JP2000292050A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance heat dissipating and cooling effect of a control electric part without requiring any extra part or design revision by bringing the control electric part of a refrigerator into contact with the metallic part of the refrigerator direct or through a highly heat conductive substance thereby utilizing the metallic part of the refrigerator as a heat dissipation plate for the control electric part. SOLUTION: A containing chamber 3 is formed of a sheet metal 2 on the back face part of a refrigerator body 1 and the opening of the containing chamber 3 is applied with a cover 4. A wiring board 5 mounting a control electric part 6 is secured in the containing chamber 3 by means of a securing member 7. The control electric part 6 is brought into contact with the cover 4 through a highly heat conductive substance 8, e.g. an aluminum plate. Consequently, heat of the control electric part 6 is discharged to the outside through the cover 4 by utilizing the cover 4 entirely as a heat dissipation plate. When a flexible matter, e.g. a silicon rubber, is employed as the highly heat conductive substance 8, the control electric part 6 is surely brought into tight contact with the cover 4 and heat dissipating/cooling effect can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator,
In particular, the present invention relates to a heat dissipation structure of a control electric component incorporated in a refrigerator.

[0002]

2. Description of the Related Art FIG. 10 shows an arrangement portion of a control electric wiring board of a conventional refrigerator. In the conventional refrigerator, the control electrical component storage chamber 102 for storing the control electrical wiring board 101 on which the control electrical component 100 is mounted is provided with a sheet metal portion 111 on the main body side of the refrigerator 110 in order to prevent dust and water from splashing. The control electric wiring board 101 is covered with a sheet metal part 111 on the main body side of the refrigerator 110 and a metal cover 112 in a control electric component storage room 102 in a state close to a closed state. Are fixed to the refrigerator main body side by the substrate fixing member 113 so as not to touch any of them. A heat sink 103 is provided on the control electric component 100 that generates operation heat in order to prevent a rise in temperature.
Is attached.

Another conventional example is disclosed in Japanese Utility Model Application Laid-Open No. 58-6479.
As shown in Japanese Patent Publication No. 2 (1995) -1995, a cover for accommodating heat-generating control electric components and substrates and a suction pipe of a refrigeration cycle are arranged in a heat exchange relationship, and a refrigerant flowing through the suction pipe is used to control the control electric components. There are refrigerators configured to provide cooling.

[0004]

Since the control electric component storage room of the refrigerator is almost in a closed state and is not ventilated, even if a large heat sink is attached to the control electric component that needs to be cooled, the heat sink will not work. It is located in the control electric component storage room where air circulation is poor, and the heat of the control electric component cannot be efficiently dissipated. Further, a separate component called a heat sink is required, which increases the cost.

[0005] Further, in the case of cooling the control electric parts by the refrigerant flowing through the suction pipe, the arrangement position of the control electric parts is restricted, the handling of the suction pipe is complicated, and the existing type of refrigerator is used. Will require significant design changes.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and does not require a separate component such as a heat sink or the like, and does not require significant changes in the design of existing refrigerators. It is an object of the present invention to obtain a refrigerator which is improved so that the heat radiation cooling of the refrigerator can be efficiently performed.

[0007]

In order to achieve the above-mentioned object, a refrigerator according to the present invention is arranged such that a control electric component incorporated in the refrigerator comes into contact with a metal part of the refrigerator directly or through a highly heat-conductive substance. And a metal part of the refrigerator is used as a radiator plate of the control electric component.

The refrigerator according to the next invention is a cover in which the metal part of the refrigerator in contact with the control electric component covers the control electric component storage room.

[0009] In the refrigerator according to the next invention, irregularities are formed on an outer surface of the cover.

[0010] In the refrigerator according to the next invention, the metal part of the refrigerator contacted with the control electric parts is a sheet metal part on the refrigerator main body side of the control electric parts storage room.

[0011] In the refrigerator according to the next invention, the control electric part is fixed to a metal part of the refrigerator by fastening means such as screws.

In the refrigerator according to the next invention, the control electric component is fixed to the metal portion of the refrigerator by a locking piece formed on the metal portion.

In the refrigerator according to the present invention, the control electric component is mounted on an electric wiring board having an elastic leg, and the control electric component is resiliently deformed by a resilient force of the elastic leg. It is pressed against.

In the refrigerator according to the next invention, the control electric component is fixed to a metal portion of the refrigerator body, and the control electric component or the electric wiring board on which the control electric component is mounted is another electric component or another electric component. It is electrically connected to the electric wiring board by a conductive connection component such as a lead wire.

