JP2830901B2 - Hot water supply device for bathtub - Google Patents

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 for a bath tub, which can supply a predetermined amount of hot water to a bath tub, and more particularly, heats water from a water supply channel by burning a burner and supplies the water to the hot water channel. A water heater having a heat exchanger, a manually operated hot water tap for the bathtub connected to the hot water supply path for hot water supply to the bathtub, a hot water supply amount integrating means for integrating the amount of hot water supplied to the hot water supply path, and the hot water supply Hot water supply control means for controlling the water heater and operating the notifying means when the detected hot water supply amount by the hot water supply amount integrating means reaches the target hot water supply amount, and integration for instructing the hot water supply control means to start integration of the hot water supply amount. The present invention relates to a bathtub hot water supply device including hot water supply instruction means and notification release means for instructing release of notification by the notification means.

[0002]

2. Description of the Related Art Conventionally, as this kind of hot water supply device for a bathtub, for example, one disclosed in Japanese Patent Application Laid-Open No. 58-33052 is known. The bath tub hot water supply device disclosed in this publication supplies hot water to the bath tub by dropping it with a bath tub hot water tap. When a desired amount of hot water is supplied to the bath tub, the buzzer or a lamp informs the user of the notification. It is configured. Also, when the desired amount of hot water is supplied to the bathtub,
A hot water supply device configured to automatically stop and notify of hot water supply is also disclosed.

[0003]

However, in a configuration in which a buzzer or a lamp is used to notify the user, only the operation of the notification means is released, and the user may forget to close the essential hot water supply for the bathtub. Hot water, or in some cases,
There was also a risk that hot water would overflow from the bathtub. Also, in the configuration in which the hot water supply is automatically stopped, there is no problem if a person who is accustomed to using this hot water supply device, but for an unfamiliar person, the setting of the amount of hot water to be supplied does not always go properly. In some cases, it is often necessary to add more hot water after the stop of hot water supply, and in such a case, it is troublesome to reset the hot water supply device again. Further, even when the amount of hot water to be supplied is predetermined on the device side, sometimes it is desired to add hot water. In this case, too, the operation is also troublesome.

The present invention has been made to solve the above-mentioned conventional problems. The main object of the present invention is to forget to close a hot tub for a bathtub and to release only an operation of a notification means such as a buzzer or a lamp as much as possible. The object of the present invention is to prevent the hot water from being supplied to the bathtub more than necessary. Another object of the present invention is to make it possible to easily add hot water when the user wants to add hot water after stopping the hot water supply, without performing any troublesome operation.

[0005]

In order to achieve this object, a first characteristic configuration of a hot water supply device for a bathtub according to the present invention is as follows.
A water heater having a heat exchanger that heats water from the water supply channel by burning the burner and supplies the hot water to the hot water supply channel, and a manually operated hot water tap for a bathtub connected to the hot water supply channel to supply hot water to the bathtub;
Hot water supply amount integrating means for integrating the amount of hot water supplied to the hot water supply path, and hot water supply control means for controlling the hot water supply device and for operating the notifying means when the hot water supply amount detected by the hot water supply amount integrating means reaches the target hot water supply amount A bathtub hot water supply device comprising: integrated hot water supply instruction means for instructing the hot water supply control means to start integrating hot water supply amounts; and notification canceling means for instructing cancellation of notification by the notifying means. When the notification canceling means instructs the cancellation of the notification, when the circulation of the hot water to the hot water supply path is detected, the cancellation of the notification by the notification canceling means is stopped.

[0006] A second characteristic configuration is that the hot water supply control means includes:
When the detected hot water supply amount by the hot water supply amount integrating means reaches the target hot water supply amount, the integrated hot water supply control for reducing the hot water supply amount by the flow rate change valve for changing the flow rate of the hot water to the hot water supply path and opening the flow rate change valve to supply hot water. In addition to controlling the hot water supply to execute the general hot water supply control, a general hot water supply instruction means for instructing the hot water supply control means to start the general hot water supply control is provided, and the integrated hot water supply control means is provided by the integrated hot water supply instruction means. In that it is instructed to start.

A third characteristic configuration is that a target hot water supply amount setting means for changing and setting the target hot water supply amount is provided.

A fourth characteristic configuration is that the hot water supply control means includes:
The hot water supply device is configured to control the hot water supply temperature to be the target hot water supply temperature to be supplied to the hot water supply path, and is provided with target temperature setting means for changing and setting the target hot water supply temperature.

A fifth characteristic configuration is that the integrated hot water supply instruction means is a hot water switch for instructing hot water to the bathtub,
The general hot water supply instructing means is a hot water release switch for releasing a hot water filling instruction, and a general hot water tap different from a bathtub hot water tap is connected to the hot water supply path.

