Internal structure of vapor chamber

Abstract

An internal structure of vapor chamber is provided. A first plate has an inner surface. A periphery of the first plate has a sealing edge extending outwardly; a level difference exists between the first plate and the sealing edge. Multiple supporting protrusions are formed on the inner surface of the first plate. A second plate has an inner surface spaced apart from the inner surface of the first plate. The brazing structure has a sealing portion and connecting portions, the sealing portion is fixed between the second plate and the sealing edges of the first plate, and the connecting portions are respectively disposed between the corresponding supporting portions of the first plate and of the second plate. The sealing portion is disposed around a periphery of the second plate to align and contact with the sealing edge.

What is claimed is: 
     
         1 . An internal structure of vapor chamber, comprising:
 a first plate having an outer surface, an inner surface, a sealing edge extending outwardly at a periphery of the first plate, a level difference being formed between the first plate and the sealing edge, and a plurality of first supporting protrusions being formed on the inner surface of the first plate;   a capillary layer disposed on the inner surface of the first plate;   a second plate having an outer surface and an inner surface, the inner surface of the second plate being spaced apart from the inner surface of the first plate, and the second plate covering the first plate to define a chamber, and a plurality of second supporting protrusions being formed on the inner surface of the second plate, and a plurality of reliefs formed on the inner surface of the second plate and a steam channel being enclosed between two reliefs; and   a brazing structure having a sealing portion and a plurality of connecting portions, formed by a filler via a brazing process, the sealing portion being fixed between the second plate and the sealing edge of the first plate, and the connecting portions being respectively disposed between the first supporting protrusions of the first plate and the second supporting protrusions of the second plate;   wherein the sealing portion is disposed around a periphery of the second plate to align and contact with the sealing edge of the first plate;   wherein at least one spilling groove is recessed into the first supporting protrusions of the first plate or at least one spilling groove is recessed into the second supporting protrusions of the second plate so that the filler is allowed to flow into the recessed spilling groove to prevent from spillover onto the capillary layer or into the vapor flow channel during the brazing process.   
     
     
         2 . The internal structure of the vapor chamber according to  claim 1 , wherein the vapor chamber has a thickness ranged from 0.1 to 0.8 mm. 
     
     
         3 . The internal structure of the vapor chamber according to  claim 1 , wherein the first plate and second plate are respectively made of copper, titanium, or stainless steel. 
     
     
         4 . The internal structure of the vapor chamber according to  claim 1 , wherein the first plate and the second plate have a thickness ranged from 0.02 to 0.2 mm. 
     
     
         5 . The internal structure of the vapor chamber according to  claim 1 , wherein a plurality of through holes are defined on the capillary layer corresponding to the first supporting protrusions of the first plate, the first supporting protrusions are inserted though the respective through holes, and the capillary layer is thereby attached on the inner surface of the first plate. 
     
     
         6 . The internal structure of the vapor chamber according to  claim 1 , wherein the first supporting protrusions of the first plate and the second supporting protrusions of the second plate are cylindrical, square or rectangular columns. 
     
     
         7 . The internal structure of the vapor chamber according to  claim 1 , wherein the at least one spilling groove has a cross section of a curve shape, a V shape or an inverted V shape. 
     
     
         8 . The internal structure of the vapor chamber according to  claim 1 , wherein a plurality of spilling grooves is recessed into the first supporting protrusions of the first plate and the second supporting protrusions of the second plate. 
     
     
         9 . The internal structure of the vapor chamber according to  claim 8 , wherein each spilling groove has a cross section of a curve shape, a V shape or an inverted V shape. 
     
     
         10 . The internal structure of the vapor chamber according to  claim 1 , wherein the sealing portion and the connecting portions are identical in thickness. 
     
     
         11 . An internal structure of vapor chamber, comprising:
 a first plate having an outer surface, an inner surface, a sealing edge extending outwardly at a periphery of the first plate, a level difference being formed between the first plate and the sealing edge, and a plurality of first supporting protrusions being formed on the inner surface of the first plate;   a capillary layer disposed on the inner surface of the first plate;   a second plate having an outer surface and an inner surface, the inner surface of the second plate being spaced apart from the inner surface of the first plate, and the second plate covering the first plate to define a chamber, and a plurality of second supporting protrusions being formed on the inner surface of the second plate; and   a brazing structure, which has a sealing portion and a plurality of connecting portions identical in thickness, formed by a filler via a brazing process, the sealing portion being fixed between the second plate and the sealing edge of the first plate, and the connecting portions being respectively disposed between the first supporting protrusions of the first plate and the second supporting protrusions of the second plate;   wherein the first supporting protrusions of the first plate have a contour larger than the second supporting portions of the second plate, and the connecting portions are not entirely formed on the first supporting protrusions, or   the first supporting protrusions of the first plate has a contour smaller than the second supporting portions of the second plate, and the connecting portions are not entirely formed on the second supporting portions,   wherein the sealing portion is disposed around a periphery of the second plate to align and contact with the sealing edge of the first plate;   thereby, an acceptable range of tolerance of aligning is increased, and the filler of the connecting portions is thereby prevented from spillover onto the capillary layer or into the vapor flow channel during the brazing process.