Heat sink for chips

Abstract

A heat sink includes a first heat dispensing unit including multiple heat dispensing plates between which chips are clamped. A base board is connected on a top of the first heat dispensing unit and two engaging portions are connected to two ends of the base board. A second heat dispensing unit is fixed on a top of the base board. Two clamps connect the base board to the first heat dispensing unit. The second heat dispensing unit can be a fan, a water-cooling unit or an aluminum extruding member.

1 . A heat sink comprising:
 a first heat dispensing unit including multiple heat dispensing plates which are adapted to clamp chips therebetween;   a base board having a contact surface defined in an underside of the base board, the contact surface being in contact with a top of the first heat dispensing unit and two engaging portions connected to two ends of the base board, a second heat dispensing unit fixed on a top of the base board, and   two clamps connecting the base board to the first heat dispensing unit.   
   
   
       2 . The heat sink as claimed in  claim 1 , wherein each heat dispensing plate of the first heat dispensing unit includes recesses defined in two ends thereof and the clamps are engaged with the engaging portions of the base board and the recesses of the first heat dispensing unit. 
   
   
       3 . The heat sink as claimed in  claim 2 , wherein the engaging portions are slots. 
   
   
       4 . The heat sink as claimed in  claim 1 , wherein the base board includes a hole defined therethrough and the second heat dispensing unit is located corresponding to the hole. 
   
   
       5 . The heat sink as claimed in  claim 1 , the second heat dispensing unit is a fan. 
   
   
       6 . The heat sink as claimed in  claim 1 , the second heat dispensing unit is a water-cooling unit. 
   
   
       7 . The heat sink as claimed in  claim 1 , the second heat dispensing unit is an aluminum extruding member. 
   
   
       8 . The heat sink as claimed in  claim 1 , wherein each clamp includes a horizontal part with two flexible parts extending from two ends of the horizontal part, each flexible part includes an engaging part extending therefrom, the horizontal part are engaged with the recesses of the first heat dispensing unit and the engaging parts are engaged with the engaging portions of the base board. 
   
   
       9 . The heat sink as claimed in  claim 8 , wherein the horizontal part, the two flexible parts and the engaging parts of each clamp are rod-like pieces.