WO2022142464A1 - Stator, moteur, compresseur et dispositif de réfrigération - Google Patents

Stator, moteur, compresseur et dispositif de réfrigération Download PDF

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Publication number
WO2022142464A1
WO2022142464A1 PCT/CN2021/117818 CN2021117818W WO2022142464A1 WO 2022142464 A1 WO2022142464 A1 WO 2022142464A1 CN 2021117818 W CN2021117818 W CN 2021117818W WO 2022142464 A1 WO2022142464 A1 WO 2022142464A1
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WO
WIPO (PCT)
Prior art keywords
stator
holding
holding portion
yoke
motor
Prior art date
Application number
PCT/CN2021/117818
Other languages
English (en)
Chinese (zh)
Inventor
徐飞
邱小华
江波
Original Assignee
安徽美芝精密制造有限公司
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 安徽美芝精密制造有限公司 filed Critical 安徽美芝精密制造有限公司
Publication of WO2022142464A1 publication Critical patent/WO2022142464A1/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
    • 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
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • 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
    • H02K1/16—Stator cores with slots for windings
    • 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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • 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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators

Definitions

  • the present disclosure relates to the technical field of electric motors, in particular to stators, electric motors, compressors and refrigeration equipment.
  • Rotary compressors in the related art generally use built-in permanent magnet motors for their motors.
  • higher requirements are placed on the vibration and noise of motors, and the previous motors are increasingly unable to meet the requirements.
  • the stator iron core of the motor is formed as a whole by pressing the stator punching pieces and various fasteners, for example, the stator punching pieces are connected by riveting in the axial direction.
  • the vibration noise of the motor is caused by the following reasons:
  • the rigidity of the stator core is low, which in turn causes the motor including the stator to generate large vibration and noise during operation.
  • the present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.
  • an aspect of the present disclosure provides a stator to reduce vibration noise of a motor including the stator and improve the efficiency of the motor including the stator.
  • Another aspect of the present disclosure provides a motor to reduce vibration noise of the motor and improve the efficiency of the motor.
  • Still another aspect of the present disclosure provides a compressor to reduce vibration noise of the compressor and improve the efficiency of the compressor.
  • Yet another aspect of the present disclosure provides refrigeration equipment to reduce vibration noise of the refrigeration equipment and improve the efficiency of the refrigeration equipment.
  • a stator includes a stator core, the stator core includes a body, the body includes a yoke and a plurality of stator teeth, and a stator is defined between two adjacent stator teeth and the yoke a slot, wherein the stator core has a first end face and a second end face opposite in its axial direction;
  • stator winding is wound on the stator teeth, the stator winding includes a first part, a second part and a third part, the first part and the second part are located outside the stator slot, the third portion is located within the stator slot;
  • the lead wire is electrically connected to the first part
  • a holder comprising:
  • a first holding part and a second holding part the first holding part is provided on the first end surface, the first holding part covers at least a part of the first part, and the second holding part is provided on the said second end face;
  • a third holding portion at least a part of which is provided in the stator slot, the third holding portion has a first end portion and a second end opposite in the axial direction of the stator core part, the first end of the third holding part is connected to the first holding part, and the second end of the third holding part is connected to the second holding part.
  • the stator according to the embodiment of the present disclosure has the advantages that the vibration noise of the motor including the stator can be reduced, and the efficiency of the motor including the stator can be improved.
  • the second retaining portion covers at least a portion of the second portion.
  • the third retaining portion covers at least a portion of the third portion.
  • the plurality of the third holding parts fill the plurality of the stator slots in a one-to-one correspondence, so as to cover the third part, wherein the first A part of the three holding parts protrudes inwardly from the stator slot in the direction from the yoke part to the stator teeth, and the inner edge of the part of the third holding part is located at the tooth shoe part of the stator tooth. Outside of the inner edge, the inner edge of the part of the third holding portion is located inside the outer edge of the tooth shoe portion of the stator teeth.
  • the outer edge of the first holding portion is located inside the outer edge of the yoke portion, and the outer edge of the second holding portion is located inside the outer edge of the yoke portion.
  • each of the first holding portion and the second holding portion is annular, the outer diameter of the first holding portion is smaller than the outer diameter of the yoke portion, and the second holding portion is The outer diameter of the yoke is smaller than the outer diameter of the yoke.
  • the inner edge of the third retaining portion is located outside the inner edge of the stator teeth.
  • the retainer is integrally injection molded.
  • a motor includes a stator, the stator includes a stator core, the stator core includes a body, the body includes a yoke and a plurality of stator teeth, two adjacent stator teeth and the yoke
  • a stator slot is defined between the parts, wherein the stator core has a first end face and a second end face opposite in its axial direction;
  • stator winding is wound on the stator teeth, the stator winding includes a first part, a second part and a third part, the first part and the second part are located outside the stator slot, the third portion is located within the stator slot;
  • the lead wire is electrically connected to the first part
  • a holder comprising:
  • a first holding part and a second holding part the first holding part is provided on the first end surface, the first holding part covers at least a part of the first part, and the second holding part is provided on the said second end face;
  • a third holding portion at least a part of which is provided in the stator slot, the third holding portion has a first end portion and a second end opposite in the axial direction of the stator core part, the first end of the third holding part is connected to the first holding part, and the second end of the third holding part is connected to the second holding part.
  • the motor according to the embodiment of the present disclosure has the advantages of reducing the vibration noise of the motor and improving the efficiency of the motor.
  • the second retaining portion covers at least a portion of the second portion.
  • the third retaining portion covers at least a portion of the third portion.
  • the plurality of the third holding parts fill the plurality of the stator slots in a one-to-one correspondence, so as to cover the third part, wherein the first A part of the three holding parts protrudes inwardly from the stator slot in the direction from the yoke part to the stator teeth, and the inner edge of the part of the third holding part is located at the tooth shoe part of the stator tooth. Outside of the inner edge, the inner edge of the part of the third holding portion is located inside the outer edge of the tooth shoe portion of the stator teeth.
  • the outer edge of the first holding portion is located inside the outer edge of the yoke portion, and the outer edge of the second holding portion is located inside the outer edge of the yoke portion.
  • each of the first holding portion and the second holding portion is annular, the outer diameter of the first holding portion is smaller than the outer diameter of the yoke portion, and the second holding portion is The outer diameter of the yoke is smaller than the outer diameter of the yoke.
  • the inner edge of the third retaining portion is located outside the inner edge of the stator teeth.
  • the retainer is integrally injection molded.
  • a compressor includes an electric motor, the electric motor includes a stator, the stator includes a stator iron core, and the stator iron core includes a body including a yoke and a plurality of stator teeth, two adjacent ones of which are A stator slot is defined between the stator teeth and the yoke, wherein the stator core has a first end face and a second end face opposite in the axial direction thereof;
  • stator winding is wound on the stator teeth, the stator winding includes a first part, a second part and a third part, the first part and the second part are located outside the stator slot, the third portion is located within the stator slot;
  • the lead wire is electrically connected to the first part
  • a holder comprising:
  • a first holding part and a second holding part the first holding part is provided on the first end surface, the first holding part covers at least a part of the first part, and the second holding part is provided on the said second end face;
  • a third holding portion at least a part of which is provided in the stator slot, the third holding portion has a first end portion and a second end opposite in the axial direction of the stator core part, the first end of the third holding part is connected to the first holding part, and the second end of the third holding part is connected to the second holding part.
  • the compressor according to the embodiment of the present disclosure has the advantages of reducing the vibration noise of the compressor and improving the efficiency of the compressor.
  • the second retaining portion covers at least a portion of the second portion.
  • the third retaining portion covers at least a portion of the third portion.
  • the plurality of the third holding parts fill the plurality of the stator slots in a one-to-one correspondence, so as to cover the third part, wherein the first A part of the three holding parts protrudes inwardly from the stator slot in the direction from the yoke part to the stator teeth, and the inner edge of the part of the third holding part is located at the tooth shoe part of the stator tooth. Outside of the inner edge, the inner edge of the part of the third holding portion is located inside the outer edge of the tooth shoe portion of the stator teeth.
  • the outer edge of the first holding portion is located inside the outer edge of the yoke portion, and the outer edge of the second holding portion is located inside the outer edge of the yoke portion.
  • each of the first holding portion and the second holding portion is annular, the outer diameter of the first holding portion is smaller than the outer diameter of the yoke portion, and the second holding portion is The outer diameter of the yoke is smaller than the outer diameter of the yoke.
  • the inner edge of the third retaining portion is located outside the inner edge of the stator teeth.
  • the retainer is integrally injection molded.
  • a refrigeration apparatus includes a compressor, the compressor includes a motor, the motor includes a stator, the stator includes a stator iron core, and the stator iron core includes a body including a yoke and a plurality of stator teeth, a stator slot is defined between two adjacent stator teeth and the yoke, wherein the stator iron core has a first end face and a second end face opposite in the axial direction;
  • stator winding is wound on the stator teeth, the stator winding includes a first part, a second part and a third part, the first part and the second part are located outside the stator slot, the third portion is located within the stator slot;
  • the lead wire is electrically connected to the first part
  • a holder comprising:
  • a first holding part and a second holding part the first holding part is provided on the first end surface, the first holding part covers at least a part of the first part, and the second holding part is provided on the said second end face;
  • a third holding portion at least a part of which is provided in the stator slot, the third holding portion has a first end portion and a second end opposite in the axial direction of the stator core part, the first end of the third holding part is connected to the first holding part, and the second end of the third holding part is connected to the second holding part.
  • the refrigeration equipment according to the embodiments of the present disclosure has the advantages of reducing vibration and noise of the refrigeration equipment, improving the efficiency of the refrigeration equipment, and the like.
  • the second retaining portion covers at least a portion of the second portion.
  • the third retaining portion covers at least a portion of the third portion.
  • the plurality of the third holding parts fill the plurality of the stator slots in a one-to-one correspondence, so as to cover the third part, wherein the first A part of the three holding parts protrudes inwardly from the stator slot in the direction from the yoke part to the stator teeth, and the inner edge of the part of the third holding part is located at the tooth shoe part of the stator tooth. Outside of the inner edge, the inner edge of the part of the third holding portion is located inside the outer edge of the tooth shoe portion of the stator teeth.
  • the outer edge of the first holding portion is located inside the outer edge of the yoke portion, and the outer edge of the second holding portion is located inside the outer edge of the yoke portion.
  • each of the first holding portion and the second holding portion is annular, the outer diameter of the first holding portion is smaller than the outer diameter of the yoke portion, and the second holding portion is The outer diameter of the yoke is smaller than the outer diameter of the yoke.
  • the inner edge of the third retaining portion is located outside the inner edge of the stator teeth.
  • the retainer is integrally injection molded.
  • FIG. 1 is a schematic structural diagram of a stator according to an embodiment of the present disclosure (a holder is not shown).
  • FIG. 2 is a perspective view of a stator core according to one embodiment of the present disclosure.
  • FIG 3 is a top view of a stator core according to one embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a stator according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a compressor according to an embodiment of the present disclosure.
  • stator 1 stator core 10; body 110; yoke 101; outer edge 1011; stator teeth 102; teeth 1021; tooth shoe 1022; inner edge 1023; outer edge 1024; stator slot 103; One end face 104 (1101); second end face 105 (1102);
  • stator winding 20 first part 201; second part 202; third part 203;
  • first holder 301 outer edge 3011; second holder 302; outer edge 3021; third holder 303; first end 3031; second end 3032; inner edge 3033;
  • Compressor 100 Motor 1000; Housing 1001; Rotor 1002; Crankshaft 1003; Main bearing 1004; Cylinder 1005; Piston 1006;
  • the stator 1 includes a stator core 10 , a stator winding 20 , a lead wire 40 and a holder 30 .
  • the stator core 10 includes a body 110 , the body 110 includes a yoke 101 and a plurality of stator teeth 102 , a stator slot 103 is defined between two adjacent stator teeth 102 and the yoke 101 , and the stator winding 20 is wound around the stator teeth 102 .
  • the stator core 10 has a first end surface 104 and a second end surface 105 opposite to each other in the axial direction thereof.
  • the stator winding 20 includes a first part 201 , a second part 202 and a third part 203 , the first part 201 and the second part 202 are located outside the stator slot 103 , and the third part 203 is located in the stator slot 103 .
  • the lead wire 40 is electrically connected to the first part 201 .
  • the holder 30 includes a first holding part 301 , a second holding part 302 and a third holding part 303 , the first holding part 301 is provided on the first end face 104 , and the first holding part 301 covers the first part At least a part of 201 , the second holding portion 302 is provided on the second end face 105 .
  • At least a part of the third holding portion 303 is provided in the stator slot 103 , and the third holding portion 303 has a first end portion 3031 and a second end portion 3032 that are opposite to each other in the axial direction of the stator core 10 , and the third holding portion 303
  • the first end portion 3031 of the third holding portion 303 is connected to the first holding portion 301
  • the second end portion 3032 of the third holding portion 303 is connected to the second holding portion 302 .
  • the stator core in the prior art is formed as a whole by pressing the stator punching pieces and various fasteners, for example, the stator punching pieces are connected by riveting in the axial direction.
  • the rigidity of the stator iron core is low, which in turn causes the motor including the stator to generate relatively large vibration and noise during operation.
  • the electromagnetic force acts on the tooth shoe of the stator core, the electromagnetic force will be transmitted outward along the tooth shoe, tooth and yoke of the stator core, resulting in the deformation of the outer edge of the stator core. It also leads to a higher noise radiation during operation of the motor including the stator.
  • assembly stress will be generated.
  • the inward transmission of assembly stress will cause the inner diameter of the stator core to deform, and cause the stator and the motor of the motor to be deformed.
  • the gap between the rotors is uneven, which eventually leads to the deterioration of vibration and noise of the motor including the stator during operation; on the other hand, the assembly stress increases the core loss of the stator, which ultimately reduces the efficiency of the motor including the stator.
  • the stator 1 provides the first holding portion 301 on the first end face 104 of the body 110 of the stator core 10 and the second holding portion 302 on the second end face 105 , and the first holding portion 301
  • the second holding part 302 is connected with the third holding part 303 so that the holding member 30 is integrated.
  • the first holding portion 301 and the second holding portion 302 can be used to clamp (press) the plurality of stator punches of the stator iron core 10 in the axial direction of the stator iron core 10 , so that the plurality of stator iron cores 10 can be significantly increased.
  • the connection rigidity of the stator punching pieces further significantly improves the rigidity of the stator core 10 .
  • the deformation of the yoke 101 under the action of electromagnetic force can be significantly reduced or even eliminated (for example, the deformation of the outer peripheral surface of the stator iron core 10 ), and significantly reduce or even eliminate the deformation caused by assembling the stator 1 (for example, the deformation of the inner diameter of the stator iron core 10 , that is, the inner peripheral surface of the stator iron core 10 ) Vibration noise caused by deformation).
  • the deformation of the stator core 10 can be significantly reduced or even eliminated, so that the stress iron loss caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, so that the The efficiency of the motor including the stator 1 is substantially improved.
  • the vibration noise of the motor including the stator 1 can be reduced, and the efficiency of the motor including the stator 1 can be improved.
  • the stator 1 includes a stator core 10 , a stator winding 20 , a lead wire 40 and a holder 30 .
  • the stator core 10 includes a body 110 including a yoke 101 and a plurality of stator teeth 102 .
  • the plurality of stator teeth 102 includes a tooth portion 1021 and a tooth shoe portion 1022 .
  • the first end face 104 and the second end face 105 of the stator iron core 10 are the opposite end faces of the body 110 in the axial direction of the stator iron core 10 . That is, the body 110 has a first end surface 1101 and a second end surface 1102 that are opposed to each other in the axial direction of the stator core 10 .
  • the first end surface 1101 of the body 110 is the first end surface 104 of the stator core 10
  • the second end surface 1102 of the body 110 is the second end surface 105 of the stator core 10 .
  • the axial direction of the stator core 10 is shown by arrow A in FIG. 1 .
  • a plurality of stator teeth 102 are provided on the yoke 101 at intervals along the circumferential direction of the stator core 10 .
  • a stator slot 103 is defined between two adjacent stator teeth 102 and the yoke 101 , that is, the stator core 10 has a plurality of stator slots 103 .
  • the lead wire 40 is electrically connected to the first portion 201 , whereby the lead wire 40 is disposed close to the first holding portion 201 .
  • the stator winding 20 is wound on the stator teeth 102 , and the stator winding 20 includes a first part 201 , a second part 202 and a third part 203 .
  • the first part 201 and the second part 202 are located outside the stator slot 103
  • the third part 203 is located inside the stator slot 103 .
  • the first part 201 extends upward from the stator slot 103
  • the second part 202 extends downward from the stator slot 103
  • the first end face 104 is the upper surface of the stator iron core 10 (body 110)
  • the second end face 105 is the stator iron
  • the axial direction of the stator core 10 coincides with the vertical direction.
  • the up-down direction is shown by arrow B in FIG. 2 .
  • the holder 30 includes a first holding portion 301 , a second holding portion 302 and a third holding portion 303 .
  • the first holding portion 301 is provided on the first end face 104
  • the second holding portion 302 is provided on the second holding portion 301 . on the end face 105.
  • the third holding portion 303 has a first end portion 3031 and a second end portion 3032 that are opposite to each other in the axial direction of the stator core 10 , the first end portion 3031 of the third holding portion 303 is connected to the first holding portion 301 , and the third holding portion 303
  • the second end portion 3032 of the holding portion 303 is connected to the second holding portion 302 .
  • the first holding portion 301 is located above the second holding portion 302 , the first holding portion 301 is provided on the upper end surface (the first end surface 104 ) of the stator core 10 , and the second holding portion 302 is provided on the upper end surface of the stator core 10 . on the lower end surface (the second end surface 105 ).
  • the upper end portion of the third holding portion 303 is connected to the first holding portion 301 , and the lower end portion of the third holding portion 303 is connected to the second holding portion 302 .
  • the retaining member 30 is integrally injection-molded, that is, the first retaining portion 301 , the second retaining portion 302 and the third retaining portion 303 are integrally injection-molded.
  • the integral injection molding of the holder 30 is beneficial to further improve the connection rigidity of the plurality of stator punching pieces of the stator iron core 10 , thereby improving the rigidity of the stator iron core 10 .
  • the holding member 30 is made of resin material.
  • stator punching sheets of the stator iron core 10 can be stacked together, then the stator winding 20 is wound on the stator iron core 10, and finally the holder 30 is integrally injection-molded on the stator iron core 10 and the stator iron core 10. on the stator winding 20.
  • the third holding portion 303 can be added to the inner and outer directions of the stator core 10 perpendicular to the axial direction of the stator core 10 .
  • the thickness of the first holding part 301 covers at least a part of the first part 201 , so that the thickness of the third holding part 303 can be increased in the axial direction of the stator core 10 , thereby improving the rigidity of the stator core 10 .
  • the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 .
  • the difficulty of injection molding of the holder 30 can be reduced by making the first holder 301 cover at least a part of the first portion 201 .
  • the second retaining portion 302 covers at least a portion of the second portion 202 .
  • the thickness of the third holding portion 303 can be further increased in the axial direction of the stator core 10 , thereby enhancing the rigidity of the stator core 10 .
  • the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 .
  • the difficulty of injection molding of the holder 30 can be reduced by covering at least a part of the second portion 202 with the second holder 302 .
  • the third holding portion 303 covers at least a part of the third portion 203 of the stator winding 20 .
  • the thickness of the third holding portion 303 can be increased in the inner and outer directions of the stator iron core 10 perpendicular to the axial direction of the stator iron core 10 , thereby improving the rigidity of the stator iron core 10 .
  • the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 .
  • each stator slot 103 is filled with the third holding portion 303 .
  • a part of the third holding part 303 protrudes inward from the stator slot 103 , the inner edge of a part of the third holding part 303 is located outside the inner edge 1023 of the tooth shoe part 1022 of the stator tooth 102 , the part of the third holding part 303
  • the inner edge of the tooth shoe 1022 is inboard of the outer edge 1024 . That is, the inner edge of a part of the third holding portion 303 is located between the inner edge 1023 (inner edge) and the outer edge 1024 (outer edge) of the shoe portion 1022 .
  • the thickness of the third holding portion 303 can be significantly increased in the inner and outer directions of the stator iron core 10 perpendicular to the axial direction of the stator iron core 10 , thereby enhancing the rigidity of the stator iron core 10 .
  • the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 .
  • the holder 30 is integrally injection-molded, by making the third holder 303 fill the stator slot 103 , the injection molding difficulty of the holder 30 can be reduced.
  • the outer edge 3011 (outer edge) of the first holding portion 301 is located inside the outer edge 1011 of the yoke portion 101
  • the outer edge 3021 (outer edge) of the second holding portion 302 is located at the outer edge of the yoke portion 101 .
