Refrigerating storage cabinet

Abstract

This invnetion discloses a cooling storage cabinet effectively eliminating problems occurring at a welded part of a cooling pipe. A refrigerating chamber 1 comprises an insulation casing 6 formed by foaming and filling a foam heat insulating material 4 between an inner box 2 and an outer box 3 having the cooling pipe 14 fixed on the outer surface. The welded place of the cooling pipe 14 is arranged outside the foam heat insulating material 4. The plurality of cooling pipes 14A, 14C is fixed on the inner box 2 and respectively connected with each other at the welded place. The welded part of the cooling pipes 14 is arranged inside the inner box 2 and covered by a detection plate 28.

Description

technical field [0001] The present invention relates to a refrigerated storage which is composed of a heat-insulating box formed by foam-filling a heat-insulating material between an inner box and an outer box, and a cooling pipe is installed on the outside of the inner box. Background technique [0002] Conventionally, this kind of refrigerating storage, such as a freezer having a so-called tube plate type (Chikobuonshit type) refrigerator with an upper opening, has a plurality of refrigerant circuits attached to the outside of an inner box (for example, made of aluminum). Cooling pipes (made of copper or aluminum) are welded and connected to each other and then put into the outer box. In the state of being arranged in the specified foaming fixture, heat insulating materials such as polyurethane are filled between the two boxes. And constitute a heat insulation box (for example, refer patent document 1). [0003] In such a refrigerated storage room, if the welding position...

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Problems solved by technology

[0006] On the other hand, since the welding position of the cooling pipe is buried in the foam insulation material in the conventional refrigeration storage as mentioned above, in case no defective welding is found in the air leakage test after welding, and the product afterward In the pre-shipment test, when it was found that air leakage caused refrigeration failure, the completed refrigeration storage had to be discarded because the welding position could not be repaired.

[0007] In addition, even if the air leakage is found to cause poor refrigeration after the product is sold, the product has to be returned because it cannot be repaired at present, and the repair cost is also high.

[0008] In addition, since the welding position of the cooling pipe is usually larger than the outer diameter of other parts of the pipe, in the case of an aluminum inner box with a soft surface, there is a deformation called a scratch.

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