EP1275901A2 - Brûleur à vaporisation - Google Patents

Brûleur à vaporisation Download PDF

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Publication number
EP1275901A2
EP1275901A2 EP02014269A EP02014269A EP1275901A2 EP 1275901 A2 EP1275901 A2 EP 1275901A2 EP 02014269 A EP02014269 A EP 02014269A EP 02014269 A EP02014269 A EP 02014269A EP 1275901 A2 EP1275901 A2 EP 1275901A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
heating
fuel
evaporation
combustion chamber
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.)
Granted
Application number
EP02014269A
Other languages
German (de)
English (en)
Other versions
EP1275901A3 (fr
EP1275901B1 (fr
Inventor
Walter Blaschke
Günter Eberspach
Bruno Dr. Lindl
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
Priority claimed from DE2001130638 external-priority patent/DE10130638A1/de
Priority claimed from DE2001136292 external-priority patent/DE10136292A1/de
Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1275901A2 publication Critical patent/EP1275901A2/fr
Publication of EP1275901A3 publication Critical patent/EP1275901A3/fr
Application granted granted Critical
Publication of EP1275901B1 publication Critical patent/EP1275901B1/fr
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
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/06—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners
    • F23Q7/08—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs structurally associated with fluid-fuel burners for evaporating and igniting liquid fuel, e.g. in hurricane lanterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01B—BOILING; BOILING APPARATUS ; EVAPORATION; EVAPORATION APPARATUS
    • B01B1/00—Boiling; Boiling apparatus for physical or chemical purposes ; Evaporation in general
    • B01B1/005—Evaporation for physical or chemical purposes; Evaporation apparatus therefor, e.g. evaporation of liquids for gas phase reactions
    • 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
    • F23D2207/00—Ignition devices associated with burner
    • 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
    • F23D2900/00002—Cleaning burner parts, e.g. burner tips

Definitions

  • the present invention relates to an evaporator burner, such as, for example applies to heaters in motor vehicles application.
  • WO 98/49494 discloses an evaporator burner in which Floor area of a combustion chamber, a porous evaporator medium, for example Nonwoven material is arranged.
  • a porous evaporator medium for example Nonwoven material is arranged.
  • liquid fuel is passed to it by capillary action in the porous evaporator medium to distribute.
  • the fuel evaporates, leaving in the area of Combustion chamber by accumulation of fuel vapor and combustion air an ignitable or combustible mixture is formed.
  • Glühzündux includes. By heating the Glühzünduxs becomes in whose environment generates such a high temperature that in this Area existing ignitable mixture ignites and then in the Area of the combustion chamber which spreads combustion.
  • an evaporator burner which in turn in the bottom region of a combustion chamber provided porous medium for distribution and evaporation of fuel is.
  • a heating coil heating device provided, which in the region of the porous medium when energized the temperatures required to ignite in the range of about 1,100 ° C can lie, can generate.
  • an evaporator burner is to solve this problem provided, comprising an evaporator medium for Feeding fuel vapor into a combustion chamber, a first heater, comprising at least one for igniting in the combustion chamber existing fuel vapor at least with its heating area in the combustion chamber protruding Zündheizelement, and a second heating device, comprising at least one of the evaporator medium for influencing Evaporation heater associated with its vaporization characteristic.
  • the present invention overcomes those of the prior art Disadvantage in that they are used for ignition on the one hand and for Evaporation of the liquid supplied fuel on the other hand, each separate Provides heaters. These may vary in terms of These temperatures to be generated and the required heating capacities each optimally adapted to the requirements placed on these become.
  • preheating the fuel to be evaporated the evaporation rate is increased while still avoiding for this purpose, heat energy is withdrawn from the flame which is spreading out becomes.
  • the flame propagation in the starting phase of such Evaporator burner runs much faster, so that ultimately too the full load operation is achieved much faster than with the out of the Prior art known evaporator burners.
