Patent ID: 7467465

Claim:
A flexible production process for fabricating heat pipes, comprising: (a) performing pre-process on tubular materials for making heat pipes; (b) performing annealing process on the tubular materials; (c) filling working fluid in the tubular materials; (d) removing non-condensable gas from the tubular materials; and (e) sealing openings of the tubular materials; wherein the tubular materials are disposed in a laminar box when the process is interrupted between steps of (a) and (b), (b) and (c), or (c) and (d) and the laminar box includes a hollow chamber, a platform disposed in the chamber for the tubular materials disposed thereon, a gas supply installed on top of laminar box to provide protection gas to protect the tubular materials, a plurality of flow diffluent devices installed at the top of the chamber to connect the gas supply to deliver the gas to a first fairing device and direct the gas flowing vertically downward in the chamber, a partitioning board with a plurality of through holes located under the platform allowing the gas to flow through, and a second fairing device to exhaust the gas carrying impurity out of the chamber, such that the tubular materials are preserved in a clean air environment.