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Acoustic improvements for a new generation of variable speed compressors.

Number: pap. 1307

Author(s) : VENDRAMI C. E., PELLEGRINI C., HATTORI M., et al.

Summary

Variable speed reciprocating compressors (VSRC) present some advantages comparing to single speed compressors, mainly in terms of energy consumption and noise. Once the acoustic performance is analyzed, it is verified that the compressor running most of the time at frequencies lower than the ones of the electric net imply lower sound level for VSRC and, therefore, many home appliances manufacturers direct their use to the premium refrigerator models. Following a general market trend for comfort items, home appliances noise is becoming more and more important nowadays, implying even VSRCs demand acoustic improvements in order to reduce the refrigerators sound level. In such a scenario, this paper presents numerical and experimental studies carried out in an existing platform of variable speed compressors, identifying some sources and transmission paths associated to the overall sound level of the compressor itself and to a representative refrigerator model. Based on the foreseen opportunities, a design optimization focusing on sources and paths is presented and, as a result, the acoustic performance of the new generation is compared to the performance of the current version of this variable speed compressor platform.

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Format PDF

Pages: 10 p.

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Details

  • Original title: Acoustic improvements for a new generation of variable speed compressors.
  • Record ID : 30013972
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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