JP2003021331A - Starting device of appliance interlocked with ignition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low cost starting device of an appliance interlocked with an ignition device, in which an ignition action can be detected surely, and wiring or piping to peripheral devices is eliminated. SOLUTION: A noise receiver of an actuator B receives a spark noise D generated in discharge sparks of a discharging electrode A for igniting the burning appliance. Waveform of received spark noise D is shaped, and the pulse is counted to compute the pulse frequency. When the frequency agrees with frequency of discharge by the ignition device, it is recognized that the ignition device has actuated, and actuation signals are transmitted from an actuation signal-output device to a peripheral device C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting device for a device, and more particularly to a starting device for starting peripheral devices in synchronization with ignition operation of a combustion device.

[0002]

2. Description of the Related Art Conventionally, various means have been proposed for starting a ventilation fan in conjunction with the operation of a gas stove or the like in a kitchen. A method that detects the mechanical operation of the ignition control knob of the gas stove and sends it to the ventilation fan as an electric signal, or optically detects the spark light of the ignition device and the ultraviolet rays of the combustion flame after the stove is ignited, and based on the detection signal A method of transmitting a start signal is known. In these conventional examples, it is necessary to arrange a means for detecting the operation of the ignition device or the combustion device in or near the combustion device, and it is necessary to wire a signal line to peripheral devices such as a ventilation fan that are activated in conjunction with each other. there were. Furthermore, in the case of the optical detection means in the gas stove,
There are problems that detection is difficult due to the cooking container placed on the gas stove, and that detection of ultraviolet rays becomes difficult due to internal flame of the burner.

In recent years, system kitchens have been put on the market in which the user can select the constituent units. In such a system, the distance between the installation position of the ignition detection means and the peripheral equipment such as the ventilation fan cannot be set uniformly, so that wiring work is required. There is a problem that it becomes complicated and the simple wiring is not preferable in appearance. As a means for eliminating such inconvenience, the applicant has disclosed in Japanese Patent Laid-Open No. 11-141936, a ventilation fan in which an expandable and contractible support member is extended from a ventilation device and a combustion detection sensor held at the tip of the support member faces a gas stove. I propose a starter.

Further, there is also known an interlocking device by wireless communication in which a cooking appliance such as a gas stove is provided with a transmission section for transmitting an infrared signal corresponding to a detection signal of the combustion detection means and a reception section is provided in the operation control means of the ventilation fan. There is. However, the area around the gas stove is easily soiled by spills and the like, and there is a disadvantage that the transmitter is contaminated and the infrared signal is blocked. Applicant is Japanese Patent Laid-Open No. 1
In 1-141935, we propose an interlocking system that wirelessly communicates with the receiving part on the ventilation fan side by installing the transmitting part that sends the operation command signal of the ventilation device based on the signal of the combustion operation detection means of the gas stove in a place where there is no risk of getting dirty. is doing. However, such a method requires wiring between the detection means and the transmitter, and the transmitter and the receiver are indispensable, which limits the cost.

[0005]

In view of the above-mentioned inconvenience of the conventional interlocking system of the combustion device and the peripheral equipment, an object of the present invention is to provide a reliable starter for starting the peripheral equipment in synchronization with the ignition operation of the combustion equipment. It is an object of the present invention to provide a low-cost starter that can detect an ignition operation and that does not require wiring or piping to peripheral devices.

In order to achieve the above object, the present invention provides a starter for starting peripheral equipment which operates in conjunction with a combustion device, the starter detecting spark noise generated by an electric ignition device attached to the combustion device. A starting device comprising: a detecting device; and a judging device for judging the operation of the electric ignition device based on a detection signal of the detecting device, and for starting the peripheral device based on a judgment result of the judging device. . According to such a configuration, by incorporating the starter device that receives the spark noise and performs the start-up operation in the spark noise receivable region of the electric ignition device provided in the combustion device into the peripheral device or by disposing the starter device separately. Peripheral devices can be interlocked with the ignition operation. Therefore, no wiring is required and no transmitter is required, so that the cost is low and the existing combustion device can be easily deployed.

Further, the starting device of the present invention counts with the detecting means for receiving the spark noise of the electric ignition device, the waveform shaping means for shaping the waveform of the received spark noise, and the counter means for counting the shaped pulses. The counter means and the timer are characterized by comprising spark noise cycle determining means including timer means for measuring time, and output means for outputting a start signal to the peripheral device based on the result of the determining means. Since the operation of the electric ignition device is recognized by determining the period of the spark noise received using the period determining means including the means, it is possible to prevent malfunction due to other received signals.

Further, the starting device of the present invention comprises a time setting means having a timer means and a stop signal output means for stopping the operation of the peripheral equipment, the time setting means from the start signal output to the stop signal output. And the combustion device is provided with means for generating spark noise for a predetermined time during fire extinguishing operation, and the starting device is in operation when the spark noise during the fire extinguishing operation is detected. Since the peripheral device is stopped, the operation of the peripheral device started in conjunction with the operation of the electric ignition device can be stopped automatically or in conjunction with the fire extinguishing operation of the combustion device.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram for explaining the configuration and operation of an embodiment of a starting device according to the present invention. 2,
FIG. 3 is a circuit diagram showing a circuit of an electric ignition device which is usually used in a combustion device, for explaining spark noise.

In FIG. 1, A is a discharge electrode of an electric ignition device attached to the combustion apparatus and is installed so as to face a burner of the combustion apparatus (not shown). B is a block diagram showing a configuration of a starting device according to the present invention, and the starting device includes a spark noise detection unit, a waveform shaping unit, a counter, a timer, a determination unit, and a starting signal output unit. C is a peripheral device that is activated in association with the operation of the electric ignition device.

The high voltage generated in the secondary coil of the step-up transformer of the ignition circuit, which will be described later, is applied to the discharge electrode A to generate a spark, which ignites a burner (not shown).
The noise detection unit of the activation device B receives the spark noise D generated at that time. The spark noise D is a sawtooth pulse having the same period as the spark period of the discharge electrode A as shown in the figure, and the activating device B shapes the rectangular wave pulse shown by E in the waveform shaping section and then starts the timer. Then, the pulse within a predetermined time is counted.

The frequency of the pulse is calculated from the count value of the pulse within the predetermined time, and the judging unit judges that the frequency matches within the predetermined range of the discharge cycle by the ignition device of the combustion device, and the ignition device Recognize that it worked. Starting device B
Outputs a start signal from the start signal output unit to the peripheral device C when the determination unit recognizes that the ignition device has operated. In the case of a normal ignition device that uses a battery as a power source, the cycle of the discharge pulse is 3 to 10 cycles in the battery voltage range of 2.0 V to 3.0 V, and the frequency of the pulse noise received by the starter B is in this range. Recognizes that the ignition device has been activated.

FIG. 2 shows an example of a circuit of an ignition device using a battery as a power source. As shown in FIG. 2, the ignition circuit is SW
The ignition switch shown in (1), the battery (1), the blocking oscillation circuit (2), and the electrode driving circuit (3). The blocking oscillating circuit 2 includes an oscillating transformer 4, a transistor 7, and a resistor 6, and oscillates when the ignition switch SW is turned on and a constant voltage is supplied from the battery 1. The electrode drive circuit 3 includes a step-up transformer 5 and a resistor 1.
0, a capacitor 11, and a shockless diode 12 which is a trigger element, and is connected to one end of the output side coil 8 of the oscillation transformer 4 via a diode 9.

When the ignition switch SW is turned on, the blocking oscillation circuit 2 oscillates, and the electrode drive circuit 3 first outputs the output voltage of the output side coil 8 of the oscillation transformer 4 to the diode 9
Half-wave rectification is performed by and the capacitor 11 is charged. When the charging voltage of the capacitor 11 becomes the breakover voltage of the shockless diode 12 (for example, 150 V), the shockless diode 12 becomes conductive, the charging voltage of the capacitor 11 is applied to the primary coil 13 of the step-up transformer 5, and the step-up transformer 5 A high voltage is generated in the secondary coil 14 of. The discharge electrode A is connected to the secondary coil 14 of the step-up transformer 5, and at this time, the secondary coil 14 of the step-up transformer 5 is connected.
The high voltage generated at is applied to the discharge electrode A to generate a spark.

In the ignition circuit described above, the spark generation cycle of the discharge electrode A depends on the charging speed of the capacitor 11. When the voltage of the battery 1 drops, the capacitor 11
The charging speed becomes slower and the spark generation cycle becomes shorter.
For example, when the battery voltage drops below 2.0V, the spark generation cycle drops below 2 cycles. By determining that the frequency of the spark noise D is equal to or lower than a predetermined reference value, the starting device B recognizes that the voltage of the battery used for the power source of the ignition device has dropped below the reference, It is possible to activate a warning device such as an LED, a warning lamp, or a warning buzzer, which warns of a low voltage.

FIG. 3 is a circuit diagram of an ignition device powered by a household AC power source. In the figure, 1 is an AC power supply, and SW is an ignition switch. Reference numeral 15 is a step-up transformer, to the secondary coil 17 of which the discharge electrode A is connected. The operation of this ignition circuit will be described below. When the ignition switch SW is turned on and a positive voltage is applied to the terminal a, the terminal a and the resistor 3
0, diode 31, capacitor 32, diode 3
3, the capacitor 32 is charged by the loop of the terminal b. The resistor 34 is for discharging the capacitor 32 when the capacitor 32 is left in the middle of charging.

Then, when a positive voltage is applied to the terminal b,
The loop of the terminal b, the resistor 29, the capacitor 23, the resistor 26, the diode 27 and the terminal a charges the capacitor 23. When the charging voltage of the capacitor 23 becomes the breakover voltage (29 to 37 V) of the diac 22, the diac 22 becomes conductive, and the thyristor 18 passes through the resistor 21.
A voltage is applied to the gate of. Therefore, the thyristor 18
The anode and cathode of the capacitor are turned on, and the charge of the capacitor 32 is discharged to the primary coil 16 of the step-up transformer 15. At this time, a high voltage is generated in the secondary coil 17 of the step-up transformer 15, and a spark is generated in the discharge electrode A connected to this.

In such an ignition circuit, the spark generation period of the discharge electrode A is proportional to the charging speed of the capacitor 23, and the charging speed of the capacitor 23 is determined by the resistance value of the resistor 29. Therefore, the operation of the ignition device can be recognized by setting the determination reference of the pulse period in the determination unit of the starting device B to the region to which the spark generation period of the ignition device belongs. It is desirable that the determination unit of the activation device B be configured to be able to adjust the determination criterion of the pulse period.

Next, a method of stopping the operation of the peripheral device C activated by the activation device B will be described. The first method is to use the timer of the activation device B. The starting device B is provided with means for setting a time, and the starting device B outputs a starting signal and then outputs a stop signal after the time set by the time setting means has elapsed.

The second method is to provide the fire extinguishing means of the combustion device with means for generating spark noise for a predetermined time during the fire extinguishing operation. Usually, in a general combustion device, the extinguishing operation means is composed of an operation means common to the ignition operation means. In the case of a gas combustion device such as a gas stove, the ignition / fire extinguishing operation means is a turning knob, and when the turning knob is turned, the gas valve of the gas stove is opened and biased in the turning direction at the turning end portion. Causes the ignition switch to turn on and ignite. When the urging force of the rotary knob is released after the gas stove is ignited, the ignition switch is turned off and the gas valve is kept open. To extinguish the gas stove, turn the operating knob in the opposite direction and close the gas valve. In such an operation knob, if the ignition switch is turned on by urging the operation knob in the turning direction at the turning end portion of the fire extinguishing operation, spark noise may be generated during the fire extinguishing operation of the combustion device. it can. The activation device B detects this spark noise, and when it determines that the peripheral device C is operating by determining the operating state of the peripheral device C, outputs a stop signal to the peripheral device C from the activation signal output unit. The operation state of the peripheral device C may be determined by receiving a signal related to the operation of the peripheral device C and determining whether the determination unit is operating. Alternatively, a means for storing that the activation signal is output to the activation device is provided,
A method may be used in which the presence or absence of the output of the start signal is confirmed, the stop signal is output, and after the stop signal is output, the storage means is cleared.

