EP1813864A2 - Brûleur à grande puissance - Google Patents

Brûleur à grande puissance Download PDF

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Publication number
EP1813864A2
EP1813864A2 EP06023922A EP06023922A EP1813864A2 EP 1813864 A2 EP1813864 A2 EP 1813864A2 EP 06023922 A EP06023922 A EP 06023922A EP 06023922 A EP06023922 A EP 06023922A EP 1813864 A2 EP1813864 A2 EP 1813864A2
Authority
EP
European Patent Office
Prior art keywords
burner
plate
diffusion
fuel
wall
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.)
Withdrawn
Application number
EP06023922A
Other languages
German (de)
English (en)
Other versions
EP1813864A3 (fr
Inventor
Guiseppe Fogliani
Massimo Gilioli
Massimo Dotti
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.)
Beckett Thermal Solutions SRL
Original Assignee
Worgas Bruciatori SRL
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
Application filed by Worgas Bruciatori SRL filed Critical Worgas Bruciatori SRL
Publication of EP1813864A2 publication Critical patent/EP1813864A2/fr
Publication of EP1813864A3 publication Critical patent/EP1813864A3/fr
Withdrawn legal-status Critical Current

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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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • 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
    • 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
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1017—Flame diffusing means characterised by surface shape curved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/102—Flame diffusing means using perforated plates
    • 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
    • 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
    • F23D2211/00—Thermal dilatation prevention or compensation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00012—Liquid or gas fuel burners with flames spread over a flat surface, either premix or non-premix type, e.g. "Flächenbrenner"

