CN87211583U - Automatic gas range with timing autoigniter - Google Patents

Abstract

The utility model discloses a novel automatic gas range with a timing auto-igniter. The utility model initiates the utilization of the gas range valve to realize the automatic control of the gas flow, and originally creates a highly reliable new control probe of the boiled water and a new extinguishing protective method with low cost, successfully solving the problems of the automatic subsidence of the fire, the integration of the circuits and the power supply of the dry battery. The utility model has the advantages of high stability, low cost, less power consumption, simple operation, convenient operation, multiple functions, gas saving, direct installation and safety. The automatic gas range with timing auto-igniter can timing open and ignite fire, automatically finishing the complete work of boiling water, steaming rice, stewing meat, decocting medicine, etc. and bringing benefit to the broad gas users and in particular to the double-income families.

Description

Automatic gas range with timing autoigniter

The invention discloses that a kind of energy is timing automatic to be opened the automatic gas stove of fire and can directly be installed on the general gas kitchen range and make it have the gas-cooker automatic controller of above-mentioned functions.

The gas-cooker of present domestic use does not have other control function automatically except that the electronic ignition of minority energy.From publishing in magazine " external public science and technology " (quarterly, 86 years the 2nd phases) can see in one piece of article " research trend of household fuel gas utensil " (richness is known the man in author (Japan) bamboo) and draw: nowadays external kitchen range automatically are in the development stage, the last word of having developed also only has a few functions, and the cost height is difficult to popularize for the moment.

In recent years I have succeeded in developing three generation products having spent a lot of energy aspect the automatic control of gas-cooker, have applied for three and obtain a Chinese patent accordingly, can be used as the present invention's reference background data in (i.e. the 4th generation).They are: " gas range autocontrol valve " (applying date: on April 1st, 85, the patent No.: 852004303); " full-automatic gas cooker " (application number: 86100023); " full-automatic multi-functional gas-cooker " (application number 86106677,86208008).

The model machine (the especially third generation) of above-mentioned patent and patent application trial-production, all observed " improving four principles of coal gas implement " of proposing in above-mentioned " research trend of household fuel gas utensil " unintentionally, and made the author proposed at that time, the still unprecedented a lot of reality that has been thought of as both at home and abroad.Domestic several producers produce as a trial at present, can put on market soon.

Purpose of the present invention; be further to improve and the above-mentioned automatic gas stove of improvement; as improve regularly stability; invent a kind of new wide adaptability; the water that reliability is high is opened probe; strengthen safety precautions etc.; especially make automatic kitchen range that such function is arranged: it can open burnt gas valve with any time (when staying out as working) of clock and watch or timer preliminary election automatically the user; it is lighted; automatically finish afterwards such as boiling water; whole work of steamed rice or steamed bun etc. (as big fire regularly; automatically fire diminishes; little fire regularly; water is opened or the ripe warning of meal; automatic Guan Huo etc.); and to the anything unexpected that takes place midway (as not catching fire; air nozzle catches fire; it is flame-out etc. that wind water overflows) under the situation of unmanned pipe; can take measures rapidly; automatically close source of the gas, to guarantee safety.

Realize that one of key of the present invention is the mode that opens and closes combustion gas, do not continue to use traditional magnetic valve, but adopt a kind of new method of using raw coal gas kitchen valve, specially be described below, referring to Fig. 3.10 is former gas-cooker valve among the figure, the 4th, and switching knob, the 14th, rotation axis.Outside 14 is added with sleeve 16 near an end of knob, is fixed with gear (or worm gear) 23 on it.The power of motor 31 reaches 23 through deceleration train 25, drives sleeve and through clutch 15, axle 14 rotates valve 10, turns down or close combustion gas automatically.And motor makes the valve counter-rotating through said mechanism equally when rotating with last rightabout, opens automatically.The bent axle 30 that is located at during this time in the deceleration train in certain level (as the third level) rotating shaft is stirred ignition switch 24, and repeatedly combustion gas is lighted in discharge automatically.And the manual operation in daily, as long as knob 4 is pushed away inward, clutch promptly separates, axle 14 drive valves can be in filling the scope of being permitted arbitrarily turn with stop, having solved satisfactorily manually and the contradiction of operation automatically.