A sixth characteristic configuration is that water supply amount detecting means is provided in the water supply path, the water supply amount to the hot water supply path is detected by integrating the water supply amount detected by the water supply amount detection means, and the notification canceling means is provided by the notification canceling means. It is configured to detect the flow of hot and cold water to the hot water supply path when an instruction to cancel the notification is issued.

[0011]

According to the first characteristic configuration of the present invention, there is provided a hot water supply amount integrating means for integrating the amount of hot water supplied to the hot water supply path, and the detected hot water supply amount by the hot water supply integrating means becomes equal to the target hot water supply amount. Since the hot water supply control means activates the notification means, it is possible to know that a predetermined amount of hot water has been supplied to the bathtub. Then, after the predetermined amount of hot water is supplied, even if the notification canceling means only instructs the cancellation of the notification without closing the bathtub hot water tap, when the circulation of the hot water to the hot water supply path is detected, the notification canceling means However, since the cancellation of the notification is stopped, the notification means continues the notification as it is. Therefore, in order to cancel the notification, the bathtub hot-water tap must be closed, and the inconvenience due to forgetting to close the bathtub hot-water tap can be avoided as much as possible.

According to the second characteristic configuration, when the hot water supply amount detected by the hot water supply amount integrating means reaches the target hot water supply amount, the hot water supply is not completely stopped but the flow rate of the hot water supply to the hot water supply path is changed. Since the amount of hot water is reduced by the flow rate change valve, not only is it possible to prevent the hot water from immediately overflowing from the bathtub, but also if the target hot water supply amount is not appropriate and further hot water is to be added, the desired What is necessary is just to close the hot tub for a hot tub after waiting for the hot water volume to be consumed, and the troublesome operation like the above-mentioned conventional device becomes unnecessary. In addition, since general hot water supply control is also possible in addition to such integrated hot water supply control, general hot water supply from the same bathtub hot water tap is also possible by an instruction from the general hot water supply instruction means. It can be conveniently used by selectively using the control.

According to the third characteristic configuration, since the target hot water supply amount setting means for changing and setting the target hot water supply amount to be supplied to the hot water supply path is provided, unlike the one in which the target hot water supply amount is uniformly set, The user can freely determine the amount of hot water and use it conveniently, and if the set hot water amount is not appropriate and wants to add more hot water, it does not need the troublesome operation as described above, You can add hot water.

According to a fourth characteristic configuration, the hot water supply control means is configured to control the hot water supply so that the hot water supply temperature supplied to the hot water supply passage is set to the target hot water supply temperature, and the target hot water supply temperature is changed. Since the target temperature setting means to be set is provided, not only the hot water supply amount but also the hot water supply temperature can be freely set, and the device can be used more conveniently.

According to a fifth characteristic configuration, the integrated hot water supply instructing means is a hot water supply switch for instructing bath filling to the bathtub, and the general hot water supply instruction means is a hot water release switch for releasing the hot water filling instruction. Yes, and because a common hot water tap different from the bathtub hot water tap is connected to the hot water supply path,
By operating the hot water switch, a desired amount of hot water can be supplied to the bathtub, and at the same time, hot water having a temperature suitable for bathing can be supplied as described above. General hot water supply is also possible.

According to a sixth aspect of the present invention, a water flow detecting means is provided in the water supply passage, and the amount of hot water supplied to the hot water supply passage is detected by integrating the water flow detected by the water flow detecting means, and the notification is canceled. Means for detecting the flow of the hot water to the hot water supply path when the cancellation of the notification is instructed by the means, so that the detection of the hot water supply amount to the bathtub and the hot water supply to the hot water supply path by one water flow detecting means. It is possible to perform both actions of detecting the circulation, and furthermore, it is possible to detect whether or not a sufficient amount of water for ignition is supplied to the heat exchanger of the water heater by the water flow detecting means, By causing one water flow detecting means to perform various functions, it is possible to reduce costs by reducing the number of parts.

[0017]

As described above in detail, according to the first characteristic configuration, it is possible to know that a predetermined amount of hot water has been supplied to the bathtub by operating the notification means, and thereafter, to supply hot water for the bathtub. Even if you try to cancel the notification without closing the tap,
The notification means will continue the notification as it is,
The bathtub hot-water tap must be closed, and inconvenience due to forgetting to close the bathtub hot-water tap can be avoided as much as possible.

