EP3320263A1 - Élément poreux de conditionnement de carburant - Google Patents

Élément poreux de conditionnement de carburant

Info

Publication number
EP3320263A1
EP3320263A1 EP16736777.0A EP16736777A EP3320263A1 EP 3320263 A1 EP3320263 A1 EP 3320263A1 EP 16736777 A EP16736777 A EP 16736777A EP 3320263 A1 EP3320263 A1 EP 3320263A1
Authority
EP
European Patent Office
Prior art keywords
fibers
fuel
porous fuel
processing element
layer
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Withdrawn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
EP16736777.0A
Other languages
German (de)
English (en)
Inventor
Klaus MÖSL
Peter Neidenberger
Volodymyr Ilchenko
Bengt Meier
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 EP3320263A1 publication Critical patent/EP3320263A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • 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
    • F23D2900/05002—Use of porous members to convert liquid fuel into vapor
    • 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 a porous fuel treatment element for an evaporator burner with at least one fiber-formed layer.
  • liquid fuel heaters such as are used in particular as auxiliary heaters or auxiliary heaters in vehicles
  • evaporator burner are used in which the liquid fuel evaporates, then with supplied combustion air to a fuel-air Mixture prepared and then reacted in an exothermic reaction.
  • a liquid fuel of the fuel used which is also used to operate an internal combustion engine of the vehicle, in particular, for example. Diesel, gasoline, ethanol and the like.
  • the liquid fuel is usually first fed to a porous fuel treatment element which serves to store, disperse and vaporize the fuel.
  • a porous fuel treatment element which serves to store, disperse and vaporize the fuel.
  • a plurality of porous fuel treatment elements may be provided which are each adapted to these different functions.
  • WO 2012/155897 A1 describes an evaporator arrangement for an evaporator burner for a mobile heater, in which an evaporator body has at least one layer of a metal fabric of interwoven metal wires. It is further described to provide a multi-layered structure using e.g. a layer of a metal fabric is combined with another layer of a metal fleece.
  • the porous fuel processing element for an evaporator burner has at least one layer formed of fibers.
  • the fibers have basalt fibers.
  • the fibers of the at least one layer may in particular be formed by basalt fibers, for example.
  • basalt fibers for example.
  • the entire fuel treatment element may be formed of basalt fibers or at least be formed of one or more layers having basalt fibers.
  • the porous fuel conditioning element additionally to have one or more layers which contain no basalt fibers.
  • Basalt fibers in this application have distinct advantages over conventional fibrous materials used for porous fuel treatment elements. As compared to, for example, glass fibers or asbestos fibers, basalt fibers have superior physical, mechanical and chemical properties with respect to use in a porous fuel processing element. Basalt fibers are a very strong, yet flexible fiber material, which is particularly easy to form into textile fabrics, in particular a felt, a fleece, a needle mat, a scrim, a woven fabric, a knitted fabric, a knitted fabric or a braid can process. The material is particularly suitable for evaporator burners, which are designed for very high operating temperatures, since basalt fibers have an extremely high temperature resistance, especially in comparison to conventional materials, in particular metal fleeces and metal fabrics. Furthermore, a very low tendency for deposit formation is achieved and it can still provide a high storage or buffering effect
  • liquid fuel can be provided. Furthermore, it is a very inexpensive and harmless material.
  • the at least one layer comprises a textile fabric, in particular a felt, a fleece, a needle mat, a scrim, a woven fabric, a knitted fabric, a knitted fabric or a braid.
  • the properties of the fuel processing element can be specified in a very targeted manner by the selection of the textile fabric.
  • the fibers of the textile fabric have a diameter distribution in the range between 5 ⁇ and 35 ⁇ . In this case, a very well-defined distribution of the diameter of the fibers is given, so that the properties of the fuel processing element can be adjusted specifically. Furthermore, it is reliably ensured with such a well-defined diameter distribution that no health risks are associated with the handling of the fibers.