  • the at least one evaporative heating element the only for Preheating of the fuel to be evaporated is used, not the prevailing in the combustion chamber comparatively high temperatures suspend, it can be provided that the at least one evaporation heating element on a side facing away from the combustion chamber side the evaporator medium is arranged. This can be done, for example be obtained that the evaporator medium on an evaporator medium carrier is provided and that the at least one evaporation heating element between the evaporator medium and the evaporator medium carrier is arranged.
  • the evaporator burner according to the invention further a fuel supply passage arrangement for introducing liquid fuel provided in the evaporator medium.
  • the fuel supply channel arrangement for Distribution of the liquid fuel across the evaporator medium is trained. This can be achieved, for example, by the fact that the Brennstoffzu Georgiakanalanowski extract least one annular channel region and / or at least one of a fuel supply line substantially radially outgoing radial channel area in the evaporator medium and / or an evaporator medium carrier.
  • the inventive evaporator burner preferably a Air supply duct arrangement for supplying with the fuel vapor to be burned air in the combustion chamber.
  • the air supply duct arrangement in a combustion chamber delimiting wall at least one towards the combustion chamber having open air inlet opening.
  • the Luftzu 1500kanalan extract At least one Having the evaporator medium open air inlet opening.
  • the Luftzu 1500kanalan extract at least a Heilzu Georgiakanal Scheme passing through the evaporator medium having.
  • the heat dissipation occurring in the area of an evaporator burner can, according to a further advantageous aspect of the present Invention in that the at least one evaporation heating element and the evaporator medium on a ceramic material formed Evaporator medium carriers are provided for improved thermal Isolation and thus a further acceleration of the flame propagation be taken care of.
  • the evaporator medium may comprise porous material for obtaining the fastest possible dissemination of the liquid fuel in the evaporator medium itself and then for the evaporation of the distributed liquid fuel may preferably be formed multi-layered.
  • fleece material can be used.
  • a general problem that occurs in the operation of evaporator burners is the required high variability of the burner output.
  • such evaporator burners with a variety of different fuels or with fuels different quality can be operated.
  • conventional diesel fuel for example in addition to the applicability of conventional diesel fuel of course the usability of winter diesel or Arctic diesel required.
  • evaporation is not always under optimal conditions, such as e.g. optimal evaporation temperature and optimum oxygen supply, takes place.
  • an evaporator burner preferably a cleaning assembly for removal from depositing in the combustion chamber in the combustion mode Deposits.
  • the cleaning arrangement a heating arrangement through which in the region of A combustion chamber in the range or above a combustion temperature of the Deposits lying temperature can be generated.
  • the present invention provides that the heating arrangement for generating the temperature in the range or above the burnup temperature is formed at least in the region of the evaporator medium.
  • this heater also the forms to be used for cleaning heating assembly. Depending if, then a normal evaporation operation or a burn-off operation for cleaning is provided, this heater can then with different Heating power to be operated accordingly different, for the different operating phases to produce suitable temperatures.
  • the present invention relates to a purification process for cleaning a heating burner, in particular one Evaporator burner, as has been described above, at Which method by activating a heating arrangement to deposits a wall surrounding a combustion chamber to a temperature in Area of or above the burning temperature of the deposits heated and be burned down.
  • the cleaning process is then performed when the heating burner is not in a heating mode is. Since in the normal heating mode by the interaction various system components ensure that Fuel and oxygen in a suitable ratio for combustion can be entered, this measure according to the invention can ensure that does not take place during a heating operating state phase Burning off oxygen, which in itself for normal combustion of the injected or vaporized fuel would be required, for Burning of the deposits is used and thus for combustion is no longer available. An impairment of normal operation can thus be avoided.
  • the Cleaning process subsequent to a heating operating state phase of Heating burner is performed.
  • the advantage of this measure is that in the Connection to a normal heating operating state the various System components are already heated so that the to burn off the Impurities or deposits required heating power accordingly can be reduced.
