A kind of fixing timing anti-dry ignition controller of cock valve type gas-cooker
Technical field
The present invention relates to gas-cooker technical field, particularly to the fixing timing anti-dry ignition controller of a kind of cock valve type gas-cooker.
Background technology
In the application history of gas-cooker, there is dry combustion method phenomenon because using gas-cooker in the most most family, the generation of this kind of situation, little then damage culinary art food materials and pan, the most then can cause fire.During using gas-cooker, anti-dry is always the problem that those skilled in the art's long felt is unfulfilled.Wherein, useful temperature sensor directly detects the cooking bottom temperature corresponding with burner centre, thus reaches the purpose of anti-dry.But pan shape used by each family, not of uniform size, aforesaid way is difficult to allow temperature sensor and the bottom of a pan have good contact and then accurately to detect the true temperature in the bottom of a pan, it is difficult to reach the purpose of anti-dry.Simultaneously, even if the bottom of a pan true temperature can be detected by complicated technological means, but height above sea level is different residing for user, or use open type culinary art or use pressure cooker or select quick-fried, fried etc., in its pot, the temperature needed for food materials is entirely different, difference can be very big, even if using complicated control mode, it is also difficult to reach the purpose of anti-dry.
Use timing mode to prevent dry combustion method, be a technical scheme preferably.Existing a kind of gas utensil with the artificial peripheral hardware intervalometer setting timing, if Chinese Patent Application No. is CN201310393825, entitled " gas stove timing impulse controller and the gas-cooker of this impulse controller of employing " discloses a kind of method by changing software, and the impulse controller of common variable interval upgrades to the commutator pulse controller with timing extinction function.It is known that general gas stove with timing fire-out function, when user uses if any arranging timing, then can play certain anti-dry effect when left unguarded, but can not anti-dry completely;When user is not provided with timing, then do not have the effect of anti-dry.From above-mentioned patent application document, during the pressing of plug valve knob, it is possible to the former timing set is cancelled, and now gas-cooker does not the most just have the effect of anti-dry.Therefore, to guarantee that gas-cooker does not occur the gas stove with timing fire-out function disclosed in dry combustion method phenomenon, existing timing gas cooker or above-mentioned patent application document completely, all cannot accomplish.
Summary of the invention
It is an object of the invention to provide the fixing timing anti-dry ignition controller of a kind of cock valve type gas-cooker, it can make gas-cooker in burning work overall process, and set time intervalometer all can be automatically into countdown duty, it is achieved the purpose of anti-dry completely.
Technical solution proposed by the invention is such that
A kind of fixing timing anti-dry ignition controller of cock valve type gas-cooker, including the ignition controller being arranged on cock valve type gas-cooker, gas-cooker is provided with multiple burner, each burner is equipped with plug valve, it is provided with single-chip microcomputer in described ignition controller, this single-chip microcomputer respectively with the high-voltage pulse generating circuit of corresponding burner, flame detection circuit, driving circuit for electromagnetic valve, warning circuit and plug valve microswitch are electrically connected, described high-voltage pulse generating circuit outfan and the ignition electrode being contained in burner side are electrically connected, be provided with in described single-chip microcomputer multiple with stove in multiple burners set time intervalometer one to one;At the flame detection circuit of the burner of any one correspondence, described set time intervalometer detects that flame signal plays entrance countdown duty, in the course of the work, the plug valve microswitch of any one burner of gas-cooker is switched on, and corresponding set time intervalometer is i.e. replied timing and reenters countdown duty, when corresponding set time intervalometer countdown near zero time, warning circuit action, drive alarm work, when corresponding set time intervalometer countdown is to zero, corresponding driving circuit for electromagnetic valve quits work, corresponding closed electromagnetic valve combustion gas gas circuit.
Fixing timing scope set by set time intervalometer can be chosen 15~40 minutes, is based on statistical method time the most out.Time of fire alarming section before set time intervalometer countdown near zero chooses 10~60 seconds.The electromagnetic valve that driving circuit for electromagnetic valve is driven can be self-priming valve or hand push electromagnetic valve, and described self-priming valve is in being separately positioned on stove in the blast tube of each burner, and described hand push electromagnetic valve is positioned at the plug valve of correspondence.Described alarm is the combination of luminescence display or luminescence display and buzzer.
