"220V Cooling Fan" blades push air to flow in the same direction with the shaft. The axial flow fan impellers and propellers somewhat similar, it is at work, most of the airflow flows parallel to the axis, in other words in the axial direction. "220V Cooling Fan" when the inlet air flow is zero static pressure of free air time, its lowest power consumption when running back pressure will rise as stream power consumption will increase. "220V Cooling Fan" is usually installed in the electrical equipment cabinet, sometimes integrated in the motor, because of its compact axial fan structure, you can save a lot of space and easy installation, and therefore widely used.