  • the heating arrangement driven with a duty cycle of less than one become.
  • the advantage of this measure is that you get through the clocked Driving the heater in a simple manner, the heating power can regulate, without depending on the available supply voltage to be or to be essentially limited by this.
  • this a drive device by which the heating power at least the second heating device is adjustable, wherein a monitoring module the heating power and / or the required heating power of the second Heating device monitored and based on the monitoring result detects the presence of a fuel vapor.
  • the present invention takes advantage of the fact that in the evaporation of fuel due to the need for evaporation and the energy extracted from the environment in the transition from a state in which there is no evaporation, to a state in which Evaporation is present to maintain the same temperature performance the evaporation supporting heater must be increased. Otherwise, a cooling of the area would occur in the the evaporation takes place.
  • This change in the driving characteristic or required driving characteristic for this heater uses the present invention to recognize when the transition to the vaporization state occurs.
  • the Evaporation heater an electrically operated heating element with at increasing temperature increasing electrical resistance includes.
  • the present invention further relates to a method for monitoring the fuel supply to an evaporator burner, this method in particular in an evaporator burner according to the invention for use can come.
  • This evaporator burner includes one for assistance the fuel evaporation provided heater.
  • Method is based on the heating power of the heater and / or a change in the heating power of the heater and / or a required Changing the heating power of the heater determines whether in one Combustion chamber of the evaporator burner, a fuel evaporation available is.
  • an evaporator burner is disabled, which, for example by deactivating a combustion assist heater and adjusting the fuel supply, it is advantageous to ensure that in the evaporator burner remaining fuel residues be completely ejected. This may preferably be achieved be done that activates a evaporation supporting heater is evaporated and the remaining fuel evaporates. Due to the already described above physical effect that for the production the fuel evaporation energy is required, which by corresponding excitation of the associated heating device provided may be further provided according to the present invention that then, if the heating power or the required heating power of the evaporation supporting heater decreases, it is recognized that no more fuel is available for evaporation anymore.
  • FIGS. 1-5 A first embodiment of an evaporator burner 10 according to the invention is shown in FIGS. 1-5.
  • the evaporator burner 10 comprises an air duct housing 12, which is shown only partially, as well as a burner housing 16 which defines it and essentially a longitudinal central axis L of the evaporator burner 10, as indicated schematically by arrows P 1 in FIG supplied in an air supply area 18 of the air guide housing 12 combustion air.
  • the combustion exhaust gases via a discharge region 20 of the air guide housing 12, as indicated by an arrow P 2 , discharged from the area of the evaporator burner 10.
  • the supply of combustion air or the discharge of the resulting exhaust gases during combustion can be carried out in a conventional manner.
  • a flame tube 22 extending along the longitudinal central axis L of the evaporator burner 10 is provided.
  • the flame tube 22 similar to the burner housing 16 in its axially open region, on the air guide housing 12, namely a front housing plate 24 thereof, set.
  • the flame tube 22 is axially open, so that, as indicated by the arrow P 3 , the exhaust gases resulting during combustion flow into an annular space region 28 formed between the flame tube 22 and the burner housing 16 can.
  • the housing plate 24 has in its lower region a slot-like, approximately over an angular range of 180 ° curved extending outlet opening 30.
  • the flame tube 22 is positioned on the housing plate 24 such that this outlet opening 30 is located outside of the space enclosed by the flame tube 22 space and thus establishes a connection between the annular space 28 and the discharge area 20 of the air guide housing 12.
  • a pot-like molded evaporator medium carrier 32 is attached in the area enclosed by the flame tube 22 space area is at the same side as the flame tube 22 on the housing plate 24 .
  • evaporator medium carrier 32 enclosed space area is the common one arranged with 34 designated evaporator medium, in the illustrated Example comprises two layers 36, 38 of nonwoven material.
  • the nonwoven material situation 36 for example, formed with finer pore structure than the nonwoven material layer 38.
  • At the substantially cylindrical wall area 40 of the evaporator medium carrier 32 includes a ring-shaped, for example, from sheet metal constructed Brennschttingsteil 42 on. This has removed in its from the evaporator medium carrier 32 lying end portion a ring-like Flammblende 44 with central passage opening.
  • a plurality of slot-like and curved air inlet openings 46 are provided on the housing plate 24.
  • the air inlet openings 46 are - in relation to the longitudinal center axis L - in a radial region between the flame tube 22 and the evaporator medium carrier 32.
  • the combustion air can enter via these air inlet openings 46 in an annular space 48, which is formed between the flame tube 22 and the evaporator medium carrier 32 and the adjoining the evaporator medium carrier 32 region of the Brennschdungsteils 42.
  • This annular space 48 is closed axially by the widening contour of the combustion chamber wall part 42, which then rests against the inner circumference of the flame tube 22.
  • the combustion chamber wall part 42 In its approximately cylindrically formed region adjoining the evaporator medium carrier 32, the combustion chamber wall part 42 has a plurality of air passage openings 50, which follow each other in the circumferential direction and, for example, are axially offset. The air which has reached the annular space 48 via the air inlet openings 46 can thus flow through these air passage openings 50 into the combustion chamber 52 enclosed by the combustion chamber wall part 42 into a region which lies close to the surface of the evaporator medium 34.
  • a central, i. the longitudinal central axis L near area has the Bottom region 54 of the evaporator medium carrier 32 has an opening, in which opens a fuel supply line 56.
  • the fuel supply line 56 ends before the evaporator medium 34, i. the floor area 54 near nonwoven material layer 36.
  • the via the fuel line 56 supplied fuel thus occurs in this central area in the nonwoven material layer 36.
  • a disc-like design deflector 58 may be provided, which is the immediate axial entry of the fuel from the nonwoven material layer 36 into the nonwoven material layer 38 in the longitudinal center axis L near area prevented.
  • the bottom portion 54 of the evaporator medium carrier 32 and the two Nonwoven material layers 36, 38 openings 62, 64, 66, 68 are provided. These passes through a Glühzünd21 70 so that he can provide with his the ignition temperatures provided end portion into the combustion chamber 52nd protrudes.
  • evaporator burner 10 thus has two from each other separately trained and also independently operable Heaters on.
  • a first of these includes the Glühzündit 70, while the second heater, the evaporation heater 72nd includes.
  • the evaporator burner 10 in particular in the start state be operated in such a way that by energizing the evaporation heating 72 of the evaporator medium carrier 32 and thus also the be heated on this supported evaporator medium 34.
  • the Heat required for this purpose is essentially the evaporation heating element 72 supplied, and there also by increased evaporation of Fuel distributed over the entire area of the combustion chamber 52 a very good ignitable mixture is a very fast flame spread occur over the entire area of the combustion chamber.
  • FIGS. 1 - 3 illustrated evaporator medium carrier 32 thermally well insulating material, e.g. Ceramic material to provide. Since, as can be seen in particular in Figs. 2 and 3, the at the Rear side of the bottom portion 54 provided evaporation heating 72 in a region 88 of reduced wall thickness of the floor area 54 is still in this area a comparatively good heat transfer to the evaporator medium 34 obtained.
  • the Brennschdungsteil 42 from To provide ceramic material or this possibly also integral with form the evaporator medium carrier 32.
  • combustion chamber wall part 42 for example, as investment casting or sheet metal part be constructed.
  • the evaporation heating element on the evaporator medium 32 on the side to provide which also supports the nonwoven material layer 36, i. the evaporator medium 34, carries. It becomes a very good thermal one in this way Contact generated.
