EP0337408A2 - Brûleur à vaporisation et procédé de fonctionnement d'un brûleur à vaporisation - Google Patents

Brûleur à vaporisation et procédé de fonctionnement d'un brûleur à vaporisation Download PDF

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Publication number
EP0337408A2
EP0337408A2 EP89106437A EP89106437A EP0337408A2 EP 0337408 A2 EP0337408 A2 EP 0337408A2 EP 89106437 A EP89106437 A EP 89106437A EP 89106437 A EP89106437 A EP 89106437A EP 0337408 A2 EP0337408 A2 EP 0337408A2
Authority
EP
European Patent Office
Prior art keywords
switched
burner
fuel
glow plug
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.)
Withdrawn
Application number
EP89106437A
Other languages
German (de)
English (en)
Other versions
EP0337408A3 (fr
Inventor
Peter Dipl.-Ing. Reiser
Erich Kenner
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
J Eberspaecher 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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP0337408A2 publication Critical patent/EP0337408A2/fr
Publication of EP0337408A3 publication Critical patent/EP0337408A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • 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
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/448—Vaporising devices incorporated with burners heated by electrical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/06—Regulating fuel supply conjointly with draught
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/18—Detecting fluid leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/02—Ventilators in stacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties

Definitions

  • the invention relates to an evaporator burner for, for example, auxiliary heaters in motor vehicles, having a combustion air blower, a fuel metering pump which inputs into an evaporator fuel which at least partially surrounds a glow plug which serves to start the burner, for example contains a fiber pack or the like, and which, in the evaporated state, together with combustion air burns.
  • the invention also relates to a method for operating an engine-independent evaporator burner, which is fed with liquid fuel, for example a parking heater, for a motor vehicle, in which a glow plug for igniting a fuel / air mixture in a combustion chamber of the burner is used to start the evaporator burner certain time is supplied with electricity.
  • Vaporizer burners of the type mentioned above are primarily used in heaters for motor vehicles, that is to say in so-called auxiliary or auxiliary heaters for buses, trucks and also passenger cars.
  • the invention relates generally to evaporator burners, not only those for auxiliary heaters, but also, for example, for soot filter burners, which are used to remove soot back serve stands. In the following, however, reference should be made specifically to the field of parking heaters in order to explain the invention.
  • burners for example burners, which work with a pressure atomizer or a rotary atomizer, especially in the case of engine-independent auxiliary heaters for motor vehicles which operate with liquid fuel.
  • evaporator burners in which the fuel is not atomized to form a fuel / air mixture, but is vaporized.
  • the different types of burners each have certain advantages and disadvantages.
  • fuel is supplied from a fuel metering pump to an evaporator arrangement in a combustion chamber.
  • This evaporator arrangement consists, for example, of a kind of fiber packing or mesh which - to start the burner - fills an area near a glow plug.
  • the fuel coming from the metering pump is taken up by the fiber packing and reaches the flame area of a combustion chamber by capillary action.
  • the glow plug is connected to a voltage source for a certain time. Air is also blown into the combustion chamber by a combustion air blower. Basically, switching on the glow plug, supplying combustion air and metering in fuel can be initiated at the same time, but usually it is only preheated when the combustion air is supplied, and then fuel is metered in.
  • the glow plug the vaporized fuel in the presence of air reaches the ignition temperature, so that the combustion process starts. After this starting process, the glow plug is switched off.
  • the heater is started, in particular when preheating with simultaneous supply of combustion air, the fuel remaining in the fiber pack or the network from the previous burning process is then consumed before new fuel is supplied and the fuel / air mixture is ignited.
  • the invention has for its object to provide an evaporator burner and a method for operating an evaporator burner of the type mentioned, in which the formation of smoke after switching off the burner and / or when the burner is switched on again as far as possible is avoided, and furthermore contamination of the burner arrangement is largely prevented.
  • this object is achieved by an afterglow control which switches the glow plug on for a predetermined period of time after the fuel metering pump has been switched off.
  • the afterglow control can be implemented by a microprocessor, which also takes on other control tasks.
  • the glow plug is switched on for a predetermined period of time after the evaporator burner has been switched off.
