EP1876392B1 - Composant de chambre de combustion pour un appareil de chauffage pour véhicule - Google Patents

Composant de chambre de combustion pour un appareil de chauffage pour véhicule Download PDF

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Publication number
EP1876392B1
EP1876392B1 EP07010095A EP07010095A EP1876392B1 EP 1876392 B1 EP1876392 B1 EP 1876392B1 EP 07010095 A EP07010095 A EP 07010095A EP 07010095 A EP07010095 A EP 07010095A EP 1876392 B1 EP1876392 B1 EP 1876392B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
chamber assembly
depression
fuel supply
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP07010095A
Other languages
German (de)
English (en)
Other versions
EP1876392A3 (fr
EP1876392A2 (fr
Inventor
Michael Humburg
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 EP1876392A2 publication Critical patent/EP1876392A2/fr
Publication of EP1876392A3 publication Critical patent/EP1876392A3/fr
Application granted granted Critical
Publication of EP1876392B1 publication Critical patent/EP1876392B1/fr
Expired - Fee Related 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
    • F23D3/40—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
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2300/00—Pretreatment and supply of liquid fuel
    • F23K2300/20—Supply line arrangements
    • F23K2300/206—Control devices

Definitions

  • the present invention relates to a combustor assembly for a vehicle heater, comprising a combustor shell having a peripheral wall and a bottom wall, and at least two fuel introduction bosses, further comprising a fuel supply conduit assembly for supplying fuel to the fuel introduction bosses.
  • Such a combustion chamber assembly is from the post-published German patent application 10 2005 016 237 known.
  • the Brennscherinleitan arrangements are substantially parallel and approximately tangentially from the peripheral wall of the combustion chamber housing and serve to receive fuel from the Brennstoffzu111 Gustavsantechnische and forward, for example via a contained in the Brennscherinleitan accountsn porous evaporator medium towards a combustion chamber formed in the combustion chamber housing. Further, in at least one of the Brennscherinleitan accounts an ignition device may be provided to start the combustion.
  • the Brennstoffzu111technischsan extract comprises a distribution line which extends substantially between the two Brennscherinleitan accountsn and in which approximately a central feed line opens in the central region.
  • the fuel fed into the distribution line from the main supply line is then distributed via the two distribution line sections emanating from the junction region to the fuel introduction lugs.
  • a combustion chamber assembly or vehicle heater equipped therewith is positioned such that the combustion chamber assembly is in a ground position in which the two fuel introduction shoulders occupy approximately the same elevation in the height direction, meaning that the fuel cell extending between these two fuel introduction approaches
  • Distribution line is positioned approximately horizontally, so will be a constant cross-section of the distribution line provided that the fuel is distributed approximately equally between the two fuel introduction approaches.
  • the distribution line will be inclined accordingly, with the result that the fuel is amplified in the direction of the fuel introduction approach, that will flow into the leading to this distribution line section, which is lower.
  • a combustion chamber assembly in which the fuel supply takes place via a plurality of fuel supply lines which open into different regions thereof.
  • the locations at which the fuel supply lines lead into the combustion chamber assembly or a combustion chamber housing thereof can be selected depending on the installation situation provided for such a device.
  • a combustion chamber assembly for a vehicle heater comprising a combustion chamber housing having a peripheral wall and a bottom wall and at least two Brennscherinleitan arrangementsn, further comprising a Brennstoffzumoltechnische extractors n, the Brennstoffzumoltechnische extractors n, the Brennstoffzumolenice effective depending on their installation position throttle arrangement for position-dependent Distribution of the fuel to be supplied has on the Brennscherinleitan among others.
  • the throttle arrangement By providing the throttle arrangement, a non-uniformity of the fuel distribution, which is primarily induced by the effect of gravity, can be compensated for, for example, tilted installation in a vehicle. It is ensured that, regardless of the installation position, the different fuel introduction approaches can always be supplied with the fuel supply quantity or the respective proportion of the fuel supply quantity provided for this purpose.
  • the throttle arrangement reduces the fuel supply flow cross-section to a fuel injection lug which is positioned lower in the vertical direction in relation to the fuel supply flow cross-section to a fuel introduction lug positioned higher in the height direction.
  • the construction may be such that the fuel supply line arrangement comprises a main supply line and from this to each Brennscherinleitansatz a distribution line section and that the throttle arrangement is adapted to influence the flow-through capacity of the distribution line sections depending on the position.
  • the main supply line may open into a distribution line which provides the two distribution line sections
