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Rubber Fan Blade and Hub Support for Acoustic Noise Reduction

IP.com Disclosure Number: IPCOM000033864D
Publication Date: 2004-Dec-30
Document File: 2 page(s) / 183K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that incorporates a rubber fan blade and hub support into the current computer system fan design. Benefits include reducing noise from the fan hub to the peripheral frame.

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Rubber Fan Blade and Hub Support for Acoustic Noise Reduction

Disclosed is a method that incorporates a rubber fan blade and hub support into the current computer system fan design. Benefits include reducing noise from the fan hub to the peripheral frame.

Background

Computer system fans generate noise during operation. The noise passes to the computer chassis through the screw attachment, and the harmonic vibration of the chassis wall magnifies the noise.  The problem is improved by replacing the metal screws with rubber pins, so that the transfer of fan noise to the chassis wall is reduced. Figure 1 shows the current state of art fan blade and fan hub support made of molded plastic.

General Description

Figure 2 shows the disclosed method. Both the fan blade and fan hub support are made of a rubber material, so that the noise generated is absorbed by the blade and the hub support; this reduces the amount of noise that is transferred to the chassis wall.

Advantages

In the disclosed method, the rubber fan blade reduces noise transferred to the fan hub, and the fan hub reduces noise transferred to the fan peripheral frame.

Fig. 1

Fig. 2

Disclosed anonymously