RU94664U1 - GAS BURNER DEVICE - Google Patents

Abstract

The utility model relates to heat engineering, can be used in domestic heating boilers and apparatuses equipped with gas for heating residential and industrial premises, and facilitates and simplifies the operation of the device during its operation, setting for a given mode and adjustment. This technical result is achieved by the fact that in the gas burner device it is ensured by reducing the metal consumption of the product, increasing the manufacturability of the manufacture of heating equipment by reducing the length of the gas pipeline, reducing the number of connecting parts and, as a result, increasing the degree of reliability of sealed joints; the presence of a flexible capillary pipeline connecting the sensor to the temperature regulator of the heat-transfer medium eliminates the need for rigid coordination of the installation site, which simplifies the assembly and installation of the control system of the heating boiler. 3 pi. 2 ill.

Description

The utility model relates to household appliances and is intended for the periodic combustion of natural gas in domestic boilers equipped with gas.

A gas burner device is known for periodically burning natural gas in domestic heating furnaces (see, for example, RU 37545 U1 Mcl. 7 F23D 14/02, op. 2004) [1]. Gas burner device, consisting of: a frontal shield with a heat reflector, with low-pressure injection burners mounted on it, each of which includes a gas burner head with two rows of holes and a mixing device, in the end of which there is a nozzle for supplying combustible gas with a ring regulator primary air; automatic safety systems, including a mechanical valve, temperature sensor, spring retainer lever, adjusting bracket and injection ignition burner; gas pipelines with fittings; gas tap.

Frontal shield made of sheet steel. In the lower part of the shield there are a number of holes that provide a metered supply of secondary air to the gas burner heads in the combustion zone of the gas-air mixture. The gas burner head and the mixing device are made of a pipe as a whole by the method of plastic deformation, while the holes in the gas burner head are made in two rows with a diameter of 4.5 mm. The primary air ring regulator is made in the form of a disk with protrusions located diametrically opposite to each other. A guide bracket has been introduced into the automatic safety system, a carriage fixed on the bracket with a locking screw, with an axis mounted on it to rotate the lock lever, and a mechanical lock is made on the gas valve.

However, this gas burner device has a number of disadvantages:

- the presence of external connections of parts of elements of the gas-conducting system, which reduces the reliability of ensuring its tightness.

- the complexity of the design of the automatic security system.

- inconvenience of operation when firing the burners of a gas burner device.

Of the known gas burner devices, the closest in technical essence and the achieved results is a gas burner device designed for periodic combustion of natural gas in domestic gas-fired heating furnaces. (see, for example, RU 2321800 C1 Mkl. 7 F23D 14/02, op. 2006) [2].

A gas burner device for periodically burning natural gas in domestic heating boilers, consisting of: a frontal shield with a heat reflector and low-pressure injection burners mounted on it, each burner includes a gas burner head and a mixing device, in the end of which there is a nozzle for supplying combustible gas with a ring regulator of primary air; automatic safety systems, including: a mechanical valve, a temperature sensor, a lever-lock with a spring, an adjustment bracket and an injection ignition burner; gas pipelines with fittings; the gas valve is installed so that its button is perpendicular to the plane of movement of the latch lever, and a temperature regulator of the heat-transfer medium is mounted in the gap between the gas valve and the manifold, the sensor of which is installed in the upper cavity of the framing jacket of the boiler and automatically maintains the set temperature of the heat-transfer medium, due to changes in the amount of supplied combustible gas to low pressure injection burners.

The safety valve and the temperature regulator of the heat-transfer medium combined with the gas valve are made in a common housing, which is a monolithic block, in which two through, interconnected step openings with parallel axes are created, with safety valve elements installed in one through hole and thermostat elements in the other heat transfer medium connected by a flexible pipe to the water sensor.

However, this gas burner device also has a number of disadvantages:

- the difficulty of adjusting the lever-lock system of automatic security due to the large number of degrees of freedom between its parts.

- the complexity of the design of the automatic security system.

- inconvenience of operation when firing the burners of a gas burner device.

The technical result of the inventive gas burner device is to simplify the design of the gas burner device, reduce the metal consumption of the product, increase the manufacturability of heating equipment, increase the convenience of operation and maintenance of gas burner devices by simplifying the design of the device and creating the best conditions for burning combustible gas in heating boilers.

