JPH09243165A - Hot-water apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot-water apparatus in which hot-water plug closing operations and switching operations to general hot-water control, which are required when a predetermined quantity of hot water has been supplied, can be performed without fail. SOLUTION: There are provided a hot-water apparatus A to heat water supplied from a feed water line 12, a hot-water line 13 to lead the hot water heated at the apparatus A to a manual hot-water feed plug 15, and a motor-operated intermittent valve 20 to intermittently feed the hot water to the line 13, and a hot-water feed control means 32 to control the operation of the apparatus A and the valve 20 under conditions that the operation can be switched to a general hot-water feed control to feed hot water by switching the valve 20 to an open state and a hot-water quantity control to suspend hot-water feed by switching the valve 20 to a closed state when the quantity of hot water fed to the line 13 has reached a target hot-water quantity, based on command information from a command means 31, is provided, and a reporting means 29 is provided. And immediately after suspending hot-water feed in the hot-water feed control, a reporting control is conducted to actuate the means 29, and the means 32 is so constituted that, when the valve 20 is in a closed state after the lapse of a set time period from the suspension of hot-water feed, a hot-water plug closing forgetting-prevention control is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply device capable of supplying a predetermined amount of hot water to a bathtub or the like, and more specifically, a hot water supply device for heating water supplied from a water supply passage, and a hot water supply device for heating the water supply device. A hot water supply passage for guiding hot water to a manually operated hot water tap and an electrically operated disconnecting valve for connecting and disconnecting the flow of hot water to the hot water supply passage are provided. It is possible to switch between general hot water supply control that switches to the hot water supply mode to supply hot water, and hot water supply amount control hot water supply control that switches to the cutoff mode to stop the hot water supply when the hot water supply amount to the hot water supply passage reaches the target hot water supply amount. The present invention relates to a hot water supply device including hot water supply control means for controlling the operations of the hot water supply device and the shutoff valve in such a state.

[0002]

2. Description of the Related Art As a hot water supply apparatus of this type, Japanese Patent Laid-Open No. 5-
The thing etc. which were disclosed by the 157348 gazette are known. The hot water supply device disclosed in this gazette supplies hot water to the bath tub by dropping it with a hot water tap for a bath tub, and by performing hot water supply control by performing hot water supply control, the hot water supply amount to the bath tub becomes a predetermined amount. The on / off valve is automatically switched to the cut-off state, and the hot water supply to the bathtub is automatically stopped to supply a predetermined amount of hot and cold water to the bathtub. The buzzer sounds just before the amount reaches a predetermined amount to notify the user that the amount of hot water supplied to the bathtub will reach the predetermined amount.

[0003]

According to the above-mentioned conventional technique, even if the bathtub hot-water tap is forgotten to be closed after a predetermined amount of hot water has been supplied, the disconnecting valve is in the flow cutoff state. As a result, it is possible to prevent unnecessary waste of hot and cold water from being supplied.

However, according to the above-mentioned conventional technique, the buzzer sounds only immediately before the hot water supply amount reaches the predetermined amount to notify the user that the hot water supply amount reaches the predetermined amount. There is a possibility that you may miss the sound, so if the amount of hot water supply reaches the specified amount,
It was easy to forget to close the hot water tap and switch the hot water supply amount control hot water supply control to general hot water supply control.

If the operator forgets to perform such an operation, the intermittence valve remains in the flow cutoff state, so that even if the hot water tap is opened, it is inconvenient that hot water cannot be supplied. Especially,
When a shower is connected to the hot water supply passage, it is very inconvenient to use such a shower when the shower cannot be used.

An object of the present invention is to provide a hot water supply device having an excellent function of preventing forgetting the closing operation of the hot water tap and the switching operation to the general hot water supply control, which are required when the hot water supply of a predetermined amount is completed. is there.

