Rotary electric machine
First Claim
1. A rotary electric machine comprising:
- an externally mounted frame;
a rotor that is rotatably disposed inside said externally mounted frame such that an axial direction of a shaft is horizontal;
a stator comprising;
a stator core that is annular and disposed coaxially so as to surround said rotor and that is held by said externally mounted frame, anda plurality of coils that are mounted to said stator core so as to be arranged in an annular shape;
a cooling oil channel that is annular and configured inside said externally mounted frame so as to face axially toward said plurality of coils that are arranged in the annular shape and such that a surface that faces said plurality of coils is made into an opening said cooling oil channel being axially separated from said stator and opening to an atmosphere;
an oil pump;
a nozzle that sprays cooling oil that is conveyed under pressure from said oil pump into said cooling oil channel from above; and
a plurality of oil flow direction changing projections that are discretely disposed inside said cooling oil channel,wherein each of said plurality of oil flow direction changing projections is circumferentially arranged so as to face a gap between adjacent coils, respectively, among said plurality of coils, and has a cooling oil receiving surface,said cooling oil receiving surface of each of said plurality of oil flow direction changing projections faces upstream with respect to a direction of a flow of said cooling oil so as to change said flow of said cooling oil that flows through said cooling oil channel to an axial flow so as to be supplied to said gap between said adjacent coils, respectively.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotary electric machine includes: an annular cooling oil channel that is configured inside an externally mounted frame so as to face axially toward coils that are arranged in an annular shape and such that a surface that faces the coils is made into an opening; an oil pump; a nozzle that sprays cooling oil that is conveyed under pressure from the oil pump into the cooling oil channel from above; and a plurality of oil flow direction changing projections that are respectively disposed inside the cooling oil channel and are arranged circumferentially so as to face gaps between the coils and such that cooling oil receiving surfaces face upstream in a direction of flow of the cooling oil so as to change the cooling oil that flows through the cooling oil channel to an axial flow so as to be supplied to the gaps between the coils.
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Citations
10 Claims
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1. A rotary electric machine comprising:
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an externally mounted frame; a rotor that is rotatably disposed inside said externally mounted frame such that an axial direction of a shaft is horizontal; a stator comprising; a stator core that is annular and disposed coaxially so as to surround said rotor and that is held by said externally mounted frame, and a plurality of coils that are mounted to said stator core so as to be arranged in an annular shape; a cooling oil channel that is annular and configured inside said externally mounted frame so as to face axially toward said plurality of coils that are arranged in the annular shape and such that a surface that faces said plurality of coils is made into an opening said cooling oil channel being axially separated from said stator and opening to an atmosphere; an oil pump; a nozzle that sprays cooling oil that is conveyed under pressure from said oil pump into said cooling oil channel from above; and a plurality of oil flow direction changing projections that are discretely disposed inside said cooling oil channel, wherein each of said plurality of oil flow direction changing projections is circumferentially arranged so as to face a gap between adjacent coils, respectively, among said plurality of coils, and has a cooling oil receiving surface, said cooling oil receiving surface of each of said plurality of oil flow direction changing projections faces upstream with respect to a direction of a flow of said cooling oil so as to change said flow of said cooling oil that flows through said cooling oil channel to an axial flow so as to be supplied to said gap between said adjacent coils, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification