JP4495719B2 - How to ignite gas flow and circuit layout - Google Patents

Description

  The present invention relates to a method for igniting a gas flow and a circuit arrangement for performing this method so that it can be used in a gas heating stove with a gas regulating component.

  Equipment such as for gas heating stoves can be realized in many design drawings.

  An ignition device for igniting gas is disclosed in US Pat. No. 5,722,823. The ignition device includes a magnet coil that operates a gas valve, an igniter that electrically ignites a gas flow, and a remote control unit that is connected to the magnet coil and the igniter via a low voltage line. The remote control unit includes an energization supply unit and a time switch for timing the low voltage setting.

  This design requires a large amount of current to ignite the gas flow. Therefore, three relay coils, which mean relatively high power input, are installed. The solenoid valve is constantly energized during the ignition process, resulting in high power consumption. Therefore, only the power supply option is circuit power supply. Another drawback is that errors occurring in the switch can be a safety-related problem.

  A valve device for controlling the ignition of a gas burner is known from GB 2351341. The operating spindle is moved by hand to an ignition position that opens the ignition lock valve. Since the operating spindle engages the microswitch when the spindle is moved, it needs to be held in this position for a short time. This produces a voltage that can be used to engage the magnet from the power supply. Ignition is performed by piezoelectric spark ignition. The power supply is switched off when the thermoelectric current provided by the thermocouple is sufficient to keep the ignition lock valve in its open position.

  This solution has the disadvantage of using a power supply. A further challenge is the need to perform a piezoelectric spark ignition. In particular, there is a fairly large conduction gap between the ignition lock valve and the burner hole, but the time between the ignition lock valve opening and ignition is relatively short, so that unless ignitable gas mixing occurs in the burner hole, There are more problems.

  Furthermore, German Utility Model No. 9307895 discloses a multi-function valve with thermoelectric locking for gas burners with regard to the heating circuit arrangement. This multifunctional valve uses a power supply that is present in the room to operate it. In order to ignite the gas flow, the solenoid valve is energized by a push button and opens an ignition lock valve. The gas flow is ignited simultaneously. The thermocouple in the region of the ignited gas flame is heated and the magnet is energized by the resulting thermoelectric current. Since this magnet holds the anchor firmly, the ignition lock valve connected to the anchor is kept in the open position. The push button can then be released, turning off the solenoid valve.

  The disadvantage here is that the pressure valve must be held for a long enough time until the thermoelectric current keeps the ignition lock valve in the open position. In addition, since circuit power supply is required, there is a disadvantage that power consumption is relatively high in view of the electromagnetic valve being energized for this time via the power supply device.

Both solutions disclosed in GB 2351341 and German utility model 9307895 have the disadvantage that the device cannot be operated fully automatically and manual operation is required. .
US Pat. No. 5,722,823 GB Patent Publication No. 2351341 German utility model No. 9307895 specification

  The present invention develops a method for fully auto-igniting a gas flow and a switch arrangement that implements this method, which is a low power consumption switch that can be used in an integrated power supply with sufficient lifetime. Based on the challenges to be. This structure should also be as simple and inexpensive as possible.

  In accordance with the present invention, the problem of the procedure is solved by operating a transverter that generates a higher voltage from the direct current applied at the power source, and the power source charges the storage capacitor and the ignition capacitor for applying the ignition voltage. . Intrinsically known ignition lock magnets are actuated by a holding current applied at the power source, while at the same time the electrical circuit that exists between the ignition lock magnet and the thermocouple that can be affected by the gas flame is a relay. Interrupted by. The storage capacitor is then unexpectedly discharged by the circuit element, creating a current surge and temporarily energizing the electromagnet to essentially open the known ignition lock valve and simultaneously apply it to the anchor of the ignition lock magnet. For an ignition lock magnet operated with holding current, the anchor is held in this position after application and the ignition spark is connected to the ignition capacitor via a transformer in a known manner to ignite the overflow gas. Generated via the ignition electrode. Subsequently, another ignition procedure is initiated, whereby the ignition capacitor is recharged and a new ignition spark is generated after charging is performed. End the ignition after a specified time. The holding current flowing from the power source to the ignition lock magnet is interrupted, and the circuit between the ignition lock magnet and the thermocouple is closed by a relay.

  This finds a solution that remedies the aforementioned drawbacks of the prior art. Easy operation of the electronic control unit facilitates ignition of the gas flow. In view of the mere pulse actuation of the electromagnet, regardless of the time for which the control unit is activated, the required power is very low. It is also possible to access the power supply to generate the ignition spark so that the additional cost of the piezoelectric ignition device is not necessary.

