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Browse Prior Art Database

Cooling Electrical Equipment

IP.com Disclosure Number: IPCOM000089604D
Original Publication Date: 1977-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Gaunt, DS: AUTHOR [+2]

Abstract

The cooling of an enclosure containing an assembly of various types of electrical and electronic equipment is described. Three fans are used to provide defined independent air paths through the enclosure including ducts to prevent recirculation of hot air.

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Cooling Electrical Equipment

The cooling of an enclosure containing an assembly of various types of electrical and electronic equipment is described. Three fans are used to provide defined independent air paths through the enclosure including ducts to prevent recirculation of hot air.

In the figure an enclosed drawer is shown whose base is an aluminum casting including two inlet horizontal air ducts at the front for forced air cooling from front to rear. Cooling air 1 enters duct 1 and cools heat sink fins of a power supply which project into the duct. This air flow then continues rearwards, and finally passes vertically through an enclosed electronic gate to be exhausted through the rear cover by fan 1.

Cooling air 2 enters duct 2, which is parallel to duct 1, and flows rearward to fan 2, which forces it vertically through an enclosed logic gate to exhaust with cooling air 1.

Fan 3 at the rear draws cooling air 3 through a rear grille to cool an enclosed disc file and the power supply. The ducts and additional baffles are designed to make the three air flows independent of each other. A detector at the rear senses the presence and temperature of air flow 3 and controls turn-off of the power supply.

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