  • the outer edge 3011 of the first holding portion 301 is located at the outer edge of the yoke portion 101 .
  • the outer edge 3021 of the second holding part 302 is located inside the outer edge 1011 of the yoke 101, which can avoid the outer edge 3011 of the first holding part 301 and the second
  • the outer edge 3021 of the holding portion 302 is in direct contact with the casing of the compressor, so as to prevent the holding member 30 from being broken during assembly and generating dust, which in turn causes the compressor pump to block and malfunction, thereby affecting the refrigeration effect of the compressor.
  • each of the first holding portion 301 and the second holding portion 302 is annular, the outer diameter of the first holding portion 301 is smaller than the outer diameter of the yoke portion 101 , and the outer diameter of the second holding portion 302 is smaller than The outer diameter of the yoke 101 . That is, in the inner and outer directions perpendicular to the axial direction of the stator core 10, the outer edge 3011 of the first holding portion 301 is located inside the outer edge 1011 of the yoke portion 101, and the outer edge 3021 of the second holding portion 302 is located in the yoke The inner side of the outer edge 1011 of the part 101 .
  • each of the first holding portion 301 and the second holding portion 302 an annular shape, the stator can be better clamped in the axial direction of the stator core 10 by the first holding portion 301 and the second holding portion 302
  • the plurality of stator punching pieces of the iron core 10 can significantly improve the connection rigidity of the plurality of stator punching pieces of the stator iron core 10 , thereby significantly improving the rigidity of the stator iron core 10 .
  • each of the first holding portion 301 and the second holding portion 302 is annular, which can reduce the difficulty of injection molding the holder 30 .
  • the inner edge 3033 (inner edge) of the third holding portion 303 is located outside the inner edge 1024 (inner edge) of the tooth shoe portion 1022 of the stator teeth 102 .
  • the inner edge 1023 of the tooth shoe portion 1022 of the stator teeth 102 is not covered by the third holding portion 303, which can not only prevent the third holding portion 303 from affecting the assembly of the rotor, but also allow the motor to dissipate heat better and prevent heat from being trapped in the motor. Accumulation, affecting the motor insulation system.
  • inward refers to a direction adjacent to the central axis of the stator iron core 10 on a plane perpendicular to the axial direction of the stator iron core 10
  • outward refers to a direction away from the stator iron on a plane perpendicular to the axial direction of the stator iron core 10 .
  • the inside-out direction is shown by arrow C in FIG. 3 .
  • the present disclosure also provides a motor 1000 .
  • the motor 1000 according to the embodiment of the present disclosure includes the stator 1 according to the above-described embodiment of the present disclosure. Therefore, the motor 1000 according to the embodiment of the present disclosure has the advantages of low vibration noise and high efficiency.
  • the motor 1000 further includes a rotor 1002 .
  • the ratio of Z to 2P is equal to 3/2 or 6/5 or 6/7.
  • the proportional relationship between the number Z of the stator slots 104 and the number of pole pairs P of the rotor is defined, and then the pole-slot fit of the motor 1000 is defined, wherein, when the number of pole pairs of the rotor 1002 is P, the number of poles of the rotor 1002 is 2P, That is, the motor 1000 can be a 6-pole 9-slot motor, a 4-pole 6-slot motor, an 8-pole 12-slot motor, and a 10-pole 12-slot motor.
  • the above types of motors 1000 can effectively reduce the armature iron loss, increase the magnetic flux, and further improve the efficiency of the motor 1000 .
  • the inner diameter of the stator core 10 is Di
  • the rated torque of the motor 1000 is T
  • the torque per unit volume of the rotor 1002 is TPV, which satisfies the following relationship: 5.18 ⁇ 10-7 ⁇ T ⁇ Di-3 ⁇ TPV- 1 ⁇ 1.17 ⁇ 10-6, 5kN ⁇ m ⁇ m-3 ⁇ TPV ⁇ 45kN ⁇ m ⁇ m-3; wherein, the unit of rated torque T of motor 1000 is N ⁇ m, and the inner diameter Di of stator core 10 is The unit is mm, and the unit of the torque TPV per unit volume of the rotor 1002 is kN ⁇ m ⁇ m ⁇ 3 .