  • the fibers have a length of at least 150 ⁇ , preferably a length of at least 200 ⁇ , health hazards in handling can be excluded particularly reliable.
  • the basalt fibers can be present in the porous fuel preparation selement particularly preferably as so-called endless fibers with a very large length, which can be produced technically in a known manner.
  • the porous fuel treatment element may have at least one layer of basalt wool.
  • the aforesaid at least one layer may comprise basalt wool or it may be e.g. but also be provided in addition one or more other layers that have basalt wool or are formed from basalt wool.
  • the use of basalt wool allows a particularly cost-effective production.
  • the porous fuel treatment element has at least one further layer formed from fibers.
  • the fibers of the at least one further layer may preferably also comprise basalt fibers.
  • a particularly advantageous, in particular temperature-resistant, design is given.
  • the at least one further layer it is e.g. however, it is also possible for the at least one further layer to comprise other fibers, e.g. in particular metal fibers or metal wires.
  • the fibers of the at least one layer have a glassy, amorphous structure.
  • the fibers of the at least one layer are sintered together. In this case, a particularly robust and dimensionally stable realization of the fuel treatment element is possible, which in turn allows easy handling during assembly of the evaporator burner. Furthermore, in this case can be dispensed with an additional separate support structure, which would cause further costs and labor.
  • the fibers are formed by fiber bundles, multifilaments and / or rovings.
  • the object is also achieved by an evaporator burner for a mobile fuel heater operated with liquid fuel with such a porous fuel treatment element.
  • the object is also achieved by a heater with an evaporator burner, which has such a porous fuel processing element.
  • FIG. 1 is a schematic illustration of a portion of an evaporator combustor having a porous fuel treatment element in a mobile fuel-fired heater according to an embodiment
  • Fig. 2 a is a schematic representation of an evaporator receptacle with a
  • Fig. 2 b is a schematic representation of an evaporator receptacle with a
  • Fig. 3 a is a schematic representation of an evaporator receptacle with a
  • a fuel processing element according to a third modification of the embodiment.
  • Fig. 3 b is a schematic representation of an evaporator receptacle with a
  • a fuel processing element according to a fourth modification of the embodiment.
  • Fig. 3 c is a schematic representation of an evaporator receptacle with a
  • a fuel processing element according to a fifth modification of the embodiment.
  • FIG. 4 is a view of a fuel processing element according to a first embodiment
  • FIG. 5 is a view of a fuel processing element according to a second
  • Fig. 6 a) - g) are schematic representations of various textile fabrics, as which the fuel processing element can be realized.
  • Fig. 7 is a schematic exploded view for explaining the arrangement of the fuel processing element in an evaporator receptacle.
  • Fig. 8 is a schematic exploded view for explaining the arrangement of the fuel processing element in the evaporator receptacle in a
  • FIG. 1 schematically shows a region of an evaporator receptacle 2 and a burner cap 3 of an evaporator burner 1 for a mobile heating appliance.
  • Fig. 1 is a schematic representation in a plane containing a main axis Z of the evaporator burner.
  • the evaporator burner can, 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 an auxiliary heater or a heater.
  • the evaporator burner 1 is designed in particular to implement in a combustion chamber 4, a mixture of vaporized fuel and combustion air, so a fuel-air mixture, releasing heat.
  • the reaction can be carried out in particular in a flaming combustion, but a partial or fully catalytic conversion is also possible.
  • 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, etc. are not shown in the schematic representation of FIG. These components are well known and well described in the art.
  • the evaporator burner 1 has an evaporator receptacle 2, in which a porous fuel treatment element 5 is arranged.
  • the evaporator receptacle 2 has in the embodiment on a substantially cup-shaped shape.
  • the fuel conditioning element 5 is received in the pot-like depression of the evaporator receptacle 2 and in particular can be held firmly in this, for example by welding, soldering, jamming or with the aid of a suitable securing element.
