Low-noise aluminum shell motor with sound absorbing cover

Abstract

The invention discloses a low-noise aluminum shell motor with a sound absorbing cover, and relates to the technical field of motors. The low-noise aluminum shell motor comprises a motor shell; a motorrotor is arranged in the motor shell; one end of the motor rotor extends to one side of the outer wall of the end part of the motor shell and is rotationally connected with the motor shell; the tailend of the motor shell is fixedly connected with a noise reduction device; a cooling device is arranged inside the noise reduction device; and the tail end of the noise reduction device is fixedly connected with an air inlet and sound insulation device. The tail of the motor shell is fixedly connected with a sound insulation frame body, and a noise reduction block is arranged on the inner wall ofthe sound insulation frame body; a heat dissipation fan which rotates at a high speed can be subjected to sound insulation and noise reduction operation through the arrangement of the noise reductionblock; and the noise reduction block is made of a porous material with numerous tiny open pores from the surface to the interior for acoustic wave attenuation, so that the noise reduction and energy absorption effects are achieved and the noise generated by high-speed running of a heat dissipation part of the high-speed motor under the high-speed rotation condition can be reduced.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a low-noise aluminum shell motor with a sound-absorbing cover. Background technique [0002] A high-speed motor usually refers to a motor whose speed exceeds 10000r / min. Because of their high speed and volume much smaller than ordinary motors, they are connected to the prime mover, canceling the traditional deceleration mechanism, and the high-speed motor has a small moment of inertia. Therefore, they have high motor power density, can effectively save materials, and have high transmission efficiency. Noise is low. [0003] The high-speed motor needs to dissipate heat inside it during the working process. In the case of high-speed operation, the cooling motor needs a high speed ratio to increase the amount of air circulation for rapid cooling operation. However, the cooling motor drives the fan to run at high speed. , the blades of the fan will produce a large decibel noise. Th...

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Problems solved by technology

[0003] The high-speed motor needs to dissipate heat inside it during the working process. In the case of high-speed operation, the cooling motor needs a high speed ratio to increase the amount of air circulation for rapid cooling operation. However, the cooling motor drives the fan to run at high speed. , the blades of the fan will produce a large decibel noise

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