CN208886768U - Sub- low-NOx combustor for wall-hung boiler - Google Patents
Sub- low-NOx combustor for wall-hung boiler Download PDFInfo
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- CN208886768U CN208886768U CN201820630736.0U CN201820630736U CN208886768U CN 208886768 U CN208886768 U CN 208886768U CN 201820630736 U CN201820630736 U CN 201820630736U CN 208886768 U CN208886768 U CN 208886768U
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- burner
- fire
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Abstract
The utility model relates to a kind of low NO in Asia for wall-hung boilerxBurner, burning running is carried out under condition of negative pressure, the burner includes mainboard, bracket and fire row (1), the fire row (1) is set to the top of mainboard, branch is set up in mainboard (1) front and rear sides, mainboard lower part is equipped with ejecting port (2), proportioned combustion gas and air enter burner by ejecting port (2), the burner base is equipped with air register (3), and the gas introduced by ejecting port (2) enters each fire row (1) after a regulating the qi flowing in the channels band (4) adjusting.Compared with prior art, flame is short, ignition temperature is low and stability is good, the NO of generation when the utility model is with burningxThe advantages that amount is few.
Description
Technical field
The utility model relates to a kind of burners, more particularly, to a kind of low NO in Asia for wall-hung boilerxBurner.
Background technique
As dynamics of the country to environment protection treating continues to increase.Continuous new standard is had to the flue gas emission of gas appliance to go out
It is existing, especially to NOxDischarge.Various regions increase environmentally friendly management in recent years, issue pollutant emission standard successively.Now
Heating coal centered on Beijing area changes gas engineering and has started to carry out low-nitrogen discharged requirement, and Efficiency in Buildings in Tianjin Area executes low-nitrogen discharged want
It asks in 100mg/kw m-3Hereinafter, belonging to sub- low-nitrogen discharged index.For with traditional wall-hung boiler, the part generated is high
Temperature can promote NOxGeneration.
According to the thermal NO of Zdldovich Frank-Kamenetskii relationxGenerative theory, thermal NOxProduction quantity it is main related with temperature, and base
Exponent function relation in sheet, according to this principle, to reduce NOxProduction quantity is it is necessary to reduce ignition temperature, due to by combustion system
With the limitation of the thermal efficiency, ignition temperature cannot drop too low, so reducing thermal NOxIt must set about in terms of two: first is that cutting
It is real to reduce ignition temperature, the peak temperature especially to burn；Second is that air coefficient is rationally designed, in the case where guaranteeing thermic load
Keep the temperature field of burning uniform as far as possible.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of for wall hanging to overcome the problems of the above-mentioned prior art
The low NO in Asia of furnacexBurner.
In order to reduce pollution of the gas appliance to air, the utility model devises the low NO for wall-hung boilerxBurning
Device.This burner is a kind of burner to burn under condition of negative pressure, and this burner is on the basis of existing burner
It is improved, so that being realized on the basis of not changing original wall hanging furnace structure sub- low-nitrogen discharged.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of low NO for wall-hung boilerxBurner, carries out burning running under condition of negative pressure, and the burner includes
Mainboard, bracket and fire row, the fire row are set to the top of mainboard, and branch is set up in mainboard front and rear sides, and mainboard lower part, which is equipped with, draws
Loophole, proportioned combustion gas and air enter burner by ejecting port, and the burner base is equipped with air register, by injection
The gas that mouth introduces enters each fire row after regulating the qi flowing in the channels band adjusting.The regulating the qi flowing in the channels band is the variable cross-section cavity of interior smooth,
Into regulating the qi flowing in the channels band gas in its cavity rapid dispersion, due to the cavity be variable section structure, gas by regulating the qi flowing in the channels band one end
Wide end is flowed by the narrow end of its cavity after, such structure make stream pressure steady and dispersion it is uniform, eventually enter into it
The fire row of top.Wherein the height of regulating the qi flowing in the channels band accounts for the 10%~30% of entire mainboard height.
Further, the burner has a plurality of fire row arranged in parallel, and the spacing between each fire row is 10-
15mm。
Further, each fire row is equipped with multiple fire hole groups arranged in parallel, and the fire hole group is by rectangle fire hole and circle
Shape fire hole composition.
Further, two sides are two round fire holes arranged in parallel in the fire hole group, and centre is two parallels
Column rectangle fire hole, the round fire hole of the short side of the rectangle fire hole towards two sides.
