CN117053193A - Hot air burner and hot air combustion system - Google Patents
Hot air burner and hot air combustion system Download PDFInfo
- Publication number
- CN117053193A CN117053193A CN202311122159.6A CN202311122159A CN117053193A CN 117053193 A CN117053193 A CN 117053193A CN 202311122159 A CN202311122159 A CN 202311122159A CN 117053193 A CN117053193 A CN 117053193A
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- Prior art keywords
- combustion
- channel
- burner
- air inlet
- supporting air
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 102
- 239000002737 fuel gas Substances 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 32
- 230000000087 stabilizing effect Effects 0.000 claims description 31
- 238000005192 partition Methods 0.000 claims description 21
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 14
- 230000010354 integration Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000003381 stabilizer Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- 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
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
- F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
-
- 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
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
-
- 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
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- 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
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
-
- 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
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0488—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using fluid fuel
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Gas Burners (AREA)
Abstract
The invention discloses a hot air burner, which comprises a burner shell, wherein an outer flame tube is arranged at the rear end of the burner shell; a combustion-supporting air main channel is arranged in the combustor shell, a fuel gas supply channel is arranged in the combustion-supporting air main channel, fuel gas spray holes are formed in the rear end of the fuel gas supply channel at intervals along the circumferential direction, an ignition needle is arranged at the rear end of the fuel gas supply channel, a central flame stabilizer is arranged at the rear end of the combustion-supporting air main channel, and a flaring inner flame tube is arranged at a channel opening at the rear end of the combustion-supporting air main channel; a combustion-supporting air inlet channel and a mixed air inlet channel are arranged between the burner shell and the combustion-supporting air main channel, a combustion-supporting air inlet and a mixed air inlet are arranged on the side wall of the burner shell, and a plurality of combustion-supporting air inlet holes are arranged in the circumferential direction of the combustion-supporting air main channel; the back channel port of the mixed air inlet channel is provided with a swirl vane, and the side wall of the flame tube in the flaring is provided with a plurality of mixed air inlet holes along the circumferential direction. The invention has the advantages of realizing effective integration of combustion and mixed cooling and providing hot air with uniform temperature.
Description
Technical Field
The invention relates to the technical field of hot air heating equipment, in particular to a hot air burner and a hot air combustion system.
Background
At present, hot air is used as an electrical heat source and a traditional steam power heat source of various industries, and the heat utilization rate and the heat working effect can be greatly improved by using the hot air as a heat exchange medium or carrier.
The hot air combustion system is a main device for providing hot air as a heat exchange medium, and is widely applied to industries such as agricultural production, farm production, food processing, metallurgy, building materials and the like, and is also used for heating various rooms besides drying various materials, such as heating of a greenhouse, heating of the indoor winter and the like.
Unlike a typical recuperator, a hot air combustion system must include two sections, one being a combustion section, where the combustion section refers to the combustion of fuel, and the other being a hybrid cooling section, where the hybrid cooling section refers to the heat exchange of the combustion products with air. The working process of the hot air combustion system is as follows: the high-temperature combustion gas obtained after the fuel is combusted and reacted further contacts with external air, and after the high-temperature combustion gas is mixed to a certain temperature, hot air with a certain heat source is directly provided for the back-end device.
In the conventional hot air combustion system, the combustion part and the mixed cooling part are separately and independently designed, resulting in the following problems of the hot air combustion system: the structure and the technological process are complex, the equipment manufacturing, installation and maintenance cost is high, and the temperature of the outlet hot air is uneven.
Aiming at the problems, a novel hot air system is developed, and the hot air system has great economic benefit and social significance.
Disclosure of Invention
A first object of the present invention is to provide a hot air burner capable of achieving efficient integration of combustion and hybrid cooling, ensuring stable combustion, and providing hot air having a uniform temperature.