[0007]

According to the present invention as set forth in claim 1, a notification buzzer or the like is provided at or immediately before or immediately after the hot water supply is stopped in the hot water supply amount management hot water supply control when the hot water supply amount reaches the target hot water supply amount. By notifying the user that the hot water supply amount has reached or reached the target hot water supply amount by activating the notification means of, not only urging the hot water tap closing operation and the switching operation to the general hot water supply control but also the hot water supply stop If the intermittent valve is in the flow cutoff state when the set time elapses from
That is, regardless of the above notification, if the hot water tap closing operation or the switching operation to the general hot water supply control is not performed and the hot water supply amount management hot water supply control is still in execution, Since the control to prevent forgetting to close the plug is executed to prompt the closing operation of the hot water supply tap again, the hot water supply amount can be obtained only by activating the notification means such as the notification buzzer at the time when the hot water supply is stopped, immediately before or immediately after that. Compared with the case of notifying the user that the target hot water supply amount has been reached or has reached the target hot water supply amount, it is possible to strongly urge the user to perform a closing operation of the hot water tap, that is, a switching operation to the general hot water supply control.

Therefore, according to the present invention, it is possible to enhance the function of preventing the forgetting of the closing operation of the hot water tap and the switching operation to the general hot water supply control, which are required when the hot water supply of the predetermined amount is completed. It has become possible to suppress the occurrence of a situation in which hot water cannot be supplied when the general hot water is supplied by opening the hot water tap after the fixed amount of hot water is supplied.

According to the second aspect of the present invention, the second notification control for activating the notification means such as a notification buzzer is executed as the hot water plug closing forgetting prevention control, and again.
Since the notification that the predetermined amount of hot water supply is completed is made, the user is compared with the case where only the notification control for activating the notification means is performed at the time when the predetermined amount of hot water supply is completed or immediately before or immediately after that. The operation of closing the hot water tap can be strongly evoked.

Therefore, according to the present invention, it is possible to enhance the function of preventing the forgetting of the closing operation of the hot water tap and the switching operation to the general hot water supply control, which are necessary when the hot water supply of the predetermined amount is completed. It has become possible to suppress the occurrence of a situation in which hot water cannot be supplied when the general hot water is supplied by opening the hot water tap after the fixed amount of hot water is supplied.

According to the third aspect of the present invention, after the predetermined amount of hot water has been supplied, the notification by activating the notification means such as a notification buzzer is repeated with a certain time. It is possible to strongly urge the user to close the hot water supply plug, as compared with the case where only the notification control for activating the notification means is performed at the time when hot water supply is completed, or immediately before or immediately after that.

Therefore, according to the present invention, it is possible to enhance the function of preventing the forgetting of the closing operation of the hot water tap and the switching operation to the general hot water supply control, which are necessary when the hot water supply of the predetermined amount is completed. It has become possible to suppress the occurrence of a situation in which hot water cannot be supplied when the general hot water is supplied by opening the hot water tap after the fixed amount of hot water is supplied.

According to the present invention as set forth in claim 4, since the notification is stopped when the number of times of notification reaches the set number of times, conditions such as the absence of the user from the hot water supply amount management control to the general hot water supply control cannot be performed. In this case, useless notification can be avoided.

According to the fifth aspect of the present invention, after the notification control is performed, when the set time has elapsed, the switching operation to the general hot water supply control is not performed, and the disconnecting valve is in the flow cutoff state. The switching is switched to the flow-through state, and if there is flow in that state, it is judged that the hot water tap has not been closed and the flow is switched to the flow-off cut-off state. Not only the warning, but also the temporary water discharge from the hot water tap can notify that the hot water tap has been forgotten to be closed, and as a result, the notification control can be performed at the time when the hot water supply for the predetermined amount is finished, or immediately before or immediately after that. It is possible to strongly urge the user to perform the hot water plug closing operation, as compared with the case where only the operation is performed.

By the way, after the hot water supply of a predetermined amount is completed, in order to be ready for the general hot water supply, the operation of closing the hot water tap and
It is necessary to perform two operations including a switching operation to the general hot water supply control, and even if the hot water tap is closed, the general hot water supply cannot be performed unless the switching operation to the general hot water supply control is performed.

Focusing on the above points, when switching to the open state of the intermittent valve, if there is no flow, it is determined that the hot water tap has been closed, and the hot water supply amount control hot water supply control is changed to general hot water supply control. Since the switching is automatically done, the general hot water supply can be performed by closing the hot water tap.

