JP3461131B2 - Water heater control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water heater control apparatus having a fluctuation operation function for changing the hot water temperature every moment in order to obtain a massage effect in a shower, for example.

[0002]

2. Description of the Related Art In a water heater, a heat exchanger heated by a gas burner to raise the temperature of water supplied from a water supply pipe, and a hot water temperature sensor for detecting the temperature of hot water supplied from the heat exchanger. , And a flowing water sensor for detecting the presence or absence of flowing water passing through the heat exchanger. When the scallop provided in the hot water supply pipe is opened, the water supply to the heat exchanger is started, and the running water sensor detects the running water. The gas burner starts combustion in response to the detection of the flowing water, and the heat exchanger is heated. The combustion amount of the gas burner is set so that the temperature of the hot water detected by the hot water temperature sensor matches the set temperature.
The amount of gas supplied is controlled by the hot water supply control means.

In such a water heater in which the temperature of the hot water is controlled to the set temperature, normally, once the user once sets the set temperature by the up / down switch, the set temperature is set by the up / down switch. Unless it is changed, the temperature is controlled to reach the set temperature. In this specification, this control is called "normal hot water supply control", and the hot water supply operation by this normal hot water supply control is called "normal hot water supply operation".

In the water heater, when using a shower in a bathroom or the like, there is a fluctuation operation in which a massage effect is obtained by momentarily changing the temperature of the hot water sprinkled. In this fluctuation operation, rather than heating the water passing through the heat exchanger to a constant temperature, the hot water supply set temperature is changed in a predetermined pattern, and the heating amount of the gas burner (heating means) that heats the heat exchanger accordingly. The amount of heat given to the water is changed by changing the water temperature every moment so that the temperature of the hot water constantly changes. The water heaters include the above-mentioned "normal hot water supply operation" and the so-called "water heater with fluctuation operation function" that can perform this "fluctuation operation".

By the way, the water heater main body is connected to two remote controllers each having an operation section for setting a set temperature and the like at each hot water supply location and a display section for displaying the set temperature and the like. As the remote controller, there are a bath remote controller installed in the bathroom and a main remote controller installed in the kitchen, etc., and each operation unit has an operation switch for selecting whether the hot water supply control means is in an operating state or a stop state. And hot water supply temperature setting means (for example, an up / down switch) for setting the set temperature and the like. The hot water supply temperature setting means of each remote controller can set the respective set temperatures, and the set temperatures set by the respective hot water supply temperature setting means are individually stored for each remote controller.

Since the water heater main body heats water by one heat exchanger, the hot water supply control means needs to perform control based on one set temperature. For this reason, the bath remote controller is provided with a priority switch as a changeover switch for selecting which remote controller controls the hot water supply control means based on the set temperature set by which remote controller. Temperature control is performed based on the set temperature set by the remote controller. The set temperature can be set (changed) only by the remote control selected by the priority switch, and the hot water temperature display section of either remote control can be set by the remote control on the selected side. The temperature is displayed the same.

As described above, in the water heater provided with two remote controllers, the fluctuation operation described above is normally performed, and the fluctuation operation mode is selected because the fluctuation operation is normally performed when the shower is used in the bathroom. The fluctuation operation switch for turning on is provided on the bath remote control. In the fluctuation operation mode, in order to change the hot water temperature, for example, the set hot water temperature is changed according to a preset temperature change pattern for the fluctuation operation mode regardless of the set temperature set by each remote controller. , The reference temperature of the temperature change pattern for the fluctuation operation mode (for example, the upper limit temperature, the center temperature, the lower limit temperature) based on the set temperature set by the temperature control switch of the bath remote controller only or the priority remote controller selected by the priority switch ), Etc.
The heating amount of the heating means changes according to each temperature change pattern.

[0008]

In the water heater with the fluctuation operation function configured as described above, the hot water temperature fluctuates when the fluctuation operation mode is selected, but the shower user in the bathroom does not If the operator forgets that the operation mode is selected, the temperature control switch may be operated in an attempt to raise the set temperature when the hot water temperature fluctuates due to fluctuation water temperature. In such a case, it suffices to cancel the fluctuation operation and switch to the normal hot water supply operation mode, but since I am more interested in changing the set temperature than canceling the fluctuation operation, I have to use the temperature control switch. There is a problem that the hot water supply temperature cannot be set to a desired temperature even if the temperature is adjusted or the temperature control switch is operated during the fluctuation operation, and the usability is poor.