This is achieved by the fact that the known gas burner device for periodically burning natural gas in domestic heating boilers consists of a frontal shield with a heat reflector. On the frontal shield, low-pressure injection burners are mounted. Each burner includes a gas burner head and a mixing device. In the end part of the mixing device, a nozzle for supplying combustible gas with an annular primary air regulator is installed. Elements of the automatic safety system are fixed on the front panel, including: a mechanical valve, a temperature sensor, a locking lever with a spring; injection pilot burner; gas pipelines with fittings. The gas valve is installed so that its button is perpendicular to the plane of movement of the latch lever. In the pipeline rupture between the gas valve and the manifold, a temperature regulator of the coolant is mounted. The temperature sensor of the heat medium regulator is installed in the upper cavity of the framing jacket of the boiler and automatically maintains the set temperature of the heat medium by changing the amount of supplied combustible gas to the low pressure injection burners.

The gas valve is installed so that the axis of its button is parallel to the plane of the front flap and is perpendicular to the axis of the distribution manifold, and the supply of combustible gas to it is carried out from the side. On top of the gas valve parallel to the distribution manifold, a rotary lever-lock system for automatic safety is installed. The locking lever with the left end abuts against the front shield. To the right, it is connected to a temperature sensor through an opening in the front flap and is squeezed by a compression spring from the front flap along a guide fixed to the lever and passing through the hole in the front flap. The right end of the locking lever is inserted into the guide groove of the bracket for fastening the combustible gas supply system. The pilot burner is made with two rows of fire holes. The ignition and the main burners are fastened with two coupling clamps, which are at the same time the attachment of the heat reflector to the front shield. The temperature regulator of the coolant is installed in the pipeline rupture between the gas valve and the manifold and consists of: a temperature setpoint and its regulation system, made in the form of a bellows cylinder. The support of the upper bottom of the bellows cylinder abuts against a shock-absorbing device. A rod with a return device for changing the size of the passage opening of the combustible gas flow control system is installed under the bottom axis of the bellows cylinder. A return device is located along the side wall of the bellows cylinder. The device is a compression spring installed between the support of the upper bottom of the bellows cylinder and the base of the body of the head set the temperature of the coolant. In this case, the bellows cylinder is connected by a flexible capillary tube to a cylindrical cylinder. The cylindrical cylinder acts as a sensitive element of the temperature sensor, is installed in the upper cavity of the framing jacket of the boiler and automatically maintains the set temperature of the heat-transfer medium by changing the amount of supplied combustible gas to low-pressure injection burners. Secondary air is supplied through calibrated or adjustable openings located on the front panel or bottom of the boiler.

The essence of the utility model “Gas burner device” for household heating devices (boilers) equipped with gas is illustrated by the drawings: figure 1 shows a General view of the gas burner device; figure 2 is a top view of the gas burner device.

The positions in the drawings indicate:

1. frontal shield;

2. collector (gas distributor);

3. gas mechanical valve;

4. holes for mounting the gas burner device;

5. openings for supplying secondary air;

6. bracket with a tool tray for installing the gas supply system of the burners;

7. gas burner with a mixing device;

8. gas pipeline burner ignition;

9. The regulator of the ring primary air;

10. protrusion of a coupling collar;

11. locking lever;

12. tensioning screw;

13. guide pin with compression spring;

14. shutter of an inspection opening;

15. groove of the gas valve bracket;

16. valve button;

17. gas valve bracket;

18. thermal reflector;

19. thermal sensor (combustion and traction control sensor);

20. ignition burner;

21. screw with nut;

22. a collar figured coupling;

23. nozzle;

24. pipeline;

25. temperature control medium;

26. tee;

27. head for setting the temperature of the coolant;

28. temperature setter;

29. flexible capillary tube;

30. The cylinder is cylindrical;

31. the body of the head sets the temperature of the coolant;

32. bellows cylinder;

33. spring return;

34. depreciation device;

35. stock with returnable device;

36. the membrane is flexible;

37. bore hole;

38. saddle;

39. The direction of movement of the gas fuel.

40. support of the upper bottom of the bellows cylinder.

