CN102057221A - Gas flame stabilization method and apparatus - Google Patents
Gas flame stabilization method and apparatus Download PDFInfo
- Publication number
- CN102057221A CN102057221A CN2008801297573A CN200880129757A CN102057221A CN 102057221 A CN102057221 A CN 102057221A CN 2008801297573 A CN2008801297573 A CN 2008801297573A CN 200880129757 A CN200880129757 A CN 200880129757A CN 102057221 A CN102057221 A CN 102057221A
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- burner
- air
- heat exchanger
- opening
- burning
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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
-
- 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
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/03005—Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/101—Flame diffusing means characterised by surface shape
- F23D2203/1012—Flame diffusing means characterised by surface shape tubular
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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
A burner includes: a body defining an interior cavity; a burning surface located in the body and defining, at least in part, the interior cavity; a defusing surface located on an exterior portion of the body; ports on the body extending through the defusing and burning surfaces and configured to provide fluid communication between the interior cavity and ambient air outside the body; and an opening larger than at least one of the ports, the opening providing fluid communication between the interior cavity and a space outside of the body. A method of burning a gas and reducing acoustic feedback in a combustion device are also described.
Description
Technical field
The method and apparatus that present invention relates in general to be used for stabilizing gas flame and reduce the NOx discharging.More specifically, the present invention relates to be used at the cavity combustion air of burner and the method and apparatus of fuel mixture.
Background technology
Many family expenses and commercial burner as stove, water heater, gas-drying apparatus, boiler, absorption heat pump, stirling engine and other device, often use burner to come combustion air and fuel mixture to produce heat.This fuel can comprise natural gas, propane or other fuel that is fit to.Usually burner is positioned in the combustion chamber and the premix of air and fuel is offered burner and be used for burning.
Fig. 1 is the example of typical burner.As shown in fig. 1, burner 10 is normally columnar, but typical burner can comprise other shape.The outside of cylinder is a burning surface 12, and air and fuel mixture will burn on burning surface 12.One end of cylinder is an end cap 14.The other end can comprise flange 16, and flange 16 can comprise fastener hole 18, and bolt or other fastening fastener hole 18 that extends through are to be fixed to supporting construction with burner 10.
Burning surface 12 comprises blow vent 20.Blow vent 20 normally can be approximately and the similar wide elongated slits of the wall thickness of burner 10.For example, slit can be the half mm wide millimeters long of quintupling usually, but certainly other size is used for blow vent.The inside 22 of burner 10 comprises diffusing surface, and this diffusing surface be can't see in the visual angle in Fig. 1.
Air and fuel mixture are fed into burner 10 in the direction of arrow A and flow into the openend of burner 10 and flow into the inside 22 of burner 10.Air and fuel mixture are discharged by blow vent 20 in the direction of arrow B then.Although the direction of arrow B just is shown along left and right directions, those skilled in the art can understand the air mixture and will radially pass by all blow vents 20.Igniter will be lighted air and fuel mixture, and it will burn on the burning surface 12 of burner 10.When air and fuel mixture burning, will radially give off heat from burner 10 along all directions similar to arrow B.The hot gas that produces along with burning moves in the direction of arrow B, and heat also moves by convection current.
If it is too fast that air and fuel mixture are supplied with, then air and fuel mixture may be faster than the burn rate of fuel by the speed of blow vent 20 discharges.In this case, burning surface 12 and burner 10 that burning may break away from burner 10 may experience flame-out (blow out), and this is that burning stops and the situation of fray-out of flame.Flame-out may occurring in the regional area at indivedual blow vents place, and under given conditions flame-outly may be spread or also may occur in other place on the burning surface 12.Therefore, for the combustion characteristics that reaches expectation with avoid flame-out, must careful control air and fuel mixture.
