Patent ID: 6039552
Filing Date: 2000-03-21
Classification: F04C

Abstract:
A rotary compressor comprising a casing having an inflow port and an outflow port for a fluid which open on its inner surface, a cylindrical outer rotor rotatably housed in the casing, and a cylindrical inner rotor rotatably supported at an eccentric position within the outer rotor, said rotors being rotated in a predetermined direction to introduce a fluid from the inflow port into a space between the rotors, the fluid being discharged through the outflow port, wherein:said outer rotor has an inner peripheral surface provided with at least one or more protruding portions for partitioning which are radially inwardly raised and are circumferentially spaced apart from one another;said inner rotor has an outer peripheral surface provided with at least one or more recessed portions for partitioning which are radially inwardly recessed and are circumferentially spaced apart from one another; andsaid outer rotor and said inner rotor are connected to each other in such a manner that said protruding portions for partitioning of said outer rotor move circularly in a non-contact manner along inner surfaces of said recessed portions for partitioning of said inner rotor.