CN102506445A

CN102506445A - Continuous electronic ignition device for cooking utensils

Info

Publication number: CN102506445A
Application number: CN2012100026093A
Authority: CN
Inventors: 刘德军; 黄勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-05
Filing date: 2012-01-05
Publication date: 2012-06-20

Abstract

The invention relates to a continuous electronic ignition device for cooking utensils. The ignition device comprises a 3V direct-current power supply, a linkage ignition switch, a power supply conversion and delay circuit, an oscillating circuit and a high-voltage discharging head. According to the continuous electronic ignition device for cooking utensils, 3V direct-current power supply generates high-voltage pulses by the oscillating circuit, and a high-voltage tip discharges momentarily to form sparks, so that the electronic ignition process is finished. The continuous electronic ignition device only uses two common cells to well solve the common faults existing in a piezoelectric ignition manner. The continuous electronic ignition device has good effects when not only used in home, but also in the kitchens of hotels and guest houses. The operating method and the operating experiences do not vary from person to person, the ignition time of continuous high-voltage pulses is automatically controlled by a circuit, and thus the conduction time of the ignition device does not needed to be manually controlled.

Description

The continuous electronic ignition device of kitchen range

Technical field

The invention belongs to the application of electronic technology field, relate to the continuous electronic ignition device of a kind of kitchen range.

Background technology

Common liquefied gas, the most sampling of the igniter of gas kitchen ranges piezoelectricity mode are lighted a fire, and piezoelectrics have advantages such as assembly structure is simple, cost of manufacture is low.But piezoelectrics are when brand-new state; General igniting effect is fine, in case the piezoelectrics use is of a specified duration, its result of use of the more back of putty absorption will be had a greatly reduced quality; Sometimes need repeatedly sparking just can light combustion gas, it is especially outstanding that the elderly's use runs into this problem; Besides, piezoelectrics and user's operation skill, action speed are relative, and exist the phenomenon that varies with each individual in the use.The continuous electronic ignition device of kitchen range of the present invention is that the 3V direct current is produced high-voltage pulse through oscillating circuit, and sparking through high tag forms spark and accomplish the electronic ignition process.The present invention only uses 2 joint common batteries, can well solve the common fault that the piezo-electric ignition mode exists.No matter the continuous electronic ignition device of kitchen range of the present invention is to use in family, still in the hotel, the hotel uses in the kitchen, electronic ignition device all shows effect preferably continuously.There are not the phenomenon that varies with each individual in method of operating and operating experience, and are controlled automatically by circuit the duration of ignition of high-voltage pulse continuously, do not need artificially to control the conduction time of igniter.

Below specify the continuous electronic ignition device of kitchen range of the present invention related correlation technique content in implementation process.

Summary of the invention

Goal of the invention and beneficial effect: the continuous electronic ignition device of kitchen range of the present invention is that the 3V direct current is produced high-voltage pulse through oscillating circuit, and sparking through high tag forms spark and accomplish the electronic ignition process.The present invention only uses 2 joint common batteries, can well solve the piezo-electric ignition mode and have common fault.No matter the continuous electronic ignition device of kitchen range of the present invention is to use in family, still in the kitchen in hotel, hotel, uses, and electronic ignition device all shows effect preferably continuously.There are not the phenomenon that varies with each individual in method of operating and operating experience, and are controlled automatically by circuit the duration of ignition of high-voltage pulse continuously, do not need artificially to control the conduction time of igniter.

