JP2018049870A - Electrical machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical machine capable of cooling heating components at high precisely while embedding height difference between the heating components.SOLUTION: A division wall of a housing becomes a step shape to match the height of each of a first heating component and a second heating component so as to be contacted with the first and second heating components which have a different height. In a passage formed by the division wall and a lid, a first cooling passage positioned oppositely to the first heating component, a second cooling passage positioned oppositely to the second heating component, and a first middle passage that connects the first and second cooling passages are formed. The lid becomes the step shape to match the step shape of the division wall so that the height of the first and second cooling passages becomes the same.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electric device in which a heat generating component provided in one space via a partition wall of a housing is cooled by a refrigerant flowing in a flow path in the other space.

  Conventionally, a cooler for cooling a plurality of semiconductor elements, in which a plurality of cooling fins are provided in a refrigerant flow path, is known. (For example, refer to Patent Document 1). In this cooler, the cooling fin is provided so as to be a partition wall of the coolant channel, and further, a space is formed in which the coolant separated by the partition wall is joined. That is, in this cooler, a cooling fin is provided for each of a plurality of semiconductor elements.

  In addition, cooling is configured such that a plurality of electronic components having different heights mounted on a printed circuit board are cooled by a refrigerant flowing through a planar cooling plate by interposing a silicone gel-like substance as a heat dissipation spacer. An apparatus is known (see, for example, Patent Document 2). In this cooling device, a step between components caused by a difference in height of electronic components is filled with a silicone gel material.

JP 2007-335588 A Japanese Patent Laid-Open No. 11-026968

  In the heat generating components in the electric equipment, there are a mixture of components having a low height such as semiconductor elements and components having a high height such as magnetic components such as a transformer and a reactor. When adopting a planar cooler to cool these heat generating components, a structure that fills the height difference between the components is necessary.

  Here, for example, when applying the conventional technique described in Patent Document 2 and filling the height difference between parts by filling with a filler such as silicone or resin, a place where more filler is filled However, the thermal resistance increases compared with the surrounding area, and as a result, the temperature of the heat generating component increases. Moreover, if a filler is used, there is a concern about an increase in cost.

  On the other hand, when the difference in height between components is adjusted according to the length of wiring when mounting a heat generating component on a circuit board, the longer the wiring length, the lower the heat generation component holding capacity and the malfunction due to noise. It is easy to cause an increase in wiring heat generation due to the long wiring.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an electric device that can efficiently cool a heat generating component while filling a height difference between the heat generating components. To do.

  The electrical device according to the present invention includes a housing having a partition wall contacting the first heat generating component and the second heat generating component having different heights, and the first heat generating component through the partition wall by covering the opening of the housing. And a lid that forms a flow path through which a refrigerant for cooling the second heat generating component flows, and the partition wall is in contact with the first heat generating component and the second heat generating component, and the first heat generating component and A step shape is formed in accordance with each height of the second heat generating component, and the flow path formed by the partition wall and the lid includes a first cooling flow channel positioned opposite to the first heat generating component, A second cooling channel positioned opposite to the two heat generating components, a first intermediate channel header connecting the first cooling channel and the second cooling channel, and a lid, Match the step shape of the partition wall so that the first cooling water channel and the second cooling water channel have the same height. Te in which has a stepped shape.

  According to this invention, the partition wall of the housing is formed in a step shape according to the height of each of the plurality of heat generating components having different heights, and the lid is formed in a step shape according to the step shape of the partition wall. ing. As a result, it is possible to obtain an electrical device that can efficiently cool the heat generating component while filling the height difference between the heat generating components.

It is a perspective view which shows the external appearance of the electric equipment in Embodiment 1 of this invention. It is arrow sectional drawing along the II-II line | wire of FIG. It is a top view when it sees from a III direction in the state which removed the 2nd lid | cover of the electric equipment of FIG. It is sectional drawing which shows the 1st modification of the electric equipment of FIG. It is sectional drawing which shows the 2nd modification of the electric equipment of FIG. It is sectional drawing which shows the electric equipment in Embodiment 2 of this invention. It is sectional drawing which shows the 1st modification of the electric equipment of FIG. It is sectional drawing which shows the 2nd modification of the electric equipment of FIG. It is a top view when it sees from the III direction in the state which removed the 2nd cover of the electric equipment in Embodiment 3 of this invention. It is a top view which shows the 1st modification of the electric equipment of FIG. It is a top view which shows the 2nd modification of the electric equipment of FIG. It is a top view which shows the 3rd modification of the electric equipment of FIG. It is a top view which shows the 4th modification of the electric equipment of FIG. It is a top view which shows the 1st another example of the electric equipment in Embodiment 3 of this invention. It is a top view which shows the 2nd another example of the electric equipment in Embodiment 3 of this invention. It is a top view which shows the 3rd another example of the electric equipment in Embodiment 3 of this invention. It is a top view which shows the 4th another example of the electric equipment in Embodiment 3 of this invention. It is a top view which shows the 5th another example of the electric equipment in Embodiment 3 of this invention. It is sectional drawing which shows the electric equipment in Embodiment 4 of this invention. It is a top view when it sees from the III direction in the state which removed the 2nd cover of the electric equipment in Embodiment 4 of this invention. It is sectional drawing along the XXI line of FIG. It is sectional drawing which shows another example of the electric equipment in Embodiment 4 of this invention. It is a top view when it sees from a III direction in the state which removed the 2nd cover of the electric equipment of FIG. It is a top view which shows the 1st modification of the electric equipment of FIG. It is a top view which shows the 2nd modification of the electric equipment of FIG.