According to the second characteristic configuration, when the detected hot water supply amount reaches the target hot water supply amount, the hot water supply amount is merely reduced without stopping the hot water supply. It is only necessary to wait until the bathtub hot-water tap is closed, eliminating the need for troublesome operation.In addition, general hot water can be supplied from this hot-water tap for the bathtub, and it is convenient to use integrated hot water supply control and general hot water supply control separately. Can be used.

According to the third characteristic configuration, the target hot water supply amount can be freely changed and set by the target hot water supply amount setting means. Unlike the uniformly set hot water supply amount, the target hot water supply amount can be used conveniently. When adding hot water, hot water can be easily added without the need for bothersome operation as described above.

According to the fourth characteristic configuration, not only the hot water supply amount but also the hot water supply temperature can be freely set by the target temperature setting means, and the device can be used more conveniently.

According to the fifth characteristic configuration, a desired amount of hot water can be supplied to the bathtub at a desired temperature, and general hot water can be supplied to a kitchen or a washroom by a general hot water tap.

According to the sixth characteristic configuration, one water flow detecting means performs both the operation of detecting the amount of hot water supplied to the bathtub and the detection of the flow of hot water to the hot water supply path, and further ignites the heat exchanger. It is also possible to detect whether or not a sufficient amount of water has been supplied, and it is possible to reduce costs by reducing the number of parts by making one water flow detecting means perform various functions.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hot water supply apparatus for a bathtub according to the present invention will be described with reference to the drawings. FIG. 1 schematically shows the entire hot water supply apparatus. The hot water supply apparatus includes a water heater A, a control unit H for controlling the operation of the water heater A, an operation unit R, and the like. The water heater A includes a combustion chamber 1 and the combustion chamber 1.
And a heat exchanger 3 for heating water by the burner 2. Under the combustion chamber 1, air for combustion is supplied to the burner 2, and combustion of the burner 2 is performed. A fan 4 for exhausting exhaust gas to the outside of the combustion chamber 1 is connected in communication.

A water supply channel 5 for supplying water for heating and a hot water supply channel 6 for supplying hot water heated by the heat exchanger 3 are connected to the heat exchanger 3. Is connected to a general hot water tap 7 for hot water supply to a kitchen or a washroom, and a manual bathtub hot water tap 9 for hot water supply to a bathtub 8. The water supply passage 5 includes a water flow rate sensor 10 as a water flow rate detecting means for detecting a water flow rate Qx to the heat exchanger 3, and a water temperature sensor 11 for detecting a water temperature Ti at an inlet side of the heat exchanger 3. A water flow control valve 12 as a flow rate change valve for changing the flow rate Qx of water to the heat exchanger 3 and changing the flow rate of hot water to the hot water supply path 6; A hot water supply temperature sensor 13 for detecting a hot water supply temperature Tx supplied from the hot water supply path 6 to the general hot water tap 7 and the hot tub tap 9 is provided.

The burner 2 is connected to a fuel supply passage 14 for supplying fuel gas by connecting to a general household gas supply pipe. The fuel supply passage 14 has a fuel supply amount Ip to the burner 2. Is provided with an electromagnetic proportional valve 15 for adjusting the pressure and an intermittent valve 16 for intermittently supplying fuel, and an igniter 17 for ignition and a frame rod 18 for detecting ignition are also provided.

The operation unit R is a controller connected to the control unit H by wire or wirelessly, and has an operation switch 19 for instructing start and stop of the operation of the bathtub hot water supply device.
A temperature setting switch 20 as a target temperature setting means for changing and setting the target hot water supply temperature Ts, a bathtub hot water tap 9 to a bathtub 8
A hot water supply switch 21 as an integrated hot water supply instructing means for instructing hot water supply to the hot water supply, a hot water amount setting switch 22 as a target hot water supply amount setting means for changing and setting a target hot water supply amount to supply hot water to the bathtub 8;
A buzzer 23 as notification means for notifying that the set target hot water supply amount has been reached, a hot water release switch 24 as general hot water supply instruction means for canceling integrated hot water supply control described later and switching to general hot water supply control, and various information. And the like are provided.

The control unit H is provided with hot water supply control means 26 for controlling the operation of the hot water supply A. The hot water supply control means 26 detects the water flow rate sensor 10 after the hot water switch 21 is turned on. And a water supply amount integrating means 27 for detecting the amount of hot water to the hot water supply path 6 with the water supply amount sensor 10.
Incoming water temperature Ti detected by incoming water temperature sensor 11, target hot water supply temperature T set by temperature setting switch 20
s, and the burner 2 is connected to the water supply channel 5 through the heat exchanger 3.
Based on the maximum amount of heat Gm that can be supplied to the water from the furnace, a target water supply amount Qm for setting the hot water supply temperature Tx supplied from the heat exchanger 3 to the hot water supply path 6 to the target hot water supply temperature Ts is calculated from the following equation 1, Water flow Qx detected by water flow sensor 10
However, the water flow control valve 12 is configured to be changed and adjusted so as to be equal to the target water flow amount Qm.