Therefore, according to the present invention, it is possible to enhance the function of preventing the forgetting of the closing operation of the hot water tap, which is necessary when the hot water supply for the predetermined amount is completed, and it is certain that the hot water tap will not be closed. With the synergistic effect of being able to switch to the general hot water supply control, it has become possible to suppress the occurrence of the hot water incapability situation when the general hot water is supplied by opening the hot water tap after supplying a predetermined amount of hot water.

According to the sixth aspect of the present invention, after the notification control is performed, when the set time elapses, the switching control operation is not switched to the general hot water supply control, and the disconnect valve is in the flow cutoff state. , Switch the on / off valve to the flowing state,
If there is flow in that state, it is determined that the hot water tap has not been closed, and the interrupt valve is switched to the flow cutoff state.If such a cutoff valve is in the flow cutoff state, the cutoff valve is turned on. Since switching to the flow-through state and switching to the flow-cutting-off state when there is flow in this state is repeated over a period of time, not only the notification by activating the notification means, but also the hot water tap The fact that the hot water tap is forgotten to be closed can also be notified by the fact that the temporary water discharge from the hot water is repeated after a certain period of time. It is possible to strongly urge the user to perform the hot-water-plug closing operation, as compared with the case of performing.

Moreover, when the on / off valve is switched to the flow-through state, if there is no flow, it is determined that the hot-water tap is being closed, and the hot-water supply amount control hot-water supply control is automatically switched to the general hot-water supply control. Therefore, the general hot water supply can be performed by closing the hot water tap.

Therefore, according to the present invention, it is possible to enhance the function of preventing the forgetting of the closing operation of the hot water tap, which is necessary when the hot water supply for the predetermined amount is completed, and it is certain that the hot water tap is not forgotten to be closed. With the synergistic effect of being able to switch to the general hot water supply control, it has become possible to suppress the occurrence of the hot water incapability situation when the general hot water is supplied by opening the hot water tap after supplying a predetermined amount of hot water.

According to the seventh aspect of the present invention, when the number of switching of the intermittent valve to the flow cutoff state reaches the set number of times, the execution of the valve control is repeatedly stopped. It is possible to avoid unnecessary switching of the on / off valve in the case where the switching operation from the hot water supply amount management control to the general hot water supply control cannot be performed.

According to the eighth aspect of the present invention, since the disconnecting valve is switched to the flow cutoff state to activate the notification means to notify that the hot water supply tap is open, the predetermined amount is set. It is possible to further strongly urge the user to close the hot water supply plug, as compared with the case where only the notification control for activating the notification means is performed at the time when hot water supply is completed, or immediately before or immediately after that.

Therefore, according to the present invention, the function of preventing the forgetting of the closing operation of the hot water tap, which is necessary when the hot water supply of the predetermined amount is completed, can be further enhanced and the hot water supply of the predetermined amount is performed. It has become possible to suppress the occurrence of a situation in which hot water cannot be supplied when general hot water is supplied with the hot water tap opened later.

According to the ninth aspect of the present invention, since the hot water tap is a hot water tap for the bathtub, the hot water tap for the bathtub is used to perform cumulative hot water supply to the bathtub, thereby automatically filling the bathtub with a predetermined amount. It can be performed. Moreover, since a general hot water tap is provided in addition to the hot water tap for the bathtub,
General hot water can be supplied to multiple locations with a single water heater such as a bathtub and washroom.

As a result, according to the present invention, the convenience can be enhanced by the synergistic effect of being able to automatically fill the bathtub with a plurality of hot water.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG.
It is composed of a water heater A, a control unit H that controls the operation of the water heater A, and an operation unit R.