  Hereinafter, an electric device according to the present invention will be described with reference to the drawings in accordance with a preferred embodiment. In the description of the drawings, the same portions or corresponding portions are denoted by the same reference numerals, and redundant description is omitted.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an external appearance of electrical apparatus 1 according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a plan view when viewed from the III direction with the second lid 4 of the electrical apparatus 1 of FIG. 1 removed.

  Here, in the electric device 1 of FIG. 1, the width direction is the X direction, the depth direction is the Y direction, and the height direction is the Z direction. The X direction and the Y direction are orthogonal to each other, and the Z direction is orthogonal to the X direction and the Y direction.

  The electric device 1 according to the first embodiment is housed in a space formed by the housing 2, the first lid 3 that covers the upper surface opening of the housing 2, and the housing 2 and the first lid 3. The plurality of cooling fins provided in the flow path 5 formed by the heat generating electrical component 8, the second lid 4 covering the bottom opening of the housing 2, and the housing 2 and the second lid 4. 12 is provided.

  Inside the housing 2, a partition wall 9 is provided that separates the space in which the electrical component 8 is stored and the flow path 5. The electrical component 8 includes a circuit board 6, a first heat generating component 7 a and a second heat generating component 7 b mounted on the circuit board 6.

  The surface of the first heat generating component 7 a that faces the surface mounted on the circuit board 6 is in contact with the first component contact surface 9 a of the partition wall 9. The second heat generating component 7 b has a surface facing the surface mounted on the circuit board 6 in contact with the second component contact surface 9 b of the partition wall 9.

  In order to cool the first heat generating component 7a and the second heat generating component 7b most efficiently, the first heat generating component 7a and the second heat generating component 7b are respectively connected to the first component contact surface 9a and the second heat generating component 7b. It is desirable to provide the component contact surface 9b so as to be in direct contact.

  However, in consideration of dimensional tolerances, surface accuracy, etc. of the first heat generating component 7a and the second heat generating component 7b, the first heat generating component 7a and the second heat generating component 7b are respectively connected to the first component contact surface 9a. And the second component contact surface 9b may be provided so as to come into contact with each other through an inclusion such as a sheet member or grease. In this case, the higher the thermal conductivity of the inclusions such as sheet members and grease, the lower the thermal resistance at the contact surface between each heat generating component and each component contact surface, so that each heat generating component can be cooled more efficiently. .

  Thus, the housing | casing 2 has the partition 9 which contacts the 1st heat generating component 7a and the 2nd heat generating component 7b from which height differs.

  The first heat generating component 7a and the second heat generating component 7b are different in height from each other, and the relationship between the height L1 of the first heat generating component 7a and the height L2 of the second heat generating component is L1> L2. It has become.

  Specific examples of the first heat generating component 7a and the second heat generating component 7b include an IGBT, a MOSFET, a diode, a power module, a reactor, and a transformer. More specifically, the first heat generating component 7a having a height L1 is a transformer, a reactor, or the like, and the second heat generating component 7b having a height L2 is an IGBT, a MOSFET, a diode, a power module, or the like.

  In the partition wall 9 of the housing 2, the second component contact surface 9 b is positioned so as to be shifted in the Z direction by the difference between the height L1 and the height L2 with respect to the first component contact surface 9 a. The partition wall 9 has a step shape according to the height of each of the first heat generating component 7a and the second heat generating component 7b so as to come into contact with the first heat generating component 7a and the second heat generating component 7b. . The step surface of the step portion provided in the partition wall 9 is perpendicular to the first component contact surface 9a and the second component contact surface 9b.

  As described above, the partition wall 9 of the housing 2 is adjusted to the height of each of the first heat generating component 7a and the second heat generating component 7b so as to be in contact with the first heat generating component 7a and the second heat generating component 7b. It has a step shape.

  The second lid 4 covers the opening of the housing 2 to form a flow path 5 through which a refrigerant for cooling the first heat-generating component 7a and the second heat-generating component 7b passes through the partition wall 9.

  The flow path 5 includes a first cooling flow path 5a positioned opposite to the first heat generation component 7a, a second cooling flow path 5b positioned opposite to the second heat generation component 7b, and a first A first intermediate flow path header 5f that connects the cooling flow path 5a and the second cooling flow path 5b, and a first flow path header 5d that is connected to a supply pipe 10a that supplies the refrigerant to the flow path 5. The second flow path header 5e connected to the discharge pipe 10b for discharging the refrigerant from the flow path 5 is formed.

  As a configuration for supplying the refrigerant to the flow path 5, the electrical device 1 is connected to the first flow path header 5 d of the flow path 5, and a supply pipe 10 a that supplies the refrigerant toward the first flow path header 5 d. And a supply side protrusion 11a to which the supply pipe 10a is attached.

  As a configuration for discharging the refrigerant from the flow path 5, the electrical device 1 is connected to the second flow path header 5e of the flow path 5, and a discharge pipe 10b for discharging the refrigerant from the second flow path header 5e; It is provided with the housing | casing 2, and is provided with the discharge side projection part 11b to which the discharge pipe 10b is attached.

  The supply pipe 10a and the discharge pipe 10b are fixed to the supply-side protrusion 11a and the discharge-side protrusion 11b by various methods such as press fitting, shrink fitting, and a screw structure, respectively.

