RU2631365C1 - Two-stage diffusion-kinetic burner - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: two-stage diffusion-kinetic burner contains a gas pipeline, a channel fan, a firing device, a gas distributor, a confuser-diffuser device, the gas pipeline is made in the form of two parallel stages, each of which is equipped with a solenoid valve, and the electrical circuit of the channel fan is equipped with active resistance in the form of a capacitor with the possibility to provide two operation modes of the channel fan for supplying different volumes of air for the first and both operation stages of the burner.

EFFECT: cheaper production of thermal energy, elimination of commissioning works, simplification of the gas burner maintenance.

3 dwg

Description

FIELD OF THE INVENTION

The invention relates to the field of energy, in particular to a two-stage diffusion-kinetic burner, and can be used in the manufacture of hot water and steam boilers and outdoor boilers.

State of the art

Known atmospheric gas burner containing a gas regulator, consisting of a control unit connected to a temperature sensor using a control channel, a control unit connected to a flame sensor, traction control channel, while it is equipped with a second gas regulator consisting of a control unit connected to temperature sensors for water and outdoor air, the control unit, while the second gas regulator is installed with the possibility of parallel connection of the cavities of the control units and the temperature sensor external air by connecting to the control unit of the second gas regulator, and the percentage of gas supply to the burner by both regulators is set by taps (see US Pat. RU No. 2196939, IPC F24N 1/00, F24D 14/60, publ. 20.01.2003) .

The disadvantages of this burner are limited functionality, as well as high consumption of gaseous fuel, low reliability.

Known two-stage atmospheric combined gas burner containing gas controllers of the first and second stages connected in parallel, each of which consists of a control and regulation unit, a start button, a membrane with a rigid center, a valve with a seat, an upper cavity, a membrane and a two-position shutter, a drainage nozzle and nozzles of a pressure source, a throttle with a channel, flame sensors, traction and network gas, two valves, a burner with an igniter, a furnace, three temperature controllers with corresponding temperature control sensors s, a switch with a diaphragm, while it is additionally equipped with a fan with a guide tray and automatic air valves, an electromagnetic coil, a voltage sensor and a micro switch, and the control and regulation unit of the second regulator of the second stage is connected to the cavity of the switch through the diaphragm with the possibility of providing "on-off "Microswitch, the latter is connected to the fan motor, and the cavity of the switch is connected to the voltage sensor, and the fan connected to a guide pan located under the burner, while the guide pan contains automatic air valves freely mounted on the axis (see US Pat. RU №2324113, IPC F23D 14/60, F23N 5/24 publ. May 10, 2008).

The disadvantage of this burner is the inability to use it in horizontal outdoor boilers with a cylindrical furnace due to the large area of the diffusion part of the atmospheric burner and the need to rotate the torch 90 ° in order to coaxially position the torch with a cylindrical furnace of the boiler intended for use with blast burners.

The closest in technical essence and the achieved positive effect and adopted by the author for the prototype is a diffusion-kinetic burner containing a gas pipeline with a gas valve connected to a multifunction controller, ball valve, ignition device, gas distribution pipes with holes, confuser-diffuser elements installed above each a hole, a duct fan with an air duct, while the burner consists of a housing in the form of a panel on which an ignition device is installed, gas distribution pipes with openings, confuser-diffuser elements installed above each hole, a duct fan with an air duct, and the diffuser part of the burner is installed coaxially with the air duct and a duct fan, the latter being equipped with a regulating washer mounted on the axle suction nozzle (see Pat. RU No. 2596081, IPC F23D 14/04, F23N 5/24 publ. 08.28.2016).

The disadvantage of this burner is its one-stage design, it works on and off, while turning off the burner, a part of the heat removed by the chimney to the atmosphere is lost, the boiler efficiency is reduced.

Disclosure of invention

The objective of the invention is the development of a two-stage diffusion-kinetic burner (DGD-K) for an outdoor boiler, which reduces the cost of heat production due to better gas burning, with the exception of commissioning using expensive "Testo" appliances, simplifying the maintenance of a gas burner device.

The technical result that can be obtained using the present invention is to reduce the cost of thermal energy production, the exclusion of commissioning, simplifying the maintenance of a gas burner device.

The technical result is achieved using a two-stage diffusion-kinetic burner containing a gas pipeline, a channel fan, an ignition device, a gas distributor, a diffuser, and the gas pipeline is made in the form of two parallel stages, each of which is equipped with an electromagnetic valve, and the circuit diagram of the channel fan equipped with an active resistance in the form of a capacitor with the ability to provide two modes of operation of the channel fan for feeding various volume of air for the first and both stages of the burner.

