| 摘要 |
During operation of a rotary electric machine the more dense oil tends to collect in the high centrifugal force field spaced from the rotational axis of a rotor, while the less dense air collects in a low centrifugal force area surrounding the rotational axis of the rotor. This problem is solved by the rotary electric machine including a stator (10). The rotor (22) journalled for rotation relative to the stator about an axis of rotation and carrying electrical windings (24). The rotor includes a fluid inlet (26) spaced from a fluid outlet (28) and a cooling liquid flow path (34, 36, 38, 42, 44, 46, 48, 50, 52) is located in the rotor (22) interconnecting the inlet (26) and the outlet (28). The liquid flow path (34, 36, 38, 42, 44, 46, 48, 50, 52) is in heat relationship to the windings (24) and a least a part (48) thereof is displaced from the axis of rotation. A gas vent passage (54, 56, 58) is disposed in the rotor (22) to interconnect the inlet (26) and the outlet (28) and is located on the axis of rotation the thereby prevent gas bubbles tending to build from air entrained in the coolant on the axis of rotation. |
