Liquid cooling system

Abstract

A liquid cooling system includes a heat-radiating sheet having a pair of heat-conductive metal plates that are superimposed on each other, and having a circulating flow passage between the pair of heat-conductive metal plates; a plurality of heat-receiving areas partitioned on the heat-radiating sheet; a plurality of heat-generating elements installed on each of the heat-receiving areas via a heat spreader made of a heat-conductive material; an inlet hole and an outlet hole opened to the surface of the heat-radiating sheet and located at both ends of the circulating flow passage; a pump having a discharge port and a suction port that communicate with the inlet hole and the outlet hole, and installed on the heat-radiating sheet; and a radiator continuous with the circulating flow passage of the heat-radiating sheet.

1 . A liquid cooling system comprising:
 a heat-radiating sheet having a pair of heat-conductive metal plates that are superimposed on each other, and having a circulating flow passage between the pair of heat-conductive metal plates;   a plurality of heat-receiving areas partitioned on the heat-radiating sheet;   a plurality of heat-generating elements installed on each of the heat-receiving areas via a heat spreader made of a heat-conductive material;   an inlet hole and an outlet hole opened to the surface of the heat-radiating sheet and located at both ends of the circulating flow passage;   a pump having a discharge port and a suction port that communicate with the inlet hole and the outlet hole, and installed on the heat-radiating sheet; and   a radiator continuous with the circulating flow passage of the heat-radiating sheet.   
   
   
       2 . The liquid cooling systems according to  claim 1 ,
 wherein the plurality of heat-receiving areas are partitioned via easily deformable portions formed in the heat-radiating sheet.   
   
   
       3 . The liquid cooling system according to  claim 2 ,
 wherein the easily deformable portions are slits formed in at least one of the pair of heat-conductive metal plates that constitute the heat-radiating sheet.   
   
   
       4 . The liquid cooling system according to  claim 1 ,
 wherein the heat-radiating sheet and the radiator defines a planar U-shaped space, and a fan that gives cooling air to the radiator is arranged in the U-shaped space.   
   
   
       5 . The liquid cooling system according to  claim 1 ,
 wherein the heat-generating elements are located on any one of the surface and back of the heat-radiating sheet, and the pump is located on the other face thereof.   
   
   
       6 . The liquid cooling system according to  claim 1 ,
 wherein the inlet hole and outlet hole of the circulating flow passage are formed as cylindrical projections in the heat-radiating sheet, and the discharge port and suction port of the pump are formed as a discharge port that communicates with the cylindrical projection serving as the inlet hole, and a suction port that communicates with the cylindrical projection serving as the outlet hole.   
   
   
       7 . The liquid cooling system according to  claim 1 ,
 wherein the pump is a piezoelectric pump.   
   
   
       8 . The liquid cooling system according to  claim 1 ,
 wherein the heat-generating elements include a CPU and a GPU of a notebook computer.   
   
   
       9 . The liquid cooling system of the  claim 1 ,
 wherein the radiator has a plurality of stacked flow passage units, and each of the flow passage units includes the inlet hole and the outlet hole, and a cooling flow passage connecting the inlet hole and the outlet hole.   
   
   
       10 . The liquid cooling system according to  claim 9 ,
 wherein each flow passage unit is formed by stacking and coupling a pair of flow passage plates that form a liquid flow passage that is bent into a U shape at least once, and the inlet hole and the outlet hole are bored in the pair of flow passage plates.   
   
   
       11 . The liquid cooling system according to  claim 9 ,
 wherein the pair of flow passage plates that constitute each flow passage unit has a plane-symmetrical shape that is symmetrical with respect to superimposed faces, and have a flow passage recess that forms a planar U-shape, and the inlet hole and the outlet hole that are formed at one end and the other end of the flow passage recess.