CN205191640U

CN205191640U - Novel ignition mechanism

Info

Publication number: CN205191640U
Application number: CN201520966061.3U
Authority: CN
Inventors: 袁建儿
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2016-04-27
Anticipated expiration: 2025-11-27

Abstract

The utility model discloses a novel ignition mechanism, power supply circuit has set gradually, switch circuit, power switching over and delay circuit, oscillation circuit and high -pressure discharge mechanism, power supply circuit includes PNP type triode T1, T2, NPN type triode T3, diode D1 and stabilivolt D2, T1 and T2 projecting pole connect the power supply circuit input jointly, the T1 collecting electrode is through resistance R1 ground connection, the T1 base is passed through R3 and is connected with the T3 collecting electrode, the T2 base is connected with the T1 projecting pole, meet D1 between T2 collecting electrode and the ground, and the T2 collecting electrode connects power supply circuit forward transportation output through inductance L1, set up establish ties the in proper order first branch road and by R5 by R4 and D2 between power supply circuit forward transportation output and the ground, potentiometre rw and the R6 second branch road of establishing ties in proper order, the T3 projecting pole connects between R4 and D2 node, the T3 base is connected with the rw movable contact, connect between T1 base and T1 projecting pole after C1 and the series connection, electric capacity C2 connects between power supply circuit forward transportation output and ground. The utility model discloses can provide stable ignition voltage, the ignition success rate is high.

Description

A kind of novel ignition mechanism

Technical field

The utility model relates to electronic circuit, particularly relates to a kind of circuit structure of ignition mechanism.

Background technology

At present, electrotechnical porcelain product many employings gas burning kiln is fired.This gas burning kiln adopts pulse firing mechanism to light a fire usually, and the voltage of its power supply is stable not, easily causes loss of ignition.In addition, ignition mechanism easily adsorbs more putty, causes ignition success rate to reduce thus.In view of this, be necessary to be optimized the circuit structure of existing ignition mechanism.

Utility model content

For the defect that prior art exists, the purpose of this utility model is to provide a kind of novel ignition mechanism, to improve ignition success rate.

For solving above technical problem, the utility model provides a kind of novel ignition mechanism, comprise power circuit successively, on-off circuit, Power convert and delay circuit, oscillating circuit and electrion mechanism, this power circuit is on-off circuit, Power convert and delay circuit, oscillating circuit and electrion mechanism provide DC voltage, the charge/discharge of this on-off circuit control point firing mechanism, this Power convert and delay circuit make this oscillating circuit and electrion mechanism obtain power supply and keep the scheduled time, this oscillating circuit and electrion mechanism produce high pressure pulse discharge igniting, power circuit comprises PNP type triode T1, PNP type triode T2, NPN type triode T3, diode D1 and voltage-stabiliser tube D2, the emitter stage of PNP type triode T1 and the emitter stage of PNP type triode T2 connect power circuit input jointly, the colelctor electrode of PNP type triode T1 is through resistance R1 ground connection, the base stage of PNP type triode T1 is connected with the colelctor electrode of NPN type triode T3 by resistance R3, the base stage of PNP type triode T2 is connected with the emitter stage of PNP type triode T1, the colelctor electrode of PNP type triode T2 and the indirect diode D1 on ground, and the colelctor electrode of PNP type triode T2 connects power circuit positive output end through inductance L 1, power circuit positive output end with between first branch road of being connected successively by resistance R4 and voltage-stabiliser tube D2 is set and by resistance R5, the second branch road that potentiometer Rw and resistance R6 connects successively, the emitter stage of NPN type triode T3 is connected between the node of resistance R4 and voltage-stabiliser tube D2, the base stage of NPN type triode T3 is connected with the movable contact of potentiometer Rw, be connected between the base stage of PNP type triode T1 and the emitter stage of PNP type triode T1 after resistance C1 and resistant series, electric capacity C2 is connected between power circuit positive output end and ground.

Compared with prior art, low-voltage DC is produced high voltage pulse by oscillating circuit by the utility model ignition mechanism, sparked by the high pressure cusp of spark plug and form spark and complete electronic ignition process, wherein the power circuit of ignition mechanism can provide stable supply voltage, is thus conducive to improving igniting reliability.This ignition mechanism operates comparatively simple, and ignition success rate improves greatly, improves Consumer's Experience preferably thus.

Accompanying drawing explanation

By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred embodiment, and is not thought restriction of the present utility model.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:

Fig. 1 is the schematic diagram of ignition mechanism in the utility model embodiment;

Fig. 2 is the circuit diagram of power circuit in Fig. 1.

Detailed description of the invention

Set forth a lot of detail in the following description so that fully understand the utility model.But the utility model can be much different from alternate manner described here to implement, those skilled in the art can when doing similar popularization without prejudice to when the utility model intension, and therefore the utility model is by the restriction of following public specific embodiment.

