Cooler module

Abstract

A cooler module includes a heat sink formed of a stack of radiation fins each having a plurality of double-step mounting holes for allowing quick mounting of the radiation fins by fitting the annular outer step portions of the double-step mounting holes of one radiation fin tightly into the annular inner step portions of the double-step mounting holes of another radiation fin, a base block tightly fastened to the bottom side of the heat sink, a plurality of heat pipes tightly fitted into the double-step mounting holes of the radiation fins to reinforce engagement between the respective annular outer step portions with the corresponding annular inner step portions and tightly fitted into the bottom wall of the base block to secure the heat sink and the base block firmly together.

1 . A cooler module, comprising a heat sink formed of a stack of radiation fins, a base block attached to said heat sink, and a plurality of heat pipes tightly inserted through the radiation fins of said heat sink and closely attached to said base block, wherein:
 said radiation fins each have a plurality of double-step mounting holes, which receive said heat pipes tightly, said double-step mounting holes each having an annular inner step portion and an annular outer step portion, the annular outer step portion of each of the double-step mounting holes of said radiation fins being respectively and tightly fitted into the annular inner step portion of a corresponding double-step mounting hole of respective neighboring radiation fins; and said heat pipes are respectively tightly fitted into the double-step mounting holes of said radiation fins to force the annular outer step portions of the double-step mounting holes of said radiation fins against the annular inner step portions of the corresponding double-step mounting holes of said neighboring radiation fins.   
   
   
       2 . The cooler module as claimed in  claim 1 , wherein the annular inner step portions of said double-step mounting holes have an inner diameter smaller than the outer diameter of the annular outer step portions of said double-step mounting holes. 
   
   
       3 . The cooler module as claimed in  claim 1 , wherein the annular outer step portions of said double-step mounting holes have an inner diameter smaller than the outer diameter of said heat pipes. 
   
   
       4 . The cooler module as claimed in  claim 1 , wherein said heat sink has a bottom side configured to fit a top wall of said base block. 
   
   
       5 . The cooler module as claimed in  claim 1 , further comprising a thermal pad bonded to a bottom wall of said base block to cover said heat pipes and to hold down said heat pipes in the bottom wall of said base block. 
   
   
       6 . The cooler module as claimed in  claim 1 , wherein said heat pipes each have an extension arm tightly fitted into said base block. 
   
   
       7 . The cooler module as claimed in  claim 1 , wherein said heat pipes each have a U-turn tightly fitted into said base block.