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Double rotor motor and air conditioning unit

A dual-rotor motor and inner rotor technology, applied in electric components, electromechanical devices, electrical components, etc., can solve the problem of limited rotor inertia, and achieve the effect of significantly increasing the rotational inertia, reducing torque fluctuations, and improving efficiency

Active Publication Date: 2022-05-10
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

[0004] The embodiment of the present invention provides a dual-rotor motor and an air-conditioning unit to solve the technical problem of limited increase in rotor inertia when the axial position of the inner and outer motors is the same in the dual-rotor motor in the prior art

Method used

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0026] Such as figure 1 As shown, the dual-rotor motor in the prior art includes a housing 5, and a stator 3 is fixedly arranged in the housing 5, and an inner winding and an outer winding are respectively installed on the inner side and the outer side of the stator 3. Correspondingly, in the housing 5 there are An inner rotor 1 and an outer rotor 2 are respectively installed, the inner rotor 1 is located inside the stator 3, the outer rotor 2 is located outside the stator 3, the inner rotor 1 is connected to the bottom of the outer rotor 2, and outputs torque through the rotating shaft 4. In ...

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Abstract

The application provides a double-rotor motor and an air-conditioning unit. The double-rotor motor includes a stator, an outer rotor and an inner rotor, the stator is fixedly arranged, and the stator forms an outer stator section and an inner stator section connected along its height direction, the outer rotor is arranged outside the outer stator section, and the inner rotor is arranged on the inner stator section inside. By applying the technical solution of the present invention, only the stack height of the outer rotor with a larger radius can be increased, and the increased cost is less, but the resulting moment of inertia increases significantly. Increase the moment of inertia of the motor, reduce the torque fluctuation of the low-frequency operation of the compressor, reduce the current fluctuation of the low-frequency operation, reduce the harmonic content of the current, make the compression speed at low-frequency operation more stable, and improve the efficiency of the compressor at low-frequency operation.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K16/00H02K1/16H02K1/27H02K1/274H02K1/279
CPCH02K16/02H02K1/165H02K1/2706H02K1/274H02K1/2786H02K2213/03
Inventor 刘贤义
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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