EP1544543B1 - Heizgerät, insbesondere Fahrzeugheizgerät - Google Patents

Heizgerät, insbesondere Fahrzeugheizgerät Download PDF

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Publication number
EP1544543B1
EP1544543B1 EP04023242A EP04023242A EP1544543B1 EP 1544543 B1 EP1544543 B1 EP 1544543B1 EP 04023242 A EP04023242 A EP 04023242A EP 04023242 A EP04023242 A EP 04023242A EP 1544543 B1 EP1544543 B1 EP 1544543B1
Authority
EP
European Patent Office
Prior art keywords
fuel
combustion chamber
evaporator medium
heating device
lines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04023242A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1544543A3 (de
EP1544543A2 (de
Inventor
Wolfgang Pfister
Christoph Köberle
Bernd Haber
Jürgen Peschke
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
Priority to PL04023242T priority Critical patent/PL1544543T3/pl
Publication of EP1544543A2 publication Critical patent/EP1544543A2/de
Publication of EP1544543A3 publication Critical patent/EP1544543A3/de
Application granted granted Critical
Publication of EP1544543B1 publication Critical patent/EP1544543B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/04—Feeding or distributing systems using pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2300/00—Pretreatment and supply of liquid fuel
    • F23K2300/20—Supply line arrangements

