JP2020070755A - Motor compressor - Google Patents

Abstract

To provide a motor compressor capable of suppressing continuity between a connection part and a housing due to suck-up of liquid refrigerant without increasing the size.SOLUTION: The motor compressor includes a metal housing, a coil stored in the housing and having a first coil end, three-phase first to third phase wires 28a-28c drawn out of the first coil end, and a connection part 29 forming a neutral point with the first to third phase wires 28a-28c bundled and electrically connected. The motor compressor further includes an insulation-quality isolation member 37 having first to third outer periphery grooves 38a-38c in an outer peripheral face 371 where the first to third phase wires 28a-28c are stored, and arranged between the first coil ends of the first to third phase wires 28a-28c and the connection part 29. The first to third phase wires 28a-28c are stored in the first to third outer periphery grooves 38a-38c in the state where part of them are protruded from the outer peripheral face 371 of the isolation member 37, and thus isolated from one another.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electric compressor.

  BACKGROUND ART Conventionally, there is known an electric compressor including a metal housing, an electric motor housed in the housing, and a compression unit housed in the housing and driven by the electric motor to perform a refrigerant compression operation. ing. The electric motor includes a stator having a tubular stator core and a coil end having windings of a plurality of phases wound around the stator core and projecting from an axial end surface of the stator core.

  Further, the electric compressor disclosed in Patent Document 1 is a part of the winding, and the phase lines of a plurality of phases drawn out from the coil ends and the phase lines of a plurality of phases are bundled together and the phase lines of the plurality of phases are Is electrically connected to form a neutral point.

  By the way, when the operation of the electric compressor is stopped, liquid refrigerant may be accumulated in the housing, and the connection portion may be immersed in the accumulated liquid refrigerant. If the connection portion is immersed in the liquid refrigerant, the connection portion and the housing may be electrically connected via the liquid refrigerant. For this reason, it is common to arrange the connecting portion above the liquid surface of the liquid refrigerant so that the connecting portion is not immersed in the liquid refrigerant.

JP, 2009-264279, A

  However, even if the connection portion is arranged above the liquid surface of the liquid refrigerant, the liquid refrigerant may be sucked up by the capillary phenomenon from the gap between the bundled phase lines. When the sucked liquid refrigerant reaches the connecting portion, the connecting portion and the housing may be electrically connected via the liquid refrigerant. Further, the electric compressor is required to be downsized.

  The present invention has been made to solve the above problems, and an object thereof is to provide an electric compressor capable of suppressing conduction between a connection portion and a housing due to suction of a liquid refrigerant without causing an increase in size. It is in.

  An electric compressor for solving the above problems is provided with a metal housing, a cylindrical stator core housed in the housing, and a plurality of windings wound around the stator core in an axial direction of the stator core. An electric motor including a stator having a coil end protruding from an end surface of the coil, a compression unit that is housed in the housing and performs a refrigerant compression operation by being driven by the electric motor, and a part of the winding, A plurality of phase lines drawn from the coil end and the phase lines of the plurality of phases are bundled together, and the phase lines of the plurality of phases are electrically connected to each other to form a neutral point. And a plurality of outer peripheral grooves respectively accommodating the phase wires of the plurality of phases on an outer peripheral surface, and the coil end and the connection in the phase wires of the plurality of phases. And a phase wire of the plurality of phases is accommodated in the plurality of outer peripheral grooves in a state where a part of the phase wire protrudes from the outer peripheral surface of the separator, The point is that they are separated.

  According to this, since a sufficient gap is provided between the phase lines by the separating member, suction of the liquid refrigerant due to the capillary phenomenon is suppressed. Further, the size of the separating member can be reduced as compared with the case where the separating member is formed so that the entire phase wire fits in the outer peripheral groove of the separating member. As a result, it is possible to suppress the conduction between the connecting portion and the housing due to the suction of the liquid refrigerant without causing the electric compressor to be upsized.