Be fixed with driving lever (or plectrum) 13 on switch shaft 14, it plays an important role in the automatic control of gas-cooker: burnt gas valve is in the closed position, and it presses 12(is closed portion automatic power switch K ₂) make motor and relative section outage and make the timing capacitor discharge.Burnt gas valve manually goes to fully open position and omits back and twist, and it stirs and decontrol 28(is the manual ignition K switch ₅) in order to igniting.Burnt gas valve is threaded to automatically near fully open position, and it presses 29(is opening section automatic power switch K ₂) make motor and relative section outage and make the timing capacitor discharge.Burnt gas valve automatically returns and is screwed onto certain position, and it stirs the 17(fiery travel switch K that promptly diminishes automatically ₃), making the motor stall, valve is parked in has promptly realized the fire that diminishes automatically herein.And K switch ₃Be installed in one can be outside sleeve 16(or 16 with the fixing annulus 18 of shell) on the plate 19 that rotates among a small circle, dial 19 handle 6 and can make K ₃Be in different positions, realize that promptly little fire presets.

Another key of the present invention is the design of electronic circuit, its function is the most complete, cost is minimum, power consumption is minimum in order to make, easy and simple to handle, safe and reliable, I update by well-designed repetition test, tried into the circuit that can reach above-mentioned requirements, its theory diagram as shown in Figure 4, can be divided into close, open, drive, light a fire, warning, power supply six major parts, actual is a complete automatic control system.It has multiple perception device (as water open detection, flame-out survey, nozzle catches fire and surveys etc.); have to these detectable signals analyze, relatively mechanism (opening detection circuit, blowout protection circuit, the nozzle holding circuit etc. of catching fire) and feedback executing agency as water (as through close buffered gate, close priority, the motor commutation with drive, motor is rotated to finish corresponding action according to signal).Simultaneously; its is inner to also have program control system, as time opening, automatically point catch fire, the coal gas knob start working automatically, carry out automatically once opening various holding circuits big fire regularly, to the scheduled time diminish automatically fight little fire regularly, total time to report to the police earlier, time-delay automatic Guan Huo of a period of time etc.Each wire list illustrates the logical relation of each several part among the figure, only introduction is done some in special innovative place below.

That the RC timing circuit has is simple in structure, cost is low, many advantages such as adjustable continuously regularly, but fatal shortcoming is: electrochemical capacitor (especially Lian Jia alminium electrolytic condenser), no power uses when longer, and leakage current can heighten, and makes regularly especially long-time timing accuracy that bigger decline is arranged.For solving the difficult problem that this runs into aborning, the spy has increased the automatic aging device, as the K switch among Fig. 5 _1-2, it is actual to be power switch, one cutter, aging to the electric capacity charging automatically when power cutoff, can make electric capacity in shape all the time, has guaranteed stability regularly.Diode D among Fig. 5 ₁Provide as power switch K ₂C during ground connection ₁The repid discharge path perhaps increases triode Q and base resistance R thereof, as ignition switch K ₅Make C during action ₁Repid discharge, these all will make timing automatic initial from lighting a fire (burn-in will make RC regularly can use) on many electrical equipment.

Automatically the timing of opening can be selected multiple mode for use, can set up as shown in Figure 6 by W ₄, C ₇And long-time (as 4 hours) timer of door (4) composition, also can set up a clock jack (CK ₁), and to external alarm clock (or noisy clock or the table of other band) transformation slightly (as long as regularly connecting an equivalent switch Kt); Perhaps with above-mentioned both combinations, when this moment, plug inserted, clock was regularly pulled up the timer of providing for oneself and is promptly inserted; Perhaps the gas-cooker control section can ad hoc clock and watch, and this box-type gas kitchen range for top grade is more suitable.

Adopt electronic pulse ignition, its electronic and the available multiple usual way that boosts, the place that the present invention is special is surperficial on ignition switch, please see Figure 7.K ₅Can only establish and be installed on the guidance panel with K5 ', also more than two, according to the connection among the figure, promptly each normally closed switch cutter is serially connected in boost capacitor (C ₉) and high-tension transformer (B ₂) first inter-stage, normal opened contact connects power supply respectively, each switch places the foregoing position that can be stirred by dead man, then the knob of each kitchen range (as left and right kitchen range and can add baking box) all can one be twisted to put and is caught fire, and makes easy to operate.K5 among the figure " be foregoing auto lighting switch, increase K4-2 and be in order to prevent at manual mode and K5 " igniting is malfunctioning when disconnecting.

