Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 1998.04a
  • /
  • Pages.575-581
  • /
  • 1998
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

Source Identification and Reduction of Noise for the Outdoor Unit of Room Air Conditioner

실외기 소음원 규명 및 소음저감

  • 서상호 (LG전자 리빙시스템연구소) ;
  • 이근동 (LG전자 리빙시스템사업부) ;
  • 이내영 (LG전자 리빙시스템연구소) ;
  • 진심원 (LG전자 리빙시스템연구소)
  • Published : 1998.04.01
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Abstract

The noise sources in the outdoor unit of RAC(Room Air Conditioner) are identified by the sound intensity method. The main noise sources are compressor noise and fluid noise which is caused by the fan, heat exchanger and shroud. First, the fluid noise is reduced through the design ol new fan and shroud with high flow rate and low noise, reduction of the system resistance by rearrangement of heat exchanger, and optimization of the complex parameter between the fan and shroud. Next, in order to reduce the compressor noise, the new shape of compressor mount and sound-proof material was applied. As a result, the overall noise was reduced by 4-5dB(A).

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