In order to simplify the design and configure the automatic safety system, on top of the gas valve 3 parallel to the distribution manifold 2, a pivoting locking arm 11 of the automatic safety system is installed, FIG. 1, FIG. 2. The left end of the locking lever 11 abuts against the front shield 1. To the right, it is connected through a hole in the front shield 1 with a tension screw 12 to the temperature sensor (combustion and traction control sensor) 19 and is pressed by the compression spring from the front shield along the guide pin 13 fixed to the locking lever 11. The guide pin 13 passes through the hole in the front shield 1. The right end of the locking lever 11 is inserted into the groove 15 of the bracket 17 of the safety valve. The groove 15 in the bracket 17 is designed to move the locking lever 11 in a horizontal position and prevents it from moving in a vertical position. The bracket 17 is intended for mounting the fuel gas supply system to the front shield 1.

In order to reduce time and increase the reliability of ignition of the furnace, the ignition burner 21 is made with two rows of fire channels.

In order to reduce the number of fasteners during the assembly of the gas burner device, the ignition burner 20 and gas burners with mixing devices 7 are fastened with two curly clamps 22, which at the same time are the attachment point of the thermal reflector 18 to the front shield 1. The front shield 1 and the heat reflector 18 sec the pilot burner 20 and gas burners 7 with mixing devices are produced by two curly clamp collars 22. Two curly clamp collars 22 are installed between with the frontal 1 and the heat reflector 18 by bending the protrusions 10 of the clamps in the places of the notches in the frontal shield 1 and the thermal reflector 18. The frontal shield 1 and the thermal reflector 18 are pressed against the end surfaces of the clamped clamps 22. The two clamped clamps are tightened with two screws 21 with nuts 21 22 while fixing the gas burners 7 and the pilot burner 20. This simplifies the assembly technology, reduces the number of fasteners used.

The gas supply system with combustible gas consists of: a distribution manifold 2 with replaceable nozzles 23 and primary air regulators 9; the temperature regulator of the heat-transfer medium 25 of the connecting pipe 24. It is installed on the front panel 1 with two brackets 6 with lodgements and a bracket 17. This design of the gas supply system with combustible gas reduces the number of plug-in connections and the consumption of gas pipes, which provides more reliable sealing of gas pipelines and simplifies the technology gas burner assembly.

The temperature regulator of the coolant 25 is installed in the gap of the pipe 24 for supplying combustible gas to the manifold 2 and consists of a tee 26 and a head for setting the temperature of the coolant of the heating system 27. The head 27 is fixed above the upper longitudinal opening of the tee 26. The lower longitudinal and transverse openings of the tee 26 are connected to pipeline parts 24.

A saddle 38, a flexible membrane 36 is installed in the longitudinal opening of the tee 26, between which an adjustable opening 37 is formed for supplying combustible gas 39 to the manifold (gas distributor) 2. A rod with a return device 35 made in the form of a spring is installed above the flexible membrane 36. The upper part of the rod 35 is pressed by the bottom bottom of the bellows 32. The bellows 32 is installed in the housing 31 of the head sets the temperature of the coolant 27.

The support of the upper bottom of the bellows cylinder 40 rests against the depreciation device 34, made in the form of a thrust bearing and compression springs installed in the glass.

A rod with a return device 35 is installed under the bottom axis of the bellows cylinder to change the size of the passage opening of the combustible gas flow control system. A return device is arranged along the side wall of the bellows cylinder, which is a compression spring 33. A spring 33 is installed between the support of the upper bottom of the bellows cylinder 40 and the base of the head body for setting the temperature of the coolant 31. The bellows 32 is connected by a capillary flexible tube 29 to a cylindrical cylinder 30, which acts as a sensitive element of the temperature sensor. A cylindrical cylinder is installed in the upper cavity of the framing jacket of the boiler and automatically maintains the set temperature of the heat-transfer medium by changing the amount of supplied combustible gas to low-pressure injection burners.

The set temperature of the coolant is set by rotating the temperature setter 28 around the axis of the temperature control head 27, by changing the magnitude of the stroke of the rod 35. The section of the bore hole 37 between the flexible membrane 36 and the seat 38 is set in order to ensure the best conditions for fuel combustion. This design of the temperature regulator of the coolant allows you to maintain a more precisely set temperature of the coolant in the heating system due to more accurate control of the flow rate of the amount of combustible gas. The presence of a flexible capillary pipeline connecting the cylindrical cylinder 30 to the temperature regulator of the heat-transfer medium eliminates the requirements of a rigid linking of its installation location, which simplifies the assembly and installation of the control system of the heating boiler.