  The first cooling flow path 5a is positioned to face the first component contact surface 9a, and the second cooling flow path 5b is positioned to face the second component contact surface 9b. Each of the first cooling channel 5a and the second cooling channel 5b is provided with a plurality of cooling fins 12 for efficiently cooling the first heat generating component 7a and the second heat generating component 7b. .

  Each cooling fin 12 provided in the first cooling flow path 5a is provided to extend in the X direction and is adjacent to an equal gap with respect to the Y direction. Each cooling fin 12 provided in the first cooling flow path 5 a has the same shape of a flat plate, and both end faces are in contact with the second lid 4 and the partition wall 9.

  Each cooling fin 12 provided in the second cooling flow path 5b has the same configuration as each cooling fin 12 provided in the first cooling flow path 5a.

  The second cooling flow path 5b is shifted from the first cooling flow path 5a in the Z direction by a difference between the height L1 and the height L2. A first intermediate flow path header 5f is provided at a step formed between the first cooling flow path 5a and the second cooling flow path 5b, and the first cooling is performed via the first intermediate flow path header 5f. The refrigerant flows from the channel 5a to the second cooling channel 5b.

  The second lid 4 is formed so that the height of each of the first cooling flow path 5a and the second cooling flow path 5b, that is, the flow path 5 having the same height in the Z direction can be formed. It has a step shape to match the step shape. The step surface of the step portion provided on the second lid 4 is parallel to the step surface of the step portion provided on the partition wall 9.

  In this way, the second lid 4 has a step shape in accordance with the step shape of the partition wall 9 so that the heights of the first cooling water channel 5a and the second cooling water channel 5b are the same.

  The direction in which the refrigerant flows is the flow direction 14, and the refrigerant is the supply pipe 10a, the first flow path header 5d, the first cooling flow path 5a, the first intermediate flow path header 5f, and the second cooling flow path. 5b, the path of the second flow path header 5e and the discharge pipe 10b is circulated by a pump or the like. The refrigerant flowing in the discharge pipe 10b is radiated by a heat exchanger or the like, and the heat-radiated refrigerant flows in the supply pipe 10a.

  The casing 2 is preferably molded by die casting, casting, or the like in order to be integrally molded with the cooling fin 12, but after these parts are molded separately, these parts are screwed, bolted, welded, You may fix by various methods, such as brazing.

  As described above, in the first embodiment, the partition wall 9 of the housing 2 is formed in a step shape according to the height of each of the first heat generating component 7a and the second heat generating component 7b, and the step shape of the partition wall 9 is also set. In addition, the second lid 4 is configured to have a stepped shape.

  With this configuration, the first heat generating component 7a and the second heat generating component 7b having different heights can be held at positions close to each other in the circuit board 6, and as a result, malfunction due to noise can be prevented. In addition to the suppression, it is possible to suppress the wiring heat generation due to the long wiring. In addition, since both the first heat-generating component 7a and the second heat-generating component 7b can be brought into contact with the partition wall 9 of the housing 2, the first heat-generating component 7a and the second heat-generating component 7a and the second heat-generating component 7b are cooled by the refrigerant flowing in the flow path 5. The heat generating component 7b can be efficiently cooled.

  Moreover, when the shape of the 2nd cover part is a flat plate, the height of the 1st cooling flow path 5a differs from the height of the 2nd cooling flow path 5b. Therefore, there is a concern that the refrigerant flows nonuniformly in the first cooling flow path 5a and the second cooling flow path 5b in the flow path 5, and the cooling capacity is partially reduced. On the other hand, in the first embodiment, since the shape of the second lid 4 is configured in accordance with the shape of the partition wall 9, the refrigerant can be made to flow uniformly in the flow path 5, and the first heat generating component 7a and The second heat generating component 7b can be efficiently cooled.

  Next, a modification of the electric device 1 in FIG. 2 will be described with reference to FIGS. 4 and 5. 4 and 5 are cross-sectional views showing first and second modifications of the electric device 1 of FIG.

  As a first modified example, by providing a draft that can be realized by a manufacturing method such as die casting, a step portion provided in the partition wall 9 and a second lid 4 are provided as shown in FIG. Each step portion may be inclined. In this case, the inclination angle θ1 applied to the stepped portion provided in the partition wall 9 and the inclination angle θ2 applied to the stepped portion provided in the second lid 4 may be the same or different. Good.

  As a second modification, as shown in FIG. 5, the shape of the corner of the step surface of the step provided in the partition wall 9 and the corner of the step surface of the step provided in the second lid 4 are shown. The shape may be a curved surface R.

  As described above, according to the first embodiment, the electric device includes a housing having a partition wall contacting the first heat generating component and the second heat generating component having different heights, and the partition wall by covering the opening of the housing. And a lid that forms a flow path through which a refrigerant for cooling the first heat-generating component and the second heat-generating component is formed.

  The partition wall is configured to have a step shape in accordance with the height of each of the first heat generating component and the second heat generating component so as to come into contact with the first heat generating component and the second heat generating component. The flow path formed by the partition wall and the lid includes a first cooling flow path, a second cooling flow path, and a first intermediate connecting the first cooling flow path and the second cooling flow path. A flow path header is formed. The lid is configured to have a step shape in accordance with the step shape of the partition so that the first cooling water channel and the second cooling water channel have the same height.