Fig. 2 illustrates the cross section that is positioned at the typical burner 10 in the heat exchanger 54.Burner 10 can be fixed on the burner 55 by the securing member 52 that is connected to flange 16.Securing member 52 can be connected directly to burner 55, perhaps in some embodiment as shown in Figure 2, securing member 52 can be connected to air supply line 64, and air supply line 64 is configured to air and fuel mixture are supplied to burner 10.Air and fuel mixture enter burner 10 in the direction of arrow A.Air and fuel mixture are spread by diffusing surface 24 in the inside 22 of burner 10 and discharge from blow vent 20 in the direction of arrow B.Air and fuel mixture burn on burning surface 12, generate heat simultaneously to be delivered to heat exchanger 54.Heat exchanger 54 comprises that with the pipe shown in the cross section 56 pipe 56 is filled with the fluid of this pipe 56 of flowing through.Along with the hot gas that generates by the burning of air and fuel mixture cross and pass through pipe 56 around, pass pipe 56 from the heat of hot gas and flow into by the mobile fluids of pipe 56.After hot gas is crossed pipe 56, can move in the direction of arrow E and discharge via exhaust outlet 60.
The burner 10 of combustion chamber 58 that is arranged in heat exchanger 54 is spaced apart with pipe 56 usually, will manage 56 outsides that are positioned at after-combustion district 62.Although burning usually occurs on the burning surface 12, in the after-combustion district chemical reaction takes place still.For example, in the after-combustion district, CO is transformed into CO
2Example for the typical after-combustion district 62 of household electrical appliance is to have about two inches between burning surface 12 and pipe 56.Certainly, the size in after-combustion district 62 depends on many factors, comprises fuel and fuel firing rate (rate of fuel bring burned) and other factor of the size of burner and capacity, use.
Just as understood by the skilled person in the art, not only air and the fuel mixture speed that enters burner 10 can influence combustion characteristics, and as burning when taking place temperature and the factors such as temperature in after-combustion district 62 also can influence combustion characteristics.Another factor that influences combustion characteristics is come the feedback of the acoustic resonance of automatic heat-exchanger 54.Sometimes vibration or the resonance with combustion chamber 58 is called acoustic feedback, and it also can influence chemical reaction that takes place in the after-combustion district 62 and the burning that takes place on burning surface 12.
The current emulative and consideration environment aspect is constantly exerted pressure to the product as burner, to raise the efficiency and to reduce discharging.Because to obtain the more performance parameter with nowadays known combustion technology is very difficult, therefore improves these performance parameters and become and had more challenge.When keeping or improving the burner Performance Characteristics, reach the limit of emission and the demand of efficient and become difficult more, wherein the Performance Characteristics of burner for example is adjusting range, flame holding, firing characteristic, burner is loaded and the elimination of resonant combustion noise or minimizing etc.
Therefore, a kind of burner need be provided, this burner can improve the performance parameter about emission demand and efficient, and keeps as the burner load of the firing characteristic of the adjusting range of expectation, flame holding, expectation, expectation, and the burner Performance Characteristics of the expectation that reduces or eliminates of resonant combustion noise.
Summary of the invention
The present invention has satisfied above-mentioned requirement to a great extent, wherein on the one hand, the method and apparatus that provides in certain embodiments improved burner efficient, reduced the discharging of not expecting and kept firing characteristic, the expectation of flame holding, the expectation of adjusting range, raising as expectation the burner load, and the resonant combustion noise desired characteristics such as reduce or eliminate.
A kind of method of burning gases is provided according to one embodiment of present invention.This method comprises: make air and fuel mixture go into inner chamber in the burner by the orifice flow in the burner; Air and fuel mixture are burnt on the inner surface that limits inner chamber at least in part; And make heated gas move on to the outside of burner via the hole the burner from inner chamber.