The gas burner device operates as follows. Checks the presence of draft in the chimney of the boiler. A valve opens on the gas pipeline (not shown in FIG. 1) installed in front of valve 3. A match or a paper rope is ignited. Presses the start button 16 of the valve of the gas mechanical 3 to the stop, figure 1, figure 2. In this case, the combustible gas from valve 3 through the gas line of the ignition burner 8 (see Fig. 1) enters the mixer only from the ignition burner 8, Fig. 2.

At the same time, through the shutter of the inspection hole 14, a lit torch is brought to the ignition burner 20, FIG. 2. The gas-air mixture exiting from the channels (holes) of the ignition head 20 is ignited by a raised flame, and the flame of the ignition burner heats the temperature sensor 19 of the burner device. When heated, the length of the temperature sensor 19 increases. At the same time, the locking lever 11 connected by the tension screw 12 to the temperature sensor 19, FIG. 2, moves away from the frontal shield 1 under the action of a compression spring mounted on the guide pin 13. The right free end of the locking lever 11 finds on the pressed start button 16 of the mechanical valve gas 3, figure 1. With a steady flame of the ignition burner, the gas valve button 16 is held pressed until the lock lever 11 finds at least one third of the diameter of the end surface of the start button 16. Then, pressing and holding with the finger of the start button of the valve 16 stops. Button 16 it is lifted and fixed by the lever with the latch 11. At the same time, an opening is opened in the mechanical gas valve 3 through which combustible gas 39 enters the pipeline 24. The temperature switch 28 is set to the “off” position, the hole is the travel 37 is closed, the stem with the return device 35 and the flexible membrane 36 rests on the seat 38. The temperature adjuster 28 is turned to the on position, the stem with the return device 35 moves up, a gap appears between the flexible 36 membrane and the seat 38, through the passage 37 combustible gas is supplied to the manifold (gas distributor) 2 and through the nozzles 23 it enters the mixing devices of the gas burners 7, in which the gas-air mixture is formed. Further, at the outlet of the openings of the gas burners 7, the gas-air mixture is ignited by the ignition burner 20, with the formation of torches above each hole in the gas burners 7.

To ensure the best conditions for fuel combustion, primary air is regulated by a primary air ring regulator 9, by moving the regulator along the axis of the nozzles 23 until a blue-blue flame appears on the burner head, and the amount of secondary air is set by holes 5. Holes 5 are calibrated or adjustable, and located on the front panel 1 or on the bottom of the furnace.

As the combustion of combustible gas in gas burners 7, the temperature of the coolant rises. Consequently, a heat-expanding liquid is heated in the cylindrical cylinder 30. Its volume increases and is displaced through the flexible capillary tube 29 into the bellows 32. The cylinder 32 is stretched. The bottom of the upper bellows cylinder 40 rests against the shock-absorbing device 34. Since the spring has a greater compression force than the return spring 33, the bellows cylinder stretches toward the stem 35. As the temperature of the heat-transfer fluid in the boiler increases, the cylinder 32 continues to stretch and under the action of moving its bottom, the lower rod 35 continues to move to the flexible membrane 36. At a temperature of the coolant close to the set one, the rod 35 touches the membrane g 36. With a further increase in temperature, the stem 35 presses on the flexible membrane 36 and begins to block the passage opening 37. A smaller amount of combustible gas enters the manifold 2. If the temperature of the coolant continues to increase, then the stem 35 further blocks the passage opening 37 until it closes. In this case, the flame on the gas burners 7 is extinguished, and the flame on the ignition burner 20 continues to burn. As the temperature of the coolant drops below a predetermined temperature, the expansion fluid in the bellows 32 begins to compress, its volume decreases, and the bellows begins to compress under the action of its own elastic forces and the return spring force 33. The force on the stem 35 decreases and under the influence of the return spring located on the rod 35, he begins to rise. The passage hole 37 expands. The amount of combustible gas entering the manifold 2 and the gas burner 7 increases. If the flame on the gas burners 7 has been extinguished, it again ignites from the flame of the ignition burner 20. The temperature of the heat-transfer medium rises, and the process of maintaining the set temperature is repeated.

