JP2023128387A - Automatic water filling system during disaster - Google Patents

Abstract

To provide an automatic water filling system during disaster that can cope even with a case where shaking with locally varying seismic intensities due to differences in the ground, etc. has occurred, in a simple configuration using an existing configuration provided in a house.SOLUTION: An automatic water filling system during disaster comprises: a bathtub 1 installed in a house; a water injection unit W that fills the bathtub 1 with water; a gas meter M that is installed in the house, and cuts off gas supply when a seismic sensor detects an earthquake; a reception unit that receives a gas cutoff signal when the gas meter M cuts off the gas supply; and a control unit C that executes a disaster water filling process of filling the bathtub 1 with water by the water injection unit W when the reception unit receives the gas cutoff signal.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an automatic disaster filling system that secures water for daily use by filling a bathtub with water when an earthquake occurs.

When an earthquake occurs, it is assumed that there will be a water outage. Even if the water is cut off, it is necessary to secure water for daily use for toilets, washrooms, etc. An automatic water filling system has been proposed in the event of a disaster that secures water for daily use by filling the area with water.

As a conventional example of such an automatic water filling system in the event of a disaster, a bathtub with a water heater that functions as a water injection part for filling the bathtub with water is equipped with a seismic sensor that detects the occurrence of an earthquake. There is a bathtub with a bathtub that is filled with water (for example, see Patent Document 1).

Another conventional example of an automatic water filling system in the event of a disaster includes a bath water heater that functions as a water injection unit that fills the bathtub with water, and a remote control with a TV function that allows you to remotely control the bath water heater and watch TV broadcasts. There is a remote control with a function that, when receiving an emergency warning broadcast from a broadcasting station, activates a bath water heater to fill a bathtub with water (for example, see Patent Document 2).

Japanese Patent Application Publication No. 2006-22970 Japanese Patent Application Publication No. 2008-45839

In Patent Document 1, since a bathtub with a water heater is equipped with a seismic sensor to detect the occurrence of an earthquake, the production cost of the bathtub with a water heater increases, and it is difficult to simplify the automatic water filling system in the event of a disaster. There are disadvantages in achieving this goal.

In Patent Document 2, a bathtub is filled with water based on an emergency warning broadcast accompanying the occurrence of a disaster such as an earthquake, but since the emergency warning broadcast covers a wide area, the seismic intensity may vary locally due to differences in the ground, etc. There is a risk that it will not be possible to respond in the event of an earthquake with different
By the way, instead of emergency warning broadcasts, it is possible to fill the bathtub with water based on emergency information regarding weather, infrastructure, etc., but since emergency information also covers a wide area, it may be localized due to differences in the ground, etc. If an earthquake occurs with different seismic intensities, there is a risk that it will not be possible to respond.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a simple structure that utilizes the existing structure of a house, and to prevent the occurrence of shaking with locally varying intensities due to differences in the ground, etc. The purpose of the present invention is to provide an automatic water filling system in times of disaster that can be used even in the event of a disaster.

The automatic water filling system in the event of a disaster of the present invention has a characteristic configuration including a bathtub installed in a house, a water injection part that fills the bathtub with water, and a seismic sensor installed in the house that supplies gas when an earthquake is detected. a gas meter to be cut off; a receiving unit that receives a gas cutoff signal indicating that the gas meter has cut off gas supply; and a disaster water supply unit that fills the bathtub with water when the receiving unit receives the gas cutoff signal. The present invention also includes a control unit that executes tension processing.

In other words, when the seismic sensor of the gas meter installed in the house detects an earthquake, the gas meter cuts off the gas supply, and when the receiving section receives a gas cutoff signal that cuts off the gas supply, the control section However, a disaster water filling process will be performed in which the bathtub is filled with water at the water injection unit, and water for daily use will be stored in the bathtub.

Since gas meters installed in houses are originally equipped with seismic sensors that detect the occurrence of earthquakes, it is possible to detect the occurrence of earthquakes with a simple configuration that utilizes the existing configuration installed in the house. I can do it.