On the other hand, when hot water is used in a kitchen or the like during the fluctuation operation mode, the fluctuation of the hot water supply temperature occurs due to the fluctuation operation.
Therefore, the user may change the set temperature with the main remote controller. In this case, the temperature is not changed during the fluctuation operation mode, and there is a problem that a user such as a kitchen mistakes it as a malfunction of the equipment.

An object of the present invention is to improve the usability of a water heater with a fluctuation operation function by accurately notifying an erroneous operation in the fluctuation operation mode.

[0011]

According to the present invention, claim 1
A heat exchanger heated by the heating means to raise the temperature of passing water, a hot water supply pipe from which hot water heated by the heat exchanger is discharged, and a hot water heated by the heat exchanger and discharged from the hot water supply pipe. Hot water supply temperature setting means for setting a target temperature, and normal hot water supply operation control means for controlling the heating means so that the temperature of hot water discharged from the hot water supply pipe matches the set temperature set by the hot water supply temperature setting means. And a fluctuation operation control means for controlling the heating means so as to change the temperature of the hot water discharged from the hot water supply pipe according to a time change, a normal hot water supply operation mode and the fluctuation operation controlled by the normal hot water supply operation control means. In a controller of a water heater provided with a fluctuation operation switch for switching between fluctuation operation modes by control means, the water supply is provided during or at the time when the fluctuation operation mode is selected. When the operation of the hot water temperature setting means is operated, the fluctuation notification control means for notifying that the fluctuation operation control means is in the fluctuation operation mode is provided. According to a second aspect of the present invention, in the first aspect, the first remote controller is installed in the bathroom and is provided with the fluctuation operation switch and the hot water supply temperature setting means, and the second remote control is provided outside the bathroom and is provided with the hot water supply temperature setting means. The fluctuation operation control means determines a target temperature of the fluctuation operation mode based on the set temperature set by the hot water supply temperature setting means of the first remote controller when the fluctuation operation mode is selected. When the hot water supply temperature setting means is operated in the fluctuation operation mode, the target temperature of the fluctuation operation mode is changed according to the operation, and the fluctuation notification control means is in the middle of selecting the fluctuation operation mode or At this time, if the hot water supply temperature setting means of the first remote controller or the hot water supply temperature setting means of the second remote controller is operated, it is announced that the fluctuation operation mode is in effect. Characterized in that it further notification.

[0012]

According to the first aspect of the present invention, when hot water is supplied when the fluctuation operation mode is not selected by the fluctuation operation switch, normal heating means is controlled and hot water is discharged from the hot water supply pipe. The hot water is heated so as to match the temperature set by the hot water supply temperature setting means for setting the target temperature, and is discharged at a stable hot water supply temperature. On the other hand, when hot water is supplied when the fluctuation operation mode is selected by the fluctuation operation switch,
Fluctuation operation is performed in which the hot water supply temperature changes with time. When the hot water supply temperature setting means is operated during the fluctuation operation mode, the fluctuation notification control means notifies that the fluctuation operation is being performed by the fluctuation operation control means.

As a result, the user can switch the fluctuation operation switch or the like as necessary after recognizing that the fluctuation operation mode is in progress.

In the second aspect, the fluctuation notification control means is in the fluctuation operation when the hot water supply temperature setting means of the first remote controller or the hot water supply temperature setting means of the second remote controller is operated in the fluctuation operation mode. Is announced by voice. By this notification, it can be surely recognized that the fluctuation of the hot water temperature is due to the fluctuation operation. Therefore, it is possible to confirm that the desired stable hot water temperature is not obtained because of fluctuation operation, so if there is no need for fluctuation operation, cancel it and switch to the normal hot water supply operation mode. You can choose.

As described above, according to the first aspect of the present invention, when the fluctuation operation mode is selected, if the hot water supply temperature setting means is operated to change the hot water discharge temperature, the fluctuation operation mode is informed. Therefore, when the hot water temperature to be discharged is not the desired hot water temperature, if the hot water temperature is caused by the fluctuation operation, the fluctuation operation can be canceled and the normal hot water supply operation mode can be switched. Further, according to claim 2, when it is attempted to change the set temperature, it is possible to easily recognize that the fluctuation operation mode is selected in the bathroom, which may cause a malfunction such as misunderstanding that the device is malfunctioning. There is no.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The hot water supply device 1 shown in FIG.
It consists of a reheating unit 3 and a hot water supply unit 2 by the controller 4.
And the reheating unit 3 are controlled.

