JP2018148613A - Power supply device and refrigerator - Google Patents

Abstract

A power supply device and a refrigerator that improve reliability are provided. A power supply device (10a) according to the present invention includes a substrate (12), a control component group (13) in which control components mounted on the substrate (12) are assembled, and a heat generation amount during operation, which is mounted on the substrate (12). And a heat-generating component group 14 in which heat-generating components 14a to 14c each having a value or more are assembled. The heat-generating component group 14 is located above the control component group 13 in the vertical direction V. The refrigerator of the present invention includes a power supply device 10a and a compressor, and the power supply device 10a controls the compressor. [Selection diagram] FIG.

Description

  The present invention relates to a power supply device and a refrigerator.

  A power supply device in which a high heat generating component that generates a large amount of heat during operation is mounted on a substrate has a structure that dissipates heat generated from the high heat generating component. Examples of the power supply device having such a heat dissipation structure include Japanese Patent Application Laid-Open No. 2014-117106 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2015-123846 (Patent Document 2).

  The power supply device disclosed in Patent Document 1 has a structure in which a first substrate and a second substrate are separated and arranged in two upper and lower stages, and a low heat-generating component is mounted on the first substrate located above, A high heat-generating component is mounted on the second board located at the position. In the power supply device disclosed in Patent Document 2, high heat-generating components are mounted on the upper and lower surfaces of a substrate, and control components are mounted on the lower surface of the substrate.

JP 2014-117106 A Japanese Patent Laying-Open No. 2015-123846

  In the power supply devices of Patent Documents 1 and 2, the high heat-generating component is located at the same level or below the control component in the vertical direction, so that the heat dissipation effect is not sufficient. If the heat dissipation effect is not sufficient, there is a possibility of causing malfunction of the control component, resulting in a decrease in reliability.

  An object of this invention is to provide the power supply device and refrigerator which improve reliability in view of the said problem.

  The present inventor has found that the problem that the heat dissipation effect is not sufficient is caused by the diffusion of heat generated from the high heat-generating component upward. Therefore, the present inventor has focused on the fact that heat is diffused upward by natural convection, and as a result of diligent studies to reduce the heat received by the control component, the present invention has been completed.

  That is, the power supply device of the present invention collects a substrate, a control component group in which control components to be mounted on the substrate are assembled, and a heat generating component that is mounted on the substrate and has a heat generation amount during operation of a predetermined value or more. The heat generating component group is located above the control component group in the vertical direction.

  According to the present invention, heat-generating components having a heat generation amount equal to or greater than a predetermined value are gathered relatively upward, and control components that contribute to reliability are gathered relatively downward. For this reason, even if the heat of the heat generating component generated during operation diffuses upward, the control component group is located below the heat generating component group, so that each control component receives heat from the heat generating component group. Can be suppressed. Therefore, each malfunction of the control component can be reduced, and the reliability can be improved.

  In the power supply device of the present invention, preferably, the substrate is arranged to extend in the vertical direction.

  Thereby, since each of the heat generating component and the control component can be easily arranged above and below in the vertical direction, it is possible to easily realize a power supply device that can suppress the control component group from receiving heat from the heat generating component group.

  Preferably, the power supply device according to the present invention further includes an intermediate component arranged between the heat generating component group and the control component group in the vertical direction.

  By placing a component that is less affected by heat than the control component between the heat generating component group and the control component group, the interval between the control component group and the heat generating component group can be increased, or the effect of heat is greater than that of the control component. Since the small component becomes a wall and heat diffusion due to natural convection can be reduced, it is possible to further suppress the control component group from receiving heat from the heat generating component group.

  The “intermediate part located between” includes parts necessary for the operation of the power supply apparatus and parts unnecessary for the operation of the power supply apparatus.

  In the power supply device of the present invention, the board may be disposed so as to extend in the horizontal direction, the heat generating component group may be disposed on the upper surface of the substrate, and the control component group may be disposed on the lower surface of the substrate.

  In this case, since the heat generating component is mounted on the upper side and the control component is mounted on the lower side with the board as a boundary, it is possible to further suppress the control component group from receiving heat from the heat generating component group.

