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Fan noise reduction system and method and fan

A technology of noise reduction system and fan, applied in the direction of machine/engine, mechanical equipment, electromechanical device, etc., can solve the problem of inability to effectively filter out low-frequency noise, and achieve the effect of avoiding poor heat dissipation

Active Publication Date: 2021-06-11
SANY ELECTRIC CO LTD
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Problems solved by technology

[0004] The invention provides a fan noise reduction system, method and fan to solve the defect that low-frequency noise cannot be effectively filtered out in the prior art

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  • Fan noise reduction system and method and fan
  • Fan noise reduction system and method and fan
  • Fan noise reduction system and method and fan

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Embodiment Construction

[0047] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] During the operation of the wind power generating set (hereinafter referred to as "fan"), the main shaft, gearbox, generator and other components will generate a lot of unavoidable noise, which will have a bad impact on the nearby environment.

[0049] At present, the noise reduction method used in the fan cabin is a passive noise reduction method, which is realized by installing a sou...

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Abstract

The invention provides a fan noise reduction system and method and a fan. The fan noise reduction system comprises a microphone, a vibration sensor, a control processing module, a driving module and a secondary sound source, wherein original noise of a noise source is extracted through vibration signals acquired by the vibration sensor, and then the secondary sound source is adopted to conduct noise reduction on the original noise of the noise source, so that noise reduction treatment can be effectively carried out on noise of different frequencies, and meanwhile the problem that heat dissipation is poor due to the fact that a sound insulation device is installed in a traditional method can be solved.

Description

technical field [0001] The invention relates to the technical field of noise control, in particular to a fan noise reduction system, method and fan. Background technique [0002] During the operation of wind turbines, the main shaft, gearbox, generator and other components will generate a lot of unavoidable noise, which will have a bad impact on the surrounding environment. [0003] At present, noise reduction of fans is mostly done by installing sound insulation covers or sound-absorbing panels, but this solution cannot effectively filter out low-frequency noise, and will cause poor heat dissipation of fans. Contents of the invention [0004] The invention provides a fan noise reduction system, method and fan, which are used to solve the defect that low-frequency noise cannot be effectively filtered out in the prior art. [0005] The present invention provides a fan noise reduction system, including: [0006] Microphone, used to collect the noise signal of the noise sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/66F16H57/028H02K5/24
CPCF04D29/663H02K5/24F16H57/028
Inventor 黄斌李建涛符智
Owner SANY ELECTRIC CO LTD
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