Further, in the electric compressor, it is preferable that the connecting portion is arranged above the separating member in the gravity direction.
The liquid surface of the liquid refrigerant accumulated in the housing rises from the lower side to the upper side in the gravity direction. Therefore, by arranging the connecting portion above the separating member in the gravity direction, it is possible to prevent the connecting portion from being immersed in the liquid refrigerant before the separating member. As a result, conduction between the connecting portion and the housing can be further suppressed.

  Further, in the electric compressor, three-phase windings are wound around the stator core, a plurality of phase wires of each phase are drawn out from the coil ends, and the separating member has a triangular prism shape and an outer peripheral surface. It is preferable that each of the surfaces has a plurality of the outer peripheral grooves, and the plurality of phase lines of the same phase are housed in the plurality of outer peripheral grooves formed on the same surface of the outer peripheral surface of the separating member. ..

  Phase lines of the same phase are closer to each other than phase lines of different phases. Therefore, by accommodating a plurality of phase lines of the same phase in the outer peripheral groove formed on the same surface of the separating member, as compared with the case of accommodating in the outer peripheral groove formed on the different surface of the separating member, It is easy to store the phase wire in the outer peripheral groove.

Further, in the electric compressor, it is preferable that the separating member is arranged in a state of being in contact with the coil end in the axial direction of the stator core.
When the separating member is arranged apart from the coil end in the axial direction of the stator core, a useless space is generated between the separating member and the coil end. On the other hand, by disposing the separating member in contact with the coil end in the axial direction of the stator core, a space between the separating member and the coil end can be eliminated. Therefore, the electric compressor can be downsized in the axial direction of the stator core.

Further, in the electric compressor, it is preferable that the isolation member is fixed to the coil end by a fixing member.
According to this, for example, when the electric compressor is mounted on the vehicle, it is possible to prevent the separating member from coming off due to vibration of the vehicle or the like.

  The electric compressor may further include a bottomed tubular insulating case member that accommodates the connection portion, and the isolation member may be configured such that the outer peripheral surface faces the inner peripheral surface of the case member. The opening of the case member is closed, the case member has a plurality of inner peripheral grooves on the inner peripheral surface, and the phase wire is inserted by the inner peripheral groove of the case member and the outer peripheral groove of the separating member. It is preferable that the phase wire insertion portion is formed.

  According to this, since the connecting portion is housed in the case member, it is possible to suppress a short circuit between the connecting portion and the housing due to the contact of the connecting portion with the housing. Further, the opening of the case member is closed by the isolation member. Therefore, the liquid refrigerant is prevented from entering the space in which the connection portion is housed, and it is not necessary to prepare a member for closing the opening of the case member separately from the isolation member. Therefore, it is possible to enhance the insulating property between the connecting portion and the housing without increasing the number of parts of the electric compressor.

  ADVANTAGE OF THE INVENTION According to this invention, conduction | electrical_connection between a connection part and a housing by suction of a liquid refrigerant can be suppressed, without causing an increase in size.

The sectional side view of an electric compressor. (A) is a front view of a stator, (b) is a bottom view of a stator. (A) is a side view showing a phase line, a separating member, and a case member, (b) is a cross-sectional view of the phase line and the separating member, and (c) is a view of the separating member as seen from the connecting portion side. The side view which shows another example of an isolation member. (A) is a perspective view showing another example of a case member, (b) is a side view of a case member and a separating member of another example.

An embodiment in which an electric compressor is embodied will be described below with reference to FIGS. 1 to 3. The electric compressor of this embodiment is mounted on a vehicle.
As shown in FIG. 1, a housing 11 of the electric compressor 10 is connected to one end of the motor housing 12 and a bottomed cylindrical motor housing 12 having an opening 12a at one end (the left end in FIG. 1). The discharge housing 13 has a bottomed cylindrical shape. A bottomed cylindrical inverter cover 14 is attached to the bottom wall 121 of the motor housing 12. The motor housing 12, the discharge housing 13, and the inverter cover 14 are all made of metal (iron in this embodiment). A discharge chamber S1 is defined between the motor housing 12 and the discharge housing 13. A discharge port 15 is formed on the bottom wall of the discharge housing 13, and an external refrigerant circuit (not shown) is connected to the discharge port 15. A suction port (not shown) is formed on the peripheral wall 122 of the motor housing 12, and an external refrigerant circuit is connected to the suction port.

