JPH01256781A - Refrigerator - Google Patents

Abstract

PURPOSE:To make the thermally conductive, heat radiation sealer unnecessary by simultaneously caulking the side of the condensation pipe on the flanges of the outer casing and the rear panel so as to establish a positive contact for better thermal conduction. CONSTITUTION:The outer casing 2 has an outer flange 2a formed on the rear edge of the side panel, a foldback flange 2b folded back to the rear of said outer flange 2a and an inner flange 20 extended from said foldback flange 2b. The rear panel 3 has a flanged recess 3b on both sides of it, and the outer side of said flange recess 3b is engaged with the inner flange 20 of the outer casing 2. The side 7 of the condensation pipe is simultaneously caulked with the inner flange 2c of the outer casing 2 and the flange recess 3b of the rear panel 3 with the side 7 of the condensation pipe internally brought in contact with the inner side of the flange recess 3b. Because the contact between the side 7 of the condensation pipe and the outer casing 2 as well as the rear panel 3 is positively established, and the contact area becomes greater, there will be better thermal conductivity, rendering the thermally conductive sealer unnecessary. Further, because the outer casing 2 and the rear panel 3 are simultaneously caulked, the hot melt 9 also becomes unnecessary for sealing purpose.

Description

[Detailed description of the invention] Industrial applications The present invention particularly relates to a heat insulating box for a refrigerator.

Prior art A conventional example will be explained based on FIGS. 3 and 4. Reference numeral 1 indicates a refrigerator body, outer box 2. A back plate 3 engaged with the back side of the outer box 2. Inner box 4 and said outer box 2. It consists of a heat insulating material 6 filled between the back plate 3 and the inner box 4.

Reference numeral 6 indicates a condensing pipe constituting a part of the refrigeration cycle, and reference numeral A indicates the end on the condensing pipe side. The condensing pipe side end 7 is held between an outer flange 2a roll-formed on the rear ridge of the outer box 2 and an outer flange 3 formed on both ends of the back plate 3.

8 is a thermally conductive tube poured around the condensing pipe side end 7 to improve heat conduction from the condensing pipe side end 7 to the outer box 2. 9 is a hot V-shaped condensing pipe side end 7
．． This is a sea μ material that prevents the heat insulating material 6 from penetrating into the thermally conductive sealer 8.

Problems to be Solved by the Invention However, in the conventional groove construction, the condensing pipe side end 7 and the outer box 2. The contact area with the back plate 3 is small and heat conduction is poor, so a thermally conductive thieves 8 is applied, but the application state of the thermally conductive thieves 8 is constant due to uneven installation of the condensing pipe side end 7. Not. In order to keep the amount constant, the amount of coating increases, which causes high costs. Further, during urethane foaming, the thermally conductive thieves 8 leaked from between the outer box 2 and the back plate 3 due to the foaming pressure, which was detrimental to the appearance quality.

The present invention solves these conventional problems by increasing the amount of serum that comes into contact with the outer box and back plate at the end of the condensing pipe, and eliminating the need for thermally conductive sheets and hot melt adhesives. The object of the present invention is to obtain an insulating box equipped with a condenser that has a stable and reliable heat dissipation effect while reducing cost.

Means for Solving the Problems In order to achieve the above object, the present invention forms a double flange at the rear end of the side plate of the outer box forming the outer shell of the insulating box body, and a double flange is formed at the inner flange at both ends of the back plate. Engage the outside of the formed flange recess. The condensing pipe side end is inscribed inside the flange recess, and this condensing pipe side end is simultaneously connected to the flange recess formed on the back plate and the inner flange of the double flange formed on the rear end of the side plate of the outer box. Crimp and configure.

Effects The present invention has the above-described configuration in which the condensing pipe side end is caulked simultaneously with the flange recess formed on the back plate and the inner flange of the double flange formed on the rear end of the side plate of the outer box. , the end of the condensing pipe, the outer box, and the back plate are in reliable contact, and the amount of serum that comes into contact with them is increased, heat transfer is increased, and thermally conductive sheets are no longer required, and the outer box and back plate are caulked at the same time. This eliminates the need to apply hot melt, which is a glue material, and brings about a reduction in cost and a stable and reliable heat dissipation effect.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1, 2, and 3. Structures that are the same as those of the prior art are designated by the same reference numerals, and detailed explanation thereof will be omitted.

The outer box 2 has an outer flange 2° formed on the rear edge of the side plate.
a1 A folded back flange 2b1 is formed on the back surface of this outer flange 2a, and an inner flange 2c extending from this folded flange 2b is formed.

The back plate 3 has four flange portions 3b formed at both ends, and the outer side of the flange recess 3b is engaged with the inner flange 2C of the outer box 2. The condensing pipe side end 7 is inscribed inside the flange recess 3b, and the condensing pipe side end 7 is caulked with the inner flange 2c of the outer box 2 and the flange recess 3b of the back plate 3 at the same time.

tb, an inner flange 2c formed on the outer box 2 with the condensing pipe side end 7 and a flange recess 3 formed on the back plate 2.
By caulking at the same time with b, the condensing pipe side end 7
and outer box 2. Since the contact with the back plate 3 is reliable and the contact area is increased, heat transfer is increased and the thermally conductive sheet 8 is unnecessary. Further, since the outer box 2 and the back plate 3 are caulked at the same time, the hot melt 9 as a sealing material is unnecessary.

Effects of the Invention As is clear from the above embodiment, the present invention has the advantage of caulking the end of the condensing pipe at both the flanges of the outer box and the back plate at the same time, ensuring reliable contact and direct heat conduction. In addition to improved heat transfer and stable heat dissipation, it also eliminates the need for thermally conductive sheets, reducing costs. Further, by caulking the outer box and the back plate at the same time, the contact between the two is ensured, so hot melt as a sealing material is not required, and the cost can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a refrigerator showing an embodiment of the present invention, Fig. 2 is a sectional view of the pipe shown in Fig. 1 before caulking, Fig. 3 is a perspective view of the refrigerator, and Fig. 4 shows a conventional example. FIG. 2 is a cross-sectional view of the refrigerator. 2...Outer box, 2c...Inner 7 flange,
3. Old... Back plate, 3b... Flange recess, 4
...Kawauchi box, 6...Foam insulation material, 7...
...The side end of the condensing pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
@ Figure 3 Figure 4

Claims (1)

[Claims] An outer box that forms the outer shell of the insulating box body, a back plate that engages with the inner flange of the double flange formed at the rear end of the side plate of this outer box, and an inner part that fits into the flange recesses formed at both ends of this back plate. The refrigerator is provided with a side end portion of a condensing pipe provided in contact with each other, and a foamed heat insulating material is filled between the outer box, the back plate, and the inner box.