Micro Cooling Fan detail design

"Micro Cooling Fan" blade Arc: In addition to the fan blades have a curvature in cross section, but in the top plan also extends along the radial direction is not straight, but curved slightly toward the direction of rotation, was a certain arc. If the fan blades radially extending straight, driven by rotation of the fan airflow at the outlet side will show a scattering state, air distance is short, and "power" is not focused; if the current product version slightly curved, can guarantee the blown air concentrated within the columnar space in front of the outlet, increase air distance and pressure.
"Micro Cooling Fan" spindle diameter: Because of the motor and bearings, the central portion of the spindle where the axial fan inevitably must not blind the airflow through the spindle diameter will determine the size of this gray zone. Spindle diameter size depends mainly on power "Micro Cooling Fan" motor - high power motor stator windings require greater inevitably take up more space, in the case can not scale up (increase height), they We had to scale (increase area).