Schemes of the air flow directions in the axial fan
Given the airflow direction, in the horizontal axis fans can be made in two versions:
SW– the airflows from the motor through the impeller,
WS – the flow direction is: impeller – motor.
Standard fans are manufactured in the SW version. If the flow direction is not designated, the standard production type will be used.
To help in selection proper execution of fan, choose one of the schemes of flow direction which are above.