  A rotary shaft 16 is housed in the motor housing 12. Further, in the motor housing 12, a compression unit 17 that compresses the refrigerant and an electric motor 18 that drives the compression unit 17 are housed. The electric motor 18 drives the rotating shaft 16. The compression unit 17 is driven by the rotation of the rotary shaft 16. The electric motor 18 is arranged closer to the bottom wall 121 (right side in FIG. 1) of the motor housing 12 than the compression section 17.

  A shaft support member 19 is provided in the motor housing 12 between the compression unit 17 and the electric motor 18. An insertion hole 19a into which one end of the rotary shaft 16 is inserted is formed in the center of the shaft support member 19. A radial bearing 16 a is provided between the insertion hole 19 a and one end of the rotary shaft 16. One end of the rotary shaft 16 is rotatably supported by the shaft support member 19 via a radial bearing 16a.

  A bearing portion 121a is recessed in the bottom wall 121 of the motor housing 12. The other end of the rotating shaft 16 is inserted inside the bearing 121a. A radial bearing 16b is provided between the bearing 121a and the other end of the rotary shaft 16. The other end of the rotating shaft 16 is rotatably supported by the bearing 121a via a radial bearing 16b.

  Further, the housing space S2 is defined by the bottom wall 121 of the motor housing 12 and the inverter cover 14. A motor drive circuit 20 (shown by a chain double-dashed line in FIG. 1) is attached to the outer surface of the bottom wall 121 in the accommodation space S2. Therefore, in the present embodiment, the compression unit 17, the electric motor 18, and the motor drive circuit 20 are arranged in this order along the direction in which the axis L of the rotary shaft 16 extends (axial direction).

  The compression unit 17 includes a fixed scroll 17a fixed inside the motor housing 12, and a movable scroll 17b arranged to face the fixed scroll 17a. A compression chamber S3 whose volume can be changed is defined between the fixed scroll 17a and the movable scroll 17b.

  The electric motor 18 includes a rotor 21 (rotor) that rotates integrally with the rotating shaft 16 and a stator 22 (stator) fixed to the inner peripheral surface of the motor housing 12 so as to surround the rotor 21. There is.

  The rotor 21 has a cylindrical rotor core 23, and the rotor core 23 is fixed to the rotary shaft 16. A plurality of permanent magnets 24 are embedded in the rotor core 23, and the permanent magnets 24 are provided at equal pitches in the circumferential direction of the rotor core 23.

  The stator 22 has a tubular stator core 25 fixed to the inner peripheral surface of the motor housing 12, and a coil 26 formed by winding a winding wire 26 a around the stator core 25. The stator 22 of this embodiment has three-phase (U-phase, V-phase, W-phase) coils 26. The winding 26a is fixed to the stator core 25 by a fixed thread S (see FIGS. 2A and 2B). The coil 26 has a first coil end 261 projecting from one axial end surface 251 of the stator core 25 and a second coil end 262 projecting from another axial end surface 252 of the stator core 25. The first coil end 261 is located on the compression section 17 side (one end side in the axial direction of the rotating shaft 16), and the second coil end 262 is located on the motor drive circuit 20 side (the other end side in the axial direction of the rotating shaft 16). positioned.

  Two motor wirings 27 are drawn out from each of the U-phase, V-phase, and W-phase coils 26. Therefore, the U-phase, V-phase, and W-phase coils 26 have a double-wire structure formed by winding two conducting wires in order to reduce the voltage. Each motor wiring 27 is a part of the winding wire 26a, and is drawn out from the first coil end 261 in a state of being insulation-coated. In FIG. 1, only the two U-phase motor wires 27 are shown.