The blowout protection igniting prevents that the delay circuit of misoperation is by R ₇, C ₄And door (5) forms a (see figure 8), door (5) door here, and also one or more triodes are as long as can make its output high level occur behind the suitable time-delay.The flame detecting element can use thermistor (as Rt-2), selects negative temperature characteristic here for use, transfers R ₉Can obtain suitable inversion temperature (if positive temperature characterisitic, then Rt-2 and R ₉Location swap).The best connection of thermistor such as Figure 12 (b) are drawn, and it needs time delay short, and the action after flame-out is fast, because of the lead-in wire of thermistor is wanted double as probe (56), and need be with heat-resisting as making such as stainless steel wire or nickel filaments.Flame detecting is the available light sensing device also, Figure 12 (C) a kind of scheme of having drawn.The flame baking reflector is not held the ruddiness that sends, and shines on the light-sensitive device 67 through lens 66, and fire puts out ruddiness and disappears, and light-sensitive device sends corresponding signal immediately, is swift in response.Among Figure 12,61 all is lead-out wires of sensitive detection parts, the 65th, and the shell of device.69 is bimetal leafs among Figure 12 (d), the 68th, and 68 degrees of tightness that contact with 69 are transferred in quiet contact pin, can concoct suitable operating temperature, but this adjusting are cumbersome.

It is because opening igniting is under people's situation about being absent from the scene that these kitchen range are provided with the nozzle protection of catching fire, just in case return-air is lighted nozzle will have an accident in the igniting, thermistor (Rt-3) has been installed for this reason, accent R around nozzle ₁₀Make its uniform temperature as 100 ℃ (about) time action.

Installation situation such as Figure 12 (a) on gas-cooker is drawn in above-mentioned several mechanism, and here, 1 is burner, and the 2nd, the igniting spray point, the present invention adopts cheap aluminium wire, and result of use is pretty good.The 56th, the flame probe, the 57th, Sensitive Apparatus (promptly introduce above or thermistor, or light-sensitive device or bimetal leaf or other).They are through insulation board 62, and bending 60 is installed on the burner, and 59 is the air nozzle protection device of catching fire, and the 71st, thermistor, the 58th, its lead-in wire, 70 all is sealing-plugs.

Motor drives with commutation can use relay, and also available electron circuit is to reduce cost.Fig. 9 is that I moved a kind of circuit that some brain is found out, and the characteristics of its wiring are: four triodes (are positive-negative-positive Q ₃, Q ₈WPW type Q ₄, Q ₇) colelctor electrode connect motor, emitter stage connects the power supply of corresponding polarity, base stage meets in addition two triode (Q ₂, Q ₆) C, e interpolar, and the base stage of these two pipes or through resistance with close or the output of opening section is joined, or amplify (Q by one-level again ₁, Q ₅) meet the resistance (R of this moment again ₁₅, R ₁₇) optional big, to alleviate the burden of prime.Here, triode Q ₉Play an important role, promptly signal is all arranged in particular cases, Q on both sides ₉With the signal shorts of opening section, make closed portion that priority (not only not so motor can't move, and also can burn out pipe) be arranged.

This circuit can be used for powered battery because power consumption is very little, and this is an advantage of the present invention.If add external power supply, it is a kind of that Figure 10 provides.Supply hub CK ₂Connection its characteristics are arranged, promptly two stills connect battery the two poles of the earth respectively, moving plate and a still are indirect

Diode D ₁₄This connection has a lot of benefits, when external power supply plug does not insert, and D ₁₄By short circuit, self-contained battery can not have the power supply of consume ground; During insertion, additional power source can pass through D ₁₄Reverse leakage to battery charge, can prolong its service life, and prior, if external power supply has a power failure suddenly, self-contained battery is through D ₁₄Automatic power guarantees controller operate as normal (this kind connection, many household electrical appliance such as radio cassette player etc. can be used for reference).Figure 10 left side provides a kind of battery check circuit, and its structure is very simple, only by power supply " sampling " resistance R ₂₇And R ₂₈, triode Q ₁₄And light emitting diode LND ₂Form, use ignition switch K ₅As long as the brightness that the user has a look when manual ignition has got final product the new and old of electrolytic cell.If brightness is very little even do not work, represent that this has changed battery.