[0028]

Qm = Gm / (Ts−Ti) (where Ts> Ti)

In the above equation (1), the maximum heat quantity Gm
Is the amount of heat that can be supplied to water via the heat exchanger 3 when the amount of heat generated by the burner 2 is maximized by adjusting the electromagnetic proportional valve 15, and is stored and held in the hot water supply control unit 26 in advance.

Next, the hot water supply control operation by the hot water supply control means 26 will be described with reference to the flowchart of FIG. The hot water supply operation is started by turning on an operation switch 19 of the operation unit R, the general hot water tap 7 and the bathtub hot water tap 9 are opened, water passes through the water supply passage 5, and the water flow rate detected by the water flow rate sensor 10. When Qx reaches the amount of ignition water, ventilation by the fan 4 is started, the electromagnetic proportional valve 15 and the intermittent valve 16 are opened, and the burner 2 is ignited by the igniter 17. Is started.

In this case, the hot water switch 21 of the operation unit R
No hot water tap 7 and hot water tap 9 for bathtub
Is opened, normal general hot water supply control is executed. That is, hot water temperature T detected by hot water temperature sensor 13
The electromagnetic proportional valve 15 is adjusted so that x becomes the target hot water supply temperature Ts set by the temperature setting switch 20 to control the fuel supply amount Ip to the burner 2 and the fan 4
Is controlled such that the number of revolutions becomes a preset number of revolutions with respect to the fuel supply amount Ip. Then, the target water flow rate Qm is calculated based on the above-described equation 1, and the water flow control valve 12 is changed and adjusted so that the water flow rate Qx detected by the water flow rate sensor 10 becomes equal to the target water flow rate Qm. When the detected hot water flow rate Qx becomes equal to or less than the ignition water flow rate when the general hot water tap 7 and the bathtub hot water tap 9 are closed, the combustion of the burner 2 is stopped. Whether the detected water flow amount Qx is equal to the target water flow amount Qm is determined based on whether or not the difference between them is equal to or less than a predetermined value.

When the hot water switch 21 of the operating section R is turned on and the hot tub tap 9 is opened, the integrated hot water supply control for supplying a predetermined amount of hot water to the bath tub 8 is executed. In this case, hot water supply is performed at the target hot water supply temperature Ts set by the temperature setting switch 20 in the same operation as the above-described general hot water supply control. When the water amount Qx is integrated and the integrated flow reaches the target hot water supply amount set by the hot water amount setting switch 22 of the operation unit R, the buzzer 23 of the operation unit R is sounded to notify the user and the water amount adjustment valve is provided. 12
Is reduced to a minimum flow rate. In this case, the hot water supply amount changes, but the hot water supply temperature remains unchanged.

When the buzzer 23 sounds, the bathtub hot-water tap 9 is immediately closed, and then, when the hot water release switch 24 is turned on, the buzzer 23 stops sounding, the water flow control valve 12 is opened, and the general hot water supply control is started. On the other hand, when the hot water in the bathtub 8 is insufficient, the bathtub hot water tap 9 is closed after waiting for the desired hot water quantity. In any case, if only the buzzer 23 is stopped sounding by the hot water release switch 24 without closing the bathtub hot water tap 9, the water continues to flow in the water supply channel 5 due to the continuation of the hot water supply. The flow sensor 10 detects the flow of water. Thus, immediately after the water filling switch 24 is turned on, the water flow rate sensor 10
Detects that water is flowing, determines that the user has forgotten to close the bathtub hot water tap 9, does not accept the stop of the buzzer 23, continues to sound the buzzer 23, and continues to sound the bathtub hot water tap 9.
It informs you of forgetting to close. Therefore, buzzer 2
In order to stop the ringing of 3, it is necessary to close the hot-water tap 9 for the bathtub, and thereafter, the general hot-water supply control can be executed only by turning on the hot water release switch 24.

[Another Embodiment] In the above embodiment,
Although the hot water supply switch 21 as the integrated hot water supply instruction means and the hot water release switch 24 as the general hot water supply instruction means are separately provided, these switches 21 and 24 are implemented by one switch. You can also. For example, the integrated hot water supply control is executed by pressing the hot water switch 21, and by pressing the same hot water switch 21 again,
The configuration may be such that the integrated hot water supply control is released and the general hot water supply control is executed. Further, the operation switch 19
Is turned off once, and the operation switch 19 is turned on again to cancel the integrated hot water supply control and execute the general hot water supply control. Although the one that also serves as the hot water supply instructing means is shown, these may be implemented separately.

