Liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device

Abstract

A liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device that includes a housing with a chamber connected to an inlet and outlet; a capillary structure in the chamber for maintaining a predetermined distance from the inlet and outlet, and separating the chamber into an liquid inlet chamber and a vapor outlet chamber. The liquid inlet chamber is spatially connected to the inlet, and the vapor outlet chamber is spatially connected to the outlet. A drainage structure located at the top surface of the bottom of the housing is affixed to the bottom of the capillary structure for diverting liquid from the liquid inlet chamber to the underside of the capillary structure. The bottom surface of the bottom of the housing is affixed to a heat source, and when the heat source is attached, the drainage structure is located above the heat source.

What is claimed is: 
     
         1 . A liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device, comprising:
 a housing having (a) a top, a bottom and a plurality of side walls, (b) a chamber inside the housing, and (c) an inlet and an outlet spatially connected to the chamber, respectively;   a capillary structure affixed to the top, bottom and side walls of the housing, thereby occupying a substantial portion of the space in the chamber, the capillary structure in the chamber maintaining a predetermined distance from both the inlet and the outlet, thereby spatially separating the chamber into a liquid inlet chamber, which is spatially connected to the inlet, and the vapor outlet chamber, which is spatially connected to the outlet; and   a drainage structure disposed on a top surface of the bottom of the housing, and affixed to the bottom of the capillary structure, the drainage structure being partially uncovered by the capillary structure and exposed to the liquid inlet chamber, the drainage structure being used to divert liquid from the liquid inlet chamber to the bottom of the capillary structure,   wherein a bottom surface of the bottom of the housing is affixed to a heat source, and the drainage structure is located above the heat source.   
     
     
         2 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the housing is of a rectangular shape, and the number of the sidewalls is four, and wherein the four sidewalls are opposite to each other, and the capillary structure is attached to two of the opposite sidewalls, and separated from the other two sidewalls by a predetermined distance. 
     
     
         3 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the housing is one of a square, polygon, circular, or cylindrical shape. 
     
     
         4 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the inlet and the outlet are installed at the top of the housing. 
     
     
         5 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the inlet is pierced through one of the side walls of the housing. 
     
     
         6 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the capillary structure is a copper powder sintering structure having at least two different sizes in diameter, and wherein the large diameter copper powder is located at the bottom of the capillary structure in contact with the induced flow structure, and the small diameter copper powder is a main component of the capillary structure, and the small diameter copper powder is located above the aforementioned large diameter copper powder. 
     
     
         7 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the induced flow structure is composed of a plurality of grooves, and the two ends of the grooves are connected to the liquid-in chamber and the vapor-out chamber respectively. 
     
     
         8 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the drainage structure is a metal woven mesh, the capillary structure is a copper powder sintered structure, and the mesh of the metal woven mesh is larger than the copper powder particle size of the capillary structure. 
     
     
         9 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the inlet is equipped with a check valve. 
     
     
         10 . The liquid-in and vapor-out composite liquid-vapor phase conversion heat dissipation device according to  claim 1 , wherein the housing has an inlet pipe extending outward to the inlet, and an outlet pipe extending outward to the outlet.