Moreover, since gas meters are installed in each house, they will sense the occurrence of an earthquake with locally varying intensities depending on the ground on which the house is located. Even if an earthquake with a different seismic intensity occurs, the control unit will appropriately perform the disaster water filling process.

In short, according to the characteristic configuration of the automatic disaster water filling system of the present invention, it is possible to use a simple configuration that utilizes the existing configuration of a house when shaking occurs with locally varying seismic intensities due to differences in the ground, etc. We can provide an automatic water filling system that can be used in times of disaster.

A further feature of the automatic disaster water filling system of the present invention is that the control section executes the disaster water filling process when detecting that the drain hole of the bathtub is closed.

That is, when it is detected that the drain hole of the bathtub is closed, the disaster filling process is executed, and when it is not detected that the bathtub drain hole is closed, the disaster filling process is not executed.
That is, when it is detected that the drain hole of the bathtub is closed by a drain plug or the like, the emergency water filling process is executed.

Therefore, by performing the emergency water filling process when the drain hole of the bathtub is not closed, it is possible to avoid wasteful water that is poured into the bathtub and drained without being stored.

In short, according to the further feature of the automatic disaster water filling system of the present invention, it is possible to avoid the waste of water poured into a bathtub being drained without being stored.

A further characteristic configuration of the automatic disaster water filling system of the present invention is that the bathtub is equipped with an automatic drain plug,
The control unit executes a closing operation process for closing the automatic drain valve when executing the disaster water filling process.

In other words, when executing the disaster water filling process, the control unit executes the closing operation process to close the automatic drain valve, so even if the automatic drain valve is in the open state, the disaster water filling process cannot be executed. When doing so, the automatic drain valve can be closed.

Therefore, when the drain valve of the bathtub is closed, the emergency water filling process is executed, thereby avoiding the waste of water poured into the bathtub from being drained from the drain hole of the bathtub without being stored. , domestic water can be stored appropriately in the bathtub.

In short, according to the further characteristic configuration of the automatic disaster water filling system of the present invention, water for daily use can be appropriately stored in the bathtub while avoiding the waste of water poured into the bathtub being drained without being stored. .

A further characteristic configuration of the automatic disaster water filling system of the present invention is that the control unit stops the disaster water filling process when a predetermined water injection time has elapsed after starting water injection or when a set water injection state is reached. be.

In other words, the emergency water filling process will be stopped when the predetermined water filling time has elapsed from the start of water filling or when the set water filling state is reached. The amount of water suitable for the volume of water can be stored in the bathtub.

In short, according to the further characteristic configuration of the automatic disaster water filling system of the present invention, it is possible to store water in the bathtub in an amount appropriate for the volume of the bathtub while preventing poured water from overflowing from the bathtub. .

A further feature of the automatic disaster water filling system of the present invention is that an emergency power supply is provided to supply power to the receiving section, the water injection section, and the control section in the event of a power outage in the commercial power system. be.

In other words, when an earthquake occurs, it is assumed that the commercial power system will experience a power outage, but even if the commercial power system loses power, power will still be supplied to the receiving unit, water injection unit, and control unit from the emergency power source. , it is possible to appropriately perform disaster water filling processing.

In short, according to the characteristic configuration of the automatic disaster water filling system of the present invention, even if the commercial power system has a power outage, the disaster water filling process can be appropriately executed.

FIG. 1 is a schematic diagram showing the overall configuration of an automatic water filling system during a disaster. FIG. 3 is a diagram showing a control configuration. FIG. 3 is a diagram showing a power supply configuration. It is a figure showing the composition of a heat source machine. It is a flow chart showing control operation.

[Embodiment]
Embodiments of the present invention will be described below based on the drawings.