According to another embodiment of the present invention, provide a kind of burner.This burner comprises: main body, and it is limited with inner chamber; Burning surface, it is positioned in the main body and limits inner chamber at least in part; Diffusing surface, it is positioned on the outside of main body; Blow vent on the main body, it extends through diffusing surface and burning surface and is configured to provides fluid to be communicated with between the surrounding air of inner chamber and main body outside; And opening, greater than in the blow vent at least one, this opening provides the fluid between the space outside inner chamber and the main body to be communicated with.
According to still another embodiment of the invention, provide the method for a kind of reduction: the concentrated flow path of the hot gas that is formed for producing in the burner to the acoustic feedback of burner; Heat exchanger is positioned in the flow path to collect the heat of hot gas; Reach gap, the connector of expanding from burner towards heat exchanger, reach in the flow path that is positioned between burner and the heat exchanger the connector that shrinks from burner towards heat exchanger.
In order to understand herein detailed description better, and, quite broadly to have summarized specific embodiment of the present invention in order to know from experience current contribution better to prior art to specific embodiment of the present invention.Certainly, below will describe additional embodiment of the present invention, and it will form the theme of claims of the present invention.
Aspect this, before at least one embodiment of the present invention is explained in detail, be to be understood that propose in the details that do not limit the invention to its structure in the application of the present invention and the following specification or figure shown in the layout of parts.The present invention can have the embodiment except described embodiment, and can put into practice in a different manner and realize.It should also be understood that herein the wording used and term and summary are for purpose of description and should be considered to limit the present invention.
Thereby those skilled in the art will realize the basis that can easily the basic conception of disclosure text be used as the method and system of other structure of design, realization purposes more of the present invention.Therefore, under its situation without departing from the spirit and scope of the present invention, claim is considered as comprising that this this equivalent constructions is important.
Description of drawings
Fig. 1 is the stereogram that typical burner is shown.
Fig. 2 is the sectional view that comprises the typical burner of heat exchanger and burner.
Fig. 3 comprises the stereogram of the combustion chamber of burner according to an embodiment of the invention.
Fig. 4 is the stereogram of burner according to another embodiment of the present invention.
Fig. 5 is the sectional view that comprises according to the combustion chamber of the burner of the embodiment of the invention.Combustion chamber and burner fluid are connected to heat exchanger.
Fig. 6 illustrates the side view according to the burner that is connected with heat exchanger with collapsible tube according to the present invention.
Fig. 7 illustrates the sectional view according to the burner that is connected with heat exchanger with convergent divergent channel according to the present invention.
The specific embodiment
Describe according to embodiments of the invention now with reference to accompanying drawing, in the whole text in similar drawing reference numeral refer to similar part.Burner 30 according to an embodiment of the invention has been shown among Fig. 3.From some aspects, this burner 30 is similar with the burner shown in Fig. 1.Yet the burner 30 shown in Fig. 3 has some crucial features.
Diffusing surface 44 is arranged on the outside of burner 30.In some embodiments of the present invention, diffusing surface 44 can be made by stainless steel, yet, can use any suitable material according to the present invention.
As shown in Figure 3, burner 30 can be positioned in the compression chamber 46.Compression chamber 46 shown in Fig. 3 is a signal and is not the concrete geometry that is used to describe compression chamber 46.Can use any suitable geometry according to the present invention.Air inlet 48 offers compression chamber 46 with air and fuel mixture.The direction that air and fuel mixture are pointed out along arrow C flows into compression chamber 46 by air inlet 48 and flows into the inside 42 of burner 30 by blow vent 40.
According to some embodiments of the present invention, air inlet 48 and compression chamber 46 are pressed into malleation, so that air and fuel mixture are driven in the burner 30.Some embodiment can comprise fan or other device to 46 pressurizations of air inlet 48 and compression chamber of being used for that is positioned at burner 30 upstreams.Other embodiment can comprise fan or other Pressure generator that is positioned at burner 30 downstreams.No matter air and fuel mixture are pressed into or are drawn out of by burner 30, can use burner 30.In air and fuel mixture are drawn out of embodiment by burner 30, it should be appreciated by those skilled in the art that can be under the situation that does not have compression chamber 46 air supply and fuel mixture.Can realize air and fuel mixture are offered any suitable device of burner 30 according to the present invention.
