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US 12,119,734 B2Granted
Motor with cooling medium and fins for heat dissipation
AssigneeNidec Corporation
InventorsTakaaki Bando, Takuya Matsuyama
Life of this patent
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Abstract
A motor includes a rotor rotatable about a central axis and a stator including coils. The stator opposes the rotor with a gap interposed therebetween. A housing defines at least a portion of a closed chamber in which a cooling medium is housed. Heat dissipation portions are able to release heat of the cooling medium in the closed chamber to an outside. A pressure adjustment portion is able to adjust a pressure in the closed chamber. At least a portion of the coils and the rotor is housed in the closed chamber.
Claims13
A motor comprising:
- a rotor that is rotatable about a central axis;
- a stator that includes coils and opposes the rotor with a gap interposed therebetween;
- a housing that defines at least a portion of a closed chamber in which a cooling medium is housed;
- heat dissipation portions that are able to release heat of the cooling medium in the closed chamber to an outside;
- and
- a pressure adjustment portion that is able to adjust a pressure in the closed chamber;
- wherein
- the pressure adjustment portion is defined by a container portion which has a variable volume;
- and
- at least a portion of the coils and the rotor is housed in the closed chamber.
7 more elements
Dependencies are inferred from the claim text.