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Sound attenuation structure of vacuum pump and vacuum pump

A vacuum pump and noise reduction technology, which is applied in the direction of pumps, pump components, variable displacement pump components, etc., can solve the problem of high noise of vacuum pumps, and achieve the effect of reducing noise and reducing sound energy

Inactive Publication Date: 2017-07-28
嘉兴东唐汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned status quo, the main purpose of the present invention is to provide a noise-absorbing structure of a vacuum pump and a vacuum pump to overcome the problem of high noise of vacuum pumps in the prior art

Method used

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  • Sound attenuation structure of vacuum pump and vacuum pump
  • Sound attenuation structure of vacuum pump and vacuum pump
  • Sound attenuation structure of vacuum pump and vacuum pump

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Embodiment Construction

[0027] Hereinafter, preferred embodiments of the noise reduction structure of the vacuum pump and the vacuum pump according to the present invention will be described with reference to the accompanying drawings.

[0028] The vacuum pump involved in the present invention includes a pump assembly and a pump accommodation chamber for accommodating the pump assembly. Wherein, the pump assembly can adopt any suitable structure in the prior art, for example, the structure of the pump cavity of the vacuum pump disclosed in the patent document CN104131979A can be adopted, and other structures can also be adopted, as long as the pumping function can be completed.

[0029] Likewise, the overall structure of the vacuum pump of the present invention can also adopt any suitable structure in the prior art, for example, the overall structure of the vacuum pump disclosed in the patent document CN104131979A can be adopted, that is, it can include a motor, a mounting plate and a noise reduction ...

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Abstract

The invention discloses a sound attenuation structure of a vacuum pump. The vacuum pump comprises a pump assembly and a pump containing cavity used for containing the pump assembly. The sound attenuation structure comprises sleeve-like parts. The sleeve-like parts are mounted in the p ump containing cavity. The internal space of the pump containing cavity is divided into a first space and a second space. A gas outlet of the pump assembly is located in the first space. An exhaust port of the pump containing cavity is located in the second space. The sidewalls of the sleeve-like parts are provided with through holes for communicating the first space with the second space. As the through holes are quite small relative to the volume of the second space, the second space and the through holes form a resistance sound attenuation structure. Sound waves are propagated in the resistance sound attenuation structure to generate reflection and interference so that sound energy can be reduced, and the purpose of sound attenuation can be achieved. Accordingly, the sound attenuation structure of the vacuum pump can effectively lower noise of the vacuum pump. The invention further discloses the vacuum pump.

Description

technical field [0001] The invention relates to the technical field of fluid machinery, in particular to a sound-absorbing structure of a vacuum pump. The invention also relates to a vacuum pump. Background technique [0002] Vacuum pumps will inevitably produce noise during operation, which will have adverse effects on the surrounding environment. Take the electric vacuum pump for automobile brake boosting as an example, if it cannot effectively reduce noise, the overall noise level of the automobile will remain high, thus affecting the quality of the automobile. [0003] Vacuum pumps in the prior art, such as vane vacuum pumps, are generally provided with a muffler. For example, the vacuum pump disclosed in Chinese patent document CN104131979A is provided with a muffler and a front muffler to reduce the noise of the vacuum pump. Nevertheless, the vacuum pumps in the prior art still generally have the problem of relatively high noise. [0004] Therefore, it is one of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00F04B37/14
CPCF04B39/0027F04B37/14
Inventor 任钺曾雪龙贾政
Owner 嘉兴东唐汽车科技有限公司
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