Definitions

  • the present invention relates to a heater, in particular vehicle heater, according to the preamble of claim 1.
  • liquid fuel is generally first introduced into an evaporator medium and promoted or distributed in this evaporator medium by utilizing the capillary effect .
  • the evaporator medium is constructed of porous or braided material and distributes and promotes the fuel toward a combustion chamber, so that it can evaporate at the combustion chamber facing side of the evaporator medium and burn together with the present in the combustion chamber combustion air.
  • the quality of the combustion taking place in such a heater depends essentially on the most uniform possible distribution of the combustion over the volume of the combustion chamber and thus a correspondingly uniform possible fuel distribution or distribution of the air / fuel vapor mixture in the combustion chamber.
  • a heater according to the preamble of claim 1 is known from DE 100 05 376 A1 known.
  • this known heater is conveyed by means of the fuel line arrangement of the funded by a fuel pump fuel through different fuel lines at different positions in the direction of the combustion chamber.
  • a fuel pipe leads to a region in which a porous evaporator medium formed as a mesh is arranged on an inner side of an outer peripheral wall of the combustion chamber housing.
  • Another fuel line opens into a further heated by a fuel heater further formed as a braid porous evaporator medium.
  • the fuel evaporated therefrom enters an auxiliary chamber in which an ignition device which can be activated to start the combustion is positioned.
  • the post-published EP 1 394 102 A1 discloses an evaporator assembly for providing a hydrogenated reformate. Liquid hydrocarbon is introduced at several circumferential positions in a porous evaporator medium.
  • This includes a fuel supply line system with which, with a simple structure, an improved distribution of fuel introduction into a combustion chamber assembly can be achieved.
  • a heater in particular vehicle heater, according to claim 1.
  • This comprises a Brennstoffzu111 Gustavssystem for supplying liquid fuel to a combustion chamber assembly, comprising a fuel line assembly, at least in their adjoining the combustion chamber assembly a plurality of in different areas of the combustion chamber assembly includes opening fuel lines.
  • the present invention thus provides that the fuel is not introduced into the combustion chamber assembly at a locally very limited area, but that by providing multiple fuel lines directly and without special measures in the combustion chamber assembly of the fuel distributed at several positions in the combustion chamber assembly can be initiated.
  • the combustion chamber assembly comprises a combustion chamber forming, substantially pot-like combustion chamber housing with an outer peripheral wall, wherein at least two of the fuel lines in Introduce fuel in the direction of combustion chamber in different peripheral areas.
  • a liquid fuel from the fuel lines receiving evaporator medium is provided on an inner side of the outer peripheral wall.
  • At least one of the fuel lines opens into an auxiliary chamber receiving an ignition element.
  • fuel is provided by the evaporator medium receiving at least one fuel line opening into the latter.
  • the auxiliary chamber communicates with the combustion chamber.
  • the fuel which may be further fed into the secondary chamber can be used for combustion in the combustion chamber itself, the evaporator medium of the secondary chamber is included the evaporator medium of the combustion chamber in fluid communication connection.
  • the fuel lines are connected in their end region remote from the combustion chamber assembly to a fuel supply line, which fuel supply line is connected to a fuel metering pump.
  • a fuel supply piping system is generally indicated at 10.
  • liquid fuel which is supplied by a metering pump or other conveyor, not shown, are fed towards a combustion chamber assembly 12 of a heater.
  • This heater may for example be a heater or a heater in a vehicle that is operated with the same fuel as the vehicle itself, so gasoline or diesel fuel.
  • the combustion chamber assembly 12 of the heater comprises an example pot-like ausgestaltetes combustion chamber housing 14 having a peripheral wall 16 and a not further in terms of their design details bottom wall, via which, for example, the combustion air can be supplied.
  • the inner side 18 of the peripheral wall 16 is at least partially covered with an evaporator medium 20.
  • This evaporator medium 20 is generally of a porous or braid-like structure to convey liquid fuel received therein by utilizing a capillary action toward a side 24 of the evaporator medium 20 facing a combustion chamber 22. In this way, in the combustion chamber 22, a mixture of vaporized fuel and combustion air can be generated, which can be ignited and burned.
  • a secondary chamber 26 which is open through an opening 28 to the combustion chamber 22 and in which a like Glühzündit o.dgl. Shaped ignition device 30 can be accommodated. Also, the secondary chamber 26 is at least partially occupied on its inner side with an evaporator medium 32, so that even there exploited by exploiting the Kapillarrion Quretion rate, and discharged into the secondary chamber 26.
  • this supply line 34 in the example shown merges into three fuel lines 38, 40, 42.
  • the end 36 of the supply line 34 may be closed in a fuel-tight manner, for example, by a soldering sleeve 44 that also surrounds and tightly seals the fuel lines 38, 40, 42.
  • the fuel lines 38, 40, 42 are positioned so that the closest possible package, i. the lowest possible overall line cross-section results.
  • the fuel line 38 leads from the fuel supply line 34 in the direction of the secondary chamber 26 and opens in its end region 48 in this.
  • the opening of the fuel line 38 is covered by the evaporator medium 32, so that via the fuel line 38, the liquid fuel is fed into the evaporator medium 32 and then can be distributed in this under the already mentioned capillary action.
  • the fuel lines 40 and 42 close in their end regions 50 and 52 to the combustion chamber housing 14 and the peripheral wall 16 thereof and thus open into the combustion chamber 22 formed in the combustion chamber housing 14.
  • the openings of the fuel lines 40, 42 are covered by the evaporator medium 20, so that here too the fuel is fed from the fuel lines 40, 42 in the evaporator medium 20 and is then further distributed in this capillary action.
  • the fuel supply line system 10 with a plurality of fuel in different areas in the fuel assembly 12 feeding fuel lines can be ensured that substantially independent of which position the combustion chamber assembly 12 and a heater having them is installed in a vehicle , is always ensured that in those areas in which a fuel line opens into a respective chamber or connects to an evaporator medium, fuel is provided.
  • the locations at which the fuel lines connect to the combustion chamber assembly 12 may also be selected, for example, depending on the intended installation situation, as well as, of course, the number of fuel lines leading into the various regions of the combustor assembly 12 may be selected according to the given requirements.
  • two or more fuel lines lead into the secondary chamber 26, while more than two lines can lead into the combustion chamber 22.
  • the fuel lines leading into the secondary chamber 26 or the fuel lines leading into the combustion chamber 22 can also be selected with regard to their point of confluence so that they open in different axial areas, axially relative to the longitudinal extent of the respective chamber or, as in FIG Fig. 1 with respect to the fuel lines 40, 42, open in different peripheral areas.
  • the combustion chamber housing 14 and / or the evaporator medium 22 provided therein, as well as in the auxiliary chamber 26 or a housing enclosing these and / or the evaporator medium 32 measures for targeted fuel transfer, such as coarser channels, deflection o .dgl. willing to keep, which further support the already achieved by the inventive arrangement distribution.
  • the fuel lines 38, 40, 42 may be configured with respect to their conveying cross-section that they are capable of conveying under capillary action, also considering the fuel to be used, ie the liquid medium to be conveyed. This further contributes to an improved conveying effect and thus to an improved fuel feed. Furthermore, it can be provided that the different fuel lines have at least partially mutually different line cross-sections. In this way, the fuel distribution can be influenced and it is possible to compensate for different line lengths, which have different flow resistance, by appropriate cross-sectional adaptation.
  • the various fuel lines 38, 40, 42 or the line system in the pressure-side region of a combustion air blower or / and a heating air system.
  • the line system and thus the fuel carried therein can be cooled, so that temperatures of less than 100 ° C and thus below the boiling point of diesel or diesel-like fuels can be achieved. The occurrence of deposits in the pipe system can therefore be avoided.
  • the fuel introduced into the evaporator medium 32 of the secondary chamber 26 via the fuel line 38 can be used for combustion.
  • the evaporator medium 32 of the secondary chamber 26 can be used and the evaporator medium 20 of the combustion chamber 22 are in contact with each other so that a fluid exchange can take place.
  • deactivation of the ignition device does not entail the risk that excessive fuel accumulation will occur in the transitional region between the two chambers 26, 30.
  • a fuel supply line system 10 designed according to the invention achieves a significantly more uniform introduction of fuel with a structure that is very simple to implement.
  • a more uniform introduction of fuel also has the consequence that the volume of the respective porous evaporator medium present in the various chambers can be used in an improved manner for distributing the fuel, thus making better use of the surface over which evaporation then takes place into the respective chamber.
  • This in turn requires a much more uniform distribution of the air / fuel vapor mixture, in particular in the combustion chamber 22 and thus a more uniform temperature distribution in the equally uniformed combustion in the combustion chamber 22. In this way, the pollutant emissions in almost all operating conditions can be reduced and it the risk of the occurrence of combustion resonances in the starting phase can be reduced.

