JPS5843375A - How to fix a pipe to prevent condensation in a refrigerator - 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 The present invention relates to a method for fixing a pipe for preventing condensation in a refrigerator.1. , make the ld pipe pipe miserable-C easy 1. ,,! , so that it can be firmly fixed.

In this type of refrigerator, a part of the refrigerating cycle air conditioner is used as a pipe to prevent condensation, and this pipe is placed along the inside of the flange part of the front opening of the outer box, and the heat of the pipe is used to prevent condensation. A product is provided that is designed to prevent condensation from forming on the flange of the outer box. Conventionally, when placing and fixing this pipe inside the flange part of the outer box, a fixing fitting for holding the pipe is welded to the flange part, or a piece is cut and raised on the flange part. The cut and raised pieces are bent to hold the pipe. However, in the above conventional configuration,
In the former case of using fixing metal fittings, the drawback is that it is expensive.
However, in the latter case where a cut and raised piece is formed, there is a disadvantage that the pipe tends to move when the cut and raised piece is bent and the tightness of the pipe to the flange part is poor.

The present invention was developed to improve the above-mentioned defects.The present invention forms a substantially Ω-shaped flange portion having a circular arc groove, and protects the condensation prevention pipe placed along the circular groove of the 7272 portion. A thermoplastic fixing substance is injected into the held and temporarily fixed pipe, which is held by a magnet provided in a tool, and the fixing substance is solidified by the action of cooling air to permanently fix the pipe.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. Reference numeral 1 denotes an outer case made of a thin steel plate, and a substantially Ω-shaped flange portion 2 having an arcuate groove 2a with one side open at the front opening thereof.
Bend it inward to form. Reference numeral 3 designates a dew condensation prevention pipe disposed within the arcuate groove 2a of the flange portion 2, which forms part of a condenser of a refrigeration cycle (not shown). Next, as described above, put the dew prevention pipe 3 in the outer box. 7,7□2 to &! enemy・, auto, bkayo 1, 4
,ru. In FIG. 2, 4 is a receiving jig, and a pipe 3 for preventing condensation is placed along the arcuate groove 2a of the flange portion 2.
A plurality of permanent magnets 5 are provided at predetermined intervals along positions.

Place the 7272 part 2 of the outer box 1 on such a receiving jig 4, attach the dew condensation prevention pipe 3 in the arcuate groove 2a of the flange part 2, and place the receiving jig 4 as shown in FIG. The pipe 3 is held and temporarily fixed in the arcuate groove 2a by a permanent magnet 5.

In this way, after the pipe 3 is temporarily fixed in the arcuate groove 2a of the flange portion 2 of the outer box 1, a thermoplastic synthetic resin 6 is applied to the pipe 3 as a fourth fixing material over the entire area. The synthetic resin 6 is injected as shown in the figure, and cold air is directly injected from the injection nozzle 7 to solidify the synthetic resin 6 and permanently fix it.

After fixing the dew condensation prevention pipe 3 to the flange part 2 of the outer box 1 as described above, the inner box 8 is superimposed on the inside of this flange part 2. Then, between the outer box l and the inner box 8 Foam ← The heat material 9 is injected, foamed, solidified, and filled. Note that -1O is a door backing that closes the open part of the arcuate groove 2a after the pipe placed in the arcuate groove 2a is permanently fixed.

Since the present invention is configured as described above, the condensation prevention pipe 3 does not rise or move until the entire refrigerator is assembled, unlike the conventional case, and the flange portion 2
It can be securely fixed in close contact with the body, and can be manufactured at a lower cost than when using conventional fixing metal fittings. The present invention forms a substantially Ω-shaped flange portion having a circular arc groove with one side open at the front opening of the outer box, and a dew condensation prevention device arranged along the circular arc groove of the flange portion. The pipe is held by a magnet equipped with a holding jig, and the held and temporarily fixed pipe is made of thermoplastic material. Since the fixing substance is injected 1 and the fixing substance is solidified by the action of cooling air for final fixing, it is possible to achieve good adhesion to the flange of the outer box of the pipe for preventing condensation, and furthermore, The present invention can provide a method for fixing pipes for preventing condensation in refrigerators, which can shift from manual work to automation and contribute to improved production.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a refrigerator showing one embodiment of the present invention;
The figure is a perspective view of the receiving jig according to the present invention, FIG. 3 is a cross-sectional view of the temporary local fixation state 21 according to the present invention, FIG. 4 is a perspective view of the local part permanently fixed state according to the present invention, and FIG. FIG. 1 is a sectional view taken along line A-A in FIG. 1...Outer box, 2...7272 parts, 2a river arc groove, 3
... Condensation prevention pipe, 4 river receiving jig, 5... Permanent magnet, 6... Synthetic resin (fixed substance), 7... Injection nozzle, 10... Door backing. Patent attorney Susuki 1) Toshinori...'1st T4 decoy

Claims (1)

[Scope of Claims] 1. A condensation prevention pipe in which an arcuate groove with one side open at the front opening of the outer box is placed along the inner arcuate groove of the part is held by a magnet provided in a receiving jig, and Hold and temporarily fix 7
Fixing power of a pipe for preventing condensation in a refrigerator 2, characterized in that a thermoplastic fixing substance is injected into the pipe, and the fixing substance is solidified by the action of cooling air to be permanently fixed.
A method for fixing a condensation prevention pipe in a refrigerator according to claim 1, characterized in that the receiving jig is provided with a plurality of magnets at predetermined intervals. 3. The method for fixing a pipe for preventing dew condensation in a refrigerator according to claim 1, wherein after the pipe placed in the arcuate groove is permanently fixed, a door backing is attached to the open part of the arcuate groove.