  • the throttle arrangement may comprise at least one throttle element movable in the distribution line, which in the region of the fuel introduction lugs at substantially the same height position when positioning the combustion chamber assembly Is arranged in the distribution line of the main supply line, such that the fuel to be supplied spreads in an allocated in relation to the base layer basic distribution ratio to the distribution line sections. It is thus ensured that when positioning in the base position, a defined distribution ratio is present, which can then be maintained even when deviating from the basic situation, inclined installation essentially by the action of the at least one movable throttle body.
  • the position-dependent effectiveness of the throttle arrangement can be simple and the manner in which the throttle assembly in the distribution line comprises a sink in which the throttle body is gravity assisted in positioning the combustor assembly in the ground position and out of which the throttle organ is gravity assisted in positioning the combustor assembly in a reclined position the distribution line sections moves.
  • a depression apex portion of the depression may substantially face an orifice of the main supply line into the distribution conduit so that when positioned in the ground position, the restriction assembly is in a neutral position in which it does not substantially affect the distribution of the fuel delivery amount to the distribution conduit portions.
  • the drain may be formed by an extension region of the distribution line.
  • the throttle assembly may be further configured such that the drain has generally linearly extending valley surfaces away from a valley apex region toward the distribution conduit sections; along which the throttle body can move away from or towards the valley apex region.
  • the at least one throttle element will be positioned in the valley vertex area as long as gravity exists, as long as none of the drain areas descend away from the valley vertex area. That is, by the inclination angle of the substantially rectilinearly extending sink surfaces, an angular range can be specified around the base position, in which the throttle arrangement is still ineffective due to the continued positioning of the at least one throttle element in the sink peak area. Upon leaving this angular range, the at least one throttle body will then move out of the valley vertex area and thus cause the flow through of one of the distribution line sections to be reduced.
  • the depression has, from a depression apex region in the direction of the distribution conduit sections, curved depression surfaces along which the throttle body can move away from or towards the depression apex region.
  • this also means that even small deviations from the base position trigger a deflection of the at least one throttle body out of the sink vertex area and thus the beginning of a position-dependent effective flow throttling.
  • the throttle arrangement in the distribution line starting from the sink vertex in the direction of the distribution line sections tapered flow cross-sections, the throttle arrangement can be effective depending on the angle of inclination, ie, the greater the inclination angle with respect to the base layer, the greater can also Be throttling effect.
  • the at least one throttle member may be formed as a rolling element, for example as a ball.
  • the Brennscherinleitan accounts may be provided on the peripheral wall of the combustion chamber housing.
  • the invention further relates to a vehicle heater with an evaporator burner, which has a combustion chamber assembly according to the invention.
  • FIG. 1 is shown in plan view of a inventively constructed combustion chamber assembly 10 for a vehicle heater.
  • a combustion chamber housing 14 which defines a combustion chamber 18 together with a bottom wall 16.
  • the peripheral wall 12 and the bottom wall 16 may form an integral part of the housing 14.
  • the bottom wall 16 is grown as an independent assembly to the peripheral wall 12.
  • the inside of the circumferential wall 12 is lined with porous evaporator medium 20, for example nonwoven, braid, foam ceramic or the like.
  • the two Brennscherinleitan algorithms 22, 24 are preferably at the same axial positioning.
  • the fuel supply line arrangement comprises a distribution line 28 extending essentially between the two fuel introduction lugs 22, 24, which preferably has no further point of contact with the combustion chamber housing 14 between the two fuel introduction lugs 22, 24.
  • a distribution line 28 Approximately in the middle of the distribution line 28 opens a Mannzu900technisch 30, so that the supplied via this Hauptzu920technisch liquid fuel is forwarded after introduction into the distribution line 28 via the two leading to the Brennscherin.leitan accountsn 22 and 24 distribution line sections 32, 34.
  • Fig. 1 the combustion chamber assembly 10 is shown in a base position in which the two Brennscherinleitan accounts 22, 24 occupy substantially the same altitude.
  • the combustion chamber assembly 10 is not in the in Fig. 1 installed basic location, but for example in one in the Fig.
  • the combustion chamber assembly 10 has an effective function in the installation position and in the Fig. 2, 3rd or 5, 6 in detail recognizable throttle assembly 36 available.
  • This throttle arrangement 36 comprises, in the distribution line 28 in the region in which the main supply line 30 opens into this, a depression 38 formed essentially by an extension of the distribution line sections 32, 34.
  • a depression apex region 40 of this depression 38 is positioned so that it essentially opposite a mouth opening 42 of the main supply line 30.
