EP0227637B1 - Brûleur à mazout - Google Patents

Brûleur à mazout Download PDF

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Publication number
EP0227637B1
EP0227637B1 EP19860890355 EP86890355A EP0227637B1 EP 0227637 B1 EP0227637 B1 EP 0227637B1 EP 19860890355 EP19860890355 EP 19860890355 EP 86890355 A EP86890355 A EP 86890355A EP 0227637 B1 EP0227637 B1 EP 0227637B1
Authority
EP
European Patent Office
Prior art keywords
mixing tube
section
flue gas
combustion air
oil burner
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
EP19860890355
Other languages
German (de)
English (en)
Other versions
EP0227637A2 (fr
EP0227637A3 (en
Inventor
Helmut Dr. Brücker
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.)
Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts
Original Assignee
Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts
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 Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts filed Critical Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts
Publication of EP0227637A2 publication Critical patent/EP0227637A2/fr
Publication of EP0227637A3 publication Critical patent/EP0227637A3/de
Application granted granted Critical
Publication of EP0227637B1 publication Critical patent/EP0227637B1/fr
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
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/402—Mixing chambers downstream of the nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel

Definitions

  • the invention relates to an oil burner with an oil atomization device, a combustion air supply coaxially surrounding this, which opens into an aperture, and with a mixing tube open at both ends for fuel, combustion air and exhaust gas, which is arranged downstream of the aperture in a combustion chamber, wherein Exhaust gas coming directly from the combustion chamber is sucked around the outside of the mixing tube and into a first, upstream section thereof.
  • Oil burners with recirculation of hot exhaust gas that comes directly from the combustion chamber at the beginning of the combustion chamber are known as blue burners or gasification oil burners.
  • An oil burner with the features mentioned in the introductory part of claim 1 is known from DE-4-27 00 671. This oil burner has the advantage of particularly soot-free and complete combustion with good thermal efficiency. However, they only achieve these goals within a relatively narrow performance range.
  • the invention has for its object to improve an oil burner of the type mentioned while maintaining its advantages with regard to the smallest possible emission of pollutants in an extended performance range.
  • both the combustion air supply surrounding the oil atomization device and a downstream, second section of the mixing tube, which is expanded compared to the first section thereof, for supplying a mixture from the Exhaust gas and combustion air removed from the boiler are connected to a line for supplying combustion air and a line for supplying cooled exhaust gas via a mixing device, the line for supplying the mixture of exhaust gas and combustion air opening into the mixing tube in the region of its expansion from the outside.
  • an oil atomization device 1 arranged in the longitudinal axis of the oil burner is coaxially surrounded by a combustion air supply which has an inner region 2 and an outer region 16.
  • a combustion air supply which has an inner region 2 and an outer region 16.
  • an aperture 3 is arranged at the end of the inner area 2 of the combustion air supply.
  • the aperture 3 is followed by a mixing tube 4 which is coaxial with the oil burner and is open at both ends.
  • the mixing tube 4 has a first section 5 which is widened with respect to the diaphragm opening 3 and a second section 6 which is widened with respect to the first section 5.
  • the extension 7 of the mixing tube 4 is designed as a step and is located approximately in the middle of the longitudinal extension of the mixing tube 4.
  • the mixing tube 4 is arranged in a combustion chamber 8, which has a first section 9 which extends approximately to the extension 7 of the mixing tube 4 and has a second section 10, which connects with its opening 11 to a boiler, not shown in FIG. 1.
  • the first section 9 of the combustion chamber 8 has a radially outer jacket 12, which serves as a line for the supply of a mixture of exhaust gas and combustion air, and an annular space 13 adjoining it on the inside.
  • the annular space 13 connects the second section 10 of the combustion chamber 8 to the inlet opening of the mixing tube 4. Due to the injector action of the gas mixture emerging from the orifice 3, hot exhaust gas is converted from the second section 10 of the combustion chamber 8 through the axially parallel lines 18 and the annular space 13 around the mixing tube 4 sucked into this outside.
  • the combustion air supply with its areas 2 and 16, which surrounds the oil atomization device 1, is acted upon by a mixture of cooled exhaust gas and combustion air removed from the boiler.
  • the end of the outer region 16 of the combustion air supply is connected to the outer jacket 12 of the first section 9 of the combustion chamber 8 via an annular aperture 17 with two perforated rings which can be rotated relative to one another.
  • the jacket 12 is in turn connected to the beginning of the enlarged, second section 6 of the mixing tube 4 via radial lines which are arranged between the axially parallel lines 18. Due to the injector action on the step-shaped extension 7 of the mixing tube 4, the mixture of cooled exhaust gas from the boiler and combustion air emerging from the radial lines mixes well with the hot gas mixture emerging from the first section 5 of the mixing tube 4.
  • a substoichiometric atmospheric oxygen-fuel ratio ( ⁇ 1) is set in the first section 5 of the mixing tube 4.
  • regulation takes place by means of corresponding control valves in the air and / or oil supply line to the burner, as will be explained further with reference to FIG. 2.
  • the regulation takes place via the ring aperture 17.
  • An ionization probe IS monitors the combustion temperature in the combustion chamber 8.
  • An ignition device 19 is arranged in the area of the aperture 3 in the oil burner.
  • Thermal insulation layers 20, 21 provide insulation of the outer jacket 12 of the first section 9 of the combustion chamber 8 with respect to the annular space 13.
  • FIG. 2 the gas, oil and air lines are shown with solid lines and the electrical control lines with dashed lines.
  • the oil burner is designated in FIG. 2 with B, the boiler with K and a process control unit with P.
  • NT-ART low-temperature exhaust gas recirculation
  • Another line to the oil burner B is used for the supply of heating oil and leads via a pump PU and a control valve to the oil burner B.
  • a gas line that is only available in the case of heating with gaseous fuel leads via a control valve to the oil burner B.
  • a drive unit M drives the fan G and the oil pump P.
  • HT-ARF high-temperature exhaust gas recirculation
  • the output lines of the process control unit P lead to a mixing valve air-boiler exhaust gas, to the drive unit M, to the control valve in the oil line and possibly to the control valve in the gas line.
  • Another outlet line of the process control unit P leads to the ignition Z of the burner (ignition device 19 in FIG. 1).

