EP0049426A1 - Brûleur à mazout - Google Patents

Brûleur à mazout Download PDF

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Publication number
EP0049426A1
EP0049426A1 EP81107610A EP81107610A EP0049426A1 EP 0049426 A1 EP0049426 A1 EP 0049426A1 EP 81107610 A EP81107610 A EP 81107610A EP 81107610 A EP81107610 A EP 81107610A EP 0049426 A1 EP0049426 A1 EP 0049426A1
Authority
EP
European Patent Office
Prior art keywords
oil
guide
air
outlet opening
guide body
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.)
Ceased
Application number
EP81107610A
Other languages
German (de)
English (en)
Inventor
Friedhelm Salzmann
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.)
Braukmann Kessel GmbH
Original Assignee
Braukmann Kessel GmbH
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 Braukmann Kessel GmbH filed Critical Braukmann Kessel GmbH
Publication of EP0049426A1 publication Critical patent/EP0049426A1/fr
Ceased 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
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
    • F23D11/102—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber
    • F23D11/103—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber with means creating a swirl inside the mixing chamber

Definitions

  • the invention relates to an oil burner with a swirl sensor arranged in a guide jacket for the combustion air and formed from guide vanes, which is provided in an attachment to an insert part of the guide jacket to create a negative pressure zone in a downstream of the oil inlet bore formed in the insert part and into one another conically narrowing burner tube opening cavity is set up.
  • the oil inlet bore of the insert body is designed as a pressure line and is provided with an atomizing nozzle at the outlet opening, downstream of which the ignition speed resulting from the pressure atomization of the oil and by means of the swirl sensor in a swirling movement of combustion air-forming air-oil mixture is only achieved along a water jacket coaxially surrounding the central combustion chamber of the boiler, for the combustion of which the oil burner is used.
  • any flame stabilization at a short distance downstream from the atomizer nozzle is dispensed with and instead a fairly strong negative pressure zone is built up at this point with the help of the swirl generator, in order to achieve a vaporization of the air-oil mixture that is favorable for the combustion of the atomizer nozzle with one pressure to get oil released.
  • the one caused by the twister Oil vapor trapped in the air swirl is converted into an oil mist in the combustion chamber of the boiler, as it is thrown out into the outer zones of the air swirl as a result of the prevailing centrifugal forces and is compensated there due to the higher pressure conditions compared to the vortex core.
  • the mixing of the extremely fine oil mist with the air therefore only takes place in these outer vortex zones, so that with the support of the water jacket of the combustion chamber, a stable method of burning an annular flame is obtained.
  • the dimensions and the general design of the combustion chamber of the boiler are decisive factors in these pressure atomizer oil burners, because they have an effect on the negative pressure zone which forms downstream of the atomizer nozzle.
  • the negative pressure zone is decisive for the stabilization of the flame, which cannot develop in front of the atomizing nozzle due to the higher air speed compared to the ignition speed of the air-oil mixture, nor should it develop in order to obtain a largely soot-free combustion.
  • an air curtain on the inside of the cavity downstream of the atomizer nozzle Back of a glow body constricting the cavity to the front and backed with an air screen either in the form of an annular shielding plate or a ceramic body.
  • the air curtain protrudes radially from a ring into the cavity and onto the outer air duct jacket connected air nozzles created, and the incandescent body is designed either in the manner of a swirl disk or as a close-meshed wire mesh.
  • the air curtain prevents the vacuum zone of the air vortex caused by the swirl device from expanding back into the cavity and secondary air from reaching the atomizing nozzle, so that after the air-oil mixture has ignited, the flame downstream of the atomizing nozzle is correspondingly strongly stabilized .
  • the incandescent body promotes the evaporation process of the oil discharged from the atomizing nozzle, as a result of which the combustion process can practically be concentrated in the immediate vicinity of the incandescent body.
  • the burner tube of the burner head provided in the outlet opening of the oil inlet bore
  • the feed line being provided via holes of possibly different diameters and staggered arrangement predominantly transversely to the outflow direction of the atomized air-oil mixture or can also be oriented a little obliquely forwards or backwards in order to the splitting contributing to a shortening of the flame length and to achieve simultaneous guidance of the flame.
  • die'S réelle aims a vacuum zone already in the burner pipe or in the combustion chamber of the boiler, and contrary, is intended to the supply line of the secondary air can only be achieved in that one to void tending unstable burning of the flame is prevented.