(Overall configuration of automatic water filling system during disasters)
As shown in Figure 1, the automatic disaster water filling system controls a bathtub 1 inside a bathroom Y in a house such as a general residence, a heat source machine G installed outside the house, and the operation of the heat source machine G. It includes an operation control section C (an example of a control section) and a gas meter M that is installed outdoors of a house and supplies fuel gas to gas consuming devices such as a heat source machine G. Incidentally, the heat source device G includes a water injection part W that fills the bathtub 1 with water, the details of which will be described later.

As shown in FIG. 2, a main remote controller R1 and a bathroom remote controller R2 are provided as remote controllers R that issue various control commands to the operation control section C. That is, the operation control section C, the main control section B1 of the main remote control R1, and the bathroom control section B2 of the bathroom remote control R2 are connected so that they can communicate various information.
The main remote controller R1 is installed on a wall near the kitchen, and the bathroom remote controller R2 is installed on a wall near the bathtub 1 inside the bathroom Y (see FIG. 1).

As shown in FIG. 1, the bottom of the bathtub 1 is provided with an automatic drain valve V for draining bathtub water from the bathtub 1. The automatic drain plug V includes a plug main body 45 that opens and closes the drain hole 1a of the bathtub 1, an electric opening/closing drive section 46 that opens and closes the plug main body 45, and an opening/closing drive section based on an opening/closing command from an operation control section C. 46, and an open/close position detection sensor 48 for detecting the open/close position of the tap body 45 in order to detect the open/close state of the automatic drain valve V.
Incidentally, the opening/closing position detection sensor 48 is configured, for example, as a magnetic sensor that detects the vertical position of a magnetic part provided in the stopper main body 45, and the opening/closing drive section 46 is configured, for example, as an electric motor for lifting and lowering the stopper main body. It is configured in a form that provides

The operation control unit C is configured to execute a closing operation process to close the automatic drain valve V when executing a disaster water filling process to be described later. In other words, when executing the disaster water filling process, the operation control unit C checks the detection state of the open/closed position detection sensor 48 with respect to the drain valve control unit 47, and detects that the automatic drain valve V is not in a closed state. Sometimes, a command to close the automatic drain valve V is given to the drain valve control unit 47 to execute a closing operation process to close the automatic drain valve V, and then, after that, the opening/closing position detection sensor 48 is sent to the drain valve control unit 47. is configured to check the detection status of.
Incidentally, the bathroom remote controller R2 and the main remote controller R1 are equipped with a faucet operation switch that commands the opening and closing of the automatic drain faucet V, and the operation control section C normally operates the automatic drain faucet based on the open and close commands of the faucet operation switch. It is configured to control opening and closing of the tap V.

(About gas meters)
As shown in FIG. 2, the gas meter M includes an ultrasonic type or membrane type gas measuring section 49 to measure the gas flow rate (gas flow rate per unit time).
Further, the gas meter M is equipped with a seismic sensor 50. When the seismic sensor 50 detects shaking of a preset magnitude or more, the gas meter control unit 51 determines that an earthquake has occurred, closes the cutoff valve 52 that cuts off the gas supply path (not shown), and configured to cut off the supply.

The gas meter M is equipped with a gas meter side communication section 53 for communicating with the management server F. The gas meter side communication unit 53 is connected to a repeater 54 using LPWA, and the repeater 54 is communicably connected to the management server F via the Internet N (an example of a network).
That is, the gas meter side communication unit 53 is connected to the management server F via the Internet N using a repeater 54 connected using LPWA so as to be able to communicate various information.
Incidentally, as the LPWA, for example, sigfox, LoRaWAN, and IP500 can be applied.

Then, when the gas meter control section 51 communicates the measurement information of the gas metering section 49 to the management server F through the gas meter side communication section 53 and, in addition, closes the cutoff valve 52 to cut off the gas supply, the gas meter side communication section 53 It is configured to communicate a gas cutoff signal to the management server F.
Incidentally, the management server F manages the gas consumption of the house for purposes such as collecting gas usage fees based on the metering information from the gas metering unit 49, and also monitors the operating status of the gas meter M based on the gas cutoff signal. will be monitored.