One denier air and fuel mixture have flowed into the inside 42 of burner 30 in the direction of arrow C by blow vent 40, the just burning in the inside 42 of burner 30 of air and fuel mixture.Air and fuel mixture can be lighted by any suitable ignition system.
The burning of air and fuel mixture occurs in the internal cavity 42 that is limited by burner 30.When air and fuel mixture in burner 30 after the burning, it is just overflowed through opening 50 from burner 30 in the direction of arrow D.
As seeing among Fig. 3, internal combustion surface 32 can have the much bigger surface area of surface area of ratio open 50.This characteristic is opposite with the burner shown in Fig. 1, the size roughly the same (being exactly roughly the same area) of burning surface 12 and heat release area among Fig. 1.On the burner 10 shown in Figure 1, heat is overflowed along the direction shown in the arrow B.Burning surface 12 approximately is 1 to 1 with the ratio of heat delivery surface 12.
Adopt the burner 30 shown in Fig. 3, burning surface 32 can have the much bigger surface area of area of ratio open 50, and wherein hot gas and heat are by opening 50 effusion burners 30.Hot gas and the concentrated effect (affect) of heat that this generates for the burner of sening as an envoy to by opening 50.Burning surface 32 is unrestricted in theory with the ratio of opening 50.
Fig. 4 is the stereogram according to another burner 30 of the present invention.Burner 30 shown in Fig. 4 is box-like.This burner 30 has and those similar blow vents 40 already described above.The direction that air and fuel mixture are pointed out along arrow C enters burner 30 via blow vent 40.Burner 30 shown in Fig. 4 can comprise the opening 50 more than, and wherein hot gas and heat can be passed through opening 50 effusion burners 30.Hot gas and heat can illustrate with irregular pattern by the opening 50 of its burner 30 of overflowing, and can be chosen to be used for to satisfy any requirement that application-specific proposes or be used to satisfy concrete needs with the shape of opening 50 of explanation burner 30.In addition, although two openings 50 have been shown in the burner of Fig. 4 30, also can use any amount of opening 50 as required.
The burner 30 of Fig. 4 combustion air and fuel mixture and in the direction of arrow D via opening 50 heat releases in the inside 42 of burner 30.
According to some embodiments of the present invention, the air and the fuel mixture that offer burner 30 comprise than the more substantial air of stoichiometry aequum of realizing burning.In certain embodiments, the amount that supplies to the air of burner 30 can be 1.1 to 1.5 times of stoichiometry aequum.In further embodiments, also can use other air-fuel ratio.In some embodiments of the invention, use 1.2 to 1.3 times stoichiometry required air quantity in burner, to produce blue flame.And can reduce the NOx discharging with blue flame.
Burn for 42 li by the inner chamber at burner 30, some burner 30 can obtain some advantages.For example, because when burning, burner unlikely experiences fire extinguishing, can increase the adjusting range of burner 30 in less space.If no matter because what reason (as unusual (anolomity) in the conveying in air and fuel mixture) stops and is not only fire extinguishing along the burning of any part of burning surface 32, burning on every side just the burning surface 32 of experience fire extinguishing indivedual blow vents or partly rekindle air and fuel mixture.
This feature can increase its adjusting range thus so that burner 30 has the reliability of increase when air and fuel mixture flow velocity are higher.On the other hand, by allow will more a spot of air and fuel mixture offer burner 30 and burner 10 still has reliable operation, also can increase adjusting range.When a small amount of or a large amount of air and fuel mixture were applied to burner 30, burner 30 can both burn away, and has increased its adjusting range thus.Since identical, flame holding in adjusting range, also improved.Adjusting range according to burner 30 of the present invention can be for 10: 1 or above 10: 1.
