Abstract: A cooling structure for a rotary electric machine includes: a plurality of cooling holes provided such that the cooling holes penetrate from an outer peripheral surface of a stator core to respective slots; a refrigerant supply mechanism configured to supply liquid refrigerant to supply cooling holes among the cooling holes, the supply cooling holes being configured such that radially outer ends of the supply cooling holes are placed above radially inner ends of the supply cooling holes in the gravitational direction; and a refrigerant guide provided between a rotor and a stator and configured to catch the liquid refrigerant falling down from the radially inner ends of the supply cooling holes through their corresponding slots and to guide the liquid refrigerant to slots placed on the lower side in the gravitational direction among the slots.

Abstract: A cooling structure for a rotary electric machine includes: a plurality of cooling holes provided such that the cooling holes penetrate from an outer peripheral surface of a stator core to respective slots; a refrigerant supply mechanism configured to supply liquid refrigerant to supply cooling holes among the cooling holes, the supply cooling holes being configured such that radially outer ends of the supply cooling holes are placed above radially inner ends of the supply cooling holes in the gravitational direction; and a refrigerant guide provided between a rotor and a stator and configured to catch the liquid refrigerant falling down from the radially inner ends of the supply cooling holes through their corresponding slots and to guide the liquid refrigerant to slots placed on the lower side in the gravitational direction among the slots.