Electric compressor

Abstract

To provide an electric compressor in which the condition of a heat generation component on the side of a back surface of a board can be visually recognized after soldering.SOLUTION: An electric compressor 1, 1a, or 1b comprises a board 30, a case 12 to which the board 30 is attached, and a cover 11 fixed to the case 12 so as to cover the board 30. The cover 11 comprises a top wall 111 serving as a top plate covering the board 30, and a first side wall 112 formed integrally with the top wall 111 so as to rise on the side of the case 12 with respect to the top wall 111. The case 12 comprises a partition wall 121 serving as a bottom part when the board 30 is attached, and a second side wall 122 formed integrally with the partition wall 121 so as to rise on the side of the cover 11 with respect to the partition wall 121, and connected to the first side wall 112. The length from the top wall 111 to a tip of the first side wall 112 is longer than the length from the top wall 111 to the board 30. The length from the partition wall 121 to a tip of the second side wall 122 is shorter than the length from the partition wall 121 to the board 30.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to an electric compressor. [Background technology]

[0002] Conventional Patent Document 1 discloses an electric compressor having a control board attached to a shell member having an inverter circuit accommodating space constituted by a partition wall, a peripheral wall portion extending forward from the partition wall, and the aforementioned cover member closing the open end of the peripheral wall portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2019 / 117227 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, when soldering electronic components to a control board, the heat-generating components mounted on the control board are fixed to a shell member, the leads of the heat-generating components are connected to the control board, and then the leads are soldered to the control board. In this case, in conventional electric compressors, the control board with the heat-generating components soldered to it is housed in the inverter circuit housing space, and therefore, due to the peripheral wall, the condition of the heat-generating components on the back side of the control board, which is the partition wall side, after soldering is not visible.

[0005] Therefore, an object of the present disclosure is to provide an electric compressor that allows the condition of the back side of the board in the heat-generating component after soldering to be visually confirmed. [Means for solving the problem]

[0006] An electric compressor according to one aspect of the present disclosure comprises a substrate, a case to which the substrate is attached, and a cover fixed to the case to cover the substrate attached to the case, wherein the cover has a top wall that serves as a top plate covering the substrate, and a first side wall formed integrally with the top wall so as to rise toward the case relative to the top wall, and the case has a partition wall that serves as a bottom when the substrate is attached, and a second side wall formed integrally with the partition wall so as to rise toward the cover relative to the partition wall and connected to the first side wall, wherein the length from the top wall to the tip of the first side wall is longer than the length from the top wall to the substrate, and the length from the partition wall to the tip of the second side wall is shorter than the length from the partition wall to the substrate. [Effects of the Invention]

[0007] According to the electric compressor of the present disclosure, the condition of the rear surface side of the substrate in the heat-generating component after soldering can be visually confirmed. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an electric compressor according to an embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing a control chamber of the electric compressor according to the embodiment. [Figure 3] FIG. 3 is a cross-sectional view showing a control chamber of an electric compressor using a cover having a recessed first mounting and fixing surface and a case having a recessed second mounting and fixing surface. [Figure 4] FIG. 4 is a cross-sectional view showing a control chamber of an electric compressor in which a heat-generating component housing portion is formed. [Figure 5] FIG. 5 is a cross-sectional view showing a control chamber of an electric compressor using a case that does not have a second side wall. [Figure 6] FIG. 6 is a cross-sectional view showing a control chamber of the electric compressor connected by the flange portion of the cover and the case. [Figure 7] FIG. 7 is a cross-sectional view showing a control chamber of an electric compressor in which a heat-generating component housing portion is formed. DETAILED DESCRIPTION OF THE INVENTION

[0009] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, components, arrangement positions and connection forms of the components, etc. shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components that are not recited in the independent claims are described as optional components.

[0010] Furthermore, each figure is a schematic diagram and is not necessarily an exact illustration. Therefore, for example, the scales of the figures do not necessarily match. Furthermore, in each figure, substantially the same components are given the same reference numerals, and redundant explanations are omitted or simplified.

[0011] Furthermore, in the following embodiments, expressions such as cylindrical, vertical, and approximately parallel are used. For example, cylindrical, vertical, and approximately parallel do not only mean a completely cylindrical body, a completely vertical direction, and a completely parallel body, but also mean a substantially cylindrical body, a substantially vertical direction, and a substantially parallel body, i.e., including an error of, for example, a few percent. Furthermore, cylindrical, vertical, and approximately parallel mean cylindrical, vertical, and approximately parallel to the extent that the effects of the present disclosure can be achieved. The same applies to other expressions using "shape," "direction," and "approximately."

[0012] Hereinafter, the embodiments will be specifically described with reference to the drawings.

