CN107741014B - Gas-air mixer of full-premix gas burner - Google Patents
Gas-air mixer of full-premix gas burner Download PDFInfo
- Publication number
- CN107741014B CN107741014B CN201711117031.5A CN201711117031A CN107741014B CN 107741014 B CN107741014 B CN 107741014B CN 201711117031 A CN201711117031 A CN 201711117031A CN 107741014 B CN107741014 B CN 107741014B
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- gas
- inlet pipe
- pipe
- air
- vertical
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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
- F23D14/02—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
- F23D14/06—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 with radial outlets at the burner head
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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
- F23D14/46—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
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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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The invention discloses a gas-air mixer of a full-premix gas burner. Belongs to the technical field of gas equipment. The full-premix gas burner mainly solves the problem that the premixing effect of gas and air is not good enough in the existing full-premix gas burner. The main characteristics of the device are as follows: comprises a gas inlet pipe, a gas distribution plate and a gas mixing and stirring flower plate; the gas inlet pipe comprises a gas inlet pipe transverse pipe and a gas inlet pipe vertical pipe, and a gas nozzle is arranged at the outer port of the gas inlet pipe vertical pipe along the circumference; the gas distribution disc and the gas mixing and stirring disc are arranged at intervals outside the outer port of the vertical pipe of the gas inlet pipe; a vertical air inlet pipe is arranged in the center of a vertical pipe of the gas inlet pipe, one end of the vertical air inlet pipe is provided with a secondary air inlet air door, and the tail end of the other end of the vertical air inlet pipe is blocked; air outlet holes are circumferentially arranged at the upper part of the tail end of the vertical air inlet pipe. The invention has the characteristics of compact structure, reasonable layout, good combination with other components in the burner and the like, and is mainly used for mixing the fuel gas and the air of the full premix fuel gas burner.
Description
Technical Field
The invention belongs to the technical field of gas equipment. In particular to a gas and air mixer for a full premix gas burner.
Background
The full-premix gas burner is a gas burner which consists of a combustion-supporting fan, a gas nozzle, a gas-air mixer, a premixing barrel and a combustion head, and is characterized in that gas and air are required to be premixed in the burner, and flame is burnt on the surface of the combustion head.
The full premix gas burner generally adopts a combustion air top blowing mode for supplying air, and the gas nozzle adopts a multi-pipe inclined blowing mode for supplying air. The disadvantage is that the air supply is single, the gas supply and the gas outlet are few, the stroke of the combustible gas is short after mixing, the combustible gas and the air can not be fully mixed, the combustible gas components at the gas outlet holes of the combustion head are uneven, the combustion of the burner is insufficient, the combustion efficiency is reduced, and the smoke is lowCO、CO 2 And the rise of harmful substances.
Disclosure of Invention
The invention aims to solve the problem of the shortage of gas and air mixing of the full premix gas burner, and provides a full premix gas burner gas-air mixer which improves the combustion efficiency and reduces the emission of harmful gases.
The technical scheme of the invention is as follows: a gas-air mixer of a full premix gas burner is characterized in that: comprises a gas inlet pipe, a gas distribution plate and a gas mixing and stirring flower plate; the gas inlet pipe comprises a gas inlet pipe transverse pipe and a gas inlet pipe vertical pipe, wherein the outer port of the gas inlet pipe transverse pipe is a gas inlet port, and the outer port of the gas inlet pipe vertical pipe is provided with a gas nozzle along the circumference; the gas distribution disc and the gas mixing and stirring disc are arranged at intervals outside the outer port of the vertical pipe of the gas inlet pipe; a vertical air inlet pipe is arranged in the center of a vertical pipe of the gas inlet pipe, one end of the vertical air inlet pipe penetrates through the pipe wall of the gas inlet pipe and is provided with a secondary air inlet air door, and the other end of the vertical air inlet pipe is plugged to a gas mixing and stirring flower disc; air outlet holes are circumferentially arranged at the upper part of the tail end of the vertical air inlet pipe to form a secondary air inlet nozzle.
