EP2037175B2 - Vormischbrenner - Google Patents

Vormischbrenner Download PDF

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Publication number
EP2037175B2
EP2037175B2 EP08015450.3A EP08015450A EP2037175B2 EP 2037175 B2 EP2037175 B2 EP 2037175B2 EP 08015450 A EP08015450 A EP 08015450A EP 2037175 B2 EP2037175 B2 EP 2037175B2
Authority
EP
European Patent Office
Prior art keywords
holes
tubular body
disk
premixed burner
openings
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
EP08015450.3A
Other languages
English (en)
French (fr)
Other versions
EP2037175B1 (de
EP2037175A2 (de
EP2037175A3 (de
Inventor
Domenico Peserico
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.)
Polidoro SpA
Original Assignee
Polidoro SpA
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 Polidoro SpA filed Critical Polidoro SpA
Priority to PL08015450.3T priority Critical patent/PL2037175T5/pl
Publication of EP2037175A2 publication Critical patent/EP2037175A2/de
Publication of EP2037175A3 publication Critical patent/EP2037175A3/de
Publication of EP2037175B1 publication Critical patent/EP2037175B1/de
Application granted granted Critical
Publication of EP2037175B2 publication Critical patent/EP2037175B2/de
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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
    • F23D14/46—Details
    • 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
    • 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
    • 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
    • F23D2203/102—Flame diffusing means using perforated plates
    • F23D2203/1023—Flame diffusing means using perforated plates with specific free passage areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications
    • 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

Definitions

  • the present invention relates to a premixed burner.
  • the present invention relates to a premixed burner, typically of cylindrical shape and especially suitable for combustion boilers.
  • premixed burners comprise a header along which a fan conveys the air-gas mixture.
  • Said burners are traditionally provided with an inner liner or distributor, provided with suitable through openings and that lead the mixture to the burner surface; the latter is also provided with multiple holes or slits having much smaller size than that of the header to prevent backfires. While this known solution is functional, it shows some considerable drawbacks.
  • the inner liner or distributor causes considerable unevenness of temperature on the burner surface; this is due to the fact that the mixture that flows from the inner distributor holes directly impinges the outer body, cooling it in correspondingly localised zones and thereby creating thermal gradients with consequent cyclical endurance stress, caused by the same boiler cycle. Due to the high temperatures reached, even higher than 700°C, microfissures may occur on the burner surface that over time, cause real and extended breakage; in these cases, the burner must be replaced in full, as it cannot be repaired anymore, but there is also a concrete risk of explosion due to backfire.
  • the object of this invention is to provide a premixed burner which should not require setting up and coupling an inner distributor of the air-gas mixture to the burner itself.
  • a further object of the invention is to provide a premixed burner the surface whereof should show a substantial temperature evenness in operation, preventing or at least reducing in a substantial manner the risk of formation of microfissures and backfires.
  • a further object of the invention is to provide the users with a premixed burner suitable for ensuring high level of resistance and reliability over time, also such as to be easily and inexpensively constructed.
  • ⁇ EP 1 813 864 discloses a burner with a double-wall diffuser.
  • the diffuser comprises a plate-like body with two opposite diffusion surfaces facing the outside of the so formed plate-like body, such as to allow a combustion to take place on two
  • the premixed burner of the present invention globally indicated with 10 at figure 2 and by way of an example with cylindrical or optionally truncated-cone shape, comprises a tubular body 12, generally of steel, closed on a head by a welded or crimped plate 24.
  • the side surface of the tubular body 12 is provided with a plurality of small through openings or slits and holes of any shape, indicated with 14; by way of an example, said holes and slits are only represented on limited parts of body 12, it being understood that they may be made along the entire side surface of said body according to any configuration and/or size.
  • the head of the tubular body 12 opposite plate 24 is closed by at least one disk 16 provided with flange 18 with circumferential lowering 18' for coupling with the inlet indicated with 20; disk 16 is made in a single body with flange 18 and is provided with a plurality of holes 22, having by way of an example a circular shape and even diameter.
  • Said holes 22, which extend almost by the entire surface of disk 16, in any case may have any diameter or shape and optionally be made in groups with different diameters and/or shapes, also distributed randomly on said surface of disk 16.
  • Diameter, shape and distribution of holes 22 along disk 16 are, in the practice, defined upon the system calibration and vary according to the different types of burners, since such calibration is specifically intended for optimising the efficiency thereof.
  • disk 16 with holes 22 replaces the traditional inner distributor; flange 18 is coupled in a known manner to the conventional header that feeds the air-gas mixture and the latter, as a consequence, enters frontally rather than circumferentially, into body 12 constituting the burner.
  • disk 16 defines the distribution head of burner 10, thus making the inner distributor unnecessary.
  • Experimental tests carried out by the applicant have enabled checking that the burner according to this invention ensures the same levels of efficiency of the known solutions that envisage the use of the inner distributor, with the further advantage of preventing lack of homogeneity in the heat distribution on the tubular body 12.
  • a solution of this type is also suitable for burners of the combustion type on fabric, wherein the side surface is covered by a metal or ceramic fabric layer.
  • Disk 16 with flange 18 is constrained by welding or crimping to the tubular body 12 and preferably has a planar development; it is also to be provided for said disk to have non-planar configuration, for example concave or convex according to specific requirements.
  • the distribution head of burner 10 it is possible to provide for the distribution head of burner 10 to be composed of two disks 16, suitably spaced from one another, respectively provided with holes, slots or through openings of different shape and/or extension, or for disk 16 to be spaced from flange 18 for creating one or more circumferentially open zones for the passage of mixture.
  • disk 16 with holes 22 that closes one of the heads of the tubular body 12 integrally and effectively replaces the inner distributor used on the conventional burners, with clear advantages in terms of production and assembly cost saving.
  • the absence of the inner distributor moreover, prevents the localised overheating of zones of the tubular body 12 along which the flame develops, preventing the onset of breakage phenomena and above all, excluding the risk of dangerous backfires.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Claims (8)

