JPS5924165A - Method of fixing pipe for preventing dew condensation of 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.

In a refrigerator, a part of the condenser of the refrigeration cycle is used as a condensation prevention pipe, and this pipe is placed between the inside of the flange part of the front opening of the outer box and the flange part of the inner box. The heat from the pipe prevents dew from forming around the flange of the outer case.

Therefore, when fixing this pipe to the flange part of the outer box or the flange part of the inner box, 1. Conventionally, the fixing metal fittings that hold the pipe are attached floatingly to the flange part of the outer box, or The pipe is fixed by attaching a fixing fitting that holds the pipe to the flange of the vacuum-formed inner box.

However, in the above-mentioned conventional configuration, the fixing metal fittings are required to be nailed, which is expensive, and one of the fixing metal fittings may come off during assembly, resulting in uneven heat exchange, resulting in inconsistent installation workability and quality. There is.

The present invention has been made to improve the above defects,
The purpose of this is to temporarily fix a long condensation prevention pipe onto the permanent magnet of the vacuum mold that will form the inner box, and then temporarily place a heat-softened synthetic resin sheet over the temporarily fixed pipe and the vacuum mold. The inner box is vacuum formed using a well-known vacuum forming method, and the pipe is integrally adsorbed and fixed to the peripheral flange and partition formed on the inner box, thereby making it possible to incorporate the condensation prevention pipe. To provide a method for fixing a pipe for preventing condensation of a refrigerator, which can be manufactured at low cost and has good workability and quality.

The present invention will be explained below with reference to an embodiment shown in FIGS. 1 to 5. 1 is the refrigerator main body, and this main body 1 has an outer box 2,
It consists of an inner box 3 vacuum-formed from synthetic resin and a foamed heat insulating material 4 filled between the two boxes. Reference numeral 5 denotes a dew condensation prevention pipe which is part of the condenser of the refrigeration cycle and serves as a heating source to prevent dew condensation. It is fixed to the partition part 3b and disposed along the inner side of the flange part 2a of the front opening of the outer box 2 and the flange part 3a of the inner box 3 to prevent dew formation.

Next, the procedure for fixing a pipe for preventing condensation in a refrigerator according to the present invention will be explained.The inner box 3 is formed by vacuum forming. That is, as shown in FIG. 2, the pipe 5 is placed on a plurality of permanent magnets 7 embedded continuously or at predetermined intervals in the flange molded part 6a around the vacuum mold 6 and the partition molded part 6'b in the center. Temporarily fix it.

Next, a synthetic resin sheet 8 is temporarily placed above the vacuum forming mold 6 with a gap left therebetween. Then, the sheet 8 is heated and softened by a forming process of a well-known vacuum forming method, and forming is started in a flexible state. That is, the sheet 8 is sucked by vacuum pressure through a large number of vacuum holes (not shown) provided in advance on the surface of the vacuum mold 6 and is formed along the surface of the vacuum mold 6.

At this time, the pipe 5 is placed in the vacuum mold 6 and constitutes a part of the vacuum mold 6. Therefore, the sheet 8 is heated and softened along the shape of the vacuum mold 6 and the pipe 5 that the sheet 8 comes into contact with, and is adsorbed according to its cross-sectional shape, and the flange portion 3a and the partition portion 3b formed around the inner box 3 are There will definitely be an intermission.

The above completes the fixing of the refrigerator's condensation prevention pipe. Therefore, with this fixing method, there is no need for the hassle of conventional fixing fittings, which are separate parts, and work efficiency is significantly improved. In addition, automation of work can be achieved, and the quality of products can be greatly improved.

As described above, the present invention temporarily fixes a long pipe for preventing condensation on a permanent magnet of a vacuum mold for forming an inner box, and places heat-softened synthetic resin on the temporarily fixed pipe and the vacuum mold. The inner box is vacuum-formed using a well-known vacuum forming method using a temporary sheet, and the pipe is integrally adsorbed and fixed to the peripheral flange and partition formed on the inner box, so that no condensation in the refrigerator can occur. To provide a method for fixing a pipe for preventing dew condensation of a refrigerator, which can easily and inexpensively fix a pipe for preventing condensation on a flange part of an inner box, and has constant quality.

[Brief explanation of the drawing]

1 to 5 relate to an embodiment of the present invention,
Figure 1 is a perspective view of the refrigerator body, Figure 2 is a vertical cross-sectional view of the vacuum forming mold, and Figures 3 and 4 show a pipe for preventing condensation placed in the vacuum mold before and after the vacuum forming process. An explanatory diagram showing the state, FIG. 5 is a cross-sectional view of the main part. 3... Inner box, 3a... Flange part, 3b... Inner partition part, 5... Condensation prevention pipe, 6... Vacuum forming mold, 6a... Flange forming part, 6b...・Inner partition molding section, 7...Permanent magnet.

Claims (1)

[Scope of Claims] 1. A long condensation prevention pipe is temporarily fixed on a permanent magnet of a vacuum mold for forming the inner box, and a synthetic resin heated and softened is placed on the temporarily fixed pipe and the vacuum mold. Condensation in a refrigerator characterized in that a sheet is temporarily installed, an inner box is vacuum-formed by a well-known vacuum forming method, and the pipe is integrally suctioned and fixed to a peripheral flange part and a partition part formed on the inner box. How to fix the prevention pipe. 2. A pipe for preventing dew condensation in a refrigerator according to claim 1, characterized in that a plurality of permanent magnets are embedded continuously or at predetermined intervals in the flange molding part and the partition molding part of the vacuum molding mold. fixing method. 3. A method for fixing a pipe for preventing condensation in a refrigerator as set forth in claim 1, wherein the pipe for preventing condensation is fixed during vacuum forming.