The hot water supply unit 2 is a hot water supply heat exchanger 6 heated by a hot water supply burner 5 as a heating means, a water supply pipe 7 connected to a water pipe (not shown) to supply water to the hot water supply heat exchanger 6, and the opening of the water supply pipe. , A water amount sensor 8 for controlling the water supply temperature, a water temperature sensor 9 for detecting the temperature of the water to be supplied and outputting it to the controller 4, a water flow sensor 10 for detecting the presence or absence of a water flow passing through the water supply pipe and outputting it to the controller 4, A hot water supply pipe 11 through which hot water heated by the hot water supply heat exchanger 6 is discharged, a bypass pipe 12 for mixing a part of the water supplied to the water supply pipe 7 with the hot water supply pipe 11,
A bypass servo 13 for adjusting the opening degree of the bypass pipe 12,
The temperature of the hot water in the hot water supply pipe 11 downstream of the confluence with the bypass pipe 12 is detected and output to the controller 4, and the temperature near the outlet of the hot water heat exchanger 6 is detected and the controller 4 is detected. The heat exchange temperature sensor 15 for outputting is provided.

The gas supply pipe 16 for supplying the gas is provided with a source gas solenoid valve 17 whose opening and closing is controlled, and is branched from the gas supply pipe 16 downstream of the source gas solenoid valve 17 to supply the hot water burner 5
A hot water supply gas solenoid valve 18, 19 and a hot water supply gas proportional valve 20 whose opening is controlled are provided in a hot water supply gas pipe 16a for supplying fuel gas to
And are provided. Reference numeral 21 denotes a hot water supply combustion fan that supplies combustion air to the hot water supply burner 5, and its rotation speed is changed by a control signal from the controller 4. 22 is the controller 4
Is a hot water supply spark plug that ignites the hot water supply burner 5 by applying a high voltage through the igniter 23 that is operated by a control signal from the hot water supply burner 5, and 24 is a hot water supply frame rod that detects the combustion state of the hot water supply burner 5.

The hot water supply pipe 11 is branched downstream of the hot water supply temperature sensor 14 into a bathroom hot water supply pipe 26 for supplying hot water to the bathroom 25 and a kitchen hot water supply pipe 28 for supplying hot water to the kitchen 27.
6. At the end of kitchen hot water supply pipe 28
0 is provided, and the bathroom hot water supply pipe 26 is provided with a branch hot water supply pipe 29A for the shower head, which is branched from the currant 29.

The controller 4 includes a CPU, ROM, RA
A bath remote controller 40 provided in the bathroom 25 or a main remote controller 50 provided in the kitchen 27, which is configured by M or the like.
The hot water supply unit 2 and the reheating unit 3 are controlled in accordance with various operation information instructed by. Hereinafter, the hot water supply unit 2 will be described, and the control configuration related to the reheating unit 3 will be omitted.

The bath remote controller 40 is configured to communicate with the controller 4 and transmit various control signals. As shown in FIG. 2, the bath remote controller 40 instructs the controller 4 to operate as an operating means. Temperature control switch 4 consisting of a running switch 41 and a pair of up and down switches for setting the hot water supply set temperature which is the "target temperature" of the claim
2 and a priority switch 43 as priority switching means. Each time the priority switch 43 is pressed, the priority is switched between the two remote controllers. Further, the bath remote controller 40 of the present embodiment is provided with a fluctuation operation switch 44 for performing a fluctuation operation in which the hot water temperature changes momentarily with time as a function for obtaining a massage effect when using a shower. There is.

As the display means of the bath remote controller 40, the bath remote controller 40 includes a display unit 45 for displaying the hot water supply set temperature set by the priority remote controller and a priority switch 43.
There is a priority display lamp 46 that indicates that the temperature control switch 42 can be operated when is selected, and a fluctuation lamp 47 that indicates that fluctuation operation is in progress. In addition, the bath remote controller 40 has some switches and a display unit for reheating, automatic water filling, and the like.

Similarly, in the main remote controller 50 as well,
As shown in FIG. 3, the temperature control switch 52 can be operated when the main remote control 50 is selected by the operation switch 51, the temperature control switch 52, the display 54, and the priority switch 43 of the bath remote control 40. There is a priority display lamp 55 and the like.