  By configuring as described above, while filling the difference in height between heat-generating parts between low-height parts such as semiconductor elements and high-height parts such as magnetic parts such as transformers and reactors, The heat generating component can be efficiently cooled. In addition, by adjusting the shape of the partition of the housing and the shape of the lid that covers the opening of the housing, the height difference between the heat generating parts is filled, so the cost increases due to the use of extra filler Can be prevented.

Embodiment 2. FIG.
In Embodiment 2 of the present invention, in addition to the first heat generating component 7a and the second heat generating component 7b, a third heat generating component 7c having a height different from these is mounted on the circuit board 6. The electrical device 1 will be described. In the second embodiment, description of points that are the same as in the first embodiment will be omitted, and differences from the first embodiment will be mainly described.

  FIG. 6 is a cross-sectional view showing electric apparatus 1 according to Embodiment 2 of the present invention. In addition, the perspective view which shows the electric equipment 1 in Embodiment 2 is the same as that of previous FIG. 1, and FIG. 6 is corresponded to the arrow sectional drawing along the II-II line | wire of previous FIG.

  As shown in FIG. 6, the electrical component 8 includes a circuit board 6, a first heating component 7 a, a second heating component 7 b, and a third heating component 7 c mounted on the circuit board 6. The surface of the third heat generating component 7 c that faces the surface mounted on the circuit board 6 is in contact with the third component contact surface 9 c of the partition wall 9.

  The third heat generating component 7c is different in height from the first heat generating component 7a and the second heat generating component 7b, and the height L1 of the first heat generating component 7a and the height L2 of the second heat generating component 7a. And the height L3 of the third heat generating component 7c is L1> L3> L2.

  In this way, the partition wall 9 is further in contact with the third heat generating component 7c in addition to the first heat generating component 7a and the second heat generating component 7b.

  In the partition wall 9 of the housing 2, the third component contact surface 9 c is positioned with respect to the second component contact surface 9 b so as to be shifted in the Z direction by the difference between the height L3 and the height L2.

  The partition wall 9 is in contact with the first heat generating component 7a, the second heat generating component 7b, and the third heat generating component 7c, so that the first heat generating component 7a, the second heat generating component 7b, and the third heat generating component 7c are in contact with each other. It has a step shape according to each height.

  The step surface of the step portion provided between the first component contact surface 9a and the second component contact surface 9b of the partition wall 9 is in relation to the first component contact surface 9a and the second component contact surface 9b. It is vertical. The step surface of the step portion provided between the second component contact surface 9b and the third component contact surface 9c of the partition wall 9 is in relation to the second component contact surface 9b and the third component contact surface 9c. It is vertical.

  The second lid 4 covers the opening of the housing 2 so that a coolant for cooling the first heat generating component 7a, the second heat generating component 7b, and the third heat generating component 7c flows through the partition wall 9. A flow path 5 is formed.

  The flow path 5 includes a first cooling flow path 5a, a second cooling flow path 5b, a first intermediate flow path header 5f, a first flow path header 5d, and a second flow path header 5e. And a second intermediate flow path header 5g that connects the third cooling water path 5c located opposite to the third heat generating component 7c, and the second cooling water path 5b and the third cooling water path 5c. Are further formed.

  The third cooling flow path 5c is located opposite to the third component contact surface 9c. The third cooling channel 5c is provided with cooling fins 12 in the same manner as the first cooling channel 5a and the second cooling channel 5b.

  The third cooling flow path 5c is shifted from the second cooling flow path 5b by a difference between the height L3 and the height L2 in the Z direction. A second intermediate flow path header 5g is provided at a step formed between the second cooling flow path 5b and the third cooling flow path 5c, and the second cooling is performed via the second intermediate flow path header 5g. The refrigerant flows from the channel 5b to the third cooling channel 5c. The second lid 4 has a partition wall 9 so that the first cooling flow path 5a, the second cooling flow path 5b, and the third cooling flow path 5c can form a flow path 5 having the same height. The step shape is adapted to the step shape.

  As described above, in the second embodiment, the partition wall 9 of the housing 2 has a stepped shape in accordance with the heights of the first heat generating component 7a, the second heat generating component 7b, and the third heat generating component 7c. The second lid 4 is configured to have a step shape in accordance with the step shape of the partition wall 9. That is, in the second embodiment, a plurality of partition walls 9 and a second lid 4 are provided with a plurality of heat generating components having different lengths in the circuit board 6 so as to be able to cope with the case. It is comprised so that a level | step difference part may be provided.

  With this configuration, the same effects as those of the first embodiment can be obtained, and the second heat generating component 7b and the third heat generating component 7c having different heights can be connected to each other in the circuit board 6. As a result, it is possible to suppress malfunction due to noise, and it is possible to suppress wiring heat generation due to the length of the wiring.

  In addition, since the first heat generating component 7a, the second heat generating component 7b, and the third heat generating component 7c can be brought into contact with the partition wall 9 of the housing 2, the first heat generating component is caused by the refrigerant flowing in the flow path 5. 7a, the second heat generating component 7b, and the third heat generating component 7c can be efficiently cooled.

  6 may be applied to the stepped portion provided in the partition wall 9 and the stepped portion provided in the second lid 4 by applying the configuration shown in FIG. Good. Further, by applying the configuration of FIG. 5 to the configuration of FIG. 6, the shape of the corner of the step surface of the step portion provided in the partition wall 9 and the step portion provided in the second lid 4 are applied. The shape of the corner of the step surface may be a curved surface R.

  Next, a modification of the electric device 1 in FIG. 6 will be described with reference to FIGS. 7 and 8. 7 and 8 are cross-sectional views showing first and second modifications of the electric device 1 shown in FIG.

