EP2705299B1 - Evaporator burner for a mobile heating unit - Google Patents

Evaporator burner for a mobile heating unit Download PDF

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Publication number
EP2705299B1
EP2705299B1 EP12718585.8A EP12718585A EP2705299B1 EP 2705299 B1 EP2705299 B1 EP 2705299B1 EP 12718585 A EP12718585 A EP 12718585A EP 2705299 B1 EP2705299 B1 EP 2705299B1
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EP
European Patent Office
Prior art keywords
evaporator
burner
combustion
fuel
heat exchanger
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EP12718585.8A
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German (de)
French (fr)
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EP2705299A1 (en
Inventor
Steffen Weber
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Webasto SE
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Webasto SE
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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
    • F23D3/02—Wick burners
    • F23D3/18—Details of wick burners
    • F23D3/22—Devices for mixing evaporated fuel with air
    • 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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • F23C7/06—Disposition of air supply not passing through burner for heating the incoming air
    • 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
    • F23D11/44—Preheating devices; Vaporising devices
    • 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
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/443—Vaporising devices incorporated with burners heated by the main burner flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • 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
    • F23D2900/00016—Preventing or reducing deposit build-up on burner parts, e.g. from carbon
    • 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
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21002—Burners specially adapted for a particular use for use in car heating systems