The water heater A comprises a combustion chamber 1, a burner 2 provided inside the combustion chamber 1, a heat exchanger 3 for heating water by the burner 2, and an air for combustion in the burner 2. And a flame plug 6 for detecting ignition, a fan 4 for discharging combustion exhaust gas of the burner 2 to the outside of the combustion chamber 1, a spark plug 5, and a flame rod 6. The burner 2 includes a first burner block 2a and a second burner block 2
b and the third burner block 2c, and each of the burner blocks 2a, 2b, 2c has three fuel gas supply passages 8 branched from the main fuel gas supply passage 7.
a, 8b, 8c are the three burner blocks 2a,
2b and 2c are connected so as to separately supply fuel gas. The three fuel gas supply paths 8a, 8
b and 8c are electromagnetic type disconnecting valves 9a, 9b and 9c for connecting and disconnecting the supply of the fuel gas, and the main fuel gas supply passage 7
Is provided with an electromagnetic proportional valve 10 with a governor and an electromagnetic safety valve 11 as well.

The heat exchanger 3 has a water supply passage 12 for supplying water for heating, and a hot water supply passage 13 for supplying hot water heated by the heat exchanger 3 to a manually operated water supply tap. Are connected in communication.

The faucet includes a bathtub faucet 15 for supplying hot water to the bathtub 14 and a general hot-water faucet 16 installed in a kitchen or a washroom, each of which is shown in the drawing. However, the number can be changed appropriately.

The water supply passage 12 is provided with a water quantity sensor 17 as a water quantity detecting means for detecting the water quantity Qx, and a water supply thermistor 18 for detecting a water supply temperature Ti.

In the hot water supply passage 13, a hot water supply thermistor 19 for detecting the hot water supply temperature Tx, and an on / off valve for adjusting the amount of water flow Qx to the heat exchanger 3 and for interrupting the flow of hot water to the hot water supply passage 13. An electromagnetic water proportional valve 20 and a mixing thermistor 21 are provided. Further, in the portion of the hot water supply passage 13 upstream of the water proportional valve 20, two bypass passages 22, 23 connected to the water supply passage 12 for communication are connected.
The bypass passages 22 and 23 have different inner diameters, and the large-diameter bypass passage 22 is provided with an electromagnetic large-diameter bypass valve 24, and the small-diameter bypass passage 23 is provided with an electromagnetic small-diameter bypass valve 25. Has been.

The operation section R is a controller connected to the control section H by wire or wirelessly, and has an operation switch 26 for instructing start and stop of operation of the water heater.
A temperature setting switch 27 as a target temperature setting means for setting the target hot water supply temperature Ts, a hot water amount setting switch 28 as a target hot water supply amount setting means for setting a target hot water supply amount, a notification buzzer 29 as a notification means, and a water filling switch 30, An instruction means 31 is provided for instructing execution of integrated hot water supply control, which will be described later, when the hot water filling switch 30 is turned on (on), and for executing general hot water supply control when turned off (off).
The water filling switch 30 is a return-type push-type switch, and each time the push operation is performed, the control unit H switches to the cut state and stores the stored state, and vice versa. If is stored, it is switched to the ON state and stored.

The control section H is operated by using 100 VAC as a power source, and the control section H includes hot water supply control means 32.

The hot water supply control means 32 basically switches the water proportional valve 20 to a circulation state based on the command information of the command means 31, that is, the general hot water supply control for opening the hot water to supply hot water. When the amount of hot water supplied to the hot water supply passage 13 reaches the target amount of hot water, the water proportional valve 20 is switched to the flow cutoff state,
In other words, it is an electric means for controlling the operations of the water heater A and the water proportional valve 20 in a freely switchable state to the integrated hot water supply control, which is an example of hot water supply amount hot water supply control for closing the hot water supply to stop hot water supply. .

More specifically, the operations of the water heater A and the water proportional valve 20 are controlled, and the water flow rate Qx detected by the water flow rate sensor 17 after the hot water filling switch 30 is turned on and operated.
The water supply temperature Ti detected by the water supply thermistor 18, the target hot water temperature Ts set by the temperature setting switch 27, and the burner 2 from the water supply passage 12 via the heat exchanger 3 Maximum amount of heat that can be supplied to water Gm
Based on, the target water flow rate Qm for making the hot water supply temperature Tx of the hot water supplied from the heat exchanger 3 to the target hot water supply temperature Ts

Qm = Gm / (Ts-Ti) (where Ts> Ti)

It has a function of adjusting the water proportional valve 20 so that the water flow rate Qx calculated by the equation (3) and detected by the water flow sensor 17 becomes equal to the target water flow rate Qm. In addition,
In the above formula, the maximum heat quantity Gm is the heat quantity that can be supplied to water through the heat exchanger 3 when the electromagnetic proportional valve 10 is adjusted to maximize the heat quantity generated by the burner 2, and the hot water supply control means is previously set. It is stored and held in 32.

