WO2021244493A1 - Brûleur et chauffe-eau à gaz - Google Patents

Brûleur et chauffe-eau à gaz Download PDF

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Publication number
WO2021244493A1
WO2021244493A1 PCT/CN2021/097444 CN2021097444W WO2021244493A1 WO 2021244493 A1 WO2021244493 A1 WO 2021244493A1 CN 2021097444 W CN2021097444 W CN 2021097444W WO 2021244493 A1 WO2021244493 A1 WO 2021244493A1
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WO
WIPO (PCT)
Prior art keywords
combustion chamber
burner
mixed gas
combustion
temperature
Prior art date
Application number
PCT/CN2021/097444
Other languages
English (en)
Chinese (zh)
Inventor
梁泽锋
钱晓林
陆祖安
曲绍鹤
李忠华
Original Assignee
芜湖美的厨卫电器制造有限公司
美的集团股份有限公司
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Application filed by 芜湖美的厨卫电器制造有限公司, 美的集团股份有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Publication of WO2021244493A1 publication Critical patent/WO2021244493A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/66—Preheating the combustion air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/70—Baffles or like flow-disturbing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • This application relates to the technical field of high-temperature air combustion, in particular to a burner and a gas water heater.
  • High temperature air combustion Temperature air combustion is called "mild and deep low-oxygen dilution combustion", or soft combustion for short, is a new type of combustion method, also known as MILD combustion.
  • the main characteristics of this combustion are: the chemical reaction mainly occurs in a high temperature and low oxygen environment, the temperature of the reactants is higher than its natural temperature, and the maximum temperature rise during the combustion process is lower than its natural temperature, and the oxygen volume fraction is extremely diluted by the combustion products. Low concentration, usually 3% to 5%.
  • the main purpose of this application is to propose a burner and gas water heater with high-temperature air combustion function.
  • a burner proposed in this application includes:
  • Shell formed with a combustion chamber
  • a pre-mixer is set to connect gas and air for pre-mixing, and provide mixed gas to the combustion chamber;
  • a preheating burner which is configured to ignite the mixed gas in the combustion chamber and heat the temperature in the combustion chamber to a preset temperature
  • An injection pipe the air inlet of the injection pipe is in communication with the premixer, and the injection port of the injection pipe is in communication with the combustion chamber so as to be configured to inject mixed gas into the combustion chamber so that the combustion The high-temperature air combustion reaction takes place indoors.
  • the injection port of the injection pipe is provided on the side of the combustion chamber.
  • a plurality of injection ports of the injection pipe are arranged at intervals along the circumference of the combustion chamber.
  • the preheating burner has a mixed gas distribution chamber, the air inlet of the mixed gas distribution chamber is in communication with the premixer, and the air outlet of the mixed gas distribution chamber is in communication with the combustion chamber.
  • the spray tube is separately arranged on the outside of the housing.
  • a seal is provided at the connection between the spray tube and the housing.
  • the combustor further includes a flow guide member configured to guide the mixed gas discharged from the premixer to the gas outlet of the mixed gas distribution chamber and the injection pipe respectively Air intake.
  • the air inlet of the injection pipe communicates with the side of the mixed gas distribution chamber
  • the deflector is a deflector suspended in the mixed gas distribution chamber, and the deflector is arranged opposite to the air inlet of the mixed gas distribution chamber.
  • the preheating combustor includes a shell forming the mixed gas distribution chamber, a combustion assembly provided at the gas outlet of the mixed gas distribution chamber, and a combustion assembly provided in the combustion chamber and configured to face all The ignition device for igniting the combustion assembly.
  • the housing is provided with an opening at one end;
  • the outer shell cover of the preheating burner is arranged at the opening of the shell.
  • the combustion assembly includes a plate-shaped body and a plurality of air passage holes provided through the thickness direction of the plate-shaped body.
  • the plate-shaped body is convexly formed in a groove shape toward the combustion chamber.
  • the plate-shaped body is limited to be located between the outer shell of the preheating burner and the shell.
  • the burner further includes a flame induction device, the flame induction device is provided in the combustion chamber and is electrically connected to the preheating burner, so as to detect that the preheating burner is not in combustion. In the state, the flame sensing device controls the preheating burner to re-ignite.
  • the burner further includes a temperature measuring device, the temperature measuring device is arranged in the combustion chamber, and the temperature measuring device is configured to detect whether the temperature in the combustion chamber reaches a preset target temperature.
  • the oxygen concentration in the combustion chamber is lower than 5%-10%.
  • the premixer includes:
  • the casing is formed with an air inlet duct, a gas flow channel, and a mixing channel.
  • One end of the mixing channel is connected to the air inlet duct and the gas flow channel respectively, and the other end of the mixing channel constitutes the preheater The air outlet of the mixer; and,
  • the fan is arranged in the mixing channel and is arranged to pre-mix the gas and air.
  • a heat insulation layer is provided on the inner wall or the outer wall of the combustion chamber.
  • the preheating burner is a fully premixed burner.
