JPH11294858A - Bath hot water supplier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bath hot water supplier capable of putting the water filling to a bathtub in desired condition, making use of the function that the hot water supplier possesses. SOLUTION: This is a bath hot water supplier which is equipped with a control means H which executes the hot water filling control of heating the water from a water supply path 1 with a heating means 4 and 7, based on hot water filling command, and supplying it to hot water filling paths 3, 22, 23, and 24, and also stopping the supply of hot water when the hot water filling condition of a bathtub 5 comes in set condition, and the control means H executes the water filling control of supplying the bathtub 5 with the water from the water path 1 via hot water filling paths 3, 22, 23, and 24 without heating it, based on P water filling command, and also stopping the water supply when the water filling condition of the bathtub 5 comes in set condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for heating water from a water supply channel by a heating means and supplying the water to the water filling channel based on a water filling command. The present invention relates to a bath water heater provided with control means for executing hot water filling control for stopping hot water supply.

[0002]

2. Description of the Related Art In such a bath water heater,
Conventionally, even though the bathtub can be filled with water, it is impossible to fill the bathtub with water.For example, the control means for performing the filling control is switched to an uncontrollable operation stop state, and the filling command is issued. When a hot water filling command is issued by a switch, only an error is displayed, and no water is filled in the bathtub. Therefore, for example, when supplying water to the bathtub for running water in summer or playing with children in the water, the fact is that the water is supplied to the bathtub by opening and closing a curan provided in the water pipe. .

[0003]

However, in the case where the water is filled in the bathtub by opening and closing operation of a curan or the like, if the operation of closing the curan or the like is forgotten, the water level becomes higher than a desired water level, and further, the water from the bathtub is lost. There was a problem that overflowed.

The present invention has been made in view of such a point, and an object of the present invention is to make it easy to fill a bathtub with water by using a function provided in a bath water heater. It is to provide a possible bath water heater.

[0005]

According to the first aspect of the present invention, there is provided a control for executing a filling control for heating water from a water supply channel and supplying hot water to a bathtub. The means is configured to supply water to the bathtub without heating the water from the water supply channel based on the water filling command, and to execute water filling control for stopping the water supply when the water filling state of the bath tub is set. Have been. Therefore, at the time of filling the bathtub, when the filling state is set, it is possible to execute the filling of the bathtub by directly using the execution function of the filling control of stopping the supply of the hot water,
There is no danger that water will overflow from the bathtub, and it is possible to fill the bath with water according to the setting, and it is possible to generalize the bath water heater.

According to the second aspect of the present invention, there is provided a water level detecting means for detecting a water level in the bathtub, and a water level setting means for setting the water level in the bathtub. When the water level detected by the detection means reaches the water level set by the water level setting means, the supply of hot water is stopped, and in water filling control, when the water level detected by the water level detection means reaches the water level set by the water level setting means, the water supply is stopped. Is configured. Therefore, for example, compared to a control in which the amount of hot water supplied to the bathtub is controlled to be a set amount based on the integrated amount by the flow sensor, hot water can be reliably supplied to the set water level, and Water filling and bathing in the bath tub can be performed using the same water level detection means and water level setting means, so that water filling and water filling of a desired water level are performed while reducing costs by combining use of water level detection means and the like. be able to.

According to the third aspect of the present invention, there is provided a supply hot water quantity detecting means for detecting an integrated supply hot water quantity to the bathtub, and the control means in the hot water filling control detects and integrates the supply hot water quantity detecting means. When the supplied hot water amount reaches the set amount, it is determined that the hot water condition has been set, and the supply of hot water is stopped.In the water filling control, when the integrated water supply amount detected by the supplied hot water amount detecting means reaches the set amount, the water filling is performed. It is configured such that the supply of water is stopped when the state becomes the set state. Therefore, in the hot water filling control and the water filling control, for example, by simply integrating the amount of water supplied from the water supply channel with a water amount sensor or the like, the integrated supply water amount for the bathtub can be detected, and the water level in the bathtub is detected. Then, compared to the control in which the detected water level is controlled to be the set water level, the control operation in the hot water filling control and the water filling control can be easily performed without performing the operation of detecting the water level of the bathtub. It is possible to fill the bathtub and fill the water using the same supply water amount detection means. And can be filled with water.