[0013] (Embodiment) <Configuration> First, the configuration of an electric compressor 1 according to the present embodiment will be described with reference to Figures 1 and 2. Figure 1 is a diagram showing the electric compressor 1 according to the embodiment. Figure 2 is a cross-sectional view showing a control chamber K of the electric compressor 1 according to the embodiment.

[0014] As shown in Fig. 1, the electric compressor 1 is a compressor used in an air conditioning system or the like. The electric compressor 1 of this embodiment is a scroll compressor, a vane compressor, or the like. However, the electric compressor 1 may also be any other known compressor.

[0015] The electric compressor 1 compresses the refrigerant introduced through the intake port by driving the compression section 50 with the driving force of the built-in electric motor 40, and discharges the compressed refrigerant to the outside through the discharge port. Refrigerant that has passed through an evaporator (not shown) is introduced through the intake port. The electric compressor 1 is connected via a condenser, an expansion valve, and an evaporator (not shown) to form a compression refrigeration cycle. This compression refrigeration cycle is used, for example, as an air conditioning system for cooling or heating the interior of a vehicle.

[0016] As shown in FIGS. 1 and 2, the electric compressor 1 includes a housing 3, a sealing member 21, a control unit, an electric motor 40, and a compression unit 50.

[0017] The housing 3 is made of a metal material such as aluminum, iron, or copper, and is cylindrical along an axis A. The housing 3 defines, in its internal space, a control chamber K that houses the control unit, a motor chamber that houses the electric motor 40, and a compression chamber that houses the compression unit 50. The control chamber K and the motor chamber are separated by a partition wall 121 that constitutes a part of the housing 3.

[0018] The housing 3 is divided into a first housing 10a that defines a control chamber K and a second housing 10b that defines a motor chamber and a compression chamber.

[0019] The first housing 10 a includes a cover 11 and a case 12 .

[0020] The cover 11 is fixed to the case 12 by fixing parts 90 such as bolts so as to cover the control unit attached to the case 12. The cover 11 overlaps with the case 12 to form a control chamber K. The cover 11 is a flat metal lid, and has the same shape as the area around the control chamber K of the case 12.

[0021] The cover 11 has a metal top wall 111 that serves as a top plate covering the control unit, and a metal first side wall 112 that is connected to the top wall 111 and is formed integrally with the top wall 111 so as to rise toward the case 12 relative to the top wall 111.

[0022] The first side wall 112 is formed with an annular first mounting and fixing surface 112a on which the sealing member 21 is placed when the cover 11 is fixed to the case 12. The first mounting and fixing surface 112a is recessed in a direction away from the tip of the first side wall 112 so that the sealing member 21 is sandwiched between the first side wall 112 and the second side wall 122. The first mounting and fixing surface 112a is substantially flat to improve sealing performance.

[0023] Furthermore, a plurality of through holes 118 through which a plurality of fixing portions 90 penetrating the first mounting and fixing surface 112a are inserted are formed in the first side wall 112. Each through hole 118 corresponds one-to-one to each of the connecting holes 128 formed in the second side wall 122 of the case 12.

[0024] The length from the top wall 111 to the tip of the first side wall 112 is set to be longer than the length from the top wall 111 to the substrate 30. Therefore, when the cover 11 is connected to the case 12, the cover 11 can cover the control unit.

[0025] The case 12 faces the cover 11 via the sealing member 21 and is disposed in a position substantially parallel to the top wall 111 of the cover 11.

[0026] The portion of the case 12 that constitutes the control chamber K is a flat metal container, and a board 30 that constitutes part of the control unit is attached to it.

[0027] Case 12 has a metal partition wall 121 that serves as the bottom when substrate 30 is attached, and a metal second side wall 122 that is formed integrally with partition wall 121 so as to rise toward cover 11 relative to partition wall 121 and is connected to first side wall 112. In this embodiment, being formed integrally means that the objects cannot be separated without being destroyed.

[0028] A connecting portion 123 for attaching the substrate 30 is formed on the partition wall 121. The substrate 30 on which a heat-generating component 31, which is a component with leads, is mounted is attached to the connecting portion 123. Mounting means that the lead portion of the heat-generating component 31 is electrically connected (joined) to the substrate 30 by solder so that the heat-generating component 31 operates.

[0029] The length from the partition wall 121 to the tip of the second side wall 122 is set to be shorter than the length from the partition wall 121 to the substrate 30. Therefore, the height of the substrate 30 attached to the connecting portion 123 of the partition wall 121 is higher than the height of the second side wall 122. This makes it possible to view the back surface of the substrate 30 on the side of the partition wall 121 through the gap between the tip of the second side wall 122 and the substrate 30. This gap should be at least several millimeters.

[0030] The partition wall 121 is provided with a drive connector for the control unit to supply power to the electric motor 40, and a power supply connector for supplying power to the control unit from an external power supply device such as a battery mounted on a vehicle or the like.