Further, in this embodiment, the remote controllers 40 and 50 are provided with speakers 48 and 56 for performing various voice guides according to the operation states of the respective remote controllers by the user.

Next, each remote controller 40 having the above structure,
The functional configuration for various control operations in 50 will be described by taking the bath remote controller 40 as an example. As shown in FIG. 4, the operation switch 4 is installed inside the bath remote controller 40.
According to the operation of the operation control unit 410 for controlling the start and stop of the operation in accordance with the operation of No. 1, and the operation of the fluctuation operation switch 44, it changes in a predetermined pattern for changing the hot water temperature constantly in the fluctuation operation. Fluctuation temperature generation unit 411 for generating the hot water supply set temperature, and temperature setting unit 4 for setting the hot water supply set temperature according to the operation of the temperature control switch 42.
20, a priority switching unit 430 for controlling the selection of the remote controller for setting the hot water supply set temperature according to the operation of the priority switch 43, a display unit 440 for performing various displays according to the operation state, various voices Each function unit of the voice control unit 450 including a voice generation circuit for controlling the guide, and the communication unit 460 for performing communication with the controller 4,
It is composed of a microcomputer and various circuit elements.

The operation control unit 410 switches between the operating state and the stopped state each time the operation switch 41 is operated, and sends a message to that effect to the controller 4 via the communication unit 460. Also,
Each time the fluctuation operation switch 44 is operated, the fluctuation operation mode and the normal hot water supply operation mode are switched. The fluctuation temperature generation unit 411 changes the hot water supply set temperature according to a preset hot water temperature change pattern, and has, for example, hot water temperature change pattern characteristics as shown in FIG. The hot water temperature change pattern characteristic is, for example, to match the hot water supply set temperature set by the remote controller with the upper limit temperature of the hot water temperature change pattern. In the middle of the specific temperature and lower limit temperature,
The hot water temperature change pattern may be matched with an arbitrary temperature. Further, the hot water temperature change pattern may be changed only within a temperature range fixed in advance.

When the bath remote controller 4 is selected by the priority switching unit 430, which will be described later, the temperature setting unit 420 sets / changes the hot water supply set temperature according to the operation of the temperature control switch 42, and sets the hot water supply set temperature. Remember. When the priority switching unit 430 switches the priority switching from the bath remote controller 4 to the main remote controller 5, the hot water supply set temperature stored in the temperature setting unit of the main remote controller 5 is again transferred from the main remote controller 5 to the bath remote controller 4. When the priority switching is performed, the hot water supply set temperature stored in the bath remote controller 4 is displayed on the display unit 45.

The priority switching unit 430 performs priority switching of the remote controller capable of setting / changing the hot water supply set temperature each time the priority switch 43 provided in the bath remote controller 4 is operated. As a result, when the bath remote controller 4 is prioritized, the temperature setting unit 420 of the bath remote controller 4 functions and only the operation of the temperature control switch 42 is accepted, and the main remote controller 5
The operation of the temperature adjustment switch 52 cannot be accepted because the temperature setting unit of No. 2 does not function. On the contrary, when the main remote controller 5 is prioritized, only the operation of the temperature control switch 52 of the main remote controller 5 is accepted, and the operation of the temperature control switch 42 of the bath remote controller 4 is not accepted.

The display section 440 has a fluctuation operation switch 44.
When the normal hot water supply operation state is performed in response to the operation of, the temperature setting unit 420 displays the hot water supply set temperature stored in the remote controller in the priority state to clearly indicate to the user that it is in the operation state, and Remote control priority indicator lamp 46
Or 55 is displayed. In the controller 4,
The hot water supply burner 5 detects the flowing water by the water flow sensor 10.
When combustion is started and flame detection is performed by the hot water supply frame rod 24, a combustion lamp or the like is displayed to clearly indicate that the combustion state is set. Also, the fluctuation operation switch 4
When the fluctuation operation mode is selected by 4, the fluctuation lamp 47 is turned on to display that the fluctuation operation mode is in progress, and the user is informed that the temperature of the hot water to be discharged fluctuates momentarily due to the fluctuation operation. Inform. Other,
The combustion of the bath burner is displayed according to automatic filling and reheating.