  In FIG. 6, the relationship between the height L1, the height L2, and the height L3 is L1> L3> L2, but as a first modification, as shown in FIG. 7, L1 = L3> L2 Even if it becomes, the same effect as the case where it is set to L1> L3> L2 is acquired.

  As a second modification, as shown in FIG. 8, the relationship between the height L1, the height L2, and the height L3 is such that L1> L3> L2 even if L1> L2> L3. The same effect can be obtained.

  6 to 8 exemplify the case where there are three types of heat generating components, even if there are four or more types, each of the heat generation is generated in each of the partition wall 9 and the second lid 4. The same effect can be obtained by providing the step portion corresponding to the part.

  As described above, according to the second embodiment, the partition, the flow path formed by the partition and the lid, and the lid are configured as follows with respect to the configuration of the first embodiment.

  That is, the partition walls are at the respective heights of the first heat generating component, the second heat generating component, and the third heat generating component so as to come into contact with the first heat generating component, the second heat generating component, and the third heat generating component. It is comprised so that it may become a step shape in total. In addition to the first cooling water channel, the second cooling water channel, and the first intermediate flow channel header, the flow channel formed by the partition wall and the lid includes the third cooling water channel, the second cooling water channel, and the first cooling water channel. And a second intermediate flow path header that connects the three cooling water paths. The lid is configured to have a step shape in accordance with the step shape of the partition so that the first cooling water channel, the second cooling water channel, and the third cooling water channel have the same height.

  Even when configured as described above, the same effects as those of the first embodiment can be obtained.

Embodiment 3 FIG.
In the third embodiment of the present invention, the electric device 1 in which the rectifying member 13 is provided in each of the first flow path header 5d and the second flow path header 5e with respect to the configuration of the first embodiment will be described. To do. In the third embodiment, description of points that are the same as in the first and second embodiments will be omitted, and differences from the first and second embodiments will be mainly described.

  FIG. 9 is a plan view when viewed from the III direction with the second lid 4 of the electric device 1 according to the third embodiment of the present invention removed. In addition, the perspective view which shows the electric equipment 1 in Embodiment 3 is the same as that of previous FIG. 1, FIG. 9 shows the previous state with the second lid 4 of the electric equipment 1 in Embodiment 3 removed. It corresponds to a plan view when viewed from the III direction in FIG.

  A plurality of rectifying members 13 are provided in each of the first flow path header 5d and the second flow path header 5e. The rectifying member 13 has a plurality of cooling fins 12 when the refrigerant flowing in from the supply pipe 10a flows to the cooling fins 12 provided in each of the first cooling flow path 5a and the second cooling flow path 5b. This is to suppress the drift of the refrigerant flowing between the adjacent cooling fins 12.

  Each rectifying member 13 provided in the first flow path header 5d has the same shape of a flat plate, and both end surfaces are in contact with the second lid 4 and the partition wall 9.

  Each rectifying member 13 provided in the first flow path header 5d is provided along the Y direction, and forms a linear row in which the gaps W2 between the adjacent rectifying members 13 are equal to each other. There are three such rows in total, and the gaps W1 between adjacent rows are equal to each other. When the straightening members 13 arranged in three rows are viewed from the X direction, the straightening members 13 in each row are provided so as to overlap each other.

  Each rectifying member 13 provided in the second flow path header 5e has the same configuration as each rectifying member 13 provided in the first flow path header 5d.

  The casing 2 is preferably molded by die casting, casting, or the like in order to be integrally molded with the cooling fin 12, the rectifying member 13, the supply side projection 11a and the discharge side projection 11b. After being molded in the body, these parts may be fixed by various methods such as screws, bolts, welding, brazing and the like.

  As described above, in the third embodiment, the first flow path header 5d and the second flow path header 5e are each provided with a plurality of rectifying members 13.

  With this configuration, the flow of the refrigerant flowing between the cooling fins 12 can be suppressed by the rectifying member 13 and the refrigerant flow can be equalized. As a result, the cooling performance is not biased. Efficient cooling can be realized over the entire area of the fin 12, and each heat generating component having a different height can be efficiently cooled.

  Further, by providing the rectifying member 13 in each of the first flow path header 5d and the second flow path header 5e so that the drift of the refrigerant flow rate can be suppressed, the first flow path header 5d or the second flow path header 5d. As long as the position is along the flow path header 5e, the supply pipe 10a and the discharge pipe 10b can be arranged at any position of the housing 2.

  Next, a modification of the electric device 1 in FIG. 9 will be described with reference to FIGS. FIGS. 10-13 is a top view which shows the 1st-4th modification of the electric equipment 1 of FIG.

  As a first modification, the arrangement of the rectifying members 13 provided in each of the first flow path header 5d and the second flow path header 5e may be the arrangement shown in FIG. In FIG. 10, among the three rows of rectifying members 13 provided in the first flow path header 5 d, each rectifying member 13 in the middle row is such that the middle portion of each rectifying member 13 is the rectifying member in each row on both sides. 13 and are arranged opposite to the gaps between the rectifying members 13 adjacent in the Y direction. Each rectifying member 13 provided in the second flow path header 5e has the same configuration as each rectifying member 13 provided in the first flow path header 5d.

