EP0270424B1 - Zündvorrichtung für Hochgeschwindigkeitsbrenner mit kalter Düse und Brenner, der mit dieser Vorrichtung versehen ist - Google Patents

Zündvorrichtung für Hochgeschwindigkeitsbrenner mit kalter Düse und Brenner, der mit dieser Vorrichtung versehen ist Download PDF

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Publication number
EP0270424B1
EP0270424B1 EP87402535A EP87402535A EP0270424B1 EP 0270424 B1 EP0270424 B1 EP 0270424B1 EP 87402535 A EP87402535 A EP 87402535A EP 87402535 A EP87402535 A EP 87402535A EP 0270424 B1 EP0270424 B1 EP 0270424B1
Authority
EP
European Patent Office
Prior art keywords
ignition chamber
chamber
burner
ignition
bore
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.)
Expired - Lifetime
Application number
EP87402535A
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English (en)
French (fr)
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EP0270424A1 (de
Inventor
Claude Courrège
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.)
Stepack SARL
Original Assignee
Stepack SARL
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Filing date
Publication date
Application filed by Stepack SARL filed Critical Stepack SARL
Publication of EP0270424A1 publication Critical patent/EP0270424A1/de
Application granted granted Critical
Publication of EP0270424B1 publication Critical patent/EP0270424B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23D14/08—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 axial outlets at the 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
    • F23D14/70—Baffles or like flow-disturbing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/008—Structurally associated with fluid-fuel burners

Definitions

  • the present invention relates to an ignition device for burning at high speed, of the cold nozzle type.
  • Such a device is known from FR-A 2 520 090.
  • the start of the flame inside the ignition chamber is generated by the jets of gas mixture produced by the central perforations of the grate which undergo a phenomenon of relaxation and slow down.
  • the incipient flame of a substantially parabolic shape occupies only a fraction of this chamber. It emerges from the burner at high speed passing between the deflectors to then propagate in the open air, generating, beyond its front edge, a flow of hot air propagating axially with respect to the burner.
  • the cold nozzle effect is then due to the interaction of the lateral parts of the grid, the walls of the ignition chamber and, to a lesser extent, the deflectors.
  • the lateral parts of the grid form, with said walls, wedge-shaped spaces which. constitute dead spaces in which the flame cannot propagate.
  • These dead spaces are traversed by the jets of gas mixture originating from the perforations of the lateral parts of the grid which then abut and flow in a gas flow on the walls of the ignition chamber and on the deflectors.
  • This gaseous flow, not ignited therefore ensures thermal insulation and continuous cooling of the walls which cannot therefore heat up.
  • This phenomenon also extends to the deflectors which are therefore not licked by the flame and which also do not undergo heating.
  • the tubular housing of the spark plug forms a cavity generating a turbulent regime of the gas flow emitted by the perforations in the grid. Therefore, a permanent self-sustaining combustion of the gas flow can be established at this cavity, causing the wall of the ignition chamber to heat up, which is contrary to the desired objective.
  • the invention therefore more particularly aims to eliminate these drawbacks. It therefore proposes a burner of the aforementioned type characterized in that the ignition chamber in which an ignition electrode extends is an ignition cavity external to the ignition chamber, and communicates with the latter by means of a drilling.
  • this orifice as well as those of the ignition chamber are provided in such a way that combustion of the gaseous mixture cannot permanently develop inside the ignition chamber.
  • the ignition chamber can be formed by a blind cylindrical bore made in an external metal part fixed to the wall of the ignition chamber.
  • This bore axially parallel to the longitudinal axis of the burner, is then closed, on the side opposite the bottom by an electrode holder made of electrically insulating material, which delimits an ignition cavity in which the electrode extends axially.
  • This cavity is also connected to the ignition chamber by means of a transverse bore communicating with an orifice in the wall of said chamber.
  • the fuel mixture injected into the adaptation chamber 5 forms, through the perforations of the grid 16, a succession of jets flowing at high speed (of the order of 2400 m / min).
  • these jets are oriented axially (in the axis of the tubing), while in the lateral parts, they are substantially radial and abut on the walls 12, 13 and on the deflectors 17 , 18.
  • the flame F propagates towards the outside of the ignition chamber with a substantially straight parabolic axial cross-section shape, without licking the walls of the chamber 6 and the deflectors 17,18.
  • the lateral parts of the grid form with the walls 12, 13 wedge-shaped spaces which constitute dead spaces in which the flame cannot propagate.
  • the ignition device comprises an ignition chamber 20 consisting of a blind bore 20 'made in a room.
  • a cylindrical electrode holder 22 made of electrically insulating material from which coaxially leaves an ignition electrode 23 which extends in the ignition chamber.
  • This electrode 23 is, moreover, connected to an electric generator, for example a piezoelectric generator, by means of an electric cable 23 '.
  • the ignition chamber 20 communicates with the ignition chamber 6 by means of a transverse bore 24 made in the part 21, which corresponds with a bore 25 made in the wall 13 of the ignition chamber 6.
  • the holes 24 and 25 are dimensioned so as to form an access passage for the gas mixture in the ignition chamber 20.
  • the emission of a spark by the electrode 23 causes an abrupt combustion of the gas mixture in the ignition chamber 20.
  • the combustion gases are then ejected by the passage formed by the bores 24, 25 and come , consequently, ignite the gas mixture flow which leaves the central perforations of the grid 16.
  • This passage 24, 25 must necessarily have a reduced section so as to avoid any possibility of turbulence of the gas mixture in its vicinity which would lead to the establishment of permanent combustion.
  • the ignition device does not cause self-sustaining parasitic combustion, capable of causing heating of the burner.