  • the invention achieves the object of providing an oil burner of the generic type which, regardless of the dimensions and design of the combustion chamber of the associated boiler, can also be used for a pressureless supply of highly viscous oils, with a minimum of Throughput capacity of not more than 1 kg / h is intended and the risk of a blockage of the outlet opening of the oil inlet bore should be guaranteed.
  • the advantages achieved by the invention are essentially that, with the backflow of the combustion air achieved by the arrangement of the guide body, even the most highly viscous oil is broken up into individual drops at the nozzle-free outlet opening of the oil inlet bore and these individual oil drops are then transformed in the mixing chamber experience in an oil mist that is ideal for mixing with the air.
  • These ideal conditions for the mixture formation are effectively supplemented by the prevailing conditions in the subsequent vacuum zone, which promote the formation of fog and thus create the conditions for a largely soot-free combustion process within the burner tube.
  • the strength of the breaking up of the oil into the droplet shape is more or less exclusively dependent on the size of the speed component with which the combustion air is caused to impact the oil, this impact being further influenced by the size of the negative pressure prevailing in front of the outlet opening, which also prevails in the mixing chamber and primarily downstream of it in the burner tube and in this promotes an ideal combustion process for the air-oil mixture particles.
  • the invention is explained in more detail below with reference to the drawing, which represents only one embodiment.
  • the drawing shows a longitudinal section through the head of an oil burner according to the invention.
  • the oil burner has a guide jacket 1 on its head, via which the combustion air is supplied in the direction of arrow 2.
  • a solid insert part 3 is inserted, on which a swirl generator formed from radially oriented guide vanes 4 is fastened, which causes the combustion air flowing in via the guide jacket 1 to swirl so strongly that it is in a cavity 5 of the insert part 3 for training a pronounced negative pressure zone.
  • the cavity 5 is formed downstream of the outlet opening 6 of an oil inlet bore 7, which is provided in the axis of the insert part 3 for a pressureless inlet of highly viscous oil and has a diameter of, for example, 1 mm.
  • the cavity 5 is connected directly to the outlet side of the swirl sensor formed by the guide vanes 4 and is delimited by a conical surface 8, in the tip of which the outlet opening 6 of the oil inlet bore 7 is formed.
  • a conically narrowing burner tube 9 is connected in one piece to the guide jacket 1 of the burner head and can also be flanged to the guide jacket 1 as a separate component. In a gap not shown in the drawing between the guide jacket 1 and The usual ignition electrodes and an ionization probe used for flame monitoring are arranged in the burner tube 9.
  • a guide body 10 Downstream of the nozzleless outlet opening 6 of the unpressurized oil inlet bore 7, a guide body 10 is inserted into the cavity 5, through which the combustion air supplied via the guide vanes 4 of the swirl generator within the guide jacket 1 experiences a backflow against the direction of the oil inlet.
  • the guide body 10 has a conical lateral surface 11 which is essentially complementary to the boundary surface 8 of the cavity 5, the tip of which is aligned with the outlet opening 6 of the oil inlet bore 7, so that a flow channel 12 for the combustion air is formed between the two surfaces 8 and 11 is accelerated in this flow channel to such a high flow velocity that the oil emerging from the outlet opening 6 is broken up into droplets by the air jet and then also experiences a first mixing with the air in this drop shape.
  • a central mixing chamber 13 is formed within the guide body 10, in which the air-oil mixture which is formed is further processed, the combustion air which has flowed back via the flow channel 12 and has previously been set in a swirling motion by the swirl device now being so strong inside the mixing chamber 13 Turbulence and flow velocity of the air-oil mixture particles produces that the negative pressure zone which is forming in the cavity 5 is now displaced towards the burner tube 9.
  • the combustion process of the air-oil mixture particles can thus take place within the burner tube 9, with which a sufficient distance from the outlet opening 6 of the oil inlet bore 7 can be maintained and their blockage can thus be prevented.
  • the guide body 10 should be arranged so as to be adaptable to differently highly viscous oils in relation to the outlet opening 6 of the oil inlet bore 7, so that different flow velocities of the combustion air can be regulated by changing the cross section of the return flow channel 12.
  • the guide body 10 should consist of a thermally conductive material in order to contribute to a corresponding preheating of the combustion air with its heating caused by the combustion gases. This preheating of the combustion air can be further favored in that a diffuser 14 is attached to the guide body 10, which is designed in the preferred embodiment of a ceramic body for sucking the combustion gases out of the burner tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Feeding And Controlling Fuel (AREA)
EP81107610A 1980-10-08 1981-09-24 Brûleur à mazout Ceased EP0049426A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3038063 1980-10-08
DE3038063A DE3038063C2 (de) 1980-10-08 1980-10-08 Ölbrenner

