Scroll-type fluid displacement apparatus with angular offset var

Details Scroll-type fluid displacement apparatus with angular offset var Scroll-type fluid displacement apparatus with angular offset var

1981-10-09

1985-11-05

Vrablik, John J.

Rotary expansible chamber devices

With changeable working chamber magnitude

418 55, 418 57, F01C 104, F01C 2116

Patent

active

045510784

ABSTRACT:
A scroll type fluid displacement apparatus, in particular, a compressor unit is disclosed. The unit includes a housing, a pair of scroll members which are comprised of an end plate and a spiral wrap extending from one surface of the end plate. Both wraps interfit to make a plurality of line contacts between their spiral curved surfaces. A driving mechanism and a rotation preventing mechanism are connected to one of the scroll members to effect relative orbital motion while rotation of the scroll member is prevented. A turning mechanism is associated with one of the scroll members to selectively turn the scroll member and vary the angular offset between the wraps, whereby the compressive effect of the scroll members can be controlled independently of the operation of the driving mechanism.

REFERENCES:
patent: 4082484 (1978-04-01), McCullough
patent: 4178143 (1979-12-01), Thelen et al.

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