Landscapes

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

Claims (4)

1. Hochgeschwindigkeitsbrenner mit kalter Düse, wobei besagter Brenner zum Einsatz bringt:
- einen Injektor (1) klassischen Typs, gebildet durch Kombination einer Düse (2) zur Einführung eines brennbaren, unter Druck stehenden Gases mit einer Mischleitung (3) in die besagte Düse (2) das Gas einströmen lässt und in die Aussenatmosphäre mündenden Öffnungen (4), durch welche die Aussenluft durch Ventureffekt in die Leitung (3) gesaugt, dem brennbaren Gas zugemischt und in der Leitung (3) beschleunigt wird, um einen Gasgemischstrom hoher Geschwindigkeit zu bilden;
- eine Anpassungskammer (5), in welche der Injektor (1) mündet und die in einer Öffnung endet, welche mit einem nach aussen gewölbten Gitter (16) versehen ist;
- eine Brennkammer (6), in welcher die Verbrennung mit grosser Geschwindigkeit aus den Löchern des Gitters (16) austretenden Gasgemisches eingeleitet wird, wobei besagte Brennkammer (6) vom einem rohrähnlichen, die Anpassungskammer (5) verlängernden Element gebildet wird;
- Ablenkmittel, welche in der Öffnung der Brennkammer angeordnet sind und zwei Deflektoren (17, 18) aufweisen, die so ausgerichtet sind, dass sie, von zwei einander gegenüberliegenden Zonen der besagten Öffnung aus aufeinander zulaufen, und
- eine Zündkammer, welche mit Mitteln zur Einleitung der Verbrennung des Gasgemischstroms versehen ist,

dadurch gekennzeichnet, dass die Zündkammer (20), in welche eine Zündelektrode (23) hineinreicht, eine ausserhalb der Brennkammer (6) gelegene Vertiefung ist und mit dieser durch eine in der Wand (13) der Brennkammer vorgesehenen Bohrung (25) in Verbindung steht.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Zündkammer (20) von einer unechten zylindrischen Bohrung (20') gebildet wird, welche in einem äusseren, an der Wand (13) der Brennkammer (6) befestigten Metallstück (21) ausgeführt ist und dass besagte Bohrung (20'), deren Achse parallel zur Längsachse des Brenners verläuft, am ihrem Boden gegenüberliegenden Ende durch einen Elektrodenträger (22) aus elektrisch leitendem Material geschlossen wird, welcher eine Vertiefung begrenzt, in der sich axial die Elektrode (23) erstreckt.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass besagte Vertiefung (20) mit der Brennkammer (6) durch eine Querbohrung (24) verbunden ist, welche mit einer Öffnung (25) in der Wand der besagten Brennkammer (6) in Verbindung steht.
4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass besagte Durchgangsöffnung (24, 25) mindestens teilweise einen vier- oder rechteckigen Querschnitt aufweist.
EP87402535A 1986-11-12 1987-11-10 Zündvorrichtung für Hochgeschwindigkeitsbrenner mit kalter Düse und Brenner, der mit dieser Vorrichtung versehen ist Expired - Lifetime EP0270424B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615969 1986-11-12
FR8615969A FR2606491B1 (fr) 1986-11-12 1986-11-12 Dispositif d'allumage pour bruleur a haute vitesse de type a buse froide et bruleur utilisant ledit dispositif

Publications (2)

Publication Number Publication Date
EP0270424A1 EP0270424A1 (de) 1988-06-08
EP0270424B1 true EP0270424B1 (de) 1990-02-07

Family

ID=9340889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402535A Expired - Lifetime EP0270424B1 (de) 1986-11-12 1987-11-10 Zündvorrichtung für Hochgeschwindigkeitsbrenner mit kalter Düse und Brenner, der mit dieser Vorrichtung versehen ist

Country Status (6)

