Electric compressor

Abstract

To improve the reliability of electric compressors. [Solution] Refrigerant gas leaking from the motor chamber S1 into the second chamber 57 via the support plate seal material 44 accumulates in the second chamber 57. The refrigerant gas accumulated in the second chamber 57 is then discharged to the outside of the housing 11 through the outlet 73. Here, the second chamber 57 is isolated from the first chamber 56. The circuit board 27 is housed in the first chamber 56. Therefore, the problem of malfunction occurring in the electric compressor 10 due to the circuit board 27 being exposed to refrigerant gas while it is in operation is avoided.

Description

Technical Field

[0001] The present invention relates to an electric compressor.

Background Art

[0002] An electric compressor includes a compression part, a motor, an inverter, and a housing. The compression part compresses refrigerant gas. The motor drives the compression part. The inverter drives the motor. The housing partitions a motor chamber and an inverter chamber. The motor chamber houses the motor. Refrigerant gas is inhaled into the motor chamber. The inverter chamber houses the inverter. The housing has a partition wall. The partition wall separates the motor chamber and the inverter chamber.

[0003] For example, as in Patent Document 1, an electric compressor includes an airtight terminal. The airtight terminal seals the motor chamber and the inverter chamber. The airtight terminal electrically connects the motor and the inverter.

[0004] The inverter has a circuit board and connection terminals. The connection terminals connect the airtight terminal and the circuit board. A partition wall through-hole is formed in the partition wall. The partition wall through-hole penetrates the partition wall so as to open to the motor chamber and the inverter chamber respectively.

[0005] The airtight terminal has a conductive member, a support plate, and a support plate sealing material. The conductive member is inserted into the partition wall through-hole. The first end of the conductive member is connected to the motor in the motor chamber, and the second end is connected to the connection terminal in the inverter chamber. The support plate is provided in the motor chamber or the inverter chamber. The support plate supports the conductive member. The support plate is fixed to the partition wall. The support plate sealing material is provided between the support plate and the partition wall. The support plate sealing material seals to suppress the refrigerant gas in the motor chamber from leaking into the inverter chamber.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] International Publication No. 2024 / 190809 [Overview of the project] [Problems that the invention aims to solve]

[0007] In such electric compressors, refrigerant gas from the motor chamber may leak into the inverter chamber through the support plate seal. When refrigerant gas leaks into the inverter chamber, the circuit board may be exposed to the refrigerant gas. If the circuit board is exposed to the refrigerant gas while it is in operation, there is a risk of malfunction in the electric compressor. Consequently, the reliability of the electric compressor is reduced. [Means for solving the problem]

[0008] An electric compressor that solves the above problems comprises a compression section for compressing refrigerant gas, a motor for driving the compression section, an inverter for driving the motor, a housing that partitions the motor chamber, which houses the motor and from which refrigerant gas is drawn, and an inverter chamber, which houses the inverter, with a partition wall separating the motor chamber and the inverter chamber, and an airtight terminal that seals the motor chamber and the inverter chamber and electrically connects the motor and the inverter, the inverter having a circuit board and a connection terminal that connects the airtight terminal and the circuit board, the partition wall has a through-hole that penetrates through to open into the motor chamber and the inverter chamber respectively, the airtight terminal is inserted into the through-hole, and its first end is connected to the motor in the motor chamber. The electric compressor further comprises: a conductive member whose second end is connected to the connection terminal in the inverter chamber; a support plate provided in the motor chamber or the inverter chamber, supporting the conductive member and fixed to the partition wall; and a support plate sealing material provided between the support plate and the partition wall, sealing to prevent refrigerant gas in the motor chamber from leaking into the inverter chamber, wherein the inverter chamber is partitioned into a first chamber housing the circuit board and a second chamber isolated from the first chamber, where refrigerant gas leaking from the motor chamber through the support plate sealing material accumulates, and the housing has an outlet formed therein for discharging refrigerant gas in the second chamber to the outside of the housing.

[0009] According to this design, refrigerant gas leaking from the motor chamber into the second chamber via the support plate seal accumulates in the second chamber. The refrigerant gas accumulated in the second chamber is then discharged to the outside of the housing through the outlet. Here, the second chamber is isolated from the first chamber. The circuit board is housed in the first chamber. Therefore, it is possible to avoid problems such as malfunctions in the electric compressor caused by the circuit board being exposed to refrigerant gas while it is in operation. As a result, the reliability of the electric compressor can be improved.

[0010] In the above-described electric compressor, the second chamber is partitioned by the support plate, the partition wall, a partition wall having at least a bottom wall facing the support plate, and a side wall extending between the bottom wall and the partition wall and provided on the partition wall or the bottom wall, and a first partition wall sealing material is provided between the side wall provided on the bottom wall and the partition wall, or between the bottom wall and the side wall provided on the partition wall to seal the space between them, and the inverter has a resin housing member that houses the connection terminals, and the housing member has the second end of the conductive member inserted into the connection terminals The chamber has an insertion hole for a receiving member that opens to allow the receiving member to be inserted, the side wall has a compartment side wall insertion hole that opens so that the insertion hole for the receiving member is located in the second chamber and into which the receiving member is inserted, a second compartment wall sealing material is provided between the receiving member and the compartment side wall insertion hole to seal the space between them, and a receiving member sealing material is provided between the conductive member and the inner circumferential surface of the receiving member insertion hole to seal the space between them, and the discharge port is preferably formed between the sealing surface of the partition wall with the support plate sealing material and the sealing surface of the first compartment wall sealing material.

[0011] Thus, a partition wall having a support plate, a partition wall, and a bottom wall, and a side wall provided on the partition wall or bottom wall are suitable for a configuration that partitions the second chamber. Furthermore, the first partition wall sealing material can prevent the refrigerant gas in the second chamber from leaking into the first chamber from between the side wall and the partition wall, or from between the bottom wall and the side wall. In addition, the housing member is inserted through the partition side wall insertion hole so that the housing member insertion hole is located inside the second chamber. This makes it easier to insert the second end of the conductive member into the connection terminal through the housing member insertion hole. Furthermore, the second partition wall sealing material can prevent the refrigerant gas in the second chamber from leaking into the first chamber from between the housing member and the inner surface of the partition side wall insertion hole. Furthermore, the housing member sealing material can prevent the refrigerant gas in the second chamber from entering the inside of the housing member from between the conductive member and the inner surface of the housing member insertion hole. Furthermore, the area between the sealing surface of the support plate sealing material in the partition wall and the sealing surface of the first compartment wall sealing material is suitable for forming an outlet.

[0012] In the above-described electric compressor, the circuit board is provided with a board connector, and the connection terminals preferably have press-fit portions that protrude from the housing member and are press-fitted into the board connector.

[0013] According to this, with the housing member inserted through the partition side wall insertion hole so that the housing member insertion hole is located inside the second chamber, the connection terminal can be easily connected to the circuit board by press-fitting the press-fit portion of the connection terminal into the board connector portion.

