JPS61285367A - 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] Industrial applications The present invention relates to a refrigerator.

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.

An example of the arrangement specifications of the heat dissipation pipe for preventing dew formation in the conventional refrigerator mentioned above will be described below with reference to the drawings.

FIGS. 4 to 6 show the arrangement specifications of heat dissipation pipes of conventional refrigerators.

1 is a refrigerator 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. Further, the interior partition 6 is divided into a freezer compartment 6 in the upper part and a refrigerator compartment 7 in the lower part, and 8 is a front plate of the interior partition 6.

The front edge opening of the outer box 2 is formed by roll former forming into an outer flange (2-a), a folded flange (2-b) folded back on the back side of this outer flange (2-a), and a bent part (2-c).
), forming a double flange consisting of the folded flange (2-b) and an inner flange (2-d) extending parallel to each other at a predetermined distance.

The inner box 3 is inserted into the opening flange (3-a)'i of the double flange of the outer box 2 via a sealing member 9. 1o is inside the double flange, that is, the folded flange (2
-b) and the inner flange (2-c), and a portion corresponding to the partition 6 on the - side extends to the back side of the front plate 8.

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 inside of the refrigerator, so the temperature is very low compared to the outside temperature. This creates a situation where condensation is likely to occur. For this reason, a high-temperature condensation pipe during the refrigeration cycle is disposed within the double flange as a heat dissipation pipe 10 to conduct heat to the outer box 2 and prevent dew formation in this part.

Problems to be Solved by the Invention However, in the above configuration, the heat radiated by the heat radiating pipe 1o inserted into the double flange is not entirely radiated to the outside through the outer box 2. 20 to 3 degrees of heat often enters the freezer compartment 6 and refrigerator compartment γ 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 folded flange (2-b) to the inner box 3 and into the refrigerator, and there is a gap between the inner flange (2-d) and the interior of the refrigerator. This is because a path for entering the freezer compartment e and the refrigerator compartment 7 is formed through the narrowed heat insulating material 4.

In addition, the bent part of the double flange (
2-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, making it impossible to sufficiently increase the heat dissipation ratio in the direction of the outer box 2, which was originally desired. The heat radiation ratio toward the flanges (2-b) and the inner flange (2-d) was high.

In addition, in order to solve these problems, as shown in Fig. 6, the heat dissipation pipe 10 is removed from the double flange and placed in contact with the outer box 2. Allied resin 1
It has also been considered to fix the heat dissipation pipe 1o with aluminum foil (not shown).

However, in this case, the heat radiation pipe 10i is located between the front edge flange (3-a) of the inner box 3 and the partition front plate 8 in the portion extending from one side of the heat radiation pipe 1o to the back side of the partition front plate 8. Notch (2-e) in inner flange (2-d) to extend? , must be provided.

First of all, this is due to the notch (
2-e) requires a tape 12 for preventing leakage of the insulation material before filling the foam insulation material 4, resulting in poor cost and workability.

Second, the door 13 that is normally attached to the front of the refrigerator body 1 is configured to be fixed and opened/closed by the upper hinge (14-1) and the lower hinge (14-2).
3 is a load W1 due to the weight of the door 13 and the food stored in the door, a load W2 from above the hinge (14-1) in the opposite direction to the opening angle of the door 13, and an opening of the door 13 from below the hinge (14-2). Load W that changes depending on weight in the angular direction and parallel to the door surface
It takes 3 each. That is, a load W2. which changes depending on the opening angle of the door 13 is applied to the front edge side portion of the outer box 2 through the upper hinge (14-1) and the lower hinge (14-2)'i. W3 is door 1
3, and the load on the sides of the outer box 2 is extremely large. If the inner flange (2-d) is notched on the side surface of the outer box 2, it will be difficult to ensure the strength to withstand long-term use, and the door 13 will be unable to open or close due to its lowering. Alternatively, problems such as incomplete closing of the door may occur.0Also, it is possible to reverse the extension side of the partition part of the heat dissipation pipe, but in the case of normal refrigerators, consumers Since the door is manufactured with both left and right opening directions depending on the actual use, similar problems arise in either direction.

Means to solve problems In order to solve the above problems, the refrigerator of the present invention is provided.

