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High frequency aerodynamic noise improvement of variable speed scroll compressor by transient CFD analysis.

Number: 1183

Author(s) : LIN J., ZHENG K., RONG Q., WANG L.

Summary

With the variable speed scroll compressor operation frequency increasing, the compressor noise also rises. Reducing the compressor noise becomes one of the main challenges of new compressor development stage. In this paper, based on spectrum and visualization analysis, high frequency noise is in the high-pressure cavity of scroll compressor. By pressure pulsation test, the high frequency noise is caused by gas pulsation in the discharge port area of scroll set. New mufflers are designed to stabilize the gas pulsation of discharge port area and reduce the high frequency noise. By computational fluid dynamics method, the optimal muffler is chosen by the comparison of pressure pulsation simulation result. The muffler prototype is assembled in the target scroll compressor and tested with different frequency. Compared with original compressor without muffler, the compressor noise was reduced significantly, especially for the high frequency band which from 1000Hz to 3150 Hz.

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Pages: 8 p.

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  • Original title: High frequency aerodynamic noise improvement of variable speed scroll compressor by transient CFD analysis.
  • Record ID : 30030273
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Publication date: 2022/07/15

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