Publications (1)

Publication Number Publication Date
EP0049426A1 true EP0049426A1 (fr) 1982-04-14

Family

ID=6113942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107610A Ceased EP0049426A1 (fr) 1980-10-08 1981-09-24 Brûleur à mazout

Country Status (5)

Country Link
EP (1) EP0049426A1 (fr)
DE (1) DE3038063C2 (fr)
DK (1) DK446881A (fr)
ES (1) ES8207323A1 (fr)
NO (1) NO812984L (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3526482C1 (de) * 1985-07-24 1986-12-18 Deutsche Babcock Werke AG, 4200 Oberhausen Brenner zum Verbrennen von fluessigem Brennstoff
DE3702415C1 (de) * 1987-01-28 1988-04-21 Babcock Werke Ag Brenner
DE3928214A1 (de) * 1989-08-25 1990-03-08 Zimmermann Hans Georg Dipl Ing Brenner mit brenngas-rueckfuehrung fuer fliessfaehige brennstoffe
DE102004030747A1 (de) * 2004-06-25 2006-01-19 Weinmann Geräte für Medizin GmbH + Co. KG Verfahren und Vorrichtung zum Mischen von Sauerstoff und Luft

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE398795C (de) * 1924-07-15 Charles Dell Mosher OElfeuerung mit kegeligem Luftzufuehrungskoerper
US1853277A (en) * 1927-11-07 1932-04-12 Wayburn E Johnston Reverse blast oil burner
CH380851A (fr) * 1961-08-04 1964-08-14 Gen Chauffage Ind Pillard Frer Brûleur à mazout
AT248585B (de) * 1963-10-18 1966-08-10 Vaporapid Beteiligungs Gmbh Feuerung für flüssige Brennstoffe hohen Siedepunktes
CH435524A (de) * 1963-06-04 1967-05-15 Master Consolidated Inc Düse für mit Zerstäubung arbeitende Brenner
DE1273110B (de) * 1963-10-18 1968-07-18 Kaercher Fa Alfred Brenner fuer zu zerstaeubenden Brennstoff
DE1401754A1 (de) * 1961-04-29 1968-11-28 Black Sivialls & Bryson Inc Vorrichtung zum Vermischen von Fluden

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1802804A1 (de) * 1968-10-12 1970-06-11 Knoll Ag 1-[3'-Cyan-3'-(2'',3''-dimethoxyphenyl)-4'-methylpentyl]-2-methyl-6,7-dimethoxy-1,2,3,4-Tetrahydroisochinolin
DE2623759C3 (de) * 1976-05-26 1980-03-06 Heinrich Brauckmann Armaturenfabrik Gmbh, 6950 Mosbach Druckzerstäuber-Ölbrenner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE398795C (de) * 1924-07-15 Charles Dell Mosher OElfeuerung mit kegeligem Luftzufuehrungskoerper
US1853277A (en) * 1927-11-07 1932-04-12 Wayburn E Johnston Reverse blast oil burner
DE1401754A1 (de) * 1961-04-29 1968-11-28 Black Sivialls & Bryson Inc Vorrichtung zum Vermischen von Fluden
CH380851A (fr) * 1961-08-04 1964-08-14 Gen Chauffage Ind Pillard Frer Brûleur à mazout
CH435524A (de) * 1963-06-04 1967-05-15 Master Consolidated Inc Düse für mit Zerstäubung arbeitende Brenner
AT248585B (de) * 1963-10-18 1966-08-10 Vaporapid Beteiligungs Gmbh Feuerung für flüssige Brennstoffe hohen Siedepunktes
DE1273110B (de) * 1963-10-18 1968-07-18 Kaercher Fa Alfred Brenner fuer zu zerstaeubenden Brennstoff

Also Published As

Publication number Publication date
DE3038063C2 (de) 1983-07-28
ES506089A0 (es) 1982-09-01
NO812984L (no) 1982-04-13
DK446881A (da) 1982-04-09
ES8207323A1 (es) 1982-09-01
DE3038063A1 (de) 1982-05-06

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19820622

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Effective date: 19831017

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Inventor name: SALZMANN, FRIEDHELM