Flow direction diagram
SW – air flow from the motor to the impeller
WS – airflow from impeller to motor

Taking into account the direction of airflow, in the horizontal axis the fans can be made in two versions.
Knowledge
Wiedza
SW – air flow from the motor to the impeller
WS – airflow from impeller to motor
Taking into account the direction of airflow, in the horizontal axis the fans can be made in two versions.