  • FIGS. 1-3 A modification of the embodiment shown in FIGS. 1-3, in particular in the region of the evaporator medium carrier 32, in FIGS. 4 and 5 shown. It can be seen here that in the wall region 40 of the pot-shaped evaporator medium carrier 32 in the circumferential direction distributed more air passage openings 74 are provided. These are thus in an axial region which is covered by the evaporator medium 34 is.
  • the air passage openings 74 open into their radially inner Areas in the evaporator medium 34 a.
  • the over the air passage openings 74 flows from the annular space 48 supplied combustion air So first the evaporator medium 34, is there together with in the Evaporating medium 34 heats accumulated fuel and then enters from the evaporator medium 34 together with the evaporating fuel into the combustion chamber 52. It will thus make the generation easy ignitable mixture of vaporized fuel and combustion air promoted, so that according to an advantageous variant, the air passage openings 74 preferably serve for supplying ignition air. The then in normal combustion state is used or required air continue mainly by the above-mentioned air passage openings 50 supplied.
  • FIG. 6-10 An alternative embodiment of an evaporator burner according to the invention is shown in Figs. 6-10.
  • the basic structure of the evaporator burner 10 with regard to the provision of the air guide region 12 and the evaporator housing 16 corresponds to the structure described above.
  • a clear difference, however, is that now to the flame tube 22 concentrically a radially inner air supply pipe 80 is provided.
  • the evaporator medium carrier 32 is , as seen especially in Fig. 6 and 10, formed like a ring segment.
  • the two nonwoven material layers 36, 38 of the evaporator medium 34 are also ring-shaped and have the openings 66, 68 in the interruption region of the evaporator medium carrier 32.
  • the evaporator medium carrier 32 with the nonwoven material layers 36, 38 carried thereon is arranged surrounding the air supply tube 80 in the bottom region of the combustion chamber 52, so that the nonwoven material layer 38 is again exposed to the combustion chamber 52.
  • the evaporator medium carrier 32 In the surface in contact with the nonwoven material layer 36 has the evaporator medium carrier 32 axially toward the nonwoven material layer 36 open groove-like annular channel 86. In this opens the fuel line 56, so that the supplied via the fuel line 56 fuel through the channel 86 in the circumferential direction over the entire ring-like trained nonwoven material layers 36, 38 can be distributed.
  • the Evaporator medium carrier 32 again a recess 88, in which the for example, again formed by a heating coil or such Heating coil comprehensive evaporation heating element 72 positioned is.
  • Glühzünd21 70 On the housing plate 24 is in a trained use area 90 of the Glühzünd21 70 carried such that it with his for generating high temperature area provided the interrupted area of the Evaporator medium carrier 32 and the openings 66, 68 in the nonwoven material layers 36, 38 interspersed, in one with respect to the longitudinal center line L in the example shown skewed configuration.
  • the free one End region of Glühzünduxs 70 is thus positioned near the area in which when energizing the evaporation heating element 72 a comparatively large amount of fuel by evaporation in the combustion chamber 52 arrives.
  • FIG. 11 An alternative type of fuel supply in this Ausliensart an evaporator burner is shown in Fig. 11.
  • the fuel via the fuel line 56 is not in the axial direction in the Channel 86 is fed, but approximately in a circumferential center region This channel 86 is introduced from radially outside. Due to the introduction into the circumferential center region of this channel 86 can achieve an even better distribution of the supplied fuel become.
  • Fig. 11 in a circumferential direction uninterrupted annular evaporator medium carrier 32 is provided is.
  • passage opening for this in the evaporator medium carrier 32 for the suitable positioning of Glühzündits 70th be taken care of.
  • FIG. 12 Another alternative variant of the fuel supply is shown in FIG. 12. It can be seen here that the fuel line 56 is in the groove-like open channel 86 extends into or extends along it. The fuel line 56 points in the region lying in the channel 86 Openings 94, through which the fuel can then escape and in the nonwoven material layer 36 can enter.
  • the in the variants according to the Fig. 6 - 12 shown approximately annular distribution of the fuel is particularly advantageous in pulse-like fuel supply.