In the technical scheme of the invention, a gas baffle plate is arranged at the inner port, close to a gas nozzle, of the transverse pipe of the gas inlet pipe.
The gas distribution disc in the technical scheme of the invention is a circular disc with the diameter larger than the diameter of a gas inlet pipe; the secondary air inlet pipe passes through the gas distribution plate.
The gas mixing and stirring flower disc in the technical scheme of the invention is a wind shielding disc with the diameter larger than that of the gas distribution disc.
The invention adopts a full premix gas burner gas-air mixer composed of a gas inlet pipe, a gas distribution plate and a gas mixing and stirring flower disc, wherein the gas inlet pipe comprises a gas inlet pipe transverse pipe and a gas inlet pipe vertical pipe, the outer port of the gas inlet pipe transverse pipe is a gas inlet port, gas nozzles are circumferentially arranged at the outer port of the gas inlet pipe vertical pipe, the gas distribution plate and the gas mixing and stirring flower disc are arranged at the outer side of the outer port of the gas inlet pipe vertical pipe at intervals, a vertical air inlet pipe is arranged at the center of the gas inlet pipe vertical pipe, one end of the vertical air inlet pipe penetrates through the wall of the gas inlet pipe and is provided with a secondary air inlet air door, the other end of the vertical air inlet pipe is plugged to the gas mixing and stirring flower disc, and an air outlet hole is circumferentially arranged at the upper part of the tail end of the vertical air inlet pipe to form a secondary air inlet nozzle. The top blowing is main air intake, and blows in from the top of the mixer, blows off the fuel gas in an outer ring shape, and mixes the flower disc through stirring to enable the fuel gas to be quickly mixed with the air. The side blowing is to solve the problem that the top blowing air inlet acting force is weakened at the position close to the core of the mixer, so that uneven layering is generated on the fuel gas close to the inner side, the side blowing is arranged at the center of the lower end of the mixer to blow the outside, the inner side secondary air supply is carried out, and the uneven fuel gas close to the inner side is further mixed.
The invention solves the problem of uneven mixing of the fuel gas and the air of the existing full premix fuel gas burner, improves the combustion efficiency, reduces the emission of harmful gas, and has the characteristics of compact structure, reasonable layout, good combination with other components in the burner, and the like. The invention is mainly used for mixing the fuel gas and the air of the full premix fuel gas burner.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of the present invention mounted to a fully premixed gas burner.
In the figure: 1. a fuel gas inlet pipe; 2. a secondary air inlet pipe; 3. a secondary air inlet nozzle; 4. a gas nozzle; 5. a gas distribution plate; 6. mixing and stirring the gas and the flower disc; 7. a secondary air inlet air door; 8. a burner outer cylinder; seventhly, a full premix burner fan; 10. a gas inlet port; 11. an ignition module; 12. a gas-air mixing section of the full premix burner; 13. a metal fiber combustion head; 14. a gas-air mixer.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1. The invention relates to a gas-air mixer of a full-premix gas burner, which comprises a gas inlet pipe 1, a gas distribution plate 5 and a gas mixing and stirring flower disc 6. The gas inlet pipe 1 comprises a gas inlet pipe transverse pipe and a gas inlet pipe vertical pipe, the outer port of the gas inlet pipe transverse pipe is a gas inlet port 10, and the outer port of the gas inlet pipe vertical pipe is provided with a gas nozzle 4 along the circumference. The gas nozzles 4 are distributed horizontally in 360 degrees in an annular porous arrangement. The gas baffle plate is arranged at the inner end of the gas inlet pipe transverse pipe, which is close to the gas nozzle 4, so that gas enters the gas inlet pipe vertical pipe from the direction close to the secondary air inlet air door 7, and the gas can be more uniformly in the gas inlet pipe vertical pipe. A gas distribution disc 5 is arranged at the lower end of the gas nozzle 4. The gas distribution disc 5 is a circular disc with the diameter larger than the diameter of the gas inlet pipe; the secondary air inlet pipe 2 passes through the gas distribution plate 5. A gas mixing and stirring flower disc 6 is arranged at the lower end of the gas distribution disc 5. The gas mixing and stirring flower disc 6 is a circular wind shielding disc with the diameter larger than that of the gas distribution disc 5, and a secondary mixing channel is formed between the gas mixing and stirring flower disc 6 and the burner outer cylinder 8. The center of the vertical pipe of the gas inlet pipe is provided with a vertical air inlet pipe 2, one end of the vertical air inlet pipe 2 penetrates through the pipe wall of the gas inlet pipe 1 and is provided with a secondary air inlet air door 7, and the other end of the vertical air inlet pipe is connected with a gas mixing and stirring flower disc 6 and is blocked at the tail end. And air outlet holes are arranged at the upper part of the tail end of the vertical air inlet pipe 2 along the circumference of 360 degrees to form a secondary air inlet nozzle 3.
