Liquid cooling system, and electronic apparatus having the same therein

Abstract

In a cooling system of liquid type, dissolving a problem upon starting when applying a centrifugal pump therein, and being freely applicable into various kinds of electronic apparatuses, easily, for cooling a CPU in need of cooling thereof, which is mounted within a housing 100 , the system comprises: a cooling jacket 50 , a radiator 60 and a circulation pump, wherein the circulation pump is built up with a centrifugal pump, in which a rotor 730 having a plural number of blades formed in a centrifugal manner, a pump chamber 741 receiving the rotor in an inside thereof, and a field coil 712 of an electric motor for driving the rotor rotationally are formed into one body, and the pump chamber is disposed to located below the electric motor, thereby achieving the structure so that a liquid coolant fills up the pump chamber when stopping, in spite of the disposition of the circulation pump, thereby dissolving the problem of idling when starting.

1 . An electronic apparatus, installing a semiconductor element within a housing thereof, which necessitates cooling for maintaining normal operation thereof, in a part of the housing, and having a cooling system, within said housing or in a part thereof, said cooling system, comprising: 
 a cooling jacket, being thermally connected with said semiconductor element, for transmitting heat generated therein to a liquid coolant flowing within an inside thereof;    a radiator for radiating the heat transmitted into the liquid coolant within said cooling jacket into an outside of the apparatus; and    a circulation pump for circulating said liquid coolant in a loop, including said cooling jacket and said radiator therein, wherein:    said circulation pump is built up with a rotor formed with a plural number of blades in a centrifugal manner, a pump chamber receiving said rotor, in a rotatable manner, within an inside thereof, and an electric motor for rotationally driving said rotor, being formed together into one body, and said pump chamber is located in a lower portion of said electric motor.    
   
   
       2 . The electronic apparatus, as described in the  claim 1 , wherein said circulation pump building up said liquid cooling system has an inlet opening passage for guiding the liquid coolant into said pump chamber, and said inlet opening passage is formed, extending from an upper portion of said pump chamber to a lower portion thereof.  
   
   
       3 . The electronic apparatus, as described in the  claim 2 , wherein said inlet opening passage is formed within an inside of a rotation shaft, for supporting said rotor, rotatabley, in said circulation pump.  
   
   
       4 . The electronic apparatus, as described in the  claim 1 , wherein an outlet of the liquid coolant, coming out from said circulation pump building up said liquid cooling system, is formed at a position upper than the position of the blades of said rotor, which is disposed within said pump chamber.  
   
   
       5 . The electronic apparatus, as described in the  claim 1 , wherein said liquid cooling system further comprises a tank, which can supply the liquid coolant therein, always irrespective of direction of disposition thereof, and an outlet of said tank is connected to an inlet of said circulation pump.  
   
   
       6 . A liquid cooling system, for cooling a semiconductor element generating heat therefrom, comprising: 
 a cooling jacket, being thermally connected with said semiconductor element, for transmitting heat generated therein to a liquid coolant flowing within an inside thereof;    a radiator for radiating the heat transmitted into the liquid coolant within said cooling jacket into an outside of the apparatus; and    a circulation pump for circulating said liquid coolant in a loop, including said cooling jacket and said radiator therein, wherein:    said circulation pump is built up with a rotor formed with a plural number of blades in a centrifugal manner, a pump chamber receiving said rotor, in a rotatable manner, within an inside thereof, and an electric motor for rotationally driving said rotor, being formed together into one body, and said pump chamber is located in a lower portion of said electric motor.    
   
   
       7 . The liquid cooling system, as described in the  claim 6 , wherein said circulation pump building up said liquid cooling system has an inlet opening passage for guiding the liquid coolant into said pump chamber, and said inlet opening passage is formed, extending from an upper portion of said pump chamber to a lower portion thereof.  
   
   
       8 . The liquid cooling system, as described in the  claim 7 , wherein said inlet opening passage is formed within an inside of a rotation shaft, for supporting said rotor, rotatabley, in said circulation pump.  
   
   
       9 . The liquid cooling system, as described in the  claim 6 , wherein an outlet of the liquid coolant, coming out from said circulation pump building up said liquid cooling system, is formed at a position upper than the position of the blades of said rotor, which is disposed within said pump chamber.  
   
   
       10 . The liquid cooling system, as described in the  claim 6 , wherein said liquid cooling system further comprises a tank, which can supply the liquid coolant therein, always irrespective of direction of disposition thereof, and an outlet of said tank is connected to an inlet of said circulation pump.