| 摘要 |
FIELD: electricity.SUBSTANCE: invention is referred to liquid-cooled electrical machine. The electrical machine comprises the main body, rotor shaft and heat exchanger. In the main body with rotor there are cooling channels for liquid cooling medium. The rotor is made as a hollow shaft through which liquid cooling medium passes; the rotor has inner tube. At that the heat exchanger, rotor shaft and cooling channels are interconnected hydraulically with formation of a closed circuit for liquid cooling medium. At the rotor shaft there is non-cranking transporting element, which is built-in into the closed circuit for liquid cooling medium; the above element forces circulation in the closed circuit for liquid cooling medium at rotation of the rotor shaft. In result of forced circulation by the transporting element liquid cooling medium flows from the heat exchanger to the rotor shaft, then it flows axially in inner tube, at the inner tube end it is outputted from the tube and flows back in the opposite direction in intermediate space between the rotor shaft and inner tube, wherefrom it passes to the cooling channels and from there back to the heat exchanger.EFFECT: improved cooling efficiency.5 cl, 3 dwg |
