가정용 산소발생기를 위한 스월링 유동을 이용한 고성능 흡기 소음기 개발

다국어 초록 (Multilingual Abstract)

High performance intake silencer with low pressure drop are developed for a household oxygen generator. First, the acoustic power of the target oxygen generator are experimentally evaluated according to ISO code. Then, the transmission loss of and the flow characteristics inside the existing intake silencer are predicted and analyzed. On a basis of these results, two intake silencers are proposed, which are designed to induce the swirling flow inside the intake silencer and thus to reduce the flow loss. The predicted TL and the pressure drop for these two new silencers are compared to the existing one, which shows that the proposed ones have higher TL as well as low pressure drop. The reason for these improvements are explained by investigating the flow characteristics of the new silencers in detail.

참고문헌 (Reference)

1 정경훈, "압축기용 흡입머플러의 성능개선에 관한 연구" 한국정밀공학회 19 (19): 000-000, 2002

2 이성원, "비순정품 자동차 머플러의 성능개선" 한국산학기술학회 10 (10): 2602-2608, 2009

3 Bilawchuk, S., "Comparison and Implementation of the Various Numerical Methods used for Calculating Transmission Loss in Silencer Systems" 64 : 903-916, 2003

4 Joo, J.-M., "Acoustic and Flow-field Analysis of Suction Muffler in Compressor" 11 (11): 1162-1167, 2001

5 Seo, Y.-S., "Acoustic Analysis of a Duct with Mean Flow by Use of FEM" 12 (12): 1026-1031, 2002