Scroll compressor with unitary crankshaft, upper bearing and cou

Details Scroll compressor with unitary crankshaft, upper bearing and cou Scroll compressor with unitary crankshaft, upper bearing and cou

1989-12-04

1991-04-16

Vrablik, John J.

Pumps

Motor driven

Electric or magnetic motor

418 551, 418151, F04B 3504, F04C 1804, F04C 2900

Patent

active

050078100

ABSTRACT:
A scroll-type compressor or other rotating machine employs a crankshaft having an integral counterweight to compensate for the off-axis orbiting motion of the device's orbiting scroll. The crankshaft is unitarily formed with a generally cylindrical crank portion at an upper end of the shaft, and with the counterweight formed immediately adjacent the crank. The counterweight is preferably in the form of a segment of a cylinder of smaller radius than that is disposed within the radius of the cylindrical passage of the stator. This permits the rotor and shaft assembly, with counterweight, to be assembled from below after installation of the stator.

REFERENCES:
patent: 3874827 (1975-04-01), Young
patent: 4564339 (1986-01-01), Nakamura et al.
patent: 4696628 (1987-09-01), Kimura et al.

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