Place one side of the heat dissipation pipe inside the double flange on one side of the outer box and extend it to the back side of the partition front plate, and install the outer box so that the other side touches the outer box from which the double flange has been removed. A part of the inner flange is cut out at the top and a heat dissipation pipe is bent and arranged.

Function The present invention has the effect of improving the heat dissipation efficiency to the outer box and preventing the strength of the refrigerator body from deteriorating due to the above-described configuration.

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, 16 is an outer box, and its front edge opening is formed into an outer flange (15-a) by roll former molding.
), a folded flange (1ei-b) folded back on the back surface of this outer flange (15-a), a bent part (15-a), extending parallel to the folded flange (16-b) at a predetermined distance. An inner flange (16-d) is formed,
The inner flange (1s-d) has a notch (15-e) in a part of the top portion. Reference numeral 16 denotes a high-temperature heat dissipation pipe during the refrigeration cycle, and has an extending portion (1e-a)'t- extending from one side to the back surface of the partition front plate 8. Further, this heat dissipation pipe 16 is connected to the bent part (16-0) between the folded flange (15-b) and the inner flange (1s-d) of the outer box 16 on the side of the extension part (16-a). The other side is arranged to abut against the outer box 16 behind the inner flange (16-d), and is made of thermoplastic material with good thermal conductivity to improve heat conduction to the outer box. It is fixed with resin 11 (hereinafter referred to as hot melt).

In addition, the heat dissipation pipe 16 has an inner flange (1ts
-d) is provided with a bent part (1e-b) at the part corresponding to the notch (1!-e'), and the inner flange (1cs
It communicates with the front and back of -d).

As described above, according to this embodiment, the heat dissipation pipe 16 directly contacts the outer box 16 at the bent part (16-b), and heat is actively transferred to the outer box 12 by the hot melt 11. Because of the conduction, the amount of heat dissipated to the outside air increases, and conversely, the amount of heat that enters into the refrigerator from the folded flange (15-b) and inner @ flange (1es-d) decreases. Since there is no need to cut out the inner flange (1es-d) at the part corresponding to the section (16-a), there is no need for a separate tape for preventing leakage of the foam insulation material 4; By positioning the notch (1B-e) f in d) at the top, sufficient strength of the refrigerator body can be ensured.

In this example, hot melt was applied, but the same effect can be obtained by using a tape of good thermal conductivity such as aluminum foil.

Effects of the Invention Since the heat dissipation pipe is arranged inside the flange and the heat dissipation pipe is disposed behind the inner flange so as to come into contact with the outer box, the heat of the heat dissipation pipe is efficiently conducted to the outer box. This increases the amount of heat dissipated to the outside air, and at the same time suppresses the amount of heat that enters the refrigerator from the folded flanges and inner flanges, which not only improves heat dissipation efficiency, but also reduces the amount of heat dissipated into the refrigerator body due to the notch on the inner flange. The effects are great, with almost no problems such as deformation or poor door opening/closing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an outer box of a refrigerator showing one embodiment of the present invention, seen from the inside of the refrigerator, and FIG. 2 is a perspective view of the refrigerator shown in FIG. 1.
3 is a sectional view taken along line A-A' in FIG. 2, FIG. 4 is a perspective view of a conventional refrigerator, FIG. 5 is a sectional view taken along line B-B' in FIG. FIG. 4 is a sectional view of the side wall at the lower part of the hinge in FIG. 4 of the conventional example. 3...Inner box, 8...Inner partition front plate, 16
······Outer case. 16... Heat dissipation pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person t6
--- At; silent Baifu. 16----Skull Ichisaha 1ia YJ-Yu 15-b15-(L Fig. 4

Claims (1)

[Claims] an outer box with a double flange formed on the front opening edge; a partition front plate that divides the front opening surface of the outer box into upper and lower parts; an inner box with a flange on the opening edge inserted into the double flange; One side of the heat radiation pipe is disposed within the double flange on one side of the outer box and extends to the back surface of the partition front plate, and the other side is provided with a double flange on one side of the outer box. A refrigerator characterized in that a part of the inner flange of the double flange is cut out at the top of the outer box and the heat dissipation pipe is bent so as to come into contact with the outer box from which the flange has been removed.