When the user operates the remote controller, the voice control section 450 voice-guides through the speaker 48 whether or not each operation is appropriate. As the voice guide of this embodiment, the temperature control switch 42 is used during the fluctuation driving.
When is operated, the speaker 48 announces "Fluctuation is in use" or "Outflow temperature fluctuates". Further, when the temperature control switch 52 is operated, “Fluctuation is in use.” Or “The hot water temperature fluctuates.” Is announced via the speaker 56 of the main remote controller 50 to call attention to the operator. . Thus, when the shower is used, the user can be made aware that the hot water temperature is fluctuating due to the fluctuation operation, and the user can be instructed to perform an appropriate remote control operation. In addition, when the desired hot water temperature cannot be obtained because the hot water temperature fluctuates, the hot water temperature may fluctuate due to fluctuation It is possible to notify that it is a thing, and by doing this, appropriate processing such as canceling the fluctuation operation mode and switching to the normal hot water supply operation mode can be performed quickly, and it is possible to accidentally change the temperature to the desired hot water supply set temperature. The adjustment switch 42 is not operated.

When the main remote controller 50 is used to change the hot water supply set temperature in the kitchen 27, the bathroom 25
Then, since it is possible to easily recognize that the fluctuation operation mode is selected, it can be seen that it is not a malfunction of the appliance that the hot water supply set temperature cannot be changed.

In addition, when the temperature control switches 42 and 52 are operated in an attempt to set / change the hot water supply set temperature on the remote control which is not in the priority state by the priority switch 43, a voice guidance is provided to indicate that the remote control is not in the priority state. The operation of the priority switch 43 is prompted. Here, for example, the remote controller that is not the priority side announces, "The hot water supply set temperature cannot be changed. Press the priority switch and then the temperature control switch.", And the remote controller on the priority side does not announce anything. With this announcement,
Since the user understands that the operation of the temperature control switches 42 and 52 was not appropriate, there is no possibility that the failure to set or change the temperature with the temperature control switches 42 and 52 is a malfunction of the device. It is possible to avoid unnecessary service requests due to misidentification.

In the voice control unit 450, the priority switch 43
By operating the bath remote control 40 to the main remote control 5
When the priority is switched to 0, if the hot water supply set temperature stored in each remote controller is different, "The hot water supply set temperature has been changed." If the hot water supply set temperature is the same,
If the newly set hot water supply temperature is not less than 60 ° C. without performing each voice guide, the voice guide is performed via the speaker 48, "Hot water comes out." In this case, with the main remote controller 50, "You can change the hot water supply set temperature.", No voice guide, "Hot water comes out."
Each of the announcements is performed via the speaker 56. In addition, in the voice control unit 450, when the automatic filling operation is performed, a voice guide of “filling the filling water” is performed, and based on the set water level and the like, “On the bath, after, I will put it in after a few minutes. " It should be noted that the voice control unit 450 generates an electronic sound (beep sound) at the time of other operations on the remote controller to notify execution of the operation.

Communication unit 460 sends the information of each functional unit in each remote controller to controller 4 and, conversely, receives the information of the operating state, combustion state, etc. of hot water supply device 1 sent from controller 4. Then, such information is displayed on the display unit 45 via the display unit 440, or the voice control unit 450 informs the voice guidance via the speaker 48. The main remote controller 50 is also provided with functional units such as an operation control unit, a temperature setting unit, a display unit, a voice control unit, and a communication unit, like the bath remote controller 40.

Next, the operation of the hot water supply device 1 having the above-described configuration and the control operation by the controller 4 will be described. The user controls the bath remote control 40 (or the main remote control 5
When the operating switch 41 (51) of 0) is operated to enter the operating state, the stored hot water supply set temperature is displayed as the hot water supply temperature on the display unit 440 of the remote controller, indicating that the operating state is set. At this time, the displayed hot water supply temperature is the hot water supply set temperature set in the remote controller whose priority is set by the priority switch 43. Then, at this time, when the hot water supply temperature is 60 ° C. or higher, a voice guide saying “Hot water comes out.” Is given to alert the user to the hot water.

The user selects the temperature control switch 4 on the remote controller on the side that is prioritized by the priority switch 43.
2 (52) is operated, the indicator 44 (5
The hot water supply set temperature displayed in 4) is changed, and the hot water supply set temperature stored in the remote controller is newly set.

