| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve cooling performance of a stator even when rotation of a rotor is locked while cooling the stator by supplying the stator with coolant passing inside a rotation axis of the rotor. <P>SOLUTION: Discharge pressure of an oil pump 50 supplies a coolant passage 49 in a rotation axis 13 with coolant oil and the coolant oil is spouted out from each coolant discharge opening 48 toward a coil end part 22a. Moreover, reaction of a blowout force of the coolant oil from each of the coolant discharge openings 48 in parallel with a tangent line in a rotor circumferential direction causes a coolant discharge device 42 to rotate relative to the rotation axis 13 and a rotor 14 in an opposite direction of the blowout direction of the coolant oil. Thus, a circumferential position of a coolant oil supply in the coil end part 22a varies according to rotation of the coolant discharge device 42 even when rotation of the rotor 14 is locked. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
