Small high-speed motor rotor for driving compressor

Abstract

The invention discloses a small high-speed motor rotor for driving a compressor. The rotor comprises a solid rotor rotating shaft and rotor cage bars, wherein the rotor cage bars are distributed circumferentially and uniformly, and the solid rotor rotating shaft and the rotor cage bars are integrally connected by three-side connecting seams; the solid rotor rotating shaft adopts alloy steel 25Cr2Ni4Mov, is a constituent part of a rotor magnetic path and needs to bear mechanical stress during working of the rotor; the rotor cage bars are formed by T2 steel bars with relatively good electric conductivity. The small high-speed motor rotor can run at a high speed, has the geometric dimension far smaller than that of a medium and low speed motor with the same output power, and has the characteristics of small rotary inertia, quick dynamic response, high transmission efficiency, good stability and the like.

Description

technical field [0001] The invention relates to a motor rotor, in particular to a small high-speed motor rotor for driving a compressor. Background technique [0002] A high-speed motor usually refers to a motor whose speed exceeds 10000r / min. It has a high speed and a high power density, but its geometric size is much smaller than that of a medium-low speed motor with the same output power, so it can effectively save materials; at the same time, the moment of inertia of a high-speed motor is relatively small. Small, so the dynamic response is fast, and the high-speed motor can be directly connected with the prime mover or load, eliminating the traditional mechanical transmission device, which can effectively reduce the equipment footprint and noise, and improve the efficiency of the transmission system. At present, the research on high-speed motors has become a research hotspot in the field of international electrotechnics, and has been fully applied to high-speed grinding ...

AI Technical Summary

Problems solved by technology

[0003] Due to the characteristics of low power density, large geometric size, and the need for traditional mechanical transmission devices, conventional motor rotors have disadvantages such as large equipment footprint, high noise, and low transmission system efficiency in engineering applications.

However, with the development of the modern motor industry, the requirements for motor speed are getting higher and higher. Conventional laminated rotors have been unable to withstand the centrifugal force generated by high-speed rotation. Therefore, it is necessary to design and develop new high-speed motor rotors in a timely manner to adapt to modern industries. development of

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