Definitions

  • the present invention relates to an evaporator burner for a mobile heater.
  • Mobile heaters are known, e.g. can be used as vehicle heaters for heating a vehicle.
  • vehicle heaters are e.g. as a heater, which can provide additional heat while the drive motor of the vehicle, or as a heater, which can provide both heating and stationary drive motor heat for heating purposes, used.
  • a “mobile heater” is understood in this context to mean a heater which is designed for use in mobile applications and adapted accordingly. This means in particular that it is transportable (possibly permanently installed in a vehicle or housed only for transport therein) and not exclusively for a permanent, stationary use, as is the case for example when heating a building, is designed.
  • the mobile heater can also be permanently installed in a vehicle (land vehicle, ship, etc.), in particular in a land vehicle.
  • it may be designed to heat a vehicle interior, such as a land vehicle, watercraft or aircraft, as well as a partially open space, as found, for example, on ships, in particular yachts.
  • the mobile heater can also be used temporarily stationary, such as in large tents, containers (for example, construction containers), etc.
  • the mobile heater as a stationary or auxiliary heater for a land vehicle, such as for a caravan, a Motorhome, a bus, a car, etc., designed.
  • liquid fuel which may correspond to the fuel, for example, which is also used for an internal combustion engine of the vehicle, such as gasoline, diesel or ethanol, fed via a fuel tube to an evaporator body, which consists of a porous, absorbent material.
  • the fuel is evaporated.
  • the fuel is mixed with also supplied combustion air and reacted in an exothermic reaction with the release of heat.
  • the evaporator burners are usually not operated continuously, but depending on the Schutuls 130 relatively often on and off again. When switching off is usually first by turning off a Fuel supply pump stopped the fuel supply and initially continue to supply combustion air to allow a residue-free, clean burnout as possible.
  • a standing fuel column is already present in the fuel tube during the burnout, in which there is still a high temperature in a combustion chamber of the burner. If there is a relatively good thermal connection between the combustion chamber and the fuel tube, a high level of heat can be applied to a stationary fuel column in the fuel tube, in particular in the period immediately after the interruption of the fuel supply. As a result, for example, polymerization of fuel constituents in the fuel tube may occur, which may result in deposits in the fuel tube that are not soluble in the unaltered fuel. These deposits can lead to an increase in the flow resistance in the combustion tube and ultimately to a clogging of the fuel supply.
  • DE 197 17 544 A1 describes an evaporator burner with a combustion chamber, with a peripheral boundary wall, a front boundary wall, a coaxial projecting into the combustion air supply nozzle having radial air outlets through the nozzle wall and an air guide for a swirl flow air supply upstream, a side ignition and a fuel supply.
  • the louver, the air supply nozzle and the end boundary wall are formed as a one-piece precision casting component.
  • DE 39 14 611 A1 describes an evaporative burner for a liquid fuel operated heater.
  • a separate support member for an ignition device releasably connected to a carrier for the absorbent body to form a Zündkarnmer.
  • the absorbent body is supplied with liquid fuel via a fuel supply line which is performed by the support member for the igniter and fixed to the absorbent body.
  • WO 2010/083796 A2 describes an evaporator burner for a mobile heater, comprising an evaporator for the evaporation of supplied liquid fuel and arranged in the axial direction of the evaporator combustion chamber for the combustion of vaporized fuel and supplied combustion air.
  • the evaporator has a flow-through, interspersed with a plurality of cavities structure.
  • the evaporator has a combustion air supply passage extending through the evaporator. combustion air is supplied through the combustion air supply passage through the evaporator into the combustion chamber.
  • the burner cover can be kept efficiently via the air heat exchanger by heat transfer to the supplied combustion air at a relatively low temperature level. Since the burner cap is used as a heat sink for the fuel tube, can be dispensed with an additional, designed as a separate component heat sink for the fuel tube, which allows a cost-effective and compact design. Since an undesirably high temperature rise in the region of the combustion tube can be prevented, the risk of blockages in the fuel tube is reduced.
  • the air heat exchanger may e.g. be formed as a separate component or be formed integrally with the burner cover made of the material of the burner cap.
  • the burner cap is connected to the combustion chamber only via a substantially linear contact point.
  • the heat conduction from the combustion chamber to the burner cover is suppressed, since the linear contact point makes possible at most a weak heat conduction in the direction of the burner cover.
  • the combustion lid can thus be reliably maintained at a relatively low temperature level and forms a reliable heat sink for the fuel tube.
  • the air heat exchanger has a plurality of heat exchanger fins. Therefore, a good heat transfer to the supplied combustion air is achieved by a large surface area, so that heat can be efficiently removed from the burner cover.
  • the heat exchanger fins may have various shapes.
  • the air heat exchanger is arranged in the combustion air supply upstream of the combustion chamber.
  • the air heat exchanger can be arranged immediately upstream of the combustion chamber in order to achieve a particularly compact construction.
  • the combustion air can be preheated by the heat transfer before entering the combustion chamber.
  • the burner cap is made of aluminum or an aluminum alloy. Compared to a configuration in which the burner cap is e.g. is made of stainless steel, in this embodiment, due to the high thermal conductivity of aluminum or aluminum alloys efficient heat distribution and dissipation in the burner cover is provided so that the dissipated heat is dissipated efficiently to the air heat exchanger.
  • the burner cover and the evaporator receptacle are designed as separate components.
  • an undesirably high heat input from the evaporator receptacle can be reliably prevented in the burner cap, so that the burner cap can be kept as a heat sink at a low temperature.
  • the burner cover and the evaporator receptacle are arranged spatially spaced from each other, an undesirable heat input from the Verdampferaufnahrne is prevented in the burner cover particularly reliable.
  • the combustion chamber has a plurality of holes for supplying combustion air into the combustion chamber.
  • FIGS Fig. 1 In the following, an embodiment will be described with reference to FIGS Fig. 1 described.
  • Fig. 1 is schematically shown a portion of an evaporator receptacle 2 and a burner cap 8 of an evaporator burner 1 for a mobile heater.
  • Fig. 1 In the presentation of Fig. 1 is a schematic sectional view in a plane containing a main axis Z of the evaporator burner 1 is shown.
  • the evaporator burner 1 may, for example, essentially have a rotational symmetry with respect to the main axis Z.
  • the evaporator burner 1 may be formed, for example, for a vehicle heater, in particular a heater or a heater.
  • the evaporator burner 1 is in particular designed to convert a mixture of vaporized fuel and combustion air with the release of heat in a combustion chamber 4.
  • the released heat is in a (not shown) heat exchanger on a medium to be heated, which may be formed, for example, by air or a cooling liquid transferred.
  • the heat exchanger, the discharge for the hot combustion gases, the likewise provided combustion air delivery device (eg a fan), the fuel delivery device (eg a metering pump), the control unit for controlling the evaporator burner 1, etc. are not shown.
  • the evaporator burner 1 has an evaporator receptacle 2, in which a porous, absorbent evaporator body 5 is arranged.
  • the evaporator receptacle 2 has a substantially pot-shaped form with a hole in the bottom.
  • the vaporizer body 5 is received in the pot-like recess of the evaporator receptacle 2 and in particular can be held firmly therein, e.g. by welding, soldering, jamming or with the aid of a suitable fuse element.
  • the vaporizer body 5 may e.g. in particular be formed by a metal fiber fleece or a plurality of layers of metal fiber fleece.
  • a fuel pipe 6 for supplying fuel to the evaporator body 5.
  • the fuel pipe 6 opens into the evaporator receptacle 2 and communicates with a (not shown) fuel delivery device, via which fuel can be conveyed through the fuel pipe 6 in a predetermined amount, as shown schematically by an arrow B.
  • the fuel tube 6 is, e.g. by welding or soldering firmly connected to the evaporator receptacle 2.
  • the combustion chamber 4 is peripherally limited by a combustion chamber 7, which may be formed for example by a substantially cylindrical member made of a temperature-resistant steel.
  • the combustion chamber 7 is provided with a plurality of holes 7a through which combustion air can be supplied into the combustion chamber 4, as in FIG Fig. 1 schematically represented by branched arrows L.
  • the burner cap 8 is made of aluminum or an aluminum alloy and may be produced, for example, in a casting process.
  • the burner cover 8 also has a substantially pot-like shape and is arranged such that a circumferential side wall surrounds the evaporator receptacle 2.
  • the burner cover 8 and the evaporator receptacle 2 are formed as separate components, which are arranged spatially spaced from each other.
  • a passage opening is provided, through which the fuel tube 6 passes.
  • the combustion chamber 7 is firmly connected to the burner cover 8, so that the combustion chamber 4 is closed at the back is.
  • the combustion chamber 7 is connected to the burner cover 8 only via a substantially linear contact point.
  • the circumferential side wall of the burner cap 8 has a circumferential, narrow, projecting rib 8a, on which the combustion chamber 7 is attached substantially linearly.
  • the combustion chamber 7 may be connected to the projecting rib 8a, for example, by welding, soldering or caulking.
  • the fuel tube 6 is thermally coupled to the burner cover 8, so that heat transfer from the fuel tube 6 to the burner cover 8 can take place.
  • the fuel tube 6 has a circumferential projection 6a, via which the fuel tube 6 is thermally conductively connected to the burner cover 8.
  • the compound can e.g. be realized by soldering or welding.
  • the fuel tube 6 may be connected in a thermally conductive manner with the burner cover 8 in another way. It can e.g. between the fuel tube 6 and the burner cap 8 also a thermally conductive element, such as e.g. a nickelleitpad be provided for heat transfer.
  • the burner cap 8 is provided with an air heat exchanger 8b for cooling or dissipating heat from the burner cap 8.
  • the air heat exchanger 8 b has a plurality of heat exchanger fins (preferably a plurality of heat exchanger fins) which are distributed over the outer circumference of the burner cover 8.
  • the heat exchanger ribs protrude into the combustion air flow in a combustion air supply upstream of the combustion chamber 4.
  • the heat exchanger ribs are flowed around in operation by the supplied combustion air, as in Fig. 1 is shown schematically by arrows L, so that combustion air is passed through the air heat exchanger 8b and this way the burner cover 8 is cooled.
  • the air heat exchanger 8b may for example be formed integrally with the burner cover 8 of the material of the burner cover 8 or be coupled as a separate component thermally conductive to the burner cover 8.
  • the air heat exchanger 8b may be formed by formed on the outer wall of the burner cover 8 heat exchanger fins.
  • the fuel pipe 6 is thermally connected to the burner cover 8 by the described design, so that the burner cover 8 serves as a heat sink for the fuel pipe 6.
  • the burner cap 8 Due to the configuration of aluminum or an aluminum alloy, the burner cap 8 has a high thermal conductivity and the heat is efficiently conducted to the air heat exchanger 8b, where it is discharged to the supplied combustion air. Furthermore, the temperature of the burner cover 8 is kept as low as possible in operation, that a thermal insulation of the burner cap 8 is provided by hot components. This is e.g. achieved in that the combustion chamber 7 is connected only via a substantially linear contact point with the burner cover 8 and not on a flat support.
  • the burner cover 8 effectively serves as a heat sink for the fuel pipe 6 in the manner described, sticking or clogging of fuel in the fuel pipe 6 can be reliably prevented by undesirably high heat without providing a separate heat sink as a separate, further component will need.
  • the combustion chamber 4 in a known manner by a heat exchanger for transmitting the heat released to a medium to be heated, such as air or a liquid surrounded. Furthermore, a housing is provided in a conventional manner, in which the evaporator burner is received and which provides an adequate air flow for the combustion air supply.

Description

Die vorliegende Erfindung betrifft einen Verdampferbrenner für ein mobiles Heizgerät.The present invention relates to an evaporator burner for a mobile heater.

Es sind mobile Heizgeräte bekannt, die z.B. als Fahrzeugheizgeräte zum Beheizen eines Fahrzeugs zum Einsatz kommen können. Bei Anwendungen in einem Fahrzeug werden derartige mobile Heizgeräte z.B. als Zuheizer, die bei laufendem Antriebsmotor des Fahrzeugs zusätzlich Wärme bereitstellen können, oder als Standheizer, die sowohl bei laufendem als auch bei ruhendem Antriebsmotor Wärme zu Heizzwecken bereitstellen können, eingesetzt.Mobile heaters are known, e.g. can be used as vehicle heaters for heating a vehicle. For applications in a vehicle such mobile heaters are e.g. as a heater, which can provide additional heat while the drive motor of the vehicle, or as a heater, which can provide both heating and stationary drive motor heat for heating purposes, used.

