JPH0745934B2 - Combustor Telecon Interface - Google Patents

Description

Description: INDUSTRIAL APPLICABILITY The present invention can be used for a so-called telecontrol system in which a general telephone line is used to control a gas combustion device at home or the like from outside by telephone. The present invention relates to a telecom interface of a gas combustion device.

2. Description of the Related Art In recent years, as one of home automation systems, a telecontrol system has been becoming widespread, which is capable of controlling an abnormality monitor at home, electric appliances, outlets, etc. by telephone from outside using a general subscriber telephone line. , Telecontrol of gas combustion equipment is not yet common.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the current telecontrol system, for example, after a control signal for device control is transmitted from the telecontrol unit, a monitor signal indicating that the device is activated within two seconds is transmitted to the telecontrol unit. There is a tele control system that does not return a voice monitor that says that it is operating even if the equipment operates if it does not.

However, in the case of the gas combustor, the gas does not reliably burn within 2 seconds. For example, when using a water heater in the gas combustion device of this system, the electromagnetic valve for hot water is operated by the telecon interface, and the water heater is operated by flowing water inside the water heater. Since it takes several seconds to ten and several seconds, there is a problem that the operation of the water heater and the sound monitor do not match if the monitor signal is transmitted after detecting the combustion signal of the water heater.

Therefore, there is also a method of sending a monitor signal at the same time as the solenoid valve is activated, but in the case of water interruption, the water heater does not operate at all even if the solenoid valve operates, so the operation of the water heater and the voice monitor may not match. Become.

The present invention solves such a problem, and after the completion of the ignition operation of the gas combustion device, the operation state of the gas combustion device and the operation confirmation voice monitor by telecontrol always match and the correct operation state of the gas combustion device. It provides a teleconverter interface of the combustion device that can be confirmed.

Means for Solving the Problems The combustion device telecon interface of the present invention includes a telecontrol unit and a combustion device that are connected to a general subscriber telephone line and that can control voice and monitor the operating condition of the combustion device by a telephone such as a touch-tone telephone. Relay, activate the combustion device by the control signal from the telecontrol unit,
During the ignition operation, a monitor signal is sent to the telecontrol unit during the ignition operation to determine whether the ignition is not ignited or the combustion is being performed.After the ignition operation for a predetermined period of time, the combustion signal from the combustion device is confirmed. It is provided with means for outputting a monitor signal.

Operation The combustion device teleconverter interface of the present invention operates the combustion device in response to a control signal from the telecontrol unit, and at the same time, the ignition operation surely ends the monitor signal during the ignition operation of unignition or ignition combustion to the telecontrol unit. For a period of, for example, about 30 seconds, then continue to check the operating state of the combustion device by the presence or absence of a combustion signal.When the combustion signal from the combustion device is confirmed, the monitor signal after ignition operation is transmitted. If the ignition signal is not ignited and the combustion signal from the combustion device does not exist, the monitor signal transmission is stopped. Therefore, the monitor signal must be transmitted within 2 seconds from the control signal transmission from the telecontrol. Must be accurate in the combustion device 30 seconds after the ignition operation is completed after the combustion device is activated. Operating state is can be confirmed by Tele control.

Embodiment Hereinafter, a gas combustion apparatus teleconverter interface according to an embodiment of the present invention will be described with reference to the drawings. First
The figure is a block diagram of a telecontrol system using the telecon interface 1 of the gas combustion apparatus of the present invention,
FIG. 2 is a circuit diagram showing a part of the main control circuit 2, the timer circuit 3, and the combustion signal control circuit 4.

In FIG. 1, a telecontrol unit 5 and a gas combustion device 6 are connected to the gas combustion device telecon interface 1, and when the gas combustion device 6 is a water heater, an electromagnetic valve 7 is also connected. Taking the case where the gas combustion device 6 is a water heater as an example, the first
This will be described with reference to FIGS.

The gas combustion device teleconverter interface 1 performs control for transmitting and receiving signals to and from the telecontrol unit 5, a monitor signal interface 8, a solenoid valve 7, an operation switch control circuit (hereinafter referred to as an operation SW control circuit) 9, a timer circuit 3,
Main control circuit 2 for controlling temperature control circuit (hereinafter referred to as temperature control circuit) 10 and the above circuit controlled by main control circuit 2, combustion signal control circuit 4, power supply signal control circuit
It is composed of 11.