  • the depression 38 has drain surfaces 44, 46 which extend substantially rectilinearly in the direction of the respective distribution line sections 32, 34.
  • An here formed as a ball throttle member 48 is disposed in the distribution line 28 and thus can move in the region of the drain 38 and the distribution line sections 32, 34.
  • the combustion chamber assembly 10 takes the in Fig. 1 recognizable base position with approximately horizontal, ie substantially orthogonal to the vertical line V oriented distribution line 28, so the throttle member 48 is due to gravity position in the valley vertex area 40.
  • the fuel fed into the distribution line 28 through the main supply line 30 and the orifice 42 will spread to the two distribution line sections 32, 34, in the illustrated example in which these two distribution line sections 32, 34 are substantially the same and thus the same Flow resistance, to the same extent.
  • the depth of the sink 38 is selected so that the throttle member 48 is substantially completely contained in this sink, can thus be provided for flow conditions, which would be approximately present even if the distribution line 28 without providing the sink 38 with a constant cross section would be trained.
  • the throttle assembly 36 is not active in a tilt range around the ground position.
  • the throttle body 48 will remain due to gravity in the region of the sink vertex area 40. Only then, when one of the drain surfaces 44 or 46 has exceeded an orthogonal position to the vertical line V and thus falls from the sink peak area 40, the throttle body 48 is in the direction of the in Fig. 5 move recognizable positioning in the respective lower distribution line section 32 or 34 into it. This positioning is maintained at then continuing lingering, even until or at the in Fig. 7 a recognizable positioning, in which the combustion chamber assembly 10 is inclined by 90 ° with respect to the base layer, so that the main supply line 30 extends substantially parallel to a horizontal line H and the distribution line 28 is substantially parallel to the vertical line V.
  • FIG Fig. 8 A modified embodiment of a throttle arrangement 36 is shown in FIG Fig. 8 shown.
  • the sink 38 does not have a straight line extending from the sinker vertex portion 40 extending drain surfaces, but in the direction of the distribution line sections 32, 34 curved extending sink surfaces 44, 46, so that a total of a concave shape of the sink 38 results.
  • an embodiment with a constant radius of curvature R 1 may be provided.
  • the sink 38 in the distribution line 28 is opposite a bulge 54, in which the main supply line 30 opens with its mouth opening 42 substantially centrally.
  • this bulge 54 on both sides of the mouth opening 42 bulging surfaces 56, 58 with convex curvature, for example, a constant radius of curvature R 2nd
  • This radius of curvature R 2 is chosen such that, starting from the valley vertex area 40 or the mouth opening 42 opposite this, the flow cross-section present in the direction of the respective distribution line sections 32, 34 decreases. This can be achieved, for example, in that the radius of curvature R 2 is greater than the radius of curvature R1 or not smaller than the radius of curvature of a Circle concentric with the circle or circle section formed by the sink surfaces 44 'and 46'.
  • the throttle body 48 Starting from its in Fig. 8 recognizable central or neutral positioning in the direction of one of the drain surfaces 44 ', 46', the flow cross section through the converging surfaces 44 'and 56 or 46' and 58 is increasingly lower, so that an increasing inclination of this throttle assembly 36 a corresponding increasing throttling effect.
  • This variation of the throttling effect induced primarily by the variation of the flow cross section continues up to an inclination at which the throttling member 48 moves away from the concave sink surfaces 44 'or 46' and into the regions of the distribution line sections 32, 34 formed with a substantially constant flow cross section can. So while at the in the Fig.
  • the throttle arrangement is so effective that, starting from the base position, in a range of inclination this is initially not effective, when leaving this inclination then passes into a predefined by the existing flow cross sections, but unvariable throttle state, the functionality of in Fig. 8 illustrated embodiment so that starting from the basic position, ie, a neutral state of the throttle assembly 36, first, the throttle effect increases with increasing inclination to a maximum throttle effect and then remains substantially constant when reaching or exceeding a certain maximum inclination.
  • a choke element which is also selected especially for this, could be provided, wherein in the in Fig. 2 or in Fig. 8 recognizable neutral position then the two throttle bodies would be positioned in the sinker vertex area and is to ensure with appropriate slope that only one of the throttle bodies can move in the direction of the respective associated distribution line section, while by another example, pin-like or wall-like retaining element, the other throttle body to a corresponding movement is hindered.
  • This could be advantageous, for example, if, as explained above, the two distribution line sections are already configured in principle with different flow cross-section, so that a larger-sized throttle element could be selected in association with the distribution line section with a larger flow cross-section.
  • the embodiment of the Fig. 8 by asymmetrical configuration of the sink 38 and / or the bulge 54 be ensured that, depending on the direction of inclination, the throttle behavior of the throttle assembly 36 varies differently.

