To provide a water channel structure that prevent the degradation in cooling efficiency due to stagnation of cooling water that occurs in proximity to a cooling liquid discharge port.
A rotary electric machine includes a stator 3 and a rotor 4 rotatably held in the stator 3 with a predetermined gap in-between. A cooling liquid passage 15 is positioned on the outer circumferential surface of the stator 3 and is formed in a band shape in the circumferential direction by a bracket. The cooling liquid passage 15 includes: a boundary wall 131; a cooling liquid feed port 111 provided on one side of the boundary wall 131; and a cooling liquid discharge port 112 provided on the other side. The boundary wall 131 is so formed that the distance between the boundary wall 131 and the cooling liquid discharge port 112 is shorter than the distance between the boundary wall 131 and the cooling liquid feed port 111.
SAITO YASUYUKI
GOTO TSUYOSHI
Yuji Toda
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