Oil-free scroll fluid machine with projecting orbiting bearing b

Details Oil-free scroll fluid machine with projecting orbiting bearing b Oil-free scroll fluid machine with projecting orbiting bearing b

1990-04-11

1992-03-24

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 553, 418 556, F04C 1804

Patent

active

050982656

ABSTRACT:
An oil-free scroll fluid machine having a stationary scroll member, an orbiting scroll member opposing the stationary scroll member, an orbiting bearing boss provided on the orbiting scroll member and receiving an orbiting bearing, and a drive shaft drivingly engaging with the orbiting scroll member through the orbiting bearing and causing an orbiting motion of the orbiting scroll member relative to the stationary scroll member. The orbiting bearing boss projects from the orbiting scroll member into a compression chamber formed between both scroll members beyond a plane which is at 1/2 the height of the wrap on the stationary scroll member. An ample discharge space is formed between the end of the orbiting bearing boss and the end plate of the stationary scroll member.

REFERENCES:
patent: 3560119 (1971-02-01), Busch et al.
patent: 4464100 (1984-08-01), Machida et al.
patent: 4466784 (1984-08-01), Hiraga

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