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차량용 공조장치 팬의 BPT소음과 스크롤 케이스와의 연관성에 대한 실험적 연구
김진국(Jinkuk Kim),홍선주(Seonjoo Hong),박영덕(Youngduk Park) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
This paper is the experimental study that present the relation BPT(Blade Passing frequency of Tonality) noise with scroll of Blower unit of HVAC system. Also we found primary position noise of BPT which be affected by the air flow of wheel or fan. Main effected position during wheel operation is identified by bottom of blade even though changing of wheel design and shape and expansion starting point of scroll case. According to this study could be easily approached and improved obviously BPT noise by optimal design of scroll case of HVAC system.