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특허 상세정보

Method and apparatus for a fan noise controller

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F01D-025/04   
미국특허분류(USC) 415/119 ; 415/914
출원번호 US-0231504 (1999-01-14)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Snell & Wilmer L.L.P.
인용정보 피인용 횟수 : 18  인용 특허 : 4
초록

A fan system, such as a turbofan, marine propeller, or a cooling fan, includes a fan noise control system for reducing noise generated by the fan system. The noise control system may be configured to reduce either broadband noise, blade-passage noise, or both. In particular, the fan noise control system suitably includes a pre-swirl generator configured to provide a layer of fluid upstream from the fan blades. The layer swirls in the direction of the fan's rotation, reducing the angular velocity differential between the fan blades and the incident fluid....

대표
청구항

[ What is claimed is:] [1.]1. A fan noise control system for controlling noise generated by a fan having an upstream direction, a downstream direction, and an interior surface defining a fluid flow channel, said fan noise control system comprising:a pre-swirl generator configured to reduce fan noise by providing a layer of rotating fluid upstream of the fan, wherein the pressure of said layer of rotating fluid is substantially uniform at every angle in a plane parallel to the lane of rotation of said fan, wherein said layer of rotating fluid follows said...

이 특허를 인용한 특허 피인용횟수: 18

  1. Tuan, Yen. Aero-acoustic aviation engine inlet for aggressive noise abatement. USP2011067967105.
  2. Yoavaphankul, Metha. Apparatus for creating a swirling flow of fluid on horizontal plane. USP20181010107316.
  3. Guemmer,Volker. Blade of a turbomachine with block-wise defined profile skeleton line. USP2008097419353.
  4. Barnett, Mark; Graf, Martin; Raw, John A.; Sharma, Om; Sprout, William D.. Casing treatment for a fluid compressor. USP2003096619909.
  5. Palko, John. Compressor stage of a turbocharger with flow amplifier. USP2016129528431.
  6. Hathaway,Michael D.; Strazisar,Anthony J.; Suder,Kenneth L.. Endwall treatment and method for gas turbine. USP2006077074006.
  7. Lockwood, Clive. Engine arrangement. USP2011098011172.
  8. Su, Fu-Cheng; Liao, Yuan-Liang; Lee, Jyh-Ren; Liao, Yi-Hong. Fan noise canceling system. USP2012098259955.
  9. Shah, Hemant S.; Hollingshead, John Stuart; Wang, John; Thawani, Prakash Tuljaram; Kosik, Richard Charles; Kumar, Mukesh. Fan shroud with built in noise reduction. USP2005056896095.
  10. Disimile, Peter. Fluid flow noise mitigation structure and method. USP2015109169750.
  11. Graziosi, Paolo; Kirtley, Kevin; Mani, Ramani. Fluidic chevrons and configurable thermal shield for jet noise reduction. USP2009097581692.
  12. Stangeland,Maynard L.. Inducer tip vortex suppressor. USP2006087097414.
  13. Chen, Po Fan; Lee, Chin Yi; Tsai, Kun Tsung; Tseng, Kuo Cheng. Marine vehicle having pre-swirl generator for generating pre-swirl flow. USP2010097802533.
  14. Gupta, Anurag; Miller, Scott Michael; Maeder, Thierry. Microstructures for reducing noise of a fluid dynamic structure. USP2013068460779.
  15. Todorovic, Predrag. Noise-reduced aircraft engine and method for reducing noise emissions of an aircraft engine. USP2012078220586.
  16. Duane C. McCormick ; Wesley K. Lord. Passively driven acoustic jet controlling boundary layers. USP2002046379110.
  17. Luo, Huageng; Baehmann, Peggy Lynn; Barnes, Gary Randall; Naumiec, Robert John; Dawson, Richard Nils. System and method for noise cancellation. USP2010047706547.
  18. Tang, Punan; Jasso, Thomas P.; Chowdhury, Mohammed I.. System and method for noise suppression. USP2011027891464.