The water flow rate sensor 10 provided in the water supply passage 5
In this case, the flow of hot water to the hot water supply path 6 when the notification cancellation is instructed is shown.
Alternatively, another sensor may be provided in the hot water supply path 6 directly, and the sensor may detect the flow of hot water to the hot water supply path 6 at the time of the notification release instruction. Furthermore, the configuration has been shown in which the hot water supply control means 26 integrates the water flow rate Qx detected by the water flow rate sensor 10 to detect the integrated flow rate. However, the integrated flow rate may be directly detected using an integrating flow meter or the like. It can also be implemented.

In addition to the buzzer 23, a lamp may be turned on or blinking in addition to the buzzer 23 as a notifying means for notifying that the amount of hot water supplied to the bath 8 has reached the target amount of hot water. Various methods can be considered as the notification means, such as displaying that the user has forgotten to close the hot water tap 9.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of the entire hot water supply device for a bathtub.

FIG. 2 is a flowchart of a control operation.

[Explanation of symbols]

 Reference Signs List A water heater 2 burner 3 heat exchanger 5 water supply path 6 water supply path 7 general hot water tap 8 bathtub 9 bathtub hot water tap 10 water flow rate detection means 12 flow rate change valve 20 target temperature setting means 21 integrated hot water supply instruction means 22 target hot water supply amount Setting means 23 notification means 24 notification release means also serving as general hot water supply instruction means 26 hot water supply control means 27 hot water supply amount integrating means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24H 1/00 602

Claims (6)

(57) [Claims] 1. A water heater (A) having a heat exchanger (3) for heating water from a water supply channel (5) by combustion of a burner (2) and supplying it to a hot water channel (6), and a bathtub (8). A) a hot water supply tap for a bathtub (9) connected to the hot water supply path (6) to supply hot water to the hot water supply path (6); and a hot water supply amount integrating means (27) for integrating the amount of hot water supplied to the hot water supply path (6). The hot water heater (A) is controlled, and the notifying means (23) is provided when the detected hot water supply amount by the hot water supply amount integrating means (27) reaches the target hot water supply amount.
Hot water supply control means (26) for operating the hot water supply, integrated hot water supply instructing means (21) for instructing the start of integration of the hot water supply amount to this hot water supply control means (26), and instructing the informing means (23) to cancel the notification A bathtub hot water supply device comprising: a notification canceling means (24) for performing notification of cancellation of notification by the notification canceling means (24), and detecting a flow of hot water to the hot water supply path (6). A bathtub hot water supply device configured to stop the cancellation of the notification by the notification canceling means (24). 2. A flow rate changing device for changing a flow rate of hot water to the hot water supply passage when the hot water supply amount detected by the hot water supply amount integrating means reaches a target hot water supply amount. The hot water supply unit (A) is controlled to execute integrated hot water supply control for reducing the amount of hot water supply by a valve (12) and general hot water supply control for opening the flow rate change valve (12) to supply hot water. 26) a general hot water supply instruction means (24) for instructing the start of the general hot water supply control;
The hot water supply apparatus for a bathtub according to claim 1, wherein said integrated hot water supply instruction means (21) is configured to instruct start of integrated hot water supply control. 3. The hot water supply device for a bathtub according to claim 2, further comprising target hot water supply amount setting means (22) for changing and setting the target hot water supply amount. 4. The hot water supply control means (26) is configured to control the hot water supply (A) so that a hot water supply temperature supplied to the hot water supply path (6) becomes a target hot water supply temperature. The hot water supply device for a bathtub according to claim 3, further comprising target temperature setting means (20) for changing and setting the temperature. 5. The integrated hot water supply instructing means (21) is a hot water switch for instructing the bath tub (8) to be hot water filled, and the general hot water supply instruction means (24) is a hot water filling means for canceling the hot water filling instruction. The hot water supply device for a bathtub according to claim 4, wherein the hot water supply device is a release switch, and a general hot water tap (7) different from the bathtub hot water tap (9) is connected to the hot water supply path (6). 6. A water flow detecting means (1) through said water supply channel (5).
0) is provided to detect the amount of hot water supplied to the hot water supply passage (6) by integrating the amount of water flow detected by the water flow detecting means (10), and to instruct the notification cancel means (24) to cancel the notification. The hot water supply apparatus for a bathtub according to claim 5, wherein the flow of hot water to the hot water supply path (6) is detected.