Heat exchange fan, to disperse the heat flow problem of axial flow fan blade air moving in the same direction as the axial flow.
Axial flow fan impeller and propeller are similar.
Ac fan at work, the vast majority of the flow of air flow parallel to the axis, in other words, along the axis direction.
Axial flow fan when the inlet air flow is 0 static free air, zui power loss is low, when running with airflow backpressure increases power consumption will increase.
Ac fan is usually served on electrical equipment cabinets, sometimes integration on the motor, because ac fan compact structure, can save a lot of space, easy installation at the same time, so widely used.
link: http:///products- dc fan
http:///products- cpid = 151 ac fan
cpid = 150