Centrifugal heat dissipation fan

Abstract

A centrifugal heat dissipation fan including a housing and an impeller is provided. The housing has at least one air inlet on an axial direction and at least one air outlet on a radial direction. The impeller has a hub and a plurality of blades surrounding the hub. The hub drives the blades to rotate in the housing to generate an airflow flowing into the housing via the air inlet and out of the housing via the air outlet. The blades are respectively extended from the hub and has have at least two lengths, such that a variation of pressure change of the airflow is generated.

Dependencies are inferred from the claim text.