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WO2022180708A1 - Stator, electric motor, and air conditioner - Google Patents

Stator, electric motor, and air conditioner Download PDF

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Publication number
WO2022180708A1
WO2022180708A1 PCT/JP2021/006971 JP2021006971W WO2022180708A1 WO 2022180708 A1 WO2022180708 A1 WO 2022180708A1 JP 2021006971 W JP2021006971 W JP 2021006971W WO 2022180708 A1 WO2022180708 A1 WO 2022180708A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
stator core
resin
electric motor
windings
Prior art date
Application number
PCT/JP2021/006971
Other languages
French (fr)
Japanese (ja)
Inventor
諒伍 ▲高▼橋
和慶 土田
隆徳 渡邉
貴也 下川
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2023501735A priority Critical patent/JPWO2022180708A1/ja
Priority to PCT/JP2021/006971 priority patent/WO2022180708A1/en
Publication of WO2022180708A1 publication Critical patent/WO2022180708A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges

Definitions

  • the present disclosure relates to stators used in electric motors.
  • heat radiation members such as cooling fins are used to release the heat of the electric motor (see Patent Document 1, for example).
  • the conventional technology has the problem that the heat generated by the windings cannot be efficiently released to the outside of the stator.
  • the purpose of the present disclosure is to efficiently release the heat generated by the windings to the outside of the stator.
  • the stator of the present disclosure is a stator core having teeth; an insulating portion provided on the teeth; a winding wound around the insulation; a heat radiating member facing the outer peripheral surface of the stator core; and a resin covering at least a portion of the stator core.
  • the electric motor of the present disclosure is the stator; and a rotor disposed inside the stator.
  • the air conditioner of the present disclosure is indoor unit and and an outdoor unit connected to the indoor unit, Each of the indoor unit, the outdoor unit, or the indoor unit and the outdoor unit has the electric motor.
  • the heat generated by the windings can be efficiently released to the outside of the stator.
  • FIG. 1 is a cross-sectional view schematically showing an electric motor according to Embodiment 1; FIG. It is a side view which shows a stator roughly.
  • FIG. 4 is a side view schematically showing the structure of a stator; 4 is a front view schematically showing the structure of the stator; FIG. 4 is a front view schematically showing the structure of the stator;
  • FIG. 11 is a side view schematically showing a stator having another example of a heat dissipation member;
  • FIG. 7 is a schematic side view of a stator having a heat dissipation member shown in FIG. 6;
  • FIG. 7 is a front view schematically showing a stator having heat dissipation members shown in FIG. 6;
  • FIG. 4 is a side view schematically showing a stator having heat dissipation members shown in FIG. 6;
  • FIG. 6 is a front view schematically showing a stator having heat dissipation members shown in FIG. 6;
  • FIG. 11 is a side view showing a stator having still another example of a heat radiating member;
  • FIG. 10 is a schematic side view of a stator having a heat dissipation member shown in FIG. 9;
  • FIG. 10 is a schematic front view of a stator having heat dissipating members shown in FIG. 9;
  • FIG. 4 is a diagram schematically showing the configuration of an air conditioner according to Embodiment 2;
  • Embodiment 1 An electric motor 1 according to Embodiment 1 will be described below.
  • the z-axis direction (z-axis) indicates a direction parallel to the axis A1 of the electric motor 1
  • the x-axis direction (x-axis) indicates a direction orthogonal to the z-axis direction.
  • the y-axis direction (y-axis) indicates a direction orthogonal to both the z-axis direction and the x-axis direction.
  • the axis A ⁇ b>1 is the center of rotation of the rotor 2 , that is, the rotation axis of the rotor 2 .
  • the direction parallel to the axis A1 is also referred to as "the axial direction of the rotor 2" or simply “the axial direction”.
  • a radial direction is a radial direction of the rotor 2, the stator 3, or the stator core 31, and is a direction perpendicular to the axis A1.
  • the xy plane is a plane perpendicular to the axial direction.
  • An arrow D1 indicates a circumferential direction about the axis A1.
  • the circumferential direction of the rotor 2, stator 3, or stator core 31 is also simply referred to as "circumferential direction”.
  • FIG. 1 is a cross-sectional view schematically showing an electric motor 1 according to Embodiment 1.
  • the electric motor 1 has a rotor 2, a stator 3, and bearings 7a and 7b.
  • the electric motor 1 further has a bracket 8 and a waterproof rubber 9 that seals the electric motor 1 .
  • the electric motor 1 is, for example, a permanent magnet synchronous motor, but is not limited to this.
  • Bearings 7a and 7b rotatably support shaft 22 of rotor 2 .
  • the rotor 2 is rotatably arranged inside the stator 3 .
  • An air gap exists between the rotor 2 and the stator 3 .
  • the rotor 2 has a rotor core 21 and a shaft 22 .
  • the rotor 2 is rotatable around a rotation axis (that is, axis A1).
  • the rotor 2 may also have permanent magnets for forming the magnetic poles of the rotor 2 .
  • FIG. 2 is a side view schematically showing the stator 3.
  • FIG. 3 is a side view schematically showing the structure of the stator 3.
  • FIG. 4 is a front view schematically showing the structure of the stator 3.
  • FIG. 5 is a front view schematically showing the structure of the stator 3.
  • the resin 6 is omitted.
  • the stator 3 includes a stator core 31, at least one winding 32 (also referred to as stator winding), at least one insulating portion 33, a circuit board 4, lead wires 41 connected to the circuit board 4, and the circuit board. 4, a heat radiating member 5, and resin 6 (also called mold resin).
  • the stator core 31 , the windings 32 , the insulating portion 33 and the heat radiating member 5 are integrally molded with the resin 6 .
  • the stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, and the resin 6 are integrated as one component (also called molded stator).
  • stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, and the circuit board 4 may be integrally molded with the resin 6.
  • stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, the circuit board 4, and the resin 6 are integrated as one component (also called molded stator).
  • stator core 31 , the windings 32 , the insulating portion 33 , the heat dissipation member 5 , the circuit board 4 , and the drive circuit 42 may be integrally molded with the resin 6 .
  • the stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, the circuit board 4, the drive circuit 42, and the resin 6 are integrated as one component (also called molded stator).
  • the stator core 31 has at least one tooth 311.
  • stator core 31 has a plurality of teeth 311 .
  • the stator core 31 is formed of a plurality of magnetic steel sheets laminated in the axial direction.
  • each of the plurality of electromagnetic steel sheets is formed into a predetermined shape by punching. These electromagnetic steel sheets are fixed to each other by caulking, welding, adhesion, or the like.
  • the windings 32 are, for example, magnet wires.
  • the winding 32 is wound around the insulating portion 33 .
  • a coil is formed by winding the wire 32 around the insulating portion 33 .
  • the winding 32 is electrically connected to a terminal 32a (also referred to as a winding terminal).
  • the end of the winding 32 is hooked on the hook of the terminal 32a and fixed to the terminal 32a by fusing or soldering.
  • the terminal 32 a is fixed to the insulating portion 33 and electrically connected to the circuit board 4 .
  • the insulating portion 33 is provided on each tooth 311, for example.
  • the insulating portion 33 is combined with each tooth 311 .
  • the insulating portion 33 has at least one fixing portion 331 for fixing the circuit board 4 .
  • the insulating portion 33 is, for example, thermoplastic resin such as polybutylene terephthalate (PBT).
  • PBT polybutylene terephthalate
  • the insulating portion 33 electrically insulates the stator core 31 (specifically, each tooth 311 of the stator core 31).
  • the insulating portion 33 is molded integrally with the stator core 31 .
  • the insulating portion 33 may be molded in advance and the molded insulating portion 33 may be combined with the stator core 31 .
  • the circuit board 4 has a positioning hole 43 (also simply referred to as a "hole”) that engages with the fixing portion 331 (specifically, the protrusion 331a) of the insulating portion 33.
  • the fixing portion 331 of the insulating portion 33 has a projection 331a and a support portion 331b.
  • the protrusion 331 a is inserted into a positioning hole 43 formed in the circuit board 4 .
  • the support portion 331b supports the circuit board 4 in the axial direction and positions the circuit board 4 in the axial direction.
  • the circuit board 4 is positioned on one end side of the stator 3 in the axial direction of the stator 3 .
  • the drive circuit 42 is a circuit for controlling the rotation of the rotor 2.
  • the drive circuit 42 includes, for example, a drive element 42a and a Hall IC (Integrated Circuit) 42b.
  • the drive element 42a is, for example, a power transistor.
  • Hall IC 42 b detects the magnetic field from rotor 2 in order to detect the rotational position of rotor 2 .
  • the resin 6 covers at least part of the stator core 31.
  • resin 6 covers the outer peripheral surface of stator core 31 .
  • Resin 6 is, for example, a thermosetting resin such as bulk molding compound (BMC).
  • BMC bulk molding compound
  • Bulk molding compounds are suitable for insert molding as they allow low pressure molding. When a bulk molding compound is used as the resin 6, deformation of inserts such as the circuit board 4 or the stator core 31 can be prevented when the resin 6 is molded using a mold, and the quality of the electric motor 1 is improved. can be made
  • a part of the heat radiating member 5 is pressed by the mold. Furthermore, the material of the resin 6 is injected into the mold so that a part of the heat radiating member 5 is exposed to the outside of the stator 3 . Through this process, part of the heat radiating member 5 can be exposed to the outside of the stator 3 .
  • the resin 6 may be a thermoplastic resin such as polyphenylene sulfide (PPS). Since PPS has higher thermal conductivity than BMC, the heat generated in the windings 32 is easily transferred to the heat radiating member 5 .
  • PPS polyphenylene sulfide
  • the heat dissipation member 5 faces the outer peripheral surface of the stator core 31 .
  • the heat dissipation member 5 extends continuously in the circumferential direction of the stator core 31 .
  • the heat dissipation member 5 may cover the entire outer peripheral surface of the stator core 31 .
  • the heat dissipation member 5 is made of, for example, a metal material such as aluminum.
