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Low-noise device for centrifugal compressor of turbocharger

A technology of centrifugal compressors and turbochargers, which is applied to the components of pumping devices for elastic fluids, machines/engines, mechanical equipment, etc., can solve the problems of low noise, high cost, and space requirements, and achieve improved Efficiency, ease of processing, and the effect of reducing the cost of replacement

Inactive Publication Date: 2012-07-18
大同北方天力增压技术有限公司
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing turbocharger compressor has low noise and high cost, and needs space, so as to provide a turbocharger compressor that reduces the cost of the compressor low noise device and saves the installation space at the same time. noise device

Method used

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  • Low-noise device for centrifugal compressor of turbocharger
  • Low-noise device for centrifugal compressor of turbocharger
  • Low-noise device for centrifugal compressor of turbocharger

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Embodiment Construction

[0020] figure 1 It shows the sectional view of the structure of the turbo compressor compressor in the prior art along its axis; the compressor impeller 1 passes through one end of the shaft 10 and is fixed with a nut 11, and fresh air enters the impeller 1 channel 6 along the axial direction 8 for compression , and then diffuse in the diffuser 2, and finally enter the gas collection chamber 12 formed by the compressor casing 4. The intake shroud 3 is installed in the compressor housing 4 and arranged at the air inlet, forming part of the air channel 14 with the compressor housing, and slotting 13 at the radial position corresponding to the impeller 1, thereby forming Complete secondary air duct. Since the airflow velocity in front of the compressor impeller is as high as 100-150m / s, the inlet size φA of the compressor shell is much larger than the size φB of the airflow shroud 3, after the airflow violently impacts the shroud 3, impact noise is generated, and induced and Th...

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Abstract

The invention discloses a low-noise device for a centrifugal compressor of a turbocharger, aiming at overcoming the defect of serious airflow turbulence after an air guide wheel air incoming re-circulating structure is adopted by a turbocharger with the lowest cost so as to lower noise and improve the efficiency of the compressor. The low-noise device has the following technical scheme that based on the prior art, a space is formed between a shell 4 of an air compressor and an air guide sleeve 3, and a flow guide cover 15 is arranged in the low-noise device so as to form secondary air inlet passages 7 and 14; and arc flow guide treatment is carried out at the turning of the channel of related parts, and the air guide sleeve 3 is provided with 3 grooves or 3-20 circular holes at the radial circumference corresponding to an impeller 1 of the air compressor. The low-noise device can be widely applied to compressors to lower the noise and has wide application prospect.

Description

technical field [0001] The invention belongs to the field of noise reduction devices, in particular to a compressor low noise device. Background technique [0002] As turbochargers operate at higher speeds and compression ratios, the airflow into the compressor becomes more unstable and presents numerous problems. Intake noise became one of the prominent issues. The ear-piercing airflow sound is amplified with the gradual increase of the speed of the turbocharger compressor. The noise not only reduces the efficiency of the compressor, but also seriously pollutes the environment of the workplace and damages the health of the surrounding personnel. [0003] In order to reduce the intake noise of the supercharger compressor, various measures and methods have been taken. For example, install a single-stage muffler at the air inlet of the compressor, and the maximum noise reduction that can be obtained is 50-60dB; The effect of reducing the rotating noise of the compressor in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/66
Inventor 刘文奇韩国强朱爱国武锋
Owner 大同北方天力增压技术有限公司
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