  Useful embodiments of the present invention can be derived from other claims.

  After the electronic control unit has been activated to ignite the gas stream, it proves to be beneficial if a check is made to determine whether the gas flame is on fire. If the information is positive, the ignition procedure is stopped, whereas if the information is negative, the above-described steps of the ignition procedure are performed.

  Also, if the presence of thermal electromagnetic force is measured, it is a useful embodiment of the method of the present invention, while if there is no thermal electromagnetic force, another ignition procedure is initiated. However, the ignition ends if there is evidence of thermal electromagnetic force. As soon as the measurement of the thermal electromagnetic force indicates that the electrically calculated thermoelectric current is sufficient to hold the anchor to the ignition lock magnet, the holding current flowing from the power source to the ignition lock magnet is blocked, The electrical circuit between the ignition lock magnet and the thermocouple is closed by a relay.

  It is also suitable for the storage capacitor and the ignition capacitor to be charged relatively easily via transverters assigned to them at different voltages.

  If a higher alternating current results from the direct current supplied by the power supply, it would be a convenient embodiment of the method of the invention whereby a power oscillator is used instead of a transverter and a storage capacitor initiates the ignition procedure As soon as it is switched to the first stage of the composite cascade, the storage capacitor and the ignition capacitor connected with the second stage of the composite cascade through the cascade circuit to the prescribed higher voltage by the higher alternating current. Charged. After reaching the specified higher DC voltage, the power oscillator is switched off and switched on again when another ignition procedure is started.

  To reduce further power requirements, which is particularly important when the power source is a battery and the size of the battery is reduced as it is installed with the electronic control unit in the receiver housing of the remote control, The holding current supplied by the power supply for holding can flow simultaneously through the ignition lock magnet and the relay while the electrical circuit between the ignition lock magnet and the thermocouple is closed. When the switching contact is inserted, due to the temporary interruption of the current, an additional current is temporarily generated to safely prevent the anchor from dropping off when the relay is relocated. On the other hand, it is suitable for the voltage of the holding current supplied from the power source to the ignition lock magnet to be transverted in the millivolt range by an additional transverter.

  It is also advantageous if the presence of thermal electromagnetic force is measured using an analog amplifier.

  The safety of the method of the present invention is increased by a procedural step, such as when breakdown occurs, in which one or more connected in a timed manner in series after a predetermined time has elapsed. By using an independent safety circuit breaker, power supply from the power source to the ignition lock magnet is interrupted.

  Saving energy by disconnecting the storage capacitor from the cascade before charging the ignition capacitor more periodically in order to keep the time between the first ignition procedure and the next ignition procedure as short as possible. Is desirable.

  As far as the circuit arrangement is concerned, the problem according to the invention is solved by the features of claim 12. Useful examples and developments are presented in the relevant dependent claims.

  The procedure which is the subject of the present invention for igniting a gas flow and the circuit arrangement according to the present invention are explained in more detail in the following specific examples. The individual drawings are shown in FIGS.

  In order to carry out the method of igniting the gas flow, the circuit arrangement according to the invention illustrated in FIG. 1 is used in a gas regulating valve. The gas regulating valve is a switching and regulating device that is preferably attached to a gas heated chimney stove or the like. This facilitates operation and monitoring of the burner that controls the volume of gas flowing to the burner. Similar to the assembly which is not important to the invention and which is not shown in this embodiment, the gas regulating valve has an ignition burner 1 and an ignition lock valve 2. The design and function of the ignition burner 1 and the ignition lock valve 2 are known in the art and will not be described in detail.

  This is triggered by a microcomputer module (not shown) serving as an electronic control unit, which in this embodiment is installed in a separate housing (also not shown) in the receiving section of the remote control with the power supply 10. Has been. As shown in the drawing, the power source 10 is composed of a commercially available battery, and in this case, is a size R6.

  A power oscillator 11 (described in more detail below) triggered from the microcomputer module via port J is connected to the power supply 10. In series there are cascade circuits 12, 13 that serve to trigger and power the downstream storage capacitor C1 and to trigger and power the downstream storage capacitor C2. Since the voltage required to charge the storage capacitor C1 is much smaller than the voltage required to charge the ignition capacitor C2, the cascade circuits 12, 13 are designed as a composite cascade circuit.

