EP1686317B1 - Ensemble de chambre de combustion pour un appareil de chauffage de véhicule - Google Patents

Ensemble de chambre de combustion pour un appareil de chauffage de véhicule Download PDF

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Publication number
EP1686317B1
EP1686317B1 EP05026750.9A EP05026750A EP1686317B1 EP 1686317 B1 EP1686317 B1 EP 1686317B1 EP 05026750 A EP05026750 A EP 05026750A EP 1686317 B1 EP1686317 B1 EP 1686317B1
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EP
European Patent Office
Prior art keywords
combustion chamber
fuel
ignition element
evaporator medium
porous evaporator
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.)
Active
Application number
EP05026750.9A
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German (de)
English (en)
Other versions
EP1686317A2 (fr
EP1686317A3 (fr
Inventor
Wolfgang Pfister
Christoph Köberle
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
Eberspaecher Climate Control Systems GmbH and Co KG
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Publication date
Application filed by Eberspaecher Climate Control Systems GmbH and Co KG filed Critical Eberspaecher Climate Control Systems GmbH and Co KG
Publication of EP1686317A2 publication Critical patent/EP1686317A2/fr
Publication of EP1686317A3 publication Critical patent/EP1686317A3/fr
Application granted granted Critical
Publication of EP1686317B1 publication Critical patent/EP1686317B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D3/00—Burners using capillary action
    • F23D3/40—Burners using capillary action the capillary action taking place in one or more rigid porous bodies
    • 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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner
    • 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
    • F23D2900/05002—Use of porous members to convert liquid fuel into vapor
    • 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
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05004—Special materials for walls or lining