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

Claims (6)

1. Brüleur à mazout comprenant un dispositif de pulvérisation de mazout (1), une arrivée d'air de combustion (2, 16, 12) entourant ce dispositif coaxialement et débouchant dans une ouverture de diaphragme (3), ainsi qu'un tube mélangeur (4) ouvert à ses deux extrémités pour du combustible, de l'air de combustion et du gaz d'échappement, ce tube étant disposé en aval de l'ouverture de diaphragme (3) dans une chambre de combustion (8), du gaz d'échappement provenant directement de la chambre de combustion étant aspiré extérieurement autour du tube mélangeur et dans un premier tronçon (5) amont de ce dernier, caractérisé par le fait qu'aussi bien l'amenée d'air de combustion (2, 16, 12) entourant le dispositif de pulvérisation de mazout (1) qu'un deuxième tronçon (6) aval du tube mélangeur (4), qui est élargi par rapport au premier tronçon (5) dudit tube, sont reliés, en vue de l'amenée d'un mélange de gaz d'échappement prélevé de la chaudière et d'air de combustion, à une conduite pour l'amenée d'air de combustion et à une conduite pour l'aménée de gaz d'échappement refroidi, en passant par un dispositif mélangeur, la conduite (16, 12) pour l'amenée du mélange de gaz d'échappement et d'air de combustion débouchant de l'extérieur dans le tube mélangeur (4) dans la zone de l'élargissement (7) de ce dernier.
2. Brûleur à mazout suivant la revendication 1, caractérisé par le fait qu'un rapport sous-stoechiométrique entre l'oxygène de l'air et le combustible est établi dans le premier tronçon amont (5) du tube mélangeur (4) et qu'un rapport essentiellement stoechiométrique entre l'oxygène de l'air et le combustible est établi dans le deuxième tronçon (6) du tube mélangeur (4).
3. Brûleur à mazout suivant la revendication 1, caractérisé par le fait qu'un dispositif de réglage de débit, par exemple un diaphragme annulaire à trous (17), est prévu dans la conduite pour l'amenée du mélange de gaz d'échappement et d'air de combustion dans le deuxième tronçon (6) du tube mélangeur (4).
4. Brûleur à mazout suivant la revendication 1, caractérisé par le fait que l'élargissement (7) du tube mélangeur (4) est établi en forme de gradin et se trouve à peu près au milieu de la longueur du tube mélangeur (4).
5. Brûleur à mazout suivant l'une des revendications 1 à 4, caractérisé par le fait que la chambre de combustion (8) présente un premier tronçon (9) s'étendant à peu près jusqu'à l'élargissement (7) du tube mélangeur (4) et présentant une enveloppe (12) radialement extérieure, traversée par le mélange de gaz d'échappement et d'air de combustion, et un espace annulaire (13) s'y accordant intérieurement et servant au retour, dans le tube mélangeur (4), de gaz d'échappement provenant directement de la chambre de combustion (8), et que l'enveloppe extérieure (12) est reliée au tube mélangeur (4) dans la zone de l'élargissement (7) de ce dernier en passant par des conduites orientées radialement par rapport au tube mélangeur (4).
6. Brûleur à mazout suivant les revendications 3 et 5, caractérisé par le fait que la conduite (2, 16) pour amener le mélange de gaz d'échappement et d'air de combustion est reliée, dans sa zone (16) radialement extérieure, par une sortie (17) réglable, à l'enveloppe (12) radialement extérieure du premier tronçon (9) de la chambre de combustion (8).
EP19860890355 1985-12-23 1986-12-23 Brûleur à mazout Expired - Lifetime EP0227637B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3744/85 1985-12-23
AT374485A AT387838B (de) 1985-12-23 1985-12-23 Oelbrenner