  In the power supply device according to the present invention, preferably, in the heat generating component group, the heat generating components are arranged in parallel in the horizontal direction.

  Thereby, since the diffusion of heat generated by the heat generating component group is efficient, the heat dissipation efficiency can be improved.

  In the power supply device of the present invention, preferably, when viewed from above in the vertical direction, the heat generating component group and the control component group are arranged in different regions.

  As a result, the control component group can be further moved away from the region where the heat generated by the heat generation component group diffuses, so that the control component group can be further prevented from receiving heat from the heat generation component group.

  Preferably, the power supply device of the present invention further includes a housing including a substrate, a control component group, and a heat generation component group.

  Since the housing, the control component group, and the heat generation component group are less susceptible to the influence of members in the vicinity of the power supply device, the reliability can be further improved.

  The refrigerator of this invention is equipped with the power supply device in any one of the said, and a compressor, and a power supply device controls a compressor.

  According to the refrigerator of the present invention, since the power supply device capable of suppressing the heat from the heat generating component group from being received by the control component group is provided, a refrigerator that improves reliability can be realized.

  As described above, the present invention can provide a power supply device and a refrigerator that improve reliability.

It is a schematic diagram which shows the inside of the refrigerator in Embodiment 1 of this invention. It is a side view which shows typically the power supply device in Embodiment 1 of this invention. It is a side view which shows typically the power supply device in Embodiment 2 of this invention. It is a side view which shows typically the power supply device in Embodiment 3 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. Further, “upper” and “lower” in the present specification mean “upper” and “lower” in the vertical direction. 1-4, V shows a vertical direction and the direction of the arrow is an upward direction.

(Embodiment 1)
With reference to FIGS. 1-4, the power supply device and refrigerator which are one Embodiment of this invention are demonstrated.

  As shown in FIG. 1, the refrigerator 1 according to the first embodiment mainly includes a compressor 2, a wiring 3, and a power supply device 10a. The compressor 2 compresses the refrigerant accommodated in the refrigerator 1. The refrigerant is not particularly limited, but is, for example, chlorofluorocarbon or flammable gas, and it is preferable to use flammable gas or the like from the viewpoint of low environmental load. The power supply device 10a controls on and off of the compressor 2. The wiring 3 electrically connects the compressor 2 and the power supply device 10a.

  The power supply device 10 a is installed in the compressor chamber of the refrigerator 1 and is disposed in the vicinity of the compressor 2. As shown in FIG. 2, the power supply device 10 a includes a substrate 12, a control component group 13, a heat generating component group 14, and an intermediate component 15.

  The substrate 12 is arranged to extend in the vertical direction V. That is, the substrate 12 is installed (vertically placed) in a vertically standing state.

  The control component group 13 is a collection of control components mounted on the substrate 12. The control component controls the compressor 2 by controlling the operation of the high heat generating component. Each of the control components is arranged in parallel in the horizontal direction.

  The heat generating component group 14 is a group of heat generating components 14a to 14c mounted on the substrate 12 and having a heat generation amount during operation of a predetermined value or more. Each of the heat generating components 14a to 14c is arranged in parallel in the horizontal direction. Note that, among the plurality of heat generating components included in the heat generating component group, all of the heat generating components may be arranged in the horizontal direction, or some of the heat generating components may be arranged in the horizontal direction. Further, “parallelly arranged in the horizontal direction” means that the heat generating components are mounted and arranged on one side of the substrate 12, and includes that the positions in the vertical direction are different.

  The heat generating component group 14 is located above the control component group 13 in the vertical direction V. In other words, the heat generating component group 14 as a group of a plurality of heat generating components 14a to 14c is positioned above the control component group 13 as a group of a plurality of control components. In other words, all the heat generating components 14a to 14c are positioned above all the control components, and no heat generating components exist below the control components.

  Further, no other component mounted on the substrate 12 is disposed above the plurality of heat generating components 14a to 14c. That is, there is no component that prevents the heat generated from the heat generating components 14a to 14c from diffusing.

