Device for damping vibrations, fluctuations of pressure and fluctuation of deliveryvolume or suction volume of rotary piston machines

Claim 1

ROTARY VANE DEVICE COMPRISING IN COMBINATION A CASING HAVING AN INNER CYLINDRICAL WALL, A CAM RING DISPOSED IN SAID WALL AND HAVING A RADIALLY INNER SLIDING SURFACE, A ROTOR DISPOSED IN SAID RING, SAID ROTOR BEING ECCENTRICALLY ROTATABLY MOUNTED WITH RELATION TO THE INNER SURFACE OF SAID RING, ROTOR SIDE WALLS CONNECTED TO THE AXIAL ENDS OF SAID ROTOR FOR ROTATION THEREWITH AND HAVING MEDIAL WALL SURFACES ADJACENT THE ROTOR ENDS, WHICH EXTEND RADIALLY OUTWARDLY PAST THE RING INNER SURFACE, SLOTS FORMED IN SAID ROTOR, VANES DISPOSED IN SAID SLOTS FOR RECIPROCATION THEREWITH, TO DEFINE BETWEEN THE VANES, THE RING INNER SURFACE, THE OUTER RADIAL SURFACE OF SAID ROTOR AND THE MEDIAL SURFACES OF SAID ROTOR SIDE WALLS, INTERVANE SPACES, CONTROL MEANS HAVING AN INLET CONDUIT FOR PASSING FLUID TO SAID INTERVANE SPACES AND AN OUTLET CONDUIT FOR PASSING FLUID FROM SAID INTERVANE SPACES, AND DAMPING MEANS PROVIDED IN AT LEAST ONE ROTOR SIDE WALL IN IMMEDIATE AND DIRECT FLOW COMMUNICATION WITH SAID INTERVANE SPACES, SAID DAMPING MEANS BEING PRESSURE RESPONSIVE TO THE FLUID PRESSURE FLUCTUATION IN SAID INTERVANE SPACES CAUSED BY THE FLUID VOLUME FLUCTUATION DURING OPERATION OF THE DEVICE FOR DAMPING THE FLUID PRESSURE BY ADJUSTING THE VOLUME DURING PEAK FLUCTUATIONS.