Scroll apparatus with pressurizable fluid chamber for axial scro

Details Scroll apparatus with pressurizable fluid chamber for axial scro Scroll apparatus with pressurizable fluid chamber for axial scro

1975-03-24

1976-11-30

Vrablik, John J.

Rotary expansible chamber devices

Multistage

418 55, 418 57, 418 83, 418 99, F01C 102, F01C 1100, F04C 1702, F01C 1900

Patent

active

039946339

ABSTRACT:
A positive fluid displacement apparatus employing scroll members having interfitting spiroidal wraps angularly and radially offset such that as one of the scroll members is orbited, moving fluid pockets of variable volume and different fluid pressures are formed. Axial load carrying of the scroll members is achieved pneumatically through the introduction of a fluid into a pressurizable fluid chamber within the housing and in axial force applying relationship with the orbiting scroll member. The pressurizable fluid chamber may constitute essentially all or only a part of the internal volume of the housing and it is isolated from the fluid pockets. This type of axial load carrying materially reduces the loads which must be carried through the crankshaft and decreases the size and complexity of the bearings. The apparatus is particularly well suited to compressors operating at high exhaust pressures.

REFERENCES:
patent: 1475683 (1923-11-01), Carrey
patent: 1766005 (1930-06-01), Sullivan
patent: 1895816 (1933-01-01), Pfeiffer
patent: 2098652 (1937-11-01), Buckbee
patent: 2841089 (1958-07-01), Jones
patent: 3600114 (1971-08-01), Dvorak et al.
patent: 3817664 (1974-06-01), Bennett et al.
patent: 3874827 (1975-04-01), Young
patent: 3924977 (1975-12-01), McCullough

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