| 摘要 |
PURPOSE:To enable a setting of heat storage unit at an elevated position and to obviate a waterless firing in a heating unit by a method wherein an expansion and retracting chamber to which a water pressure in the city water supply is communicated with a thermal heating medium circulation circuit through a hot water storage tank. CONSTITUTION:To the bottom part of a hot water storage tank 9 is connected a city water pipe 13 and to the upper surface of the tank is connected a hot water supplying pipe 14. An expansion and retracting chamber divided by a resilient film 15 is arranged at the upper end part in the hot water storage tank 9, and the expansion and retracting chamber 16 is communicated with the circulation circuit 11 through a communication pipe 17. The expansion and retracting chamber 16 may act also as a catalyst supplying tank and has a catalyst supplying port 17. Due to its closed circulation type, it is possible to install the heat collector 8 at an elevated position and since the city water pressure is applied to the circulation circuit 11 through a resilient film 15 in the expansion and retracting chamber 16, the drop of pressure in the circulation circuit 11 is prevented, the waterless heating in the container can also be prevented, resulting in providing a high efficiency of heat collection. Utilization of city water pressure enables the pressurizing device to be eliminated and a simple structure to be provided. |
