Method for Reducing Sound from an Enclosure Mounted Fan

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Track Code	64313
Categories	Mechanical Engineering
Keywords	HVAC Mechanical Engineering Noise Cancellation Sound Barriers
Public Abstract	Axial fans are widely used for electronic cooling, but their use often results in unwanted noise. An axial fan is mounted to an enclosure, the sound radiation pattern becomes monopole-like since only one side of the fan is exposed to the exterior space; thus it radiates more efficiently than the same fan in free space. Purdue University researchers have developed a novel scheme that significantly reduces the sound power radiated by an axial fan mounted to a surface of an enclosure. Advantages: -Significantly reduces noise Potential Applications: -Electronics cooling
People	Bolton, John Stuart (Project leader) Ido, Hiroto Lee, Moohyung Seki, Kenichi
Intellectual Property	Application Date May 17, 2006 Type NATL-Patent Country of Filing China Patent Number ZL 200680018177.8 Issue Date Feb 23, 2011 Application Date May 17, 2006 Type NATL-Patent Country of Filing Japan Patent Number 4685932 Issue Date Feb 18, 2011 Application Date May 9, 2006 Type Utility Patent Country of Filing United States Patent Number 7,762,373 Issue Date Jul 27, 2010 Application Date May 17, 2006 Type NATL-Patent Country of Filing South Korea Patent Number 10-0948310 Issue Date Mar 11, 2010 Application Date May 17, 2006 Type PCT-Patent Country of Filing WO Patent Number (None) Issue Date (None) Application Date May 25, 2005 Type Provisional-Patent Country of Filing United States Patent Number (None) Issue Date (None)
Contact OTC	Purdue Office of Technology Commercialization 1801 Newman Road West Lafayette, IN 47906 Phone: (765) 588-3475 Fax: (765) 463-3486 Email: otcip@prf.org