The control operation of the hot water supply control means 32 will be described below with reference to FIG.

When power is supplied, after initialization processing is executed, if the operation switch 26 is on, hot water can be supplied, and if it is off, combustion is stopped.

The hot-water tap 1 for the bathtub in the state where the hot water can be supplied as described above.
5 and the general hot water supply tap 16 are opened to allow water to pass through the water supply passage 12, and when the water flow amount detected by the water amount sensor 17 reaches the ignition water amount, ventilation by the fan 4 is started and the safety valve 11 is opened. Intermittent valves 9a, 9b, 9c open,
At the same time, the electromagnetic proportional valve 10 is set to the slow ignition position, the burner 2 is ignited by the ignition plug 5, the ignition of the flame transfer is confirmed by the frame rod 6, and the combustion of the burner 2 is started.

At this time, the required heat quantity (fuel supply quantity) is calculated from the temperature set by the temperature setting switch 34 based on the water flow rate detected by the water quantity sensor 17 and the water temperature detected by the water supply thermistor 18, and a high heat quantity is required. For example, all of the intermittent valves 9a, 9b, 9c are opened to burn the three burner blocks 2a, 2b, 2c, and if only a small amount of heat is required, only the intermittent valve 9a is opened to open the first burner block. 2a
If only an intermediate amount of heat is burnt, only the intermittent valves 9a, 9a
The valve b is opened to burn the first burner block 2a and the second burner block 2b.

At the same time, when the temperature set by the temperature setting switch 27 is high, the large diameter bypass valve 24 is closed and only the small diameter bypass valve 25 is opened. When the set temperature is low, the large diameter bypass valve 24 is opened. The bypass valve 24 and the small diameter bypass valve 25 are opened, and in the case of an intermediate temperature, only the large diameter bypass valve 24 is opened.

In this way, the water from the water supply channel 1 is partially heated by the heat exchanger 3 and then the bypass channel 2 is used.
Hot water is supplied to the hot water supply passage 13 after being mixed with the water from 2, 23.

At this time, the hot water supply control means 32 calculates the required fuel supply amount from the set temperature based on the water amount detected by the water amount sensor 17 and the temperature detected by the water supply thermistor 18, and determines the opening degree of the electromagnetic proportional valve 10. The rotation speed of the fan 4 is set to a predetermined rotation speed while adjusting.

After that, the opening degree of the electromagnetic proportional valve 10 and the rotation speed of the fan 4 are finely adjusted so that the temperature detected by the mixing thermistor 21 becomes the set temperature, and the three burner blocks 2a, 2b, 2c. If the temperature detected by the mixing thermistor 21 does not reach the set temperature even if all of the above are burned to the maximum, the water proportional valve 20 is throttled so as to reach the set temperature.

In the above control, the water filling switch 30
When the bathtub hot water supply tap 15 and the general hot water supply tap 16 are opened while the switch is turned off (OFF), normal normal hot water supply control is executed. That is, the fuel supply amount Ip to the burner 2 is adjusted by adjusting the opening of the electromagnetic proportional valve 10 so that the hot water supply temperature Tx detected by the mixing thermistor 21 becomes the target hot water supply temperature Ts set by the temperature setting switch 27.
And the number of rotations of the fan 4 is controlled by the fuel supply amount I
It is controlled so that the rotational speed is preset for p. Then, the target water flow rate Qm is calculated based on the above formula, and the water proportional valve 20 is adjusted so that the water flow rate Qx detected by the water amount sensor 17 is equal to the target water flow rate Qm, and hot water supply at the target hot water supply temperature Ts is performed. When the bath hot water tap 15 and the general hot water tap 16 are closed and the detected water flow rate Qx becomes equal to or less than the ignition water quantity, the combustion of the burner 2 is stopped. It should be noted that whether or not the detected water flow rate Qx and the target water flow rate Qm are equal to each other is determined by whether the difference between the two is equal to or less than a predetermined value.

