Patent ID: 9533385
Date: 2017-01-03
CPC Classifications: B23P,F28D,Y10T

Claim:
1. A method of manufacturing a flat heat pipe comprising: providing a circular hollow pipe and a T-shaped like wick, wherein the T-shaped like wick has a fan-shaped portion and a protruding portion protruding from the fan-shaped portion; inserting the T-shaped like wick into the circular hollow pipe such that the fan-shaped portion abuts against an inner wall of the circular hollow pipe and a segment difference space is formed between the protruding portion and the inner wall of the circular hollow pipe; forming a capillary structure in the segment difference space, wherein the capillary structure has a central portion and two edge portions and a thickness of the central portion is smaller than a thickness of each of the two edge portions; drawing the T-shaped like wick out of the circular hollow pipe; and compressing the circular hollow pipe so as to form a flat hollow pipe; wherein after compressing the circular hollow pipe so as to form the flat hollow pipe, the flat hollow pipe has a first flat portion, a second flat portion and two arc portions, the two arc portions are connected to both sides of the first and second flat portions, the central portion is located on an inner wall of the first flat portion, the two edge portions are located on inner walls of the two arc portions respectively, and at least one of the two edge portions abuts against an inner wall of the second flat portion.