| 摘要 |
PURPOSE:To enable to individually perform the natural circulation of water in such a manner that the water in a hot water storage tank entering each heat collecting pipe as cold water leaves the pipe as hot water to return to the tank with a little passage resistance by a structure wherein the opening sides of a plurality of the heat collecting pipes with an opening at one end respectively are inserted from the junction ports equipped on the underside of the hot water storage tank into the tank for joining each pipe with the tank. CONSTITUTION:The hot water storage tank 9 equipped with a plurality of the junction ports 10 on the underside of the tank 9 and a plurality of the heat collecting pipes 12 with the opening 13 at one end respectively are provided so that the opening 13 side of each heat collecting pipe 12 is inserted from each junction port 10 into the tank 9 for joining each pipe 12 with the tank 9. Accordingly, when the solar heat is given to the pipe 12, the water in the pipe 12 is heated and flows upward in order to accumulate through the opening 13 in the upper portion of the inner space of the tank 9. On the other hand, the cold water in the bottom portion of the inner space of the tank 9 flows from the influx hole 14 of the pipe 12 equipped near the bottom portion of the tank 9 into the pipe 12 and is guided by a guide plate 15. Owing to the structure as described above, the water in the tank 9 circulates itself so that the hot water successively accumulates in the upper portion of the inner space of the tank 9. In other words, the natural circulation can be performed with a little passage resistance due to the tubular structure of the heat collecting pipe. |