  • the present application also provides a gas water heater, including a heat exchanger and a burner, the burner including:
  • Shell formed with a combustion chamber
  • a pre-mixer is set to connect gas and air for pre-mixing, and provide mixed gas to the combustion chamber;
  • a preheating burner which is configured to ignite the mixed gas in the combustion chamber and heat the temperature in the combustion chamber to a preset temperature
  • An injection pipe the air inlet of the injection pipe is in communication with the premixer, and the injection port of the injection pipe is in communication with the combustion chamber so as to be configured to inject mixed gas into the combustion chamber so that the combustion Indoor high-temperature air combustion reaction;
  • the heat exchanger produces hot water by using the heat generated by the burner.
  • the premixer provides a mixed gas of fuel gas and air; the mixed gas enters the preheating burner and is ignited to produce flue gas, realizing high-temperature preheating air; the mixed gas enters the injection pipe and is ejected.
  • Cooperating with high-temperature preheated air produces an entrainment effect, which allows high-temperature flue gas to flow back.
  • it achieves heat preservation and enables spontaneous combustion of gas in the combustion chamber.
  • the burner with high-temperature air combustion function provided by the present application has a structure of the burner frame, which can miniaturize the components that realize high-temperature air combustion, and has more application space and value, in addition to low noise, sufficient combustion and
  • Fig. 1 is a schematic structural diagram of an embodiment of a burner provided by this application;
  • Fig. 2 is a schematic cross-sectional view of a part of the structure of the combustor in Fig. 1;
  • Fig. 3 is a schematic diagram of an enlarged structure at A in Fig. 2;
  • Fig. 4 is a schematic diagram of an enlarged structure at B in Fig. 2.
  • the purpose of this application is to use the characteristics of high-temperature air combustion to design a new type of burner and apply it to a gas water heater, so that the gas water heater can effectively reduce CO and NOx emissions and reduce the noise of the gas water heater.
  • This application proposes a burner, which is suitable for gas water heaters and related products and equipment that use gas combustion to generate high-temperature hot water for household bathing and heating, including gas wall-hung boilers.
  • gas water heaters and related products and equipment that use gas combustion to generate high-temperature hot water for household bathing and heating, including gas wall-hung boilers.
  • the following is for ease of understanding, and it is applied to gas water heaters as an example .
  • Figures 1 to 4 are embodiments of the burner provided by this application.
  • the burner provided by the present application includes a casing 1, a premixer 2, a preheating burner 3, and an injection pipe 4, wherein the casing 1 is formed with a combustion chamber 11; the premixer 2 is used for Connecting gas and air for pre-mixing, and supplying the mixed gas to the combustion chamber 11; the preheating burner 3 is used to ignite the mixed gas in the combustion chamber 11 and heating the temperature in the combustion chamber 11 to a preset temperature
  • the intake port of the injection pipe 4 communicates with the premixer 2, and the injection port 41 of the injection pipe 4 communicates with the combustion chamber 11 for injecting mixed gas to the combustion chamber 11, so that the combustion chamber 11 carries out a high-temperature air combustion reaction.
  • the main characteristics of high-temperature air combustion are: chemical reactions need to occur in a high-temperature and low-oxygen environment, the temperature of the reactants is higher than its auto-ignition temperature, and the maximum temperature rise during the combustion process is lower than its auto-ignition temperature, and the oxygen volume fraction is diluted by the combustion products to Very low concentration.
  • the pyrolysis of the fuel is suppressed, the thickness of the flame becomes thicker, and the front face of the flame disappears, so that the temperature in the entire furnace is very uniform, the combustion peak temperature is low, and the noise is extremely low, and The pollutant NOx and CO emissions are greatly reduced.
  • the premixer 2 is used to connect and premix the gas and external air to form a more uniform gas and air mixed gas; part of the mixed gas enters the combustion chamber 11 to preheat the burner 3.
  • the mixed gas in the combustion chamber 11 is ignited, so that the mixed gas is burned and a high temperature is formed in the area, so that the air entering the combustion chamber 11 can be preheated at a high temperature to form high-temperature flue gas.
  • the air in the combustion chamber 11 can be heated to the target temperature, that is, the aforementioned preset temperature, so that high-temperature preheating of the air is realized.
  • the other part of the mixed gas enters the injection pipe 4, and is injected into the combustion chamber 11 through the injection pipe 4.
  • the mixed gas enters the combustion chamber 11 and is ignited and continues to burn in the combustion chamber 11 to form an injection combustion area.
  • the mixed gas injected by the set velocity and the high temperature flue gas will cooperate to form an entrainment effect in the combustion chamber 11, forming a flue gas recirculation zone, making part of the high temperature flue gas (rich in N2 and CO2)
  • the exhaust gas circulates and dilutes the reactants in the combustion chamber 11, and then fully dilutes the injected fuel gas and air to form a lower oxygen concentration, reduce the combustion reaction speed, and continue to maintain a higher temperature in the combustion chamber 11 to ensure the combustion chamber
  • the temperature in 11 is higher than the spontaneous ignition point of the fuel to realize spontaneous combustion, thereby realizing high-temperature air combustion.