On the other hand, when the hot water filling switch 30 is turned on and the bathtub hot water tap 15 is opened, the integrated hot water supply control for supplying a predetermined amount of hot water to the bathtub 14 is executed. That is, hot water supply at the target hot water supply temperature Ts set by the temperature setting switch 27 is executed by the same operation as the general hot water supply control described above. In this integrated hot water supply control, the water flow rate Qx detected by the water amount sensor 17 is set. When the integrated flow rate (hot water supply amount) reaches the target hot water supply amount set by the hot water amount setting switch 28, the notification buzzer 29 sounds to notify that fact. The sounding of the alarm buzzer 29 normally causes the hot water supply tap 15 for the bathtub to be closed. However, even if the hot water tap is forgotten to be closed, the water proportional valve 20 is closed and combustion is stopped. The hot water is never supplied to.

Next, the control for preventing forgetting to close the bathtub hot water tap 15 is executed. That is, as shown in FIGS. 3 and 4, after the hot water supply is stopped and the set time T0 elapses, if the water filling switch 30 is not turned off and remains in the entering state, after the alarm buzzer 29 is once sounded. When the water proportional valve 20 is closed every time the first set time T1 elapses, that is, when the water filling switch 30 is in the on state, the repeated notification control for sounding the notification buzzer 29 forgets to close the hot water supply plug. It is executed as prevention control. The execution of the repeated notification control is stopped when the number of ringing N of the notification buzzer 29 reaches the set number N0 without turning off the water filling switch 30. Then, the water proportional valve 20 is opened by turning off the water filling switch 30 during execution of the repeated notification control and after the execution of the repeated notification control is stopped. At that time,
When the hot water supply tap 15 for the bathtub is closed, there is no flow detection by the water amount sensor 17, and the general hot water supply control described above is executed. On the other hand, if the bathtub hot-water tap 15 is left open due to forgetting to close it, almost the same amount of water as in the case of water filling at the previous time flows through the water supply passage 12, and the water amount sensor 17 detects this flow of water. Therefore, if the water flow sensor 17 detects the water flow immediately after the water filling switch 30 is turned off,
When it is determined that the hot water supply plug 15 for bathtub has not been closed, execution of the general hot water supply control is stopped, the water proportional valve 20 is closed again, and unnecessary hot water supply to the bathtub 14 is avoided.
The notification buzzer 29 is sounded again to notify that the bathtub hot water tap 15 has not been closed. The set time T0 and the first
Examples of real-valued values of the set time T1 include 3 minutes, 4 minutes, and 5 minutes.

[Other Embodiment] (1) In the above embodiment, the buzzer informs that the water filling switch 30 is not turned off and the intermittent valve 20 is closed every time the first set time T1 elapses. The repetitive notification control for ringing 29 is executed as the hot water plug closing forgetting prevention control. However, when the set time T0 elapses, the intermittent valve 2
When 0 is in the valve closed state, the notification control that only activates the notification buzzer 29 may be executed as the hot water plug closing forgetting prevention control. That is, the second notification control that does not perform the step surrounded by the chain double-dashed line in FIG. 4 is executed as the hot water plug closing forgetting prevention control.

(2) In the above embodiment, the notification buzzer 2
When the number N of ringing of 9 reaches the set number N0, the execution of the repetitive control is stopped, but the execution of the repetitive notification control is continued until the water filling switch 30 is turned off and the intermittent valve 20 is opened. You can