(Regarding communication between the operation control unit and gas meter)
As shown in FIG. 2, the main remote control R1 is provided with a remote control communication section J (an example of a receiving section) connected to a router U (WiFi router), and the router U is connected via the Internet N (an example of a network). and is communicatively connected to the management server F.

The remote control communication unit J is configured to receive a gas cutoff signal from the management server F.
That is, the remote control communication section J is configured to receive the gas cutoff signal transmitted by the gas meter M via the management server F, and communicate it to the operation control section C.

The operation control unit C is configured to execute a disaster water filling process in which the water injection unit W injects water into the bathtub 1 to fill the bathtub 1 with water when the remote control communication unit J receives the gas cutoff signal.
Then, when executing the disaster water filling process, the operation control unit C checks the detection state of the open/close position detection sensor 48 with respect to the drain valve control unit 47 as described above, and the automatic drain valve V is in the closed state. If not, a command to close the automatic drain valve V is issued to the drain valve control unit 47, a closing operation process is executed to close the automatic drain valve V, and thereafter, an open/close position detection sensor is sent to the drain valve control unit 47. It is configured to check the detection status of 48.

(About power supply configuration)
As shown in FIG. 3, a power supply device E is provided that supplies power from a commercial power source S to a heat source machine G, and the power supplied to the heat source machine G is transmitted to a main remote control R1, a bathroom remote control R2, and an automatic drain valve. It is configured to be supplied to V (opening/closing drive unit 46, drain valve control unit 47, opening/closing position detection sensor 48).

The power supply device E is supplied with an emergency power supply 55, a commercial power supply monitoring unit 56 that detects a power outage of the commercial power supply S, and a commercial power supply state that supplies power from the commercial power supply S and power from the emergency power supply 55. A circuit switching unit 57 is provided for switching between the emergency power supply state and the emergency power supply state.
When the commercial power supply monitoring unit 56 detects a power outage of the commercial power supply S in the commercial power supply state, the circuit switching unit 57 is switched to the emergency power supply state, and even if the commercial power supply S is out of power, the heat source equipment G, the main It is configured so that power can be continuously supplied to the remote controller R1, the bathroom remote controller R2, and the automatic drain valve V.

The emergency power source 55 may be configured using a solar power generation unit, a generator that generates power using various fuels such as a fuel cell, a commercial power source S, and a storage battery that stores the power of the solar power generation or generator. I can do it.
Incidentally, when a storage battery is provided as the emergency power source 55, a power conversion unit that converts the DC power of the storage battery into AC power similar to AC power from the commercial power source S is provided.

(Configuration of heat source machine)
As shown in FIG. 4, the heat source device G heats water from a water supply channel 4 connected to a general household water pipe, and supplies the heated hot water to a bathtub 1 and a hot water tap via a hot water supply channel 5. 2, and a bathtub water heating section D for reheating bathtub water in the bathtub 1. The hot water supply path 5 is provided with a hot water supply path 6 branching from the hot water supply path 5 for supplying hot water passing through the hot water supply path 5 to the bathtub 1.

The hot water supply heating section A includes a hot water supply heat exchanger 8 to which the hot water supply channel 4 is connected to the inlet side and the hot water supply channel 5 to the outlet side, a hot water supply burner 9 that heats the hot water supply heat exchanger 8, and , is equipped with a hot water supply fan 10 that supplies combustion air to the hot water supply burner 9.
A hot water supply side gas supply path 11 that supplies fuel gas from the gas meter M is connected to the hot water supply burner 9 so that the water passing through the hot water supply heat exchanger 8 is heated by the combustion gas of the hot water supply burner 9. It is configured.

