CN2558890Y

CN2558890Y - Auto-controlled ignition gas cooker

Info

Publication number: CN2558890Y
Application number: CN 02242914
Authority: CN
Inventors: 黄钦祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-08
Filing date: 2002-07-08
Publication date: 2003-07-02
Anticipated expiration: 2012-07-08

Abstract

The utility model discloses a self-control ignition gas cooker, which relates to the technical field of the gas cooker. A magnetic valve is arranged at a gas pipe of the cooker; a cooker body is provided with a movable conducting rod, inside movable space of which a movable component of a circuit switch is provided; an electric contact of the circuit switch is connected into a ignition control circuit and a magnetic valve control circuit, an output end of which is connected with coils of the magnetic valve. The utility model is applicable for daily cooking; after power-on, ignition can be realized by simply putting a boiler on a boiler rack of the gas cooker; instant flameout is realized when the boiler is removed from the boiler rack thereof. Compared with the prior art, the gas cooker fits for various structures of boilers and has the advantages of safe use, reliable ignition and flameout.

Description

The automatically-controlled ignition gas-cooker

Technical field

The utility model relates to the gas-cooker technical field, especially a kind of gas-cooker with automatic igniting, extinguishing function.

Technical background

At present, most of gas-cookers are to adopt manually control igniting and flame-out, this igniting, flame-out operation make things convenient for inadequately, and when needs frequently moved apart kitchen range with pot, if constantly light a fire, stop working, regulate firepower, then operation was very inconvenient, and waste fuel if be not related to fire, for this reason, people have invented when pot frame point firepower size when keeping flame-out of fighting automatically during at kitchen range, and when pot moving apart kitchen range the automatically-controlled ignition device of auto extinguishing.As " gas range pressure, ignition " (patent No. is 87208978.9), this technology is to drive the break-make of a noticeable degree gas inlet pipe and drive that the firing circuit switch motion is lighted a fire or flame-out by a lever rocking arm.In use there is following deficiency in this structure: the one, and the size that the needle-valve of control gas inlet pipe is opened is the stroke decision according to the swing of lever rocking arm, when the pot frame of different structure on kitchen range the time, will cause needle-valve to open the difference of size because of the difference of the bottom of a pan structure, the not enough or problem that can't open needle-valve of air feed can take place in the structure of some pot; The 2nd, the time that needle-valve is opened can produce the deviation with the duration of ignition because of the structure of pot body is different, if the time that needle-valve is opened too much early than the duration of ignition, can cause to fire; The 3rd, the cooking stove of this structure flame when using is put out or watered when accident extinguishing such as putting out can't cut off gas supply automatically.Therefore, its adaptability and security to pan structure is not ideal.

Summary of the invention

The purpose of this utility model provides good, the safe in utilization automatically-controlled ignition gas-cooker of a kind of adaptability to pan structure.

The purpose of this utility model is achieved in that it includes stove, combustion head, pot frame and Gas Pipe, is equipped with magnetic valve on the described Gas Pipe; Be equipped with one on the described stove and transmit the conductive bar of the activity of pot body pressure, in the activity space of this conductive bar, be provided with the movable part of a contactor, the electric contact of described contactor is connected in IGNITION CONTROL and the solenoid valve control circuit, and the output of solenoid valve control circuit is connected with the coil of described magnetic valve.

The upper end of above-mentioned conductive bar can be connected with described pot frame, and this conductive bar also can be contained in the passage at described combustion head middle part, and the top of conductive bar is higher than the end face of described combustion head; Flame-out probe preferably is equipped with in the top of above-mentioned combustion head, and this flame-out probe is connected in the described solenoid valve control circuit.

Owing to adopted such scheme, the utility model compared with prior art has following beneficial technical effects:

1, adopts the action of conductive bar control circuit switch, and the drive ignition circuit and be contained in the control circuit of magnetic valve on the fuel gas pipeline simultaneously of the action by contactor, this frame mode can so that the igniting and open blast tube and carry out simultaneously, can not fire.

2, conductive bar is connected with the pot frame or is contained in the combustion head centre and passes through the scheme of solenoid control blast tube, the structure that can adapt to overwhelming majority pot body, as long as pot body frame is on the pot frame, or the bottom of a pan is not that too high the unobstructed of gas channels that can guarantee finished reliably with lighting a fire from burning head term face.

3, by the solenoid control blast tube flame-out probe in detecting flame status can be set easily also,, avoid accident extinguishing to lead to a disaster once fray-out of flame can be controlled the cut-out gas supply.

Description of drawings

Fig. 1 is the frame for movement cutaway view of the utility model embodiment one.

Fig. 2 is the partial enlarged view of Fig. 1.

Fig. 3 is the circuit theory diagrams of the utility model embodiment one.

Fig. 4 is the installation site schematic diagram of conductive bar among the utility model embodiment two.

The specific embodiment

Fig. 1, shown in Figure 2, stove of the present utility model includes the thermal insulation board 1 that circuit part and combustion head 4 is isolated and is used to install the support 2 of conductive bar 14 and back-moving spring 15, be provided with the lever arm 13 of contactor 12 in the stroke space of conductive bar 14, the electric contact of contactor 12 is connected in the circuit of controller 11 of IGNITION CONTROL and solenoid control unification; Pot frame 3 is connected with the upper end of conductive bar 14, and igniting spray point 6 and flame-out probe 7 are equipped with in the top of combustion head 14, and flame-out probe 7 is connected in the circuit of controller 11, and the high-voltage output line of controller 11 is connected with igniting spray point 6; Magnetic valve 10 is housed in the passage of Gas Pipe 9, and the output of controller 11 is connected with the coil of magnetic valve 10.

