EP1489352A1 - Dispositif de mélange pour un brûleur au gaz ou au fioul - Google Patents

Dispositif de mélange pour un brûleur au gaz ou au fioul Download PDF

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Publication number
EP1489352A1
EP1489352A1 EP04013442A EP04013442A EP1489352A1 EP 1489352 A1 EP1489352 A1 EP 1489352A1 EP 04013442 A EP04013442 A EP 04013442A EP 04013442 A EP04013442 A EP 04013442A EP 1489352 A1 EP1489352 A1 EP 1489352A1
Authority
EP
European Patent Office
Prior art keywords
mixing device
combustion air
housing
air flow
nozzle assembly
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
EP04013442A
Other languages
German (de)
English (en)
Other versions
EP1489352B1 (fr
Inventor
Thomas Enzian
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.)
Robert Bosch GmbH
Original Assignee
BBT Thermotechnik 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 BBT Thermotechnik GmbH filed Critical BBT Thermotechnik GmbH
Publication of EP1489352A1 publication Critical patent/EP1489352A1/fr
Application granted granted Critical
Publication of EP1489352B1 publication Critical patent/EP1489352B1/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
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/408—Flow influencing devices in the air tube
    • 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
    • F23D11/001—Spraying nozzle combined with forced draft fan in one unit
    • 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
    • F23D2900/11401—Flame intercepting baffles forming part of burner head
    • 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
    • F23D2900/11403—Flame surrounding tubes in front of burner nozzle

Definitions

  • the invention relates to a mixing device for an oil or gas burner according to the preamble of claim 1.
  • a generic burner is known for example from EP 0 683 883 B1. It consists of a burner housing which has a support tube with a prechamber arranged in it and a flame tube adjoining it.
  • a nozzle assembly with a nozzle generating a fuel jet is arranged in the prechamber in the prechamber, and the fuel jet propagates into the flame tube.
  • the combustion air flow entering the combustion chamber is generated by a fan. This includes a partial flow close to the fuel jet and a partial flow that stabilizes recirculation.
  • the radially outer recirculation-stabilizing partial flow takes the form of a flow pattern corresponding to a ring flow interrupted in the circumferential direction, so that an internal recirculation flow running back from the blue-burning flame to the non-burning part of the fuel jet is formed in the combustion chamber.
  • the recirculation-stabilizing partial flow of the combustion air stabilizes the internal recirculation flow.
  • DE 199 48 876 A1 discloses a method for creating a homogeneous combustion air flow by changing the structure. The air flow is pressed through the impeller of a blower into the spiral duct of the blower housing and is guided from it in an approximately right-angled deflection into a burner housing arranged on the side.
  • the combustion air flows through air holes in a distributor element into the combustion zone of a fan burner.
  • a linear calming device preferably in the form of a lamellar grille, and / or a tubular calming device, preferably in the form of an end face to the distributor element, as the 1st step on the deflection from the spiral channel to the burner housing open cylinder grille, and / or as a 3rd stage a circular calmer in the form of a grille with small holes in front of the distributor element homogenizes the air flow.
  • the combustion air reaches the center of the cylindrical calming element via a relatively long lateral surface and from there to the orifice in the axial flow direction.
  • This arrangement may have an adverse effect on the quality of combustion and flame stability because of turbulence. These reach the diaphragm and / or the incoming combustion air passes unevenly through the jacket of the calming element.
  • the invention has for its object a compact mixer for to create an oil or gas burner as well as its combustion quality and robustness to optimize in different operating states.
  • the mixing device for an oil or gas burner is characterized in that a chamber with an equalizing element with finely divided passage openings for the combustion air flow is formed upstream of the orifice, between the orifice and the nozzle assembly.
  • the combustion air flow from the housing enters this radially and thus reaches the flow openings in the orifice evenly from all sides.
  • the cylindrical equalization element lies in the axial direction both on the diaphragm and on a closed boundary wall on the side of the nozzle assembly. It is arranged at a radial distance from the wall of the surrounding cylindrical housing so that an annular gap is created.
  • a perforated plate preferably forms the cylindrical equalization element.
  • the boundary wall of the chamber on the side of the nozzle assembly is placed thereon and the holding devices for the diaphragm, which can be attached to the boundary wall or directly on the nozzle assembly, are arranged within the equalization element.
  • the depth of the cylindrical equalizing element or the distance between the screen and the boundary wall corresponds to approximately half the diameter of the screen.
  • the diaphragm can also be attached to the boundary wall directly via the equalization element. Additional holding devices can then be omitted.
  • the boundary wall is on the side of the nozzle assembly extended to the wall of the housing and outside in the area of the annular gap provided with openings for the combustion air flow, the total cross sections preferably larger than the total cross sections of all through openings on Equalization element are selected. This is the first leveling out reached in the axial direction before the combustion air through the actual equalizing element steps through. Another is created in the redirection zone Chamber that is upstream of the chamber on the panel.
  • the equalization element can generally in the mouth of the combustion air duct and / or at the Flow guide elements, for example ribs, are arranged on the inside of the wall of the housing his.
  • cylindrical equalization elements are used different diameters, and each with different or the same cross sections or arrangements of the individual passage openings for the combustion air flow, arranged a short distance above each other. These are assigned to each other and ensure multiple equalization of the radial into the chamber on the aperture incoming combustion air.
  • the cross sections of the Passage openings for the combustion air flow on the jacket of an equalizing element vary if necessary. They are preferably near the aperture smaller cross sections available.
  • a compact mixing device created for an oil or gas burner as well as its combustion quality and robustness optimized in different operating conditions.
  • Blower with a combustion air duct, which is approximately at right angles to the axis of the Mixing device is aligned and its combustion air flow is not in the axial direction flowing into the housing upstream of the orifice is a uniform, if possible low-vortex flow guaranteed.
  • this can be costly Distribution and calming devices in the mouth of the combustion air duct omitted.
  • the overall structure of a mixing device is simplified and the entire burner gets very compact dimensions because of the arrangement of the fan or the combustion air duct no longer directly from the inflow situation depends on the mixing device, in particular upstream of the orifice.
  • the drawing shows an embodiment of the invention and shows in one Figure a vertical longitudinal section through a mixing device of an oil or gas burner.
  • the mixing device consists of a flame tube 1 which surrounds a combustion chamber 2, into which a fuel jet from a fuel nozzle 3 spreads. This is mounted upstream of the combustion chamber 2, just behind an orifice 4 with flow openings 5 for the combustion air, on a so-called nozzle assembly 6.
  • the combustion air flow is generated with a fan. It opens via a combustion air duct 7 at approximately a right angle to the axis of the mixing device into a housing 8 upstream of the orifice 4.
  • a chamber 9 surrounded by an equalizing element 10 with finely distributed passage openings 11 for the combustion air flow.
  • the combustion air flow enters the chamber 9 radially from the housing 8 and from there reaches the flow openings 5 in the orifice 4.
  • the cylindrical equalizing element 10 lies in the axial direction both on the orifice 4 and on a boundary wall 12 on the side of the Nozzle assembly 6 and forms an annular gap on the outside of the wall of the cylindrical housing 8.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP04013442.1A 2003-06-18 2004-06-08 Dispositif de mélange pour un brûleur au gaz ou au fioul Expired - Lifetime EP1489352B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003127391 DE10327391B3 (de) 2003-06-18 2003-06-18 Mischeinrichtung für einen Öl- oder Gasbrenner
DE10327391 2003-06-18