[0014] In the above-described electric compressor, the second chamber is partitioned by the support plate, the partition wall, a partition wall having at least a bottom wall facing the support plate, and a side wall extending between the bottom wall and the partition wall and provided on the partition wall or the bottom wall, and a first partition wall sealing material is provided between the side wall provided on the bottom wall and the partition wall, or between the bottom wall and the side wall provided on the partition wall to seal the space between them, and the inverter has a resin housing member for housing the connection terminals, and the housing member has a housing member insertion hole that opens so that the second end of the conductive member is inserted into the connection terminal, and The bottom wall has an opening so that the second end of the conductive member can be inserted into the connection terminal, and a compartment bottom wall insertion hole is formed into which the second end is inserted. The housing member is arranged in the first chamber such that the housing member insertion hole overlaps with the compartment bottom wall insertion hole. The conductive member is connected to the connection terminal via the compartment bottom wall insertion hole and the housing member insertion hole. A third compartment wall sealing material is provided between the conductive member and the compartment bottom wall insertion hole to seal the space between them. The discharge port is preferably formed between the sealing surface of the partition wall with the support plate sealing material and the sealing surface of the first compartment wall sealing material.

[0015] Thus, the partition wall having a support plate, a partition wall, and a bottom wall, and the side wall provided on the partition wall or bottom wall are suitable configurations for partitioning the second chamber. Furthermore, the first partition wall sealing material can prevent the refrigerant gas in the second chamber from leaking into the first chamber from between the side wall and the partition wall, or from between the bottom wall and the side wall. The housing member is positioned in the first chamber such that the housing member insertion hole overlaps with the compartment bottom wall insertion hole. The conductive member is connected to the connection terminal via the compartment bottom wall insertion hole and the housing member insertion hole. This allows the conductive member to be easily connected to the connection terminal even when the housing member is positioned in the first chamber. Furthermore, the third partition wall sealing material can prevent the refrigerant gas in the second chamber from leaking into the first chamber from between the conductive member and the compartment bottom wall insertion hole. In this way, the housing member can be positioned in the first chamber, so the volume of the second chamber can be reduced compared to when the housing member is located in the second chamber. Furthermore, the area between the sealing surface of the support plate sealing material in the partition wall and the sealing surface of the first compartment wall sealing material is suitable for forming an outlet.

[0016] In the above-described electric compressor, the circuit board, the housing member insertion hole, and the compartment bottom wall insertion hole are preferably arranged in such order that they overlap in the thickness direction of the circuit board. According to this, for example, compared to a case where the circuit board is arranged so that it does not overlap with the insertion holes for the housing member and the insertion holes for the bottom wall of the compartment in the thickness direction of the circuit board, it is possible to save space in the inverter room. As a result, it is possible to miniaturize the electric compressor.

[0017] In the above-described electric compressor, the support plate is preferably fixed to the inner circumferential surface of the motor chamber that partitions the motor chamber in the partition wall. According to this, for example, the volume of the second chamber can be reduced compared to the case where the support plate is fixed to the inner circumferential surface of the second chamber that partitions the second chamber in the partition wall.

[0018] In the electric compressor described above, it is preferable that the hermetic terminal has a glass member that insulates and seals between the support plate and the conductive member. According to this, for example, refrigerant gas that has leaked from the motor chamber into the second chamber through the glass member stays in the second chamber. Therefore, it is possible to avoid a problem that the circuit board is exposed to the refrigerant gas while the circuit board is being driven, resulting in a malfunction of the electric compressor. As a result, the reliability of the electric compressor can be improved.

Effect of the Invention

[0019] According to this invention, the reliability of the electric compressor can be improved.

Brief Description of the Drawings

[0020] [Figure 1] FIG. 1 is a cross-sectional view of an electric compressor in the first embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing a part of the electric compressor. [Figure 3] FIG. 3 is a cross-sectional view showing a part of the electric compressor in the second embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing a part of the electric compressor in a modified example.

Mode for Carrying Out the Invention

[0021] [First Embodiment] Hereinafter, a first embodiment in which an electric compressor is embodied will be described according to FIGS. 1 and 2. The electric compressor of the present embodiment is used, for example, in a vehicle air conditioner.

[0022] <Basic Configuration of Electric Compressor> As shown in Figure 1, the electric compressor 10 includes a housing 11. The housing 11 has a discharge housing 12 and a motor housing 13. The discharge housing 12 and the motor housing 13 are cylindrical. The motor housing 13 is connected to the discharge housing 12. The discharge housing 12 and the motor housing 13 are made of metal. Therefore, the housing 11 is made of metal. The discharge housing 12 and the motor housing 13 are made of, for example, aluminum. The motor housing 13 has a plate-shaped end wall 13a and a cylindrical peripheral wall 13b. The peripheral wall 13b extends from the outer circumference of the end wall 13a.

[0023] The electric compressor 10 includes a rotating shaft 14. The rotating shaft 14 is housed within the motor housing 13. Therefore, the rotating shaft 14 is housed within the housing 11. The rotating shaft 14 is rotatably supported within the motor housing 13.

[0024] The electric compressor 10 comprises a compression unit 15 and a motor 16. The compression unit 15 and the motor 16 are housed within a motor housing 13. Therefore, the housing 11 houses the compression unit 15 and the motor 16. The compression unit 15 and the motor 16 are arranged side by side in the axial direction of the rotating shaft 14, which is the direction in which the rotation axis of the rotating shaft 14 extends. The motor 16 is positioned closer to the end wall 13a of the motor housing 13 than the compression unit 15. Within the motor housing 13, the space located closer to the end wall 13a of the motor housing 13 than the compression unit 15 is the motor chamber S1. Therefore, the housing 11 partitions the motor chamber S1. The motor chamber S1 houses the motor 16.

[0025] The compression unit 15 is driven by the rotation of the rotating shaft 14. The compression unit 15 compresses a refrigerant gas. The refrigerant gas is a natural refrigerant. The refrigerant gas is propane gas. The compression unit 15 is a scroll type, for example, having a fixed scroll (not shown) fixed to the motor housing 13 within the motor housing 13, and an orbiting scroll (not shown) positioned opposite the fixed scroll.

[0026] The motor 16 has a cylindrical stator 17 and a cylindrical rotor 18. The rotor 18 is located inside the stator 17. The rotor 18 is configured to rotate integrally with the rotating shaft 14. The rotor 18 has a rotor core 18a and a plurality of permanent magnets 18b. The rotor core 18a is fixed to the rotating shaft 14. The plurality of permanent magnets 18b are provided on the rotor core 18a. The stator 17 surrounds the rotor 18. The stator 17 has a cylindrical stator core 17a and a motor coil 19. The motor coil 19 is wound around the stator core 17a. When power is supplied to the motor coil 19, the rotor 18 rotates and the rotating shaft 14 rotates integrally with the rotor 18. The compression unit 15 is driven in accordance with the rotation of the rotating shaft 14. In this way, the motor 16 drives the compression unit 15.

[0027] The housing 11 has an intake port 13h. The intake port 13h is formed in the peripheral wall 13b of the motor housing 13, near the end wall 13a. The intake port 13h draws refrigerant gas into the motor chamber S1. Therefore, refrigerant gas is drawn into the motor chamber S1.

