CN207051236U - Gas heater flame control circuit - Google Patents
Gas heater flame control circuit Download PDFInfo
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- CN207051236U CN207051236U CN201721031346.3U CN201721031346U CN207051236U CN 207051236 U CN207051236 U CN 207051236U CN 201721031346 U CN201721031346 U CN 201721031346U CN 207051236 U CN207051236 U CN 207051236U
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- gas heater
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Abstract
In the utility model gas heater flame control circuit, low voltage and direct current produces AC signal by triode, transformer, electric capacity, self-oscillation；Flame inductive needle is as metal electrode device at flame combustion, ion is produced when flame combustion, the rectified action of diode is played after flame inductive needle, by AC signal rectification caused by system self-oscillation, negative voltage signal is formed in the normal phase input end of operational amplifier, passes through transmittal circuit outputs lower electrical level；The low level that system detectio exports to discharge circuit, that is, it is judged as current flame combustion, so as to perform corresponding follow-up function.The utility model carries out fire defector using ion characteristic caused by flame combustion, and reaction more rapidly, accurately, stably, improves the reliability of fire defector, prevents malfunction, is advantageous to be lifted the constant temperature speed of gas heater.
Description
Technical field
A kind of gas heater control unit is the utility model is related to, especially a kind of gas heater flame control electricity
Road.
Background technology
The misfire detection probe of gas heater is mainly by possessed by gas flame：Ionization property detects combustion gas
Whether extinguish, misfire detection probe at work due to the burning (should have a less flare between two probes) of combustion gas,
At this moment flare makes the air generation ionization phenomena between probe supply misfire detection probe in detecting.Misfire detection probe ionization signal is sent
To relevant integrated circuit, it is judged as misfire detection probe circuit working properly.But when because of certain reason, (for example wind gives combustion gas fire
Seedling is blown out) when making water heater extinguishing, now ionization signal will disappear, and water heater integrated circuit will export an abnormal letter
Number, this signal just promotes protection circuit to work, and closes Water heater gas valve.If manual-lock water heater, then circuit
It is stopped, equally closes gas gate.Ion induction type principle is the electro optic properties for applying flame, it is necessary to electronic circuit branch
Running is held, no electricity is then invalid, and existing design of electronic circuits is complicated.
Utility model content
In order to overcome drawbacks described above, the utility model provides a kind of gas heater flame control circuit, and it reacts faster
It is speed, accurate, stably, the reliability of fire defector is improved, prevents malfunction, is advantageous to the constant temperature of lifting gas heater
Speed.
The utility model in order to solve its technical problem used by technical scheme be：A kind of gas heater flame control
Circuit, including the first power supply, ground connection, triode, transformer, first resistor, second resistance, 3rd resistor, the first electric capacity, second
Electric capacity and the 3rd electric capacity, the transformer include being wrapped in primary concussion coil, self-excitation coil and secondary liter on iron core
Line ball circle, the triode are provided with base stage, emitter stage and colelctor electrode, it is characterized in that：The both ends of first electric capacity respectively with
First power supply and grounding connection, the both ends of first resistor are connected with the first power supply and emitter stage respectively, the both ends point of the second electric capacity
Be not connected in parallel with colelctor electrode and grounding connection, the primary concussion coil with the second electric capacity, the both ends of second resistance respectively with
First power supply connects with base stage, the 3rd electric capacity it is in parallel with 3rd resistor again with after self-excitation coil tandem and positioned at base stage and ground connection
Between.
As further improvement of the utility model, in addition to second source, flame inductive needle, diode, operation amplifier
Device, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 4th resistance, the 5th resistance, the 6th resistance and the 7th resistance, the secondary
Normal phase input end of the step-up coil successively with the 4th electric capacity, the 5th resistance, the 7th resistance and operational amplifier concatenates, the 4th electricity
One end of resistance snaps between the 4th electric capacity and the 5th resistance and the other end is connected with flame inductive needle, and one end of the 6th resistance is taken
It is connected between the 5th resistance and the 7th resistance and the other end is connected with second source, one end of the 5th electric capacity snaps into the 5th resistance
And the 7th between resistance and the other end and grounding connection, one end of the diode are equally overlapped in the 5th resistance and the 7th resistance
Between and the other end and grounding connection, the 6th electric capacity are overlapped between the 7th resistance and the normal phase input end of operational amplifier
And the other end and grounding connection.
As further improvement of the utility model, the second source is lower than the voltage of the first power supply.
The beneficial effects of the utility model are：The utility model carries out flame using ion characteristic caused by flame combustion
Detection, reaction more rapidly, accurately, stably, improve the reliability of fire defector, prevent malfunction, are advantageous to lifting combustion
The constant temperature speed of gas water heater.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model gas heater flame control circuit.
Fig. 2 is the circuit diagram of the utility model gas heater flame control circuit.
