DD150501A1 - METHOD AND DEVICE FOR COMPLETING BURNER GAS-OPERATED DEVICES - Google Patents

Abstract

The invention relates to a method and a device for closing the burner gas-powered appliances, preferably of water heater and room heaters. The aim of the invention is to reduce the gas consumption for the Zuend- and standby mode, the task is to accomplish an immediate startup from the absolute state of rest in the Nutzbetrieb at selbsttaetigem Zuenden the Zuendbrenners. The method is characterized in that simultaneously with the opening of the gas main valve and the gas injection into the ignition burner, an electrical ignition device is automatically activated in turn via a switch on the gas main valve, the ignition flame of the ignition burner is lit, after a brief burning of the ignition flame by the latter a heat conductor An expansion valve heats, the expansion valve is opened and the gas supply to the main burner is released. In the apparatus, the gas supply line for the ignition burner is connected between the valves connected in series in front of the main burner, which are connected to series-arranged switches of an electrical Zuendbrenner for the ignition burner.

Description

2 1 9503 -

Applicant ^ Günther Neuendorf Lothar Hertzsch

VEB Institute Technical Glass Jena Central Office for Property Rights

PO Box 303

IPKi P 24 H, 1/10

Method and device for igniting burners of gas-powered appliances

Field of the Invention: The invention relates to a method and apparatus for igniting burners of gas powered appliances, such as instantaneous water heaters, space heaters, and other appliances known to have a continuously lit pilot flame to maintain instantaneous operational readiness and safety.

219503

Characteristics of the known technical solutions: There are known ignition devices ¹ , in which one or more constantly burning pilot lights ignite a main burner when opening the gas supply · The pilot lights have a safety function at the same time. This is that when extinguishing the pilot lights, for example due to lack of gas controlled by a bimetallic valve in the gas valve closed and thereby prevents escaping unburned gas despite open main burner valve. The procedure of the method of igniting burners is known as follows:

- operating a valve in the gas main, which continuously supplies the Züii & brennorn gas;

Manually igniting the pilot burner by appropriate means (e.g., match, electric ignition device) to establish continuous operational readiness, which is achieved by means of a bimetal of opening the pilot valve near the main burner · The pilot valve then remains constantly open when the pilot is lit j

- opening of the gas main valve depending on the type of device to bring about the useful operation · In the case of water flow heaters, the opening will be carried out automatically from a water part as soon as the hot water valve is opened. For room heaters, this is done manually or by temperature sensors;

- Automatic ignition of the main burner by the constantly burning pilot light.

These known ignition devices have the advantage that, in order to ensure permanent ignition and operational readiness, the pilot flame must burn continuously and thus Ga3 is consumed unused. In particular, in the case of such appliances which are only occasionally operated in useful operation, the ratio of ignition and standby gas consumption for Nutzgasverbrauch very unfavorable.

Aim of the invention;

The aim of the invention is to provide a method and a device for igniting the burner gas-powered devices, in which the disadvantages of the known methods and

2 19503

Devices are eliminated and the gas consumption for the ignition and standby mode of the device is significantly reduced ·

Explanation of the essence of the invention:

The present invention has for its object to develop a method for igniting the burner gas-powered devices, in which an immediate startup of the device from the absolute idle state in the Nutzbetrieb, ignited the pilot burner automatically and deleted after completion of Nutzbetriebes and a The object of the invention is achieved in that the method for igniting the burner gas-powered appliances, in which in a known manner with constantly open main gas valve and constantly burning pilot flame the pilot burner of the main burner of the device is ignited after opening its gas supply line from the pilot flame, characterized in that from the absolute rest state of the device simultaneously with the opening of the gas main valve and the influx of gas into the pilot burner After a brief burning of the ignition flame, a Y / m sensor of an expansion control valve is heated, the expansion control valve is opened via an adjusting element and the gas supply from the gas main line via the opened gas main valve to the main burner released ·

In addition, the method is characterized in that the expansion control valve is partially opened by the pilot flame of the pilot burner and then fully opened by the fired main burner. This continuous opening of the expansion control valve, which is accelerated after ignition of the main burner by its heat release, an explosion-free ignition of the main burner is achieved · Dao AuGdehnungsatellventil according to the invention switches off during its opening operation via a switch, the electric ignition device.