  • the glow plug can be switched on at the same time as the burner is switched off, preferably after the fuel delivery has ended.
  • the glow plug can also be switched on by switching off the evaporator burner.
  • Evaporator burners are usually operated in such a way that the combustion air fan continues to run for a time after the fuel supply has ended, in order to keep the combustion process going until the flame breaks off due to the mixture being too lean.
  • the evaporator burners achieve a similarly good operating behavior to, for example, burners with a rotary atomizer or pressure atomizer.
  • the temperature of the residual fuel remaining in the area of the candle socket and possibly also in the area of the combustion chamber after the fuel supply has ended is increased in such a way that the residual fuel burns practically without residue.
  • the flame only breaks off much later, since the glow plug promotes the evaporation of the fuel and ensures a sufficiently high temperature of the evaporated fuel. This gives you a sufficiently rich fuel / air mixture while the combustion air is being supplied at the same time.
  • An evaporator burner for a parking heater of a motor vehicle will be described below as an example of the invention.
  • the structure of the heater with the evaporator burner is known per se. Control of operations is new here.
  • a parking heater for a motor vehicle has a housing 1 with a combustion chamber 2 mounted inside the housing, which is supplied, for example, with combustion air VL (not shown) on the front side by a combustion air blower.
  • combustion air VL (not shown) on the front side by a combustion air blower.
  • the combustion air VL mixes with vaporized fuel.
  • the fuel is supplied by a fuel metering pump (also not shown) in the direction of the arrow (B).
  • the line coming from the fuel metering pump opens into an area of a glow plug 3.
  • the glow plug 3 is mounted in a candle socket which receives a network structure or a fiber packing which can extend into the area of the combustion chamber 2.
  • the fuel B entering the area of the candle socket is absorbed by the fiber packing and reaches the area of the combustion chamber 2 by capillary action, whereby the fuel evaporates on the inside surface of the candlestick and the combustion chamber.
  • the evaporated fuel mixes with the supplied combustion air VL.
  • the glow plug 3 is supplied with current for a predetermined time so that it takes on a relatively high temperature which is sufficient to cause the fuel / air mixture to ignite within the combustion chamber.
  • the flame and the hot exhaust gases pass in the direction of the dashed arrows in FIG. 1 to the right) through the interior of the housing, which is only partially shown, are deflected at the end of the device, not shown, and reach the exhaust gas A at the level of the combustion chamber 2 as an exhaust .
  • the hot combustion gases heat the water flowing in a heat exchanger.
  • the water enters as cold water in the direction of arrow WE in a water pump 5 and is pumped by the water pump 5 approximately in a spiral through the annular space of the heat exchanger 4 between an inner and an outer housing wall before it exits heated at an arrow WA. From there, the heated water reaches a radiator, for example, which is arranged at a suitable point on the vehicle.
  • the combustion air blower and the glow plug 3 are first switched on. After a pre-glow phase, fuel is then supplied by switching on the fuel metering pump, so that the fuel / air mixture is evaporated soon. When a certain target or maximum temperature is reached (this is from a sensor and not shown here Control arrangement determined), the fuel supply is blocked by switching off the fuel metering pump. The combustion air fan remains switched on during a run-on phase. When the burner is switched off, ie when the fuel metering pump is switched off, the glow plug 3 is switched on. As a result, the remaining fuel within the candle socket and in the area of the combustion chamber 2 is heated and its evaporation is promoted. As a result, the burner continues to run for a while until practically all of the remaining fuel has evaporated from the candle socket and burned. Only then does the mixture of fuel and combustion air become so lean that the flame breaks off.
  • step S2 The burner is switched off in step S1, and the glow plug 3 is then switched on in step S2. Then a counter is set to a certain counter reading in a control (not shown here, for example in the form of a microprocessor) and the counter begins to count down. In step S4 it is queried whether the counter reading "0" has already been reached. If so, the afterburn phase is complete. Then the glow plug is turned off in step S5. The air blower is also switched off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Control Of Combustion (AREA)
  • Spray-Type Burners (AREA)
EP89106437A 1988-04-13 1989-04-11 Brûleur à vaporisation et procédé de fonctionnement d'un brûleur à vaporisation Withdrawn EP0337408A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3812299A DE3812299A1 (de) 1988-04-13 1988-04-13 Verdampferbrenner und verfahren zum betreiben eines verdampferbrenners
DE3812299 1988-04-13

