Long-acting heat pipe and corresponding manufacturing method
AssigneeChaun-Choung Technology Corp.
InventorsCheng-Tu WANG, Pang-Hung LIAO, Kuo-Feng TSENG, Wen-Tsai CHANG
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Abstract
A heat pipe includes a metal tube, a heat-absorption part, a capillary and working fluid. The metal tube has a chamber formed therein. A vapor channel and a liquid channel communicated with the vapor channel are formed in the chamber. The heat-absorption part is formed on the metal tube and corresponds to a portion of the vapor channel and the liquid channel. The capillary is arranged in the vapor channel and the liquid channel of the heat-absorption part. The working fluid is filled in the chamber.
Claims18
A long-acting heat pipe, comprising:
- a metal tube having a chamber formed therein, a vapor channel and a liquid channel communicated with the vapor channel being formed in the chamber;
- a heat-absorption part formed on the metal tube and corresponding to a portion of the vapor channel and the liquid channel;
- a capillary arranged in the vapor channel and the liquid channel of the heat-absorption part;
- and
- working fluid filled in the chamber.
A method for manufacturing a long-acting heat pipe, comprising:
- a) providing a metal tube having a vapor channel and a liquid channel communicated with the vapor channel therein;
- b) sealing an end of the metal tube by a welding device;
- c) inserting a mandrel into the vapor channel and forming a gap between an outer surface of the mandrel and the vapor channel;
- d) filling metal powder into the gap and the liquid channel;
- e) sintering the metal powder to form a capillary arranged in the vapor channel and the liquid channel;
- f) taking out the mandrel;
- and
- g) filling working fluid into the metal tube, and degassing and sealing the metal tube.
Dependencies are inferred from the claim text.