(3) In the above embodiment, the repeated notification control is executed as the hot water supply plug closing forgetting prevention control. However, as described below, the repeated valve control is executed as the hot water supply plug closing forgetting prevention control. May be. That is, as shown in FIG. 5 and FIG.
If the water filling switch 30 is not turned off and remains in the input state until 0 has elapsed, the water proportional valve 20 is opened, and when the water amount sensor 17 detects the flow of water in that state, hot water supply for the bathtub is performed. It is determined that the plug 15 has been forgotten to be closed, and the water proportional valve 20 is closed so as to prevent the leakage of useless water, and the notification buzzer 29 is sounded to notify that effect, and then the second setting is performed. Each time the time T2 elapses, if the water proportional valve 20 is closed, that is, the water filling switch 3
When 0 is in the on state, the water proportional valve 20 is opened, and when the water amount sensor 17 detects the flow of water in that state, it is determined that the hot water tap 15 for the bathtub will be forgotten to be closed, and unnecessary water leakage will occur. The water proportional valve 20 is closed so as to prevent it, and the notification buzzer 29 is rung to repeatedly execute the valve control to notify the fact, and the number of times the buzzer sounds without turning off the water filling switch 30, that is, When the number N of times of closing the water proportional valve 20 reaches the set number N0, the execution of the repeated valve control is stopped. On the other hand, if the water quantity sensor 17 does not detect the flow of water when the water proportional valve 20 is opened, it is determined that the hot water tap 15 for the bathtub is being closed and the water filling switch 3
Cut 0. Then, the hot water filling switch 30 is turned off during the execution of the repeated valve control, so that the general hot water supply control is executed. Further, as described in the above embodiment, the water proportional valve 20 is opened by turning off the water filling switch 30 during the execution of the repeated valve control and after the execution of the repeated valve control is stopped. At that time, the hot water tap for bathtub 15
When the water is closed, the water flow sensor 17 does not detect the flow, and the general hot water supply control described above is executed. However, if the hot water supply tap 15 for the bathtub is left open due to forgetting to close it, The same amount of water flows through the water supply passage 12 and the water amount sensor 17 detects it. Immediately after the water filling switch 30 is turned off, the water amount sensor 17 detects the water flow. When it is determined that the hot water supply plug 15 for bathtub has not been closed, the execution of the general hot water supply control is stopped, the water proportional valve 20 is closed again, and unnecessary hot water supply to the bathtub 14 is avoided and the notification buzzer 29 Is sounded again to notify that the bathtub hot water tap 15 has not been closed.

(4) In the above-mentioned other embodiment (3), the valve control is repeatedly executed as the control to prevent forgetting to close the hot water supply plug. However, the hot water filling switch 30 is operated until the set time T0 elapses from the hot water supply stop. If it is not turned off and remains in the entry state, the water proportional valve 20 is opened, and if the water amount sensor 17 does not detect the flow of water in that state, the bathtub hot water tap 1
It is judged that 5 is operated to be closed, and the water filling switch 30
On the other hand, when the flow is detected, it is judged that the bathtub hot water tap 15 has been forgotten to be closed, and the water proportional valve 20 is closed so as to prevent the leakage of useless water.
The valve control for ringing 9 to notify that effect may be executed as the hot water plug closing forgetting prevention control. That is,
The valve control that does not perform the step surrounded by the chain double-dashed line in FIG. 6 is executed as the hot water plug closing forgetting prevention control.

(5) In the above-mentioned other embodiment (3), the execution of the valve control is repeatedly stopped when the number N of times of closing and closing the valve 20 reaches the set number N0.
The valve control may be repeatedly executed until 0 is turned off and the on-off valve 20 is opened.

(6) In the above embodiment, the command means 31
As an example, the means for instructing the execution of the integrated hot water supply control by the operation of turning on the water filling switch 30 and the execution of the general hot water supply control by the operation of turning off the water filling switch 30 have been described.
A means for instructing execution of integrated hot water supply control by turning on the hot water filling switch 30 and commanding execution of general hot water supply control by turning on the hot water filling release switch may be used.

(7) In the above embodiment, the water amount sensor 1
Although the integrated value of the amount of water passing by 7 is set as the hot water supply amount, when the hot water supply destination is a bathtub or the like, the water level may be set as the hot water supply amount.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an entire water heater showing an embodiment.

FIG. 2 is a flowchart of a control operation showing an embodiment.

FIG. 3 is a flowchart of a control operation showing an embodiment.