The utility model in use, rotation firepower switch 8 can be regulated the firepower size, as long as pot body frame is on pot frame 3 time, the elastic force that pot frame 3 just can rely on pot body pressure drive conductive bar 14 to overcome back-moving spring 15 moves down, the lever arm 13 of contactor 12 is touched in the lower end of conductive bar 14, the electric contact action of contactor 12, controller 11 is connected the power supply opening magnetic valve of magnetic valve 10 on the one hand, and output HIGH voltage is to spray point 6 discharge ignitings of lighting a fire on the other hand; When flame-out probe 7 detected the fray-out of flame of combustion head 4, controller 11 cut off the electric current of magnetic valve 10 coils, thus the passage that cuts off Gas Pipe 9; When the pot body from pot frame 3 rising time-outs, the elastic force of back-moving spring 15 drives conductive bar 14 and rises with pot frame 3, the lever arm 13 of the lower end shake-up contactor 12 of conductive bar 14 resets and upsprings, the action of the electric contact of contactor 12 makes controller 11 cut off the electric current of magnetic valves 10 coils, thereby cuts off the passage of Gas Pipe 9 and stop working.

Shown in Figure 3, the electric contact S1 of contactor is connected in the circuit of the controller of being made up of resistance R 1-R23, capacitor C 1-C8, diode D1-D8, triode T1-T7, four voltage comparator integrated circuit LM399, electromagnetic valve coil L1, L2, controllable silicon SCR LED and transformer B1-B2, the circuit of controller is identical with the ignition controller circuit of existing water control water heater, contact P1 is a high-voltage output terminal, contact fire spray point, contact P2 connects flame-out probe for flame-out signal detection end.

During work, when the pot body moved apart pot frame, 1 pin of electric contact S1 and 3 pin were connected, and power supply VCC is to capacitor C 7 chargings, the just very high potential of capacitor C 7; When pot body frame is on the pot frame, electric contact S1 action, its 1 pin and 2 pin are connected, when capacitor C 1 charging makes the 6 pin current potentials of voltage comparator ic B be higher than 7 pin current potentials, the upset of 1 pin of voltage comparator ic B is electronegative potential, and the current potential of 5 pin of voltage comparator ic A transfers to and is lower than 4 pin current potentials, at this moment, 2 pin of voltage comparator ic A also overturn to electronegative potential makes triode T1 conducting, adhesive electric, magnetic valve that pull-in winding L2 gets; Meanwhile, the capacitor C 7 that is full of electricity makes triode T6, T7 conducting, make the pulse firing circuit of forming by resistance R 8-R11, capacitor C 3, diode D4-D6, triode T2, controllable silicon SCR, LED and transformer B1-B2 connect power supply, and export high pressure to the spray point discharge igniting of lighting a fire from the P1 contact.After flame ignition, the current potential of the contact P2 that joins with flame-out probe reduces, and makes the 8 pin current potentials of voltage comparator ic C be lower than 9 pin, and the 14 pin current potentials of voltage comparator ic C raise, triode T3, T4, T5 conducting.On the one hand, the power supply of keeping coil L1 is connected in the conducting of triode T3, keeps the adhesive of magnetic valve; On the other hand, triode T5 conducting makes capacitor C 7 quicken discharge from resistance R 21 paths, ends until triode T6, T7, and the power supply of interruption pulse firing circuit stops discharge igniting.After flame ignition, capacitor C 2 makes voltage comparator ic A overturn because of 5 pin current potentials are higher than 4 pin current potentials through overcharging, triode T1 by and cut off big electric current supply access to pull-in winding L2.When stopping working when meeting accident, the current potential of the contact P2 that joins with flame-out probe 7 raises, make the 8 pin current potentials of voltage comparator ic C be higher than 9 pin, 14 pin upset the becoming electronegative potential of voltage comparator ic C, triode T3, T4 are ended, coil L1 power supply is kept in cut-out, magnetic valve is discharged and cuts off gas supply, prevents gas leakage and intoxication accident takes place.

Shown in Figure 4, conductive bar 17 is contained in the passage at combustion head 16 middle parts, and the top of conductive bar 17 is higher than 35 millimeters of the end faces of combustion head 17, therefore, as long as the bottom of a pan frame is on the pot frame time, the end face of its bottom center and combustion head 17 all can make this kitchen range work safely and reliably less than 35 millimeters.

Claims

1, a kind of automatically-controlled ignition gas-cooker, it includes stove, combustion head, pot frame and Gas Pipe, it is characterized in that: on the described Gas Pipe magnetic valve is housed; Movable conductive bar is housed on the described stove, in the activity space of this conductive bar, be provided with the movable part of a contactor, the electric contact of described contactor is connected in IGNITION CONTROL and the solenoid valve control circuit, and the output of solenoid valve control circuit is connected with the coil of described magnetic valve.

2, automatically-controlled ignition gas-cooker according to claim 1 is characterized in that: the upper end of described conductive bar is connected with described pot frame.

3, automatically-controlled ignition gas-cooker according to claim 1 is characterized in that: described conductive bar is contained in the passage at described combustion head middle part, and the top of this conductive bar is higher than the end face of described combustion head.

4, according to claim 1,2 or 3 described automatically-controlled ignition gas-cookers, it is characterized in that: flame-out probe is equipped with in the top of described combustion head, and this flame-out probe is connected in the described solenoid valve control circuit.