CN202973210U

CN202973210U - Impulse ignition controller for gas stoves

Info

Publication number: CN202973210U
Application number: CN 201320002409
Authority: CN
Inventors: 周洪强; 胡叶民
Original assignee: Lishui University
Current assignee: Lishui University
Priority date: 2013-01-05
Filing date: 2013-01-05
Publication date: 2013-06-05
Anticipated expiration: 2023-01-05

Abstract

The utility model discloses an impulse ignition controller for gas stoves. The impulse ignition controller comprises a single chip microcomputer, wherein the single chip microcomputer is connected with a clock oscillation circuit, a flame detection circuit, a solenoid valve control circuit, a buzzer circuit and an impulse ignition control device. The impulse ignition controller disclosed by the utility model is reasonable in structural design; and a PIC16C711 single chip microcomputer produced by the Microchip Company is taken as a master controller, and therefore the intellegent ignition and the sensorless design of flame detection are realized, and the energy consumption is minimized.

Description

A kind of gas-cooker pulse igniting controller

Technical field

The utility model relates to a kind of controller for gas, especially a kind of gas-cooker pulse igniting controller.

Background technology

At present China has every household more than 1000 to use gas kitchen ranges manufacturing enterprise, and the product annual production is about 3,000 ten thousand left and right.Wherein larger, product quality and managerial skills preferably enterprise only have 100 left and right, all the other major parts are simple packaging enterprises, the product quality of these enterprises and technology are generally lower, change the enforcement of (sending out) card system with gas kitchen ranges production licensing along with country, the enterprise that surpasses 600 will be forced to clean out.How to reduce costs, and it is more stable to produce performance, the gas-cooker of more saving the energy is the key that each gas-cooker manufacturer wins victory, and pulse igniting controller is part most crucial in gas-cooker.

The utility model content

The utility model will solve the shortcoming of above-mentioned prior art, and a kind of gas-cooker pulse igniting controller is provided, and reasonable in design is more energy-conservation.

The utility model solves the technical scheme that its technical problem adopts: this gas-cooker pulse igniting controller, comprise single-chip microcomputer, and single-chip microcomputer connects clock oscillation circuit, flame detection circuit, solenoid valve control circuit, buzz circuit and pulse firing control device.this control system has increased the pulse firing control circuit than common gas-cooker, solenoid control, the devices such as flame detecting pin, namely when work, first export control signal by single-chip microcomputer and trigger ignition control circuit, flame detects feedback circuit, detecting feedback circuit by flame detects flame, the result feedback that detects is to single-chip microcomputer, single-chip microcomputer is controlled opening of magnetic valve according to the flame detection signal of input, close action, thereby guaranteed the control system of gas-cooker when meeting accident flame-out and Annealed Strip shut electromagnetic valve timely, block fuel gas path, avoided the security incident that causes when flame-out, reached the purpose of protection.

Described single-chip microcomputer is the PIC16C711 single-chip microcomputer.The PIC16C711 single-chip microcomputer is 8 single-chip microcomputers of a kind of CMOS technique of releasing of Microchip company, has high-performance RISC structure C PU, 8 grades of hardware stacks, 13 two-way I/O mouths, 4 tunnel 8 A/D; I/O drives Absorption Current can reach 25mA, also has watchdog circuit, at instrument, control field, advantageous condition is arranged, easy to operate due to its instruction simple (only 35), has been favourably welcome since coming out.In pulse igniter design, the various functions such as button inquiry, the flame that PIC16C711 is responsible for the user as main controller detects, being open to the custom of magnetic valve, IGNITION CONTROL.

The effect that the utility model is useful is: the utility model reasonable in design, wherein single-chip microcomputer uses PIC16C711 single-chip microcomputer that Microchip company produces as main controller, realized that the intellectuality of igniting and flame detects without Sensor Design, the consumption with the energy simultaneously drops to minimum.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is ignition procedure flow chart of the present utility model;

Fig. 3 is pulse firing control circuit figure of the present utility model;

Fig. 4 is flame detection circuit figure of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

With reference to accompanying drawing: this gas-cooker pulse igniting controller, comprise single-chip microcomputer, single-chip microcomputer connects clock oscillation circuit, flame detection circuit, solenoid valve control circuit, buzz circuit and pulse firing control device.Described single-chip microcomputer is the PIC16C711 single-chip microcomputer.

