CN205878162U - From mixing low NOx burner in advance - Google Patents
From mixing low NOx burner in advance Download PDFInfo
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- CN205878162U CN205878162U CN201620882665.4U CN201620882665U CN205878162U CN 205878162 U CN205878162 U CN 205878162U CN 201620882665 U CN201620882665 U CN 201620882665U CN 205878162 U CN205878162 U CN 205878162U
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- hybrid chamber
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- blower fan
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Abstract
The utility model discloses a from mixing low NOx burner in advance, including fan, burning main part and gas air inlet unit, wherein: the burning main part includes mixture of distribution chamber and burning chamber in proper order, the hybrid chamber with the air outlet of fan is linked together, the air outlet of fan along with the tangential direction of hybrid chamber extends, gas air inlet unit's gas blowout pipeline along perpendicular to the axial direction of hybrid chamber prolongs. Above -mentioned from mixing low NOx burner in advance can solve the problem that the volume is great and manufacturing cost is higher of present preceding premix burner existence and the problem that the great combustion efficiency who leads to of pressure is lower and use cost is great that there is self in back premix burner.
Description
Technical field
This utility model relates to burner design field, particularly relates to a kind of from premixing low NO.
Background technology
Burner, is the equipment for fuel with air mixed combustion in certain proportion.The efficiency of combustion of burner, manufacture
Cost, equipment volume, use cost are the important indicators of its function admirable.Burner can be divided into industry combustion according to application
Burner and civilian burner.Certainly, dividing according to the hybrid mode of fuel with air, burner is further divided into front premixed combustion
Device and rear premix burner.
The front premix mode of front premix burner employing refers to combustion gas and mixes in the import department of blower fan with air.Concrete is mixed
Combination burning process is as follows: supply combustion gas at fan inlet, and the air that combustion gas and blower fan suck is mixed under the stirring action of blower fan
Close, finally enter combustion mechanism and implement burning.Front premix burner is usually provided with venturi mixing arrangement, and this can cause whole
The equipment volume of burner is relatively big, and, combustion gas is stirred to mix in blower fan with air and can there is risk, because premixing combustion before this
The blower fan of burner needs to use explosion-proof fan.Generally, explosion-proof fan is expensive, and this makes the manufacturing cost of front premix burner
It is significantly increased.
The mode that premixes after the employing of rear premix burner refers to combustion gas and mixes in the exit of blower fan with air.Concrete is mixed
Combination burning process is as follows: air is discharged from the outlet of blower fan under the effect of blower fan, then implements to mix with combustion gas, mixed gas
After entrance, the combustion mechanism of premix burner implements burning.Equally, rear premix burner is also generally provided with venturi mixer
Or cyclone mixer implements mixing, this can make the pressure loss of self of rear premix burner higher, affects efficiency of combustion,
The power of blower fan can be made simultaneously to increase therewith, cause use cost to be significantly increased.
In summary, there is the problem that volume is relatively big and manufacturing cost is higher in current front premix burner, premixes combustion afterwards
There is the problem that the pressure loss is relatively low compared with the efficiency of combustion caused greatly and use cost is bigger of self in burner.How to current
It is particularly important to solve above-mentioned technical problem that improvement implemented by burner.
Utility model content
The technical problems to be solved in the utility model is that the volume solving current front premix burner existence relatively greatly and is made
Make relatively costly problem and rear premix burner and have that self pressure is relatively low compared with the efficiency of combustion caused greatly and use cost
Bigger problem.
In order to solve above-mentioned technical problem, the technical scheme that this utility model provides is:
A kind of from premixing low NO, including blower fan, burning main body and gas inlet device；Wherein:
Described burning main body includes hybrid chamber and the combustion chamber being sequentially distributed；Described hybrid chamber and the air outlet of described blower fan
Being connected, the air outlet of described blower fan extends along the tangential direction with described hybrid chamber；
The combustion gas ejection passage of described gas inlet device extends along the axial direction being perpendicular to described hybrid chamber.
Further, above-mentioned in premix low NO, described hybrid chamber includes reducing section；Described reducing section cross section
Long-pending less one end is near described combustion chamber, and the bigger one end of described reducing section cross-sectional area is near the air outlet of described blower fan；
Described combustion gas ejection passage is positioned in described reducing section.