A spot of air and fuel mixture place in that infrared combustion takes place can pass through the Temperature Distribution retention flame.When flame be blue, when the air fuel mixture flow velocity is very low, the stable of flame appears in the temperature by the chamber in the burner 30.
Fig. 5 is the sectional view of the burner 30 that is connected with heat exchanger 66 fluids according to an embodiment of the invention.Burner 30 is installed in the compression chamber 46.Air and fuel mixture enter compression chamber 46 via air inlet 48.Air and fuel mixture are in malleation and move in the burner 30 via blow vent 40 in compression chamber 46.
Arrow C illustrates the moving direction of unburned air and fuel mixture.Air and fuel mixture burn in the inner room 42 of burner 30, and move through the path 72 of heat exchanger 66 in the direction of arrow D via burner outlet 50.When hot gas moved through the path 72 of heat exchanger 66, heat was passed sidewall 67 from hot gas and is moved to the fluid to be heated 68.
In some heat-exchange systems, the heat exchange path in path 72 and so on may be subjected to acoustic vibration and resonance as shown in Figure 5.The passage of passage 72 and so on can be molded as Helmholtz's (Helmholz) resonator and amplify vibration and/or acoustic resonance as shown in Figure 5.This vibration can cause the acoustic feedback to burner 30.
According to some embodiments of the present invention, between the opening 50 of burner 30 and path 72, there is gap 70 by heat exchanger 66.This gap 70 can help to prevent the acoustic feedback to burner 30.When hot gas moved through passage 72, they may produce vibration and acoustic resonance.These vibrations can be passed back towards burner 30.Gap 70 between burner and the path 72 can reduce to pass back the amount of the acoustic resonance of burner 30.By reducing acoustic feedback to burner 30, can control burning better in burner 30.
Because burning and after-combustion district are in chamber 42, the influence of the state in 46 pairs of chambeies 42 of heat exchanger 54 and combustion chamber/compression chamber is very little or not influence.
According to other embodiment of the present invention, shown in Fig. 6 and 7, be used to reduce to comprise that to other technology that the acoustic resonance of burner 30 is fed back use convergent divergent channel or collapsible tube are connected burner 30 with heat exchanger 66.
Fig. 6 shows the combustion chamber 46 with burner 30 that burning takes place.The direction that hot gas is pointed out along arrow D flows out also from burner 30 and flows towards the path 72 by heat exchanger 66.Burner 30 is connected to compression chamber 46 via flange 36.Shrink changeover portion or manage 74 the inside of burner 30 is connected with path 72 by heat exchanger 66.Shrink changeover portion 74 and can comprise and the similar flange of describing about burner 30 76 and 78, be connected in compression chamber 46 and heat exchanger 66 to allow shrinking changeover portion 74.
Opposite with shown in Fig. 6, the embodiment shown in Fig. 7 comprises the expansion changeover portion 80 that the inside 42 of burner 30 is connected with fluid path 72 in the heat exchanger 66.This expansion changeover portion 80 can be the pipe that has with those similar flanges 82 described above and 84.This flange can comprise and is used to be provided with securing member will expand the hole that changeover portion 80 is connected to compression chamber's 46 heat exchangers 66.Perhaps flange 84 also can allow securing member to be connected to the flange 36 of burner 30.Can use any suitable manner that connects expansion changeover portion 80 or shrink changeover portion 74 as shown in Figure 6 according to the present invention, and flange is not all to be necessary for all embodiment.
The contraction changeover portion 74 of Fig. 6 and the expansion changeover portion of Fig. 7 80 play similar effect with the gap 70 shown in Fig. 5.Changeover portion 74 and 80 has reduced the amount of the acoustic resonance of passing burner 30 back of generation in heat exchanger 66.The changeover portion identical with the diameter of the inside of fluid path 72 and burner with the inside diameter of changeover portion compared, and gap 70 or contraction changeover portion 74 or expansion changeover portion 80 have shown the amount that can effectively reduce acoustic resonance.In some aspects, the gap shown in Fig. 5 70 can be regarded as the infinitely-great expansion changeover portion of diameter.