[0031] The second side wall 122 has an annular second mounting and fixing surface 122a formed on the surface facing the cover 11 when the cover 11 is fixed to the case 12. The second mounting and fixing surface 122a is recessed in a direction away from the tip of the second side wall 122 so that the sealing member 21 is sandwiched between the second side wall 122 and the first side wall 112. The second mounting and fixing surface 122a is substantially flat to improve sealing performance.

[0032] Furthermore, a plurality of connecting holes 128 into which a plurality of fixing portions 90 penetrating the second mounting and fixing surface 122a are inserted are formed in the second side wall 122. Each of the fixing portions 90 engages with each of the connecting holes 128.

[0033] The sealing member 21 is a gasket that is sandwiched between the first side wall 112 of the cover 11 and the second side wall 122 of the case 12, and seals the gap between the first side wall 112 and the second side wall 122. Specifically, the sealing member 21 is sandwiched between an annular first mounting and fixing surface 112a formed on the cover 11 and an annular second mounting and fixing surface 122a formed on the case 12, and is disposed along the first mounting and fixing surface 112a and the second mounting and fixing surface 122a.

[0034] The cover 11 and the case 12 are fixed together by a plurality of fixing parts 90 such as bolts, and therefore the sealing member 21 is tightly sandwiched between the cover 11 and the case 12. By tightly sandwiching the sealing member 21, the bead of the sealing member 21 is crushed, and the control chamber K formed by the cover 11 and the case 12 can be sealed to prevent liquid from entering.

[0035] The second housing 10b is a cylindrical body that houses the electric motor 40 and the compression unit 50. The second housing 10b also defines an electric chamber that houses the electric motor 40 and a compression chamber that houses the compression unit 50 in its internal space.

[0036] In addition, the second housing 10b is formed with a suction port for compressing the refrigerant and a discharge port for discharging the refrigerant compressed by the compression section 50.

[0037] The control unit is an inverter electrically connected to the electric motor 40 and controls the driving of the electric motor 40. The control unit is disposed in the control room K.

[0038] The control unit includes a substrate 30 and a plurality of heat-generating components 31.

[0039] The substrate 30 is fixed to a connecting portion 123 formed on the partition wall 121 of the case 12. The heat-generating component 31 is mounted on the substrate 30.

[0040] The substrate 30 is electrically connected to a drive connector and a power supply connector provided on the partition wall 121.

[0041] The heat-generating component 31 is mounted on one surface 30a of the substrate 30 facing the partition wall 121. The heat-generating component 31 is an electronic component mounted on the substrate 30, such as a switching element, a coil, or a capacitor, which constitutes a control circuit (inverter) for controlling the driving of the electric motor 40. For example, the heat-generating component 31 constitutes a three-phase inverter circuit.

[0042] The electric motor 40 is mechanically connected to the compression unit 50 and drives the compression unit 50. The electric motor 40 is, for example, a three-phase AC motor. The electric motor 40 is fixed to the drive shaft of the compression unit 50. A magnetic rotor of the electric motor 40 is fixed to the second housing 10b. The electric motor 40 also includes a stator around which a coil is wound. The electric motor 40 is electrically connected to a drive connector provided on the partition wall 121, and receives power from the circuit board 30.

[0043] The compression unit 50 is a compression mechanism of a scroll type, vane type, etc. that compresses the refrigerant. In the compression unit 50, the drive shaft of the electric motor 40 is rotated by the power supplied from the substrate 30, thereby compressing the refrigerant.

[0044] The configuration of the electric compressor 1 has been described above, but the electric compressor 1 may also have the following configuration.

[0045] FIG. 3 is a cross-sectional view showing a control chamber K of an electric compressor 1a that uses a cover 11 having a recessed first mounting and fixing surface 112b and a case 12 having a recessed second mounting and fixing surface 122b.

[0046] 3, the first mounting / fixing surface 112b may be recessed in a direction away from the tip of the first side wall 112 so as to sandwich the sealing member 21 between the first side wall 112 and the second side wall 122. Furthermore, the second mounting / fixing surface 122b may be recessed in a direction away from the tip of the second side wall 122 so as to sandwich the sealing member 21 between the first side wall 112 and the second side wall 122. In this embodiment, the first mounting / fixing surface 112b is formed in an annular shape along the outer peripheral edge at the tip of the first side wall 112. Furthermore, the second mounting / fixing surface 122b is formed in an annular shape along the outer peripheral edge at the tip of the second side wall 122. When the cover 11 and the case 12 are stacked, a first annular recess may be formed in the tip of the first side wall 112, and a second annular recess may be formed in the tip of the second side wall 122 so as to face the first recess, in order to position the sealing member 21 between the tip of the first side wall 112 and the tip of the second side wall 122. The sealing member 21 may be sandwiched between the first recess and the second recess. In this case, the bottom of the first recess corresponds to the first mounting / fixing surface 112b, and the bottom of the second recess corresponds to the second mounting / fixing surface 122b. The sealing member 21 is positioned between the first recess and the second recess, which are provided on the outer periphery of the tip of the first side wall 112 and the tip of the second side wall 122, respectively, outside the fixing portion 90.

