JPS62150591U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing an embodiment of the present invention;
Figure 3 is a circuit diagram of the auxiliary control unit in the same example, Figure 3 is an explanatory diagram of the operation of the same example, Figure 4 is a diagram illustrating the time distribution of water supply ratio in an apartment complex, and Figure 5 is a diagram showing the water supply rate from the pump. FIG. 6 is a diagram illustrating the relationship between the amount of water and chromaticity, FIG. 6 is a diagram illustrating how the chromaticity of water changes within the pump, and FIG. 7 is an explanatory diagram of the operation of a conventional example. 3, 4...Pump, 12...Main control section, 13...Common discharge pipe, 15...Drain pipe, 16...Solenoid control valve, 18
...Auxiliary control section, 21, 22...Timed switching element.

Claims (1)

[Scope of utility model registration request] In a water supply device provided with an auxiliary control unit capable of controlling the opening and closing of a drainage on-off valve connected to a common discharge pipe of a plurality of pumps, which are controlled to start and stop in a predetermined order, during a predetermined time period, the auxiliary control unit A water supply device comprising: a timed opening/closing element for repeatedly controlling opening/closing of the opening/closing valve a plurality of times during the aforementioned time period.