According to the fourth aspect of the present invention, the heating means heats the water from the water supply channel and supplies the water to the filling line, and heats the hot water supply heat exchanger. Since it is a so-called instantaneous water heater, which is composed of a burner, the device is smaller than a hot water storage tank water heater, and because it is popular for general household use,
Its utility value is great.

According to the fifth aspect of the present invention, the control means is provided with a filling command switch for commanding execution of filling control and a filling command switch for commanding execution of filling control. The hot water filling command and the water filling command can be easily switched by a switch operation.

According to the invention described in claim 6, there is provided an operation switch capable of switching the control means between a controllable operation state and an uncontrollable operation stop state.
When the operation switch is switched to the operation state, when filling is commanded by the filling command switch, filling control is executed, and when filling is commanded by the filling command switch, filling control is executed. Is configured. Therefore, in a state where the control means can be controlled, the hot water filling command and the water filling command can be appropriately switched by a switch operation, so that the hot water filling and the water filling can be easily commanded. In the case of the combination, it is possible to switch to the general hot water supply in a controllable state.

According to the seventh aspect of the present invention, an operation switch for switching between an operation state in which the filling control can be executed and an operation stop state in which the filling control cannot be executed, and a filling command switch for instructing execution of the filling control. Is provided, and when the operation switch is switched to the operation state, when the filling command is issued by the filling command switch, the control means executes the filling operation, and the operation switch is switched to the operation stop state. In this state, when the filling is commanded by the filling command switch, the filling control is executed. Therefore, it is possible to switch between the filling control and the filling control by appropriately switching the operation switch and the filling command switch, so that the filling command switch can be used to issue both the filling command and the filling command. Can be.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bath water heater according to the present invention will be described with reference to the drawings. As shown in FIG. 1, this bath water heater heats water from a water supply channel 1 connected to a general household water pipe, and uses hot water after heating as a hot water tap 2
A hot water supply heat exchanger 4 for supplying the hot water to the hot water supply path 3 provided with a water heater, and a reheating heat exchanger 6 for heating the hot water in the bathtub 5 and reheating the hot water. The heat exchanger 4 for hot water supply and the heat exchanger 6 for additional heating are configured to be heated by a single gas burner 7.

The heat exchanger 4 for hot water supply and the heat exchanger 6 for additional heating
The gas burner 7 for heating the gas is a multi-stage burner, and a gas supply path 8 for supplying fuel gas for general household is branched and connected to three systems, and a gas switching solenoid valve 9 is provided in each gas supply path 8. An electromagnetic gas proportional valve 1 for adjusting a fuel gas supply amount is provided in a gas supply passage 8 upstream of the branch point.
0, an intermittent valve 11 for intermittently supplying fuel gas, and the like. A combustion fan 12 for supplying combustion air to the gas burner 7 is also provided. An ignition igniter for performing an ignition operation for the gas burner 7 near the gas burner 7 detects whether the gas burner 7 is ignited. A frame rod and the like are provided.

The water supply channel 1 is provided with a water supply thermistor 13 for detecting a water supply temperature and a water amount sensor 14 for detecting a water supply amount. Further, the water supply channel 1 and the hot water supply channel 3 downstream of the water supply thermistor 13 and the water amount sensor 14 are connected via a water supply bypass passage 15 so as to bypass the hot water supply heat exchanger 4. Further, the hot water supply path 3 includes, in order from the upstream side, a hot water supply thermistor 16 for detecting the temperature of hot water from the hot water supply heat exchanger 4, a hot water quantity from the hot water supply heat exchanger 4 and a water quantity from the water supply bypass path 15. , A tapping thermistor 18 for detecting the temperature of hot and cold water mixed by the mixing valve 17, a water proportional valve 19 for adjusting the amount of hot water, and detecting interruption of general hot water supply. An interruption water amount sensor 20 is provided.

