JPS6022316Y2 - refrigerator - Google Patents

Description

[Detailed description of the invention] Conventionally, an inner box 8 is charged from the back side of an outer box 1 whose back side is open, and the outer flange surface of the inner box 8 is brought into contact with the inner surface of the flange of the outer box 1, and the outer box 1 is In a refrigerator in which a foamed insulation material 6 is filled between the outer box 1 and the inner box 8, the foamed insulation material 6 is integrally joined to the outer box 1 and the inner box 8 by its own adhesive force. However, the foamed heat insulating material 6 is easily peeled off in a part of the corner of the heat insulating box where the inner surface of the side plate close to the flange 2 of the outer box 1 and the tip of the flange 9 of the inner box 8 are adjacent.

When a force such as an external impact force or thermal contraction of the foamed heat insulating material 6 is applied to such a material, it may peel off from this portion, that is, a part of the corner (corner portion).

Once peeling occurs between the inner surface of the side plate close to the flange 2 of the outer box 1 and the foamed insulation material 6, further peeling starts from this point, eventually resulting in a state as shown in Fig. 3. There was a drawback that a gap was created between the flange 2 of the outer box 1 and the flange 9 of the inner box 8.

When the heat insulation box cools down and the foam insulation material 6 heat-shrinks, the side wall portion of the outer box at the boundary X between the peeled part of the foam insulation material 6 and the tightly adhered part is caused to shrink in the longitudinal direction. A resultant force called vector C acts on the force that tends to shrink, vector a, and the force that causes the back wall to shrink inward (in the longitudinal direction), vector b, and as a result, the side plates of the outer box 1 move inward. curved, and on the other hand, on the flange 2 side, the outer box 1
Since the inner box tries to return to its original state with its own restoring force, a gap is created between the flange 2 and the flange 9 of the inner box 8, which has the drawback of causing cold air leakage and deteriorating the appearance. It was.

The present invention has been devised to eliminate the above-mentioned drawbacks and will be explained in detail below with reference to an embodiment shown in the drawings.

Incidentally, the same parts between the present invention and the conventional one are indicated by the same reference numerals.

Reference numeral 1 is an outer box with an open back side, made of a metal material, and a flange 2 is formed by bending the periphery of the front opening inward, and the tip of the flange 2 is further bent in the same direction as the side plate. A bent piece 3 is formed, and a storage part 4 is formed between this bent piece 3 and the outer box side plate.

Reference numeral 5 designates a condensing pipe that is housed in the storage section 4 and serves to prevent dew from forming on the outer periphery of the outer box 1 by passing high-temperature refrigerant gas. A sealing material 7 is provided to prevent the foamed heat insulating material 6 from flowing into the section 4 .

Reference numeral 8 designates an inner box that is inserted from the back side of the outer box 1 to form an appropriate gap between it and the outer box 1, and a flange 9 that is joined to the inner surface of the flange 2 of the outer box 1 is provided at the front opening edge of the inner box. At the same time, a pressing portion 10 for pressing the sealing material 7 is formed at the tip of the flange 9.

Reference numeral 11 is made of a material (for example, a soft foamed resin) that is an adsorbent pasted with an adhesive or the like on the inner surface of the side plate near the flange 2 of the outer box 1 and that provides good adhesion to the foamed heat insulating material 6. , is provided to prevent the foamed heat insulating material 6 from peeling off from the side plate close to the flange 2 of the outer box 1.

Here, the assembly and operation of the refrigerator of the present invention will be explained.

First of all, when assembling the refrigerator body, the outer box 1
A condensation pipe 5 for preventing condensation is installed in the storage section 4 formed at a part of the corner of the flange 2, and a sealing material 7 is installed on top of the condensation pipe 5, and then the inner box 8 is inserted from the back side of the outer box 1. Then, the flange 9 of the inner box 8 is brought into contact with the inner surface of the flange 2 of the outer box 1, and the pressing part 10 of the flange 9 is brought into pressure contact with the upper surface of the sealing material 7, and then the outer box 1 and the inner The foamed heat insulating material 6 may be filled and foamed between the box 8 and the box 8.

At this time, since an adsorbent 11 is attached to the inner surface of the side plate near the flange 2 of the outer box 1 to improve adhesion to the foamed heat insulating material 6, the inner surface of the side plate is bonded to the inner surface of the side plate through the adsorbent 11. The foamed heat insulating material 6 is firmly fixed.

Therefore, even if the foam insulation material 6 shrinks due to heat, there will be no separation between the foam insulation material 6 and the front side plate of the outer box 1, and therefore, there will be no possibility that the foam insulation material 6 will peel off from the front part of the side plate of the outer box 1. Since no heat shrinkage force is applied, there is no possibility that the central portion of the outer box 1 is curved and a gap is created between the flange 2 of the outer box 1 and the flange 9 of the inner box 8 as in the conventional case.

Since the present invention is constructed as described above, even if the foamed insulation material shrinks due to heat during filling and foaming between the outer box and the inner box, the flange of the outer box and the flange of the inner box will remain intact. There are no gaps between the absorbers, and the conventional drawbacks of cold air leaking through the gaps and unsightly appearance can be completely eliminated, and the adsorbent is made of soft foamed resin. Therefore, the adhesion with the foamed heat insulating material becomes even better, and the heat shrinkage force of the foamed heat insulating material can be more effectively distributed, which is a remarkable effect.

[Brief explanation of drawings]

Figure 1 is a front view of the refrigerator of the present invention with the door removed, Figure 2 is a sectional view taken along line A-A' in Figure 1, and Figure 3 is a partial sectional view of a conventional refrigerator corresponding to Figure 2. It shows. 1: Outer box, 2: Flange, 6: Foam insulation material, 8: Inner box,
9: flange, 11: adsorbent.

Claims (1)

[Scope of utility model registration request] Insert the inner box from the back of the outer box, which has an open back, and bring the outer surface of the flange of the inner box into contact with the inner surface of the flange of the outer box, and fill the space between the outer box and the inner box with foam insulation material. This refrigerator is characterized in that an adsorbent made of a soft foamed resin is pasted on the inner surface of the side plate close to the flange of a metal outer box to improve the adhesion of the foamed heat insulating material.