CN105465827A - Ignition control device for gas appliance - Google Patents
Ignition control device for gas appliance Download PDFInfo
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- CN105465827A CN105465827A CN201410450077.9A CN201410450077A CN105465827A CN 105465827 A CN105465827 A CN 105465827A CN 201410450077 A CN201410450077 A CN 201410450077A CN 105465827 A CN105465827 A CN 105465827A
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- high voltage
- gas
- control device
- ignition control
- flame
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Abstract
Disclosed is an ignition control device for a gas appliance. The ignition control device comprises a high-voltage starting unit, a controller and a flame detection unit. The output end of the high-voltage starting unit is electrically connected with an ignition electrode of the gas appliance and the flame detection unit. The controller controls the high-voltage starting unit to output a high voltage pulse at intervals to generate sparks opposite to a burner of the gas appliance and ignite gas. After the flame detection unit detects that flame is generated between the ignition electrode and the burner, the controller controls the high-voltage starting unit to stop outputting the high voltage pulse. In this way, ignition and flame induction can be conducted by using only one electrode.
Description
Technical field
The present invention is relevant with gas; Refer to a kind of ignition control device of gas especially.
Background technology
Figure 1 shows that known gas 1, include burner 10, ignitor 12, induction electrode 14 and an ignition control device 16.This burner 10 produces flame for burning gas.This ignition control device 16 is electrically connected this ignitor 12 and this induction electrode 14.In time lighting a fire, this ignitor 12 is given in this ignition control device 16 output HIGH voltage pulse, relative this burner 10 electric discharge of this ignitor 12 is made to produce spark with the gas that ignites, this induction electrode 14 of flame contact after gas combustion, returns flame signal by this induction electrode and gives this ignition control device 16.After this ignition control device 16 receives this flame signal, confirm that gas is ignited, now, this ignition control device 16 stops output HIGH voltage pulse to give this ignitor 12.
Because known gas 1 adopts ignitor 12 and induction electrode 14 two electrodes to carry out lighting a fire and flame respond to, will the cost of increase electrode on manufacturing.In addition, this induction electrode 14 is normally arranged near this ignitor 12, if Rig up error, make ignitor 12 excessively close to induction electrode 14, by causing the high voltage pulse exporting this ignitor 12 to, this induction electrode 14 is discharged, make this ignition control device 16 receive this high voltage pulse, and cause the electronic building brick in ignition control device 16 to damage.
Summary of the invention
The object of this invention is to provide a kind of ignition control device of gas, same electrode can be utilized to carry out lighting a fire and responding to flame, effectively reduce the cost that electrode is set, and high voltage pulse can be avoided to damage the electronic building brick of ignition control device.
For achieving the above object, the ignition control device of gas provided by the invention, wherein this gas comprises an ignitor and a burner, and this ignitor this burner contiguous, this ignition control device comprises a high voltage startup unit, a controller and a flame detecting unit.Wherein, this high voltage startup unit has an output, and this output is electrically connected this ignitor, and this high voltage startup unit makes this output export a high voltage pulse at set intervals controllably, produces spark to make this ignitor; This output that this controller controls this high voltage startup unit produces this high voltage pulse; This flame detecting unit is electrically connected this output and this controller of this high voltage startup unit, and this flame detecting unit detects the flame between this ignitor and this burner; Wherein, after this flame detecting unit detects and produces flame between this ignitor and this burner, this controller controls this high voltage startup unit to be stopped exporting this high voltage pulse.
Effect of the present invention is, utilizes same electrode to light a fire and responds to the cost of manufacture that flame can reduce gas, and does not have the doubt that high voltage pulse causes electronic building brick to damage.
Accompanying drawing explanation
Fig. 1 is the Organization Chart of known gas.
Fig. 2 is the gas Organization Chart of the ignition control device with a preferred embodiment of the present invention.
Fig. 3 is the ignition control device circuit diagram of a preferred embodiment of the present invention.
Primary clustering symbol description in accompanying drawing:
Known technology part
1 gas, 10 burners, 12 ignitors, 14 induction electrodes, 16 ignition control devices.
Part of the present invention
2 gas, 20 burners, 202 gas pipelines, 22 gas valves, 222 control ends, 24 ignitors, 26 ignition control devices, 28 high voltage startup unit, 30 oscillating circuits, 32 circuit for producing high voltage, 34 flame detecting unit, 36 buffer circuits, 38 high pressure detecting units, 40 gas valve driver elements, 42 microprocessors, C1 electric capacity, C2 storage capacitor, D bidirectional trigger diode, G earth point, S starts signal, T1 step-up transformer, and T2 discharges transformer.
