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Numerical and experimental research of noise reduction due to low frequency pressure fluctuation of rotary compressor.

Number: pap. 1166

Author(s) : ZHANG C., DENG Z., SHEN H., et al.

Summary

The mechanism of the low frequency pressure pulsation at around 173Hz and noise of a typical rotary compressor were analyzed in this work. According to the past experiences and the test results of the rotary compressor, the rotational flow caused by the balance block of the shaft in the top chamber should be the major reason of the low frequency pressure pulsation at the frequency. In order to improve the pressure pulsation problem of the rotary compressor, an effective solution was proposed in this work, which adds a guide pipe at the outlet of bearing hole in the rotary compressor in order to reduce the influence caused by the balance block and to improve the pressure pulsation problem. Numerical and experimental methods were used to validate the effectiveness of the proposed solution. According to the pressure pulsation and noise test results, the related low frequency pressure pulsation at around 173Hz and the noise level at the frequency were improved obviously as compared with the original rotary compressor. The work conducted in this paper can provide a reference for the similar pressure pulsation and noise problem in rotary compressors.

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Pages: 7

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Details

  • Original title: Numerical and experimental research of noise reduction due to low frequency pressure fluctuation of rotary compressor.
  • Record ID : 30024234
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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