The hot water supply heat exchanger 4 is provided with a boiling prevention thermistor 21 for detecting the temperature of hot water in the hot water supply heat exchanger 4. Also, the mixing valve 17
Is provided at a connection point between the water supply bypass passage 15 and the hot water supply passage 3, and supplies hot water from the hot water supply passage 3 to the bathtub 5 in the hot water supply passage 3 between the water proportional valve 19 and the interruption water amount sensor 20. The hot and cold water supply path 22 for a bath is branched and connected.
That is, the hot water supply path 3, the hot and cold water supply path 22, and the bathtub return path 2
3. The hot water path is constituted by the bathtub going path 24.

A bathtub return path 23 and a bathtub outgoing path 24 from the bathtub 5 are connected to the additional heat exchanger 6, and the bathtub return path 23 and the bathtub outgoing path 24 are connected to a bath adapter 25.
Is connected to the bath 5. By driving the circulation pump 26 for additional heating provided in the return path 23 for the bathtub, the hot water in the bathtub 5 is circulated through the return path 23 for the bathtub and the forward path 24 for the bathtub. It is configured to reheat the hot water.

The bathtub return path 23 includes, in order from the upstream side, a water level sensor 27 as a water level detecting means for detecting a water level in the bathtub 5 by detecting pressure, a return thermistor 28 for the bathtub, and a bathtub. An electromagnetic bath two-way valve 29 for opening and closing the return path 23, a reheating pump 26 for circulating hot and cold water, and a water flow switch 30 are provided. A mister 31 is provided;

The bath hot water supply passage 22 is connected to a bathtub return passage 23 between the additional heating circulation pump 26 and the water flow switch 30. The hot water supply path 22 includes a hot water filling electromagnetic valve 32 that opens and closes the hot water supply path 22 from the upstream side,
A hot water check valve 33 is provided. In the hot water supply passage 22 between the hot water filling electromagnetic valve 32 and the hot water check valve 33, an air layer forming hopper 34 communicating with the hot water supply passage 22 is interposed. The air layer forming hopper 34 is provided with a drainage path 35 for draining hot water and an electromagnetic drainage valve 36 for opening and closing the drainage path 35. It is connected to the return path 23 for the bathtub between the reheating pump 26 and the circulation pump 26.

The control unit H as a control means for controlling the operation of the bath water heater includes a microcomputer and is configured to be able to communicate with a remote controller R. The remote controller R includes an operation switch 37 for switching between a controllable operation state and an uncontrollable operation stop state, a filling command switch 38 for commanding a filling operation, a reheating command switch 39 for commanding a reheating operation, A water filling command switch 40 for instructing a water filling operation, a temperature setting switch 41 for setting a general hot water supply temperature or a hot water supply temperature, a water level setting switch 42 as a water level setting means for setting a set water level for the hot water filling operation or the water filling operation, and the like. It is provided with. It should be noted that one or more remote controllers as described above may be provided.

The control unit H supplies hot water at a set temperature to the hot water tap 2.
A hot water supply operation for executing a general hot water supply control for supplying hot water to the bathtub and a hot water supply control for executing a hot water supply control for supplying hot water to the bathtub 5 based on the hot water supply command until the hot water filling state of the bathtub 5 becomes a set state. The operation, the water filling operation for executing water filling control for supplying water to the bath tub 5 until the water filling state of the bath tub 5 becomes the set state, and the reheating control so that the temperature of the hot water in the bath tub 5 becomes the set temperature. Each of the reheating operations to be performed is configured to be performed.

