| 摘要 |
PURPOSE:To obtain a heat collecting apparatus, which performs efficient heat collection, by providing a check valve in an outgoing pipe between a heat collector and a heat exchanger, and starting and stopping a circulating pump based on the temperature difference between the input part of the heat exchanger and a heat storage tank. CONSTITUTION:A check valve, which prevents the reverse flow of a heat medium A from a heat collector 1 to a circulating pump, is provided in an outgoing pipe 5 between the heat collector 1 and a heat exchanger 7. A high temperature sensor 16 is provided at an input part 7b of the heat exchanger. A low temperature sensor 12 is provided at the lower part of a heat storing tank 2. The difference between the detected temperatures of the sensors 12 and 16 is compared with a preset value. In this way, the start and stop of the pump 8 are controlled. Therefore, when the pump 8 is stopped, the heat collector 1 is always filled with the heat medium A, and efficient heat collection is performed. Since the high temperature sensor is incorporated in the heat storing tank, wiring work can be simplified. |