  As a second modification, the arrangement of the rectifying members 13 provided in each of the first flow path header 5d and the second flow path header 5e may be the arrangement shown in FIG. In FIG. 11, the three rows of rectifying members 13 provided in the first flow path header 5 d are arranged so that the gap between the rectifying members 13 adjacent to each other in the Y direction becomes smaller as the row is closer to the cooling fin 12. ing. Each rectifying member 13 provided in the second flow path header 5e has the same configuration as each rectifying member 13 provided in the first flow path header 5d.

  As a third modification, the arrangement of the rectifying members 13 provided in each of the first flow path header 5d and the second flow path header 5e may be the arrangement shown in FIG. In FIG. 12, the three rows of rectifying members 13 provided in the first flow path header 5 d are arranged so that the rectifying members 13 in each row are inclined toward the cooling fins 12. Each rectifying member 13 provided in the second flow path header 5e has the same configuration as each rectifying member 13 provided in the first flow path header 5d.

  As a fourth modification, the arrangement of the rectifying members 13 provided in each of the first flow path header 5d and the second flow path header 5e may be the arrangement shown in FIG. In FIG. 13, the three rows of rectifying members 13 provided in the first flow path header 5 d have the rectifying members 13 on the upstream side of each row inclined toward the opposite side of the cooling fins 12, and the rectification on the downstream side of each row. The members 13 are arranged so as to be inclined toward the cooling fins 12 respectively. Each rectifying member 13 provided in the second flow path header 5e has the same configuration as each rectifying member 13 provided in the first flow path header 5d.

  In the third embodiment, the case where the rectifying member 13 is provided in each of the first flow path header 5d and the second flow path header 5e is shown with respect to the configuration of the first embodiment. As shown in FIGS. 14 to 18, the rectifying member 13 may be provided in each of the first flow path header 5 d and the second flow path header 5 e with respect to the configuration of the second embodiment.

  Here, with respect to the configuration of the second embodiment, with respect to the electric device 1 in which the rectifying member 13 is provided in each of the first flow path header 5d and the second flow path header 5e, FIGS. The description will be given with reference.

  FIGS. 14-18 is a top view which shows the 1st-5th another example of the electric equipment 1 in Embodiment 3 of this invention. In addition, arrangement | positioning of the rectifying member 13 shown in FIGS. 14-18 is the same as that of the rectifying member 13 shown in FIGS.

  As described above, according to the third embodiment, each of the first flow path header and the second flow path header adjacent to each of the cooling fins adjacent to the configuration of the first and second embodiments is provided. A plurality of rectifying members that suppress the drift of the refrigerant flowing between the fins are provided.

  By configuring as described above, it is possible to realize efficient cooling throughout the cooling fins without causing unevenness in cooling performance, and it is possible to efficiently cool the heat generating components having different heights.

Embodiment 4 FIG.
In the fourth embodiment of the present invention, an electrical device 1 having a configuration of the first intermediate flow path header 5f different from that of the first embodiment will be described. In the fourth embodiment, description of points that are the same as in the first to third embodiments will be omitted, and differences from the first to third embodiments will be mainly described.

  FIG. 19 is a cross sectional view showing electric apparatus 1 according to the fourth embodiment of the present invention. FIG. 20 is a plan view when viewed from the III direction with the second lid 4 of the electric device 1 according to the fourth embodiment of the present invention removed. FIG. 21 is a sectional view taken along line XXI in FIG.

  In addition, the perspective view which shows the electric equipment 1 in Embodiment 4 is the same as that of previous FIG. 1, FIG. 19 is corresponded to the arrow sectional drawing along the II-II line | wire of previous FIG. Reference numeral 20 corresponds to a plan view when viewed from the III direction of FIG.

  Here, in the first to third embodiments, the refrigerant in the first cooling channel 5a and the second cooling channel 5b flows in the same direction. On the other hand, in the fourth embodiment, the flow directions of the refrigerant in the first cooling channel 5a and the second cooling channel 5b are different. That is, as shown in FIG. 19, the refrigerant in the first cooling flow path 5a flows in the direction perpendicular to the paper surface and from the front to the back of the paper surface, and the refrigerant in the second cooling flow path 5b flows on the paper surface. It flows in the vertical direction from the back of the page to the front.

  As described above, in the fourth embodiment, unlike the first to third embodiments, the first cooling flow path 5a and the second cooling flow path 5b differ in the direction in which the refrigerant flows.

  As shown in FIG. 20, the flow path 5 has a substantially U shape when viewed from the direction III in FIG. 1 with the second lid 4 of the electric device 1 removed.

  Each cooling fin 12 provided in the first cooling flow path 5a is provided to extend in the Y direction and is adjacent to an equal gap in the X direction. Each cooling fin 12 provided in the first cooling flow path 5 a has the same shape of a flat plate, and both end faces are in contact with the second lid 4 and the partition wall 9.

  Each cooling fin 12 provided in the second cooling flow path 5b has the same configuration as each cooling fin 12 provided in the first cooling flow path 5a.

  The first intermediate flow path header 5f provided between the first cooling flow path 5a and the second cooling flow path 5b is a refrigerant between the first cooling flow path 5a and the second cooling flow path 5b. It functions as a folding portion 15 that makes the flow direction different. In addition, the first intermediate flow path header 5f functioning as the folded portion 15 is provided with a step portion for filling the difference between the height L1 and the height L2, and has a step shape.

  As described above, in the fourth embodiment, the first intermediate flow path header 5f is the folded portion 15 that makes the refrigerant flow directions different between the first cooling flow path 5a and the second cooling flow path 5b. Configured to work.

