The role of 220V Cooling Fan framework

One kind of "220V Cooling Fan" framework, the fan frame contains a hollow shell seat, and a seat disposed in the housing board. The seat shell comprises a ring wall, a wall of the ring surrounded by a defined receiving space and a plurality of projecting to the ring wall projecting ribs. The ring wall having a face into the wind, an outlet side, and a connection to the connection surfaces of the plane into the wind, and the wind surface between, "220V Cooling Fan" into the wind surface and the wind surface is to a direction away from each other extends obliquely, the projecting ribs protruding to the ring on the wall, so that the ring wall forming a stepped incline aspect, two adjacent projecting ribs are formed corresponding recess. Impact noise produced at the time by the ring wall of the recess formed by the protruding ribs, "220V Cooling Fan" can effectively reduce the air flow, but also can reduce the airflow spoiler phenomenon, thereby increasing the amount of wind.