COUNTERWEIGHT DRAG ELIMINATOR.

摘要

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 embodiments 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.