Technical scheme: the continuous electronic ignition device of kitchen range, form by 3V dc source, interlock ignition switch circuit, power supply conversion and delay circuit, oscillating circuit and electrion head, it is characterized in that:

Interlock ignition switch circuit: form by single-pole double throw microswitch K1 and K2, electrochemical capacitor C1 and C2; The positive pole of electrochemical capacitor C1 links to each other with the common port of single-pole double throw microswitch K1; The positive pole of electrochemical capacitor C2 links to each other with the common port of single-pole double throw microswitch K2; The normally-closed contact of the normally-closed contact of single-pole double throw microswitch K1 and single-pole double throw microswitch K2 meets the anodal VCC of 3V dc source, the negative pole connection circuit ground GND of the negative pole of electrochemical capacitor C1 and electrochemical capacitor C2;

Power supply conversion and delay circuit: form by N channel field-effect pipe VT1 and resistance R 1, resistance R 2; The end of N channel field-effect pipe VT1 grid connecting resistance R1 and an end of resistance R 2; The normally opened contact of the other end order dpdt double-pole double-throw (DPDT) microswitch K1 of resistance R 1; The normally opened contact of the other end order dpdt double-pole double-throw (DPDT) microswitch K2 of resistance R 2, the source electrode of N channel field-effect pipe VT1 meets the anodal VCC of 3V dc source, and the drain electrode of N channel field-effect pipe VT1 connects the end of the same name of oscillation transformer T primary coil L1;

Oscillating circuit and electrion head: form by NPN transistor VT2, oscillation transformer T, resistance R 3 and electrion head; The end of the base stage connecting resistance R3 of NPN transistor VT2; Another termination oscillation transformer T primary coil L1 non-same polarity of resistance R 3; The drain electrode of the termination N channel field-effect pipe VT1 of the same name of oscillation transformer T primary coil L2, the colelctor electrode of NPN transistor VT2 connects the other end of oscillation transformer T primary coil L2, the emitter stage connection circuit ground GND of NPN transistor VT2; The continuous electronic ignition device of termination kitchen range of oscillation transformer T step-up coil L3, another termination electrion head of oscillation transformer T step-up coil L3.

The operation principle of circuit: the continuous electronic ignition device of kitchen range adopts oscillating circuit to produce high-voltage pulse, utilizes electrion to light combustion gas.If when burnt gas switch K1 or K2 were in closed condition, electrochemical capacitor C1 or C2 were recharged, when opening the burnt gas switch knob; Be switched on the single-pole double throw microswitch K1 of burnt gas switch knob interlock or the normally opened contact among the K2 (interlock ignition switch); Electrochemical capacitor C1 or C2 make the grid of N channel field-effect pipe VT1 become high level through microswitch K1 or K2, and the conducting of N channel field-effect pipe VT1 makes oscillating circuit obtain working power, the secondary coil of oscillation transformer T about 4000V high-voltage pulse that boosts; Make electrion head ignition operation 2～3 seconds; When electrochemical capacitor C1 or C2 discharge off, N channel field-effect pipe VT1 changes over to and ends, and ignition process is accomplished.Select suitable electrochemical capacitor C1 or C2, resistance R 1 or R2, N channel field-effect pipe VT1 ON time was kept 2～3 seconds, lighted at continuous high pressure pulse discharge to guarantee combustion gas.Where no matter single-pole single-throw(SPST microswitch K1 or K2 are in, and after igniting finished, oscillating circuit all was in the state of stopping power supply.When closing burnt gas switch,, be the charging of electrochemical capacitor C1 or electrochemical capacitor C2 once more with the positive pole that the single-pole single-throw(SPST microswitch K1 or the K2 of its interlock receives electrochemical capacitor C1 or electrochemical capacitor C2 again.

Description of drawings

Accompanying drawing 1 is the embodiment circuit working schematic diagram that the present invention provides a continuous electronic ignition device of kitchen range; The negative pole of 3V dc source is connected with the metal shell of circuit ground GND, kitchen range.

The specific embodiment

According to circuit working schematic diagram and the description of drawings shown in the accompanying drawing 1, and according in the described each several part circuit of summary of the invention between the components and parts annexation and components and parts technical parameter implement to realize the present invention.

