JPH01268926A - Water supply for building - Google Patents

Abstract

PURPOSE:To remove red water in a water supply tube by a method in which a water-receiving tank is connected through a water control valve and a connecting valve to the lower part of a water supply tube, and water in the water supply tube is allowed to flow into the water-receiving tank only for a given time period at a given time. CONSTITUTION:A timer setter is set up in such a way as to secure a 15-minute operation from 5 to 5:15 o'clock in the morning, for example. In the daytime, water flows out of a water supply cock 5, water in a high-level water tank 4 is reduced, and when the lowering of water level to below a given value is detected by a float sensor 13, a pump 2 is operated to supply water for the shortage. In night, water stays in a water supply tube 6, and at 5 o'clock in the morning, a setter is operated. The contact is closed to excite an electromagnetic coil, and a water control valve 14 is opened to allow water in the tube 6 to flow through a control valve 14 and a connector 15 into a water-receiving tank 1. At 5:15 o'clock, the setter is restored and the contact is opened, and the coil is magnetically erased. The control valve 14 is closed to stop the flow of water.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water supply system for high-rise buildings such as buildings, and particularly to a device for preventing red water from flowing from a faucet in the early morning hours.

[Conventional technology]

The conventional water supply system for buildings or condominiums is to connect a water tank on the ground with an elevated water tank on the roof of the building using a risepipe, and then use a pump to pump water from the water tank to the elevated water tank via the risepipe. It is supplied to each floor using the head from the high water tank.

By the way, since there is less water usage at night, the water supply becomes stagnant, and if the pipes are used for many years, red rust will form on the water pipes that use iron, and in the early morning, red water from the rust will come out from the water taps. Sometimes.

Therefore, for example, as disclosed in Japanese Patent Application Laid-open No. 61-216943, the lower end of the water supply pipe is connected to the water receiving tank via a water control valve and a connecting pipe to form a circulation pipe, and the middle of the connecting pipe is A system has been proposed in which a sterilizer and a filter are installed in the tank, and a pump is constantly driven to circulate the water, thereby purifying the water and preventing the generation of red water.

[Problem to be solved by the invention]

By the way, since the above water supply system constantly circulates water,
The pump must be operated continuously.

Therefore, there was a problem that a large amount of electric power was required.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides a water supply system that does not produce red water and uses less electricity.

[Means to solve the problem]

This purpose is achieved by allowing the water in the water supply pipe to flow into the water tank at a predetermined time, for example, for a predetermined time in the early morning, since red water mostly occurs only in the water that comes out of the faucet for a short time in the early morning.

[Effect]

Even if the water in the water supply pipes stagnates at night and red water occurs, in the early morning the water in the water supply pipes flows into the water tank via the water control valve and connecting pipe, so red water does not occur when the system is used. There is.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Figure 1 shows the configuration of the entire water supply system. In Figure 0, it consists of a water tank 1, a pump 2, a riser pipe 3, an elevated water tank 4, and a water supply pipe 6 with branched water taps 5 on each floor. The water receiving tank 1 is equipped with a float sensor 7, connected to a tap water supply pipe 9 having a water supply valve 8 controlled by the float sensor 7, and connected to an overflow pipe 10, a water distribution pipe 11, and a drain valve. attached via 12. Elevated water tank 4
A float sensor 13 is installed inside, and the float sensor 13 detects the change in the elevated water tank 4, and the pump 2 is operated to supply insufficient water to the elevated water tank 4.

The lower part of the water supply pipe is connected to the water receiving tank 1 via a water control valve 14 and a connecting pipe 15, forming a circulation pipe.

Figure 2 shows an electrical circuit diagram for controlling the water control valve 14. In Figure 0, P and N are DC power supply terminals, and T
is a time setting device using a clock mechanism, and is configured such that a contact Ta closes for a predetermined time at a predetermined time. 2 is an electromagnetic coil for controlling the water control valve 14. When the contact Ta closes and the electromagnetic coil V is energized, the water control valve 14 is opened and water flows from the water supply pipe 6 to the water control valve 14. It is configured to flow into the water receiving tank 1 through the connecting pipe 15.

Next, the present invention will be explained in detail.

Now, I set the time setter T to 15:00 from 5:00 in the morning to 5:15.
Set it to run for minutes.

During the day, water flows from the hydrant 5 and the water in the elevated water tank 4 decreases.
When the float sensor 13 detects that the water level has fallen below a predetermined value, the pump 2 is driven to supply insufficient water. At night, water is hardly used, so water stagnates in the water supply pipe 6, making it easy for red water to occur. At 5 o'clock in the morning, the time setter T operates, the contact Ta closes and the electromagnetic coil V is energized, and the water control valve 14 opens and the water in the water supply pipe 6 passes through the water control valve 14 connector 15 and into the water receiving tank 1. flows into. Note that when the water in the water tank 1 becomes full.

Water is discharged to the outside via an overflow pipe 10. Then, when the time reaches 5:15, the time setter T returns,
The contact Ta is opened, the electromagnetic coil V is deenergized, and the water control valve 14 is closed, stopping water from flowing.

At this time, since all the red water in the water supply pipe 6 has been removed, no red water will be generated from the water tap 5.

Although the time setting device T was set to operate only for 15 minutes from 5:00 to 5:15, it is of course possible to set it multiple times a day.

According to this embodiment, water in the water supply pipe can be circulated and drained into the water receiving tank at a predetermined time for a predetermined period of time to remove red water.
Moreover, the effect that power consumption is also small can be obtained.

〔Effect of the invention〕

According to the present invention, red water in the water supply pipe is removed by connecting the lower part of the water supply pipe to a water receiving tank via a water control valve and a connecting pipe, and allowing water in the water supply pipe to flow into the water receiving tank at a predetermined time and for a predetermined period of time. can do. Moreover, since the time required for water to flow into the water tank is short, there is an effect that power consumption is also short.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the entire water supply device, and FIG. 2 is an electrical circuit diagram of the device. 1...Water tank, 2...Pump, 3...Rise pipe,
4... Elevated water tank, 5... Hydrant, 6 Water supply pipe, 7 Float sensor, 14... Water control valve, 15... Connecting pipe, T
...Time setting device, ■...Water control valve coil. 2nd curve and -N

Claims (1)

[Claims] (1) Water is supplied from the above-ground tank to the rooftop tank via a riser pipe, water is supplied from the rooftop tank to the hydrant on each floor, and the lower end of the water supply pipe is connected to the above-ground tank to form a circulation piping. A water supply system for buildings that is characterized by installing a water container and circulating it at a predetermined time and for a predetermined amount of time.