Heat dissipating device

Abstract

A heat dissipating device includes a heat receiver, a fin member including a plurality of spaced fins defining aligned holes, and at least one heat pipe connecting the heat receiver with the fin member. Some of the fins adjacent the heat receiver define enlarged openings each communcating with a corresponding hole. The at least one heat pipe is U-shaped and includes an evaporative section attached to the heat receiver, a pair of condesative sections received in the holes of the fins, and a pair of curved sections connected between opposite ends of the evaporative section and the condensative sections respectively and received in the enlarged openings.

1 . A heat dissipating device comprising: 
 a heat receiver;    a fin member comprising a plurality of spaced fins defining aligned holes, some of the fins adjacent the heat receiver defining enlarged openings each communcating with a corresponding hole; and    at least one heat pipe connecting the heat receiver with the fin member, said heat pipe forming a curved section received in the enlarged openings.    
   
   
       2 . The heat dissipating device as claimed in  claim 1 , wherein said heat pipe is U-shaped and comprises an evaporative section, a pair of condensative sections, and a pair of curved sections connecting opposite ends of the evaporative section with the condensative sections respectively.  
   
   
       3 . The heat dissipating device as claimed in  claim 2 , wherein each of said some of the fins adjacent the heat receiver defines at least one pair of holes and a pair of enlarged openings located between the holes.  
   
   
       4 . The heat dissipating device as claimed in  claim 2 , wherein said at least one heat pipe comprises a pair of parallel heat pipes attached to the fin member and offseting from each other in the direction of the evaporative sections of the heat pipes.  
   
   
       5 . The heat dissipating device as claimed in  claim 2 , wherein the heat receiver defines at least one groove, and the evaporative section of said heat pipe is fixedly received in said groove.  
   
   
       6 . A heat dissipating device comprising: 
 at least one heat pipe comprising an evaporative section, a condensative section and a curved section connecting the evaporative section and the condensative section; and    a plurality of fins stacked along the condensative section of said heat pipe with the evaporative section exposed out of the fins;    some of the fins adjacent the evaporative section of said heat pipe defining enlarged openings at which the curved section is received.    
   
   
       7 . The heat dissipating device as claimed in  claim 6 , wherein each of the fins defines at least one hole for extension of the condensative section.  
   
   
       8 . The heat dissipating device as claimed in  claim 7 , wherein each of the enlarged openings communicates with a corresponding hole.  
   
   
       9 . The heat dissipating device as claimed in  claim 6 , wherein said at least one heat pipe comprises a pair of parallel heat pipes offseting from each other in the direction of the evaporative sections of the heat pipes.  
   
   
       10 . The heat dissipating device as claimed in  claim 6 , further comprising a heat receiver defining grooves at which the evaporative section is received.  
   
   
       11 . The heat dissipating device as claimed in  claim 10 , wherein the heat receiver is parallel to the fins.  
   
   
       12 . A method to manufacture a heat dissipating device, comprising the steps of: 
 providing a heat pipe comprising an evaporative section and a condensative section thermally communicable with said evaporative section;    thermally attaching said evaporative section to a heat receiver, further contactable to a heat source so as to gain heat therefrom;    thermally attaching said condensative section to a fin member having fins for heat dissipation; and    arranging said fin member so as to have a first group of fins thereof tightly surrounding an extending portion of said condensative section through said first group of fins, and a second group of fins thereof loosely surrounding another extending portion of said condensative section through said second group of fins.    
   
   
       13 . The method as claimed in  claim 12 , wherein an enlarged opening having a larger shape than a cross-sectional shape of said another extending portion of said condensative section is formed on each of said second group of fins so as to perform said loosely surrounding to said another extending portion of said condensative section.  
   
   
       14 . The method as claimed in  claim 13 , wherein a hole having a substantially same shape as a cross-sectional shape of said extending portion of said condensative section is formed on each of said first group of fins so as to perform said tightly surrounding to said extending portion of said condensative section.  
   
   
       15 . The method as claimed in  claim 12 , wherein said second group of fins is closer to said evaporative section of said heat pipe than said first group of fins.  
   
   
       16 . The method as claimed in  claim 12 , wherein said extending portion of said comdensative section is linear, and said another extending portion of said condensative section is non-linear.