Liquid cooled heat sink for multiple separated heat generating devices

Abstract

A liquid cooled heat sink has a thermal conduction plate and a liquid cooling module. The liquid cooling module is attached securely to the thermal conduction plate and has a distribution tank, a collection tank and a pipe assembly. The pipe assembly has multiple pipes of at least two different gauges and each pipe has a pipe inlet and a pipe outlet respectively secured to the distribution tank and the collection tank. Since a sum of the gauges is increased and each pipe need not to be coiled, an extra strong pumping system is not needed and design complexity is reduced.

1 . A liquid cooled heat sink for multiple separated heat generating devices comprising:
 a thermal conduction plate having
 a contact surface thermal contacting with the multiple separated heat generating devices; 
 a cooling surface; and 
 two side edges; and 
   a liquid cooling module being attached securely to the thermal conduction plate and having
 a distribution tank being disposed adjacent to one of the side edges of the thermal conduction plate and having at least one distribution inlet and multiple distribution outlets; 
 a collection tank being located adjacent to one of the side edges of the thermal conduction plate and having multiple collection inlets and at least one collection outlet; and 
 a pipe assembly having
 multiple pipes of at least two different gauges and each pipe having a pipe inlet, a pipe outlet respectively secured to the distribution outlets and the collection inlets, thereby communicating with the distribution tank and the collection tank. 
 
   
     
     
         2 . The liquid cooled heat sink as claimed in  claim 1 , wherein the pipes have at least two different interior diameters to form the at least two different gauges. 
     
     
         3 . The liquid cooled heat sink as claimed in  claim 1 , wherein the pipes have different morphology of interior surfaces of the pipes to form the at least two gauges, wherein at least one pipe has a zigzag interior surface. 
     
     
         4 . The liquid cooled heat sink as claimed in  claim 1 , wherein the pipes have different morphology of interior surfaces of the pipes to form the at least two gauges, wherein at least one of the pipes has a ragged interior surface. 
     
     
         5 . The liquid cooled heat sink as claimed in  claim 3 , wherein the pipes have different morphology of interior surfaces of the pipes to form the at least two gauges, wherein at least one of the pipes has a ragged interior surface. 
     
     
         6 . The liquid cooled heat sink as claimed in  claim 1 , wherein the pipes have different morphology of interior surfaces of the pipes to form the at least two gauges, wherein at least one of the pipes has a grid embedded interior surface. 
     
     
         7 . The liquid cooled heat sink as claimed in  claim 3 , wherein the pipes have different morphology of interior surfaces of the pipes to form the at least two gauges, wherein at least one of the pipes has a grid embedded interior surface. 
     
     
         8 . The liquid cooled heat sink as claimed in  claim 5 , wherein the pipes have different morphology of interior surfaces of the pipes to form the at least two gauges, wherein at least one of the pipes has a grid embedded interior surface. 
     
     
         9 . The liquid cooled heat sink as claimed in  claim 8 , wherein the liquid cooling module is mounted securely on the cooling surface of the thermal conduction plate. 
     
     
         10 . The liquid cooled heat sink as claimed in  claim 8 , wherein the liquid cooling module is formed in the thermal conduction plate. 
     
     
         11 . The liquid cooled heat sink as claimed in  claim 1 , wherein
 the thermal conduction plate has   two plates each having an inner surface, the inner surface of each plate having a recessed distribution tank, a recessed collection tank and a recessed pipe assembly that are corresponding respectively to the distribution tank, collection tank and pipes, wherein depths of the recessed pipes correspond to gauges of the pipes.   
     
     
         12 . The liquid cooled heat sink as claimed in  claim 1 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         13 . The liquid cooled heat sink as claimed in  claim 2 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         14 . The liquid cooled heat sink as claimed in  claim 3 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         15 . The liquid cooled heat sink as claimed in  claim 4 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         16 . The liquid cooled heat sink as claimed in  claim 5 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         17 . The liquid cooled heat sink as claimed in  claim 6 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         18 . The liquid cooled heat sink as claimed in  claim 7 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         19 . The liquid cooled heat sink as claimed in  claim 8 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges. 
     
     
         20 . The liquid cooled heat sink as claimed in  claim 9 , wherein the pipes of the pipe assembly have different lengths, and longer pipes have larger gauges.