CN107002988A - Revolve jet combustion device - Google Patents
Revolve jet combustion device Download PDFInfo
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- CN107002988A CN107002988A CN201580068008.4A CN201580068008A CN107002988A CN 107002988 A CN107002988 A CN 107002988A CN 201580068008 A CN201580068008 A CN 201580068008A CN 107002988 A CN107002988 A CN 107002988A
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- combustion chamber
- air
- burner
- burner according
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
- F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of burner, the burner includes the combustion chamber with the substantially a hollow cylindrical shape extended along center line and with closure end.May be connected to the cartridge of fuels sources has at least one opening for making the inside of combustion chamber be fluidly connected with fuels sources so that fuel can be delivered to the inside of combustion chamber from fuels sources.At least one air intake is configured to provide air stream into the inside of combustion chamber.The air stream is set and is configured in combustion chamber form vortex structure.
Description
The cross reference of related application
This application claims the priority for enjoying the U.S. Provisional Patent Application the 62/063rd, 037 submitted on October 13rd, 2014,
Entire contents are incorporated herein by reference.
Technical field
Present disclosure is related to burner, and relates more specifically to the burner with combustion chamber.
Background technology
Industrial smelting furnace is at high temperature（Generally in the range of about 2400-3000 ℉）Operate to improve smelting furnace and work
The skill thermal efficiency.So, smelting furnace and flame temperature tend to be very high, so as to cause to produce substantial amounts of NOx emission.
The effort of control NOx emission already leads to the development of various NOx control technologies.Such technology is by changing flame
Stoichiometry and total combustion process and the formation for suppressing NOx.Exemplary NOx control technologies are classified including oxygen-enriched air, its
In, oxygen-enriched air is graded introducing combustion process；Waste gas is recycled, wherein, waste gas is introduced into main burning area to reduce fire
Flame temperature；Fuel staging, wherein, fuel, which is graded, to be introduced in combustion process；And other method, such as, vibration and pulse
Burning.Although some in these control methods are partly effective for control NOx emission, they may be not enough to
Solve the NOx formation at burner and reduce.
The content of the invention
It the present invention relates to the use of and fired in annulus combustion chamber as formed by the decay vortical air flow that peripheric jet flow is produced
Flame stabilization in burner, in the embodiment shown, annulus combustion chamber formation is between shell and gas pipeline.Assign and passing through
Burner and it is provided to the vorticla motion of air or air/fuel mixture of burner outlet and is used in the attached of flame
It is near to form flue gas recirculation（FGR）Region, this causes relatively low flame temperature and relatively low nitrogen oxides（NOx）Formed
Speed.Air/fuel mixing can further be maximized and improve by radially spraying the gas into axial direction-tangential air stream
Efficiency of combustion.
In the disclosed embodiment, various vortex quantity can be realized at combustor exit.By being changed independently
The quantity of peripheric jet flow, the diameter of jet, enter the length of inflow angle or annulus and control vortex quantity.In these sides
In face, numerical simulation and experimental study have shown that, reduce the vortex quantity that air rate causes somewhat to reduce, simultaneously
Combustion chamber stability is maintained under relatively low input, this causes very high regulation ratio（turn-down ratios）.
Therefore, in an aspect, this disclosure has described a kind of burner.The burner includes having along center
Line extension substantially a hollow cylindrical shape and with closure end.May be connected to fuels sources cartridge have make combustion chamber
At least one opening that fluidly connects of inside and fuels sources to allow fuel to be delivered to combustion chamber from fuels sources
It is internal.At least one air intake is configured to provide air stream to the inside of combustion chamber.Air stream is set and is configured to
Vortex structure is produced in combustion chamber.
In another aspect, this disclosure has described a kind of method for operating burner.This method includes providing
Combustion chamber with substantially a hollow cylindrical shape, the combustion chamber defines closure end and open end, and the combustion chamber is at it
In define internal volume.This method further comprises the tangential side in the circular cross section of the combustion chamber adjacent with closure end
Upwards at least one air stream is sprayed into the internal volume, and the eddy flow of at least one air stream is introduced to combustion chamber
In.The fuel stream is provided in combustion chamber with so that The fuel stream is mixed with the eddy flow of at least one air stream to form incendivity
The eddy flow of mixture, and the eddy flow of combustible mixture is discharged from the open end of combustion chamber.When combustible mixture
When eddy flow burns, the combustion product that permission is produced by combustible mixture when combustible mixture is discharged from combustion chamber
At least a portion is back into the eddy flow of combustible mixture.
Brief description of the drawings
Figure 1A and Figure 1B are schematically showing according to the burner of present disclosure.
