公开(公告)号：US10264707B2

公开(公告)日：2019-04-16

申请号：US15518814

申请日：2015-05-22

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sung Jin Kim ,  Gi Hwan Kwon

IPC: H05K7/20 ,  F28D15/02 ,  F28D15/04 ,  F28F13/10 ,  H01L23/427

Abstract: Disclosed is a flat plate pulsating heat pipe (FP-PHP) serving as a power-free high efficiency heat transfer system for small electronic devices such as mobile phones and laptop computers. The FP-PHP is manufactured using MEMS technology and configured to have a single-turn loop or a multi-turn loop, each having a single diameter channel or a dual diameter channel. Further, since a working fluid used in a flat plate pulsating heat pipe exhibits different characteristics according to the main working temperature, provided is a flat plate pulsating heat pipe which includes a working fluid having optimum efficiency in the main working temperature. In addition, the flat plate pulsating heat pipe applicable at various installation angles, of the present invention which is for achieving the above purpose, includes: a silicon lower wafer plate having a rectangular shape; a capillary tube comprising a channel which has a constant depth on the upper surface of the silicon wafer lower plate and is formed in the form of a straight line along the longitudinal direction of the silicon wafer lower plate, wherein the channel forms a closed loop which is bent at both ends of the silicon wafer lower plate and is connected; a wafer upper plate which is coupled on top of the silicon wafer lower plate and seals the capillary tube; and a working fluid filled inside the capillary tube, wherein the capillary tube is made of a combination of a dual-diameter tube including a pair of channels having different widths and a single diameter tube including a pair of channels having the same width.