  Here, the first stage 12 of the cascade serves to trigger and power the downstream storage capacitor C1. Downstream of this, in turn, there is an electromagnet 5 which serves to actuate an essentially known ignition lock valve 2, as schematically illustrated in the drawing. In view of the short charging time, a so-called pulse magnet 5 having a low heat capacity is sufficient.

  The second stage 13 of the cascade serves to trigger and power the downstream ignition capacitor C2, which is part of an igniter that is known per se and therefore will not be described in further detail. The ignition capacitor C2 is triggered for ignition by the microcomputer module via port C. The second stage 13 of the cascade is connected to the element 14 for monitoring the voltage. At the same time, element 14 helps to limit the highest voltage that can occur to prevent component destruction. The additional voltage monitor for storage capacitor C1 can be omitted since it is likely that storage capacitor C1 will also be charged after charging ignition capacitor C2. Port D serves to send a checkback signal to the microcomputer module.

FIG. 2 shows in detail the circuit for the power oscillator 11 used. The power oscillator 11 consists of a CMOS electronic circuit 15 having at least four gates that are known per se to the expert. These gates, NOR gates, NAND gates, it is sufficient such simple negator (simple negators). Downstream from these, there is a complementary electric field effect power stage 16 to which an LC series oscillation circuit comprising a coil L1 and an HF capacitor C3 is connected. The RC link serves as a so-called phase shifter 19 for feedback and phase adjustment.

  Further, as shown in FIG. 1, the ignition lock magnet 6 that forms a part of the ignition lock valve 2 is connected to the thermocouple 4. Also, the normally closed contact of the monostable relay 17 is installed in this circuit, but this circuit opens in an energized state, and the ignition lock magnet 6 receives current from the power source 10 fed by the battery. In addition to this, the circuit element triggered in the microcomputer module via the port G (in this case the transistor T1) is connected on the one hand to the power supply 10 and on the other hand to the relay 17. Also, the resistor R1 is installed in parallel with the relay 17 so that the holding current required for the ignition lock magnet 6 is higher than the current flowing through the relay 17. The circuit also has two safety circuit breakers 18 connected in series and timed, which are connected to the microcomputer module via ports H and M for control.

  Two other circuit elements, transistor T2 and transistor T3, connect to the circuit between relay 17 and safety breaker 18. Transistor T2 with resistor R3 upstream is connected to the negative terminal of power supply 10 and is triggered by the microcomputer module via port F, whereas transistor T3 is connected to the positive terminal of power supply 10 and port Triggered by the microcomputer module via E.

  In addition, an analog amplifier 20 is connected in parallel with the thermocouple 4. This analog amplifier 20 has the task of measuring the direct current that occurs in the millivolt range with the thermocouple 4, amplifies it and converts it into a region that can be processed by the microcomputer module. In addition to this, as a customary case in this case, the DC amplifier requires on the one hand an auxiliary power supply that is higher than the operating voltage, and on the other hand is subject to drift deviations, for example due to temperature effects, so that the analog amplifier 20 is an AC amplifier Designed.

  An analog amplifier as shown in FIG. 3 will be described below.

  The field effect transistor T4 and resistor R2 triggered by the microcomputer module via port L form a controllable voltage divider. The preamplifier and booster amplifier are downstream from this voltage divider, with blocking capacitors C4 and C5 assigned to each other.

  By means of the preamplifier V1, a reference potential is formed by a positive voltage in order to eliminate fluctuations in the on-board voltage. On the other hand, in the case of the booster amplifier V2, the reference potential is formed by the mass. Both amplifiers V1, V2 and trigger TR are activated by the microcomputer module through port K, although they are disabled when they do not need to drain power. A part of the trigger TR after the booster amplifier V2 is connected to the microcomputer module via the port I for a part thereof.

  In order to carry out the method according to the invention, an ignition command is sent to the microcomputer module via the remote control. The analog amplifier 20 activated via port K checks whether a thermal electromagnetic force is applied to the thermocouple 4 and its associated information is sent via port I to the microcomputer module. If there is an existing thermal electromagnetic force equal to the burning flame, the ignition procedure is aborted, but if there is no thermal electromagnetic force, the analog amplifier 20 voltage divider is triggered by the microcomputer module via port L. Is done. In the single switching of the voltage divider, the direct current is converted into alternating current pulses by the thermocouple 4 at this time. This pulse reaches the preamplifier V1 via the blocking capacitor C4. The signal from preamplifier V1 is sent to booster amplifier V2 via blocking capacitor C5 and further amplified. The analog signal coming from booster amplifier V2 is digitized at a fixed trigger point by trigger TR, as shown in the chart associated with FIG.