  • the design of the fuel processing element 5 will be described in more detail below.
  • a fuel supply line 6 for supplying liquid fuel to the fuel preparation element 5 is provided.
  • the fuel supply line 6 opens into the evaporator receptacle 2 and communicates with a (not shown) fuel delivery device, via which liquid fuel can be conveyed through the fuel supply line 6 to a predetermined extent, as shown schematically by an arrow F.
  • the fuel supply line 6 is, e.g. by welding or soldering, firmly connected to the evaporator receptacle 2.
  • the combustion chamber 4 is circumferentially bounded by a combustion chamber 7, e.g. may be formed by a substantially cylindrical member made of a temperature-resistant steel.
  • the combustion chamber 7 is provided with a plurality of holes 7a, via which combustion air can be fed into the combustion chamber 4, as shown schematically in FIG. 1 by arrows.
  • the holes 7a are part of a combustion air supply L, is supplied via the combustion air to a side facing away from the fuel supply line 6 side of the fuel processing element 5.
  • the evaporator burner 1 is designed such that liquid fuel can be supplied to the fuel processing element 5 via the fuel supply line 6 during operation.
  • the Brennstoffaufleung selement 5 has a substantially circular cross-sectional shape, in the center of which the main axis Z of the evaporator burner 1 extends.
  • the fuel processing element 5 may also have other cross-sectional shapes.
  • the evaporator burner 1 is designed such that in the fuel processing element 5 and at its surface evaporation or evaporation of the liquid fuel takes place and the vaporized fuel only at the exit from the fuel processing element 5, ie combustion chamber side, with the supplied combustion air to a fuel-air - Mixture is mixed.
  • the supply of liquid fuel and combustion air thus takes place on different sides of the fuel processing element 5.
  • the implementation of the fuel-air mixture in an exothermic reaction does not take place in the fuel treatment element 5, but in the downstream combustion chamber 4.
  • liquid fuel and fuel vapor are present in the fuel processing element 5 during operation of the evaporator burner 1 and, due to the evaporation or evaporation process, any initially existing air is expelled from the fuel processing element 5.
  • the fuel conditioning element 5 has a construction with a plurality of functional regions, which in the example shown concretely comprises a first region B1 and a second region B2 having one of the structure in the first region B. 1 divergent structure is divided.
  • the second region B2 is arranged in the embodiment of the fuel supply line 6 facing and the first region B 1 is arranged facing the combustion chamber 4.
  • the fuel conditioning element 5 does not have a plurality of different functional regions, but only a first region B1 is given.
  • the fuel conditioning element 5 has a stepped design with a total of three regions B 1, B 2, B 3 and the evaporator receptacle 2 is designed accordingly.
  • the different areas B 1, B 2, B 3 can be designed specifically with regard to different functions of the fuel conditioning element 5.
  • the second region B2 may be optimized for fuel delivery via capillary forces and fuel buffering
  • the third region B3 may be optimized for lateral distribution of fuel and serve as tolerance compensation
  • the first region B1 may be fuel vaporized Be optimized or fuel evaporation.
  • the different areas B 1, B 2, B 3 can in this case in particular they differ from each other in their structure, structure, material and / or thickness, etc.
  • FIGS. 3 a, 3 b and 3 c Further possible embodiments of fuel treatment elements 5 with a plurality of functional areas B 1, B 2, B 3 are shown schematically in FIGS. 3 a, 3 b and 3 c. Although in FIGS. 3a, 3b and 3c, the fuel supply line 6 and other components are not shown again, it is understood that these other components are also present in these other modifications.
  • the structure of the fuel processing element 5, as it can be used in the embodiment and the modifications described above, will be described in more detail.
  • the embodiment described below can be used for each of the individual areas B 1, B 2 and B 3, in particular e.g. even in cases where only one such area exists.
  • the layer 8 shows a layer 8 formed of fibers 10 of a porous fuel treatment element 5 according to a first embodiment.