  • suitable selection of the dimension of the openings 94 and the mutual Distance of the same here can influence the distribution characteristic be taken. For example, it is possible in Circumferential direction distributes the openings 94 with changing dimension or to provide varying mutual distance.
  • spacer ribs 96 are provided which the contact surface between the evaporator medium carrier 32 and the housing plate 24 to minimize the Reduce heat transfer.
  • the ring-like formed evaporator medium carrier 32 preferably made of ceramic material or other poorly thermally conductive material formed.
  • FIGS. 13 to 15 Another embodiment of an assembly, which the two heaters or the evaporator medium comprises, is in Figs. 13 to 15 is shown.
  • the structure corresponds approximately to the previous With reference to FIGS. 1-5 described construction with central Fuel supply.
  • an approximately disk-like trained evaporator medium carrier 32 in the central region of the Fuel line 56 opens.
  • the evaporator medium carrier 32 At the nonwoven material layer 36 bearing Side, the evaporator medium carrier 32, the star-shaped radially outside emanating from the junction of the fuel line 56 groove-like channels 60. About this is at the back of the nonwoven material layer 36 increases the supplied fuel over the surface of the Nonwoven material layer 36 distributed.
  • the embodiment variant shown in FIGS. 13-15 can be a form preassembled module, so can pre-assembled the evaporator medium carrier 32, the multi-layered porous evaporator medium, for example 34 and the two heaters, so the Glühzünd21 70 and the evaporation heating element 72 include.
  • This assembly can then in a particularly simple manner in the other Integrated manufacturing process of an evaporator burner according to the invention become.
  • a second heater provides by heating the medium, that both for the distribution and for the evaporation of the fuel contributes, that a high rate of evaporation independent of the flame formation of the fuel is present, for a faster Firing favors and on the other hand an improved flame propagation over the entire combustion chamber result.
  • an evaporator burner has been described in which by providing the evaporation heating element 72, in particular on Start of an operating phase for increased fuel evaporation and thus faster provision of a good ignitable and combustible Mixture of fuel vapor and air can be taken care of.
  • a problem in such evaporator burners is that these generally for A variety of fuels should be used and beyond should have comparatively large Brenner orientalssprektrum. Here can be a ratio of maximum to minimum burner power at about 4: 1 lie.
  • the present invention is characterized by appropriate design of the Verdampfungsheizelements ensured that the deposits forming in the combustion mode, which are themselves flammable, removed at certain times become.
  • the procedure is such that for the evaporation heating a heating element is provided which generate temperatures can lead to the burning off of the deposits. These are temperatures of at least 600 ° C.
  • Is by appropriate energization of the Evaporation heater 72 generates such a high temperature the coke-like deposits were ignited and burned. To this, too can support the blower with which in normal combustion mode the combustion air provided in the combustion chamber 52nd also be put into operation. It can be this way and the oxygen required to burn off the deposits be provided in sufficient quantity.
  • heating elements have so-called Mantelloomleiter proven. These include a ceramic powder embedded Resistance wire. The ceramic powder and this resistance wire are pressed into a heat-resistant steel tube.
  • the essential Advantage of this arrangement is that it is electrically non-conductive and thus even when producing so-called coke bridges no risk of short circuit consists. Furthermore, it is very heat resistant and due to their good deformability optimally adaptable to other components.
  • Heating the evaporation heating element 72 to such high temperatures that also in the area of the combustion chamber 52, in particular in the area the evaporator medium 34 deposits are burned off For example, by monitoring the total operating time of the Evaporator burner 10 are made at certain times. It This can be done more or less periodically in this way be that the entire evaporator burner back to a state is brought, in which this one correct combustion operation can perform. Since during the normal combustion operation of the Provided oxygen for burning the evaporated fuel is needed and thus for burning deposits in the Substantially no oxygen is available according to the present invention Invention preferably proceeded such that the burning the deposits are made at a time in which the evaporator burner 10 is not in an operating condition in which evaporates Fuel is burned. This is preferably done here, that after such an operating phase, the burning off the deposits is carried out. The advantage is that in this Condition different components of the evaporator burner 10 relative are warm. It is thus necessary to carry out the burning electrical power slightly lowered.
