JPH0129499Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a heat insulating box for a refrigerator, and more specifically to a hot pipe for preventing condensation that is installed in a holding part formed inside the opening edge of the outer box. This relates to the mounting structure.

``Prior Art'' A conventional heat-insulating box body for a refrigerator has a holding part 13 formed by folding back and having a substantially U-shaped cross section inside the opening edge of an outer box 11, and a flange 1 of an inner box 14 inside the holding part 13.
5 and the hot pipe 16,
Furthermore, fit the fixing metal fittings 17 and attach the hot pipe 16.
The insulation material 1 is tightly fixed to the inner part of the holding part 13, and foamed urethane or the like is injected between the outer box 11 and the inner box 14.
I tried to form 8.

"Problems that the invention attempts to solve" However, according to the above conventional structure, the outer box 1
Since a separate fixing fitting 17 is required to tightly fix the hot pipe 16 to the inner part of the holding part 13 of 1, installation becomes troublesome and the number of parts increases. ,
It has been difficult to tightly fix the hot pipe 16 within the holding portion 13.

"Means for Solving the Problems" The present invention was developed in view of the above-mentioned conventional problems. A plurality of openings are formed at appropriate locations, a stretchable film is attached to the openings so as to close the openings, and the hot pipe is held in the holding part by the heat insulating material that enters into the holding part through the film during molding of the heat insulating material. It is designed to be tightly fixed to the inner part of the body.

``Example'' The present invention will be explained with reference to an example shown in the figure below. 1 is an outer box constituting a heat insulating box of a refrigerator;
The inside of the opening edge 2 of the outer box 1 is approximately U by folding.
A holding part 3 having a shaped cross section is formed, and a flange 5 of an inner box 4 is fitted into the holding part 3, and a hot pipe 6 for preventing dew condensation is fitted inside the holding part 3.

On the other hand, the hot pipe 6 of the holding part 3 of the outer box 1
A required number of openings 7 are formed at appropriate locations on the inside in contact with the openings 7, and a stretchable film 8 is attached to the openings 7 by means such as heat welding so as to close the openings 7. A heat insulating material 9 made of urethane foam or the like is formed between the box 1 and the inner box 4.

"Function" In the above-described configuration, when foamed urethane is injected between the outer box 1 and the inner box 4, the film 8 expands due to the foaming pressure during the process, and the holding part 3
The hot pipe 6 is pushed toward the inner part of the holding part 3 by the heat insulating material 9 which enters into the holding part 3 via the film 8. and is fixed in close contact with the inner part of the holding part 3.

``Effect of the idea'' As mentioned above, when installing the hot pipe inside the holding part formed inside the opening edge of the outer box,
Since the hot pipe is fixed by the heat insulating material that enters the holding part through the film, there is no need for separate fixing fittings unlike conventional ones, reducing the number of parts and making installation work easier. Furthermore, since the hot pipe is fixed in close contact with the inner part of the holding part, there is no installation problem that occurs with conventional pipes, and the effect of preventing condensation is further improved. can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a main part of a heat insulating box of a refrigerator showing an embodiment of the present invention, Fig. 2 is a perspective view of a main part of the opening edge of the outer box of the heat insulating box, and Fig. 3 is a cross-sectional view of a main part of a heat insulating box of a conventional refrigerator. FIG. 3 is a cross-sectional view of the main parts of the heat insulating box. In the figure, 1 is the outer box, 2 is the opening edge, 3 is the holding part,
4 is the inner box, 5 is the flange, 6 is the hot pipe, 7
is an opening, 8 is a film, and 9 is a heat insulating material.

Claims (1)

[Scope of utility model registration request] Cross section abbreviated to U by folding inside the opening edge of the outer box
A heat insulating box body for a refrigerator, which has a shaped holding part, a hot pipe for preventing condensation and a flange of an inner box are fitted into the holding part, and a heat insulating material such as urethane foam is formed between the inner box and the outer box. A heat insulating box for a refrigerator, characterized in that a plurality of openings are provided at suitable positions inside the holding part in contact with the hot pipe, and a stretchable film is attached to the openings to close the openings.