The figures above is compareed, is supplemented as follows explanation：
The first power supplys of 12V--- GND--- is grounded
Q1--- triode T1--- transformers
R1--- first resistor R2--- second resistances
R3--- 3rd resistors the first electric capacity of C1---
The electric capacity of the second electric capacity of C2--- C3--- the 3rd
The primary concussion coil 3-4--- self-excitation coils of 1-3---
5-8--- level step-up coil B--- base stage
E--- emitter stage C--- colelctor electrodes
5V--- second source Flame-- flame inductive needles
The electric capacity of DS1--- diodes C4--- the 4th
The electric capacity of the 5th electric capacity C6--- of C5--- the 6th
The resistance of the 4th resistance R5--- of R4--- the 5th
The resistance of the 6th resistance R7--- of R6--- the 7th
Embodiment
A kind of gas heater flame control circuit, including the first power supply 12V, ground connection GND, triode Q1, transformer T1,
First resistor R1, second resistance R2,3rd resistor R3, the first electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3.The transformation
Device T1 includes being wrapped in primary concussion coil 1-3, self-excitation coil 3-4 and secondary step-up coil 5-8 on iron core.Three pole
Pipe Q1 is provided with base stage B, emitter E and colelctor electrode C.The both ends of the first electric capacity C1 respectively with the first power supply 12V and ground connection
GND connections, first resistor R1 both ends are connected with the first power supply 12V and emitter E respectively, the second electric capacity C2 both ends respectively with
Colelctor electrode C is connected with ground connection GND, and the primary concussion coil 1-3 and second electric capacity C2 is connected in parallel, second resistance R2 both ends
It is connected respectively with the first power supply 12V and base stage B, the 3rd electric capacity C3 is in parallel with 3rd resistor R3 again after being concatenated with self-excitation coil 3-4
And between base stage B and ground connection GND.
During energization, the first power supply 12V is charged by second resistance R2 to the 3rd electric capacity C3, when the 3rd electric capacity C3 charges three
Pole pipe Q1 base stage B low levels, triode Q1 conductings, the first power supply 12V are charged by first resistor R1 to the second electric capacity C2.The
After three electric capacity C3 chargings terminate, triode Q1 base stage B high level, triode Q1 ends, and the second electric capacity C2 passes through primary and shaken
Coil 1-3 is discharged over the ground, and the 3rd electric capacity C3 is discharged over the ground by self-excitation coil 3-4, completes a charge and discharge process, secondary boosting
Coil 5-8 completes a boost process by primary concussion coil 1-3.It is primary by the continuous charge and discharge process of self-excited circuit
Concussion coil 1-3 drives secondary step-up coil 5-8 continuously to shake, and is produced so as to complete the AC wave shape of boosting.First electric capacity C1
Effect be that the first power supply 12V is filtered.3rd resistor R3 effect is to be partial pressure, adjustment triode Q1 with second resistance R2
Base stage B voltage.
The utility model also includes second source 5V, flame inductive needle Flame, diode DS1, operational amplifier, the 4th
Electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7.
Secondary step-up coil 5-8 positives with the 4th electric capacity C4, the 5th resistance R5, the 7th resistance R7 and operational amplifier successively
Input concatenates.4th resistance R4 one end is snapped between the 4th electric capacity C4 and the 5th resistance R5 and the other end and flame sensing
Pin Flame connections, the 6th resistance R6 one end are snapped between the 5th resistance R5 and the 7th resistance R7 and the other end and the second electricity
Source 5V connections, the 5th electric capacity C5 one end are snapped between the 5th resistance R5 and the 7th resistance R7 and the other end and ground connection GND companies
Connect, one end of the diode DS1 is equally overlapped between the 5th resistance R5 and the 7th resistance R7 and the other end connects with ground connection GND
Connect, the 6th electric capacity C6 is overlapped between the 7th resistance R7 and the normal phase input end of operational amplifier and the other end and ground connection
GND connections.
Flame inductive needle Flame is arranged at flame combustion.When there is no flame, flame inductive needle Flame into open-circuit condition,
The normal phase input end of operational amplifier is high level+5V；When flame combustion, due to ion characteristic caused by flame, flame sense
Answer and the effect of diode DS1 one-way commutations is produced between pin Flame and the earth GND, alternating voltage is through the 4th caused by transformer T1
After electric capacity C4, the 4th resistance R4, it is low-voltage to be rectified limit value, therefore the normal phase input end of operational amplifier forms negative voltage letter
Number, circuit output low level is followed by operational amplifier, by system detectio.
In embodiment, the second source 5V is lower than the first power supply 12V voltage.
