JP3945553B2 - Heat insulation box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a partition part of a heat insulating box such as a refrigerator having a plurality of chambers, and more particularly relates to a heat insulating box provided with a partition plate that prevents condensation by heating a design plate with which a door abuts. Is.
[0002]
[Prior art]
A heat insulation box such as a refrigerator having a plurality of chambers is provided with a partition plate that is a resin molded product provided with a heat insulating material inside, and the chambers have different environments such as temperature and humidity depending on the contents stored such as food. It is partitioned and partitioned. By installing this partition plate, the heat insulation box is strengthened, especially the design plate on the opening side of the box body has a U-shape with the design surface and the edges bent at right angles to the design surface. The strength of the heat insulating box is improved by forming the cross section of the material and fixing its end side below the outer shell surface layer of the partition plate so as to be concealed.
[0003]
In addition, since the packing provided on the door and the box body are held in a hermetically sealed state, the design plate must be a magnetic body that attracts the magnet provided inside the packing. Since the influence on the strength improvement of the heat insulation box is great, a low-priced and high-strength coated steel plate is used for the design plate.
[0004]
However, since the design plate has a portion exposed to the outside, the design plate is made of a steel plate having excellent thermal conductivity, and the edge of the design plate arranged near the outer shell surface of the partition plate is exposed from the outdoor high-temperature area to the room. Heat flows toward the low temperature region. Thereby, while the heat insulation performance of a heat insulation box falls, the temperature of the design board itself falls below the dew point of external air (installation atmosphere of a heat insulation box), and dew condensation arises.
[0005]
To solve such a problem, for example, as in the prior art shown in FIG. 7 disclosed in Japanese Patent Application Laid-Open No. 4-103984, a freezing is provided in the gap provided in the front portion of the partition plate 31 provided with the heat insulating layer 30. A heat dissipating pipe 32 of the cycle is arranged, and the heat dissipating pipe 32 is pressed against the design plate 35 with a flexible heat insulating material 34 through the heat storage layer 33, and the temperature of the design plate 35 is raised above the dew point by this heat. Condensation is prevented.
However, since the design plate 35 has an end side 35a near the surface of the partition plate 36 in the room, the temperature of the design plate 35 rises to prevent condensation, but the design plate 35 is transmitted through the end side 35a. The heat flow that enters the room increases, and the heat insulating performance of the heat insulating box decreases.
[0006]
For this reason, in the prior art disclosed in Japanese Utility Model Laid-Open Nos. 57-58895 and 57-79383, the edges of the interior of the design plate are made of a low thermal conductivity, for example, a resin molded product. Thus, the heat flow transmitted to the inside and outside of the room is reduced. Further, in the prior art disclosed in Japanese Utility Model Publication No. 57-177087, the entire structure of the design board is formed of a resin molded product, and further, on the resin molded product to ensure the sealing of the box body and the door. Is provided with a magnetized tape, and the magnetic tape and a magnet provided in the door packing are brought into close contact with each other.
[0007]
[Problems to be solved by the invention]
According to the heat insulation box which has the partition plate comprised as mentioned above, since the edge of a design board is comprised with another article | item, it will be easy to deform | transform and box strength will be reduced. In addition, the design plate is complicated by using a plurality of molding methods such as sheet metal bending and resin injection molding at the end side, and requires complicated assembly to combine them. It is.
[0008]
In addition, since the heat radiation pipe of the refrigeration cycle is used for heating the design plate, the amount of heat required for heating does not change, but the heat flow that enters the room by applying a heat insulating structure to the bent part of the design plate etc. Since it is suppressing, the temperature of the design plate rises more than necessary. For this reason, the temperature of the edge side will increase due to heat transfer from the surface of the design plate, the amount of heat going from this part to the room will increase, and the heat insulation as a heat insulating box will be reduced.
[0009]
The present invention has been made to solve the above-described problems, and is composed of a single part, is easy to process, and is a strong partition capable of sufficiently blocking and heating the heat entering the room. It aims at obtaining the heat insulation box provided with the board.