  In this chart, the course of the voltage U at time t is plotted. At the specified voltage level SE, the pulse signal IS is introduced, and at time TL, the trigger TR sets the start trigger point TR1, and when the voltage of the pulse signal IS is released, the second trigger point TR2 to which the time TE is allocated is set. Set. The elapsed time between the two points at times TL and TE is the measurement signal MS.

  The specific signal MS obtained from the existing thermal electromagnetic force reaches the microcomputer module via port I. The length of the measurement signal MS is directly proportional to the thermal electromagnetic force in the thermocouple 4.

  If there is any thermal electromagnetic force, i.e. the ignition is already on, the ignition procedure is stopped, but if there is no thermal electromagnetic force on the other hand, the power oscillator 11 is activated by the microcomputer module via port J. And storage capacitor C1 is switched via port A to the first stage 12 of the composite cascade.

  When the power oscillator 11 is operated, the resonance circuit starts to oscillate through the feedback element, that is, the resonance circuit becomes the self-oscillation type and frequency measurement power oscillator 11. This means that at the output from the power oscillator 11, a higher alternating current occurs over and over again with the low direct current fed by the battery on the input side. This alternating current is stored with the help of the two cascade stages 12, 13 until the device 14 responds and signals the microcomputer module via port D, which serves to monitor the voltage and limit the maximum voltage generated. Capacitor C1 and ignition capacitor C2 are charged and then power oscillator 11 is switched off via port J.

The timed safety circuit breaker 18 is then actuated via port M, and the ignition lock magnet 6 is supplied with holding current from the power supply 10 via the transistor T1 triggered via port G and energizes the relay 17. Then, the circuit between the ignition lock magnet 6 and the thermocouple 4 is opened. The storage capacitor C1 is unexpectedly discharged by subsequent triggering of port B. Thereupon, the storage capacitor C1 is separated from the cascade stage 12 via port A. The pulse magnet 5 is temporarily energized by this power surge, and the tappet 7 moves sufficiently against the elasticity of the rebound spring 8 to attach the anchor 3 to the ignition lock magnet 6. Since the holding current flows, the anchor 3 is held in this position, and the ignition lock valve 2 is kept in this open position. Gas can flow to the ignition burner 1 through a gas regulating valve.

  If breakdown occurs as a result of a component failure or the like, after a predetermined time has elapsed, the energization of the ignition lock magnet 6 by the power supply 10 is one or more connected in series in a timed manner. Blocked by an independent safety circuit breaker 18 and the ignition lock valve remains in the open position, but is closed again by the rebound spring 8.

  The microcomputer module activates the ignition device via port C, the ignition capacitor C2 is discharged, and an ignition spark flashes at the ignition electrode 9 to ignite the overflowing gas. After a predetermined time has elapsed, in this embodiment, approximately one second later, the analog amplifier 20 is activated via ports K and L and heating begins as a result of the burning of the flame so that a detectable voltage is already present. A check is performed to determine whether it has been applied to the thermocouple 4, i.e. at least approximately 1 mV.

  If this is not the case, another ignition procedure is introduced and, as already explained in detail above, the power oscillator 11 is then activated, the ignition capacitor C2 is charged, and then a new ignition spark is generated. It is discharged again. Since the next ignition procedure no longer requires further charging of storage capacitor C1, storage capacitor C1 is separated from cascade stage 12 to save power. If gas ignition does not occur within a certain period, the microcomputer module stops the ignition procedure.

  If there is a minimum voltage, of course, no further ignition procedure is started, but the effective open circuit voltage of the thermocouple 4 is sufficient as the holding current for the ignition lock magnet 6 from the amount of current calculated electrically. It will be checked again until. At this point, the analog amplifier 20 is deactivated via port K and the current flowing from the power supply 10 to the ignition lock magnet 6 is blocked by the port G. The relay 17 is no longer energized, and the open / close contact of the relay 17 closes the circuit between the thermocouple 4 and the ignition lock magnet 6. The anchor 3 is then held by a thermoelectric current.

  In order to prevent the anchor 3 from dropping off due to an essentially temporary interruption of the holding current when switching the switching contact of the relay 17, the transistor T2 is temporarily activated via the port F during the switching time and the additional current Is generated for a short time similarly through the resistor R3, and as described above, the anchor is prevented from coming off safely.

