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Rotor structure, motor and household appliances

A technology of rotor structure and rotor body, applied in the field of rotor structure, motor and household appliances, can solve the problems of insufficient motor output, restricting motor torque, insufficient air gap magnetic density, etc., so as to reduce torque ripple and optimize magnetic density. Distribute and improve the effect of torque

Active Publication Date: 2021-07-13
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

Therefore, insufficient air gap magnetic density will restrict the torque of the motor, resulting in insufficient output of the motor

Method used

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  • Rotor structure, motor and household appliances
  • Rotor structure, motor and household appliances
  • Rotor structure, motor and household appliances

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] see in conjunction Figure 1 to Figure 5 As shown, a rotor structure is used for alternating pole motors, including: permanent magnet poles 1, alternating poles 2; air slots, the air slots are set in the permanent magnet poles 1 and / or alternating poles 2, and the air slots are used to increase the permanent magnet poles 1 and / or the air gap flux density o...

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Abstract

The invention provides a rotor structure, a motor and a household appliance. The rotor structure is used for an alternating pole motor, including: permanent magnet poles, alternating poles; air slots, the air slots are arranged in the permanent magnet poles and / or the Air-gap flux density of permanent magnet poles and / or alternating poles. The rotor structure of the present invention optimizes the magnetic density distribution in the magnetic poles by opening air slots in the permanent magnetic poles and / or alternate poles, and increases the air gap magnetic density at the magnetic poles, thereby increasing the torque of the motor; on the other hand, through the air slots The setting optimizes the flux density waveform of the rotor, so that the flux density waveform of the rotor tends to a sinusoidal waveform, reduces the torque ripple of the motor, and reduces the vibration and noise of the motor.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a rotor structure, a motor and household appliances. Background technique [0002] In the existing alternating pole permanent magnet motor, the soft magnetic material between the two permanent magnet installation slots is magnetized by the permanent magnet pole to have the opposite polarity to the permanent magnet pole, so it is called an alternating pole permanent magnet motor. [0003] Although this type of motor can reduce the amount of permanent magnets used and greatly reduce the cost of the motor, the reduction in the amount of permanent magnets used will result in the inability to form a large air gap flux density. The magnetic field in the air gap has both radial and tangential components, but the radial component is the main one. Therefore, the air-gap magnetic field and air-gap magnetic density are usually referred to as the radial component by default. For ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27
CPCH02K1/276H02K2213/03H02K2201/03H02K1/2746
Inventor 魏正平李权锋黄侠昌王周叶陈建邓文科刘思苑汪汉新
Owner GREE ELECTRIC APPLIANCES INC
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