Patent ID: 6280157
Filing Date: 2001-08-28
Classification: F04D

Abstract:
A fluid pump comprising:a housing having at least one toroidal fluid passage, between at least two axially opposed radially extending walls, extending circumferentially between at least one fluid inlet port and at least one fluid discharge port, said ports being separated by an interruption of said fluid passage located upstream of said at least one inlet and downstream of said at least one discharge;at least one regenerative rotor disk, rotatably supported between said at least two radially extending walls within said housing, and having a plurality of radially oriented impeller vanes situated about the periphery thereof within said toroidal fluid passage, the disk also having a plurality of permanent magnets embedded therein in a circular locus about an axis of rotation of said disk, said magnets being sealed against pumped fluid;means for rotatably supporting said rotor disk at least one set of motor windings encased in at least one of said radially extending walls of said housing axially adjacent the permanent magnets in said at least one regenerative rotor disk, said motor windings being also sealed against pumped fluid; andmeans for controlling a flow of electric current through said motor windings to act upon said permanent magnets, thereby to rotatably drive said rotor disk.