Rotor counterweight insert apparatus

Details Rotor counterweight insert apparatus Rotor counterweight insert apparatus

1994-07-25

1995-12-19

Vrablik, John J.

Pumps

Motor driven

Electric or magnetic motor

418 556, 418 94, 418151, 74573R, 310 51, F04B 3504, F04C 1804, F04C 2902, H02K 704

Patent

active

054763690

ABSTRACT:
A hermetic compressor assembly is disclosed including a motor compressor disposed within a hermetically sealed housing, wherein the housing has an oil sump in the bottom thereof from which oil is drawn to lubricate the compressor mechanism. An electric drive motor includes a vertical rotor having a lower axial end ring with rotor counterweight die cast therein, whereby turbulence and resulting agitation of the oil in the oil sump is prevented during rotation of the rotor. By die casting the counterweight within the end ring additional attachment parts and manufacturing steps are eliminated.

REFERENCES:
patent: 4762478 (1988-08-01), Sakurai
patent: 5007810 (1991-04-01), Fraser, Jr.
patent: 5013226 (1991-05-01), Nishida
patent: 5336060 (1994-08-01), Tomell et al.

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