ROTATING ELECTRIC MACHINE

摘要

A rotating electric machine includes a stator, a rotor, and a coolant supply passage. Coils are wound on the teeth of the stator. The rotor is disposed coaxially with the stator, and has an outer circumferential surface that faces respective distal end faces of the teeth with a constant gap formed therebetween. The coolant supply passage is disposed inside the rotor, and is configured to eject a coolant from a coolant outlet of the outer circumferential surface of the rotor toward the distal end face of a corresponding one of the teeth so as to supply the coolant to the gap. A discharge groove is formed in the distal end face of the corresponding tooth. The discharge groove is inclined radially outwardly of the stator, from a coolant supply position as an axial position of the stator facing the coolant outlet, toward one edge of the distal end face of the corresponding tooth.

主权项

1. A rotating electric machine comprising:
a plurality of coils; a stator having a plurality of teeth, the plurality of coils wound on the teeth; a rotor disposed coaxially with the stator, the rotor having an outer circumferential surface that faces respective distal end faces of the teeth with a constant gap between the rotor and the distal end faces; and a coolant supply passage disposed inside the rotor, the coolant supply passage configured to eject a coolant from a coolant outlet of the outer circumferential surface of the rotor toward the distal end face of a corresponding one of the teeth so as to supply the coolant to the gap, the corresponding one of the teeth having a discharge groove on the distal end face of the corresponding one of the teeth, the discharge groove having a predetermined width, and the discharge groove inclined radially outwardly of the stator, from a coolant supply position that is an axial position of the stator facing the coolant outlet, toward one edge of the distal end face of the corresponding tooth.