Rotor cores, rotor structures, motors and compressors, and electrical appliances having them

A technology of rotor core and rotor structure, which is applied in the field of rotor structure, rotor core, motor and compressor and electrical appliances with it, can solve the problems of permanent magnet synchronous motor noise and vibration, reduce electromagnetic vibration and electromagnetic noise, Improvement of air-gap magnetic field waveform and performance improvement effect

Active Publication Date: 2022-06-17
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 cores, rotor structures, motors and compressors, and electrical appliances having them
  • Rotor cores, rotor structures, motors and compressors, and electrical appliances having them
  • Rotor cores, rotor structures, motors and compressors, and electrical appliances having them

Examples

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Embodiment Construction

[0032] see in combination figure 1 As shown, according to an embodiment of the present application, a rotor iron core includes: an iron core body 1; a groove group is provided on the outer peripheral wall of the iron 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; the n grooves 2 are all 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 the size of each groove 2 is different. 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, greatly reduce the torque ripple of the motor, thereby reducing the electromagnetic vibration and electromagnetic noise of the motor,...

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Abstract

The present application provides a rotor core, a rotor structure, a motor and a compressor, and an electrical appliance having the same, including: an iron core body; a groove group is arranged on the outer peripheral wall of the iron core body; the groove group includes n grooves; In the groove group, each groove is different in size from any other groove; the n grooves are all located in the direction of the q-axis; where n≧2. According to the rotor core, the rotor structure, the motor and the compressor and the electric appliance with the rotor core of the present application, the problem of noise and vibration of the permanent magnet synchronous motor can be improved.

Description

technical field [0001] The application belongs to the technical field of air conditioners, and specifically relates to a rotor iron 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 advantages of small size and simple structure. [0003] However, the existing permanent magnet synchronous electrode also has the same problem of noise and vibration as the traditional motor. Especially in the field of compressors, the motor is usually connected to the crankshaft structure. The crankshaft itself has eccentricity and eccentricity, which will cause the motor to form a non-sinusoidal air gap magnetic field. It will cause the motor to generate large electromagnetic vibration and electromagnetic noise, which will not only affect the service life of the motor, especially in some special working environments and fields ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/274
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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