  By configuring in this way, the flow path width of each of the first cooling flow path 5a and the second cooling flow path 5b, that is, the width in the X direction is reduced, so that the cross-sectional area of the flow path is also reduced. The flow rate is improved. As a result, the first heat generating component 7a and the second heat generating component 7b can be cooled more efficiently.

  Subsequently, with respect to the configuration of the second embodiment, the electric device 1 configured so that each of the first intermediate flow path header 5f and the second intermediate flow path header 5g functions as the folded portion 15. This will be described with reference to FIGS.

  FIG. 22 is a cross-sectional view showing another example of electric device 1 according to Embodiment 4 of the present invention. FIG. 23 is a plan view when viewed from the III direction with the second lid 4 of the electrical apparatus 1 of FIG. 22 removed.

  In the fourth embodiment, the first intermediate flow path header 5f functions as the folded portion 15 that makes the flow direction of the refrigerant different between the first cooling flow path 5a and the second cooling flow path 5b. Although the case where it comprises is illustrated, as shown to FIG. 22 and FIG. 23, each of the 1st intermediate flow path header 5f and the 2nd intermediate flow path header 5g with respect to the structure of previous Embodiment 2 is shown. You may comprise so that it may function as the folding | returning part 15. FIG.

  That is, the first intermediate flow path header 5f functions as a turn-back portion 15 that makes the refrigerant flow directions different between the first cooling flow path 5a and the second cooling flow path 5b, and the second intermediate flow The path header 5g functions as a turn-back portion 15 that makes the flow direction of the refrigerant different between the second cooling flow path 5b and the third cooling flow path 5c.

  Next, a modified example of the electric device 1 in FIG. 23 will be described with reference to FIGS. 24 and 25. 24 and 25 are plan views showing first and second modifications of the electric apparatus 1 of FIG.

  As a first modified example, as shown in FIG. 24, the first intermediate flow path header 5f makes the refrigerant flow directions different between the first cooling flow path 5a and the second cooling flow path 5b. The second intermediate flow path header 5g may function as the folded portion 15 and may not function as the folded portion 15. In this case, the flow direction of the refrigerant is the same in the second cooling channel 5b and the third cooling channel 5c.

  As a second modification, as shown in FIG. 25, the first intermediate flow path header 5 f is prevented from functioning as the folded portion 15, and the second intermediate flow path header 5 g is functioned as the folded portion 15. It may be. In this case, the flow direction of the refrigerant is the same in the first cooling flow path 5a and the second cooling flow path 5b.

  As can be seen from FIGS. 23 to 25, at least one of the first intermediate flow path header 5 f and the second intermediate flow path header 5 g is a folded portion that makes the refrigerant flow direction different between the connected cooling water channels. Can be functional.

  As described above, according to the fourth embodiment, as compared with the configuration of the first embodiment, the first intermediate flow path header serves as a folded portion that makes the refrigerant flow direction different between the connected cooling water channels. Configured to work. Further, with respect to the configuration of the second embodiment, at least one of the first intermediate flow path header and the second intermediate flow path header is folded so that the coolant flow direction differs between the connected cooling water channels. It is comprised so that it may function as a part.

  With the configuration described above, the flow rate of the refrigerant is improved, so that each heat generating component can be cooled more efficiently.

  As mentioned above, although Embodiment 1-4 of this invention was demonstrated, the figure corresponding to each Embodiment 1-4 shows an example, This invention can take a various form.

  Although the case where the cooling fin 12 is a straight type fin is illustrated in the first to fourth embodiments, the cooling fin 12 may take various shapes such as a pin fin and an offset fin.

  Each configuration shown in FIGS. 4 and 5 is not only applied to the configuration of the first embodiment, but can also be applied to the configurations of the second to fourth embodiments.

  In the rectifying member 13, the case where the gaps W <b> 1 between adjacent rows are equally spaced has been illustrated, but may be unevenly spaced. Further, in the rectifying members 13 arranged in a line, the gap W2 between the adjacent rectifying members 13 is illustrated as being equal, but this need not be the case.

  The number of rectifying members 13 constituting one row is not limited to the illustrated number, and may be any number. Further, the number of rectifying members 13 may be different between the first flow path header 5d and the second flow path header 5e.

  DESCRIPTION OF SYMBOLS 1 Electric equipment, 2 Housing | casing, 3 1st lid | cover, 4th lid | cover, 5 flow path, 5a 1st cooling flow path, 5b 2nd cooling flow path, 5c 3rd cooling flow path, 5d 1st 1 flow path header, 5e second flow path header, 5f first intermediate flow path header, 5g second intermediate flow path header, 6 circuit board, 7a first heat generating component, 7b second heat generating component, 7c 3rd heat generating component, 8 electrical component, 9 partition, 9a 1st component contact surface, 9b 2nd component contact surface, 9c 3rd component contact surface, 10a supply pipe, 10b discharge pipe, 11a supply side protrusion Part, 11b discharge side projection part, 12 cooling fin, 13 flow regulating member, 14 flow direction, 15 turn-up part.

The electrical device according to the present invention includes a housing having a partition wall contacting the first heat generating component and the second heat generating component having different heights, and the first heat generating component through the partition wall by covering the opening of the housing. And a lid that forms a flow path through which a refrigerant for cooling the second heat generating component flows, and the partition wall is in contact with the first heat generating component and the second heat generating component, and the first heat generating component and A step shape is formed in accordance with each height of the second heat generating component, and the flow path formed by the partition wall and the lid includes a first cooling flow channel positioned opposite to the first heat generating component, A second cooling channel positioned opposite to the two heat generating components, a first intermediate channel header connecting the first cooling channel and the second cooling channel, and a lid, fit the stepped shape of the partition wall so that the respective heights of the first cooling channel and the second cooling channel is identical Te in which has a stepped shape.