  • this embodiment uses high-temperature preheating air and high-speed jet to achieve entrainment and dilution of high-temperature flue gas, so that the combustion chamber 11 gas and air are evenly mixed, so that the oxygen concentration in the combustion chamber 11 will also be balanced and lower than A certain value, in this way, not only the gas can be fully burned during combustion, which reduces the emission of pollutants, but also the combustion chamber 11 will burn evenly, and there will be no problem of excessive local combustion and noise.
  • the high-speed jet entrainment also realizes the reflux of high-temperature flue gas, which can keep the temperature of the combustion chamber 11 higher than the spontaneous ignition point of the fuel, and the combustion can be maintained as long as the gas is continuously supplied.
  • the burned heat can be exchanged with the heat exchanger of the gas water heater to realize the production of hot water.
  • the combustion chamber 11 may be provided with a flue gas outlet, and the exhaust gas after combustion is discharged through the flue gas outlet.
  • the target temperature of the high-temperature preheated air should not be too low, and should not be lower than 600 degrees Celsius as much as possible. Generally, it can be controlled at 600 to 1200 degrees Celsius to ensure that when the high-temperature gas comes into contact with the gas in the combustion chamber 11, automatic combustion is achieved and no ignition is required. Ignite. There may be various solutions for realizing high-temperature preheating air, for example, it can be realized by controlling the heating time, controlling the ratio of gas to air, performing heat preservation, and increasing the residence time of the high-temperature gas in the combustion chamber 11.
  • the oxygen concentration in the combustion chamber 12 is lower than 5%-10%. Since the injection speed of the injection pipe 4 is usually determined and set in advance through experiments, it will not change during the subsequent operation of the burner. Therefore, the combustion chamber can be adjusted by adjusting the real-time intake air volume in the combustion chamber 11 The oxygen concentration in 11 then realizes the control of the ratio of fuel gas to air. It is no longer difficult to specifically control the size of the oxygen concentration in the combustion chamber 11, and will not be repeated here. The size of the oxygen concentration in the combustion chamber 11 can be controlled according to the size of the combustion chamber 11 and the speed of control injection.
  • the preheating burner 3 ignites and burns the mixed gas to achieve high-temperature preheating of air, and then passes through the injection pipe 4
  • the injected mixed gas cooperates to produce an entrainment effect, which makes high-temperature flue gas return.
  • it achieves heat preservation so that the temperature is higher than the spontaneous ignition point of the fuel, so that the gas in the combustion chamber 11 can spontaneously ignite;
  • the oxygen concentration is lower than a certain value, uniform combustion is realized, and in this way, high-temperature air combustion occurs in the combustion chamber 11.
  • the technical solution of this embodiment is beneficial for achieving these two conditions at the same time, and smoothly achieving high-temperature air combustion.
  • the structure of this burner frame can miniaturize the components that realize high-temperature air combustion, so that it has more application space and value.
  • it has low noise, sufficient combustion, and low exhaust gas pollution. It is used in gas water heaters and Including gas wall-hung boilers and other related products and equipment that use gas combustion to generate high-temperature hot water for household bathing and heating, they not only meet the requirements, but also bring sufficient and low combustion that the burners of existing water heaters do not have. The effect of pollutant discharge.
  • the preheating combustor 3 has a mixed gas distribution chamber 31, the air inlet of the mixed gas distribution chamber 31 is in communication with the premixer 2, and the air outlet of the mixed gas distribution chamber 31 is in communication with the combustion chamber 11.
  • the mixed gas distribution chamber 31 receives a mixed gas of air and fuel gas from the premixer 2 and discharges the mixed gas to the combustion chamber 11.
  • the above-mentioned preheating burner 3 may be a fully premixed burner for fully and uniformly mixing and burning air and gas.
  • the premixer 2 includes a casing 21 and a fan 24, wherein the casing 21 is formed with an air inlet duct 22, a gas flow duct 23, and a mixing channel (not shown in the drawings). One end of the mixing duct is connected with the air inlet duct 22 and The gas flow passages 23 are respectively connected, and the other end of the mixing passage constitutes the air outlet of the premixer 2; the fan 24 is arranged in the mixing passage for premixing the gas and air.
  • the premixer 2 can be installed separately from the casing 1 of the combustor. Specifically, the premixer 2 can be installed on the casing 1 by means of screw fixing, snap fixing, or adsorption fixing.
  • the fan 24 can be used to adjust the flow rate and flow rate of air and gas in the mixing channel.
  • valve body components (not shown in the drawings) can be provided in the air inlet duct 22, the gas flow passage 23 and/or the mixing channel, and the flow of air, gas, and/or mixed gas can be adjusted by controlling the operation of the valve body component. , The adjustment of the ratio of fuel gas to air in the mixed gas entering the mixed gas distribution chamber 31 is realized.
  • the preheating combustor 3 includes a casing 32 forming a mixed gas distribution chamber 31, a combustion assembly 33 provided at the outlet of the mixed gas distribution chamber 31, and an ignition provided in the combustion chamber 11 for igniting the combustion assembly 33 ⁇ 34 ⁇ Device 34.