According to some embodiments of the present invention, in the fluid path 72 of heat exchanger 66, can not produce the burning of hot gas, but in the inside 42 of burner 30, burning and after-combustion district occur.The after-combustion district is remained on the temperature that can improve the hot gas in the after-combustion district in the burner 30.After-combustion district 62 among Fig. 2 is not included in the inside 42 of burner.Thereby, may be so not hot based on some factor after-combustion districts 62.
For example, the ratio on burning surface and the surface of discharging hot gas is about 1: 1 in the burner 20 of Fig. 2.Therefore, situation is not like that by concentrated as mentioned above for heat and hot gas, and heat delivery surface can be much higher with the ratio of burning surface in above-mentioned situation.
In addition, take place in after-combustion district 62 before whole chemical reactions, after-combustion district 62 as shown in Figure 2 may be with the pipe 56 of thermal output (lose) to heat exchanger.
Opposite with the burner of Fig. 2, shown in Fig. 3-7, will burn and the after-combustion district remains in the inside 42 of burner 10 according to the burner 10 of some embodiments of the present invention.By burning and the after-combustion district remains in the inside 42 of burner 10, heat and hot gas are by concentrated.In addition, before hot gas was discharged from the after-combustion district, hot gas can not be with thermal output to heat exchanger.By keeping the relatively after-combustion district of heat, make flame stabilization, and can realize that CO is to CO
2Transform more completely, reduce the CO discharging thus.In these cases, the NOx discharging can be seldom.In certain embodiments, the CO discharging can or be lower than 10ppm (no air (air free)) for 10ppm (no air (air free)), and the NOx discharging can or be lower than 10ng/J for 10ng/J.
Further advantage according to the burner 10 of some embodiment is easily heat and hot gas to be directed to desirable path.Can easily thermal steering be become to run into heat exchanger with expected angle.
Claims (21)
1. the method for burning gases comprises:
Make air and fuel mixture go into inner chamber in the described burner by the orifice flow in the burner;
Described air and fuel mixture are burnt on the inner surface that limits described inner chamber at least in part; And
Make heated gas move on to the outside of described burner by the hole the described burner from described inner chamber.
2. the method for claim 1 also comprises all basically burnings are included in the described chamber.
3. the method for claim 1 also comprises making one of them burning at least with blue flame and infra red flame of described air and fuel mixture.
4. the method for claim 1 also is included as described air and fuel mixture stoichiometry aequum more air than combustion fuel is provided.
5. method as claimed in claim 4 wherein, provides than the stoichiometry aequum of combustion fuel and has Duoed 50% air.
6. the method for claim 1 also comprises described heated gas is moved in the heat exchanger.
7. method as claimed in claim 6 wherein, is not burnt in the outside of described burner.
8. method as claimed in claim 6 also comprises making described heated gas move through gap between described burner and the described heat exchanger.
9. method as claimed in claim 6 also comprises making described heated gas move through in collapsible tube that the inside with described heater is connected with described heat exchanger fluid and the convergent divergent channel one.
10. the method for claim 1 also comprises the heater ambient air pressure that provides bigger than the air pressure in the chamber in the described heater.
11. a burner comprises:
Main body, described main part limitation has inner chamber;
Burning surface, described burning surface are arranged in described main body and limit described inner chamber at least in part;
Diffusing surface, described diffusing surface are positioned on the outside of described main body;
Blow vent on the main body, described blow vent extend through described diffusing surface and burning surface and be configured to provides fluid to be communicated with between the surrounding air of described inner chamber and described main body outside; And
Opening, described opening be greater than in the described blow vent at least one, and described opening provides the fluid between the space of described inner chamber and described main body outside to be communicated with.
12. burner as claimed in claim 11 also comprises the flange that is used for described burner is connected to supporting construction.
13. burner as claimed in claim 11 also comprises second opening, described second opening is greater than at least one of described blow vent, and described second opening provides the fluid between the space of described inner chamber and described main body outside to be communicated with.
14. burner as claimed in claim 11, wherein, described burner forms following shape usually: cylindrical shape, box-like, sphere, annular and U-shaped.
15. burner as claimed in claim 11, wherein, described burning surface is the opening of the burning surface of at least 1.4 units than 1.0 units with the ratio of the surface area of described opening.
16. burner as claimed in claim 11 also comprises burner, wherein said burner is arranged in the combustion chamber of described burner.
17. burner as claimed in claim 16, wherein, described burner is configured to provide air and fuel mixture with the pressure bigger than the pressure in the space in the described inner chamber to described burner, make described air and fuel mixture to flow into described inner chamber by described blow vent, and wherein, provide stoichiometry aequum more air than combustion fuel.
18. burner as claimed in claim 11 also comprises heat exchanger, described heat exchanger is positioned to and is configured to be defined for by the gas flow path of described opening from described inner room discharge.
19. burner as claimed in claim 18, wherein, the described opening of described burner and the opening in the described heat exchanger are separated by the gap.
20. burner as claimed in claim 18, wherein, opening in the described opening of described burner and the described heat exchanger is connected carrying out the conduit that fluid is communicated with between described inner chamber and the described heat exchanger by being configured to, and wherein said conduit is conduit that shrinks from described chamber and described heat exchanger and the conduit of expanding from described chamber towards described heat exchanger.
21. a reduction comprises the method for the acoustic feedback of burner:
The concentrated flow path of the hot gas that is formed for producing in the burner;
Heat exchanger is positioned in the described flow path to collect from the heat of described hot gas; And
With the connector of gap, expansion from described burner towards described heat exchanger, and the connector that shrinks from described burner towards described heat exchanger a described flow path that is positioned between described burner and the described heat exchanger in.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2008/007361 WO2009151420A1 (en) | 2008-06-13 | 2008-06-13 | Gas flame stabilization method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102057221A true CN102057221A (en) | 2011-05-11 |
| CN102057221B CN102057221B (en) | 2014-04-02 |
Family
ID=41416955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880129757.3A Expired - Fee Related CN102057221B (en) | 2008-06-13 | 2008-06-13 | Gas flame stabilization method and apparatus |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2315971A1 (en) |
| CN (1) | CN102057221B (en) |
| WO (1) | WO2009151420A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1402900B1 (en) * | 2010-11-24 | 2013-09-27 | Worgas Bruciatori Srl | BURNER WITH HIGH STABILITY |
| WO2016165994A1 (en) | 2015-04-17 | 2016-10-20 | Bekaert Combustion Technology B.V. | Inwardly burning surface stabilized gas premix burner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2182047A1 (en) * | 1995-07-28 | 1997-01-29 | Nicholas Pfeiffer | Burner apparatus with internal heat exchanger |
| EP0844436A1 (en) * | 1996-11-26 | 1998-05-27 | Worgas Bruciatori S.R.L. | Gas burner |
| ITMO20010086A1 (en) * | 2001-05-08 | 2002-11-08 | Worgas Bruciatori Srl | METHOD AND APPARATUS TO REDUCE NITROGEN DIOXIDE (NO2) EMISSIONS IN A CHIMNEY-FREE HEATING APPLIANCE |
-
2008
- 2008-06-13 CN CN200880129757.3A patent/CN102057221B/en not_active Expired - Fee Related
- 2008-06-13 WO PCT/US2008/007361 patent/WO2009151420A1/en active Application Filing
- 2008-06-13 EP EP08768404A patent/EP2315971A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP2315971A1 (en) | 2011-05-04 |
| CN102057221B (en) | 2014-04-02 |
| WO2009151420A1 (en) | 2009-12-17 |
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