Rotary expansible chamber devices – Moving cylinder – Rotating
Patent
1998-08-28
2000-10-24
Denion, Thomas
Rotary expansible chamber devices
Moving cylinder
Rotating
418177, 418102, 417295, 417283, 192 12A, F04C 1800
Patent
active
061357421
ABSTRACT:
The present invention relates to an eccentric-type vane pump and, in particular, to an eccentric-type vane pump being capable of generating minimum heat and noise due to frictional force produced from rotation of the vane pump. The vane pump comprises a rotor connected to a rotor shaft having vanes slidably received in vane grooves and recessed within a space in the periphery of the rotor for moving radially by rotation of the rotor. A cylinder ring is positioned eccentrically around the rotor and is rotated by the frictional force produced from abutting the front end of the vanes. A pump chamber is formed between the rotor and the cylinder ring. A cylinder body is provided having a bearing between the outer surface of the cylinder ring and the cylinder body. A front body is connected to a first end of the cylinder body. One end of a rotor shaft is supported on a recess formed on one side of the front body. A rear body is connected to a second end of the cylinder body, the rotor shaft being extended through the rear body to rotate. The rear body has a vane oil distribution channel which supplies oil pressure exerting on the vanes and a cylinder oil distribution channel which supplies oil pressure exerting on the cylinder ring from a bearing therein.
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Denion Thomas
Trieu Thai-Ba
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