[0047] FIG. 4 is a cross-sectional view showing the control chamber K of the electric compressor 1b in which the heat-generating component housing portion 124 is formed.

[0048] As shown in FIG. 4 , the leads of the heat-generating component 31 are soldered to the substrate 30 while penetrating the substrate 30. Because the heat-generating component 31 is a component with leads, a tall heat-generating component 31 may be soldered to the substrate 30. The tall heat-generating component 31 is taller from the surface 30a of the substrate 30 facing the partition wall 121 than other components with leads mounted on the substrate 30. Therefore, to prevent the lead-equipped components from interfering with the partition wall 121, the partition wall 121 may be formed with a heat-generating component housing 124 that is recessed away from the top wall 111 and that houses the heat-generating component 31. The heat-generating component housing 124 is a recess that prevents contact with the heat-generating component 31. When the heat-generating component housing 124 is formed, the side of the partition wall 121 facing the motor chamber where the electric motor 40 is disposed protrudes toward the electric motor 40. In this case, the heat generating component housing portion 124 of the partition wall 121 can be cooled by the refrigerant flowing through the motor chamber, so that the temperature rise of the heat generating component housing portion 124 can be suppressed.

[0049] FIG. 5 is a cross-sectional view showing the control chamber K of the electric compressor 1c using the case 12 that does not have the second side wall 122.

[0050] As shown in FIG. 5, the case 12 may be made of a partition wall 121 that is the bottom when the substrate 30 is attached and that is connected to the first side wall 112. In this case, the case 12 may not have the second side wall 122 described above. In this case, the portion of the partition wall 121 that is connected to the first side wall 112 may have a third mounting and fixing surface 122c that is recessed in a direction away from the cover 11 in order to position the sealing member 21. In other words, the third mounting and fixing surface 122c is the bottom surface of a recess that is recessed from the surface of the partition wall 121 in order to position the sealing member 21. The third mounting and fixing surface 122c is formed along the edge portion of the partition wall 121.

[0051] In this case, a sealing member 21 is disposed between the first side wall 112 and the case 12. The first side wall 112 is formed with a first mounting and fixing surface 112a that is recessed in a direction away from the partition wall 121 so that the sealing member 21 is disposed so as to be sandwiched between the first side wall 112 and the case 12. The sealing member 21 is sandwiched between the first side wall 112 of the cover 11 and the case 12, and seals the gap between the first mounting and fixing surface 112a of the first side wall 112 and the third mounting and fixing surface 122c of the case 12.

[0052] Furthermore, the cover 11 is fixed to the case 12 by fixing parts 90 that penetrate the first mounting and fixing surface 112a and the third mounting and fixing surface 122c. In other words, the fixing parts 90 can fasten the cover 11 and the case 12 together so that the sealing member 21 is firmly sandwiched between the first mounting and fixing surface 112a and the third mounting and fixing surface 122c.

[0053] FIG. 6 is a cross-sectional view showing the control chamber K of the electric compressor 1d connected to the flange portion 125 of the cover 11 and the case 12. As shown in FIG.

[0054] 6, a flange portion 125 is formed on the outer periphery of the cover 11, constituting part of the first side wall 112 and extending radially outward from the tip of the first side wall 112. A first mounting and fixing surface 112d is formed at the tip of the first side wall 112 facing the partition wall 121. A third mounting and fixing surface 122d is formed at the portion of the partition wall 121 connected to the first side wall 112, recessed in a direction away from the cover 11 to position the sealing member 21.

[0055] In this case, a sealing member 21 is disposed between the cover 11 and the case 12. The cover 11 is fixed to the case 12 by a fixing portion 90 that penetrates the first mounting and fixing surface 112d and the third mounting and fixing surface 122d. In other words, the fixing portion 90 can fasten the cover 11 and the case 12 together so that the sealing member 21 is firmly sandwiched between the first mounting and fixing surface 112d and the third mounting and fixing surface 122d.

[0056] FIG. 7 is a cross-sectional view showing the control chamber K of the electric compressor 1e in which the heat-generating component housing portion 124 is formed.

[0057] 7, the leads of the heat-generating component 31 are soldered to the substrate 30 while penetrating the substrate 30. The tall heat-generating component 31 is taller from the surface 30a of the substrate 30 facing the partition wall 121 than the other components with leads mounted on the substrate 30. Therefore, to prevent the lead-equipped components from interfering with the partition wall 121, the partition wall 121 may be formed with a heat-generating component housing portion 124 that is recessed away from the top wall 111 and that houses the heat-generating component 31.

