EP0270424A1 - 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
EP0270424A1
EP0270424A1 EP87402535A EP87402535A EP0270424A1 EP 0270424 A1 EP0270424 A1 EP 0270424A1 EP 87402535 A EP87402535 A EP 87402535A EP 87402535 A EP87402535 A EP 87402535A EP 0270424 A1 EP0270424 A1 EP 0270424A1
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EP
European Patent Office
Prior art keywords
ignition
ignition chamber
chamber
burner
orifice
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
Application number
EP87402535A
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English (en)
French (fr)
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EP0270424B1 (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
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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 a high speed burner, of the cold nozzle type.
  • a burner of this kind involving: a conventional type injector formed by the combination of a nozzle for injecting pressurized combustible gas, for example propane, a mixing duct into which said nozzle flows, and orifices opening into the open air, by which air is sucked into the duct by a venturi effect, is mixed with the combustible gas and is accelerated in the duct to form a gas mixture flow at high speed; - An adaptation chamber, into which the injector opens, this adaptation chamber possibly having a flared shape ending in an orifice provided with a grid curved towards the outside; - An ignition chamber, in which the combustion of the gaseous mixture begins which emerges at high speed from the perforations of the grid, this ignition chamber being formed by a tubular element extending the adaptation chamber; and deflection means equipping the external opening of the ignition chamber and oriented so as to converge towards one another from two opposite zones of said opening.
  • pressurized combustible gas for example propane
  • a mixing duct
  • 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 an ignition device involving an ignition cavity external to the ignition chamber, and communicating with the latter through a passage opening of reduced section provided in the wall of the ignition chamber substantially at right of the front region of the grate, the section of this orifice being provided small enough to ensure that disturbances in the flow of gas mixture at this orifice cannot generate a self-sustaining parasitic combustion hearth capable of heating the wall of the ignition chamber.
  • 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 through a transverse bore communicating with an orifice in the wall of said chamber.
  • the burner consists more particularly: - a conventional type injector 1 comprising: . a nozzle 2 connected to a source of flammable gas (for example a propane cylinder) at a pressure of approximately 3 to 4 bars, . a pipe 3 into which said pressurized gas is injected, and .
  • a source of flammable gas for example a propane cylinder
  • this assembly forms a jet pump which entrains the air coming from the opening 4 and generates at the entry of the tube 3 a flow of gaseous mixture at high speed, of the order of 12660 meters / minute; an adaptation chamber 5 into which the tubing 3 opens, this chamber 5 having a flared tubular shape which extends the outlet section of the tubing 3 and comprises two very slightly convergent walls 7, 8, of increasing width, and two divergent side walls 9, 10 (FIG.
  • An ignition chamber 6 formed by a tubular portion 11, of parallelepiped shape, which comprises two relatively wide parallel faces 12, 13 which extend in the extension of the two converging walls 7, 8 of the chamber adaptation 5, and two parallel side faces 14, 15, of small width which extend in the extension of the two divergent walls 9, 10 of said chamber 5;
  • a double diffusion grid 16 which consists of two pieces of perforated sheet metal of semi-cylindrical shape, oriented perpendicular to the axis of the pipe 3 and parallel to the faces 12 and 13, this double grid which is fixed to the burner by its two longitudinal edges at the connection zone between the chambers 5 and 6, forms a curved partition whose concavity is oriented towards the interior of the adaptation chamber 5 and whose central part which has only a grid thickness is located near the outside orifice of the ignition chamber 6; - two deflectors 17, 18 respectively extending the two faces 12, 13 forming an angle of about 45 °
  • 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 cross-sectional 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 metal part 21 of parallelepiped shape, fixed to the wall 13 of the ignition chamber 6.
  • 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 a sudden combustion of the gas mixture in the ignition chamber 20.
  • the combustion gases are then ejected by the passage formed by the holes 24, 25 and, consequently, ignite the flow of gas mixture 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)
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
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
FR8615969 1986-11-12