At last, introduce new invention of this project: water is opened probe mechanism.Boiling water is the critical function of automatic gas stove, and the user uses at most.It is a difficult problem that yet water is opened detection always, does not see comparatively ideal way so far.Sonde configuration of the present invention is seen Figure 11 (α), and it has train wheel bridge 40, middle clamp plate 41, lower plate 48 three-deckers, and wherein the shape of upper and lower clamping plate is seen Figure 11 (b), and the structure of middle clamp plate is seen (C), it by

The middle intermediate plate 41 of shape, thermistor 43 adiabatic connecting pieces 49, axle 46, banking stop 51, spring 45(or add 47 again) etc. composition.The use of this probe is also very convenient, as long as middle clamp plate is embedded in pot cover or pot lid 42 and pot or the kettle 44, upper and lower clamping plate are clamped it and got final product.Water is opened back steam ejection, and thermistor is heated, circuit operation.As seen, its essence is the steam sampling, and is not tight to temperature requirement, thereby got rid of such as flame size, temperature height, air pressure change or the like foeign element, and dispatching from the factory once mixes up, and reliability can reach absolutely, this real accomplishing something difficult and so deserve praise.In addition, three-decker also can be reduced to two layers, being that upper and lower intermediate plate is counter establishes one, two springs only stay corresponding one, with the middle clamp plate proper extension, clamp pot, kettle or the lid of kettle (pot) in the use, middle intermediate plate place the slit (its shortcoming is that water is opened bonnet and beated, and will influence the reliability of its action).

By parts such as electronics, machinery, annexes the present invention has been done more detailed introduction above.Compare with domestic and international prior art, it has a series of superiority, at first have a talk control combustion gas new method, than traditional magnetic valve, have following six advantages at least:

1, because a manual and automatic shared valve descends designs simplification, cost, the minimizing of gas leakage chance; 2, make easy to operate; 3, can diminish the automatically fire and the flame size of little fire can be regulated (this is that general solenoid valve can't be realized) in advance arbitrarily; 4, power consumptive province, available powered battery (general solenoid valve is then impossible); 5, solved a difficult problem that does not change the direct installation of gas circuit; 6, combustion gas is closed after-burning cyclone button and can be automatically reset (and in the solenoid control mode.This is still an an open question so far).

Secondly, see that on the whole gas-cooker of the present invention has following eight big characteristics or advantages:

1, the various gas-cooker of many, the domestic production so far of function, only minority has the manual electronic ignition function, and the function of external like product is also only established several, and the function of these kitchen range has following nearly 20: time opening; Automatically igniting; Manual ignition; Auto extinguishing; Self-ignition plays big fire regularly; Any time regularly; Little fire presets; Automatically fire diminishes; From the little fire of the fire that diminishes regularly; After this any time regularly; Automatically boil water or warm water; Various automatic warnings (regularly, the fire that diminishes, water open, light a fire, unlatching, self-insurance etc.), warning automatic time delay and termination; Forget and close fire protection automatically (warning, flame-out); Gas valve does not reset and reports to the police automatically and close tight; Battery is checked and is reported to the police; The mechanical part fault alarm; Flame-out protection automatically; Air nozzle catches fire and protects automatically; Unexpected power failure reserve battery automatic power or the like.

2, cost is low, and generally speaking function increases, and cost will raise.And the cost of automatic control section with above-mentioned functions is only about 25 yuan, and its " ratio of performance to price " advantage is quite obvious, and this penetration and promotion for it provides an essential condition.

3, little power consumption: power consumption and electronic watch in using at ordinary times are similar, 10 milliamperes of warning power consumption less thaies, and the bigger motor of power consumption is only worked about several seconds.Because little power consumption, available dry cell power supply makes it to have broken away from civil power, will bring very big benefit at aspects such as safety, installations;

4, economize combustion gas: usually can not in time stop working after ordinary gas stove water is opened, and steam thing also often owing to do not remember the time clearly or forgotten the pass fire and overlong time, this all causes the waste of combustion gas, and these kitchen range then can avoid above-mentioned situation to take place fully.This saving to combustion gas, accumulation for a long time, in general, quantity is with considerable, no matter to user or all meaningful to country;

5, safe and reliable: because accident and fire that gas-cooker causes are of common occurrence, usually cause the very big loss of people's lives and properties, these kitchen range will be made contributions for addressing this problem;

6, directly install: as previously mentioned, user oneself can be with the general gas range " full-automation " that is using, and this is an another big advantage of the present invention.

7, simple to operate: have above-mentioned multi-functional automatic equipment, two kitchen ranges only have several functional units on the panel, make that common people (as the housewife) are very fast can be grasped.

8, easy to use: especially these kitchen range can be cooked by time opening automatically, and this will be to vast coal gas user, and especially man and wife both employed bring glad tidings.

Penetration and promotion of the present invention is in a word prevented fires, is saved the energy and make things convenient for user's aspects security personnel, will have a positive effect.

Description of drawings:

What Fig. 1 drew is to use the widest a kind of vertical eyes gas range in China, and wherein 1 is burner, the 3rd, and the kitchen range face, the 5th, the kitchen range frame, the 7th, jet, 8 is automatic controller of the present invention, the user only uses on the raw coal gas kitchen knob plate two screws 4 and directly installs.Other, the 2nd, the igniting spray point, the 6th, little fire presets handle.

Fig. 2 is a kind of boxlike eyes kitchen range, and developed recently is very fast, and controller 8 of the present invention promptly is contained in the box, becomes a complete automatic gas stove.Below only drawn two kinds of typical gas appliances, and other various kitchen range, as single-hole range, multi-hole kitchen range, have the kitchen range of baking box etc.,, all can load onto automatic controller of the present invention, just do not introduced one by one here no matter which kind of combustion gas they use.

Fig. 3 is the schematic diagram of mechanical actuating mechanism of the present invention, and wherein (9) are the respectant schematic diagrames of analysing and observe of A-A, (b) are forward-looking schematic diagram, and a kind of switch (C) has drawn.Fig. 3 front is existing to be introduced in detail, and wherein not elsewhere specified have: sleeve clamp 22, and sleeve 16 is linked to each other with support 26, support is by screw 21 and 21 ' fix with kitchen range box header board 27.The 9th, fuel gas pipeline, 11 is springs, press dial plate 13 with sleeve on form clutch (this only is a kind of form of clutch) apart from v notch v.

Fig. 4 is the theory diagram of automatic control section.

Fig. 5 is the circuit theory diagrams of RC timing and temperature adjustment.

Fig. 6 is the timing circuit schematic diagram of opening automatically.

Fig. 7 is each switch wiring diagram of electronic pulse ignition,

Fig. 8 is the flame-out automatic protection philosophy figure that catches fire with air nozzle.

Fig. 9 is motor commutation and the electronic circuitry that drives.

Figure 10 is the circuit diagram that power supply switches and checks.

Figure 11 is that three layers of water are opened sonde configuration figure.

Figure 12 (a) is the scheme of installation that blowout protection probe, air nozzle catch fire and pop one's head in and light a fire spray point, and (b) (c) is respectively thermistor (d), light-sensitive device.The structural representation of blowout protections such as bimetal leaf probe.(E) be the air nozzle sonde configuration schematic diagram that catches fire.

The automatic gas stove technology can form multiple product, can be divided into two big classes generally: be furnished with the automatic gas stove of automatic controller and the gas-cooker automatic controller that can directly be installed by the user.Product can become series, can be divided into following six types from simple and easy to senior:

1, simple type (type).As only establishing the electronic impulse ignition apparatus that is subjected to switch control, it is more easy to operate than commercially available push button electronic impulse ignition apparatus, if set up timing of the present invention again, water is opened the part of reporting to the police can form the multifunction electronic pulse ignition device, than the piezoelectric ceramic ignitor that ignition function is only arranged also cheap;

2, security control type (two types) except having automatic firing function, also is provided with important " flame-out protection device ".Blowout protection is more abroad, and domestic have produced in small quantities in recent years, but several significant disadvantages are arranged: one, and complex structure is difficult for making; Its two, cost is higher, only this function ratio complete unit of the present invention is also high; Its three, inconvenient operation is generally wanted Push switch button (can not let go) on the other hand, catches fire by igniting button point on the other hand, the hand by release knob after about ten seconds just can unclamp, obviously, it is trouble that such opening process uses.The present invention is then different, and the user need only twist jet, and igniting, blowout protection are all started working automatically, is very much convenient.