The bathtub water heating section D has a bathtub water return path 12 of a bathtub water circulation path K that circulates bathwater between the bathtub 1 and the bathtub water heating section D connected to the entrance side, and a bathtub water return path 12 of the bathtub water circulation path K that circulates bathwater between the bathtub 1 and the bathtub water heating section D. A reheating heat exchanger 14 to which the passage 13 is connected to the outlet side, a reheating burner 15 that heats the reheating heat exchanger 14, and an additional reheating burner 15 that supplies combustion air to the reheating burner 15. A blower fan 16 for combustion is provided.
The reheating burner 15 is connected to a reheating side gas supply path 17 that supplies fuel gas from the gas meter M, and the bath water passing through the reheating heat exchanger 14 is transferred to the combustion gas of the reheating burner 15. It is configured to be heated by.

The hot water supply side gas supply path 11 and the reheating side gas supply path 17 are provided with an electromagnetic gas proportional valve 18 that adjusts the amount of fuel gas supplied, and an intermittent valve 19 that disconnects the supply of fuel gas.

(General hot water supply configuration)
The water supply channel 4 is provided with a water supply thermistor 20 that detects the temperature of the water supply, and a water amount sensor 21 that detects the amount of water supply. A portion of the water supply channel 4 downstream of the water supply thermistor 20 and the water amount sensor 21 is connected to the hot water supply channel 5 by a water supply bypass channel 22 that bypasses the hot water supply heat exchanger 8 .

A mixing valve 23 that adjusts the mixing ratio of the amount of hot water from the hot water supply heat exchanger 8 and the amount of water from the water supply bypass path 22 is provided at the connection point between the hot water supply path 5 and the water supply bypass path 22 . In the hot water supply path 5, a hot water outlet thermistor 24 for detecting the temperature of the hot water sent from the hot water supply heat exchanger 8 is provided upstream of the connection point of the water supply bypass path 22. On the downstream side, in order from the upstream side, there is a hot water supply thermistor 25 that detects the temperature of hot water after being mixed in the mixing valve 23, a water proportional valve 26 that adjusts the flow rate of hot water, and a water supply thermistor 26 that detects interruptions in general hot water supply. A water amount sensor 27 for detecting an interruption is provided.

(Configuration for reheating)
A circulation adapter H is installed on the side wall near the bottom of the bathtub 1, and the circulation adapter H has a bathtub water return path 12 of the bathtub water circulation path K and a bathtub water outflow path 13 of the bathtub water circulation path K. It is connected. The bathtub water return path 12 and the bathtub water outflow path 13 are composed of a pipe section located inside the heat source device G and a pipe section located outside the heat source device G.

In the bathtub water return path 12, in order from the upstream side, there is a bathtub water temperature detection sensor 38 that detects the temperature of the bathtub water passing through the bathtub water return path 12, and a bathtub water temperature detection sensor 38 that detects the pressure of the bathtub water inside the bathtub water return path 12. A water level sensor 39 for detecting the water level in the bathtub 1, a water flow switch 40, and a bathtub water circulation pump 37 are provided.
The bathtub water inflow path 13 is provided with a bathtub temperature detection sensor 41 that detects the temperature of the bathtub water heated in the reheating heat exchanger 14 .

When the operation control unit C operates the bathtub water circulation pump 37, the bathtub water stored inside the bathtub 1 is supplied to the reheating heat exchanger 14 through the bathtub water return path 12, and the reheating heat exchanger 14 is supplied to the reheating heat exchanger 14. Bathtub water heated in the vessel 14 is supplied to the bathtub 1 through a bathtub water outflow path 13. In this way, the bathtub water in the bathtub 1 is reheated.

(Hot water filling configuration and water filling configuration)
A hot water supply path 6 branched from the hot water supply path 5 is connected to the downstream side of the bathtub water circulation pump 37 in the bathtub water return path 12. The hot water filling path 6 is provided with a hot water filling solenoid valve 42 for opening and closing the hot water filling path 6 and a hot water filling check valve 43 in order from the upstream side.
Incidentally, although not shown, a well-known air layer forming hopper may be provided between the hot water filling solenoid valve 42 and the hot water filling check valve 43.

