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Sound and vibration control methodology based on source and path identification on household refrigerators.

Author(s) : BAARS E., SANTINI O.

Summary

This paper presents a methodology to identify and control the main noise sources and paths on refrigerators. The methodology consists on the split the mechanical system into three different groups: sources, transmission paths and radiators. Some investigation techniques, like acoustics holography, operating deflection shapes, modal analysis and compressors measurements (vibration, gas pulsation and sound power) were used to investigate the contribution of each group and its interaction. This technique allows creating an energy flow map and so identifies sources, paths and its respective influences on the final sound radiation performance. Sound quality tools (psychoacoustics metrics, loudness, sharpness and jury analysis) were used to validate the proposed solution. The holography technique to identify sources is explored and a typical application example of this methodology is showed for a household refrigerator.

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Pages: ICR07-B2-1601

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Details

  • Original title: Sound and vibration control methodology based on source and path identification on household refrigerators.
  • Record ID : 2008-0243
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/07/21

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