2 19503

The ignition process for the pilot flame of the pilot burner is inventively preferably triggered by applying a high voltage to an ignition electrode or by an electric heat source »

The device according to the invention, which consists of a main burner and a pilot burner with a gas supply line system, a gas main valve and an associated expansion valve, is characterized in that the gas supply line for the pilot burner is connected between the valves connected in series upstream of the main burner In addition, the gas main and the expansion control valve are each connected to a switch of an electric ignition device for the pilot burner, which are also arranged in series, so that in the closed state of the valves, the switch on the gas main valve opens and the switch on the expansion valve closed is ·

The electric ignition device for the pilot burner preferably has a battery and / or mains connection, a chopper, a high-voltage transformer with ignition element, preferably with ignition electrode, which is arranged in the vicinity of one or more pilot burner, and the switches on the two valves. The pilot burners are only then supplied with gas when the gas main valve is opened and thus the useful operation is produced *

For automatic ignition of the pilot burner preferably such electrical devices are used, which form a spark according to the principle of high voltage ^ - or high-frequency spark generation, which breaks through an air gap or electrical ignition devices that use as an ignition element brought by the electric current to glow conductor or Such devices that exploit the piezoelectric effect for high voltage generation.

In the immediate vicinity of the pilot burner is a heat sensor, which can be reached both by the ignition flame and by the main flame.

This heating sensor is followed by an actuating element which is connected via a capillary line to the expansion adjuster.

219503

The expansion control valve preferably consists of a valve coupled to the heat sensor, which is connected via a valve stem to a switch of the circuit of the electrical ignition device.

The heat sensor is preferably designed as an ampoule with an expansion medium or as Birnetallfübler, the actuator between the heat sensor and valve preferably as a capillary tube with corrugated bellows or as a thermal expansion · The gas main valve is connected via a valve rod also with a switch of the electric ignition device and with the puncture part for Kutzbetrieb ,

The advantages of the solution according to the invention are that account for the operation of the devices, the previous process steps to produce the operational readiness for the main burner. For manually operated devices, e.g. For gas flow heaters, all ignition operations take place automatically from the absolute rest state when the hot water valve is actuated

 For automatically controlled devices, such as Room heaters, burning even after switching off the main burner no pilot light.

Thus, by using the device according to the invention and the new process sequence, a considerable saving of gas is arealized.

Due to the constant opening of the expansion valve and the slowly increasing gas supply to the main burner, an explosion-free ignition of the main burner is made possible

 The erfindungsgeraäße method and apparatus are thus much more cost and energy einspararenuer than the known.

Embodiment:

The invention will be explained in more detail below on an exemplary embodiment.

When the gas main valve is opened, an electric ignition device is switched on at the same time, regardless of the type of actuation, as well as the gas supply from the gas main valve.

• - 6 -

2 19503

tion ζιντι pilot burner released. The 'pilot flame is ignited by the electric ignition device' automatically. After ignition of the pilot flame, this heats a working on the principle of thermal expansion heat sensor Ausdeiinungsstellventils, which is thereby opened, the gas supply to the main burner releases and at the same time switches off the electric ignition device again. By this puncture sequence is secure in that case of disturbances in the electric igniter or Auödelinungsstellventil no unburned gas ausströmt.Die through the main burner burning pilot flame ignites the H _a uptbrenner. The main burner flame additionally heats the heat sensor of the expansion control valve, which thereby completely releases the gas supply to the main burner.

In the accompanying drawing, Fig. 1 shows the structure of a erfindung3geiüäßen ignition device using the example of a hot water heater.

The device consists of the wasserdruckgesteuerton water part 1, which controls the gas main valve 2, the Ausdehnuiigsstellventil 3 * learn Zündbrennor 4, in the vicinity of the ignition electrode is 5, the main burner 6, the heat exchanger .7 and an electric ignition device. The fuel gas flows through the nozzle 8 for the gas supply and the cold water flows through the nozzle 9 for the Wasserzu «management in the device. The heated water leaves via the hot water valve 10 the outlet nozzle 11. The operation of the gas main valve 2 takes place in the known Yiieise through the membrane-controlled water part 1. This results in the following operation of the device:

With the gas main valve 2, a switch 15 is automatically actuated via the extended valve rod 14, which closes the circuit 16 of the electric ignition device when opening the gas main valve 2. The current flowing in the circuit 16 is driven in the described application example by the battery 17, chopped in the chopper 13 and fed to a high voltage transformer 19. The battery 17 can also be replaced or supplemented by a mains connection.

