JPS6023667Y2 - refrigerator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a refrigerator in which a heat insulating box is formed by injecting and foaming a foamable heat insulating material into the gap between an outer box and an inner box.

Conventionally, in this type of refrigerator, as shown in Fig. 1, the electric wire 1, refrigerant pipe 2, and frost water drainage pipe 3 are each pulled out of the refrigerator through separate holes on the surface of the outer box 4, and each hole is sealed. Some were filled with material and sealed.

Note that 5 is an electrical equipment storage box. In such a structure, the electric wire 1, refrigerant pipe 2, and frost water drainage pipe 3 are passed through each hole and sealed before foaming, which makes it difficult to assemble the refrigerator, and there are many holes, so the sealing performance is poor. There were problems such as leakage of the foam insulation material due to variations in the temperature.

In addition, as shown in Japanese Utility Model Application Publication No. 48-27454, bushings were fitted to the electric wires and refrigerant pipes, and the cover with these bushings fitted was fitted into the outer box outlet hole and fixed. However, since the bushings had to be fitted one by one into the holes in the cover, there was a problem in that the workability when assembling the refrigerator was poor.

Furthermore, as shown in Utility Model Publication No. 43-30304,
Some pipes were fitted into one bushing, and this bushing was fitted into the outlet hole of the outer box. However, with such a model, it was difficult to fit the bushing into the outlet hole of the outer box, so it was difficult to assemble the refrigerator. There was a problem with bad sex.

This invention was made in order to solve the problems of the conventional ones mentioned above.It improves the bushing, cover, and its attachment to the outer box outlet hole, and improves workability when assembling the refrigerator. The object of the present invention is to provide a refrigerator in which the sealing properties of the heat insulating material are also good.

That is, in this invention, the parts corresponding to the outlet of the outer box, such as the refrigerant piping and the frost water drainage pipe, are fitted all at once into a bushing that is shorter on one side than the outlet hole of the outer box, and this push is fitted into the outlet hole of the outer box. Then, the remaining part of the outer box outlet hole adjacent to the bushing and into which the bushing is fitted is covered with a cover.

Therefore, in this invention, the outlet hole of the outer box can be made larger than the bushing, and parts such as electric wires, refrigerant piping, frost water intake and drainage pipes, etc. attached to the inner box when assembling the refrigerator can be fitted into the bushing all at once, and the inner box can be fitted into the bushing. When assembling the above-mentioned parts into the outer box, when passing the above-mentioned members through the outer box exit hole, even if the exit hole is on the bottom or back of the outer box and it is difficult for the worker to insert his/her hand into the inner box and pass it through the exit hole, the exit hole Because it is large, it can be easily passed through, and it only needs to be passed through once.Furthermore, by simply moving the bushing to one side of the exit hole, there is no need to pass the bushing through the cover. Since the outlet hole is covered with the bushing and the cover, the foamed heat insulating material does not leak from the outlet hole, and its sealability is good.

An embodiment of this invention will be described below with reference to FIGS. 2 to 4.

Figures 2a and 2b are a plan view and a sectional view taken along A-A of the rubber bushing 6 used in the refrigerator of this invention. hole? , 8.9, and has a cylindrical shape with fins 10 on the peripheral wall and outer wall of the hole.

FIGS. 3a and 3b are a plan view and a BB sectional view of the rubber bushing 6 attached to the bottom plate 11, and the rubber bushing 6 houses the electric wire 12, the refrigerant pipe 13, and the frost removal hydroponic water pipe 14. After the inner box is assembled into the outer box, the rubber bushing 6 is fitted into the outlet hole 15 of the outer box bottom plate 11.

At this time, the width C of the outlet hole 15 of the outer box is made smaller than the width d of the rubber bushing 6 to increase the sealing effect, and the vertical width e is made sufficiently larger than the vertical width f of the rubber bushing 6 so that the comb bushing 6 is used during the pre-foaming operation. so that it can be easily inserted into the exit hole 15 of the outer box.

Note that 16 indicates an inner box.

After the rubber bushing 6 is fitted into the outer box exit hole 15, the rubber bushing 6 is moved to one side of the exit hole 15, and the portion of the exit hole 15 other than that covered by the rubber bushing 6 is made of plastic as shown in FIGS. 4a and 4b. Using the cover 17, compress the rubber bushing 6 on one side of the flange 17a of the cover and align it with the outer box outlet hole 15 in a state adjacent to the rubber bushing.
It is fixed around the exit hole of the outer box using a hook method using screws, claws, etc.

Further, at this time, if a soft sealing tape or the like is adhered to the flange 17a of the cover 17, the sealing performance is further improved.

After this, a foam insulation material is filled between the outer box 4 and the inner box 16 to form a refrigerator cabinet.

By sealing the outer box outlet holes of electric wires, refrigerant piping, and frost removal water culture pipes using this method, the fins provided on the rubber bushings not only ensure that the foam insulation material does not leak. , the sealing work before foaming becomes very easy, which also makes a large contribution to cost reduction.

In addition, in refrigerators with a condenser embedded in the back wall without exposing the condenser to the back, electric wires, refrigerant piping (especially compressor suction pipes), frost removal water culture pipes, etc. are not exposed on the back of the outer box. Since it is necessary to store them all in isolation in the machine room at the bottom of the back of the outer box, connect the wiring, refrigerant pipes,
The effect of this embodiment, in which a pipe for frost removal water cultivation is provided, is very large.

As explained above, according to this invention, when the inner box is assembled into the outer box, by making the outer box exit hole larger than the bushing, the bushing can be easily fitted into the exit hole, and moreover, the bushing can be easily fitted into the bushing. Since this is for fitting parts such as electric wires, refrigerant piping, frost removal water culture pipes, etc. all at once, it is only necessary to fit one bushing into one outlet hole once, and then fit the bushings of the outlet hole with a cover. Since it covers the remaining part adjacent to the cover, there is no need to pass bushings etc. through the cover, making it easier to assemble the refrigerator.Also, since the outlet hole is covered by the cover and bushings, foam insulation material can be used. The effect is that there is no leakage from the exit hole and the sealing performance is good.

[Brief explanation of drawings]

Figure 1 is a perspective view showing how to take out conventional electric wires, refrigerant piping, and frost removal hydroponic water pipes from the back of the outer box, and Figures 2 a and b.
3A and 3B are plan views showing the shape of a bushing according to an embodiment of this invention and sectional views taken along line A-A, and FIGS. Figures 4A and 4B are sectional views taken along line B-B, and Figures 4a and 4b are plan views showing the sealing state of the outlet of the outer box by the combination of the bushing and the cover according to an embodiment of the invention, and
-C sectional view. The same reference numerals in the drawings indicate the same or equivalent parts, 4 is the outer box, 6 is the bush, 10 is the fin, 15 is the outer box exit hole, 1
7 is a cover.

Claims (1)

[Scope of utility model registration request] For refrigerators in which a foam insulation material is injected into the gap between the outer box and the inner box to form an insulation box body, it is used for electric wires, refrigerant piping, and frost water drainage that pass between the foam insulation materials and exit outside the outer box. Parts of members such as pipes corresponding to the outer box outlet are all fitted into a bushing whose side is shorter than the outer box exit hole, this bushing is fitted into the outer box exit hole, and the bushing is placed adjacent to the bushing. A refrigerator characterized in that the remaining part of the fitted outer box outlet hole is covered with a cover.