JPH11158949A - Water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water supply system, in which water leaks from a normal drainage passage and sections excepting the normal drainage passage is detected. SOLUTION: The water supply system has a water meter section 2 and terminal equipments 4 such as a faucet installed in the downstream side of the water meter section 2. The water supply system has open-close signal generators 8 for transmitting the states of the opening and closing of each terminal equipment 4, a flowing-water signal generator 7 being mounted on the water meter section 2 and for transmitting the states of the flowing and stopping of water and a controller 9 for deciding the leakage of water under the state, in which these open-close signals and water-flowing signal are received, the close signals of all terminal equipments 4 are received and a water- flowing signal is received from the water meter section 2, at that time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply device for promptly informing of the occurrence of water leakage when water leakage occurs in a water supply system in a house.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open Publication No. Hei 7-3 discloses a method of automatically shutting off a valve of a main pipe by detecting leakage of pipes in a building.
No. 17113 is known. In this case, water is directly detected by a water leak sensor installed under the floor, and a valve of a main pipe is automatically shut off.

[0003]

However, in this apparatus, although water leaking from a hole in the pipe and water leaking from a joint part other than the regular drainage path can be detected, a ball tap in the toilet tank or the like can be detected. If the drip leaks due to deterioration or scratches on the valve seat of the faucet, or if the user intends to close it but has not shut it down firmly, the leaked water will be discharged directly to the drain pipe through the toilet bowl or basin. There is a problem that the water leak sensor installed in the can not detect water leak.

In addition, even when water is spilled on the floor by mistake, the water leak sensor detects the water and shuts off the main valve, so that water cannot be discharged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a proper drainage path and a proper drainage path by judging a leak in a state where water in a main pipe is moving while a person recognizes that water is stopped. In addition to detecting leaking water, even if it is judged that there is a leak, immediately issue a warning without shutting off the valve of the main pipe and notify the leak, secure a period for finding and repairing the leak point, An object of the present invention is to provide a water supply device that shuts off a main valve when a predetermined time has elapsed without anyone noticing.

In addition, when the amount of flowing water is excessive, the above-mentioned predetermined time is automatically shortened so that the main valve can be shut off before the damage of the leakage increases.

Another object of the present invention is to make it possible to immediately shut off the main valve by a person's will in an emergency such as an accidental rupture of a pipe during repair.

[0008]

In order to achieve the above object, the present invention relates to a water supply device having a water meter section and terminal equipment such as a faucet installed downstream of the water meter section. An open / close signal generator for transmitting the open / close state, a running water signal generator for transmitting the running water stop state provided in the water meter section, and receiving these open / close signals and running water signals to receive the closing signals of all end devices And a control device for determining a leak in a state where a running water signal is received from the water meter section.

Further, the control device of the present invention generates an alarm when it is determined that water has leaked, and stops the main valve of the main pipe when it is determined that water has been continuously leaked for a predetermined time.

Further, the control device of the present invention is provided with a judgment circuit for judging a leak and, when the amount of flowing water is excessive, shortening a predetermined time and stopping the main valve of the pipe at an early stage. An emergency stop switch is provided to stop the main valve urgently by human will.

[0011]

[Function] Even if a person operates and closes all terminal devices and a signal indicating that the terminal device is in a closed state is output from the terminal device, when a running water signal indicating that the water meter is running is generated, the control device is activated. Judge as a leak. Therefore, if the water itself leaks outside the piping in front of the terminal equipment, such as a poorly connected pipe joint or the pipe itself is damaged, or if the valve of the terminal equipment breaks down and does not completely stop water leakage Is discharged through the drainpipe.

When it is determined that water has leaked, an alarm is generated to urge the user to perform inspection and repair. However, if the user is absent and the water leak continues for a predetermined time, the main valve is stopped.

The predetermined time is automatically shortened by a judging circuit provided in the control device when the amount of flowing water is excessive, thereby preventing the damage from water leakage from spreading.

