Scroll-type fluid displacement machine

Details Scroll-type fluid displacement machine Scroll-type fluid displacement machine

1998-06-11

2000-07-25

Denion, Thomas

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 553, 418 552, 418 554, 418101, F04C 1800

Patent

active

060930055

ABSTRACT:
A scroll-type fluid displacement machine includes first and second scroll bodies that rotate synchronously together, their rotation axes being offset from one another. A cylindrical partition wall is provided to extend axially in the center of the scroll bodies. A space is provided between scroll vanes of the scroll bodies and the cylindrical partition wall. The interior of the cylindrical partition wall is cooled by air ventilation, and a grease-lubricated Oldham coupling is disposed inside the cylindrical partition wall. Hence, the Oldham coupling that is made of a metal is prevented from wear and deformation thereof over a long time. The displacement machine requires neither a counterweight nor a pin-crank device. The machine may be oil-free in the fluid compression part of the scroll bodies.

REFERENCES:
patent: 2475247 (1949-07-01), Mikulasek
patent: 5024589 (1991-06-01), Jetzer et al.
patent: 5842843 (1998-12-01), Haga

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