  The intermediate component 15 is disposed between the control component group 13 and the heat generating component group 14 in the vertical direction V. The intermediate part 15 may be singular or plural. The intermediate component 15 includes components necessary for the operation of the power supply device 10a and components unnecessary for the operation of the power supply device. The latter is, for example, a component provided to prevent diffusion of heat generated from the heat-generating component, and specifically is a resin member extending in the horizontal direction. This member preferably has a large height in the vertical direction V from the viewpoint of preventing downward heat diffusion.

  In addition, in the board | substrate 12, the surface where a control component, a heat-emitting component, and an intermediate component are mounted may be one surface near the compressor 2, or may be a surface opposite to this one surface. It may be. Moreover, the direction in which the board | substrate 12 is arrange | positioned in the refrigerator 1 is not limited, The distance of the one surface and the other surface of the board | substrate 12, and the compressor 2 may be the same, or may differ.

  Here, the control components are ICs, except for ICs that are desired to be placed near heat generating components in terms of circuit operation (noise, etc.). For example, a microcomputer, ASIC, FPGA, operational amplifier, comparator, memory IC (EEPROM, Flash memory). A heat-generating component is a component whose temperature rises by about 20 ° C or more with respect to the ambient temperature during operation, except for components included in control components, such as inverters, switching elements (MOSFETs, IGBTs, etc.), power diodes, etc. Bridge diodes, transformers, coils, thermistors, snubber resistors, etc. The intermediate part is a part that is not included in the heat generating part and the control part, such as a relay, a resin plate, a capacitor, and a fuse.

  Further, the components constituting the power supply device 10a are classified into a control component group 13, a heat generating component group 14, and an intermediate component 15 (an intermediate component group in which intermediate components are gathered in a plurality of cases), and the board 12 Are divided into three regions classified in the vertical direction. For this arrangement, a conducting wire or the like is used as appropriate.

  As shown in FIG. 1, the power supply device 10 a of the present embodiment further includes a housing 16 that includes a substrate 12, a control component group 13, a heat generating component group 14, and an intermediate component 15. The housing 16 is configured to be able to seal the inside. Further, the housing 16 is provided with a heat radiating port for releasing the internal heat when the temperature inside becomes high. The housing 16 may be made of any material that is conductive or insulating, and is made of, for example, aluminum, plated steel plate, stainless steel, polycarbonate, ABS resin, polystyrene, or the like. The casing 16 may have a shape that covers a casing formed of an insulating material or a conductive material with a conductive material or an insulating material.

  Then, the effect of the refrigerator 1 and the power supply device 10a of this Embodiment is demonstrated. The power supply device 10a of the present embodiment is mounted on the substrate 12, the control component group 13 in which the control components mounted on the substrate 12 are assembled, and mounted on the substrate 12, and the amount of heat generated during operation is a predetermined value or more. The heat generation component group 14 is a set of heat generation components 14 a to 14 c assembled together, and the heat generation component group 14 is positioned above the control component group 13 in the vertical direction.

  According to the present embodiment, among the components constituting the power supply device 10a, the heat generating component group 14 in which the heat generating components having a heat generation amount equal to or larger than a predetermined value, the components having a heat generation amount less than the predetermined value, and the power supply device Are classified into a control component group 13 in which control components related to reliability are assembled, and a heat generating component group 14 is provided above the control component group 13. The heat generating components 14a to 14c are operated by the control component, and the heat generated therewith diffuses upward. However, since the control component group 13 is positioned below the heat generating component group 14, each control component can be prevented from receiving the heat generated by the heat generating component group 14. That is, since the control component group 13 is not disposed in the heat diffusion path generated from the control component, the heat diffusion from the heat generating component group 14 to the control component group 13 is suppressed. Thus, since the components constituting the power supply device 10a are thermally advantageous, each control component can be prevented from malfunctioning due to heat, so that reliability can be improved.

  In addition, since the power supply device 10a of the present embodiment has the control component group 13 and the heat generating component group 14 mounted on a single substrate 12, it has an effect of cost reduction. Therefore, the power supply device 10a of the present embodiment is low in cost and highly reliable.

