Patent ID: 8556601

Claim:
A heat dissipating fan assembly; comprising: a carrier consisting of: a PCB base consisting of a base and a plurality of wires, wherein the wires working as a medium for transferring electricity or signals are directly printed on the base to form the PCB base; an axial tube mounted on the PCB base and made of a permeability material comprising iron, wherein a portion of the PCB base under the axial tube does not have a penetrating hole; and at least one coil mounted on the PCB base; and an impeller module mounted to the axial tube, wherein the impeller module comprises: an impeller; a plurality of vanes disposed on the circumferential surface of the impeller; a shaft directly inserted into the axial tube; and a permanent magnet mounted directly around the radially outer surface of the axial tube for attracting the axial tube; wherein the shaft and the permanent magnet are disposed on the same surface of the impeller, and the impeller module is coupled with the PCB base via a magnet attraction between the permanent magnet arid the axial tube; wherein the at least one coil is electrically connected with a power via the PCB base to interact with the permanent magnet, which in turns rotates the impeller module.