  • the heat dissipation member 5 is fixed by the resin 6 so as to face the outer peripheral surface of the stator core 31 . In this case, part of the heat dissipation member 5 may be fitted with the resin 6 .
  • the heat radiating member 5 When part of the heat radiating member 5 is fitted with the resin 6 , the heat radiating member 5 is firmly fixed so as to face the outer peripheral surface of the stator core 31 . At least part of the heat dissipation member 5 is exposed outside the stator 3 . With this configuration, the heat generated by the windings 32 is efficiently released to the outside of the stator 3 .
  • the heat dissipation member 5 may be directly provided on the outer peripheral surface of the stator core 31. That is, the heat dissipation member 5 may be fixed to the outer peripheral surface of the stator core 31 . With this configuration, the heat generated by the windings 32 is directly transmitted to the heat radiating member 5 and radiated to the outside of the stator 3 more efficiently.
  • the stator core 31, the windings 32, and the insulating portion 33 may be integrally molded with the resin 6.
  • the stator core 31, the windings 32, the insulating portion 33, and the resin 6 are integrated as one component (also called molded stator).
  • the heat radiating member 5 is fixed to the resin 6 so as to face the outer peripheral surface of the stator core 31 by press fitting, shrink fitting, or screws, for example. With this configuration, the heat generated by the windings 32 is transmitted to the heat radiating member 5 through the resin 6 and efficiently radiated to the outside of the stator 3 .
  • FIG. 6 is a side view schematically showing a stator 3 having a heat radiating member 5a as another example of the heat radiating member 5.
  • FIG. 7 is a side view schematically showing the stator 3 having the heat dissipation member 5a shown in FIG. In FIG. 7, the resin 6 and the circuit board 4 are omitted.
  • FIG. 8 is a front view schematically showing the stator 3 having the heat radiating member 5a shown in FIG. In FIG. 8, the resin 6 and the circuit board 4 are omitted.
  • the heat radiating member 5a described in the modification 1 can be applied to the stator 3 described in the first embodiment.
  • the heat dissipating member 5a in Modification 1 has a base portion 51 and at least one protruding portion 52 protruding from the base portion 51.
  • the base portion 51 is supported by the resin 6 . Since the base portion 51 is supported by the resin 6 , the heat radiating member 5 a is firmly fixed so as to face the outer peripheral surface of the stator core 31 .
  • the base portion 51 may be fitted with the resin 6 .
  • the heat dissipation member 5a (specifically, the base portion 51) extends continuously in the circumferential direction of the stator core 31.
  • the heat dissipation member 5 a may cover the entire outer peripheral surface of the stator core 31 .
  • the base portion 51 may cover the entire outer peripheral surface of the stator core 31 .
  • the heat dissipation member 5a may have a plurality of protrusions 52.
  • the number of teeth 311 and the number of protrusions 52 are the same.
  • each protrusion 52 faces the teeth 311 . That is, when viewed in the direction in which teeth 311 extend, projections 52 overlap at least a portion of teeth 311 . With this configuration, the heat generated in the windings 32 is efficiently released from the protrusions 52 to the outside of the stator 3 .
  • the winding 32 is wound around each tooth 311 by concentrated winding.
  • the number of coils formed by windings 32 is the same as the number of teeth 311 . Therefore, in Modification 1, the number of teeth 311, the number of coils, and the number of protrusions 52 are the same.
  • Each protrusion 52 protrudes radially, for example.
  • Each protrusion 52 is exposed to the outside of the stator 3 . Since each protrusion 52 is exposed to the outside of the stator 3 , the heat generated by the windings 32 is efficiently released from each protrusion 52 to the outside of the stator 3 .
  • At least part of the base portion 51 may be exposed to the outside of the stator 3 . Also in this case, the heat generated by the windings 32 is efficiently released from the base portion 51 to the outside of the stator 3 .
  • the base portion 51 and each projection portion 52 may be exposed to the outside of the stator 3 . Also in this case, the heat generated by the windings 32 is efficiently released to the outside of the stator 3 from the base portion 51 and each projection portion 52 .
  • resin 6 may be provided between two protrusions 52 adjacent in the circumferential direction of stator core 31 .
  • the base portion 51 is fitted with the resin 6 and each projection portion 52 is exposed to the outside of the stator 3 .
  • the heat radiating member 5 a is firmly fixed so as to face the outer peripheral surface of the stator core 31 , and the heat generated in the windings 32 is efficiently radiated to the outside of the stator 3 through the protrusions 52 .
  • FIG. 9 is a side view showing a stator 3 having a heat radiating member 5b as still another example of the heat radiating member 5.
  • FIG. 10 is a side view schematically showing the stator 3 having the heat radiating member 5b shown in FIG. In FIG. 10, the resin 6 and the circuit board 4 are omitted.
  • FIG. 11 is a front view schematically showing the stator 3 having the heat radiating member 5b shown in FIG. In FIG. 11, the resin 6 and the circuit board 4 are omitted.
  • the heat radiating member 5b described in the modification 2 can be applied to the stator 3 described in the first embodiment.
  • the heat dissipating member 5 b in Modification 2 has a base portion 51 , at least one projecting portion 52 projecting from the base portion 51 , and at least one fin 53 projecting from the projecting portion 52 .
  • the base portion 51 is supported by the resin 6 . Since the base portion 51 is supported by the resin 6 , the heat dissipation member 5 b is firmly fixed so as to face the outer peripheral surface of the stator core 31 .
  • the base portion 51 may be fitted with the resin 6 .
  • the heat dissipation member 5b (specifically, the base portion 51) extends continuously in the circumferential direction of the stator core 31.
  • the heat dissipation member 5 b may cover the entire outer peripheral surface of the stator core 31 .
  • the base portion 51 may cover the entire outer peripheral surface of the stator core 31 .
  • Each fin 53 protrudes radially, for example.
  • Each fin 53 may be, for example, a plate and may have a tapered shape.
  • Each fin 53 is exposed outside the stator 3 . Since each fin 53 is exposed to the outside of the stator 3 , the heat generated by the windings 32 is efficiently released from each fin 53 to the outside of the stator 3 .
  • the heat dissipation member 5b may have a plurality of fins 53.
  • each fin 53 faces teeth 311 . That is, when viewed in the direction in which teeth 311 extend, fins 53 overlap at least a portion of teeth 311 . With this configuration, the heat generated by the windings 32 is efficiently released from the fins 53 to the outside of the stator 3 .
  • the resin 6 may be provided between two protrusions 52 that are adjacent in the circumferential direction of the stator core 31 .
  • the base portion 51 is supported by the resin 6 and each protrusion 52 is exposed to the outside of the stator 3 .
  • the heat radiating member 5b is firmly fixed so as to face the outer peripheral surface of the stator core 31, and the heat generated in the windings 32 is efficiently released to the outside of the stator 3 through the projections 52 and the fins 53.
  • Each fin 53 may protrude from the base portion 51 without the heat radiating member 5b having the projecting portion 52.
  • resin 6 may be provided between two fins 53 adjacent in the circumferential direction of stator core 31 .
  • the base portion 51 is supported by the resin 6 and each fin 53 is exposed outside the stator 3 .
  • the heat radiating member 5 b is firmly fixed so as to face the outer peripheral surface of the stator core 31 , and the heat generated by the windings 32 is efficiently radiated from the fins 53 to the outside of the stator 3 .
  • the thermal resistance between the stator core 31 and the resin 6 can be reduced. Furthermore, when the stator core 31, the windings 32, the insulating portion 33, and the heat dissipation member 5 are integrally molded with the resin 6, the number of parts and the manufacturing process for attaching the heat dissipation member 5 can be reduced.
  • the stator core 31, the windings 32, the insulating portion 33, the heat radiation member 5, and the circuit board 4 are integrally molded with the resin 6, the heat generated by the windings 32 is radiated radially through the heat radiation member 5. Therefore, the temperature rise of the circuit board 4 or the drive circuit 42 fixed to the circuit board 4 can be prevented.
  • the heat dissipation member 5 faces the outer peripheral surface of the stator core 31, so heat generated in the windings 32 can be dissipated in the radial direction. Therefore, when the circuit board 4 is located on one end side of the stator 3 in the axial direction of the stator 3 , it is possible to prevent the heat generated by the windings 32 from being transmitted to the circuit board 4 . As a result, the temperature rise of the circuit board 4 or the drive circuit 42 fixed to the circuit board 4 due to the heat generated by the windings 32 can be prevented.
  • the heat dissipation member 5 faces the outer peripheral surface of the stator core 31, it is not always necessary to provide the heat dissipation member 5 on one end side of the stator 3 in the axial direction of the stator 3. Therefore, the cost of the stator 3 can be reduced.
  • the heat radiating member 5a has the base portion 51 and at least one projecting portion 52 protruding from the base portion 51, the surface area of the heat radiating member 5a exposed to the outside of the stator 3 can be increased. As a result, heat generated by the windings 32 can be efficiently released to the outside of the stator 3 .
  • stator 3 When the number of teeth 311 and the number of protrusions 52 are the same, the stator 3 can be provided with an even heat dissipation path. As a result, heat retention in the stator 3 can be prevented.
  • the protrusions 52 overlap at least a part of the teeth 311 when viewed in the direction in which the teeth 311 extend, the heat generated in the windings 32 is efficiently transferred from the protrusions 52 to the outside of the stator 3 . can be released well.
  • the heat dissipation member 5a can be firmly fixed so as to face the outer peripheral surface of the stator core 31. As a result, vibration and noise in the electric motor 1 can be reduced while the electric motor 1 is in operation.
  • the heat radiating member 5 When at least part of the heat radiating member 5 is exposed outside the stator 3, the heat radiating member 5 is exposed to the outside air. As a result, heat generated by the windings 32 can be efficiently released to the outside of the stator 3 .
  • the heat radiating member 5b has fins 53 exposed to the outside of the stator 3
  • the surface area of the heat radiating member 5b exposed to the outside of the stator 3 can be increased. Since the fins 53 are exposed to the outside air, the heat generated by the windings 32 can be efficiently released from the fins 53 to the outside of the stator 3 .