Further, above-mentioned in premix low NO, described hybrid chamber includes the mild section of eddy flow, and described eddy flow is mild
The less one end of reducing section cross-sectional area described in Duan Liantong and described combustion chamber；
The mild section of described eddy flow is isometrical section.
Further, above-mentioned in premix low NO, the lateral wall of the mild section of described eddy flow is provided with dowel, institute
State dowel and be provided with connecting hole.
Further, above-mentioned in premix low NO, described hybrid chamber includes combustion air inducer；Described combustion air
Inducer connects with the air outlet of described blower fan, and one end bigger with described reducing section cross-sectional area connects；
The radial dimension phase of one end that the radial dimension of described combustion air inducer is bigger with described reducing section cross-sectional area
Deng.
Further, above-mentioned in premix low NO, described combustion air inducer deviates from one end of described reducing section
It is provided with venting of dust explosion mouth.
Further, above-mentioned in premix low NO, described combustion air inducer is provided with standby fuel gas inlet.
Further, above-mentioned in premix low NO, described gas inlet device includes main pipeline and multiple arm；
Wherein:
Described main pipeline extends along the axis of described hybrid chamber, and multiple described arms are evenly arranged in described main pipeline
Around, and each along the vertical axial direction with described hybrid chamber extend.
Further, above-mentioned in premix low NO, the free end of described arm is provided with air nozzle.
Further, above-mentioned in premix low NO, it is transversal that described gas inlet device is arranged on described reducing section
One end that area is bigger.
The beneficial effects of the utility model are:
In the low NO of premix certainly that this utility model embodiment provides, the air outlet of blower fan is along the tangent line of hybrid chamber
Direction extends, and the gas driven by blower fan can be made to enter in hybrid chamber in the way of eddy flow, the combustion of gas inlet device
Gas ejection passage is in hybrid chamber, to be perpendicular to the direction ejection combustion gas of hybrid chamber axis.The air of eddy flow plays the work of stirring
With, the air of eddy flow and the combustion gas mixing of jet make hybrid chamber have stirring action, and effect, as ditto premixed mode, reaches pole
Good mixed effect, mixed gas burns in entering combustion chamber.
By above-mentioned mixed process it can be seen that the present embodiment provide from premix before low NO operationally uses
The mode of premix realizes mixing, but the mode of this front premix is different from the situation described in background technology, and combustion gas is without passing through
Blower fan, therefore without using explosion-proof fan.Do not want venturi mixing arrangement, therefore can solve what front premix mode existed the most yet
The problem that equipment volume is bigger.For rear premix burner, it is not necessary to venturi mixer or cyclone mixer, because of
This pressure loss not resulting in whole burner self is higher, and the power of blower fan more will not be made to increase therewith.
Accompanying drawing explanation
The main TV structure schematic diagram from premix low NO that Fig. 1 provides for this utility model embodiment；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is the part-structure schematic diagram of Fig. 1；
The schematic internal view from premix low NO part-structure that Fig. 5 provides for this utility model embodiment.
Detailed description of the invention
The utility model discloses one and certainly premix low NO, those skilled in the art can use for reference present disclosure,
It is suitably modified technological parameter to realize.It is important to note that those skilled in the art are come by all similar replacements and change
Saying and be apparent from, they are considered as being included in this utility model, and related personnel substantially can be without departing from this practicality
On the basis of novel content, spirit and scope, content described herein it is modified or suitably changes and combine, realize and answer
Use this utility model technology.
In this utility model, unless otherwise stated, Science and Technology noun used herein has this area
The implication that technical staff is generally understood that.
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with being embodied as
The utility model is described in further detail for example.
Refer to Fig. 1-5, this utility model embodiment provides a kind of from premixing low NO, and this premixes low nitrogen burning certainly
Device includes blower fan 1, burning main body and gas inlet device 4.
The intake stack 11 of blower fan 1 and motor 12 lay respectively at the both sides of the housing of blower fan 1.Burning main body includes dividing successively
The hybrid chamber 2 of cloth and combustion chamber 3, both connections.Hybrid chamber 2 is for air mixture and air.Hybrid chamber 2 and the air-out of blower fan 1
Mouth is connected.The air outlet of blower fan 1 extends along the tangential direction of hybrid chamber 2, and then makes air in the way of spiral air flow
Enter in hybrid chamber 2.
