| 摘要 |
PURPOSE:To extract a liquid speedily and securely, by a method wherein a circulating liquid pressurized by a circulating pump is directed to an ejecting pump, is jetted out through a nozzle, and a liquid contained in a heat collector or the like is drawn out by sucking by a negative pressure generated at the time of jetting. CONSTITUTION:When collecting heat, the circulating liquid 30 contained in a heat-accumulating tank 11 is fed into each heat collector 13 through a forward pipe 14, a three-way valve 15 and a forward pipe 14a by the circulating pump 12, and after being heated by solar heat at the heat collector 13, it is returned to the tank 11 through a return pipe 20. On the other hand, when extracting the liquid, the valve 15 is so operated that connecting ports 15a snd 15c are communicated to each other while a port 15b is closed, and the liquid pressurized by the pump 12 is directed from the pipe 14 to the ejecting pump 23 through a pipe 26. In addition, a two-way valve 25 is also opened, the liquid contained in the heat collectors 13 and the pipe is drawn out through an intake pipe 24 by the negative pressure generated at a peripheral part 33 of the nozzle 31 of the pump 23, and is recovered into the heat-accumulating tank 11. |
