EP1522788B1 - Brûleur à vaporisation - Google Patents

Brûleur à vaporisation Download PDF

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Publication number
EP1522788B1
EP1522788B1 EP04012271.5A EP04012271A EP1522788B1 EP 1522788 B1 EP1522788 B1 EP 1522788B1 EP 04012271 A EP04012271 A EP 04012271A EP 1522788 B1 EP1522788 B1 EP 1522788B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
heat transfer
fuel
evaporator medium
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.)
Expired - Fee Related
Application number
EP04012271.5A
Other languages
German (de)
English (en)
Other versions
EP1522788A2 (fr
EP1522788A3 (fr
Inventor
Walter Blaschke
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
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 Eberspaecher Climate Control Systems GmbH and Co KG filed Critical Eberspaecher Climate Control Systems GmbH and Co KG
Publication of EP1522788A2 publication Critical patent/EP1522788A2/fr
Publication of EP1522788A3 publication Critical patent/EP1522788A3/fr
Application granted granted Critical
Publication of EP1522788B1 publication Critical patent/EP1522788B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • 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
    • F23M2900/13003—Energy recovery by thermoelectric elements, e.g. by Peltier/Seebeck effect, arranged in the combustion plant

Definitions

  • the present invention relates to an evaporator burner according to the preamble of claim 1, comprising an evaporator medium for feeding fuel into a combustion chamber, a Zündsammlung adopted for igniting present in the combustion chamber fuel vapor / air mixture and a tempering device with at least one tempering to thermally influence the in the fuel to be fed to the combustion chamber and / or the evaporator medium and / or the air to be fed into the combustion chamber.
  • Such an evaporator burner is from the DE 101 30 638 A1 known.
  • a combustion chamber housing bounding the combustion chamber is substantially pot-shaped and has at the bottom region on the side facing the combustion chamber to an evaporator medium of porous material.
  • the liquid fuel is fed via a Brennstoffzumol für in this porous evaporator medium, is distributed under capillary action in the evaporator medium and then evaporated at the combustion chamber facing surface of the evaporator medium. It thus forms fuel vapor, which then forms an ignitable fuel vapor / air mixture together with the combustion air also fed into the combustion chamber.
  • evaporator burners are often used for auxiliary heaters and heaters, they are generally operated with the same fuel as the internal combustion engine of a vehicle. This will be especially when used as a heater in general diesel fuel.
  • this is assigned to an electrically operable heater.
  • the evaporator medium is heated at its side facing away from the combustion chamber side, so that together with the evaporator medium and the distributed therein under capillary fuel, so for example diesel fuel, is heated and shows an improved Abdampf .
  • a soldering or welding apparatus in which the combustion gas to be burned for generating a residual gas flame is electrolytically generated in a gas generator.
  • a proportion of vaporized evaporator liquid is added to the fuel gas. This is vaporized in the gas generator, wherein by using a heating or cooling device, this comprising a plurality of Peltier batteries, it is ensured that the temperature of the evaporator liquid to be evaporated in an evaporator container is kept approximately constant.
  • an evaporator burner according to claim 1.
  • This comprises an evaporator medium for feeding fuel into a combustion chamber, a Zündsammlung adopted for igniting present in the combustion chamber fuel vapor / air mixture and a tempering with at least one tempering for thermal influencing of in the fuel to be fed to the combustion chamber and / or the evaporator medium and / or the air to be fed into the combustion chamber.
  • the at least one tempering comprises a Peltier element.
  • At least one Peltier element is used as the electrically operable tempering device.
  • Such Peltier elements have the elementary characteristic that they work as heat pumps. That is, by energizing a Peltier element, it can be ensured that heat is transported from one side thereof to the other, that is cooled on one side, while the heat extracted during the cooling is then discharged on the other side. When reversing the direction of flow, the direction of heat transport also reverses.
  • the Charalterizing with such a Peltier element not only generate heat or to be able to provide on a surface, as is the case with a conventional electrically operable heater, but to remove heat on a surface and thus also a component in contact therewith, uses the present invention, for example, also operating state-dependent of the critical area, so for example, the evaporator medium or to be fed into this or already fed liquid fuel, heat withdraw.
