초록 ▼

A pancake, d.c., brushless electric motor 10 and pump 32 in which the rotating parts of the pump 32 are integral with the rotor 18 of the motor 10. The motor and pump housing is hermetically sealed from the flow of the pumped fluid. A small portion of fluid is leaked through a seal 38 and acts to co

A pancake, d.c., brushless electric motor 10 and pump 32 in which the rotating parts of the pump 32 are integral with the rotor 18 of the motor 10. The motor and pump housing is hermetically sealed from the flow of the pumped fluid. A small portion of fluid is leaked through a seal 38 and acts to cool the motor 10 and to lubricate a sleeve bearing 24 which supports the rotor 18 on the motor\s stationary shaft 26. The rotor 18 has permanent magnets 22 divided into two sets which lie on opposite sides of the poles of the stator coils 14 and, therefore, the magnetic thrust between stator and rotor is balanced out.

대표청구항 ▼

A unitary electric magnetic-thrust balanced motor and fluid pump system for use in a reaction engine comprising: a hermetically-sealed motor casing having an exterior and interior; a stationary shaft supported wholly within and bonded to the casing interior; an internal sleeve bearing supported rota

A unitary electric magnetic-thrust balanced motor and fluid pump system for use in a reaction engine comprising: a hermetically-sealed motor casing having an exterior and interior; a stationary shaft supported wholly within and bonded to the casing interior; an internal sleeve bearing supported rotatably by the stationary shaft; an internal rotor having two opposing faces and including a peripheral annular recess formed in the center of the rotor; opposing rotor faces positioned on opposite sides of the recess; means for coupling the sleeve bearing rotatably with the rotor; an internal annular stator, having at least two stator coils and poles, housed inside the rotor peripheral annular recess; an internal rotating shaft having a proximal end and a distal end integrally coupled to the rotor at the proximal end thereof; a central bore within the stationary shaft passing from the proximal end to the distal end thereof; radial holes formed in the shaft at the proximal end and at the distal end in communication with the bore; permanent magnets set into the rotor faces in opposing relationship to the stator coils; labyrinthine seals formed on the rotating shaft near the distal end thereof; an impeller integrally associated with the distal portion of the rotor; means for introducing a fluid into the impeller; a fluid collector volute recess formed within the casing in functional association with the impeller; and means for introducing and channeling a motor coolant and lubricant fluid into the motor and fluid pump system.