ROTARY VANE MACHINE

摘要

The invention provides a rotary-vane machine having a stationary shell including a casing member (2), a camming ring (4) having an internal, non-circular camming surface (6), and a flange member (8); a rotor (10) including at least two first vanes (12) fixedly attached to, or integral with, the rotor (10), a first cover plate (14) fixedly attachable to the rotor (10); a second cover plate (16) fixedly attachable to the rotor and integral with a first shaft (22) supported on its free end by bearing (26) mounted in the casing (2), and being provided with at least four ports (a) for access or egress of a working medium; a second shaft (23) supported by a first bearing (28) accommodated in the first cover plate (14) and by a second bearing (30) accommodated in the second cover plate (16); at least two second vanes (38) fixedly attached to the second shaft (23) and oscillatably accommodated within the rotor (10), and defining, together with the rotor (10), the first vanes (12) and the first and second cover plates (14, 16), a plurality of chambers (Ch1-Ch4); a cross piece (40) integral with the second shaft (23) and having at least one lateral projection (42) mounting at least one block (48) pivotable about a pivot (46); at least one third shaft (32) eccentrically projecting from the second cover plate (16), the end portion of which shaft is connected to a coupling member for connection to a source of rotational power; at least one cam follower (54) pivotably mounted between the second cover plate (16) and the coupling member on the at least one third shaft (32) and comprising two rollers (60) riding along the internal surface of the cam follower (54), further comprising two laterally extending arms (56), the ends of which are adapted to act on the cross piece (40), and an inlet and outlet manifold (76) mounted in the casing (2) and rotationally stationary relative thereto and in contact with the second cover plate (16), the manifold (76) having at least one pair of inlet and outlet ducts (88) and ports (c) disposed so as to provide communication between the ports in the second cover plate and an inlet and outlet port respectively in the casing.