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http://dx.doi.org/10.5050/KSNVN.2008.18.9.920

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

Kim, Jin-Soo ((주)LG전자 DA 본부 연구소)
Lim, Kyung-Nae ((주)LG전자 DA 본부)
Ku, Se-Jin ((주)LG전자 DA 본부)
Lee, Jang-Woo ((주)LG전자 DA 본부 연구소)
Jeon, Si-Moon ((주)LG전자 DA 본부 연구소)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.9, 2008 , pp. 920-929 More about this Journal
Abstract
The main noise and vibration 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 enlargement and structural dynamic modification were applied in this paper. Its validations were conducted by the analysis of the electromagnetic attractive force which is generated by the BLDC motor and by the measurement of noise and vibration of the BLDC rotary compressor. By enlarging the length of air-gap and conducting the structural dynamic modification, the noise and vibration in the compressor was significantly improved by 4.5 dB(A) and 56 percent, respectively.
Keywords
Electromagnetic Attractive Force; Modal Analysis; Air-gap; Rotary Compressor; Noise Contour; Eccentricity; Structural Dynamic Modification;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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