  • the heat radiating member 5 covers the entire outer peripheral surface of the stator core 31, the area of the heat radiating member 5 facing the outer peripheral surface of the stator core 31 further increases. As a result, the heat generated by the windings 32 can be more efficiently released to the outside of the stator 3.
  • FIG. 12 is a diagram schematically showing the configuration of air conditioner 10 according to Embodiment 2. As shown in FIG.
  • An air conditioner 10 according to Embodiment 2 includes an indoor unit 11 as a fan (also referred to as a first fan) and an outdoor unit 13 as a fan (also referred to as a second fan) connected to the indoor unit 11.
  • a fan also referred to as a first fan
  • an outdoor unit 13 as a fan (also referred to as a second fan) connected to the indoor unit 11.
  • the air conditioner 10 has an indoor unit 11, a refrigerant pipe 12, and an outdoor unit 13.
  • the outdoor unit 13 is connected to the indoor unit 11 through the refrigerant pipe 12 .
  • the indoor unit 11 has an electric motor 11a (for example, the electric motor 1 according to Embodiment 1), a blower section 11b that blows air by being driven by the electric motor 11a, and a housing 11c that covers the electric motor 11a and the blower section 11b.
  • the air blower 11b has, for example, blades 11d driven by an electric motor 11a.
  • blades 11d are fixed to the shaft of electric motor 11a and generate airflow.
  • the outdoor unit 13 includes an electric motor 13a (for example, the electric motor 1 according to Embodiment 1), an air blower 13b, a compressor 14, a heat exchanger (not shown), an air blower 13b, a compressor 14, and a heat exchanger. and a housing 13c covering the exchanger.
  • the air blower 13b blows air by being driven by the electric motor 13a.
  • the air blower 13b has, for example, blades 13d driven by an electric motor 13a.
  • the blades 13d are fixed to the shaft of the electric motor 13a and generate airflow.
  • the compressor 14 includes an electric motor 14a (for example, the electric motor 1 according to Embodiment 1), a compression mechanism 14b (for example, a refrigerant circuit) driven by the electric motor 14a, and a housing 14c that covers the electric motor 14a and the compression mechanism 14b. have.
  • an electric motor 14a for example, the electric motor 1 according to Embodiment 1
  • a compression mechanism 14b for example, a refrigerant circuit driven by the electric motor 14a
  • a housing 14c that covers the electric motor 14a and the compression mechanism 14b.
  • At least one of the indoor unit 11 and the outdoor unit 13 has the electric motor 1 described in the first embodiment. That is, each of the indoor unit 11, the outdoor unit 13, or the indoor unit 11 and the outdoor unit 13 has the electric motor 1 described in the first embodiment.
  • the electric motor 1 described in the first embodiment is applied to at least one of the electric motors 11a and 13a as the driving source of the air blower. That is, the electric motor 1 described in Embodiment 1 is applied to each of the indoor unit 11 and the outdoor unit 13 or the indoor unit 11 and the outdoor unit 13 .
  • the electric motor 1 described in the first embodiment may be applied to the electric motor 14 a of the compressor 14 .
  • the air conditioner 10 can perform air conditioning, for example, a cooling operation in which cool air is blown from the indoor unit 11 and a heating operation in which warm air is blown.
  • the electric motor 11a is a drive source for driving the air blower 11b.
  • the air blower 11b can blow the adjusted air.
  • the electric motor 11a is fixed to the housing 11c of the indoor unit 11 with screws, for example.
  • the electric motor 13a is fixed to the housing 13c of the outdoor unit 13 with screws, for example.
  • the electric motor 1 according to Embodiment 1 when used as the drive source for the blower (for example, the indoor unit 11), the same advantages as those described in Embodiment 1 can be obtained. As a result, it is possible to prevent the efficiency of the blower from decreasing.
  • the blower having the electric motor 1 according to Embodiment 1 and the blades (for example, the blades 11d or 13d) driven by the electric motor 1 can be used alone as a device for blowing air. This blower can also be applied to devices other than the air conditioner 10 .
  • Embodiment 1 when the electric motor 1 according to Embodiment 1 is used as the drive source for the compressor 14, the same advantages as those described in Embodiment 1 can be obtained. As a result, the efficiency of the compressor 14 can be improved.
  • the electric motor 1 described in Embodiment 1 can be installed in equipment having a drive source, such as a ventilation fan, a home appliance, or a machine tool, in addition to the air conditioner 10 .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

This stator (3) has a stator core (31) having teeth (311), an insulating portion (33) provided to the teeth (311), a winding (32) wound around the insulating portion (33), a heat dissipation member (5) facing an outer peripheral surface of the stator core (31), and a resin (6) covering at least part of the stator core (31).

Description

ステータ、電動機、及び空気調和機Stator, electric motor, and air conditioner
　本開示は、電動機に用いられるステータに関する。 The present disclosure relates to stators used in electric motors.
　一般に、電動機の熱を放出するため、冷却フィンなどの放熱部材が用いられている（例えば、特許文献１参照）。 In general, heat radiation members such as cooling fins are used to release the heat of the electric motor (see Patent Document 1, for example).
特開平６－２９２３４６号公報JP-A-6-292346
　しかしながら、従来の技術では、巻線で発生した熱を、ステータの外部に効率よく放出できないという問題がある。 However, the conventional technology has the problem that the heat generated by the windings cannot be efficiently released to the outside of the stator.
　本開示の目的は、巻線で発生した熱を、ステータの外部に効率よく放出することである。 The purpose of the present disclosure is to efficiently release the heat generated by the windings to the outside of the stator.
　本開示のステータは、
　ティースを有するステータコアと、
　前記ティースに設けられた絶縁部と、
　前記絶縁部に巻かれた巻線と、
　前記ステータコアの外周面に対向する放熱部材と、
　前記ステータコアの少なくとも一部を覆っている樹脂と
　を備える。
　本開示の電動機は、
　前記ステータと、
　前記ステータの内側に配置されたロータと
　を備える。
　本開示の空気調和機は、
　室内機と、
　前記室内機に接続される室外機と
　を備え、
　前記室内機、前記室外機、又は前記室内機及び前記室外機の各々は、前記電動機を有する。 The stator of the present disclosure is
a stator core having teeth;
an insulating portion provided on the teeth;
a winding wound around the insulation;
a heat radiating member facing the outer peripheral surface of the stator core;
and a resin covering at least a portion of the stator core.
The electric motor of the present disclosure is
the stator;
and a rotor disposed inside the stator.
The air conditioner of the present disclosure is
indoor unit and
and an outdoor unit connected to the indoor unit,
Each of the indoor unit, the outdoor unit, or the indoor unit and the outdoor unit has the electric motor.
　本開示によれば、巻線で発生した熱を、ステータの外部に効率よく放出することができる。 According to the present disclosure, the heat generated by the windings can be efficiently released to the outside of the stator.
実施の形態１に係る電動機を概略的に示す断面図である。1 is a cross-sectional view schematically showing an electric motor according to Embodiment 1; FIG. ステータを概略的に示す側面図である。It is a side view which shows a stator roughly. ステータの構造を概略的に示す側面図である。FIG. 4 is a side view schematically showing the structure of a stator; ステータの構造を概略的に示す正面図である。4 is a front view schematically showing the structure of the stator; FIG. ステータの構造を概略的に示す正面図である。4 is a front view schematically showing the structure of the stator; FIG. 放熱部材の他の例を有するステータを概略的に示す側面図である。FIG. 11 is a side view schematically showing a stator having another example of a heat dissipation member; 図６に示される放熱部材を有するステータを概略的に示す側面図である。FIG. 7 is a schematic side view of a stator having a heat dissipation member shown in FIG. 6; 図６に示される放熱部材を有するステータを概略的に示す正面図である。FIG. 7 is a front view schematically showing a stator having heat dissipation members shown in FIG. 6; 放熱部材のさらに他の例を有するステータを示す側面図である。FIG. 11 is a side view showing a stator having still another example of a heat radiating member; 図９に示される放熱部材を有するステータを概略的に示す側面図である。FIG. 10 is a schematic side view of a stator having a heat dissipation member shown in FIG. 9; 図９に示される放熱部材を有するステータを概略的に示す正面図である。FIG. 10 is a schematic front view of a stator having heat dissipating members shown in FIG. 9; 実施の形態２に係る空気調和機の構成を概略的に示す図である。FIG. 4 is a diagram schematically showing the configuration of an air conditioner according to Embodiment 2;
実施の形態１．
　実施の形態１に係る電動機１について以下に説明する。
　各図に示されるｘｙｚ直交座標系において、ｚ軸方向（ｚ軸）は、電動機１の軸線Ａ１と平行な方向を示し、ｘ軸方向（ｘ軸）は、ｚ軸方向に直交する方向を示し、ｙ軸方向（ｙ軸）は、ｚ軸方向及びｘ軸方向の両方に直交する方向を示す。軸線Ａ１は、ロータ２の回転中心、すなわち、ロータ２の回転軸である。軸線Ａ１と平行な方向は、「ロータ２の軸方向」又は単に「軸方向」とも称する。径方向は、ロータ２、ステータ３、又はステータコア３１の半径方向であり、軸線Ａ１と直交する方向である。ｘｙ平面は、軸方向と直交する平面である。矢印Ｄ１は、軸線Ａ１を中心とする周方向を示す。ロータ２、ステータ３、又はステータコア３１の周方向を、単に「周方向」とも称する。 Embodiment 1.
An electric motor 1 according to Embodiment 1 will be described below.
In the xyz orthogonal coordinate system shown in each figure, the z-axis direction (z-axis) indicates a direction parallel to the axis A1 of the electric motor 1, and the x-axis direction (x-axis) indicates a direction orthogonal to the z-axis direction. , the y-axis direction (y-axis) indicates a direction orthogonal to both the z-axis direction and the x-axis direction. The axis A<b>1 is the center of rotation of the rotor 2 , that is, the rotation axis of the rotor 2 . The direction parallel to the axis A1 is also referred to as "the axial direction of the rotor 2" or simply "the axial direction". A radial direction is a radial direction of the rotor 2, the stator 3, or the stator core 31, and is a direction perpendicular to the axis A1. The xy plane is a plane perpendicular to the axial direction. An arrow D1 indicates a circumferential direction about the axis A1. The circumferential direction of the rotor 2, stator 3, or stator core 31 is also simply referred to as "circumferential direction".
