Permanent magnet brushless DC motor vibration and noise suppression device

Abstract

The invention provides a vibration and noise suppression device for a permanent magnet brushless DC motor, comprising: an outer casing, a return pipe and a liquid suction hole; a set of inner deflectors is fixedly connected to the inside of the outer casing; A set of motor main bodies is fixedly connected inside; a set of return plates is fixedly connected to the inner left side of the outer shell; a set of flow accumulation plates is fixedly connected to the inner right side of the outer shell. This device has changed the previous air-cooled cooling method. By adopting the internal circulation liquid cooling structure, the aerodynamic noise of the motor has been reduced. At the same time, the wave-shaped inner deflector and liquid have been used to reduce the transmission of motor vibration and noise. The transmission of electromagnetic noise and mechanical noise is reduced to achieve a good purpose of noise reduction. At the same time, the device has a relatively simple structure, is easy to manufacture, and has low production cost.

Description

technical field [0001] The invention belongs to the technical field of matching motor noise reduction, and more specifically relates to a vibration noise suppression device for a permanent magnet brushless DC motor. Background technique [0002] The permanent magnet brushless motor has excellent speed regulation performance similar to that of the DC motor, and overcomes the shortcomings of commutation sparks and low reliability caused by the mechanical commutation device of the DC motor, and has high operating efficiency, small size and light weight. , so it is widely used in aerospace, electric vehicles, medical equipment, instrumentation, servo systems, CNC machine tools, military equipment, chemical industry, textile and modern household appliances and other fields. Permanent magnet brushless motors generally need to be equipped with cooling fans in applications Heat the motor to prevent the motor from burning out. [0003] For example, application number: CN201010577846...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a permanent magnet brushless DC motor vibration and noise suppression device to solve the problem that although the existing motor can achieve good heat dissipation, the fan is prone to vibration and noise during operation, and the motor itself The vibration noise is also relatively large, which seriously affects the working environment and endangers people's health during use.

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