Browse Prior Art Database

Fan Motor Improvement

IP.com Disclosure Number: IPCOM000089537D
Original Publication Date: 1977-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Brown, CG: AUTHOR

Abstract

In enclosed machines where cooling is mandatory, it is desirable to provide the highest possible cubic-feet-per-minute output of air from the exhaust of the associated motor fan without extra power input to increase cooling.

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Fan Motor Improvement

In enclosed machines where cooling is mandatory, it is desirable to provide the highest possible cubic-feet-per-minute output of air from the exhaust of the associated motor fan without extra power input to increase cooling.

The usual practice is to provide a short length of duct, such as illustrated in the schematic drawing of Fig. 1. However, as illustrated in Fig. 2, if the exhaust duct is widened and an entry aperture 11 is provided rearwardly of the duct, additional air will be drawn into the exhaust duct, as by the siphon effect. The entrained air removed is machine hot air which then is expelled out of the machine along with the air which is circulated through the blower and fan. This helps to increase the air circulation throughout the machine and permits cooler air from outside the machine to be drawn into the machine.

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