ROTARY ELECTRIC MACHINE

摘要

A rotary electric machine includes a rotor and a rotor shaft. The rotor has a cooling flow passage and the rotor shaft is fixed to an inner peripheral surface of the rotor. The rotor shaft has a hollow part to which the liquid coolant is supplied, a coolant flow inlet that provides communication between the hollow part and the cooling flow passage, and a coolant supply shaft extending through the hollow part. The coolant supply shaft has a coolant discharge port that discharges the liquid coolant to the hollow part. A position in a rotor axial direction of the coolant flow inlet deviates from a position in the rotor axial direction of the coolant discharge port.

主权项

1. A rotary electric machine comprising:
a rotor having a cooling flow passage through which a liquid coolant flows; and a rotor shaft fixed to an inner peripheral surface of the rotor, the rotor shaft having:
a hollow part to which the liquid coolant is supplied,a coolant flow inlet that provides communication between the hollow part and the cooling flow passage, anda coolant supply shaft extending through the hollow part, the coolant supply shaft having a coolant discharge port that discharges the liquid coolant to the hollow part, wherein a position in a rotor axial direction of the coolant flow inlet deviates from a position in the rotor axial direction of the coolant discharge port.