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Rotor core, rotor structure, motor, compressor and electric appliance with same

A technology of rotor iron core and rotor structure is applied in the fields of motors and compressors, as well as electrical appliances, rotor structures and rotor iron cores. Improve performance and improve the effect of noise and vibration problems

Active Publication Date: 2021-02-26
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in this application is to provide a rotor core, a rotor structure, a motor and a compressor, and an electrical appliance with them, which can improve the noise and vibration problems of permanent magnet synchronous motors.

Method used

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  • Rotor core, rotor structure, motor, compressor and electric appliance with same
  • Rotor core, rotor structure, motor, compressor and electric appliance with same
  • Rotor core, rotor structure, motor, compressor and electric appliance with same

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Embodiment Construction

[0032] see in conjunction figure 1 As shown, according to an embodiment of the present application, a rotor core includes: a core body 1; a groove group is provided on the outer peripheral wall of the core body 1; the groove group includes n grooves 2; In the group, each groove 2 is different in size from any other groove 2; n grooves 2 are located in the q-axis direction; where n≧2; in the q-axis direction, the outer peripheral wall of the core body 1 increases At least two grooves 2, and each groove 2 has different sizes. This uneven distribution makes the q-axis air gap length unevenly distributed, so that an uneven air gap structure is formed between the stator and rotor, and the air gap magnetic field of the motor is improved. Waveform, weaken the non-uniform air gap caused by the eccentricity of the crankshaft, so that the torque ripple of the motor is greatly reduced, thereby reducing the electromagnetic vibration and electromagnetic noise of the motor, improving the pe...

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Abstract

The invention provides a rotor core, a rotor structure, a motor, a compressor and an electric appliance with the same. The rotor core comprises an iron core body, wherein a groove group is arranged onthe peripheral wall of the iron core body; the groove group comprises n grooves; in the groove group, the size of each groove is different from the size of any one of the rest grooves; the n groovesare all located in an q-axis direction; and n is greater than or equal to 2. According to the rotor core, the rotor structure, the motor, the compressor and the electric appliance with the same, the noise vibration problem of a permanent magnet synchronous motor can be solved.

Description

technical field [0001] The present application belongs to the technical field of air conditioners, and in particular relates to a rotor core, a rotor structure, a motor, a compressor and an electrical appliance having the same. Background technique [0002] At present, permanent magnet synchronous motors are widely used in the industry because of their small size and simple structure. [0003] However, the existing permanent magnet synchronous electrodes also have the same problem of noise and vibration as the traditional motor. Especially in the compressor field, the motor is usually connected to the crankshaft structure. The motor will generate large electromagnetic vibration and electromagnetic noise, which will not only affect the service life of the motor, especially in some special working environments where the noise requirements are relatively strict, the noise problem will bring great troubles, and it will also affect the The performance of the motor also has a big...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27
CPCH02K1/274H02K2201/03H02K2213/03
Inventor 张继胤龙芳李尚平江胜军张强
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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