Scroll type compressor having a convex surface on the sub frame

Details Scroll type compressor having a convex surface on the sub frame Scroll type compressor having a convex surface on the sub frame

1993-12-29

1995-04-18

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 555, 418 57, 418182, 384192, 403121, 464106, F04C 1804, F04C 2900, F16C 2304

Patent

active

054073340

ABSTRACT:
A scroll type compressor having a main frame, a sub frame and a crankshaft rotatably mounted in the main frame and the sub frame via a main frame bushing and a sub frame bushing, further includes a fixed scroll and an orbiting scroll cooperable with the fixed scroll to compress gas, the orbiting scroll being drivingly mounted on the eccentric shaft portion. A barrel shaped band portion faces the crankshaft and presents a convex surface in at least one of a respective force direction of a compressive load generated in a compression chamber formed between the orbiting scroll and the fixed scroll, and a reactive force direction of a centrifugal load generated by a revolution movement of the orbiting scroll and rotary movements of upper and lower balance weights. The barrel shaped band portion is formed on the sub frame bushing.

REFERENCES:
patent: 4808094 (1989-02-01), Sugimoto et al.
patent: 5137437 (1992-08-01), Machida et al.
patent: 5186546 (1993-02-01), Abe

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