Therefore, since the main valve is open when an alarm occurs, it is easy to find a drip leak from a terminal device or a leak from a pipe, and during that time, water can be discharged from the terminal device.

In the event of an emergency such as an accidental rupture of a pipe during repair, the main valve can be closed by operating an emergency water stop switch.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic sectional view of a house to which a water supply device A of the present invention is applied, FIG. 2 is an external view of a control device, FIG. 3 is a block diagram, and FIG. 4 is an external view of another embodiment of the control device.

As shown in FIG. 1, a house is provided with a main pipe 1 drawn from a water main (not shown), a water meter section 2 provided in the middle thereof, and a water meter section 2.
A water supply pipe 3 branched from the main pipe 1 and a terminal equipment 4 such as a water tap and a ball tap are attached to the end of the water supply pipe 3 on the downstream side of the water supply pipe.
Water is supplied to a water circulating device 5 such as a kitchen or a washing machine, and is drained through a drain pipe (not shown).

The water meter section 2 has a main valve 6 composed of an electromagnetic valve or an electric valve for electrically opening and closing the main pipe 1 and a flowing water sensor FS for detecting a water flow in the main pipe 1. A signal generator 7 is provided.

On the other hand, the terminal device 4 is provided with an open / close signal generator 8 for automatically detecting the open / closed state and generating a signal. The opening / closing signal generator 8 is constituted by a reed switch or the like which is turned on when the handle is in the closed position.

When the valve of the terminal device 4 is constituted by an electromagnetic valve that opens and closes with a touch switch or a foot switch, the state of energization of the electromagnetic valve may be extracted as an open / close signal.

As shown in FIG. 2, the control device 9 is housed in a control panel P installed at an appropriate place in a house. The control panel P is provided with an alarm device 10 such as an alarm lamp L and an alarm buzzer B, and an emergency stop switch 11 and an alarm release switch 12 capable of stopping the main valve 6.

Further, the control device 9 is provided with a judgment circuit 13 for switching the predetermined time to half or less and automatically shortening it when the instantaneous flow exceeds a certain value according to the amount of flowing water.

This determination circuit 13 measures the integrated flow rate,
The main valve 6 may be configured to stop water when a certain flow rate is reached.

As shown in FIG. 3, the signal from the running water signal generator 7 and the signal from the opening / closing signal generator 8 are transmitted to the controller 9 in a wired or wireless manner.
Only when receiving a closing signal from each terminal device 4 and receiving a running water signal from the running water signal generating device 7 determines that the water is leaking and generates an alarm signal, and blinks the warning lamp L of the warning device 10 or a warning buzzer. Ring B.

In this state, the location of the leak is found and repaired or the valve of the terminal device 4 is stopped properly. At this time, since the main valve 6 is open for a predetermined time, the main valve 6 is leaking from the water leakage point, and the water leakage point is easily found. This time is usually 10 to 30 in which all the end devices 4 can be inspected.
Just set it to about a minute.

Since the running water signal disappears when the water leakage is eliminated, the alarm lamp L and the alarm buzzer B are automatically turned off.

If the water leakage state continues for a predetermined time in the absence of a person, the main valve 6 is automatically stopped after a predetermined time. When the amount of flowing water is excessive, a predetermined time is shortened by the determination circuit 13 to stop the main valve 6 in a short time, thereby preventing the damage from leaking from spreading.

At this time, if the blinking of the alarm lamp L and the sounding of the alarm buzzer B are continued, it is immediately known that the main valve 6 is closed due to water leakage.

If the piping is ruptured by mistake during repair, the emergency water stop switch 11 is operated to stop the main valve 6.

In the case of drip leakage due to deterioration or damage of the valve seat of the terminal device 4, it cannot be repaired immediately, but does not lead to a serious accident such as wetting the floor, or if there is a problem from the pipe below the floor itself. When it is necessary to keep the main valve 6 open for a case where the leakage point is settled and the leakage point is settled in a case where the leakage point cannot be found easily with a small leak, the alarm release switch 12 is operated. At this time, only the alarm lamp L is continuously turned on, and the sounding of the alarm buzzer B is stopped. By doing so, it can be seen that the alarm release switch 12 is being operated.

