JP2005300092A - Refrigerator control board storage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage device for a refrigerator control board that increases the reliability and life of parts of a control board by reducing a temperature rise especially of a power element out of the parts even under thermal effects depending on refrigerator installation conditions and use conditions. <P>SOLUTION: The storage device for a refrigerator control board has a refrigerator back panel 1, a casing 2 fixed to the refrigerator back panel 1, the refrigerator control board 3 with electronic/electric parts mounted on a board circuit fixedly stored in the casing 2, and a lid 4 for protecting the control board 3. The control board 3 is mounted with the power element 5. The power element 5 is fixedly provided with a heat sink 6. The heat sink 6 is provided with an electrically insulating good heat conductor 7. The electrically insulating good heat conductor 7 is butted against the lid 4. Heat generated from the power element 5 is thus transferred direct from the heat sink 6 to the lid 4 via the electrically insulating good heat conductor 7 for heat diffusion and radiation, so that a temperature rise of the power element 5 can be reduced and the reliability and life of the parts are increased. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a storage device for a control board that controls the operation of a refrigerator.

  Conventionally, this type of refrigerator has a space between the heat sink and the lid of the power element on the control board (see, for example, Patent Document 1).

  FIG. 2 shows a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 2, the refrigerator back plate 1, the housing 2 fixed to the refrigerator back plate 1, and the control of the refrigerator which is housed and fixed in the housing 2 and has electronic / electrical components attached to the board circuit. A substrate 3 and a lid 4 for protecting the control board 3 are provided. A power element 5 is attached to the control board 3, and the power element 5 is constituted by fixing a heat sink 6.

With the above configuration, the heat of the power element 5 is radiated through the heat sink 6.
JP 2001-82870 A

  However, in the above-described conventional configuration, the inside of the control board 3 of the refrigerator is a closed space in which the temperature of the power element 5 rises especially during operation and the generated heat is radiated by the heat sink 6 but is sealed by the lid 4. The heat dissipating effect is limited, and depending on the installation conditions and use conditions of the refrigerator, there is a problem that causes a malfunction or failure of a component due to the heat effect, a life reduction, or the like.

  The present invention solves the above-mentioned conventional problems, and suppresses the temperature rise of the power element, especially the components of the control board, and improves the reliability and lifespan of the components even under the influence of heat due to the installation conditions and usage conditions of the refrigerator. An object of the present invention is to provide a storage device for a refrigerator control board.

  In order to solve the above-described conventional problems, the refrigerator control board storage apparatus of the present invention has an insulating and good heat conductor attached to a heat sink fixed to a power element on the control board, and is in contact with the lid to form a sandwich. It is.

  As a result, the heat generated by the power element on the control board is transported from the fixed heat sink to the insulating and good heat conductor, even if it is a heat effect due to the installation conditions and usage conditions of the refrigerator or a closed space structure with the lid. In addition, since it moves to the abutted lid and dissipates and dissipates heat, the temperature rise of the power element can be suppressed, and the reliability and life of the parts are improved.

  The refrigerator control board storage device according to the present invention has an insulating and good heat conductor attached to a heat sink fixed to the power element on the control board, and a heat sink generated by the power element by contacting the lid with the lid. Is transported from the fixed heat sink to an insulating and good heat conductor, and further moved to the abutting lid where it diffuses and dissipates heat. Lifespan can be improved.

  The invention according to claim 1 includes a refrigerator back plate, a housing fixed to the refrigerator back plate, a housing control and storage board fixed in the housing, and an electronic / electrical component attached to the substrate circuit, A cover for protecting the control board is provided, a power element is attached to the control board, the power element is fixed to a heat sink, the heat sink is attached with an insulating and good heat conductor, and the insulating and good heat conduction is provided. Since the body is in contact with the lid, the heat generated by the power element on the control board is further insulated from the fixed heat sink even in the heat effect due to the installation conditions and usage conditions of the refrigerator and the structure of the closed space by the lid. In addition, since it is transported to a good heat conductor and then moved to the abutted lid where it is thermally diffused, the temperature rise of the power element can be suppressed, and the reliability and life of the parts can be improved. That.

  The invention according to claim 2 is the invention according to claim 1, wherein the lid is formed in a corrugated shape having an increased surface area, so that heat generated in the power element increases heat exchange in the lid and further spreads. The temperature rise of the power element can be further suppressed, and the reliability and life of the component can be further improved.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein a part of the lid is formed in a shape close to the electronic / electrical part, so that the closed space is reduced and air insulation is reduced. The surface area of the lid further increases, making it easier for heat generated by other electronic and electrical components to propagate to the lid, and the heat generated by the lid further increases the heat exchange at the lid and spreads, increasing the temperature of the power element. Therefore, the reliability and life of the parts can be further improved.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the refrigerant pipe that is in contact with the refrigerator back plate, and the back side of the control board where the refrigerator back plate and the power element are located. By providing an insulating and good heat conductor, heat transfer proceeds from the refrigerator back plate to the refrigerant pipe further abutting through the insulating and good heat conductor on the back side as well as the front side of the power element, The heat generated by the power element, combined with the lid on the front side, is dissipated in both the refrigerant piping on the back side, heat exchange is greatly increased, and the temperature rise of the power element can be suppressed as much as possible, improving the reliability and life of the parts. Further improvement can be achieved.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the lid is made of aluminum having high heat conductivity, so that heat conduction is improved and is generated in the power element. Heat is further exchanged by the lid, and diffusion and heat dissipation are increased, so that the temperature rise of the power element can be further suppressed, and the reliability and life of the component can be further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a cross-sectional view of a refrigerator control board storage device in Embodiment 1 of the present invention.