In order to achieve the above purpose, the invention adopts the following technical scheme: a hot air burner comprises a burner shell, wherein the front end of the burner shell is closed, the rear end of the burner shell is open, and an outer flame tube used for being inserted into a furnace wall of a combustion chamber is arranged at the open end pair of the burner shell; a combustion air main channel with an open rear end and extending backwards into the outer flame tube is arranged in the combustor shell, a gas supply channel which is relatively independent of the combustion air main channel is coaxially arranged in the combustion air main channel, the front end of the gas supply channel extends forwards and penetrates through the front wall of the combustor shell to form a gas supply inlet, the rear end of the gas supply channel is sealed and extends backwards to the rear end of the combustion air main channel, a plurality of gas spray holes are circumferentially arranged on the side wall of the rear end channel of the gas supply channel at intervals, a gas head spray gun is arranged at each gas spray hole, and an ignition needle is arranged at the gas head spray gun; a central flame holder positioned behind the fuel gas supply channel is arranged at the rear end channel port of the combustion air main channel, and a flaring inner flame tube with the caliber gradually increasing from front to back is arranged at the rear end channel port of the combustion air main channel in a butt joint manner; a partition plate is arranged between the burner shell and the combustion-supporting air main channel, the partition plate, the side wall of the burner shell in front of the partition plate and the side wall of the combustion-supporting air main channel in front of the partition plate jointly form a combustion-supporting air inlet channel arranged around the combustion-supporting air main channel, combustion-supporting air inlets are arranged on the side wall of the burner shell corresponding to the combustion-supporting air inlet channel, and a plurality of combustion-supporting air inlet holes which are used for communicating the combustion-supporting air inlet channel with the combustion-supporting air main channel are arranged on the side wall of the combustion-supporting air main channel corresponding to the combustion-supporting air inlet channel along the circumferential direction at intervals; the burner comprises a partition plate, a burner housing side wall behind the partition plate, a combustion-supporting air main channel side wall behind the partition plate, an outer flame tube and a flaring inner flame tube, wherein a rear-end open mixed air inlet channel arranged around the combustion-supporting air main channel is formed together, a mixed air inlet is formed in the burner housing side wall corresponding to the mixed air inlet channel, swirl vanes are arranged at rear-end channel openings of the mixed air inlet channel, and mixed air inlet holes are formed in the flaring inner flame tube side wall at the front side of the swirl vanes along the circumferential direction at intervals.
Further, a hot air burner as described above, wherein: the distance between the mixed air inlet hole and the channel port at the rear end of the main combustion-supporting air channel is 30-70 mm.
Further, a hot air burner as described above, wherein: the included angle between the central line of the mixed air inlet hole and the axial line of the combustion-supporting air main channel is 70 degrees.
Further, a hot air burner as described above, wherein: the combustion-supporting air inlet and the mixed air inlet are arranged on the same side of the burner shell.
Further, a hot air burner as described above, wherein: the structure of the central flame holder comprises: the flame stabilizing plate is arranged at the rear end passage port of the combustion-supporting air main passage and is coaxial with the combustion-supporting air main passage, a plurality of circles of flame stabilizing units concentric with the flame stabilizing plate are arranged on the flame stabilizing plate, each circle of flame stabilizing units consists of a plurality of flame stabilizing holes positioned on the same reference circle, and the flame stabilizing Kong Kongshu of the flame stabilizing unit positioned at the outermost circle is larger than the flame stabilizing Kong Kongshu of the rest flame stabilizing units.
Further, a hot air burner as described above, wherein: a circle of mounting flange is arranged outside the burner shell, and when the outer flame tube is inserted into the mounting hole of the front furnace wall of the combustion chamber, the mounting flange is just tightly attached to the front furnace wall of the combustion chamber.
The second object of the present invention is to provide a hot air combustion system which can realize the effective integration of combustion and mixed cooling, ensure stable combustion, provide hot air with uniform temperature, and have low manufacturing cost.
In order to achieve the above purpose, the invention adopts the following technical scheme: a hot air combustion system, wherein: comprises a hot air burner and a combustion chamber built by refractory materials, wherein the hot air burner is fixedly arranged in a mounting hole of a front furnace wall of the burner.
Through implementation of the technical scheme, the invention has the beneficial effects that: (1) The fuel combustion part and the mixed cooling part are integrated on the burner shell, so that the effective integration of the combustion part and the mixed cooling part is realized, the full combustion of fuel is ensured, the heat loss is reduced, and meanwhile, hot air with uniform temperature can be provided, so that the energy-saving and environment-friendly benefits are remarkable; (2) The fuel combustion part and the mixed cooling part are integrated on the burner shell, so that the effective integration of the combustion part and the mixed cooling part is realized, the installation and maintenance cost is relatively low, the service life is long, and the use is convenient; (3) The combustion chamber does not need to be designed in an interlayer mode, a heavy furnace body system is not needed to be provided, the furnace body system is simplified, the manufacture is simple, and the manufacturing cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a hot air burner according to the present invention.
FIG. 2 is a schematic diagram of the positional relationship of the burner housing, outer flame tube, swirl vanes, flared inner flame tube, and central flame holder in the left view of FIG. 1.
Fig. 3 is an enlarged partial schematic view of the rear end of the gas supply channel.
Fig. 4 is a schematic view of the structure of fig. 1 after the fuel gas supply channel is omitted.
Fig. 5 is a schematic structural view of a hot air combustion system.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1, 2, 3 and 4, the hot air burner comprises a burner housing 1, wherein the front end of the burner housing 1 is closed, the rear end of the burner housing is open, and an outer flame tube 2 for being inserted into a furnace wall of a combustion chamber is arranged at the open end of the burner housing 1; a combustion air main channel 3 with an open rear end and extending backwards into the outer flame tube 2 is arranged in the combustor casing 1, a gas supply channel 4 which is relatively independent of the combustion air main channel 3 is coaxially arranged in the combustion air main channel 3, the front end of the gas supply channel 4 extends forwards and penetrates through the front wall of the combustor casing to form a gas supply inlet 5, the rear end of the gas supply channel 4 is sealed and extends backwards to the rear end of the combustion air main channel 3, a plurality of gas spray holes 20 are circumferentially and alternately arranged on the side wall of the rear end channel of the gas supply channel 4, a gas head spray gun 6 is arranged at each gas spray hole 20, and an ignition needle 24 is arranged at the gas head spray gun 6, so that the gas introduced into the gas supply channel 4 can enter the combustion air main channel 3 from each gas spray hole 20 and each gas head spray gun 6, and is uniformly mixed with the combustion air in the combustion air main channel 3, and stable and complete combustion is realized; a central flame stabilizer 7 positioned behind the fuel gas supply channel 4 is arranged at the rear end channel port of the combustion air main channel 3, and a flaring inner flame tube 8 with the caliber gradually increasing from front to back is arranged at the rear end channel port of the combustion air main channel 3 in a butt joint manner; a partition plate 9 is arranged between the burner housing 1 and the combustion-supporting air main channel 3, the partition plate 9, the side wall of the burner housing 1 in front of the partition plate 9 and the side wall of the combustion-supporting air main channel 3 in front of the partition plate 9 jointly form a combustion-supporting air inlet channel 10 arranged around the combustion-supporting air main channel 3, combustion-supporting air inlets 11 are arranged on the side wall of the burner housing 1 corresponding to the combustion-supporting air inlet channel 10, and a plurality of combustion-supporting air inlet holes 12 which are used for communicating the combustion-supporting air inlet channel 10 with the combustion-supporting air main channel 3 are arranged on the side wall of the combustion-supporting air main channel 3 corresponding to the combustion-supporting air inlet channel 10 along the circumferential direction at intervals; the burner comprises a partition plate 9, a side wall of a burner housing 1 behind the partition plate 9, a side wall of a combustion-supporting air main channel 3 behind the partition plate 9, an outer flame tube 2 and a flaring inner flame tube 8, wherein a mixed air inlet channel 13 with an open rear end is formed around the combustion-supporting air main channel 3, a mixed air inlet 14 is formed in the side wall of the burner housing 1 corresponding to the mixed air inlet channel 13, a swirl vane 15 is arranged in a rear end channel port of the mixed air inlet channel 13, and a plurality of mixed air inlet holes 16 are formed in the side wall of the flaring inner flame tube 8 in the front side of the swirl vane 15 at intervals along the circumferential direction; when the burner works, the mixed air which is introduced into the mixed air inlet channel 13 from the mixed air inlet 14 is divided into two paths, and one path is mixed into the combustion flame 23 from each mixed air inlet hole 16, so that the temperature of a flame combustion area is reduced while the flame stability is not influenced; the other path of the air flow enters the combustion chamber 18 through the accelerating rotation of the cyclone blades 15 to form cyclone air flow, so that the mixed air is uniformly mixed with the combustion flame 23 and cooled while the combustion stability is not affected, and hot air with uniform temperature is formed; meanwhile, as the mixed air inlet channel 13 passes through the flaring inner flame tube 8, in the working process of the burner, the mixed air in the mixed air inlet channel 13 can cool the flaring inner flame tube 8, thereby protecting the flaring inner flame tube 8 and prolonging the service life of the flaring inner flame tube 8;
in the embodiment, the distance L between the mixed air inlet hole 16 and the channel port at the rear end of the combustion air main channel 3 is 30-70 mm; the included angle alpha between the central line n of the mixed air inlet hole 16 and the axial line m of the combustion air main channel 3 is 70 degrees; in the present embodiment, the combustion air inlet 11 and the mixed air inlet 14 are arranged on the same side of the burner housing 1, which is beneficial to the arrangement of on-site combustion air pipelines and the improvement of the adjustability of the combustion air and the mixed air; in the embodiment, a circle of mounting flange 21 is arranged outside the burner housing 1, and when the outer flame tube 2 is inserted into the mounting hole of the front furnace wall of the combustion chamber, the mounting flange 21 is just tightly attached to the front furnace wall 19 of the combustion chamber, so that the hot air burner can be more conveniently mounted on the combustion chamber 18;
in the present embodiment, the structure of the center flame holder 7 includes: the flame stabilizing plate 71 is arranged at the rear end passage port of the combustion-supporting air main passage 3 and is coaxial with the combustion-supporting air main passage, a plurality of rings of flame stabilizing units concentric with the flame stabilizing plate are arranged on the flame stabilizing plate 71, each ring of flame stabilizing units consists of a plurality of flame stabilizing holes 72 positioned on the same reference circle, and the flame stabilizing Kong Kongshu of the flame stabilizing unit positioned at the outermost ring is larger than the flame stabilizing Kong Kongshu of the rest flame stabilizing units; thus, the flame combustion stability can be better ensured;
as shown in fig. 5, a hot air combustion system comprises a hot air burner and a combustion chamber 18 built by refractory materials 22, wherein a burner mounting hole is arranged on a front furnace wall 19 of the combustion chamber 18, and the hot air burner 17 is fixedly arranged in the burner mounting hole.