  • the mixed gas distribution chamber 31 provides enough space for the mixed gas to be fully mixed, and it also helps to smooth the flow rate of the mixed gas, so that the mixed gas can circulate to the combustion assembly 33 in a uniform and stable state to achieve sufficient and stable combustion; combustion assembly 33 is used to support the continuous combustion of the mixed gas;
  • the ignition device 34 may be, for example, an electronic igniter or an electric heating wire, which will not be described in detail here. It should be noted that the ignition device 34 is arranged closer to the combustion assembly 33, so that the mixed gas entering the combustion chamber 11 from the mixed gas distribution chamber 31 can be quickly ignited without loss.
  • the combustion assembly 33 includes a plate-shaped body and a plurality of air passage holes arranged through the thickness direction of the plate-shaped body.
  • a plurality of gas passage holes are used for the mixed gas to pass through, and dispersed into the combustion chamber 11, which is ignited by the ignition device 34 and continues to burn.
  • the arrangement of the multiple air holes on the plate-shaped body is not limited, and it can be randomly dispersed arrangement, array arrangement or radial arrangement, etc., to ensure uniform combustion.
  • the plate-shaped body is convexly formed in a groove shape toward the direction of the combustion chamber 11.
  • the groove-shaped plate-shaped body can gather enough mixed gas, so that the mixed gas stays at the groove of the plate-shaped body and is easier to fully burn.
  • the preheating burner 3 can be integrally formed with the casing 1, or can be installed separately from the casing 1. Wherein, when the preheating burner 3 and the casing 1 are installed separately, the preheating burner 3 can be accommodated in In the housing 1, as in this embodiment, the housing 1 is provided with an opening at one end;
  • the installation method between the preheating burner 3 and the casing 1 can be snap fixing, screw fixing, adsorption fixing or adhesive fixing to ensure that the structure between the preheating burner 3 and the casing 1 is independent and easier to match.
  • the preheating burner 3 and the casing 1 can be disassembled and replaced, which is convenient for the maintenance of the burner.
  • the plate-shaped body is limited to be located between the outer shell 32 of the preheating burner 3 and the shell 1. It can be understood that the outer peripheral side of the plate-shaped body is clamped between the outer shell 32 of the preheating burner 3 and the port edge of the housing 1, which helps to strengthen the plate-shaped body, the preheating burner 3 and the housing 1. The connection strength between them is also convenient for the disassembly and assembly of the three.
  • the burner further includes a flame induction device, which is arranged in the combustion chamber 11 and is close to the preheating burner 3.
  • the flame induction device is used to detect whether the preheating burner 3 is in a burning state. , And when it is detected that it is not in the burning state, the preheating burner 3 is controlled to re-ignite.
  • the combustion status of the combustion assembly 33 can be monitored in real time.
  • the combustion status is, for example, the size of the combustion flame, the combustion range, and the combustion temperature, which helps to determine whether the combustion status is abnormal in time and ensure that the burner 3 is preheated.
  • the normal operation of the combustion chamber and helps to ensure the MILD combustion quality in the combustion chamber 11.
  • the burner further includes a temperature measuring device 35, which is provided in the combustion chamber 11, and the temperature measuring device 35 is used for detecting Whether the temperature in the combustion chamber 11 reaches the preset target temperature.
  • the burner may be additionally provided with a control device, which may be independent of the control system of the gas water heater or form a part of the control system of the gas water heater.
  • the control device of the burner can be electrically connected with the flame sensing device, the ignition device 34 and the temperature measuring device 35 in the above embodiment, so as to be able to automatically control the flame sensing device, the ignition device 34 and the temperature measuring device 35, etc.
  • the intelligence of the burner may be a control chip or a control circuit, which will not be repeated here.
  • the temperature measuring device 35 is arranged close to the flue gas outlet. It is helpful to prevent the measurement result of the temperature measuring device 35 from being affected by the combustion assembly 33 or the ignition device 34, and improve the accuracy of the sensing result.
  • the air intake of the combustion chamber 11 or the gas and the gas entering the combustion chamber 11 can be preheated by the combustor 3 The air ratio is adjusted.
  • the temperature of the gas in the combustion chamber 11 reaches the target temperature, it means that the combustion in the combustion chamber 11 is normal, which can ensure the full progress of the MILD combustion in the combustion chamber 11 and ensure low CO&NOX emissions during the entire combustion process.
  • the temperature of the high-temperature preheated air can also be controlled by means of heat preservation.
  • a heat insulation layer 7 can be provided on the inner wall of the combustion chamber 11.
  • the heat insulation layer 7 can effectively prevent the wall of the combustion chamber 11 from exchanging heat with the environment outside the combustion chamber 11, resulting in a decrease in the temperature in the combustion chamber 11, and helps to control the temperature of the high-temperature preheated air to reach the target temperature. Due to the thermal insulation effect of the thermal insulation layer 7, overheating of the casing 1 or heat transfer to the outside is avoided, which affects the life of external devices and reduces the fuel utilization efficiency.
  • the second condition for satisfying the MILD combustion is to perform a high-speed jet of the gas in the combustion chamber 11 to cooperate with the high-temperature preheated air to form an entrainment effect.
