Compressor having a lubrication shield

Details Compressor having a lubrication shield Compressor having a lubrication shield

2006-09-14

2008-08-19

Davis, Mary A (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S088000

Reexamination Certificate

active

07413423

ABSTRACT:
A cup-shaped shield surrounds a counter weight on the lower end of a rotor of the refrigeration compressor. The shield advantageously restricts lubricant flow to the rotating lower end of the rotor whereby power consumption of the motor is reduced. The shield may be axially and/or rotationally limited by engagement with a lower bearing assembly. The shield may be used on a scroll compressor. The shield may also be used on a rotor without having a counter weight on the lower end thereof.

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patent: 6280155 (2001-08-01), Dreiman
patent: 6585496 (2003-07-01), Sun

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