Patent ID: 9021698
Filing Date: 2015-05-05
Classification: B21D,F28D,Y10T

Abstract:
1. A method for manufacturing a flat plate heat pipe, comprising steps of: providing a pipe having a continuously surrounding wall unit, the wall unit defining a chamber therein, the chamber being formed with a first through-hole and a second through-hole on both sides of the pipe; pressing the pipe for the first time to become a flattened pipe, the flattened pipe having an upper plate and a lower plate; preparing a sintered middle layer having a plurality of posts and a plurality of separate horizontal extending elements that are organized in a polygonal formation with a plurality of posts located separately at two opposite sides of the polygonal formation each separate post being connected to the polygonal formation by one horizontal extending element, disposing the sintered middle layer in the chamber to make both ends of the posts to face the upper plate and the lower plate respectively; pressing the flattened pipe for the second time to narrow a gap between the upper plate and the lower plate, thereby making the upper plate and the lower plate to abut against both ends of the posts respectively; providing a conduit having a first end exposed to the outside of the flattened pipe and a second end in communication with the chamber; sealing the first through-hole and the second through-hole of the flattened pipe to form a first sealing side and a second sealing side to thereby seal the chamber; connecting the conduit to the flattened pipe; evacuating air within the chamber through the conduit, and filling a working fluid into the chamber through the conduit; and sealing the first end of the conduit.