  • the injection pipe 4 circulates the mixed gas discharged from the premixer 2.
  • the air inlet of the injection pipe 4 can be directly connected to the air outlet of the premixer 2, or can be connected to the mixed gas distribution
  • the chamber 31 is close to its air inlet; the injection port 41 of the injection pipe 4 is provided on the side of the combustion chamber 11, so that the mixed gas circulating through the injection pipe 4 can enter the combustion chamber 11 through the injection port 41, enhancing the combustion of the flue gas
  • the circulation in the chamber 11 returns.
  • a nozzle structure can be provided at the injection port 41.
  • the nozzle structure has a channel section, which is arranged in a reduced diameter along the same direction of the mixed gas to further accelerate the entry of the mixed gas into the combustion.
  • the speed of room 11 is arranged on the side of the combustion chamber 11, which helps to extend the circulation time of the mixed gas in the combustion chamber 11 and improve the heat preservation effect of the combustion chamber 11.
  • multiple injection ports 41 of the injection pipe 4 are arranged at intervals along the circumference of the combustion chamber 11, so that the gas in the combustion chamber 11 can be jetted at a high speed from multiple directions, so that more smoke can flow in
  • the combustion chamber 11 circulates intensively, and then fully dilutes the gas in the combustion chamber 11 to form a lower oxygen concentration, reduce the combustion reaction speed, and maintain a higher temperature in the combustion chamber 11 to ensure that the temperature in the combustion chamber 11 is high
  • self-ignition point of the fuel self-ignition is realized and the MILD combustion in the combustion chamber 11 is fully carried out.
  • the injection pipe 4 is arranged such that the gas injected through the injection port 41 is swirled in the combustion chamber 11, and the gas can drive the flue gas in the combustion chamber 11 to circulate in a swirling shape. It helps to extend the return path of the flue gas in the combustion chamber 11, enhance the circulation and return effect of the flue gas in the combustion chamber 11, and achieve good heat preservation in the combustion chamber 11. It is understandable that there are many technical solutions for achieving the swirling shape of the gas injected from the injection port 41 in the combustion chamber 11. For example, the gas is periodically injected through the injection port 41 to enter the combustion chamber through the injection port 41.
  • the gas in 11 flows periodically to produce a pressure difference in the combustion chamber 11 to form a swirling airflow; or, by providing the injection pipe 4 with a plurality of injection ports 41, and the plurality of injection ports 41 are substantially along an annular plane
  • the outer circumference of each injection port 41 is arranged at intervals, and the orientation of each injection port 41 is approximately arranged in the tangential direction of the annular outer circumference at the position, so that the gas entering the combustion chamber 11 through the plurality of injection ports 41 circulates along a spiral path.
  • the spray tube 4 is separately arranged on the outside of the housing 1.
  • the installation method between the spray tube 4 and the casing 1 can be snap-fitting, screw fixing, suction fixing or adhesive fixing to ensure that the structure between the spray tube 4 and the casing 1 is independent and easier to spray Pipe 4 for maintenance.
  • a sealing member 5 is provided at the connection between the spray tube 4 and the casing 1.
  • the sealing member 5 is used to realize a sealed connection between the injection pipe 4 and the casing 1 to avoid gas leakage in the injection pipe 4 and the combustion chamber 11; The gasket at the place.
  • the air inlet of the injection pipe 4 can be connected to the premixer 2, the preheating burner 3, or the housing 1, the seal 5 can also be correspondingly arranged on the injection pipe 4 and the premixer.
  • the connection between the heater 2, the preheating burner 3 or the casing 1 is the same as the above, and will not be repeated here.
  • the combustor further includes a flow guide 6 which is used to guide the mixed gas discharged from the premixer 2 to the outlet of the mixed gas distribution chamber 31 and the inlet of the injection pipe 4 respectively.
  • the deflector 6 is used to distribute the mixed gas discharged from the premixer 2 to the mixed gas distribution chamber 31 and the injection pipe 4; and, by setting the shape and installation position of the deflector 6 specifically, the mixed gas can be adjusted to enter the mixing
  • the specific flow rate of the gas distribution chamber 31 and the injection pipe 4 for example, can be adjusted by setting the amount of shielding of the flow guide 6 to the outlet of the mixed gas distribution chamber 31 and the amount of shielding of the inlet of the injection pipe 4
  • the gas flows to the air outlet of the mixed gas distribution chamber 31 and the flow rate of the air inlet of the injection pipe 4, thereby adjusting the ratio of primary combustion and secondary combustion in the combustion chamber 11 to achieve different combustion effects.
  • the air outlet of the premixer 2 directly communicates with the air inlet of the mixed gas distribution chamber 31, so that The mixed gas discharged from the premixer 2 all enters the mixed gas distribution chamber 31;
  • the deflector 6 is a deflector suspended in the mixed gas distribution chamber 31, the deflector and the air inlet of the mixed gas distribution chamber 31 Relative settings.
  • the mixed gas discharged from the premixer 2 enters the air inlet of the mixed gas distribution chamber 31, it is divided by the baffle and enters the injection pipe 4 located on the side of the mixed gas distribution chamber 31 and the mixed gas distribution chamber. 31's air outlet.