[0028] The first end of an external refrigerant circuit (not shown) is connected to the intake port 13h. The housing 11 has a discharge port 12h. The discharge port 12h is formed in the discharge housing 12. The second end of the external refrigerant circuit is connected to the discharge port 12h.

[0029] The refrigerant gas drawn into the motor chamber S1 from the first end of the external refrigerant circuit via the intake port 13h is compressed by the compression unit 15. The refrigerant gas compressed in the compression unit 15 flows out to the second end of the external refrigerant circuit via the discharge port 12h. The refrigerant gas that has flowed out to the external refrigerant circuit then flows back into the motor chamber S1 via the intake port 13h after passing through the heat exchanger and expansion valve of the external refrigerant circuit. The electric compressor 10 and the external refrigerant circuit constitute a vehicle air conditioning system.

[0030] The motor housing 13 has a protruding wall 22 and an extending wall 23. The protruding wall 22 protrudes radially outward from a portion of the outer circumferential surface of the circumferential wall 13b of the motor housing 13. The protruding wall 22 is continuous with the end wall 13a of the motor housing 13. The thickness direction of the protruding wall 22 coincides with the thickness direction of the end wall 13a of the motor housing 13. The outer circumferential portion of the protruding wall 22 and the outer circumferential portion of the end wall 13a of the motor housing 13 are continuous. The extending wall 23 extends cylindrically from the outer circumferential portion of the protruding wall 22 and the outer circumferential portion of the end wall 13a of the motor housing 13 toward the opposite side from the circumferential wall 13b.

[0031] The electric compressor 10 is mounted on the vehicle such that the direction of protrusion from the outer surface of the peripheral wall 13b of the motor housing 13 is upward in the vertical direction. The radial direction of the rotating shaft 14 coincides with the vertical direction.

[0032] The electric compressor 10 is equipped with a cover 24. The cover 24 is part of the housing 11. Therefore, the housing 11 has the cover 24. The cover 24 is plate-shaped. The cover 24 is connected to the extending wall 23 in a manner that closes the opening of the extending wall 23. The inverter room 25 is partitioned by the end wall 13a, the protruding wall 22, the extending wall 23, and the cover 24 of the motor housing 13. Therefore, the housing 11 partitions the inverter room 25. The end wall 13a and the protruding wall 22 of the motor housing 13 form a partition wall separating the motor room S1 and the inverter room 25.

[0033] The electric compressor 10 is equipped with an inverter 26. The inverter 26 is housed in an inverter chamber 25. Therefore, the inverter chamber 25 houses the inverter 26. The inverter 26 drives the motor 16. The compression unit 15, the motor 16, and the inverter 26 are arranged in this order in the axial direction of the rotating shaft 14.

[0034] The inverter 26 has a circuit board 27. The circuit board 27 is placed in the inverter chamber 25 such that the thickness direction of the circuit board 27 coincides with the thickness direction of the end wall 13a of the motor housing 13 and the thickness direction of the protruding wall 22.

[0035] The circuit board 27 has a switching element Q and a control unit 28 mounted on it. The switching element Q constitutes an inverter circuit 29. The switching element Q performs a switching operation to drive the motor 16. The control unit 28 controls the driving of the inverter circuit 29. The control unit 28 controls the switching operation of the switching element Q. A pattern 30 is formed on the circuit board 27. The pattern 30 constitutes the inverter circuit 29. The circuit board 27 also has a filter 31 mounted on it. The filter 31 reduces noise.

[0036] The electric compressor 10 is equipped with motor wiring 32. The motor wiring 32 is drawn out from the motor coil 19 of the motor 16. Specifically, three motor wirings 32 are drawn out from the portion of the motor coil 19 located near the end wall 13a of the motor housing 13, corresponding to the U-phase, V-phase, and W-phase motor coils 19. Each motor wiring 32 is drawn out from the motor coil 19 with the windings that make up a part of the motor coil 19 covered with an insulating coating.

[0037] A cluster block 33 is located inside the motor chamber S1. The cluster block 33 is made of resin. Terminals 33a are housed inside the cluster block 33. The end of each motor wiring 32 opposite to the motor coil 19 is inserted into the cluster block 33 and connected to terminals 33a.

[0038] <Bulkhead through hole> As shown in Figure 2, a partition wall through-hole 34 is formed in the end wall 13a of the motor housing 13. The partition wall through-hole 34 penetrates the end wall 13a of the motor housing 13 in the thickness direction of the end wall 13a. The partition wall through-hole 34 is formed in the end wall 13a of the motor housing 13 in a portion located radially outward from the center of the end wall 13a of the motor housing 13 in the direction of the rotation axis 14. The partition wall through-hole 34 is formed in a portion located vertically above the center of the end wall 13a of the motor housing 13.

[0039] The first end of the partition wall through-hole 34 opens to the surface of the end wall 13a of the motor housing 13 that is located on the motor chamber S1 side. The surface of the end wall 13a of the motor housing 13 that is located on the motor chamber S1 side is the inner circumferential surface of the motor chamber S1 that partitions the motor chamber S1 at the end wall 13a of the motor housing 13. The second end of the partition wall through-hole 34 opens to the surface of the end wall 13a of the motor housing 13 that is located on the inverter chamber 25 side. Therefore, the partition wall through-hole 34 penetrates through to open into the motor chamber S1 and the inverter chamber 25, respectively.

[0040] <Positioning recess> The surface of the end wall 13a of the motor housing 13 that faces the inverter chamber 25 is the inner circumferential surface of the inverter chamber 25 that demarcates the inverter chamber 25 at the end wall 13a of the motor housing 13. The surface of the protruding wall 22 that faces the inverter chamber 25 is the inner circumferential surface of the inverter chamber 25 that demarcates the inverter chamber 25 at the protruding wall 22. Multiple positioning recesses 35 are formed in the motor housing 13. The multiple positioning recesses 35 are formed on the surface of the end wall 13a of the motor housing 13 that faces the inverter chamber 25, and on the surface of the protruding wall 22 that faces the inverter chamber 25, respectively.

[0041] <Airtight terminal> The electric compressor 10 is equipped with an airtight terminal 40. The airtight terminal 40 is located on the end wall 13a of the motor housing 13. The airtight terminal 40 seals the motor chamber S1 and the inverter chamber 25. The airtight terminal 40 electrically connects the motor 16 and the inverter 26.

[0042] The airtight terminal 40 includes a conductive member 41, a support plate 42, a glass member 43, and a support plate sealing material 44. The conductive member 41 is made of a conductive material. The airtight terminal 40 has three conductive members 41 corresponding to the U-phase, V-phase, and W-phase motor coils 19. Note that in Figure 2, only one conductive member 41 is shown for illustrative purposes. The conductive member 41 is a cylindrical metal pin that extends in a straight line. The conductive member 41 is inserted into the partition wall penetration hole 34.

[0043] The first end of the conductive member 41 is electrically connected to the motor wiring 32 via terminal 33a in the cluster block 33 within the motor chamber S1. Thus, the first end of the conductive member 41 is connected to the motor 16 within the motor chamber S1. The second end of the conductive member 41 passes through the partition wall penetration hole 34 and protrudes into the inverter chamber 25.