Gas inlet device 4 is the equipment of supply combustion gas, and the combustion gas ejection passage of gas inlet device 4 is positioned at hybrid chamber 2
In, and oppositely extending along the axis being perpendicular to hybrid chamber 2.
In the low NO of premix certainly that this utility model embodiment provides, the air outlet of blower fan 1 is cut along hybrid chamber 2
Line direction extends, and the gas driven by blower fan 1 can be made can to enter in the way of eddy flow in hybrid chamber 2, gas inlet device 4
Combustion gas ejection passage in hybrid chamber 2, be perpendicular to hybrid chamber 2 axis direction spray combustion gas.The air of eddy flow plays and stirs
The effect mixed, the air of eddy flow and the combustion gas mixing of jet make hybrid chamber 2 have stirring action, the effect the most ditto side of premix
Formula, reaches splendid mixed effect, and mixed gas burns in entering combustion chamber 3.
By above-mentioned mixed process it can be seen that the present embodiment provide from premix before low NO operationally uses
The mode of premix realizes mixing, but the mode of this front premix is different from the situation described in background technology, and combustion gas is without passing through
Blower fan 1, therefore without using explosion-proof fan.Do not want venturi mixing arrangement, therefore can solve front premix mode and exist the most yet
The bigger problem of equipment volume.For rear premix burner, it is not necessary to venturi mixer or cyclone mixer,
Higher thus without the pressure loss causing whole burner self, the power of blower fan 1 more will not be made to increase therewith.
Referring again to Fig. 2,3 and 5, in the low NO of premix certainly that the present embodiment provides, hybrid chamber 3 can include contracting
Mouthful section 21, the less one end of reducing section 21 cross-sectional area is near combustion chamber 3, and the bigger one end of reducing section 21 cross-sectional area is near wind
The air outlet of machine 1, the combustion gas ejection passage of gas inlet device 4 is positioned in reducing section 21.The cross-sectional area of reducing section 21 is gradually
Reduce, it is thus possible to increase air velocity, and then the eddy flow of the air entered into from blower fan 1 in hybrid chamber 2 can be continued under holding
Go.Combustion gas ejection passage is positioned at reducing section 21, flows out in the way of jet from the combustion gas of combustion gas ejection passage ejection, and this accelerated
Journey can make the disturbance effect of the air-flow of eddy flow higher so that the mixing effect of eddy flow becomes apparent from.
Hybrid chamber 3 can also include the mild section of eddy flow 22.It is less that the mild section of eddy flow 22 connects reducing section 21 cross-sectional area
One end and combustion chamber 3, the mild section of eddy flow is isometrical section, i.e. circulation area is the most equal.Accelerate through reducing section 21, strength mixes
After mixed gas enter the mild section of eddy flow 22, the mild section of eddy flow 22 is releived after playing mixing the effect of mixed airflow, and entrance subtracts
Little cyclonic action is firmly to mixed airflow distribution influence in combustion chamber 3.
The lateral wall of the mild section of eddy flow 22 is provided with dowel 221, and dowel 221 can be provided with connecting hole, dowel
221 effects that not only can play increase hybrid chamber 2, can also provide connection basis for burning main body is fixing simultaneously.
What the present embodiment provided can also include combustion air inducer 23, namely air intlet from premix low NO
Section.Combustion air inducer 23 connects with the air outlet of blower fan 1, and one end bigger with reducing section 21 cross-sectional area connects.Combustion-supporting
The radial dimension of one end that the radial dimension of wind inlet section 23 is bigger with reducing section 21 cross-sectional area.Air is from the air-out of blower fan 1
Mouth enters in combustion air inducer 23, say, that the air outlet of blower fan 1 enters mixed with the tangential direction of combustion air inducer 23
Close in chamber 2.
Preferably, combustion air inducer 23 deviates from one end of reducing section 21 can arrange venting of dust explosion mouth 231, to improve from premix
The safety of low NO.Refer to Fig. 2 and 3, combustion air inducer 23 is provided with standby fuel gas inlet 232, standby combustion gas
Import 232 can be connected with gas inlet device 4, for standby.Standby fuel gas inlet 232 can also use as venting of dust explosion mouth.