　図１は、実施の形態１に係る電動機１を概略的に示す断面図である。
　電動機１は、ロータ２と、ステータ３と、ベアリング７ａ，７ｂとを有する。図１に示される例では、電動機１は、さらに、ブラケット８と、電動機１を密閉する防水ゴム９とを有する。電動機１は、例えば、永久磁石同期電動機であるが、これに限定されない。ベアリング７ａ及び７ｂは、ロータ２のシャフト２２を回転自在に支持する。 FIG. 1 is a cross-sectional view schematically showing an electric motor 1 according to Embodiment 1. FIG.
The electric motor 1 has a rotor 2, a stator 3, and bearings 7a and 7b. In the example shown in FIG. 1 , the electric motor 1 further has a bracket 8 and a waterproof rubber 9 that seals the electric motor 1 . The electric motor 1 is, for example, a permanent magnet synchronous motor, but is not limited to this. Bearings 7a and 7b rotatably support shaft 22 of rotor 2 .
　ロータ２は、ステータ３の内側に回転可能に配置されている。ロータ２とステータ３との間には、エアギャップが存在する。ロータ２は、ロータコア２１と、シャフト２２とを有する。ロータ２は、回転軸（すなわち、軸線Ａ１）を中心として回転可能である。ロータ２は、さらに、ロータ２の磁極を形成するための永久磁石を有してもよい。 The rotor 2 is rotatably arranged inside the stator 3 . An air gap exists between the rotor 2 and the stator 3 . The rotor 2 has a rotor core 21 and a shaft 22 . The rotor 2 is rotatable around a rotation axis (that is, axis A1). The rotor 2 may also have permanent magnets for forming the magnetic poles of the rotor 2 .
　図２は、ステータ３を概略的に示す側面図である。
　図３は、ステータ３の構造を概略的に示す側面図である。図３では、樹脂６及び回路基板４が省略されている。
　図４は、ステータ３の構造を概略的に示す正面図である。図４では、樹脂６及び回路基板４が省略されている。
　図５は、ステータ３の構造を概略的に示す正面図である。図５では、樹脂６が省略されている。 FIG. 2 is a side view schematically showing the stator 3. FIG.
FIG. 3 is a side view schematically showing the structure of the stator 3. FIG. In FIG. 3, the resin 6 and the circuit board 4 are omitted.
FIG. 4 is a front view schematically showing the structure of the stator 3. FIG. In FIG. 4, the resin 6 and the circuit board 4 are omitted.
FIG. 5 is a front view schematically showing the structure of the stator 3. FIG. In FIG. 5, the resin 6 is omitted.
　ステータ３は、ステータコア３１と、少なくとも１つの巻線３２（ステータ巻線とも称する）と、少なくとも１つの絶縁部３３と、回路基板４と、回路基板４に接続されたリード線４１と、回路基板４の表面に固定された駆動回路４２と、放熱部材５と、樹脂６（モールド樹脂とも称する）とを有する。例えば、ステータコア３１、巻線３２、絶縁部３３、及び放熱部材５は、樹脂６で一体成形されている。この場合、ステータコア３１、巻線３２、絶縁部３３、放熱部材５、及び樹脂６は、１つの構成要素（モールド固定子とも称する）として一体化されている。 The stator 3 includes a stator core 31, at least one winding 32 (also referred to as stator winding), at least one insulating portion 33, a circuit board 4, lead wires 41 connected to the circuit board 4, and the circuit board. 4, a heat radiating member 5, and resin 6 (also called mold resin). For example, the stator core 31 , the windings 32 , the insulating portion 33 and the heat radiating member 5 are integrally molded with the resin 6 . In this case, the stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, and the resin 6 are integrated as one component (also called molded stator).
　さらに、ステータコア３１、巻線３２、絶縁部３３、放熱部材５、及び回路基板４が樹脂６で一体成形されていてもよい。この場合、ステータコア３１、巻線３２、絶縁部３３、放熱部材５、回路基板４、及び樹脂６は、１つの構成要素（モールド固定子とも称する）として一体化されている。 Further, the stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, and the circuit board 4 may be integrally molded with the resin 6. In this case, the stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, the circuit board 4, and the resin 6 are integrated as one component (also called molded stator).
　さらに、ステータコア３１、巻線３２、絶縁部３３、放熱部材５、回路基板４、及び駆動回路４２が、樹脂６で一体成形されていてもよい。この場合、ステータコア３１、巻線３２、絶縁部３３、放熱部材５、回路基板４、駆動回路４２、及び樹脂６は、１つの構成要素（モールド固定子とも称する）として一体化されている。 Furthermore, the stator core 31 , the windings 32 , the insulating portion 33 , the heat dissipation member 5 , the circuit board 4 , and the drive circuit 42 may be integrally molded with the resin 6 . In this case, the stator core 31, the windings 32, the insulating portion 33, the heat dissipation member 5, the circuit board 4, the drive circuit 42, and the resin 6 are integrated as one component (also called molded stator).
　ステータコア３１は、少なくとも１つのティース３１１を有する。本実施の形態では、ステータコア３１は、複数のティース３１１を有する。例えば、ステータコア３１は、軸方向に積層された複数の電磁鋼板で形成されている。この場合、複数の電磁鋼板の各々は、打ち抜き処理によって、予め定められた形状に形成される。これらの電磁鋼板は、かしめ、溶接、又は接着等によって互いに固定される。 The stator core 31 has at least one tooth 311. In this embodiment, stator core 31 has a plurality of teeth 311 . For example, the stator core 31 is formed of a plurality of magnetic steel sheets laminated in the axial direction. In this case, each of the plurality of electromagnetic steel sheets is formed into a predetermined shape by punching. These electromagnetic steel sheets are fixed to each other by caulking, welding, adhesion, or the like.
　巻線３２は、例えば、マグネットワイヤーである。巻線３２は、絶縁部３３に巻かれている。巻線３２が、絶縁部３３に巻回されることによりコイルが形成される。巻線３２は、端子３２ａ（巻線端子とも称する）と電気的に接続されている。図３に示される例では、巻線３２の端部は、端子３２ａのフック部に引っ掛けられており、ヒュージング又は半田によって端子３２ａに固定されている。端子３２ａは、絶縁部３３に固定されており、回路基板４と電気的に接続されている。 The windings 32 are, for example, magnet wires. The winding 32 is wound around the insulating portion 33 . A coil is formed by winding the wire 32 around the insulating portion 33 . The winding 32 is electrically connected to a terminal 32a (also referred to as a winding terminal). In the example shown in FIG. 3, the end of the winding 32 is hooked on the hook of the terminal 32a and fixed to the terminal 32a by fusing or soldering. The terminal 32 a is fixed to the insulating portion 33 and electrically connected to the circuit board 4 .
　絶縁部３３は、例えば、各ティース３１１に設けられている。例えば、絶縁部３３は、各ティース３１１と組み合わされている。絶縁部３３は、回路基板４を固定する少なくとも１つの固定部３３１を有する。絶縁部３３は、例えば、ポリブチレンテレフタレート（ＰＢＴ）等の熱可塑性樹脂である。絶縁部３３は、ステータコア３１（具体的には、ステータコア３１の各ティース３１１）を電気的に絶縁する。例えば、絶縁部３３は、ステータコア３１と一体に成形される。ただし、予め絶縁部３３を成形し、成形された絶縁部３３をステータコア３１と組み合わせてもよい。 The insulating portion 33 is provided on each tooth 311, for example. For example, the insulating portion 33 is combined with each tooth 311 . The insulating portion 33 has at least one fixing portion 331 for fixing the circuit board 4 . The insulating portion 33 is, for example, thermoplastic resin such as polybutylene terephthalate (PBT). The insulating portion 33 electrically insulates the stator core 31 (specifically, each tooth 311 of the stator core 31). For example, the insulating portion 33 is molded integrally with the stator core 31 . However, the insulating portion 33 may be molded in advance and the molded insulating portion 33 may be combined with the stator core 31 .
　回路基板４は、絶縁部３３の固定部３３１（具体的には、突起３３１ａ）と係合する位置決め穴４３（単に「穴」とも称する）を有する。 The circuit board 4 has a positioning hole 43 (also simply referred to as a "hole") that engages with the fixing portion 331 (specifically, the protrusion 331a) of the insulating portion 33.
　絶縁部３３の固定部３３１は、突起３３１ａと支持部３３１ｂとを有する。突起３３１ａは、回路基板４に形成された位置決め穴４３に挿入されている。この構成により、回路基板４が絶縁部３３に固定される。支持部３３１ｂは、回路基板４を軸方向に支持し、軸方向において回路基板４を位置決めする。回路基板４は、ステータ３の軸方向におけるステータ３の一端側に位置している。 The fixing portion 331 of the insulating portion 33 has a projection 331a and a support portion 331b. The protrusion 331 a is inserted into a positioning hole 43 formed in the circuit board 4 . With this configuration, the circuit board 4 is fixed to the insulating portion 33 . The support portion 331b supports the circuit board 4 in the axial direction and positions the circuit board 4 in the axial direction. The circuit board 4 is positioned on one end side of the stator 3 in the axial direction of the stator 3 .
　駆動回路４２は、ロータ２の回転を制御するための回路である。駆動回路４２は、例えば、駆動素子４２ａ及びホールＩＣ（Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ）４２ｂを含む。 The drive circuit 42 is a circuit for controlling the rotation of the rotor 2. The drive circuit 42 includes, for example, a drive element 42a and a Hall IC (Integrated Circuit) 42b.
　駆動素子４２ａは、例えば、パワートランジスタである。ホールＩＣ４２ｂは、ロータ２の回転位置を検出するために、ロータ２からの磁界を検出する。 The drive element 42a is, for example, a power transistor. Hall IC 42 b detects the magnetic field from rotor 2 in order to detect the rotational position of rotor 2 .
