Scroll type compressor

Details Scroll type compressor Scroll type compressor

1995-07-25

1997-01-28

Freay, Charles G.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418151, F01C 104

Patent

active

055972977

ABSTRACT:
A compressor has a fixed scroll and a movable scroll which has a first surface and a second surface. The first surface is opposed to the fixed scroll to define a displaceable fluid pocket. The movable scroll is supported on a rotary shaft via an eccentric pin to move along a predetermined orbit around an axis of the rotary shaft. Gas is introduced into and compressed in the fluid pocket. A boss is formed with the second surface of the movable scroll. A bushing is supported on the eccentric pin and rotatably received by the boss. The rotary shaft has an inner end surface for securely supporting the eccentric pin. A holding member engages the eccentric pin to hold the bushing in a predetermined position on the eccentric pin in corporation with the inner surface of the rotary shaft. A balance weight is secured around the bushing to cancel a dynamic imbalance of the movable scroll due to the orbital movement of the movable scroll.

REFERENCES:
patent: 4406600 (1983-09-01), Terauchi et al.
patent: 4808094 (1989-02-01), Sugimoto et al.
patent: 5040958 (1991-08-01), Arata et al.
patent: 5165879 (1992-11-01), Kondo et al.
patent: 5199862 (1993-04-01), Kondo et al.
patent: 5310324 (1994-05-01), Taniguchi et al.

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