Refer to Figure 4 and 5, gas inlet device 4 can include main pipeline 41 and multiple arm 42.Main pipeline 41 is along mixed
The axis closing chamber 2 extends, and multiple arms 42 are evenly arranged in main pipeline 41 around, and each along being perpendicular to the axle of hybrid chamber 2
Extend to direction, i.e. realize radial jet.The gas inlet device 4 of said structure is capable of spraying the most uniformly combustion gas,
The mixed effect of combustion gas and air can be improved.Now, arm 42 is combustion gas ejection passage.In order to improve jeting effect, specifically
, the free end of multiple arms 42, i.e. jet segment can be provided with air nozzle.
Gas inlet device 4 preferably can be arranged in one end that reducing section 21 cross-sectional area is bigger, as it is shown in figure 5, this
The mixing of combustion gas and air can be realized in advance, improve mixed effect.
It should be noted that in the application, the generation of nitrogen oxides in combustion process can be reduced from premix low NO,
Therefore can reach the effect of low nitrogen, the discharge of nitrogen oxides can reach 20mg/m3(@3%O2) below.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (10)
1. one kind premixes low NO certainly, it is characterised in that include blower fan, burning main body and gas inlet device；Wherein:
Described burning main body includes hybrid chamber and the combustion chamber being sequentially distributed；Described hybrid chamber is connected with the air outlet of described blower fan
Logical, the air outlet of described blower fan extends along the tangential direction with described hybrid chamber；
The combustion gas ejection passage of described gas inlet device extends along the axial direction being perpendicular to described hybrid chamber.
2. as claimed in claim 1 from premixing low NO, it is characterised in that described hybrid chamber includes reducing section；Described
The less one end of reducing section cross-sectional area is near described combustion chamber, and the bigger one end of described reducing section cross-sectional area is near described wind
The air outlet of machine；
Described combustion gas ejection passage is positioned in described reducing section.
It is 3. as claimed in claim 2 from premixing low NO, it is characterised in that described hybrid chamber includes the mild section of eddy flow,
The mild section of described eddy flow connects the less one end of described reducing section cross-sectional area and described combustion chamber；
The mild section of described eddy flow is isometrical section.
4. as claimed in claim 3 from premixing low NO, it is characterised in that the lateral wall of the mild section of described eddy flow is arranged
Dowel, described dowel is had to be provided with connecting hole.
5. as claimed in claim 3 from premixing low NO, it is characterised in that described hybrid chamber includes combustion air import
Section；Described combustion air inducer connects with the air outlet of described blower fan, and one end bigger with described reducing section cross-sectional area is even
Logical；
The radial dimension of one end that the radial dimension of described combustion air inducer is bigger with described reducing section cross-sectional area is equal.
6. as claimed in claim 5 from premixing low NO, it is characterised in that described combustion air inducer deviates from described contracting
One end of mouth section is provided with venting of dust explosion mouth.
7. according to certainly premixing low NO described in claim 5 or 6, it is characterised in that described combustion air inducer is arranged
There is standby fuel gas inlet.
8. as claimed in claim 2 from premixing low NO, it is characterised in that described gas inlet device includes main pipeline
With multiple arms；Wherein:
Described main pipeline extends along the axis of described hybrid chamber, and multiple described arms are evenly arranged in the week of described main pipeline
Enclose, and extend each along the vertical axial direction with described hybrid chamber.
9. as claimed in claim 8 from premixing low NO, it is characterised in that the free end of described arm is provided with spray
Valve.
10. as claimed in claim 8 or 9 from premixing low NO, it is characterised in that described gas inlet device is arranged on
One end that described reducing section cross-sectional area is bigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620882665.4U CN205878162U (en) | 2016-08-15 | 2016-08-15 | From mixing low NOx burner in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620882665.4U CN205878162U (en) | 2016-08-15 | 2016-08-15 | From mixing low NOx burner in advance |
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| Publication Number | Publication Date |
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| CN205878162U true CN205878162U (en) | 2017-01-11 |
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| CN201620882665.4U Active CN205878162U (en) | 2016-08-15 | 2016-08-15 | From mixing low NOx burner in advance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590811A (en) * | 2023-07-19 | 2023-08-15 | 新创碳谷集团有限公司 | New air mixing adjusting system and method for carbon fiber pre-oxidation furnace |
-
2016
- 2016-08-15 CN CN201620882665.4U patent/CN205878162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590811A (en) * | 2023-07-19 | 2023-08-15 | 新创碳谷集团有限公司 | New air mixing adjusting system and method for carbon fiber pre-oxidation furnace |
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