JPH0692817B2 - Teleconverter control device for combustion equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to remote control by a telephone of a combustion device that uses gas, oil or the like as a fuel by using a telephone line for general subscribers, and an operation monitor check of these. The present invention relates to a telecontrol system (hereinafter referred to as a teleconverter control device).

2. Description of the Related Art Conventionally, combustion equipment that uses gas, oil, or the like as fuel has a large operating energy, so that if an accident should occur, the damage scale will be large. Therefore, it is obligatory by law to install a confirmation window on the combustion equipment to visually confirm the disaster, or to install a lamp to indicate the ignition status. On the other hand, various measures such as outdoor installation as a means to further improve the safety of the combustion equipment, a new exhaust combustion fan, a method of igniting after complete pre-purge, and an acceleration of ignition detection response by a frame rod are taken. The safety has been dramatically improved.

This means that the time from the ignition operation until the burner is actually ignited and the combustion starts is longer than that of a manual ignition type device because a series of sequences such as pre-purge is included, which causes inconvenience in usability. Direction,
Actually, the inconvenience in practical use has been solved because the electronic controller is installed to achieve automatization.

A conventional example in which a combustion device having a combustion controller for performing such a series of ignition sequences is teleconverter controlled by using a telephone line for general subscribers will be described with reference to FIGS. 4 and 5.

In FIG. 4, 1 is a telephone as an operation terminal, 2 is a telephone line for general subscribers, 3 is a residence of a resident, 4 is a teleconverter controller, 5 is a controlled device, and in the present invention, a teleconverter signal to a combustion device. And an input / output terminal 6 having three terminals a, b, and c. Reference numeral 7 is a combustion device, and 8 is a heat exchanger, which is a central hot water supply heat exchanger of the present invention. Water is supplied from an inlet 8a and hot water is discharged from the outlet 8b as hot water. Reference numeral 9 is a burner, 10 is a combustion fan, 11 is a solenoid valve for controlling fuel such as gas, 12 is a frame rod serving as a sensor for detecting ignition of the burner 9, and 13 is a combustion controller. The combustion controller 13 includes a solenoid valve driver 14 and an ignition detector.
It has 15, a fan driver 16, a sequencer 18, and is equipped with connection terminals a, b, c for connection with the interface 5. Reference numeral 20 is a signal transmission / reception means, and a three-core cable is shown in the drawing. The teleconverter controller 4 has a switch group 21 so that the controlled device can be turned on and off manually, 22 is an operation switch of the combustion device 7, and the ignition state can be identified by a lamp 23. 24 is an operation switch for other controlled equipment, the output of which can be taken out at the input / output terminal 25 of the interface 5,
It can be controlled by other devices.

The operating state in the configuration of FIG. 4 is shown in FIG.
The conventional example will be described with reference to FIGS.

First, by operating the telephone 1 in a specified order, a signal from the input / output terminal 6 of the interface 5 is taken out via the teleconverter controller 4. The terminal a is its control signal waveform, which is the one-shot pulse waveform (time Δt) shown by the a control signal in FIG. The sequencer 18 outputs this control signal a
At t ₁ , the receiving combustion device 7 starts operating. First fan
The rotation of 10 starts the pre-purge operation for discharging the residual gas in the heat exchanger 8. Subsequently ignited by an igniter (not shown) or the like is supplied fuel opens the solenoid valve 11 at time t _2. At time t ₃ , the flame rod 12 detects and the ignition detector 15 outputs. Thus, although up to the time 0 to t ₃ is in operation equipment, sequencer 18 since no ignition is "period during ignition ready", it is impossible to return the monitor signal from the b of the terminal 19. This means that the telephone 1, which is the operation terminal, is in a non-responsive state, and it is unknown whether the combustion device 7 is about to operate properly. In which first time monitor signal b can be confirmed by specifying the audio phone 1 issues an output in the subsequent time t _3. Next, by operating the telephone 1 in accordance with the predetermined procedure, a one-shot waveform (time Δt) at time t ₄ shown in FIG. 5 appears as a control signal at the terminal a of the interface 5, and the sequencer 18 The combustion equipment 7 stops operating after the waveform is identified. From the above, the time A in FIG. 5 is the mode in which the equipment is operating, and the period B is the mode in which the burner is igniting and burning, and the output from the terminal 19b is output as a monitor signal. Period C is preparing for ignition. The cable 20 in the figure shows a three-core type, and
Indicates a control signal transmission, b indicates a monitor signal transmission, and c indicates a common terminal thereof. Teleconverter controller 4
Reference numeral 26 denotes a mode selector, which pushes the selector 26 during telecon control and releases the push of the selector 26 when manual operation is required.
The combustion device 7 can be controlled by turning on and off 22, and the ignition state can be displayed by the lamp 23. The waveform of each part in this case is exactly the same as that of FIG. 5, and instead of the operation of the telephone 1, the same signal as this is obtained by the operation switch 22.
Is configured.