In the refrigerator according to the next invention, the control electric component is mounted on an electric wiring board having elastic conductive legs, and is electrically connected to another electric wiring substrate by the conductive legs. The control electric component is pressed against a metal part of the refrigerator by a repulsive force due to elastic deformation of the conductive leg.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a refrigerator according to the present invention.

Embodiment 1 1 and 2 show a first embodiment of a refrigerator according to the present invention. 1 and 2, reference numeral 1 denotes a refrigerator main body, 2 denotes a sheet metal on the refrigerator main body side that defines a control electric component storage room 3 on a back portion of the refrigerator main body 1, and 4 denotes a cover that covers the control electric component storage room 3. A metal cover detachably fixed to the refrigerator main body 1 for the sake of simplicity, a control electric wiring board 5 on which a control electric component 6 is mounted,
Denotes board fixing members for fixing the control electric wiring board 5 to the refrigerator body 1.

The control electric component 6 (hereinafter abbreviated as “electric component 6”) is an electric component that needs to be cooled, and has a high heat conductive material such as an aluminum plate or silicon rubber in the control electric component storage room 3. It is arranged so as to come into contact with the cover 4 via 8.

As described above, in the refrigerator in which the control electric wiring board 5 is disposed, the electric component 6 that needs to be cooled is in contact with the cover 4 through the high heat conductive substance 8, so that the cover 4 is used as a heat sink, and the heat of the electric component 6 can be released to the outside through the cover 4. When the high thermal conductive material 8 is flexible like silicon rubber, the adhesion between the electric component 6 and the cover 4 is improved, and effective cooling can be performed.

In this refrigerator, the electric component 6 can be cooled without using a cooling component such as a heat sink, so that it is possible to reduce the number of cooling components and solder at the time of mounting the cooling components. There is.

The electric component 6 may be in direct contact with the cover 4 without the intervention of the high thermal conductive material 8.

Embodiment 2 FIG. FIG. 3 shows a second embodiment of the refrigerator according to the present invention. In this embodiment, the electrical component 6 that needs to be cooled is a high heat conductive material 8.
Are arranged so as to come into contact with the sheet metal 2 on the side of the refrigerator body 1 via the.

As described above, in the refrigerator in which the control electric wiring board 5 is arranged, the electric component 6 that needs to be cooled comes into contact with the sheet metal 2 on the side of the refrigerator main body 1 through the high heat conductive substance 8. As a result, the sheet metal 2 having a large heat dissipation area is used as a heat sink, and the heat of the electric
Can be released to the outside. When the high thermal conductive material 8 is flexible like silicon rubber, the adhesion between the electric component 6 and the metal plate 2 is improved, and effective cooling can be performed.

Also in this refrigerator, the electric component 6 can be cooled without using a cooling component such as a heat sink, so that it is possible to reduce the number of cooling components and the solder at the time of mounting the cooling components, which is also advantageous in terms of recycling. There is.

The electric component 6 may be in direct contact with the sheet metal 2 without the intervention of the high thermal conductive material 8.

Embodiment 3 FIG. FIG. 4 shows a third embodiment of the refrigerator according to the present invention. In this embodiment, an electric component 6 that needs to be cooled by a fastening component 9 such as a screw is fixed to the cover 4.

As a result, the adhesion between the electric component 6 and the cover 4 can be increased, and effective cooling can be performed.

When the electric component 6 is placed in contact with the sheet metal 2 on the refrigerator body 1 side as in the second embodiment, the electric component 6 may be fixed to the sheet metal 2 by the fastening part 9. .

Embodiment 4 FIG. 5 shows a fourth embodiment of the refrigerator according to the present invention. In this embodiment, a locking piece 10 is formed on the cover 4, and the electric component 6 that needs to be cooled is fixed to the cover 4 by the locking piece 10.

As a result, the adhesion between the electric component 6 and the cover 4 can be improved without requiring other fastening parts, and effective cooling can be performed. Further, the workability at the time of the fixing work is improved, and the cost can be reduced because other fastening parts can be reduced.

Embodiment 5 FIG. 6 shows a fifth embodiment of the refrigerator according to the present invention. In this embodiment, an extendable elastic leg 11 is attached to a control electric wiring board 5 on which an electric component 6 that needs to be cooled is mounted.
1 is contracted, and the electric component 6 on the control electric wiring board 5 is pressed against the cover 4 by the repulsive force due to the elastic deformation of the elastic leg 11.

As a result, the adhesion between the electric component 6 and the cover 4 can be improved, and effective cooling can be performed.

The elastic leg 11 shown is a cylindrical body 12
The movable body 13 is fitted so as to be able to move in and out, and the compression coil spring 14
Although the movable body 13 is biased to the protruding side by the above, the elastic leg may be a rubber leg or the like.