Fig. 2A and Fig. 2 B are schematically showing for the alternate embodiment for the burner according to present disclosure.
Fig. 3 A- Fig. 3 D are the summary view and partial view according to present disclosure.
Fig. 4 is that the figure of influence of the combustor length to NOx emission in the burner according to present disclosure is represented.
Fig. 5 is the summary view of the burner being arranged in cover body according to present disclosure.
Fig. 6 and Fig. 7 are the swirl numbers in annulus in two burner embodiments according to present disclosure
The figure of amount distribution is represented.
Fig. 8 A and Fig. 8 B are that the figure of the velocity field in two burner embodiments according to present disclosure is represented.
Fig. 9 is the figure table of the vortex quantity of the corresponding length along two combustion chamber embodiments according to present disclosure
Show.
Figure 10 is relative to the rotation of the corresponding axial distance along two burner embodiments according to present disclosure
The figure of whirlpool quantity is represented.
Figure 11 A are the summary views of the alternate embodiment of the burner set according to present disclosure.
Figure 11 B are the partial views of the burner shown in Figure 11 A.
Figure 12 is the summary view of the burner for being provided with manifold according to present disclosure.
Embodiment
Present disclosure is related to the burner design for the stable vortex for producing air or air/fuel mixture.Herein
Disclosed burner depends on the geometry of the combustion chamber of burner to realize desired flame characteristics.Advantageously,
Disclosed combustion-chamber geometry is simpler than existing design and without moving parts.In other words, it is disclosed herein
Burner has been modified such that using air and/or fuel vortex to obtain mix to cause more more preferable than existing burner
Combustor efficiency can be improved, and the effect that FGR minimizes NOx emission can be played to greatest extent.
Show that the design of burner 100 is schematically shown in Figure 1A and Figure 1B.Burner 100 includes air nozzle
Or air intake 102 and gas or fuel inlet 104, the air nozzle or air intake 102 and gas or fuel inlet
104 are provided to generally elongated cylindricality combustion chamber 106, and combustion chamber 106 has exit opening at a longitudinal end
108.As indicated, combustion chamber 106 has tubular form, the tubular form has the closure end relative with exit opening 108
110.Combustion chamber 106 has frustoconical shape or wall 112, and the wall 112 will have diameter D0Chamber wall with smaller
Diameter D1Exit opening be connected with each other.
In order to create the geometry that air and fuel meet and mixed under tangential momentum, and in order to create low-pressure area
Domain（It is vortexed or vortex structure）So that using the recycling of the inner fuel gas of the near exit in combustion chamber, burning is entered herein
OK, air and fuel inlet 102 and 104 are configured to be at an angle of relative to the center line 114 of combustion chamber 106.More specifically, empty
Gas entrance 102 is configured to be in acute angle theta relative to center line 1141Place, and it is in axle along the center line 114 of combustion chamber
To position l1Place so that the air of entrance combustion chamber 106 carries momentum in the radial and axial directions relative to center line 114
Component.Similarly, fuel inlet 104 is configured to be in acute angle theta relative to center line 1142Place, and along in combustion chamber
Heart line 114 is located at axial location l2Place so that enter combustion chamber 106 fuel also relative to center line 114 carry radially and
Momentum component on axial direction.The angle and axial location of air and fuel inlet 102 and 104 can be with identical or different.
In burner embodiment shown in Figure 1B, air and fuel inlet are tangentially set relative to the circular outer wall of combustion chamber 106.
Having determined contributes to fuel/air mixture to mix and contributes to the geometric parameter for creating recirculation regions to include from combustion
The end of room is burnt respectively to air jet apart from l1And l2, respectively θ1And θ2Air and fuel injection angle, with
And respectively D0And D1Combustion chamber and exit opening diameter.The other factors of burner performance, which can be influenceed, includes burner
Up to regulation ratio.As used herein, " regulation ratio " expression burner can be realized maximum heat output and burner
It will efficiently or controllably operate the ratio of residing minimum heat output level.
The alternate embodiment 200 of burner is shown in Fig. 2A and Fig. 2 B.Burner 200 includes the He of air intake 202
Fuel inlet 204.In this embodiment, air intake 202 be configured to relative to generally elongated cylindricality combustion chamber 206 into
Tangentially.Fuel is provided to combustion chamber 206 by cartridge 204, cartridge 204 be placed coaxially in combustion chamber 206 and
Exit opening 208 is extended to along combustion chamber centerline 214 from closure end 210.Combustion chamber 206 has cylindrical shape, the post
Shape shape has the outlet diameter D more than cartridge 2042Diameter D1.Combustion chamber 206 and the relative position and chi of cartridge 204
The very little annulus 216 for creating generally cylindricality, the annulus 216 axially extends along combustion chamber 206 and in combustion
Between the shell and cartridge 204 of burning room 206 radially.
