Thin heat pipe structure and manufacturing method thereof
A thin heat pipe structure and a manufacturing method thereof. The thin heat pipe structure includes a tubular body and a mesh body. The tubular body has a chamber and a working fluid. At least one first channel and at least one second channel are formed on an inner wall face of the chamber. The first and second channels extend to intersect each other. The mesh body is attached to the inner wall face of the chamber. The thin heat pipe structure is able to transfer heat in both axial direction and radial direction. By means of the manufacturing method, the heat pipe can be slimmed and the ratio of good products can be greatly increased.
1. A manufacturing method for a thin heat pipe structure, comprising steps of:
preparing a hollow tubular body and a mesh body, the tubular body having two open ends;
forming at least one first channel and at least one second channel on an inner wall face of each end of the tubular body, the first and second channels being formed only in positions adjacent to the two ends of the tubular body, the first and second channels extending to intersect each other;
attaching the mesh body to the inner wall face of the tubular body;
pressing the tubular body into a flat state;
vacuuming the tubular body and filling working fluid into the tubular body; and
sealing the two ends of the tubular body to form a first closed end as a front end and a second closed end as a rear end; wherein the first and second channels are formed only in the positions adjacent to the first closed end as the front end and the second closed end as the rear end, and no channels are formed on the inner wall face of the tubular body between the first and second channels formed adjacent to the first and second closed ends.
2. The manufacturing method for the thin heat pipe structure as claimed in claim 1 , further comprising a step of heat-treating the tubular body after the step of pressing the tubular body into the flat state, the tubular body and the mesh body disposed in the tubular body being heated by means of heat treatment after pressed into the flat state.
3. The manufacturing method for the thin heat pipe structure as claimed in claim 2 , wherein the heat treatment is diffusion bonding.
4. The manufacturing method for the thin heat pipe structure as claimed in claim 1 , wherein in the step of pressing the tubular body into the flat state, the tubular body is flattened by means of pressing.
5. The manufacturing method for the thin heat pipe structure as claimed in claim 1 , wherein in the step of forming at least one first channel and at least one second channel on the inner wall face of the tubular body, the first and second channels are formed by means of turning or milling.