Unter einem "mobilen Heizgerät" wird in diesem Zusammenhang ein Heizgerät verstanden, das für den Einsatz in mobilen Anwendungen ausgelegt und dementsprechend angepasst ist. Dies bedeutet insbesondere, dass es transportabel ist (ggf. in einem Fahrzeug fest eingebaut oder lediglich für den Transport darin untergebracht) und nicht ausschließlich für einen dauerhaften, stationären Einsatz, wie es beispielsweise bei der Beheizung eines Gebäudes der Fall ist, ausgelegt ist. Dabei kann das mobile Heizgerät auch fest in einem Fahrzeug (Landfahrzeug, Schiff, etc.), insbesondere in einem Landfahrzeug, installiert sein. Insbesondere kann es zur Beheizung eines Fahrzeug-Innenraums, wie beispielsweise eines Land-, Wasser- oder Luftfahrzeugs, sowie eines teiloffenen Raumes, wie er beispielsweise auf Schiffen, insbesondere Yachten, aufzufinden ist, ausgelegt sein. Das mobile Heizgerät kann auch vorübergehend stationär eingesetzt werden, wie beispielsweise in großen Zelten, Containern (zum Beispiel Baucontainern), etc.. Gemäß einer vorteilhaften Weiterbildung ist das mobile Heizgerät als Stand- oder Zuheizer für ein Landfahrzeug, wie beispielsweise für einen Wohnwagen, ein Wohnmobil, einen Bus, einen Pkw, etc., ausgelegt.A "mobile heater" is understood in this context to mean a heater which is designed for use in mobile applications and adapted accordingly. This means in particular that it is transportable (possibly permanently installed in a vehicle or housed only for transport therein) and not exclusively for a permanent, stationary use, as is the case for example when heating a building, is designed. In this case, the mobile heater can also be permanently installed in a vehicle (land vehicle, ship, etc.), in particular in a land vehicle. In particular, it may be designed to heat a vehicle interior, such as a land vehicle, watercraft or aircraft, as well as a partially open space, as found, for example, on ships, in particular yachts. The mobile heater can also be used temporarily stationary, such as in large tents, containers (for example, construction containers), etc. According to an advantageous embodiment, the mobile heater as a stationary or auxiliary heater for a land vehicle, such as for a caravan, a Motorhome, a bus, a car, etc., designed.

Bei mobilen Heizgeräten, die einen Verdampferbrenner aufweisen, wird oftmals flüssiger Brennstoff, der z.B. dem Kraftstoff entsprechen kann, der auch für einen Verbrennungsmotor des Fahrzeugs zum Einsatz kommt, wie z.B. Benzin, Diesel oder Ethanol, über ein Brennstoffrohr einem Verdampferkörper zugeführt, der aus einem porösen, saugfähigen Material besteht. An dem Verdampferkörper wird der Brennstoff verdampft. Der Brennstoff wird mit ebenfalls zugeführter Brennluft durchmischt und in einer exothermen Reaktion unter Freisetzung von Wärme umgesetzt. Die Verdampferbrenner werden dabei üblicherweise nicht kontinuierlich betrieben, sondern je nach Heizleistungsbedarf relativ häufig an- und wieder ausgeschaltet. Bei einem Ausschalten wird dabei üblicherweise zuerst durch Ausschalten einer Brennstoffförderpumpe die Brennstoffzufuhr beendet und zunächst weiterhin Brennluft zugeführt, um ein möglichst rückstandsfreies, sauberes Ausbrennen zu ermöglichen. Dadurch ist bereits während des Ausbrennens, bei dem in einem Brennraum des Brenners noch eine hohe Temperatur vorliegt, eine stehende Brennstoffsäule in dem Brennstoffrohr vorhanden. Wenn eine relativ gute thermische Verbindung zwischen dem Brennraum und dem Brennstoffrohr besteht, kann insbesondere in dem Zeitraum unmittelbar nach dem Unterbrechen der Brennstoffzufuhr eine hohe Wärmeeinwirkung auf eine stehende Brennstoffsäule in dem Brennstoffrohr erfolgen. Infolgedessen kann z.B. eine Polymerisation von Brennstoffbestandteilen in dem Brennstoffrohr erfolgen, die zu Ablagerungen in dem Brennstoffrohr führen kann, die in dem unveränderten Brennstoff nicht löslich sind. Diese Ablagerungen können zu einem Anstieg des Strömungswiderstands in dem Brennrohr und schließlich zu einem Verstopfen der Brennstoffzuführung führen.In mobile heaters having an evaporator burner, liquid fuel, which may correspond to the fuel, for example, which is also used for an internal combustion engine of the vehicle, such as gasoline, diesel or ethanol, fed via a fuel tube to an evaporator body, which consists of a porous, absorbent material. At the evaporator body, the fuel is evaporated. The fuel is mixed with also supplied combustion air and reacted in an exothermic reaction with the release of heat. The evaporator burners are usually not operated continuously, but depending on the Heizleistungsbedarf relatively often on and off again. When switching off is usually first by turning off a Fuel supply pump stopped the fuel supply and initially continue to supply combustion air to allow a residue-free, clean burnout as possible. As a result, a standing fuel column is already present in the fuel tube during the burnout, in which there is still a high temperature in a combustion chamber of the burner. If there is a relatively good thermal connection between the combustion chamber and the fuel tube, a high level of heat can be applied to a stationary fuel column in the fuel tube, in particular in the period immediately after the interruption of the fuel supply. As a result, for example, polymerization of fuel constituents in the fuel tube may occur, which may result in deposits in the fuel tube that are not soluble in the unaltered fuel. These deposits can lead to an increase in the flow resistance in the combustion tube and ultimately to a clogging of the fuel supply.

DE 197 17 544 A1 beschreibt einen Verdampferbrenner mit einer Brennkammer, mit einer Umfangs-Begrenzungswand, einer Stirn-Begrenzungswand, einem koaxial in die Brennkammer hineinragenden Luftzuführungsstutzen, der radiale Luftaustritte durch die Stutzenwand aufweist und dem eine Luftleiteinrichtung für eine Drallstrom-Luftzufuhr vorgelagert ist, einer seitlichen Zündeinrichtung und einer Brennstoffzuführung. Die Luftleiteinrichtung, der Luftzuführungsstutzen und die Stirn-Begrenzungswand sind als einstückiges Feinguss-Bauteil ausgebildet. DE 197 17 544 A1 describes an evaporator burner with a combustion chamber, with a peripheral boundary wall, a front boundary wall, a coaxial projecting into the combustion air supply nozzle having radial air outlets through the nozzle wall and an air guide for a swirl flow air supply upstream, a side ignition and a fuel supply. The louver, the air supply nozzle and the end boundary wall are formed as a one-piece precision casting component.