Then, when the hot water filling solenoid valve 42 is opened, the hot water heated in the hot water supply heating section A is supplied to the bathtub water return path 12 via the hot water filling path 6, and the hot water supplied to the bathtub water return path 12 is is supplied to the bathtub 1 through the bathtub water outflow path 13 and the bathtub water return path 12 in a state where it flows upstream and downstream of the bathtub water circulation pump 37 .

Furthermore, when the hot water filling electromagnetic valve 42 is opened with the heating operation of the hot water supply heating unit A stopped, that is, with the hot water supply burner 9 stopping combustion, the bathtub 1 is filled with water, and the water supply channel 4 is opened. The hot water (cold water) is supplied to the bathtub water return path 12 via the hot water supply path 6 in an unheated state in the hot water supply heating section A, and the hot water (cold water) supplied to the bathtub water return path 12 is The water is supplied to the bathtub 1 through the bathtub water outflow path 13 and the bathtub water return path 12 in a state where it flows upstream and downstream of the bathtub water circulation pump 37 .
That is, in this embodiment, the water injection part W that fills the bathtub 1 with water includes the hot water supply heating part A, the hot water filling path 6, and the hot water filling solenoid valve 42 as main parts.

(Operation control of heat source equipment)
The operation control unit C controls the operation of the heat source device G based on commands from the main remote controller R1 and the bathroom remote controller R2, and performs hot water supply operation (general hot water supply operation, hot water filling operation) to supply hot water to the bathtub 1 and the hot water faucet 2. operation), executes a reheating operation for reheating the bathtub water in the bathtub 1.
Further, as described above, when the remote control communication unit J receives the gas cutoff signal, the operation control unit C is configured to perform a disaster water filling process in which the water injection unit W injects water into the bathtub 1 to fill it with water. There is.
Since the hot water supply operation (general hot water supply operation, hot water filling operation) and reheating operation are well known, in this embodiment, a detailed explanation of the general hot water supply operation and the hot water reheating operation will be omitted, and the hot water filling operation will be briefly explained. explain.

The operation control unit C executes hot water filling operation (hot water filling process) such that the temperature of the bathtub water in the bathtub 1 reaches the target hot water filling temperature and the water level of the bathtub water in the bathtub 1 reaches the target water level. become.
Specifically, when the automatic bath switch of the main remote controller R1 or the bathroom remote controller R2 instructs the operation control unit C to fill with hot water, the operation control unit C executes the process of closing the automatic drain valve V, and then starts the hot water filling operation (hot water filling operation). processing).

In hot water filling operation (hot water filling process), hot water filling process and determination process are repeatedly executed.
In the hot water filling process, the hot water filling solenoid valve 42 is opened, the hot water supply burner 9 is ignited, and the target hot water filling temperature set by the bathtub temperature setting switch of the main remote control R1 or the bathroom remote control R2 is set by the water flow sensor. Based on the water amount detected by 21, the water temperature detected by the water supply thermistor 20, the temperature detected by the outlet thermistor 24, and the temperature detected by the hot water supply thermistor 25, the gas proportional valve is operated so that the temperature detected by the hot water supply thermistor 25 becomes the target hot water filling temperature. 18 and the mixing valve 23, and when stopping the hot water filling process, the hot water filling solenoid valve 42 is closed and the combustion of the hot water supply burner 9 is stopped. It is configured as follows.

In the determination process, the bathtub water circulation pump 37 is operated for a set time for circulation judgment, and while the bathtub water circulation pump 37 is in operation, the detection information of the water flow switch 40 is read to confirm the presence or absence of bathtub water.
Then, on the condition that the water flow switch 40 detects the water flow, after the bathtub water circulation pump 37 is stopped and the set standby time has elapsed, the detection information of the water level sensor 39 is read and the water level in the bathtub is detected. It is composed of

In other words, in the hot water filling operation (hot water filling process), the process of alternately executing the hot water filling process of supplying hot water into the bathtub 1 over the set time for pouring and the above-mentioned determination process is performed depending on the water level detected by the water level sensor 39. This will be repeated until the water level reaches the target level. Incidentally, in this embodiment, when the water level detected by the water level sensor 39 exceeds the target water level, the reheating operation is performed to raise the temperature of the bathtub water to the target hot water filling temperature or higher, and then the hot water filling operation is started. (Tempering process) is completed.

