JPS63318472A - 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 Field of the Invention The present invention relates to a refrigerator equipped with a heat dissipation tube in the front opening of the main body to prevent installation.

BACKGROUND OF THE INVENTION In recent years, a high-temperature heat dissipation pipe, which is part of a refrigeration cycle, has been installed on the front periphery of a refrigerator to prevent dew formation.

The arrangement structure of the conventional heat dissipation pipe for preventing installation of the refrigerator will be described below with reference to the drawings.

FIG. 3 to FIG. S show the arrangement structure of heat dissipation pipes of a conventional refrigerator.

1 is a refrigerator main body, 2 is an outer box, and 3 is an inner box, and a foamed heat insulating material 4 is filled between the outer box 2 and the inner box 3. or,
A partition wall 6 divides the compartment into a freezing compartment 6 at the top and a refrigerating compartment 7 at the bottom.

The front edge opening of the outer box 2 is formed by roll former forming into an outer flange 2a, a folded flange 2b which is folded back on the back side of this outer flange 2a, and a bent portion 2C1 of the folded flange 2.
An inner flange 2d extends parallel to b at a predetermined distance.
It forms a double flange consisting of The opening flange 3a of the inner box 3 is inserted into the double flange of the outer box 2 via a sealing member 8. 9 is inside the double flange,
That is, it is a heat dissipation pipe of the refrigeration cycle inserted into the space between the folded flange 2b and the inner flange 2C.

The operation of the refrigerator configured as described above will be explained below.

As for the area near the front edge of the outer box 2 of the refrigerator, the heat from the outer box is conducted from the outer flange 1a to the folded flange 2b to the inner box 3 and into the low-temperature interior of the refrigerator, so the temperature is very low compared to the outside temperature. This results in dew formation. For this reason, the heat dissipation pipe 9, which is hot during the refrigeration cycle, is disposed within the double flange to conduct heat to the outer box 2, thereby preventing dew formation in this portion.

Problems to be Solved by the Invention ``However, in the above configuration, not all of the heat radiated by the heat radiating pipe 9 inserted into the double flange is radiated to the outside through the outer box 2. 20 to 30% of the total heat radiation often enters the freezer compartment 6 and refrigerator compartment 7 inside the heat insulating box, reducing cooling efficiency.

This is because part of the heat emitted by the heat dissipation pipe is transferred from the folded flange 2b to the inner box 3, and from the inner flange 2d through the insulation material 4, which has a narrow gap with the inside of the refrigerator. This is because a path for entry into the compartment 6 or the refrigerator compartment 7 is formed.

In addition, the bent portion 2 of the double flange that the heat radiation pipe 9 comes into contact with
c and the outer box 2 do not come into close contact with each other, creating a gap and resulting in a non-contact state. Therefore, it is not possible to sufficiently increase the heat radiation ratio in the direction of the outer box 2, which is originally desired, and the direction of the double flange Since the ratio of heat radiation to the inside of the refrigerator increases, the above-mentioned heat intrusion into the refrigerator cannot be suppressed.

In order to solve these problems, the heat dissipation pipe 9 is removed from the double flange and placed in contact with the outer box 2, as shown in FIG. It has also been considered to fix the heat dissipation pipe 9 with a heat dissipation pipe (not shown).

However, in the case of such a heat-insulating box for a refrigerator, a reinforcing plate 11 is fixed to the rear surface of the inner flange 2d to ensure the strength of the heat-insulating box, and this reinforcing plate 11 is usually attached to the outer box (plate). It is sufficiently thicker (plate thickness 2 to 36) compared to 06W)
It has a structure.

Therefore, if the heat dissipation pipe 9 is placed above this,
The desired heat conduction to the outer box 2 may not be achieved, or
Damage to the heat dissipation pipe 9 caused by the end 11a of the reinforcing plate 11;
There was a possibility that bending etc. would occur.

Furthermore, in the work of placing the heat dissipation pipe 9, if there is no separate fixing tape (not shown) etc. after casting and before applying the thermoplastic resin 10, etc., problems such as displacement or reduction of the position of the heat dissipation pipe 9 may occur. There are points and costs.

It was also bad in terms of workability.

The present invention has been made in view of the above points, and prevents the pipe from being damaged or bent at the part where the reinforcing plate is fixed, and also positions and fixes the pipe during assembly work to ensure that the heat dissipation pipe comes into contact with the outer box. To provide a refrigerator that increases the heat radiation ratio in the direction of the outer box.

Means for Solving the Problems In order to solve the above-mentioned problems, the refrigerator of the present invention replaces the heat dissipation pipe in the portion that contacts the outer box from which the double flange has been removed with the double flange at the front corner of the top surface of the outer box. The reinforcing plate is bent before reaching the end of the reinforcing plate fixed to the rear surface of the pipe, and the abutting portion formed on the reinforcing plate is brought into contact with the bent portion of the heat dissipation pipe.