　樹脂６は、ステータコア３１の少なくとも一部を覆っている。例えば、樹脂６は、ステータコア３１の外周面を覆っている。樹脂６は、例えば、バルクモールディングコンパウンド（ＢＭＣ）などの熱硬化性樹脂である。バルクモールディングコンパウンドは、低圧成形を可能にするため、インサート成形に適している。樹脂６としてバルクモールディングコンパウンドを用いた場合、金型を用いて樹脂６の成形を行うときに、回路基板４又はステータコア３１などのインサート物の変形を防止することができ、電動機１の品質を向上させることができる。 The resin 6 covers at least part of the stator core 31. For example, resin 6 covers the outer peripheral surface of stator core 31 . Resin 6 is, for example, a thermosetting resin such as bulk molding compound (BMC). Bulk molding compounds are suitable for insert molding as they allow low pressure molding. When a bulk molding compound is used as the resin 6, deformation of inserts such as the circuit board 4 or the stator core 31 can be prevented when the resin 6 is molded using a mold, and the quality of the electric motor 1 is improved. can be made
　金型を用いて樹脂６の成形を行うとき、例えば、放熱部材５の一部を金型で押さえる。さらに、放熱部材５の一部が、ステータ３の外部に露出するように、樹脂６の材料を金型内に注入する。この工程により、放熱部材５の一部を、ステータ３の外部に露出させることができる。 When molding the resin 6 using a mold, for example, a part of the heat radiating member 5 is pressed by the mold. Furthermore, the material of the resin 6 is injected into the mold so that a part of the heat radiating member 5 is exposed to the outside of the stator 3 . Through this process, part of the heat radiating member 5 can be exposed to the outside of the stator 3 .
　樹脂６は、ポリフェニレンスルファイド（ＰＰＳ）などの熱可塑性樹脂でもよい。ＰＰＳは、ＢＭＣに比べて熱伝導率が向上するので、巻線３２で発生した熱が放熱部材５に伝達されやすい。 The resin 6 may be a thermoplastic resin such as polyphenylene sulfide (PPS). Since PPS has higher thermal conductivity than BMC, the heat generated in the windings 32 is easily transferred to the heat radiating member 5 .
　放熱部材５は、ステータコア３１の外周面に対向している。放熱部材５は、ステータコア３１の周方向に連続的に延在している。放熱部材５は、ステータコア３１の外周面の全てを覆っていてもよい。放熱部材５は、例えば、アルミニウムなどの金属材料で作られている。例えば、放熱部材５は、樹脂６によってステータコア３１の外周面に対向するように固定されている。この場合、放熱部材５の一部が樹脂６と嵌合していてもよい。放熱部材５の一部が樹脂６と嵌合しているとき、放熱部材５が、ステータコア３１の外周面に対向するようにしっかり固定される。放熱部材５の少なくとも一部は、ステータ３の外部に露出している。この構成により、巻線３２で発生した熱が、ステータ３の外部に効率よく放出される。 The heat dissipation member 5 faces the outer peripheral surface of the stator core 31 . The heat dissipation member 5 extends continuously in the circumferential direction of the stator core 31 . The heat dissipation member 5 may cover the entire outer peripheral surface of the stator core 31 . The heat dissipation member 5 is made of, for example, a metal material such as aluminum. For example, the heat dissipation member 5 is fixed by the resin 6 so as to face the outer peripheral surface of the stator core 31 . In this case, part of the heat dissipation member 5 may be fitted with the resin 6 . When part of the heat radiating member 5 is fitted with the resin 6 , the heat radiating member 5 is firmly fixed so as to face the outer peripheral surface of the stator core 31 . At least part of the heat dissipation member 5 is exposed outside the stator 3 . With this configuration, the heat generated by the windings 32 is efficiently released to the outside of the stator 3 .
　放熱部材５は、ステータコア３１の外周面に直接設けられていてもよい。すなわち、放熱部材５は、ステータコア３１の外周面に固定されていてもよい。この構成により、巻線３２で発生した熱が、放熱部材５に直接に伝達され、ステータ３の外部にさらに効率よく放出される。 The heat dissipation member 5 may be directly provided on the outer peripheral surface of the stator core 31. That is, the heat dissipation member 5 may be fixed to the outer peripheral surface of the stator core 31 . With this configuration, the heat generated by the windings 32 is directly transmitted to the heat radiating member 5 and radiated to the outside of the stator 3 more efficiently.
　ステータコア３１、巻線３２、及び絶縁部３３が樹脂６で一体成形されていてもよい。この場合、ステータコア３１、巻線３２、絶縁部３３、及び樹脂６は、１つの構成要素（モールド固定子とも称する）として一体化されている。この場合、放熱部材５は、例えば、圧入、焼き嵌め、又はねじで、ステータコア３１の外周面に対向するように樹脂６に固定されている。この構成により、巻線３２で発生した熱が、樹脂６を通して放熱部材５に伝達され、ステータ３の外部に効率よく放出される。 The stator core 31, the windings 32, and the insulating portion 33 may be integrally molded with the resin 6. In this case, the stator core 31, the windings 32, the insulating portion 33, and the resin 6 are integrated as one component (also called molded stator). In this case, the heat radiating member 5 is fixed to the resin 6 so as to face the outer peripheral surface of the stator core 31 by press fitting, shrink fitting, or screws, for example. With this configuration, the heat generated by the windings 32 is transmitted to the heat radiating member 5 through the resin 6 and efficiently radiated to the outside of the stator 3 .
変形例１．
　放熱部材５の他の例を説明する。
　図６は、放熱部材５の他の例としての放熱部材５ａを有するステータ３を概略的に示す側面図である。
　図７は、図６に示される放熱部材５ａを有するステータ３を概略的に示す側面図である。図７では、樹脂６及び回路基板４が省略されている。
　図８は、図６に示される放熱部材５ａを有するステータ３を概略的に示す正面図である。図８では、樹脂６及び回路基板４が省略されている。
　実施の形態１で説明された放熱部材５の代わりに、変形例１で説明される放熱部材５ａを実施の形態１で説明されたステータ３に適用することができる。 Modification 1.
Another example of the heat dissipation member 5 will be described.
FIG. 6 is a side view schematically showing a stator 3 having a heat radiating member 5a as another example of the heat radiating member 5. As shown in FIG.
FIG. 7 is a side view schematically showing the stator 3 having the heat dissipation member 5a shown in FIG. In FIG. 7, the resin 6 and the circuit board 4 are omitted.
FIG. 8 is a front view schematically showing the stator 3 having the heat radiating member 5a shown in FIG. In FIG. 8, the resin 6 and the circuit board 4 are omitted.
Instead of the heat radiating member 5 described in the first embodiment, the heat radiating member 5a described in the modification 1 can be applied to the stator 3 described in the first embodiment.
　変形例１における放熱部材５ａは、ベース部５１と、ベース部５１から突き出ている少なくとも１つの突起部５２とを有する。例えば、ベース部５１は、樹脂６によって支持されている。ベース部５１が樹脂６によって支持されているので、放熱部材５ａが、ステータコア３１の外周面に対向するようにしっかり固定される。ベース部５１は、樹脂６と嵌合していてもよい。 The heat dissipating member 5a in Modification 1 has a base portion 51 and at least one protruding portion 52 protruding from the base portion 51. For example, the base portion 51 is supported by the resin 6 . Since the base portion 51 is supported by the resin 6 , the heat radiating member 5 a is firmly fixed so as to face the outer peripheral surface of the stator core 31 . The base portion 51 may be fitted with the resin 6 .
　図６、図７、及び図８に示される例では、放熱部材５ａ（具体的には、ベース部５１）は、ステータコア３１の周方向に連続的に延在している。放熱部材５ａは、ステータコア３１の外周面の全てを覆っていてもよい。例えば、ベース部５１がステータコア３１の外周面の全てを覆っていてもよい。 In the examples shown in FIGS. 6, 7, and 8, the heat dissipation member 5a (specifically, the base portion 51) extends continuously in the circumferential direction of the stator core 31. The heat dissipation member 5 a may cover the entire outer peripheral surface of the stator core 31 . For example, the base portion 51 may cover the entire outer peripheral surface of the stator core 31 .
　放熱部材５ａは、複数の突起部５２を有していてもよい。ティース３１１の数と突起部５２の数は同一である。この場合、各突起部５２は、ティース３１１に対向している。すなわち、ティース３１１が延在する方向に見たとき、突起部５２の位置は、ティース３１１の少なくとも一部に重なっている。この構成により、巻線３２で発生した熱が、各突起部５２からステータ３の外部に効率よく放出される。 The heat dissipation member 5a may have a plurality of protrusions 52. The number of teeth 311 and the number of protrusions 52 are the same. In this case, each protrusion 52 faces the teeth 311 . That is, when viewed in the direction in which teeth 311 extend, projections 52 overlap at least a portion of teeth 311 . With this configuration, the heat generated in the windings 32 is efficiently released from the protrusions 52 to the outside of the stator 3 .
　巻線３２は、集中巻で各ティース３１１に巻かれている。この場合、巻線３２によって形成されるコイルの数は、ティース３１１の数と同一である。したがって、変形例１では、ティース３１１の数、コイルの数、及び突起部５２の数は同一である。 The winding 32 is wound around each tooth 311 by concentrated winding. In this case, the number of coils formed by windings 32 is the same as the number of teeth 311 . Therefore, in Modification 1, the number of teeth 311, the number of coils, and the number of protrusions 52 are the same.
