Shaft stiffening assembly for direct motor compressor drive

Details Shaft stiffening assembly for direct motor compressor drive Shaft stiffening assembly for direct motor compressor drive

H - Electricity

02

K

H02K 5/00 (2006.01) H02K 5/04 (2006.01) H02K 5/173 (2006.01) H02K 5/22 (2006.01) H02K 7/08 (2006.01) H02K 7/14 (2006.01) H02K 11/00 (2006.01)

Patent

CA 2602745

An electric motor assembly capable of withstanding heavy side loading includes a motor housing having a shell with first and second end shields including bearing supports having bearings therein. The first end shield further includes a flange for connecting a compressor to the motor. A rotor is rotatably mounted in the housing and supported by the bearings. A stiffening collar, positioned between a rotor core and the first end shield, surrounds a portion of a rotor shaft and provides support for the shaft against deflection due to heavy side loading. A centrifugal mechanism and a spacer are positioned on the rotor assembly outboard of the motor housing. The motor assembly also includes a cover attached to the second end shield. The cover holds a start capacitor, a run capacitor and a centrifugal switch and further includes snaps for mounting the centrifugal switch to the cover. An overload and an overload bracket extend, at least partially, through an opening in the second end shield. The overload bracket includes snaps that engage the second end shield and maintain the bracket and overload in position. A load washer having a plurality of snaps engages the second end shield and maintains the load washer in position on the second end shield.

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