  • the evaporation heating element 72 either for a normal evaporation operation or to burn off deposits to use this, this is preferably in a clocked manner and driven with a different duty cycle of one. Depending on whether lower temperatures achieved in the evaporation operation should be obtained or higher temperatures in the burn-off should, the duty cycle can be adjusted accordingly. To this Way is further ensured that the operation of the evaporation heating element 72 substantially independent of the supply voltage becomes. Just the setting of the heating intervals allows easy Setting the heating power.
  • Another advantage of performing a cleaning process in this Operating phase is that generally after switching off an auxiliary heater or an auxiliary heater of the internal combustion engine of a vehicle and the cooling water supplied to this are at operating temperature and thus also by stopping the auxiliary heater, the load on the supply voltage is reduced. Also in this phase of operation are generally the Seat heating, the rear and windscreen heating is no longer in operation be.
  • evaporator burners of the type described above is generally the dosing pump, through which the fuel into the combustion chamber 52 introduced or conveyed to the evaporator medium 34, in terms supervised by their company.
  • the coil current the metering pump are evaluated and it may possibly from it be closed, whether the metering pump is working properly or not. Should however, in the area between dosing pump and combustion chamber, for example a liquid leak may be present, this can only be conditionally recognize the current waveform of a dosing pump coil. Especially would a very precise evaluation of this current waveform a very require complex electronics.
  • According to the present invention therefore provided with the inclusion of the evaporation heating element To obtain information about whether fuel in the combustion chamber 52nd is initiated or not. This will be described below.
  • the present invention makes Benefits of a particular temperature-resistance relationship provided in the bottom region of the combustion chamber 52 Evaporation heater 72.
  • This is in accordance with the principles of the present invention provided as a so-called PTC element. That is, by energizing too Exciting Verdamfungsheizelement 72 has an electrical resistance on, which increases with increasing temperature and in a corresponding manner decreases with decreasing temperature.
  • the evaporator medium 34 to a for Evaporate suitable temperature for example in the range of 400 ° C. are heated, it is by means of a drive device, not shown the evaporation heating element 72 is energized. It is preferred in clocked fashion, i.
  • a voltage is applied to the evaporation heater 72.
  • For temperature detection For example, in the driving device information be laid down about the relationship between the electric Resistance and thus the current flowing at a given voltage electrical Current and the temperature in the area of the evaporation heating element 72 reproduces. It is determined that the current flow is one for the desired temperature expected to flow, so Can gradually increase the heating power by shortening the intervals while which the voltage is applied, can be reduced, i. it will also reduces the duty cycle.