Publications (3)

Publication Number Publication Date
EP0227637A2 EP0227637A2 (fr) 1987-07-01
EP0227637A3 EP0227637A3 (en) 1988-09-21
EP0227637B1 true EP0227637B1 (fr) 1990-03-14

Family

ID=3554810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860890355 Expired - Lifetime EP0227637B1 (fr) 1985-12-23 1986-12-23 Brûleur à mazout

Country Status (3)

Country Link
EP (1) EP0227637B1 (fr)
AT (1) AT387838B (fr)
DE (1) DE3669580D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3822004A1 (de) * 1988-06-30 1990-01-04 Babcock Werke Ag Brenner
ATE199452T1 (de) * 1993-12-18 2001-03-15 Deutsch Zentr Luft & Raumfahrt Einstellbarer blaubrenner
AT407907B (de) * 1997-05-21 2001-07-25 Oemv Ag Brenner, insbesondere für heizöle
DE102010049513B4 (de) 2010-10-25 2012-06-06 Herbert Naumann Verbrennungskraftmaschine mit Arbeits- und Hilfszylindern
CN104807013B (zh) * 2015-05-08 2017-12-19 陈怀超 燃烧器喷头及具有它的燃烧器和水蒸汽裂解氢气燃烧方法
DE102020203423A1 (de) * 2020-03-17 2021-09-23 Dometic Sweden Ab Heizvorrichtung, Freizeitfahrzeug mit Heizvorrichtung und Verfahren zum Heizen von Fluiden in einem Freizeitfahrzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540821A (en) * 1968-04-01 1970-11-17 Exxon Research Engineering Co Flue gas recirculation burner
US3868211A (en) * 1974-01-11 1975-02-25 Aqua Chem Inc Pollutant reduction with selective gas stack recirculation
US4160526A (en) * 1977-03-24 1979-07-10 Flynn Burner Corporation Liquid fuel atomizing nozzle
DE3035707A1 (de) * 1980-09-22 1982-04-08 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Oel- und gasbrenner zum einbau in heizungs- und dampferzeugungskessel
DE3241730A1 (de) * 1982-11-11 1984-05-17 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Vergasungsoelbrenner mit einer oelzerstaeubungsvorrichtung

Also Published As

Publication number Publication date
ATA374485A (de) 1988-08-15
DE3669580D1 (de) 1990-04-19
EP0227637A2 (fr) 1987-07-01
EP0227637A3 (en) 1988-09-21
AT387838B (de) 1989-03-28

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