Patent ID: 6936939

Claim:
A rotating electric machine comprising: a plurality of ventilating passages formed between a stator frame and a stator iron core; coolers provided in said plurality of ventilating passages; a fan for boosting a coolant; a first ventilating circuit in which the coolant boosted by said fan is introduced from the inner peripheral side of said stator iron core into some of said ventilating passages and is thereafter cooled by some of said coolers; and a second ventilating circuit in which the coolant boosted by said fan is initially cooled by some of said coolers and is thereafter allowed to flow to said stator iron core in the direction from the outer peripheral side to the inner peripheral side of said stator iron core via some of said ventilating passages; wherein at least one of said plurality of ventilating passages which communicates with a central portion of said stator iron core constitutes part of said second ventilating circuit.