The working principle of the invention is as follows:
introducing fuel gas into the fuel gas supply channel 4 from the fuel gas supply inlet 5, introducing combustion-supporting air into the combustion-supporting air inlet channel 10 from the combustion-supporting air inlet 1, and introducing mixed air into the mixed air inlet channel 13 from the mixed air inlet 14;
the combustion air entering the combustion air inlet channel 10 enters the combustion air main channel 3 from each combustion air inlet hole 12 and moves towards the rear end channel opening along the combustion air main channel 3, meanwhile, the fuel gas entering the fuel gas supply channel 4 enters the combustion air main channel 3 from each fuel gas spray hole 20 and each fuel gas head spray gun 6, so that the rear end of the combustion air main channel 3 and the combustion air entering the combustion air main channel 3 are uniformly mixed, and simultaneously, an ignition needle 24 fires against the side wall of the fuel gas supply channel 4 to ignite fuel gas to form flame 23, and after the flame 23 is stabilized through each flame stabilizing hole 72 of the central flame stabilizer 7, stable combustion flame 23 is formed and is sprayed into the combustion chamber 18 from the flaring inner flame tube 8;
in the process that flame is sprayed into the combustion chamber 18 from the flaring inner flame tube 8, mixed air flowing into the mixed air inlet channel 13 can be divided into two paths, and one path is mixed into the combustion flame 23 from each mixed air inlet hole 16, so that the temperature of a flame combustion area is reduced while the flame stability is not influenced; the other path of the air flow enters the combustion chamber 18 through the accelerating rotation of the cyclone blades 15 to form cyclone air flow, so that the mixed air and the combustion flame 23 are uniformly mixed in a spreading manner in the cavity of the combustion chamber 18 and cooled while the combustion stability is not affected, and hot air with uniform temperature is formed; meanwhile, as the mixed air inlet channel 13 passes through the flaring inner flame tube 8, in the working process of the burner, the mixed air in the mixed air inlet channel 13 can cool the flaring inner flame tube 8, thereby protecting the flaring inner flame tube 8 and prolonging the service life of the flaring inner flame tube 8; and because the swirl vane 15 accelerates the rotation of the mixed air to form a swirl airflow to enter the combustion chamber 18, under the action of the swirl airflow, the flame in the combustion chamber 18 cannot enter the mixed air inlet channel 13, so that the flame is prevented from entering the mixed air inlet channel 13 to lick the inner wall of the outer flame tube 2 and the outer wall of the flaring inner flame tube 8, the outer flame tube 2 and the flaring inner flame tube 8 are further protected, and the whole service life of the equipment is further prolonged.
The invention has the advantages that: (1) The fuel combustion part and the mixed cooling part are integrated on the burner shell, so that the effective integration of the combustion part and the mixed cooling part is realized, the full combustion of fuel is ensured, the heat loss is reduced, and meanwhile, hot air with uniform temperature can be provided, so that the energy-saving and environment-friendly benefits are remarkable; (2) The fuel combustion part and the mixed cooling part are integrated on the burner shell, so that the effective integration of the combustion part and the mixed cooling part is realized, the installation and maintenance cost is relatively low, the service life is long, and the use is convenient; (3) The combustion chamber does not need to be designed in an interlayer mode, a heavy furnace body system is not needed to be provided, the furnace body system is simplified, the manufacture is simple, and the manufacturing cost is reduced.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the present invention in any other way, but any modifications or equivalent variations according to the technical spirit of the present invention are still included in the scope of the present invention.
Claims (7)
1. A hot air burner, characterized in that: the burner comprises a burner shell, wherein the front end of the burner shell is closed, the rear end of the burner shell is open, and an outer flame tube which is used for being inserted into a front furnace wall mounting hole of a combustion chamber is arranged at the open end of the burner shell; a combustion air main channel with an open rear end and extending backwards into the outer flame tube is arranged in the combustor shell, a gas supply channel which is relatively independent of the combustion air main channel is coaxially arranged in the combustion air main channel, the front end of the gas supply channel extends forwards and penetrates through the front wall of the combustor shell to form a gas supply inlet, the rear end of the gas supply channel is sealed and extends backwards to the rear end of the combustion air main channel, a plurality of gas spray holes are circumferentially arranged on the side wall of the rear end channel of the gas supply channel at intervals, a gas head spray gun is arranged at each gas spray hole, and an ignition needle is arranged at the gas head spray gun; a central flame holder positioned behind the fuel gas supply channel is arranged at the rear end channel port of the combustion air main channel, and a flaring inner flame tube with the caliber gradually increasing from front to back is arranged at the rear end channel port of the combustion air main channel in a butt joint manner; a partition plate is arranged between the burner shell and the combustion-supporting air main channel, the partition plate, the side wall of the burner shell in front of the partition plate and the side wall of the combustion-supporting air main channel in front of the partition plate jointly form a combustion-supporting air inlet channel arranged around the combustion-supporting air main channel, combustion-supporting air inlets are arranged on the side wall of the burner shell corresponding to the combustion-supporting air inlet channel, and a plurality of combustion-supporting air inlet holes which are used for communicating the combustion-supporting air inlet channel with the combustion-supporting air main channel are arranged on the side wall of the combustion-supporting air main channel corresponding to the combustion-supporting air inlet channel along the circumferential direction at intervals; the burner comprises a partition plate, a burner housing side wall behind the partition plate, a combustion-supporting air main channel side wall behind the partition plate, an outer flame tube and a flaring inner flame tube, wherein a rear-end open mixed air inlet channel arranged around the combustion-supporting air main channel is formed together, a mixed air inlet is formed in the burner housing side wall corresponding to the mixed air inlet channel, swirl vanes are arranged at rear-end channel openings of the mixed air inlet channel, and mixed air inlet holes are formed in the flaring inner flame tube side wall at the front side of the swirl vanes along the circumferential direction at intervals.
2. A hot air burner according to claim 1, wherein: the distance between the mixed air inlet hole and the channel port at the rear end of the main combustion-supporting air channel is 30-70 mm.
3. A hot air burner according to claim 1, wherein: the included angle between the central line of the mixed air inlet hole and the axial line of the combustion-supporting air main channel is 70 degrees.
4. A hot air burner according to claim 1, wherein: the combustion-supporting air inlet and the mixed air inlet are arranged on the same side of the burner shell.
5. A hot air burner according to claim 1 or 2 or 3 or 4, characterized in that: the structure of the central flame holder comprises: the flame stabilizing plate is arranged at the rear end passage port of the combustion-supporting air main passage and is coaxial with the combustion-supporting air main passage, a plurality of circles of flame stabilizing units concentric with the flame stabilizing plate are arranged on the flame stabilizing plate, each circle of flame stabilizing units consists of a plurality of flame stabilizing holes positioned on the same reference circle, and the flame stabilizing Kong Kongshu of the flame stabilizing unit positioned at the outermost circle is larger than the flame stabilizing Kong Kongshu of the rest flame stabilizing units.
6. A hot air burner according to claim 1 or 2 or 3 or 4, characterized in that: a circle of mounting flange is arranged outside the burner shell, and when the outer flame tube is inserted into the mounting hole of the front furnace wall of the combustion chamber, the mounting flange is just tightly attached to the front furnace wall of the combustion chamber.
7. A hot air combustion system, characterized by: comprising the hot air burner according to any one of claims 1 to 6, and a combustion chamber built of refractory material, the hot air burner being fixedly mounted in a mounting hole of a burner front furnace wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311122159.6A CN117053193A (en) | 2023-09-01 | 2023-09-01 | Hot air burner and hot air combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311122159.6A CN117053193A (en) | 2023-09-01 | 2023-09-01 | Hot air burner and hot air combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117053193A true CN117053193A (en) | 2023-11-14 |
Family
ID=88657144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311122159.6A Pending CN117053193A (en) | 2023-09-01 | 2023-09-01 | Hot air burner and hot air combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117053193A (en) |
-
2023
- 2023-09-01 CN CN202311122159.6A patent/CN117053193A/en active Pending
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