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Noise-Reducing V-Bracket Fan Mounting

IP.com Disclosure Number: IPCOM000040193D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Bornhorst, RJ [+details]

Abstract

Fans are a primary source of noise in products. These sound levels are often too loud for office environments. When cooling requires multiple fans, the sound levels increase accordingly. When two fans are mounted at an angle relative to one another, rather than in the same plane, a cancellation of sound is the result. Noise reduction is accomplished with no additional hardware cost. (Image Omitted) Two fans 1 adjacent to each other are mounted on a V-bracket 2 at an angle 3 relative to one another (Fig. 1). This angle 3 causes exhausted air/noise of one fan to move into the path of exhausted air/noise of the adjacent fan (Fig. 2). This interference between exhausted air/noise causes a cancellation effect of noise which results in lower sound power levels.