Browse Prior Art Database

Use of Electronics Package As an Air System Muffler

IP.com Disclosure Number: IPCOM000061376D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

McCollum, WE: AUTHOR [+3]

Abstract

Noise reduction in current copier/printer air system designs requires sound mufflers which in turn pose serious space problems. A design is described which utilizes enclosures contai the electronics packaging as mufflers to achieve the desired noise reduction and at the same time provide the necessary cooling of the electronics package.

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Use of Electronics Package As an Air System Muffler

Noise reduction in current copier/printer air system designs requires sound mufflers which in turn pose serious space problems. A design is described which utilizes enclosures contai the electronics packaging as mufflers to achieve the desired noise reduction and at the same time provide the necessary cooling of the electronics package.

The figure illustrates one embodiment of the concept. Two electronics enclosures 10 and 11 are butted at point 12 to provide a continuous air path. Input air from the body of the copier/printer is provided by centrifugal blower 13 ducted to enclosure 10 by means of shroud 9, which serves as a barrier to motor and housing noise, channeling it as well as the air stream noise into the muffler.

Enclosures 10 and 11 are packed with electronics components, major elements of which are indicated by 14 and 15. The electronic layouts are designed to provide maximum feasible air p length 16 and to eliminate line-of- sight air path in order to provide reactive muffling. In addition, the electronics package is designed to pass a relatively large volume of heated air from the copier/printer body to be utilized for cooling electronic components.

Space is allocated where possible for sound absorptive materials such as at 17 in the duct nearest blower 13 and on the inner walls of enclosure 11.

The design of the unit eliminates the need for both a separate electronics cooling fan and a dedicated m...