| 摘要 |
<p>A fluid pump comprises a cylindrical shaft (15) mounted in a housing (20) having a fluid passage (27) radially outboard of the shaft and extending circumferentially between at least one fluid inlet port (25) and at least one fluid discharge port (30). The ports are separated by an interruption (29) of the fluid passage located upstream of the inlet and downstream of the discharge. At least one rotatable regenerative rotor disc (10) is mounted on the shaft, the disc having a plurality of radially orientated impeller vanes (12) situated about the periphery thereof within the fluid passage (27) and also having a plurality of permanent magnets (110) embedded therein in a circular locus about the shaft, the magnets being sealed against pumped fluid. At least one set of motor windings (120) is encased in at least one wall of the housing axially adjacent the permanent magnets in the regenerative rotor disc and also sealed against pumped fluid. Means (250) is provided for controlling a flow of electricity through the motor windings to drive the rotor disc. The shaft may be supported in the housing in lubricated bearings or in magnetic bearings, or alternatively, the rotor disc may be rotatably supported on the shaft on lubricated bearings or on magnetic bearings. <IMAGE></p> |
