JPS63116047A - Temperature controlling device for hot water feeder with heating function - Google Patents

Abstract

PURPOSE:To enable an automatic changeover of an operation mode to be performed by a method wherein during a heating operation controlled by a timer, a hot temperature operation is performed irrespective of the turn-on or turn-off condition of a low temperature operation switch and in the other situations and if the low temperature operating switch is turned on, a low temperature operation is performed irrespective of the turn-on or turn-off condition of the heating operation switch. CONSTITUTION:As a 'good-night' start switch 31 is turned on and a timer is set, a 'good- night' start lamp 31a is lit and a hot temperature operation is performed irrespective of the turn-on or turn-off condition of a low temperature operation switch 15 until a time set by the timer is finished. In turn, as a 'good-morning' start switch 32 is turned on and the timer is set, a 'good-night' start lamp 32a is lit, a low temperature operation is performed if the low temperature operation switch 15 is turned on until the time set by the timer is reached and in turn if the low temperature operating switch is turned off, a hot temperature operation is performed. When the time set by the timer is reached, the hot temperature operation is started irrespective of the turn-on or turn-off condition of the low temperature operation switch 15. With this arrangement, the hot temperature operation and the low temperature operation can be changed over automatically according to a use and an application.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is a water heater with a heating operation function that can perform heating operation using a timer, and in addition to high-temperature operation for heating or hot water supply, the water heater can also be used for freezing prevention. The present invention relates to a temperature control device that can automatically switch between the high temperature operation and the low temperature operation, in which the temperature control device can also perform low temperature operation.

<Prior art and its problems> In a water heater that can perform hot water supply or heating using high-temperature water in a hot water storage can, the water in the hot water storage can is used to supply hot water or space heating. Of course, it is necessary to heat and maintain the water at a high temperature, but on the other hand, it is also necessary to heat and maintain the water in the hot water storage can at a low temperature in order to prevent the equipment from freezing.

The former is a high temperature operation, and the latter is a low temperature operation. Conventionally, switching between high-temperature operation and low-temperature operation of the hot water storage can was carried out by manually changing or switching the temperature control knob. However, such conventional methods have the disadvantage that the operation mode must be changed every time the operation is changed from high temperature operation to low temperature operation or from low temperature operation to high temperature operation. Particularly in devices where the heating operation can be performed using a timer, the convenience of performing the timer operation will be reduced unless the operating mode is automatically changed before and after the timer operation.

<Purpose> Therefore, the present invention solves the drawbacks of the above-mentioned prior art, and enables the water heater to be turned on and off, the heating operation switch to be turned on and off, the low temperature operation switch to be turned on and off, and the timer operation switch to be turned on and off. When the switch is turned on in a combination of on and off, the priority order of high temperature operation or low temperature operation of the hot water storage can is set as appropriate for use, and the switch is turned on each time the operation mode is changed. An object of the present invention is to provide a temperature control device for a water heater with a heating operation function, which is extremely convenient and easy to use and does not require repeated manual off operations.

Means for Solving the Problems> The present invention has a hot water supply function that controls high-temperature water from the hot water storage can to a preset temperature using an electric mixing hub, and also has a hot water supply function that controls hot water from the hot water storage can to a preset temperature by setting a timer. A hot water storage can for the hot water supply and heating, which has a heating operation function capable of stopping the circulation of heat-exchanged hot water to the radiator after a predetermined time, or starting it from a predetermined time, or a combination thereof. Temperature control for water heaters with a heating operation function that enables high-temperature operation that heats and maintains the hot water inside the body at a set high temperature, and low-temperature operation that heats and maintains the hot water inside the hot water storage can at a low temperature to prevent freezing. The device switches between the high temperature operation and the low temperature operation, and during the heating operation by the timer, the high temperature operation is performed regardless of whether the low temperature operation switch is on or off, and in other cases, the high temperature operation is performed regardless of whether the low temperature operation switch is on or not. The basic feature is that the system is configured to operate at a low temperature regardless of whether the heating operation switch is on or off.

<Function> Provided that the hot water storage can body operation switch is on, if the heating operation switch is off, and even if the heating operation switch is on but the timer is not operating, the low temperature operation switch is turned on. If it is on, it will be a low temperature operation, and if the low temperature operation switch is off, it will be a high temperature operation.

Furthermore, if the operation switch is on, the heating operation switch is on, and the timer is running, while heating operation is currently being performed by the timer, high temperature operation will occur regardless of whether the low temperature operation switch is on or off. When heating operation is not performed, low temperature operation occurs if the low temperature operation switch is on, and high temperature operation occurs when the low temperature operation switch is off. Therefore, for example, when a user uses a timer to perform heating operation on a winter night, if the user turns on the low-temperature operation switch at the same time, the operation mode will switch to low-temperature operation as soon as the timer-based heating operation ends, and the freezing prevention will continue. It will be done. In addition, if you turn on the low temperature switch when setting the timer to turn on the heating tomorrow morning, freezing prevention will be performed by low temperature operation from tonight until tomorrow morning, and then the operation mode will switch to high temperature. Heating will start.

