As a runoff "Waterproof Cooling Fan", the turbo fan blades and perpendicular to the plane of rotation, annular arrangement by the axial air into the space enclosed by the annular blade centrifugal effect is driven rotary blades lateral thrown in peripheral blades form a swirling airflow scattering, and then subjected to frame the diversion, the opening cut from one side to blow. Turbo "Waterproof Cooling Fan" using centrifugal diversion significantly reduced airflow turbulence, blind spot disappears, and the noise level is also greatly reduced compared with axial fans. Break the traditional notebook cooling mode, heat dissipation structure for scientific improvement - twin-turbo engine, 90-degree flow channel design, take full advantage of the turbine "Waterproof Cooling Fan" cooling advantages, significantly reduced airflow turbulence, blind spots disappear.