| 摘要 |
PURPOSE:To provide the titled collector having high heat collecting efficiency in a comparatively simple construction by forming a heat collecting plate in a cross-shape in section. CONSTITUTION:A cross-shaped plate 6 is formed by an aluminum plate which is bent and worked so that its section is formed by four curved parts 7, and both end parts 8 are connected to each other by caulking or the like. Therefore, parts encircled by four curved parts become excellent clamping parts into which an inner pipe 2 is inserted, and the heat collecting part can be constructed extremely simply. Further, according to this heat collecting plate 6, four junctions with the inner pipe 2 indicated by arrow C are heat transfer parts from the heat collecting plate to the inner pipe. Therefore, the heat transfer property is remarkably improved. Furthermore, since the fin parts 9 of the heat collecting plate interrupts incident light (d) which has heretofore escaped to the outside, the incident light (d) radiated by the collector is collected at the heat collecting part without loss. Further, the width of the heat collecting part 6 is selected to be slightly shorter than the inner diameter of the outer pipe by taking into consideration of the damage of the outer pipe 1 due to thermal expansion. |