  • the layer 8 is formed in the embodiment of a fabric whose fibers have 10 basalt fibers.
  • the fabric is formed in particular from basalt fibers which are woven together.
  • these may also be formed, for example, from such a fabric.
  • the fibers 10 within the layer 8 formed may also be fiber bundles, multifilaments or rovings.
  • 5 shows a layer 8 formed of fibers 10 of a porous fuel treatment element 5 according to a second embodiment.
  • the sheet 8 is formed in the second embodiment as a nonwoven fabric having basalt fibers.
  • the nonwoven is formed in particular from basalt fibers.
  • the porous fuel treatment element 5 has one or more further layers 9, these may also be formed, for example, from such a nonwoven.
  • one or more layers may also be formed as a textile fabric in a porous fuel treatment element 5, as will generally be described below with reference to FIGS. 6 a) to 6 g). It should be noted that, in particular, any desired combinations of such textile fabrics can be used in a porous fuel treatment element.
  • FIGS. 6 a) to g Various realizations of the at least one layer 8 (or possibly also the further layer 9) of the porous fuel treatment element 5 are shown in FIGS. 6 a) to g).
  • the various implementations have the common feature that the fibers 10 each have base fibers.
  • the fibers 10 may each be formed by basalt fibers.
  • Fig. 6a is a schematic representation of a web as a textile fabric for the layer 8 or 9, as has also been described with reference to FIG. 5.
  • Fig. 6b is a schematic representation of an alternative in which the textile fabric for the layer 8 or 9 is formed by a felt.
  • FIG. 6c is a schematic representation of a textile fabric formed as a fabric of basalt fibers for the layer 8 or 9, as was also described with reference to FIG. 4.
  • Fig. 6d shows schematically a formation of the layer 8 or 9 as a knit.
  • Fig. 6e shows schematically a formation of the layer 8 or 9 as a braid.
  • Fig. 6f shows schematically a formation of the layer 8 or 9 as a knitted fabric.
  • Fig. 6g shows schematically a formation of the layer 8 or 9 as a scrim.
  • the various fabrics described with reference to FIGS. 6 a) to 6 g) can be combined with one another in almost any desired manner in a porous fuel treatment element 5.
  • the fibers 10, ie the basalt fibers in the specific embodiment have a very narrow diameter distribution with diameters in the range between 5 ⁇ and 35 ⁇ and the fibers 10 each have a length greater than 150 ⁇ , Favor greater than 200 ⁇ have.
  • the fibers 10 in this case for example, be designed as so-called continuous fibers.
  • the fibers 10 have an amorphous, glassy structure.
  • the surface of the fibers 10 may be treated with a size during manufacture to achieve improved machinability.
  • the layer 8 or 9 may also comprise basalt wool, which enables a particularly cost-effective production.
  • the integration of the previously described fuel conditioning element 5 with at least one layer 8 or 9, which comprises basalt fibers, into an evaporator assembly of an evaporator burner 1 will be briefly described below with reference to the schematic exploded view in FIG.
  • the previously described fuel treatment element 5 is inserted into the pot-like depression of the evaporator receptacle 2.
  • a support structure 11 is applied to the combustion chamber side of the fuel treatment element 5, which is e.g. In particular, may be formed by a temperature-resistant metal mesh or metal fabric.
  • the retaining ring 12 may be formed in particular in a conventional manner as a snap ring, which is jammed or caulked to the evaporator receptacle 2, or it can eg a connection of the retaining ring 12 with the evaporator receptacle 2 by welding or soldering done.
  • the evaporator assembly formed in this way can then be integrated into the evaporator burner 1 in a simple manner.
  • the mechanical stability of the porous treatment element 5 is increased by bonding the fibers 10 together by sintering.
  • the sintering can eg by a purely thermal process, in which the formation of the compound takes place only by providing an elevated temperature and, if appropriate, additional compression of the fibers 10.
  • this modification achieves an increased mechanical stability of the fuel conditioning element 5, so that the additional support structure 11 can be dispensed with in the construction of the evaporator assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
  • Knitting Of Fabric (AREA)
  • Nonwoven Fabrics (AREA)
  • Woven Fabrics (AREA)

