EP2310743B1 - Brûleur radiant - Google Patents

Brûleur radiant Download PDF

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Publication number
EP2310743B1
EP2310743B1 EP09793931.8A EP09793931A EP2310743B1 EP 2310743 B1 EP2310743 B1 EP 2310743B1 EP 09793931 A EP09793931 A EP 09793931A EP 2310743 B1 EP2310743 B1 EP 2310743B1
Authority
EP
European Patent Office
Prior art keywords
radiant
burner
screen
radiant burner
plate
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.)
Active
Application number
EP09793931.8A
Other languages
German (de)
English (en)
Other versions
EP2310743A1 (fr
Inventor
Koen Claerbout
Geert Dumortier
Valérie OLALDE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solaronics SAS
Original Assignee
Solaronics SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Solaronics SAS filed Critical Solaronics SAS
Priority to EP09793931.8A priority Critical patent/EP2310743B1/fr
Publication of EP2310743A1 publication Critical patent/EP2310743A1/fr
Application granted granted Critical
Publication of EP2310743B1 publication Critical patent/EP2310743B1/fr
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Classifications

    • 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
    • F23D14/148—Radiant burners using screens or perforated plates with grids, e.g. strips or rods, as radiation intensifying means
    • 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
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/149—Radiant burners using screens or perforated plates with wires, threads or gauzes as radiation intensifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/103—Flame diffusing means using screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/106—Assemblies of different layers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/20—Burner material specifications metallic

Definitions

  • the present invention relates to radiant burners comprising a radiant burner plate and a screen.
  • Radiant burners comprising a radiant burner plate and a screen are known e.g. from US4799879 or EP0539278 .
  • the screen together with the radiant burner plate provides the radiative output of the burner, which averages at levels around 50% efficiency.
  • the radiative output of the burners has been increased by modification of the radiant burner plate from a radiant burner plate with rows of through holes or perforations serving to channel the mixture of air and combustion agent from the rear of the plate to the radiating face, to a radiant burner plate wherein the through holes or perforations are arranged in what is nowadays called honeycomb pattern as described in e.g. US4,569,657 or US4,799,879 .
  • a burner member comprises a block of refractory material defining a multiplicity of small bore passages extending in generally parallel relation to one another from a first boundary surface of said block toward a second boundary surface thereof, said passages adapted to conduct a combustible gas mixture from said first boundary surface toward said second boundary surface for combustion adjacent to said second boundary surface, at least some of said passages opening into said second boundary surface, said second boundary surface defining therein a plurality of indentations each having a peripheral wall substantially longer than the bore diameter of any one of said passages, means for at least some of said passages for conducting at least some of said combustible gas mixture away from said passages at an angle to the axes of said passages and through said peripheral wall into an adjacent indentation, and a radiation and gas pervious metallic matting overlying at least a portion of said second boundary surface and extending outwardly from said second boundary surface beyond the region of burning of said gas mixture to thereby cause a layer of exhaust gases to stagn
  • An aspect of the claimed invention provides a radiant burner which comprises a body defining a premixing chamber and a combustion chamber.
  • the premixing chamber is separated from the combustion chamber by at least one radiant burner plate which has multiple levels of burner surface.
  • the combustion chamber is further limited by a first radiant screen.
  • the radiant burner further comprises a second radiant screen in the combustion chamber.
  • the second radiant screen is spaced from, but near and parallel to the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plates by back radiation when in use.
  • the second radiant screen is an arrangement of parallel spaced round rods or square bars.
  • first and second radiant screens are produced from highly heat resistant materials such as ceramics, especially aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide.
  • the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi 2 ) or tungsten disilicide (WSi 2 ).
  • the radiant screens are fabricated from highly heat resistant steel grades, such as high level stainless steel grades like Kanthal APM or APMT, different grades of FeCrAI alloy designed for high temperature corrosion, Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
  • high level stainless steel grades like Kanthal APM or APMT
  • different grades of FeCrAI alloy designed for high temperature corrosion Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
  • the radiant burner plate is preferably made of a ceramic material with high temperature resistance, and excellent mechanical and thermodynamic properties such as e.g. cordierite or zirconia; partially stabilised zirconia (PSZ), alumina, silicon carbides or other high level technical ceramics. Height difference in between two levels of burner surface of the radiant burner plate is from 1 to 20 mm. More preferably, from 1 to 10 mm. Even more preferably, from 2 to 7 mm. Most preferably 5 mm.
  • the radiant burner plate has multiple levels of burner surfaces. These multiple levels are arranged in rows and are alternating per one row of through holes/perforations on the radiant burner plate.
  • An example of such burner plate can be found in Figure 1 , or alternatives in Figures 2 and 3 .
  • These types of burner plates, as such, provide less emissivity compared to ceramic tiles with honeycomb or similar perforation patterns. This is due to the multiple level burner surface, wherein the lower levels of the burner surface of the radiant burner plates provide a higher radiative output because the sides of the rows also heat up and provide an additional radiative output, but the highest level of burner surface does not have such additional radiative output. So the overall radiative output, and therefore also the energy efficiency, of such multilevel radiant burner plate as such, is lower than honeycomb-like perforations in the radiant burner plate.
  • the overall effect of the present invention is that the different levels in the burner surface of the radiant burner plates are at the same temperature when in use. Stated otherwise, a greater temperature uniformity of the burner surface of the radiant burner plate is attained.
  • the distance between the second radiant screen and the highest level of burner surface of the at least one radiant burner plates is between 3 and 50 mm.
  • the distance between the second radiant screen and highest level of the radiant burner plate is between 5 and 30 mm, even more preferably between 10 and 25 mm, most preferably between 15 and 20 mm.
  • the second radiant screen is positioned such that the second radiant screen follows the direction of the rows of the highest level of burner surface of the radiant burner plate.
  • the first radiant screen is preferably a metal grid.
  • the first radiant screen is an arrangement of parallel spaced round rods or square bars. More preferably, the first and second radiant screens are made of an arrangement of parallel spaced round rods or square bars.
  • the first and second radiant screens are arranged in the same direction.
  • the first and second radiant screens are arranged in shifted angles with respect to one another. More preferably, the first and second radiant screens are at a 90° angle.
  • a further observed advantage of the present invention is a lower level of emissions of byproducts of combustion, such as Nitrogen Oxides or Carbon Monoxide, which is probably due to the second radiant screen which acts as an extended burner surface and provides a more complete combustion of the gas-air mixture.
  • Another aspect of the claimed invention provides a radiant burner with at least one further radiant screen in the combustion chamber.
  • Figures 1 to 3 show cross sections of example embodiments of radiant burner plates which might be used in the present invention.
  • Figure 1 shows two levels of burner surface of the radiant burner plate 2
  • figures 2 and 3 show three levels of burner surface, in two alternative forms.
  • the first radiant screen 4 is a highly heat resisting metal grid fabricated from highly heat resistant steel grades, such as high level stainless steel grades like Kanthal APM or APMT, different grades of FeCrAI alloy designed for high temperature corrosion, Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
  • highly heat resistant steel grades such as high level stainless steel grades like Kanthal APM or APMT, different grades of FeCrAI alloy designed for high temperature corrosion, Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
  • the second radiant screen 3 is made of a highly heat resisting ceramic material, in this example aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide with a silicon infiltration grade of 5 to 50 % or even more.
  • the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi 2 ) or tungsten disilicide (WSi 2 ).
  • the radiant burner plate 2 is made of a two level burner surface, ceramic tile made of cordierite or alternate thermodynamically suited ceramics as mentioned above.
  • the first and second radiant screens are made of highly heat resisting material, in this example a ceramic like aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide with a silicon infiltration grade of 5 to 50 % or even more.
  • the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi 2 ) or tungsten disilicide (WSi 2 ).
  • this first and second radiant screens are arranged in directions which are 90° with respect to one another.
  • the radiant burner plate 2 is made of a two level burner surface, ceramic tile made of cordierite.
  • the radiant burner of the present invention are particularly suitable for drying web materials at high web speeds.
  • One preferred area of application is the drying of moving paper webs.
  • the new improved radiant burner comprises a body defining a premixing chamber and a combustion chamber.
  • the premixing chamber is separated from the combustion chamber by at least one radiant burner plate which has multiple levels of burner surface.
  • the combustion chamber is further limited by a first radiant screen.
  • the radiant burner further comprises a second radiant screen in the combustion chamber. The second radiant screen is spaced from, but near the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Claims (5)