[0044] The support plate 42 is plate-shaped. The support plate 42 is made of metal. The support plate 42 is formed of, for example, steel. The support plate 42 has a plate end wall 45 and a plate cylindrical wall 46. The plate end wall 45 is flat. The support plate 42 is fixed to the end wall 13a of the motor housing 13 such that the first surface of the plate end wall 45 extends along the surface of the end wall 13a of the motor housing 13 that is located on the inverter chamber 25 side. The support plate 42 is provided in the inverter chamber 25. The support plate 42 is fixed to the end wall 13a of the motor housing 13.

[0045] The support plate 42 has a plate through hole 47. The plate through hole 47 is formed in the plate end wall 45. The plate through hole 47 penetrates the plate end wall 45 in the thickness direction of the plate end wall 45.

[0046] The plate cylindrical wall 46 protrudes from the second surface of the plate end wall 45. The inside of the plate cylindrical wall 46 communicates with the plate through hole 47. A conductive member 41 penetrates through the plate through hole 47 and the inside of the plate cylindrical wall 46.

[0047] The glass member 43 is positioned inside the plate through-hole 47 and the plate cylinder wall 46. The glass member 43 has insulating properties. The glass member 43 is a glass sintered body. The glass member 43 is interposed between the support plate 42 and the conductive member 41. The glass member 43 insulates the space between the support plate 42 and the conductive member 41. The glass member 43 seals the space between the support plate 42 and the conductive member 41. The support plate 42 supports the conductive member 41 with the glass member 43 providing insulation between the support plate 42 and the conductive member 41.

[0048] The support plate sealing material 44 is plate-shaped. The support plate sealing material 44 is a gasket. The support plate sealing material 44 is interposed between the first surface of the plate end wall 45 and the surface of the end wall 13a of the motor housing 13 that is located on the inverter chamber 25 side. Therefore, the support plate sealing material 44 is provided between the support plate 42 and the end wall 13a of the motor housing 13. The support plate sealing material 44 seals to prevent the refrigerant gas in the motor chamber S1 from leaking into the inverter chamber 25.

[0049] The support plate sealing material 44 has a sealing hole 44a. The sealing hole 44a connects the partition wall through hole 34 and the plate through hole 47. A conductive member 41 passes through the sealing hole 44a.

[0050] The airtight terminal 40 has an insulating member 48. The insulating member 48 is made of rubber. The insulating member 48 is cylindrical. The conductive member 41 penetrates the inside of the insulating member 48. The insulating member 48 covers the portion of the conductive member 41 that protrudes from the plate end wall 45 and is located inside the partition wall through hole 34. The insulating member 48 is recessed into the inside of the cluster block 33. The insulating member 48 insulates between the conductive member 41 and the end wall 13a of the motor housing 13.

[0051] <Case> The electric compressor 10 comprises a case 50. The case 50 has a bottom wall 51 and side walls 52. The bottom wall 51 is plate-shaped. The side walls 52 extend cylindrically from the outer circumference of the bottom wall 51. The case 50 is a partition wall having the bottom wall 51.

[0052] The case 50 has multiple positioning protrusions 53. The multiple positioning protrusions 53 protrude from the end faces of the side walls 52 that are located opposite the bottom wall 51. Each positioning protrusion 53 is configured to be insertable into each positioning recess 35. The case 50 is positioned relative to the motor housing 13 by inserting each positioning protrusion 53 into each positioning recess 35.

[0053] The bottom wall 51 faces at least the support plate 42. The side wall 52 extends from the bottom wall 51 toward the end wall 13a and protruding wall 22 of the motor housing 13. The side wall 52 extends between the bottom wall 51 and the end wall 13a and protruding wall 22 of the motor housing 13. The side wall 52 is provided on the bottom wall 51.

[0054] <Insertion hole in the side wall of the compartment> A compartment side wall insertion hole 54 is formed in the side wall 52. The compartment side wall insertion hole 54 is formed in the portion of the side wall 52 located vertically downward. The compartment side wall insertion hole 54 penetrates the side wall 52.

[0055] <Wall sealing material for section 1> A first compartment wall sealant 55 is provided between the end face of the side wall 52 opposite to the bottom wall 51 and the end wall 13a and protruding wall 22 of the motor housing 13. The first compartment wall sealant 55 is made of rubber. The first compartment wall sealant 55 is, for example, an O-ring. The first compartment wall sealant 55 seals the space between the side wall 52 and the end wall 13a and protruding wall 22 of the motor housing 13. In this way, a first compartment wall sealant 55 is provided between the side wall 52 and the end wall 13a and protruding wall 22 of the motor housing 13 to seal the space between them.

[0056] <First Chamber, Second Chamber> The inverter chamber 25 is divided into a first chamber 56 and a second chamber 57. The second chamber 57 is divided by a support plate 42, the end wall 13a of the motor housing 13, a protruding wall 22, a bottom wall 51, and a side wall 52. The second chamber 57 is isolated from the first chamber 56. The first chamber 56 is the space outside the second chamber 57 within the inverter chamber 25. The first chamber 56 houses the circuit board 27. Refrigerant gas leaking from the motor chamber S1 through the support plate sealing material 44 accumulates in the second chamber 57.

[0057] <Containing components> The inverter 26 has a housing member 60. The housing member 60 is made of resin. The housing member 60 has a housing member body 61 and a housing member lid 62. The housing member body 61 is rectangular in shape. The housing member body 61 has a housing chamber 63 and a housing member insertion hole 64. The first end of the housing member insertion hole 64 opens to the outside of the housing member body 61. The second end of the housing member insertion hole 64 communicates with the housing chamber 63.

[0058] The lid portion 62 of the housing member is flat. The lid portion 62 of the housing member closes the opening in the housing chamber 63 that is on the opposite side from the housing member insertion hole 64. A resin sealing material 65 is provided between the housing member body portion 61 and the housing member lid portion 62 to seal the space between them. The resin sealing material 65 is annular in shape. The resin sealing material 65 is made of rubber.

[0059] The housing member 60 is inserted into the compartment side wall insertion hole 54. Therefore, the housing member 60 is inserted into the compartment side wall insertion hole 54. The housing member 60 is inserted into the compartment side wall insertion hole 54 such that the housing member insertion hole 64 is located inside the second chamber 57. Therefore, the compartment side wall insertion hole 54 is open so that the housing member insertion hole 64 is located inside the second chamber 57.

[0060] <Wall sealing material for section 2> A second compartment wall sealing material 66 is provided between the housing member 60 and the compartment side wall insertion hole 54. The second compartment wall sealing material 66 is made of rubber. The second compartment wall sealing material 66 is, for example, a grommet. The second compartment wall sealing material 66 seals the space between the housing member 60 and the compartment side wall insertion hole 54. In this way, a second compartment wall sealing material 66 is provided between the housing member 60 and the compartment side wall insertion hole 54 to seal the space between them.

[0061] <Board connector section> The circuit board 27 is provided with a board connector 67. The board connector 67 is a female connector component. The board connector 67 is electrically connected to the circuit board 27. Specifically, the board connector 67 is electrically connected to the pattern 30 of the circuit board 27. Therefore, the board connector 67 is electrically connected to the inverter circuit 29.

