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Vapor Chamber
Introduction to the structure of the vapor chamber
A vapor chamber is a vacuum chamber with microstructured walls. When heat is transferred from the heat source to the evaporation zone, the working fluid inside the chamber will begin to vaporize in the liquid phase in a low vacuum environment. At this point, the working fluid absorbs heat and expands rapidly, and the working substance in the vapor phase quickly fills the chamber. When the vapor phase working fluid comes into contact with a colder area, condensation occurs. The heat accumulated during evaporation is released through the phenomenon of condensation and the condensed liquid phase working fluid is returned to the evaporative heat source by capillary phenomena in the microstructure. The process is repeated in the chamber and this is how the vapor chamber operates.
The vapor chamber operates independently of gravity because of the capillary forces generated by the microstructure during the evaporation of the working fluid. The theory of a vapor chamber is the same as that of a heat pipe, except that it goes from the one-dimensional heat conduction of a heat pipe to the two-dimensional heat conduction of a vapor chamber, so in theory the heat conduction capacity of a vapor chamber is much greater than that of a heat pipe.