发明授权
- 专利标题： Dipole flow driven resonators for fan noise mitigation
- 专利标题（中）： 用于风扇噪声减轻的偶极流驱动谐振器
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申请号： US12483601申请日： 2009-06-12
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公开(公告)号： US07992674B2公开(公告)日： 2011-08-09
- 发明人: Lee J. Gorny , Gary H. Koopmann , Dean E. Capone
- 申请人： Lee J. Gorny , Gary H. Koopmann , Dean E. Capone
- 申请人地址： US PA University Park
- 专利权人： The Penn State Research Foundation
- 当前专利权人： The Penn State Research Foundation
- 当前专利权人地址： US PA University Park
- 代理机构： Gifford, Krass, Sprinkle, Anderson & Citkowski, P.C.
- 代理商 Douglas L. Wathen
- 主分类号： F01N1/02
- IPC分类号： F01N1/02
摘要：
A fan system includes a rotor supported for rotation about a fan axis. The rotor has a central hub and a plurality of blades each extending outwardly from the hub to a tip. The rotor blades define a rotor plane perpendicular to the fan axis. A first acoustic resonator has an opening disposed on a first side of the rotor plane and a second acoustic resonator has an opening disposed on a second side of the rotor plane. The acoustic resonators are configured to provide a dipole resonator system operable to at least partially reduce a blade pass frequency tone in an upstream and a downstream direction simultaneously.
公开/授权文献
- US20090308685A1 DIPOLE FLOW DRIVEN RESONATORS FOR FAN NOISE MITIGATION 公开/授权日：2009-12-17
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