When the electric component 6 is placed in contact with the sheet metal 2 on the refrigerator body 1 side as in the second embodiment, the electric component 6 may be pressed against the sheet metal 2 by the elastic legs.

Embodiment 6 FIG. FIG. 7 shows a sixth embodiment of the refrigerator according to the present invention. In this embodiment, the electric component 6 that needs to be cooled is the electric wiring board 15.
And the electric wiring board 15 is fixed to the cover 4 so that the electric component 6 comes into contact with the cover 4.
The other control electric wiring board 5 and the conductive connection parts 16 such as lead wires are conductively connected.

With the above configuration, for example, after making the electric wiring board 15 small and fixing it to the cover 4 with fastening parts such as screws, the control board installed on the refrigerator body 1 side It can be connected to the electric wiring board 5 by conductive connecting parts 16 such as lead wires. For this reason, the electric component 6 can be securely fixed to the cover 4 and the workability can be improved.

The electric component 6 can also be fixed to the cover 4 as a single piece without using the electric wiring board 15, and in this case, the electric component 6 is connected to the control electric wiring board 5 or other electric connection parts by conducting connection parts such as lead wires. The electric wiring board 15 can be reduced as long as it is conductively connected to the electric component.

This embodiment can be similarly applied to the second embodiment, and the electric component 6 or the electric wiring board 15 on which the electric component 6 is mounted is fixed to the sheet metal 2 on the refrigerator main body 1 side. I just need.

Embodiment 7 FIG. 8 shows a seventh embodiment of the refrigerator according to the present invention. In this embodiment,
The electric component 6 that needs to be cooled is mounted on the electric wiring board 18 having the conductive legs 17 having elasticity, and the electric wiring board 18 is set so that the electric component 6 contacts the cover 4.
It is fixed to the cover 4 and is electrically connected to another electric wiring board 5 by the conductive leg 17.

In this embodiment, the attachment of the cover 4 causes the conductive leg 17 to bend, and the electric component 6 on the electric wiring board 18 is pressed against the cover 4 by the repulsive force due to the elastic deformation of the conductive leg 17. .

As a result, the adhesion between the electric component 6 and the cover 4 can be increased, and effective cooling can be performed. In this case, the refrigerator body 1 of the control electric wiring board 5
The structure for attaching the substrate to the refrigerator body 1 is also simplified, and the workability of attaching the substrate to the refrigerator body 1 is also improved.

When the electric component 6 is disposed in contact with the sheet metal 2 on the refrigerator body 1 side as in the second embodiment, the electric component 6 is pressed against the sheet metal 2 by the conductive legs 17. Good.

Embodiment 8 FIG. FIG. 9 shows an eighth embodiment of the refrigerator according to the present invention. In this embodiment, fin-like irregularities 19 are formed on the outer surface of the cover 4 to increase the heat radiation area of the cover 4.

As described above, the cover 4 touching the outside air
The surface of the cover 4 is provided with irregularities 19 to increase the heat radiation area of the cover 4, so that effective heat radiation is performed.

[0045]

As will be understood from the above description, according to the refrigerator of the present invention, the control electric parts incorporated in the refrigerator are arranged so as to come into contact with the metal part of the refrigerator directly or via a highly heat-conductive substance. Since the metal part of the refrigerator is used as a heat radiating plate for the control electric component, the heat of the control electric component can be released through the metal part of the refrigerator for effective cooling. Further, since the control electric components can be cooled without using a cooling component such as a heat sink, it is possible to reduce the number of cooling components and solder at the time of mounting the cooling components, which is advantageous in terms of recycling.

According to the refrigerator of the present invention, since the metal part of the refrigerator in contact with the control electric component is a cover for covering the control electric component storage room, the cover exposing the heat of the control electric component to the outside air. For effective cooling. In addition, since the cover is used as a heat sink, parts for the heat sink can be reduced.

According to the refrigerator of the next aspect of the present invention, since the unevenness is formed on the outer surface of the cover, the heat radiating area of the cover can be increased and effective heat radiating can be performed.

According to the refrigerator according to the next invention, since the metal part of the refrigerator contacting the control electric parts is the sheet metal part of the refrigerator main body side of the control electric parts storage room, the heat of the control electric parts is transferred to the refrigerator main body side. It can be discharged through the sheet metal part for effective cooling. In addition, since the cover is used as a heat sink, parts for the heat sink can be reduced.

According to the refrigerator of the present invention, since the control electric parts are fixed to the metal part of the refrigerator by fastening means such as screws, the adhesion between the control electric parts and the metal parts can be improved. , More effective cooling becomes possible.

