CN201522010U - Protective circuit for gas stove ignition failure - Google Patents
Protective circuit for gas stove ignition failure Download PDFInfo
- Publication number
- CN201522010U CN201522010U CN200920267768XU CN200920267768U CN201522010U CN 201522010 U CN201522010 U CN 201522010U CN 200920267768X U CN200920267768X U CN 200920267768XU CN 200920267768 U CN200920267768 U CN 200920267768U CN 201522010 U CN201522010 U CN 201522010U
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- circuit
- igniter
- driving circuit
- power supply
- electromagnetic valve
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Abstract
The utility model provides a protective circuit for gas stove ignition failure, which comprises a power supply, an igniter and a solenoid valve which are connected with the power supply, and an ignition button, a delay circuit and a solenoid valve driving circuit which are connected in series sequentially between the power supply and the solenoid valve; the protective circuit is characterized by also comprising an igniter driving circuit connected with the solenoid valve driving circuit in series. The protective circuit not only can solve the problem of hard ignition of a gas stove with the function of thermocouple flameout protection, but also solves the potential safety hazard of gas leakage caused by failure of components.
Description
Technical field
The utility model relates to the gas-cooker field, particularly a kind of gas combustion range ignition circuit with blowout protection.
Background technology
Fig. 1 is the fast ignitor of gas-cooker on the existing market, comprises igniter, thermocouple, button ignition switch, delay circuit, magnetic valve, driving circuit for electromagnetic valve.When user's button ignition switch of pressing and outward winding, by the igniter igniting, delay circuit can keep magnetic valve to open about 10 seconds, guarantee that thermocouple obtains good flame induction, subsequently, driving circuit for electromagnetic valve is stopped power supply, thermocouple produces the unlatching that electric current is kept magnetic valve, and burning is continued.This design makes and need not to pin for a long time button ignition switch when the user lights a fire.
Capacitor discharge finishes in delay circuit, and driving circuit for electromagnetic valve will quit work, and this moment, gas-cooker was kept the unlatching of magnetic valve by the flame heat thermocouple, had still satisfied the requirement of blowout protection in theory.But; because any components and parts all have the possibility of inefficacy; electronic switch in above-mentioned driving circuit for electromagnetic valve is short-circuited; (battery electric quantity exhaust before) then within a certain period of time; the coil of blowout protection valve can be in "on" position all the time; the extinguish protection function of gas-cooker will lose efficacy, and the major safety risks of gas leakage and blast are arranged.
Therefore, how when realizing quick ignition function, to guarantee that unaffected those skilled in the art of being of extinguish protection function of magnetic valve need the technical problem of solution badly.
The utility model content
The technical problems to be solved in the utility model provides a kind of gas combustion range ignition fail-safe circuit, not only can realize quick igniting, and can solve above-mentioned safety problem.
The utility model proposes a kind of gas combustion range ignition fail-safe circuit; comprise power supply, the igniter that links to each other with power supply and magnetic valve, the button ignition switch that between power supply and magnetic valve, is connected in series successively, delay circuit, driving circuit for electromagnetic valve; it is characterized in that, also comprise the igniter drive circuit that is connected in series with driving circuit for electromagnetic valve.
Further, the igniter drive circuit is arranged between driving circuit for electromagnetic valve and the igniter.
Further, the igniter drive circuit comprises resistance R 13, triode TS8, resistance R 12 and the triode TS9 that is connected in series successively.
Further, triode TS8 can use metal-oxide-semiconductor, relay to substitute in the igniter drive circuit.
Further, also comprise being connected in series of a plurality of driving circuit for electromagnetic valve and igniter drive circuit.
The utility model not only can solve the problem of band thermocouple extinguish protection function gas combustion range ignition difficulty, has also solved the potential safety hazard of the gas leakage that produces owing to the components and parts inefficacy.Entire circuit is simple in structure, and is with low cost, applicable to any electric power system more than the 1.2V.
Description of drawings
Below be that the utility model is described in further detail in conjunction with the accompanying drawings:
Fig. 1 is the fast ignitor of gas-cooker on the existing market.
Fig. 2 is a kind of cold run holding circuit schematic diagram that the utility model provides.
Fig. 3 is the utility model cold run holding circuit physical circuit figure.
The specific embodiment
Specifically; Fig. 2 is the schematic diagram of a kind of cold run holding circuit of providing of the utility model; igniter (3) that comprise power supply (1), links to each other and magnetic valve (8), the button ignition switch (2) that between power supply and magnetic valve, is connected in series successively, delay circuit (4), driving circuit for electromagnetic valve (6) with power supply; it is characterized in that, also comprise the igniter drive circuit (7) that is connected in series with driving circuit for electromagnetic valve.
The igniter drive circuit is arranged between driving circuit for electromagnetic valve and the igniter.Triode TS8 can use metal-oxide-semiconductor, relay etc. to substitute in the igniter drive circuit.
The igniter drive circuit is connected on the driving circuit for electromagnetic valve delivery outlet, and in the time of driving circuit for electromagnetic valve work, igniter is also worked together.Further, when delay circuit was worked, driving circuit for electromagnetic valve was in the continuous firing state with the igniter drive circuit, need not to pin button ignition switch when the user uses gas-cooker is successfully lighted a fire.
To describe firing circuit below, its annexation specifically as shown in Figure 3.