In the event of the extinction of the gas burners 7 and the ignition 20, the length of the temperature sensor 19 is reduced. The locking lever 11 moves to the front flap 1 and comes off the end surface of the button 16. Button 16 is released from the restriction of movement in the vertical direction. This leads to the closure of the gas valve 3. Access of combustible gas to the pipeline 24, and, consequently, to the ignition burners 20 and gas 7 is terminated.

At the end of the furnace, the valve on the gas supply pipe to the boiler is closed.

An example of using the device. The proposed utility model “gas burner device” has found application in a gas burner device for heating boilers of type AOGV-6.9; AOGV-9.3; AOGV-11.6; AOGV-12.5; AOGV-20; AOGV-30, respectively, at a rated power of 6.9; 9.3; 11.6; 12.5; twenty; 30 kW at a nominal working pressure of natural gas in the network of 1274 Pa (130 mm water supply), intended for periodic combustion of gas in heating boilers equipped with gas. These devices provide heating of rooms of appropriate volumes.

Safety automation stops the gas supply to the main and pilot burners in the absence of draft in the chimney and the flame goes out.

The proposed technical solution facilitates and simplifies the operation of the device during its operation, adjustment, prophylaxis, inspection and repair of the device.

1. Gas burner device (Utility Model Description) RU 37545 U1 μl. 7 F23D 14/02, Bull. No.12 04/27/2004

2. Gas burner device (Description of the invention) RU 2321800 C1 μl. 7 F23D 14/02, Bull. No. 10 04/10/2006.

Claims (3)

1. A gas burner device for periodically burning natural gas in domestic heating boilers, consisting of a frontal shield with a heat reflector and low-pressure injection burners mounted on it, each burner includes a gas burner head and a mixing device, in the end of which there is a nozzle for supply of combustible gas with a ring regulator of primary air; automatic safety systems, including a mechanical valve, a temperature sensor, a locking lever with a spring, an injection pilot; gas pipelines with fittings; the gas valve is installed so that its button is perpendicular to the plane of movement of the clamp lever, and a temperature regulator of the heat transfer medium is mounted in the gap between the gas valve and the manifold, the sensor of which is installed in the upper cavity of the framing jacket of the boiler and automatically maintains the set temperature of the heat transfer medium, due to changes in the amount of supplied combustible gas to low pressure injection burners, characterized in that the gas valve is located so that button its plane parallel to the front panel and perpendicular to the axis of the distribution manifold, a fuel gas supply thereto from the sides; on top of the gas valve, in parallel to the distribution manifold, there is a rotary lever-lock of the automatic safety system, which rests against the front shield with the left end, to the right it is connected to the temperature sensor through the hole in the front shield and is pressed by the compression spring from the front shield along the guide fixed to the lever and passing through the hole in the front shield, the right end of the locking lever is inserted into the guide groove of the bracket for attaching the fuel gas supply system; the ignition burner is made with two rows of fire holes, the ignition and the main burners are fastened with two clamps, the temperature of the coolant is installed in the pipeline rupture between the gas valve and the manifold and consists of: a temperature regulator and its regulation system, made in the form of a bellows cylinder, support its upper bottom rests on a shock-absorbing device, and a rod with a return device for changing the cross-sectional size is installed under the bottom on the lower axis of the bellows cylinder a through hole of the combustible gas flow control system, and along the side wall of the bellows there is a return device representing a compression spring installed between the support of the upper bottom of the bellows cylinder and the base of the body of the head for setting the temperature of the coolant, while the bellows cylinder is connected by a capillary flexible tube to a cylindrical cylinder which performs the functions of a sensitive element of the temperature sensor installed in the upper cavity of the framing jacket of the boiler and cally maintains the desired temperature of coolant media by changing the amount of supplied fuel gas in the low pressure injection burner. 2. A gas burner device for periodically burning natural gas in domestic heating boilers according to claim 1, characterized in that the openings for supplying secondary air are adjustable. 3. A gas burner device for periodically burning natural gas in domestic heating boilers according to claim 1, characterized in that the holes for supplying secondary air are made in the bottom of the boiler.