Country Link
US (1) US4846716A (de)
EP (1) EP0270424B1 (de)
JP (1) JPS63220015A (de)
DE (2) DE3761705D1 (de)
ES (1) ES2002688B3 (de)
FR (1) FR2606491B1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906179A (en) * 1988-07-01 1990-03-06 Tokai Corporation Inner combustion type of gaslighter
FR2635169B1 (fr) * 1988-08-02 1990-11-09 Guilbert Express Sa Generateur d'air chaud a gaz
US5324194A (en) * 1993-07-15 1994-06-28 Carrier Corporation Snap-in hot surface ignitor bracket
US5520536A (en) * 1995-05-05 1996-05-28 Burner Systems International, Inc. Premixed gas burner
DE10027719A1 (de) * 2000-06-03 2001-12-13 Braun Gmbh Katalytische Gasverbrennungseinrichtung für ein Gerät des persönlichen Bedarfs
US6621197B1 (en) 2001-03-14 2003-09-16 Illinois Tool Works Inc. Gas spark plug fastener and ignition gap ground
FR2884594B1 (fr) * 2005-04-18 2007-06-01 Sefmat Sa Bruleur/generateur d'air chaud a allumage interne
EP1941207B1 (de) * 2005-10-28 2011-07-06 Sefmat Heissluftbrenner/-erzeuger mit interner zündung
CN100422636C (zh) * 2006-08-23 2008-10-01 傅宁娟 利用回热加热的低NOx油枪装置
US9410698B2 (en) * 2011-10-11 2016-08-09 Rinnai Corporation Tubular burner
CA2878086C (en) * 2012-07-03 2020-07-28 Ulrich Dreizler Burner with surface burning
CN102954490B (zh) * 2012-12-10 2015-10-28 中国船舶重工集团公司第七一一研究所 一体气化炉带压点火装置
US20150184848A1 (en) * 2013-12-26 2015-07-02 Rinnai Corporation Tubular Burner
AU2013276997B2 (en) * 2013-12-27 2018-11-29 Rinnai Corporation Tubular burner
DE102014100254B4 (de) * 2014-01-10 2017-10-05 Rational Aktiengesellschaft Feuerungsvorrichtung sowie Verfahren zur Detektion von Flüssigkeit in einer Feuerungsvorrichtung
CN110621934A (zh) * 2017-05-24 2019-12-27 贝卡尔特燃烧技术股份有限公司 内部点火预混合气体燃烧器

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
FR1317804A (de) * 1963-05-08
US554253A (en) * 1896-02-11 Robert gilmour finlay
US1354295A (en) * 1918-03-06 1920-09-28 Esda Mfg Company Gas-burner for water-heaters
US2105344A (en) * 1936-10-13 1938-01-11 Garnet W Mckee Gaseous fuel burner
FR917099A (fr) * 1945-11-07 1946-12-24 Déflecteur de chaleur pour chalumeau
US2985233A (en) * 1956-08-03 1961-05-23 Vaillant Joh Kg Bunsen burners
US3035632A (en) * 1957-11-12 1962-05-22 Sievert Ab Max Gas torch for welding of plastic materials
DE1629898A1 (de) * 1967-10-24 1971-03-25 Witten Edelstahl Brenner zur Zuendung von Gasgemischen
USRE28665E (en) * 1971-11-10 1975-12-23 Heat gun
BE791005A (fr) * 1971-11-10 1973-03-01 Zagoroff Dimiter S Procede et appareillage de chauffage a basse temperature et de contraction de matiere plastique
US4082497A (en) * 1976-03-29 1978-04-04 Ex-Cell-O Corporation High capacity quiet burner for hot air heating system
GB2030280B (en) * 1977-09-29 1982-03-10 Hadland & Olive Ltd Heat gun
DE2819108C2 (de) * 1978-04-29 1980-01-10 Messer Griesheim Gmbh, 6000 Frankfurt Vorrichtung zum Zünden des Heizgases eines Maschinenschneidbrenners
DE2822192A1 (de) * 1978-05-20 1979-11-22 Msk Verpackung Syst Gmbh Handschrumpfgeraet fuer die erzeugung eines heissluftstrahls zum schrumpfen von kunststoffolien o.dgl.
FR2427551A1 (fr) * 1978-05-29 1979-12-28 Rippes Sa Bruleur pour chalumeau a gaz
FR2520090B1 (fr) * 1982-01-15 1986-09-19 Guilbert & Fils Leon Bruleur a gaz de puissance reglable pour retracter les matieres thermo-retractables, notamment en vue de l'emballage de produits plus ou moins volumineux
DE3363723D1 (en) * 1982-04-27 1986-07-03 Msk Verpackung Syst Gmbh Burner producing hot gas
DE3333054A1 (de) * 1983-09-14 1985-03-21 Ing. Paul Joosten Verpackungstechnik, 4180 Goch Brenner

Also Published As

Publication number Publication date
US4846716A (en) 1989-07-11
JPS63220015A (ja) 1988-09-13
FR2606491B1 (fr) 1989-03-03
FR2606491A1 (fr) 1988-05-13
EP0270424A1 (de) 1988-06-08
JPH0435649B2 (de) 1992-06-11
DE270424T1 (de) 1988-10-13
DE3761705D1 (de) 1990-03-15
ES2002688B3 (es) 1990-06-01
ES2002688A4 (es) 1988-10-01

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