Patent ID: 7607886
Filing Date: 2009-10-27
Classification: F04D

Abstract:
1. A heat-dissipating device, comprising: a housing having at least one opening; a rotor disposed in the housing and having a base, a hub; a first set of blades disposed around the hub, and a second set of blades disposed on the base; and a driving device disposed inside the hub, wherein the housing has a sidewall and a flange radially extending from the bottom of the sidewall to define an entrance of an air-gathering chamber, the entrance is between the flange and the bottom of the housing, and the air-gathering chamber is between the sidewall and a peripheral wall of the housing, and wherein an outermost end of the flange is vertically aligned with an outermost end of at least one of the first set of blades and the second set of blades.