JPH05322435A - Refrigerator - Google Patents

Abstract

PURPOSE:To make it possible to fix a pipe especially which is embedded in a heat insulating material, concerning a refrigerator for general household use. CONSTITUTION:The title refrigerator is equipped with an outer box 11 with a back plate 7, a spacer 21 which is provided between the back plate 7 and an outer box back surface cover 13 being attached to the refrigerator through a space 17, and a heat insulating material 8 with which the space between the outer box 11 and an inner box 6 is filled, and on the spacer 21, a fastening claw 23 which extends in the heat insulating material 8 is formed, and at the same time, a suction pipe 5 is held by the fastening claw 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general household refrigerator, and more particularly to a technique for fixing a pipe embedded in a heat insulating material.

[0002]

2. Description of the Related Art Suction pipes that have been conventionally buried in a heat insulating material have a suction pipe such as an inner box or a back pipe as in the case of the NR-231TDR refrigerator sold by Matsushita Electric Industrial Co., Ltd. in October 1981. It is performed to prevent the dew condensation on the contact surface by contacting the plate.

A conventional refrigerator as described above will be described below with reference to the drawings. FIG. 4 is a sectional view of a conventional refrigerator. FIG. 5 is a cross-sectional view of FIG. Reference numeral 6 is an inner box of the refrigerator, and 7 is a back plate of the outer box, and a space thereof is filled with a heat insulating material 8. A heat insulating foam 9 such as a polyethylene foam is wound around the suction pipe 5 embedded in the heat insulating material 8 so as not to directly contact the inner box 6 and the back plate 7.

In the above refrigerator, the heat insulating foam 9
Thus, the suction pipe 5 can be prevented from directly contacting the inner box 6 and the back plate 7.

[0005]

However, in the above-mentioned structure, the location where the suction pipe comes into contact with the inner box or the back plate cannot be specified and the heat insulating foam is entirely wound around the portion embedded in the heat insulating material. It had the drawback of having to.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an inexpensive refrigerator which can prevent the suction pipe from contacting the inner box or the back plate without winding an insulating foam.

[0007]

In order to solve the above-mentioned problems, heat insulation is provided by an outer box having a back plate and a spacer provided between the outer plate and the back cover of the outer box mounted through the space and the space. The suction pipe is fixed by forming a locking claw extending to the material and holding the suction pipe on the locking claw.

[0008]

With the above-mentioned structure, the present invention can have a structure capable of preventing the suction pipe from contacting the inner box or the back plate without winding the heat insulating foam.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The same components as in the prior art will be designated by the same reference numerals and detailed description thereof will be omitted. As shown in FIG. 1, the cooler 4 housed in the back surface of the freezer compartment 1 has a suction pipe 5 welded in advance, and is placed in a heat insulating material 8 filled in the space of the inner box 6 and the back plate 7. It is buried and piped to the compressor 9. A capillary tube 10 is fixed to the suction pipe 5 so as to exchange heat by soldering. On the other hand, as shown in FIG. 2, the outer box 11 and the back plate 7 have a U-shape with protrusions 12 formed at both ends. Further, a condenser 14 is fixed to the outer case back plate cover 13 with aluminum foil 15 or the like, and a screw 16 is attached to the protrusion 12 of the back plate 7.
Fixed in.

At this time, the back plate 7 and the outer box back plate cover 13
A space portion 17 existing between and forms a ventilation duct for the heat radiated from the condenser 14. In the outer box top surface portion 18,
The grill 1 in which the air passing through the space 17 is discharged upward
Reference numeral 9 is a screw 20, and a space 17 for the back plate 7 and the outer box back plate cover 13 is provided with a space for preventing the outer box back plate cover 13 from sticking.
Prior to foaming the heat insulating material, the support 21 is attached to the central portion of the back plate 7 with the screws 22 at even pitches in the vertical position.

The spacer 21 is formed with a claw portion 23 protruding toward the heat insulating material 8 and capable of holding the suction pipe 5. The back plate 7 is provided with through holes 24 for installing the suction pipe 5 in the heat insulating material 8.
To the through hole 26 in the panel bottom 25 and the spacer 2
The suction pipe 5 is held in the claw portion 23 of the first through hole 24.
A cap 27 made of resin or the like having elasticity is fitted to the above, and the process proceeds to the step of foaming the heat insulating material.

Next, a second embodiment will be described. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

In such a construction, the back plate 7 generally tends to be convex at the center due to the foaming pressure as shown in FIG. By attaching the spacer 21 before foaming the heat insulating material as in the present invention, it is possible to surely prevent the blister in the central portion by the foaming jig and to secure it without reducing the area of the heat radiation space of the condenser 14 due to the blister. Not only the outer case back plate cover 13 that is attached after foaming is also attached without being affected by the blisters on the back plate 7, and there is an effect that the outer appearance becomes even and beautiful.

Further, the suction pipe 5 is securely held in the heat insulating material 8 by the claw portion 23 of the spacer 21, and has an advantage of preventing the occurrence of dew condensation which is brought into contact with the inner box 6 or the outer case back plate 7. .

[0016]

As described above, according to the present invention, by attaching the spacer for preventing the pecks on the back cover of the outer box before the foaming of the heat insulating material, the blister after foaming the back panel of the outer box is corrected to radiate the heat from the condenser. Preventing the area of the ventilation duct from decreasing and holding the suction pipe embedded in the heat insulating material with the claws of the spacers causes dew condensation that comes into contact with the inner box or outer box back plate. It has the advantage of preventing

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator according to a first embodiment and a second embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a cross-sectional view of a refrigerator in which the center of the back of the outer box is convex due to foaming pressure.

FIG. 4 is a sectional view of a conventional refrigerator.

FIG. 5 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 5 Suction pipe 6 Inner box 7 Back plate 8 Insulating material 11 Outer box 13 Outer box back cover 17 Space 21 Spacer 23 Locking claw

Claims (2)

[Claims] 1. An outer box having a back plate, a spacer provided between the back plate and the back cover of the outer box mounted via a space, and heat insulation filled between the outer box and the inner box. And a suction pipe formed on the spacer, the locking claw extending into the heat insulating material is formed on the spacer, and the suction pipe is held by the locking claw. 2. The space having integrally a locking claw for holding the suction pipe in a predetermined position in the heat insulating material.
The refrigerator according to claim 1, wherein a structure is provided between the back plate and the back cover of the outer box to prevent deformation of the back cover of the outer box.