Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1986-10-06
1987-10-27
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 88, 418 94, 184 618, F04C 1804, F04C 2902
Patent
active
047026820
ABSTRACT:
A scroll-type compressor including stationary and orbiting scrolls housed in a shell. A first frame, also housed in the shell, receives a portion of the orbiting scroll. The stationary scroll is fixed to the first frame, and a second frame is further mounted in the shell. A balancer chamber is formed between the first and second frames. A main shaft having a balancer is housed in the balancer chamber rotatably. The main shaft includes an enlarged diameter portion on one end of the shaft which is attached to the orbiting scroll and a small diameter portion on the end of the shaft which is attached to the orbiting scroll and extending between the first frame and the second frame for driving the orbiting scroll. A first bearing is disposed between the main shaft in the first frame for supporting the main shaft at a position between the orbiting scroll end of the shaft. A second bearing is disposed between the main shaft and the second frame for supporting the main shaft at a position proximate opposite the end of the shaft.
The main shaft has an eccentric hole at the upper enlarged diameter portion thereof that can receive the shaft of the orbiting scroll. The main shaft has an oil passage connecting the lower end of the shaft, that is dipped into an oil pan, to the upper end of the shaft at the eccentric hole. The passage is structured to suck oil from the oil pan to the eccentric hole during rotation of the shaft. The eccentric hole has oil holes and passages that permit lubrication to flow to the appropriate bearings.
REFERENCES:
patent: 4065279 (1977-12-01), McCullough
patent: 4502852 (1985-03-01), Hazaki
patent: 4585403 (1986-04-01), Inaba et al.
patent: 4592703 (1986-06-01), Inaba et al.
Inaba Tsutomu
Kimura Tadashi
Kobayashi Norihide
Nakamura Toshiyuki
Oide Masahiko
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
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