KR200154970Y1 - High-frequency electro type igniter - Google Patents

Abstract

The present invention relates to a high frequency electronic ignition device that provides an ignition discharge of a continuous rating by boosting an AC voltage input from an electronic combustion device that obtains energy by burning fuel such as petroleum, diesel, and gas, to a predetermined state. A diode connected in series to be connected to the AC source in the forward direction, the first rectifying unit half-wave rectifying the voltage of the AC source, an overcurrent prevention unit for connecting the resistors in parallel to adjust the strength of the voltage applied by half-wave rectification, and a predetermined voltage; A number of diodes are connected in series and connected to the other end of the alternating current source, and charge and discharge the second rectifying unit for rectifying the negative half-wave voltage and supplying one end of the primary coil of the transformer and the voltage applied through the first rectifying unit. The capacitor that executes the operation and the capacitor are switched on and off at the same time as the charge / discharge operation of the capacitor to interrupt the primary coil current of the transformer. It consists of a transistor that performs high voltage induction to the secondary coil, a capacitor that sets the on / off cycle of the transistor through charging and discharging operation, and a diode connected in parallel with the resistor, and finely adjusts the amount of current applied to the capacitor. A current rectifying unit, a silicon rectifier which is switched to a voltage applied to the gate terminal through the bypass resistor in the switching-off state of the transistor, and discharges the remaining voltage of the capacitor; and is connected in a forward direction to the current adjusting unit; It is characterized by consisting of a diode to maintain the supply.

Description

High frequency electronic igniter

The present invention relates to an electronic ignition device, and in more detail, the AC voltage input from a combustion device that obtains energy by burning fuel such as petroleum, diesel, and gas is converted into high voltage through negative half wave. The present invention relates to a high frequency electronic ignition device that provides an ignition discharge above a continuous rating at elevated pressure.

In general, in a combustion device using a fuel such as petroleum, diesel, and gas, for example, a boiler boosts the AC current of the commercial power (110V to 220V) input for the combustion of the fuel to a high voltage, and then ignition provided in the combustion chamber Instantaneous discharge to the means induces combustion of the supplied fuel.

As a means for boosting the AC current inputted above, a booster transformer is used. The primary coil and the secondary coil are wound around the ferrite core having a predetermined shape at a predetermined ratio. do.

In the transformer, when the current of the supply source flowing in the primary coil is momentarily interrupted, the current flowing in the primary coil is induced into the secondary coil, and the induced current is dependent on the winding ratio between the primary coil and the secondary coil. The voltage is boosted to high voltage and then a momentary discharge is performed through the ignition means.

In the case of a transformer used to generate a spark voltage in a conventional combustion device, that is, a boiler, the primary coil and the secondary coil are wound around the core of the core at a predetermined ratio to leak the voltage unilaterally according to the set winding ratio. The pulse type which added the electronic control means to the type | mold or leakage type transformer is widely used.

It is used to be limited to the short time rating of 6 minutes and 20% because the function of discharge to maintain the operating state of 1 minute 12 seconds and the operation of 4 minutes 48 seconds rest is executed according to the set time constant.

The conventional ignition device has a very weak structure for continuous rated output with high input current and continuous discharge for more than 60 minutes, and also has a problem of not obtaining normal combustion efficiency during continuous operation.

The present invention has been made in view of the above-mentioned general problems, and its object is to provide a high frequency electronic ignition apparatus capable of performing discharge above a continuous rating through oscillation of negative half-wave frequency, thereby improving combustion efficiency. In order to reduce the input current, the power saving function is improved, and discharge over continuous rating is performed to provide efficiency in the use of the combustion device.

The present invention for achieving the above object is an electronic ignition device having a transformer in which the primary side coil and the secondary side coil is wound at a predetermined turns ratio, and a predetermined number of diodes are connected in series and forwardly connected to an AC source. A first rectifier for half-wave rectifying the voltage applied from the alternating current source, an overcurrent prevention part for adjusting the strength of the voltage applied to the half-wave rectified by connecting a resistor having a predetermined value in parallel, and a predetermined number of diodes A second rectifying part connected in series and connected to the other end of the AC source, the second rectifying part supplying the voltage applied from the AC source to one end of the primary coil of the transformer by a negative half-wave rectification, and the voltage applied through the first rectifying part; Capacitors that perform charging and discharging operations at the same time, and are switched on and off at the same time as charging and discharging operations of the And a capacitor configured to conduct high-voltage induction to the secondary coil in the intermittent direction, a capacitor for setting the on-off period of the transistor through charging and discharging operation, and a resistor and a diode connected in parallel with the capacitor. A current adjuster which finely adjusts the amount of applied current to maintain stability in charging operation, and silicon control which is switched to a voltage applied to the gate terminal through a bypass resistor in the switching off state of the transistor to discharge the remaining voltage of the capacitor A rectifier is connected to the current adjuster in a forward direction, and includes a diode that maintains a positive current supply to the transistor side, and outputs a negative half-wave rectified high voltage and maintains an output above a continuous rating. .