(About water filling treatment)
As described above, when the remote control communication section J receives the gas cutoff signal, the operation control section C executes a disaster water filling process in which the water injection section W injects water into the bathtub 1 to fill it with water.
The operation control unit C is configured to stop the disaster water filling process when a predetermined time for water injection (for example, 10 minutes) has elapsed after starting water injection, or when the set water injection state is reached after starting water injection. has been done.
The present embodiment will be described below assuming that the system is configured to stop the disaster water filling process when the set water injection state is reached.

The set water injection state can be an integration type in which the set water injection state is reached when the integrated value of the water amount detected by the water amount sensor 21 reaches the set target amount, or a water filling state using the water level sensor 39 as in the hot water filling operation (hot water filling process). There is also a water level measurement type in which the set water injection state is reached when the water level in the bathtub detected by the water level reaches the target water level.
Incidentally, in the case of the water level measurement type, the water injection process and the determination process are repeatedly executed similarly to the hot water filling operation (hot water filling process).
In the following explanation, it is assumed that the set water injection state is an integral type.

(About disaster processing of the operation control unit)
Hereinafter, based on FIG. 5, a description will be given of the disaster process that the operation control unit C executes when the remote control communication unit J receives the gas cutoff signal.
First, the remote control communication section J determines whether or not it has received a gas cutoff signal (#1), and if it has not received a gas cutoff signal, it waits until it receives a gas cutoff signal.

In the process #1, if it is determined that a gas cutoff signal has been received, it is determined whether the automatic drain valve V is closed or not based on the detection information of the automatic drain valve V open/close position detection sensor 48 (the drain hole 1a is closed (#2).
In the process of #2, if it is determined that the automatic drain valve V is closed (the drain hole 1a is closed), a disaster water filling process is performed in which the bathtub 1 is filled with water at the water injection part W (# 5).

In the process #2, if it is determined that the automatic drain valve V is not closed, a command to close the automatic drain valve V is issued to the drain valve control unit 47, and a closing operation is performed to close the automatic drain valve V. Execute the process (#3). Thereafter, based on the detection information of the automatic drain valve V open/close position detection sensor 48, it is determined whether the automatic drain valve V is closed (whether or not the plug body 45 is in the closed position) (# 4) If it is determined that the automatic drain valve V is closed, a disaster water filling process is executed (#5).

If it is determined in the process #4 that the automatic drain valve V is not closed, the process #3 is repeated. Incidentally, although illustration is omitted, if it is not detected in the process #4 that the automatic drain valve V is closed even if the process #3 is repeated several times (for example, three times), the process ends. It is configured as follows.

After executing the disaster water filling process in #5, it is determined whether or not the set water injection state (when the integrated value of the water amount detected by the water flow sensor 21 reaches the set target amount, the set water injection state is entered) (#6 ), the disaster water filling process of #5 is executed until the set water injection state is reached, and when the set water injection state is reached, the process of stopping water injection by the water injection part W (#7) is executed to end the disaster water filling process. .

Incidentally, although not shown in FIG. 5, when it is determined in the process #1 that a gas cutoff signal has been received, the above-mentioned determination process is executed to ensure that the water level inside the bathtub 1 is equal to or higher than the set water level. If there is bathtub water at a level higher than or equal to the set water level (or higher than the set level) in the bathtub 1, the process from #2 onward is stopped; If there is no bathtub water equal to or higher than the set water level (or higher than the set amount) inside the bathtub 1, the process may be carried out in such a manner that the processes after process #2 are continued.

When continuing the process after process #2, the amount of water to be poured when executing the disaster water filling process in #5 is determined based on the amount of bathtub water stored in the bathtub 1 in advance. It is preferable to change and adjust the amount of bathtub water stored in advance so that it decreases as the amount of bathtub water increases, thereby suppressing poured water from overflowing from the bathtub 1.