See Fig. 1, be the circuit theory diagrams of ignition mechanism in the utility model embodiment.Ignition mechanism in this embodiment comprises power circuit 100, on-off circuit 200, Power convert and delay circuit 300, oscillating circuit and electrion mechanism 400, the circuit of various piece form and operation principle as follows.

Power circuit 100 is on-off circuit 200, Power convert and delay circuit 300, oscillating circuit and electrion mechanism 400 provide operating voltage.In the present embodiment, power circuit 100 preferably adopts power circuit, can provide stable supply voltage thus, is conducive to improving igniting reliability.

On-off circuit 200, be made up of single-pole double throw microswitch K-1 and K-2, electrochemical capacitor C-1 and C-2, the negative pole of electrochemical capacitor C-1 is connected with the common port of single-pole double throw microswitch K-1, the negative pole of electrochemical capacitor C-2 is connected with the common port of single-pole double throw microswitch K-2, the positive pole of electrochemical capacitor C-1 and the plus earth GND of electrochemical capacitor C-2, the normally-closed contact of single-pole double throw microswitch K-1 and the normally-closed contact of single-pole double throw microswitch K-2 meet the positive output end Vo of power circuit 100, the negative output terminal ground connection GND of power circuit 100.

Power convert and delay circuit 300, be made up of P-channel field-effect transistor (PEFT) pipe T-1 and resistance R-1, R-2, one end of P-channel field-effect transistor (PEFT) pipe T-1 grid connecting resistance R-1 and one end of resistance R-2, the normally opened contact of the other end order dpdt double-pole double-throw (DPDT) microswitch K-1 of resistance R-1, the normally opened contact of the other end order dpdt double-pole double-throw (DPDT) microswitch K-2 of resistance R-2, the source electrode of P-channel field-effect transistor (PEFT) pipe T-1 meets the positive output end Vo of power circuit 100, and the drain electrode of P-channel field-effect transistor (PEFT) pipe T-1 connects the Same Name of Ends of oscillation transformer B primary coil L-1.

Oscillating circuit and electrion mechanism 400, by PNP transistor T-2, oscillation transformer B, resistance R-3 and electrion end composition, one end of the base stage connecting resistance R-3 of PNP transistor T-2, another termination oscillation transformer B primary coil L-1 different name end of resistance R-3, the drain electrode of the termination P-channel field-effect transistor (PEFT) pipe T-1 of the same name of oscillation transformer B primary coil L-2, the colelctor electrode of PNP transistor T-2 connects the other end of oscillation transformer B primary coil L-2, the grounded emitter GND of PNP transistor T-2, one end of oscillation transformer B secondary coil (step-up coil) L-3 meets spark plug (sparkplugs, the high voltage pulse discharge of electricity sent here, air between disruptive spark plug two electrode, produce electric spark with this combustion gas of igniting, concrete type selecting is determined according to product needed, this do not launch illustrate) metal shell, the other end of oscillation transformer B secondary coil L-3 meets the electrion end Vg of spark plug.

When on-off circuit 200 is in closed condition, electrochemical capacitor C-1 or C-2 is charged.While opening burnt gas switch knob, be switched on the normally opened contact in single-pole double throw microswitch K-1 or K-2 (on-off circuit) of burnt gas switch knob linkage, electrochemical capacitor C-1 or C-2 makes the grid of P-channel field-effect transistor (PEFT) pipe T-1 become high level by microswitch K-1 or K-2, the conducting of P-channel field-effect transistor (PEFT) pipe T-1 makes oscillating circuit obtain power supply, the secondary coil voltage boosting pulse high pressure (as 4000V) of oscillation transformer B, make the plug ignition work several seconds of electrion mechanism, when electrochemical capacitor C-1 or C-2 discharge off, P-channel field-effect transistor (PEFT) pipe T-1 proceeds to cut-off, ignition process completes.When closing burnt gas switch, again receiving the negative pole of electrochemical capacitor C-1 or C-2 with single-pole double throw microswitch K-1 or K-2 of its interlock, is the charging of electrochemical capacitor C-1 or C-2 again.

Circuit shown in Fig. 1 adopts oscillating circuit to produce high voltage pulse, utilizes electrion to light combustion gas.This ignition mechanism solves piezo-electric ignition mode Problems existing, and stopped problems such as using the igniting of match, lighter inconvenient and dangerous, easy to use, security is high.

In ignition mechanism shown in Fig. 1, power circuit 100 specifically can adopt multiple circuit structure, is below a preferred embodiment.