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)
  • Spray-Type Burners (AREA)

Claims (14)

  1. Un module de chambre de combustion pour un appareil de chauffage pour un véhicule, comprenant un boîtier de chambre de combustion (14) avec une paroi circonférentielle (12) et une paroi de fond (16) et au moins deux raccords d'alimentation en combustible (22, 24), comprenant en outre un arrangement de conduits d'alimentation en combustible (26) pour conduire du combustible aux raccords d'alimentation en combustible (22, 24), l'arrangement de conduits d'alimentation en combustible (26) comprenant un arrangement de limitation (36) agissant en fonction de sa position de montage pour distribuer en fonction de cette position le combustible à transporter aux raccords d'alimentation en combustible (22, 24).
  2. Un module de chambre de combustion selon la revendication 1, caractérisé par l'arrangement de limitation (36) réduisant la section d'écoulement vers un raccord de conduit d'alimentation en combustible (24) positionné plus bas comparé à la section d'écoulement vers un raccord de conduit d'alimentation en combustible (22) positionné plus haut dans une direction verticale.
  3. Un module de chambre de combustion selon la revendication 1 ou 2, caractérisé par l'arrangement de conduit d'alimentation en combustible (26) comprenant un conduit d'alimentation principal (30) et une section de conduit de distribution (32, 34) partant de ce dernier et menant à chaque raccord d'alimentation en combustible (22, 24) et par l'arrangement de limitation (36) étant adapté pour influencer la perméabilité des sections de conduit de distribution (32, 34) en fonction de leur position.
  4. Un module de chambre de combustion selon la revendication 3,
    caractérisé par le conduit d'alimentation principal (30) débouchant dans un conduit de distribution (28) comprenant les deux sections de conduit de distribution (32, 34) et par l'arrangement de limitation (36) comprenant au moins un élément de limitation (48) mobile dans le conduit de distribution (28) qui est positionné près de l'embouchure (42) du conduit d'alimentation principal (30) dans le conduit de distribution (28) lorsque le module de chambre de combustion (10) est positionné dans une position de base dans laquelle les raccords d'alimentation en combustible (22, 24) présentent essentiellement le même niveau, de sorte que le combustible à alimenter est distribué aux sections du conduit de distribution (22, 24) dans une proportion de distribution de base associée à la position de base.
  5. Un module de chambre de combustion selon la revendication 4, caractérisé par l'arrangement de limitation (36) dans le conduit de distribution (28) comprenant une concavité (38) où, lorsque le module de chambre de combustion (10) est positionné dans sa position de base, se trouve l'élément de limitation (48) grâce à la gravitation, et d'où, lorsque le module de chambre de combustion (10) est positionné d'une manière inclinée, sort l'élément de limitation (48) pour se déplacer grâce à la gravitation vers une des sections de conduit de distribution (32, 34) positionnée plus bas.
  6. Un module de chambre de combustion selon la revendication 5, caractérisé par un vertex (40) de la concavité (38) étant positionné face à une ouverture d'embouchure (42) du conduit d'alimentation principal (30) menant dans le conduit de distribution (28).
  7. Un module de chambre de combustion selon la revendication 5 ou 6, caractérisé par la concavité (38) étant formée par une zone d'élargissement du conduit de distribution (28).
  8. Un module de chambre de combustion selon une des revendications 5 à 7, caractérisé par la concavité (38) comprenant des surfaces de concavité (44, 46) s'éloignant du vertex (40) de la concavité pour s'étendre d'une manière essentiellement rectiligne vers les sections de conduit de distribution (32, 34), le long desquelles l'élément de limitation (48) peut s'éloigner ou s'approcher du vertex de la concavité (40).
  9. Un module de chambre de combustion selon une des revendications 5 à 7, caractérisé par la concavité (38) comprenant des surfaces de concavité (44', 46') s'éloignant du vertex (40) de la concavité pour s'étendre d'une manière courbée vers les sections de conduit de distribution (32, 34), le long desquelles l'élément de limitation (48) peut s'éloigner ou s'approcher du vertex de la concavité (40).
  10. Un module de chambre de combustion selon la revendication 9, caractérisé par les surfaces de la concavité (44', 46') étant concaves.
  11. Un module de chambre de combustion selon la revendication 9 ou 10, caractérisé par l'arrangement de limitation (36) dans le conduit de distribution (28) comprenant des sections d'écoulement qui se rajeunissent du vertex (40) aux sections de conduit de distribution (32, 34).
  12. Un module de chambre de combustion selon une des revendications 4 à 11, caractérisé par le au moins un élément de limitation (48) ayant la forme d'un rouleau, de préférence d'une boule.
  13. Un module de chambre de combustion selon une des revendications 1 à 12, caractérisé par les raccords d'alimentation en combustible (22, 24) étant prévus à la paroi circonférentielle (12).
  14. Appareil de chauffage pour un véhicule, comprenant un brûleur à évaporation avec un module de chambre de combustion (10) selon une des revendications précédentes.
EP07010095A 2006-07-03 2007-05-21 Composant de chambre de combustion pour un appareil de chauffage pour véhicule Expired - Fee Related EP1876392B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006030614A DE102006030614A1 (de) 2006-07-03 2006-07-03 Brennkammerbaugruppe für ein Fahrzeugheizgerät

