SU1249269A1 - Device for controlling burner operation - Google Patents

Description

The invention relates to the field of gas fittings containing a gas supply valve, the position of which depends on the setting effect of the thermoelement and the state of the nozzle-valve type damper sensor.

The purpose of the invention is to increase reliability and versatility by reducing the inertia and eliminating the replacement of drossel.

FIG. 1 shows the device, section and wiring diagram; figure 2 - the throttle nozzle, a cross-section.

The device for controlling the operation of the burner contains a thermocouple 1, a pilot light 2, a sensor 3 tons, a housing 4 with a blocking valve 5, a rod 6 and a handle 7, the upper cover 8, an electromagnetic valve 9, the lower cover 10 with a sealing gasket 11 forming with body closed chamber 12, thermoregulation valve 13c control handle 14, with a bellows 15 and a thermal cylinder 16.

The closed chamber 12 is connected to the sensor 3 through the opening 17, ac with a pilot 2 through the opening 18, which in the output part is designed as a nozzle, i.e. its edges are rounded and cleanly processed; it is located under the sealing gasket 11, which is designed as a light thin membrane above it.

Inter-valve cavity 19 is formed in case 4 between valves 5 and 13, it communicates with chamber 12 through choke 20, whose diameter is about four times smaller than the diameter of orifice 17, and pulse line 21. From chamber 22 of the device, gas flows to burner 23. Throttle 20 in. The output part as well as the opening 18, is made in the form of a nozzle (throttle-nozzle) and is in contact with the sealing gasket 11, which is made as follows: between two gaskets 24 and 25 is placed a 0.3 mm thick polyethylene film 26 gaskets have concentric holes, coaxial throttle nozzle 20 and the hole 18, their diameter is equal to the width of the chamber 12

The device works as follows.

The handle 14 is turned and the valve 13 is closed, the handle 7 is pressed - the valve 5 closes the double-seat hole, the valve 9 opens this hole from the bottom, the gas enters the cavity 19 through

an annular gap between the thin part of the stem 6 and the valve body 5 and further through the nozzle throttles 20 - into the chamber 12 and to the pilot light 2, where the gas is ignited.

In the off position, the gas pressure device above and below the gasket 11 is not; it itself is at the point of contact with the throttle nozzle 20

and the opening 18 is a thin, weightless film, so the gas from the throttles 20 flows in and fills the chamber 12, raising the gasket 11 with the bulge upwards.

Approximately 10–30 s after ignition of the igniter 2, thermocouple 1 warms up, and its EMF ensures the open position of the solenoid valve 9; handle 7 is released, and she.

rises together with the valve 5 - the double-seat opening is open to the full passage of gas into the cavity 19. The handle 14 opens the valve 13 and delivers gas to the burner 23, gas pressure appears in chamber 22, it is always slightly less than under the gasket 11, therefore, it remains curved upwards and does not prevent gas from escaping into the chamber 12 and further to the pilot 2. When the pilot 2 goes out, the valve 9 automatically closes in 5-20 seconds, as the thermocouple t disappears and the EMF disappears. In case of violation of these outgoing from

the gas burners rotate them, the gases enter the room and heat the bimetal of sensor 3 — its nozzle opens and releases gas from chamber 12 through aperture 17. Pressure in

it drops sharply to zero, and also

almost simultaneously goes out

pilnik 2 - after cooling the thermocouple 1 after 5-20 seconds, the solenoid valve 9 turns off the gas.

Pressure drop in chamber 12 in ca

The first moment is due to choke 20: the gas flows through a small one. (0.8 mm) hole in the closed distribution chamber 12, and out of it. to the igniter 2 (diameter, nozzle 0.5 mm) and through a large hole 17 (s 3.5 mm) into the atmosphere.

The next time after the beginning of the pressure drop in the chamber 12, the weightless gasket 11 under the action of pressure in the chamber 22 bends and closes the throttle nozzle 20 and the hole

3 -12492694

18 — simultaneously with the extinguishing of the 3-a from the sensor 3, since the gas in the chamber 2 stops the emission of gas, re 12 is not.

(rig. g

Claims (1)

DEVICE FOR CONTROLLING A BURNER OPERATION, comprising electromagnetic and thermostatic valves located in a housing having a closed chamber formed by a lower cover and a gasket connected to a draft sensor and igniter through openings in the cover and through an impulse line with an orifice with an intervalve cavity, characterized the fact that, in order to increase reliability and versatility by reducing inertia and eliminating the replacement of the throttle, the throttle in it is made in the form of a nozzle and is installed at the end of the impulse line and under the sealing gasket, the hole in the cap connecting the closed chamber to the igniter is made in the form of a nozzle larger than the diameter of the throttle nozzle, and the sealing gasket above the nozzles is made in the form of a membrane that overlaps both nozzles simultaneously when pressure drops in the closed chamber. ₀₉₎ _SJLL1249269 At