| 摘要 |
PURPOSE:To simplify the introduction of water and effectuate mixing at a constant ratio, by connecting an additive delivery pipe and a water delivery pipe to the water introduction port of a radiator through a coupling head and by controlling the flow rates of the water and the additive depending on the concentration of the additive and by making their delivery durations almost the same. CONSTITUTION:A water tank 1 and an additive tank 2 are connected to the outlet port 8 of a coupling head 4 through delivery pipes 5, 6 fitted with feed pumps 21, 23. The water delivery pipe 5 is provided with orifices 30a, 30b in parallel. The additive delivery pipe 6 is provided with orifices 33a-33e in parallel. The pipes 5, 6 are switched to the orifices by solenoid valves 22a, 22b, 32a-32e, 33a-33e, etc. so that flow rates are selected. A controller 29, which receives the detected values of level gauges 25-28 placed in the water tank 1 and the additive tank 2, chooses optimal orifices depending on the concentration of the additive to make the delivery durations of the water and the additive almost the same. |