　各突起部５２は、例えば、径方向に突き出ている。各突起部５２は、ステータ３の外部に露出している。各突起部５２がステータ３の外部に露出しているので、巻線３２で発生した熱が、各突起部５２からステータ３の外部に効率よく放出される。ベース部５１の少なくとも一部が、ステータ３の外部に露出していてもよい。この場合も、巻線３２で発生した熱が、ベース部５１からステータ３の外部に効率よく放出される。ベース部５１及び各突起部５２が、ステータ３の外部に露出していてもよい。この場合も、巻線３２で発生した熱が、ベース部５１及び各突起部５２からステータ３の外部に効率よく放出される。 Each protrusion 52 protrudes radially, for example. Each protrusion 52 is exposed to the outside of the stator 3 . Since each protrusion 52 is exposed to the outside of the stator 3 , the heat generated by the windings 32 is efficiently released from each protrusion 52 to the outside of the stator 3 . At least part of the base portion 51 may be exposed to the outside of the stator 3 . Also in this case, the heat generated by the windings 32 is efficiently released from the base portion 51 to the outside of the stator 3 . The base portion 51 and each projection portion 52 may be exposed to the outside of the stator 3 . Also in this case, the heat generated by the windings 32 is efficiently released to the outside of the stator 3 from the base portion 51 and each projection portion 52 .
　図６に示されるように、ステータコア３１の周方向において隣接する２つの突起部５２の間に樹脂６が設けられていてもよい。この場合、ベース部５１が樹脂６と嵌合しており、各突起部５２がステータ３の外部に露出している。この構成により、放熱部材５ａが、ステータコア３１の外周面に対向するようにしっかり固定され、巻線３２で発生した熱が、各突起部５２からステータ３の外部に効率よく放出される。 As shown in FIG. 6, resin 6 may be provided between two protrusions 52 adjacent in the circumferential direction of stator core 31 . In this case, the base portion 51 is fitted with the resin 6 and each projection portion 52 is exposed to the outside of the stator 3 . With this configuration, the heat radiating member 5 a is firmly fixed so as to face the outer peripheral surface of the stator core 31 , and the heat generated in the windings 32 is efficiently radiated to the outside of the stator 3 through the protrusions 52 .
変形例２．
　放熱部材５のさらに他の例を説明する。
　図９は、放熱部材５のさらに他の例としての放熱部材５ｂを有するステータ３を示す側面図である。
　図１０は、図９に示される放熱部材５ｂを有するステータ３を概略的に示す側面図である。図１０では、樹脂６及び回路基板４が省略されている。
　図１１は、図９に示される放熱部材５ｂを有するステータ３を概略的に示す正面図である。図１１では、樹脂６及び回路基板４が省略されている。
　実施の形態１で説明された放熱部材５の代わりに、変形例２で説明される放熱部材５ｂを実施の形態１で説明されたステータ３に適用することができる。 Modification 2.
Still another example of the heat dissipation member 5 will be described.
FIG. 9 is a side view showing a stator 3 having a heat radiating member 5b as still another example of the heat radiating member 5. As shown in FIG.
FIG. 10 is a side view schematically showing the stator 3 having the heat radiating member 5b shown in FIG. In FIG. 10, the resin 6 and the circuit board 4 are omitted.
FIG. 11 is a front view schematically showing the stator 3 having the heat radiating member 5b shown in FIG. In FIG. 11, the resin 6 and the circuit board 4 are omitted.
Instead of the heat radiating member 5 described in the first embodiment, the heat radiating member 5b described in the modification 2 can be applied to the stator 3 described in the first embodiment.
　変形例２における放熱部材５ｂは、ベース部５１と、ベース部５１から突き出ている少なくとも１つの突起部５２と、突起部５２から突き出ている少なくとも１つのフィン５３とを有する。ベース部５１は、樹脂６によって支持されている。ベース部５１が樹脂６によって支持されているので、放熱部材５ｂが、ステータコア３１の外周面に対向するようにしっかり固定される。ベース部５１は、樹脂６と嵌合していてもよい。 The heat dissipating member 5 b in Modification 2 has a base portion 51 , at least one projecting portion 52 projecting from the base portion 51 , and at least one fin 53 projecting from the projecting portion 52 . The base portion 51 is supported by the resin 6 . Since the base portion 51 is supported by the resin 6 , the heat dissipation member 5 b is firmly fixed so as to face the outer peripheral surface of the stator core 31 . The base portion 51 may be fitted with the resin 6 .
　図９、図１０、及び図１１に示される例では、放熱部材５ｂ（具体的には、ベース部５１）は、ステータコア３１の周方向に連続的に延在している。放熱部材５ｂは、ステータコア３１の外周面の全てを覆っていてもよい。例えば、ベース部５１がステータコア３１の外周面の全てを覆っていてもよい。 In the examples shown in FIGS. 9, 10, and 11, the heat dissipation member 5b (specifically, the base portion 51) extends continuously in the circumferential direction of the stator core 31. The heat dissipation member 5 b may cover the entire outer peripheral surface of the stator core 31 . For example, the base portion 51 may cover the entire outer peripheral surface of the stator core 31 .
　各フィン５３は、例えば、径方向に突き出ている。各フィン５３は、例えば、板でもよく、先細の形状を持っていてもよい。各フィン５３は、ステータ３の外部に露出している。各フィン５３がステータ３の外部に露出しているので、巻線３２で発生した熱が、各フィン５３からステータ３の外部に効率よく放出される。 Each fin 53 protrudes radially, for example. Each fin 53 may be, for example, a plate and may have a tapered shape. Each fin 53 is exposed outside the stator 3 . Since each fin 53 is exposed to the outside of the stator 3 , the heat generated by the windings 32 is efficiently released from each fin 53 to the outside of the stator 3 .
　放熱部材５ｂは、複数のフィン５３を有していてもよい。この場合、各フィン５３は、ティース３１１に対向している。すなわち、ティース３１１が延在する方向に見たとき、フィン５３の位置は、ティース３１１の少なくとも一部に重なっている。この構成により、巻線３２で発生した熱が、各フィン５３からステータ３の外部に効率よく放出される。 The heat dissipation member 5b may have a plurality of fins 53. In this case, each fin 53 faces teeth 311 . That is, when viewed in the direction in which teeth 311 extend, fins 53 overlap at least a portion of teeth 311 . With this configuration, the heat generated by the windings 32 is efficiently released from the fins 53 to the outside of the stator 3 .
　図９に示されるように、ステータコア３１の周方向において隣接する２つの突起部５２の間に樹脂６が設けられていてもよい。この場合、ベース部５１が樹脂６によって支持されており、各突起部５２がステータ３の外部に露出している。この構成により、放熱部材５ｂが、ステータコア３１の外周面に対向するようにしっかり固定され、巻線３２で発生した熱が、各突起部５２及び各フィン５３からステータ３の外部に効率よく放出される。 As shown in FIG. 9, the resin 6 may be provided between two protrusions 52 that are adjacent in the circumferential direction of the stator core 31 . In this case, the base portion 51 is supported by the resin 6 and each protrusion 52 is exposed to the outside of the stator 3 . With this configuration, the heat radiating member 5b is firmly fixed so as to face the outer peripheral surface of the stator core 31, and the heat generated in the windings 32 is efficiently released to the outside of the stator 3 through the projections 52 and the fins 53. be.
　放熱部材５ｂが突起部５２を有さずに、各フィン５３がベース部５１から突き出ていてもよい。この場合、ステータコア３１の周方向において隣接する２つのフィン５３の間に樹脂６が設けられていてもよい。この場合、ベース部５１が樹脂６によって支持されており、各フィン５３がステータ３の外部に露出している。この構成により、放熱部材５ｂが、ステータコア３１の外周面に対向するようにしっかり固定され、巻線３２で発生した熱が、各フィン５３からステータ３の外部に効率よく放出される。 Each fin 53 may protrude from the base portion 51 without the heat radiating member 5b having the projecting portion 52. In this case, resin 6 may be provided between two fins 53 adjacent in the circumferential direction of stator core 31 . In this case, the base portion 51 is supported by the resin 6 and each fin 53 is exposed outside the stator 3 . With this configuration, the heat radiating member 5 b is firmly fixed so as to face the outer peripheral surface of the stator core 31 , and the heat generated by the windings 32 is efficiently radiated from the fins 53 to the outside of the stator 3 .
〈本実施の形態の利点〉
　電動機１において、巻線３２で発生した熱は、絶縁部３３を通過し、ステータコア３１に伝達される。本実施の形態によれば、放熱部材５がステータコア３１の外周面に対向しているので、巻線３２で発生した熱を、ステータ３の外部に効率よく放出することができる。 <Advantages of this embodiment>
In the electric motor 1 , the heat generated by the windings 32 passes through the insulating portion 33 and is transferred to the stator core 31 . According to the present embodiment, heat radiation member 5 faces the outer peripheral surface of stator core 31 , so heat generated in windings 32 can be efficiently released to the outside of stator 3 .
　ステータコア３１、巻線３２、絶縁部３３、及び放熱部材５が樹脂６で一体成形されている場合、ステータコア３１と樹脂６との間の熱抵抗を低減することができる。さらに、ステータコア３１、巻線３２、絶縁部３３、及び放熱部材５が樹脂６で一体成形されている場合、放熱部材５の取り付けのための部品及び製造工程を削減することができる。 When the stator core 31, the windings 32, the insulating portion 33, and the heat dissipation member 5 are integrally molded with the resin 6, the thermal resistance between the stator core 31 and the resin 6 can be reduced. Furthermore, when the stator core 31, the windings 32, the insulating portion 33, and the heat dissipation member 5 are integrally molded with the resin 6, the number of parts and the manufacturing process for attaching the heat dissipation member 5 can be reduced.
　さらに、ステータコア３１、巻線３２、絶縁部３３、放熱部材５、及び回路基板４が樹脂６で一体成形されている場合、巻線３２で発生した熱が放熱部材５を通して径方向に放出されるので、回路基板４又は回路基板４に固定された駆動回路４２の温度上昇を防ぐことができる。 Furthermore, when the stator core 31, the windings 32, the insulating portion 33, the heat radiation member 5, and the circuit board 4 are integrally molded with the resin 6, the heat generated by the windings 32 is radiated radially through the heat radiation member 5. Therefore, the temperature rise of the circuit board 4 or the drive circuit 42 fixed to the circuit board 4 can be prevented.