[0062] <Connection terminals> The inverter 26 has a connection terminal 68. The connection terminal 68 has a first terminal 69 and a second terminal 70. The first terminal 69 is housed in the housing chamber 63. Therefore, the housing member 60 houses the connection terminal 68.

[0063] The first end of the first terminal 69 is configured to be connectable to the second end of the conductive member 41. The first end of the first terminal 69 is cylindrical. The second end of the first terminal 69 is located inside the housing chamber 63. The second terminal 70 is embedded in the housing member body 61, penetrating through it. The first end of the second terminal 70 protrudes into the housing chamber 63. The first end of the second terminal 70 is connected to the second end of the first terminal 69. The second end of the second terminal 70 protrudes from the outer surface of the housing member body 61 toward the circuit board 27. The second end of the second terminal 70 is a press-fit portion 71 that is press-fitted into the board connector portion 67. Therefore, the connection terminal 68 has a press-fit portion 71 that protrudes from the housing member 60 and is press-fitted into the board connector portion 67.

[0064] The second end of the conductive member 41, which protrudes into the housing chamber 63 via the housing member insertion hole 64, is inserted into the first end of the first terminal 69. Therefore, the housing member insertion hole 64 is open so that the second end of the conductive member 41 is inserted into the connection terminal 68. When the second end of the conductive member 41 is inserted into the first end of the first terminal 69, the connection terminal 68 and the second end of the conductive member 41 are electrically connected. In this way, the second end of the conductive member 41 is connected to the connection terminal 68 within the inverter chamber 25. Furthermore, when the second end of the second terminal 70 is press-fitted into the board connector portion 67, the connection terminal 68 and the circuit board 27 are electrically connected. In this way, the connection terminal 68 connects the airtight terminal 40 and the circuit board 27.

[0065] <Sealing material for containment components> A housing member seal material 72 is provided between the conductive member 41 and the housing member insertion hole 64. The housing member seal material 72 is made of rubber. The housing member seal material 72 is cylindrical. The conductive member 41 passes through the inside of the housing member seal material 72. The housing member seal material 72 is in close contact with the conductive member 41. The housing member seal material 72 is inserted into the housing member insertion hole 64. The housing member seal material 72 is in close contact with the inner circumferential surface of the housing member insertion hole 64. The housing member seal material 72 seals the space between the conductive member 41 and the housing member insertion hole 64. In this way, a housing member seal material 72 is provided between the conductive member 41 and the inner circumferential surface of the housing member insertion hole 64 to seal the space between them.

[0066] <Exhaust port> An outlet 73 is formed in the protruding wall 22. Therefore, an outlet 73 is formed in the housing 11. The first end of the outlet 73 communicates with the second chamber 57. The second end of the outlet 73 opens to the outer surface of the protruding wall 22. The outlet 73 is formed between the sealing surface of the end wall 13a of the motor housing 13 with the support plate sealing material 44 and the sealing surface of the protruding wall 22 with the first compartment wall sealing material 55.

[0067] <Sealing part> The outlet 73 is sealed by a sealing part 74. The sealing part 74 is an explosion-proof valve. The sealing part 74 is configured to open when the pressure in the second chamber 57 rises and reaches a predetermined pressure. Once the sealing part 74 opens, it remains open. When the sealing part 74 opens, the refrigerant gas in the second chamber 57 is discharged to the outside of the housing 11 through the outlet 73. Therefore, when the pressure in the second chamber 57 rises and reaches a predetermined pressure, the sealing part 74 discharges the refrigerant gas in the second chamber 57 to the outside of the housing 11. In this way, the outlet 73 discharges the refrigerant gas in the second chamber 57 to the outside of the housing 11.

[0068] The predetermined pressure is set lower than the pressure resistance of the housing member 60. Furthermore, the predetermined pressure is set lower than the pressure resistance of the first compartment wall sealing material 55 and the second compartment wall sealing material 66.

[0069] [Operation of the First Embodiment] Next, the operation of the first embodiment will be described. Refrigerant gas in the motor chamber S1 may leak from the motor chamber S1 into the second chamber 57 via the support plate seal material 44. Alternatively, refrigerant gas in the motor chamber S1 may leak from the motor chamber S1 into the second chamber 57 via the glass member 43. The refrigerant gas that leaks into the second chamber 57 remains in the second chamber 57. When the pressure in the second chamber 57 rises and reaches a predetermined pressure, the sealing part 74 opens. The sealing part 74 then discharges the refrigerant gas in the second chamber 57 to the outside of the housing 11. In this way, the refrigerant gas accumulated in the second chamber 57 is discharged to the outside of the housing 11 through the outlet 73.

[0070] The first compartment wall sealing material 55 prevents the refrigerant gas in the second chamber 57 from leaking into the first chamber 56 through the gap between the side wall 52 and the end wall 13a and protruding wall 22 of the motor housing 13. The second compartment wall sealing material 66 prevents the refrigerant gas in the second chamber 57 from leaking into the first chamber 56 through the gap between the housing member 60 and the inner circumferential surface of the compartment side wall insertion hole 54.

[0071] The second chamber 57 is isolated from the first chamber 56. The circuit board 27 is housed inside the first chamber 56. Therefore, the problem of the electric compressor 10 malfunctioning due to the circuit board 27 being exposed to the refrigerant gas while it is operating is avoided.

[0072] Furthermore, the containment member sealing material 72 prevents the refrigerant gas in the second chamber 57 from entering the inside of the containment member 60 through the gap between the conductive member 41 and the inner circumferential surface of the containment member insertion hole 64. Therefore, the problem of malfunction in the electric compressor 10 occurring due to the connection between the conductive member 41 and the connection terminal 68 being exposed to refrigerant gas while the connection between the conductive member 41 and the connection terminal 68 is energized is avoided.

[0073] [Effects of the First Embodiment] In the first embodiment, the following effects can be obtained. (1-1) Refrigerant gas leaking from the motor chamber S1 into the second chamber 57 via the support plate seal material 44 accumulates in the second chamber 57. The refrigerant gas accumulated in the second chamber 57 is then discharged to the outside of the housing 11 through the outlet 73. Here, the second chamber 57 is isolated from the first chamber 56. The circuit board 27 is housed in the first chamber 56. Therefore, it is possible to avoid the problem of the electric compressor 10 malfunctioning due to the circuit board 27 being exposed to refrigerant gas while it is in operation. As a result, the reliability of the electric compressor 10 can be improved.

[0074] (1-2) The support plate 42, the end wall 13a, protruding wall 22, bottom wall 51, and side wall 52 of the motor housing 13 are suitable for a configuration that partitions the second chamber 57. Furthermore, the first partition wall sealing material 55 can prevent the refrigerant gas in the second chamber 57 from leaking into the first chamber 56 from between the side wall 52 and the end wall 13a and protruding wall 22 of the motor housing 13. In addition, the housing member 60 is inserted through the partition side wall insertion hole 54 so that the housing member insertion hole 64 is located inside the second chamber 57. This makes it easier to insert the second end of the conductive member 41 into the connection terminal 68 through the housing member insertion hole 64. Furthermore, the second partition wall sealing material 66 can prevent the refrigerant gas in the second chamber 57 from leaking into the first chamber 56 from between the housing member 60 and the inner surface of the partition side wall insertion hole 54. Furthermore, the containment member seal material 72 prevents the refrigerant gas in the second chamber 57 from entering the inside of the containment member 60 through the gap between the conductive member 41 and the inner circumferential surface of the containment member insertion hole 64. In addition, the area between the sealing surface of the support plate seal material 44 on the protruding wall 22 and the sealing surface of the first compartment wall seal material 55 is suitable for forming the discharge port 73.