Definitions

  • the present invention relates to a burner device for generating heat by means of the combustion of a fuel and oxidant mixture.
  • Burner devices are known to be provided with a diffuser, such as for a fuel-air premixed gas to be blown therethrough, which supplies a pattern of a plurality of flames for generating heat.
  • the heat is then transferred by means of the hot combustion gases to a heat exchanger for heating a fluid, such as water, which is then piped to a utility, such as a heating system for an industrial process, for dwelling environments, and the like.
  • a utility such as a heating system for an industrial process, for dwelling environments, and the like.
  • combustion power can be changed by changing the fuel supply to the diffuser.
  • This fuel supply, and accordingly the combustion power can be only increased, however, to a limited extent, as flame stability problems occur at higher values, which affect the burner operation.
  • the diffuser size thus requires to be also increased. This inevitably results in an undesired increase in the burner overall dimensions, which is often incompatible with the narrow space available for burner installation.
  • the object of the present invention is thus to provide a burner device having such characteristics as to increase the ratio of the burner combustion power to the overall dimensions thereof.
  • a burner that can be supplied by a fuel-air mixture, comprising:
  • fuel By arranging a plate-like body with two opposite diffusion surfaces facing the outside of the plate-like body, two large-area flame fields can be obtained at an individual diffuser body of small thickness and bulk. This allows considerably increasing the total combustion area within a given volume, as this volume can be filled as desired by means of one or more plate-like bodies.
  • fuel is meant herein both a fuel-oxidant mixture, such as methane and air, and a fuel not premixed with an oxidant, such as methane or natural gas.
  • a burner for generating heat by means of the combustion of generally a combustible gas or particularly a gas/air premix is generally designated with numeral 1.
  • the burner 1 comprises a support structure 2 supporting a diffuser 3, and preferably though not necessarily, a distributor, particularly a distribution wall 4.
  • the diffuser 3 defines a plurality of openings 5 for the fuel to pass therethrough and be combusted, which define the area in which the combustion takes place.
  • the distributor 4 is usually arranged in a fuel conduction pathway 7 extending within the burner 1 from an external fuel source (not shown in the figures) to the diffuser 3.
  • the diffuser 3 comprises a plate-like body 8 with two opposite diffusion surfaces 9, 10 facing the outside of the plate-like body 8, such as to allow a combustion to take place on two opposite sides of the same plate-like body 8.
  • the distance 11 between the two diffusion surfaces 9, 10 defines a thickness of the plate-like body 8 and the surface extension of each of the diffusion surfaces is greater than said thickness.
  • Such "flattened” or “slender” shape of the plate-like body allows arranging a large combustion area (which is further doubled as combustion takes place on both opposite sides of the plate-like body) within a given volume.
  • the plate-like body 8 has a substantially box-like hollow shape, with at least two opposite diffusion walls 12, 13, which form said diffusion surfaces 9, 10 on the outside thereof, and define a space 14 within the plate-like body 8 for fuel conduction.
  • the plate-like body 8 defines, at a base side 15, one or more openings 16 for the fuel to flow in the conduction space 14, and advantageously, the conduction space is tapered away from said base side 15, i.e. said inlet opening 16 in the plate-like body 8.
  • the fuel conduction space 14 is tapered in a substantially linear manner in order to compensate substantially even flow rate "drops" along the conduction pathway, and consequently, in order to allow providing a pattern of diffusion opening 5 that is substantially even, i.e. with a ratio of the passage area to the diffusion surface being substantially even, regardless of the distance from the inlet opening 16. This contributes to an even distribution of the combustion areas within the total combustion volume, and thus to an optimum use of the total space available.
  • the conduction space 14 extending from the fuel inlet opening 16 to the diffusion walls 12, 13, is advantageously not provided with further walls for distributing the fuel on the diffusion walls.
  • a distribution wall 28 is arranged substantially parallel to the diffusion walls 12, 13.
  • a drilled distribution wall 4 is advantageously placed at the base side 15 of the plate-like body 8, such that the openings 6 of the distribution wall 4 provide the inlet opening 16 for the fuel. Due to the generally thin or flattened shape of the plate-like body, the fuel main flow is parallel to the diffusion walls 12, 13. For an effective distribution of the fuel all over the width of the plate-like body 8, the distribution wall 4 is thus advantageously oriented crosswise to the opposite diffusion walls 12, 13, such as shown in Fig. 11 and 17.
  • the plate-like body 8 develops across its width along a substantially annular or polygonal line, such as to form the wall of a globally tubular structure, such as a cylinder, a truncated cone, a cone, a polyhedron, a prism, or a parallelepiped, which results in that the opposite diffusion surfaces 9, 10 allow the combustion outside 17 and inside 18 the tubular structure.
  • a substantially annular or polygonal line such as to form the wall of a globally tubular structure, such as a cylinder, a truncated cone, a cone, a polyhedron, a prism, or a parallelepiped, which results in that the opposite diffusion surfaces 9, 10 allow the combustion outside 17 and inside 18 the tubular structure.
  • the plate-like body 8 develops across its width along a curved line, such as coiled, spiralled, or zigzag-shaped line, such as to form the wall of a three-dimensional open-profile structure, such as in the form of a labyrinth.
  • a curved line such as coiled, spiralled, or zigzag-shaped line, such as to form the wall of a three-dimensional open-profile structure, such as in the form of a labyrinth.
