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WO2022180708A1 - Stator, moteur électrique et climatiseur - Google Patents

Stator, moteur électrique et climatiseur 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
English (en)
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/fr
Publication of WO2022180708A1 publication Critical patent/WO2022180708A1/fr

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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

Ce stator (3) présente un noyau de stator (31) ayant des dents (311), une partie isolante (33) disposée sur les dents (311), un enroulement (32) enroulé autour de la partie isolante (33), un élément de dissipation de chaleur (5) faisant face à une surface périphérique externe du noyau de stator (31), et une résine (6) recouvrant au moins une partie du noyau de stator (31).
PCT/JP2021/006971 2021-02-25 2021-02-25 Stator, moteur électrique et climatiseur WO2022180708A1 (fr)

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JP2023501735A JPWO2022180708A1 (fr) 2021-02-25 2021-02-25
PCT/JP2021/006971 WO2022180708A1 (fr) 2021-02-25 2021-02-25 Stator, moteur électrique et climatiseur

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Application Number Priority Date Filing Date Title
PCT/JP2021/006971 WO2022180708A1 (fr) 2021-02-25 2021-02-25 Stator, moteur électrique et climatiseur

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WO2022180708A1 true WO2022180708A1 (fr) 2022-09-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08140300A (ja) * 1994-11-07 1996-05-31 Asmo Co Ltd 放熱フィンを有するモータ
JPH099575A (ja) * 1995-06-19 1997-01-10 Hitachi Ltd 回転電気機械
JP2006054963A (ja) * 2004-08-12 2006-02-23 Minebea-Matsushita Motor Corp ステッピングモータ
JP2011244976A (ja) * 2010-05-26 2011-12-08 Panasonic Corp 洗濯機
JP2015115593A (ja) * 2013-12-16 2015-06-22 三菱電機株式会社 電動機、空気調和機、および電動機の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08140300A (ja) * 1994-11-07 1996-05-31 Asmo Co Ltd 放熱フィンを有するモータ
JPH099575A (ja) * 1995-06-19 1997-01-10 Hitachi Ltd 回転電気機械
JP2006054963A (ja) * 2004-08-12 2006-02-23 Minebea-Matsushita Motor Corp ステッピングモータ
JP2011244976A (ja) * 2010-05-26 2011-12-08 Panasonic Corp 洗濯機
JP2015115593A (ja) * 2013-12-16 2015-06-22 三菱電機株式会社 電動機、空気調和機、および電動機の製造方法

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