Definitions

  • the present invention relates to a combustion chamber assembly for a vehicle heater, which is used for example as a parking heater or as a heater in a vehicle.
  • Known combustion chambers are generally designed such that an ignition organ receiving projection, also referred to as a plug neck, is provided on an approximately cup-shaped combustion chamber housing with a circumferential wall and a bottom region on the peripheral wall, which limits an open volume region to a combustion chamber formed in the combustion chamber housing.
  • an ignition organ receiving projection also referred to as a plug neck
  • a porous evaporator medium is provided, and the fuel supply via a fuel line, which opens into the Zündorganingansatz and thus introduces the liquid fuel into the provided therein porous evaporator medium.
  • the fuel is distributed not only in the provided in the Zündorganingansatz porous evaporator medium, but passes from this in the porous evaporator medium on the inside of the peripheral wall.
  • the feeding of the liquid fuel in the area of the Zündorganingansatzes ensures that in the starting phase, in which are provided in this locally very limited range by exciting the ignition sufficiently high temperatures, a sufficient amount of fuel is available to start the combustion. Only in the started combustion operation, the flame then spreads further into the combustion chamber, so that the required combustible mixture is provided by the there and via the evaporator medium on the inside of the peripheral wall evaporating liquid fuel and the combustion air also fed into the combustion chamber and burned becomes.
  • a problem of such combustion chamber assemblies is that the distribution characteristic is very much dependent on the installation position of the combustion chamber assembly or of a vehicle heater having it due to the locally very limited fuel feed. It must always be ensured that a positioning is found in which the Zündorganoritsatz is in an upper range, so that the action of gravity supports the fuel distribution and does not counteract it. Also, in such an embodiment, it is difficult to ensure in all operating states of a vehicle heater that the temperature in the region of the fuel inlet is not so high that the fuel initially fed in liquid starts to boil, since this leads to considerable deposits in the region of the fuel inlet , Here is especially the shutdown of such a heater in which the combustion is to be stopped, critical.
  • the Zündorganingansatz known from this prior art is arranged so that it is elongated substantially radially with respect to a longitudinal center axis of a combustion chamber housing, and thus its longitudinal center axis substantially intersects the longitudinal center axis of the combustion chamber housing.
  • the opening of the Zündorganingansatzes to the combustion chamber is provided over the combustion chamber in the combustion chamber a Flammeneinleitelement, which influences the propagation of the pilot flame in the combustion chamber.
  • a combustion chamber assembly for a vehicle heater comprises a combustion chamber housing with a peripheral wall and a bottom portion surrounding a combustion chamber, at the peripheral wall at least two open to the combustion chamber and in this approximately tangentially opening Zündorganamharmae, at one Inside the peripheral wall and from each of the Zündorganamarteries a porous evaporator medium, a Brennstoffzumoltechnische extracts fuel to the porous evaporator medium in each of the Zündorganingan accounts, on the inside of a porous evaporator medium is provided, and in at least one of the Zündorganfactan accounts an electrically excitable firing organ.
  • a porous evaporator medium be provided on the inside of each of the Zündorganama.
  • the provision of ignition devices in all Zündorganingst algorithmsn allows, for example, at relatively low ambient temperatures a much shorter start-up phase, since the combustion starting from several local areas, namely the respective Zündorganingst algorithmsn is started. This is particularly advantageous when such a vehicle heater is to be operated as a heater, i. when an internal combustion engine of a vehicle is started, as soon as possible to provide additional heat energy.
  • two Zündorganinganticiane are provided, which are arranged and the two Zündorganinganticiane with respect to a longitudinal center plane of the combustion chamber housing to each other substantially symmetrically. Due to the symmetry with respect to a longitudinal center plane, that is essentially a mirror symmetry, the uniformity of the fuel introduction and also of the heat energy introduction in the starting phase is further improved.
  • a combustion chamber assembly 10 is shown as it finds application in a used as a heater or auxiliary heater vehicle heater.
  • the combustion chamber assembly 10 comprises a substantially cup-shaped combustion chamber housing 12 with an approximately cylindrical peripheral wall 14 and at an axial end portion, axially relative to a longitudinal center axis A of the combustion chamber housing 12, a bottom portion 16.
  • the combustion chamber housing 12 At the axial end opposite the bottom portion 16, the combustion chamber housing 12th open to the exit of the combustion products.
  • the floor area 16 has an approximately axially extending combustion air inlet nozzle 18 with a plurality of, for example, slot-like openings 20 for the entry of combustion air into a combustion chamber 24 provided in the combustion chamber housing 12.
  • two approximately cylindrical Zündorganinganharmae 26 are provided on the peripheral wall 14 of the generally made of metal material combustor housing 12. These are open to the combustion chamber 24 and open approximately tangentially in this one.
  • the two Zündorganinganarteries 26 may for example be arranged at an acute angle to each other and are preferably positioned on the peripheral wall 14 so as to give a symmetrical arrangement.
  • the two Zündorganinganticiane 26 with respect to a already mentioned longitudinal center axis A containing and, for example, in the illustration of Fig. 1 Orthogonal to the plane of the longitudinal median plane E mirror symmetrically arranged.
  • the two Zündorganingan accounts 26 are preferably also made of metal and may be connected to the peripheral wall 14 by welding or soldering, but can also be produced integrally therewith, for example in a casting process.
  • a porous evaporator medium 28 which is adapted to the shaping of the circumferential wall and likewise provided in a substantially cylindrical configuration, is provided.
  • This preferably coats the entire combustion chamber 24 and provides the surface over which liquid fuel in vapor form can be delivered into the combustion chamber 24.
  • the two Zündorganingan accounts 26 are each lined on its inside with porous evaporator medium 30. Again, an arrangement is provided in which the Zündorganingan accounts 26 preferably on the entire Are lined inside and further in which the respective porous evaporator medium 30 extends into the region of the porous evaporator medium 28 on the inside of the peripheral wall 14 and is in communication therewith.
  • the porous evaporator medium 28 on the inside of the circumferential wall 14 and the respective porous evaporator medium 30 on the inside of the respective Zündorganfactansatzes 26 may be constructed of nonwoven material, braid, knitted fabric, ceramic foam or other material in its interior volume pore having material, wherein the porosity on the viscosity of to be used liquid fuel is tuned so that a distribution of the in the inner volume region of a respective porous evaporator medium 28 and 30 reached liquid fuel also takes place under capillary force.
  • the feed of the liquid fuel takes place in the region of the two Zündorganingan accounts 26 by a respectively opening into this fuel line 32.
  • the supplied via the respective fuel line 32 fuel thus enters the porous evaporator medium 30 of each Zündorganingansatzes 26 and initially distributed primarily in this porous evaporator medium 30th
  • this porous evaporator medium 30 due to the contact of this porous evaporator medium 30 with the porous evaporator medium 28, the already mentioned feed of the fuel in liquid form into the region of the combustion chamber 24 takes place.
  • the fuel is then discharged in vapor form into the inner volume region of the respective Zündorganingansatzes 26 and the combustion chamber housing 12 at the inwardly exposed surface of the porous evaporator medium 30 and 28 to there together with the supplied via the supply port 18 combustion air an ignitable mixture form.
  • one or more openings are present in the region of the ignition element receiving lugs 26, via which air can be introduced in order to further support the formation of an ignitable mixture in these ignition element receiving lugs 26.
  • each of the Zündorganingan accounts 26 an example designed as Glühzünd21 or glow plug igniter 34 is provided. This can be carried on a respective Zündorganingansatz 26 on its side facing away from the combustion chamber side carrier element 36. Through this support element, a connecting element 38 can continue to be guided, which allows the electrical contacting of the respective ignition member 34.
  • both Zündorganinganticiane 26 with an ignition device 34.
  • These can be operated simultaneously in the start phase, so that, of course, simultaneous fuel feed via the associated lines 32, the combustion is started starting from two local areas and thus the start phase can be made significantly shorter. Since in such a start phase two ignition elements 34 are to be excited simultaneously, there is a higher load of the on-board voltage system, since the double current flow is to be expected, as with excitation of only one ignition device. Due to the time-phase but significantly shortened start-up phase, the energizing of two ignition devices 34 means no or no substantial increase in the required energy. Of course, it is possible to specify in such a start phase, provided at the then at least in phases at the same time to be excited ignition devices 34 electrical heating corresponding to the desired starting procedure.
  • a further advantage of the arrangement according to the invention is that a plurality of distributed regions for fuel injection are created by a plurality of Zündorganfactanticiane 26, each with associated porous evaporator medium 30 and fuel line 32, but are located away from the areas with relatively high combustion temperatures.
  • the amount of fuel to be distributed to the various Zündorganaufnahmake accounts 26 can be distributed according to the requirements occurring. For example, may be provided by a conventional branch in a main supply that each of the areas to be supplied with the same amount of fuel is supplied, or that locally different amounts of fuel are fed, for example by providing corresponding throttle points.
  • the distributed fuel feed also has the advantage of a more uniform temperature level in the combustor 24, which also counteracts the tendency of scale generation and generally counteracts the formation of pollutants.
  • the cooling of the combustion chamber can be prevented especially during cold starts, so when starting in the temperature range of -30 ° C to -40 ° C, and thus the risk of flame breaks are reduced. It is also important that in the presence of multiple ignition organs failure of an ignition device is acceptable, since in principle the heater can then be started with the existing ignition or the organs. So it is then not necessary, for example, visit a workshop immediately because of the failure of an ignition device. In principle, it is then possible to continue working with the remaining ignition device, at least until routine maintenance is required.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (3)