  The power supply device 10a may further include a heat sink. However, in the power supply device 10a of the present embodiment, the heat received by the control component is reduced by the arrangement of the control component group 13 and the heat generating component group 14 on the substrate 12. For this reason, even if the power supply device 10a is not provided with a heat sink, it is possible to prevent malfunction due to heat of the control component. If a heat sink is not provided, the cost can be further reduced.

  In power supply device 10a of the present embodiment, substrate 12 is arranged to extend in the vertical direction. For this reason, in the board | substrate 12, since a heat-emitting component is easy to mount upwards and a control component below, the power supply device 10a which can suppress that the control component group 13 receives the heat | fever by the heat-generating component group 14 is easily realizable.

  The power supply device 10a according to the present embodiment further includes an intermediate component 15 disposed between the heat generating component group 14 and the control component group 13 in the vertical direction. By disposing the intermediate component 15 that is less affected by heat than the control component between the heat generating component group 14 and the control component group 13, the interval between the control component group 13 and the heat generating component group 14 can be increased. 15 becomes a wall and natural convection can be suppressed. For this reason, since heat diffusion from the heat generating component group 14 to the control component group 13 can be further suppressed, the influence of heat of the heat generating component group 14 can be further suppressed. When the substrate 12 is arranged so as to extend in the vertical direction, the intermediate component 15 can be easily arranged, and this effect is remarkable.

  In the power supply device 10a of the present embodiment, each of the heat generating components 14a to 14c constituting the heat generating component group 14 is arranged in parallel in the horizontal direction. In this case, since the heat generated by each of the heat generating components 14a to 14c diffuses upward, the influence of heat from other heat generating components on the heat generating components can be reduced. Moreover, the diffusion of heat generated by the heat generating component group 14 is efficient. Furthermore, it is easy to position the control component group 13 below the heat generating component group 14.

  The power supply device 10a according to the present embodiment further includes a housing 16 that includes the substrate 12, the control component group 13, and the heat generating component group 14. The housing 16 is less susceptible to the influence of a member in the vicinity of the power supply device 10a (in the case where the control target is the compressor 2, a combustible gas that is a refrigerant of the compressor 2, etc.), so that the reliability can be further improved.

  The refrigerator 1 according to the present embodiment includes a power supply device 10 a and a compressor 2, and the power supply device 10 a controls the compressor 2.

  According to the refrigerator 1 of the present embodiment, the power supply device 10a that can suppress the control component group 13 from receiving heat from the heat generating component group 14 is provided. For this reason, since the malfunction of the compressor 2 can be prevented, the reliability of the refrigerator 1 can be improved.

  Moreover, when the refrigerant | coolant which the compressor 2 compresses is a combustible gas, it becomes a safety measure with respect to a combustible gas by providing the power supply device 10a which has the housing | casing 16 which can seal an inside in the refrigerator 1. FIG. Moreover, the refrigerator 1 is equipped with the power supply device 10a which has the board | substrate 12 arrange | positioned so that it may extend in a perpendicular direction, Therefore The space of the refrigerator 1 can be utilized effectively.

  Here, in the power supply device 10a of the present embodiment, the heat generating component group 14 in which the heat generating components having a heat generation amount equal to or greater than a predetermined value, and the heat generation amount less than the predetermined value, are greatly related to the reliability of the power supply device. The control parts are grouped into a control part group 13 in which control parts are gathered, and an intermediate part 15 having a calorific value less than a predetermined value and not greatly related to the reliability of the power supply device (an intermediate part group when there are a plurality of intermediate parts 15). In addition, the vertical direction of the substrate 12 is divided into three regions, and the control component group 13, the intermediate component 15, and the heat generating component group 14 are mounted in order from the bottom. However, the power supply device of the present invention may not include an intermediate part. In this case, among the parts whose calorific value is less than the predetermined value and which are not greatly related to the reliability of the power supply device, the parts that are affected by heat are placed in the control parts group, and the parts that are affected less by heat are controlled parts. Placed in a group or heat-generating component group.

  Further, in the power supply device 10a of the present embodiment, in the heat generating component group 14, the heat generating components 14a to 14c are arranged in parallel in the horizontal direction, but may be arranged in parallel in the vertical direction. In the latter case, it is preferable that a component that generates a relatively large amount of heat during operation is disposed above.

