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Permanent-magnet DC brushless motor of refrigerator compressor

A refrigerator compressor, permanent magnet DC technology, applied in electromechanical devices, electrical components, magnetic circuit static parts and other directions, can solve the problems of single model, waste of energy, complex process, etc. high effect

Inactive Publication Date: 2010-06-23
宁波海诚电器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional refrigerator compressor motor is an induction motor started by resistance. The power required by the refrigerator compressor is relatively small, and the model is relatively simple compared with the refrigerator motor. It is mainly a reciprocating compressor. The capacity of a single motor generally does not exceed 0.5KW, and the efficiency is generally 55. %~58%, the rotor die-casting is strict, the process is complicated, and energy is wasted

Method used

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  • Permanent-magnet DC brushless motor of refrigerator compressor
  • Permanent-magnet DC brushless motor of refrigerator compressor
  • Permanent-magnet DC brushless motor of refrigerator compressor

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] A permanent magnet DC brushless refrigerator compressor motor, which includes a rotor, a stator, and a circuit control system. The outer edge of the concentric groove shape has a radius of curvature of 43mm, the outer radius of the choke at the bottom of the concentric groove is 29.5mm, and the inner base circle radius of the choke is 27.5mm. As an improvement, the winding distribution on the stator adopts fractional concentrated winding, and the pole pitch of each pole of each phase is 1 / 2. The rotor adopts a built-in magnetic structure.

[0023] Other structural principles are similar to the traditional rotor, stator, and circuit control system, and will not be described in depth in detail.

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Abstract

The invention relates to a permanent-magnet DC brushless motor of a refrigerator compressor. The permanent-magnet DC brushless motor comprises a rotor, a stator and a circuit control system, and is characterized in that the stator is of the shape of a concentric circular groove with the same tooth width and the same yoke part, the curvature radius of the external side of the stator is within 43plus or minus 1mm, the radius of the external side of the yoke part at the bottom of the concentric circular groove is within 29.5plus or minus 1mm and the base radius of the internal side of the yoke part is within 27.5 plus or minus 1mm. Thereby, the invention has the advantages that the magnetic paths are even, the magnetic-flux leakage is reduced and the output torque is improved.

Description

technical field [0001] The invention relates to a permanent magnet direct-current brushless compressor motor, in particular to the technical field of simply producing an energy-saving motor for a compressor. Background technique [0002] The traditional refrigerator compressor motor is an induction motor started by resistance. The power required by the refrigerator compressor is relatively small, and the model is relatively simple compared with the refrigerator motor. It is mainly a reciprocating compressor. The capacity of a single motor generally does not exceed 0.5KW, and the efficiency is generally 55. % to 58%, the rotor die-casting is strict, the process is complicated, and energy is wasted. [0003] With the shortage of energy sources, high-efficiency refrigerator compressors (with a COP value exceeding 1.5) have gradually become mainstream. From January to May 2004, among the products produced by Embraco, Guangzhou Refrigerator, Shanghai Zanussi, Tianjin Zanussi, Hu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/00H02K1/16H02K1/27
Inventor 张唯
Owner 宁波海诚电器有限公司
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