Effects The present invention has the above-described configuration, which increases the heat radiation ratio in the direction of the outer box, prevents the pipe from being damaged or bent at the part where the reinforcing plate is fixed, and further improves the positioning and fixing of the pipe during assembly work. By doing so, no additional materials are required.

EXAMPLE Hereinafter, a refrigerator according to an example of the present invention will be described with reference to the drawings. Incidentally, the same parts as those in the prior art are denoted by the same reference numerals, and the description thereof will be omitted.

In Figs. 1 and 2, 12 is an outer box, and the front edge opening is roll-formed to the outside':)y Fuji 12a,
A folded flange 12b folded back on the back surface of the outer flange 12a, a bent portion 12c, and an inner flange 12d extending parallel to the folded flange 12b at a predetermined distance are formed. A reinforcing plate 11 extending rearward is fixed to the inner flange 12d by spot welding.

13 is a heat dissipation pipe, which is bent before reaching the end 11a of the reinforcing plate 11, and a part 1 of this bent portion 13a
3b is elastically positioned at the contact portion 11b of the reinforcing plate 11, and is arranged so as to contact the outer box 12 behind the inner flange 12d. Furthermore, in order to improve heat conduction to the outer box 12, it is fixed with a thermoplastic resin 1o (hereinafter referred to as hot melt) having good thermal conductivity.

As described above, according to this embodiment, in the portion corresponding to the reinforcing plate 11, the heat radiation pipe 1 is formed by the end surface 11a of the reinforcing plate 11.
3 from being scratched or bent, it is also possible to prevent deterioration of heat conduction to the outer box 2 due to the reinforcing plate 11, and the reinforcing plate 1
The heat dissipation pipe 1 due to the step caused by the end 11a of
It is possible to prevent non-contact and floating of the inner flange 12d of No. 3 and the outer box 12, and the contact portion 11 of the reinforcing plate 11
Since the heat dissipation pipe 13 is elastically arranged at position b, it can reliably come into contact with the outer box 12 behind the inner flange 12d, so that the hot melt 1o actively conducts the outside air to the outer box 12. Improves heat dissipation to. Furthermore, there is less heat conduction to the outer flange 12a, folded flange 12b, and inner flange 12d, and the heat that enters the inside of the refrigerator can also be reduced.

Although hot melt 1o is applied in this example, the same effect can be obtained by using a tape of good thermal conductivity such as aluminum foil.

Advantages of the Invention As described above, the present invention provides a portion that abuts the outer box from which the double flange has been removed before reaching the end of the reinforcing plate fixed to the rear surface of the double flange at the front corner of the top surface of the outer box. The heat dissipation pipe is bent and the contact part formed on the reinforcing plate is brought into contact with the bent part of the heat dissipation pipe, which prevents the heat dissipation pipe from coming into contact or floating due to the step at the end of the reinforcing plate. Because the heat dissipation pipe can be positioned elastically and reliably, the heat from the heat dissipation pipe is efficiently conducted to the outer box, increasing the amount of heat dissipated to the outside air, and at the same time being conducted from the folded flange and inner flange to the inside of the refrigerator. Since the amount of heat that enters is suppressed, it not only improves heat dissipation efficiency, but also prevents damage and bending of the heat dissipation pipe, and also makes it easy to fix and position the pipe during work. .

[Brief explanation of drawings]

FIG. 1 is a perspective view of an outer box of a refrigerator showing an embodiment of the present invention, viewed from inside the refrigerator, FIG. 2 is a perspective view of the refrigerator shown in FIG. 1, and FIG. 3 is a perspective view of a conventional refrigerator. Figure 4 is B of Figure 3.
6 is a sectional view taken along line CC' in FIG. 3 of another conventional example. 3...Inner box, 11...Reinforcement plate, 12...
...Outer box, 12a...Outer flange, 12
b...Folded flange, 12d...Inner flange, 13...Radiation pipe, 13a...
...Bent part, 11a...End part, 11b...
...Abutment part. Name of agent: Patent attorney Toshio Nakao and 1 other person11
- Slightly filtered 13α-fold #ku 3-inside food 71-1 supplementary Kaneogi Fig. 2 Fig. 3

Claims (1)

[Claims] An outer box with a double flange formed on the front opening edge, an inner box with a flange on the opening edge inserted into the double flange, a heat dissipation pipe for preventing dew formation, and two on the front corner of the top surface of the outer box. It consists of a reinforcing plate fixed to the rear surface of the heavy flange, and the heat dissipation pipe has a part disposed inside the double flange on one side of the outer box, and a part that contacts the outer box from which the double flange is removed. The refrigerator is characterized in that the reinforcing plate is bent before reaching an end portion thereof, and the bent portion is brought into contact with an abutting portion formed on the reinforcing plate.