  • the plate-like body 8 branches off across its width according to a reticular or grid-like pattern, such as to form the wall of an alveolar structure and said opposite diffusion surfaces 9, 10 allow combustion to occur within the individual cells and outside this alveolar structure.
  • the plate-like body 8 comprises a plurality of diffuser elements 19 and the diffusion walls 12, 13 are formed in or by these diffuser elements 19.
  • the diffuser elements 19 are separated from each other by one or more expansion joints 20, which allow deformations and mutual displacements of the diffuser elements 19 to a certain extent, or alternatively, these diffuser elements 19 are provided with such a shape as to result being locally deformable or collapsible (in a controlled manner and to a certain extent which does not impair their diffusion function) following expansions of their opposite diffusion walls 12, 13 in the case where the global expansions of either the individual diffuser elements 19 or the whole plate-like body 8 are prevented, for example by the support structure 2.
  • the diffuser elements are generally formed as a thinned-wall open profile. This allows the diffusion walls to escape the thermal expansion stress by means of bend or local buckling.
  • the diffuser elements 19 are advantageously provided with a substantially box-like shape with two opposite main walls being the opposite diffusion walls 12, 13, along with side walls 21 that are intended to form joining regions with corresponding side walls 21 of adjacent diffuser elements 19.
  • the diffuser element 19 preferably has a tubular or box-like shaped body, with at least one continuous slot 22, such as to obtain the thinned wall open profile as mentioned above.
  • the slot 22 is formed in one of the opposite diffusion walls 12, 13 of the diffuser element 19.
  • the diffuser element 19 has an elongated shape and the slot 22 at least approximatively extends in the longitudinal direction of the diffuser element 19. This allows a well-controllable local deformation of the diffuser element 19, which allows the same to escape the thermal stress due to being crosswise fitted relative to the longitudinal extension of the diffuser element 19.
  • the diffuser element 19 is advantageously formed as one piece from a sheet-metal or plate-like semifinished product that has been previously drilled at the diffusion walls 12, 13.
  • the individual diffuser elements 19 making up this plate-like body also comprise a box-like body having a base side 23 with a fuel inlet opening and that internally defines a fuel conduction space, which is tapered away from the base side 23.
  • the individual diffuser elements 19 making up the same have a substantially triangular or trapezoid shape in the longitudinal section thereof, such as to provide a linear tapering of the fuel conduction space 14.
  • the base side 15 of the plate-like body 8 is supported by the support structure 2 of the burner 1, which comprises one or more openings for supplying the fuel to the plate-like body 8.
  • the plate-like body 8 is connected to the support structure 2 by means of an interference coupling, preferably by means of a snap fitting connection (Fig. 11, 17) .
  • the support structure 2 forms a seat 24 (in the specific case, an annular seat) for an interference connection with the base side 15 of the plate-like body 8 (in the specific case, the plate-like body 8 forms the circumferential wall of an internally cylindrical and externally truncated cone-shaped tubular structure) and the seat 24 is, in turn, formed by the distribution wall 4 of the burner 1.
  • a further diffuser 25 is advantageously provided to be arranged in the support structure 2 within a space being defined by the plate-like body 8 (for example, within the cylindrical or truncated-cone shaped structure as shown in Fig. 1 and 9) and oriented crosswise relative to the latter.
  • the further diffuser 25 is also connected to the support structure 2 by means of an interference coupling, preferably by means of a snap fitting connection (Fig. 11, 17).
  • the plate-like body 8 consists of a plurality of diffuser elements 19 in the form of elongated beams
  • the latter are advantageously arranged adjacent to each other and supported by means of an individual end (base side 23) in the support structure 2 of the burner. Due to the division of the plate-like body 8 into a plurality of diffuser elements 19 it is further possible to provide the plate-like body 8 with complex shapes, such as curved or branched, which can be hardly obtained by means of a single-piece plate-like body.
  • the opposite diffusion walls 12, 13 forming the opposite diffusion surfaces 9, 10 of the plate-like body 8 are, in turn, formed with a double wall and each diffusion wall with double wall comprises a first diffusion wall 26 for a stable flame combustion of the fuel within a first flow rate range and a second diffusion wall 27 for a stable flame combustion of the fuel within a second flow rate range other than the first flow rate range, wherein the first diffusion wall 26 and the second diffusion wall 27 are preferably parallel and sequentially arranged in the fuel conduction pathway through the diffusion wall with double walls.
  • the opposite diffusion walls 12, 13, and preferably the whole plate-like body 8 or the whole diffuser elements 19 are made of drilled sheet-metal made of high-thermal resistance metal material, or alternatively, of porous or drilled ceramic material, or metal or ceramic fibers, such as permeable metal mesh.
  • drilled sheet-metal made of high-thermal resistance metal material, or alternatively, of porous or drilled ceramic material, or metal or ceramic fibers, such as permeable metal mesh.
  • the plate-like body has a shape tapering away from the base side
  • a plate-like body can be obviously arranged in which the distance between the two opposite diffusion walls is substantially even, such as shown by way of example in Fig. 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Incineration Of Waste (AREA)
EP06023922A 2006-01-27 2006-11-17 Brûleur à grande puissance Withdrawn EP1813864A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20060147 ITMI20060147A1 (it) 2006-01-27 2006-01-27 Dispositivo bruciatore a potenza elevata

