JPH0127028Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drainage structure in a cooling device such as a refrigerating case or a refrigerator.

In the conventional drainage structure, a drainage pipe 1' is passed through a heat insulating block 9 and exposed from the outer box 5, as shown in FIGS. ing. However, such a structure requires two parts, the pipe 1' and the heat insulating block 9, which is unfavorable in terms of cost and parts management. Therefore, in recent years, a drainage structure as shown in Fig. 3 has been proposed. In this structure, a lower edge flange 1b is integrally formed in the longitudinal direction of a drainage pipe 1' having a flange 1a on the upper edge, parallel to the upper edge flange 1a and spaced apart from the upper edge flange 1a. Since it also has a drainage function, it has the advantage of being low cost.

On the other hand, in general, the thickness of the heat insulating walls of freezer cases, refrigerators, etc. varies in terms of internal insulation. That is, in a freezer the wall thickness is relatively large and in a refrigerator the wall thickness is relatively small. Therefore, in the drainage structure shown in Fig. 3, it is necessary to prepare several types of drainage pipes with different distances from the upper edge flange to the lower edge flange in order to correspond to various types of cases, and the injection molding mold must be manufactured each time. There was a drawback that I had to do something about it.

Therefore, an object of the present invention is to provide a drainage structure that can be adapted to several types of shower cases while taking advantage of the advantages of the drainage structure that has both a spacer function and a drainage function.

Embodiments will be explained below with reference to FIGS. 4, 5, and 6 showing examples.

First, reference numeral 1 is a funnel-shaped drainage pipe, which has a flange 1a at its upper edge, and is made of a resin material. Further, a spacing member 2 is formed in the longitudinal direction of the drain pipe 1 in parallel with the upper edge flange 1a and spaced therebetween. By the way, the spacer 2 is composed of a plurality of flanges 21, 22, and 23. The flanges 21 and 22 are parallel to each other and spaced apart from each other, and the upper flange, for example flange 21, is set to have a larger diameter than the lower flange, for example flange 22.

Further, reinforcing plates are provided between the upper edge flange 1a and the uppermost flange 21 of the spacer 2 and between the flanges 21-22, 22-23 of the spacer 2 in a direction perpendicular to the flange surface. Here, the outer box 5 is provided with a drainage pipe through hole 7,
A drain port 6 is provided in the inner box 4, and a heat insulating material 8 is filled between the outer box 5 and the inner box 4.

In the embodiment constructed as described above, when the inner box 4 is set in the outer box 5, the upper edge flange 1a of the drain pipe 1 comes into contact with the periphery of the drain port 6 of the inner box 4, and the plurality of flanges 21, 22, One of the holes 23 is brought into contact with the periphery of the drain pipe through hole 7 of the outer box 5.

As a result, if the case is frozen, the lowermost flange 2 as shown in Figure 6a and b.
3 or the flange 22 is placed on the top surface of the outer box 5, and if the container is for refrigeration, the uppermost flange 21 is placed on the top surface of the outer box 5 as shown in FIGS. 6c and 6d. Furthermore, even if the inner box is relatively heavy, the reinforcing plate 3 is interposed between the upper edge flange 1a and the flange 21 and between the flanges 21-22, 22-23, so that the inner box 4 and the outer box are always connected. The interval between 5 and 5 is kept constant.

In addition, in the above-mentioned embodiment, 3 is used as the spacer 2.
Although three flanges 21, 22, and 23 are shown attached to the drain pipe 1, it goes without saying that two or four or more flanges may be provided.

As described above, the present invention has the upper edge flange 1 in the longitudinal direction of the drain pipe 1 having the flange 1a on the upper edge.
The spacing member 2 is formed of a plurality of flanges that are parallel to a and are spaced apart from each other with a gap in between, and the lower flange has a larger diameter than the lower flange, and The upper edge flange 1a of the pipe 1 is brought into contact with the periphery of the drain port 6 of the inner box 4, while one of the plurality of flanges 21, 22... is brought into contact with the periphery of the drain pipe through hole 7 of the outer box 5. Because of the characteristic drainage structure of the cooling device, it is possible to maintain a constant distance between the inner box and the outer box by changing the diameter of the through hole in the outer box.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the drainage structure of a conventional freezing or refrigerating case, Fig. 2 is an exploded perspective view of the drain pipe portion in Fig. 1, and Fig. 3 is a perspective view of the drain pipe in another conventional example. Fig. 4 is a perspective view of the drainage pipe portion in the embodiment of the present invention, Figs. 5 a to e are similar structural explanatory views, and Fig. 5 a
is a plan view, FIG. 5b is a side view, FIG. 5c is a sectional view taken along the line AA in FIG. 5a, FIG. It is a sectional view taken along the line CC of FIG. FIGS. 6a to 6d are explanatory diagrams of the operation. Note that equivalent parts between the conventional example and the embodiment of the present invention are given the same reference numerals. DESCRIPTION OF SYMBOLS 1... Drain pipe, 1a... Upper edge flange, 2... Spacing body, 21-23... Flange,
3... Reinforcement plate, 4... Inner box, 5... Inner box, 6... Drain port,
7...Drainage pipe through hole, 8...Insulating material.

Claims (1)

[Claims for Utility Model Registration] (1) A drainage pipe having a flange on its upper edge, which is parallel to the upper edge flange in the longitudinal direction and spaced apart from each other, with the upper flange facing downward. A plurality of flanges having a larger diameter than the side flanges are formed as spacing members, and while the upper edge flange of the drain pipe is brought into contact with the drain outlet periphery of the inner box, one of the plurality of flanges A drainage structure for a cooling device, characterized in that the drain pipe is brought into contact with the periphery of a drainage pipe through hole in an outer box. (2) Utility model registration claimed in claim 1 in which a reinforcing plate standing vertically is interposed between the flange of the upper edge and the uppermost flange of the spacer and between the flanges of the spacer. cooling system drainage structure.