Centrifugal cooling fan of portable electronic device

The invention provides a centrifugal cooling fan of a portable electronic device. The centrifugal cooling fan comprises a hub, a plurality of metal blades and at least one wheel ring, the metal blades are arranged around the hub. The metal blades include a variety of radial dimensions, wherein the structure with a shorter radial dimension is local to the structure with a longer radial dimension. The metal blades with different radial sizes form at least two ring areas, and the distribution numbers of the metal blades in the at least two ring areas are different from each other. The wheel ring surrounds the hub and is connected with the metal blades. 本发明提供一种可携式电子装置的离心式散热风扇，包括轮毂、多个金属叶片以及至少一轮环。金属叶片环绕轮毂设置。金属叶片包括多种径向尺寸，其中径向尺寸较短者的结构是径向尺寸较长者的结构的局部。具有不同径向尺寸的金属叶片形成至少两个环区，且所述至少两个环区内的金属叶片的分布数量彼此相异。轮环环绕轮毂且连结金属叶片。