While everything that uses power need to be cooled, some applications require specific thermal management solutions which are adapted for their unique space restrictions, ambient conditions, or specific efficiencies. For devices where space is no issue, often heat pipes in combinations with heatsinks and fans are preferred, but for devices where a thin profile needs to be maintained, such as smartphones or laptop, vapor chambers are often the best solution.
VAPOR CHAMBER, MORE THAN JUST A FLAT HEAT PIPE
A vapor chamber’s working principle is the same as the one of a heat pipe. A liquid held at high pressure in a vacuum chamber absorbs the heat, rises at the top of the chamber in the form of vapor, is then cooled and turns into condensation which is brought back down via a capillary structure on the walls of the chamber. Natural convection makes the cycle repeat and the heat source is thus kept under ideal working conditions.
THE STRUCTURE OF A VAPOR CHAMBER
The top and bottom cover plates are welded together to create a complete seal of the chamber. After assembly, the chamber is left with a small tube to perform the vacuum of the chamber and fill the liquid, once done it is then removed and sealed shut permanently.
The pillars provide the wide chamber with structure integrity while also providing more surface for the capillary action to happen.
A capillary structure is applied on the inside wall for absorption of the cooled down liquid condensation and help redirect the liquid back to the heat source. The capillary structure also ensures the natural convection defies gravity regardless of the orientation of the device.
TYPES OF VAPOR CHAMBER WE PROVIDE
APPLICATIONS FOR VAPOR CHAMBER