During operation, when the air of offer to combustion chamber 206 is advanced in annulus 216 along combustion chamber 206
Form vortex.Vortex air in annulus 216 is mixed so as to shape with leaving the fuel of cartridge 204 at outlet 208
Into combustible mixture, combustible mixture formation flame.Entered when tangential speed component is added to by tangential air inlet 202
The eddy flow of the air formed during the velocity vector for the air for entering combustion chamber 206 in annulus 216.
For rotation jet, the degree of vortex present in jet can be depended on and recognize different fluidised forms.Term " vortex
Quantity " is well known in the art and is used herein to mean that the maximum tangential velocity of stream and the ratio of axial velocity.
Therefore, vortex quantity is the amount or the dimensionless group of degree for characterizing the vortex in stream.In burner 200, for low vortex
Quantity（That is, when maximum tangential velocity is 50% or smaller magnitude of axial centre linear velocity）, air stream or jet with
Non- vortex situation similar mode operation, although being repaiied in the distribution of average and velocity of wave motion, jet width or expansion in the presence of some
Change.However, when vortex becomes strong（That is, when tangential velocity goes above axial velocity）, the formation of recirculation regions can lead
Cause reverse flow.The phenomenon is commonly referred to as Vortex Breakdown（vortex breakdown）Fluidised form.In order in the downstream of pipeline（That is,
After the outlet of burner）Vortex Breakdown fluidised form is formed, tangential air jet is injected into the annulus of combustion chamber 206
In 216.
Generally, higher vortex quantity will cause outlet 208 at the flame more expanded, this so increase for
By the recirculation regions of the combustion product of generation in the flame of the near exit of combustion chamber.Flue gas recirculation（FGR）Reduction
Flame temperature, and therefore reduce NOx generations.But excessive FGR generations can make combustion instability and even draw
Polot flame extinguishes.On this basis it is possible to be determined for specific burner configuration and implement the rotation for giving burner configuration
The scope of whirlpool quantity, fully NOx emission can be reduced while maintaining flame holding under the scope.
The alternate embodiment 300 of burner is shown in Fig. 3 A- Fig. 3 D.Burner 300 includes surrounding combustion chamber 306
Four air intakes 302 tangentially setting of closure end cross-sectional 310.Combustion chamber 306 includes the frustoconical of convergence type
Outlet 309.Fuel inlet device for providing from fuel to the inside of combustion chamber 306 is implemented as fuel in the embodiment shown
Pipe 304.Cartridge 304 is placed coaxially in combustion chamber 306 and prolonged along combustion chamber centerline 314 from closure end 310
Extend exit opening 308.Combustion chamber 306 has cylindrical shape, and the cylindrical shape has the outlet diameter D more than cartridge 3042
Diameter D1.The relative position and size of combustion chamber 306 and cartridge 304 create the annulus 305 of generally cylindricality, ring-type
Space 305 axially extend along combustion chamber 306 and between the shell and cartridge 304 of combustion chamber 306 radially.
During operation, when provide to the air of combustion chamber 306 be formed at the wall of combustion chamber 306 and cartridge 304 it
Between annulus 305 in form vortex when being advanced along combustion chamber 306.Vortex air in annulus 305 is with leaving
The fuel of cartridge 304 is mixed to form combustible mixture at the exit opening 308 of combustion chamber 306, when incendivity is mixed
Flame is produced when compound is ignited.When tangential speed component is added to the sky by tangential air inlet 302 into combustion chamber 306
During the velocity vector of gas, the eddy flow of air is formed in annulus 305.In the embodiment shown, four pipelines form sky
Gas entrance 302.Air intake 302 is tangentially connected to the end of combustion chamber 306.Cartridge 304 is formed as closed end pipe, should
Closed end pipe has its closure end being at least partially disposed on along center line 314 in combustion chamber 306.In cartridge
Many holes 316 are got out in 304 wall so as to allow gas or other fuel enter combustion chamber 306 inner space and with this
The air mixing advanced in inner space.
Quantity, the size and location in hole 316 are adjusted and are selected to provide desired gas pressure.As indicated, hole
316 are symmetrically arranged in selected axial positions around the cross section of cartridge 304.Alternatively, the axial location in hole, fixed
To can be different from shown structure with structure.The plane that spray-hole is located at can be seated in any position on gas pipeline,
And there may be multiple planes, for example, there may be hole at the beginning and end of gas pipeline.Optimal gas pressure will make
The influence of incorporation time and gas infiltration is maximized in air-flow.For example, for the burner shown in Fig. 3 A- Fig. 3 D, finding ten
Six 2mm hole is so that hot NOx emission minimizes the gas pressure drop for also creating 14 inchess of water(in H2O) simultaneously.