DE 39 14 611 A1 beschreibt einen Verdampfungsbrenner für ein mit flüssigem Brennstoff betriebenes Heizgerät. Es ist ein gesondertes Trägerbauteil für eine Zündeinrichtung vorgesehen, das lösbar mit einem Träger für den saugfähigen Körper unter Bildung einer Zündkarnmer verbunden. Dem saugfähigen Körper wird flüssiger Brennstoff über eine Brennstoffzufuhrleitung zugeführt, die durch das Trägerbauteil für die Zündeinrichtung durchgeführt und an dem Träger für den saugfähigen Körper befestigt ist. DE 39 14 611 A1 describes an evaporative burner for a liquid fuel operated heater. There is provided a separate support member for an ignition device releasably connected to a carrier for the absorbent body to form a Zündkarnmer. The absorbent body is supplied with liquid fuel via a fuel supply line which is performed by the support member for the igniter and fixed to the absorbent body.

WO 2010/083796 A2 beschreibt einen Verdampferbrenner für ein mobiles Heizgerät, der einen Verdampfer zur Verdampfung von zugeführtem flüssigem Brennstoff und eine in axialer Richtung zu dem Verdampfer angeordnete Brennkammer zur Verbrennung von verdampftem Brennstoff und zugeführter Brennluft aufweist. Der Verdampfer weist eine durchströmbare, mit einer Vielzahl von Hohlräumen durchsetzte Struktur auf. Der Verdampfer weist einen Brennluft-Zufuhrkanal auf, der sich durch den Verdampfer erstreckt. Brennluft wird über den Brennluft-Zufuhrkanal durch den Verdampfer hindurch in die Brennkammer zugeführt. WO 2010/083796 A2 describes an evaporator burner for a mobile heater, comprising an evaporator for the evaporation of supplied liquid fuel and arranged in the axial direction of the evaporator combustion chamber for the combustion of vaporized fuel and supplied combustion air. The evaporator has a flow-through, interspersed with a plurality of cavities structure. The evaporator has a combustion air supply passage extending through the evaporator. combustion air is supplied through the combustion air supply passage through the evaporator into the combustion chamber.

Es ist Aufgabe der vorliegenden Erfindung, einen verbesserten Verdampferbrenner für ein mobiles Heizgerät bereitzustellen, bei dem insbesondere die Gefahr von Verstopfungen in dem Brennstoffrohr vermindert ist.It is an object of the present invention to provide an improved evaporator burner for a mobile heater, in particular, the risk of blockages in the fuel pipe is reduced.

Die Aufgabe wird durch einen Verdampferbrenner für ein mobiles Heizgerät nach Anspruch 1 gelöst. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.The object is achieved by an evaporator burner for a mobile heater according to claim 1. Advantageous developments are specified in the dependent claims.

Durch die thermische Ankopplung des Brennstoffrohres an den Brennerdeckel kann eine effiziente Wärmeabfuhr von dem Brennstoffrohr zu dem Brennerdeckel erfolgen, also das Brennstoffrohr gekühlt werden. Dabei kann der Brennerdeckel über den Luftwärmetauscher effizient durch Wärmeübertragung auf die zugeführte Brennluft auf einem relativ niedrigen Temperaturniveau gehalten werden. Da der Brennerdeckel als Wärmesenke für das Brennstoffrohr genutzt wird, kann auf eine zusätzliche, als separates Bauteil ausgebildete Wärmesenke für das Brennstoffrohr verzichtet werden, was eine kostengünstige und kompakte Gestaltung ermöglicht. Da ein unerwünscht hoher Temperaturanstieg im Bereich des Brennrohres verhindert werden kann, ist die Gefahr von Verstopfungen in dem Brennstoffrohr vermindert. Der Luftwärmetauscher kann z.B. als separates Bauteil ausgebildet sein oder aber einstückig mit dem Brennerdeckel aus dem Material des Brennerdeckels gebildet sein.As a result of the thermal coupling of the fuel tube to the burner cover, efficient heat removal from the fuel tube to the burner cover can take place, ie the fuel tube can be cooled. In this case, the burner cover can be kept efficiently via the air heat exchanger by heat transfer to the supplied combustion air at a relatively low temperature level. Since the burner cap is used as a heat sink for the fuel tube, can be dispensed with an additional, designed as a separate component heat sink for the fuel tube, which allows a cost-effective and compact design. Since an undesirably high temperature rise in the region of the combustion tube can be prevented, the risk of blockages in the fuel tube is reduced. The air heat exchanger may e.g. be formed as a separate component or be formed integrally with the burner cover made of the material of the burner cap.

Gemäß einer Ausgestaltung ist der Brennerdeckel mit der Brennkammer nur über eine im Wesentlichen linienförmige Kontaktstelle verbunden. In diesem Fall ist die Wärmeleitung von der Brennkammer zu dem Brennerdeckel unterdrückt, da die linienförmige Kontaktstelle allenfalls eine schwache Wärmeleitung in Richtung zu dem Brennerdeckel ermöglicht. Der Brenndeckel kann somit zuverlässig auf einem relativ niedrigen Temperaturniveau gehalten werden und bildet eine zuverlässige Wärmesenke für das Brennstoffrohr. Es ist z.B. aber auch möglich, den Brennerdeckel in anderer Weise thermisch von der Brennkammer und anderen heißen Bauteilen isoliert auszugestalten.According to one embodiment, the burner cap is connected to the combustion chamber only via a substantially linear contact point. In this case, the heat conduction from the combustion chamber to the burner cover is suppressed, since the linear contact point makes possible at most a weak heat conduction in the direction of the burner cover. The combustion lid can thus be reliably maintained at a relatively low temperature level and forms a reliable heat sink for the fuel tube. But it is also possible, for example, to design the burner cover thermally insulated from the combustion chamber and other hot components in another way.

Der Luftwärmetauscher weist eine Mehrzahl von Wärmetauscherrippen auf. Daher wird durch eine große Oberfläche eine gute Wärmeübertragung auf die zugeführte Brennluft erzielt, sodass effizient Wärme von dem Brennerdeckel abgeführt werden kann. Die Wärmetauscherrippen können verschiedene Formen aufweisen.The air heat exchanger has a plurality of heat exchanger fins. Therefore, a good heat transfer to the supplied combustion air is achieved by a large surface area, so that heat can be efficiently removed from the burner cover. The heat exchanger fins may have various shapes.