[0010]
[Means for Solving the Problems]
Insulation box body according to the present invention is the cross-sectional hot box body that having a plurality of chambers partitioned by a partition plate, an opening is formed by the partition wall and the upper and lower plate to the door side end portion of the partition plate, the opening the front parts, fitted with a decorative plate radiating pipe to have a plurality of legs shaped end side toward the rear end portion is closely spaced, configuration as the first gap portion constituted by the leg-like end edge in the vertical partition plate Of the second gaps thus formed, at least the second gaps are filled with a hard heat insulating material.
[0011]
Moreover, the heat radiating pipe was brought into close contact with the front surface portion of the design plate or the front surface portion and the leg-shaped end side .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1
1 is a perspective view of Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of a part of FIG. 1, FIG. 3 is an explanatory view of FIG. 1, and FIGS. It is explanatory drawing. In the figure, 1 is a partition plate that divides the box body of the refrigerator, which is a heat insulation box, up and down, and 2 and 3 are freezing rooms and refrigeration rooms that are provided above and below the partition plate 1 and open at the front, As shown in FIG. 4, a freezing door 5 and a refrigeration door 6 attached to the opening of the door are removably attached to each of the openings, and each door 5, 6 is provided with a packing with a magnet inside, and the partition plate 1. It is made to adhere to the front of the.
[0013]
The partition plate 1 is constituted by an outer shell 7 of a resin molded product provided with an upper plate 8 and a lower plate 9, and a partition wall standing between the upper plate 8 and the lower plate 9 in the vicinity of the front end portion of the partition plate 1. 10, a space filled with a heat insulating material 11 is formed in the back of the partition wall 10, and a gap 12 having a front opening is formed on the door side of the partition wall 10. Reference numeral 13 denotes a step provided at the tip 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 an engaging portion protruding in the vicinity of the upper and lower sides of the partition wall 10 on the side of the gap portion 12 and protrudes toward the opening side.
[0014]
Reference numeral 15 denotes a design plate attached so as to cover the gap portion 12 along the width direction of the gap portion 12. After bending the flat plate up and down by 180 degrees, a part of the bent surface is further folded. It is bent 90 degrees inward at a position (a position corresponding to the locking portion 14 of the partition plate 1) spaced a sufficient distance from the bent portion, and is positioned above and below the front surface portion 15a and the front surface portion 15a. The projecting end portion 15b projecting in the shape of a double face and a pair of leg-shaped end sides 15c orthogonal to the front surface portion 15a are formed in a substantially U-shaped cross section. The bent portion forms a fixed portion 15d.
[0015]
And this design board 15 makes the fixing | fixed part 15d contact | abut to the step part 13 of the partition plate 1, and makes the edge part of the leg-shaped edge 15c contact | abut to the latching | locking part 14 of the partition plate 1, and is a front part. 15 a is arranged so as to cover the opening of the gap portion 12, and both end portions in the width direction of the design plate 15 are fixed to the refrigerator with screws 16, so that it can be firmly attached to the front surface of the partition plate 1. Thus, the gap portion 12 includes the first gap portion 17 surrounded by the partition wall 10 of the partition plate 1, the front surface portion 15 a of the design plate 15, and the leg-shaped end sides 15 c, the partition wall 10 of the partition plate 1, and the upper and lower plates. Secondly, a space 18 is defined by 8, 9 and the leg-shaped end 15 c of the design plate 15.
[0016]
Reference numeral 19 denotes a heat radiating pipe constituting a part of the refrigeration cycle arranged in the width direction of the first gap portion 17, arranged in contact with the inner wall of the front surface portion 15 a of the design plate 15, The amount of heat flowing out from the design plate 15 toward 3 is compensated to prevent the dew point of the outside air from being lowered. The heat radiating pipe 19 is a heat radiating pipe having a reduced length. As shown in FIG. 3, the heat radiating pipe 19 has a shorter length than the conventional heat radiating pipe 32. For example, the surface temperature of the design plate 15 is close to room temperature. It is shortened to such a length. With this heat radiating pipe 19, the amount of heat radiated is suppressed, and the amount of heat entering the chambers 2 and 3 through the packing of the upper and lower doors 5 and 6 contacting the design plate 15 and the surface of the outer shell 7 of the partition plate 1 is suppressed. ing.
[0017]
Reference numeral 20 denotes a flexible heat insulating material filled in the first gap portion 17, and presses the heat radiating pipe 19 toward the front surface portion 15 a of the design plate 15.
21 is a hard heat insulating material filled in the second gap 18 and is formed of hard foamed urethane, foamed ceramics or the like having sufficient rigidity, and the deformation of the partition plate 1 and the design plate 15 accompanying the deformation of the heat insulating box. It is trying to suppress.
[0018]
The operation of the first embodiment configured as described above will be described. First, heat transfer generated by the heat radiating pipe 19 will be described. Since the front surface portion 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 increased by the heat from the heat radiating pipe 19. It rises above the dew point and prevents condensation.
At this time, the leg-shaped end 15c formed by folding back the design plate 15 is disposed with a sufficient distance from the upper plate 8 and the lower plate 9 of the outer shell 7 of the partition plate 1. As the temperature rises, a part of the heat flow does not permeate the outer shell 7 portion of the partition plate 1 and enter the freezer compartment 2 or the refrigerator compartment 3. In addition, due to the hard heat insulating material 21 filled in the second gap 18, heat transfer due to convection does not occur in the second gap 18, and the heat flow through the second gap 18 is reduced.
[0019]
Thus, the second gap 18 insulates between the leg-shaped end 15 c of the design plate 15 and the upper and lower plates 8, 9 of the partition plate 1, and the heat flow rate that moves to the freezer compartment 2 and the refrigerator compartment 3 is increased. Decrease. According to the conventional heat radiating pipe 32, the temperature of the design plate 15 is raised by an amount corresponding to the reduced heat flow rate. However, since the heat radiating pipe 19 having a shorter length is used in the first embodiment, the heat radiation amount is reduced. The amount of heat entering the room through the packing of the doors 5 and 6 that contact the design plate 15 and the surface of the outer shell 7 of the partition plate 1 is suppressed, and the surface temperature of the design plate 15 is around the dew point equivalent to the conventional one. It becomes.
[0020]
Next, the deformation of the partition plate 1 will be described. As shown in FIG. 4, due to the load applied to the hinge 4 attached to support the upper and lower doors 5 and 6, the refrigerator is moved in the direction of the arrow, that is, the front side. Since the anti-hinge side moment is received and twisted and deformed as indicated by a broken line, the partition plate 1 is caused to bend. Therefore, originally as shown in FIG. 2, the first and second gaps 17 and 18 are in a positional relationship in which the upper and lower plates 8 and 9 of the partition plate 1 and the leg-shaped end 15c of the design plate 15 are parallel to each other. However, as shown in FIG. 5, a force acts in a direction in which a displacement deformation is caused.
However, since the hard insulating material 21 is filled in the second gap 18, the second gap 18 is formed by the leg-shaped side 15 c of the design plate 15 and the upper and lower plates 8, 9 of the partition plate 1 at the time of deformation. The compression of the two gaps 18 is received by the hard heat insulating material 21 to prevent deformation.
[0021]
According to the first embodiment, the temperature of the design plate 15 is raised to the dew point or higher, and condensation can be prevented. Further, a part of the heat flow accompanying the temperature rise of the design plate 15 does not penetrate the part of the outer shell 7 of the partition plate 1 and enter the freezer compartment 2 or the refrigerator compartment 3. Furthermore, 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 made near the dew point equivalent to the conventional one. The amount of heat entering the chambers 2 and 3 through the packing of the doors 5 and 6 and the surface of the outer shell 7 of the partition plate 1 can be suppressed. Furthermore, even if a behavior that causes bending deformation in the partition plate 1 is born, the hard heat insulating material 21 prevents the deformation and the strength of the refrigerator is improved.