  The bottom wall 121 of the motor housing 12 has a through hole 121b formed therein. The airtight terminal 30 is arranged in the through hole 121b. The airtight terminal 30 has three conductive members 31 (only one is shown in FIG. 1) corresponding to the U-phase, V-phase, and W-phase coils 26. Each conductive member 31 is inserted into the through hole 121b, and one end thereof is electrically connected to the motor drive circuit 20 via the cable 20a. The other end of each conductive member 31 projects into the motor housing 12 from the accommodation space S2 via the through hole 121b. Further, the airtight terminal 30 has three insulating members 32 (only one is shown in FIG. 1) made of glass for insulating and fixing each conductive member 31 to the bottom wall 121.

  A connector 33 is housed in the motor housing 12. The connector 33 connects the motor wiring 27 and the conductive member 31. The connector 33 is arranged on the outer peripheral side of the stator core 25 and the second coil end 262 in the radial direction of the rotating shaft 16. The connector 33 includes three connection terminals 34 (only one is shown in FIG. 1) corresponding to the U-phase, V-phase, and W-phase coils 26, and an insulating cluster block 35 that accommodates the three connection terminals 34. Is equipped with.

  Further, as shown in FIGS. 2A and 2B, two first phase wires 28a as phase wires are drawn from the U-phase coil 26. Two second phase wires 28b as phase wires are drawn from the V-phase coil 26. Two third phase wires 28c (only one is shown in FIG. 2B) as a phase wire are drawn out from the W-phase coil 26. Each of the first to third phase wires 28a to 28c is a part of the winding 26a, and is drawn out from the first coil end 261 in a state of being insulation-coated. Therefore, a plurality of phase wires of each phase are drawn out from the first coil end 261. As shown in FIG. 3A, the tip ends of the first to third phase wires 28a to 28c are twisted and bundled in a state in which the insulating coating is removed to be electrically connected to each other. The connection portion 29 (neutral point) is configured. As shown in FIGS. 2A and 2B, the connecting portion 29 is housed in a bottomed tubular case member 36. Further, a triangular columnar separating member 37 is arranged between the first coil end 261 and the connecting portion 29 on the first to third phase wires 28 a to 28 c. The case member 36 and the separating member 37 are made of resin and have an insulating property.

  As shown in FIG. 3B, the isolation member 37 of the present embodiment has first to third outer surfaces 371a to 371c forming the outer peripheral surface 371. The first outer surface 371a has two first outer peripheral grooves 38a. The second outer surface 371b has two second outer peripheral grooves 38b. The third outer surface 371c has two third outer peripheral grooves 38c. Each of the first to third outer peripheral grooves 38a to 38c is formed over the entire axial direction of the separating member 37, and has an arc shape when the separating member 37 is viewed from the axial direction.

  One of the two first phase lines 28a is accommodated in one of the two first outer peripheral grooves 38a, and the other of the two first phase lines 28a is accommodated in the other of the two first outer peripheral grooves 38a. Has been done. One of the two second phase wires 28b is accommodated in one of the two second outer peripheral grooves 38b, and the other of the two second phase wires 28b is accommodated in the other of the two second outer peripheral grooves 38b. Has been done. One of the two third phase grooves 28c is accommodated in one of the two third outer peripheral grooves 38c, and the other of the two third phase lines 28c is accommodated in the other of the two third outer peripheral grooves 38c. Has been done.