Problems to be Solved by the Invention There are the following problems when performing tele-converter control using a conventional combustion device.

(1) When the combustion device is remotely controlled by the telephone from outside, the answer (monitor signal) in the ignition state is delayed, which causes a problem of causing the user to feel uneasy. Especially in the past, there was a user inside the house and there was a combustion device nearby, so even if the combustion state monitor (lighting of the ignition lamp) was delayed, it could be found immediately and appropriate measures could be taken, so it was not a big problem. In the case of teleconverter control, it is necessary to take some measures to prevent anxiety.

(2) In combustion equipment, an ignition preparation period such as pre-purge is indispensable in order to eliminate the risk of explosive ignition at the time of ignition, and it is difficult to shorten the time to ignition. Furthermore, in the case of kerosene fuel, it may take several minutes before ignition including preheating vaporization such as preheating. In this way, when controlling the teleconverter in the combustion equipment, after operating the telephone 1 to connect the telephone line, it is necessary to wait until the telephone line is connected for a long time until the ignition confirmation answer (monota signal) is received. is there. As a result, the line usage fee and the telephone fee are increased, and other telephone calls are also adversely affected.

Means for Solving Problems The present invention takes the following means in order to solve the above-mentioned conventional problems.

(1) Since a monitor signal is output even during ignition preparation, a pseudo ignition timer is provided in the combustion controller, and this output is returned to the teleconverter controller via the interface.

(2) The logical sum (OR) of the output of the pseudo ignition timer and the output of the ignition detector is taken as the monitor signal.

(3) Ignition safety timer essential for combustion equipment, that is, a pseudo ignition timer that also serves as an ignition safety timer that keeps safety by stopping the solenoid valve if ignition does not occur during this trial period Is to

(5) The output waveform of the pseudo ignition timer is different from the output waveform of the ignition detector.

Action (1) By returning the monitor signal by the pseudo ignition timer, it is possible to immediately confirm whether or not the combustion device has started to operate by the telephone. In addition, it works so that you can judge the telephone line for a long time without waiting in a call state, and the official ignition monitor disconnects the call state once,
It works so that the telephone can be redone and the monitor can be used again.

(2) The logical ignition of the output of the pseudo-ignition timer and the output of the ignition detector acts to facilitate the realization.

(3) By also being used as the ignition safety timer, the number of parts can be reduced and the size and reliability can be improved.

(4) Since the waveform of the pseudo ignition output and the output waveform of the ignition detection are different, the waveform can be identified by the teleconverter controller, and the operation state from the outside can be identified by returning to the telephone by separate voice etc. As a result, it acts to give the user a sense of security.

Embodiment An explanation of the operation will be added based on FIGS. 1, 2 and 3 which are embodiments of the present invention.

FIG. 1 is a system diagram of a teleconverter control device for combustion equipment, and is basically the same as FIG. 4 of a conventional example. Therefore, the same parts are given the same numbers. The difference between the present invention and the conventional example is that the combustion controller 13 housed in the combustion device 7 is additionally provided with a pseudo ignition timer 17, and the other parts are the same as those of the conventional example. Omit it.

In FIG. 2, when the telephone 1 is operated in the specified order, a one-shot control signal waveform is obtained at the teleconverter controller 4 and the terminal 6a of the interface 5. The sequencer 18 detects this waveform and the combustion controller 13 Start operation. Therefore, from time t ₁ , the equipment state starts to operate, the fan 10 rotates, and after the pre-purge, the solenoid valve 11 opens and the ignition operation starts. If the flame rod 12 detects a flame at time t ₃ , the ignition detector 15 gives an output. The point intended by the present invention is that the pseudo ignition timer 17 outputs an output for a specified period (t ₁ to t ₅ period in the figure) when a control signal is input and the sequencer 18 detects the output and the ignition of the pseudo ignition timer 17. The output of the detector 16 is ORed and output as a monitor signal b from the sequencer 18 and the combustion controller 13
It is sent back from the terminal 19b to the terminal 6b of the interface 5. As a result, at the time when the combustion device 7 is activated by the operation of the telephone 1, the period c
Since the pseudo ignition output is output, the operating state will be answered. Of course, the time t ₅ and later, a formal ignition detection output is monitored confirmation.