Select fixing timing 15 to 40 minutes scopes, be the culinary art custom according to China most people and each department, even if left unguarded gas-cooker, be also unlikely to that dry combustion method phenomenon occurs.And in above-mentioned timing interval, general culinary art can complete the most substantially.In gas-cooker, each burner is independently provided with luminous alarm and shows, corresponding set time runs near to timing zero time, corresponding luminescence display allows user tell the timing near zero of which burner, chimes of doom can also be simultaneously emitted by, now user only need to click the plug valve knob of the burner that luminous alarm shows, its microswitch is connected, corresponding set time intervalometer can be replied timing and reenter countdown duty, such as left unguarded, corresponding electromagnetic valve is turned off when countdown is to zero, therefore can ensure that gas-cooker will not occur dry combustion method phenomenon in work overall process.
Compared with prior art, the present invention has a following remarkable result:
The gas-cooker of the present invention is under any duty, as long as the timing countdown that stove any one burner interior arrives its set time intervalometer is zero, i.e. can Self-shut electromagnetic valve, cut off gas circuit, and the selection of this fixing timing is can to complete based on culinary art, even if left unguarded, also can safety shutdown electromagnetic valve.When there being people to guard, as burner need to work on, as long as then will press under plug valve knob, plug valve microswitch is connected once, and set time intervalometer can be replied again timing and be reentered countdown duty.
Under the countdown Working Status Monitoring of the set time intervalometer being in correspondence when this invention ensures that each burner operation of gas-cooker, when there being people to guard, when some set time intervalometer timing will to zero time, burner as corresponding in gas-cooker need to work on, alarm unit is then had to remind, next set time timing can be gone successively to easily interval, as then can Self-shut electromagnetic valve during left unguarded, gas-cooker and each burner thereof is made to be in the monitoring of set time intervalometer countdown duty of each correspondence under any working condition, and this monitoring is irrevocable.So, the gas-cooker just making the present invention can realize the purpose of complete anti-dry in work overall process.
Accompanying drawing explanation
Fig. 1 is the electrical structure schematic diagram of the fixing timing anti-dry ignition controller of a kind of cock valve type gas-cooker of one embodiment of the invention.
Detailed description of the invention
By example below, the present invention is further elaborated.
Embodiment 1
Shown in Figure 1, the fixing timing anti-dry ignition controller of a kind of cock valve type gas-cooker is made up of single-chip microcomputer 5, plug valve microswitch 1, ignition electrode 2, high-voltage pulse generating circuit 3, flame detection circuit 4, set time intervalometer 6, warning circuit 7, alarm 8, driving circuit for electromagnetic valve 9.This ignition controller is arranged in cock valve type gas-cooker, and this gas-cooker is provided with multiple burner, and the gas-cooker of the present embodiment is provided with two burners.Each burner is equipped with plug valve 1, high-voltage pulse generating circuit 3, flame detection circuit 4, warning circuit 7, alarm 8 and driving circuit for electromagnetic valve 9, and the corresponding interface with single-chip microcomputer 5 is electrically connected respectively, the ignition electrode 2 of each burner is connected with corresponding high-voltage pulse generating circuit 3 outfan.Single-chip microcomputer 5 be provided with two with stove in two burner set time intervalometers 6 one to one, said two set time intervalometer 6 is connected with the cpu signal input in single-chip microcomputer 5 respectively.At the flame detection circuit 4 of corresponding burner, described set time intervalometer 6 detects that flame signal plays entrance countdown duty, in the course of the work, the plug valve microswitch 1 of any one burner of gas-cooker is switched on, and corresponding set time intervalometer 6 is i.e. replied timing and reenters countdown duty, when this set time intervalometer 6 countdown near zero time, warning circuit 7 action, drive alarm 8 to work, point out this gas-cooker the need of working on.When between when clamped, intervalometer 6 countdown is to zero, corresponding driving circuit for electromagnetic valve 9 quits work, corresponding closed electromagnetic valve combustion gas gas circuit.
