Heat-removal device

Abstract

A heat-removal device for removing heat from a hot surface includes a housing containing a cooling fluid. The housing has a heat-absorption section, which is in contact with the hot surface. The housing also has a heat-dissipation section, which is cooled by natural or forced convection with ambient air. An internal impeller circulates the cooling fluid in a closed loop between the heat-absorption section and the heat-dissipation section to transport heat away from the hot surface to the ambient air.

1 ) A device for removing heat from a hot-surface, the device comprising:
 a generally closed chamber, the chamber having a first end-closure member, a second end-closure member, and an intermediate-member connecting the first end-closure member to the second end-closure member, the first end-closure member having a heat-absorbing section, the heat-absorbing section having an external surface in contact with the hot-surface and an internal surface, the second end-closure member and intermediate-member together or individually functioning as a heat-dissipation section which is exposed to the external environment; and a heat-conducting fluid located within the chamber, the heat-conducting fluid generally contacting both the internal surface of the heat-absorbing section and the internal surface of the heat-dissipation section.   
   
   
       2 ) The device of  claim 1 , further including a fluid-circulation means for circulating the heat-conducting fluid past the internal surface of the heat-absorbing section and the internal surface of the heat-dissipation section of the chamber. 
   
   
       3 ) The device of  claim 1 , further including an open fluid-flow-passage having a first open end submerged in the heat-conducting fluid adjacent to the internal surface of the heat-absorbing section of the chamber and having a second open end submerged in the heat-conducting fluid adjacent to the internal surface of the heat-dissipation of the chamber. 
   
   
       4 ) The device of  claim 2 , wherein the fluid-circulation means is an impeller, which is submerged within the heat-conducting fluid. 
   
   
       5 ) The device of  claim 3 , further including a fluid-circulation means for circulating the heat-conducting fluid through the fluid-flow-passage. 
   
   
       6 ) The device of  claim 5 , wherein the fluid-circulation means is an impeller which is located between the first and second open ends of the fluid-flow-passage. 
   
   
       7 ) The device of  claim 6 , wherein the impeller draws the heat-conducting fluid into its second open end and impels it through the first open end against the internal-surface of the heat-absorbing section. 
   
   
       8 ) The device of  claim 7 , wherein the impeller impels the heat-conducting fluid at a generally perpendicular orientation against the internal-surface of the heat-absorbing section. 
   
   
       9 ) The device of  claim 6 , wherein the impeller draws the heat-conducting fluid into its first open end and expels it through the second open end. 
   
   
       10 ) The device of  claim 6 , further comprising a rotating-movement generating device which has a rotating element which is rotationally-coupled to the impeller. 
   
   
       11 ) The device of  claim 10 , wherein the rotating-movement generating device is located outside the chamber and the rotational-coupling is effected by a shaft which is connected through the chamber-wall at its first end to the rotating element and at its second end to the impeller. 
   
   
       12 ) The device of  claim 10 , wherein the rotating-movement generating device is located outside the chamber and the rotating element and the impeller are magnets and the rotational-coupling is effected by a magnetic force connecting the rotating element to the impeller. 
   
   
       13 ) The device of  claim 12 , wherein the rotating element is an electromagnet. 
   
   
       14 ) The device of  claim 1 , wherein the external surface of the heat-dissipation section has heat-transfer fins. 
   
   
       15 ) The device of  claim 1 , wherein the internal surface of the heat-dissipation section is heat-transfer enhanced. 
   
   
       16 ) The device of  claim 1 , wherein the internal surface of the heat-dissipation section has heat-transfer fins. 
   
   
       17 ) The device of  claim 1 , wherein the internal surface of the heat-absorption section is heat-transfer enhanced. 
   
   
       18 ) The device of  claim 1 , wherein the internal surface of the heat-absorption section has heat-transfer fins. 
   
   
       19 ) The device of  claim 1 , wherein the heat-conducting fluid comprises water. 
   
   
       20 ) The device of  claim 1 , wherein the heat-conducting fluid comprises ethylene-glycol. 
   
   
       21 ) The device of  claim 6 , further comprising a rotating-magnetic field generating device which has a rotating magnetic field which is magnetically-coupled to the impeller. 
   
   
       22 ) The device of  claim 1 , wherein heat is transferred from the external surface of the heat-dissipation section to the external environment by natural convection. 
   
   
       23 ) The device of  claim 1 , wherein heat is transferred from the external surface of the heat-dissipation section to the external environment by forced convection. 
   
   
       24 ) The device of  claim 1 , wherein the heat-conducting fluid undergoes a thermodynamic phase-change. 
   
   
       25 ) The device of  claim 1 , wherein the heat-conducting fluid stays in the same thermodynamic phase 
   
   
       26 ) A device for removing heat from a hot-surface, the device comprising:
 a generally closed housing, the housing having a heat-absorbing section and a heat-dissipation section, the heat-absorbing section having an external surface in contact with the hot-surface and an internal surface, the heat-dissipation section having an external surface which is exposed to the external environment and an internal surface; and a heat-conducting fluid located within the housing, the heat-conducting fluid generally contacting both the internal surface of the heat-absorbing section and the internal surface of the heat-dissipation section.   
   
   
       27 ) A device for removing heat from a hot-surface, the device comprising:
 a generally closed liquid-filled chamber, a first external surface of which is in contact with the hot-surface to receive heat therefrom, a second external surface of which is exposed to the external environment to transfer heat thereto.