Thus, the technical result is achieved due to the fact that the proposed burner uses a two-stage gas supply circuit and a two-stage operation mode of the channel fan, which provides the supply of various volumes of air for the first and both stages of the diffusion-kinetic burner, while the specified gas-air ratio is maintained at the operation of the first and both stages, and the burner is in continuous operation, only the second stage is turned on and off, which ensures more economical consumption e gas compared to single-stage combustion.

Brief Description of the Drawings

In FIG. 1 shows a two-stage diffusion-kinetic burner, general side view, section.

In FIG. 2 - the same, a top view in section.

In FIG. 3 - the same burner control circuitry.

The implementation of the invention

A two-stage diffusion-kinetic burner (GDK) consists of a panel 1 connected to a channel fan 2 using an air duct 3, while the channel fan 2 contains an air pressure sensor 4 with a microswitch 5, and a diffuser-confuser device 6, an ignition burner are installed on panel 1 7, also on the panel 1 there is a gas distributor 8 to which the gas pipelines 9 and 10 of the first and second stages are connected, respectively, while the gas pipeline 9 of the first stage contains an electromagnetic valve 11 and a ball valve 12, a gas pipeline 10 of the second stage contains a solenoid valve 13 and a ball valve 14, and the pilot burner 7 contains a microswitch 15. The burner circuitry contains an automatic machine 16, a solenoid valve 11, a solenoid valve 13, a channel fan 2, a thermostat 17, a limit thermostat 18, and a sensor contact 19 4 air pressure and additionally installed resistance in the form of a capacitor 20, contact 21 of the microswitch 15.

A two-stage diffusion-kinetic burner operates as follows.

Ignite the ignition burner 7, turn on the machine 16, while the coolant is cold, the contacts of the operating and limit thermostats 17 and 18 are respectively closed, the contacts 21 of the microswitch 15 are also closed, since the ignition burner 7 is turned on, the contacts of the electromagnetic valve 11 are closed, it starts to gain speed duct fan 2, the solenoid valve 11 of the first stage opens, the ball valve 12 is opened, through the gas pipeline 9 the gas enters the diffuser-diffuser 6, through the gas distributor 8 it lights up from the fuse of the first burner 7 and the first stage of the burner starts to work, the combustion air enters from the channel fan 2 through the air duct 3, through the panel 1 to the diffuser-confuser device 6, where it mixes qualitatively with the gas, after the channel fan 2 has gained full speed, the contacts 19 of the microswitch 5 of the air pressure sensor 4 are closed, the gas enters the opened electromagnetic valve 13, the ball valve 14 is opened, the gas enters the confuser-diffuser device 6 through the gas pipeline 10, two when the heating medium reaches the temperature set by the operating thermostat 17, its contacts open and close the contact through the condenser 20, the speed of the channel fan 2 decreases, the contacts 19 of the microswitch 5 of the air pressure sensor 4 open, the electromagnetic valve 13 closes, only the first one continues to work stage of a two-stage GDK burner, the burner power decreases, the coolant cools, the operating thermostat 17 closes the contacts, the capacitor 20 is de-energized, the duct fan 2 increases the momentum contacts of microswitch 19 5 air pressure sensor 4, the solenoid valve 13 opens automatically into operation the second stage of a two-stage burner HDV, thus ensuring efficient operation of the HDV burner, activation and deactivation of the second burner stage occurs automatically. In the event of an emergency, for example, failure of the circulation pump (not shown in the Fig.), When the second stage of the burner is turned off, the coolant temperature rises to that set by the limit thermostat 18, its contacts open, the electric circuit is de-energized, it is necessary to eliminate the malfunction and restart the two-stage burner by the diffusion-kinetic operator, when the pilot burner 7 goes out, the contacts 21 of the microswitch 15 open, the electrical circuit is de-energized, to fix the malfunction and restart the GDK burner.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- cheapening the production of thermal energy;

- exclusion of commissioning;

- simplification of gas burner device maintenance;

- improving the reliability of the burner;

- improving the efficiency of the two-stage diffusion-kinetic burner.

Claims (1)

A two-stage diffusion-kinetic burner containing a gas pipeline, a channel fan, an ignition device, a gas distributor, a confuser-diffuser device, characterized in that the gas pipeline is made in the form of two parallel stages, each of which is equipped with an electromagnetic valve, and the circuit diagram of the channel fan is equipped with active resistance in the form of a condenser with the ability to provide two modes of operation of the channel fan for supplying different volumes of air for the first and beih burner stages.

Images