The operation of each of the above-described operations will be schematically described with reference to the flowchart of FIG. 2. First, when the operation switch 37 is turned on, an operation in which each control such as a general hot water supply control and a hot water filling control can be controlled. State. When the hot water tap 2 is opened and there is a command for a general hot water supply operation, the general hot water supply control is executed, and when the hot water filling command switch 38 or the water filling command switch 40 is turned on and the bath control is commanded, When the filling command switch 38 is turned on, the filling control is executed and the filling command switch 40 is turned on.
, The water filling control is executed. Further, when the reheating command switch 39 is turned on and a command for the reheating operation is issued, the reheating control is executed.

The above-described operations will be described in detail. In the general hot water supply operation, when the hot water tap 2 is opened and the amount of water detected by the water amount sensor 14 exceeds a predetermined amount, the combustion fan 12 is driven, and then the switching solenoid valve is switched. By switching the valve 9 appropriately, the intermittent valve 11 is opened, the opening of the gas proportional valve 10 is adjusted, and the gas burner 7 is ignited by the igniter. When the gas burner 7 is ignited, the switching solenoid valve 9 is switched based on the temperature set by the temperature setting switch 41 of the remote controller R, the detected water temperature by the water supply thermistor 13, the detected water amount by the water amount sensor 14, and the like, The so-called feedforward control is executed so that the opening of the valve 10 is adjusted and the opening of the mixing valve 17 is also adjusted so that the hot water supply temperature becomes the set temperature.

In addition to the feedforward control, the opening degree of the gas proportional valve 10 is finely adjusted based on the deviation between the hot water supply temperature set by the temperature setting switch 41 of the remote controller R and the hot water temperature detected by the tapping thermistor 18. Feedback control is executed, and the temperature setting switch 4
The hot water at the temperature set by 1 is supplied from the hot water tap 2. Then, when the hot water tap 2 is closed and the water amount sensor 14 does not detect a predetermined amount of water flow, the intermittent valve 11 and the gas proportional valve 10 are closed to stop the combustion of the gas burner 7, and after a certain period of time the combustion The fan 12 is also stopped to end the general hot water supply operation.

When the water filling command switch 38 of the remote controller R is turned on, the water filling electromagnetic valve 32 is opened, and when the water amount sensor 14 detects a water flow of a predetermined amount or more,
The gas burner 7 is ignited in the same manner as in the general hot water supply operation described above,
Hot water at a set temperature is supplied to the bathtub 5 by the feedforward control and the feedback control. That is, by adjusting the opening of the gas proportional valve 10 and the mixing valve 17, the water from the water supply passage 1 is heated by the hot water supply heat exchanger 4, and the heated water is mixed with the water from the water supply bypass passage 15. Hot water at the temperature set by the temperature setting switch 41 is supplied to the bathtub return path 23 and the bathtub forward path 24 via the hot water supply path 22, and the bathtub is returned from both the bathtub return path 23 and the bathtub forward path 24. 5.

When a predetermined amount of hot and cold water is supplied to the bathtub 5, the recirculating pump 26 is operated to activate the bath two-way valve 2.
9 is closed, the water level in the bathtub 5 is detected by the water level sensor 27, and when the detected water level has reached the water level set by the water level setting switch 42, the hot water filling electromagnetic valve 32 is closed and the intermittent valve 1 is closed.
1 and the gas proportional valve 10 are closed to stop the combustion of the gas burner 7, and the combustion fan 12 is also stopped after a certain period of time. In this way, the water level of the bathtub 5 is appropriately detected,
Hot water is supplied to the bathtub 5 so that the water level in the bathtub 5 becomes the set water level. When the hot-water tap 2 is opened during the hot water filling operation, the interruption water amount sensor 20 detects the water flow, stops the hot water filling operation, and executes the general hot water supply operation. That is, the general hot water supply operation is executed with priority, and when the hot water tap 2 is closed, the hot water filling operation is restarted.