As shown in fig. 2. The full premix gas burner comprises a full premix burner fan 9, an ignition module 11, a full premix burner gas-air mixing section 12 and a metal fiber combustion head 13. The gas-air mixer 14 is arranged at the outlet of the full-premix burner fan 9, the gas inlet port 10 of the gas-air mixer 14 is positioned outside the full-premix burner fan 9, and the vertical pipe axial direction of the gas inlet pipe is consistent with the axial direction of the air outlet of the full-premix burner fan 9. A primary air inlet channel (top blowing) is formed between the gas inlet pipe 1 and the air outlet wall of the full premix burner fan 9, and a secondary air inlet channel (side blowing) is formed between the vertical air inlet pipe and the air outlet wall of the full premix burner fan 9. The gas-air mixer 14 enables the gas to be efficiently and uniformly distributed after entering the burner, and the gas is quickly mixed with the primary air and the secondary air in an all-around way to achieve an ideal mixing effect. The gas-air mixer 14 has the characteristics of compact structure, reasonable layout, good combination with other components in the burner, and the like.
The invention solves the problems of the premixing effect of the gas and the air of the existing post-premixing (air intake after the fan) full-premixing gas burner, improves the mixing efficiency of the gas and the air, improves the combustion efficiency of the burner and is environment-friendly and up to the standard.
Claims (4)
1. A gas-air mixer of a full premix gas burner is characterized in that: the device is arranged at the outlet of a full premix burner fan (9); comprises a burner outer cylinder (8), a gas inlet pipe (1), a gas distribution disc (5) and a gas mixing and stirring flower disc (6); the gas inlet pipe (1) comprises a gas inlet pipe transverse pipe and a gas inlet pipe vertical pipe, the outer port of the gas inlet pipe transverse pipe is a gas inlet port (10), the axial direction of the gas inlet pipe vertical pipe is consistent with the axial direction of the air outlet of the full premix burner fan (9), and the outer port is provided with a gas nozzle (4) along the circumference; the gas distribution disc (5) and the gas mixing and stirring flower disc (6) are arranged at intervals outside the outer port of the vertical pipe of the gas inlet pipe; a vertical air inlet pipe (2) is arranged in the center of a vertical pipe of the gas inlet pipe, one end of the vertical air inlet pipe (2) penetrates through the pipe wall of the gas inlet pipe (1) and is provided with a secondary air inlet air door (7), and the other end of the vertical air inlet pipe is plugged to a gas mixing and stirring flower disc (6), so that a secondary mixing channel is formed between the gas mixing and stirring flower disc (6) and a burner outer cylinder (8); air outlet holes are circumferentially arranged at the upper part of the tail end of the vertical air inlet pipe (2) to form a secondary air inlet nozzle (3); a primary air inlet channel is formed between the gas inlet pipe (1) and the air outlet wall of the full-premix burner fan (9), and a secondary air inlet channel is formed between the vertical air inlet pipe and the air outlet wall of the full-premix burner fan (9).
2. The full premix gas burner gas-air mixer of claim 1, wherein: the gas baffle plate is arranged at the inner end of the gas inlet pipe transverse pipe, which is close to the gas nozzle (4).
3. The full premix gas burner gas-air mixer of claim 1 or 2, wherein: the gas distribution disc (5) is a circular disc with the diameter larger than the diameter of the gas inlet pipe; the secondary air inlet pipe (2) passes through the fuel gas distribution plate (5).
4. The full premix gas burner gas-air mixer of claim 1 or 2, wherein: the gas mixing and stirring flower disc (6) is a circular wind shielding disc with the diameter larger than that of the gas distribution disc (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357565 | 2017-10-20 | ||
| CN2017213575650 | 2017-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107741014A CN107741014A (en) | 2018-02-27 |
| CN107741014B true CN107741014B (en) | 2024-03-22 |
Family
ID=61233339
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721506408.1U Active CN207514911U (en) | 2017-10-20 | 2017-11-13 | Fully pre-mixing gas combustion burner gas air mixer |
| CN201711117031.5A Active CN107741014B (en) | 2017-10-20 | 2017-11-13 | Gas-air mixer of full-premix gas burner |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721506408.1U Active CN207514911U (en) | 2017-10-20 | 2017-11-13 | Fully pre-mixing gas combustion burner gas air mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN207514911U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207514911U (en) * | 2017-10-20 | 2018-06-19 | 湖北新华九暖通设备工程有限公司 | Fully pre-mixing gas combustion burner gas air mixer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402666A (en) * | 1980-12-09 | 1983-09-06 | John Zink Company | Forced draft radiant wall fuel burner |
| KR20040053572A (en) * | 2002-12-17 | 2004-06-24 | 코오롱건설주식회사 | Device for supplying oxygen-enriched air for incinerator |
| CN201621695U (en) * | 2009-11-06 | 2010-11-03 | 贵州航空发动机研究所 | A wide and stable flame combustion head for a gas burner |
| KR20160109673A (en) * | 2015-03-12 | 2016-09-21 | 박경일 | Gas burner |
| CN207514911U (en) * | 2017-10-20 | 2018-06-19 | 湖北新华九暖通设备工程有限公司 | Fully pre-mixing gas combustion burner gas air mixer |
-
2017
- 2017-11-13 CN CN201721506408.1U patent/CN207514911U/en active Active
- 2017-11-13 CN CN201711117031.5A patent/CN107741014B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402666A (en) * | 1980-12-09 | 1983-09-06 | John Zink Company | Forced draft radiant wall fuel burner |
| KR20040053572A (en) * | 2002-12-17 | 2004-06-24 | 코오롱건설주식회사 | Device for supplying oxygen-enriched air for incinerator |
| CN201621695U (en) * | 2009-11-06 | 2010-11-03 | 贵州航空发动机研究所 | A wide and stable flame combustion head for a gas burner |
| KR20160109673A (en) * | 2015-03-12 | 2016-09-21 | 박경일 | Gas burner |
| CN207514911U (en) * | 2017-10-20 | 2018-06-19 | 湖北新华九暖通设备工程有限公司 | Fully pre-mixing gas combustion burner gas air mixer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN207514911U (en) | 2018-06-19 |
| CN107741014A (en) | 2018-02-27 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 441000, 9th Floor, Hanbei Incubation Park Building, Zhuri Road, Tuanshan Town, High tech Zone, Xiangyang City, Hubei Province Applicant after: Flame Thermal Energy Equipment (Hubei) Co.,Ltd. Address before: 9th Floor, Hanbei Science and Technology Incubation Building, No. 9 Zhuiri Road, Xiangyang City, Hubei Province, 441000 Applicant before: HUBEI XINHUAJIU HVAC EQUIPMENT ENGINEERING CO.,LTD. Country or region before: China |
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