Fixing timing scope set by set time intervalometer 6 can choose 15~40 minutes.Time of fire alarming section before set time intervalometer 6 countdown near zero chooses 10~60 seconds.The electromagnetic valve that driving circuit for electromagnetic valve 9 is driven can be self-priming valve, it is also possible to be hand push electromagnetic valve, and self-priming valve is arranged in each burner blast tube, and hand push electromagnetic valve is located in plug valve.Alarm 8 is the combination of luminescence display or luminescence display and buzzer.
The gas-cooker of the present embodiment uses two hand push electromagnetic valves blast tube respectively to two burners to make break-make control, setting two set time intervalometers 6 in single-chip microcomputer 5 corresponding with two burners respectively, two-way warning circuit 7 outfan is connected to and two burner light emitting diodes one to one and a shared buzzer respectively.When the knob on the plug valve that any of which burner is corresponding is pressed also turn, plug valve microswitch 1 is connected and opens blast tube, the driving circuit for electromagnetic valve 9 of ignition controller works, hand push electromagnetic valve adhesive, combustion gas enters in corresponding burner, and the spark ignition that the high-voltage pulse provided by corresponding high-voltage pulse generating circuit 3 is sent by ignition electrode 2.After corresponding flame detection circuit 4 detects flare up fire, corresponding set time intervalometer 6 i.e. enters countdown duty, and the timing of the set time intervalometer 6 of the present embodiment chooses 15 minutes.After pressing when the knob of above-mentioned plug valve and entering ignition procedure, air flue opened by turn plug valve, as long as flame can be detected by flame detection circuit 4 within the several seconds that ignition procedure performs, then this burner will work to accident extinguishing always or artificial close fire or set time intervalometer 6 countdown and automatically close fire to zero.During said burner works, as the plug valve of another burner of this gas-cooker carries out ignition operation as described above, then another set time intervalometer 6 can enter 15 minutes countdown duties.In above-mentioned work process, click downwards such as arbitrary plug valve knob and make its microswitch 1 connect once, then two set time intervalometers 6 all can be replied 15 minutes and reenter countdown duty.When between when clamped, intervalometer countdown i.e. remained 10 seconds to 14 minutes 50 seconds, warning circuit 7 drives alarm 8 to send prompt tone and luminescence display, if now guarding if any people and also need not close burner, the most only need to press the knob of the plug valve of correspondence, countdown in 15 minutes can be reentered, when otherwise gas-cooker work to corresponding set time intervalometer 6 countdown is zero, ignition controller is shut off corresponding driving circuit for electromagnetic valve 9, corresponding hand push electromagnetic valve takes off valve, combustion gas is cut off, gas-cooker safe shutdown.In the present embodiment, set set time intervalometer 6 countdown to 14 points 50 seconds, i.e. during residue 10 seconds, ignition controller starts warning circuit 7, and driving alarm 8, to send prompt tone and luminescence display to count down time be zero.
Embodiment 2
Shown in Figure 1, the cock valve type gas-cooker of the present embodiment is provided with four burners, each burner respectively on corresponding plug valve equipped with hand push electromagnetic valve, remaining structure is same as in Example 1.Be respectively equipped with in the single-chip microcomputer 5 of ignition controller four with stove in four burner set time intervalometers 6 one to one, each burner further respectively has corresponding peripheral hardware intervalometer.The timing of set time intervalometer 6 chooses 40 minutes.Set time intervalometer 6 corresponding after arbitrary burner ignition enters duty starts countdown, enters ignition operation state successively if any other burners therebetween, then the set time intervalometer 6 of its correspondence all can enter countdown duty from 40 minutes.When arbitrary burner operation and externally set intervalometer set timing, then this burner is controlled by its peripheral hardware intervalometer, neither affect other burner operation, do not controlled by the set time intervalometer 6 of the burner of its correspondence, when the timing countdown of peripheral hardware intervalometer is zero, this burner cuts out;When peripheral hardware intervalometer sets back to zero timing when the burner is in operation, then set time intervalometer 6 recovers to control.When between when clamped, intervalometer 6 its countdown as in Example 1 is moreed than 60 seconds, alarm 8 sends prompt tone and luminescence display, now, as gas-cooker need to work on, then click the plug valve knob of correspondence, connect plug valve microswitch 1, set time intervalometer reenters countdown by 40 minutes timings, when countdown is zero, corresponding driving circuit for electromagnetic valve 9 quits work, and corresponding hand push electromagnetic valve power-off also closes the air flue of burner.