Operation principle of the present utility model is：Low voltage and direct current by triode Q1, transformer T1, electric capacity R1, R2,
R3, self-oscillation produce AC signal；Flame inductive needle Flame as metal electrode device at flame combustion, when flame fire
Ion is produced during burning, diode DS1 rectified action is played after flame inductive needle Flame, by caused by system self-oscillation
AC signal rectification, negative voltage signal is formed in the normal phase input end of operational amplifier, passes through transmittal circuit outputs lower electrical level；System
System detects the low level of discharge circuit output, that is, is judged as current flame combustion, so as to perform corresponding follow-up function.
The utility model carries out fire defector using ion characteristic caused by flame combustion, and reaction is more rapidly, accurately, surely
It is fixed, the reliability of fire defector is improved, prevents malfunction, is advantageous to be lifted the constant temperature speed of gas heater.
Claims (3)
1. a kind of gas heater flame control circuit, including the first power supply, ground connection, triode, transformer, first resistor,
Two resistance, 3rd resistor, the first electric capacity, the second electric capacity and the 3rd electric capacity, the transformer include being wrapped in first on iron core
Level concussion coil, self-excitation coil and secondary step-up coil, the triode are provided with base stage, emitter stage and colelctor electrode, and it is special
Sign is：The both ends of first electric capacity respectively with the first power supply and grounding connection, the both ends of first resistor respectively with the first power supply
Connected with emitter stage, coil and the second electric capacity are shaken in the both ends of the second electric capacity with colelctor electrode and grounding connection, the primary respectively
Be connected in parallel, the both ends of second resistance are connected with the first power supply and base stage respectively, after the 3rd electric capacity and self-excitation coil tandem again with
3rd resistor is in parallel and is located between base stage and ground connection.
2. gas heater flame control circuit according to claim 1, it is characterized in that：Also include second source, flame
Inductive needle, diode, operational amplifier, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 4th resistance, the 5th resistance, the 6th electricity
Resistance and the 7th resistance, the secondary step-up coil successively with the 4th electric capacity, the 5th resistance, the 7th resistance and operational amplifier
Normal phase input end concatenation, one end of the 4th resistance snaps between the 4th electric capacity and the 5th resistance and the other end senses with flame
Pin is connected, and one end of the 6th resistance is snapped between the 5th resistance and the 7th resistance and the other end is connected with second source, and the 5th
One end of electric capacity snaps between the 5th resistance and the 7th resistance and the other end and grounding connection, one end of the diode are same
It is overlapped between the 5th resistance and the 7th resistance and the other end and grounding connection, the 6th electric capacity are overlapped in the 7th resistance and fortune
The other end and grounding connection between the normal phase input end of calculation amplifier.
3. gas heater flame control circuit according to claim 2, it is characterized in that：The second source is than the first electricity
The voltage in source is low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031346.3U CN207051236U (en) | 2017-08-17 | 2017-08-17 | Gas heater flame control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031346.3U CN207051236U (en) | 2017-08-17 | 2017-08-17 | Gas heater flame control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207051236U true CN207051236U (en) | 2018-02-27 |
Family
ID=61502405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721031346.3U Active CN207051236U (en) | 2017-08-17 | 2017-08-17 | Gas heater flame control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207051236U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386007A (en) * | 2019-07-23 | 2019-10-29 | 南京信息工程大学 | A kind of method of electric car and electric bicycle charge and discharge spontaneous combustion protective device and spontaneous combustion protective device processing digital signal |
| CN112305055A (en) * | 2020-09-29 | 2021-02-02 | 华帝股份有限公司 | Combustion working condition control device and control method of gas appliance |
| CN112648646A (en) * | 2020-12-10 | 2021-04-13 | 广州市红日燃具有限公司 | Early warning device and early warning method for ion-sensitive firewall of integrated cooker |
| CN117748936A (en) * | 2024-02-19 | 2024-03-22 | 成都麦特斯科技有限公司 | Low-power consumption boost system |
-
2017
- 2017-08-17 CN CN201721031346.3U patent/CN207051236U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386007A (en) * | 2019-07-23 | 2019-10-29 | 南京信息工程大学 | A kind of method of electric car and electric bicycle charge and discharge spontaneous combustion protective device and spontaneous combustion protective device processing digital signal |
| CN110386007B (en) * | 2019-07-23 | 2023-10-13 | 南京信息工程大学 | Electric automobile and electric bicycle charge-discharge spontaneous combustion protection device and method for processing digital signals by spontaneous combustion protection device |
| CN112305055A (en) * | 2020-09-29 | 2021-02-02 | 华帝股份有限公司 | Combustion working condition control device and control method of gas appliance |
| CN112648646A (en) * | 2020-12-10 | 2021-04-13 | 广州市红日燃具有限公司 | Early warning device and early warning method for ion-sensitive firewall of integrated cooker |
| CN117748936A (en) * | 2024-02-19 | 2024-03-22 | 成都麦特斯科技有限公司 | Low-power consumption boost system |
| CN117748936B (en) * | 2024-02-19 | 2024-04-26 | 成都麦特斯科技有限公司 | Low-power consumption boost system |
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