1 is a circuit diagram showing a configuration of a high frequency electronic ignition device according to an embodiment of the present invention,

2 is a graph showing a negative half-wave waveform in the present invention of FIG.

3 is an enlarged graph of a negative half-wave waveform for an arbitrary portion of FIG. 2.

* Explanation of symbols for main parts of the drawings

10: AC source 20: First rectifier

30: overcurrent protection unit 40: second rectifying unit

50: transformer 60: current regulator

R1-R7: Resistor D1-D16: Diode

C1-C3: Condenser VR: Varistor

SCR: Silicon Controlled Rectifier

Hereinafter, the most preferred embodiment of the present invention with reference to the accompanying drawings in detail as follows.

As can be seen in Figure 1 is a high frequency electronic ignition device according to the present invention, the AC source 10 for supplying a predetermined voltage and current, and a predetermined number (preferably in the forward direction to one end of the AC source 10) (6) diodes (D1-D6) are connected in series, half-wave rectified supply voltage applied from the AC source 10 to extract a positive DC component, the first primary coil (L1) of the transformer 50 The first rectifier 20 protects the device in the reverse direction of the voltage and lightning induced from the transformer 50 to the alternating current source 10 during interruption of the current applied to the current, and a resistor R1 having a predetermined value. R2) is connected in parallel to the over-current prevention section 30 to adjust the flow of the current applied by half-wave rectified in the first rectifying section 10 to prevent the inflow of over-current to each device connected to the rear end, and A predetermined number (in the reverse direction, in parallel to the other end of the AC source 10) Preferably, six diodes (D7-D12) are connected in series to rectify the current of the alternating current source (10) half-wave rectified and output a negative half-wave as shown in FIG. 2 and FIG. ) And the first and second secondary side coils L3 and L4 when the current is interrupted by the time constant set between the overcurrent protection unit 30 and the second rectifier 40 in the forward direction. 2 and 3, the first and second primary coils L1 and L2 of the transformer 50 for inducing a negative half-wave high current, an output terminal of the overcurrent protection unit 30, and A capacitor C1 connected in parallel with the other end of the alternating current source 10 to adjust the strength of the current through the operation of charging and discharging, and charged by a current applied from the alternating current source 10 and then set by a time constant. The discharge operation is performed, and the first secondary coil L1 current of the transformer 50 is interrupted in accordance with the charge / discharge operation. A capacitor C2 for inducing a negative half-wave high voltage with the coil L3, a diode D13 connected to one end of the capacitor C2 to perform reverse current prevention and boosting, and the diode D13. The collector stage is connected to the cathode stage of the transmitter, the emitter stage is connected to the second primary coil (L2), and the base stage is provided for the positive waveform and the resistor R3 connected to the output terminal of the overcurrent protection unit 30. The switching transistor Q1 connected between the output terminals of the diodes D15 and D16 and the base terminal of the transistor Q1 are connected in parallel to set an on / off time of the transistor Q1 according to the operation of charging and discharging. The main capacitor C3 and the diode D14 connected in parallel to the output terminal of the second primary coil L2 of the transformer 50 and the resistor R6 connected in series with the resistor R7 and the resistor R7. ), Which is charged in the capacitor C3 by circulating the second primary coil L2 The current adjusting unit 60 for adjusting the intensity of the transistor, the emitter terminal of the transistor Q1, and the resistor R5 are connected to the gate terminal of the silicon controlled rectifier SCR, and the anode terminal is connected to the current adjusting unit 60. A silicon controlled rectifier (SCR) connected to an output terminal of the transistor, and a cathode terminal connected to the alternating current source in a forward direction to induce discharge of residual current in a switching-off state of the transistor Q1; A resistor R4 connected to the resistor R5 connected to the gate terminal of the rectifier SCR to maintain the bypass voltage of the transistor Q1 constant to maintain a stable switching operation of the silicon controlled rectifier SCR. ) And the first and second secondary coils L3 and L4 of the transformer 50 which boost the current induced by the interruption of the current applied to the first and second primary coils L1 and L2 at a set winding ratio. Is done.

Referring to the operation of the negative half-wave output in the high frequency electronic ignition device according to the present invention made of a structure as described above are as follows.

When the driving operation is started by the switching of the driving switch (not shown), the AC source 10 power is supplied to each load side of the ignition device according to the present invention.

At this time, the voltage output from the AC source 10 is half-wave rectified by a positive DC component by the first rectifying unit 20 in which a predetermined number of diodes D1-D6 are connected in the forward direction, and then resistors R1 and R2. When the current level is adjusted to a predetermined state and output through the overcurrent protection unit 20 connected in parallel, the capacitors C1 and C2 connected between the both ends on the basis of the AC source 10 are applied. After charging the constant current by the set capacity, the discharge operation is performed to compensate and output the current intensity.

In addition, the second rectifying unit 40, in which a predetermined number of diodes D7-D12 are connected in series with the other end of the alternating current source 10, is applied to an alternating current source as shown in FIGS. The voltage of (10) is rectified by a negative half wave and then applied to the first and second primary coils L1 and L2 of the transformer 50.