  Therefore, as shown in FIG. 3A and FIG. 3C, the portion between the first coil end 261 and the connecting portion 29 in the first to third phase lines 28a to 28c is the first to third portions. They are separated from each other by being housed in the outer peripheral grooves 38a to 38c. Further, as shown in FIG. 3B, when a surface virtually extending the first outer surface 371a so as to cover the first outer peripheral groove 38a is a first virtual surface A1, a direction orthogonal to the first outer surface 371a. The distance from the first virtual surface A1 to the deepest part of the first outer peripheral groove 38a in is shorter than the diameter of the first phase line 28a. Further, when a surface that virtually extends the second outer surface 371b so as to cover the second outer peripheral groove 38b is referred to as a second virtual surface A2, the second outer surface from the second virtual surface A2 in the direction orthogonal to the second outer surface 371b. The distance to the deepest part of the groove 38b is shorter than the diameter of the second phase wire 28b. Further, when a surface virtually extending the third outer surface 371c so as to cover the third outer peripheral groove 38c is defined as a third virtual surface A3, the third outer surface from the third virtual surface A3 in the direction orthogonal to the third outer surface 371c. The distance to the deepest part of the groove 38c is shorter than the diameter of the third phase wire 28c. Therefore, the first to third phase lines 28a to 28c are separated from each other by being accommodated in the first to third outer peripheral grooves 38a to 38c in a state in which a part thereof protrudes from the outer peripheral surface 371 of the separating member 37. There is.

  As shown in FIG. 2A, the connecting portion 29 is arranged above the separating member 37 in the gravity direction. Therefore, the connecting portion 29 is positioned above the portion in which the first to third phase lines 28a to 28c are separated from each other by the separating member 37 in the gravity direction. Therefore, the electric compressor 10 of the present embodiment is mounted on the vehicle such that the connecting portion 29 is located above the separating member 37 in the gravity direction. Further, as shown in FIGS. 2A and 2B, the first to third phase lines 28 a to 28 c, the separating member 37, and the case member 36 include the first coil end 261 in the axial direction of the stator core 25. Is fixed to the first coil end 261 with the fixing thread S in a state of being in contact with. Therefore, in the present embodiment, the fixing yarn S functions as a fixing member that fixes the separating member 37 to the first coil end 261.

The operation and effect of this embodiment will be described.
(1) The first to third phase wires 28a to 28c are housed in the first to third outer peripheral grooves 38a to 38c in a state where a part of the first to third phase wires 28a to 28c protrude from the outer peripheral surface of the separating member 37, and thus are separated from each other. There is. That is, the isolation member 37 provides a sufficient gap between the first to third phase lines 28a to 28c. Therefore, suction of the liquid refrigerant due to the capillary phenomenon can be suppressed. Further, the size of the isolation member 37 can be reduced as compared with the case where the isolation member 37 is formed so that the entire first to third phase lines 28a to 28c fit into the first to third outer peripheral grooves 38a to 38c of the isolation member 37. .. As a result, it is possible to suppress the electrical connection between the connection portion 29 and the housing 11 due to the suction of the liquid refrigerant without causing the electric compressor 10 to be upsized.

  (2) The liquid surface of the liquid refrigerant accumulated in the housing 11 rises from the lower side to the upper side in the direction of gravity. Therefore, by arranging the connecting portion 29 above the separating member 37 in the direction of gravity, it is possible to prevent the connecting portion 29 from being immersed in the liquid refrigerant prior to the separating member 37. As a result, the electrical connection between the connecting portion 29 and the housing 11 can be further suppressed.

  (3) The separating member 37 is a triangular prism, and the phase lines of the same phase (for example, the first phase lines 28a) are formed on the same surface (for example, the first outer surface 371a) of the outer peripheral surface of the separating member 37. It is accommodated in the outer peripheral groove (for example, the first outer peripheral groove 38a). Phase lines of the same phase (for example, first phase lines 28a) are closer to each other than phase lines of different phases (for example, first phase line 28a and second phase line 28b). Therefore, the phase wires of the same phase (for example, the first phase wires 28a) are formed on different surfaces (for example, the first outer surface 371a and the second outer surface 371b) of the outer peripheral surface of the separating member 37 (for example, the first outer circumference). The first to third phase lines 28a to 28c are more easily accommodated in the first to third outer peripheral grooves 38a to 38c than in the case where they are accommodated in the groove 38a and the second outer peripheral groove 38b, respectively.

