EP1192391A1 - Bruleur atomiseur pour le dispositif de chauffage d'un vehicule - Google Patents

Bruleur atomiseur pour le dispositif de chauffage d'un vehicule

Info

Publication number
EP1192391A1
EP1192391A1 EP01940336A EP01940336A EP1192391A1 EP 1192391 A1 EP1192391 A1 EP 1192391A1 EP 01940336 A EP01940336 A EP 01940336A EP 01940336 A EP01940336 A EP 01940336A EP 1192391 A1 EP1192391 A1 EP 1192391A1
Authority
EP
European Patent Office
Prior art keywords
baffle plate
combustion chamber
atomizer
burner according
diameter
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
EP01940336A
Other languages
German (de)
English (en)
Other versions
EP1192391B1 (fr
Inventor
Felix Wolf
Bernd Mittmann
Johann Sperl
Thomas Kerscher
Josef Amann
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.)
Webasto Thermosysteme GmbH
Webasto Thermosysteme International GmbH
Original Assignee
Webasto Thermosysteme GmbH
Webasto Thermosysteme International 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 Webasto Thermosysteme GmbH, Webasto Thermosysteme International GmbH filed Critical Webasto Thermosysteme GmbH
Publication of EP1192391A1 publication Critical patent/EP1192391A1/fr
Application granted granted Critical
Publication of EP1192391B1 publication Critical patent/EP1192391B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/06—Baffles or deflectors for air or combustion products; Flame shields in fire-boxes
    • 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