Gemäß einer Ausgestaltung ist der Luftwärmetauscher in der Brennluftzuführung stromaufwärts des Brennraums angeordnet. Insbesondere kann der Luftwärmetauscher unmittelbar stromaufwärts des Brennraums angeordnet sein, um einen besonders kompakten Aufbau zu erzielen. Durch die Anordnung stromaufwärts des Brennraums kann die Brennluft vor dem Eintritt in den Brennraum durch die Wärmeübertragung vorgewärmt werden.According to one embodiment, the air heat exchanger is arranged in the combustion air supply upstream of the combustion chamber. In particular, the air heat exchanger can be arranged immediately upstream of the combustion chamber in order to achieve a particularly compact construction. By the arrangement upstream of the combustion chamber, the combustion air can be preheated by the heat transfer before entering the combustion chamber.

Gemäß einer Ausgestaltung ist der Brennerdeckel aus Aluminium oder einer Aluminiumlegierung gefertigt. Im Vergleich zu einer Ausgestaltung, bei der der Brennerdeckel z.B. aus Edelstahl gefertigt ist, wird bei dieser Ausgestaltung aufgrund der hohen Wärmeleitfähigkeit von Aluminium oder Aluminiumlegierungen eine effiziente Wärmeverteilung und -ableitung in dem Brennerdeckel bereitgestellt, sodass die abzuführende Wärme effizient zu dem Luftwärmetauscher abgeführt wird.According to one embodiment, the burner cap is made of aluminum or an aluminum alloy. Compared to a configuration in which the burner cap is e.g. is made of stainless steel, in this embodiment, due to the high thermal conductivity of aluminum or aluminum alloys efficient heat distribution and dissipation in the burner cover is provided so that the dissipated heat is dissipated efficiently to the air heat exchanger.

Der Brennerdeckel und die Verdampferaufnahme sind als separate Bauteile ausgebildet. Somit kann zuverlässig auch ein unerwünscht hoher Wärmeeintrag aus der Verdampferaufnahme in den Brennerdeckel verhindert werden, sodass der Brennerdeckel als Wärmesenke auf einer niedrigen Temperatur gehalten werden kann. Da der Brennerdeckel und die Verdampferaufnahme räumlich voneinander beabstandet angeordnet sind, wird ein unerwünschter Wärmeeintrag von der Verdampferaufnahrne in den Brennerdeckel besonders zuverlässig verhindert.The burner cover and the evaporator receptacle are designed as separate components. Thus, an undesirably high heat input from the evaporator receptacle can be reliably prevented in the burner cap, so that the burner cap can be kept as a heat sink at a low temperature. Since the burner cover and the evaporator receptacle are arranged spatially spaced from each other, an undesirable heat input from the Verdampferaufnahrne is prevented in the burner cover particularly reliable.

Gemäß einer Ausgestaltung weist die Brennkammer eine Mehrzahl von Löchern zur Zuführung von Brennluft in den Brennraum auf.According to one embodiment, the combustion chamber has a plurality of holes for supplying combustion air into the combustion chamber.

Weitere Vorteile und Ausgestaltungen ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die Figur.

Fig. 1
ist eine schematische Darstellung eines Verdampferbrenners für ein mobiles Heizgerät im Bereich einer Verdampferaufnahme und eines Brennerdeckels.
Further advantages and embodiments will become apparent from the following description of an embodiment with reference to the figure.
Fig. 1
is a schematic representation of an evaporator burner for a mobile heater in the range of an evaporator receptacle and a burner cap.

Im Folgenden wird eine Ausführungsform unter Bezug auf die Fig. 1 beschrieben. In Fig. 1 ist schematisch ein Bereich einer Verdampferaufnahme 2 und eines Brennerdeckels 8 eines Verdampferbrenners 1 für ein mobiles Heizgerät dargestellt. Bei der Darstellung von Fig. 1 ist eine schematische Schnittdarstellung in einer Ebene dargestellt, die eine Hauptachse Z des Verdampferbrenners 1 enthält. Der Verdampferbrenner 1 kann z.B. im Wesentlichen eine Rotationssymmetrie bezüglich der Hauptachse Z aufweisen. Der Verdampferbrenner 1 kann z.B. für ein Fahrzeugheizgerät, insbesondere eine Zuheizung oder eine Standheizung ausgebildet sein. Der Verdampferbrenner 1 ist dabei insbesondere dazu ausgebildet, in einem Brennraum 4 eine Mischung von verdampftem Brennstoff und Brennluft unter Freisetzung von Wärme umzusetzen. Die freigesetzte Wärme wird in einem (nicht dargestellten) Wärmetauscher auf ein zu erwärmendes Medium, das z.B. durch Luft oder eine Kühlflüssigkeit gebildet sein kann, übertragen. In der schematischen Darstellung von Fig. 1 sind insbesondere der Wärmetauscher, die Ableitung für die heißen Verbrennungsabgase, die ebenfalls vorgesehene Brennluftfördervorrichtung (z.B. ein Gebläse), die Brennstofffördenvorrichtung (z.B. eine Dosierpumpe), die Steuereinheit zur Ansteuerung des Verdampferbrenners 1, etc. nicht dargestellt. Diese Komponenten sind wohlbekannt und im Stand der Technik ausführlich beschrieben.In the following, an embodiment will be described with reference to FIGS Fig. 1 described. In Fig. 1 is schematically shown a portion of an evaporator receptacle 2 and a burner cap 8 of an evaporator burner 1 for a mobile heater. In the presentation of Fig. 1 is a schematic sectional view in a plane containing a main axis Z of the evaporator burner 1 is shown. The evaporator burner 1 may, for example, essentially have a rotational symmetry with respect to the main axis Z. The evaporator burner 1 may be formed, for example, for a vehicle heater, in particular a heater or a heater. The evaporator burner 1 is in particular designed to convert a mixture of vaporized fuel and combustion air with the release of heat in a combustion chamber 4. The released heat is in a (not shown) heat exchanger on a medium to be heated, which may be formed, for example, by air or a cooling liquid transferred. In the schematic representation of Fig. 1 In particular, the heat exchanger, the discharge for the hot combustion gases, the likewise provided combustion air delivery device (eg a fan), the fuel delivery device (eg a metering pump), the control unit for controlling the evaporator burner 1, etc. are not shown. These components are well known and well described in the art.

Der Verdampferbrenner 1 weist eine Verdampferaufnahme 2 auf, in der ein poröser, saugfähiger Verdampferkörper 5 angeordnet ist. Die Verdampferaufnahme 2 weist bei dem Ausführungsbeispiel eine im Wesentlichen topfförmige Form mit einem Loch im Boden auf. Der Verdampferkörper 5 ist in der topfartigen Vertiefung der Verdampferaufnahme 2 aufgenommen und kann insbesondere fest in dieser gehalten sein, z.B. durch Verschweißen, Verlöten, Verklemmen oder unter Zuhilfenahme eines geeigneten Sicherungselements. Der Verdampferkörper 5 kann z.B. insbesondere durch ein Metallfaservlies oder eine Mehrzahl von Lagen aus Metallfaservlies gebildet sein.The evaporator burner 1 has an evaporator receptacle 2, in which a porous, absorbent evaporator body 5 is arranged. In the exemplary embodiment, the evaporator receptacle 2 has a substantially pot-shaped form with a hole in the bottom. The vaporizer body 5 is received in the pot-like recess of the evaporator receptacle 2 and in particular can be held firmly therein, e.g. by welding, soldering, jamming or with the aid of a suitable fuse element. The vaporizer body 5 may e.g. in particular be formed by a metal fiber fleece or a plurality of layers of metal fiber fleece.

