| 摘要 |
<p>Rotary pump (50) connectable to a thermal engine, comprising: a housing (40) comprising a pumping chamber (15) having an internal wall (42); a rotor (18) adapted to rotate substantially tangentially to said internal wall (42) in correspondence of an area of tangency (17); a vane (22) mounted radially slidable within a slot formed in the rotor (18), wherein during the rotation of the rotor (18) said pumping chamber (15) is divided by the vane (22) and the rotor (18) into a suction chamber (33) into which a fluid to be compressed is sucked and a compression chamber (38) in which the fluid is compressed; a safety valve (20) formed in the internal wall (42) near the area of tangency (17) between the rotor (18) and the internal wall (42) and adapted to discharge a residual fluid outside the pumping chamber (15), said rotary pump (50) further comprising: a discharge outlet (11, 12) of the safety valve (20) formed in the pumping chamber (15) in a zone near the area of tangency (17) between the rotor (18) and the internal wall (42); and an interspace (35) formed within the housing (40) and connected to an exhaust duct (16) adapted to discharge the fluid outside the pumping chamber (15), said discharge outlet (11, 12) being formed with a radial opening relative to the axis of the pumping chamber (15) and being adapted to put the pumping chamber (15) in communication with the interspace (35).</p> |