Curve map 400 shown in Fig. 4 shows the influence that outlet vortex quantity is formed to hot NOx.In order to be tested,
Similar to the burner 300 that 309 are exported without convergence type（Fig. 3 D）Burner be constructed and with relatively long combustion chamber
（1.5m）Test.NOx emission is measured for various chamber lengths.The data of acquisition are shown in Fig. 4, wherein, along dampening
Flat axis represents combustor length（Unit is rice）, and represent NOx concentration in vertical axis 403（Unit is g/L）.Make
Two curves, each represent different ignition mixtures.First curve 402 represents wherein to mix relative to stoichiometric(al) combustion
Thing provides the experiment of 37% excess air.Second curve 404 represents 55% excess air.Such as it can be seen that depositing from chart 400
Following correlations：Longer combustor length contributes to the increase of NOx emission.Length for being shorter than 0.4 meter, for being tested
Specific chamber diameter, fray-out of flame.Believe when chamber length is decreased to 0.4m from 1.5m, due to higher
Vortex quantity and the more FGRs associated with shorter combustion chamber, so NOx generation is significantly reduced.For being shorter than
0.4m chamber length, excessive FGR has extinguished flame and burner becomes unstable.
Convergence type cone 309 in the end of combustion chamber（Fig. 3）Effect be also apparent.Will be it is contemplated that reducing
The outlet diameter of combustion chamber（It is used as the result of cone）Reduce outlet vortex quantity and increase by exit opening 308 from
Open the muzzle velocity of the fuel/air mixture of combustion chamber 306.The muzzle velocity of increase makes flame anchorage point be moved in gas
Position before body spray-hole 316.In order to illustrate, it is noted that, flame is anchored at fuel spray in the case of without cone
At perforation.This means incorporation time increase and flame is more exposed to FGR.Moreover, relatively low vortex quantity contributes to
The stability of burner and higher muzzle velocity prevent tempering（flash-back）.
Using convergence type cone 309, burner can be operated under half pre-mix state.When here in use, " half is pre-
Admixture " means that a part for the fuel needed for only stoichiometric(al) combustion can be by setting cartridge in a combustion chamber
It is provided.Remaining fuel can be provided to the active flame of the end of combustion chamber.In the test carried out, gas
Body is from the gap in the gas line in combustion chamber or opening（Away from outlet）It is injected into combustion chamber and observes,
Significantly reduced in gas pressure（Gap is much larger than nozzle bore）While, NOx emission and flame anchor station are uninfluenced.Such as by
The scope of the cone angle measured by acute angle extended from the circumference of combustion chamber towards center line can be between 0 and 90 degrees.Such as
Shown, the angle is about 13 degree.On the basis of experiment, we determined that, flame dynamic, stability and discharge all in accordance with by
Vortical air flow（And the equally vortex quantity near combustor exit）The size and location of the recirculation regions formed
And strong variations.
In order to reduce carbon monoxide emission, burner 300 can be operated with reference to cover body 500, as shown in Figure 5.Cover body 500
The outside of burner 300 is may be added to help to reduce the carbon monoxide from burner.In the embodiment shown, cover
Body 500 has cylindrical shape, and the cylindrical shape two ends are open and are coaxially disposed relative to combustion chamber 306.Cover body 500
Diameter is more than the diameter of combustion chamber 306 to form annular volume 502 between them.During operation, produced by burning
Waste gas is at least temporarily with enclosed in annular volume and will be present in carbon monoxide therein to provide（CO）It is further oxidized to
Carbon dioxide（CO2）Chance.In the embodiment shown, although the use of cover body 500 may make due in annular volume 502
NOx generation increases produced by the increased residence time of burning gases and increased flame temperature, but CO discharges pass through
CO is further oxidized to CO2And reduce so that can be by adjusting the size and other structures feature of cover body 500（For example, cover body
Diameter and/or length）And optionally control the balance between NOx and CO generations.When the length increase of cover body, hot fuel
The temperature of gas and the residence time increase, this by cause CO discharge reduction and NOx emission increase.Similarly, cover body is worked as
Diameter increase when, the temperature reduction of fuel gas is discharged so as to improve CO and reduces NOx emission.