According to the refrigerator of the present invention, since the control electric component is fixed to the metal portion by the locking piece formed on the metal portion of the refrigerator, the adhesion between the control electric component and the metal portion is improved. , And more effective cooling becomes possible, and at the same time, the workability at the time of the fixing work is improved and the number of fixed parts is reduced.

According to the refrigerator of the next invention, the control electric components are mounted on the electric wiring board having the elastic legs,
Since the control electric component is pressed against the metal part of the refrigerator by the repulsive force due to the elastic deformation of the elastic legs, the adhesion between the control electric component and the metal part can be increased, and more effective cooling becomes possible. .

According to the refrigerator of the next invention, the control electric components that need to be cooled are fixed to the metal part of the refrigerator main body, and the control electric components or the electric wiring board on which the control electric components are mounted are different from each other. Electrical parts or other electrical wiring boards are electrically connected by conductive connecting parts such as lead wires. After fixing to the refrigerator main body with screws or other fastening parts, other control boards installed on the refrigerator main body side can be connected with connecting parts such as lead wires, improving workability. Since the wiring board is fixed to the refrigerator body after being fixed with fastening parts such as screws, it is possible to securely mount the electric parts to the metal part.

In the refrigerator according to the next aspect of the present invention, the control electric parts that need to be cooled are mounted on an electric wiring board having conductive legs having elasticity, and are electrically connected to other electric wiring boards by the conductive legs. At the same time, since the control electric component is pressed against the metal part of the refrigerator by the repulsive force due to the elastic deformation of the conductive legs, the adhesion between the electric component and the metal part of the refrigerator can be increased, and the electric wiring board The mounting structure to the refrigerator main body is also simplified, and the workability of mounting the substrate to the refrigerator main body is also improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the entirety of a first embodiment of a refrigerator according to the present invention.

FIG. 2 is a sectional view showing a main part of the first embodiment of the refrigerator according to the present invention.

FIG. 3 is a sectional view showing a main part of a refrigerator according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing a main part of a refrigerator according to a third embodiment of the present invention.

FIG. 5 is a perspective view showing a main part of a refrigerator according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a main part of a refrigerator according to a fifth embodiment of the present invention.

FIG. 7 is a perspective view showing a main part of a refrigerator according to a sixth embodiment of the present invention.

FIG. 8 is a perspective view showing a main part of a refrigerator according to a seventh embodiment of the present invention.

FIG. 9 is a sectional view showing a main part of a refrigerator according to an eighth embodiment of the present invention.

FIG. 10 is a cross-sectional view showing an arrangement portion of a control electric wiring board of a conventional refrigerator.

[Explanation of symbols]

1 refrigerator body, 2 sheet metal, 3 control electric parts storage room, 4 covers, 5 control electric wiring board, 6 control electric parts, 7 board fixing member, 8 high thermal conductive material, 9
Fastening parts, 10 locking pieces, 11 elastic legs, 15 electrical wiring board, 16 conductive connection parts, 17 conductive legs, 1
8 electric wiring board, 19 irregularities.

Claims (9)

[Claims] An electric component for control incorporated in a refrigerator is arranged so as to be in direct contact with a metal part of the refrigerator or via a highly heat-conductive substance, and the metal part of the refrigerator is used as a heat sink of the electric component for control. Refrigerator. 2. The refrigerator according to claim 1, wherein the metal part of the refrigerator that contacts the control electric component is a cover that covers the control electric component storage room. 3. The refrigerator according to claim 2, wherein irregularities are formed on an outer surface of the cover. 4. The refrigerator according to claim 1, wherein the metal part of the refrigerator contacted with the control electric part is a sheet metal part on the refrigerator main body side of the control electric part storage room. 5. The refrigerator according to claim 1, wherein the control electric component is fixed to a metal part of the refrigerator by fastening means such as screws. 6. The refrigerator according to claim 1, wherein the control electric component is fixed to the metal part of the refrigerator by a locking piece formed on the metal part. . 7. The control electric component is mounted on an electric wiring board having an elastic leg, and the control electric component is pressed against a metal part of the refrigerator by a repulsive force due to elastic deformation of the elastic leg. The refrigerator according to any one of claims 1 to 4, wherein: 8. The control electric component is fixed to a metal portion of the refrigerator body, and the control electric component or the electric wiring board on which the control electric component is mounted is connected to another electric component or another electric wiring substrate and a lead. The refrigerator according to any one of claims 1 to 4, wherein the refrigerator is electrically connected by a conductive connection component such as a wire. 9. The control electric component is mounted on an electric wiring board having a conductive leg having elasticity, and is electrically connected to another electric wiring board by the conductive leg.
The refrigerator according to any one of claims 1 to 4, wherein the control electric component is pressed against a metal part of the refrigerator by a repulsive force due to elastic deformation of the conductive leg.