한국음향학회지 (The Journal of the Acoustical Society of Korea)

  • 제43권5호
  • /
  • Pages.584-591
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  • 2024
  • /
  • 1225-4428(pISSN)
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  • 2287-3775(eISSN)
한국음향학회 (The Acoustical Society of Korea)
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다공판 시스템을 이용한 빌트인 냉장고 저주파 소음 저감

Low-frequency noise reduction in a built-in refrigerator utilizing perforated plate system

  • 김형진 (부산대학교) ;
  • 신정현 (부산대학교) ;
  • 송경준 (부산대학교) ;
  • 김태훈 (LG전자) ;
  • 구준효 (LG전자)
  • HyoungJin Kim ;
  • JeongHyun Shin ;
  • KyungJun Song (School of Mechanical Engineering, Pusan National University) ;
  • Tae-Hoon Kim ;
  • JunHyo Koo
  • 투고 : 2024.07.30
  • 심사 : 2024.09.21
  • 발행 : 2024.09.30
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초록

본 논문은 빌트인 냉장고의 기계실에서 발생하는 저주파 소음을 감소하기 위해 다공판과 흡음재를 이용한 다공판 시스템을 제작 및 설치하여 소음을 개선하는 연구이다. 다공판의 형상 변화를 통해 다공판 시스템의 흡음 대역을 이론적 방법, Finite Element Analysis(FEA), 임피던스 튜브 실험적 방법을 통해 비교 분석하여 최적 형상을 제시하였다. 방사음향파워레벨 시뮬레이션을 통해 다공판 시스템의 설치에 따른 저주파 대역의 Sound Power Level(PWL)이 감소함을 볼 수 있었으며, 반무향실에서의 소음 실험을 통해 다공판 시스템의 효과를 검증하였다.

This paper investigates the reduction of low-frequency noise emitted from the machine room of a built-in refrigerator using perforated plate system composed of perforated panels and sound-absorbing materials. The study employs theoretical methods, Finite Element Analysis (FEA), and impedance tube experiments to compare and analyze absorption characteristics across different shapes of perforated panels, aiming to propose an optimal configuration. Simulation of radiated sound power levels demonstrates a decrease in the low-frequency band of the Sound Power Level (PWL) upon implementing perforated plate system. Experimental noise tests conducted in a semi-anechoic chamber validate the effectiveness of the perforated plate system.

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과제정보

이 논문은 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음.

참고문헌

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