| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a solar heat water-heater, preventing the deterioration of heat collecting efficiency of a heat collecting pipe even when a hot-water storage tank is expanded or contracted, preventing the damage of the heat collecting pipe by absorbing a shock even when vibration or shock is applied thereon and facilitated in the manufacture thereof without demanding high accuracy in the inner diameter of connecting tube of the hot-water storage tank, the dimensional allowance of the outer diameter or the degree of roundness of the heat collecting pipe. SOLUTION: In a solar heat collecting water heater, the base ends of heat collecting pipes 3, whose base ends are opened and whose terminal ends are closed, are connected to and communicated with a plurality of connecting tubes 2, provided in parallel to a hot-water storage tank 1. In this case, one end of a coupling ring 6, consisting of an elastic material such as rubber, synthetic resin and the like and having projected or recessed annular shock absorbing unit 7 formed at the center thereof, is fitted into and fixed to the outer periphery of the connecting tube unit 2 of the hot-water storage tank 1 while the other end of the same is fitted into and fixed to the outer periphery of base end of the heat collecting pipe 3 under the condition of liquid sealing. Further, a heat collecting pipe supporting unit 12, supporting and positioning the heat collecting pipe 3, is also provided in this case.</p> |
