Rotary electrical machine
AssigneeNissan Motor Co., Ltd.
InventorsTakenari Okuyama, Tomoki Takeuchi
Life of this patent
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Abstract
A rotary electrical machine in which a rotor and a stator are housed in a housing and a coil of the stator is cooled using gas. The stator includes an annular coil end protruding from an end portion of the stator in an axial direction thereof. The housing includes an introduction port configured to allow gas for cooling the rotary electrical machine to be introduced from an outside of the housing toward the coil end. The coil end includes a flow path configured to allow the gas introduced from the introduction port to pass from an outer peripheral side to an inner peripheral side. A cooling air control member configured to guide the gas introduced from the introduction port to the flow path of the coil end is provided between the coil end and the housing in the axial direction.
Claims6
A rotary electrical machine comprising:
- a rotor;
- and
- a stator;
- and
- a housing that houses the rotor and the stator;
- wherein:
- a coil of the stator is configured to be cooled using gas,
- the coil is formed of a flat wire,
- the stator comprises an annular coil end protruding from an end portion of the stator in an axial direction thereof,
- the housing comprises an introduction port configured to allow gas for cooling the rotary electrical machine to be introduced from an outside of the housing toward the coil end,
- in the coil end, a flow path is formed by a gap between the coil end and the coil of the stator, and the gas introduced from the introduction port passes through the flow path from an outer peripheral side to an inner peripheral side,
- a cooling air control member configured to guide the gas introduced from the introduction port to the flow path of the coil end is provided between the coil end and the housing in the axial direction, and
- the flow path comprises:
- a first flow path that is formed of voids formed between a plurality of the flat wires extending in the axial direction and that radially penetrates the coil end from the outer peripheral side to the inner peripheral side, at a base portion of the coil end in the axial direction, and
- a second flow path that is formed of open portions formed between the plurality of flat wires extending in the axial direction and that radially penetrates the coil end from the outer peripheral side to the inner peripheral side, at an end portion side with respect to the base portion.
Dependencies are inferred from the claim text.