  • the danger of too spontaneous evaporation therefore does not exist, especially in combustion mode, in which comparatively high temperatures are present due to the ongoing combustion.
  • the possible cooling using a Peltier element ensures that the first still liquid fuel, so for example, the critical in terms of Abdampfungs characterizing gasoline, evenly distributed in the evaporator medium and then discharged into the combustion chamber controlled. Furthermore, the use of such a Peltier element opens up the possibility of transferring the heat drawn off on one side, ie, for example, from the evaporator medium to the air to be fed into the combustion chamber, so that it already enters the combustion chamber preheated and then mixed with the already evaporated fuel combustion with reduced pollutant emissions allows.
  • Peltier element as described above, by defined control of the same, of course, the heating of the evaporator medium or the fuel to be evaporated, which is for example before starting at relatively low ambient temperatures of great advantage, since by this preheating a shorter Starting phase can be obtained and is burned during the start phase or at the beginning of the ignition already with reduced pollutant emissions.
  • the evaporator burner according to the invention is constructed such that a combustion chamber housing is provided with a heat transfer, that on one of the combustion chamber side facing the heat transfer wall, the evaporator medium is provided and that in the region in which the evaporator medium is provided, on a side facing away from the combustion chamber side Heat transfer wall, the at least one tempering is provided.
  • the at least one tempering element has a heat transfer surface formation on its side remote from the heat transfer wall.
  • the heat transfer surface formation rib-like is trained.
  • the combustion characteristic can be improved, in particular also with regard to the emission of pollutants in the inventive use of one or more Peltier elements, that the at least one tempering is brought on a side remote from the heat transfer in heat transfer interaction with the air to be fed into the combustion chamber.
  • the air to be introduced into the combustion chamber and combusted together with a fuel vapor can already be preheated when the Peltier element is operated so that it withdraws heat from the region of the combustion chamber, for example the region of the evaporator medium.
  • the at least one tempering element In order to make the flow around the at least one tempering element with the air to be fed into the combustion chamber as efficient as possible, it is proposed that the at least one tempering element with its side facing away from the heat transfer wall and / or with the heat transfer surface formation project into an air guiding space.
  • Peltier elements are generally configured as planar, planar components, according to another embodiment which is advantageous in terms of joining, it can be provided that the combustion chamber housing is pot-shaped with a circumferential wall and a bottom wall and that the bottom wall forms at least part of the heat transfer wall.
  • a method for operating an evaporator burner which method provides that before and / or during an ignition / start phase of the evaporator burner, at least one Peltier element is operated such that the fuel or fuel to be fed into the combustion chamber / And the evaporator medium is heated and that at or / and after ignition at least one Peltier element is operated such that the fuel to be fed into the combustion chamber and / or the evaporator medium is cooled.
  • a generally designated 10 heater is shown with its essential components.
  • This heater 10 comprises an evaporator burner 12, which is supplied via an air supply area 14, the air required for combustion.
  • the heat generated during combustion is then transferred to a medium to be heated, for example air or water, by means of a heat exchanger, generally designated 14.
  • a heat exchanger generally designated 14.
  • an inner pot-like housing part 16 is shown, which limits a flow space for the medium to be heated together with a non-illustrated and surrounding outside also pot-like housing part.
  • the evaporator burner 12 itself comprises a combustion chamber housing generally designated 18, which has a basically pot-like structure.
  • a peripheral wall 20 and a bottom portion 22 of the combustion chamber housing 18 are formed as separate components and connected to each other to provide the cup-like structure.
  • the peripheral wall 20 is further connected to a flame tube 24 into which the combustion exhaust gases flowing through an integral with the peripheral wall 20 to flow therein on the housing part 16 of the heat exchanger 14 and then along a formed between the flame tube 24 and the housing part 16 Return flow space 26 toward a combustion exhaust outlet 28 to flow, as indicated by arrows P 1 .
