Cooling fan with fluid control device

摘要

A cooling fan with fluid control device comprises a fan blade assembly and a frame member. The frame member provides a hub seat movably attached with the fan blade assembly and formed with a plurality of fluid control elements at the inner side thereof to control radial pressure of fluid. The frame member at least has a fluid guide part connected to the fluid control elements with a first through hole and a second through hole being in the fluid guide part and the first through hole being greater than the second through hole. When the fan blade assembly rotates to move the fluid, the fluid can flow toward the center of the frame member by way of the fluid control elements and the fluid guide part to increase the amount of the fluid at the rear side of the hub seat.