Es ist ein Brennstoffrohr 6 zum Zuführen von Brennstoff zu dem Verdampferkörper 5 vorgesehen. Das Brennstoffrohr 6 mündet in die Verdampferaufnahme 2 und steht mit einer (nicht dargestellten) Brennstofffördervorrichtung in Verbindung, über die in einem vorgegebenen Maß Brennstoff durch das Brennstoffrohr 6 gefördert werden kann, wie schematisch durch einen Pfeil B dargestellt ist. Das Brennstoffrohr 6 ist, z.B. durch Verschweißen oder Verlöten fest mit der Verdampferaufnahme 2 verbunden.There is provided a fuel pipe 6 for supplying fuel to the evaporator body 5. The fuel pipe 6 opens into the evaporator receptacle 2 and communicates with a (not shown) fuel delivery device, via which fuel can be conveyed through the fuel pipe 6 in a predetermined amount, as shown schematically by an arrow B. The fuel tube 6 is, e.g. by welding or soldering firmly connected to the evaporator receptacle 2.

Der Brennraum 4 ist umfangsseitig durch eine Brennkammer 7 begrenzt, die z.B. durch ein im Wesentlichen zylindrisches Bauteil aus einem temperaturbeständigen Stahl gebildet sein kann. Die Brennkammer 7 ist mit einer Mehrzahl von Löchern 7a versehen, über die Brennluft in den Brennraum 4 zuführbar ist, wie in Fig. 1 schematisch durch verzweigte Pfeile L dargestellt ist.The combustion chamber 4 is peripherally limited by a combustion chamber 7, which may be formed for example by a substantially cylindrical member made of a temperature-resistant steel. The combustion chamber 7 is provided with a plurality of holes 7a through which combustion air can be supplied into the combustion chamber 4, as in FIG Fig. 1 schematically represented by branched arrows L.

Es ist ferner ein Brennerdeckel 8 vorgesehen, der den Brennraum 4 rückseitig der Verdampferaufnahme 2 verschließt. Der Brennerdeckel 8 ist aus Aluminium oder einer Aluminiumlegierung gefertigt und kann z.B. in einem Gussverfahren hergestellt sein. Der Brennerdeckel 8 weist ebenfalls eine im Wesentlichen topfartige Form auf und ist derart angeordnet, dass eine umlaufende Seitenwand die Verdampferaufnahme 2 umgreift. Der Brennerdeckel 8 und die Verdampferaufnahme 2 sind dabei als separate Bauteile ausgebildet, die räumlich voneinander beabstandet angeordnet sind. In einem Bodenbereich des Brennerdeckels 8 ist eine Durchtrittsöffnung vorgesehen, durch die das Brennstoffrohr 6 hindurchtritt. Die Brennkammer 7 ist fest mit dem Brennerdeckel 8 verbunden, sodass der Brennraum 4 rückseitig verschlossen ist. Die Brennkammer 7 ist bei der Ausführungsform allerdings nur über eine im Wesentlichen linienförmige Kontaktstelle mit dem Brennerdeckel 8 verbunden. Bei dem Ausführungsbeispiel weist die umlaufende Seitenwand des Brennerdeckels 8 eine umlaufende, schmale, vorspringende Rippe 8a auf, an der die Brennkammer 7 im Wesentlichen linienförmig befestigt ist. Die Brennkammer 7 kann z.B. durch Verschweißen, Verlöten oder Verstemmen mit der vorspringenden Rippe 8a verbunden sein. Durch die Verbindung der Brennkammer 7 mit dem Brennerdeckel 8 nur über die vorspringende Rippe 8a, ist eine Wärmeübertragung durch Wärmeleitung von der Brennkammer 7 auf den Brennerdeckel 8 unterdrückt bzw. stark reduziert, sodass die vorspringende Rippe 8a als thermische Isolierung für den Brennerdeckel 8 dient.It is also a burner cover 8 is provided, which closes the combustion chamber 4 back of the evaporator receptacle 2. The burner cap 8 is made of aluminum or an aluminum alloy and may be produced, for example, in a casting process. The burner cover 8 also has a substantially pot-like shape and is arranged such that a circumferential side wall surrounds the evaporator receptacle 2. The burner cover 8 and the evaporator receptacle 2 are formed as separate components, which are arranged spatially spaced from each other. In a bottom region of the burner cap 8, a passage opening is provided, through which the fuel tube 6 passes. The combustion chamber 7 is firmly connected to the burner cover 8, so that the combustion chamber 4 is closed at the back is. However, in the embodiment, the combustion chamber 7 is connected to the burner cover 8 only via a substantially linear contact point. In the embodiment, the circumferential side wall of the burner cap 8 has a circumferential, narrow, projecting rib 8a, on which the combustion chamber 7 is attached substantially linearly. The combustion chamber 7 may be connected to the projecting rib 8a, for example, by welding, soldering or caulking. By connecting the combustion chamber 7 to the burner cap 8 only via the projecting rib 8a, heat transfer by heat conduction from the combustion chamber 7 to the burner cap 8 is suppressed or greatly reduced, so that the projecting rib 8a serves as thermal insulation for the burner cap 8.

Das Brennstoffrohr 6 ist thermisch an den Brennerdeckel 8 angekoppelt, sodass eine Wärmeübertragung von dem Brennstoffrohr 6 auf den Brennerdeckel 8 erfolgen kann. Bei dem dargestellten Ausführungsbeispiel weist das Brennstoffrohr 6 einen umlaufenden Vorsprung 6a auf, über den das Brennstoffrohr 6 wärmeleitend mit dem Brennerdeckel 8 verbunden ist. Die Verbindung kann z.B. durch Verlöten oder Verschweißen realisiert sein. Anstelle eines umlaufenden Vorsprungs 6a kann das Brennstoffrohr 6 auch in anderer Weise wärmeleitend mit dem Brennerdeckel 8 verbunden sein. Es kann z.B. zwischen dem Brennstoffrohr 6 und dem Brennerdeckel 8 auch ein wärmeleitendes Element, wie z.B. ein Wärmeleitpad, zur Wärmeübertragung vorgesehen sein.The fuel tube 6 is thermally coupled to the burner cover 8, so that heat transfer from the fuel tube 6 to the burner cover 8 can take place. In the illustrated embodiment, the fuel tube 6 has a circumferential projection 6a, via which the fuel tube 6 is thermally conductively connected to the burner cover 8. The compound can e.g. be realized by soldering or welding. Instead of a circumferential projection 6a, the fuel tube 6 may be connected in a thermally conductive manner with the burner cover 8 in another way. It can e.g. between the fuel tube 6 and the burner cap 8 also a thermally conductive element, such as e.g. a Wärmeleitpad be provided for heat transfer.