[Another embodiment]
(1) In the above embodiment, the remote control communication unit J receives the gas cutoff signal from the gas meter M via the management server F, but the remote control communication unit J receives the gas cutoff signal from the gas meter side communication unit 53. It may be implemented in a form in which the remote control communication section J directly receives the gas cutoff signal from the gas meter M by being directly connected.

(2) In the above embodiment, the case where the remote control communication unit J included in the main remote control R1 is used as the receiving unit and the remote control communication unit J receives the gas cutoff signal from the gas meter M has been exemplified. It may be implemented in a form that includes a receiving section that receives a gas cutoff signal from the gas meter M.

(3) In the above-mentioned embodiment, the case where an automatic drain plug V is provided is illustrated, but the embodiment may be implemented with a manually operated drain plug that opens and closes the drain hole 1a of the bathtub 1.
In this case, in order to detect that the drain hole 1a is closed, first, hot water (cold water) is supplied from the water injection part W to the extent that the circulation adapter H is submerged in water, and then, in the above-mentioned determination process, When the water level is detected, it is detected that the drain valve is closed, and when the water level of the bathtub is not detected, it is detected that the drain valve is not closed.

(4) In the above embodiment, after executing the automatic drain valve V closing operation process, it is determined again whether or not the automatic drain valve V is closed. After the operation process is executed, the process of determining whether the automatic drain valve V is closed again may be omitted.

(5) In the above embodiment, when a gas cutoff signal is received from the gas meter M, it is checked whether the automatic drain valve V is closed or not, and if the automatic drain valve V is not closed, the closing operation process is executed. However, upon receiving the gas cutoff signal from the gas meter M, the automatic drain valve V may be immediately closed.

(6) In the above embodiment, the case where the automatic drain valve V is provided with the drain valve control unit 47 is illustrated, but the operation control unit C may constitute the drain valve control unit 47. That is, the operation control section C may control the operation of the opening/closing drive section 46 and also control the detection operation of the opening/closing position detection sensor 48 .

(7) In the above embodiment, the automatic drain valve V is illustrated in which the opening/closing drive unit 46 directly opens and closes the plug body 45. The specific configuration of the automatic drain tap V can be changed in various ways, such as connecting the opening/closing drive unit 46 to the tap body 45 by a linking mechanism such as an operating wire to open and close the tap body 45.

Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments as long as no contradiction occurs. Further, the embodiments disclosed in this specification are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the purpose of the present invention.

1 Bathtub 1a Drain hole 55 Emergency power supply C Control section J Receiving section M Gas meter V Automatic drain plug W Water injection section

Claims (5)

A bathtub installed in a house, a water injection part that fills the bathtub with water, a gas meter installed in the house that cuts off the gas supply when a seismic sensor detects an earthquake, and a gas meter that cuts off the gas supply when the seismic sensor detects an earthquake. The bathtub includes a receiving section that receives a gas cutoff signal, and a control section that executes a disaster water filling process of filling the bathtub with water using the water filling section when the receiving section receives the gas cutoff signal. Automatic water filling system in case of disaster. The automatic disaster water filling system according to claim 1, wherein the control unit executes the disaster water filling process when detecting that the drain hole of the bathtub is closed. the bathtub includes an automatic drain plug;
The automatic disaster water filling system according to claim 1 or 2, wherein the control unit executes a closing operation process for closing the automatic drain valve when executing the disaster water filling process. The automatic water filling in case of a disaster according to any one of claims 1 to 3, wherein the control unit stops the disaster water filling process when a predetermined time for water injection has elapsed after starting water injection or when a set water injection state is reached. system. The automatic water filling in the event of a disaster according to any one of claims 1 to 4, further comprising an emergency power source that supplies power to the receiving unit, the water injection unit, and the control unit in the event of a power outage in the commercial power system. system.

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