　本実施の形態によれば、放熱部材５がステータコア３１の外周面に対向しているので、巻線３２で発生した熱を径方向に放出することができる。したがって、回路基板４がステータ３の軸方向におけるステータ３の一端側に位置している場合、巻線３２で発生した熱が回路基板４に伝達されることを防止することができる。その結果、巻線３２で発生した熱による回路基板４又は回路基板４に固定された駆動回路４２の温度上昇を防止することができる。 According to this embodiment, the heat dissipation member 5 faces the outer peripheral surface of the stator core 31, so heat generated in the windings 32 can be dissipated in the radial direction. Therefore, when the circuit board 4 is located on one end side of the stator 3 in the axial direction of the stator 3 , it is possible to prevent the heat generated by the windings 32 from being transmitted to the circuit board 4 . As a result, the temperature rise of the circuit board 4 or the drive circuit 42 fixed to the circuit board 4 due to the heat generated by the windings 32 can be prevented.
　放熱部材５は、ステータコア３１の外周面に対向しているので、放熱部材５をステータ３の軸方向におけるステータ３の一端側に必ずしも設ける必要はない。そのため、ステータ３のコストを低減することができる。 Since the heat dissipation member 5 faces the outer peripheral surface of the stator core 31, it is not always necessary to provide the heat dissipation member 5 on one end side of the stator 3 in the axial direction of the stator 3. Therefore, the cost of the stator 3 can be reduced.
　放熱部材５ａがベース部５１と、ベース部５１から突き出ている少なくとも１つの突起部５２とを有する場合、ステータ３の外部に露出される放熱部材５ａの表面積を増加させることができる。その結果、巻線３２で発生した熱を、ステータ３の外部に効率よく放出することができる。 When the heat radiating member 5a has the base portion 51 and at least one projecting portion 52 protruding from the base portion 51, the surface area of the heat radiating member 5a exposed to the outside of the stator 3 can be increased. As a result, heat generated by the windings 32 can be efficiently released to the outside of the stator 3 .
　ティース３１１の数と突起部５２の数が同一である場合、偏りのない放熱経路をステータ３に設けることができる。その結果、ステータ３における熱の滞留を防ぐことができる。 When the number of teeth 311 and the number of protrusions 52 are the same, the stator 3 can be provided with an even heat dissipation path. As a result, heat retention in the stator 3 can be prevented.
　ティース３１１が延在する方向に見たとき、突起部５２の位置がティース３１１の少なくとも一部に重なっている場合、巻線３２で発生した熱を、各突起部５２からステータ３の外部に効率よく放出することができる。 When the protrusions 52 overlap at least a part of the teeth 311 when viewed in the direction in which the teeth 311 extend, the heat generated in the windings 32 is efficiently transferred from the protrusions 52 to the outside of the stator 3 . can be released well.
　ステータコア３１の周方向において隣接する２つの突起部５２の間に樹脂６が設けられている場合、放熱部材５ａを、ステータコア３１の外周面に対向するようにしっかり固定することができる。その結果、電動機１の作動中において、電動機１における振動及び騒音を低減することができる。 When the resin 6 is provided between two protrusions 52 adjacent in the circumferential direction of the stator core 31, the heat dissipation member 5a can be firmly fixed so as to face the outer peripheral surface of the stator core 31. As a result, vibration and noise in the electric motor 1 can be reduced while the electric motor 1 is in operation.
　放熱部材５の少なくとも一部がステータ３の外部に露出している場合、放熱部材５が外気にふれる。その結果、巻線３２で発生した熱を、ステータ３の外部に効率よく放出することができる。 When at least part of the heat radiating member 5 is exposed outside the stator 3, the heat radiating member 5 is exposed to the outside air. As a result, heat generated by the windings 32 can be efficiently released to the outside of the stator 3 .
　放熱部材５ｂがステータ３の外部に露出しているフィン５３を有する場合、ステータ３の外部に露出される放熱部材５ｂの表面積を増加させることができる。フィン５３が外気にふれるので、巻線３２で発生した熱を、フィン５３からステータ３の外部に効率よく放出することができる。 When the heat radiating member 5b has fins 53 exposed to the outside of the stator 3, the surface area of the heat radiating member 5b exposed to the outside of the stator 3 can be increased. Since the fins 53 are exposed to the outside air, the heat generated by the windings 32 can be efficiently released from the fins 53 to the outside of the stator 3 .
　放熱部材５がステータコア３１の周方向に連続的に延在している場合、放熱部材５がステータコア３１の外周面に対向する面積が増加する。その結果、巻線３２で発生した熱を、ステータ３の外部により効率的に放出することができる。 When the heat radiating member 5 extends continuously in the circumferential direction of the stator core 31, the area of the heat radiating member 5 facing the outer peripheral surface of the stator core 31 increases. As a result, the heat generated by the windings 32 can be more efficiently released to the outside of the stator 3.
　放熱部材５がステータコア３１の外周面の全てを覆っている場合、放熱部材５がステータコア３１の外周面に対向する面積がさらに増加する。その結果、巻線３２で発生した熱を、ステータ３の外部により効率的に放出することができる。 When the heat radiating member 5 covers the entire outer peripheral surface of the stator core 31, the area of the heat radiating member 5 facing the outer peripheral surface of the stator core 31 further increases. As a result, the heat generated by the windings 32 can be more efficiently released to the outside of the stator 3.
実施の形態２．
　実施の形態２に係る空気調和機１０（冷凍空調装置又は冷凍サイクル装置とも称する）について説明する。
　図１２は、実施の形態２に係る空気調和機１０の構成を概略的に示す図である。 Embodiment 2.
An air conditioner 10 (also referred to as a refrigeration air conditioner or a refrigeration cycle device) according to Embodiment 2 will be described.
FIG. 12 is a diagram schematically showing the configuration of air conditioner 10 according to Embodiment 2. As shown in FIG.
　実施の形態２に係る空気調和機１０は、送風機（第１の送風機とも称する）としての室内機１１と、室内機１１に接続される送風機（第２の送風機とも称する）としての室外機１３とを有する。 An air conditioner 10 according to Embodiment 2 includes an indoor unit 11 as a fan (also referred to as a first fan) and an outdoor unit 13 as a fan (also referred to as a second fan) connected to the indoor unit 11. have
　本実施の形態では、空気調和機１０は、室内機１１と、冷媒配管１２と、室外機１３とを有する。例えば、室外機１３は、冷媒配管１２を通して室内機１１に接続される。 In this embodiment, the air conditioner 10 has an indoor unit 11, a refrigerant pipe 12, and an outdoor unit 13. For example, the outdoor unit 13 is connected to the indoor unit 11 through the refrigerant pipe 12 .
　室内機１１は、電動機１１ａ（例えば、実施の形態１に係る電動機１）と、電動機１１ａによって駆動されることにより、送風する送風部１１ｂと、電動機１１ａ及び送風部１１ｂを覆うハウジング１１ｃとを有する。送風部１１ｂは、例えば、電動機１１ａによって駆動される羽根１１ｄを有する。例えば、羽根１１ｄは、電動機１１ａのシャフトに固定されており、気流を生成する。 The indoor unit 11 has an electric motor 11a (for example, the electric motor 1 according to Embodiment 1), a blower section 11b that blows air by being driven by the electric motor 11a, and a housing 11c that covers the electric motor 11a and the blower section 11b. . The air blower 11b has, for example, blades 11d driven by an electric motor 11a. For example, blades 11d are fixed to the shaft of electric motor 11a and generate airflow.
　室外機１３は、電動機１３ａ（例えば、実施の形態１に係る電動機１）と、送風部１３ｂと、圧縮機１４と、熱交換器（図示しない）と、送風部１３ｂ、圧縮機１４、及び熱交換器を覆うハウジング１３ｃとを有する。送風部１３ｂは、電動機１３ａによって駆動されることにより、送風する。送風部１３ｂは、例えば、電動機１３ａによって駆動される羽根１３ｄを有する。例えば、羽根１３ｄは、電動機１３ａのシャフトに固定されており、気流を生成する。圧縮機１４は、電動機１４ａ（例えば、実施の形態１に係る電動機１）と、電動機１４ａによって駆動される圧縮機構１４ｂ（例えば、冷媒回路）と、電動機１４ａ及び圧縮機構１４ｂを覆うハウジング１４ｃとを有する。 The outdoor unit 13 includes an electric motor 13a (for example, the electric motor 1 according to Embodiment 1), an air blower 13b, a compressor 14, a heat exchanger (not shown), an air blower 13b, a compressor 14, and a heat exchanger. and a housing 13c covering the exchanger. The air blower 13b blows air by being driven by the electric motor 13a. The air blower 13b has, for example, blades 13d driven by an electric motor 13a. For example, the blades 13d are fixed to the shaft of the electric motor 13a and generate airflow. The compressor 14 includes an electric motor 14a (for example, the electric motor 1 according to Embodiment 1), a compression mechanism 14b (for example, a refrigerant circuit) driven by the electric motor 14a, and a housing 14c that covers the electric motor 14a and the compression mechanism 14b. have.
　空気調和機１０において、室内機１１及び室外機１３の少なくとも１つは、実施の形態１で説明した電動機１を有する。すなわち、室内機１１、室外機１３、又は室内機１１及び室外機１３の各々は、実施の形態１で説明した電動機１を有する。具体的には、送風部の駆動源として、電動機１１ａ及び１３ａの少なくとも一方に、実施の形態１で説明した電動機１が適用される。すなわち、室内機１１、室外機１３、又は室内機１１及び室外機１３の各々に、実施の形態１で説明した電動機１が適用される。圧縮機１４の電動機１４ａに、実施の形態１で説明した電動機１を適用してもよい。 In the air conditioner 10, at least one of the indoor unit 11 and the outdoor unit 13 has the electric motor 1 described in the first embodiment. That is, each of the indoor unit 11, the outdoor unit 13, or the indoor unit 11 and the outdoor unit 13 has the electric motor 1 described in the first embodiment. Specifically, the electric motor 1 described in the first embodiment is applied to at least one of the electric motors 11a and 13a as the driving source of the air blower. That is, the electric motor 1 described in Embodiment 1 is applied to each of the indoor unit 11 and the outdoor unit 13 or the indoor unit 11 and the outdoor unit 13 . The electric motor 1 described in the first embodiment may be applied to the electric motor 14 a of the compressor 14 .