  (4) When the separating member 37 is arranged apart from the first coil end 261 in the axial direction of the stator core 25, a useless space is generated between the separating member 37 and the first coil end 261. On the other hand, since the isolation member 37 of this embodiment is arranged in contact with the first coil end 261, the space between the isolation member 37 and the first coil end 261 can be eliminated. Therefore, the electric compressor 10 can be downsized in the axial direction of the stator core 25.

(5) The separating member 37 is fixed to the first coil end 261 by the fixing thread S. Therefore, it is possible to prevent the separating member 37 from coming off due to the vibration of the vehicle or the like.
(6) Since the connecting portion 29 is housed in the case member 36, a short circuit between the connecting portion 29 and the housing 11 due to the contact of the connecting portion 29 with the housing 11 can be suppressed.

This embodiment can be modified and implemented as follows. The present embodiment and the modified examples can be implemented in combination with each other within a technically consistent range.
The number of phases of the coil 26 is not limited to three and may be two or four or more.

The number of the motor wires 27 and the phase wires drawn from the coils 26 of each phase is not limited to two, and may be one or three or more.
The method of forming the connecting portion 29 is not limited to the method of twisting and bundling the tip end portions of the first to third phase wires 28a to 28c in a state where the insulating coating is removed, and may be only bundling without twisting.

  The shape of the separating member 37 is not limited to the triangular prism shape, and may be changed appropriately. The separating member 37 may have a columnar shape as shown in FIG. 4, or may have a square pillar shape, although not shown. Further, the separating member 37 may have a plate shape.

  The plurality of phase wires of the same phase may not be accommodated in the plurality of outer peripheral grooves formed on the same surface of the outer peripheral surface of the separating member 37. For example, one of the two first phase wires 28a is housed in one of the two first outer peripheral grooves 38a, and the other of the two first phase wires 28a is housed in one of the two second outer peripheral grooves 38b. One of the two second phase wires 28b is accommodated in the other of the two second outer peripheral grooves 38b, and the other of the two second phase wires 28b is accommodated in the other of the two first outer peripheral grooves 38a. It may have been done.

The configurations of the case member 36 and the separating member 37 may be changed as follows.
As shown in FIGS. 5A and 5B, the case member 36 has a bottomed triangular tube shape, and the separating member 37 closes the opening 36 a of the case member 36. The case member 36 has first to third inner surfaces 361a to 361c forming an inner peripheral surface 361. The first inner surface 361a has two first inner circumferential grooves 39a. The second inner surface 361b has two second inner circumferential grooves 39b. The third inner surface 361c has two third inner circumferential grooves 39c. Each of the first to third inner circumferential grooves 39a to 39c has an arc shape when the case member 36 is viewed from the opening 36a. The first to third outer surfaces 371a to 371c of the separating member 37 face the first to third inner surfaces 361a to 361c of the case member 36. Further, the first to third outer peripheral grooves 38a to 38c of the separating member 37 face the first to third inner peripheral grooves 39a to 39c of the case member 36. Phase lines through which the first to third phase lines 28a to 28c are inserted by the first to third outer peripheral grooves 38a to 38c of the separating member 37 and the first to third inner peripheral grooves 39a to 39c of the case member 36. The insertion portion 40 is formed.

  In this case, the separation member 37 closes the opening 36a of the case member 36, so that the liquid refrigerant is prevented from entering the space in which the connection portion 29 is accommodated, and the opening 36a of the case member 36 is closed. It is not necessary to prepare a member separately from the separating member 37. Therefore, it is possible to enhance the insulating property between the connecting portion 29 and the housing 11 without increasing the number of parts of the electric compressor 10.

The case member 36 may be omitted. In this case, the connecting portion 29 is arranged above the separating member 37 in the gravity direction.
When the connecting portion 29 is housed in the case member 36, the separating member 37 may be arranged above the opening 36a of the case member 36 in the gravity direction.