  1. Vormischbrenner (10), insbesondere für Brennwertkessel, umfassend:
    einen rohrförmigen Körper (12), dessen Seitenfläche mit mehreren Löchern und Schlitzen (14) versehen ist, wobei der rohrförmige Körper (12) einen Kopf aufweist, der einen Einlass (20) bildet,
    und zumindest eine Scheibe (16), die an dem Kopf des rohrförmigen Körpers (12) befestigt ist und den Verteilerkopf zum Verteilen des Luft-Gasgemisches in den Körper (12) hinein bildet,
    wobei die mindestens eine Scheibe (16) mit Durchgangsöffnungen oder Löchern (22) versehen ist und der rohrförmige Körper (12) auf dem anderen Kopf durch eine Platte (24) geschlossen ist, wobei die Platte (24) entlang der Seitenfläche des rohrförmigen Körpers (12) geschweißt oder gefalzt ist,
    wobei die Scheibe (16) (16) mit Löchern (22), welche eines der Enden des rohrförmigen Körpers (12) schließt, mit einem Flansch (18) mit umlaufender Absenkung (18') zur Kopplung mit dem gegenüber dem durch die Platte (24) verschlossenen Kopf angeordneten Einlass (20) des rohrförmigen Körpers (12) versehen ist,
    dadurch gekennzeichnet, dass
    der Vormischbrenner (10) keinen inneren Verteiler zur Verteilung des Luft-Gas-Gemisches in den Brenner (10) hinein umfasst, wobei die Scheibe (16) mit Löchern (22) die Funktion des internen Luft-Gasgemisch-Verteilers zur Verteilung des Luft-Gas-Gemisches ausführt,
    und
    die mindestens eine Scheibe (16) einstückig mit dem Flansch (18) ausgebildet ist.
  2. Vormischbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Löcher (22) sich fast über die gesamte Oberfläche der Scheibe (16) erstrecken.
  3. Vormischbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Durchgangsöffnungen oder Löcher (22) durch einen geprägten Kragen (26) gebunden sind, der sich zum inneren Teil des rohrförmigen Körpers (12) hin erstreckt.
  4. Vormischbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Durchgangsöffnungen oder Löcher (22) durch teilweises Schneiden und Falten eines Abschnitts der Scheibe (16) erhalten sind, um geprägte Zungen auszubilden, die sich zum inneren Teil des rohrförmigen Körpers (12) hin entwickeln und sich mit den Öffnungen (22) abwechseln.
  5. Vormischbrenner nach Anspruch 4, dadurch gekennzeichnet, dass die Scheibe (16) mit dem Flansch (18) durch Schweißen und/oder Falzen an dem Kopf des rohrförmigen Körpers (12) gehalten ist.
  6. Vormischbrenner nach Anspruch 5, dadurch gekennzeichnet, dass die Scheibe (16) eine nicht-planare Entwicklung aufweist.
  7. Vormischbrenner nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Durchgangsöffnungen oder Löcher (22) heterogene Durchmesser oder Oberflächen aufweisen.
  8. Vormischbrenner nach Anspruch 7, dadurch gekennzeichnet, dass die Durchgangsöffnungen oder Löcher (22) auf zwei Scheiben (16) hergestellt sind, die voneinander beabstandet sind.
EP08015450.3A 2007-09-12 2008-09-02 Vormischbrenner Active EP2037175B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08015450.3T PL2037175T5 (pl) 2007-09-12 2008-09-02 Palnik z mieszaniem wstępnym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001751A ITMI20071751A1 (it) 2007-09-12 2007-09-12 Bruciatore premiscelato