In this embodiment, an alarm lamp L and an alarm buzzer B are provided as the alarm device 10, but either one may be used.

In another embodiment shown in FIG. 4, the control panel P is provided with an open / close signal generator 8 composed of a push button switch PS for inputting the open / close state of each terminal device 4, so that the user can control each terminal device. After confirming that the switch 4 has been closed, the push button switch PS is turned on.

Then, before going to bed or the like, the surroundings of the water are checked, and after confirming that the respective devices 4 are stopped, the push button switch PS which is the open / close signal generator 8 is pressed. At this time, when a running water signal indicating that the water meter is moving is being generated, the control device 9 determines that the water is leaking, generates an alarm signal, blinks the alarm lamp L of the alarm device 10 or turns off the alarm buzzer B. Since it sounds, it can be seen that it has been forgotten to close or has leaked somewhere in the piping.

If this push button switch PS is of a type that automatically returns after a water leak check, it is convenient that the water is not judged again by the control device 9 when water is used again.

[0035]

As described above, according to the present invention, even if a person operates and closes all end devices and a signal indicating the closed state is output from the end device, the water meter is still operating. When the flowing water signal shown is generated, the control device determines that there is water leakage, so if the water itself is leaking to the outside of the pipe in front of the terminal equipment, such as a poor connection of the pipe joint or the pipe itself is damaged, and It is possible to reliably detect both cases in which the valve of the terminal device fails and does not completely stop water, and the leak is discharged through the drain pipe.

When it is determined that water has leaked, an alarm is generated for a predetermined time to urge the user to perform inspection and repair. During that time, since the main valve is open, it is easy to find drip leaks from terminal devices and water leaks from pipes. In addition, water can be discharged from the terminal equipment.

If water leakage continues for a predetermined time in the absence of a user, the main valve is stopped, so that wasteful water can be prevented from flowing out and water leakage damage can be prevented. This predetermined time is automatically shortened when the amount of flowing water is excessive, so that it is possible to prevent the damage from leaking from spreading.

In the event of an emergency such as an accidental rupture of a pipe during repair, the emergency stop switch can be operated to instantly close the main valve to prevent the damage from leaking from spreading.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a house to which a water supply device according to an embodiment of the present invention has been applied.

FIG. 2 is an external view of a control device in the water supply device.

FIG. 3 is a block diagram of signals in the water supply device.

FIG. 4 is an external view of another embodiment of the control device in the water supply device.

[Explanation of symbols]

 A: Residential water supply device 1 ... Main pipe 2 ... Water meter unit 4 ... Terminal equipment 6 ... Main valve 7 ... Flowing signal generator 8 ... Open / close signal generator 9 ... Control device 10 ... Alarm device 11 ... Emergency water stop switch 13 ... Judgment circuit

Claims (4)

[Claims] 1. A water supply device comprising a water meter section and terminal equipment such as a water faucet installed downstream of the water meter section, an open / close signal generator for transmitting an open / close state of each terminal apparatus, and a water meter section. A running water signal generating device that transmits a running water stoppage state, and receives a switching signal and a running water signal, receives a closing signal of all end devices, and receives a running water signal from a water meter section and causes a water leakage. A water supply device, comprising: a control device for determining. 2. The control device according to claim 1, wherein, when it is determined that the water leakage has occurred, an alarm is generated for a predetermined time while the main valve of the main pipe is kept open, and when the water leakage continues, the main valve of the main pipe is stopped. The water supply device according to claim 1, wherein 3. The water supply device according to claim 2, wherein the control device includes a determination circuit that shortens the predetermined time when the amount of flowing water is excessive according to the amount of flowing water. 4. The water supply according to claim 2, wherein the control device is provided with an emergency water stop switch capable of stopping the water of the main valve by a person's will separately from the judgment. apparatus.