Rotor centrifugal fan structure of large asynchronous motor

The utility model discloses a rotor centrifugal fan structure of a large-scale asynchronous motor, which comprises an end ring arranged on a rotor iron core and a fan, the fan is composed of an inner plate, fan blades and an outer plate, the inner plate is a hard metal ring, the metal ring is arranged on the end face of the end ring to form a retaining ring of the end ring, and the outer plate is arranged on the end face of the end ring. The fan blades are arranged between the inner plate and the outer plate, and the outer plate supports the whole structure of the fan. According to the utility model, the fan structure is optimized, and the motor cooling effect can be improved. 本实用新型公开了一种大型异步电机的转子离心风扇结构，包括设置于转子铁心上的端环和风扇，所述风扇由内板、扇叶和外板组成，所述内板为硬质金属圈，该金属圈设置于所述端环的端面上，形成端环的护环，所述扇叶设置于所述内板和所述外板之间，所述外板对风扇的整体结构进行支撑。本实用新型优化了风扇结构，能够提升电机冷却效果。