  If the gas regulating valve is switched off, a switch-off command is passed to the microcomputer module via the remote control. While bypassing the safety circuit breaker 18 and the ignition lock magnet 6, temporarily activated ports G and E cause a power surge to be routed through the relay 17, resulting in a temporary lift-off of the switching contacts. . This prevents a holding current flowing between the thermocouple 4 and the ignition lock magnet 6. The anchor is no longer held by the ignition lock magnet 6 and the ignition lock valve 2 closes under the influence of the rebound spring 8. Gas flowing to the ignition burner 1 and of course the main burner (not shown) is blocked and the gas flame is extinguished.

  The method which is the subject of the present invention and the circuit arrangement for carrying out the method are naturally not limited to the specific examples described. Modifications, adaptations, and combinations are possible without departing from the scope of the invention.

  It is clear that the transmission of the control signal can be performed by a cable, infrared rays, radio waves, ultrasonic waves, etc., as is generally known. It is also possible not to use a remote control and to place all necessary components on or in the gas regulating valve. It is also possible to have only a main burner that is directly ignited. Furthermore, the small plug-in type power supply device can be used as the power source 10 that can be easily plugged in instead of the battery.

It is a schematic drawing showing circuit arrangement. It is detailed drawing which shows a power oscillator. It is a detailed drawing which shows an analog amplifier.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ignition burner 2 Ignition lock valve 3 Anchor 4 Thermocouple 5 Pulse magnet 6 Ignition lock magnet 7 Tappet 8 Rebound spring 9 Ignition electrode 10 Power supply 11 Power oscillator 12 First cascade stage 13 Second cascade stage 14 Voltage monitoring / limiting element 15 CMOS circuit 16 Complementary field effect power stage 17 Relay 18 Safety circuit breaker 19 Phase shifter 20 Analog amplifier AM port C1 Storage capacitor C2 Ignition capacitor C3 HF capacitor C4 Blocking capacitor C5 Blocking capacitor IS pulse signal L1 coil LS pulse signal MS measurement signal R1 resistance R2 resistance R3 resistance SE voltage level time at TE TR2 time at TL TR1 TR trigger TR1 trigger point TR2 trigger point T1 transistor T2 transistor T3 transistor T4 field effect transistor V1 booster amplifier V2 preamplifier

Claims (18)