  • the evaporator burner 12 or the combustion chamber housing 18 of the same is supported on a plate-like support member 30, in particular to achieve the required tightness between the housing member 16 and this support member 30, a sealing member 32 may be provided.
  • This carrier component 30, together with a further housing part 34, also delimits an air flow space 36, through which the air to be combusted in a combustion chamber 38 flows as indicated by arrows P 2 under the conveying action of a blower (not shown ) .
  • a ring-like flow space 40 is formed, in which the air flowing in the air flow space 36 enters air and then via formed in the peripheral wall 20 openings 42 into the combustion chamber 38 arrived.
  • a fuel supply line 44 opens.
  • this liquid fuel such as gasoline
  • the inner side of the bottom region 22 of the combustion chamber housing 18 is covered with a porous evaporator medium 46 designed in two layers here. At the side facing away from the combustion chamber 38 side takes this evaporator medium 46, the liquid fuel and transports this under capillary action in its outermost edge regions.
  • a plate-like distribution element 48 can be arranged between the two layers of the porous evaporator medium in that region which covers the junction area of the fuel supply line 44, which ensures that the fuel entering the porous evaporator medium 46 does not exist there straight to the combustion chamber 38 facing side of the porous evaporator medium 46 can flow, but must first be deflected radially.
  • an ignition element 50 is further provided, which extends over the porous evaporator medium 46 into the combustion chamber 38 inside.
  • This designed for example as Glühzündux ignition element 50 serves to ignite by generating local areas of high temperature existing in the combustion chamber 38 fuel vapor / air mixture and thus to start the evaporator burner 12.
  • a tempering device indicated generally at 52.
  • this comprises a plurality of Peltier elements 54 provided on the bottom wall region 22 of the combustion chamber housing 18.
  • a depression can be provided on the bottom wall region 22 on the side facing away from the combustion chamber 38 in association with each Peltier element 54, so that there the material thickness of the bottom wall region is reduced for improved heat transfer.
  • corresponding recesses 30 are provided in the support member, so that the Peltier elements 54 basically with their from the combustion chamber 38 and thus also the bottom wall area 22 side facing away from the air flow space 36 are free.
  • the Peltier elements 54 also provided with ribs, so that a better heat transfer contact between the Peltier elements 54 and the tempering device 52 and the air flowing in the air flow space 36 air can be obtained.
  • the Peltier elements 54 can be operated such that they transport heat from the side facing the bottom wall region 22 to the side facing away from the bottom wall region 22 and facing the air flow space 36, or vice versa.
  • the region of the bottom wall region 22 in contact with the Peltier elements 54 is cooled, and the heat removed there is released via the ribs 56 to the air flowing in the air flow chamber 36.
  • the porous evaporator medium 36 in contact therewith or the liquid fuel present therein are cooled or heat is drawn off therefrom.
  • the Peltier elements can be operated in this way be that they preheat the combustion chamber housing 18 and the bottom wall portion 22 and thus also the porous evaporator medium 46.
  • the evaporator burner 12 is brought into a state in which, when the liquid fuel is introduced via the Brennstoffzumoltechnisch 44, due to the already slightly elevated temperatures an improved Brennstoffabdampfung takes place and thus there is a lower pollutant emissions in the starting phase or when igniting , If ignition then takes place, then the heat of combustion, as already mentioned above, rapidly heats up the various system areas, so that, for example, the Peltier elements 54 can be switched over or controlled differently in order to achieve the above-mentioned cooling effect ,
  • the arrangement according to the invention When using the arrangement according to the invention with a comparatively poorly evaporating fuel, for example diesel fuel, it is basically possible to operate the Peltier elements 54 as heating elements during normal combustion, so that heat is not extracted in the region of the combustion chamber housing 18, but is supplied , This results in a very simple construction of the advantage that the evaporator burner 12 according to the invention can be used for a variety of different fuel types, without having to make special structural adaptation measures.
  • the consideration of the type of fuel can be done by the adapted thereto manner of controlling the tempering 52.

