Motor core structure and air-conditioning compressor with same

Abstract

The invention provides a motor core structure and an air-conditioning compressor with the same. The motor core structure comprises a main iron core body, a plurality of concave parts and lug bosses, wherein the concave parts are arranged on the outer peripheral surface of the main iron core body; the plurality of concave parts sink towards the center of the main iron core body along the radial direction respectively; the lug bosses are located in the concave parts; and a clearance is formed between the top surface of each lug boss and a shell of a motor. According to the motor core structure employing the technical scheme provided by the invention, the stress on the contact surface of the main iron core body and a main shell can be absorbed and guided; the stress is transferred to the lug bosses for accumulation; and the stress is eliminated on the outer peripheral edge of the motor core, so that the influence on magnetic domain distortion in a steel sheet of the motor core caused by the stress is reduced to the maximal extent; the eddy current loss caused by magnetic field turbulence is improved; the magnetic property of the motor is improved; motor heating is comprehensively lowered; and the power consumption is lowered.

Description

technical field [0001] The invention relates to the field of air-conditioning equipment, in particular to a motor iron core structure and an air-conditioning compressor having the same. Background technique [0002] At present, in the production and manufacturing process of air-conditioning compressors, the joint between the compressor motor and the main shell usually adopts a shrink-fit interference fit. Stress concentration, which leads to distortion of the magnetic domain arrangement inside the motor iron core, which in turn leads to deterioration of motor performance, and at the same time causes serious heating of the iron core, reducing the operating efficiency of the motor and compressor. see figure 1 with figure 2 , in order to improve the motor stress in the prior art, in addition to designing a suitable amount of interference, by designing a corresponding special structure for absorbing and transferring stress at the joint surface between the outer periphery of t...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a motor iron core structure and an air-conditioning compressor with it, to at least solve the poor effect of stress relief in the special structure designed at the joint surface between the outer periphery of the motor iron core and the main casing in the prior art technical issues

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