Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
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
Kobayashi Norihide
Nakamura Toshiyuki
Ogawa Hiroshi
Oide Masahiko
Sakaino Keiji
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
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