Der Brennerdeckel 8 ist mit einem Luftwärmetauscher 8b zur Kühlung bzw. Abführung von Wärme von dem Brennerdeckel 8 versehen. Der Luftwärmetauscher 8b weist eine Mehrzahl von Wärmetauscherrippen (bevorzugt eine Vielzahl von Wärmetauscherrippen) auf, die über den Außenumfang des Brennerdeckels 8 verteilt sind. Die Wärmetauscherrippen ragen in den Brennluftstrom in einer Brennluftzuführung stromaufwärts des Brennraums 4. Die Wärmetauscherrippen werden im Betrieb von der zugeführten Brennluft umströmt, wie in Fig. 1 durch Pfeile L schematisch dargestellt ist, sodass Brennluft über den Luftwärmetauscher 8b geleitet wird und dieser Weise der Brennerdeckel 8 gekühlt wird. Der Luftwärmetauscher 8b kann z.B. einstückig mit dem Brennerdeckel 8 aus dem Material des Brennerdeckels 8 gebildet sein oder aber auch als separates Bauteil wärmeleitend an den Brennerdeckel 8 angekoppelt sein. Z.B. kann der Luftwärmetauscher 8b durch an der Außenwand des Brennerdeckels 8 angeformte Wärmetauscherrippen gebildet sein.The burner cap 8 is provided with an air heat exchanger 8b for cooling or dissipating heat from the burner cap 8. The air heat exchanger 8 b has a plurality of heat exchanger fins (preferably a plurality of heat exchanger fins) which are distributed over the outer circumference of the burner cover 8. The heat exchanger ribs protrude into the combustion air flow in a combustion air supply upstream of the combustion chamber 4. The heat exchanger ribs are flowed around in operation by the supplied combustion air, as in Fig. 1 is shown schematically by arrows L, so that combustion air is passed through the air heat exchanger 8b and this way the burner cover 8 is cooled. The air heat exchanger 8b may for example be formed integrally with the burner cover 8 of the material of the burner cover 8 or be coupled as a separate component thermally conductive to the burner cover 8. For example, the air heat exchanger 8b may be formed by formed on the outer wall of the burner cover 8 heat exchanger fins.

Bei der Ausführungsform ist durch die beschriebene Gestaltung das Brennstoffrohr 6 thermisch an den Brennerdeckel 8 angebunden, sodass der Brennerdeckel 8 als Wärmesenke für das Brennstoffrohr 6 dient. Aufgrund der Ausgestaltung aus Aluminium oder einer Aluminiumlegierung weist der Brennerdeckel 8 eine hohe Wärmeleitfähigkeit auf und die Wärme wird effizient zu dem Luftwärmetauscher 8b geleitet, an dem sie an die zugeführte Brennluft abgegeben wird. Ferner wird die Temperatur des Brennerdeckels 8 im Betrieb dadurch möglichst gering gehalten, dass eine thermische Isolation des Brennerdeckels 8 von heißen Bauteilen bereitgestellt ist. Dies wird z.B. dadurch erreicht, dass die Brennkammer 7 nur über eine im Wesentlichen linienförmige Kontaktstelle mit dem Brennerdeckel 8 verbunden ist und nicht über eine flächige Auflage.In the embodiment, the fuel pipe 6 is thermally connected to the burner cover 8 by the described design, so that the burner cover 8 serves as a heat sink for the fuel pipe 6. Due to the configuration of aluminum or an aluminum alloy, the burner cap 8 has a high thermal conductivity and the heat is efficiently conducted to the air heat exchanger 8b, where it is discharged to the supplied combustion air. Furthermore, the temperature of the burner cover 8 is kept as low as possible in operation, that a thermal insulation of the burner cap 8 is provided by hot components. This is e.g. achieved in that the combustion chamber 7 is connected only via a substantially linear contact point with the burner cover 8 and not on a flat support.

Da der Brennerdeckel 8 in der beschriebenen Weise effektiv als Wärmesenke für das Brennstoffrohr 6 dient, kann ein Verkleben bzw. Verstopfen von Brennstoff in dem Brennstoffrohr 6 durch eine unerwünscht hohe Wärmeeinwirkung zuverlässig verhindert werden, ohne dass eine separate Wärmesenke als separates, weiteres Bauteil vorgesehen zu werden braucht.Since the burner cover 8 effectively serves as a heat sink for the fuel pipe 6 in the manner described, sticking or clogging of fuel in the fuel pipe 6 can be reliably prevented by undesirably high heat without providing a separate heat sink as a separate, further component will need.

Obwohl dies in Fig. 1 nicht dargestellt ist und auch nicht ausdrücklich beschrieben wurde, ist der Brennraum 4 in bekannter Weise von einem Wärmetauscher zur Übertragung der freigesetzten Wärme auf ein zu erwärmendes Medium, wie z.B. Luft oder eine Flüssigkeit, umgeben. Ferner ist in an sich bekannter Weise ein Gehäuse vorgesehen, in dem der Verdampferbrenner aufgenommen ist und das eine adäquate Luftführung für die Brennluftzufuhr bereitstellt. Although this in Fig. 1 is not shown and has not been expressly described, the combustion chamber 4 in a known manner by a heat exchanger for transmitting the heat released to a medium to be heated, such as air or a liquid surrounded. Furthermore, a housing is provided in a conventional manner, in which the evaporator burner is received and which provides an adequate air flow for the combustion air supply.

Claims (5)

  1. Evaporator burner (1) for a mobile heating device, with:
    a combustion chamber (7) surrounding a combustion space (4) for converting fuel with combustion air;
    an evaporator receiving portion (2) for receiving an evaporator body (5) for evaporating liquid fuel, the evaporator receiving portion (2) being arranged at a rear side of the combustion space (4);
    a burner cap (8) which closes the combustion space (4) at the rear side of the evaporator receiving portion (2) and which is connected to the combustion chamber (7); and
    a fuel pipe (6) for supplying fuel to the evaporator body (5), the fuel pipe (6) opening into the evaporator receiving portion (2);
    wherein the burner cap (8) and the evaporator receiving portion (2) are formed as separate components;
    wherein the burner cap (8) and the evaporator receiving portion (2) are arranged spatially spaced from each other;
    characterized in that
    the fuel pipe (6) is thermally coupled to the burner cap (8) and the burner cap (8) is provided with an air heat exchanger (8b) for cooling the burner cap (8) which air heat exchanger (8b) comprises a plurality of heat exchanger fins and over which air heat exchanger (8b) supplied combustion air is guidable during operation.
  2. Evaporator burner according to claim 1, characterized in that the burner cap (8) is connected to the combustion chamber (7) only via one substantially line-shaped junction.
  3. Evaporator burner according to any of the preceding claims, characterized in that the air heat exchanger (8b) is arranged in the combustion air supply upstream of the combustion space (4).
  4. Evaporator burner according to any of the preceding claims, characterized in that the burner cap (8) is made from aluminum or from an aluminum alloy.
  5. Evaporator burner according to any of the preceding claims, characterized in that the combustion chamber (7) comprises a plurality of holes (7a) for supply of combustion air into the combustion space (4).
EP12718585.8A 2011-04-30 2012-04-05 Evaporator burner for a mobile heating unit Active EP2705299B1 (en)

