Two speed compressor with vibration dampening means

Details Two speed compressor with vibration dampening means Two speed compressor with vibration dampening means

F - Mech Eng,Light,Heat,Weapons

04

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230/50, 308/7

F04B 35/04 (2006.01) F04B 39/00 (2006.01)

Patent

CA 1064444

ABSTRACT OF THE DISCLOSURE This invention pertains to a multi-speed refrigerant com- pressor, for example, a two-speed compressor operable at a rela- tively high speed and at a relatively low speed. Such compressor includes an electric drive motor having a fixed stator and a rotor electrically coupled to the stator and rotatable relative to the stator, a drive shaft or crank shaft driven by the rotor, and vibration dampening means engaging an end of the drive shaft or crank shaft preventing undesirable vibration thereof that could cause rubbing between the stator and the rotor of the electric drive motor during low speed operation, during high speed operation, switching from high to low speed operation, switching from low to high speed operation, start up at low speed, and start up at high speed operation.

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