Delta’s High-efficiency Heat Transfer Solutions--Slim Heat Pipes and Slim Vapor Chambers
Slim heat pipes and slim vapor chambers are the latest in Delta’s high-efficiency heat transfer solutions. Developed for low profile laptops, tablets, and handheld devices, the slim heat pipes and vapor chambers transport large amounts of heat with very small temperature gradients. The pipes have a two-phase heat transfer system using pure, deionized water vapor for continuous and rapid heat transfer, making it the ideal solution for all the latest devices.
Working principle
Delta used grooves, sintered powder, fiber, mesh, and composite wick structures for different designs. As we know, the Geometry of the mandrel rod is the key to determining the wick geometry. Also for powder, size and shape will affect wick ability. Delta continues to integrate the material study and manufacturing capability.
Slim heat pipe (cross section)
For a slim Heat Pipe with a sintering powder wick structure, the minimum diameter of 5mm flattened to 0.6 mm could be manufactured. And by fiber and mesh wick structure, it can reach 0.4mm by flattening a diameter of 2mm. Delta is capability of designing and suggesting suitable wick structure for different application.
General design guidelines for ultra slim heat pipe: (bendable, thin, and customized shapes)
For a slim vapor chamber, Delta can apply a maximum dimension of 200mm x 200mm and a minimum thickness of 0.35mm. The VC surface flatness could be controlled within 0.2/100x100 mm2 by diffusion bonding. The surface ΔT should be controlled within 3oC. (Thermal conductivity: k ~ 6000 W/oC-m ).
General design guidelines for ultra slim vapor chamber: (thin and customized shapes)
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