Publications (3)

Publication Number Publication Date
EP1876392A2 EP1876392A2 (fr) 2008-01-09
EP1876392A3 EP1876392A3 (fr) 2008-05-28
EP1876392B1 true EP1876392B1 (fr) 2010-05-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07010095A Expired - Fee Related EP1876392B1 (fr) 2006-07-03 2007-05-21 Composant de chambre de combustion pour un appareil de chauffage pour véhicule

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Country Link
EP (1) EP1876392B1 (fr)
DE (2) DE102006030614A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI43819C (fi) * 1962-12-28 1971-06-10 Bahco Ab Laite polttoainesyötön säätämiseksi polttoainekammioon, etenkin autonlämmittimen polttokammioon
FR2612419A1 (fr) * 1987-03-19 1988-09-23 Vidon Jean Pierre Filtre a decolmatage automatique sans vanne
DE19504183A1 (de) * 1995-02-09 1996-08-14 Eberspaecher J Brenner zur thermischen Regeneration eines Partikelfilters in einem Abgasnachbehandlungssystem eines Verbrennungsmotors, insbesondere Dieselmotors
DE10205708B4 (de) * 2002-02-12 2004-09-02 J. Eberspächer GmbH & Co. KG Temperaturgesteuertes Kraftstoffventil, insbesondere für einen kraftstoffbetriebenen Heizbrenner eines Fahrzeugheizsystems
DE10355272A1 (de) * 2003-11-26 2005-06-30 Webasto Ag Mobiles Zusatzheizgerät für Fahrzeuge mit einem Brenner
DE10360009A1 (de) * 2003-12-19 2005-07-28 J. Eberspächer GmbH & Co. KG Brennstoffzuführleitungssystem bei einem Heizgerät, insbesondere Fahrzeugheizgerät
DE102005037622A1 (de) * 2005-08-09 2007-02-15 J. Eberspächer GmbH & Co. KG Fahrzeugheizsystem

Also Published As

Publication number Publication date
EP1876392A3 (fr) 2008-05-28
EP1876392A2 (fr) 2008-01-09
DE102006030614A1 (de) 2008-01-17
DE502007003825D1 (de) 2010-07-01

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