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 57, 418 88, 418 94, 184 618, F04C 1804, F04C 2902
Patent
active
047026839
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 at the opposite end of the shaft, said shaft extending between the first frame and the second frame for driving the orbiting scroll. A first bearing is disposed between the main shaft and the first frame for supporting the main shaft at a position at 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 the opposite end of the shaft. The main shaft having an eccentric hole that contains a rotatable eccentric bushing. The bushing includes a passage for continuous flow of lubricant during shaft rotation and a structure that restricts the rotation of the bushing and prevents it from moving in an axial direction.
REFERENCES:
patent: 4609334 (1986-09-01), Muir et al.
Inaba Tsutomu
Kimura Tadashi
Kobayashi Norihide
Nakamura Toshiyuki
Oide Masahiko
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
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