JPH01150780A - Refrigerator - Google Patents

Abstract

PURPOSE: To firmly fix a heat radiating pipe for preventing dewing and, at the same time, surely prevent the front edge section of an outer box of a refrig erator from being dewed and reduce the power consumption of the refrigerator by firmly fixing the heat radiating pipe so that the pipe may come into contact with the rear surface of the double flange of the outer box by means of a pipe holding section to which the heat-conduction sealer of a fixture is adhered. CONSTITUTION: The front edge opening of the outer box 11 of a refrigerator forms an outer flange 11a, a folded flange 11b, and an inner flange 11d. A fixture 13 on which a guide section 13c, a pipe holding section 13b, and a heat- conduction sealer 14 fitted to the surface of the holding section 13b are formed is mounted on the double flange of the outer box 11 and a heat radiating pipe 12 is fixed to the fixture 13 so that the pipe 12 may come into contact with the rear surface of the double flange. Then the sealer 14 is melted by heating the pipe 12 and the gap between the pipe 12 and fitting 13 is filled up with the sealer 14. Therefore, the heat radiating pipe 12 can be fixed firmly and, at the same time, the front edge section of the outer box 11 can be prevented surely from being dewed and, at the same time, the power consumption of the refrigerator can be reduced.

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 has been installed on the front periphery of a refrigerator to serve as a condenser for the refrigeration cycle and to prevent frost formation. An example of the arrangement specifications of the heat dissipation pipe of the conventional refrigerator mentioned above will be described below with reference to the drawings.

Figures 3 and 4 show the layout specifications of heat dissipation pipes for conventional refrigerators.

1 is the main body of the refrigerator, 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. Further, the interior partition 6 is divided into a freezer compartment 6° at the top and a refrigerator compartment 7 at the bottom, and 8 is the front plate of the interior partition 5.

The front edge opening of the outer box 2 is roll-formed to form an outer flange 2a, a folded flange 2b folded back on the back surface of the outer flange 2a, and a bent portion 2c.

A double flange is formed by the folded flange 2b and an inner flange 2d extending parallel to each other at a predetermined distance. The inner box 3 has its opening flange 3a inserted into the double flange of the outer box 2 via a sealing member 9.

1Q is a heat dissipation pipe in the refrigeration cycle inserted within the double flange, that is, within the space between the folded flange 2b and the inner flange 2d, and the part corresponding to the partition S on the - side extends to the back surface of the front plate 8. ing.

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

In the vicinity of the front edge of the outer box 2 of the refrigerator, the heat from the outer box 2 is conducted from the outer box 2 to the inner box 3 to the low-temperature interior, so the temperature is very close to the outside temperature. This results in a state where dew is likely to occur. For this reason, a high-temperature condensing pipe during the refrigeration cycle is disposed within the double flange as a heat dissipation pipe 1o to conduct heat to the outer box 2 and prevent frost formation in this part.

Problems to be Solved by the Invention However, in the above configuration, not all of the heat radiated by the heat radiating pipe 10 inserted into the double flange is released to the outside through the outer box 2, but only the entire heat is released. In many cases, 20% to 20% of the amount 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 transferred from the folded flange 2b to the inner box 3. A path leading into the refrigerator, and
This is because a path is formed from the inner flange 2d to enter the freezer compartment 6 or the refrigerator compartment 7 via the heat insulating material 4, which has a narrow gap with the inside of the refrigerator.

In addition, the bending part 2C of the double flange that the heat dissipation pipe 10 contacts and the outer box 2 do not come into complete contact with each other, and a gap is created, resulting in a non-contact state, so that heat is dissipated in the originally desired direction toward the outer box 2. By increasing the ratio sufficiently, the folded flange 2b
The ratio of heat radiation toward the inside flange 2d was high.

Furthermore, the heat dissipation pipe 10 does not come into close contact with the bent portion 2c of the double flange and does not achieve the desired heat dissipation effect as a condenser of the refrigeration cycle, increasing power consumption, and also prevents frost formation on the front edge of the outer box. There was a problem that I couldn't do it.

In view of the above-mentioned problems, the present invention improves the heat dissipation efficiency of the heat dissipation pipe, prevents heat from entering the freezer compartment and refrigerator compartment, reliably prevents frosting on the front edge of the outer box, and further improves the heat dissipation efficiency of the heat dissipation pipe. The aim is to also reduce power consumption.

Means for Solving the Problems In order to achieve the above object, the refrigerator of the present invention has a double flange of the outer box formed with a guide part, a pipe holding part, and a heat conductive sealer attached to the surface of the pipe holding part. Attach the fixing bracket, fix the heat dissipation pipe with this fixing bracket so that it is in contact with the back side of the double flange of the outer box, heat the heat dissipation pipe to melt the thermal conductive sealer, and attach the heat dissipation pipe, fixing bracket, and outer box. It is filled into the gap.

