Single-phase permanent magnet motor and compressor

By introducing the first arc edge part and the first protrusion part into the stator top structure of the single-phase permanent magnet motor, the problem of excessive torque pulse oscillation under the grid-connected working conditions is solved, and the effect of reducing vibration and noise, improving user experience and output torque capability is achieved.

CN119787759APending Publication Date: 2025-04-08JIAXIPERA COMPRESSOR +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411923127.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-04-08

AI Technical Summary

Technical Problem

The existing single-phase permanent magnet motors have excessive torque pulse oscillations under grid connection conditions, resulting in greater vibration and noise.

Method used

By introducing the connected first arc edge and first protrusion into the stator top structure of a single-phase permanent magnet motor, the distance between the first arc edge and the first protrusion to the center of the motor is different, and the distance between the arc edge and the center of the motor is adjusted on the arc edge so that it is in an increasing state during rotation, thereby reducing torque pulse vibration.

Benefits of technology

It effectively reduces the torque pulse vibration of a single-phase permanent magnet motor under grid connection conditions, reduces the vibration and noise of the motor, improves the user experience, and enhances the structural strength of the tooth tips, and improves the output torque capability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119787759A_ABST
    Figure CN119787759A_ABST
Patent Text Reader

Abstract

The invention provides a single-phase permanent magnet motor and a compressor, the single-phase permanent magnet motor comprises an annular stator yoke part and a plurality of stator teeth extending inwards from the stator yoke part in the radial direction, and the tooth crest, close to one side of a permanent magnet, of each stator tooth comprises a first arc edge part and a first protruding part which are connected; wherein the distance between a point on the first arc edge part and the center of the single-phase permanent magnet motor is different from the distance between a point on the first protruding part and the center of the single-phase permanent magnet motor, and the distance between the first arc edge part and the center of the single-phase permanent magnet motor in the direction facing the first protruding part is in an increasing state; if the single-phase permanent magnet motor rotates in the anticlockwise direction, the distance from the first arc edge part to the motor center of the single-phase permanent magnet motor in the clockwise direction is gradually increased; the largest distance between the first arc edge portion and the motor center of the single-phase permanent magnet motor is connected with the first protruding portion. According to the stator tooth structure and the permanent magnet combination, the torque pulse vibration of the single-phase permanent magnet motor under the grid-connected working condition can be effectively reduced.
Need to check novelty before this filing date? Find Prior Art