Means of an electronic control unit, after operating the unit to ignite the gas stream,
a. A transverter that generates a higher voltage from the direct current supplied from the power supply (10) is activated,
b. The storage capacitor (C1) and ignition capacitor (C2), which help set the ignition voltage with a higher voltage, are charged,
c. The ignition lock magnet (6) is actuated by the holding current applied by the power source (10), while at the same time an electrical circuit existing between the ignition lock magnet (6) and the thermocouple (4) is connected to the relay (17). Blocked by
d. The storage capacitor (C1) is unexpectedly discharged through the circuit elements, generates a current surge, opens the ignition lock valve (2) and simultaneously attaches the anchor (3) of the ignition lock magnet (6) to the electromagnet (5 ) Temporarily, while the anchor (3) is held in this position after attachment due to the ignition lock magnet (6) operated with holding current,
e. In order to ignite the overflow gas via the ignition electrode (9) connected to the ignition capacitor (C2) via the ignition transformer, an ignition spark is generated by known means,
f. When the predetermined ignition procedure is resumed, the ignition capacitor (C2) is recharged,
A new ignition spark occurs after charging,
g. After a specified time, the ignition ends,
h. The gas flow is characterized in that the holding current flowing from the power supply (10) to the ignition lock magnet (6) is interrupted and the circuit between the ignition lock magnet (6) and the thermocouple is closed by a relay (17). How to ignite.   After being activated to ignite the gas flow, the electronic control unit checks the effective open circuit voltage of the thermocouple (4) and the amount of current electrically calculated from the voltage is the ignition lock magnet (6). 2. The method of igniting a gas flow according to claim 1, wherein the ignition procedure is stopped if the holding current is sufficient. a. The thermal electromagnetic force at the thermocouple (4) is measured and the ignition capacitor (C2) is recharged,
As long as a new ignition spark occurs after charging, the ignition procedure is resumed if the thermal electromagnetic force is lacking, but if there is a thermal electromagnetic force, the ignition is terminated,
b. Retention that flows from the power supply (10) to the ignition lock magnet (6) as soon as the thermoelectric current calculated from the existing thermal electromagnetic force is sufficient to hold the anchor (3) by the ignition lock magnet (6) 3. Method for igniting a gas flow according to claim 1 or 2, characterized in that the current is interrupted and the circuit between the ignition lock magnet (6) and the thermocouple is closed by a relay (17).   4. A method for igniting a gas stream according to any one of claims 1 to 3, characterized in that the storage capacitor (C1) and the ignition capacitor (C2) are charged by respective transverters assigned thereto. From the direct current supplied from the power source (10), a higher voltage is generated using the power oscillator (11) instead of the transverter,
The storage capacitor (C1) is switched to the first stage (12) of the composite cascade downstream of the power oscillator (11) and is charged to a defined higher DC voltage,
Gas flow according to any one of claims 1 to 3, characterized in that the ignition capacitor (C2) connected by a conducting wire with the second stage (13) of the composite cascade is charged to a higher specified DC voltage. How to ignite.   6. Gas flow according to claim 5, characterized in that after reaching a prescribed higher DC voltage, the power oscillator (11) is switched off and then switched on again when another ignition procedure is started. How to ignite.   The holding current supplied from the power source (10) for holding the anchor (3) flows simultaneously through the ignition lock magnet (6) and the relay (17), and the ignition lock magnet (6) and the thermocouple (4). The gas flow according to any one of claims 1 to 6, characterized in that an additional current is temporarily generated when the electrical circuit between the two is closed by closing the relay (17). Method.   The method for igniting a gas flow according to any one of claims 1 to 6, characterized in that the voltage of the holding current supplied from the power supply (10) to the ignition lock magnet (6) is transformed in the millivolt range. .   9. A method for igniting a gas stream according to any one of the preceding claims, characterized in that the presence of a thermal electromagnetic force is measured by an analog amplifier (20).   After a predetermined time has elapsed for safety, energization of the ignition lock magnet (6) by the power source (10) is inevitably caused by one or more safety circuit breakers (18) connected in series in a timed manner. 10. A method for igniting a gas stream according to any one of claims 1 to 9, characterized in that it is interrupted.   7. Gas flow according to claim 5 or 6, characterized in that the storage capacitor (C1) is disconnected from the cascade (12) in an ignition procedure following the first ignition procedure before charging the ignition capacitor (C2). How to ignite. A circuit arrangement for performing a procedure for igniting a gas flow,
A transverter connected to a power source (10);
An ignition capacitor connected to the ignition electrode (9) in a known manner via a storage capacitor (C1) downstream of the transverter connected to the electromagnet (5) and the ignition transformer to operate the ignition lock valve (2). C2)
An ignition lock magnet (6) connected via a relay (17) to a power source (10) or a thermocouple (4);
At least one timed safety circuit breaker (18) mounted between the power source (10) and the ignition lock magnet (6);
By having an element for measuring the voltage of the thermocouple (4),
A circuit arrangement for igniting the overflowing gas when the electronic control unit activates the ignition device to discharge the ignition capacitor (C2) and the ignition spark is flashed by the ignition electrode (9) .   13. A circuit for igniting a gas flow according to claim 12, characterized in that the storage capacitor (C1) has an element (14) assigned to monitor and limit the voltage and a transverter assigned to it. Placement.   13. A circuit for igniting a gas flow according to claim 12, characterized in that the ignition capacitor (C2) has an element (14) assigned to monitor and limit the voltage and a transverter assigned to it. Placement. Instead of a transverter, a power oscillator (11) is connected to the power supply (10),
The cascade (12, 13) is downstream from the power oscillator (11);
15. A circuit arrangement for igniting a gas flow according to claim 13 or 14, characterized in that the element (14) is placed behind the cascade (12, 13) for monitoring and limiting the voltage.   The power oscillator (11) evolves from a CMOS circuit (15) having at least four gates, which are either NOR gates, NAND gates or those developed as simple negators, and at least 1 The gates are upstream of other parallel-connected gates or downstream of the complementary field effect power stage (16), further downstream of these LC resonant circuits (L1, C3), and phase shifter (19 14. The circuit arrangement for igniting a gas flow according to claim 13, characterized in that it is a number of CMOS circuits (15) that serve as links.   17. The circuit arrangement for igniting a gas flow according to claim 12, wherein the element for measuring the voltage of the thermocouple (4) is an analog amplifier (20).   The circuit arrangement for igniting a gas flow according to claim 17, characterized in that the analog amplifier (20) is an AC amplifier downstream from the clocked voltage divider.

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