  • the present application also provides a gas water heater.
  • the gas water heater includes a heat exchanger and the burner as described above.
  • the gas water heater also includes a main body 8.
  • the main body 8 is provided with a heat exchange chamber 81 and a communication device connected to the heat exchanger.
  • the smoke exhaust port 82, the heat exchanger is arranged in the heat exchange chamber 81, and the flue gas outlet of the combustor is in communication with the heat exchange chamber 81.
  • the heat exchanger is connected to an external water source, such as tap water, and the high-temperature flue gas entering the heat exchange chamber 81 through the flue gas outlet of the burner carries enough heat to continuously exchange heat for the tap water in the heat exchanger, so that the temperature of the tap water rises When needed, hot water is prepared.
  • an external water source such as tap water
  • the combustion chamber 11 may be provided separately from the heat exchange chamber 81 or may be integrally provided with the heat exchange chamber 81.
  • the heat exchanger can be directly arranged in the combustion chamber 11, and as far as possible from the gas outlet of the mixed gas distribution chamber 31, so that the heat exchanger can be installed in the combustion chamber 11.
  • the intensely circulating flue gas directly exchanges heat to the heat exchanger.
  • the main body 8 may also be provided with a water collecting tank 83 communicating with the heat exchange chamber 81 to collect the condensed water generated during the heat exchange process of the high temperature flue gas to the heat exchanger.

Abstract

Sont divulgués un brûleur et un chauffe-eau à gaz. Le brûleur comprend un boîtier, un prémélangeur, un brûleur de préchauffage et un tuyau d'éjection, le boîtier étant pourvu d'une chambre de combustion ; le prémélangeur est raccordé à un gaz combustible et à de l'air et réalise un prémélange sur ceux-ci et fournit un gaz mixte à la chambre de combustion ; le brûleur de préchauffage est conçu pour allumer le gaz mixte ; une entrée de gaz du tuyau d'éjection est en communication avec le prémélangeur et la température dans la chambre de combustion est chauffée à une température prédéfinie ; et un orifice d'éjection du tuyau d'éjection est en communication avec la chambre de combustion et est conçu pour éjecter le gaz mixte dans la chambre de combustion, de sorte qu'une réaction de combustion d'air à haute température soit réalisée au sein de la chambre de combustion. L'invention concerne un brûleur ayant une fonction de combustion d'air à haute température et un chauffe-eau à gaz.
PCT/CN2021/097444 2019-10-17 2021-05-31 Brûleur et chauffe-eau à gaz WO2021244493A1 (fr)

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112682788B (zh) * 2019-10-17 2022-12-02 芜湖美的厨卫电器制造有限公司 燃烧器及燃气热水器
WO2023274381A1 (fr) * 2021-06-30 2023-01-05 芜湖美的厨卫电器制造有限公司 Ensemble chambre de combustion et dispositif de chauffe-eau au gaz
CN115560467A (zh) * 2021-06-30 2023-01-03 芜湖美的厨卫电器制造有限公司 燃气热水设备及其控制方法和计算机可读存储介质
WO2023274377A1 (fr) * 2021-06-30 2023-01-05 芜湖美的厨卫电器制造有限公司 Brûleur et dispositif de chauffage d'eau au gaz
