Integrated pump assembly with one moving part
AssigneeSapphire Motors
InventorsTracy MCSHEERY, Carl PAGE
Life of this patent
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Abstract
A pump assembly can pump fluid with a single moving part. The pump includes a casing with an inlet and an outlet. The pump includes an impeller to rotate inside the casing to create low pressure at the inlet and increase pressure to expel fluid from the output. The impeller is physically connected to a rotor within the pump casing. The rotor includes permanent magnets arranged radially around a surface of the rotor opposite the physical connection to the impeller. A variation replaces the magnets with a switched reluctance path. The pump includes a stator assembly within the casing, magnetically coupled to the rotor, the stator assembly having electrically controllable conductors to drive the rotor with axial flux.
Claims20
A pump comprising:
- a casing having an inlet to receive fluid and an outlet to expel fluid and an enclosed space to be filled with the liquid when the pump operates;
- an impeller within the enclosed space to rotate inside the casing to create low pressure at the inlet and increase pressure to expel the fluid from the outlet;
- a rotor physically integrated, shaftlessly, with the impeller within the enclosed space, the rotor including permanent magnets arranged radially around a surface of the rotor opposite a connection to the impeller;
- and
- a stator assembly within the casing, in the enclosed space adjacent the rotor, the stator assembly having a stator core with coils wrapped around the core, the coils including electrically controllable conductors to selectively, magnetically couple to the permanent magnets, to drive the rotor with axial flux.
A pump comprising:
- a casing having an inlet to receive fluid and an outlet to expel fluid and an enclosed space to be filled with the liquid when the pump operates;
- an impeller within the enclosed space to rotate inside the casing to create low pressure at the inlet and increase pressure to expel the fluid from the outlet;
- a rotor physically integrated, shaftlessly, with the impeller within the enclosed space, the rotor including blades to face the inlet, and including a cylindrical base extending away from a surface of the impeller opposite the blades, the surface of the cylindrical base having permanent magnets arranged radially around the base;
- and
- a stator assembly within the casing in the enclosed space, surrounding the cylindrical base of the rotor, the stator assembly having a stator core with coils wrapped around the core, the coils facing the permanent magnets, the coils including electrically controllable conductors to selectively, magnetically couple to the permanent magnets, to drive the rotor with radial flux.
Dependencies are inferred from the claim text.