<Example> Fig. 1 is an overall configuration diagram showing an example of the present invention, Fig. 2 is a flowchart showing an example of temperature control control, Fig. 3 is an electric circuit diagram of the remote control section and control section, and Fig. 4 is a flowchart showing a more specific example of temperature adjustment control during timer operation.

1 is a hot water storage can body, and the supplied water is heated in the can body 1 and stored therein. A burner 2 heats the hot water storage can 1. Hot water is supplied by adjusting high temperature water from the hot water storage can 1 and low temperature water from the water supply pipe to a predetermined hot water temperature set by an electric mixing valve 3. Heating is performed by circulating high-temperature water, which has undergone heat exchange in the hot water storage can 1, through a circulation path 4 to a radiator 6 at a destination by a circulation pump 5. 7 is a temperature detector for the hot water storage can 1.

In FIGS. 1 and 3, the remote control unit 8 includes an operation switch 9 of the hot water storage can 1 and its operation confirmation lamp 9as, a combustion confirmation lamp 10a for confirming the combustion state of the burner 2, and a combustion confirmation lamp 10a for confirming the combustion state of the burner 2. up temperature control switch 11,
Down switch 12 for lowering the hot water temperature, its temperature control setting circuit 13 and temperature control setting display lamp 14, low temperature operation switch 15 and its low temperature operation lamp 15a1 for freezing prevention, heating operation switch 16 and its heating operation confirmation A lamp 16a, a microcomputer (hereinafter referred to as microcomputer) 17 that determines whether to operate the hot water storage can body 1 at a high temperature or a low temperature and instructs the control unit 20, and the microcomputer 17.
There is a timer operation operation section 30 for causing heating operation to be performed using a timer. The timer operation unit 30 includes a sleep start switch 31 for stopping the heating after a predetermined time, a confirmation lamp thereof, and a sleep start switch 31 for stopping the heating after a predetermined time, and a confirmation lamp for starting the heating at a predetermined time and for a predetermined time (for example, one hour) from the start. A good morning start switch 32 and its confirmation lamp are provided to continue the morning, and a timer setting section 33 is provided to set the time.

The control unit 20 includes a power supply circuit 21 , a heating control circuit 22 that controls the driving of the circulation pump 5 , a combustion control circuit 23 that controls combustion of the burner 2 , a hot water storage can temperature adjustment circuit 24 that adjusts the temperature of the hot water storage can 1 , A high-temperature/low-temperature operation switching circuit 25 for switching the hot water storage can body 1 between high-temperature operation and low-temperature operation, an electric mixing valve temperature control circuit 26 for adjusting the hot water supply temperature by the electric mixing valve 3, and turning on the electric mixing pulp 3. , has an electric mixing valve drive circuit 27 that controls off-drive.

The hot water storage can 1 can be operated by turning on the operation switch 9. In this case, low temperature operation switch 1
5 is not on, the hot water storage can 1 is operated at high temperature. The temperature of hot water in the hot water storage can body 1 can be adjusted by inputting a temperature setting value into the hot water storage can body temperature adjustment circuit 24 using an adjustment knob (not shown), for example, and comparing it with temperature information from the temperature detector 7.
This can be done by turning on and off the combustion of the burner 2 via the combustion control circuit 23. Actually, the temperature of the hot water in the hot water storage can 1 is set in advance to be a constant value of, for example, 80°C during high-temperature operation, and to a constant value of, for example, 20°C during low-temperature operation, so that operation is performed at a constant temperature. be able to.

Hot water is supplied via an electric mixing valve 3 by opening a hot water outlet (not shown). To adjust the hot water temperature, use the temperature control switch 11 for up or the temperature control switch 1 for down.
2, the mixing rate of high-temperature water and low-temperature water by the electric mixing valve 3 can be changed from the temperature adjustment setting circuit 13 via the electric mixing valve temperature adjustment circuit 26.

The heating operation is normally performed by turning on the heating operation switch 16 and driving the circulation pump 5 via the microcomputer 17 and the heating control circuit 22.

In addition, low-temperature operation for freezing prevention is normally performed by turning on the low-temperature operation switch 15, which causes the microcomputer 17 to determine the low-temperature operation, and by switching the high-temperature/low-temperature operation switching circuit 25 to the low-temperature operation side, hot water storage is performed. Can temperature control circuit 24
The combustion of the burner 2 is controlled for low-temperature operation via the combustion control circuit 23.