Maintained in order to which NOx is produced under desired low rate, the part of cover body can keep open 1100.In burner
Embodiment in, create the open area of cover body by forming hole in the cover body of the upstream of the base portion of flame.In cover body
Open area allows fuel gas to be sucked into by eddy flow in flame and reduces flame temperature in the base portion of flame, herein,
Form sizable part of total NOx from burner.During operation, the fuel gas at the base portion of flame is by peak
The reduction of value flame temperature produces to slow down NOx, while cover body formation promotes the closing for carbon dioxide by Oxidation of Carbon Monoxide
Space.In one exemplary embodiment, the low NOx drainage of the burner without cover body（Below 20ppm NOx）With with cover
The low CO discharges of the burner of body（As little as 0ppm CO）Combination, while being lighted a fire using 15% excess air.When being inhaled into flame
FGR be directed to when producing the flame base with maximum effect to NOx, due to being produced for equal NOx for fuel
Gas is recycled（FGR）（Which depict the part for the fuel gas being recycled in flame）Gross space can reduce, so
Flame holding is improved using cover body.Cover body also creates the high-temperature area on auto-ignition temperature in flame periphery,
This constantly again ignition flame so that its is highly stable.For specific point fire environment, the opening in cover body can be passed through
The position in region and the size of open area accurately control the amount of the FGR in suction flame.At least the one of burner
In individual embodiment, the flow region in the hole formed in cover body can be adjusted in outside（For example, passing through gate or other types
Valve）So as to dynamically control to be sucked into flame and/or surrounding FGR amount.
Various additional experiments are carried out to determine to influence the parameter of operation of combustors and efficiency.For example, in order to study along
The vortex distributed number of the length of combustion chamber simultaneously understands influence of the convergence type cone to vortex quantity, with and without convergence type
Numerical modeling is performed on the annulus of cone.As a result graphically show in figure 6 and figure 7.As that can see in figure 6
Arrive, when as shown in horizontal axis and air intake（For example, air intake 302）Distance increase when, be arranged on vertical axes
Reduce to length index of the vortex quantity along combustion chamber on line.When addition convergence type cone（For example, 309）When, vortex is special
Sexually revise, and when the every other structure of burner is kept with having the identical structure still burner without convergence type cone
The reduction of vortex quantity is exported when identical.It is also tested for the influence of convergence type cone to determine its influence for NOx emission, anticipates
Other places finds that NOx emission reduces 50% when convergence type cone is added into combustion chamber.Add the extra of convergence type cone
Windfall effect is the improvement for adjusting ratio, and the regulation is than from 10 for straight combustion chamber:1 improves to for convergence type cone
Combustion chamber be more than 40:1.
In order to further study validity of the convergence type cone to the performance of burner, further shorten the length of burner
To check combustor stability using CFD simulations and physical testing.As a result show, by using convergence type cone gradually
Ground reduces outlet diameter, and when outlet vortex quantity remains basically unchanged, burner keeps stable（That is, without inside gas
Stream）.The CFD simulations of the VELOCITY DISTRIBUTION in combustion chamber are shown in Fig. 8 A and Fig. 8 B, wherein, for 0.4m and 0.2m length（No
The length of convergence type cone including about 75cm）Combustion chamber show velocity field.As shown in Fig. 8 A and Fig. 8 B, with not
Vortex decay with the burner of length is stablized after a given distance so that in the exit of each burner, in convergence type
At cone, vortex quantity is equal.Fig. 9 is the curve of the identical vortex quantity on normalized combustor length.
In order to determine shower nozzle（Air intake）Influence of the quantity to the performance of burner, perform simulation and test so as to than
Relatively there is the burner of two and four shower nozzles.The result of the research shown in Figure 10 curve map, wherein, relative to burning
Device length depicts vortex quantity on vertical axis, and combustor length is drawn on a horizontal axis.Acquired data point quilt
It is depicted as curve.First curve 902 is represented for two shower nozzles（Air intake）Burner acquired in information, and
Second curve 904 is represented for four shower nozzles（Air intake）Burner acquired in information.In two burners,
The diameter of air intake is scaled to maintain substantially uniform air velocity at the exit opening of burner.Such as in Figure 10
In it can be seen that outlet vortex quantity be kept, and as described above therefore it is also contemplated that maintain combustor stability and NOx row
Put.On the basis of these experiments, it is conceivable, that burner dimensions can be set to utilize single shower nozzle（Air intake）
Keep desired vortex quantity.
