Fans and electronic devices utilizing the same

Abstract

Electronic devices and fans thereof are provided. An electronic device comprises a fan cavity and separately disposed heat sources. A fan is disposed in the fan cavity with a frame shaped according to the profile of the fan cavity. The frame also includes an extended portion formed according to the relative position of the fan cavity and separated heat sources, optimizing the heat dissipation.

1 . An electronic device, comprising: 
 a housing;    at least a heat source disposed in the housing; and    a fan disposed in the housing, wherein the fan comprises a frame, the frame comprises an airflow outlet, an airflow inlet, and a first extended portion, the first extended portion is disposed at the airflow outlet or the airflow inlet, and an inclined angle, an extending direction or a position of the first extended portion is adjusted according to a position of the heat source.    
   
   
       2 . The electronic device as claimed in  claim 1 , wherein the shape of the frame is appropriately modified according to the housing.  
   
   
       3 . The electronic device as claimed in  claim 1 , wherein the frame further comprises a second extended portion, and the second extended portion is disposed at the airflow outlet or the airflow inlet where the first extended portion is not disposed.  
   
   
       4 . The electronic device as claimed in  claim 3 , wherein an inclined angle of the second extended portion is adjusted according to a position of the housing for increasing airflow.  
   
   
       5 . The electronic device as claimed in  claim 3 , wherein the inclined angles or the extended depths of the first and the second extended portions are different.  
   
   
       6 . The electronic device as claimed in  claim 3 , wherein the second extended portion comprises a plurality of segments, and the distance between each segment and an end of a blade of the fan is different.  
   
   
       7 . The electronic device as claimed in  claim 1 , wherein the sectional areas or the shape of the airflow inlet and the airflow outlet are different, or the airflow inlet and the airflow outlet are not parallel.  
   
   
       8 . The electronic device as claimed in  claim 1 , wherein the frame is circular, oval, equilateral polygonal, scalene polygonal, trapezoidal, sectorial, or irregular shaped.  
   
   
       9 . The electronic device as claimed in  claim 1 , wherein the first extended portion comprises a plurality of segments, and the distance between each segment and an end of a blade of the fan is different.  
   
   
       10 . The electronic device as claimed in  claim 1 , wherein the frame comprises a plurality of segments with different inclined angles or axial heights.  
   
   
       11 . A fan for dissipating heat from at least a heat source, comprising: 
 a frame comprising an airflow outlet, an airflow inlet, and a first extended portion, wherein the first extended portion is disposed at the airflow outlet or the airflow inlet, and an inclined angle, an extending direction or a position of the first extended portion is adjusted according to a position of the heat source; and    a blade disposed in the frame.    
   
   
       12 . The fan as claimed in  claim 11 , wherein the frame further comprises a second extended portion, and the second extended portion is disposed at one of the airflow outlet or the airflow inlet where the first extended portion is not disposed.  
   
   
       13 . The fan as claimed in  claim 12 , wherein the inclined angles or the extended depths of the first and the second extended portions are different.  
   
   
       14 . The fan as claimed in  claim 12 , wherein the second extended portion comprises a plurality of segments, and the distance between each segment and an end of the blade is different.  
   
   
       15 . The fan as claimed in  claim 11 , wherein the first extended portion comprises a plurality of segments, and the distance between each segment and an end of the blade is different.  
   
   
       16 . The fan as claimed in  claim 11 , wherein the sectional areas or the shape of the airflow inlet and the airflow outlet are different, or the airflow inlet and the airflow outlet are not parallel.  
   
   
       17 . The fan as claimed in  claim 11 , wherein the frame comprises a plurality of segments, and the axial heights or the inclined angles of any two adjacent segments are different.  
   
   
       18 . The fan as claimed in  claim 11 , wherein the frame is circular, oval, equilateral polygonal, scalene polygonal, trapezoidal, sectorial, or irregular shaped.  
   
   
       19 . An electronic device comprising: 
 a housing comprising a fan cavity; and    a fan disposed in the fan cavity, wherein the fan comprises a frame, and the shape of the frame is adjusted according to that of the fan cavity.    
   
   
       20 . The electronic device as claimed in  claim 19 , wherein the frame comprises a plurality of segments, and the axial heights or the inclined angles of any two adjacent segments are different.