[0075] (1-3) The circuit board 27 is provided with a board connector portion 67. The connection terminal 68 has a press-fit portion 71 that protrudes from the housing member 60 and is press-fitted into the board connector portion 67. With this configuration, the housing member 60 is inserted through the partition side wall insertion hole 54 so that the housing member insertion hole 64 is located inside the second chamber 57, and the press-fit portion 71 of the connection terminal 68 is press-fitted into the board connector portion 67. This allows the connection terminal 68 to be easily connected to the circuit board 27.

[0076] (1-4) For example, refrigerant gas that leaks from the motor chamber S1 into the second chamber 57 via the glass member 43 remains in the second chamber 57. Therefore, it is possible to avoid problems such as malfunctions in the electric compressor 10 caused by the circuit board 27 being exposed to refrigerant gas while the circuit board 27 is in operation. As a result, the reliability of the electric compressor 10 can be improved.

[0077] (1-5) The connection of the connection terminal 68 to the circuit board 27 is made by press-fitting the press-fit portion 71 into the board connector portion 67. Therefore, when connecting the connection terminal 68 to the circuit board 27, it is not necessary to solder the second end of the connection terminal 68 to the circuit board 27. Therefore, even if the housing member 60 is inserted into the compartment side wall insertion hole 54 such that the housing member insertion hole 64 is located inside the second chamber 57, the connection terminal 68 can be easily connected to the circuit board 27. Thus, the productivity of the electric compressor 10 can be improved.

[0078] (1-6) The case 50 is positioned relative to the motor housing 13 by inserting each positioning projection 53 into each positioning recess 35. This suppresses misalignment of the side wall 52 relative to the motor housing 13, thereby improving the sealing performance of the first compartment wall sealing material 55.

[0079] [Second Embodiment] A second embodiment of the electric compressor will be described below with reference to Figure 3. In the embodiments described below, the same reference numerals are used for components that are the same as those in the first embodiment already described, and redundant explanations will be omitted or simplified.

[0080] As shown in Figure 3, the motor housing 13 has a side wall 81. The side wall 81 protrudes cylindrically from the surface of the end wall 13a of the motor housing 13 that is located on the inverter chamber 25 side, and from the surface of the protruding wall 22 that is located on the inverter chamber 25 side. Therefore, the side wall 81 is provided on the end wall 13a and the protruding wall 22 of the motor housing 13.

[0081] The electric compressor 10 is equipped with a compartment wall 82A having a bottom wall 82. The bottom wall 82 is flat. The bottom wall 82 is made of metal. The bottom wall 82 is joined to the side wall 81 with the opening of the side wall 81 closed. The side wall 81 extends between the bottom wall 82 and the end wall 13a and protruding wall 22 of the motor housing 13. The bottom wall 82 faces at least the support plate 42. A compartment bottom wall insertion hole 83 is formed in the bottom wall 82. The compartment bottom wall insertion hole 83 penetrates the bottom wall 82.

[0082] A first compartment wall sealing material 84 is provided between the side wall 81 and the bottom wall 82. The first compartment wall sealing material 84 is made of rubber. The first compartment wall sealing material 84 is, for example, a grommet. The first compartment wall sealing material 84 seals the space between the side wall 81 and the bottom wall 82. Thus, a first compartment wall sealing material 84 is provided between the bottom wall 82 and the side wall 81 to seal the space between them. The second chamber 57 is partitioned by the support plate 42, the end wall 13a of the motor housing 13, the protruding wall 22, the bottom wall 82, and the side wall 81.

[0083] The housing member 60 is positioned within the first chamber 56 such that the housing member insertion hole 64 overlaps with the compartment bottom wall insertion hole 83. The conductive member 41 is connected to the connection terminal 68 via the compartment bottom wall insertion hole 83 and the housing member insertion hole 64. The compartment bottom wall insertion hole 83 is open so that the second end of the conductive member 41 is inserted into the connection terminal 68. Thus, the second end of the conductive member 41 is inserted into the compartment bottom wall insertion hole 83. The circuit board 27, the housing member insertion hole 64, and the compartment bottom wall insertion hole 83 are positioned in this order so that they overlap in the thickness direction of the circuit board 27.

[0084] The compartment bottom wall insertion hole 83 is closed by a support member 85. The support member 85 is flat. The support member 85 is made of metal. The space between the support member 85 and the compartment bottom wall insertion hole 83 is sealed by a sealing member 86. The sealing member 86 is made of rubber. The sealing member 86 is, for example, a grommet. The support member 85 has a support hole 85a. The support hole 85a penetrates the support member 85 in the thickness direction of the support member 85. A conductive member 41 is inserted inside the support hole 85a. The space between the support hole 85a and the conductive member 41 is sealed by an insulating member 87. The insulating member 87 is made of glass. The insulating member 87 supports the conductive member 41 on the support member 85 while insulating the space between the conductive member 41 and the support member 85. The insulating member 87 seals the space between the conductive member 41 and the compartment bottom wall insertion hole 83.

[0085] The sealing member 86, the support member 85, and the insulating member 87 constitute a third compartment wall sealing material 88 that seals the space between the conductive member 41 and the compartment bottom wall insertion hole 83. In this way, a third compartment wall sealing material 88 is provided between the conductive member 41 and the compartment bottom wall insertion hole 83 to seal the space between them.

[0086] [Effects of the second embodiment] In the second embodiment, in addition to the effects (1-1) and (1-4) of the first embodiment, the following effects can be obtained.

[0087] (2-1) The support plate 42, the end wall 13a of the motor housing 13, the protruding wall 22, the bottom wall 82, and the side wall 81 are suitable for a configuration that partitions the second chamber 57. Furthermore, the first partition wall sealing material 84 can prevent the refrigerant gas in the second chamber 57 from leaking into the first chamber 56 from between the bottom wall 82 and the side wall 81. The housing member 60 is positioned in the first chamber 56 such that the housing member insertion hole 64 overlaps with the partition bottom wall insertion hole 83. The conductive member 41 is connected to the connection terminal 68 via the partition bottom wall insertion hole 83 and the housing member insertion hole 64. This allows the conductive member 41 to be easily connected to the connection terminal 68 even when the housing member 60 is positioned in the first chamber 56. Furthermore, the third partition wall sealing material 88 can prevent the refrigerant gas in the second chamber 57 from leaking into the first chamber 56 from between the conductive member 41 and the partition bottom wall insertion hole 83. In this way, the housing member 60 can be placed inside the first chamber 56, and the volume of the second chamber 57 can be reduced compared to when the housing member 60 is located inside the second chamber 57. Furthermore, the area between the sealing surface of the support plate sealing material 44 on the protruding wall 22 and the sealing surface of the first compartment wall sealing material 84 is suitable for forming the discharge port 73.