Abstract

La présente invention concerne un élément poreux de conditionnement de carburant pour un brûleur à évaporation, comprenant au moins une couche (8) formée de fibres (10). Lesdites fibres (10) comprennent des fibres de basalte.
EP16736777.0A 2015-07-06 2016-06-14 Élément poreux de conditionnement de carburant Withdrawn EP3320263A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015110828.3A DE102015110828B4 (de) 2015-07-06 2015-07-06 Poröses Brennstoffaufbereitungselement
PCT/DE2016/100269 WO2017005240A1 (fr) 2015-07-06 2016-06-14 Élément poreux de conditionnement de carburant

Publications (1)

Publication Number Publication Date
EP3320263A1 true EP3320263A1 (fr) 2018-05-16

Family

ID=56403930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16736777.0A Withdrawn EP3320263A1 (fr) 2015-07-06 2016-06-14 Élément poreux de conditionnement de carburant

Country Status (8)

Country Link
US (1) US20180202651A1 (fr)
EP (1) EP3320263A1 (fr)
JP (1) JP6751899B2 (fr)
KR (1) KR102171137B1 (fr)
CN (1) CN107850297B (fr)
DE (1) DE102015110828B4 (fr)
RU (1) RU2683006C1 (fr)
WO (1) WO2017005240A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017131181A1 (de) * 2017-12-22 2019-06-27 Webasto SE Verdampferbaugruppe insbesondere für ein brennstoffbetriebenes Fahrzeugheizgerät

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245459A (en) * 1963-03-01 1966-04-12 Engelhard Ind Inc Catalytic heater and catalyst therefor
US3784353A (en) * 1972-01-28 1974-01-08 G Chapurin Flameless gas catalytic heater
US4199336A (en) * 1978-09-25 1980-04-22 Corning Glass Works Method for making basalt glass ceramic fibers
JPH0396521U (fr) * 1990-01-12 1991-10-02
BE1012976A3 (nl) * 1998-03-18 2001-07-03 Bekaert Sa Nv Dunne heterogene breistof omvattende metaalvezels.
JP2002234949A (ja) * 2001-02-08 2002-08-23 Lignyte Co Ltd 耐熱成形体
US6726114B2 (en) * 2001-06-26 2004-04-27 J. Eberspacher Gmbh & Co., Kg Evaporative burner
DE10209967C5 (de) * 2002-03-07 2009-01-29 J. Eberspächer GmbH & Co. KG Verdampferelement für einen Verdampferbrenner
JP2005226920A (ja) * 2004-02-12 2005-08-25 North Techno Research Kk 多孔質エレメントを用いた液体燃料の燃焼装置
DE102005004359A1 (de) * 2005-01-31 2006-08-03 J. Eberspächer GmbH & Co. KG Brennkammergehäuse für einen Verdampferbrenner
CZ2008109A3 (cs) * 2008-02-25 2008-04-23 Sieger@Ladislav Knot z nehorlavého materiálu
DE102008031083B4 (de) * 2008-07-01 2015-01-22 Eberspächer Climate Control Systems GmbH & Co. KG Verdampferbaugruppe für einen Verdampferbrenner eines Heizgerätes, insbesondere für ein Fahrzeug
DE102011050025A1 (de) * 2011-04-30 2012-10-31 Webasto Ag Verdampferbrenner für ein mobiles Heizgerät
DE102011050368A1 (de) * 2011-05-15 2012-11-15 Webasto Ag Verdampferanordnung
NL2007646C2 (en) * 2011-09-16 2013-03-19 Micro Turbine Technology B V Braided burner for premixed gas-phase combustion.
US8894862B2 (en) * 2012-02-07 2014-11-25 Walden Ventures, Llc Controlled in-situ burning of oil using wicking material
US20140154636A1 (en) * 2012-03-15 2014-06-05 Robert Thompson Method and apparatus for generating graphic images with fire
DE102013220654B4 (de) * 2013-10-14 2023-10-19 Eberspächer Climate Control Systems GmbH Brennkammerbaugruppe für einen Verdampferbrenner

Also Published As

Publication number Publication date
DE102015110828A1 (de) 2017-01-12
CN107850297A (zh) 2018-03-27
US20180202651A1 (en) 2018-07-19
DE102015110828B4 (de) 2019-11-28
CN107850297B (zh) 2020-06-05
JP6751899B2 (ja) 2020-09-09
KR102171137B1 (ko) 2020-10-28
JP2018523080A (ja) 2018-08-16
RU2683006C1 (ru) 2019-03-25
WO2017005240A1 (fr) 2017-01-12
KR20180021162A (ko) 2018-02-28

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