When button ignition switch (2) is pressed, capacitor C 3 chargings in the delay circuit (4) also are full of rapidly, the C3 positive pole presents high level makes triode TS6 conducting, triode TS7 conducting in the TS6 conducting output low level control driving circuit for electromagnetic valve (6), magnetic valve (8) coil electricity makes that magnetic valve is held; Simultaneously because triode TS7 conducting, the C pin place voltage of TS7 is greater than the triode threshold voltage, triode TS8 and TS9 conducting in the igniter drive circuit (7), igniter (3) electric work, produce the high tension ignition pulse that continues.
After unclamping button ignition switch, capacitor C 3 is slowly discharged by resistance R 9, magnetic valve (8) coil continues energising and keeps magnetic valve to be held, igniter (3) also continues continuous firing, after thermocouple (5) has obtained enough flame inductions, the adhesive that thermocouple (5) keeps magnetic valve for magnetic valve (8) coil power supply, that guarantees to burn continues.
When capacitor C 3 was discharged to voltage and is lower than the triode threshold voltage, TS6 closed, and TS7, TS8, TS9 also close thereupon, and igniter (3) is no longer worked, and magnetic valve (8) is controlled by thermocouple only.
When component failure causes among TS6, TS7, TS8, the TS9 any one unexpected unlatching, igniter drive circuit (7) also can be opened thereupon, igniter (3) can continue to send high tension ignition pulse, if gas-cooker is in fired state and meets accident when stopping working at this moment, flame can be rekindled immediately, does not have the possibility of gas leakage; Do not meet accident when stopping working if gas-cooker is in fired state, do not have potential safety hazards such as gas leakage yet; If gas-cooker is not in fired state, because main air valve is in closed condition and magnetic valve needs mechanical force to back down, so there is not the potential safety hazard of unexpected burning or gas leakage yet.And because the action of the constant ignition of igniter (3) can make the user find fault rapidly.
When component failure causes among TS6, TS7, TS8, the TS9 any one unexpected open circuit, igniter (3) can't be worked, and cause gas-cooker to work, and this fault does not have potential safety hazard, and the user can find fault immediately.
The utility model when being applied to multiple head, only needs many these drive circuits of cover to realize applicable to single burner or multiple head, promptly also comprises being connected in series of a plurality of driving circuit for electromagnetic valve and igniter drive circuit.Such as, when being applied to two burners, only needing two these drive circuits of cover, three burners are exactly three covers, and the rest may be inferred.Has extremely strong extensibility.
The utility model not only can solve the problem of band thermocouple extinguish protection function gas combustion range ignition difficulty, has also solved the potential safety hazard of the gas leakage that produces owing to the components and parts inefficacy.Entire circuit is simple in structure, and is with low cost, applicable to any electric power system more than the 1.2V.
The above only is a preferred implementation of the present utility model; should be understood that; for the person of ordinary skill of the art; under the prerequisite that does not break away from the utility model principle; described holding circuit is made some improvements and modifications; such as with triode in the electronic component substitution point firearm drive circuits such as relay or metal-oxide-semiconductor etc., these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. gas combustion range ignition fail-safe circuit; comprise power supply, the igniter that links to each other with power supply and magnetic valve, the button ignition switch that between power supply and magnetic valve, is connected in series successively, delay circuit, driving circuit for electromagnetic valve; it is characterized in that, also comprise the igniter drive circuit that is connected in series with driving circuit for electromagnetic valve.
2. according to the described gas combustion range ignition fail-safe circuit of claim 1, it is characterized in that the igniter drive circuit is arranged between driving circuit for electromagnetic valve and the igniter.
3. according to claim 1 or 2 described gas combustion range ignition fail-safe circuits, it is characterized in that the igniter drive circuit comprises resistance R 13, triode TS8, resistance R 12 and the triode TS9 that is connected in series successively.
4. according to the described gas combustion range ignition fail-safe circuit of claim 1, it is characterized in that triode TS8 uses metal-oxide-semiconductor or relay to substitute in the igniter drive circuit.
5. according to the described gas combustion range ignition fail-safe circuit of claim 1, it is characterized in that, also comprise being connected in series of a plurality of driving circuit for electromagnetic valve and igniter drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920267768XU CN201522010U (en) | 2009-10-21 | 2009-10-21 | Protective circuit for gas stove ignition failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920267768XU CN201522010U (en) | 2009-10-21 | 2009-10-21 | Protective circuit for gas stove ignition failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522010U true CN201522010U (en) | 2010-07-07 |
Family
ID=42508186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920267768XU Expired - Lifetime CN201522010U (en) | 2009-10-21 | 2009-10-21 | Protective circuit for gas stove ignition failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201522010U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822254A (en) * | 2014-01-26 | 2014-05-28 | 陕西科技大学 | Device capable of shortening ignition time of gas stove |
| CN112212359A (en) * | 2020-09-28 | 2021-01-12 | 华帝股份有限公司 | Power-saving control system and control method for igniter |
-
2009
- 2009-10-21 CN CN200920267768XU patent/CN201522010U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822254A (en) * | 2014-01-26 | 2014-05-28 | 陕西科技大学 | Device capable of shortening ignition time of gas stove |
| CN112212359A (en) * | 2020-09-28 | 2021-01-12 | 华帝股份有限公司 | Power-saving control system and control method for igniter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |