| 摘要 |
A heat pipe in accordance with the present invention includes an outer pipe and an inner pipe which is inserted to the outer pipe, coolant return routes with relatively large cross-sectional area are provided on the inner side of the outer pipe from the evaporation section to the condensation section, grooves with relatively small cross-sectional area are provided on the inner surface of the inner pipe from the evaporation section to the condensation section, and connective openings are provided on the inner pipe for connecting through the grooves to the coolant return routes. |
