Patent ID: 7238004

Claim:
A serial fan comprising: a frame; a first rotor vane having a first hub and at least one first blade connected to the first hub; a second rotor vane having a second hub and at least one second blade connected to the second hub; a first motor within the first hub for driving the first rotor vane; a second motor within the second hub for driving the second rotor vane; a first support connected to the frame through a plurality of first connecting parts for receiving the first motor; and a second support connected to the frame through a plurality of second connecting parts for receiving the second motor, wherein the first rotor vane and the second rotor vane are disposed in series in the frame along an axial direction and the plurality of first and second connecting parts are disposed therebetween, the first rotor vane and the second rotor vane are disposed on opposite sides of the plurality of first and second connecting parts, and the plurality of first and second connecting parts are combined to form air-guiding blades.