The selection of components and parts and technical parameter thereof

VT1 is the high-power effect pipe of N ditch place where Taoist rites are performed, and FET is the power component in the circuit, requires to insert the very little N channel field-effect of loss pipe, and model is recommended IRFZ22, the TO-220 encapsulation, or select IRFZ30 for use;

VT2 is a power transistor in the NPN type, and model recommends 2SC9013 to be encapsulated as TO-92;

The resistance of resistance R 1, resistance R 2 is 270～430K Ω, power >=1/4W; The resistance of resistance R 3 is 1.2～2K Ω, and power is 1/4W;

The capacity of electrochemical capacitor C1, C2 is 68～100 μ F/10V.

Circuit production and debugging

The making of oscillation transformer T: FERRITE CORE is selected model EI35 for use, and lingual surface size 8.5mm * 8.5mm, primary coil L1, L2 select ￠ 0.20mm enamel-covered wire for use, and the sub-thread layering is flat around 30 circles, 40 circles on the magnetic core skeleton; Secondary coil L3 is flat around 500～550 circles with the layering of sub-thread Φ 0.08mm enamel-covered wire; The oscillation transformer coiling is tied up with electrician's adhesive waterproof tape after accomplishing, and soaks the envelope protection against the tide with 504 epoxy glues or with A, B glue again;

The decision of the size of the capacity of electrochemical capacitor C1 or C2 and resistance R 1 or R2 resistance is the time of igniting continuously, just controls the conducting retention time of N channel field-effect pipe VT1, and general continuous reaches 2～3 seconds and get final product the duration of ignition;

If oscillating circuit can not starting of oscillation, showing as oscillation transformer T step-up coil L3 does not have high pressure output, then as long as the two ends of oscillation transformer T primary coil L1 or the two ends of primary coil L2 are exchanged;

The resistance size of resistance R 3 has determined the operating current of boost oscillator circuit in the oscillating circuit, is the operating current of NPN transistor VT2.The adjustment principle is: when guaranteeing that battery electric quantity reduces, ignitor circuit still can normal operation under, resistance R 3 values should be tried one's best greatly so that reduce the operating current of oscillating circuit, the service life of prolongation battery.

Claims

1. the continuous electronic ignition device of kitchen range is made up of 3V dc source, interlock ignition switch, power supply conversion and delay circuit, oscillating circuit and electrion head, it is characterized in that:

The interlock ignition switch is made up of single-pole double throw microswitch K1 and K2, electrochemical capacitor C1 and electrochemical capacitor C2; The positive pole of electrochemical capacitor C1 links to each other with the common port of single-pole double throw microswitch K1; The positive pole of electrochemical capacitor C2 links to each other with the common port of single-pole double throw microswitch K2, and the normally-closed contact of the normally-closed contact of single-pole double throw microswitch K1 and single-pole double throw microswitch K2 meets the negative pole VCC of 3V dc source;

Power supply conversion and delay circuit are made up of N channel field-effect pipe VT1 and resistance R 1, R2; The end of N channel field-effect pipe VT1 grid connecting resistance R1 and an end of resistance R 2; The normally opened contact of the other end order dpdt double-pole double-throw (DPDT) microswitch K1 of resistance R 1; The normally opened contact of the other end order dpdt double-pole double-throw (DPDT) microswitch K2 of resistance R 2, the source electrode of N channel field-effect pipe VT1 meets the negative pole VCC of 3V dc source, and the drain electrode of N channel field-effect pipe VT1 connects the end of the same name of oscillation transformer T primary coil L1;

Oscillating circuit and electrion head are made up of NPN transistor VT2, oscillation transformer T, resistance R 3 and electrion end; The end of the base stage connecting resistance R3 of NPN transistor VT2; Another termination oscillation transformer T primary coil L1 non-same polarity of resistance R 3; The drain electrode of the termination N channel field-effect pipe VT1 of the same name of oscillation transformer T primary coil L2, the colelctor electrode of NPN transistor VT2 connects the other end of oscillation transformer T primary coil L2, the emitter stage connection circuit ground GND of NPN transistor VT2; The metal shell of the termination kitchen range of oscillation transformer T step-up coil L3, another termination electrion head of oscillation transformer T step-up coil L3.