Motor rotors, motors, air conditioners

Abstract

The invention provides a motor rotor, a motor and an air conditioner, wherein the motor rotor comprises an inner iron core and an outer iron core, a first gap is formed between the outer iron core and the inner iron core, and the outer iron core has a space close to the inner iron core. The first axial through hole and the second axial through hole far away from the inner iron core also include a fixing body and a shock absorbing body, and the fixing body has a first fixing part passing through the first axial through hole and passing through the first gap the second fixing part, the shock absorbing body has a first shock absorbing part passing between the second fixing part and the inner iron core and a second shock absorbing part passing through the second axial through hole. According to the present invention, the fixing body can form a reliable axial and radial positioning of the outer iron core through the first fixing portion, and the shock absorbing body improves the shock absorption of the entire motor rotor through the first shock absorbing portion and the second shock absorbing portion. This effectively avoids the problems of poor dynamic balance and poor strength caused by the concentration of the weight of the motor rotor on the outer iron core in the prior art, and improves the overall dynamic balance and stability of the motor rotor.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a motor rotor, a motor and an air conditioner. Background technique [0002] With the guidance of the government's energy-saving policy and the needs of market development, DC-based fans of household appliances have gradually become a trend. At present, the brushless motors used in the industry are all radial magnetic field surface mount structures, which have low motor power density and low material utilization. [0003] Due to the rising market price of motor raw materials, high power density motors have become the development trend of brushless DC motors. In permanent magnet motors, in order to improve the motor performance, it is usually necessary to obtain higher magnetic performance of the rotor. Under the limited structure, compared with the surface-mounted and embedded radial rotors, the built-in tangential rotor structure can effectively increase ...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention provides a motor rotor, a motor, and an air conditioner, which can overcome the deficiencies of the related art, such as the lack of shock-absorbing support and positioning of the outer iron core, poor dynamic balance of the rotor, and poor shock-absorbing effect.

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