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DE102011050025A DE102011050025A1 (en) 2011-04-30 2011-04-30 Evaporator burner for a mobile heater
PCT/DE2012/100093 WO2012149928A1 (en) 2011-04-30 2012-04-05 Evaporator burner for a mobile heating unit

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EP2705299A1 EP2705299A1 (en) 2014-03-12
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EP (1) EP2705299B1 (en)
KR (1) KR101538568B1 (en)
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Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201422994A (en) * 2012-12-11 2014-06-16 Pro Iroda Ind Inc Secured combustion device
DE102013200016A1 (en) * 2013-01-02 2014-07-03 Eberspächer Climate Control Systems GmbH & Co. KG Catalytic burner, in particular for vehicle heating
DE102013220653B4 (en) * 2013-10-14 2019-12-05 Eberspächer Climate Control Systems GmbH & Co. KG Combustion chamber assembly, in particular for an evaporator burner
DE102013220655B4 (en) * 2013-10-14 2016-01-14 Eberspächer Climate Control Systems GmbH & Co. KG Floor assembly for a combustion chamber assembly of an evaporator burner
DE102013220654B4 (en) * 2013-10-14 2023-10-19 Eberspächer Climate Control Systems GmbH Combustion chamber assembly for an evaporator burner
DE102014103815B4 (en) * 2014-03-20 2018-07-19 Webasto SE evaporative burner
DE102014103817B4 (en) 2014-03-20 2018-07-19 Webasto SE Evaporator burner for a mobile liquid fueled heater
DE102014103813A1 (en) 2014-03-20 2015-09-24 Webasto SE Evaporator burner assembly for a mobile liquid fueled heater
DE102014103812A1 (en) 2014-03-20 2015-09-24 Webasto SE Evaporator burner for a mobile liquid fueled heater
DK178844B1 (en) 2014-07-16 2017-03-20 Serenergy As A burner evaporator for a fuel cell system
DE102014117116B4 (en) * 2014-11-23 2019-07-18 Webasto SE Heater evaporator body and method of making such
DE102014117115A1 (en) * 2014-11-23 2016-05-25 Webasto SE evaporator assembly
DE102015110829B4 (en) * 2015-07-06 2019-11-28 Webasto SE Porous fuel processing element
DE102015110828B4 (en) * 2015-07-06 2019-11-28 Webasto SE Porous fuel processing element
EP3910261A1 (en) 2016-03-30 2021-11-17 Marine Canada Acquisition Inc. Vehicle heater and controls therefor
DE102016116687B4 (en) * 2016-09-07 2019-12-05 Eberspächer Climate Control Systems GmbH & Co. KG Combustion chamber assembly for an evaporator burner
CN108758636B (en) * 2018-04-04 2019-08-16 北京理工大学 A kind of classification cyclone burner of biomass liquid fuel and metallic particles cofiring
DE102018111636A1 (en) * 2018-05-15 2019-11-21 Webasto SE Evaporator assembly for mobile heaters
TW202012846A (en) * 2018-09-18 2020-04-01 愛烙達股份有限公司 Combustion device with heat dissipation and insulation pad
CN110529845B (en) * 2019-07-29 2020-08-07 中国科学院广州能源研究所 Vortex tubular flame burner for directly burning liquid fuel
CN111042918B (en) * 2019-12-31 2021-08-03 罗辉 Variable cycle engine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR840000403B1 (en) * 1979-09-28 1984-03-30 페트르 피스테르, 옷토 폰 뷔렌 Apparatus for burning liquid fuel
DE3233321C2 (en) * 1982-09-08 1986-08-07 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Evaporation burner
DE3509347A1 (en) * 1985-03-15 1986-09-25 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting INTERMEDIATE HOUSING FOR A FUEL-OPERATED HEATER
DE3914611C2 (en) * 1988-06-09 1996-09-26 Webasto Ag Fahrzeugtechnik Evaporation burner for a heater operated with liquid fuel
DE4003090C1 (en) * 1990-02-02 1991-06-13 Webasto Ag Fahrzeugtechnik, 8035 Stockdorf, De
JP2520062B2 (en) * 1991-08-06 1996-07-31 株式会社ミクニ Evaporative burner
DE4442425B4 (en) * 1994-05-13 2004-09-16 J. Eberspächer GmbH & Co. KG Combustion chamber of a burner for a vehicle heater or for an exhaust gas particle filter
DE4420982A1 (en) * 1994-06-16 1994-10-27 Quaas Hans Rainer Dipl Ing Miniature liquid fuel burner for stand-by vehicle heating
DE19717544A1 (en) * 1997-04-25 1998-10-29 Eberspaecher J Gmbh & Co Evaporator burner for a heater or a thermal regeneration of an exhaust gas particle filter
EP1084340B1 (en) * 1998-05-04 2009-04-08 XRDi Multi-fuel engine
DE10136292A1 (en) * 2001-07-25 2003-02-13 Eberspaecher J Gmbh & Co Vaporizer burner used in heating devices of motor vehicles comprises an ignition heating element igniting fuel vapor, and a vaporizer heating element influencing the vaporizing characteristics of a vaporizer medium
RU2239128C1 (en) * 2003-11-17 2004-10-27 Кордит Евсей Аврумович Burner unit
DE102004005267A1 (en) * 2004-02-03 2005-08-25 J. Eberspächer GmbH & Co. KG Vaporising burner for vehicle heater, has combustion chamber casing with double wall structure
DE102005004359A1 (en) * 2005-01-31 2006-08-03 J. Eberspächer GmbH & Co. KG Combustion chamber housing for evaporator burner e.g. vehicle heating device has tubular housing part, which is open in first axial end area, for providing outlet for combustion products whereby housing part is manufactured by casting
DE102009003383B4 (en) * 2009-01-23 2013-01-10 Webasto Ag Evaporator burner for a vehicle heater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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CN103502731A (en) 2014-01-08
KR101538568B1 (en) 2015-07-21
WO2012149928A1 (en) 2012-11-08
KR20140039207A (en) 2014-04-01
DE102011050025A1 (en) 2012-10-31
EP2705299A1 (en) 2014-03-12
US20140193759A1 (en) 2014-07-10
CN103502731B (en) 2016-01-13
RU2013153267A (en) 2015-06-10
RU2567343C2 (en) 2015-11-10

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