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

  • 2008.04a
  • /
  • Pages.674-681
  • /
  • 2008
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

Study on the Noise Reduction in the Rotary Compressor using BLDC Motor

BLDC 모터를 적용한 로터리 컴프레서 소음 저감에 관한 연구

  • 김진수 ((주)LG 전자 DA 본부 연구소) ;
  • 임경내 ((주)LG전자 컴프모터 연구실) ;
  • 구세진 ((주)LG전자 컴프모터 연구실) ;
  • 이장우 ((주)LG전자 DA본부 연구소) ;
  • 전시문 ((주)LG전자 DA본부 연구소)
  • Published : 2008.04.17
Download PDF
⟨ Previous Next ⟩

Abstract

The main noise source of the BLDC rotary compressor for air conditioner was analyzed by using the measurement of noise and vibration, noise contour, and experimental modal analysis. The source is presumed to the mechanical resonance excited by the electromagnetic attractive force of the BLDC motor. To reduce the excessive noise of the BLDC rotary compressor due to the mechanical resonance, air-gap was enlarged. Its validation was conducted by the analysis of the electromagnetic attractive force which is generated by the BLDC motor. By enlarging the length of air-gap, the noise in the compressor and air conditioner was significantly improved by 2.5dB(A) and 4.5dB(A), respectively.

Keywords