Double-rotor motor and air conditioning unit

A dual-rotor motor and inner rotor technology, applied in electric components, electrical components, electromechanical devices, etc., can solve problems such as limited rotor inertia
CN112234785AActive Publication Date: 2021-01-15ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
Publication Date
2021-01-15

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Abstract

The invention provides a double-rotor motor and an air conditioning unit. The double-rotor motor comprises a stator, an outer rotor and an inner rotor, the stator is fixedly arranged, the stator formsan outer stator section and an inner stator section which are connected along the height direction of the stator, the outer rotor is arranged on the outer side of the outer stator section, and the inner rotor is arranged on the inner side of the inner stator section. By means of the technical scheme, only the stacking height of the outer rotor with the large radius can be increased, the increasedcost is small, and the brought rotational inertia is obviously increased. The moment of inertia of the motor is increased, the torque fluctuation of low-frequency operation of a compressor is reduced, the low-frequency operation current fluctuation is reduced, the current harmonic content is reduced, the compression low-frequency operation rotating speed is more stable, and the efficiency of thecompressor in low frequency operation is enhanced.
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Description

technical field

[0001] The invention relates to the technical field of motors, in particular to a double-rotor motor and an air-conditioning unit. Background technique

[0002] The existing double-rotor internal and external motors have the characteristics of the same number of slot poles and the same axial position of the internal and external motors. Therefore, the dual-rotor internal and external motors often have the following problems:

[0003] When the torque fluctuation of the compressor running at low frequency is large, it is necessary to reduce the torque fluctuation of the compressor by increasing the moment of inertia of the motor rotor. The motor with the same axial position of the inner and outer motors in the existing structure has a limited increase in the moment of inertia of the rotor. The stator and rotor of the inner and outer motors increase the stack height synchronously, which increases the cost of the motor. Contents of the invention

[0004] The e...

Claims

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