Liquid-gas circulation heat-dissipating unit

Abstract

A liquid-gas circulation heat-dissipating unit includes a body having a hollow portion, a capillary structure evenly coated on an inner wall of the hollow portion and configured to soak up working fluid, and a regulating portion disposed in the body and communicating with the hollow portion. The hollow portion is filled with the working fluid of an amount more than a greatest possible amount adsorbed on the capillary structure. The regulating portion is stored with an excess of the working fluid. As a result, quantity tolerance between the working fluid of the greatest possible amount adsorbed on the capillary structure and the actually introduced working fluid increases. Accordingly, the capillary structure is adsorbed with the greatest possible amount of the working fluid and thus achieves optimal efficiency of heat dissipation.

1 . A liquid-gas circulation heat-dissipating unit, comprising:
 a body comprising a hollow portion;   a capillary structure evenly coated on an inner wall of the hollow portion and adsorbed with working fluid; and   a regulating portion disposed in the body and communicating with the hollow portion, wherein the hollow portion is filled with the working fluid of an amount more than a greatest possible amount adsorbed on the capillary structure, and the regulating portion is stored with an excess of the working fluid.   
   
   
       2 . The liquid-gas circulation heat-dissipating unit of  claim 1 , wherein the body is panel-shaped. 
   
   
       3 . The liquid-gas circulation heat-dissipating unit of  claim 1 , wherein the body is made of metal. 
   
   
       4 . The liquid-gas circulation heat-dissipating unit of  claim 1 , wherein the regulating portion is a groove disposed in the bottom of the hollow portion. 
   
   
       5 . The liquid-gas circulation heat-dissipating unit of  claim 4 , wherein the groove is peripherally disposed in the bottom of the hollow portion and thereby is ring-shaped. 
   
   
       6 . The liquid-gas circulation heat-dissipating unit of  claim 4 , wherein the groove is cruciform. 
   
   
       7 . The liquid-gas circulation heat-dissipating unit of  claim 4 , wherein the groove is round. 
   
   
       8 . The liquid-gas circulation heat-dissipating unit of  claim 1 , wherein the capillary structure is a metal powder sintered structure. 
   
   
       9 . The liquid-gas circulation heat-dissipating unit of  claim 1 , wherein the excess of the working fluid has volume less than a capacity of the regulating portion.