When the capacitor C2 performs the charging of the set capacity in the operating state as described above and then performs the discharge operation, the first and second primary coils L1 and L2 of the transformer 50 are excited, and the capacitor ( When the discharge operation of C2) is completed and the switch operation is performed, the high voltage is applied to the first and second secondary coils L3 and L4 due to the interruption of the current supplied to the first primary coil L1 of the transformer 50. As described above, oscillation of the high voltage is performed by repeating the charging and discharging operations of the capacitor C2 as described above.

At the same time, the voltage of the alternating current source 10 through the resistor R3 is applied to the capacitor C3 to repeatedly perform the charging and discharging operations. The repetitive operation of the charging and discharging causes the transistor Q1 to operate. On-off switching to switch the oscillating voltage at a constant cycle.

When the transistor Q1 performs the switching-on operation, the discharge voltage of the capacitor C2 connected to the collector terminal is induced to the emitter terminal side after the withstand voltage is boosted by the diode D13. When the primary coils L1 and L2 are formed in an excited state, and the transistor Q1 is turned off, the supply of current applied to the first and second primary coils L1 and L2 is interrupted and the transformer 50 is interrupted. A high voltage is induced to the first and second secondary coils L3 and L4 on the side.

In the state where the high frequency oscillation is induced as shown in FIGS. 2 and 3 attached to the charging and discharging operation and the transistor Q1 is operated by the switching operation and the negative half-wave rectification operation of the second rectifier 40, the resistance ( The current adjusting unit 60 including R6 and R7 and the diode D14 applies the second primary coil L2 of the transformer 50 to maintain stable operation of the transistor Q1 on / off setting capacitor C3. By fine-adjusting the current applied through the oscillation of the high frequency to maintain a stable, the diodes (D15, D16) connected to the output side of the current adjusting unit 60 supplies a positive waveform to the base terminal of the transistor (Q1) give.

In addition, the residual voltage remaining in the capacitor C3 when the transistor Q1 is turned off and the residual electromotive force of the second primary coil L2 of the transformer 50 have a bypass voltage through the resistor R4. Since the silicon-controlled rectifier SCR is turned on to remove the residual discharge voltage of the capacitor C3 and the residual electromotive force of the second primary coil L2, the silicon terminal is supplied to the gate terminal of the SCR. Keep it.

In addition, the varistor VR absorbs the reverse surge voltage generated during the repeated on / off operation of the transistor Q1 to prevent the transistor Q1 from being damaged.

As described above, the present invention rectifies and supplies the high voltage supplied for the spark of the high voltage to the ignition means in the combustion device in a negative half wave so that continuous discharge operation above the rating is maintained, thereby providing efficiency in the operation of continuous combustion. In addition, the reduction of the input current is maintained and power is efficiently used.

Claims (3)

In an electronic ignition apparatus having a transformer in which a primary coil and a secondary coil are wound at a predetermined turns ratio, a predetermined number of diodes D1-D6 are connected in series to be connected to the AC source 10 in a forward direction. A first rectifier 20 for half-wave rectifying the voltage applied from the AC source 10; An overcurrent prevention unit 30 for connecting the resistors R1 and R2 having a predetermined value in parallel to adjust the strength of the half-wave rectified voltage; A predetermined number of diodes D7-D12 are connected in series and connected to the other end of the alternating current source 10, and negative half-wave rectified voltage applied from the alternating current source 10 to one end of the primary coil of the transformer. A second rectifier 40 for supplying; Capacitors (C1, C2) for performing a charge / discharge operation on the voltage applied through the first rectifier (20); A transistor (Q1) which is switched on and off at the same time as the charge / discharge operation of the capacitor (C2) and performs high voltage induction to the secondary side coil in the interruption of the current applied to the primary coil of the transformer; A capacitor C3 for setting an on-off period of the transistor Q1 through an operation of charging and discharging; A current adjuster 60 formed of resistors R6 and R7 and a diode D14 connected in parallel thereto to finely adjust the amount of current applied to the capacitor C3 to maintain stability in a charging operation; A silicon controlled rectifier (SCR) for switching the voltage applied to the gate terminal through the bypass resistor (R4) in the switching off state of the transistor (Q1) to discharge the residual voltage of the capacitor (C3); A diode D15 and D16 connected in a forward direction with the current adjusting unit 60 to maintain a positive current supply to the transistor Q1, and boosting the supply voltage of the AC source through negative half-wave rectification. High frequency electronic ignition device characterized in that to enable continuous discharge above the rated. The high frequency electronic ignition device as set forth in claim 1, wherein the capacitor (C2) is set with a time constant for oscillating a high frequency through the interruption of a current applied to the transformer primary coil. The high frequency circuit according to claim 1, further comprising a varistor connected in parallel to the output terminal of the overcurrent protection unit 30 and the emitter terminal of the transistor Q1 to absorb the reverse surge voltage generated in the transformer. Electronic ignition.