erected between the upper plate 8 and the lower plate 9 near the front end of the partition plate 1. A partition filled with a heat insulating material 11 is formed at the back of the partition 10, and a gap 12 having an open front surface is formed on the door side of the partition 10. Reference numeral 13 denotes a step provided at the end of the upper plate 8 and the lower plate 9 of the partition plate 1, and a step is formed toward the inner wall of the partition plate 1. Reference numeral 14 denotes a locking portion protruding in the vicinity of the gap 12 side of the partition wall 10 in the up-down direction and protruding toward the opening.

Reference numeral 15 denotes a design plate which is attached along the width direction of the gap portion 12 so as to cover the gap portion 12. At a position (a position corresponding to the locking portion 14 of the partition plate 1) at a sufficient distance from the bent portion,
The front part 15a and the front part 15a
And a pair of leg-like sides 15c perpendicular to the front surface 15a. The protrusions 15b are formed in a substantially U-shaped cross section. The bent portion of the end 15b forms a fixed portion 15d.

The design plate 15 is fixed to a fixing portion 15d.
To the step 13 of the partition plate 1 and
5c is brought into contact with the locking portion 14 of the partition plate 1, the front portion 15a is disposed so as to cover the opening of the gap portion 12, and both ends in the width direction of the design plate 15 are connected to the refrigerator. By fixing with the screw 16, the partition plate 1 is firmly attached to the front surface. Thus, the gap portion 12 is formed by the partition wall 1 of the partition plate 1.
0, a first gap portion 17 surrounded by the front portion 15a of the design plate 15 and the leg-like edge 15c, and the partition wall 1 of the partition plate 1.
The second gap portion 18 is surrounded by the lower plate 8, the upper and lower plates 8, 9 and the leg-like side 15c of the design plate 15.

Reference numeral 19 denotes a heat radiating pipe which constitutes a part of a refrigeration cycle disposed in the width direction of the first gap portion 17 and is disposed in contact with the inner wall of the front surface portion 15a of the design plate 15 and has a low temperature state. The amount of heat flowing out of the design plate 15 toward the chambers 2 and 3 is compensated to prevent the dew point of the outside air from falling below the dew point. In addition,
The heat radiating pipe 19 is a heat radiating pipe having a reduced length.
As shown in FIG. 3, the length of the heat dissipation pipe 32 is shorter than that of the conventional heat dissipation pipe 32. For example, the length is designed so that the surface temperature of the design plate 15 becomes close to room temperature. The heat radiating pipe 19 suppresses the amount of heat radiated, and suppresses the amount of heat that enters the chambers 2 and 3 through the packing of the upper and lower doors 5 and 6 that contact the design plate 15 and the surface of the outer shell 7 of the partition plate 1. ing.

Reference numeral 20 denotes a flexible heat insulating material filled in the first gap portion 17, and the heat radiating pipe 19 is connected to the front portion 15 of the design plate 15.
Pressing in direction a. Reference numeral 21 denotes a hard heat insulating material filled in the second gap portion 18, which is made of hard urethane foam, foam ceramics or the like having sufficient rigidity, and deforms the partition plate 1 and the design plate 15 due to deformation of the heat insulating box. Is suppressed.

The operation of the first embodiment configured as described above will be described. First, the heat transfer caused by the heat radiating pipe 19 will be described. Since the front surface 15a of the design plate 15 is in contact with the heat radiating pipe 19, the heat transfer efficiency is improved, and the temperature of the design plate 15 is reduced by the heat from the heat radiating pipe 19. Raises above the dew point to prevent condensation. At this time, the leg-shaped edge 15c formed by folding the design plate 15 is connected to the outer shell 7 of the partition plate 1.
Are arranged at a sufficient distance from the upper plate 8 and the lower plate 9, a part of the heat flow passes through the outer shell 7 of the partition plate 1 as the temperature of the design plate 15 rises. And does not enter the freezer compartment 2 or the refrigerator compartment 3. Moreover, the second gap 18
The second gap portion 1 is formed by the hard heat insulating material 21 filled in the second gap portion 1.
No heat transfer due to convection occurs in the second gap 18 and the second gap 18
The heat flow through the is reduced.

In this way, the leg portions 15c of the design plate 15 and the upper and lower plates 8 and 9 of the partition plate 1 are formed by the second gap portion 18.
Is insulated, and the heat flow moving to the freezer compartment 2 and the refrigerator compartment 3 is reduced. According to the conventional heat radiating pipe 32, the temperature of the design plate 15 is increased by an amount corresponding to the reduced heat flow. However, in the first embodiment, since the heat radiating pipe 19 having a shorter length is used, the heat radiating amount is reduced. Suppressed, design board 15
The amount of heat entering the room through the packings of the doors 5 and 6 that come into contact with the door and the surface of the outer shell 7 of the partition plate 1 is suppressed, and the surface temperature of the design plate 15 becomes close to the conventional dew point.

Next, the deformation of the partition plate 1 will be described.
As shown in FIG. 4, the load is applied to the hinges 4 attached to support the upper and lower doors 5, 6, and the refrigerator is twisted by the moment in the direction of the arrow, that is, the moment on the near side and the opposite side of the hinge, and is broken. Since the partition plate 1 is deformed as shown in FIG. Accordingly, as shown in FIG. 2, the first and second gaps 17 and 18 are originally required.
Has a gap in which the upper and lower plates 8 and 9 of the partition plate 1 and the leg-like end 15c of the design plate 15 have a parallel positional relationship.
As shown in FIG. 5, a force acts in a direction in which the deformation of the displacement is to occur. However, the second gap 18
Since the inside is filled with a hard heat insulating material 21, the second gap 18 formed by the leg-like end 15c of the design plate 15 and the upper and lower plates 8, 9 of the partition plate 1 is compressed during deformation. This is prevented by the heat insulating material 21 which is hard.

According to the first embodiment, the temperature of the design plate 15 is raised above the dew point, and dew condensation can be prevented. In addition, part of the heat flow caused by the temperature rise of the design plate 15 is caused by the outer shell 7 of the partition plate 1.
Does not penetrate into the freezer compartment 2 or the refrigeration compartment 3. Further, the heat flow through the second gap 18 is further reduced. Further, since the heat radiating pipe 19 having a reduced length is used, the amount of heat radiated is suppressed, and the surface temperature of the design plate 15 can be set near the same dew point as the conventional one. Of the doors 5 and 6 and the amount of heat entering the chambers 2 and 3 through the surface of the outer shell 7 of the partition plate 1 can be suppressed. Furthermore, even if the partition plate 1 bends and bends, the heat insulating material 21 prevents the deformation and the strength of the refrigerator is improved.

Embodiment 2 FIG. 6 is a longitudinal sectional view of Embodiment 2 of the present invention. In the first embodiment, the steps 1 are attached to the ends of the upper plate 8 and the lower plate 9 of the partition plate 1.
3 and the locking portion 14 is provided on the side of the gap 12 of the partition wall 10, but in the second embodiment, the step portion 13 and the locking portion 1 are provided.
The design plate 15 is attached to the partition plate 1 without providing the cover 4. That is, the fixing portion 15d of the projecting end portion 15b of the design plate 15 abuts on the inner wall side of the tip portion of the upper and lower plates 8, 9 of the partition plate 1 as it is, and the end of the leg-like edge 15c is connected to the partition wall 10 The surface is directly in contact with the surface.

In the first embodiment, the heat radiating pipe 19
Is disposed in contact with only the front portion 15a of the design plate 15,
In the second embodiment, not only the front portion 15a of the design plate 1 but also the leg-like side 15c is brought into contact with the design plate 1, and the heat radiating pipe 19 is pressed by the flexible heat insulating material 20 provided in the partition plate 1. Thus, the front surface 15a and the leg-like side 15c of the design plate 15 are in close contact with each other. Other configurations and operations are the same as those described in the first embodiment, and a description thereof will not be repeated.

According to the second embodiment, the number of contact portions between the heat radiating pipe 19 and the design plate 15 is increased.
The heat transfer efficiency from 9 to the design plate 15 is improved. For this reason, the surface of the design plate 15 can secure a dew point or more even if the heat radiating pipe 19 is shortened similarly to the case shown in FIG. 3 of the first embodiment.