Detailed description of the invention
For can the present invention be illustrated more clearly in, lifts preferred embodiment and coordinate accompanying drawing to be described in detail as follows.
Referring to shown in Fig. 2, is the gas 2 of a preferred embodiment of the present invention, includes burner 20, gas valve 22, ignitor 24 and an ignition control device 26.This burner 20 produces flame for burning gas, and this burner 20 is made by metal material, and this burner 20 is electrically connected an earth point G of this ignition control device 26; This gas valve 22 is arranged at and is communicated on a gas pipeline 202 of this burner 20, the gas that the controlled unlatching of this gas valve 22 or blocking-up are passed through; This ignitor 24 is arranged at the position of this burner 20 contiguous, a gap and this ignitor 24 and this burner 20 are separated by.
Please coordinate shown in Fig. 2 and Fig. 3, in the present embodiment, this ignition control device 26 includes high voltage startup unit 28, flame detecting unit 34, high pressure detecting unit 38, gas valve driver element 40 and for the controller of microprocessor 42.
This high voltage startup unit 28 includes oscillating circuit 30, circuit for producing high voltage 32 and for the trigger elements of bidirectional trigger diode (DIAC) D.This oscillating circuit 30 is electrically connected this microprocessor 42, this oscillating circuit 30 includes a step-up transformer T1, this step-up transformer T1 has a secondary side (Secondaryside), this oscillating circuit 30 controls by this microprocessor 42 and produces the vibration of signal, and exports an alternating voltage by the secondary side of this step-up transformer T1.This circuit for producing high voltage 32 is electrically connected one end of the secondary side of this step-up transformer T1, this circuit for producing high voltage 32 includes an electric discharge transformer T2, this electric discharge transformer has a secondary side, this secondary side forms an output of this high voltage startup unit 28, and wherein one end of the secondary side of this electric discharge transformer T2 is electrically connected this ignitor 24.After this circuit for producing high voltage 32 receives this alternating voltage, by the discharge and recharge effect of electric capacity C1 of primary side being connected to this electric discharge transformer T2, export a high voltage pulse by the secondary side of this electric discharge transformer T2 at interval of a period of time.This bidirectional trigger diode D has a first end and one second end, this first end is electrically connected the other end of the secondary side of this electric discharge transformer T2, this second end is electrically connected the earth point G of this ignition control device 26, after voltage difference between first end and the second end is greater than the trigger voltage of this bidirectional trigger diode D, this bidirectional trigger diode D is the state of conducting, therefore, when this electric discharge transformer T2 exports this high voltage pulse, the voltage of this high voltage pulse is greater than the trigger voltage of this bidirectional trigger diode D, makes this bidirectional trigger diode D conducting.When the D conducting of this bidirectional trigger diode, this ignitor 24 this burner 20 relative discharges and produces spark.
This flame detecting unit 34 is electrically connected the other end and this microprocessor 42 of the secondary side of this electric discharge transformer T2.In the present embodiment, this flame detecting unit 34 includes a storage capacitor C2 and a buffer (buffer) circuit 36, this storage capacitor C2 is electrically connected the other end of the secondary side of this electric discharge transformer T2, and this storage capacitor C2 is electrically connected this microprocessor 42 by this buffer circuits 36.When this burner 20 produces flame, after flame contact to this ignitor 24, because the plasma effect of flame itself is by formation one guiding path, the electric energy of the flame signal that flame is formed charges to this storage capacitor C2.After the voltage of this storage capacitor C2 arrives a predetermined voltage, this buffer circuits 36 exports this predetermined voltage and gives this microprocessor 42, to detect the judgment standard of flame as this flame detecting unit 34.This buffer circuits 36 has operational amplifier, by the effect of operational amplifier low output impedance, the voltage of storage capacitor C2 is allowed not affect by the input impedance of this microprocessor 42, the voltage of storage capacitor C2 correctly can be reacted on this microprocessor 42, avoid the load effect of the input impedance of this microprocessor 42 to cause storage capacitor C2 be reacted to the voltage drop of this microprocessor 42 and cause erroneous judgement.
Whether strictly according to the facts this high pressure detecting unit 38 for detecting this high voltage startup unit 28 start, and in the present embodiment, this high pressure detecting unit 38 is electrically connected the other end and this microprocessor 42 of the secondary side of this step-up transformer T1 respectively.When the secondary side of this step-up transformer T1 exports this alternating voltage, this high pressure detecting unit 38 receives this alternating voltage export the voltage signal of a high levle according to this to this microprocessor 42, using as the foundation judging the start strictly according to the facts of this high voltage startup unit 28.
