Scroll-type fluid transferring machine with deformable thrust be

Details Scroll-type fluid transferring machine with deformable thrust be Scroll-type fluid transferring machine with deformable thrust be

1987-08-25

1989-01-03

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 57, 384304, F01C 104, F01C 2102, F16C 1704, F16C 2702

Patent

active

047953241

ABSTRACT:
A scroll-type fluid transferring machine of an improved construction, in which the bottom surface of the base plate of the orbiting scroll member and the bearing surface of the thrust bearing are well adapted even under a thrusting force during compression of the operating fluid, such scroll-type fluid transferring machine having its feature such that the surface of the thrust bearing to support the base plate of the orbiting scroll member, or the surface of the base plate of the scroll member supported by the thrust bearing is slanted in the radial direction so as to form the surface thereof in a center-concaved shape, wherein the inner peripheral side is concaved with respect to the outer peripheral side at a very small distance in the axial direction, or that an axial projection which is concentric with the thrust bearing and has a narrow width in the radial direction is provided between the opposed surfaces of the thrust bearing and the bearing frame in the vicinity of the center part in the radial direction between the inner peripheral side and the outer peripheral side of the thrust bearing, and further space gaps are provided between the mutually opposed surfaces at the inner peripheral side and the outer peripheral side of the projection.

REFERENCES:
patent: 801182 (1905-10-01), Creux
patent: 3994636 (1976-11-01), McCullough et al.
patent: 4065279 (1977-12-01), McCullough
patent: 4199308 (1980-04-01), McCullough
patent: 4674963 (1987-06-01), Morishita et al.
patent: 4702681 (1987-10-01), Inaba et al.

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