| 摘要 |
PURPOSE:To obtain the self-completion type heat collecting device by a method wherein a heat pump is used as a means for collecting solar heat and a heat medium is flowed directly through a heat collector so that the heat collecting efficiency is improved, while the heat collector can be miniaturized and light in weight and the amount of heat collection is increased. CONSTITUTION:The heat medium gas compressed by a compressor 2 enters a condenser 4 and condenses to become liquefied by releasing heat to hot water flowing through a water heater 9. The condensed and liquefied heat medium then passes an expansion valve 5 so that it comes to have a low temperature and a pressure equal to the atmospheric pressure, enters a heat collecting panel 1 and vaporizes to become gassified by absorbing solar heat or the heat of the open air. In case where no water is supplied to the water heater 9 due to a failure of a water circulation pump 8, a pressure switch 21 mounted on a discharge pipe of the compressor 2 operates so that the contact of the switch is opened to stop the heat collecting operation of the heat collector. Further, in case where an evaporation temperature sensor 19 is at a temperature lower than a set temperature value and a hot water temperature sensor 20 of a hot water storage tank 7 is at the set temperature or an insolation sensor 18 shows a brightness lower than a set value, each of the contacts of the sensors is opened to thereby stop the heat collecting operation. |