  In the power supply device 10a of the present embodiment, the control components are arranged in the horizontal direction in the control component group 13, but may be arranged in the vertical direction. In the latter case, it is preferable that a component having a relatively large contribution to reliability is disposed below.

  Moreover, in this Embodiment, although demonstrated taking the case of the power supply device 10a which controls the compressor 2 of the refrigerator 1, the control object of the power supply device of this invention is not limited to a compressor, The other member which comprises a refrigerator It may be a device other than a refrigerator.

  The power supply device 10a according to the present embodiment includes a housing 16 that includes the substrate 12, the control component group 13, the heat generating component group 14, and the intermediate component 15 therein. May be omitted.

(Embodiment 2)
The power supply device 10b of the second embodiment shown in FIG. 3 basically has the same configuration as the power supply device 10a of the first embodiment, but when viewed from above in the vertical direction, The difference is that the heat generating component group 14 is arranged in a different area. When the power supply device 10b according to the second embodiment is viewed from above, all the heat generating components and all the control components do not overlap.

  According to the power supply device 10b of the second embodiment, since the control component group 13 can be further away from the upward diffusion path of the heat generated from the heat generating component group 14, the heat from the heat generating component group 14 is transferred to the control component group 13. It can be suppressed more.

(Embodiment 3)
The power supply device 10c according to the third embodiment shown in FIG. 4 basically has the same configuration as that of the power supply device 10b according to the second embodiment, but the substrate 12 is arranged so as to extend in the horizontal direction. Different in.

  The substrate 12 is placed horizontally. A heat generating component group 14 is disposed on the upper surface of the substrate 12, and a control component group 13 is disposed on the lower surface of the substrate 12. In the third embodiment, the intermediate part 15 shown in FIGS. 2 and 3 is omitted.

  According to the power supply device 10a of the third embodiment, the heat generating component is mounted on the upper side and the control component is mounted on the lower side with the substrate 12 as a boundary. For this reason, the control component group 13 and the heat generating component group 14 can be separated from each other by the thickness of the substrate 12 in the vertical direction. Further, the substrate 12 can block heat diffusion from the heat generating component group 14. Therefore, the control component group 13 can be prevented from receiving heat generated from the heat generating component group 14.

  Although the embodiments of the present invention have been described as described above, it is also planned from the beginning to combine the features of each embodiment as appropriate. In addition, it should be considered that the embodiment disclosed this time is illustrative and not restrictive in all respects. The scope of the present invention is shown not by the above-described embodiment but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

  DESCRIPTION OF SYMBOLS 1 Refrigerator, 2 Compressor, 3 Wiring, 10a, 10b, 10c Power supply device, 12 Board | substrate, 13 Control component group, 14 Heat generating component group, 14a, 14b, 14c Heat generating component, 15 Intermediate components, 16 Case, V Vertical direction.

Claims (8)

A substrate,
A control component group in which control components mounted on the board are assembled;
A heat generating component group that is mounted on the substrate and that collects heat generating components whose heat generation amount during operation is a predetermined value or more,
With
The heat generating component group is a power supply device positioned above the control component group in the vertical direction.   The power supply device according to claim 1, wherein the substrate is arranged to extend in a vertical direction.   The power supply device according to claim 2, further comprising an intermediate component disposed between the heat generating component group and the control component group in a vertical direction. The substrate is arranged to extend in a horizontal direction;
The power supply device according to claim 1, wherein the heat generating component group is disposed on an upper surface of the substrate, and the control component group is disposed on a lower surface of the substrate.   5. The power supply device according to claim 1, wherein in the heat generating component group, each of the heat generating components is arranged in parallel in a horizontal direction.   The power supply device according to any one of claims 1 to 5, wherein when viewed from above in the vertical direction, the heat generating component group and the control component group are arranged in different regions.   The power supply device according to claim 1, further comprising a housing including the substrate, the control component group, and the heat generating component group. The power supply device according to any one of claims 1 to 7,
A compressor,
With
The power supply device controls the compressor, and is a refrigerator.

Images