3, popularize A type (three types), on the basis of two types, increase, all other function the fire that diminishes automatically except that automatic unlatching.The fire owing to do not diminish, except that adopting mechanical motion mechanism of the present invention, also can be without motor, gear, and adopt the quick closedown device of first generation product, designs simplification, cost are descended, and the gas-cooker full automatic controller that it forms can be by the gas range of user installation in any pattern.

4, popularize Type B (four types): on the basis of two types, increase all other function except that automatic unlatching, actual is the third generation product of automatic gas stove.

5, automatic open type (five types), the repertoire with present patent application is that the present invention introduces, also be automatic gas stove the 4th generation product.

6, high type (six types), be five types and the product that combines of my another patent application " gas-cooker automatic safety device ", the latter is installed on the gas main road, as " insurance of two roads " of automatic gas stove, i.e. in case meet accident (as open gas and do not put and catch fire, fire extinguish etc.) midway.Not only burnt gas switch is closed, and total air valve is also closed simultaneously.To guarantee safety, perfectly safe.

More than be that I think reasonable several combination, producer also can be with the wish of oneself, and optional feature forms various series of products, to satisfy user's different needs.

Claims (10)

1, a kind of gas-cooker is made up of kitchen range frame, kitchen range face, fuel gas pipeline, burnt gas valve, burner and burnt gas switch, it is characterized in that:

Be with sleeve 16 on the axle 14 of burnt gas switch 4; be fixed with gear (or pot wheel) 23 on this sleeve; the power of motor 31 reaches 23 through deceleration train 25; drive sleeve 16 and through clutch 15; axle 14 rotates burnt gas valve 10; to turn down or to close combustion gas; motor is when opposite the rotation; make the burnt gas valve counter-rotating to open automatically through said mechanism equally; in opening procedure; the bent axle 30 that is located in the deceleration train in the rotating shaft of certain level (as the third level) is stirred ignition switch 24; repeatedly combustion gas is lighted in discharge automatically; and manually switch 4 is pushed away inward; clutch 15 promptly separates; make switch 4 through axle 14 twisting valves 10; can in filling the scope of being permitted, rotate arbitrarily; this gas-cooker has automatic control equipment; form by following (or wherein certain is several) part: electronic circuit board; igniter; timing means; automatic open device; water is opened (or water temperature) detecting and controlling unit; warning device; flame-out protection device; the air nozzle protective device that catches fire; motor drives and changement; mechanical actuating mechanism; automatically the fire that diminishes presets mechanism with little fire; the switching of power supply and power supply and testing fixture and corresponding shell, panel and Operand device.

The water that can be used for this kitchen range is opened detection agency, by upper clip 40, lower clamping piece 48, the middle intermediate plate 41 that has temperature-sensing element 43 and connector 49 and the spring 45 between axle 46, upper clip and middle intermediate plate, spring 47 between middle intermediate plate and lower clamping piece is formed, (perhaps add banking stop 51 at middle intermediate plate one end, two springs can save one, perhaps upper and lower intermediate plate is only established one, with middle intermediate plate proper extension, form double-decker), open detection as long as place the pot (or kettle) and the slit of lid to do the steam sampling middle intermediate plate to carry out water during use.

2, gas-cooker according to claim 1 is characterized in that: driving lever (or plectrum) 13 is arranged on the switch shaft 14, and burnt gas valve is in the closed position, and it is automatic power switch K that this driving lever presses 12( ₂) make the outage of motor and closed portion and make relevant timing capacitor discharge, burnt gas valve manually goes to fully open position and omit back stubbornly, and it stirs and decontrol 28(is manual ignition K switch 5) discharge igniting.Burnt gas valve is threaded to automatically near fully open position, and it presses 29(is automatic power switch K ₂') make relevant down circuitry such as motor and unlatching and make relevant timing capacitor discharge, burnt gas valve returns automatically and is screwed onto certain position, and it stirs the 17(fiery K switch that promptly diminishes automatically ₃) make motor stall, valve be parked in the fire that promptly diminishes automatically herein, and K switch ₃Be installed in a jug 6 can be outside sleeve 16(or 16 with the fixing state's ring 18 of shell) on the plate 19 that rotates among a small circle, manually dial handle 6 and can make K ₃Be in different positions, promptly little fire presets.