[0022]
Embodiment 2
FIG. 6 is a longitudinal sectional view of the second embodiment of the present invention. In the first embodiment, the step portions 13 are provided at the ends of the upper plate 8 and the lower plate 9 of the partition plate 1, and the locking portions 14 are provided on the gap portion 12 side of the partition wall 10. The design plate 15 is attached to the partition plate 1 without providing the step portion 13 and the locking portion 14. That is, the fixed portion 15d of the projecting end portion 15b of the design plate 15 is brought into direct contact with the inner wall side of the top end portions of the upper and lower plates 8 and 9 of the partition plate 1 and the end portion of the leg-shaped end side 15c is connected to the partition wall 10. It is made to contact directly with the surface.
[0023]
In the first embodiment, the heat radiating pipe 19 is disposed in contact with only the front surface portion 15a of the design plate 15, but in the second embodiment, not only the front surface portion 15a of the design plate 1 but also the leg-shaped end 15c. The heat radiating pipe 19 is pressed by a flexible heat insulating material 20 provided in the partition plate 1 and is brought into close contact with the front surface portion 15a and the leg-shaped end side 15c of the design plate 15.
Other configurations and operations are the same as in the case shown in the first embodiment, and a description thereof will be omitted.
[0024]
According to the second embodiment, since the contact portion between the heat radiating pipe 19 and the design plate 15 is increased, the heat transfer efficiency from the heat radiating pipe 19 to the design plate 15 is improved. For this reason, even if the heat radiating pipe 19 is shortened as in the case shown in FIG. 3 of the first embodiment, the surface of the design plate 15 can ensure a dew point or more.
[0025]
【The invention's effect】
As apparent from the above description, the present invention provides a heat insulation box that having a plurality of chambers partitioned by a partition plate, the opening partition wall and by the upper and lower plates to the door side end portion of the partition plate forming a, in front of the opening, to have a plurality of legs shaped end side to the rear end side radiator pipe fitted with a closely spaced design plate, a first gap portion constituted by the leg-shaped end edges Among the second gaps constituted by the upper and lower partition plates, at least the second gap is filled with a hard heat insulating material, so that heat that prevents condensation on the design plate is generated in the partition plate. Inflow into the room through the outer shell can be suppressed, and the heat insulation performance of the heat insulation box can be improved.
Moreover, since the hard heat insulating material is filled in at least the second gap portion among the first gap portion and the second gap portion constituting the gap portion, the heat entering the room through the partition plate can be further blocked. At the same time, deformation of the heat insulating box can be suppressed.
[0027]
Further, since the heat radiating pipe is in close contact with the front surface portion of the design plate or the front surface portion and the leg-shaped end side, heat transfer from the heat radiating pipe can be made smooth and the temperature of the design plate can be increased efficiently.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of 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 diagram of the first embodiment.
FIG. 6 is a longitudinal sectional view of an essential part of Embodiment 2 of the present invention.
FIG. 7 is a longitudinal sectional view showing an example of a conventional heat insulation box.
[Explanation of symbols]
1 partition plate, 2 freezer compartment, 3 refrigerator compartment, 5 freezer door, 6 refrigerator door, 7 outer shell, 8 upper plate, 9 lower plate, 10 partition wall, 12 gap portion, 15 design plate, 15a front portion, 15b tension Protruding end, 15c Leg-shaped side edge, 17 First gap, 18 Second gap, 19 Heat radiation pipe, 20 Flexible heat insulating material, 21 Hard heat insulating material.

Claims (2)

In the cross-sectional hot box body that having a plurality of chambers partitioned by the partition plate,
An opening is formed by a partition wall and upper and lower plates at the door side end of the partition plate,
In front of the opening, the radiating pipe and have a plurality of legs shaped end side toward the rear end portion is fitted with a closely spaced design plate,
Of the first gap portion constituted by the leg-shaped end sides and the second gap portion constituted by the upper and lower partition plates, at least the second gap portion is filled with a hard heat insulating material. Heat insulation box. The heat insulating box according to claim 1, wherein the heat radiating pipe is in close contact with a front surface portion of the design plate or the front surface portion and a leg-shaped end side.

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