Publications (2)

Publication Number Publication Date
EP0337408A2 true EP0337408A2 (fr) 1989-10-18
EP0337408A3 EP0337408A3 (fr) 1990-05-30

Family

ID=6351896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106437A Withdrawn EP0337408A3 (fr) 1988-04-13 1989-04-11 Brûleur à vaporisation et procédé de fonctionnement d'un brûleur à vaporisation

Country Status (4)

Country Link
US (1) US4931011A (fr)
EP (1) EP0337408A3 (fr)
CA (1) CA1315187C (fr)
DE (2) DE3812299A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500878A3 (fr) * 2003-07-21 2008-07-16 J. Eberspächer GmbH & Co. KG Procédé pour arrêter le fonctionnement d'un dispositif de chauffage pour véhicule
WO2018095990A1 (fr) * 2016-11-25 2018-05-31 Webasto SE Appareil de chauffage à combustible pour véhicule et procédé permettant de faire fonctionner un appareil de chauffage à combustible pour véhicule
US11148504B2 (en) * 2016-11-29 2021-10-19 Webasto SE Fuel-operated vehicle heating device and method to operating a fuel-operated vehicle heating device

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0384303A (ja) * 1989-08-29 1991-04-09 Isuzu Motors Ltd 液体燃料気化装置
DE4014185A1 (de) * 1990-05-03 1991-11-07 Webasto Ag Fahrzeugtechnik Verfahren zum betreiben eines mit fluessigbrennstoff gespeisten brenners
DE4032495A1 (de) * 1990-10-12 1992-04-23 Wamsler Herd & Ofen Gmbh Oelverdampfungsbrenner
AT396829B (de) * 1990-12-27 1993-12-27 Vaillant Gmbh Verfahren zur einleitung der verbrennung
JP2673325B2 (ja) * 1991-11-13 1997-11-05 本田技研工業株式会社 内燃エンジンの制御装置
DE19605216C5 (de) * 1996-02-13 2010-01-21 Webasto Ag Verfahren zum Betreiben eines Fahrzeugzusatzheizgerätes und Glüheinrichtung
DE19605325C1 (de) * 1996-02-14 1997-02-27 Webasto Thermosysteme Gmbh Verfahren zum Betreiben eines Fahrzeugheizgeräts
US7177535B2 (en) * 2003-07-01 2007-02-13 Philip Morris Usa Inc. Apparatus for generating power and hybrid fuel vaporization system
DE10347509B4 (de) * 2003-10-13 2006-08-10 Webasto Ag Heizgerät mit einer Zerstäuberdüse
WO2005075891A1 (fr) * 2004-02-06 2005-08-18 Santino Genovese Unite de prechauffage pour une turbine et turbine comprenant ladite unite de prechauffage
DE102004041202C5 (de) * 2004-08-25 2019-02-28 Webasto Ag Verfahren zum Abschalten eines Kraftfahrzeugheizgerätes und hierfür vorgesehenes Steuergerät
DE102004041201C5 (de) * 2004-08-25 2015-08-06 Webasto Ag Verfahren zum Starten eines Fahrzeugzusatzheizgerätes
DE102005001908B4 (de) * 2005-01-14 2006-11-09 J. Eberspächer GmbH & Co. KG Verfahren zum Beenden des Heizbetriebs eines Fahrzeugheizgerätes
CN102575548B (zh) * 2009-10-22 2013-11-06 丰田自动车株式会社 内燃机的排气净化装置
CN105509044B (zh) * 2014-09-26 2018-05-04 承德坤元环保科技有限公司 一种燃油气化燃烧器的制造方法
CA3019194A1 (fr) 2016-03-30 2017-10-05 Marine Canada Acquisition Inc. Appareil de chauffage de vehicule et commandes associees
CN111855252B (zh) * 2020-08-10 2021-02-09 中国安全生产科学研究院 一种自动控制型热烟测试系统

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Publication number Priority date Publication date Assignee Title
CH182198A (de) * 1934-12-17 1936-01-31 Surber Hans Verfahren und Vorrichtung zum Entzünden von flüssigen und gasförmigen Brennstoffen.
US2966942A (en) * 1955-11-04 1961-01-03 Controls Co Of America Electrical ignition assembly for liquid fuel burners
SE329230B (fr) * 1968-04-18 1970-10-05 Bahco Ab
US4035135A (en) * 1976-02-05 1977-07-12 Honeywell Inc. Postpurge pilot burner sequencing means
DE3134818A1 (de) * 1981-09-03 1983-03-10 Wilhelm Herm. Müller & Co KG, 3000 Hannover Vergaser fuer brenn- bzw. kraftstoffe
DE3243395C2 (de) * 1982-11-24 1985-07-25 Danfoss A/S, Nordborg Verdampfungsbrenner für flüssigen Brennstoff
FR2560355B1 (fr) * 1984-02-27 1989-07-28 Webasto Werk Baier Kg W Bruleur a vaporisation pour chauffage de vehicules automobiles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500878A3 (fr) * 2003-07-21 2008-07-16 J. Eberspächer GmbH & Co. KG Procédé pour arrêter le fonctionnement d'un dispositif de chauffage pour véhicule
WO2018095990A1 (fr) * 2016-11-25 2018-05-31 Webasto SE Appareil de chauffage à combustible pour véhicule et procédé permettant de faire fonctionner un appareil de chauffage à combustible pour véhicule
RU2725590C1 (ru) * 2016-11-25 2020-07-02 Вебасто Се Работающее на топливе обогревательное устройство транспортного средства и способ эксплуатации работающего на топливе обогревательного устройства транспортного средства
US11161391B2 (en) 2016-11-25 2021-11-02 Webasto SE Fuel-operated vehicle heater and method for operating a fuel-operated vehicle heater
US11148504B2 (en) * 2016-11-29 2021-10-19 Webasto SE Fuel-operated vehicle heating device and method to operating a fuel-operated vehicle heating device

Also Published As

Publication number Publication date
US4931011A (en) 1990-06-05
CA1315187C (fr) 1993-03-30
DE8816636U1 (de) 1990-02-08
EP0337408A3 (fr) 1990-05-30
DE3812299A1 (de) 1989-10-26

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