See Fig. 2, it is the circuit diagram of the power circuit in the utility model embodiment.This power circuit is that Type of Switch Stabilivolt Source Circuit (hereinafter referred to as power circuit) comprises PNP type triode T1, PNP type triode T2 (multiple tube be made up of two triodes), NPN type triode T3, diode D1 and voltage-stabiliser tube D2, concrete circuit structure is: the emitter stage of PNP type triode T1 and the emitter stage of PNP type triode T2 connect electric switch power circuit input Ui (as 18V) jointly, the colelctor electrode of PNP type triode T1 is through resistance R1 ground connection, the base stage of PNP type triode T1 is connected with the colelctor electrode of NPN type triode T3 by resistance R3, the base stage of PNP type triode T2 is connected with the emitter stage of PNP type triode T1, the colelctor electrode of PNP type triode T2 and the indirect diode D1 on ground, and the colelctor electrode of PNP type triode T2 meets switching power circuit positive output end Uo through inductance L 1, switching power circuit positive output end with between first branch road of being connected successively by resistance R4 and voltage-stabiliser tube D2 is set and by resistance R5, the second branch road that potentiometer Rw and resistance R6 connects successively, the emitter stage of NPN type triode T3 is connected between the node of resistance R4 and voltage-stabiliser tube D2, the base stage of NPN type triode T3 is connected with the movable contact of potentiometer Rw, resistance C1 and resistance R2 is connected between the base stage of PNP type triode T1 and the emitter stage of PNP type triode T1 after connecting, electric capacity C2 is connected between switching power circuit positive output end and ground.

In this switching power circuit, when the base stage of PNP type triode T2 inputs negative pulse, it is for saturation conduction state, its current collection very 18V, diode D1 is in reverse-biased and ends, the linear rising of electric current of inductance L 1, charges to electric capacity C2, power to the load, now inductance L 1 also stores certain energy simultaneously.End when the base stage input positive pulse of PNP type triode T2, the electric current in inductance L 1 can not suddenly change, and will induce left negative right positive voltage.The negative terminal of this induced voltage is added to diode D1, makes diode D1 conducting, and such inductance L 1, electric capacity C2 and diode D1 form conducting loop, and inductance L 1 starts to release energy, and its electric current linearly declines.

When switching power circuit is connected, resistance R1 can regard the biasing resistor of PNP type triode T2 as, input voltage makes PNP type triode T2 conducting through resistance R1, the lifting of PNP type triode T1 base potential is made by resistance R2 electric capacity C1, PNP type triode T1 collector potential declines, cause the base potential of PNP type triode T2 to decline further, impel PNP type triode T2 conducting more.This positive feedback process will make PNP type triode T2 enter saturation conduction very soon, and PNP type triode T1 ends.PNP type triode T1 cut-off as in the previous, PNP type triode T2 conducting, then now electric capacity C1 is filled with voltage, now electric capacity C1 discharges, and discharge loop is that the ON time of resistance-C2-L1, PNP type triode T2 between C1-R2--R3-T3c-e depends on electric capacity C1 discharge time.Discharge into a certain degree, PNP type triode T1 conducting and be in magnifying state, and PNP type triode T2 is in cut-off state.After this electric capacity C1 charges, and input voltage is by the emitter junction-C1-R2-L1-C2 of T1, and the charging interval depends on the deadline with PNP type triode T2.As can be seen here, control and the conducting of PNP type triode T2 and deadline, just can reach and control output voltage, the stable object exporting output characteristic curve.

Above embodiment is improved from many aspects ignition mechanism, and its beneficial effect is comparatively outstanding, and properties of product are improved.Above-mentioned corrective measure implements comparatively convenient, obviously can not increase cost, thus has good market prospects.

Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can make possible variation and amendment, the scope that therefore protection domain of the present utility model should define with the utility model claim is as the criterion.

Claims

1. a novel ignition mechanism, comprise power circuit successively, on-off circuit, Power convert and delay circuit, oscillating circuit and electrion mechanism, this power circuit is on-off circuit, Power convert and delay circuit, oscillating circuit and electrion mechanism provide DC voltage, the charge/discharge of this on-off circuit control point firing mechanism, this Power convert and delay circuit make this oscillating circuit and electrion mechanism obtain power supply and keep the scheduled time, this oscillating circuit and electrion mechanism produce high pressure pulse discharge igniting, it is characterized in that, power circuit comprises PNP type triode T1, PNP type triode T2, NPN type triode T3, diode D1 and voltage-stabiliser tube D2, the emitter stage of PNP type triode T1 and the emitter stage of PNP type triode T2 connect power circuit input jointly, the colelctor electrode of PNP type triode T1 is through resistance R1 ground connection, the base stage of PNP type triode T1 is connected with the colelctor electrode of NPN type triode T3 by resistance R3, the base stage of PNP type triode T2 is connected with the emitter stage of PNP type triode T1, the colelctor electrode of PNP type triode T2 and the indirect diode D1 on ground, and the colelctor electrode of PNP type triode T2 connects power circuit positive output end through inductance L 1, power circuit positive output end with between first branch road of being connected successively by resistance R4 and voltage-stabiliser tube D2 is set and by resistance R5, the second branch road that potentiometer Rw and resistance R6 connects successively, the emitter stage of NPN type triode T3 is connected between the node of resistance R4 and voltage-stabiliser tube D2, the base stage of NPN type triode T3 is connected with the movable contact of potentiometer Rw, be connected between the base stage of PNP type triode T1 and the emitter stage of PNP type triode T1 after resistance C1 and resistant series, electric capacity C2 is connected between power circuit positive output end and ground.