| 摘要 |
PURPOSE:To provide an electrical insulation type heat pipe in which pure water or approximate pure water acting as working liquid can be used and both a reduction of thermal conduction and an increased inner pressure of the container can be reaolved by a method wherein the working liquid is flowed into the space of the thermal insulation part in a direction substantially perpendicular to the circulating direction of the working liquid and a continuous passage is not formed and further the groove or projection having no accumulation of working liquid is formed. CONSTITUTION:A groove 9 in recess section is formed along the inner circumference on the inner wall surface of the insulation material 5 at the thermal insulation part (b), and this recess groove 9 is formed acress the flow passage of the working liquid 8 circulating on the inner wall surface toward the heat receiving part (c) from the radiation part (a) when the heat pipe is operated. It is an essential condition that as the recess groove 9, the circulation working liquid is flowed into the groove and the continuous flow passage is not formed and it is also an essential condition that the working liquid is accumulated in the groove and then is not filled in the groove. With this arrangement, even if the working liquid 8 is varied to the electrical conductive liquid, the feature of continuity of liquid is lost ue to dripping of water when the liquid is passed through the concave groove 9 and a completer electrical insulation is assured between the heat receiving part (c) and the radiation part (a) with the help of the insulation material 5. |
