HEAT PIPE MANUFACTURING METHOD AND HEAT PIPE THEREOF
A heat pipe includes a step pipe, a mesh, and a supporting component. The step pipe has an evaporating section and two condensing sections. The condensing sections are on the two ends of the step pipe, respectively. The evaporating section lies between the two condensing sections. The inner spaces of the two condensing sections and the evaporating section are interconnected. The peripheral dimension of the evaporating section is larger than the peripheral dimension of each of the condensing sections. The mesh is contained in the step pipe and located inside the evaporating section. The supporting component is contained in the step pipe and wrapped in the mesh. The combination of these structures increases air's flow rate inside the heat pipe and improves the heat pipe's heat conduction efficiency.
1 . A method of manufacturing a heat pipe, comprising:
a) providing a hollow pipe, a mesh, and a supporting component, wrapping the supporting component with the mesh and then inserting the supporting component and the mesh into the hollow pipe;
b) inserting an insertion rod into the step pipe and letting the insertion rod contact the supporting component; and
c) after step b) shrinking a part of the hollow pipe and the insertion rod so as to convert the hollow pipe into a step pipe having varying peripheral dimensions.
2 . The method of claim 1 , further comprising a step d) of filling a metal powder into a space between the insertion rod and the step pipe.
3 . The method of claim 2 , further comprising a step e) of sintering the step pipe and the insertion rod so as to form a sintered powder structure on an inner wall of the step pipe after step d).
4 . The method of claim 3 , further comprising a step f) of sealing the step pipe, filling in a working fluid, and degassing the step pipe after step e).
5 . The method of claim 4 , further comprising a step g) of flatting the step pipe after step f).
6 . A heat pipe, comprising:
a step pipe, having a evaporating section and two condensing sections, wherein the two condensing sections are formed on two ends of the step pipe, respectively, the evaporating section lies between the two condensing sections, inner spaces of the two condensing sections and the evaporating section are interconnected, and a peripheral dimension of the evaporating section is larger than a peripheral dimension of each of the condensing sections.
a mesh, contained in the step pipe and located inside the evaporating section; and
a supporting component, contained in the step pipe and wrapped in the mesh.
7 . The heat pipe of claim 6 , wherein the heat pipe is a straight step pipe with round traverse sections.
8 . The heat pipe of claim 6 , wherein the heat pipe is a straight step pipe with flat traverse sections.
9 . The heat pipe of claim 6 , wherein the evaporating section is round, semicircular, or flat.
10 . The heat pipe of claim 9 , wherein the condensing sections are round or flat.
11 . The heat pipe of claim 6 , wherein the supporting component is a helical spring.
12 . The heat pipe of claim 6 , further comprising a sintered powder structure, the sintered powder structure being formed inside either or both of the condensing sections.
13 . The heat pipe of claim 12 , further comprising a working fluid, the working fluid being filled inside the step pipe.