Definitions

  • the present invention relates to an atomizer burner for a vehicle heater according to the preamble of claim 1.
  • Atomizer burners with which the energy bound in fossil fuels can be converted into thermal energy, are already used in a wide variety of areas (see, for example, WO 87/00605 or DE 39 01 126 A1).
  • atomizer burners or nozzle atomizer burners in the power range of ⁇ 10 kW are generally not used, since the atomization quality is considered insufficient for smaller outputs and a high electrical power consumption is required to achieve an adequate atomization quality.
  • atomizer burners show poor burning behavior in the partial load range, since the atomization quality is worse here than under full load.
  • nozzle atomizer burners of the known type have poor cold start behavior, since the atomization quality deteriorates due to the increasing viscosity of the fuel as the temperature decreases. Large fuel droplets pass through the combustion chamber unevaporated or only partially vaporized, which is the cause of high starting emissions. Poor exhaust gas quality, even if it is only during the start-up phase, is no longer acceptable today, taking into account the increased sensitivity of the market with regard to environmental issues.
  • the object of the present invention is therefore to provide an atomizer burner for a vehicle heater, which enables good combustion behavior and low emissions even at lower powers in the part-load range and during the cold start phase.
  • An atomizer burner for a vehicle heater, with a combustion chamber containing a bluff body and with a fuel atomizing device atomizing into the combustion chamber, the distance from the atomizing point of the atomizing device being smaller than the diameter of the combustion chamber or the diameter of a cylindrical of the combustion chamber, a baffle plate acting as a bluff body is provided.
  • the baffle plate as a bluff body has the effect of flame stabilization, which has an advantageous effect on reducing the flame noise and on improving the combustion, in particular at lower outputs or in the part-load range of the burner.
  • the baffle plate has a particularly advantageous effect when realizing compact combustion chambers for liquid fuels. Thanks to the baffle plate, the burner equipped with it can also process poorer atomization qualities without this having a negative effect on the burner behavior. Likewise, the possibility of realizing partial load stages in which the atomization quality is poorer than in the full load stage is improved.
  • the baffle plate can be, among other things, conical, convex or concave.
  • the arrangement of the baffle plate in the flame zone makes it easier to re-ignite the fuel on the glowing plate after a flame has broken off, as is caused, for example, by air bubbles in the fuel line.
  • CO and HC emissions can be reduced when a combustion process ends by reacting on the glowing baffle plate.
  • the baffle plate can be designed as a plate with a collar with a height of, for example, 2 mm against the direction of atomization of the fuel, so that it forms a flat pot.
  • the ratio of Baffle plate diameter to combustion chamber diameter is preferably between 0.6 and 0.9 and the ratio of the axial distance of the baffle plate from the atomization point to the combustion chamber diameter is preferably between 0.3 and 0.6. Due to the suitable dimensioning of the baffle plate, an only insignificantly increased pressure loss of the combustion chamber is achieved compared to other aerodynamic measures, whereby, for example, the tangential component of a swirling combustion air flow is only slightly disturbed, so that the fuel gases can still flow with a swirl component downstream of the baffle plate.
  • the baffle plate is preferably fixed with fastening tabs.
  • the baffle plate can have openings in the form of slots and / or bores, the openings preferably being in the form of a defined perforation in the baffle plate.
  • the baffle plate can also be designed as a ring with a central through hole.
  • a chamber can be arranged on the baffle plate, into which a glow device in the form of a glow plug, for example made of ceramic, or in the form of a glow plug protrudes.
  • the starting behavior of the burner is improved by the arrangement of the glow device in the area of the flow of flow upstream of the baffle plate.
  • the chamber is preferably designed such that the glow device protrudes into it such that the radiation energy of the glow device downstream of the atomization device can be used to heat the component of the baffle plate.
  • the baffle plate can be fixed, among other things, on the combustion chamber, on the combustion chamber base or on aerodynamic internals, such as a swirl device for the combustion air.
  • the baffle plate can preferably consist of high-alloy steel, ceramic or ceramic-coated steel. Further properties and advantages of the present invention will become apparent from the following description of preferred exemplary embodiments of the invention with reference to the accompanying drawings; therein shows:
  • FIG. 1 shows a cross section through an atomizer burner.
  • FIG. 2 shows a perspective view of a combustion chamber with a combustion tube or flame tube
  • FIG. 3 shows a cross section through the combustion chamber according to FIG. 2;
  • FIG. 4 shows a plan view of the baffle plate of the combustion chamber according to FIG. 2,
  • FIG. 5 shows a variant of FIG. 1 with a concave baffle plate
  • Fig. 6 shows a variant of Fig. 1 with a convex baffle
  • Fig. 7 shows another variant of Fig. 1 with a conical baffle.
  • this atomizer burner consists of an atomizer nozzle 2, which is preceded by an air-guiding device 4 for swirling the combustion air entering the atomizer nozzle 2.
  • a fuel supply line 6 can be seen on the left-hand side, to which the fuel to be atomized in the atomizing nozzle 2 is supplied.
  • the atomizer nozzle 2 is connected to a cylindrical heat shield 8 on its side facing the combustion chamber 24 (see FIG. 5).
  • This heat shield 8 can be provided with secondary air bores 10, which are also provided in the flange 12 behind the heat shield 8, which is used to fasten the atomizer nozzle 2 inside the combustion chamber or within the vehicle.
  • the atomizer burner is also provided with a glow device 16, which can be a glow plug, preferably made of a ceramic material, or a glow plug, with the aid of which the atomized fuel mixture is ignited.
  • a glow device 16 which can be a glow plug, preferably made of a ceramic material, or a glow plug, with the aid of which the atomized fuel mixture is ignited.
  • an ignition device not shown, which is common in atomizing burners, is provided for generating an ignition spark.
  • the bluff body or the baffle plate 18 is arranged within the flame zone of the burner, whereby the flame stability is improved.
  • the baffle plate 18 also acts to deflect the malfunction and thus to stabilize the flame.
  • the baffle plate 18 is preferably made of high-alloy steel and has a collar 20 of approximately 2 mm in height facing the atomizing nozzle 2.
  • the baffle plate 18 can also consist of ceramic material or a high-alloy steel coated with a ceramic material.
  • the baffle plate 18 is fastened to the heat shield 8 with fastening tabs 22.
  • FIG. 2 shows a perspective view of a combustion chamber 24 provided with a baffle plate 18, the rear of the
  • Combustion chamber 24 a flame tube 26 is arranged. The one shown in the
  • Baffle plate 18D is fastened in the combustion chamber 24 via fastening tabs 22.
  • a start chamber 28 is arranged on the baffle plate 18D, into which a glow device can protrude. Through this start chamber 28, areas of the baffle plate can be used as a "hot spot" to heat the start chamber 28 or the baffle plate 18D.
  • the start chamber 28 also serves as a calming zone in which a pilot flame is formed more quickly, which evaporates the atomized fuel accelerates and thus leads to faster ignition when starting the burner.
  • the starting chamber 28 is arranged on the edge of the baffle plate 18D in the present embodiment. As an alternative to this, it can also be fastened at any other location of the baffle plate, or can be formed integrally therewith, in particular when the baffle plate 18 is in a flat configuration. The position of the starting chamber 28 is ultimately determined by the position of the glow device.
  • FIGS. 3 and 4 show the embodiment according to FIG. 2 once in a sectional view and another time in a top view of the baffle plate 18.
  • the combustion chamber in FIGS. 2 to 4 is combined with the burner according to FIG. 1 in such a way that the heat shield 8 is preferably inserted into the combustion chamber 24 on the inside, the baffle plate 18 alternatively on the heat shield 8, as shown in FIG. 1 , or to the combustion chamber 24, as shown in FIGS. 2 to 4, can be attached.
  • the heat shield 8 can also be attached to the combustion chamber 24, in which case recesses are provided in the heat shield 8.
  • bores 30 and slots 32 are additionally formed on the baffle plate 18. Such bores 30 or slots 32 are optionally provided. You can either as a predetermined hole pattern with only one or more holes 30 or with one or more slots 32 or - As shown - as combinations of bores 30 and slots 32 presence.
  • the baffle plate 18A is concave. Furthermore, the combustion chamber 24, which surrounds the heat shield 8 on the outside, is indicated in this figure. Such a combustion chamber 24 is also present in the other embodiments.
  • the baffle plate 18D is convex, i. H. formed with a curvature directed towards the atomizer nozzle 2.
  • the baffle plate 18C is conical.
  • the tip of the cone can also be directed towards the atomizing nozzle 2.
  • the ratio of the axial distance of the baffle plate 18, 18A, 18B, 18C or 18D from the atomization point P is approximately between 0.3 and 0.6. It is also advantageous in all of the illustrated embodiments if the ratio of the diameter of the baffle plate 18, 18A, 18B, 18C or 18D to the diameter of the combustion chamber 24 or to the diameter of the heat shield 8 arranged in the combustion chamber 24 is approximately between 0.6 and 0 , 9 lies. With these numerical ratios, the best combustion results have been shown in practice.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Spray-Type Burners (AREA)