In this case, if the microcomputer determines that low-temperature operation is to be performed, the electric mixing valve 3 is locked in the closed state by the electric mixing valve drive circuit 27 via the high-temperature/low-temperature operation switching circuit 25, and hot water cannot be supplied. . Note that the electric mixing valve 3 may be locked in the previously used position by the electric mixing valve drive circuit 27.

The heating operation using the timer can be performed by setting the timer using the timer operation operation section 30.

In this case, during the heating operation by the timer, the burner 2 is controlled for high-temperature operation by a command from the microcomputer 17 via the high-temperature/low-temperature operation switching circuit 25 and the combustion control circuit 23.

Further, the electric mixing valve 3 is maintained in a usable state via the high temperature/low temperature operation switching circuit 25 and the electric mixing valve drive circuit 27.

Next, an example of a program for automatic switching between high-temperature operation and low-temperature operation of the hot water storage can 1 by the temperature control device of the present invention by a microcomputer will be explained according to the flowchart of FIG.

Now, when the operation switch 9 of the hot water storage can 1 is on and the heating operation switch 16 is off, when the low temperature operation switch 15 is on, the operation is at low temperature, and when the low temperature operation switch is off, the operation is at high temperature.

When the operation switch 9 is on, the heating operation switch 16 is on, and the timer operation is not performed, in this case, when the low temperature operation switch 15 is on, the operation is at low temperature, and when the low temperature operation switch I5 is off, the operation is at high temperature. Driving.

When the operation switch 9 is on, the heating operation switch 16 is on, and the timer operation is being performed, in this case, while the heating operation by the timer is currently being performed, it is determined whether the low temperature operation switch 15 is on or off. Regardless, if heating operation is not currently being performed, if low temperature operation switch 15 is on, low temperature operation occurs, and low temperature operation switch 1 is activated.
When 5 is off, high temperature operation is performed.

The range shown by the one-dot chain line in FIG. 2 is a control flowchart during timer operation, and a more specific example of this part will be explained with reference to the flowchart in FIG. 4. That is, in FIG. 4, the timer operation is performed by pressing the sleep start switch 3.
1. When the good morning start switch 32 is turned on,
This is done by setting the time in the timer setting section 33. When the sleep start switch 31 is turned on and the timer is set, the sleep start lamp 31a is turned on and the timer operation is started. The high temperature operation is continued until the time set by the timer ends, regardless of whether the low temperature operation switch 15 is turned on or off. When the time set by the timer ends, the timer operation is ended, the sleep start lamp 31a is turned off, and the process proceeds to line B in FIG. On the other hand, when the good morning start switch 32 is turned on and the timer is set, the good morning start lamp 32a is lit.
Start timer operation. Then, until the time set by the timer or until the time comes, the low temperature operation switch 15
If the low temperature operation switch 15 is on, low temperature operation is performed, and if the low temperature operation switch 15 is off, high temperature operation is performed. When the time set by the timer arrives, the high temperature operation starts regardless of whether the low temperature operation switch 15 is turned on or off. Then, when a predetermined time (for example, one hour) has elapsed, the high temperature operation by the timer is ended, the timer operation is ended, and the good morning start lamp 32a is turned off, and the line B in FIG.
Proceed to.

Next, the lamp display when each of the above operations is performed will be explained.

First, when the operation switch 9 of the hot water storage can 1 is on, the confirmation lamp 9a is lit. When the burner 2 is burning, the combustion confirmation lamp 10a is lit. Even if the heating operation switch 16 is turned on, the heating operation confirmation lamp 16a does not necessarily light up. The heating operation confirmation lamp 16a is lit only when heating operation is actually being performed. On the other hand, if the low temperature operation switch 15 is on, the low temperature operation lamp 15a is lit even if high temperature operation is currently being performed. Further, the temperature control setting display lamp 14 of the electric mixing valve 3 lights up only when hot water supply is possible due to high temperature operation. Furthermore, good night start lamp 31a
The good morning start lamp 32a is lit only while the timer operation is being performed. Therefore, to summarize, on the premise that the operation confirmation lamp 9a is lit, confirmation that the low temperature operation is in progress can be performed by turning on the low temperature operation lamp 15a, and turning off the heating operation confirmation lamp 16a and the temperature control setting display lamp 14. Further, confirmation that the high temperature operation is in progress can be made by lighting the temperature control setting display lamp 14, regardless of whether the low temperature operation lamp 15a is turned on or off. It can be confirmed that the heating operation is in progress by lighting the heating operation confirmation lamp 16a. Of course, since the heating operation is also a high temperature operation, the temperature control setting display lamp 14 also lights up, indicating the usable state (hot water supply possible state) of the electric mixing lamp 3.

In addition to these, confirmation that the timer is in operation can be made by lighting up the good night start lamp 31a or the good morning start lamp 32a.