FIG. 4 is a flowchart of a control operation showing an embodiment.

FIG. 5 is a flowchart of a control operation showing another embodiment.

FIG. 6 is a flowchart of a control operation showing another embodiment.

[Explanation of symbols]

 A hot water supply device 12 water supply passage 13 hot water supply passage 15 hot water supply tap 16 general hot water supply tap 20 interrupting valve 31 command means 32 hot water supply control means

Claims (9)

[Claims] 1. A water heater (A) for heating water supplied from a water supply channel (12) and a hot water supply channel for guiding hot water heated by the water heater (A) to a manually operated hot water supply tap (15). (13)
And an electrically operated disconnecting valve (20) for connecting and disconnecting the flow of hot water to the hot water supply passage (13). Based on the command information of the command means (31), the disconnecting valve (20) is connected. General hot water supply control for switching to the flowing state to supply hot water, and the hot water supply passage (1
When the hot water supply amount to 3) reaches the target hot water supply amount, the intermittent valve (2
0) A hot water supply control means (32) for controlling the operation of the hot water supply device (A) and the intermittent valve (20) in a freely switchable state to a hot water supply amount hot water supply control in which the hot water supply is stopped by switching to the flow cutoff state. A hot water supply device provided with an informing means (2
9) is provided to execute the notification control for temporarily activating the notification means (29) at or immediately before or immediately after the hot water supply stop in the hot water supply amount management hot water supply control, and the set time (T0) has elapsed from the hot water supply stop. A hot water supply device in which the hot water supply control means (32) is configured so as to execute the control to prevent forgetting to close the hot water supply plug if the on-off valve (20) is in the flow cutoff state at the time. 2. A second means for operating the notification means (29)
The hot water supply apparatus according to claim 1, wherein the hot water supply control means (32) is configured to execute a notification control as a control for preventing the forgetting to close the hot water supply plug. 3. The intermittent valve (2) is activated every time a first set time (T1) elapses after the alarm means (29) is once actuated.
The hot water supply control means (32) is configured so as to execute repetitive notification control for activating the notification means (29) when 0) is in the flow cutoff state as hot water plug closing forgetting prevention control. Water heater. 4. The hot water supply control means (3) so as to stop the execution of the repeated notification control when the number of times of operation of the notification means (29) by the repeated notification control reaches a set number.
2. The hot water supply device according to claim 3, which constitutes 2). 5. The switching valve (20) is switched to a flow-through state, and when a flow is detected in that state, the cut-off valve (20) is switched to a flow-blocking state, while a flow is not detected in general. The hot water supply apparatus according to claim 1, wherein the hot water supply control means (32) is configured to execute valve control for switching to hot water supply control as the hot water plug closing forgetting prevention control. 6. The on / off valve (20) is switched to a flow-through state, and when flow is detected in that state, the cut-off valve (20) is switched to a flow-off state, and then a second set time (T2) is set. ) Has elapsed, when the intermittent valve (20) is in the flow cutoff state, the intermittent valve (20) is switched to the flowing state, and when the flow is detected in that state, the intermittent valve (20) is turned on. Repeated valve control is performed as the hot-water-plug closing forgetting prevention control while switching to the general-purpose hot water shut-off state and switching to the general hot-water supply control if the flow is not detected in the state where the intermittent valve (20) is switched to the hot-flow state. The hot water supply apparatus according to claim 1, wherein the hot water supply control means (32) is provided in the. 7. An intermittent valve (2
7. The hot water supply apparatus according to claim 6, wherein the hot water supply control means (32) is configured to stop the execution of the repeated valve control when the number of times 0) is switched to the flow cutoff state reaches a set number. 8. The hot water supply control means (32) is configured to activate the notification means (29) every time the on / off valve (20) is switched to a flow cutoff state. , 6 or 7 hot water supply apparatus. 9. A bathtub (1) as the hot-water tap (15)
4. A hot-water bath tap for supplying hot water is provided in 4), and a general hot-water tap (16) different from this hot-water tap (15) is connected to the hot water supply passage (13). 3, 4,
Hot water supply device according to 5, 6, 7 or 8.