When the above filling operation is completed, the hot water in the hopper 34 is discharged to the bathtub return path 23 by opening the drain valve 36 for a fixed time. Then, the circulation pump 26 for additional heating is operated, and the hot water in the bathtub 5 and the hot water discharged from the hopper 34 are returned to the return path 23 for the bathtub and the forward path 24 for the bathtub.
If the hot water temperature detected by the return thermistor 28 has reached the set hot water temperature of the remote control R, the reheating pump 26 is stopped. The reheating operation is performed.

The reheating operation is automatically shifted to the reheating operation after the filling operation as described above is completed, or the reheating command switch 39 of the remote controller R is turned on. The hot water in the bathtub 5 is returned to the bathtub return path 2 by operation.
Heating water in the bathtub 5 by the additional heat exchanger 6 is performed while circulating the water through the bathtub going path 24 and the bathtub 3.

More specifically, when the gas burner 7 is not burning, the recirculation pump 26 is started to operate, and after the water flow switch 30 detects the water flow, the combustion fan 12 is driven. The solenoid valve 9 is appropriately switched to open the intermittent valve 11, the opening of the gas proportional valve 10 is adjusted, and the gas burner 7 is ignited by the igniter. Then, based on the detected hot water temperature of the outgoing thermistor 31, etc., the switching solenoid valve 9 is switched, the opening degree of the gas proportional valve 10 is adjusted, and the hot water in the bathtub 5 is heated by the additional heat exchanger 6. I do. Thereafter, when the detected hot water temperature of the return thermistor 28 reaches the hot water temperature set by the remote controller R, the gas proportional valve 10 and the intermittent valve 11
Is closed to stop the combustion of the gas burner 7, and after a certain period of time, the combustion fan 12 is also stopped.

In the water filling operation, when the water filling command switch 40 of the remote controller R is turned on, the water filling electromagnetic valve 32 is opened, and the water from the water supply channel 1 is supplied to the bathtub 5 without being heated. That is, when the operation switch 37 is in the ON state,
When the water filling command switch 40 is turned ON, the gas bar is not operated even if the water flow sensor 14 detects a water flow of a predetermined amount or more.
The combustion of the gas burner 7 is stopped without starting the combustion of the burner 7. Then, the water from the water supply channel 1 is supplied to the hot water supply channel 3 without being heated by the hot water supply heat exchanger 4, and this water is mixed with the water from the water supply bypass channel 15, and is mixed via the hot and cold water supply channel 22. The water is supplied to the bathtub return path 23 and the bathtub going path 24, and water is supplied to the bathtub 5 from both the bathtub return path 23 and the bathtub going path 24.

When a predetermined amount of water is supplied to the bathtub 5, the recirculating pump 26 is operated to activate the bath two-way valve 29.
Is closed, the water level sensor 27 detects the water level in the bathtub 5, and when the detected water level reaches the water level set by the water level setting switch 42, the hot water filling electromagnetic valve 32 is closed. In this manner, the water level of the bathtub 5 is appropriately detected, and water is supplied to the bathtub 5 so that the water level of the bathtub 5 becomes the set water level. When the hot water tap 2 is opened during the water filling operation as in the water filling operation, the interruption water amount sensor 20 detects the water flow, stops the water filling operation, and executes the general hot water supply operation. That is, the general hot water supply operation is executed with priority, and when the hot water tap 2 is closed, the water filling operation is restarted.

In this manner, the water is automatically supplied to the bathtub 5 to the set water level in a state where the combustion of the gas burner 7 is stopped. Water can be supplied, and in particular, a bathtub can be used as a substitute for running water or a pool in summer or the like, which is convenient.

[Other Embodiments] (1) In the above embodiment, the water level in the bathtub 5 is set to the set water level based on the detection result of the water level sensor 27 for detecting the water level in the bathtub 5. Instead of such a configuration, a configuration may be employed in which the amount of hot water supplied to the bathtub 5 is controlled based on the integrated hot water amount by the water amount sensor 14 without providing the water level sensor 27. . That is, the water amount sensor 14 in FIG.
It functions as a supplied hot water amount detecting means for detecting an integrated supplied hot water amount for the bathtub 5, and is configured to execute hot water filling control and water filling control based on the detection information of the water amount sensor 14.