It has been determined that uniform or general symmetry distribution of the shower nozzle around burner can promote efficient behaviour
Make.As shown in Figure 11 A and Figure 11 B, the alternate embodiment 1000 of burner includes air distribution manifold 1002, and its cross section shows
Go out in Figure 11 B.Similar to burner 300（Fig. 3 A- Fig. 3 D）, burner 1000 includes cylindricality combustion chamber 106, in the implementation
The combustion chamber is constituted by two sections in example：Base section 1004 and end segments 1006, the end segments 1006 yet forms both exit opening 308
With frustoconical outlet 309.A pair of flanges 1008 is connected to base section and end segments 1004 and 1006, and these sections can be by difference
Material be made, such as mild steel be used for base section 1004, and stainless steel be used for end segments 1006.
Single air entry apertures 1010 are fluidly connected to two shower nozzles by the distribution manifold 1002 in illustrated embodiment
Exit opening 1012.Air can be provided from hair-dryer or other air-sources to air entry apertures 1010 during operation.Two
Each in individual spray outlet opening 1012 is formed in the end of corresponding shower nozzle air duct 1014, shower nozzle air duct
1014 have the main shaft 1016 that the diameter D relative to combustion chamber 306 is substantially tangentially set with certain deviation amount.Ring-type is led to
Road 1018 around combustion chamber 306 a part of periphery extend so as to by single air openings 1010 and two shower nozzle air ducts
1014 fluidly interconnect.Can optionally set the overall shape and shower nozzle air duct 1014 of annular channel 1018 along
The placement of annular channel 1018, to provide each flat from air openings 1010 by two spray outlet openings 1012
Weighing apparatus, uniform air stream.
In the embodiment shown, manifold 1002 is by thin-walled piece metal construction and is configurable to include with panel and backboard
Two coaxial cylinders structure to surround hollow cylindrical air chamber, single air intake and two spray outlets formation are in this
In void column shape air chamber.Manifold is designed such that burner body is disposed coaxially in manifold, and the shower nozzle of burner
At mid-plane between the backboard and panel of manifold.The spray outlet 1012 of manifold is positioned such that them away from each other
180o is set, and a spray outlet is away between entrance 70o-80o, another spray outlet away from entrance 100o-110o it
Between, but other angles can be used.In one embodiment, these angles are respectively 75o and 105o.Pass through physics and analysis
The combination of test, for example, using calculating hydrodynamic（CFD）Model, determines these angular ranges to obtain by each shower nozzle
Approximately equalised flowing and pressure drop.
Figure 12 illustrates the alternate embodiment 1020 for the cover body being arranged on around burner 1000.In this illustration,
Cover body 1022 is arranged on around the open end of combustion chamber 306, similar to the cover body 500 shown in Fig. 5, but in the embodiment
In, cover body 1022 includes multiple windows 1024 along the circumference formation of cover body 1020, its total earth's axis around exit opening 308
To alignment.Each of window 1024 has the shape of general rectangular, the corner with sphering, and allows fluid in operation
Period passes through from it.Size and size based on each window, the open area energy available for each window 1024 of fluid stream
Enough it is fixed, or can be adjusted, embodiment as shown in Figure 12.In this embodiment, with hollow cylindrical shape
Outer surface of the collar 1026 along cover body 1022 be mounted slidably.The collar 1026 has leading edge 1028, when the collar is moved,
Leading edge 1028 is moved so as to optionally manually or by the effect of actuator 1030 towards or away from burner 1000
A part for the flow region provided by window 1024 is provided, the operating condition of burner 1000 is accordingly dependent on and effectively controls
System is for the available flow region of fluid stream by cover body 1022.Control by actuator 1030 to the opening of window 1024
It can be automatically carried out based on the operating condition of burner, for example, flame temperature, fuel flow rate, air themperature, discharge etc.
Deng.
Term " one " is describing the upper of the present invention with " one " with the use of "the" and " at least one " and similar reference
Hereinafter（Especially in the context of following claims）Covering odd number and plural form should be interpreted, unless
It is otherwise indicated herein or otherwise clearly contradicted.Term " at least one " after the list of one or more projects
Use（Such as " in A and B at least one "）A project selected from Listed Items should be construed as to imply that（A or B）Or
Two or more any combination of person's Listed Items（A and B）, unless indicated in addition herein or obvious with context
Ground contradiction.Term " comprising ", " having ", "comprising" and " containing " should be interpreted open-ended term（I.e., it is meant that " including
But it is not limited to "）, unless otherwise instructed.The reference of number range herein is intended merely as individually representing to fall into the scope
The shorthand method of interior each individually numerical value, unless indicate in addition herein, and each individually numerical value is included to explanation
As it is individually hereby incorporated in book.All methods described herein can be performed unless herein in any suitable order
In indicate in addition or with context significantly contradiction in addition.Any and all examples or provide herein it is exemplary
Language（For example, " such as "）Use be meant only to that the present invention is better described, and do not suggest that the limit to the scope of the present invention
System, is protected unless the context requires otherwise.Language in the description is not necessarily to be construed as indicating that any key element that is not claimed is implementation
It is essential to the invention.
