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논문 기본 정보

자료유형
학술저널
저자정보
장준영 (Pusan National University) 김태훈 (LG Electronics) 탁언수 (Pusan National University) 정의봉 (Pusan National University) 안세진 (Uiduk University)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제29권 제5호(통권 250호)
발행연도
2019.10
수록면
653 - 662 (10page)
DOI
10.5050/KSNVE.2019.29.5.653

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This paper provides an analysis of the characteristics of the noise of components that affect the sound quality of oil-less refrigerators and suggests ways to effectively improve the sound quality. As the sound quality of refrigerators is determined by the characteristics of the various components and the path through which the noise is transferred, it is necessary to first analyze the characteristics of the noise generated by the components. Therefore, after measuring the noise of each part, we conducted a contribution analysis of the sound quality of each noise source. As a result, the oil-less compressor was found to be the dominant part of the sound quality of the refrigerator, while the high-frequency noise of the compressor is the main cause of poor sound quality. Then, to improve the sound quality by reducing the high-frequency noise of the compressor, we changed the transfer path of the noise using sound-absorbing and -insulating material and predicted the effect of the sound quality through a pressure transmissibility test. As a result of verification from actual operation, the sound quality of the refrigerator was improved most by the reduction of the sharpness and criteria of declination when the absorbent was attached to the surrounding walls of the compressor. Finally, the overall SPL decreased by 2.95 dBA, and the sound quality score was improved by 1.83.

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ABSTRACT
1. 서론
2. 시험 방법
3. 시험 결과
4. 결론
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