Co-rotational scroll apparatus with improved scroll member biasi

Details Co-rotational scroll apparatus with improved scroll member biasi Co-rotational scroll apparatus with improved scroll member biasi

1991-02-12

1992-07-14

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 57, F01C 104, F01C 1908

Patent

active

051297981

ABSTRACT:
In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating concurrently about parallel, non-concentric axes to produce a relative orbital motion, a scroll member including an annular biasing chamber formed in one scroll member end plate opposite the scroll wrap and a passage from one of the chambers formed by the scroll wraps for providing fluid to the chamber. The fluid exerts a force upon a pressure plate secured to the opposing scroll end plate and thereby acts to bias the scroll wraps into contact with the opposing scroll end plate. Seals are provided in the biasing chamber of the scroll end plate to ensure contact with the pressure plate of the opposing scroll member.

REFERENCES:
patent: 3600114 (1971-08-01), Dvorak et al.
patent: 4600369 (1986-07-01), Blain
patent: 4645437 (1987-02-01), Sakashita et al.
patent: 4969630 (1987-09-01), Sakata et al.
patent: 4993928 (1991-02-01), Fraser, Jr.

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