A Method for Reducing the Sound Radiated by a Fan Mounted to an Enclosure
A novel fan noise reduction scheme significantly decreases the sound power radiated by axial fans when mounted to equipment enclosures, improving cooling efficiency without unwanted noise.
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
TRL: 6
Intellectual Property:
Provisional-Patent, 2005-05-25, United States
Utility Patent, 2006-05-09, United States
NATL-Patent, 2006-05-17, Republic of Korea
NATL-Patent, 2006-05-17, China
NATL-Patent, 2006-05-17, Japan
PCT-Patent, 2006-05-17, WO
Keywords: Axial fan noise reduction, electronics cooling noise, fan sound power reduction, enclosure fan noise, monopole-like fan radiation, Purdue fan noise research, noise-reduced axial fans, tech marketing website search terms, fan noise mitigation, acoustic fan solution., HVAC, Mechanical Engineering, Noise Cancellation, Sound Barriers