JPS6199083A - 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] Industrial applications The present invention relates to a heat insulating box for a refrigerator or the like.

Conventional configurations and their problems A conventional example will be explained based on FIGS. 6 to 8. 1 is a heat insulating box, 2 is an outer box of the heat insulating box, 3 is an inner box of the heat insulating box, 4 is a heat insulating box. is a foamed heat insulating material such as urethane filled between the boxes 2 and 3. The condensing pipe 5' constituting the condenser of the cooling cycle was disposed within the double 7 flange 6 of the outer box 2, and the auxiliary pipe 7' was fixed to the side surface of the outer box 2 with aluminum foil 8 or the like. Further, both ends 5 a's b', 7 a', -r b' of the condenser pipe 5 and the auxiliary pipe 7' are led out from the outer box 2 to the machine room 9, and the ends of both pipes are connected in this machine room 9. Parts ts b' and 7b' were welded together.

However, according to this configuration, the auxiliary pipe 7 is attached to the side of the outer box 2.
′ is pasted, the position of the auxiliary pipe 7′ is unstable and the pasting work is difficult, and the pasting causes unevenness in pasting, such as the aluminum foil 8 lifting, which adversely affects the heat dissipation effect, and the energy saving of the cold cell storage. It was causing monetary damage. Furthermore, both pipes 5
``, 7'' are led out from the outer box 2 to the machine room 9, and in order to prevent the foam insulation from leaking, both pipes 5
It is necessary to seal the four outlets of ', 7' with sealing material, etc. Also, since there are four pipes coming out of the machine room 9, the foaming jig used to foam the foam insulation material 4 may hit the pipes. There were problems with it breaking.

Purpose of the Invention The present invention has been made in view of the above points, and its purpose is to shorten the work time for installing a condenser pipe, to install a condenser that obtains a stable heat dissipation effect, and to reduce foaming when foaming insulation material. Prevent pipe bending due to jigs.

Structure of the Invention The present invention has a holder attached to the side of the outer box of a heat insulating box body, holds the auxiliary pipe with this holder to securely attach the auxiliary pipe, and connects the auxiliary pipe and the condenser pipe to the inside of the outer box. The number of pipes led out from the outer box to the machine room was reduced by welding.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings FIGS. 1 to 5.

101 is the refrigerator body, 102 is an outer box, 1Q3 is an inner box, and 104 is a foam insulation material such as urethane filled between the boxes 102 and 103. 106° and 107 are condenser pipes and auxiliary pipes that constitute part of the refrigeration cycle;
The condenser pipe 105 is connected to the double flange 106 of the outer box 102.
The auxiliary pipe 107 is attached to a holding part 111 that opens on the front side and has a flared tip, which is formed in a steel plate holder 110 that is attached to the side of the outer box 102 with double-sided tape or the like.
A heat conductive sealer 112 is poured around it.

107 c is an S-shaped bent part formed in the lower part of the auxiliary pipe 107, and its tip is connected and welded to the tip of the U-shaped bent part 105 c formed in the lower part of the condenser pipe 105. .

In such a configuration, the assembly is performed by assembling the outer box 10 of the inner box 103.
2, the outer box 102 is positioned with the front opening facing upward as shown in FIG.
1 is positioned and pasted on the side surface of the outer box 102 using a pasting jig (not shown) or the like.

Then, the auxiliary pipe 107 connects the tip 107a to the outer box 102.
After the pipe is led out to the machine room 109 through the pipe, the outlet portion of the outer box 102 is sealed with a sealing material (not shown). Then, it is disposed within the holding portion 111 of the holder 110, and then a heat transfer paste 112 is poured around the auxiliary pipe 107 and fixed.

After that, the condenser pipe 105 connects the tip 105a to the outer box 10.
2 into the machine room 109, and then disposed within the double flange ZOS of the outer box 102. Also, condenser pipe 1
The U-bending portion 105C of 05 and the tip of the S-bending portion 107C of the auxiliary pipe 107 are connected. At this time, as shown in FIG. 4, using the cushion of the pipe of the S-bending part 10C, the connecting part 11 between the U-bending part 105C and the S-bending part 107c is connected.
3 is placed in the center of the refrigerator body and welded so as not to affect the heat of the welding flame on the painted surface of the outer box 1020. Furthermore, since the connecting portion 113 is parallel (horizontal) to the opening surface, welding work is easy, and welding can be performed without clogging of the welding material of the pipe or welding defects such as leakage. And after this outer box 10
2, an inner box 103 is set, a foaming jig (not shown) is entirely surrounded, and a foamed heat insulating material 104 is foamed and filled.

Effects of the Invention As is clear from the above explanation, the present invention allows attachment of the auxiliary pipe by first fixing the attachment position of the holder to the outer box, and then
The auxiliary pipe is inserted into the holder, then the condenser pipe is inserted into the double flange of the outer box, and both pipes are connected and welded, so the position of both pipes is stabilized and securely fixed. The position of the weld is determined, and the cushion of the S-bend does not apply excessive stress to the weld, preventing the pipe from breaking during welding heating, and preventing the heat effect of the welding flame from affecting the painted surface of the outer box. Welding can be done in the center of the refrigerator to prevent discoloration and burning of the paint due to exposure to heat. In addition, since the connecting portions of both pipes are parallel to the opening surface of the outer box, welding work can be easily performed without problems such as clogging or leakage of the pipes with welding material.

Furthermore, since both pipes are connected within the outer box, the number of pipes extending to the outer surface of the outer box is reduced, and there is no problem such as the pipes coming into contact with each other and breaking due to the foamed heat insulating material foaming jig.

[Brief explanation of drawings]

Fig. 1 is an enlarged view of the main parts of a heat insulating box according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the heat insulating box, Fig. 3 is a perspective view showing the piping state of the condensing pipe, and Fig. 4 6 is a schematic side view showing the piping state of the condensing pipe, FIG. 6 is a schematic perspective view showing the shape of both pipes when welded, and FIG. 6 is a perspective view of a conventional heat insulating box.
FIG. 7 is a cross-sectional view thereof, and FIG. 8 is a longitudinal cross-sectional view thereof. 102... Outer box, 103... Inner box, 1
04... Foam insulation material, 105... Condenser pipe, 105c... U-bend portion, 106...
...Double flange, 107...Auxiliary pipe,
107c...S bending part, 110...Holder, 111...Holding part, 113...
Connecting part. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 6 Figure 8

Claims (1)

[Claims] A double flange formed on the outer box, a condenser pipe with a U-shaped bottom located at the back of this flange, a holder attached to the inner surface of the outer box, and a holding part of this holder. The U-shaped end of the condenser pipe consists of an auxiliary pipe that is inserted and held and formed in an S-shape at the bottom and whose terminal end is bent downward, and a foam insulation material filled between the outer box and the inner box. and the S-shaped end of the auxiliary pipe are connected and welded together.