[0058] The configurations of FIGS. 3 to 6 may be combined as appropriate.

[0059] For example, as shown in FIG. 3, a configuration in which the first mounting and fixing surface 112b is recessed in a direction away from the tip of the first side wall 112 and the second mounting and fixing surface 122b is recessed in a direction away from the tip of the second side wall 122 may be applied to the electric compressors 1b, 1c, and 1d in FIGS. 4 to 6.

[0060] 4, the partition wall 121 having the heat generating component housing portion 124 formed therein may be applied to the electric compressor 1d of FIG.

[0061] <Action and effect> Next, the effects of the electric compressors 1, 1a, 1b, 1c, 1d, and 1e according to the present embodiment will be described.

[0062] As described above, the electric compressors 1, 1a, and 1b of technology 1 in this embodiment include a substrate 30, a case 12 to which the substrate 30 is attached, and a cover 11 fixed to the case 12 so as to cover the substrate 30 attached to the case 12. The cover 11 has a top wall 111 that serves as a top plate covering the substrate 30, and a first side wall 112 that is formed integrally with the top wall 111 and rises toward the case 12 relative to the top wall 111. The case 12 has a partition wall 121 that serves as a bottom when the substrate 30 is attached, and a second side wall 122 that is formed integrally with the partition wall 121 and rises toward the cover 11 relative to the partition wall 121, and is connected to the first side wall 112. The length from the top wall 111 to the tip of the first side wall 112 is longer than the length from the top wall 111 to the substrate 30, and the length from the partition wall 121 to the tip of the second side wall 122 is shorter than the length from the partition wall 121 to the substrate 30.

[0063] According to this, when the second side wall 122 and the substrate 30 are viewed from the side, the height of the second side wall 122 is lower than the position where the substrate 30 is disposed, so that a gap can be formed between the tip of the second side wall 122 and the substrate 30. Therefore, the partition wall 121 side (rear side) of the substrate 30 can be seen as if looking up at the substrate 30 from the case 12.

[0064] Therefore, according to the present disclosure, it is possible to visually check the condition of the rear surface of the substrate 30 in the heat-generating component 31 after soldering. Furthermore, even if a foreign object gets between the case 12 and the substrate 30, the position of the foreign object can be recognized, making it easier to remove the foreign object.

[0065] Furthermore, the electric compressors 1, 1a, 1b of Technology 2 in this embodiment are electric compressors 1, 1a, 1b described in Technology 1, in which a sealing member 21 is arranged between the first side wall 112 and the second side wall 122, first mounting and fixing surfaces 112a, 112b are formed on the first side wall 112, second mounting and fixing surfaces 122a, 122b are formed on the second side wall 122, the sealing member 21 is arranged so as to be sandwiched between the first mounting and fixing surfaces 112a, 112b and the second mounting and fixing surfaces 122a, 122b, and the cover 11 is fixed to the case 12 by fixing portions 90 that penetrate the first mounting and fixing surfaces 112a, 112b and the second mounting and fixing surfaces 122a, 122b.

[0066] This allows the sealing member 21 to be disposed between the first side wall 112 and the second side wall 122, and the bead of the sealing member 21 to be crushed and sandwiched between the first mounting and fixing surfaces 112a, 112b and the second mounting and fixing surfaces 122a, 122b. This improves the sealing performance between the first mounting and fixing surfaces 112a, 112b and the second mounting and fixing surfaces 122a, 122b.

[0067] In particular, when the second side wall 122 and the first side wall 112 are connected by the fastening portion 90, the fastening portion 90 can be fastened to the second side wall 122 deep into the connecting hole 128 of the second side wall 122, ensuring a constant fastening force between the second side wall 122 and the first side wall 112. This prevents a decrease in the rigidity of the case and an increase in the number of fastening portions used to ensure a seal between the case and the cover. This ensures the rigidity of the case 12 and the cover 11, and prevents an increase in the number of fastening portions 90 used.

[0068] Furthermore, in the electric compressor 1a of Technology 3 in this embodiment, the first mounting and fixing surface 112b is the electric compressor 1a described in Technology 2, which is recessed in a direction away from the tip of the first side wall 112 so as to sandwich the sealing member 21 between the first mounting and fixing surface 112b and the second mounting and fixing surface 122b.

[0069] This allows the sealing member 21 to be easily assembled to the first mounting and fixing surface 112b that is recessed in a direction away from the tip of the first side wall 112. In addition, since the first side wall 112 and the second side wall 122 are disposed on the inner peripheral side of the sealing member 21, a certain level of rigidity can be ensured in the electric compressor 1a.