On the contrary, the side where priority is not set (non-priority)
When the temperature control switch 42 (52) is operated with the remote controller, the hot water supply set temperature displayed on the display 45 (54) does not change, and the temperature setting unit 420 cannot set a new hot water supply set temperature. At this time, the voice control unit 450 prompts the user that the hot water supply temperature cannot be changed because a voice guide is given via the speaker 48, "The hot water supply set temperature cannot be changed. Please operate the priority switch." Inform. The remote control on the priority side does not announce anything. Thus, the user can confirm that the hot water supply temperature cannot be changed not because the remote controller and the controller 4 are out of order but because the priority switch 43 is not switched. Therefore, since the user is prompted to operate the priority switch 43, after performing the switching operation of the priority switch 43, the temperature control switch 42 (52) is again operated on the remote controller on the priority side to newly supply hot water. The set temperature can be set.

On the other hand, when the user operates the priority switch 43 on the bath remote controller 40, the hot water supply set temperature set by the priority side remote controller differs from the hot water supply set temperature set by the non-priority remote controller. When the main remote controller 50 is switched to the bath remote controller 40 with priority, the bath remote controller 40 provides a voice guide “The hot water temperature can be changed.” And the main remote controller 50 does not announce anything. When the bath remote control 40 is switched to the main remote control 50 with priority, the bath remote control 40 provides a voice guide "The hot water supply set temperature has been changed." At that time, the main remote control 50 can change the hot water supply set temperature. The voice guidance will be conducted respectively.

When the user opens the calan 29 (30) after setting / changing the hot water supply set temperature according to the above procedure, the water supply to the water supply pipe 7 is started, and the water flow sensor 10 detects the water flow due to the water supply. , And sends a detection signal to the controller 4. The controller 4 confirms the water supply from the water supply pipe 7 to the hot water supply heat exchanger 6 by the detection signal of the water flow sensor 10, operates the hot water supply combustion fan 21, and operates the original gas solenoid valve 1
7. The hot water supply gas solenoid valves 18 and 19 are opened, the hot water supply gas proportional valve 20 is adjusted in opening degree, and a high voltage is applied to the igniter 23 to cause spark discharge in the hot water supply ignition plug 22 to cause the hot water supply burner 5 to operate. Ignition processing is performed.

The controller 4 is the hot water supply frame rod 2
By detecting the output of No. 4, it is recognized that the hot water supply burner 5 has ignited, and the display unit 440 of the remote controls 40, 50.
In addition to the combustion display, the temperature detected by the hot water supply temperature sensor 14 and the priority set remote control are set.
5 and 54, the opening degree of the hot water supply gas proportional valve 20, the rotation speed of the hot water supply combustion fan 21, the opening and closing of the hot water supply gas solenoid valves 18, 19 and the water amount control so that the hot water supply set temperatures indicated by 5 and 54 match.
The opening degree of the bob 8 and the opening degree of the bypass servo 13 are adjusted.

When the hot water supply set temperature is changed by operating the temperature control switches 42 and 52 and the priority switch 43 during operation, the hot water supply burner 5 is set based on the newly set / changed hot water supply set temperature. The combustion amount of is changed, and hot water heated to the new hot water supply set temperature comes out.

Further, when the bath remote controller 40 is preferentially selected by the priority switch 43, when the user operates the fluctuation operation switch 44 of the bath remote controller 40 in the bathroom 25 to select the fluctuation operation mode, the fluctuation temperature generation unit is selected. The heating amount of the hot water supply burner 5 is fluctuated every moment according to the time change in a predetermined pattern by 411 to change the hot water supply hot water temperature. As a result, the user can obtain a massage effect in a shower or the like. When the temperature control switch 42 is operated to change the hot water supply set temperature in the fluctuation operation mode, the voice guide prompts "Fluctuation is in use" and "Change fluctuation temperature." Will be announced. Therefore,
When the fluctuation operation mode is selected, if the user tries to change the hot water temperature with the temperature control switch 42 by mistakenly thinking that it is the normal hot water supply operation mode, it can be seen that the fluctuation operation mode is in progress, so when the normal hot water supply operation is desired In addition, the fluctuation operation mode can be canceled and normal hot water supply operation can be performed.

When the temperature control switch 52 of the main remote controller 50 of the kitchen 27 is operated, "Fluctuation is in use."
Or, "The temperature of the hot water fluctuates."
A voice guide is given through the speaker 56 of FIG. 3 to recognize that the operation mode is the fluctuation driving mode.