Publications (4)

Publication Number Publication Date
EP2037175A2 EP2037175A2 (de) 2009-03-18
EP2037175A3 EP2037175A3 (de) 2012-11-21
EP2037175B1 EP2037175B1 (de) 2016-11-23
EP2037175B2 true EP2037175B2 (de) 2024-11-27

Family

ID=40111124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08015450.3A Active EP2037175B2 (de) 2007-09-12 2008-09-02 Vormischbrenner

Country Status (5)

Country Link
EP (1) EP2037175B2 (de)
ES (1) ES2616500T5 (de)
IT (1) ITMI20071751A1 (de)
PL (1) PL2037175T5 (de)
PT (1) PT2037175T (de)

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ITPD20070388A1 (it) * 2007-11-19 2009-05-20 Sit La Precisa S P A Con Socio Bruciatore, in particolare bruciatore a gas con pre-miscelazione
ITMO20080069A1 (it) * 2008-03-10 2009-09-11 Worgas Bruciatori Srl Bruciatore dotato di mezzi di riduzione del rumore
EP2510281B1 (de) 2009-12-11 2017-10-25 Bekaert Combustion Technology B.V. Brenner mit brennerdeck mit geringer porosität
DE202011005262U1 (de) 2010-05-28 2011-12-22 Jaroslav Klouda Brenner mit Zündhilfe
WO2012069534A1 (en) * 2010-11-26 2012-05-31 Bekaert Combustion Technology B.V. Burner with secondary axial flow elements
DE102011017023A1 (de) 2011-04-14 2011-12-01 Jaroslav Klouda Brenner mit Zündhilfe
DE202011107309U1 (de) 2011-11-02 2012-07-24 Jaroslav Klouda Brenner mit Zündhilfeeinrichtung
EP2805111B1 (de) 2012-01-19 2018-07-04 Bekaert Combustion Technology B.V. Zylinderförmiger gasvormischungsbrenner
EP2815179A1 (de) 2012-02-16 2014-12-24 Bekaert Combustion Technology B.V. Vorgemischgasbrenner
EP2815181A1 (de) 2012-02-16 2014-12-24 Bekaert Combustion Technology B.V. Vorgemischgasbrenner
FR2993040B1 (fr) * 2012-07-05 2016-07-15 Giannoni France Bruleur a gaz a combustion de surface
CN103742911B (zh) * 2014-01-07 2015-12-23 天津城建大学 完全预混燃气燃烧器
GB2529233B (en) * 2014-08-14 2017-09-27 Munster Simms Eng Ltd Burner device for heating apparatus
EP3006826B1 (de) * 2014-10-10 2017-05-03 WORGAS BRUCIATORI S.r.l. Brenner
EP3018408B1 (de) 2014-11-05 2017-06-07 WORGAS BRUCIATORI S.r.l. Brenner
US10767900B2 (en) * 2015-05-14 2020-09-08 Lochinvar, Llc Burner with flow distribution member
US10533740B2 (en) 2015-07-09 2020-01-14 Carrier Corporation Inward fired ultra low NOX insulating burner flange
TR201517546A2 (tr) * 2015-12-30 2017-07-21 Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi Hava ve/veya yakıt için bir açıklığa sahip olan brülör ve bu tip bir brülöre sahip olan bir ısıtma cihazı.