Publications (2)

Publication Number Publication Date
EP1489352A1 true EP1489352A1 (fr) 2004-12-22
EP1489352B1 EP1489352B1 (fr) 2013-08-14

Family

ID=33394856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04013442.1A Expired - Lifetime EP1489352B1 (fr) 2003-06-18 2004-06-08 Dispositif de mélange pour un brûleur au gaz ou au fioul

Country Status (2)

Country Link
EP (1) EP1489352B1 (fr)
DE (1) DE10327391B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115435338A (zh) * 2022-11-09 2022-12-06 中国空气动力研究与发展中心超高速空气动力研究所 一种采用混合喷嘴的大流量燃烧加热喷注器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10533740B2 (en) 2015-07-09 2020-01-14 Carrier Corporation Inward fired ultra low NOX insulating burner flange

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407504A1 (de) 1974-02-16 1975-08-28 Elco Oelbrennerwerk Ag Brennvorrichtung zum russfreien verbrennen von fluessigen brennstoffen
US4111642A (en) * 1975-12-01 1978-09-05 Max Weishaupt Gmbh Burner for liquid fuels
DE7823246U1 (de) * 1978-08-03 1978-11-09 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Brenner fuer fluessigen oder gasfoermigen brennstoff
DE2900640A1 (de) * 1979-01-09 1980-07-10 Weishaupt Max Gmbh Brenner fuer fluessige brennstoffe
EP0558455A1 (fr) * 1992-02-28 1993-09-01 Füllemann Patent Ag Brûleur, notamment brûleur à huile ou brûleur combiné huile/gaz
EP0683883B1 (fr) 1993-12-18 2001-02-28 Deutsches Zentrum für Luft- und Raumfahrt e.V. Bruleur a flamme bleue optimisant la combustion
DE19948876A1 (de) 1999-10-08 2001-04-19 Buderus Heiztechnik Gmbh Verfahren zum Schaffen eines homogenen Luftstroms in einem Gebläsebrenner und Gerät für seine Verwirklichung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19741508A1 (de) * 1997-08-16 1999-05-06 Buderus Heiztechnik Gmbh Mischeinrichtung
DE19737998A1 (de) * 1997-08-30 1999-03-04 Abb Research Ltd Brennervorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407504A1 (de) 1974-02-16 1975-08-28 Elco Oelbrennerwerk Ag Brennvorrichtung zum russfreien verbrennen von fluessigen brennstoffen
US4111642A (en) * 1975-12-01 1978-09-05 Max Weishaupt Gmbh Burner for liquid fuels
DE7823246U1 (de) * 1978-08-03 1978-11-09 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Brenner fuer fluessigen oder gasfoermigen brennstoff
DE2900640A1 (de) * 1979-01-09 1980-07-10 Weishaupt Max Gmbh Brenner fuer fluessige brennstoffe
EP0558455A1 (fr) * 1992-02-28 1993-09-01 Füllemann Patent Ag Brûleur, notamment brûleur à huile ou brûleur combiné huile/gaz
EP0683883B1 (fr) 1993-12-18 2001-02-28 Deutsches Zentrum für Luft- und Raumfahrt e.V. Bruleur a flamme bleue optimisant la combustion
DE19948876A1 (de) 1999-10-08 2001-04-19 Buderus Heiztechnik Gmbh Verfahren zum Schaffen eines homogenen Luftstroms in einem Gebläsebrenner und Gerät für seine Verwirklichung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115435338A (zh) * 2022-11-09 2022-12-06 中国空气动力研究与发展中心超高速空气动力研究所 一种采用混合喷嘴的大流量燃烧加热喷注器
CN115435338B (zh) * 2022-11-09 2023-01-03 中国空气动力研究与发展中心超高速空气动力研究所 一种采用混合喷嘴的大流量燃烧加热喷注器

Also Published As

Publication number Publication date
DE10327391B3 (de) 2004-12-16
EP1489352B1 (fr) 2013-08-14

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