When the currans 29 and 30 are closed and the water flow is no longer detected by the water flow sensor 10, or when the operation switches 41 and 51 are instructed to stop the operation, the controller 4 causes the original gas solenoid valve 17 to operate. , The hot water supply gas solenoid valves 18 and 19 are closed, and the hot water supply combustion fan 21
Is stopped, the hot water supply burner 5 is extinguished, and the operation of the hot water supply device 1 is stopped.

As described above, in the present invention, when the fluctuation operation mode is selected, when the temperature control switch of each remote controller is operated, the fact that the fluctuation operation mode is in effect is notified by the voice guide. It can be seen that when the hot water supply set temperature is changed during the mode, the hot water supply set temperature does not change not because of equipment failure but because of fluctuation operation.

Although the hot water supply unit 2 having the bypass pipe 12 and the bypass servo 13 is shown in the above embodiment, the hot water heated by the hot water heat exchanger 6 may be directly supplied to the hot water supply pipe 7. Further, in the above embodiment, the reheating part 3 is shown to have a function such as automatic water filling, but it may not have a water filling function. Further, although the hot water supply device 1 in which the additional heating unit 3 is provided side by side is shown, the one without the additional heating unit 3 may be used. Although two hot water supply burners 5 are shown, one hot water supply burner may be used, and an oil burner may be used instead of the gas burner.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a hot water supply device showing an embodiment of the present invention.

FIG. 2 is a front view showing a bath remote controller according to the present embodiment.

FIG. 3 is a front view showing the main remote controller of this embodiment.

FIG. 4 is a block diagram showing a functional configuration of the bath remote controller according to the present embodiment.

FIG. 5 is a characteristic diagram showing a variation pattern of the hot water supply set temperature of the fluctuation temperature generation unit in the present embodiment.

[Explanation of symbols]

11 Hot water supply pipe 2 Hot water supply unit (water heater) 4 controller (control device for water heater) 40 bath remote control (first remote control) 410 Operation control unit () 411 Fluctuation temperature generator (fluctuation operation control means) 42 Temperature control switch (hot water supply temperature setting means) 44 Fluctuation operation switch 450 Voice control unit (fluctuation notification control means) 48 speakers (fluctuation notification control means) 5 Hot water supply burner (heating means) 50 Main remote controller (second remote controller) 52 Temperature control switch (hot water supply temperature setting means) 6 Hot water supply heat exchanger (heat exchanger)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-4-302943 (JP, A) JP-A-7-336782 (JP, A) JP-A-3-25242 (JP, A) JP-A-10- 122657 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F24H 1/00 602 F24H 1/00 604

Claims (2)

(57) [Claims] 1. A heat exchanger heated by heating means to raise the temperature of passing water, a hot water supply pipe from which hot water heated by the heat exchanger is discharged, and a hot water supply pipe heated by the heat exchanger. Hot water supply temperature setting means for setting a target temperature of hot water discharged from the hot water supply pipe, and the heating means is controlled so that the temperature of hot water discharged from the hot water supply pipe matches the set temperature set by the hot water supply temperature setting means. Normal hot water supply operation control means, fluctuation operation control means for controlling the heating means so as to change the temperature of hot water discharged from the hot water supply pipe according to time change, normal hot water supply operation by control of the normal hot water supply operation control means In a controller of a water heater including a fluctuation operation switch for switching between a fluctuation operation mode and a fluctuation operation mode by the fluctuation operation control means, while the fluctuation operation mode is being selected Or when
A water heater controller, comprising: fluctuation notification control means for notifying that the fluctuation operation mode is in the fluctuation operation mode when the hot water supply temperature setting means is operated. 2. A first remote controller installed in a bathroom and provided with the fluctuation operation switch and the hot water supply temperature setting means, and a second remote controller installed outside the bathroom and provided with hot water supply temperature setting means.
A remote controller, wherein the fluctuation operation control means determines a target temperature of the fluctuation operation mode based on the set temperature set by the hot water supply temperature setting means of the first remote controller when the fluctuation operation mode is selected. When the hot water supply temperature setting means is operated in the fluctuation operation mode, the target temperature of the fluctuation operation mode is changed according to the operation, and the fluctuation notification control means is in the middle of the fluctuation operation mode being selected or At this time, when the hot water supply temperature setting means of the first remote controller or the hot water supply temperature setting means of the second remote controller is operated, the fact that it is in the fluctuation operation mode is informed by voice. Control device for water heater.