  1. Brûleur radiant (1) comprenant un corps définissant une chambre de pré-mélange et une chambre de combustion, ladite chambre de pré-mélange étant séparée de la chambre de combustion par au moins une plaque de brûleur radial (2) qui a plusieurs niveaux de surface de brûleur, ladite chambre de combustion étant en outre limitée par un premier écran radiant (4),
    caractérisé en ce que la pluralité de niveaux sont agencés en rangées et alternent par rangée de trous débouchants sur la plaque de brûleur radiant (2) et ladite au moins une plaque de brûleur radiant (2) a une différence de hauteur entre 2 niveaux de surface de brûleur de 1 à 20 mm ; ledit brûleur radiant (1) comprend en outre un second écran radiant (3) dans ladite chambre de combustion, ledit second écran radiant (3) étant espacé de, mais à proximité et parallèle à ladite au moins une plaque de brûleur radiant (2) et la distance entre ledit second écran radiant (3) et le niveau le plus haut de surface de brûleur de la au moins une plaque de brûleur radiant (2) étant comprise entre 3 et 50 mm, de sorte que ledit second écran radiant (3) sert de surface de brûleur étendue et chauffe également ladite au moins une plaque de brûleur radiant (2) lors de l'utilisation.
  2. Brûleur radiant (1) selon la revendication 1, dans lequel ledit second écran radiant (3) est un agencement de tiges rondes ou de barres carrées espacées parallèles.
  3. Brûleur radiant (1) selon les revendications 1 ou 2, dans lequel ledit premier écran radiant (4) est une grille métallique ou un agencement de tiges rondes ou de barres carrées espacées parallèles.
  4. Brûleur radiant (1) selon l'une quelconque des revendications 1 à 3, dans lequel ladite au moins une plaque de brûleur radiant (2) est une plaque de brûleur en céramique.
  5. Brûleur radiant (1) selon la revendication 1, dans lequel ladite chambre de combustion comprend en outre au moins un autre écran radiant.
EP09793931.8A 2008-07-08 2009-07-03 Brûleur radiant Active EP2310743B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09793931.8A EP2310743B1 (fr) 2008-07-08 2009-07-03 Brûleur radiant