In this alternative embodiment, only the filling operation for executing filling control and the filling operation for executing filling control in FIG. 1 of the above embodiment will be described. The description of the driving operation and other devices will be omitted by giving the same reference numerals. The operation of each operation such as a general hot water supply operation and a hot water filling operation is also the same as the description based on FIG.

More specifically, the filling operation for executing filling control is performed by the filling command switch 38 of the remote controller R.
Is turned on, the hot water filling electromagnetic valve 32 is opened, and when the water amount sensor 14 detects a water flow of a predetermined amount or more, the gas burner 7 is ignited, and hot water at a set temperature is supplied to the bathtub 5 by feedforward control and feedback control. Supplied. That is, the water from the water supply passage 1 is heated by the hot water supply heat exchanger 4 by adjusting the opening of the gas proportional valve 10 and the mixing valve 17,
The heated hot water is mixed with water from the water supply bypass passage 15, and hot water at a temperature set by the temperature setting switch 41 is supplied via the hot water supply passage 22 to the return path 23 for the bathtub and the forward path 2 for the bathtub.
4 and is supplied into the bathtub 5 from both the return path 23 for the bathtub and the forward path 24 for the bathtub.

Then, the accumulated amount of hot water supplied to the bathtub 5 after the hot water filling operation is executed is detected by the water amount sensor 14, and when the detected cumulative hot water amount reaches the set amount, the hot water filling electromagnetic valve 32 is closed. Then, the intermittent valve 11 and the gas proportional valve 10 are closed, the combustion of the gas burner 7 is stopped, and the combustion fan 12 is also stopped after a certain period of time. In this way,
A set amount of hot water is supplied to the bathtub 5. When the hot-water tap 2 is opened during the hot water filling operation, the interruption water amount sensor 20 detects the water flow, stops the hot water filling operation, and executes the general hot water supply operation. That is, the general hot water supply operation is executed with priority, and when the hot water tap 2 is closed, the hot water filling operation is restarted.

The water filling operation for executing the water filling control is performed by turning on the water filling command switch 40 of the remote controller R.
The hot water filling electromagnetic valve 32 is opened, and the water from the water supply channel 1 is supplied to the bathtub 5 without being heated. That is, when the operation switch 37 is ON and the water filling command switch 40 is
When the N operation is performed, even if the water amount sensor 14 detects a water flow of a predetermined amount or more, the combustion of the gas burner 7 is maintained without stopping the combustion of the gas burner 7. Then, the water from the water supply channel 1 is supplied to the hot water supply channel 3 without being heated by the hot water supply heat exchanger 4, and this water is mixed with the water from the water supply bypass channel 15, and is mixed via the hot and cold water supply channel 22. The water is supplied to the bathtub return path 23 and the bathtub going path 24, and water is supplied to the bathtub 5 from both the bathtub return path 23 and the bathtub going path 24.

Then, the accumulated amount of hot water supplied to the bathtub 5 after the hot water filling operation is performed is detected by the water amount sensor 14, and when the detected cumulative hot water amount reaches the set amount, the hot water filling electromagnetic valve 32 is closed. You. In this way, a set amount of water is supplied to the bathtub 5. In addition, like during hot water operation,
When the hot water tap 2 is opened during the water filling operation, the interrupted water flow sensor 2
0 detects the water flow, stops the water filling operation, and executes the general hot water supply operation. That is, the general hot water supply operation is executed with priority, and when the hot water tap 2 is closed, the water filling operation is restarted.

(2) In the above embodiment, the hot water supply heat exchanger 4 and the additional heating heat exchanger 6 are heated by a single gas burner 7 to supply water to the hot water tap 2 and the bathtub 5 for instantaneous water heating. Although it is a hot water supply type, it is a hot water storage tank type hot water supply device that stores hot water heated by the heating means in a tank or the like and supplies hot water from this tank. When filling the water, water is supplied to the bathtub 5 in a state of bypassing the hot water storage tank. You may comprise so that it may supply. Also,
When using the instantaneous water heater, the heat exchanger 4 for hot water supply and the heat exchanger 6 for additional heating are not heated by a single gas burner 7, but are heated by different gas burners. Good.

