Heat dissipation device

Abstract

A heat dissipation device includes a fin assembly including a plurality of fins and a heat conductive member. Each individual fin includes a main body with one through hole and a sleeve installed in the through hole of the main body. The sleeve has a hole defined therethrough. The heat conductive member has higher heat conductivity than the main bodies of the fins, and is installed into the through hole of the each individual fin via extension through the hole of the sleeve. The main body and the sleeve of the each individual fin are made of different materials so that the sleeve serves as a transition component for facilitating soldering the each individual fin on the heat conductive member and heat conduction from the heat conductive member to the main body of the each individual fin.

1 . A heat dissipation device comprising:
 a fin assembly comprising a plurality of fins, each individual fin comprising a main body with one through hole and a sleeve installed in the through hole of the main body, the sleeve having a hole defined therethrough; and   a heat conductive member being installed into the through hole of the each individual fin via extending through the hole of the sleeve, wherein the main body and the sleeve of the each individual fin are made of different materials so that the sleeve serves as a transition component for facilitating soldering of the each individual fin on the heat conductive member, the material for making the main body having a heat conductivity smaller than that of the material for making the sleeve.   
     
     
         2 . The heat dissipation device as claimed in  claim 1 , wherein the sleeve is in an interference fit with the through hole. 
     
     
         3 . The heat dissipation device as claimed in  claim 1 , wherein the sleeve comprises a body inserted into the through hole of the main body. 
     
     
         4 . The heat dissipation device as claimed in  claim 3 , wherein the sleeve comprises a lip abutting against one side of the main body. 
     
     
         5 . The heat dissipation device as claimed in  claim 4 , wherein the main body comprises a wall protruding from an edge of the through hole, and an outer surface of the sleeve is in an interference fit with the wall. 
     
     
         6 . The heat dissipation device as claimed in  claim 5 , wherein the lip of the sleeve is formed at one end of the sleeve, and a flange is formed at opposite end of the sleeve, the flange of the sleeve engaging with a free end of the wall of the main body so that the main body is held between the flange and the lip of the sleeve. 
     
     
         7 . The heat dissipation device as claimed in  claim 1 , wherein the heat conductive member comprises a heat pipe adapted for thermally engaging with a heat-generating component. 
     
     
         8 . The heat dissipation device as claimed in  claim 1 , wherein the main body is made of aluminum, while the sleeve is made of one of copper and silver. 
     
     
         9 . The heat dissipation device as claimed in  claim 1 , wherein the hole in the sleeve has an inner diameter larger than an outer diameter of the heat conductive member and the sleeve has an outer diameter larger than an inner diameter of the through hole of the main body. 
     
     
         10 . The heat dissipation device as claimed in  claim 1 , wherein the heat conductive member and the main body of the each individual fin are separated from each other by the sleeve of the each individual fin so that the heat conductive member is in indirect thermal engagement with the main body of the each individual fin. 
     
     
         11 . A fin assembly comprising:
 a plurality of fins, each individual fin comprising:   a main body with one through hole; and   a sleeve assembled in the through hole of the main body, the sleeve overlapping an inner surface of the through hole of the main body; wherein the main body and the sleeve are made of different materials so that the sleeve serves as a transition component between the each individual fin and a heat conductive member extending through the through hole of the main body.   
     
     
         12 . The fin assembly as claimed in  claim 1 , wherein the main body comprises a wall protruding from an edge of the through hole, the wall enclosing an outer surface of the sleeve. 
     
     
         13 . The fin assembly as claimed in  claim 12 , wherein the sleeve comprises a body enclosed by the wall of the main body, and a lip abutting against one side of the main body. 
     
     
         14 . The fin assembly as claimed in  claim 13 , wherein the body and the lip of the sleeve are located on opposite sides of the main body. 
     
     
         15 . The fin assembly as claimed in  claim 13 , wherein the sleeve comprises a flange engaging with a free end of the wall of the main body so that the main body is held between the flange and the lip of the sleeve. 
     
     
         16 . The fin assembly as claimed in  claim 1 , wherein the main body is made of aluminum, while the sleeve is made of one of copper and silver. 
     
     
         17 . The fin assembly as claimed in  claim 11 , wherein the material for forming the sleeve has a heat conductivity higher than that of the material for forming the main body of the each individual fin. 
     
     
         18 . The fin assembly as claimed in  claim 17 , wherein the material for forming the sleeve can be more easily soldered to the heat conductive member than the material for forming the main body of the each individual fin. 
     
     
         19 . The fin assembly as claimed in  claim 11 , wherein the material for forming the sleeve can be more easily soldered to the heat conductive member than the material for forming the main body of the each individual fin. 
     
     
         20 . The fin assembly as claimed in  claim 19 , wherein the material for forming the sleeve is copper and the heat conductive member is a heat pipe.