3, gas-cooker according to claim 1 and 2 is characterized in that, said electronic circuit is made up of following (or wherein certain is several) part:

1., the core of electronic circuit is 1-2 sheet CMOS gate circuit integrated package (as door 1-4),

2. the RC timing circuit (as big fire regularly, little fire regularly, opening timing),

3. RC regularly or the automatic open circuit of clock,

4. thermistor water is opened probe (as Rt-1) and is regulated device (as W ₂),

5. RC delay circuit (as closing time-delay, the just flame-out time-delay of start),

6. the travel switch formula ignition circuit that diminishes automatically,

7. motor commutates and drive circuit,

8. the buzzer alarm circuit of piezo-electric ceramic sounding,

9. electronic pulse ignition circuit,

10. the blowout protection circuit that has the start time-delay,

(11) the air nozzle holding circuit of catching fire, (12) power supply switches and check circuit.

4, gas-cooker according to claim 1 and 2 is characterized in that said timing means has pair timing electrochemical capacitor (as C ₁) the charging aging equipment (as total power switch one cutter K1-2, when powered-down to C ₁Power up aging) and C ₁Quick discharging circuit (as diode D ₁Or triode Q and its base resistance R).

5, gas-cooker according to claim 1 and 2 is characterized in that, said automatic open device can be by following several constituted modes:

1. provide RC for oneself (as W ₄, C ₇And door (4)) timing circuit,

2. provide clock and watch (as machinery or electronic alarm clock or table) for oneself, its effect is equivalent to the K switch t that an energy is connected at predetermined instant,

3. be provided with the clock jack (as CK ₁), should make it Kt be connected at predetermined instant external clock and watch transformation this moment,

4. provide RC timing circuit and clock hole jack CK for oneself ₁, when the clock plug inserted, RC was regularly inoperative, and dialling down, back RC regularly can work as required.

6, according to the gas-cooker of claim 1 or 2, it is characterized in that the switch of said igniter (as K5, K5 ') and auto lighting switch K5 " series connection of normally closed switch cutter in boost capacitor (as C ₉) with high-tension transformer (as B ₂) elementary between, the normal opened contact of each switch directly (or through automatic switch) connect power supply (as+E), and auto lighting switch is (as K ₅The normally closed switch cutter of ") can be by manually---automatic change-over (as K4-2) short circuit or short circuit not.

7, according to the gas-cooker of claim 1 or 3, it is characterized in that said protective device:

1. it just prevents to close the delay circuit of fire (as by R by igniting ₇, C ₄Form with door (5)), the flame detecting element is (as thermistor R _T-2Or bimetal leaf 69 or light-sensitive element 67), the adjustment device is (as R ₉, bimetal leaf contact 68) and aforementioned self closing device form,

2. it can establish the air nozzle protective device that catches fire, by temp probe (as R _T-3), regulating element is (as R ₁₀) and aforementioned self closing device composition.

8, according to the gas-cooker of claim 1 or 2, it is characterized in that, said automatic switch is optional commercially available, also can make by oneself: on insulated substrate 39, be fixed with 2-3 shell fragment, wherein moving plate 37 is made by the material with favorable elasticity (as stalloy, phosphorus bronze sheet), it can or combine more than the shell fragment of (as 2) by one, the one end bending of still (as the shell fragment 36 of forming normally closed contact and the shell fragment 38 of forming normal opened contact) is provided with point more than one or 1 well to contact with moving plate 37.

9, gas-cooker according to claim 1 and 2 is characterized in that, said motor drives with changement and can finish with relay, also the available electron circuit: motor (M) is connected on the triode of four complementations (as Q ₃With Q ₄, Q ₇With Q ₈) inter-collector, their base stage with corresponding triode (as Q ₂Or Q ₆) C, e extremely continuous, emitter stage connects the power supply of corresponding polarity, and close driving through a triode (as Q ₉) have priority to opening to drive.

According to the gas-cooker of claim 1 or 2, it is characterized in that 10, said power supply switches and testing fixture:

(a) it can establish supply hub (CK ₂), directly (as a) linking to each other, direct and another still (as C) of another utmost point (as positive pole) joins a utmost point (as negative pole) of its internal power supply (as dry cell), between moving plate b and still C diode (D is arranged with the still of jack ₁₄), moving plate b connects power switch or directly to circuit supply.

(b) it can establish power check circuit: by the power supply sampling element (as R ₂₇, R ₂₈), amplifying device is (as triode Q ₁₄) alarm element is (as light emitting diode LND ₂) and switch (as use ignition switch K ₅) form.

Images