Further, the diameter of the round fire hole is 1~1.1mm, the size of rectangle fire hole be (2~2.5) ×
(0.5~1) mm.
Further, the thermic load of described every fire row is 1.6~1.8kw.
Air register is equipped with multiple air holes, which is circle or rectangular, arranged in parallel, mutually
The distance between it is equal, the area in each hole is 1m3~5m3.In aperture need to by fuel oxygen demand, primary air with ratio and
Primary air ratio determines number of aperture.The gas introduced by ejecting port and the air hole entrance from air register
Air progress is secondary to be mixed to get final combustion gas, and primary air ratio is 70%~80%.
The bracket includes fore-stock and after-poppet, is connect respectively with the front of mainboard with rear portion；The after-poppet
Using without the fiery structure of upload.
Compared with prior art, the fire hole group in the utility model and can maximum limit by the fire row that fire hole group arranges
The reduction flame height of degree, so that the vertical temperature difference of flame reduces, flame bulk temperature is reduced, and effectively reduces NOxIt produces
It is raw.On the other hand, positioned at the effective steady air flow field entered from bottom of the air register of burner base and into
Entering the amount of air, the steady by this method stability of flame can control primary air ratio 70%~80% with this mode,
Ignition temperature is reduced with this.In addition, regulating the qi flowing in the channels the band further steady pressure of combustion gas and the stability of flame.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the side structure schematic diagram of the utility model.
In figure, 1, bracket and fire row, 2, ejecting port, 3, air register, 4, regulating the qi flowing in the channels band, 11, rectangle fire hole, 12, round fire
Hole.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
As shown in figs. 1 and 2, a kind of low NO for wall-hung boilerxBurner carries out burning running, institute under condition of negative pressure
The burner stated includes mainboard, bracket and fire row 1, and the fire row 1 is set to the top of mainboard, and branch is set up in 1 front and back two of mainboard
Side, mainboard lower part are equipped with ejecting port 2, proportioned combustion gas and air and enter burner, the burner bottom by ejecting port 2
Portion is equipped with air register 3, and the gas introduced by ejecting port 2 enters each fire row 1 after a regulating the qi flowing in the channels band 4 adjusting.The regulating the qi flowing in the channels
With 4 be interior smooth variable cross-section cavity, into regulating the qi flowing in the channels band 4 gas in its cavity rapid dispersion, due to the cavity be become
Cross section structure, for gas by flowing into wide end by the narrow end of its cavity after one end entrance of regulating the qi flowing in the channels band 4, such structure makes stream pressure
It is steady and dispersion uniform, eventually enter into the fire row 1 above it.Wherein the height of regulating the qi flowing in the channels band 4 accounts for the 10% of entire mainboard height
~30%.
As shown in figs. 1 and 2, the burner has a plurality of fire row 1 arranged in parallel, and the spacing between each fire row 1 is
10-15mm.Each fire row 1 is equipped with multiple fire hole groups arranged in parallel, and the fire hole group is by rectangle fire hole 11 and round fire hole
12 compositions.Two sides are two round fire holes 12 arranged in parallel in the fire hole group, and centre is two rectangle fire arranged in parallel
Hole 11, the round fire hole 12 of the short side of the rectangle fire hole 11 towards two sides.The diameter of the round fire hole 12 is 1~1.1mm,
The size of rectangle fire hole 11 is (2~2.5) × (0.5~1) mm.The thermic load of every fire row 1 is 1.6~1.8kw.
Air register 3 is equipped with multiple air holes, which is round or rectangular, arranged in parallel, phase
The distance between mutual equal, the area in each hole is 1m3~5m3.Ratio need to be matched by fuel oxygen demand, primary air in aperture
And primary air ratio determines number of aperture.The gas introduced by ejecting port 2 with from air hole on air register 3 into
The air progress entered is secondary to be mixed to get final combustion gas, and primary air ratio is 70%~80%.
The bracket includes fore-stock and after-poppet, is connect respectively with the front of mainboard with rear portion；The after-poppet
Using without the fiery structure of upload.
The fire row that fire hole group arranges can reduce flame height to greatest extent, so that the vertical temperature difference of flame subtracts
Small, flame bulk temperature reduces, and reduces NOxIt generates.Enter from bottom positioned at the air register of burner base is steady
Air flow field and the amount for entering air, the steady stability of flame control primary air ratio 70%~80%, with this
Reduce ignition temperature.Regulating the qi flowing in the channels the band further steady pressure of combustion gas and the stability of flame.