The preferred embodiments of the present invention are described herein, including to being used to perform the present invention's known to the present inventor
Optimal mode.When having read description above, the variation of those preferred embodiments can for those of ordinary skill in the art
To become obvious.Inventor, which is expected technical staff, can suitably use these variations, and inventor is intended to different from this
Method described in text implements the present invention.Therefore, the present invention in the appended claims as allowed by applicable law including drawing
The all modifications example and equivalent for the theme stated.Moreover, any combination of the above-mentioned key element in its all possible variation
As included by the present invention, unless indicated or be clearly contradicted by context in addition in addition herein.
Claims (20)
1. a kind of burner, including：
Combustion chamber, the combustion chamber has the substantially a hollow cylindrical shape extended along center line and has closure end；
Cartridge, the cartridge can be connected to fuels sources and with the inside and the fuel source for making the combustion chamber
At least one opening of body connection so that fuel can be from the fuels sources be delivered to the inside of the combustion chamber；
At least one air intake, at least one described air intake is configured to provide air stream to the combustion chamber
In portion, the air stream is set and is configured to form vortex structure in the combustion chamber.
2. burner according to claim 1, wherein, the combustion chamber is configured to maintain the vortex structure along institute
State length of the center line by the combustion chamber so that the fuel from the cartridge is mixed with the air stream, and from
The open end delivering air and the vortex mixture of fuel of the combustion chamber.
3. burner according to claim 1, further comprises convergence type nozzle, the convergence type nozzle is arranged on and institute
At the open end for stating the relative combustion chamber in closure end.
4. burner according to claim 1, wherein, at least one described air intake be configured to relative to it is described
The circular cross section of the adjacent combustion chamber in closure end sprays the air stream in the tangential direction so that the air stream
Momentum component is respectively provided with a radial direction and an axial direction relative to the center line.
5. burner according to claim 1, further comprises extra air intake, the extra air intake will
Extra air stream is provided into the combustion chamber.
6. burner according to claim 1, wherein, the cartridge is arranged in the combustion chamber and along described
Combustion chamber generally coaxially extends.
7. burner according to claim 1, wherein, the cartridge is configured to the circle relative to the combustion chamber
Cross section is in the tangential direction by fuel injection into the combustion chamber.
8. burner according to claim 7, wherein, the air stream and the fuel are provided in the opposite direction
Into the inside of the combustion chamber.
9. burner according to claim 1, further comprise air distribution manifold, the air distribution manifold have with
The air entry apertures that air distribution channel is in fluid communication, the air distribution channel is fluidly opened at least one air intake
Put.
10. burner according to claim 9, wherein, the air distribution manifold, which has, to be arranged on and the closed end
Substantially a hollow cylindrical shape around the adjacent combustion chamber in portion, the air distribution manifold is internally formed around described
Combustion chamber extends and around the annular channel in center annular portion, and wherein, at least one described air intake is formed
Extend through the straight channel in the center annular portion between the inside of the annular channel and the combustion chamber.
11. burner according to claim 10, wherein, the second straight channel formation of second air intake is limited described
In center annular portion, second straight channel oriented parallel at least one described air intake and with described at least one is empty
The skew of gas entrance is set so that the circle of at least one described air intake and second straight channel relative to the combustion chamber
Cross section with an offset relatively tangentially.
12. burner according to claim 11, wherein, the periphery in the combustion chamber, at least one described sky
Gas entrance is arranged between 70o-80o relative to the air entry apertures, and second straight channel is relative to the sky
Gas entrance opening is arranged between 100o-110o.
13. burner according to claim 1, further comprises cover body, the cover body is arranged on and the closure end
Around the open end of the relative combustion chamber.
14. burner according to claim 13, wherein, the cover body has generally cylindrical shape and formation and institute
State multiple openings that the open end of combustion chamber is axially aligned.
15. burner according to claim 14, further comprise the collar, the collar slideably selectively along
The cover body is set, wherein, the collar is configured to cover each in the multiple opening at least in part.
16. burner according to claim 1, wherein, the burner includes a pair or two pairs of relative air intakes,
Each pair air intake is arranged parallel to each other and set with an offset distance so that each air intake is relative to the combustion chamber
Circular cross section provides the air stream in the tangential direction.