(3) In the above embodiment, the hot water supply path 3, the hot and cold water supply path 22, the bathtub return path 23, and the bathtub outgoing path 24
Although the hot water path is configured, the hot water supply path 2
2, without providing a return path 23 for the bathtub and a forward path 24 for the bathtub,
The hot water supply path 3 is configured as a hot water supply path, that is, configured as a bath hot water supply apparatus dedicated to bath hot water supply. In the hot water supply control and the water filling control, as in the above-described another embodiment (1), the integrated hot water supply by the water amount sensor 14 is used. Based on the amount of water, the amount of hot water supplied to bathtub 5 may be controlled so as to be a set amount.

In addition, in the hot water filling control,
When the hot water supply switch 2 is opened and the water amount detected by the water amount sensor 14 is equal to or more than a predetermined amount in a state where the hot water filling command switch 38 of the remote control R is ON, the hot water filling operation is executed, and the same as in the above embodiment. Then, the gas burner 7 is ignited to execute feedforward control and feedback control. Then, hot water at a temperature set by the temperature setting switch 41 is supplied from the hot-water tap 2 to the bathtub 5, and an integrated amount of hot water supplied to the bathtub 5 after the hot water filling operation is executed is detected by the water amount sensor 14. When the amount of water reaches the set amount, the water proportional valve 19 is closed and the supply of hot water to the bathtub 5 is stopped.

In the water filling control, when the water tap 2 is opened and the water amount detected by the water amount sensor 14 becomes a predetermined amount or more while the water filling command switch 40 of the remote controller R is turned ON, the water filling operation is executed. Similarly to the above embodiment, the water from the water supply channel 1 is supplied to the hot water supply channel 3 without being heated by the hot water supply heat exchanger 4. Then, water is supplied from the hot-water tap 2 to the bathtub 5, and the accumulated amount of hot water supplied to the bathtub 5 after the water filling operation is started is measured by the water amount sensor 14.
When the detected accumulated hot water amount reaches the set amount, the water proportional valve 19 is closed and the supply of water to the bathtub 5 is stopped. In addition, when it is adapted as a bath water heater dedicated to bath water supply as described above, without providing the water supply bypass passage 15,
The entire amount of water supplied through the water supply path 1 may be supplied to the hot water supply path 3 via the hot water supply heat exchanger.

When the water supply bypass 15 is provided when the bath water supply device is applied as a bath water supply device dedicated to bath water supply, the detected integrated water amount reaches a set amount based on the integrated water amount detected by the water amount sensor 14. When the supply of hot water to the bath 4 is stopped, the supply of hot water to the bathtub 5 may be stopped by closing the mixing valve 17.

(4) In the above embodiment, the remote control R is provided with the water filling command switch 40, and the operation switch 37 is turned on.
When the water filling command switch 40 is turned on, the water filling control for the bathtub 5 is executed.
When the operation switch 37 is turned OFF and the control means H is in an operation stop state where the filling control cannot be performed and the filling control command switch 38 is turned ON, the control means H You may comprise so that water filling control may be performed.

(5) In the above embodiment, the water level setting switch 42 capable of changing the water level set to the bathtub 5 is provided. However, the water level setting switch 42 is not provided, but the water level is set to a predetermined water level. Or water filling may be performed.

(6) In the above embodiment, the bath water heater is provided which also serves as a general hot water supply operation for supplying hot water to the hot water tap 2. However, as in the above-mentioned another embodiment (3), only the bathtub 5 is used. It is good also as a bath hot-water supply device for exclusive use of bath hot-water supply which does not also serve as a general hot-water supply operation. Further, the bath water heater for a bathtub may be configured to execute only the hot water filling operation and the water filling operation without executing the additional heating operation.

