Heat pipe-attached heat sink with bottom radiation fins

Abstract

A heat pipe-attached heat sink includes a radiation fin module having a plurality of radiation fins arranged in parallel, each radiation fin having an extension abutment strip, each extension abutment strip having a flat abutment edge extending perpendicular relative to the respective radiation fin and a plurality of locating grooves located on the flat abutment edge, heat pipes respectively press-fitted into the locating grooves of the extension abutment strips each having a flat heat-absorbing face kept in flush with the flat abutment edges of the radiation fins, a bonding agent applied to the locating grooves of the radiation fins to bond the heat pipes to the radiation fins, and stop blocks fastened to the radiation fins and stopped against the flat abutment edges of the radiation fins at one side to reinforce the structural strength.

1 . A heat pipe-attached heat sink, comprising:
 a radiation fin module, said radiation fin module comprising a plurality of radiation fins arranged in parallel, each said radiation fin comprising an extension abutment strip, said extension abutment strip comprising a flat abutment edge extending perpendicular relative to the respective radiation fin and a plurality of locating grooves located on said flat abutment edge, the flat abutment edge of one said radiation fin being stopped against the flat abutment edge of another said radiation fin in a flush manner;   a plurality of heat pipes respectively press-fitted into the locating grooves of said extension abutment strips of said radiation fins of said radiation fin module, each said heat pipe comprising a flat heat-absorbing face kept in flush with the flat abutment edges of said radiation fins of said radiation fin module; and   a bonding agent applied to said locating grooves of said radiation fins to bond said heat pipes to said radiation fins.   
     
     
         2 . The heat pipe-attached heat sink as claimed in  claim 1 , wherein said heat pipes are peripherally and tightly abutted against one another. 
     
     
         3 . The heat pipe-attached heat sink as claimed in  claim 1 , wherein said bonding agent is selected from tin solder or a material having high heat transfer coefficient. 
     
     
         4 . The heat pipe-attached heat sink as claimed in  claim 1 , further comprising a plurality of stop blocks fastened to said radiation fins and stopped against at least one of two opposite lateral sides of said flat abutment edges of said radiation fins of said radiation fin module. 
     
     
         5 . The heat pipe-attached heat sink as claimed in  claim 4 , wherein each said stop block comprises a plurality of retaining grooves and retaining ribs located on a bottom side thereof and forced into engagement with said radiation fins. 
     
     
         6 . The heat pipe-attached heat sink as claimed in  claim 4 , wherein each said stop block has a top end edge kept in flush with the flat heat-absorbing faces of said heat pipes and the flat abutment edges of said radiation fins of said radiation fin module. 
     
     
         7 . The heat pipe-attached heat sink as claimed in  claim 1 , wherein each said radiation fin further comprises a bottom notch located on a bottom side of each locating groove thereof for the filling of said bonding agent into the associating locating groove. 
     
     
         8 . The heat pipe-attached heat sink as claimed in  claim 1 , wherein each said heat pipe has a heat discharging end extending out of said radiation fin module and then turned back and inserted into said radiation fin module again. 
     
     
         9 . The heat pipe-attached heat sink as claimed in  claim 1 , wherein each said heat pipe has a heat discharging end extending out of said radiation fin module and then inserted into an external radiation fin module. 
     
     
         10 . The heat pipe-attached heat sink as claimed in  claim 1 , wherein said heat pipes each have a heat discharging end extending out of said radiation fin module in one of two reversed directions and then turned back and inserted into said radiation fin module again.