Airflow into the "Micro Cooling Fan" There are three ways the current collector. One is the freedom of the air intake; the other is a suction pipe intake, the manner required to ensure sufficient axial suction tube length; another one is the airbox intake, when the suction pipe imports need to set before when the change to the elbow, required before the "Micro Cooling Fan" collector installed airbox intake to replace the intake elbow, the situation can improve airflow into the wind. Inlet box shape and dimensions will affect the performance of the fan, in order to make the air intake box to the "Micro Cooling Fan" provide good fan inlet conditions, there are certain requirements of its shape and size.