Electric pump
AssigneeAsian Kogyo Kabushiki Kaisha
InventorsKazutaka Nakamichi, Masaru Gamo, Masahiro Kobayashi, Atsushi Taguchi
Life of this patent
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Abstract
An electric pump may comprise a pump case (110, 150) having a pump chamber. An impeller 143 may be rotatably disposed within the pump chamber. The impeller 143 may include a magnetized cylindrical portion 145. A stator 133 may be disposed opposite to the cylindrical portion 145 of the impeller 143. The stator 133 may drive the impeller 143 by applying magnetic forces to the cylindrical portion 145 of the impeller 143. A shaft 146 may be formed integrally with the impeller 143. One end of the shaft 143 may be rotatably supported with respect to the pump case.
Claims11
An electric pump, comprising:
- a pump case having a pump chamber;
- an impeller rotatably disposed within the pump chamber, the impeller having a magnetized cylindrical portion;
- a stator disposed opposite to the cylindrical portion of the impeller, the stator driving the impeller by applying magnetic forces to the cylindrical portion of the impeller;
- and
- a shaft fixed to the impeller, wherein the shaft is rotatably supported with respect to the pump case.
An electric pump, comprising:
- a pump case having a pump chamber;
- a shaft disposed within the pump chamber, wherein a lower end of the shaft is fixed to the pump case;
- an impeller rotatably disposed within the pump chamber, the impeller comprising a magnetized cylindrical portion, and a bearing into which the shaft is inserted, wherein a plurality of grooves are formed in a lower end surface of the bearing;
- and
- a stator disposed opposite to the cylindrical portion of the impeller, the stator driving the impeller by applying magnetic forces to the cylindrical portion of the impeller.
An electric pump, comprising:
- a pump case having a pump chamber;
- a shaft disposed within the pump chamber, wherein a lower end of the shaft is fixed to the pump case;
- an impeller rotatably disposed within the pump chamber, the impeller comprising a magnetized cylindrical portion, and a bearing into which the shaft is inserted;
- a stator disposed opposite to the cylindrical portion of the impeller, the stator driving the impeller by applying magnetic forces to the cylindrical portion of the impeller;
- and
- a washer disposed between the pump case and a lower end surface of the bearing.
Dependencies are inferred from the claim text.