  1. Module de chambre de combustion pour un dispositif de chauffage pour un véhicule, comprenant:
    - un boîtier de chambre de combustion (12) avec une paroi circonférentielle (14) et une section de fond (16), entourant une chambre de combustion (24),
    - à la paroi circonférentielle (14) une pièce de connexion recevant un élément d'allumage (26) ouverte envers la chambre de combustion,
    - à une surface intérieur de la paroi circonférentielle (14) et de la pièce de connexion recevant un élément d'allumage (26) un médium d'évaporation poreux (28, 30),
    - un arrangement de conduite d'alimentation de combustible (32) pour insérer du combustible dans le médium d'évaporation poreux (30) dans la pièce de connexion recevant un élément d'allumage (26),
    caractérisé en ce que deux desdites pièces de connexion recevant un élément d'allumage (26) sont prévues, un élément d'allumage électriquement excitable (34) étant prévu dans au moins une des pièces de connexion recevant un élément d'allumage (26) et en ce que les deux pièces de connexion recevant un élément d'allumage (26) mènent approximativement tangentiellement dans la chambre de combustion (34) et sont arrangées suivant un angle aigu de sorte qu'en relation à un plan central longitudinal (E) de la chambre de combustion (12) ils sont essentiellement en arrangement de symétrie spéculaire l'une par rapport à l'autre.
  2. Module de chambre de combustion selon la revendication 1,
    caractérisé par un élément d'allumage (34) étant prévu dans chacun des pièces de connexion recevant un élément d'allumage (26).
  3. Module de chambre de combustion selon une des revendications 1 ou 2,
    caractérisé en ce que le médium d'évaporation poreux (30) prévu à la surface interne d'au moins une des pièces de connexion recevant un élément d'allumage (26) est en communication avec le médium d'évaporation poreux (28) prévu à la surface interne de la paroi circonférentielle (14).
EP05026750.9A 2005-01-31 2005-12-07 Ensemble de chambre de combustion pour un appareil de chauffage de véhicule Active EP1686317B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510004358 DE102005004358A1 (de) 2005-01-31 2005-01-31 Brennkammerbaugruppe für ein Fahrzeugheizgerät