[0070] Furthermore, in the electric compressor 1a of Technology 4 in this embodiment, the second mounting and fixing surface 122b is the electric compressor 1a described in Technology 2 or 3, which is recessed in a direction away from the tip of the second side wall 122 so as to sandwich the sealing member 21 between the second mounting and fixing surface 122b and the first mounting and fixing surface 112b.

[0071] This allows the sealing member 21 to be easily assembled to the second mounting and fixing surface 122b that is recessed in a direction away from the tip of the second side wall 122. In addition, since the first side wall 112 and the second side wall 122 are disposed on the inner peripheral side of the sealing member 21, a certain level of rigidity can be ensured in the electric compressor 1a.

[0072] Furthermore, in the electric compressor 1b of technology 5 in this embodiment, a heat-generating component 31 is mounted on one surface 30a of the substrate 30 facing the partition wall 121, and the partition wall 121 is formed with a heat-generating component accommodating section 124 that is recessed in a direction away from the top wall 111 and accommodates the heat-generating component 31, which is the electric compressor 1b described in any one of technologies 1 to 4.

[0073] According to this, since the heat-generating component accommodating section 124 is formed in the partition wall 121, a tall heat-generating component 31 can be accommodated in the control chamber K, and the rigidity of the partition wall 121 can be increased compared to when the partition wall 121 is flat.

[0074] In addition, the electric compressor 1b of the sixth aspect of the present embodiment is the electric compressor 1b of the fifth aspect, in which the heat-generating component accommodating portion 124 protrudes to the side of the partition wall 121 opposite to the cover 11 side.

[0075] As a result, the heat-generating component accommodating section 124 protrudes toward the motor chamber side in which the electric motor 40 is disposed in the partition wall 121. In this case, the refrigerant flowing through the motor chamber can cool the heat-generating component accommodating section 124 of the partition wall 121, thereby suppressing a temperature rise in the heat-generating component accommodating section 124.

[0076] Furthermore, in the electric compressor 1b of Technology 7 in this embodiment, the heat-generating component 31 is a component with leads, and is an electric compressor 1b described in Technology 5 or 6, which has a higher height from one surface 30a of the substrate 30 facing the partition wall 121 than other lead-equipped components mounted on the substrate 30.

[0077] This allows the substrate 30 to be attached to the partition wall 121 in a state where the heat generating component 31 is mounted on the substrate 30 so that the heat generating component 31 does not interfere with the partition wall 121 even if the heat generating component 31 is tall.

[0078] Furthermore, in the electric compressor 1b of technology 8 in this embodiment, the lead portion of the heat-generating component 31 is the electric compressor 1b described in any one of technologies 5 to 7, in which the lead portion penetrates the substrate 30 and is joined to the substrate 30 by soldering.

[0079] This makes it possible to visually confirm that the lead portions of the heat-generating component 31 are joined by solder on the partition wall 121 side of the substrate 30, even if the heat-generating component 31 is mounted on the partition wall 121 side of the substrate 30.

[0080] Furthermore, the electric compressors 1c, 1d, and 1e of technology 9 in this embodiment comprise a substrate 30, a case 12 to which the substrate 30 is attached, and a cover 11 fixed to the case 12 so as to cover the substrate 30 attached to the case 12, and the cover 11 has a top wall 111 which serves as a top plate covering the substrate 30, and a first side wall 112 which is formed integrally with the top wall 111 so as to rise toward the case 12 relative to the top wall 111, and the case 12 forms the bottom when the substrate 30 is attached and comprises a partition wall 121 connected to the first side wall 112, and third mounting and fixing surfaces 122c and 122d are formed in the part of the partition wall 121 connected to the first side wall 112, which are set back in a direction away from the cover 11 to position the sealing member 21.

[0081] According to this, when the substrate 30 is viewed from the side, the height of the edge of the partition wall 121 is lower than the position where the substrate 30 is arranged, and therefore a gap is formed between the partition wall 121 and the substrate 30. Therefore, the partition wall 121 side (rear side) of the substrate 30 can be seen as if looking up at the substrate 30 from the case 12.

[0082] Therefore, according to the present disclosure, it is possible to visually check the condition of the rear surface of the substrate 30 in the heat-generating component 31 after soldering. Furthermore, even if a foreign object gets between the case 12 and the substrate 30, the position of the foreign object can be recognized, making it easier to remove the foreign object.

[0083] Furthermore, in the electric compressors 1c, 1d, and 1e of Technology 10 in this embodiment, the first side wall 112 is formed with first mounting and fixing surfaces 112a and 112d that are recessed away from the partition wall 121 so as to sandwich the sealing member 21 between the first side wall 112 and the third mounting and fixing surfaces 122c and 122d, and the cover 11 is fixed to the case 12 by fixing portions 90 that penetrate the first mounting and fixing surfaces 112a and 112d and the third mounting and fixing surfaces 122c and 122d, thereby forming electric compressors 1c, 1d, and 1e described in Technology 9.

