Browse Prior Art Database

Low Noise Air Moving Chamber for an Electronic Apparatus Enclosure

IP.com Disclosure Number: IPCOM000089028D
Original Publication Date: 1977-Sep-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

DeSilva, DK: AUTHOR [+3]

Abstract

A chamber for housing air moving devices is described which enables movement of large volumes of air through louvered inlets with the maximum possible reduction in acoustic noise emissions from the chamber. The air moving chamber may be located in the top portion of a computer apparatus cabinet with the air flow being used to cool the printed-circuit boards and other components in the lower portion of the cabinet.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Low Noise Air Moving Chamber for an Electronic Apparatus Enclosure

A chamber for housing air moving devices is described which enables movement of large volumes of air through louvered inlets with the maximum possible reduction in acoustic noise emissions from the chamber. The air moving chamber may be located in the top portion of a computer apparatus cabinet with the air flow being used to cool the printed-circuit boards and other components in the lower portion of the cabinet.

Noisy air moving devices 10 and 11 pull in air through louvers 12 and 13 in the cabinet walls and direct it into the lower portion of the cabinet. Vertically extending acoustic walls 14 and 15 are located between the air moving devices 10 and 11 and the louvers 12 and 13 so as to destroy the line of sight between the noise sources and the louvers. These acoustic walls 14 and 15 are made of steel, and act as acoustical reflectors for containing the noise within the chamber. A layer of sound-absorbing foam 16, which is secured to the underside of the removable top cover 17, serves to absorb the noise which is trapped within the chamber.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]