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08159919 2008-07-08
EP09793931.8A EP2310743B1 (fr) 2008-07-08 2009-07-03 Brûleur radiant
PCT/EP2009/058429 WO2010003904A1 (fr) 2008-07-08 2009-07-03 Brûleur radiant amélioré

Publications (2)

Publication Number Publication Date
EP2310743A1 EP2310743A1 (fr) 2011-04-20
EP2310743B1 true EP2310743B1 (fr) 2020-01-15

Family

ID=40119399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09793931.8A Active EP2310743B1 (fr) 2008-07-08 2009-07-03 Brûleur radiant

Country Status (7)

Country Link
US (1) US20110111356A1 (fr)
EP (1) EP2310743B1 (fr)
JP (1) JP5529126B2 (fr)
CN (1) CN102089586B (fr)
BR (1) BRPI0915469B1 (fr)
CA (1) CA2726927A1 (fr)
WO (1) WO2010003904A1 (fr)

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CN104884868B (zh) 2013-02-14 2018-02-06 克利尔赛恩燃烧公司 用于具有穿孔火焰稳定器的燃烧器的启动方法和机构
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CN105917168B (zh) * 2014-01-23 2019-04-02 索拉劳尼克斯股份有限公司 燃气辐射发射器
CN104373937B (zh) * 2014-11-13 2017-04-12 艾欧史密斯(中国)热水器有限公司 燃气预混燃烧器及燃气热水器
EP3403026B1 (fr) 2016-01-13 2021-12-15 ClearSign Technologies Corporation Système de combustion comprenant un premier et un second stabilisateurs de flammes perforés, séparés par un espace
EP3449183B1 (fr) 2016-04-29 2023-12-06 ClearSign Technologies Corporation Système de brûleur avec stabilisateurs de flamme transversaux distincts
WO2018085152A1 (fr) 2016-11-04 2018-05-11 Clearsign Combustion Corporation Pilote de plasma
WO2018160856A1 (fr) 2017-03-02 2018-09-07 Clearsign Combustion Corporation Système de combustion à stabilisateur de flamme perforé et à flamme de préchauffage stabilisée par tourbillonnement
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EP3598000B1 (fr) 2018-07-20 2021-04-28 Solaronics Émetteur radiant à gaz comprenant un écran radiant
FR3103260B1 (fr) 2019-11-15 2021-11-26 Solaronics Sa Emetteur de rayonnement infra-rouge
FR3117191B1 (fr) 2020-12-03 2023-02-10 Solaronics Emetteur de rayonnement infra-rouge

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Publication number Priority date Publication date Assignee Title
US3258058A (en) 1960-09-27 1966-06-28 Antargaz Radiant gas burners
GB1080355A (en) 1963-08-14 1967-08-23 Osaka Gas Co Ltd Improvements in or relating to infrared ray emitting apparatus
US3291188A (en) * 1964-03-23 1966-12-13 Partiot Maurice Deep combustion radiant elements
GB1117428A (en) 1965-10-08 1968-06-19 Ultraesteatita S A Ceramic plate for gas burners
US3847536A (en) 1972-05-08 1974-11-12 Antargaz Radiant burner operating at high temperature
DE8002490U1 (de) 1980-01-31 1982-03-18 Rinnai K.K., Nagoya, Aichi Infrarotstrahlungs-gasbrennerplatte
WO1992017737A1 (fr) 1991-03-28 1992-10-15 Kurt Krieger Plaque de bruleur radiant
EP0794384A2 (fr) 1996-02-08 1997-09-10 DVGW Deutscher Verein des Gas- und Wasserfaches -Technisch-wissenschaftliche Vereinigung- Petit appareil de combustion pour l'usage domestique
DE29924045U1 (de) 1999-12-04 2001-10-11 Krieger Gmbh & Co Kg Gasbeheizter Infrarot-Strahler für eine Infrarot-Trocknungseinheit
WO2003069244A1 (fr) 2002-02-11 2003-08-21 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique equipe d'indicateurs de plages de temperatures
US20060021517A1 (en) 2004-06-23 2006-02-02 Best Willie H Infrared emitting apparatus

Also Published As

Publication number Publication date
BRPI0915469A2 (pt) 2015-11-10
CA2726927A1 (fr) 2010-01-14
CN102089586A (zh) 2011-06-08
CN102089586B (zh) 2013-02-06
BRPI0915469B1 (pt) 2020-04-22
JP5529126B2 (ja) 2014-06-25
WO2010003904A1 (fr) 2010-01-14
EP2310743A1 (fr) 2011-04-20
US20110111356A1 (en) 2011-05-12
JP2011527413A (ja) 2011-10-27

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