| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cooling structure which is suitable for a multilayered motor by circulating a coolant to a water jacket in a stator so that the motor may be cooled effectively. SOLUTION: A cooling structure for a multilayered motor 1 in which an inner rotor 10 and an outer rotor 30 are concentrically arranged in a motor housing 41 is constituted in such a way that the rear end section of the stator 20 is supported by the housing 41 and outputs are taken out from the front end section of the outer rotor. Then a water jacket 80 which circulates a coolant is formed in the stator 20 and an inlet 85 and an outlet 86 through which the coolant is supplied to and discharged from the jacket 80 are connected to the rear end section of the stator 20. In addition, a U-turn flow passage 84 which changes the flowing direction of the coolant is provided at the front end section of the stator 20.</p> |