[0088] (2-2) The circuit board 27, the housing member insertion hole 64, and the compartment bottom wall insertion hole 83 are arranged in this order so as to overlap in the thickness direction of the circuit board 27. This arrangement allows for space savings in the inverter room 25 compared to, for example, a case where the circuit board 27 is not arranged so as to not overlap with the housing member insertion hole 64 and the compartment bottom wall insertion hole 83 in the thickness direction of the circuit board 27. As a result, the electric compressor 10 can be made smaller.

[0089] [Example of changes] Furthermore, each of the above embodiments can be implemented with the following modifications. The above embodiments and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0090] ○ As shown in Figure 4, the support plate 42 may be fixed to the inner circumferential surface of the motor chamber S1 that partitions the motor chamber S1 at the end wall 13a of the motor housing 13. In this way, the support plate 42 may be provided in the motor chamber S1. With this arrangement, for example, the volume of the second chamber 57 can be reduced compared to the case where the support plate 42 is fixed to the inner circumferential surface of the second chamber 57 that partitions the second chamber 57 at the end wall 13a of the motor housing 13.

[0091] ○ In the first embodiment, the substrate connector portion 67 may be configured such that, for example, the through hole formed in the circuit board 27 is treated with plating or the like. The press-fit portion 71 may also be press-fitted into the through hole.

[0092] ○ In the first embodiment, the circuit board 27 does not necessarily have to be provided with a board connector portion 67. In this case, the connection terminal 68 is connected to the circuit board 27, for example, by soldering.

[0093] ○ In the first embodiment, a sealing material may be further provided between the second terminal 70 of the connection terminal 68 and the housing member main body 61 to seal the space between them. ○ In the first embodiment, the first partition wall sealing material 55 may be, for example, an adhesive such as a liquid gasket or potting agent.

[0094] ○ In the first embodiment, the second partition wall sealing material 66 may be, for example, an adhesive such as a liquid gasket or potting agent. ○ In the first embodiment, the housing member sealing material 72 may be, for example, an adhesive such as a liquid gasket or potting agent.

[0095] ○ In the first embodiment, the housing member sealing material 72 may be integrated with the support plate 42 and the conductive member 41. Alternatively, the housing member sealing material 72 may be integrated with the housing member 60.

[0096] ○ In the first embodiment, the second compartment wall sealing material 66 may be integrated with the housing member 60. ○ In the second embodiment, the first partition wall sealing material 84 may be, for example, an adhesive such as a liquid gasket or potting agent.

[0097] ○ In the second embodiment, the third compartment wall sealing material 88 may be, for example, an adhesive such as a liquid gasket or potting agent. ○ In the second embodiment, the circuit board 27 may be arranged so as not to overlap with the housing member insertion hole 64 and the partition bottom wall insertion hole 83 in the thickness direction of the circuit board 27.

[0098] ○ In the second embodiment, the conductive member 41 may be divided into two members. In this case, one of the two members is supported on the support plate 42 via the glass member 43. The other of the two members is inserted into the second chamber 57 via the compartment bottom wall insertion hole 83. The conductive member 41 may then be formed by screw-connecting the two members. The other of the two members is connected to the connection terminal 68.

[0099] ○ In the second embodiment, an airtight terminal for sealing the first chamber 56 and the second chamber 57 may be further provided on the surface of the support member 85 located on the second chamber 57 side. In this case, the conductive member 41 and the conductive member constituting the airtight terminal for sealing the first chamber 56 and the second chamber 57 are connected by screw connection or welding. The conductive member constituting the airtight terminal for sealing the first chamber 56 and the second chamber 57 is connected to the connection terminal 68.

[0100] ○ In the first embodiment, the cover 24 may also serve as the bottom wall 51. ○ In the first embodiment, the motor housing 13 does not need to have a positioning recess 35. In this case, the case 50 does not have a positioning projection 53.

[0101] ○ In each of the above embodiments, the support plate sealing material 44 may be a rubber seal. ○ In each of the above embodiments, the electric compressor 10 may be configured such that, for example, the inverter 26 is positioned radially outward from the housing 11 relative to the rotating shaft 14. In short, the compression unit 15, motor 16, and inverter 26 do not necessarily have to be arranged in this order in the axial direction of the rotating shaft 14.

[0102] ○ In each of the above embodiments, the compression unit 15 is not limited to a scroll type, but may be a piston type, vane type, rotary type, or the like. ○ In each of the above embodiments, the refrigerant gas may be, for example, a fluorocarbon gas.

[0103] The technical concepts that can be understood from each of the above embodiments and their modifications are described below. <Note 1> A compression section that compresses the refrigerant gas, A motor that drives the compression section, An inverter that drives the motor, A housing comprising a motor chamber that houses the motor and from which refrigerant gas is drawn, and an inverter chamber that houses the inverter, with a partition wall separating the motor chamber and the inverter chamber, The motor chamber and the inverter chamber are sealed, and the motor and the inverter are electrically connected by airtight terminals, The aforementioned inverter is Circuit board and It has a connection terminal that connects the airtight terminal and the circuit board, The partition wall has through-holes that penetrate to open into the motor room and the inverter room, respectively. The aforementioned airtight terminal is A conductive member is inserted into the partition wall penetration hole, with its first end connected to the motor in the motor chamber and its second end connected to the connection terminal in the inverter chamber, A support plate provided in the motor room or the inverter room, which supports the conductive member and is fixed to the partition wall, An electric compressor having a support plate sealing material provided between the support plate and the partition wall, which seals to prevent refrigerant gas in the motor chamber from leaking into the inverter chamber, The inverter chamber is divided into a first chamber for housing the circuit board and a second chamber, which is isolated from the first chamber and where refrigerant gas leaking from the motor chamber through the support plate seal material accumulates. The electric compressor is characterized in that the housing has an outlet formed therein for discharging the refrigerant gas in the second chamber to the outside of the housing.

[0104] <Note 2> The second chamber is partitioned by the support plate, the partition wall, a partition wall having at least a bottom wall facing the support plate, and a side wall extending between the bottom wall and the partition wall and provided on the partition wall or the bottom wall. Between the side wall provided in the bottom wall and the partition wall, or between the bottom wall and the side wall provided in the partition wall, a first partition wall sealing material is provided to seal the space between them. The inverter has a resin housing member that houses the connection terminals, The housing member has a housing member insertion hole that opens so that the second end of the conductive member is inserted into the connection terminal, The side wall has an opening that is formed such that the insertion hole for the housing member is located within the second chamber, and the housing member is inserted into the compartment side wall. A second partition wall sealing material is provided between the aforementioned housing member and the partition side wall insertion hole to seal the space between them. Between the conductive member and the inner circumferential surface of the housing member insertion hole, a housing member sealing material is provided to seal the space between them. The electric compressor according to Appendix 1, characterized in that the discharge port is formed between the sealing surface of the support plate sealing material in the partition wall and the sealing surface of the first partition wall sealing material.

