| 摘要 |
The invention relates to a hollow rotor shaft for the rotor of an electric motor, comprising a cylindrical casing which is closed at both ends by end flanges and surrounds a shaft cavity, wherein a shaft journal is formed on each of the end flanges and wherein in one of the shaft journals an inlet is provided, through which a cooling liquid enters the shaft cavity and reaches the inner surface of the cylinder, said rotor shaft also comprising a distribution element which is disposed in the shaft cavity and receives the cooling liquid entering via the inlet, guides said liquid over a rotationally symmetrical diverting surface in the direction of the inner surface of the cylindrical casing, and passes said liquid via a mouth region onto the inner surface. |