When the monitor signal interface 8 receives the control signal of the start instruction for operating the gas combustion device 6 (water heater) from the telecontrol unit 5 by the telecontrol, and the monitor signal interface 8 receives the control signal 12, the control signal 12 is processed by the main control circuit 2 and the transistor 13 is processed. When turned on, the relay 14 operates to open the solenoid valve 7. At the same time, a current flows through the light emitting portion of the photocoupler 15 and the timer circuit 3 operates. When the solenoid valve 7 is opened, water flows into the gas combustion device 6 (water heater), the flow switch of the gas combustion device 6 is turned on, and the exhaust gas exhaust fan operates to start the ignition operation.

On the other hand, when the timer circuit 3 starts operating, the input of the comparator 16 is
Since the other input voltage is higher than the reference voltage input by the resistors 17 and 18, the output of the comparator 16 is Lo (low) and current flows through the light emitting part of the photocoupler 21 to turn on the light receiving part. Therefore, the main control circuit 2 is in a state in which the gas combustion device 6 has not been ignited and the monitor signal 22a during the ignition operation is transmitted. After that, the negative side input voltage of the comparator 16 decreases due to the time constant of the timer circuit, and when it decreases to the reference voltage, the comparator 16
Output becomes Hi. This time is about 30 seconds, and the transmission of the monitor signal 22 is continued regardless of the presence or absence of the combustion signal. The combustion signal 23 is Hi if ignition combustion is performed at this point in time when the ignition operation of the gas combustion device is completed, and is Lo when the ignition is not successful because the point ignition has failed or when the ignition operation is not performed. If burning, the transistor 24 is turned on, and the monitor signal 22b indicating burning is continued even after the timer time has elapsed. If not ignited or inoperative, the photocoupler 21 is turned off at the same time as the timer elapses, and the transmission of the monitor signal 22a during the ignition operation, which has been transmitted so far, is stopped.

As described above, the timer circuit 3 and the combustion signal control circuit 4 for about 30 seconds are provided, and after the gas combustion device 6 is activated, the monitor signals 22a and 22b are forcibly transmitted during the ignition operation, and the ignition operation is performed. It is possible to confirm whether it is ignited and burned, not ignited, or inoperative in the confirmation 30 seconds after the ignition operation is completed by making an audio monitor that it is not igniting or operating during igniting combustion. The operating status can be monitored by voice.

As described above, according to the present invention, when the gas combustion apparatus is operated by the telecontrol, the means for transmitting the monitor signal during the ignition operation of the non-ignition or the ignition combustion to the telecontrol unit during the ignition operation and the predetermined time. After the ignition operation is completed, by providing means for outputting a monitor signal during combustion after the ignition is completed only when the combustion signal from the combustion apparatus is confirmed, after the ignition operation is completed, the combustion operation state and the monitor signal of the combustion apparatus are Therefore, when the operating state of the combustor such as a water heater at home is confirmed by a telephone from an outside place, it can be surely confirmed and can be correctly controlled.

[Brief description of drawings]

FIG. 1 is a block diagram of a telecontrol system using a teleconverter interface of a gas combustion apparatus according to an embodiment of the present invention, and FIG. 2 is a partial circuit diagram of the gas combustion apparatus teleconverter interface. 7 ... solenoid valve, 15 ・ 21 …… photo coupler, 16 …… comparator, 12 …… control signal, 22 …… monitor signal.

Claims (1)

[Claims] 1. A general control telephone line is connected, a communicator is relayed with a telecontrol unit capable of voice monitoring the control and operating state of the combustor by a telephone, and the combustor is activated by a control signal from the telecontrol unit. Then, when the ignition control is transmitting a monitoring signal indicating whether the ignition is not ignited or ignited to the telecontrol unit during the ignition operation, and after confirming the combustion signal from the combustion device after the ignition operation for a predetermined period of time, the combustion after the ignition operation Combustion device tele-con interface that outputs the inside monitor signal.