Patent ID: 6959638

Claim:
A rotary fluid machine comprising: a casing ( 11 ); a rotor ( 27 ) rotatably supported in the casing ( 11 ); a first operating part ( 49 ) and a second operating part ( 57 ) provided in the rotor ( 27 ); and intake/discharge control means ( 61 ) for controlling the intake and discharge of a working medium to and from the first operating part ( 49 ) and the second operating part ( 57 ), the intake/discharge control means ( 61 ) being provided between the casing ( 11 ) and the rotor ( 27 ); wherein the intake/discharge control means ( 61 ) is formed from a first rotary valve ( 63 , 64 ) that has a flat sliding surface ( 68 ) perpendicular to a rotational axis (L) of the rotor ( 27 ) and controls the intake and discharge of the working medium to and from the first operating part ( 49 ), and a second rotary valve ( 70 , 27 ) that has a cylindrical sliding surface ( 71 ) centered on the rotational axis (L) of the rotor ( 27 ) and controls the intake and discharge of the working medium to and from the second operating part ( 57 ).