Publications (2)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354099A1 (de) * 1988-08-02 1990-02-07 Guilbert Express S.A. Warmluft-Erhitzer für gasförmigen Brennstoff
WO2007048886A1 (fr) * 2005-10-28 2007-05-03 Sefmat Bruleur/generateur d'air chaud a allumage interne
CN102954490A (zh) * 2012-12-10 2013-03-06 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

Families Citing this family (13)

* 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
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
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
EP2870409B1 (de) * 2012-07-03 2020-03-25 Dreizler, Ulrich Brenner mit einer oberflächenverbrennung
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
US11215366B2 (en) * 2017-05-24 2022-01-04 Bekaert Combustion Technology B.V. Inwardly firing premix gas burner

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR917099A (fr) * 1945-11-07 1946-12-24 Déflecteur de chaleur pour chalumeau
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
DE2822192A1 (de) * 1978-05-20 1979-11-22 Msk Verpackung Syst Gmbh Handschrumpfgeraet fuer die erzeugung eines heissluftstrahls zum schrumpfen von kunststoffolien o.dgl.
GB2030280A (en) * 1977-09-29 1980-04-02 Hadland & Olive Ltd Heat gun
FR2520090A1 (fr) * 1982-01-15 1983-07-22 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
EP0092768A1 (de) * 1982-04-27 1983-11-02 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Brenner zur Erzeugung eines Heissgasstromes
DE3333054A1 (de) * 1983-09-14 1985-03-21 Ing. Paul Joosten Verpackungstechnik, 4180 Goch Brenner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US554253A (en) * 1896-02-11 Robert gilmour finlay
FR1317804A (de) * 1963-05-08
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
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
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
DE2819108C2 (de) * 1978-04-29 1980-01-10 Messer Griesheim Gmbh, 6000 Frankfurt Vorrichtung zum Zünden des Heizgases eines Maschinenschneidbrenners
FR2427551A1 (fr) * 1978-05-29 1979-12-28 Rippes Sa Bruleur pour chalumeau a gaz

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR917099A (fr) * 1945-11-07 1946-12-24 Déflecteur de chaleur pour chalumeau
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
GB2030280A (en) * 1977-09-29 1980-04-02 Hadland & Olive Ltd Heat gun
DE2822192A1 (de) * 1978-05-20 1979-11-22 Msk Verpackung Syst Gmbh Handschrumpfgeraet fuer die erzeugung eines heissluftstrahls zum schrumpfen von kunststoffolien o.dgl.
FR2520090A1 (fr) * 1982-01-15 1983-07-22 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
EP0092768A1 (de) * 1982-04-27 1983-11-02 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Brenner zur Erzeugung eines Heissgasstromes
DE3333054A1 (de) * 1983-09-14 1985-03-21 Ing. Paul Joosten Verpackungstechnik, 4180 Goch Brenner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354099A1 (de) * 1988-08-02 1990-02-07 Guilbert Express S.A. Warmluft-Erhitzer für gasförmigen Brennstoff
FR2635169A1 (fr) * 1988-08-02 1990-02-09 Guilbert Express Sa Generateur d'air chaud a gaz
WO2007048886A1 (fr) * 2005-10-28 2007-05-03 Sefmat Bruleur/generateur d'air chaud a allumage interne
CN102954490A (zh) * 2012-12-10 2013-03-06 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
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

Also Published As

Publication number Publication date
US4846716A (en) 1989-07-11
FR2606491A1 (fr) 1988-05-13
JPH0435649B2 (de) 1992-06-11
DE3761705D1 (de) 1990-03-15
DE270424T1 (de) 1988-10-13
FR2606491B1 (fr) 1989-03-03
ES2002688A4 (es) 1988-10-01
EP0270424B1 (de) 1990-02-07
JPS63220015A (ja) 1988-09-13
ES2002688B3 (es) 1990-06-01

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