Publications (2)

Publication Number Publication Date
EP1813864A2 true EP1813864A2 (fr) 2007-08-01
EP1813864A3 EP1813864A3 (fr) 2013-03-06

Family

ID=38051729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06023922A Withdrawn EP1813864A3 (fr) 2006-01-27 2006-11-17 Brûleur à grande puissance

Country Status (2)

Country Link
EP (1) EP1813864A3 (fr)
IT (1) ITMI20060147A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037175A2 (fr) * 2007-09-12 2009-03-18 Polidoro S.p.A. Brûleur à prémélange
WO2009065733A1 (fr) 2007-11-19 2009-05-28 Sit La Precisa S.P.A. Con Socio Unico Brûleur, en particulier brûleur à prémélange
CN102597624A (zh) * 2009-12-11 2012-07-18 贝卡尔特燃烧技术股份有限公司 具有低孔隙率的燃烧器层面的燃烧器
JP2015105788A (ja) * 2013-11-29 2015-06-08 株式会社デンソー 燃焼装置
GB2523244A (en) * 2014-01-03 2015-08-19 Delavan Inc Compensating for thermal expansion via controlled tube buckling
GB2523733A (en) * 2014-02-12 2015-09-09 Worgas Burners Ltd Gas burner
CN107662714A (zh) * 2017-08-16 2018-02-06 北京航天长征飞行器研究所 一种高温燃气柔性扩散装置
WO2019165385A1 (fr) * 2018-02-23 2019-08-29 Fulton Group N.A., Inc. Brûleur à combustion de combustible à prémélange à allumage vers l'intérieur
CN115355503A (zh) * 2022-08-29 2022-11-18 哈尔滨工业大学 一种全预混表面燃烧器头部气体分配结构
WO2023028129A1 (fr) * 2021-08-25 2023-03-02 Fulton Group N.A., Inc. Système de combustion de combustible à pré-mélange à plaque plate compacte, et système de chauffage de fluide et système de brûleur intégré le comprenant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869315A2 (fr) * 1997-04-01 1998-10-07 Robert Bosch Gmbh Brûleur atmosphérique à gaz
EP0899507A1 (fr) * 1997-08-29 1999-03-03 Tokyo Gas Company Limited Structure d'un boítier pour un bouleur de rayonnement d'éviter une fuite
WO2004092647A1 (fr) * 2003-04-18 2004-10-28 N.V. Bekaert S.A. Membrane metallique pour bruleur
WO2004111536A1 (fr) * 2003-06-19 2004-12-23 Worgas Bruciatori S.R.L. Bruleur avec diffuseur resistant aux temperatures de fonctionnement elevees

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869315A2 (fr) * 1997-04-01 1998-10-07 Robert Bosch Gmbh Brûleur atmosphérique à gaz
EP0899507A1 (fr) * 1997-08-29 1999-03-03 Tokyo Gas Company Limited Structure d'un boítier pour un bouleur de rayonnement d'éviter une fuite
WO2004092647A1 (fr) * 2003-04-18 2004-10-28 N.V. Bekaert S.A. Membrane metallique pour bruleur
WO2004111536A1 (fr) * 2003-06-19 2004-12-23 Worgas Bruciatori S.R.L. Bruleur avec diffuseur resistant aux temperatures de fonctionnement elevees

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037175A2 (fr) * 2007-09-12 2009-03-18 Polidoro S.p.A. Brûleur à prémélange
EP2037175B1 (fr) 2007-09-12 2016-11-23 Polidoro S.p.A. Brûleur à prémélange
EP2037175A3 (fr) * 2007-09-12 2012-11-21 Polidoro S.p.A. Brûleur à prémélange
WO2009065733A1 (fr) 2007-11-19 2009-05-28 Sit La Precisa S.P.A. Con Socio Unico Brûleur, en particulier brûleur à prémélange
CN102597624B (zh) * 2009-12-11 2015-04-15 贝卡尔特燃烧技术股份有限公司 具有低孔隙率的燃烧器层面的燃烧器
CN102597624A (zh) * 2009-12-11 2012-07-18 贝卡尔特燃烧技术股份有限公司 具有低孔隙率的燃烧器层面的燃烧器
JP2015105788A (ja) * 2013-11-29 2015-06-08 株式会社デンソー 燃焼装置
GB2523244A (en) * 2014-01-03 2015-08-19 Delavan Inc Compensating for thermal expansion via controlled tube buckling
GB2523244B (en) * 2014-01-03 2017-01-11 Delavan Inc Compensating for thermal expansion via controlled tube buckling
US9625155B2 (en) 2014-01-03 2017-04-18 Delavan Inc. Compensating for thermal expansion via controlled tube buckling
US10001280B2 (en) 2014-01-03 2018-06-19 Delavan Inc. Compensating for thermal expansion via controlled tube buckling
GB2523733A (en) * 2014-02-12 2015-09-09 Worgas Burners Ltd Gas burner
CN107662714A (zh) * 2017-08-16 2018-02-06 北京航天长征飞行器研究所 一种高温燃气柔性扩散装置
WO2019165385A1 (fr) * 2018-02-23 2019-08-29 Fulton Group N.A., Inc. Brûleur à combustion de combustible à prémélange à allumage vers l'intérieur
US10989406B2 (en) 2018-02-23 2021-04-27 Fulton Group N.A., Inc. Compact inward-firing premix fuel combustion system, and fluid heating system and packaged burner system including the same
WO2023028129A1 (fr) * 2021-08-25 2023-03-02 Fulton Group N.A., Inc. Système de combustion de combustible à pré-mélange à plaque plate compacte, et système de chauffage de fluide et système de brûleur intégré le comprenant
CN115355503A (zh) * 2022-08-29 2022-11-18 哈尔滨工业大学 一种全预混表面燃烧器头部气体分配结构

Also Published As

Publication number Publication date
EP1813864A3 (fr) 2013-03-06
ITMI20060147A1 (it) 2007-07-28

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