Wherein the PIC16C711 single-chip microcomputer is 8 single-chip microcomputers of a kind of CMOS technique of releasing of Microchip company, has high-performance RISC structure C PU, 8 grades of hardware stacks, 13 two-way I/O mouths, 4 tunnel 8 A/D; I/O drives Absorption Current can reach 25mA, also has watchdog circuit, at instrument, control field, advantageous condition is arranged, easy to operate due to its instruction simple (only 35), has been favourably welcome since coming out.

The pulse firing control circuit as shown in Figure 3, its operation principle is as follows: transistor Q2 controls TT transformer oscillating voltage, Q1 keeps the transformer vibration, and Q1, Q2 is controlled by the I/O mouth of single-chip microcomputer.Wherein D1 is the 10V voltage-stabiliser tube.When an I/O mouth sends ignition signal, the transformer starting oscillation is at the about high pressure of 180V of secondary generation.To C1 punching electricity, high-voltage signal just is added on controllable silicon high-voltage signal like this by diode rectification.TT level also given the voltage-stabiliser tube high voltage simultaneously, reaches the breakdown voltage of voltage-stabiliser tube due to high voltage, and voltage-stabiliser tube is breakdown, at this moment diode current flow, trigger controllable silicon D3, the D4 conducting, thereby at the elementary generation high voltage of single-point fire high voltage package, nature is at the secondary approximately high voltage of 12KV-18KV that also just produces.Ignition electrode is received T1 exactly, and T2's is secondary, so after ignition signal sends from single-chip microcomputer, can produce electric spark at ignition electrode, has so just reached the purpose of igniting.The original more complicated of the principle of this firing circuit also can be considered to control with a plurality of I/O mouths the ordinary circumstance people.But can see corresponding to twin furnace and only use respectively an I/O mouth, save the I/O mouth resource of single-chip microcomputer, and it is simple that the control that makes igniting becomes, not only make product reduce cost, and the programme-control igniting that makes the back become much easier, this ignition control circuit, it not only can be applicable to kitchen range igniting, also can be used for simultaneously in other household electrical appliance such as water heater.

Flame detection circuit as shown in Figure 4, it not only makes firing circuit and flame detection circuit well be merged, and the sensor of having abandoned traditional thought detects thought, adopt the realization of a physical principle and ball bearing made using to the detection of flame, circuit is simplified, not only greatly reduce the cost of product, software programming also becomes and is more prone to.Its operation principle is as follows: the oscillating circuit of the transformer in figure can be fully and firing circuit share, effect and the Q1 in oscillating circuit of transistor Q1 are identical, are all the effects of keeping the transformer vibration.What we knew transformer output is AC signal, because fuel gas buring produces gas ions, flame produces the both positive and negative polarity gas ions, and when AC signal arrival flame detection signal probe place, AC signal forms path on flame, thereby flame plays the rectified action of a diode, make the capacitor charging in flame probe left side, produce a negative voltage, become low level through after comparator, can be detected by the I/O mouth of single-chip microcomputer, complete the detection to flare up fire like this.

In order to make the gas combustion range ignition controller can complete the independent unlatching of two kitchen ranges and open simultaneously, except the security of system self check that shares, program also can run under three kinds of ignition mode: kitchen range 1 igniting; Kitchen range 2 igniting; Kitchen range 1, kitchen range 2 are lighted a fire simultaneously.Provide the program flow diagram of single furnace igniting here, as shown in Figure 2.Carry out simultaneously flame and detect in ignition process, misfire and can repeatedly light a fire several times, setting-up time, can not successfully light a fire in limiting time and report to the police simultaneously.

Although the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and details.

Claims

1. a gas-cooker pulse igniting controller, comprise single-chip microcomputer, it is characterized in that: described single-chip microcomputer connects clock oscillation circuit, flame detection circuit, solenoid valve control circuit, buzz circuit and pulse firing control device.

2. gas-cooker pulse igniting controller according to claim 1, it is characterized in that: described single-chip microcomputer is the PIC16C711 single-chip microcomputer.