Landscapes

  • 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 (7)

  1. Un brûleur d'évaporation, comprenant:
    - un boîtier de chambre de combustion (18) avec une paroi de transfert de chaleur (22),
    - un médium d'évaporation (46) pour insérer du combustible dans la chambre de combustion (18), le médium d'évaporation (46) étant prévu à un côté de la paroi de transfert de chaleur (22) faisant face à la chambre de combustion (18)
    - un dispositif de chauffage d'allumage (50) pour allumer un mélange de vapeur de combustible/air dans la chambre de combustion (38),
    - un dispositif de contrôle de température (52) avec au moins un élément de contrôle de température (54) pour influencer thermiquement le combustible à insérer dans la chambre de combustion (38) ou/et le médium d'évaporation (46) ou/et l'air à insérer dans la chambre de combustion (18), ledit au moins un élément de contrôle de température (54) étant prévu dans la région où le médium d'évaporation (46) est prévu, à un côté de la paroi de transfert de chaleur (22) opposé à la chambre de combustion (38),
    caractérisé par ledit au moins un élément de contrôle de température (54) comprenant un élément Peltier.
  2. Le brûleur d'évaporation selon la revendication 1,
    caractérisé par ledit au moins un élément de contrôle de température (54) comprenant à son côté opposé à la paroi de transfert de chaleur (22) une formation de surfaces de transfert de chaleur (56).
  3. Le brûleur d'évaporation selon la revendication 2,
    caractérisé par la formation de surfaces de transfert de chaleur (56) étant formée sous forme de nervures.
  4. Le brûleur d'évaporation selon une des revendications 1 à 3, caractérisé par ledit au moins un élément de contrôle de température (54) pouvant être amené en interaction de transfert de chaleur avec de l'air à insérer dans la chambre de combustion (38) à un côté opposé à la paroi de transfert de chaleur (22).
  5. Le brûleur d'évaporation selon la revendication 4,
    caractérisé par ledit au moins un élément de contrôle de température (54) s'étendant dans un espace de guidage d'air (36) avec son côté opposé à la paroi de transfert de chaleur (22) ou/et avec sa formation de surfaces de transfert de chaleur (56).
  6. Le brûleur d'évaporation selon une des revendications 1 à 5,
    caractérisé par le boîtier de chambre de combustion (18) étant adapté sous forme de pot avec une paroi circonférentielle (20) et une paroi de fond (22) et par la paroi de fond (22) formant au moins une partie de la paroi de transfert de chaleur (22).
  7. Une méthode pour opérer un brûleur d'évaporation selon une des revendications 1 à 6,
    caractérisé en ce que avant ou/et durant une phase d'allumage/de démarrage du brûleur d'évaporation (12) au moins un élément Peltier (54) est opéré de manière que le combustible à insérer dans la chambre de combustion (38) ou/et le médium d'évaporation (46) soient chauffés et en ce que durant ou/et après l'allumage au moins un élément Peltier (54) est opéré de manière que le combustible (38) à insérer dans la chambre de combustion ou/et le médium d'évaporation (46) soient réfrigérés.
EP04012271.5A 2003-10-07 2004-05-24 Brûleur à vaporisation Expired - Fee Related EP1522788B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10346558 2003-10-07
DE10346558A DE10346558B3 (de) 2003-10-07 2003-10-07 Verdampferbrenner

Publications (3)

Publication Number Publication Date
EP1522788A2 EP1522788A2 (fr) 2005-04-13
EP1522788A3 EP1522788A3 (fr) 2008-11-12
EP1522788B1 true EP1522788B1 (fr) 2014-05-07

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EP04012271.5A Expired - Fee Related EP1522788B1 (fr) 2003-10-07 2004-05-24 Brûleur à vaporisation