This gas valve driver element 40 is electrically connected a control end 222 of this microprocessor 42 and this gas valve 22 respectively, and this microprocessor 42 controls this gas valve 22 by this gas valve driver element 40 and opens or block the gas supplying to transport to this burner 20.
After this microprocessor 42 receives a startup signal S, carry out gas 2 and to light a fire the control of flow process.In reality, when gas 2 is water heater, this startup signal S can be the signal of current, tap open after the current detector water detectd in water pipe start flowing, and export this startup signal S and give this microprocessor 42 and carry out the control of flow process of lighting a fire.When gas 2 is gas oven, this startup signal S can be produced by a switch, by the open circuit of switch, off state as startup signal S to light a fire.The flow process of igniting is below described:
After this microprocessor 42 receives this startup signal S, this microprocessor 42 exports an Ignition signal and gives this oscillating circuit 30, this oscillating circuit 30 exports this alternating voltage and gives this circuit for producing high voltage 32, the secondary side of the electric discharge transformer T2 of this circuit for producing high voltage 32 is made to export this high voltage pulse constantly, to make this bidirectional trigger diode D conducting, this ignitor 24 this burner 20 relative is allowed to produce spark.Meanwhile, this high pressure detecting unit 38 detects this oscillating circuit 30 when exporting this alternating voltage, exports the voltage signal of this high levle to this microprocessor 42.After this microprocessor 42 receives the voltage signal of this high levle, judge that high voltage startup unit 28 is as normal start, this microprocessor 42 controls this gas valve 22 and opens, and makes Gas-Flow pass to this burner 20.
If this microprocessor 42 exports this Ignition signal, after one first scheduled time, do not receiving the high levle voltage signal of this high pressure detecting unit 38 output yet, then this microprocessor 42 judges loss of ignition, now, then still maintain this gas valve 22 to close, to avoid gas leakage.
Before Gas-Flow passes to this burner 20, this ignitor 24 produces spark constantly, ignites after Gas-Flow passes to this burner 20 by the spark of this ignitor 24 generation.Now, the flame signal that flame is formed charges to this predetermined voltage to this storage capacitor C2, and exports this microprocessor 42 to by this buffer circuits 36.After this microprocessor 42 receives this predetermined voltage, stop exporting this Ignition signal to this oscillating circuit 30, to stop exporting this high voltage pulse, so, namely complete the flow process of igniting.
If to open and after one second scheduled time at gas valve 22, this microprocessor 42 does not receive this predetermined voltage that this flame detecting unit 34 exports yet, then this microprocessor 42 controls this gas valve and blocks gas, to avoid gas leakage.
In sum, ignition control device 26 of the present invention only uses an ignitor 24 as igniting and the use responding to flame, effectively reduces the cost arranging induction electrode.Ignitor 24 pairs of induction electrode electric discharges more can not be had to cause the doubt of electronic building brick damage in ignition control device 26.It will be further appreciated that, utilize trigger elements can conducting while output HIGH voltage pulse, avoid the voltage of high voltage pulse be back to this microprocessor 42 via flame detecting unit 34 and cause microprocessor 42 fault.In reality, the equivalent circuit that trigger elements also can adopt unidirectional diac or be made up of plurality of transistors, as long as its trigger voltage is less than the voltage of this high voltage pulse and higher than this predetermined voltage of storage capacitor C2, all can be used as trigger elements.
The foregoing is only the better possible embodiments of the present invention, the equivalent structure that application description of the present invention and claim are done such as changes, and ought to be included in the scope of the claims of the present invention.
Claims (9)
1. an ignition control device for gas, this gas comprises an ignitor and a burner, this ignitor this burner contiguous, and this ignition control device comprises:
One high voltage startup unit, has an output, and this output is electrically connected this ignitor, and this high voltage startup unit makes this output export a high voltage pulse at set intervals controllably, produces spark to make this ignitor;
One controller, this output controlling this high voltage startup unit produces this high voltage pulse; And
One flame detecting unit, be electrically connected this output and this controller of this high voltage startup unit, this flame detecting unit detects the flame between this ignitor and this burner;
Wherein, after this flame detecting unit detects and produces flame between this ignitor and this burner, this controller controls this high voltage startup unit to be stopped exporting this high voltage pulse.
2. the ignition control device of gas according to claim 1, wherein, this high voltage startup unit includes an electric discharge transformer, and this electric discharge transformer has a secondary side, this secondary side forms this output, and this secondary side is electrically connected this ignitor and this flame detecting unit.