CN113339824A (zh) * 2021-07-12 2021-09-03 清远市精旺环保设备有限公司 一种废气用催化燃烧炉
CN113739143B (zh) * 2021-08-19 2024-04-09 江苏大学 一种自适应性旋流预混燃烧器
CN113932217B (zh) * 2021-09-29 2022-07-26 清华大学 带有周向环形预热段的氨燃料旋流燃烧器
CN113959093A (zh) * 2021-09-29 2022-01-21 刘飞 一种燃气热水器
CN114234438A (zh) * 2021-12-23 2022-03-25 阿诗丹顿燃具有限公司 一种强抽型保温燃气热水器
CN115013973B (zh) * 2022-06-02 2023-10-24 西安交通大学 一种全预混水冷燃气锅炉
CN116045275B (zh) * 2023-02-17 2023-11-17 临沂市欧科节能技术有限公司 一种燃烧锅炉装置
CN116817270B (zh) * 2023-08-30 2023-11-21 陕西华秦新能源科技有限责任公司 一种火焰切割的气体分配装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0611117A (ja) * 1992-04-09 1994-01-21 Shell Internatl Res Maatschappij Bv 予備混合した高速燃料噴流の低ＮＯｘバーナ
CN101191616A (zh) * 2006-11-28 2008-06-04 海尔集团公司 蓝火苗燃气热水器的燃气喷嘴及使用该喷嘴的引射装置
CN101650133A (zh) * 2009-09-01 2010-02-17 北京沃克能源科技有限公司 一种实现高温低氧燃烧的烟气能量循环再利用系统
CN103697469A (zh) * 2013-11-20 2014-04-02 西安交通大学 一种煤粉火焰预热低NOx燃烧器系统
WO2018122574A1 (fr) * 2016-12-29 2018-07-05 I.C.I. Caldaie S.P.A. Chaudière de production d'eau chaude ou de vapeur
CN110173887A (zh) * 2019-06-17 2019-08-27 景洪 一种预混低氮燃气容积式热水器及其控制方法
CN110260309A (zh) * 2019-06-06 2019-09-20 华帝股份有限公司 一种空气加热装置及燃气热水器
CN209588356U (zh) * 2018-11-23 2019-11-05 艾欧史密斯(中国)热水器有限公司 燃气热水装置
CN112682792A (zh) * 2019-10-17 2021-04-20 芜湖美的厨卫电器制造有限公司 燃烧器及燃气热水器

Family Cites Families (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833238B2 (ja) * 1987-01-16 1996-03-29 東京瓦斯株式会社 温水ボイラ
JP3311651B2 (ja) * 1997-09-03 2002-08-05 株式会社タクマ サイクロン形燃焼装置
CA2303654C (fr) * 1999-05-12 2008-01-22 State Industries, Inc. Chauffe-eau
US6872070B2 (en) * 2001-05-10 2005-03-29 Hauck Manufacturing Company U-tube diffusion flame burner assembly having unique flame stabilization
US20040234918A1 (en) * 2003-05-22 2004-11-25 Velke William H. Combination of devices operational to increase the efficiency of storage tank or flow-through type waterheaters and hydronic boilers
CN2699145Y (zh) * 2004-05-26 2005-05-11 华南理工大学 高温空气发生器
US20080160467A1 (en) * 2006-01-30 2008-07-03 Noritz Corporation Combustion Apparatus
CN101294706A (zh) * 2007-04-29 2008-10-29 尹华金 燃气灶高效节能高速燃烧器
CA2693624C (fr) * 2007-06-20 2015-08-04 Chiyoda Corporation Reacteur employant la technologie de combustion a l'air haute temperature
JP2010185603A (ja) * 2009-02-12 2010-08-26 Corona Corp 貯湯式給湯機
CN201599793U (zh) * 2009-06-01 2010-10-06 王文庭 砖坯烘干线预混燃气燃烧器
CN101571315B (zh) * 2009-06-16 2012-05-16 艾欧史密斯(中国)热水器有限公司 一种容积式燃气热水器
CN102221207B (zh) * 2011-05-18 2013-08-14 威海正通节能科技有限公司 集热式高效节能燃烧器总成
CH707316A1 (de) * 2012-12-07 2014-06-13 Lianpeng Jing Russgenerator.
KR101428542B1 (ko) * 2013-01-18 2014-08-11 주식회사 경동나비엔 급기 예열기를 구비한 연소장치
CN107448943B (zh) * 2013-02-14 2020-11-06 美一蓝技术公司 穿孔火焰稳定器和包括穿孔火焰稳定器的燃烧器
CN203404974U (zh) * 2013-07-10 2014-01-22 芜湖美的厨卫电器制造有限公司 燃气热水器的热交换器及燃气热水器
CN203501429U (zh) * 2013-09-22 2014-03-26 中山华帝燃具股份有限公司 一种带有水冷换热功能的热水器
CN103574601B (zh) * 2013-11-11 2016-06-22 广东美的厨房电器制造有限公司 预混燃烧器和燃气灶
CN104006528A (zh) * 2014-05-22 2014-08-27 泰州市马恒达机械有限公司 顶置吸气式换热器结构
CN204005999U (zh) * 2014-07-31 2014-12-10 北京科技大学 一种自身预热式辐射管燃烧器
CN104696965B (zh) * 2015-03-23 2017-06-06 华东理工大学 一种直流式弥散燃烧的管式加热炉系统及燃烧器
TWI570369B (zh) * 2015-06-18 2017-02-11 Output heat source temperature controllable combustion device
