JPH0814416B2 - Water heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention is used in a so-called telecontrol system in which a general telephone line is used to control a device such as a water heater at home from outside with a telephone. The present invention relates to a hot water supply device capable of

2. Description of the Related Art In recent years, as one of home automation systems, a telecontrol system has become widespread in which a general subscriber telephone line can be used to control an abnormality monitor at home, electric appliances, outlets, etc. with a telephone from outside. .

There is a telecontrol system for water heaters as shown in Fig. 4. In FIG. 4, 1 is a telecontrol unit connected to a general telephone line, 2 is a telecontrol interface connected to the telecontrol unit 1, 3 is a water solenoid valve provided in the water passage of the water heater 4, and 5 is A water amount sensor, 6 is a constant water amount device. Reference numeral 7 is a gas solenoid valve in the gas passage, and 8 is a gas amount adjusting device. 9
The flame rod 11 for detecting combustion is a spark plug of the burner 10, and 12 is an exhaust fan. Reference numeral 13 is a control device for the entire water heater 4, which is connected to the telecontrol interface 2. (Hereinafter, the tele-control interface is abbreviated as tele-control interface.) FIG. 5 shows an outline of the flow of hot water supply by tele-control. When the telecontrol unit 1 which receives the control signal from the general telephone line by the telephone transmits the control signal to the telecon interface 2 provided in the water heater 4, the telecon interface 2 transmits the control signal to the control device 13. The control device 13 that has received the control signal opens the water solenoid valve 3 and causes water to flow through the water passage of the water heater 4.
When a signal indicating that the amount of water flowing exceeds the ignition water amount is received, the exhaust fan 12 is operated, the spark plug 11 is discharged, the gas solenoid valve 7 and the gas amount adjusting device 8 are opened, and the burner 10 is ignited. When the ignition operation is completed and the ignition of the burner 10 is detected by the flame rod 9, the control device 13 sends a combustion signal to the teleconverter interface 2 and shifts to the normal sequence. Then, the combustion signal to the tele-control interface 2 is transmitted from the tele-control interface 2 to the tele-control unit 1, and the user who makes a phone call from the tele-control unit 1 through the general telephone line on the voice monitor that the device is burning. Can be confirmed.

On the other hand, when ignition cannot be detected by the frame rod 9, the control device 13 shifts to the non-ignition sequence and at the same time closes the water solenoid valve 3 and transmits an instrument stop signal to the teleconverter interface 2. This control signal is sent from the telecon interface 2 to the telecontrol unit 1
Then, the user who made the call can confirm from the tele-control unit 1 that there is no burning on the voice monitor through the ordinary telephone line. The same applies when the fuel is burning normally, when a reset signal for stopping the burning is input for some reason, or when water has entered until the set time.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a configuration, for example, when hot water is supplied to the bathtub by a telephone from the outside, if the person A in the house first performs hot water control on the bath by the telephone, Since the appliance is burning, person B in the house can later know that the appliance is moving on the telephone line by the telephone. However, if the above-mentioned control takes a while until the hot water is supplied to the equipment and the equipment stops, the equipment will be in the same state as before the hot water supply, and person C who does not know this will issue a hot water supply control command through the telephone line. It will be possible to issue it again,
And when you move the equipment, the hot water overflows from the bathtub.

The present invention solves such a drawback, and after operating the device once, when the predetermined water amount is detected and the predetermined water amount is not reached, the device can be operated by receiving a signal from a telephone or the like. , If the detected water volume exceeds a certain level, stop the operation of the equipment, and unless the equipment is reset by a signal other than the telephone, the equipment will not operate again with the signal from the telephone, and the amount of hot water supplied to the bathtub etc. will be constant. It prevents the water from overflowing.

Means for Solving the Problems In order to solve the above problems, a water heater according to the present invention supplies a heat generating device that supplies heat necessary for raising a water temperature, and heat generated by the heat generating device to water. A heat exchanger, a water amount adjusting device for adjusting the amount of water flowing through the heat exchanger, a water amount detecting device for detecting the water amount, a water amount integrating means for integrating the water amount with a signal from the water amount detecting device, and each of the devices. And a control device capable of controlling each device by a signal from a general subscriber telephone line, and a control device for changing the method of the control device according to a signal from the water amount integrating device.

