Axial flow fan is mainly composed of 1-hub; 2 - leaf; 3 - axis; 4 - shell; 5- Air collector; 6- Streamline body; 7-rectifier; 8- Diffuser. And the air inlet and impeller composition. The air inlet is composed of an air collector and a streamline body, and the impeller is composed of hub 1 and blade2. The impeller and shaft 3 are fixed together to form the rotor of the fan, which is supported on the bearing.
When the motor drives the fan impeller to rotate, relative air flows through each blade.