Further, as a generally used ignition operation means of a combustion apparatus, there is a push button type. When the operation button of this type is pressed, the gas solenoid valve is opened and the ignition circuit is turned on to perform the ignition operation. The pressing button maintains the pressed state by the latch mechanism, but when the combustion device starts combustion by ignition, the ignition circuit is turned off by the signal of the combustion sensor such as the flame rod. When extinguishing the fire, when the push button is pressed to release the latch mechanism, it returns to the extinguishing position and the gas solenoid valve closes to extinguish the combustion device. In the case of this type of operation means, if the ignition circuit is turned on for a predetermined time when the latch mechanism is pressed to release it, spark noise can be generated during the fire extinguishing operation, and the starter B detects it. It is possible to output a stop signal.

When the starting device B having such a structure is used as a starting device for a ventilation fan for a range hood of a cooking appliance such as a gas range, the ventilation fan is started in conjunction with the operation of the ignition device of the gas range to interlock with the extinguishing of the gas range. Then, the operation of the ventilation fan can be stopped, but in the case of such cooking, the ventilation fan may be operated for about 5 minutes for purging odors and hot air even after extinguishing the gas range, so-called post-purging.
In order to deal with this post-purge, the starting device B outputs a stop signal to the peripheral device C after a lapse of a predetermined time after detecting spark noise for detecting the extinguishing operation of the combustion device after outputting the starting signal. You may do it.

The starting device according to the present invention is not limited to a gas stove, and can be applied to any combustion device equipped with an electric ignition device such as a water heater or a heating device that uses gas, kerosene, etc. to start peripheral devices in conjunction with each other. You can Further, peripheral equipment can start not only the ventilation device but also all the devices which are desired to be linked with the combustion device such as the cooking timer and the lighting device. Further, the start-up device may be incorporated in these peripheral devices, and it can be used as a start-up device for a plurality of devices by having a configuration independent of the peripheral devices and having a plurality of output channels.

As described above, the starting device according to the present invention detects the spark noise of the electric ignition device attached to the combustion device, recognizes the operation of the ignition device based on the cycle of the spark noise, and starts the peripheral equipment. Therefore, it is possible to provide a versatile low-cost starter that does not require wiring and can prevent malfunction.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing the configuration and operation of an embodiment of a starting device according to the present invention.

FIG. 2 is an ignition circuit diagram showing an example of an electric ignition device to which a starting device according to the present invention can be applied.

FIG. 3 is an ignition circuit diagram showing another example of the electric ignition device to which the starting device according to the present invention can be applied.

[Explanation of symbols] A discharge electrode, B starter C peripheral equipment D spark noise

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinji Yasue             2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya, Aichi Prefecture             Inside Nanai Co., Ltd. (72) Inventor Koichi Ito             2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya, Aichi Prefecture             Inside Nanai Co., Ltd. (72) Inventor Koji Asai             2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya, Aichi Prefecture             Inside Nanai Co., Ltd. (72) Inventor Hiroaki Takeshita             2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya, Aichi Prefecture             Inside Nanai Co., Ltd.

Claims (6)

[Claims] 1. A starting device for starting a peripheral device which operates in conjunction with a combustion device, said starting device comprising: a detection means for detecting spark noise generated by an electric ignition device attached to the combustion device; An activation device comprising: a determination unit that determines the operation of the electric ignition device based on a detection signal, and activates the peripheral device based on a determination result of the determination unit. 2. The starting device includes a detecting means for receiving spark noise of an electric ignition device, a waveform shaping means for shaping a waveform of the received spark noise, a counter means for counting the shaped pulse, and a counting time. 2. A spark noise cycle determining means comprising: a timer means for measuring the noise; and an output means outputting an activation signal to the peripheral device based on a result of the determining means.
The activation device described in. 3. The starting device includes a time setting means including a timer means and a stop signal output means for stopping the operation of the peripheral device, the time setting means from the start signal output to the stop signal output. The activation device according to claim 2, wherein the time is set. 4. The combustion device comprises means for generating spark noise during a fire extinguishing operation for a predetermined time, and the starting device stops the peripheral equipment in operation when detecting the spark noise during the fire extinguishing operation. Claim 1 characterized by
The activation device described in. 5. The starting device according to claim 4, wherein the starting device stops the peripheral device after a lapse of a predetermined time when a spark noise during the fire extinguishing operation is detected. 6. The activation device according to claim 1, wherein the peripheral device is a ventilation device.