| 主权项 |
1. A rotor for a rotating electric machine comprising:
a cylindrical rotor core positioned on a radial inner side of a stator that includes a stator core and a coil end portion protruding toward an axial direction from the stator core; and a rotor shaft fixed so as to rotate together with the rotor core, wherein
the rotor core includes a rotor core body, an end plate that is mounted to an axial end face of the rotor core body and a permanent magnet that is provided in the rotor core body,an inner circumferential face of the rotor core is in heat-transferable contact with the rotor shaft,the rotor shaft is shaped as a cylinder that includes therein a cooling medium flow space through which a liquid cooling medium flows, and an inner circumferential face thereof that faces the cooling medium flow space is a cooling inner circumferential face,a cooling medium supply member that supplies the cooling medium to the cooling medium flow space is provided disposed in the cooling medium flow space,the cooling medium supply member includes therein a cooling medium supply path that extends in a rotor axial direction, and includes a cooling medium supply hole that extends from the cooling medium supply path toward a rotor radial outer side,the cooling medium supply hole includes a supply opening portion that opens toward the cooling inner circumferential face within a region that overlaps with the rotor core in the rotor axial direction,the rotor shaft includes a cooling medium discharge hole that extends from the cooling medium flow space toward the rotor radial outer side, andthe cooling medium discharge hole includes a discharge opening portion that opens toward the radial outer side, is provided farther outward in the rotor axial direction than the rotor except for the rotor shaft, opens toward the coil end portion, and is a spray hole that sprays the cooling medium toward the coil end portion. |
