"Micro Cooling Fan" is negative, this is not difficult to understand, the air is forward, the pressure will be reduced after the ring, and lead to the rear of more air is added to balance the air pressure - in terms of the role of these two physical under air, or blade less fan air flow, is significantly enlarged reach turbo "Micro Cooling Fan" 15 times itself withdrawals Meanwhile blade less fan use of aircraft turbine engine theory, there is the air inlet and outlet, the inlet port the cylindrical position, outlet air is there. Motor driven rotary blades rotating inner cylinder, "Micro Cooling Fan" blown air damper blades rotating the ring gap, since the reduction of air within the cylinder, and the atmospheric pressure, the air inlet where the inlet and automatically in the atmosphere under pressure, the intake rate increase, so no leaf fan wind magnified. Blade less fan can send 15 times the effect of the wind