Waterproof Cooling Fan blade ingenious design

Tip Gap: How to adjust the gap between the "Waterproof Cooling Fan" fan frame that exists and is a big fan of the design problem. Here the gap is too small will make the airflow and the blade, frame friction, noise increases; the gap is due to the increased air flow, such as the impact of the flyback reduce fan efficiency.
Leaves smoothness: "h5雷竞技 " is a non-target design factors, basically depends on the forming mold producers and post-processing technology. In addition to the design curve is not flat blades will produce turbulence in the rotation, increasing friction, reduce fan efficiency impairment "h5雷竞技 " performance, increased operating noise.