3. the ignition control device of gas according to claim 2, wherein, wherein one end of the secondary side of this electric discharge transformer is electrically connected this ignitor; This high voltage startup unit includes a trigger elements, and this trigger elements has a first end and one second end, and this first end is electrically connected the other end of the secondary side of this electric discharge transformer, and this second end is electrically connected an earth point of this ignition control device; When the secondary side of this electric discharge transformer exports this high voltage pulse, this trigger elements conducting.
4. the ignition control device of gas according to claim 3, wherein, this trigger elements is a bidirectional trigger diode.
5. the ignition control device of gas according to claim 3, wherein, this flame detecting unit includes a storage capacitor, after this ignitor of the flame contact that this burner produces, the electric energy of the flame signal that flame is formed charges to this storage capacitor, after the voltage of this storage capacitor arrives a predetermined voltage, this controller controls this high voltage startup unit to be stopped exporting this high voltage pulse.
6. the ignition control device of gas according to claim 5, wherein, this flame detecting unit includes a buffer circuits, and this storage capacitor is electrically connected this controller by this buffer circuits.
7. the ignition control device of gas according to claim 3, wherein, this controller is a microprocessor.
8. the ignition control device of gas according to claim 1, wherein, this gas comprises a gas valve and is arranged at and is communicated on a gas pipeline of this burner, the controlled unlatching of this gas valve or block the gas passed through; One high pressure detecting unit, is electrically connected this controller, and after this high pressure detecting unit detects this high voltage startup unit start, this controller controls this gas valve and opens gas.
9. the ignition control device of gas according to claim 8, wherein, this high voltage startup unit comprises an oscillating circuit and a circuit for producing high voltage, this oscillating circuit is electrically connected this controller, this oscillating circuit includes a step-up transformer, this step-up transformer has a secondary side and is electrically connected this circuit for producing high voltage and this high pressure detecting unit, this circuit for producing high voltage has this output, this controller controls this oscillating circuit, make the secondary side of this step-up transformer export an alternating voltage and give this circuit for producing high voltage, this high voltage pulse is exported to make this circuit for producing high voltage, after the secondary side that this high pressure detecting unit detects this step-up transformer exports this alternating voltage, this controller controls this gas valve and opens gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450077.9A CN105465827B (en) | 2014-09-05 | 2014-09-05 | The ignition control device of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450077.9A CN105465827B (en) | 2014-09-05 | 2014-09-05 | The ignition control device of gas |
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| Publication Number | Publication Date |
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| CN105465827A true CN105465827A (en) | 2016-04-06 |
| CN105465827B CN105465827B (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410450077.9A Active CN105465827B (en) | 2014-09-05 | 2014-09-05 | The ignition control device of gas |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404616A (en) * | 1980-04-16 | 1983-09-13 | Hitachi, Ltd. | Igniting and flame detecting device |
| CN2211015Y (en) * | 1994-12-28 | 1995-10-25 | 何建平 | Intelligent ignition-controlling device |
| CN101311631A (en) * | 2007-05-25 | 2008-11-26 | 佛山市华联兴电子有限公司 | Double needle united electronic impulse ignition apparatus flame checking scheme |
| CN201281361Y (en) * | 2008-10-06 | 2009-07-29 | 陈文周 | Ignition electrode induction type automatic lighter |
| CN101545635A (en) * | 2009-03-04 | 2009-09-30 | 北京润瓯科技有限公司 | Flame detection isolator |
| CN101916967A (en) * | 2010-07-17 | 2010-12-15 | 中山市华美骏达电器有限公司 | Single-needle electronic pulse ignition induction circuit |
-
2014
- 2014-09-05 CN CN201410450077.9A patent/CN105465827B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404616A (en) * | 1980-04-16 | 1983-09-13 | Hitachi, Ltd. | Igniting and flame detecting device |
| CN2211015Y (en) * | 1994-12-28 | 1995-10-25 | 何建平 | Intelligent ignition-controlling device |
| CN101311631A (en) * | 2007-05-25 | 2008-11-26 | 佛山市华联兴电子有限公司 | Double needle united electronic impulse ignition apparatus flame checking scheme |
| CN201281361Y (en) * | 2008-10-06 | 2009-07-29 | 陈文周 | Ignition electrode induction type automatic lighter |
| CN101545635A (en) * | 2009-03-04 | 2009-09-30 | 北京润瓯科技有限公司 | Flame detection isolator |
| CN101916967A (en) * | 2010-07-17 | 2010-12-15 | 中山市华美骏达电器有限公司 | Single-needle electronic pulse ignition induction circuit |
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| Publication number | Publication date |
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| CN105465827B (en) | 2018-07-13 |
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