Publications (3)

Publication Number Publication Date
EP1686317A2 EP1686317A2 (fr) 2006-08-02
EP1686317A3 EP1686317A3 (fr) 2008-10-08
EP1686317B1 true EP1686317B1 (fr) 2017-02-22

Family

ID=36286698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05026750.9A Active EP1686317B1 (fr) 2005-01-31 2005-12-07 Ensemble de chambre de combustion pour un appareil de chauffage de véhicule

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EP (1) EP1686317B1 (fr)
DE (1) DE102005004358A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005037622A1 (de) * 2005-08-09 2007-02-15 J. Eberspächer GmbH & Co. KG Fahrzeugheizsystem
DE102005055642A1 (de) * 2005-11-22 2007-05-24 J. Eberspächer GmbH & Co. KG Brennkammerbaugruppe für einen Verdampferbrenner
DE102007038705A1 (de) * 2007-08-16 2009-02-19 J. Eberspächer GmbH & Co. KG Verfahren zum Betreiben eines brennstoffbetriebenen Heizgeräts, insbesondere Fahrzeugheizgerät
DE102008012389A1 (de) * 2008-03-04 2009-09-10 J. Eberspächer GmbH & Co. KG Verfahren zum Betreiben eines brennstoffbetriebenen Fahrzeugheizgeräts
DE102010042184A1 (de) 2010-10-08 2012-04-12 J. Eberspächer GmbH & Co. KG Brennkammerbaugruppe für ein Fahrzeugheizgerät
JP5203489B2 (ja) * 2011-06-15 2013-06-05 中外炉工業株式会社 燃焼装置
DE102018127863A1 (de) * 2018-11-08 2020-05-14 Eberspächer Climate Control Systems GmbH & Co. KG Brennkammerbaugruppe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1247530B (de) * 1963-03-29 1967-08-17 Robert Von Linde Dipl Ing Brenner fuer fliessfaehige Brennstoffe
JPH0246851B2 (ja) * 1985-07-11 1990-10-17 Shintachikawa Kokuki Kk Sharyoyodanbosochinobaanaa
CZ285196B6 (cs) * 1994-05-13 1999-06-16 J. Eberspächer Gmbh & Co. Spalovací komora hořáku pro topné těleso motorového vozidla nebo pro filtr spalinových částic
DE19529994C2 (de) * 1994-11-10 2003-06-26 Eberspaecher J Gmbh & Co Verdampferbrenner für ein Heizgerät
DE10005376A1 (de) * 1999-02-12 2000-08-17 Denso Corp Verbrennungsheizer zur Verwendung in einem Kraftfahrzeug
JP3792116B2 (ja) * 2000-04-27 2006-07-05 株式会社デンソー 燃焼式ヒータ
DE10111153B4 (de) * 2001-03-08 2004-12-02 J. Eberspächer GmbH & Co. KG Heizgerät
DE10164225B4 (de) * 2001-12-31 2004-04-08 Webasto Thermosysteme International Gmbh Verdampfungsbrenner
DE10219633C1 (de) * 2002-05-02 2003-12-04 Eberspaecher J Gmbh & Co Verdampferbrenner

Also Published As

Publication number Publication date
DE102005004358A1 (de) 2006-08-03
EP1686317A2 (fr) 2006-08-02
EP1686317A3 (fr) 2008-10-08

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