　空気調和機１０は、例えば、室内機１１から冷たい空気を送風する冷房運転、温かい空気を送風する暖房運転等の空調を行うことができる。室内機１１において、電動機１１ａは、送風部１１ｂを駆動するための駆動源である。送風部１１ｂは、調整された空気を送風することができる。 The air conditioner 10 can perform air conditioning, for example, a cooling operation in which cool air is blown from the indoor unit 11 and a heating operation in which warm air is blown. In the indoor unit 11, the electric motor 11a is a drive source for driving the air blower 11b. The air blower 11b can blow the adjusted air.
　室内機１１において、電動機１１ａは、例えば、ねじによって室内機１１のハウジング１１ｃに固定されている。室外機１３において、電動機１３ａは、例えば、ねじによって室外機１３のハウジング１３ｃに固定されている。 In the indoor unit 11, the electric motor 11a is fixed to the housing 11c of the indoor unit 11 with screws, for example. In the outdoor unit 13, the electric motor 13a is fixed to the housing 13c of the outdoor unit 13 with screws, for example.
　実施の形態２に係る空気調和機１０では、電動機１１ａ及び１３ａの少なくとも一方に、実施の形態１で説明した電動機１が適用されるので、実施の形態１で説明した利点と同じ利点を得ることができる。その結果、空気調和機１０の効率を高めることができる。 In the air conditioner 10 according to Embodiment 2, since the electric motor 1 described in Embodiment 1 is applied to at least one of the electric motors 11a and 13a, the same advantages as those described in Embodiment 1 can be obtained. can be done. As a result, the efficiency of the air conditioner 10 can be improved.
　さらに、送風機（例えば、室内機１１）の駆動源として、実施の形態１に係る電動機１が用いられる場合、実施の形態１で説明した利点と同じ利点を得ることができる。その結果、送風機の効率の低下を防ぐことができる。実施の形態１に係る電動機１と電動機１によって駆動される羽根（例えば、羽根１１ｄ又は１３ｄ）とを有する送風機は、送風する装置として単独で用いることができる。この送風機は、空気調和機１０以外の機器にも適用可能である。 Furthermore, when the electric motor 1 according to Embodiment 1 is used as the drive source for the blower (for example, the indoor unit 11), the same advantages as those described in Embodiment 1 can be obtained. As a result, it is possible to prevent the efficiency of the blower from decreasing. The blower having the electric motor 1 according to Embodiment 1 and the blades (for example, the blades 11d or 13d) driven by the electric motor 1 can be used alone as a device for blowing air. This blower can also be applied to devices other than the air conditioner 10 .
　さらに、圧縮機１４の駆動源として、実施の形態１に係る電動機１が用いられる場合、実施の形態１で説明した利点と同じ利点を得ることができる。その結果、圧縮機１４の効率を高めることができる。 Furthermore, when the electric motor 1 according to Embodiment 1 is used as the drive source for the compressor 14, the same advantages as those described in Embodiment 1 can be obtained. As a result, the efficiency of the compressor 14 can be improved.
　実施の形態１で説明した電動機１は、空気調和機１０以外に、換気扇、家電機器、又は工作機など、駆動源を有する機器に搭載できる。 The electric motor 1 described in Embodiment 1 can be installed in equipment having a drive source, such as a ventilation fan, a home appliance, or a machine tool, in addition to the air conditioner 10 .
　以上に説明した各実施の形態における特徴及び各変形例における特徴は、互いに組み合わせることができる。 The features of each embodiment and the features of each modification described above can be combined with each other.
　１，１１ａ，１３ａ，１４ａ　電動機、　２　ロータ、　３　ステータ、　４　回路基板、　５，５ａ，５ｂ　放熱部材、　６　樹脂、　７ａ，７ｂ　ベアリング、　８　ブラケット、　９　防水ゴム、　１０　空気調和機、　１１　室内機、　１２　冷媒配管、　１３　室外機、　３１　ステータコア、　３２　巻線、　３３　絶縁部、　４２　駆動回路、　５１　ベース部、　５２　突起部、　５３　フィン。 1, 11a, 13a, 14a electric motor, 2 rotor, 3 stator, 4 circuit board, 5, 5a, 5b heat dissipation member, 6 resin, 7a, 7b bearing, 8 bracket, 9 waterproof rubber, 10 air conditioner, 11 indoor unit , 12 refrigerant pipe, 13 outdoor unit, 31 stator core, 32 winding, 33 insulating part, 42 drive circuit, 51 base part, 52 projection part, 53 fin.

Claims (14)

  1. 　ティースを有するステータコアと、
    　前記ティースに設けられた絶縁部と、
    　前記絶縁部に巻かれた巻線と、
    　前記ステータコアの外周面に対向する放熱部材と、
    　前記ステータコアの少なくとも一部を覆っている樹脂と
    　を備えたステータ。     a stator core having teeth;
    an insulating portion provided on the teeth;
    a winding wound around the insulation;
    a heat radiating member facing the outer peripheral surface of the stator core;
    and a resin covering at least part of the stator core.
  2. 　前記ステータコア、前記絶縁部、前記巻線、及び前記放熱部材は、前記樹脂で一体成形されている請求項１に記載のステータ。 The stator according to claim 1, wherein the stator core, the insulating portion, the windings, and the heat radiation member are integrally molded with the resin.
  3. 　回路基板をさらに備え、
    　前記ステータコア、前記絶縁部、前記巻線、前記放熱部材、及び前記回路基板は、前記樹脂で一体成形されている請求項１に記載のステータ。     further comprising a circuit board,
    2. The stator according to claim 1, wherein the stator core, the insulating portion, the windings, the heat dissipation member, and the circuit board are integrally molded with the resin.
  4. 　前記回路基板は、前記ステータの軸方向における前記ステータの一端側に位置している請求項３に記載のステータ。 The stator according to claim 3, wherein the circuit board is located on one end side of the stator in the axial direction of the stator.
  5. 　前記放熱部材は、ベース部と、前記ベース部から突き出ている少なくとも１つの突起部とを有する請求項１から４のいずれか１項に記載のステータ。 The stator according to any one of claims 1 to 4, wherein the heat dissipation member has a base portion and at least one projection projecting from the base portion.
  6. 　前記ティースの数と前記突起部の数は同一である請求項５に記載のステータ。 The stator according to claim 5, wherein the number of said teeth and the number of said protrusions are the same.
  7. 　前記ステータコアの周方向において隣接する２つの前記突起部の間に前記樹脂が設けられている請求項５又は６に記載のステータ。 The stator according to claim 5 or 6, wherein the resin is provided between two of the protrusions that are adjacent in the circumferential direction of the stator core.
  8. 　前記ティースが延在する方向に見たとき、前記突起部の位置は、前記ティースの少なくとも一部に重なっている請求項５から７のいずれか１項に記載のステータ。 The stator according to any one of claims 5 to 7, wherein the projection overlaps at least a part of the teeth when viewed in the direction in which the teeth extend.
  9. 　前記放熱部材の少なくとも一部は、前記ステータの外部に露出している請求項１から８のいずれか１項に記載のステータ。 The stator according to any one of claims 1 to 8, wherein at least part of said heat radiating member is exposed to the outside of said stator.
  10. 　前記放熱部材は、前記ステータの外部に露出しているフィンを有する請求項１から４のいずれか１項に記載のステータ。 The stator according to any one of claims 1 to 4, wherein the heat radiation member has fins exposed to the outside of the stator.
  11. 　前記放熱部材は、前記ステータコアの周方向に連続的に延在している請求項１から１０のいずれか１項に記載のステータ。 The stator according to any one of claims 1 to 10, wherein the heat dissipation member extends continuously in the circumferential direction of the stator core.
  12. 　前記放熱部材は、前記ステータコアの前記外周面の全てを覆っている請求項１１に記載のステータ。 The stator according to claim 11, wherein the heat radiating member covers the entire outer peripheral surface of the stator core.
  13. 　請求項１から１２のいずれか１項に記載のステータと、
    　前記ステータの内側に配置されたロータと
    　を備えた電動機。     A stator according to any one of claims 1 to 12;
    and a rotor arranged inside the stator.
  14. 　室内機と、
    　前記室内機に接続される室外機と
    　を備え、
    　前記室内機、前記室外機、又は前記室内機及び前記室外機の各々は、請求項１３に記載の電動機を有する
    　空気調和機。     indoor unit and
    and an outdoor unit connected to the indoor unit,
    Each of the indoor unit, the outdoor unit, or the indoor unit and the outdoor unit has the electric motor according to claim 13. An air conditioner.
PCT/JP2021/006971 2021-02-25 2021-02-25 Stator, electric motor, and air conditioner WO2022180708A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08140300A (en) * 1994-11-07 1996-05-31 Asmo Co Ltd Motor with radiation fins
JPH099575A (en) * 1995-06-19 1997-01-10 Hitachi Ltd Rotary electric machine
JP2006054963A (en) * 2004-08-12 2006-02-23 Minebea-Matsushita Motor Corp Stepping motor
JP2011244976A (en) * 2010-05-26 2011-12-08 Panasonic Corp Washing machine
JP2015115593A (en) * 2013-12-16 2015-06-22 三菱電機株式会社 Motor, air conditioner, and method of manufacturing motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08140300A (en) * 1994-11-07 1996-05-31 Asmo Co Ltd Motor with radiation fins
JPH099575A (en) * 1995-06-19 1997-01-10 Hitachi Ltd Rotary electric machine
JP2006054963A (en) * 2004-08-12 2006-02-23 Minebea-Matsushita Motor Corp Stepping motor
JP2011244976A (en) * 2010-05-26 2011-12-08 Panasonic Corp Washing machine
JP2015115593A (en) * 2013-12-16 2015-06-22 三菱電機株式会社 Motor, air conditioner, and method of manufacturing motor

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