[0025]

As is apparent from the above description, the present invention relates to a box body having a plurality of chambers partitioned by a partition plate and having an interior lower than room temperature, and a plurality of opening / closing units provided for each chamber. An insulated box body consisting of a door, etc., with an opening formed by a partition wall and upper and lower plates at the door-side end of the partition plate, and a design plate having a leg-like edge at the rear side at the front of the opening. Since a gap is formed between the design plate and the partition plate, and a heat radiating pipe is disposed in the gap, heat for preventing dew condensation on the design plate flows into the room through the outer shell of the partition plate. Can be suppressed, and the heat insulating performance of the heat insulating box can be improved.

Further, since the heat insulating material is filled in the gap, the heat entering the room through the partition plate can be further blocked, and the deformation of the heat insulating box can be suppressed. Further, a gap is formed between a first gap formed between the partition wall of the partition plate and the leg end of the design plate, and between the upper and lower plates of the partition plate and the leg end of the design plate. And the first gap is filled with a heat insulating pipe, and the first gap is filled with a flexible heat insulating material, and the second gap is filled with a hard heat insulating material. The heat that enters the room through the partition plate can be further blocked, and the deformation of the heat insulating box can be suppressed.

Further, since the heat radiating pipe is formed to have such a length that the surface temperature of the design plate is set to around room temperature, the amount of heat flowing into the room is reduced, so that the temperature of the design plate is prevented from rising, and the heat from other than the edges is prevented. It is possible to improve the heat insulating performance of the heat insulating box by suppressing intrusion. In addition, the heat dissipation pipe is placed on the front of the design plate,
Alternatively, since the arrangement is made in contact with the front portion and the leg-like end, heat transfer from the heat radiating pipe can be made smooth, and the temperature of the design plate can be efficiently raised.

[Brief description of the drawings]

FIG. 1 is a perspective view of Embodiment 1 of the present invention.

FIG. 2 is a longitudinal sectional view of a part a in FIG.

FIG. 3 is an explanatory diagram of FIG. 1;

FIG. 4 is an operation explanatory diagram of the first embodiment.

FIG. 5 is another operation explanatory view of the first embodiment.

FIG. 6 is a longitudinal sectional view of a main part according to a second embodiment of the present invention.

FIG. 7 is a longitudinal sectional view showing an example of a conventional heat insulating box.

[Explanation of symbols]

1 partition plate, 2 freezer compartment, 3 refrigerator compartment, 5 freezer door, 6
Refrigerated door, 7 outer shell, 8 upper plate, 9 lower plate, 10 partition wall, 12 void, 15 design plate, 15a front part, 1
5b Overhanging end, 15c Leg side, 17 First gap, 18 Second gap, 19 Heat dissipation pipe, 20 Flexible heat insulator, 21 Hard heat insulator.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akira Nishizawa 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Co., Ltd. (72) Kunihiko Kaga 2-3-2 Marunouchi, Chiyoda-ku, Tokyo 3 Rishi Electric Co., Ltd. F term (reference) 3L102 JA01 LB13 LC29 LC30 LC32 LE01 MA02 MB06 MB31

Claims (5)

[Claims] 1. A heat-insulating box body comprising a plurality of chambers partitioned by a partition plate and having a plurality of interiors lower than room temperature, and a plurality of opening / closing doors provided for each chamber. An opening is formed by a partition wall and upper and lower plates at the door side end, and a design plate having a leg-like edge on the rear side is attached to the front of the opening, and between the design plate and the partition plate. A heat insulating box, wherein a void is formed, and a heat radiating pipe is disposed in the void. 2. The heat insulating box according to claim 1, wherein the gap is filled with a heat insulating material. 3. A first gap formed between a partition wall of a partition plate and a leg end of a design plate, a leg above and below the partition plate and a leg end of the design plate. The second formed between the side
Wherein a heat radiation pipe is disposed in the first gap portion and filled with a flexible heat insulating material, and the second gap portion is filled with a hard heat insulating material. Item 4. An insulated box according to Item 2. 4. The heat radiation pipe is formed to have a length such that the surface temperature of the design plate is set near room temperature.
Or the heat insulating box of 2. 5. The heat-insulating box according to claim 1, wherein the heat-dissipating pipe is disposed so as to be in contact with the front part of the design plate or the front part and the leg-shaped edge.