According to the present invention, when the control device is moved by the signal from the general subscriber telephone line by the above-mentioned configuration, the water amount integrating means for integrating the water amount by the signal from the water amount detecting device is used, and the signal from the water amount integrating means is set. If it is less than the amount, you can operate the appliance from the general subscriber telephone line as many times as you want, but if the signal from the water accumulation means reaches the set amount, you can operate the appliance again using the general subscriber telephone line. Must be reset by a signal other than the above. Therefore, if a certain amount of water such as a bathtub is supplied, the equipment cannot be operated by the general subscriber telephone circuit or the like, so that the water will not overflow.

Embodiment A water heater according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a telecontrol unit connected to a general telephone line, 5 is a water amount sensor as a water amount detecting device provided in a water passage 5a, and 6 is a constant water amount device. Reference numeral 7 is a gas solenoid valve of the gas passage 7a, and 8 is a gas amount adjusting device. Reference numeral 9 is a flame rod for detecting combustion, 11 is a spark plug of a burner 10 as a heat generating device, and 12 is an exhaust fan. Reference numeral 14 is a water amount proportional valve for changing the amount of water by a motor, and is provided in the hot water supply passage 14a. Reference numeral 15 is a control device for the entire appliance, which includes a water amount integrating means 21, a control means 22, etc., which will be described later,
It is connected to the telecontrol unit 1. Reference numeral 20 is a heat exchanger heated by the burner 10.

FIG. 2 shows an outline of the flow of hot water supply by telecontrol.

The telecontrol unit 1 which receives the control signal from the ordinary telephone line by the telephone sends the control signal to the control device 15. Upon receiving the control signal, the control device 15 opens the water amount proportional valve 14 and causes water to flow. When the controller 15 receives a signal from the water amount sensor 5 that water is flowing more than the amount of ignition water, the exhaust fan 12 is activated, the spark plug 11 is discharged, and the gas solenoid valve 7 and the gas amount adjusting device 8 are opened. Ignite burner 10.

After the ignition operation is completed, the burner is driven by the frame rod 9.
If the ignition of 10 is detected, the control device 15 determines that the water amount sensor 5
With the signal from, the water amount integrating means 21 starts the water amount integration. Further, the control device 15 transmits a combustion signal to the telecontrol unit 1 and shifts to a normal sequence such as hot water temperature control. Then, if the amount of water integrated by the water amount integrating means 20 does not reach the set amount of water, or if the reset signal for stopping the combustion is not input, this routine is repeated. The combustion signal transmitted to the tele-control unit 1 informs the user making a call that the appliance is burning through a voice monitor through a general telephone line.

When the amount of water accumulated by the water amount accumulating means 21 reaches the set amount of water, the control device 15 stops the device, outputs a signal indicating that the device is stopped to the telecontrol unit 1, and reaches a certain amount of water. Is output.

Fig. 3 shows the concept of the water amount integrating means 21.
A microcomputer 16 is used as the water amount integrating means 21.
As described with reference to the flow shown in FIG. 2, when the flame rod 9 detects the ignition of the burner 10, the signal from the water amount sensor 5 is supplied to the I / O of the microcomputer 16 by the functions of the comparator 17 and the NPN transistor 18. Input from the department. This input signal is the microcomputer 16
It is integrated in the calculation unit (described below with the microcomputer 16). Further, the ROM portion of the microcomputer 16 stores in advance data of an integrated amount corresponding to the automatic hot water supply amount set by a remote controller or the like. The microcomputer 16 integrates the signal from the water amount sensor 5 and the integrated amount data stored in the ROM portion of the microcomputer 16 and compares the integrated amount of the signal from the water amount sensor 5 with the ROM portion data. If it is the same, it is determined that the set automatic hot water supply is completed.

