EP2705299B1 - Verdampferbrenner für ein mobiles heizgerät - Google Patents

Verdampferbrenner für ein mobiles heizgerät 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
Authority
EP
European Patent Office
Prior art keywords
evaporator
burner
combustion
fuel
heat exchanger
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
EP12718585.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2705299A1 (de
Inventor
Steffen Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Webasto SE
Original Assignee
Webasto SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Webasto SE filed Critical Webasto SE
Publication of EP2705299A1 publication Critical patent/EP2705299A1/de
Application granted granted Critical
Publication of EP2705299B1 publication Critical patent/EP2705299B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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.
EP12718585.8A 2011-04-30 2012-04-05 Verdampferbrenner für ein mobiles heizgerät Active EP2705299B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011050025A DE102011050025A1 (de) 2011-04-30 2011-04-30 Verdampferbrenner für ein mobiles Heizgerät
PCT/DE2012/100093 WO2012149928A1 (de) 2011-04-30 2012-04-05 Verdampferbrenner für ein mobiles heizgerät

Publications (2)

Publication Number Publication Date
EP2705299A1 EP2705299A1 (de) 2014-03-12
EP2705299B1 true EP2705299B1 (de) 2017-08-02

Family

ID=46026593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12718585.8A Active EP2705299B1 (de) 2011-04-30 2012-04-05 Verdampferbrenner für ein mobiles heizgerät

Country Status (7)

Country Link
US (1) US20140193759A1 (zh)
EP (1) EP2705299B1 (zh)
KR (1) KR101538568B1 (zh)
CN (1) CN103502731B (zh)
DE (1) DE102011050025A1 (zh)
RU (1) RU2567343C2 (zh)
WO (1) WO2012149928A1 (zh)

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TW201422994A (zh) * 2012-12-11 2014-06-16 Pro Iroda Ind Inc 具安全性的燃燒裝置
DE102013200016A1 (de) * 2013-01-02 2014-07-03 Eberspächer Climate Control Systems GmbH & Co. KG Katalytischer Brenner, insbesondere für eine Fahrzeugheizung
DE102013220654B4 (de) * 2013-10-14 2023-10-19 Eberspächer Climate Control Systems GmbH Brennkammerbaugruppe für einen Verdampferbrenner
DE102013220653B4 (de) * 2013-10-14 2019-12-05 Eberspächer Climate Control Systems GmbH & Co. KG Brennkammerbaugruppe, insbesondere für einen Verdampferbrenner
DE102013220655B4 (de) * 2013-10-14 2016-01-14 Eberspächer Climate Control Systems GmbH & Co. KG Bodenbaugruppe für eine Brennkammerbaugruppe eines Verdampferbrenners
DE102014103812A1 (de) 2014-03-20 2015-09-24 Webasto SE Verdampferbrenner für ein mobiles, mit flüssigem Brennstoff betriebenes Heizgerät
DE102014103813A1 (de) 2014-03-20 2015-09-24 Webasto SE Verdampferbrenneranordnung für ein mobiles, mit flüssigem Brennstoff betriebenes Heizgerät
DE102014103817B4 (de) 2014-03-20 2018-07-19 Webasto SE Verdampferbrenner für ein mobiles, mit flüssigem Brennstoff betriebenes Heizgerät
DE102014103815B4 (de) 2014-03-20 2018-07-19 Webasto SE Verdampferbrenner
DK178844B1 (en) * 2014-07-16 2017-03-20 Serenergy As A burner evaporator for a fuel cell system
DE102014117115A1 (de) * 2014-11-23 2016-05-25 Webasto SE Verdampferanordnung
DE102014117116B4 (de) * 2014-11-23 2019-07-18 Webasto SE Heizgerät-Verdampferkörper und Verfahren zur Herstellung eines solchen
DE102015110829B4 (de) * 2015-07-06 2019-11-28 Webasto SE Poröses Brennstoffaufbereitungselement
DE102015110828B4 (de) * 2015-07-06 2019-11-28 Webasto SE Poröses Brennstoffaufbereitungselement
AU2017244041B2 (en) 2016-03-30 2022-12-01 Marine Canada Acquisition Inc. Vehicle heater and controls therefor
DE102016116687B4 (de) * 2016-09-07 2019-12-05 Eberspächer Climate Control Systems GmbH & Co. KG Brennkammerbaugruppe für einen Verdampferbrenner
CN108758636B (zh) * 2018-04-04 2019-08-16 北京理工大学 一种生物质液体燃料与金属颗粒共燃的分级旋流燃烧装置
DE102018111636A1 (de) * 2018-05-15 2019-11-21 Webasto SE Verdampferbaugruppe für mobile Heizgeräte
TW202012846A (zh) * 2018-09-18 2020-04-01 愛烙達股份有限公司 具散熱隔熱墊的燃燒裝置
CN110529845B (zh) * 2019-07-29 2020-08-07 中国科学院广州能源研究所 一种直接燃烧液体燃料的涡流管状火焰燃烧器
CN111042918B (zh) * 2019-12-31 2021-08-03 罗辉 一种变循环发动机

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Also Published As

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

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