Permanent magnetic suspension shaftless low-noise efficient axial flow fan

The invention relates to a permanent magnetic suspension shaftless low-noise efficient axial flow fan which comprises a fan barrel body, a static unit fixedly installed on the fan barrel body and a plurality of sets of power units rotationally installed on the fan barrel body and placed in series. The static unit comprises a front guide vane fixedly installed at the front end of the power unit and a rear guide vane fixedly installed at the rear end of the power unit. The power unit comprises a hollow motor rotor rotating around a fan barrel body, a plurality of shaftless blades fixed to the inner wall of the hollow motor rotor and a motor stator fixed to the fan barrel body. The axial-flow type ventilator solves the problems that an existing axial-flow type ventilator is small in flow area, low in air volume and low in operation efficiency due to the fact that a blocking structure useless for aerodynamic performance of the ventilator exists in a flow channel of the axial-flow type ventilator. 本发明涉及一种永磁磁悬浮无轴低噪