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Ventilation System and Heat Shield for Electric Motors

IP.com Disclosure Number: IPCOM000078951D
Original Publication Date: 1973-Apr-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Akers, AL: AUTHOR [+2]

Abstract

A cooling shroud for an electric motor is shown. Electric motor 10 is inserted into cooling shroud 12 which contains spacer elements 14. Spacer elements 14 maintain a relatively open annulus around motor housing 10. Annulus sealing ring 16 is positioned within shroud 12, and will be in contact with the interior of shroud 12 and the exterior of motor housing 10 at the zone indicated as 18. An end plate 20 is provided to close the shaft end of shroud 12. Shaft 22 of motor 10 will then extend through opening 24 in end plate 20.

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Ventilation System and Heat Shield for Electric Motors

A cooling shroud for an electric motor is shown. Electric motor 10 is inserted into cooling shroud 12 which contains spacer elements 14. Spacer elements 14 maintain a relatively open annulus around motor housing 10. Annulus sealing ring 16 is positioned within shroud 12, and will be in contact with the interior of shroud 12 and the exterior of motor housing 10 at the zone indicated as 18. An end plate 20 is provided to close the shaft end of shroud 12. Shaft 22 of motor 10 will then extend through opening 24 in end plate 20.

In operation, the air flow will enter the end of motor housing 10, and then be pulled through the ventilation ports 26 into the annular opening within cooling shroud 12 and exterior to the motor housing 10. The air flow will then move substantially coaxially between spacers 14 and reenter the motor housing 10 through ventilation ports 28, because sealing ring 16 prevents further coaxial movement of the air. The air is pulled into motor housing 10 through ventilation ports 28 by fan 20, and then is ejected through exhaust port 3O in motor housing
10. The flow of cooling air from exhaust port 30 is forced into chamber 32 formed by sealing ring 16, end plate 20, and shroud 12. From chamber 32 the air is exhausted through port 34 to the outside atmosphere.

An improved air flow and cooling is accomplished by the above arrangement, together with the protection from personnel contact provided by...