Capillary structure of heat plate

Abstract

A heat plate includes two boards, which mate and are coupled to each other to define therebetween an accommodation chamber and a capillary structure of at least one first capillary layer and at least one second capillary layer arranged in the accommodation chamber in such a way that the first and second capillary layers are stacked over each other. With the arrangement of the first and second capillary layers, the efficiency of diffusion of vapor of a working fluid is increased and the uniformity of distribution of the working fluid is enhanced, so that the efficiency of temperature reduction is improved.

1 . A heat plate, comprising:
 two boards, which are coupled to each other to form an accommodation chamber therebetween;   at least one first capillary layer, which is received in the accommodation chamber; and   at least one second capillary layer, which is received in the accommodation chamber, the first and the capillary layers being stacked over each other.   
     
     
         2 . The heat plate as claimed in  claim 1 , wherein the first capillary layer has a thickness that is greater than a thickness of the second capillary layer. 
     
     
         3 . The heat plate as claimed in  claim 1  or  2 , wherein the first and second capillary layers comprise metal nets, the first capillary layer having a mesh smaller than a mesh of the second capillary layer. 
     
     
         4 . The heat plate as claimed in  claim 1 , wherein the second capillary layer is stacked under the first capillary layer. 
     
     
         5 . The heat plate as claimed in  claim 1 , wherein two capillary layers are respectively stacked on and under top and bottom surfaces of the first capillary layer. 
     
     
         6 . The heat plate as claimed in  claim 1 , wherein the first capillary layer has a periphery forming a cutoff. 
     
     
         7 . The heat plate as claimed in  claim 1  or  6 , wherein the second capillary layer has a periphery forming a cutoff. 
     
     
         8 . The heat plate as claimed in  claim 1 , wherein at least one of the two boards forms a recess. 
     
     
         9 . The heat plate as claimed in  claim 1 , wherein the stacked first and second capillary layers has an overall thickness that is substantially identical to a depth of the accommodation chamber. 
     
     
         10 . The heat plate as claimed in  claim 1 , wherein the second capillary layer is formed of sintered powders.