CN2697485Y

CN2697485Y - Flame miniting automatic ignitor

Info

Publication number: CN2697485Y
Application number: CN 200320126762
Authority: CN
Inventors: 李咸和
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-10
Filing date: 2003-12-10
Publication date: 2005-05-04
Anticipated expiration: 2013-12-10

Abstract

The utility model relates to a flame monitoring automatic ignitor, the whole device is composed of a flame ion current monitoring part and a high voltage happening part. The actual circuit comprises a direct current power supply, a pulse circuit, a high voltage electricity, a 24V direct current power supply, the wave-filtering wave-detecting network of current and a direct current amplifier. The negative end of a diode in the direct current power supply is connected with the positive end of the diode in the pulse circuit, and one end of a capacitor in the pulse circuit is connected to the upper end of a primary coil in the high voltage electricity; the cathode of a controlled silicon in the pulse circuit is connected to the lower end of the primary coil in the high voltage electricity. The utility model has light weight, small size and long service life. The flame monitoring automatic ignitor has the functions of automatic monitoring, automatic ignition, automatic alarm, etc. The flame monitoring automatic ignitor can satisfy the requirement of automatic control for firing process.

Description

The flame monitoring automatic ignitor

Technical field:

The utility model relates to a kind of automatic monitoring on the gas burner, electronic installation of lighting a fire automatically of being used for, and is specially a kind of flame monitoring automatic ignitor, belongs to International Classification of Patents F24C3/10 " configuration of portfire or installation " technical field.

Background technology:

Ignition operation during gas burner work, traditional open firing point combustion that applies a torch; Also useful " industrial frequency AC step-up transformer " (50KV) high-voltage spark of the generation of manual operations lighted.This classic method is safety, convenient inadequately, lacks the automatic electronic technology.

Summary of the invention:

The purpose of this utility model provides a kind of electronic technology means that uses and makes, and is suitable for the work igniting of various gas burners under the industrialized condition, and the flame monitoring automatic ignitor of the automatic warning function of monitoring flame non-normal flameout.

The technical solution of the utility model is as follows.

A kind of flame monitoring automatic ignitor, whole device are divided into the flame ion current monitoring and two large divisions's composition takes place high pressure.Its physical circuit comprises direct supply (1), pulsing circuit (2), high-tension electricity (3), 24V direct supply (4), current filtering detection network (5), direct current amplifier (6).Detected signal---flame ion electric current (0.5-10 μ A) is obtained by the monitoring electrode (9) that is installed on the gas combustion apparatus, and delivers to filter detection network (5); After filtration, the Weak current signal after the detection is delivered to direct current amplifier (6); Promoted relay control high pressure generating unit by the current signal after the high power amplification and divide work.

Diode negative terminal in the direct supply (1) connects the diode anode in the pulsing circuit (2), and an end of the capacitor in the pulsing circuit (2) is connected to the upper end of primary coil in the high-tension electricity (3); Controllable silicon negative electrode in the pulsing circuit (2) is connected to the primary coil lower end in the high-tension electricity (3).

Obvious advantage of the present utility model is:

1, (the electric spark energy is not very big according to the needed electric power of gas ignition, about 100mJ), as long as with due regard to combustion air is to the adverse effect factor of igniting, just sell suitable power headroom, relate to high-pressure generating circuit according to actual needs as far as possible, accomplish to simplify to greatest extent circuit, reduce components and parts, reduce weight, reduced volume.Thereby the minimizing failure rate reduces cost.Traditional ignition transformer weight is about 2Kg, and the not enough 150g of the utility model.Only 8 in the electronic component that high-pressure generating circuit uses altogether, the cost of manufacture of this part is less than 20 yuan, and an existing import ignition transformer will be sold for 800 yuan, a homemade ignition transformer also will be sold for 500 yuan.

2, traditional ignition transformer is a kind of industrial frequency AC step-up transformer, and when manually-operated was lighted a fire, reality all will surpass " nominal capacity ", because the arcing time factor of its design is lower, if the time of striking sparks continuously is longer slightly, just burns out coil easily.And the utility model adopts " spike pulse " to form circuit, and being added on the high-tension electricity primary coil is the extremely steep spike pulse in forward position, forms the secondary high voltage easily, the usefulness but the power that transmits is not quite enough lighted a fire.So the continuous discharge sparking is after 48 hours, the high-tension electricity temperature rise is still very little, and spoilage is extremely low.

3, the utility model is owing to adopt electronic technology, have or not monitoring and high pressure spark ignition combination to flame are designed to one, it is become have automatic monitoring, igniting automatically, the multifunctional dot firearm of reporting to the police automatically, compare with independent ac step-up transformer, obviously more can satisfy the needs of modernized automation process process control.

Description of drawings:

Fig. 1 is an outside drawing of the present utility model;

Fig. 2 is a schematic block circuit diagram of the present utility model.

Among the figure: 1, direct supply, 2, pulsing circuit, 3, high-tension electricity, 4, the 24V direct supply, 5, current filtering detection network, 6, direct current amplifier, 7, spark electrode, 8, auxiliary electrode, 9, the monitoring electrode.

Embodiment:

Suppose that at first gas burner is not lighted a fire, because of non-flaming combustion, so do not have the flame ion electric current to pass through on the monitoring electrode.Final driving circuit in the direct current amplifier (6) is in " closed circuit " state, the normally closed contact of relay " closure ".Connect direct supply (1), pulsing circuit (2) work, " spike pulse " that it produces is added to the primary coil of high-tension electricity (3).Make between the spark electrode that is contained on the gas burner and the auxiliary electrode at the high pressure about the 50KV that induction on the secondary coil produces and to produce discharge spark.As having opened air valve to the gas burner air feed this moment, then electric spark can be lighted it.After the flame normal combustion, the monitoring electrode that is in the flame will be collected the flame ion electric current that produces because of ionizing event.Though these gas currents are quite small, but make the final driving circuit " open-minded " in the direct current amplifier (6) after detection network (5) is amplified by the high power direct current after filtration, relay " adhesive ", normally closed contact " disconnection ", direct supply (1) outage, pulsing circuit (2) quits work, no high pressure output, electric spark extinguishes, and ignition operation stops.

As stop working because of certain reason is improper (this is quite dangerous), then the utility model can send flame-out alarm to gas burner at once, and starts igniting automatically immediately, directly fire is rekindled at work, and releasing is reported to the police.

Claims

1, a kind of flame monitoring automatic ignitor, whole device is divided into the flame ion current monitoring and two large divisions's composition takes place high pressure, and it is characterized in that: physical circuit is provided with direct supply (1), pulsing circuit (2), high-tension electricity (3), 24V direct supply (4), current filtering detection network (5), direct current amplifier (6); Diode negative terminal in the direct supply (1) connects the diode anode in the pulsing circuit (2), and an end of the capacitor in the pulsing circuit (2) is connected to the upper end of primary coil in the high-tension electricity (3); Controllable silicon negative electrode in the pulsing circuit (2) is connected to the primary coil lower end in the high-tension electricity (3).