Scroll type compressor with refrigerant gas passage in balance w

Details Scroll type compressor with refrigerant gas passage in balance w Scroll type compressor with refrigerant gas passage in balance w

1994-10-25

1995-10-10

Bertsch, Richard A.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 94, 418151, F01C 104, F01C 2104

Patent

active

054565847

ABSTRACT:
When a rotary shaft of a scroll type compressor rotates and a movable scroll of the compressor makes an orbital movement around the axis of a rotary shaft by way of an eccentric shaft, refrigerant gas is supplied to compression chambers between a fixed scroll and the movable scroll. A first bearing rotatably supports the rotary shaft. A second bearing is provided between the movable scroll and the eccentric shaft to permit relative movement therebetween. A balance weight attached to the movable scroll dynamically balances the movable scroll during its rotation. A crank chamber accommodates the balance weight. A suction port is so provided in the housing as to communicate with the crank chamber, and permits the refrigerant gas to be supplied into the housing. A passage is formed in the balance weight, the eccentric shaft and the rotary shaft to supply the refrigerant gas into a first gap between the first bearing and the rotary shaft and a second gap between the second bearing and the movable scroll.

REFERENCES:
patent: 5201646 (1993-04-01), Dees et al.
patent: 5308231 (1994-05-01), Bookbinder et al.

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