Heat-dissipating module and method for manufacturing the same

Abstract

In a heat-dissipating module and a method for manufacturing the same, a hollow aluminum tube is put on a corresponding heat pipe to form an aluminum-skinned heat pipe. Then, one or more aluminum-skinned heat pipes are disposed in a casting space of a die casting mold. Fins are disposed into the die casting mold. Molten aluminum materials are filled in the casting space of the die casting mold to form a heat-dissipating module. By using a die casting process, molten aluminum materials are used to cover at least one aluminum-skinned heat pipe and connect with the fins, thereby finishing the heat-dissipating module.

What is claimed is: 
     
         1 . A method for manufacturing a heat-dissipating module, including steps of:
 a) putting a hollow aluminum tube ( 110 ) on a corresponding heat pipe ( 111 ) to form an aluminum-skinned heat pipe ( 11 );   b) disposing at least one aluminum-skinned heat pipe ( 11 ) into a casting space ( 22 ) of a die casting mold ( 2 ), disposing a plurality of fins ( 12 ) in the casting space ( 22 ) of the die casting mold ( 2 ); and   c) filling aluminum materials into the casting space ( 22 ) of the die casting mold ( 2 ) to form a heat-dissipating module ( 1 ), wherein the heat-dissipating module ( 1 ) comprises an aluminum base ( 10 ), the at least one aluminum-skinned heat pipe ( 11 ), and the plurality of fins ( 12 ), and the aluminum base ( 10 ) covers the at least one aluminum-skinned heat pipe ( 11 ) and is combined with the fins ( 12 ).   
     
     
         2 . The method according to  claim 1 , wherein the aluminum-skinned heat pipe ( 11 ) in the step a) is made by stretching the hollow aluminum tube ( 110 ) to cover the heat pipe ( 111 ). 
     
     
         3 . The method according to  claim 2 , further including a step of sealing both ends ( 113 ) of the hollow aluminum tube ( 110 ) with two aluminum sealing heads ( 112 ). 
     
     
         4 . The method according to  claim 1 , wherein the die casting mold ( 2 ) in the step b) comprises a first mold part ( 20 ) and a second mold part ( 21 ), and the first mold part ( 20 ) and the second mold part ( 21 ) are brought into tight contact with each other to form the casting space ( 22 ) in which the aluminum base ( 10 ) is formed. 
     
     
         5 . The method according to  claim 4 , wherein the first mold part ( 20 ) is located below the second mold part ( 21 ). 
     
     
         6 . The method according to  claim 4 , wherein the first mold part ( 20 ) is located above the second mold part ( 21 ). 
     
     
         7 . The method according to  claim 4 , wherein the second mold part ( 21 ) is provided with a plurality of through troughs ( 210 ) in communication with the casting space ( 22 ), and the fins ( 12 ) are disposed through the through troughs ( 210 ) respectively. 
     
     
         8 . A heat-dissipating module, including:
 an aluminum base ( 10 ) having a surface ( 100 );   at least one aluminum-skinned heat pipe ( 11 ) disposed in the aluminum base ( 10 ); and   a plurality of fins ( 12 ) erecting on the surface ( 100 ) of the aluminum base ( 10 ) at intervals;   wherein the aluminum-skinned heat pipe ( 11 ) comprises a heat pipe ( 111 ) and an aluminum tube ( 110 ) covering the heat pipe ( 111 ).   
     
     
         9 . The heat-dissipating module according to  claim 8 , wherein the aluminum base ( 10 ) is made of aluminum-based metals or alloys thereof. 
     
     
         10 . The heat-dissipating module according to  claim 8 , wherein the aluminum-skinned heat pipes ( 11 ) are disposed in the aluminum base ( 10 ) at intervals. 
     
     
         11 . The heat-dissipating module according to  claim 8 , wherein the aluminum-skinned heat pipe ( 11 ) is sealed by aluminum sealing heads ( 112 ) at both ends ( 113 ) of the aluminum tube ( 110 ). 
     
     
         12 . The heat-dissipating module according to  claim 11 , wherein the aluminum sealing heads ( 112 ) are made of the same material as that of the aluminum tube ( 110 ) or the aluminum base ( 10 ). 
     
     
         13 . The heat-dissipating module according to  claim 8 , wherein the aluminum tube ( 110 ) is made of the same material as that of the aluminum base ( 10 ). 
     
     
         14 . The heat-dissipating module according to  claim 8 , wherein the aluminum tube ( 110 ) is a hollow pipe to be put on the heat pipe ( 111 ). 
     
     
         15 . The heat-dissipating module according to  claim 8 , wherein each fin ( 12 ) has a heat-dissipating portion ( 120 ) and a connecting portion ( 121 ) formed at a distal end of the heat-dissipating portion ( 120 ), and the connecting portion ( 121 ) is connected into the aluminum base ( 10 ). 
     
     
         16 . The heat-dissipating module according to  claim 15 , wherein the connecting portion ( 121 ) of each fin ( 12 ) is provided with laterally-protruding insertion portions ( 122 ).