FIG. 3 shows another embodiment, and the part different from FIG. 2 is that the pseudo ignition timer 17 has an oscillating structure for emitting intermittent pulses. Therefore, the waveform of the monitor signal b is switched as a continuous waveform when the intermittent pulse is returned as the ignition is being prepared and the ignition detector 15 detects ignition.

Therefore, since the interface 5 and the teleconverter controller 4 identify these waveforms, the period c is in the pseudo-ignition mode, so that, for example, the voice return to the telephone 1 is “driving”, and then the period B In the burning mode, by setting "Ignite" as a voice return, it is possible to identify the contents of the operating state of the device via the telephone 1.

As another modified example, one timer function can be omitted by also using the ignition safety timer of the ignition trial shown in FIG. 5 of the conventional example, and by making this period the output of the pseudo ignition timer.

EFFECTS OF THE INVENTION (1) By returning the monitor signal immediately by the pseudo ignition timer, the operation confirmation of the combustion equipment is accelerated at the telephone terminal, and as a result, it is not necessary to stand by in a call state for a long time. In addition, formal ignition monitoring is possible by making a call again, which has the effect of reducing call charges and avoiding confusion on the line.

(2) The logical sum of the output of the pseudo ignition timer and the output of the ignition detector is used as the monitor signal, which has the effect of greatly simplifying the configuration.

(3) By setting the waveform of the pseudo ignition output and the waveform of the ignition detector to be different from each other, it is possible to identify the waveform by the teleconverter controller, and it is possible to determine the operating state of the device by the telephone.

(4) By using both the ignition safety timer and the pseudo ignition timer, the number of timers can be reduced and the combustion controller can be simplified.

(5) In the pre-purge or the combustion equipment in which the ignition preparation period such as the preheating time for kerosene inevitably becomes long, by returning the monitor with the pseudo output as in the present invention,
It is possible to monitor the status quickly and comfortably by using a telephone that is operated at a remote place, without anxiety.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a teleconverter control device for a combustion device which is an embodiment of the present invention, FIG. 2 is an operation waveform diagram of an embodiment of the present invention, and FIG. 3 is an operation of another embodiment of the present invention. Waveform diagram, FIG. 4 is a circuit diagram of a teleconverter control device for combustion equipment of a conventional example, FIG.
The figure is an operation waveform diagram of a conventional example. 1 ... Telephone, 4 ... Teleconverter controller, 5 ... Interface, 13 ... Combustion controller, 16 ... Ignition detector, 17 ...
Pseudo-ignition timer, 20 ... Signal transmission / reception means.

Claims (3)

[Claims] 1. A telephone which is connected to a telephone line and serves as an operating terminal of a combustion device, a teleconverter controller which is connected to the telephone line and installed in a resident's house, and an output of the teleconverter controller is burned. An interface for distributing a signal to each controlled device including a device, a combustion device including a combustion controller for shifting to a normal operation after a series of ignition sequences, and a signal transmission / reception means connecting the interface and the combustion controller. At the same time, the combustion controller has a pseudo ignition timer that starts operation from the time of receiving the operation signal of the telephone via the teleconverter controller and the interface and turns off after a predetermined time, and transmits the operating state (monitor) of the combustion equipment. A teleconverter control device for combustion equipment, wherein a signal is a logical sum of an output of an ignition detector and an output of the pseudo ignition timer. 2. A combustion apparatus according to claim 1, wherein the pseudo ignition timer is used as both a predetermined time timer for turning off after a predetermined time and an ignition safety timer for performing a predetermined time ignition trial. Teleconverter control device. 3. The combustion controller according to claim 1, wherein the output waveform of the pseudo ignition timer is a pulse waveform and the output waveform of the ignition detector is a constant voltage waveform, which are different waveforms. Teleconverter control device for combustion equipment.