The isolation member 37 may be separated from the first coil end 261 in the axial direction of the stator core 25.
The separating member 37 may not be fixed to the first coil end 261 by the fixing thread S.

The fixing member for fixing the winding 26a to the stator core 25 and fixing the case member 36 and the separating member 37 to the first coil end 261 is not limited to the fixing yarn S.
The compression unit 17 is not limited to the type configured by the fixed scroll 17a and the movable scroll 17b, and may be changed to, for example, a piston type or a vane type.

  DESCRIPTION OF SYMBOLS 10 ... Electric compressor, 11 ... Housing, 17 ... Compression part, 18 ... Electric motor, 22 ... Stator, 25 ... Stator core, 26 ... Coil, 26a ... Winding, 28a ... 1st phase wire as a phase wire, 28b ... Second phase line as phase line, 28c ... Third phase line as phase line, 29 ... Connection part, 36 ... Case member, 36a ... Opening part, 361 ... Inner peripheral surface, 37 ... Separating member, 371 ... Outer peripheral surface , 371a ... First outer surface as surface, 371b ... Second outer surface as surface, 371c ... Third outer surface as surface, 38a ... First outer peripheral groove as outer peripheral groove, 38b ... Second outer peripheral groove as outer peripheral groove, 38c ... third outer peripheral groove as outer peripheral groove, 39a ... first inner peripheral groove as inner peripheral groove, 39b ... second inner peripheral groove as inner peripheral groove, 39c ... third inner peripheral groove as inner peripheral groove, 40 ... Phase wire insertion part, 261 ... First carp as coil end End, fixing thread as the S ... fixed member.

Claims (6)

A metal housing,
An electric motor comprising a tubular stator core housed in the housing, and a stator having coil ends that are wound around the stator core and have a plurality of phases wound around the stator core and project from an axial end surface of the stator core.
A compression unit that is housed in the housing and that is driven by the electric motor to perform a refrigerant compression operation;
Phase wire of a plurality of phases, which is a part of the winding and is drawn from the coil end,
While the phase lines of the plurality of phases are bundled, the phase line of the plurality of phases are electrically connected to each other, and a connecting portion that constitutes a neutral point,
An electric compressor having
An outer peripheral groove having a plurality of outer peripheral grooves accommodating the phase wires of the plurality of phases, and an insulating isolation member arranged between the coil end and the connection portion in the phase wires of the plurality of phases ,
An electric compressor characterized in that the phase lines of the plurality of phases are separated from each other by being housed in the plurality of outer peripheral grooves in a state of partially protruding from the outer peripheral surface of the separating member.   The electric compressor according to claim 1, wherein the connecting portion is disposed above the separating member in the gravity direction. Three-phase windings are wound around the stator core, and a plurality of phase wires of each phase are drawn out from the coil ends.
The separating member has a triangular prism shape, and has a plurality of outer peripheral grooves on each outer peripheral surface,
The electric compressor according to claim 1 or 2, wherein the plurality of phase lines of the same phase are housed in the plurality of outer peripheral grooves formed on the same surface of the outer peripheral surface of the isolation member, respectively.   The electric compressor according to any one of claims 1 to 3, wherein the isolation member is arranged in a state of being in contact with the coil end in the axial direction of the stator core.   The electric compressor according to claim 4, wherein the separating member is fixed to the coil end by a fixing member. Further comprising a bottomed cylindrical insulating case member that accommodates the connection portion,
The isolation member closes the opening of the case member in a state where the outer peripheral surface faces the inner peripheral surface of the case member,
The case member has a plurality of inner peripheral grooves on the inner peripheral surface,
The electric compression according to any one of claims 1 to 5, wherein an inner peripheral groove of the case member and an outer peripheral groove of the separating member form a phase wire insertion portion through which the phase wire is inserted. Machine.