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EP (1) EP1522788B1 (fr)
DE (1) DE10346558B3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006012925A1 (de) * 2006-03-21 2007-09-27 J. Eberspächer GmbH & Co. KG Fahrzeugheizgerät
DE102007021937B4 (de) * 2007-05-10 2014-03-27 Eberspächer Climate Control Systems GmbH & Co. KG Verdampferbaugruppe, insbesondere für einen Verdampferbrenner eines Fahrzeugheizgerätes
DE102007029202A1 (de) * 2007-06-25 2009-01-08 J. Eberspächer GmbH & Co. KG Verdampferbaugruppe, insbesondere für ein Fahrzeugheizgerät
DE102007038705A1 (de) * 2007-08-16 2009-02-19 J. Eberspächer GmbH & Co. KG Verfahren zum Betreiben eines brennstoffbetriebenen Heizgeräts, insbesondere Fahrzeugheizgerät
DE102008006112A1 (de) * 2008-01-25 2009-07-30 BSH Bosch und Siemens Hausgeräte GmbH Heizeinrichtung für ein Hausgerät zur Pflege von Wäschestücken und Verfahren zum Betreiben einer derartigen Heizeinrichtung
DE102011077891B3 (de) * 2011-06-21 2012-12-06 J. Eberspächer GmbH & Co. KG Verdampferbaugruppe, insbesondere für ein Fahrzeugheizgerät
DE102011052324A1 (de) * 2011-08-01 2013-02-07 Webasto Ag Fahrzeugheizgerät zum Betrieb mit mehreren Brennstoffarten
DE102011052332A1 (de) * 2011-08-01 2013-02-07 Webasto Ag Verfahren zum Betreiben eines mobilen Heizgeräts
DE102016117408B4 (de) 2016-09-15 2020-11-26 Eberspächer Climate Control Systems GmbH Brennkammerbaugruppe für ein brennstoffbetriebenes Fahrzeugheizgerät
DE102016015762B4 (de) 2016-09-15 2020-07-30 Eberspächer Climate Control Systems GmbH & Co. KG Brennkammerbaugruppe für ein brennstoffbetriebenes Fahrzeugheizgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879837A (en) * 1958-01-28 1959-03-31 Edgar S Downs Liquid fuel burning heater
DE3538201A1 (de) * 1985-02-08 1986-08-14 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Verdampfungsbrenner fuer ein mit fluessigem brennstoff betriebenes heizgeraet
DE19848149A1 (de) * 1998-10-20 2000-05-04 Webasto Thermosysteme Gmbh Brenner eines Fahrzeugheizgeräts und Verfahren zum Betreiben eines solchen Brenners

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3526866A1 (de) * 1985-07-26 1987-02-05 Kernforschungsanlage Juelich Verdampfer fuer fluessigen brennstoff zur erzeugung eines brennstoff-luft-gemisches
DE4210699A1 (de) * 1992-04-01 1993-10-07 U T S Uhrentechnik Schwarzwald Löt- oder Schweißvorrichtung
DE19900295A1 (de) * 1999-01-07 2000-07-13 Irt Innovative Recycling Techn Verbrennungssteuerung von Gasturbinen zur Schwingungsreduktion durch Brennstoffdotierung im Reaktor
DE10130638A1 (de) * 2001-06-26 2003-01-02 Eberspaecher J Gmbh & Co Verdampferbrenner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879837A (en) * 1958-01-28 1959-03-31 Edgar S Downs Liquid fuel burning heater
DE3538201A1 (de) * 1985-02-08 1986-08-14 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Verdampfungsbrenner fuer ein mit fluessigem brennstoff betriebenes heizgeraet
DE19848149A1 (de) * 1998-10-20 2000-05-04 Webasto Thermosysteme Gmbh Brenner eines Fahrzeugheizgeräts und Verfahren zum Betreiben eines solchen Brenners

Also Published As

Publication number Publication date
DE10346558B3 (de) 2005-03-17
EP1522788A2 (fr) 2005-04-13
EP1522788A3 (fr) 2008-11-12

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