[0084] This allows the sealing member 21 to be disposed between the first side wall 112 and the case 12, and the fixing portion 90 to sandwich the bead of the sealing member 21 between the first mounting and fixing surfaces 112a, 112d and the third mounting and fixing surfaces 122c, 122d so as to crush the bead. This improves the sealing performance between the first mounting and fixing surfaces 112a, 112d and the third mounting and fixing surfaces 122c, 122d.

[0085] Furthermore, in the electric compressor 1d of technology 11 in this embodiment, the first side wall 112 is formed with a flange portion 125 extending radially outward from the tip portion of the first side wall 112, and the flange portion 125 is formed with a first mounting and fixing surface 112d for positioning the sealing member 21 so as to sandwich it together with the third mounting and fixing surface 122d, and the cover 11 is fixed to the case 12 by a fixing portion 90 that penetrates the flange portion 125 and fastens to the case 12, which is the electric compressor 1d described in technology 9 or 10.

[0086] According to this, the fixing portion 90 penetrates the flange portion 125 and is fastened to the case 12, so that the fixing portion 90 can be prevented from becoming long.

[0087] Furthermore, the sealing member 21 can be disposed between the first side wall 112 and the case 12, and the fixing portion 90 can sandwich the sealing member 21 between the first mounting and fixing surface 112d and the third mounting and fixing surface 122d so as to crush the bead of the sealing member 21.

[0088] This makes it possible to prevent the fixing portion 90 from becoming too long and to achieve a good seal between the first mounting and fixing surface 112d and the third mounting and fixing surface 122d.

[0089] Furthermore, in the electric compressor 1e of Technology 12 in this embodiment, a heat-generating component 31 is mounted on one surface 30a of the substrate 30 facing the partition wall 121, and the partition wall 121 is formed with a heat-generating component accommodating section 124 that is recessed in a direction away from the top wall 111 and accommodates the heat-generating component 31, which is an electric compressor 1e described in any one of Technologies 9 to 11.

[0090] According to this, since the heat-generating component accommodating section 124 is formed in the partition wall 121, a tall heat-generating component 31 can be accommodated in the control chamber K, and the rigidity of the partition wall 121 can be increased compared to when the partition wall 121 is flat.

[0091] Furthermore, if the rigidity of case 12 decreases, the number of fixing parts 90 used to ensure the sealing performance between case 12 and cover 11 increases. However, in the present embodiment, by increasing the rigidity of partition wall 121, it is possible to suppress an increase in the number of fixing parts 90 used.

[0092] In addition, the electric compressor 1e of the thirteenth aspect of the present embodiment is the electric compressor 1e of the twelfth aspect, in which the heat-generating component accommodating portion 124 protrudes from the partition wall 121 on the side opposite to the cover 11 side.

[0093] As a result, the heat-generating component accommodating section 124 protrudes toward the motor chamber side in which the electric motor 40 is disposed in the partition wall 121. In this case, the refrigerant flowing through the motor chamber can cool the heat-generating component accommodating section 124 of the partition wall 121, thereby suppressing a temperature rise in the heat-generating component accommodating section 124.

[0094] Furthermore, in the electric compressors 1c, 1d, and 1e of Technology 14 in this embodiment, the heat-generating component 31 is a component with leads, and is an electric compressor 1c, 1d, or 1e described in Technology 12 or 13, which has a height from one surface 30a of the substrate 30 facing the partition wall 121 greater than that of other lead-equipped components mounted on the substrate 30.

[0095] This allows the substrate 30 to be attached to the partition wall 121 in a state where the heat generating component 31 is mounted on the substrate 30 so that the heat generating component 31 does not interfere with the partition wall 121 even if the heat generating component 31 is tall.

[0096] Furthermore, in the electric compressors 1c, 1d, and 1e of technology 15 in this embodiment, the lead portion of the heat-generating component 31 is soldered to the substrate 30 while penetrating the substrate 30, which is the electric compressor 1c, 1d, and 1e described in any one of technologies 12 to 14.

[0097] This makes it possible to visually confirm that the lead portions of the heat-generating component 31 are joined by solder on the partition wall 121 side of the substrate 30, even if the heat-generating component 31 is mounted on the partition wall 121 side of the substrate 30.

[0098] (Other variations) While the electric compressor according to the present disclosure has been described above based on the above-mentioned embodiments, the present disclosure is not limited to these embodiments. As long as the modifications do not deviate from the spirit of the present disclosure, modifications that would occur to those skilled in the art may also be included within the scope of the present disclosure.