Abstract

L'invention concerne un brûleur atomiseur destiné au dispositif de chauffage d'un véhicule, qui comprend une chambre de combustion contenant un accumulateur (18) et un dispositif atomiseur (2) qui atomise un combustible pour le faire entrer dans la chambre de combustion. Le brûleur selon l'invention se caractérise en ce qu'à l'intérieur de la chambre de combustion se trouve une plaque de chicane (18) qui joue le rôle d'un accumulateur, dans le sens de pulvérisation du combustible, à une certaine distance du point d'atomisation du dispositif atomiseur (2), distance qui est plus petite que le diamètre de la chambre de combustion ou que le diamètre d'un écran thermique (8) qui s'étend dans la chambre de combustion.
EP01940336A 2000-04-17 2001-04-17 Bruleur atomiseur pour le dispositif de chauffage d'un vehicule Expired - Lifetime EP1192391B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10019198A DE10019198A1 (de) 2000-04-17 2000-04-17 Zerstäuberbrenner
DE10019198 2000-04-17
PCT/EP2001/004336 WO2001079755A1 (fr) 2000-04-17 2001-04-17 Bruleur atomiseur pour le dispositif de chauffage d'un vehicule

Publications (2)

Publication Number Publication Date
EP1192391A1 true EP1192391A1 (fr) 2002-04-03
EP1192391B1 EP1192391B1 (fr) 2004-08-25

Family

ID=7639187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01940336A Expired - Lifetime EP1192391B1 (fr) 2000-04-17 2001-04-17 Bruleur atomiseur pour le dispositif de chauffage d'un vehicule

Country Status (7)

Country Link
US (1) US6644959B2 (fr)
EP (1) EP1192391B1 (fr)
JP (1) JP2003531353A (fr)
KR (1) KR100786146B1 (fr)
CN (1) CN1140426C (fr)
DE (2) DE10019198A1 (fr)
WO (1) WO2001079755A1 (fr)