In this way, the second lid 4 has a step shape in accordance with the step shape of the partition wall 9 so that the first cooling flow path 5a and the second cooling flow path 5b have the same height. Yes.

The partition wall is configured to have a step shape in accordance with the height of each of the first heat generating component and the second heat generating component so as to come into contact with the first heat generating component and the second heat generating component. The flow path formed by the partition wall and the lid includes a first cooling flow path, a second cooling flow path, and a first intermediate connecting the first cooling flow path and the second cooling flow path. A flow path header is formed. The lid is configured to have a step shape in accordance with the step shape of the partition so that the first cooling channel and the second cooling channel have the same height.

The flow path 5 includes a first cooling flow path 5a, a second cooling flow path 5b, a first intermediate flow path header 5f, a first flow path header 5d, and a second flow path header 5e. In addition to the above, the third cooling flow path 5c located opposite to the third heat generating component 7c, and the second intermediate flow connecting the second cooling flow path 5b and the third cooling flow path 5c. A road header 5g is further formed.

That is, the partition walls are at the respective heights of the first heat generating component, the second heat generating component, and the third heat generating component so as to come into contact with the first heat generating component, the second heat generating component, and the third heat generating component. It is comprised so that it may become a step shape in total. In addition to the first cooling channel , the second cooling channel, and the first intermediate channel header, the channel formed by the partition wall and the lid includes the third cooling channel and the second cooling channel. A second intermediate flow path header that connects the flow path and the third cooling flow path is further formed. The lid is configured to have a step shape in accordance with the step shape of the partition wall so that the heights of the first cooling channel , the second cooling channel, and the third cooling channel are the same. Yes.

As can be seen from FIGS. 23 to 25, at least one of the first intermediate flow path header 5f and the second intermediate flow path header 5g is a folded portion that makes the refrigerant flow direction different between the connected cooling flow paths. Can function as.

As described above, according to the fourth embodiment, with respect to the configuration of the first embodiment, the first intermediate flow path header is the folded portion that makes the refrigerant flow direction different between the connected cooling flow paths. Is configured to function as Further, with respect to the configuration of the second embodiment, at least one of the first intermediate flow path header and the second intermediate flow path header is configured so that the refrigerant flows in different directions between the connected cooling flow paths. It is comprised so that it may function as a folding | returning part.

Claims (9)

A housing having a partition wall in contact with the first heat generating component and the second heat generating component having different heights;
A lid that forms a flow path through which a coolant for cooling the first heat generating component and the second heat generating component passes through the partition wall by covering the opening of the housing;
With
The partition wall has a stepped shape according to the height of each of the first heat generating component and the second heat generating component so as to come into contact with the first heat generating component and the second heat generating component,
The flow path formed by the partition wall and the lid has a first cooling flow path positioned opposite to the first heat-generating component and a second position positioned opposite to the second heat-generating component. And a first intermediate flow path header that connects the first cooling flow path and the second cooling flow path,
The electric device, wherein the lid has a step shape in accordance with the step shape of the partition so that the first cooling water channel and the second cooling water channel have the same height. The partition further contacts the third heat generating component;
The lid covers the opening of the housing, and the refrigerant for cooling the first heat generating component, the second heat generating component, and the third heat generating component flows through the partition. Forming a flow path,
The partition includes the first heat generating component, the second heat generating component, and the third heat generating component so as to be in contact with the first heat generating component, the second heat generating component, and the third heat generating component. According to each height, it becomes a step shape,
The flow path includes a third cooling water channel that faces the third heat-generating component, a second intermediate flow path header that connects the second cooling water channel and the third cooling water channel, and Is further formed,
The lid has a stepped shape in accordance with the stepped shape of the partition so that the first cooling water channel, the second cooling water channel, and the third cooling water channel have the same height. Item 2. The electric device according to Item 1. The electric device according to claim 1, wherein a plurality of cooling fins are provided in each of the first cooling water channel and the second cooling water channel formed in the flow channel. The electric device according to claim 2, wherein a plurality of cooling fins are provided in each of the first cooling water channel, the second cooling water channel, and the third cooling water channel formed in the flow channel. The flow path includes a first flow path header connected to a supply pipe that supplies the refrigerant to the flow path, and a second flow path header connected to a discharge pipe that discharges the refrigerant from the flow path. And further formed,
Each of the first flow path header and the second flow path header is provided with a plurality of rectifying members that suppress the drift of the refrigerant flowing between the cooling fins adjacent to the plurality of cooling fins. Item 5. The electric device according to Item 3 or 4. The electric device according to any one of claims 1 to 5, wherein a step portion provided in the partition wall and a step portion provided in the lid are respectively inclined. The shape of the corner part of the step surface of the step part provided in the said partition and the shape of the corner part of the step surface of the step part provided in the said lid are curved surfaces. Electrical equipment as described in. The electric device according to claim 1, wherein the first intermediate flow path header functions as a folded portion that makes a flow direction of the refrigerant different between connected cooling water paths. 5. The at least one of the first intermediate flow path header and the second intermediate flow path header functions as a folded portion that makes a flow direction of the refrigerant different between connected cooling water channels. Electrical equipment.

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