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)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
EP04023242A 2003-12-19 2004-09-29 Heizgerät, insbesondere Fahrzeugheizgerät Expired - Lifetime EP1544543B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04023242T PL1544543T3 (pl) 2003-12-19 2004-09-29 Urządzenie grzejne, w szczególności urządzenie grzejne do pojazdów

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360009A DE10360009A1 (de) 2003-12-19 2003-12-19 Brennstoffzuführleitungssystem bei einem Heizgerät, insbesondere Fahrzeugheizgerät
DE10360009 2003-12-19

Publications (3)

Publication Number Publication Date
EP1544543A2 EP1544543A2 (de) 2005-06-22
EP1544543A3 EP1544543A3 (de) 2008-12-31
EP1544543B1 true EP1544543B1 (de) 2012-08-15

Family

ID=34485531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04023242A Expired - Lifetime EP1544543B1 (de) 2003-12-19 2004-09-29 Heizgerät, insbesondere Fahrzeugheizgerät

Country Status (3)

Country Link
EP (1) EP1544543B1 (pl)
DE (1) DE10360009A1 (pl)
PL (1) PL1544543T3 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005016237B3 (de) * 2005-04-08 2006-11-30 J. Eberspächer GmbH & Co. KG Brennkammergehäuse, insbesondere für ein Fahrzeugheizgerät, und Verfahren zu dessen Herstellung
DE102005037622A1 (de) 2005-08-09 2007-02-15 J. Eberspächer GmbH & Co. KG Fahrzeugheizsystem
DE102006030614A1 (de) 2006-07-03 2008-01-17 J. Eberspächer GmbH & Co. KG Brennkammerbaugruppe für ein Fahrzeugheizgerät

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097315B1 (de) * 1982-06-21 1987-03-18 Progress-Werk Oberkirch Ag Ölbrenneranordnung für Feldkochherde
GB2210446B (en) * 1987-09-30 1991-09-18 Gen Electric Fuel distribution system
US5722588A (en) * 1994-04-13 1998-03-03 Nippon Soken Inc. Combustion heater
DE4442425B4 (de) * 1994-05-13 2004-09-16 J. Eberspächer GmbH & Co. KG Brennkammer eines Brenners für ein Fahrzeugheizgerät oder für einen Abgas-Partikelfilter
DE4443865C2 (de) * 1994-12-09 1999-01-14 Eberspaecher J Gmbh & Co Glühzündeinrichtung eines Verdampfungsbrenners
DE19504183A1 (de) * 1995-02-09 1996-08-14 Eberspaecher J Brenner zur thermischen Regeneration eines Partikelfilters in einem Abgasnachbehandlungssystem eines Verbrennungsmotors, insbesondere Dieselmotors
DE10005376A1 (de) 1999-02-12 2000-08-17 Denso Corp Verbrennungsheizer zur Verwendung in einem Kraftfahrzeug
DE10231883B4 (de) 2002-07-12 2008-01-17 J. Eberspächer GmbH & Co. KG Verdampferanordnung, insbesondere zur Erzeugung eines in einem Reformer zur Wasserstoffgewinnung zersetzbaren Kohlenwasserstoff/Mischmaterial-Gemisches
DE10255361B3 (de) * 2002-11-27 2004-06-17 J. Eberspächer GmbH & Co. KG Brennkammerbaugruppe für ein Heizgerät, insbesondere Fahrzeugheizgerät
DE10325574A1 (de) * 2003-06-05 2004-12-30 J. Eberspächer GmbH & Co. KG Brennkammeranordnung für einen Verdampferbrenner, insbesondere für ein Fahrzeugheizgerät

Also Published As

Publication number Publication date
EP1544543A3 (de) 2008-12-31
PL1544543T3 (pl) 2013-01-31
EP1544543A2 (de) 2005-06-22
DE10360009A1 (de) 2005-07-28

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