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US7357820B2 (en) * 2001-09-05 2008-04-15 Webasto Ag System for converting fuel and air into reformate
DE10210034B4 (de) * 2002-03-07 2009-10-01 Webasto Ag Mobiles Heizgerät mit einer Brennstoffversorgung
DE10218623B4 (de) * 2002-04-25 2004-03-25 Webasto Thermosysteme International Gmbh Zerstäuberbrenner für ein Heizgerät
DE10221495B4 (de) * 2002-05-14 2004-03-11 Webasto Thermosysteme International Gmbh Brenner für ein Heizgerät
DE10224350B3 (de) * 2002-05-29 2004-01-22 Webasto Thermosysteme International Gmbh Zerstäuberbrenner mit einem Venturirohr für ein Heizgerät
DE10227810B4 (de) * 2002-06-21 2004-08-26 Webasto Thermosysteme International Gmbh Brenner für ein Heizgerät mit einer Prallscheibe
DE10241791B4 (de) * 2002-09-06 2004-09-23 Webasto Thermosysteme International Gmbh Brenner, insbesondere Venturibrenner, mit einem Brennkammerrohr
AU2003233909A1 (en) * 2003-02-28 2004-09-17 Webasto Ag Nozzle for spraying liquid fuel
JP2005116356A (ja) * 2003-10-08 2005-04-28 Nissan Motor Co Ltd 燃焼器支持構造
DE10347509B4 (de) * 2003-10-13 2006-08-10 Webasto Ag Heizgerät mit einer Zerstäuberdüse
DE10350103B3 (de) * 2003-10-27 2005-03-10 Webasto Ag Fahrzeugtechnik Brenner für ein mobiles Heizgerät mit einer Prallscheibe
DE102004002246A1 (de) * 2004-01-15 2005-08-11 J. Eberspächer GmbH & Co. KG Vorrichtung zur Erzeugung eines Luft/Kohlenwasserstoff-Gemischs
DE102004005113B4 (de) * 2004-02-02 2006-02-23 Webasto Ag Venturi-Brenner mit einem Abfangkörper
DE102004016333B4 (de) * 2004-04-02 2006-08-31 Webasto Ag Heizgeräte-Brenner mit einer Prallscheibe
DE102004034868B4 (de) * 2004-07-19 2008-09-25 Webasto Ag Brenner für ein Heizgerät
DE102005054662B4 (de) * 2004-11-17 2008-08-14 Webasto Ag Brenner für ein Heizgerät mit verbesserter Prallscheibe
DE102005054661B4 (de) * 2004-11-17 2008-08-14 Webasto Ag Brenner für ein Heizgerät mit verbesserter Brennstoffzuführung, verbessertem Hitzeschild und verbesserter Prallscheibe
DE112005003408A5 (de) * 2004-11-17 2007-10-25 Webasto Ag Brenner für ein Heizgerät mit verbessertem Hitzeschild
DE102005054656B4 (de) * 2004-11-17 2010-03-04 Webasto Ag Brenner für ein Heizgerät mit verbesserter Brennstoffzuführung
CA2594577A1 (fr) * 2004-11-17 2006-05-26 Webasto Ag Bruleur pour un appareil de chauffage, presentant une alimentation en combustible, un ecran thermique et un deflecteur ameliores
CA2595021A1 (fr) * 2004-11-17 2006-05-26 Webasto Ag Bruleur pour un appareil de chauffage presentant un deflecteur ameliore
DE102005054657B4 (de) * 2004-11-17 2009-04-09 Webasto Ag Brenner für ein Heizgerät mit verbessertem Hitzeschild
JP2008520949A (ja) * 2004-11-17 2008-06-19 ベバスト・アクチィエンゲゼルシャフト 改良型燃料供給部を備えたヒータ用バーナ
DE102004057270B4 (de) * 2004-11-26 2006-08-17 Webasto Ag Brennstoffverdampferelement für ein Heizgerät
DE102008033096A1 (de) * 2008-07-15 2010-02-11 Uhde Gmbh Verfahren und Vorrichtung zum Zünden und zum Betrieb von Brennern bei der Vergasung kohlenstoffhaltiger Brennstoffe
US9249704B2 (en) 2012-08-07 2016-02-02 Hino Motors, Ltd. Burner for exhaust gas purification devices
WO2014024942A1 (fr) * 2012-08-07 2014-02-13 日野自動車 株式会社 Brûleur
CN104024734A (zh) 2012-08-07 2014-09-03 日野自动车株式会社 排气净化装置用燃烧器
JP5740057B2 (ja) * 2012-08-13 2015-06-24 日野自動車株式会社 バーナー
WO2017009903A1 (fr) * 2015-07-10 2017-01-19 株式会社長野セラミックス Brûleur à combustible mixte

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Also Published As

Publication number Publication date
WO2001079755A1 (fr) 2001-10-25
CN1366594A (zh) 2002-08-28
US20020136997A1 (en) 2002-09-26
DE10019198A1 (de) 2001-10-18
DE50103379D1 (de) 2004-09-30
KR20020023958A (ko) 2002-03-29
JP2003531353A (ja) 2003-10-21
CN1140426C (zh) 2004-03-03
EP1192391B1 (fr) 2004-08-25
KR100786146B1 (ko) 2007-12-18
US6644959B2 (en) 2003-11-11

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