[0099] In addition, this disclosure also includes forms obtained by making various modifications to the above-mentioned embodiments that a person skilled in the art would think of, and forms realized by arbitrarily combining the components and functions of each embodiment within the scope of this disclosure. [Industrial Applicability]

[0100] The electric compressor of the present disclosure can be applied as a compressor used in an air conditioning system of a vehicle such as an automobile. [Explanation of symbols]

[0101] 1, 1a, 1b, 1c, 1d, 1e Electric compressor 11 Cover 12 cases 21 Sealing member 30 boards 30a one side 31 Heat-generating parts 90 Fixed part 111 Ceiling wall 112 First side wall 112a, 112b, 112d First mounting and fixing surface 121 Bulkhead 122 Second side wall 122c, 122d Third mounting surface 122a, 122b Second mounting and fixing surface 124 Heat-generating component housing 125 flange K control room

Claims

1. A substrate; a case to which the substrate is attached; a cover fixed to the case so as to cover the substrate attached to the case, the cover has a top wall that serves as a top plate that covers the board, and a first side wall that is formed integrally with the top wall and rises toward the case relative to the top wall, the case has a partition wall that serves as a bottom when the board is attached, and a second side wall that is formed integrally with the partition wall so as to rise toward the cover and is connected to the first side wall, a length from the top wall to a tip of the first side wall is longer than a length from the top wall to the substrate; The length from the partition wall to the tip of the second side wall is shorter than the length from the partition wall to the substrate. Electric compressor.

2. a sealing member is disposed between the first side wall and the second side wall; The first side wall is formed with a first mounting and fixing surface, The second side wall is formed with a second mounting and fixing surface, the sealing member is disposed so as to be sandwiched between the first mounting and fixing surface and the second mounting and fixing surface, The cover is fixed to the case by a fixing portion that penetrates the first fixing surface and the second fixing surface. The electric compressor according to claim 1 .

3. The first mounting and fixing surface is recessed in a direction away from the tip of the first side wall so as to sandwich the sealing member between the first mounting and fixing surface and the second mounting and fixing surface. The electric compressor according to claim 2 .

4. The second mounting and fixing surface is recessed in a direction away from the tip of the second side wall so as to sandwich the sealing member between the first mounting and fixing surface. The electric compressor according to claim 2 or 3.

5. a heat-generating component is mounted on one surface of the substrate facing the partition wall; The partition wall is formed with a heat generating component accommodating portion that is recessed in a direction away from the top wall and that accommodates the heat generating component. The electric compressor according to any one of claims 1 to 3.

6. The heat generating component accommodating portion protrudes from the partition wall on the side opposite to the cover side. The electric compressor according to claim 5 .

7. The heat generating component is It is a leaded component, The height from the surface of the substrate facing the partition wall is higher than that of other leaded components mounted on the substrate. The electric compressor according to claim 5 .

8. The lead portion of the heat generating component is joined to the substrate by soldering while passing through the substrate. The electric compressor according to claim 5 .

9. A substrate; a case to which the substrate is attached; a cover fixed to the case so as to cover the substrate attached to the case, the cover has a top wall that serves as a top plate that covers the board, and a first side wall that is formed integrally with the top wall and rises toward the case relative to the top wall, the case includes a partition wall that serves as a bottom when the substrate is attached and is connected to the first side wall; A portion of the partition wall connected to the first side wall is formed with a third mounting and fixing surface that is recessed away from the cover for disposing a sealing member thereon. Electric compressor.

10. a first mounting / fixing surface recessed in a direction away from the partition wall is formed on the first side wall so as to sandwich the sealing member between the first mounting / fixing surface and the third mounting / fixing surface; The cover is fixed to the case by a fixing portion that penetrates the first fixing surface and the third fixing surface. The electric compressor according to claim 9.

11. The first side wall is formed with a flange portion extending radially outward from a tip end portion of the first side wall, a first mounting and fixing surface is formed on the flange portion to sandwich the sealing member between the first mounting and fixing surface and the third mounting and fixing surface; The cover is fixed to the case by a fixing portion that penetrates the first fixing surface and the third fixing surface. The electric compressor according to claim 9 or 10.

12. a heat-generating component is mounted on one surface of the substrate facing the partition wall, The partition wall is formed with a heat generating component accommodating portion that is recessed in a direction away from the top wall and that accommodates the heat generating component. The electric compressor according to claim 9 or 10.

13. The heat generating component accommodating portion protrudes from the partition wall on the side opposite to the cover side. The electric compressor according to claim 12.

14. The heat generating component is It is a leaded component, The height from the surface of the substrate facing the partition wall is higher than that of other leaded components mounted on the substrate. The electric compressor according to claim 12.

15. The lead portion of the heat generating component is joined to the substrate by soldering while passing through the substrate. The electric compressor according to claim 14.

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