Effects of the present invention With the above-described configuration, the heat dissipation pipe can be firmly fixed, and the heat dissipation sealer improves the efficiency of heat dissipation from the heat dissipation pipe to the outer box, reliably preventing frost formation, and reduces power consumption. This has the effect of controlling the rise and fall of

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

In FIGS. 1 and 2, 11 is an outer box, and its front opening is formed by roll forming into an outer flange 11a.
, a folded flange 11b folded back on the back surface of this outer flange 11a, and a bent portion 11c.

An inner flange 11d is formed extending parallel to the folded flange 11b at a predetermined distance.

12 is a high temperature heat dissipation pipe during the refrigeration cycle; 13
is a fixing fitting made of a spring member, which is attached to the inner flange 11d of the outer box 11 using a spring force at an engaging part 13a, and further holds the heat dissipation pipe 12 to the outer box 11 using a pipe holding part 13b. It is fixed so as to come into contact with the outer box 11 at the rear of the inner flange 11d. Further, 13c is a guide portion formed on the fixing metal fitting 13, and is a guide portion formed on the fixing metal fitting 13, and
2 is provided to prevent damage to the heat dissipation pipe 12 and to facilitate installation work when fixing the heat dissipation pipe 12. Furthermore, in order to improve heat conduction to the outer box 11, a sealer 14 (hereinafter referred to as heat conductive sealer) with good thermal conductivity and solidified at room temperature, which is made of carbon and wax as a base material, is applied to the pipe holding portion 13b of the fixing fitting 13. is attached.

After the fixing fitting 13 is installed, the heat conductive sealer 14 is filled between the pipe holding part 13b, the heat dissipation pipe 12, and the outer box 11, so that a temperature higher than the melting point (82° C.) of the heat conductive sealer 14 is obtained. A stain flow is applied for a short time to both ends of the heat dissipation pipe 12, and heat generated by the heat dissipation pipe 12 is used to melt the heat conductive sealer 14, and the gaps between the heat dissipation pipe 12, the outer box 11, and the pipe holding part 13b are filled.

As described above, according to this embodiment, the heat dissipation pipe 12 is connected to the outer box 1.
1 and further increases the contact area with the heat conductive sealer 14 and actively conducts heat to the outer box 11, increasing the amount of heat radiated to the outside air. The amount of heat that enters the refrigerator is reduced.

Furthermore, when the heat dissipation pipe 12 is attached to the outer box, the heat dissipation pipe 12 is fixed by the guide part 13c of the fixing fitting 13, which makes the installation work easier, and it is firmly fixed by the pipe holding part 13b, resulting in more stable heat dissipation. can be obtained, and power consumption can also be reduced.

Effects of the Invention As described above, the present invention includes a guide part, a pipe holding part, and a heat conductive sealer 3 attached to the pipe holding part on a fixing fitting attached to the double flange of the outer box. The heat dissipation pipe is fixed in contact with the back of the double flange of the outer box, and the gap between the pipe holding part, the outer box, and the heat dissipation pipe is filled with heat conductive sealer, so the heat of the heat dissipation pipe is is efficiently conducted to the outer box, increasing the amount of heat radiated to the outside air. At the same time, the amount of heat that enters into the refrigerator from the folded flange and inner flange is suppressed, improving heat radiating efficiency, and reducing the heat radiating pipe. The installation work is easy, firm fixation is achieved, frost formation on the front edge of the outer box can be reliably prevented, and power consumption can also be reduced.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a refrigerator showing one embodiment of the present invention;
The figure is an assembled perspective view of the same figure 1, FIG. 3 is a perspective view of a conventional refrigerator, and FIG. 4 is a sectional view of the main part thereof. 3...Inner box, 4...Foam insulation material, 11
...Outer box, 12. ...Radiation pipe, 13.
...Fixing metal fittings, 13b...Pipe holding part, 13c...Guide part, 14...Heat conductive sealer. Name of agent: Patent attorney Toshio Nakao and 1 other person, 3 others
-11 inner box

Claims (1)

[Claims] An inner box, an outer box, a foam insulation material filled between the two boxes, a double flange formed on the front opening edge of the outer box, a fixing fitting attached to the double flange, and A guide portion and a pipe holding portion formed on the fixing fitting, a heat conductive sealer attached to the surface of the pipe holding portion, and a heat conducting sealer of the fixing fitting attached so as to come into contact with the rear surface of the double flange of the outer box. A refrigerator consisting of a heat dissipation pipe to prevent condensation, which is fixed with a pipe holding part.