Fan module

Abstract

A fan module includes a heat transfer unit, a heat radiation unit, and at least one cross-flow fan. The heat radiation unit has an air-in side and an air-out side. The cross-flow fan is located against the heat radiation unit, and includes a frame and a centrifugal fan blade assembly. The frame has an air outlet, a plurality of air inlets, and a plurality of frame sections. The frame sections respectively have a receiving recess therein, and the receiving recesses are communicable with one another to together define a receiving space for receiving the centrifugal fan blade assembly therein. With the above arrangements, the cross-flow fan can create increased air flow volume, the space occupied by the fan module can be reduced, and upgraded heat dissipation performance can be achieved.

What is claimed is: 
     
         1 . A fan module, comprising:
 a heat transfer unit having an end attached to a heat source;   a heat radiation unit being connected to another opposite end of the heat transfer unit and having an air-in side and an air-out side communicable with the air-in side; and   at least one cross-flow fan being located against the heat radiation unit, and including a frame and a centrifugal fan blade assembly; the frame having an air outlet facing toward the air-in side of the heat radiation unit, a plurality of air inlets, and a plurality of frame sections; the air inlets being respectively arranged between two adjacent frame sections and communicating with the air outlet; the frame sections respectively having a receiving recess therein, and the receiving recesses being communicable with one another to together define a receiving space; and the receiving space communicating with the air outlet and the air inlets and being used to receive the centrifugal fan blade assembly therein.   
     
     
         2 . The fan module as claimed in  claim 1 , wherein the frame further includes a first end plate and a second end plate that are separately located at two opposite ends 
     
     
         3 . The fan module as claimed in  claim 2 , wherein the centrifugal fan blade assembly includes a shaft and a plurality of impellers; and the shaft being sequentially extended through the impellers with two opposite ends of the shaft extending into the two shaft holes. 
     
     
         4 . The fan module as claimed in  claim 3 , wherein the impellers respectively include a plurality of blades, and the blades on each of the impellers being circumferentially spaced on the shaft and received in a corresponding one of receiving recesses of the frame sections. 
     
     
         5 . The fan module as claimed in  claim 1 , wherein the heat transfer unit further includes a heat-absorbing section and a heat-dissipating section; the heat-absorbing section being attached to the heat source; and the heat radiation unit being connected to the heat-dissipating section. 
     
     
         6 . The fan module as claimed in  claim 1 , wherein the cross-flow fan further includes at least one side plate, which is arranged at the air outlet of the frame. 
     
     
         7 . The fan module as claimed in  claim 1 , wherein the heat radiation unit is selected from the group consisting of a radiating fin assembly, a heat sink, and any element capable of radiating heat. 
     
     
         8 . The fan module as claimed in  claim 1 , wherein the heat transfer unit is selected from the group consisting of a heat pipe, a heat spreader, and any element capable of transferring heat. 
     
     
         9 . The fan module as claimed in  claim 7 , wherein the heat radiation unit includes a plurality of radiating fins; any two adjacent ones of the radiating fins together defining an air-guiding passage between them; and the air-guiding passages communicating with both of the air-in side and the air-out side. 
     
     
         10 . The fan module as claimed in  claim 2 , wherein the cross-flow fan further includes a motor, which can be arranged to one side of the first end plate or the second end plate.