JPS63318475A - 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 pipe at the front opening of the main body to prevent interference.

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 condensation. 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.

FIGS. 4 and 5 show the layout specifications of heat dissipation pipes for conventional refrigerators.

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. Further, the interior partition 6 is divided into a freezer compartment 6 at the upper part and a refrigerator compartment 7 at the lower part, and 8 is a front plate of the interior partition 5.

The front edge opening of the outer box 2 is formed by roll former forming into an outer flange (2-a), a folded 7-lunge (2-b) which is folded back on the back side of this outer 7-lange (2-a), and a bent portion (2-a). -c
), a double 7 consisting of an inner flange (2-d) extending parallel to the folded 7 flange (2-b) at a predetermined distance.
Forming a lunge.

The inner box 3 has its opening 7 flange (3-a) inserted into the double flange of the outer box 2 via a seal member 9.

1o is inside the double 7 lunge, that is, the folded 7 lunge (2-
This is a heat dissipation pipe in the refrigeration cycle inserted in the space between the inner 7 flange (2-b) and the inner 7 flange (2-c), and the portion corresponding to the partition 6 on the - side thereof 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 interior, so the temperature is very low compared to the outside temperature. This results in a state where dew is likely to occur. For this reason, the high-temperature condensation during the refrigeration cycle is placed in the double 7 lunge as the high-temperature condensation tube 1o, which conducts heat to the outer box 2 and prevents the problem of 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 7 lunge is radiated to the outside through the outer box 2. 20 to 30% of the heat radiation often enters the freezer compartment 6 and refrigerator compartment 7 inside the heat insulating box, reducing cooling efficiency.

This is because a part of the heat emitted by the heat dissipation pipe is conducted from the folded flange 7 (2-b) to the inner box 3 and into the refrigerator, and the gap between the inner flange (2-d) and the interior of the refrigerator. This is because a path is formed through which the heat insulating material 4 becomes narrower and enters the freezer compartment 6 and the refrigerator compartment 7.

In addition, the bent part (2-c) 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. It was not possible to sufficiently increase the heat radiation ratio in the direction, and the heat radiation ratio in the direction of the folded 7-flange (2-b) and the inner flange (2-d) was high.

The heat dissipation pipe 9 is located at the double flange bent part (2-c)
Problems have arisen in that the heat dissipation effect as a condenser of a refrigeration cycle is not achieved due to the condenser not being in close contact with the refrigeration cycle, resulting in an increase in power consumption, and in that it is not possible to prevent damage to the front edge of the outer box.

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 fixing metal fitting for the inner box etc. that is fixed to the rear surface of the double flange of the outer box. The heat dissipation pipe is fixed so as to be in contact with the back surface of the double 7 lunges of the outer box.

Function The present invention has the effect of firmly fixing the heat dissipation tube, improving heat dissipation efficiency to the outer box, reliably preventing frost formation, and reducing power consumption. It is something.

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 denoted by the same reference numerals, and the description thereof will be omitted.

In Figs. 1 to 3, 11 is an outer box, and its front edge opening is roll-formed to form an outer 7 flange (11-
&), a folded 7-flange (11-b) folded back on the back surface of this outer flange (11-a), a bent part (11-c), parallel to the folded 7-flange (11-b) at a predetermined distance. An inner flange (11-d) extending from the inner flange (11-d) is formed.

12 is a high-temperature heat dissipation pipe during the refrigeration cycle, and an extension part (12-a) extends from one side to the back surface of the partition front plate 8.
It is equipped with Reference numeral 13 denotes an inner box fixing metal fitting fixed to the rear surface of the inner flange (11-d) by spot welding or the like, and a hole in the inner box 3 ( 3-) and the screw 14 is inserted into the inner box fixing metal fitting 13.
is fastened to the inner box mounting hole (13-a). 15 is a hinge fixing hole (13-) provided in the inner box fixing fitting 13.
b) is a hinge fixing metal fitting that is attached to the door (not shown) with screws 16, and is used to support the door (not shown) through the hinge (not shown) 1 - the partition front plate 8t - which supports the door (not shown) so that it can be opened and closed. be.

Further, the heat dissipation pipe 12 is disposed so as to come into contact with the outer box 11 behind the inner 7 langes (11-d) of the outer box 11, and is provided with a locking piece (13-a) formed on the inner box fixing fitting 13.
) is fixed. Furthermore, in order to improve heat conduction to the outer box 11, firm fixation is achieved using a thermoplastic surrounding resin 17 (hereinafter referred to as hot melt) having good thermal conductivity.

As described above, according to this embodiment, the heat dissipation pipe 12 is connected to the outer box 1.
1 and actively contact the outer box 11 with hot melt 17.
As the heat is conducted to the outside air, the amount of heat dissipated to the outside air increases.
) will reduce the amount of heat that enters the refrigerator. Also, when attaching the heat dissipation pipe 12 to the outer box, the locking piece of the inner box fixing fitting 13 (
13-c), the heat dissipation pipe 12 is fixed, making the installation work easier, and it is also firmly fixed, providing stable heat dissipation and reducing power consumption.

In this example, hot melt was applied, but a tape with good thermal conductivity such as aluminum foil may also be used.Also, inner box fixing fittings were used to fix the heat dissipation pipe, but other methods may be used to reinforce the outer box. A similar effect can be obtained by using metal fittings used in

Effects of the Invention As described above, the present invention forms a locking piece on the fixing fitting of the inner box etc. fixed to the rear surface of the double 7 flange of the outer case, and uses this locking piece to connect the heat dissipation pipe to the double 7 flange of the outer case. Because it is fixed so that it touches the back of the 7 flange, the heat from the heat dissipation pipe is efficiently conducted to the outer box, increasing the amount of heat radiated to the outside air, and at the same time increasing the amount of heat radiated to the outside air from the folded 7 lange and inner flange to the inside of the refrigerator. The amount of heat that enters is suppressed, improving heat dissipation efficiency, making it easy to install the heat dissipation pipe, ensuring strong fixation, and reliably preventing damage to the front edge of the outer box, and reducing power consumption. The amount can also be reduced.

[Brief explanation of drawings]

FIG. 1 is a sectional view of essential parts of a refrigerator showing an embodiment of the present invention;
FIG. 2 is an assembled perspective view of the refrigerator, FIG. 3 is an assembled perspective view of a partition wall, FIG. 4 is a perspective view of a conventional refrigerator, and FIG. 5 is a sectional view of a main part thereof. 3...Inner box, 4...Foam insulation material, 11
...Outer box, 12... Heat dissipation pipe, 13
...Inner box fixing bracket, 13-c...Locking piece. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
Inner box 4 - Outgoing package 1fr=;Material Il ・--Datozul matter 12--One flag, Hideheha 0if. 13- Inner basket rotation complete diagram 4

Claims (1)

[Claims] an inner box and an outer box, a foam insulation material filled between the two boxes, and a double flange formed at the front opening edge of the outer box;
A fixing fitting such as an inner box fixed to the rear surface of this double flange, a locking piece formed on this fixing fitting, and a locking piece of the said fixing fitting so as to come into contact with the rear surface of the double flange of the outer box. A refrigerator consisting of a fixed heat dissipation pipe to prevent condensation.