17. burner according to claim 1, wherein, the combustion chamber forms the opening relative with the closure end
End, the open end includes forming the exit opening of the end in convergence type nozzle.
18. a kind of method for operating burner, including：
The combustion chamber with substantially a hollow cylindrical shape is provided, the combustion chamber limits closure end and open end, described
Combustion chamber limits internal volume wherein；
By at least one air stream in the tangential direction of the circular cross section of the combustion chamber adjacent with the closure end
Injection is into the internal volume；
The eddy flow of at least one air stream is introduced in the combustion chamber；
The fuel stream is provided into the combustion chamber The fuel stream and the eddy flow of at least one air stream are mixed
To form the eddy flow of combustible mixture；
The eddy flow of the combustible mixture is discharged from the open end of the combustion chamber；And
When the eddy flow of the combustible mixture burns, permit when the combustible mixture is discharged from the combustion chamber
Perhaps eddy flow of at least a portion of the combustion product produced by the combustible mixture back into the combustible mixture
In.
19. method according to claim 18, wherein, the combustion extended by the internal volume along the combustion chamber
Expects pipe provides the The fuel stream.
20. method according to claim 18, wherein, the The fuel stream be provided as relative to closure end phase
The circular cross section of the adjacent combustion chamber is tangentially entered the stream in the inner space.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462063037P | 2014-10-13 | 2014-10-13 | |
| US62/063037 | 2014-10-13 | ||
| PCT/US2015/055278 WO2016061067A1 (en) | 2014-10-13 | 2015-10-13 | Swirl jet burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107002988A true CN107002988A (en) | 2017-08-01 |
Family
ID=55655190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580068008.4A Pending CN107002988A (en) | 2014-10-13 | 2015-10-13 | Revolve jet combustion device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20160102857A1 (en) |
| CN (1) | CN107002988A (en) |
| WO (1) | WO2016061067A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705166B (en) * | 2016-12-27 | 2018-11-27 | 美的集团股份有限公司 | Smoke evacuation component and fume extractor |
| CN111981481B (en) * | 2020-08-26 | 2024-04-26 | 沈齐晖 | Spin mixing type burner and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3200870A (en) * | 1961-11-27 | 1965-08-17 | Harvey H Hanley | Double vortex combustion chamber apparatus |
| CN1066111A (en) * | 1991-03-25 | 1992-11-11 | 福斯特·惠勒能源公司 | The burner apparatus and method of burning low-volatility fuel |
| CN1199837A (en) * | 1997-05-17 | 1998-11-25 | Abb研究有限公司 | Combustion chamber |
| CN101881439A (en) * | 2009-04-29 | 2010-11-10 | 巴布科克和威尔科克斯能量产生集团公司 | Living beings center air blast burner |
| CN203203026U (en) * | 2013-02-21 | 2013-09-18 | 北京北机机电工业有限责任公司 | Combined cyclone combustion chamber |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133108A (en) * | 1975-05-15 | 1976-11-18 | Nippon Kokan Kk <Nkk> | A swirl burner for hot stoves |
| US5014631A (en) * | 1988-06-09 | 1991-05-14 | Jgc Corporation | Cyclone furnace |
| US5365865A (en) * | 1991-10-31 | 1994-11-22 | Monro Richard J | Flame stabilizer for solid fuel burner |
| KR100830316B1 (en) * | 2002-08-09 | 2008-05-19 | 제이에프이 스틸 가부시키가이샤 | Tubular flame burner, combustion controlling method and apparatus therefor |
-
2015
- 2015-10-13 WO PCT/US2015/055278 patent/WO2016061067A1/en active Application Filing
- 2015-10-13 CN CN201580068008.4A patent/CN107002988A/en active Pending
- 2015-10-13 US US14/881,908 patent/US20160102857A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3200870A (en) * | 1961-11-27 | 1965-08-17 | Harvey H Hanley | Double vortex combustion chamber apparatus |
| CN1066111A (en) * | 1991-03-25 | 1992-11-11 | 福斯特·惠勒能源公司 | The burner apparatus and method of burning low-volatility fuel |
| CN1199837A (en) * | 1997-05-17 | 1998-11-25 | Abb研究有限公司 | Combustion chamber |
| CN101881439A (en) * | 2009-04-29 | 2010-11-10 | 巴布科克和威尔科克斯能量产生集团公司 | Living beings center air blast burner |
| CN203203026U (en) * | 2013-02-21 | 2013-09-18 | 北京北机机电工业有限责任公司 | Combined cyclone combustion chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016061067A1 (en) | 2016-04-21 |
| US20160102857A1 (en) | 2016-04-14 |
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