  In FIG. 1, a refrigerator back plate 1 has a housing 2 fixed thereto, and the housing 2 is housed and fixedly provided with a control board 3 of a refrigerator in which electronic / electrical components are attached to a substrate circuit. The lid 4 for protecting the control board 3 is attached by screws through a screw hole formed in the housing 2 and a fixing hole on the outer periphery of the lid 4, and a closed space separated from the outside is formed inside. Yes. A power element 5 is attached to the control board 3, and the power element 5 is fixed with a heat sink 6. The heat sink 6 is attached with an insulating and good heat conductor 7, and the insulating and good heat conductor 7 contacts the lid 4. It consists of touching. Further, the insulating and good heat conductor 7 may be attached to the lid 4 side and in contact with the heat sink 6.

  About the storage apparatus of the refrigerator control board comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  In the refrigerator, the control board 3 disposed on the rear surface of the refrigerator is easily affected by the heat under the installation conditions that obstruct the heat radiation of the latent heat of condensation and the overload operating condition. In particular, the power element 5 generates heat and the temperature rises. However, the heat conduction is directly transferred from the heat sink 6 to the lid 4 through the insulating and good heat conductor 7 to dissipate and dissipate the heat, and the heat conduction is significantly improved as compared with the case where the heat is simply dissipated from the heat sink 6 to the air. Therefore, the temperature rise of the power element 5 can be suppressed. It is desired that the insulating and good thermal conductor 7 be made of a material having excellent electrical insulation and thermal conductivity. For example, silicon rubber or insulating ceramic can be used.

  As described above, in the present embodiment, the power element 5 attached to the control board 3 is fixed with the heat sink 6 and further attached with the insulating and good heat conductor 7. The insulating and good heat conductor 7 is a lid. 4, the generated heat of the power element 5 is conveyed directly from the heat sink 6 to the lid 4 through the insulating and good heat conductor 7 to be diffused and dissipated, so that the temperature rise of the power element 5 is suppressed. It is possible to improve the reliability and life of the parts.

  The lid 4 may be formed with an increased surface area such as a corrugated shape (wave shape). In this case, the heat generated in the power element 5 due to the increase in the surface area of the lid increases the heat exchange in the lid, the diffusion further proceeds and the temperature rise of the power element can be further suppressed, and the reliability and life of the parts are further improved. Can do.

  Further, a part of the lid 4 may have a concavo-convex shape close to an electronic / electrical component attached to the control board 3. In this case, the closed space for storing the control board 3 is reduced, the air insulation is reduced, the surface area of the lid is further increased, and the heat generated by other electronic / electrical components is easily propagated to the lid. The heat exchange at the lid is further increased and the diffusion proceeds, the temperature rise of the power element 5 can be further suppressed, and the reliability and life of the parts can be further improved.

  Further, the refrigerant pipe returning from the cooler to the compressor is brought into contact with the heat insulating material side of the refrigerator back plate, and insulated from the refrigerator back plate near the refrigerant pipe and the back side of the control board where the power element 5 on the control board 3 is located. And a good heat conductor may be provided. In this case, the refrigerant pipe returning from the cooler to the compressor has a low temperature, and heat is transferred from the refrigerator back plate to the refrigerant pipe further in contact with the insulating and good heat conductor on the back side as well as on the front side of the power element 5. The heat generated by the power element 5 is dissipated in both the refrigerant pipes on the back side in combination with the cover on the front side, heat exchange is greatly increased, and the temperature rise of the power element can be suppressed as much as possible. Reliability and life can be further improved.

  The lid 4 is preferably made of aluminum having high thermal conductivity. In this case, the heat conduction from the lid 4 is further improved, and the heat generated in the power element is further diffused and diffused by the heat exchange through the lid, so that the temperature rise of the power element can be further suppressed, and the reliability of the component Property and life can be further improved.

  As described above, the refrigerator control board storage apparatus according to the present invention can be applied to applications such as an air conditioner using a power element and other home appliances.

Sectional drawing of the storage apparatus of the refrigerator control board in Embodiment 1 of this invention Sectional view of a conventional refrigerator control board storage device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator back plate 2 Case 3 Control board 4 Lid 5 Power element 6 Heat sink 7 Insulating and good heat conductor

Claims (5)

  A refrigerator back plate, a housing fixed to the refrigerator back plate, a control board of the refrigerator that is housed and fixed in the housing and has electronic / electrical components attached to the board circuit, and a lid that protects the control board are provided. A power element is attached to the control board, the power element has a heat sink fixed thereto, the heat sink has an insulating and good heat conductor, and the insulating and good heat conductor is in contact with the lid. A refrigerator control board storage device.   The storage device for a refrigerator control board according to claim 1, wherein the lid is formed in a corrugated shape having an increased surface area.   The storage device for a refrigerator control board according to claim 1 or 2, wherein a part of the lid is shaped close to an electronic / electrical part.   The refrigerator as described in any one of Claim 1 to 3 which provided the insulating and good heat conductor in the refrigerant | coolant piping which contact | abutted to the refrigerator back plate, and the back side of the control board in which the said refrigerator back plate and a power element are located. Control board storage device.   The refrigerator control board storage device according to any one of claims 1 to 4, wherein the lid is made of aluminum having high thermal conductivity.

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