JPS62108983A - Heat-insulating box body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat insulating box for use in refrigerators and the like.

Conventional technology In recent years, condensing pipes in the refrigeration cycle used in refrigerators have been embedded in the insulating box and placed on the inner box side of the outer box to improve heat dissipation characteristics and design issues. ing.

Hereinafter, an example of the conventional heat insulating box described above will be described with reference to the drawings.

3 to 4 show conventional heat insulating boxes. In Fig. 3, 1 is a heat insulating box body, an inner box 2 made of plastic, an outer box 3 made of iron plate, etc., and an inner box 2 of the outer box 3.
A pipe 5 for condensation during the refrigeration cycle is covered with a tape 4 made of aluminum foil approximately 100μ thick with adhesive on the surface.
, is arranged.

After fixing the pipe 5 to the outer box 2, a foamed heat insulating material 6 such as urethane heat insulating material is filled between the inner and outer boxes to form a heat insulating box 1. However, when fixing the vibro to the outer box 3 with the tape 4, ,
Since the tape 4 does not completely follow the pipe 5, there is a gap 7.
occurs, and even after filling the foam insulation material 6, the void 7 remains
Not resolved.

The pipe 5 configured as described above performs a condensing action (heat radiation) when the refrigeration cycle is operated, and radiates heat through the outer box 2.

Problems to be Solved by the Invention However, in the above configuration, the foam heat insulating material 6
When the fluorocarbon gas used for the fluorocarbon gas enters the void 7 and the insulating box 1 is exposed to a low outside temperature of 0°C or less, the pressure of the fluorocarbon gas causes the void 7 to become depressurized and There was a problem in that the periphery 8 of the arrangement portion was deformed.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention aims to prevent deformation of the outer box of the pipe installation portion that occurs at low outside temperatures.

Means for Solving the Problems In order to solve the above-mentioned problems, the insulating box of the present invention has a large number of small holes when installing the condensation pipe in the refrigeration cycle on the surface of the outer box on the inner box side. It has a structure that uses open tape.

Effect The present invention has the above-described configuration, so that air can be generated between the inside and outside of the box. When the pipe is fixed, the foam insulation material penetrates into the void through the many small holes in the tape that fixes the pipe.
By eliminating the void, the deformation of the outer box due to the decompression of the fluorocarbon gas is eliminated.

EXAMPLE Hereinafter, a heat insulating box according to an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a perspective view of a heat insulating box according to an embodiment of the present invention. Components that are the same as those of the conventional example are designated by the same numbers and detailed description thereof will be omitted.

In the figure, reference numeral 9 indicates a tape made of aluminum foil in which a large number of holes 1o having a diameter of the mathematical order are uniformly formed.

Similar to the conventional example, the tape 9 is used to fix the vibro to the outer box 2, and a gap is created between the outer box 3 and the tape 9.

Next, when the foam insulation material 6 is filled between the inner and outer boxes, the foam insulation material 6 enters the gap 7 through the hole 10 made in the tape 9, and the void 7 is completely filled with the foam insulation material 6. Filled.

As described above, according to this embodiment, the tape with a large number of small holes 1o is used to absorb condensed vibro during the refrigeration cycle from the outer box 3.
By fixing the foam insulation material 6 through the hole 1o, the gap 7 created between the tape 9, the pipe 5, and the outer box 3 is completely filled.
Deformation of the periphery 8 of the pipe 5 installation part can be prevented.

Effects of the Invention As described above, the present invention fixes the condensation pipe during the refrigeration cycle using a tape with a large number of narrow holes on the surface of the outer box on the inner box side, and then inserts foam insulation between the inner and outer boxes. The insulating box is filled with a foamed insulating material between the pipe, tape, and outer box to prevent deformation of the outer box where the pipes are installed due to decompression of fluorocarbon gas at low outside temperatures. I can do things.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a heat insulating box according to an embodiment of the present invention;
2 is a sectional view taken along line 1-1' in FIG. 1, FIG. 3 is a perspective view of a conventional heat insulating box, and FIG. 4 is a sectional view taken along line nn' in FIG. 3. 3...Outer box, 5...Pipe, 7...
...Gap, 8...Around the pipe installation part, 9...
····tape.

Claims (1)

[Claims] an outer box, an inner box, and a foam insulation material filled between the inner and outer boxes;
A heat insulating box body comprising: a condensation pipe for a refrigeration cycle fixed to a surface of the outer box on the inner box side with a tape having a large number of small holes.