WO2017194394A1 (en) 2016-05-13 2017-11-16 Bekaert Combustion Technology B.V. Gas premix burner with a cylindrical burner deck
EP3455555A1 (de) 2016-05-13 2019-03-20 Bekaert Combustion Technology B.V. Zylinderförmiger gasvormischungsbrenner
JP6988209B2 (ja) * 2017-07-11 2022-01-05 株式会社Ihi 流体分散器及び流体分散装置
EP3752770A1 (de) 2018-02-14 2020-12-23 Bekaert Combustion Technology B.V. Zylindrischer vormischungsgasbrenner
EP3628924B1 (de) 2018-09-25 2021-06-02 Polidoro S.p.A. Variabler querschnitt verteilereinrichtung für einen vormischbrenner und brenner mit einer solchen verteilereinrichtung
EP3628923B1 (de) 2018-09-25 2021-06-16 Polidoro S.p.A. Verteilvorrichtung für einen vormischbrenner und brenner mit dieser verteilvorrichtung
DE102019129639A1 (de) * 2019-11-04 2021-05-06 Rational Aktiengesellschaft Gasbrennerbaugruppe für ein Gargerät sowie Gargerät
NL2024623B1 (en) 2020-01-08 2021-09-07 Bekaert Combustion Tech Bv Gas burner and heating appliance
CN114945777A (zh) * 2020-01-08 2022-08-26 贝卡尔特燃烧技术股份有限公司 气体燃烧器和加热器具
NL2028637B1 (en) 2021-07-06 2023-01-12 Bekaert Combustion Tech Bv Premix gas burner system and method
WO2026009171A1 (en) 2024-07-04 2026-01-08 Polidoro S.P.A. Metal plate for premix burner

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EP1087180A1 (de) † 1999-09-24 2001-03-28 Joh. Vaillant GmbH u. Co. Geschlossenes Verbrennungssystem mit Schwankungenminderungsvorrichtung
US6540505B1 (en) † 1998-09-01 2003-04-01 Toby Ag Burner for liquid fuel
EP1538395A1 (de) † 2003-12-05 2005-06-08 Riello S.p.a. Brennerkopf für einen Vormischbrenner

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Publication number Priority date Publication date Assignee Title
US4766883A (en) † 1986-02-26 1988-08-30 Mor-Flo Industries, Inc. Forced draft controlled mixture heating system using a closed combustion chamber
US6540505B1 (en) † 1998-09-01 2003-04-01 Toby Ag Burner for liquid fuel
EP1087180A1 (de) † 1999-09-24 2001-03-28 Joh. Vaillant GmbH u. Co. Geschlossenes Verbrennungssystem mit Schwankungenminderungsvorrichtung
EP1538395A1 (de) † 2003-12-05 2005-06-08 Riello S.p.a. Brennerkopf für einen Vormischbrenner

Also Published As

Publication number Publication date
PT2037175T (pt) 2017-02-27
EP2037175B1 (de) 2016-11-23
PL2037175T5 (pl) 2025-11-12
ITMI20071751A1 (it) 2009-03-13
ES2616500T3 (es) 2017-06-13
ES2616500T5 (en) 2025-04-07
EP2037175A2 (de) 2009-03-18
EP2037175A3 (de) 2012-11-21
PL2037175T3 (pl) 2017-05-31

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