JPS61285368A - 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 having a heat dissipation pipe to prevent frost formation in the front opening of the main body.

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 heat dissipation pipe for preventing frost formation in the above-mentioned conventional refrigerator will be described below with reference to the drawings.

4 to 6 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 on the outside 2 by roll former molding.
A flange 2a, a folded flange 2b folded back on the back surface of the outer flange 2&, and a bent portion 2a.

A double flange is formed by an inner flange 2d extending parallel to the folded second flange 2b at a predetermined distance. 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.

Reference numeral 9 denotes a heat dissipation pipe of the refrigeration cycle inserted within the double flange, that is, within 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.

Regarding the area near the front edge of the outer box 2 of the refrigerator, the heat of the outer box is conducted from the outer flange 1a to the folded flange 2b to the inner box 3 to the low-temperature interior, 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, the heat dissipated by the heat dissipation pipe 9 inserted into the double flange is generally carried out entirely through the outer box 2.
2 of the total amount of heat dissipated.
0 to 30% often enters the freezer compartment 6 and refrigerator compartment 7 inside the insulated box, reducing cooling efficiency.

This is because a part of the heat emitted by the heat dissipation pipe is conducted from the fold 7/ji 2b to the inner box 3, and from the inner flange 2d to the heat insulating material 4, which has a narrow gap with the inside of the refrigerator. This is because a path is formed through which the liquid enters the freezer compartment 6 and the refrigerator compartment 7.

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. 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). Thickness is about 0.6m).
m) It has a structure.

Therefore, if the heat dissipation pipe 9 is placed above this,
The desired heat conduction to the outer box 2 could not be obtained, and
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 installation work of the heat dissipation pipe 9, if there is no separate fixing tape (not shown) etc. after the arrangement and before the application of the thermoplastic resin 10, etc., the position of the heat dissipation pipe 9 may shift or decrease. The problem is the cost.

It was also bad in terms of workability.

In view of the above-mentioned problems, the present invention provides a refrigerator that suppresses the rate of heat intrusion into the refrigerator through the heat radiation pipe and improves the efficiency of heat radiation to the outside air.

Means for Solving the Problems In order to solve the above-mentioned problems, the refrigerator of the present invention includes a heat dissipation pipe in the double flange at the part where the reinforcing plate is fixed to the inner flange and in the vicinity thereof, and in other parts. It has a structure in which the double flange is brought into contact with the removed outer box.

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 to 3, 12 is an outer box, and the front edge opening is formed into an outer flange 12a by roll former molding, and a folded flange 1 folded back on the back side of this outer flange 12a.
2b1 bent portion 12C1 forms an inner flange 12d extending parallel to the folded flange 12b at a predetermined distance;
A reinforcing plate 11 extending rearward is fixed to 2d by spot welding. In addition, the inner franchise 2d is the reinforcing plate 1
Notches 12e are provided near both sides of the first mounting portion. Reference numeral 13 designates a heat dissipation pipe, which has a bent portion 13a at a portion corresponding to the cutout portion 12e of the inner flange 12d. It is arranged so as to abut the bent portion 120, and the inner flange 12 is disposed at other portions.
It is arranged so as to come into contact with the outer box 12 at the rear of d. 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&'C, the folded flange 12b and the inner flange 1
A heat dissipation pipe 13 is arranged between 2d, and a reinforcing plate 11
Not only can damage and bending of the heat dissipation pipe 13 caused by the end surface 11a of the heat dissipation pipe 13 be prevented, but also deterioration of heat conduction to the outer box 2 due to the reinforcing plate 11 can be prevented. In addition, other parts of the heat dissipation pipe 13 are in direct contact with the outer box 12, and the hot melt 10
The heat is actively conducted to the outer box 12, resulting in good heat dissipation to the outside air. Furthermore, there is little heat conduction to the outer flange 12a, folded flange 12b, and inner flange 12d,
Heat intrusion into the refrigerator can also be reduced.

In addition, the bent portion 13& of the heat dissipation pipe 13 is connected to the inner flange 1.
2d corresponding to the notch 12e, the heat dissipation pipe 1
3. During the casting work, positioning can be done, and the reinforcing plate 11
Since the corresponding portion is disposed between the folded flange 12b and the inner flange 12d, it is possible to prevent displacement or fall after disposing.

In this example, the hot melt 10 is applied, but the same effect can be obtained by using a tape made of aluminum foil or the like with good thermal conductivity.

Effects of the Invention As described above, the present invention provides heat dissipation pipes within the double flange at the portion where the reinforcing plate of the inner flange is fixed and in the vicinity thereof, and the outside pipe which is removed from the double flange at the other portions. Since it is in contact with the box, the heat from the heat dissipation pipe is efficiently conducted to the outer box, thereby increasing the amount of heat dissipated to the outside air, and at the same time, it is conducted from the folding flange and inner flange to the inside of the refrigerator. Since the amount of heat that enters is suppressed, not only the heat dissipation efficiency is improved, but also the heat dissipation pipe is prevented from being damaged or broken, and furthermore, the pipe can be easily fixed and positioned during work, which has a great effect.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the outer box of a refrigerator showing an embodiment of the present invention as seen from the inside of the refrigerator, Fig. 2 is a perspective view of the refrigerator shown in Fig. 1, and Fig. 3 is Fig. 2'A- A' is a cross-sectional view, FIG. 4 is a perspective view of a conventional refrigerator, and FIG. 6 is a cross-sectional view of B- in FIG.
A sectional view taken along line B, FIG. 6 is C in FIG. 4 of another conventional example.
It is a sectional view taken along the -C/ line. 3...-inner box, 11... reinforcing plate, 12...
- Outer box, 12a... Outer flange, 12b...
...Folded flange, 12d...Inner flange, 13... Heat dissipation pipe. Name of agent: Patent attorney Toshio Nakao (1 person)
3---Hoseibaigzc 12-m-Tatota 11 13-One hand (Spiciness is high 0ia''' 13--Ichirao High Live. Fig. 4 Fig. 5

Claims (1)

[Claims] an outer box with a double flange formed on the front opening edge; an inner box with the opening edge flange inserted into the double flange; a heat dissipation pipe for preventing dew formation; and a heat dissipation pipe fixed to the rear surface of the double flange. The heat dissipation pipe is in contact with the double flange at the part where the reinforcement plate is fixed and the vicinity thereof, and the other part is in contact with the outer box removed from the double flange. A refrigerator characterized by: