EP1373799A1 - Brenner für ein gas/luft-gemisch - Google Patents
Brenner für ein gas/luft-gemischInfo
- Publication number
- EP1373799A1 EP1373799A1 EP02719999A EP02719999A EP1373799A1 EP 1373799 A1 EP1373799 A1 EP 1373799A1 EP 02719999 A EP02719999 A EP 02719999A EP 02719999 A EP02719999 A EP 02719999A EP 1373799 A1 EP1373799 A1 EP 1373799A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner according
- flame
- nozzle tube
- disks
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
- F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
-
- 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
- F23C99/00—Subject-matter not provided for in other groups of this subclass
- F23C99/006—Flameless combustion stabilised within a bed of porous heat-resistant material
-
- 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
- F23D14/12—Radiant burners
- F23D14/14—Radiant burners using screens or perforated plates
- F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
-
- 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
- F23D14/12—Radiant burners
- F23D14/16—Radiant burners using permeable blocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/108—Flame diffusing means with stacked sheets or strips forming the outlets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/10—Burner material specifications ceramic
- F23D2212/101—Foam, e.g. reticulated
Definitions
- the invention relates to a burner for a gas / air mixture.
- a burner for a gas / air mixture is known from DE 43 22 109 AI.
- the combustion takes place axially in a housing with a constant cross-section, which is completely filled with a porous material. There is no flame front emerging from the porous material. The combustion takes place exclusively within the space filled with the porous material. No free flames are formed that extend into the environment from an outer surface or interface of the porous agent.
- a burner is known from JP 59195022 A (Patent Abstracts of Japan), in which a tube provided with openings is radially surrounded by a cylinder body made of catalytic material. It is a surface burner, i.e. the flames extend from one surface to the surroundings.
- US 4,900,245 describes an infrared burner in which a nozzle tube is surrounded by a cylindrical element made from a ceramic foam.
- the cylindrical element serves to evenly distribute the gas on its surface.
- the gas is burned on the surface of the cylindrical element.
- a flame detector is provided on the surface. When the flame is extinguished, it is automatically re-ignited.
- DE 195 08 908 AI describes a burner tube in which a plurality of radially circumferential slots are provided. The flames emerge from the slots in a fan shape.
- a gas burner is known from GB 2 231 949 A.
- a combustible gas mixture is passed through a porous ceramic disc and burned.
- a layer sequence which is formed from flat and corrugated annular disks, can be arranged downstream of the disk in the flow direction. In this case, the gas is burned on an outer surface surrounding the layer sequence.
- EP 0 382 674 describes an infrared burner in which a porous layer formed from ceramic fibers is applied to a cylinder made from a wire mesh. This is also a surface burner. Other surface burners are e.g. known from DE 297 15 119 41 or US 4,679,528.
- the object of the invention is to eliminate the disadvantages of the prior art.
- a volume burner is to be specified which has an improved heat extraction and with which combustion of a gas / air mixture with low emission values can be carried out at the same time.
- Another goal is to provide a volume burner whose modulability is improved compared to known volume and surface burners.
- a burner for a gas / air mixture is provided with an inlet for the gas / air mixture.
- a downstream of the inlet nozzle tube is provided, the outer surface of which has a multiplicity of openings and wherein the nozzle tube is radially surrounded by a means for stabilizing the flame.
- the flame stabilizer describes the combustion chamber or a volumetric combustion zone.
- the burner according to the invention has excellent heat extraction. It is attributed to improved heat transfer through convection and radiation. On
- Gas / air mixture can be burned with particularly low emission values in the entire modulation range due to improved homogenization.
- gas / air mixture refers to a combustible gas, e.g. Natural gas, propane gas and the like , understood with air or another suitable oxidizing agent mixture, the mixing ratio being selected so that combustion is possible.
- the diameter of the openings provided in the nozzle tube is expediently chosen such that a flashback into the nozzle tube is not possible.
- the openings can have a diameter in the range from 0.5 to 2.0 mm, preferably 1.3 to 1.5 mm.
- the combustion of the gas essentially takes place on the average to stabilize the flame.
- no free flames are formed on an outer surface enveloping the means for stabilizing the flame.
- the flame stabilizer has the function of limiting the combustion chamber and, at the same time, equalizing and lowering the flame temperature. Another function is to stabilize the flame in the transition area between the nozzle pipe and the combustion chamber by means of a Increase in the number of Peclet by drop.
- the means for stabilizing the flame is not immediately surrounded by a housing. The heat can be released without hindrance. Because of the radial arrangement of the means for stabilizing the flame, a particularly large area for heat extraction is achieved.
- the coupling-out area can correspond, for example, to the area of a cylinder jacket.
- the radial arrangement of the means for stabilizing the flame also has the advantage that the expanding combustion gases can be quickly removed by means of a volume of communicating flow channels that increases radially outwards. There is no heat build-up in the flame stabilizing agent, which further improves heat extraction. Because of the radial widening of the cross-sections of the flow channels due to the radial arrangement of the flame stabilization means, the convection speed of the combustion gases slows down. The flame is thus additionally stabilized by fluid mechanics. The burner's modulability is further increased.
- a fan for transporting the gas / air mixture into the nozzle tube is advantageously arranged downstream of the inlet. This ensures that a sufficient amount of gas / air mixture is always fed through the nozzle tube to the means for stabilizing the flame.
- the nozzle tube can be formed from a refractory ceramic, which is preferably made from ceramic fibers.
- the refractory ceramic expediently has a porosity of 75 to 95 vol. % on. Such ceramics are characterized by durability in practical use. In particular, a ceramic produced using ceramic fibers has a long service life due to its particularly good breaking strength.
- the ceramic is expediently composed of approximately 50% by weight of aluminum oxide and 50% by weight of silicon oxide.
- the nozzle tube can of course also be made of other suitable materials, for example heat-resistant metals, quartz glass, glass ceramics, foam ceramics and the like. be made.
- the flame stabilizing agent can be a porous medium with a pore size that enables the formation of a flame.
- the means for stabilizing the flame is expediently formed from a plurality of ring disks which extend radially from the nozzle tube and are arranged at an axial distance from one another.
- the washers can be held on the nozzle tube by friction.
- the ring disks can be formed from first and second ring disks, wherein a ring radius of the first ring disks is smaller than the ring radius of the second ring disks.
- the ring radius of the second ring disks is expediently at least twice as large as the ring radius of the first
- ring radius is understood to mean the difference between an inner radius and an outer radius of the ring disk.
- the first and the second ring disks are alternately received on the nozzle tube in the axial direction.
- the alternating sequence of the first and second ring disks advantageously forms a radially inner first flame stabilization zone and a radially outer second flame stabilization zone without intermediate first ring disks.
- the Peclet number of the first flame stabilization zone is expediently smaller than the Peclet number of the second flame stabilization zone. The proposed increase in the number of Peclet from the inside out occurs when the prescribed Example discontinuous. Surprisingly, it has nevertheless been shown that the provision of two flame stabilization zones enables the realization of a burner with excellent dynamics.
- the Peclet number ideally increases radially from the inside outwards. In any case, the Peclet number is chosen so that in the
- Means for stabilizing the flame combustion takes place in the manner of a volume burner.
- the Peclet number of the nozzle tube is selected so that a flashback into the nozzle tube is impossible. Because of the definition of the Peclet number and the action and function of volume burners, reference is also made to DE 43 22 109 AI, the disclosure of which is hereby included.
- the surface of the ring disks is expediently corrugated, so that flow channels are formed between two adjacent ring disks from the nozzle tube to the outer peripheral edge of the ring disks.
- the wave crest lines of the waves run, preferably curved, from the center to the peripheral edge of the ring disks, so that between two adjacent ring disks from the nozzle tube to the outer peripheral edge
- Ring flow preferably curved, continuous flow channels are formed.
- flow channels are formed on the means for stabilizing, the cross section of which increases radially from the inside to the outside.
- the Peclet number expediently increases radially outwards on average for stabilization. It has been shown that such a design requires particularly good extraction of the heat generated by the combustion and an increase in the modulability. acts. Furthermore, it has been shown that the radial increase in the cross section from the inside to the outside can considerably reduce a sound emission caused by thermoacoustic excitation.
- the proposed burner is particularly quiet in operation. In particular, low-frequency vibrations do not occur, which can lead to destruction of the nozzle tube or the means for stabilizing the flame.
- the surface of the annular discs advantageously has a large number of further openings.
- the further openings can be rectangular, slit-like or round.
- the opening area of the further openings is expediently about 1 mm 2 .
- the ring disks can be made from a fire-resistant ceramic, preferably having a lattice-like structure. This can be a fabric made from mullite fibers, which is accommodated in a matrix formed from aluminum oxide.
- the ring disks are arranged between two further ring disks provided near the ends of the nozzle tube and made from a refractory ceramic.
- the other ring disks limit the combustion chamber. They have the function of thermal insulation. They are expediently made from a porous aluminum oxide ceramic, which, however, has no openings.
- the means for stabilizing the flame can also be made of a three-dimensional metal mesh, a porous ceramic or the like. be made.
- the means for stabilizing the flame is surrounded by a heat exchanger.
- the heat extracted from the means for stabilizing the flame is transferred with high effectiveness to a liquid medium circulating in the heat exchanger.
- the heat exchanger can in turn be surrounded by a housing.
- FIG. 1 is a schematic side view of a burner
- FIG. 2 shows a plan view of an annular disk according to FIG. 1,
- FIG. 3 is a perspective view of a burner
- Fig. 4 is a cross-sectional view of FIG. 3 and
- FIG. 5 shows a detailed view according to FIG. 4.
- an inlet 2 for a gas / air mixture is provided in a housing half-shell 1 of a blower (not shown in detail here).
- a blower outlet 3 is opposite a baffle plate 5 accommodated in a prechamber 4.
- the baffle plate 5 has the function of ensuring that the flow velocity at the inlet cross section 6 of a nozzle pipe 7 is as homogeneous as possible.
- the nozzle pipe 7 has a plurality of radially extending openings 8 with a diameter of approximately 1.0 to 2.0 mm. The openings 8 are evenly distributed over the outer surface of the nozzle tube 7.
- G -rl Di G ⁇ 03 ⁇ o ⁇ o ⁇ ⁇ G ⁇ o ⁇ 03 03 ⁇ 5 -H rH 4-JO • 5 G ⁇ ⁇ G 0 4-> 03 o ⁇ HG MH ⁇ G ⁇ G ⁇ 03 ⁇ X! G -rl X! N ⁇ C ⁇ > G CM
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10114903 | 2001-03-26 | ||
DE10114903A DE10114903A1 (de) | 2001-03-26 | 2001-03-26 | Brenner für ein Gas/Luft-Gemisch |
PCT/EP2002/003342 WO2002077525A1 (de) | 2001-03-26 | 2002-03-25 | Brenner für ein gas/luft-gemisch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1373799A1 true EP1373799A1 (de) | 2004-01-02 |
EP1373799B1 EP1373799B1 (de) | 2008-08-13 |
Family
ID=7679149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02719999A Expired - Lifetime EP1373799B1 (de) | 2001-03-26 | 2002-03-25 | Brenner für ein gas/luft-gemisch |
Country Status (7)
Country | Link |
---|---|
US (1) | US6997701B2 (de) |
EP (1) | EP1373799B1 (de) |
JP (1) | JP2004522128A (de) |
CN (1) | CN1535367A (de) |
AT (1) | ATE404819T1 (de) |
DE (2) | DE10114903A1 (de) |
WO (1) | WO2002077525A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116734246A (zh) * | 2020-10-09 | 2023-09-12 | 黄强初 | 一种全预混燃烧装置 |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1618336B1 (de) * | 2003-04-18 | 2011-06-29 | SGL Carbon SE | Porenbrenner mit siliziumkarbid-porenkörper |
DE102004057271B4 (de) * | 2004-11-26 | 2008-04-24 | Webasto Ag | Baugruppe für ein Heizgerät sowie Vefahren zur Herstellung derselben |
US20090165733A1 (en) * | 2007-12-26 | 2009-07-02 | Ferguson Mark A | Inwardly firing burner and uses thereof |
DE102009039276A1 (de) | 2009-08-28 | 2011-03-10 | Bekon Energy Technologies Gmbh & Co. Kg | Reaktormodul für endotherme Reaktionen sowie Reaktor mit einer Mehrzahl von solchen Reaktormodulen |
TWI450439B (zh) | 2009-10-22 | 2014-08-21 | Atomic Energy Council | 應用於高溫燃料電池之多孔性介質燃燒器 |
US11073280B2 (en) | 2010-04-01 | 2021-07-27 | Clearsign Technologies Corporation | Electrodynamic control in a burner system |
CN102798123B (zh) * | 2011-05-26 | 2016-05-04 | 中山炫能燃气科技股份有限公司 | 一种红外线金属发热体及其制作方法 |
SE536738C2 (sv) * | 2012-11-02 | 2014-07-01 | Heatcore Ab | Värmeväxlarplatta för plattvärmeväxlare, plattvärmeväxlare innefattande sådana värmeväxlarplattor och anordning för uppvärmning innefattande plattvärmeväxlaren |
KR101400834B1 (ko) * | 2013-01-23 | 2014-05-29 | 주식회사 경동나비엔 | 연소장치 |
US10386062B2 (en) | 2013-02-14 | 2019-08-20 | Clearsign Combustion Corporation | Method for operating a combustion system including a perforated flame holder |
US11460188B2 (en) | 2013-02-14 | 2022-10-04 | Clearsign Technologies Corporation | Ultra low emissions firetube boiler burner |
US10125983B2 (en) | 2013-02-14 | 2018-11-13 | Clearsign Combustion Corporation | High output porous tile burner |
CN104903647B (zh) | 2013-02-14 | 2018-02-02 | 克利尔赛恩燃烧公司 | 具有穿孔反应稳定器的燃料燃烧系统 |
US10571124B2 (en) | 2013-02-14 | 2020-02-25 | Clearsign Combustion Corporation | Selectable dilution low NOx burner |
CA2892234A1 (en) | 2013-02-14 | 2014-08-21 | Clearsign Combustion Corporation | Perforated flame holder and burner including a perforated flame holder |
US10119704B2 (en) | 2013-02-14 | 2018-11-06 | Clearsign Combustion Corporation | Burner system including a non-planar perforated flame holder |
US10458649B2 (en) | 2013-02-14 | 2019-10-29 | Clearsign Combustion Corporation | Horizontally fired burner with a perforated flame holder |
US11953201B2 (en) | 2013-02-14 | 2024-04-09 | Clearsign Technologies Corporation | Control system and method for a burner with a distal flame holder |
CN105531540B (zh) | 2013-09-23 | 2018-04-06 | 克利尔赛恩燃烧公司 | 采用多个有孔火焰保持器的燃烧器系统以及操作方法 |
CN105556210B (zh) | 2013-09-23 | 2018-07-24 | 克利尔赛恩燃烧公司 | 用于低nox燃烧的多孔火焰保持器 |
CN105579776B (zh) | 2013-10-07 | 2018-07-06 | 克利尔赛恩燃烧公司 | 具有有孔火焰保持器的预混燃料燃烧器 |
WO2015057740A1 (en) | 2013-10-14 | 2015-04-23 | Clearsign Combustion Corporation | Flame visualization control for electrodynamic combustion control |
CN105705864B (zh) | 2013-11-08 | 2017-10-03 | 克利尔赛恩燃烧公司 | 配备火焰位置致动的燃烧系统 |
EP3097365A4 (de) | 2014-01-24 | 2017-10-25 | Clearsign Combustion Corporation | Nox-armer rauchrohrkessel |
CN106103338B (zh) | 2014-02-14 | 2018-04-20 | 克利尔赛恩燃烧公司 | 具有有孔火焰保持器的顶烧式燃烧器 |
US9791171B2 (en) | 2014-07-28 | 2017-10-17 | Clearsign Combustion Corporation | Fluid heater with a variable-output burner including a perforated flame holder and method of operation |
US9885496B2 (en) | 2014-07-28 | 2018-02-06 | Clearsign Combustion Corporation | Fluid heater with perforated flame holder |
US9828288B2 (en) | 2014-08-13 | 2017-11-28 | Clearsign Combustion Corporation | Perforated burner for a rotary kiln |
US9702547B2 (en) | 2014-10-15 | 2017-07-11 | Clearsign Combustion Corporation | Current gated electrode for applying an electric field to a flame |
WO2016134061A1 (en) | 2015-02-17 | 2016-08-25 | Clearsign Combustion Corporation | Perforated flame holder with adjustable fuel nozzle |
WO2016134180A1 (en) * | 2015-02-18 | 2016-08-25 | Clearsign Combustion Corporation | Burner with a perforated flame holder support structure |
US10088153B2 (en) | 2015-12-29 | 2018-10-02 | Clearsign Combustion Corporation | Radiant wall burner including perforated flame holders |
EP3403026B1 (de) | 2016-01-13 | 2021-12-15 | ClearSign Technologies Corporation | Verbrennungssystem mit einem ersten und einem zweiten perforierten flammenhalter, getrennt durch einen spalt |
WO2017190080A1 (en) | 2016-04-29 | 2017-11-02 | Clearsign Combustion Corporation | Burner system with discrete transverse flame stabilizers |
US10514165B2 (en) | 2016-07-29 | 2019-12-24 | Clearsign Combustion Corporation | Perforated flame holder and system including protection from abrasive or corrosive fuel |
US10539326B2 (en) | 2016-09-07 | 2020-01-21 | Clearsign Combustion Corporation | Duplex burner with velocity-compensated mesh and thickness |
WO2018085152A1 (en) | 2016-11-04 | 2018-05-11 | Clearsign Combustion Corporation | Plasma pilot |
WO2018208695A1 (en) | 2017-05-08 | 2018-11-15 | Clearsign Combustion Corporation | Combustion system including a mixing tube and a perforated flame holder |
US11519635B2 (en) | 2018-08-24 | 2022-12-06 | Gas Technology Institute | Gas fired process heater with ultra-low pollutant emissions |
US11639792B2 (en) * | 2020-06-24 | 2023-05-02 | Rheem Manufacturing Company | Single-piece refractory for a water heating assembly |
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-
2001
- 2001-03-26 DE DE10114903A patent/DE10114903A1/de not_active Withdrawn
-
2002
- 2002-03-25 AT AT02719999T patent/ATE404819T1/de not_active IP Right Cessation
- 2002-03-25 CN CNA028102940A patent/CN1535367A/zh active Pending
- 2002-03-25 EP EP02719999A patent/EP1373799B1/de not_active Expired - Lifetime
- 2002-03-25 JP JP2002575535A patent/JP2004522128A/ja active Pending
- 2002-03-25 US US10/473,024 patent/US6997701B2/en not_active Expired - Fee Related
- 2002-03-25 WO PCT/EP2002/003342 patent/WO2002077525A1/de active IP Right Grant
- 2002-03-25 DE DE50212635T patent/DE50212635D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO02077525A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116734246A (zh) * | 2020-10-09 | 2023-09-12 | 黄强初 | 一种全预混燃烧装置 |
Also Published As
Publication number | Publication date |
---|---|
US20040091831A1 (en) | 2004-05-13 |
DE50212635D1 (de) | 2008-09-25 |
CN1535367A (zh) | 2004-10-06 |
WO2002077525A1 (de) | 2002-10-03 |
EP1373799B1 (de) | 2008-08-13 |
US6997701B2 (en) | 2006-02-14 |
ATE404819T1 (de) | 2008-08-15 |
DE10114903A1 (de) | 2002-10-17 |
JP2004522128A (ja) | 2004-07-22 |
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