Further, in FIG. 3, a signal from the telecontrol unit 1 is input to the I / O portion of the microcomputer 16 by a phototransistor 19. This input is controlled by the control means 22. The control means 22 determines that the automatic hot water supply is completed when the integrated amount from the water amount sensor 5 and the ROM part data become the same, and at this time, the signal from the telecontrol 1 is sent to the I / O part of the microcomputer 16. The microcomputer 16 is operated so that further input cannot be made.

In order to operate again with the signal from the tele control unit, it is programmed in the microcomputer that it needs to be reset by, for example, a remote controller other than the tele control unit.

Further, the above contents are output to the telecontrol unit 1 via the I / O unit of the microcomputer 16 and the phototransistor 19a.

By the above operation, when the set amount of water is reached, an equipment stop signal and a hot water supply completion signal are output to the telecontrol unit 1, and the equipment is stopped by the voice monitor through the general telephone circuit and the hot water supply is also completed. The user who made the phone call.

Even if a person other than the one who has instructed automatic hot water supply by tele control tries to perform automatic hot water supply again by tele control, unless the I / O unit of the microcomputer 16 is reset by a remote control other than the tele control, for example, the tele control unit Do not accept the signal. Therefore, the hot water cannot be supplied again, so that the water does not overflow.

When ignition cannot be detected by the frame rod 9, the control device 15 shifts to the non-ignition sequence and at the same time transmits an instrument stop signal to the telecontrol unit 1. This control signal informs the user making a call from the telecontrol unit 1 that the device is stopped on the voice monitor through the ordinary telephone line. This time,
It takes only about 8 seconds to detect misfire, so almost no water accumulates in the bathtub. Also, the ROM of the microcomputer 16
Since the unit data and the integrated value of the signal from the water amount sensor 5 are not the same, the I / O unit of the microcomputer 16 can automatically supply hot water again by the signal from the telecontrol.

Also, if the combustion is stopped normally for some reason and the set water amount has not been reached, the same as above
Until the data of the I / O unit and the integrated value from the water amount sensor 5 become equal, automatic hot water supply can be performed from the telecontrol, and a fixed amount of automatic hot water supply can be performed.

Further, the operation after performing the constant amount of hot water supply is as described above.

Advantageous Effects of Invention As described above, the present invention integrates the hot water supply amount by the water amount integrating means operated by the signal from the water amount sensor when the main body of the person at home operates the automatic hot water supply through the telecontrol, and When the set water amount is reached, the control device notifies that the automatic hot water supply is completed through the general subscriber telephone line.

In addition, when the water volume accumulated by the water volume accumulation means by the control means reaches the set water volume, it is impossible to operate from the telecontrol, so another person mistakenly tried to operate via the telecontrol. However, since the device does not receive the signal and does not automatically supply hot water again, the hot water will not overflow.

Furthermore, if the water amount accumulated by the water amount accumulating means does not reach the set water amount, the control means operates so as to receive the signal from the telecontrol, so that the water amount up to the set amount can be reliably instructed by the telecontrol. It has the effect of being able to supply hot water.

[Brief description of drawings]

FIG. 1 is a block diagram of a hot water supply device according to an embodiment of the present invention, FIG. 2 is a schematic view of hot water supply by telecontrol, FIG. 3 is an explanatory view of water amount integration, and FIG. 4 is a conventional hot water supply device. FIG. 5 is a schematic diagram of a conventional hot water supply flow by telecontrol. 5 ... Water amount detecting device, 10 ... Heating device, 15 ... Control device, 21 ... Water amount integrating means, 22 ... Control means.

Claims (1)

[Claims] 1. A heat generating device for supplying heat necessary for raising the water temperature, a heat exchanger for supplying heat generated by the heat generating device to water, and a water amount adjusting device for adjusting the amount of water flowing through the heat exchanger. A water amount detecting device for detecting the water amount, a water amount accumulating means for accumulating the water amount by a signal from the water amount detecting device, and controlling each device, and also controlling each device by a signal from a general subscriber telephone line. A hot water supply apparatus comprising: a control device capable of controlling the temperature and a control means for changing a control method of the control device according to a signal from the water amount integrating means.