SU1335777A1 - Device for electric ignition of gas - Google Patents

Abstract

The invention relates to the field of pulsed technology and can be used to ignite gas in household gas appliances. The purpose of the invention — a simplification of the device — is achieved by reducing the number of semiconductor switches, diodes, and resistors compared with the prototype. The device contains capacitors 1 and 15, diodes 2 and 17, resistors 3 and 16, closing contacts 4 and 8 of control button 5, terminals 6 and 7 of the mains supply, thyristor 9, primary winding 10 of pulse transformer 11, the secondary winding 12 of which is loaded on the discharge gap 13, the opening contacts 14 of the button 5. When the device is operating, the capacitor 1 is discharged to the winding 10 when the thyristor 9 is turned on, exciting a high-voltage pulse on the winding 12, providing an electric spark discharge. To resume the discharges, you must release the button at 5 div discharge capacitor 15 through resistor 14 and contacts 16, and then press the button 5. 1 yl. / h (2 SL

Description

The invention relates to a pulse technique and can be used for gas ignition in household gas appliances.

The aim of the invention is to simplify the device by reducing the number of semiconductor switches, diodes and resistors.

The drawing shows a circuit diagram of the device.

The device contains the first capacitor 15, the first output of which is connected through the first diode 2 connected in series, the first resistor 3 and the first closing contacts 4 of the control button 5 are connected to the first pole 6 of the supply network, the second pole 7 of which is connected to the second output of the capacitor through the second closing contacts 8 of the button 5 1 and the anode of the semiconductor key (thyristor) 9, the cathode of which is connected to the first plate of the capacitor 1 and the anode of the diode 2 through the primary winding 10 of the pulse transformer 11, the secondary winding 12 of which on the discharge gap 13. The opening contacts 14 of the button 5 are connected to the discharge circuit of the second capacitor 15, the first output of which is connected via the second resistor 16 to the cathode of the second diode 17 connected by an anode to the connection point of the resistor 3 with contacts 4, and the second output of the capacitor 15 is connected to the control electrode of the thyristor 9.

The device works as follows.

When you press the button 5, for example, in the negative half-period (at pole 7), the capacitor 15 is charged to a voltage close to the amplitude value along the circuit: pole 6, contacts 4, diode 17, resistor 16, capacitor 15, control transition thyristor 9, winding 10, capacitor 1, pins 8, pole 7. At the same time, capacitor 1 is also charged before the voltage, for example, at the order of a smaller voltage of the capacitor 15, since it has a much higher capacity, and by the end of the second half of the half cycle is discharged to the network through diode 2 and resistor 3.

In the positive half-period, capacitor 1 through diode 2 and resistor 3 are pulled from the network to a voltage close to the amplitude value U, Algebraic sum of the network voltages and charged capacitors 1 and 15 is applied to diode 17. At the beginning of the negative half-period, diode 17 opens and a subplot of capacitor 15 is formed from capacitor 1 and the network through diode 17, resistor 16 and thyristor control transition 9. The latter is turned on, and capacitor 1 is discharged to winding 10, energizing a high-voltage pulse on winding 12 and creating spark discharge

When the next positive half cycle occurs, capacitor 1 is recharged to a voltage close to the value of U, accumulating energy

for the next bit. Since the capacitor 15 received a metered charge in the previous negative half-period and the voltage across it increased, the diode 17 and, accordingly, the thyristor 9

they are not opened at the beginning of the next negative half-period, but somewhat later, providing the next high-voltage discharge at the output. This process is repeated during the first

half of each negative half cycle until the capacitor 15 is charged to a voltage close to 2U, when the charge current of the capacitor 15 decreases as much as

that the thyristor cannot turn on 9.

To resume the bits, you must release the button 5, discharge the capacitor 15 through the contacts 14 and the resistor 16, and then press the button 5 again.

Claims (1)

Invention Formula A gas electrical ignition device containing a first capacitor, the first output of which is connected through a series-connected first diode, first resistor and first make contacts the button and control is connected to the first pole of the supply network, the second capacitor, the first terminal of which is connected via a second resistor to the cathode of the second diode connected by the anode to the connection point of the first resistor with the first closing contacts of the control button, a semiconductor switch, a pulse transformer, the secondary winding of which is connected to  1335777 the output of the device, the disconnecting control knobs are connected to the second cycle of the control button in the circuit to the supply mains circuit, and the second output of the SECOND capacitor and the second behind-second capacitor are connected to the trigger contacts of the control button that controls the semiconductor, that, for the purpose of simplifying the device, the second primary winding of the pulsed trans output of the first capacitor is connected to the first output terminal of the semiconductor key anode and the first condenser Gross carrying torus and the anode through the second open contacts kno- IQgo diode.