(7) In the above embodiment, when the bathtub 5 is filled with water, the water from the hot water supply heat exchanger 4 and the water from the water supply bypass path 15 are mixed, and the water is supplied through the hot water supply path 22. Although it is configured to supply the water to the bathtub 5, a water supply intermittent valve for intermittently supplying water to the water supply channel 1 downstream of the connection point between the water supply channel 1 and the water supply bypass channel 15 is provided. By closing the water supply intermittent valve or adjusting the opening of the mixing valve 17, the water from the water supply path 1 is supplied only to the water supply bypass path 15 without supplying the water to the hot water supply heat exchanger 4, The water in the bypass 15 may be supplied to the bathtub 5. By the way, the configuration in which the water from the water supply channel 1 is supplied only to the water supply bypass channel 15 to execute the water filling is different from that of the other embodiments (1) and (3) in which the water supply bypass channel 15 is provided. It is also possible to adapt to a hot water supply device.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a bath water heater.

FIG. 2 is a flowchart showing operation control.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Water supply path 3,22,23,24 Hot water path 4 Hot water supply heat exchanger as heating means 5 Bath tub 7 Burner as heating means 14 Supply hot water quantity detecting means 27 Water level detecting means 37 Operation switch 38 Hot filling command Switch 40 Water filling command switch 42 Water level setting means H Control means

Claims (7)

[Claims] 1. A method for heating water from a water supply channel by a heating means and supplying the water to the hot water route based on a hot water filling command.
A bath water heater provided with control means for executing hot water control for stopping hot water supply when the hot water state of the bathtub becomes a set state, wherein the control means performs the water supply based on a water filling command. It is configured to supply water to the bathtub through the hot water path without heating the water from the road, and to execute water filling control for stopping water supply when the water filling state of the bath tub is set. Bath water heater. 2. A water level detecting means for detecting a water level in the bathtub, and a water level setting means for setting a water level in the bathtub, wherein the control means detects the water level in the hot water filling control. When the water level reaches the water level set by the water level setting means, assuming that the hot water state has been set,
The supply of hot water is stopped, and in the water filling control, when the water level detected by the water level detecting means reaches the set water level set by the water level setting means, the water filling state becomes the set state.
The bath hot water supply apparatus according to claim 1, wherein the supply of water is stopped. 3. A supply hot water amount detecting means for detecting an integrated supply hot water amount to the bathtub, wherein the control means comprises:
In the hot water filling control, when the integrated water supply amount detected by the supplied hot water amount detecting means reaches a set amount, it is determined that the hot water state has been set, and the supply of hot water is stopped. The bath water heater according to claim 1, wherein when the integrated water supply amount detected by the supply water amount detection means reaches a set amount, the water filling state is set and the water supply is stopped. 4. The heating means comprises a hot water supply heat exchanger for heating water from the water supply path and supplying the water to the hot water supply path, and a burner for heating the hot water supply heat exchanger. The bath water heater according to any one of claims 1 to 3. 5. A water filling command switch for commanding execution of water filling control to the control means, and a water filling command switch for commanding execution of water filling control are provided.
The bath water heater according to any one of the above. 6. An operation switch capable of switching the control means between a controllable operation state and an uncontrollable operation stop state is provided, and the control means is configured to switch the operation state when the operation switch is switched to the operation state. 6. The water filling control is executed when the filling command is issued by the filling command switch, and the filling control is executed when the filling is commanded by the water filling command switch. Bath water heater. 7. An operation switch for switching between an operation state in which the filling control can be executed and an operation stop state in which the filling control cannot be executed,
A filling command switch for instructing execution of the filling control is provided, and the control means instructs the filling by the filling command switch when the operation switch is switched to an operation state. And when the operation switch is switched to the operation stop state, and when the filling command is issued by the filling command switch, the filling control is executed. 1 to
4. The bath water heater according to any one of the items 4.