CN105588323B (zh) * 2016-02-24 2019-03-01 北京东方德泰科技有限公司 燃气热水器
CN205606542U (zh) * 2016-04-14 2016-09-28 中国科学院大连化学物理研究所 一种极低污染物排放的催化无焰燃烧装置
CN205783717U (zh) * 2016-05-13 2016-12-07 芜湖美的厨卫电器制造有限公司 燃气热水器
CN105841340A (zh) * 2016-05-13 2016-08-10 芜湖美的厨卫电器制造有限公司 燃气热水器
CN107448938A (zh) * 2016-06-01 2017-12-08 上海钜荷热力技术有限公司 一种内循环烟气回流式全预混燃烧器
CN106152479A (zh) * 2016-08-26 2016-11-23 芜湖美的厨卫电器制造有限公司 燃气热水器
CN206037389U (zh) * 2016-08-26 2017-03-22 芜湖美的厨卫电器制造有限公司 燃气热水器
CN106440334A (zh) * 2016-10-09 2017-02-22 佛山市顺德区怡成电器有限公司 分段控制的二级换热冷凝式燃气采暖热水炉
CN106595026B (zh) * 2016-10-26 2022-01-28 珠海格力电器股份有限公司 一种燃气壁挂炉、热水供应系统及控制方法
CN206280955U (zh) * 2016-12-19 2017-06-27 郑州釜鼎热能技术有限公司 预混气流引射烟气回流控温与低氮燃烧的燃烧器
CN108006946A (zh) * 2016-12-30 2018-05-08 芜湖美的厨卫电器制造有限公司 燃气热水器和燃气热水器燃烧控制方法
CN206469470U (zh) * 2016-12-30 2017-09-05 芜湖美的厨卫电器制造有限公司 燃气热水器
CN106766141A (zh) * 2016-12-31 2017-05-31 浙江音诺伟森热能科技有限公司 一种冷凝式燃气采暖热水炉
CN106871445A (zh) * 2017-03-09 2017-06-20 广东万家乐燃气具有限公司 一种带烟气循环系统的燃气热水器
CN108662782A (zh) * 2017-03-30 2018-10-16 芜湖美的厨卫电器制造有限公司 燃烧换热系统和具有其的燃气热水器
CN107238196A (zh) * 2017-07-14 2017-10-10 童红妃 一种热媒循环式供热机
CN207196910U (zh) * 2017-08-31 2018-04-06 芜湖美的厨卫电器制造有限公司 一种燃气热水器
CN109425099B (zh) * 2017-08-31 2024-02-20 芜湖美的厨卫电器制造有限公司 一种燃气热水器
CN207247205U (zh) * 2017-10-12 2018-04-17 重庆赛迪热工环保工程技术有限公司 一种自身预热式高速烧嘴
CN207975831U (zh) * 2017-10-13 2018-10-16 广东诺科冷暖设备有限公司 一种燃气采暖热水炉的低排放燃烧结构
CN109695955A (zh) * 2017-10-24 2019-04-30 芜湖美的厨卫电器制造有限公司 燃气热水器
CN207350776U (zh) * 2017-10-24 2018-05-11 芜湖美的厨卫电器制造有限公司 燃气热水器
CN109708299A (zh) * 2017-10-25 2019-05-03 芜湖美的厨卫电器制造有限公司 燃气热水器
CN207455592U (zh) * 2017-10-31 2018-06-05 芜湖美的厨卫电器制造有限公司 混气结构和燃气热水器
CN109724085B (zh) * 2017-10-31 2024-02-23 芜湖美的厨卫电器制造有限公司 混气结构和燃气热水器
CN108302536B (zh) * 2018-01-05 2018-12-28 考克兰（江苏）热能设备有限公司 低氮燃烧器
CN110094872A (zh) * 2018-01-31 2019-08-06 芜湖美的厨卫电器制造有限公司 燃气热水器
CN207881201U (zh) * 2018-02-10 2018-09-18 芜湖美的厨卫电器制造有限公司 燃气热水器
CN208090966U (zh) * 2018-03-07 2018-11-13 广东万和新电气股份有限公司 一种用于燃气热水器的空气进气冷却结构及燃气热水器
CN108954799B (zh) * 2018-08-13 2024-02-23 芜湖美的厨卫电器制造有限公司 燃烧换热装置、燃气壁挂炉和燃气热水器
CN109612077A (zh) * 2018-10-22 2019-04-12 中山市恒乐电器有限公司 恒温燃气热水器及其控制方法
CN109307270B (zh) * 2018-11-04 2023-09-12 佛山市科皓燃烧设备制造有限公司 一种内部烟气回流低NOx自身预热式烧嘴
CN109489035A (zh) * 2018-12-28 2019-03-19 中冶京诚(扬州)冶金科技产业有限公司 一种低NOx排放燃烧器

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0611117A (ja) * 1992-04-09 1994-01-21 Shell Internatl Res Maatschappij Bv 予備混合した高速燃料噴流の低ＮＯｘバーナ
CN101191616A (zh) * 2006-11-28 2008-06-04 海尔集团公司 蓝火苗燃气热水器的燃气喷嘴及使用该喷嘴的引射装置
CN101650133A (zh) * 2009-09-01 2010-02-17 北京沃克能源科技有限公司 一种实现高温低氧燃烧的烟气能量循环再利用系统
CN103697469A (zh) * 2013-11-20 2014-04-02 西安交通大学 一种煤粉火焰预热低NOx燃烧器系统
WO2018122574A1 (fr) * 2016-12-29 2018-07-05 I.C.I. Caldaie S.P.A. Chaudière de production d'eau chaude ou de vapeur
CN209588356U (zh) * 2018-11-23 2019-11-05 艾欧史密斯(中国)热水器有限公司 燃气热水装置
CN110260309A (zh) * 2019-06-06 2019-09-20 华帝股份有限公司 一种空气加热装置及燃气热水器
CN110173887A (zh) * 2019-06-17 2019-08-27 景洪 一种预混低氮燃气容积式热水器及其控制方法
CN112682792A (zh) * 2019-10-17 2021-04-20 芜湖美的厨卫电器制造有限公司 燃烧器及燃气热水器
CN112682786A (zh) * 2019-10-17 2021-04-20 芜湖美的厨卫电器制造有限公司 燃烧器及燃气热水器
CN112682788A (zh) * 2019-10-17 2021-04-20 芜湖美的厨卫电器制造有限公司 燃烧器及燃气热水器

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