Motor rotor, permanent magnet motor and compressor

Motor rotor, permanent magnet motor and compressor

  • CN 107,528,400 B
  • Filed: 09/30/2017
  • Issued: 07/30/2021
  • Est. Priority Date: 09/30/2017
  • Status: Active Grant
First Claim
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1. A permanent magnet motor adapted for use in a compressor, comprising:

  • a motor rotor, the motor rotor comprising;

    the rotor comprises a rotor core, wherein a plurality of groups of accommodating grooves are formed in the end face of the rotor core along the circumferential direction of the rotor core;

    a plurality of permanent magnets correspondingly embedded in the plurality of groups of accommodating grooves, the permanent magnets in each group of accommodating grooves form magnetic poles,the number of the magnetic poles is more than or equal to 8 and less than or equal to 12, the distance between two ends of the magnetic poles is L, the diameter of the outer periphery of the rotor core is D1, and L is more than or equal to 0.18 multiplied by D1 and less than or equal to 0.28 multiplied by D1;

    the motor stator is correspondingly sleeved outside the motor rotor and comprises a stator core and a winding wound on the stator core, the inner wall of the stator core is provided with a plurality of stator slots, the number of the stator slots is more than or equal to 10 and less than or equal to 14, the number of the stator slots is matched with the number of the magnetic poles, the stator slots are distributed along the circumferential direction and respectively conduct two end faces of the stator core, so that stator teeth are formed between any two adjacent stator slots,the outer diameter of the stator core is D2, and L is more than or equal to 0.09 multiplied by D2 and less than or equal to 0.18 multiplied by D2.

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