JPS6249555B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insulating box for a cooling device used in a refrigerator, etc., in which a high-pressure refrigerant pipe forming a condenser of the cooling device is provided in the insulating box, and improves the heat dissipation effect of the high-pressure refrigerant pipe. It is something.

A conventional heat insulating box will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is a heat insulating box, which is made up of an outer box 2, an inner box 3, and a heat insulating material 4 filled between both boxes 2 and 3. The inside of the refrigerator is cooled by a cooling device, and a door ( (not shown) and is used for refrigerators, etc. The outer box 2 has both side surfaces 5, 5' and a top surface 6 formed by bending a single plate 7, and a back plate 8 and a bottom plate 9 are formed as separate parts on the plate 7 and are welded. It is installed. The back plate 8 has vertically rising flanges 10 and 10' on both sides, and is attached by welding to flanges 11 and 11' formed at the rear ends of the side surfaces 5 and 5' of the plate 7, and is attached to the side surfaces 5 and 5' by welding. A space 12 is formed between the flange 11 and the flange 11 .

A high-pressure refrigerant pipe 13 is provided in the space 12 and serves as a condenser of the cooling device. Further, the back plate 8 is formed with a protrusion 14 that protrudes rearward. 15 is a thermally conductive sealer provided in the space 12.

In such a device, if the heat insulating box 1 is installed close to the wall surface, the distance between the back plate 8 and the wall surface or other products at the installation location will be reduced, and the heat dissipation of the high pressure refrigerant pipe 13 will be , 5' or the back plate 8, the heat dissipation effect deteriorates, and the performance of the cooling device sometimes decreases. Further, when attaching the back plate 8 to the flanges 11, 11' on both side faces 5, 5', the attachment work was difficult because the back plate 8 was longer than the space between the flanges 11 on both side faces 5, 5'. In addition, if the flanges 10, 10' of the side surfaces 5, 5' and the back plate 8 are poorly welded, the thermally conductive sealer 15 will be pushed out by the foaming pressure of the heat insulating material 3, resulting in the contamination of the outer box 2. Was.

The present invention provides a heat insulating box that improves the above drawbacks.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

In the figure, 16 is a heat insulating box body, an outer box 17, an inner box 18, and a heat insulating material 1 filled between both boxes 17 and 18.
It is more like 9. The outer box 17 has both sides 2
0, 20' and a back surface 21 are formed by bending a single plate 22, and a high-pressure refrigerant pipe 24 of a refrigeration cycle is provided at each corner portion 23 of this plate 22. 25
is a duct plate, which forms a duct 26 extending in the vertical direction between it and the back surface 21 of the outer box 17, and has leg pieces 27, 2 that are bent outward at both ends and abut against the back surface 21.
7' is provided, and flanges 28, 28' are formed by cutting and raising inward from the leg pieces 27, 27'.
It is brought into contact with the high pressure refrigerant pipe 24. 29
is a top plate attached to the upper surface of the plate 22, and has a notch in the portion facing the duct 26. 30 is board 2
A bottom plate formed on the bottom surface of the plate 22, located slightly above the lowest end of the plate 22, and a portion corresponding to the duct 26 is cut out. 31 is the duct plate 25
This is a thermally conductive sealer that brings the high-pressure refrigerant pipe 24 into contact with the side surfaces 20, 20', the back surface 21, and the high-pressure refrigerant pipe 24.

Then, the inner box 18 is attached to the outer box 17 formed in this way.
is set, and a heat insulating material 19 is filled and foamed between both boxes 17 and 18.

In such a case, even if the back surface 21 or side surface 20 of the insulation box 16 is brought close to or in close contact with the wall surface of the installation location, the high-pressure refrigerant pipe 24
Since it is also in contact with the duct plate 25, heat is transmitted to the duct plate 25 and radiated from the duct 26. As a result, even if the heat dissipation from the side surfaces 20, 20' and the back surface 21 is poor, the condensing ability can be prevented from decreasing. Furthermore, since the side and back plates of the outer box 17 are not connected by welding as in the conventional case, there is no problem such as poor welding and leakage of the thermally conductive sealer 31 due to foaming pressure, which would stain the exterior.

As is clear from the above embodiments, the present invention includes a plate having an outer box bent at the back and both sides, a top plate and a bottom plate attached to the top and bottom surfaces of this plate, and corner portions of the bent plate. A duct is formed by a high-pressure refrigerant pipe installed in the outer box, and a duct plate is attached to form a duct passing through the bottom plate and the top plate with the back surface of the plate, and to exchange heat with the high-pressure refrigerant pipe. Since an inner box is built in and the insulation material is filled and foamed between both boxes, even if the product is installed close to or in close contact with a wall, heat can be dissipated from the high-pressure refrigerant pipe through the duct plate and from the duct. It is possible to prevent the cooling arrangement from deteriorating in capacity, and since the side and back surfaces are integrally bent, the appearance is improved.

[Brief explanation of the drawing]

FIG. 1 is a rear view of a conventional heat insulating box, FIG. 2 is a sectional view taken along the line taken from FIG. 3
FIG. 16...Insulating box, 17...Outer box, 18...Inner box, 19...Insulating material, 20, 20'...Side, 2
2...Plate, 23...Corner part, 24...High pressure refrigerant pipe, 25...Duct plate, 26...Duct, 2
9...Top plate, 30...Bottom plate.

Claims (1)

[Claims] 1 An outer box in which a high-pressure refrigerant pipe forming a condenser of a cooling device is interposed in an insulated box, and a top plate and a bottom plate are provided on the top and bottom of plates bent to form the back and both sides. and a duct plate which forms a duct opening on the upper and lower surfaces with a high-pressure refrigerant pipe provided at a corner of the plate and a back surface of the plate, and is attached to exchange heat with the high-pressure refrigerant pipe; A heat insulating box body for a cooling device formed of an inner box attached to the outer box and a heat insulating material filled between the outer box and the inner box.