_ ₇ _ 2 19 5 0 3

As chopper both electronic and mechanical chopper, v / ie ζ · Β. the well-known Wagnersche Hammer, applied.

The high voltage generated in the manner described reaches the ignition electrode 5, from which the spark ignites against the pilot burner 4 and ignites the gas emitted there. "The flames burning at the burner 4 heat the heat sensor 20, which is preferably designed as an ampoule with an expansion medium and over the capillary is connected to the corrugated bellows 22.

As a result of the expansion of the expansion medium, the corrugated bellows 22 is distended and the expansion valve 3 is opened via the valve rod 23. The fuel gas reaches the main burner 6 and is ignited by the pilot flame. The movement of the corrugated bellows 22 causes a switch 24 connected thereto via the valve rod 23 switched off, the circuit 16 is interrupted and the spark at the ignition electrode 5 deleted

 By the ignited main burner of the heat sensor 20 is continuously heated, so that the expansion part valve 3 is fully opened thus the full power of the main burner 6 is only gradually comes into effect. As a result, an explosion-free ignition and burning of the main burner 6 is ensured.

Fach closing the hot water valve 10, the gas main valve 2 is closed due to the pressure equalization in the two chambers of the water part 1. The entire gas supply to the main and pilot burners 6 and 4 is blocked and both burners go out.

the ampoule, contained expansion medium contracts, whereby a closing of the expansion control valve 3 takes place.

Claims (7)

1. Method for igniting the burners of gas-operated devices, in which, in known Ѵ / еізе with constantly open main gas valve and constantly burning pilot light of the pilot burner of the main burner of the 'device after opening his gas supply line from the pilot flame is healthy, characterized in that from the absolute rest state of the device simultaneously with the opening of the gas main valve and the influx of gas into the ignition 0 burner automatically successively set via a switch on the gas main valve an electric ignition inoperative, the pilot flame ignited after a brief burning of the pilot flame through this a heat sensor of an expansion valve, the Ausdehnungs.atellventil opened via an actuator and the gas supply is released from the gas main via the open gas main valve to the main burner » 2 · Method according to item 1, characterized in that the expansion control valve is partially opened by the ignition flame of the pilot burner and then completely by the ignited main burner. 2 19503 -9- 3 · Method according to items 1 and 2, characterized in that the expansion control valve shuts off the electrical ignition device during its opening process via a switch. 4 · Method according to item 1 to 3i, characterized in that the ignition process for the ignition flame of the pilot burner is preferably triggered by applying a high voltage to an ignition electrode or by an electric heat source. Apparatus for igniting burners of gas-operated appliances according to item 1, comprising a main burner and a pilot burner with a gas supply line system, a gas main valve and an associated heat radiator. 9 2 1 9503 Ler provided expansion valve, characterized in that the gas supply line (25) for the pilot burner (4) between the front of the main burner (6) connected in series valves (2, 3), preferably the gas main (2) and the expansion control valve (3) , is connected and that the valves (2} 3) are connected in series with switches (15 j 24) of an electrical ignition device for the pilot burner (4). Characterized in that the electrical ignition device for the pilot burner (4) preferably has a battery (17) and / or mains connection and from a chopper (18), a high-voltage transformer (19) with ignition electrode (5 ), the switch (15) on the gas main valve (2) and the switch (24) on the expansion control valve (3). 7 · Device according to point 5, characterized in that a valve rod (14) of the gas main valve (2) the switch (15) with a puncture part (1) for the useful operation of the device, preferably in Gasdurchlauferhitzern the water part (1), and a valve rod (23) of the expansion control valve (3) connect the switch (24) with the control element of the heat sensor (20), preferably in continuous flow heaters a corrugated bellows (22) and a capillary (21) » For this 1 page drawings