[0105] <Note 3> The circuit board is provided with a board connector section. The electric compressor according to Appendix 2, characterized in that the connection terminal has a press-fit portion that protrudes from the housing member and is press-fitted into the circuit board connector portion.

[0106] <Note 4> The second chamber is partitioned by the support plate, the partition wall, a partition wall having at least a bottom wall facing the support plate, and a side wall extending between the bottom wall and the partition wall and provided on the partition wall or the bottom wall. Between the side wall provided in the bottom wall and the partition wall, or between the bottom wall and the side wall provided in the partition wall, a first partition wall sealing material is provided to seal the space between them. The inverter has a resin housing member that houses the connection terminals, The housing member has a housing member insertion hole that opens so that the second end of the conductive member is inserted into the connection terminal, The bottom wall has an opening that allows the second end of the conductive member to be inserted into the connection terminal, and a compartment bottom wall insertion hole is formed into which the second end is inserted. The housing member is positioned within the first chamber such that the housing member insertion hole overlaps with the compartment bottom wall insertion hole. The conductive member is connected to the connection terminal via the insertion hole in the bottom wall of the compartment and the insertion hole in the housing member. A third compartment wall sealing material is provided between the conductive member and the compartment bottom wall insertion hole to seal the space between them. The electric compressor according to Appendix 1, characterized in that the discharge port is formed between the sealing surface of the support plate sealing material in the partition wall and the sealing surface of the first partition wall sealing material.

[0107] <Note 5> The electric compressor according to Appendix 4, characterized in that the circuit board, the housing member insertion hole, and the compartment bottom wall insertion hole are arranged in this order so as to overlap in the thickness direction of the circuit board.

[0108] <Note 6> The electric compressor according to any one of <Appendix 1> to <Appendix 5>, characterized in that the support plate is fixed to the inner circumferential surface of the motor chamber that partitions the motor chamber in the partition wall.

[0109] <Note 7> The electric compressor according to any one of <Appendix 1> to <Appendix 6>, characterized in that the airtight terminal has a glass member that insulates and seals the space between the support plate and the conductive member. [Explanation of Symbols]

[0110] 10...Electric compressor, 11...Housing, 13a...End wall forming a partition, 15...Compression section, 16...Motor, 22...Protruding wall forming a partition, 25...Inverter room, 26...Inverter, 27...Circuit board, 34...Partition through hole, 40...Airtight terminal, 41...Conductive member, 42...Support plate, 43...Glass member, 44...Support plate sealing material, 50...Case which is a partition wall, 51, 82...Bottom wall, 82A ...partition wall, 52, 81...side wall, 54...partition side wall insertion hole, 55, 84...first partition wall sealing material, 56...first chamber, 57...second chamber, 60...housing member, 64...housing member insertion hole, 66...second partition wall sealing material, 67...board connector section, 68...connection terminal, 71...press-fit section, 72...housing member sealing material, 73...discharge port, 83...partition bottom wall insertion hole, 88...third partition wall sealing material, S1...motor room.

Claims

1. A compression section that compresses the refrigerant gas, A motor that drives the compression section, An inverter that drives the motor, A housing comprising a motor chamber that houses the motor and from which refrigerant gas is drawn, and an inverter chamber that houses the inverter, with a partition wall separating the motor chamber and the inverter chamber, The motor chamber and the inverter chamber are sealed, and the motor and the inverter are electrically connected by airtight terminals, The aforementioned inverter is Circuit board and It has a connection terminal that connects the airtight terminal and the circuit board, The partition wall has through-holes that penetrate to open into the motor room and the inverter room, respectively. The aforementioned airtight terminal is A conductive member is inserted into the partition wall penetration hole, with its first end connected to the motor in the motor chamber and its second end connected to the connection terminal in the inverter chamber, A support plate provided in the motor room or the inverter room, which supports the conductive member and is fixed to the partition wall, An electric compressor having a support plate sealing material provided between the support plate and the partition wall, which seals to prevent refrigerant gas in the motor chamber from leaking into the inverter chamber, The inverter chamber is divided into a first chamber for housing the circuit board and a second chamber, which is isolated from the first chamber and where refrigerant gas leaking from the motor chamber through the support plate sealing material accumulates. The electric compressor is characterized in that the housing has an outlet formed therein for discharging the refrigerant gas in the second chamber to the outside of the housing.

2. The second chamber is partitioned by the support plate, the partition wall, a partition wall having at least a bottom wall facing the support plate, and a side wall extending between the bottom wall and the partition wall and provided on the partition wall or the bottom wall. Between the side wall provided in the bottom wall and the partition wall, or between the bottom wall and the side wall provided in the partition wall, a first partition wall sealing material is provided to seal the space between them. The inverter has a resin housing member that houses the connection terminals, The housing member has a housing member insertion hole that opens so that the second end of the conductive member is inserted into the connection terminal. The side wall has an opening that is formed in such a way that the insertion hole for the housing member is located within the second chamber, and into which the housing member is inserted. A second partition wall sealing material is provided between the aforementioned housing member and the partition side wall insertion hole to seal the space between them. Between the conductive member and the inner circumferential surface of the housing member insertion hole, a housing member sealing material is provided to seal the space between them. The electric compressor according to claim 1, characterized in that the discharge port is formed between the sealing surface of the support plate sealing material in the partition wall and the sealing surface of the first partition wall sealing material.

3. The circuit board is provided with a board connector section. The electric compressor according to claim 2, characterized in that the connection terminal has a press-fit portion that protrudes from the housing member and is press-fitted into the circuit board connector portion.

4. The second chamber is partitioned by the support plate, the partition wall, a partition wall having at least a bottom wall facing the support plate, and a side wall extending between the bottom wall and the partition wall and provided on the partition wall or the bottom wall. Between the side wall provided in the bottom wall and the partition wall, or between the bottom wall and the side wall provided in the partition wall, a first partition wall sealing material is provided to seal the space between them. The inverter has a resin housing member that houses the connection terminals, The housing member has a housing member insertion hole that opens so that the second end of the conductive member is inserted into the connection terminal. The bottom wall has an opening that allows the second end of the conductive member to be inserted into the connection terminal, and a compartment bottom wall insertion hole is formed into which the second end is inserted. The housing member is positioned within the first chamber such that the housing member insertion hole overlaps with the compartment bottom wall insertion hole. The conductive member is connected to the connection terminal via the insertion hole in the bottom wall of the compartment and the insertion hole in the housing member. A third partition wall sealing material is provided between the conductive member and the partition bottom wall insertion hole to seal the space between them. The electric compressor according to claim 1, characterized in that the discharge port is formed between the sealing surface of the support plate sealing material in the partition wall and the sealing surface of the first partition wall sealing material.

5. The electric compressor according to claim 4, characterized in that the circuit board, the housing member insertion hole, and the compartment bottom wall insertion hole are arranged in this order so as to overlap in the thickness direction of the circuit board.

6. The electric compressor according to any one of claims 1 to 5, characterized in that the support plate is fixed to the inner circumferential surface of the motor chamber that partitions the motor chamber in the partition wall.

7. The electric compressor according to any one of claims 1 to 5, characterized in that the airtight terminal has a glass member that insulates and seals the space between the support plate and the conductive member.

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