<Effects> The present invention has the above configuration, and in addition to the hot water supply function, it has a heating operation function using a timer, and can perform high temperature operation of the hot water storage can for hot water supply and heating, and low temperature operation for freezing prevention. A temperature control device for a water heater with a heating operation function, during heating operation by a timer, high temperature operation is performed regardless of whether the low temperature operation switch is on or off, and in other cases, if the low temperature operation switch is on. Since it is configured to operate at a low temperature regardless of whether the heating operation switch is on or off, especially when you want to perform a low temperature operation to prevent freezing after a heating operation using a timer, or vice versa, There is no need to switch operations each time, and the operation can be switched automatically. Therefore, for example, when a user uses a timer to run a heating operation at night during winter, if the user turns on the low temperature operation switch at the same time, the timer will automatically turn on the heating operation at the same time as the timer heating ends.
Since the operation mode is switched from high-temperature operation to low-temperature operation mode and antifreeze operation is performed, the trouble of waking up in the middle of the night to change the switch is eliminated. Also, if you turn on the low-temperature operation switch when setting the timer to turn on the heating tomorrow morning, antifreeze operation will be performed at night and heating operation will start in the morning, which is very convenient. be. In this way, the high temperature operation and low temperature operation of the hot water storage can can be automatically changed according to the intended use, which eliminates wasteful combustion of the burner, resulting in a large energy saving effect.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing an embodiment of the present invention, Fig. 2 is a flowchart showing an example of temperature control, Fig. 3 is an electric circuit diagram of the remote control section and control section, and Fig. 4 is during timer operation. It is a flow chart which shows an example of concrete temperature regulation control in . 1: Hot water storage can 3: Electric mixing pulp 6: Heat radiator -8: Remote control unit 9: Operation switch 9a: Operation confirmation lamp 14: Temperature control setting display lamp 15: Low temperature operation switch 15a: Low temperature operation lamp 16
: Heating operation switch 16a: Heating operation confirmation lamp 17: Microcomputer 20: Control section 30: Timer operation operation section 31: Good night start switch 31a: Good night start lamp 32: Good morning start switch 32a: Good morning start lamp 33: Timer setting section

Claims (5)

[Claims] (1) In addition to the hot water supply function that controls high-temperature water from the hot water storage can to a set temperature using an electric mixing valve and releases hot water, a timer setting allows the hot water that has been heat exchanged in the hot water storage can to be sent to a radiator. It has a heating operation function that can stop the circulation after a predetermined time, start the circulation from a predetermined time, or a combination thereof, and heat the hot water in the hot water storage can to a preset high temperature for the hot water supply and heating. A temperature control device for a water heater with a heating operation function, which is capable of high-temperature operation in which hot water is heated and maintained, and low-temperature operation in which hot water in a hot water storage can is heated and maintained at a low temperature to prevent freezing. During the heating operation using the timer, the low temperature operation is switched to high temperature operation regardless of whether the low temperature operation switch is on or off. Otherwise, if the low temperature operation switch is on, the heating operation switch is turned on or off. A temperature control device for a water heater with a heating operation function, characterized in that it is configured to operate at a low temperature regardless of whether the heating operation function is present or not. (2) If you turn on the sleep start switch to stop heating after a predetermined time while the heating operation switch is on, high temperature operation will continue during the timer setting time regardless of whether the low temperature operation switch is on or off. The temperature control device for a water heater with a heating operation function according to claim 1, wherein after the set time has elapsed, if the low temperature operation switch is on, the low temperature operation is performed, and if the low temperature operation switch is off, the high temperature operation is performed. (3) With the heating operation switch on, if you turn on the good morning start switch to start heating at a predetermined time and continue heating for a predetermined period of time from the start, the low temperature operation switch will be switched on during heating by the timer. The scope of the patent claims is that high-temperature operation is performed regardless of whether or not the heating is turned on or off, and that before heating starts and after heating by the timer, low-temperature operation is performed if the low-temperature operation switch is on, and high-temperature operation is performed if the low-temperature operation switch is off. The temperature control device for a water heater with a heating operation function according to item 1 or 2. (4) During high-temperature operation, the temperature control setting display lamp of the electric mixing valve lights up to indicate the usable state of the electric mixing valve, and during heating operation, in addition to the lighting of the electric mixing valve temperature control display lamp, the temperature control setting display lamp of the electric mixing valve lights up. Claims 1 to 4 indicate that the heating operation is in progress by lighting a heating operation confirmation lamp regardless of whether the operation lamp is lit, and indicate that the timer operation is in progress by lighting the timer operation lamp during the timer operation. The temperature control device for a water heater with a heating operation function according to item 3. (5) A heating operation function according to claim 4, which lights up the good morning start lamp when the timer is running with the good night start switch on, and lights up the good morning start lamp when the timer is running with the good morning start switch on. Water heater temperature control device.