Axial flow fan with rotor blades and static front guide blades distributed in long-short staggered manner

The invention discloses an axial flow fan with rotor blades and static front guide blades distributed in long-short staggered manner. The axial flow fan comprises a front air duct, an air cylinder, animpeller, a driving motor and a front mesh enclosure; the driving motor is installed on a motor installation plate of the front air duct; the front air duct supports the driving motor; the axial sizeof the front air duct is overlapped with that of the motor; the axial space of the front air duct is fully utilized, and the axial length of the axial flow fan is effectively shortened; meanwhile, air flowing through the front air duct flows through the outer surface of the driving motor to cool the driving motor, and the impeller is an axial flow type impeller and is installed at the shaft extension end of the driving motor; during work, the impeller rotates to generate negative pressure to suck in external air, and finally the external air is conveyed to a high-temperature brake resistancetape at the rear end to dis