Counterweight drag eliminator

Details Counterweight drag eliminator Counterweight drag eliminator

1995-12-11

1997-01-28

Thorpe, Timothy

Pumps

Motor driven

Electric or magnetic motor

418151, F04B 1703

Patent

active

055972934

ABSTRACT:
The end ring(s) and counterweight(s) attached to the rotor of a hermetic compressor are located within a cover which isolates them from the interior of the compressor. The cover may be fixed or it may rotate as a unit with the rotor, end ring and counterweight. In each embodiment the asymmetric counterweight is prevented from acting as a fan with respect to the interior of the shell and is thereby prevented from producing a pressure gradient tending to act on the sump and cause a higher oil circulation rate to the refrigeration system.

REFERENCES:
patent: 4934910 (1990-06-01), Utter
patent: 5030073 (1991-07-01), Serizawa et al.

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