Claims (10)
1. a kind of low NO in Asia for wall-hung boilerxBurner, carries out burning running under condition of negative pressure, and the burner includes
Mainboard, bracket and fire row (1), the fire row (1) are set to the top of mainboard, and branch is set up in mainboard front and rear sides, mainboard lower part
Equipped with ejecting port (2), proportioned combustion gas and air enter burner by ejecting port (2), which is characterized in that the burner
Bottom is equipped with air register (3), and the gas introduced by ejecting port (2) enters each fire row (1) after a regulating the qi flowing in the channels band (4) adjusting.
2. a kind of low NO in Asia for wall-hung boiler according to claim 1xBurner, which is characterized in that the burner
With a plurality of fire row (1) arranged in parallel, the spacing between each fire row (1) is 10-15mm.
3. a kind of low NO in Asia for wall-hung boiler according to claim 1 or 2xBurner, which is characterized in that each fire row (1)
Multiple fire hole groups arranged in parallel are equipped with, the fire hole group is made of rectangle fire hole (11) and round fire hole (12).
4. a kind of low NO in Asia for wall-hung boiler according to claim 3xBurner, which is characterized in that the fire hole group
Middle two sides are two round fire holes (12) arranged in parallel, and centre is two rectangle fire holes (11) arranged in parallel, the rectangle fire hole
(11) round fire hole (12) of the short side towards two sides.
5. a kind of low NO in Asia for wall-hung boiler according to claim 4xBurner, which is characterized in that the circle fire
The diameter in hole (12) is 1~1.1mm, and the size of rectangle fire hole (11) is (2~2.5) × (0.5~1) mm.
6. a kind of low NO in Asia for wall-hung boiler according to claim 1xBurner, which is characterized in that the air gear
Plate (3) is equipped with multiple air holes.
7. a kind of low NO in Asia for wall-hung boiler according to claim 6xBurner, which is characterized in that described by injection
Gas that mouthful (2) introduce and the air entered from air hole on air register (3) carry out it is secondary be mixed to get final combustion gas,
Primary air ratio is 70%~80%.
8. a kind of low NO in Asia for wall-hung boiler according to claim 1xBurner, which is characterized in that the regulating the qi flowing in the channels band
It (4) is the variable cross-section cavity of interior smooth, the gas into regulating the qi flowing in the channels band (4) disperses after pressure regulation to enter fire row (1) square thereon, tune
The height of gas band (4) accounts for the 10%~30% of entire mainboard height.
9. a kind of low NO in Asia for wall-hung boiler according to claim 1xBurner, which is characterized in that the bracket packet
Fore-stock and after-poppet are included, is connect respectively with the front of mainboard with rear portion；The after-poppet is used without the fiery structure of upload.
10. a kind of low NO in Asia for wall-hung boiler according to claim 2xBurner, which is characterized in that every fire row (1)
Thermic load be 1.6~1.8kw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820630736.0U CN208886768U (en) | 2018-04-28 | 2018-04-28 | Sub- low-NOx combustor for wall-hung boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820630736.0U CN208886768U (en) | 2018-04-28 | 2018-04-28 | Sub- low-NOx combustor for wall-hung boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208886768U true CN208886768U (en) | 2019-05-21 |
Family
ID=66492719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820630736.0U Active CN208886768U (en) | 2018-04-28 | 2018-04-28 | Sub- low-NOx combustor for wall-hung boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208886768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274229A (en) * | 2019-06-11 | 2019-09-24 | 广东万家乐燃气具有限公司 | A kind of burner monolithic, burner and gas and hot water equipment |
| CN112066369A (en) * | 2019-06-10 | 2020-12-11 | 芜湖美的厨卫电器制造有限公司 | Combustor, hanging stove and water heater |
-
2018
- 2018-04-28 CN CN201820630736.0U patent/CN208886768U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066369A (en) * | 2019-06-10 | 2020-12-11 | 芜湖美的厨卫电器制造有限公司 | Combustor, hanging stove and water heater |
| CN112066369B (en) * | 2019-06-10 | 2022-10-04 | 芜湖美的厨卫电器制造有限公司 | Combustor, hanging stove and water heater |
| CN110274229A (en) * | 2019-06-11 | 2019-09-24 | 广东万家乐燃气具有限公司 | A kind of burner monolithic, burner and gas and hot water equipment |
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