Heat exchanger

Abstract

A heat exchanger including a first heat sink, a second heat sink and a water-cooling unit. The first heat sink has a first contact section and multiple radiating fins. At least one cooling chip is attached to the first contact section. At least one first fan is disposed on the radiating fins. The second heat sink has multiple radiating fins and a second contact section. A second fan is positioned on the radiating fins and connected thereto. The second contact section is attached to a face of the cooling chip opposite to the first heat sink. The water-cooling unit has a water tank section and a pipe section having a first end and a second end, which are connected to the water tank section. The pipe section is inlaid in the first contact section and the water tank section is disposed on the radiating fins of the second heat sink.

1 . A heat exchanger comprising:
 a first heat sink having a first contact section and multiple radiating fins, at least one cooling chip being attached to the first contact section, at least one first fan being disposed on the radiating fins;   a second heat sink having multiple radiating fins and a second contact section, a second fan being positioned on upper side of the radiating fins and connected thereto, the second contact section being attached to the other face of the cooling chip opposite to the first heat sink; and   a water-cooling unit having a water tank section and a pipe section, the pipe section having a first end and a second end, which are connected to the water tank section, the pipe section being inlaid in the first contact section of the first heat sink, the water tank section being disposed on the upper side of the radiating fins of the second heat sink.   
     
     
         2 . The heat exchanger as claimed in  claim 1 , wherein the cooling chip has a hot face and a cold face, the hot face being attached to the second contact section of the second heat sink, while the cold face being attached to the first contact section of the first heat sink. 
     
     
         3 . The heat exchanger as claimed in  claim 1 , wherein the water tank section has a chamber and a pump disposed in the chamber, a heat dissipation fluid being contained in the chamber, the pipe section communicating with the chamber, one of the first and second ends of the pipe section being connected to the pump. 
     
     
         4 . The heat exchanger as claimed in  claim 1 , wherein the first contact section of the first heat sink is formed with at least one groove for receiving the pipe section therein, the pipe section contacting with the cooling chip. 
     
     
         5 . The heat exchanger as claimed in  claim 1 , wherein the radiating fins of the first heat sink are disposed on one side of the first heat sink opposite to the first contact section. 
     
     
         6 . The heat exchanger as claimed in  claim 1 , wherein the radiating fins of the second heat sink are disposed on one side of the second heat sink opposite to the second contact section. 
     
     
         7 . The heat exchanger as claimed in  claim 1 , wherein the pipe section further has a heat absorption portion between the first and second ends.