  • the rated torque of the motor 1000 is T
  • the inner diameter of the stator core 10 is Di
  • the torque per unit volume of the rotor 1002 is TPV
  • the value range of torque TPV per unit volume is 5kN ⁇ m ⁇ m-3 ⁇ TPV ⁇ 45kN ⁇ m ⁇ m-3
  • the motor 1000 and the compressor 100 using the rotor 1002 can effectively The magnetic flux leakage of the rotor 1002 is reduced, the utilization rate of the permanent magnet is increased, and the efficiency of the motor 1000 is improved.
  • the side of the plurality of tooth shoe parts 103 facing the rotor forms the inner peripheral surface of the stator 1, and the ratio of the diameter of the inner peripheral surface of the stator 1 to the diameter of the outer edge of the stator core 10 is greater than 0.5 and less than or equal to 0.58 .
  • the ratio of the diameter of the inner peripheral surface of the stator 1 to the diameter of the outer edge of the stator core 10 is greater than 0.5, and less than or equal to 0.57, so that the motor has higher cost performance.
  • the present disclosure also provides a compressor 100 .
  • the compressor 100 according to the embodiment of the present disclosure includes the motor 1000 according to the above-described embodiment of the present disclosure.
  • the compressor 100 according to the embodiment of the present disclosure has the advantages of low vibration noise and high efficiency.
  • the compressor 100 further includes components such as a casing 1001 , a crankshaft 1022 , a main bearing 102 , a cylinder 103 , a piston 104 , and a secondary bearing 105 .
  • components such as the casing, the crankshaft 1022 , the main bearing 102 , the cylinder 103 , the piston 104 and the auxiliary bearing 105 may be known and are not related to the invention of the present application, so they will not be described in detail.
  • the present disclosure also provides refrigeration equipment.
  • the refrigeration apparatus according to the embodiment of the present disclosure includes the compressor 100 according to the above-described embodiment of the present disclosure.
  • gas drainage pipeline 100 of the embodiment of the present disclosure not only enables the sensor probe 3 to be accurately fixed on the pipe body 1 , but also facilitates the installation and removal of the sensor probe 3 .
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified.
  • installed installed
  • connected connected
  • fixed a detachable connection
  • it can be a mechanical connection or an electrical connection or can communicate with each other
  • it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified.
  • the specific meanings of the above terms in the present disclosure can be understood according to specific situations.
  • a first feature "on” or “under” a second feature may be in direct contact with the first and second features, or indirectly through an intermediary between the first and second features touch.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the terms “one embodiment,” “some embodiments,” “example,” “specific example,” or “some examples,” etc. mean a specific feature, structure, material, or Features are included in at least one embodiment or example of the present disclosure.
  • schematic representations of the above terms are not necessarily directed to the same embodiment or example.
  • the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
  • those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

La présente divulgation concerne le domaine technique des moteurs et plus particulièrement un stator, un moteur, un compresseur et un dispositif de réfrigération. Le stator comprend un noyau de fer de stator, des enroulements de stator, un fil de sortie et un élément de retenue ; le noyau de fer de stator comprend une partie culasse et une pluralité de dents de stator, une fente de stator est définie entre chaque paire de dents de stator adjacente et la partie culasse, et le noyau de fer de stator a une première surface d'extrémité et une deuxième surface d'extrémité ; les enroulements de stator comprennent chacun une première partie, une deuxième partie et une troisième partie, la première partie et la deuxième partie étant situées à l'extérieur de la fente de stator. Le dispositif de retenue comprend une première partie de retenue, une deuxième partie de retenue, et une troisième partie de retenue, la première partie de retenue étant disposée sur la première surface d'extrémité, la première partie de retenue recouvrant au moins une partie de la première partie, et la deuxième partie de retenue étant disposée sur la deuxième surface d'extrémité. Au moins une partie de la troisième partie de retenue est disposée dans la fente de stator, la troisième partie de retenue a une première partie d'extrémité et une deuxième partie d'extrémité, et deux parties d'extrémité de la troisième partie de retenue sont respectivement connectées à la première partie de retenue et à la deuxième partie de retenue. Un moteur utilisant le stator présente les avantages d'un faible bruit de vibration et d'une efficacité élevée.
PCT/CN2021/117818 2020-12-28 2021-09-10 Stator, moteur, compresseur et dispositif de réfrigération WO2022142464A1 (fr)

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