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Research on low frequency vibration of rotary compressor.

Number: pap. 1424

Author(s) : WEN Z., ZHANG Y., ZHANG R., et al.

Summary

Low frequency noise which sounds annoying is easy to penetrate walls. To a certain domestic air-conditioner, the abnormal low frequency noise of the outdoor unit is detected when the compressor operating at certain low RPM's. Experiment and simulation analysis are taken, and it is determined that the 1st order rigid modal resonance of the accumulator is excited at certain operating RPM's which causing structure-borne noise passes through suction pipes. To solve this problem, two schemes are produced to optimizing the connection property between the accumulator and compressor shell: 1) increasing connection damping to reduce resonance region response; 2) increasing connection stiffness in order to promote modal frequency to avoid being excited resonance. Finally, the vibration experimental verification of the two schemes is carried out, and scheme 2 is better than scheme 1 which is also better than the original one, more than 30m/s^2 reduced .

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Pages: 8

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Details

  • Original title: Research on low frequency vibration of rotary compressor.
  • Record ID : 30024339
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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