  • the evaporation heating element 72 are operated at a power, the essentially only keeping the temperature constant.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
  • Spray-Type Burners (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Control Of Combustion (AREA)
EP02014269A 2001-06-26 2002-06-26 Brûleur à vaporisation Expired - Lifetime EP1275901B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10130638 2001-06-26
DE2001130638 DE10130638A1 (de) 2001-06-26 2001-06-26 Verdampferbrenner
DE2001136292 DE10136292A1 (de) 2001-07-25 2001-07-25 Verdampferbrenner
DE10136292 2001-07-25

Publications (3)

Publication Number Publication Date
EP1275901A2 true EP1275901A2 (fr) 2003-01-15
EP1275901A3 EP1275901A3 (fr) 2003-10-15
EP1275901B1 EP1275901B1 (fr) 2007-09-05

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Application Number Title Priority Date Filing Date
EP02014269A Expired - Lifetime EP1275901B1 (fr) 2001-06-26 2002-06-26 Brûleur à vaporisation

Country Status (6)

Country Link
US (2) US6726114B2 (fr)
EP (1) EP1275901B1 (fr)
JP (1) JP2003090512A (fr)
CZ (1) CZ305020B6 (fr)
DE (1) DE50210836D1 (fr)
RU (1) RU2287109C2 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1484552A1 (fr) * 2003-06-05 2004-12-08 J. Eberspächer GmbH & Co. KG Chambre de combustion pour un brûleur à vaporisation, en particulier pour le chauffage d'un véhicule
EP1568525A1 (fr) * 2004-02-27 2005-08-31 DBK David + Baader GmbH Chauffage pour une chambre de combustion d'une puissance de chauffage localement variable
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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
DE102014103813A1 (de) * 2014-03-20 2015-09-24 Webasto SE Verdampferbrenneranordnung für ein mobiles, mit flüssigem Brennstoff betriebenes Heizgerät
DE102014117115A1 (de) * 2014-11-23 2016-05-25 Webasto SE Verdampferanordnung
DE102015110828B4 (de) * 2015-07-06 2019-11-28 Webasto SE Poröses Brennstoffaufbereitungselement
CA3019194A1 (fr) 2016-03-30 2017-10-05 Marine Canada Acquisition Inc. Appareil de chauffage de vehicule et commandes associees
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CN106930838B (zh) * 2017-03-16 2018-04-17 北京驰宇空天技术发展有限公司 一种使用航空煤油的航空发动机点火装置及点火方法
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RU183923U1 (ru) * 2018-04-02 2018-10-09 Публичное Акционерное Общество "Одк-Сатурн" Испарительная камера сгорания газотурбинного двигателя
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Publication number Priority date Publication date Assignee Title
EP1484552A1 (fr) * 2003-06-05 2004-12-08 J. Eberspächer GmbH & Co. KG Chambre de combustion pour un brûleur à vaporisation, en particulier pour le chauffage d'un véhicule
EP1568525A1 (fr) * 2004-02-27 2005-08-31 DBK David + Baader GmbH Chauffage pour une chambre de combustion d'une puissance de chauffage localement variable
WO2006056179A1 (fr) * 2004-11-26 2006-06-01 Webasto Ag Sous-ensemble pour un dispositif de chauffage et procede de fabrication dudit sous-ensemble
WO2006060980A1 (fr) * 2004-12-08 2006-06-15 Webasto Ag Dispositif bruleur pour du carburant liquide
DE102005004359A1 (de) * 2005-01-31 2006-08-03 J. Eberspächer GmbH & Co. KG Brennkammergehäuse für einen Verdampferbrenner
RU2310128C1 (ru) * 2005-01-31 2007-11-10 И.Эбершпехер Гмбх Унд Ко.Кг Корпус камеры сгорания для испарительной горелки и узел камеры сгорания
EP2012058A3 (fr) * 2007-07-02 2013-05-22 Eberspächer Climate Control Systems GmbH & Co. KG Appareil de chauffage pour véhicule
EP2538135A2 (fr) 2011-06-21 2012-12-26 J. Eberspächer GmbH & Co. KG Unité d'évaporation, en particulier pour un appareil de chauffage de véhicule
DE102011077891B3 (de) * 2011-06-21 2012-12-06 J. Eberspächer GmbH & Co. KG Verdampferbaugruppe, insbesondere für ein Fahrzeugheizgerät
US9297529B2 (en) 2011-06-21 2016-03-29 Eberspächer Climate Control Systems GmbH & Co. KG Evaporator assembly unit, especially for a vehicle heater
DE102011085076B4 (de) 2011-10-24 2022-07-07 Eberspächer Climate Control Systems GmbH Heizgerät, insbesondere für ein Fahrzeug und Verfahren zum Betreiben eines Heizsystems
CN104566360A (zh) * 2013-10-14 2015-04-29 埃贝斯佩歇气候控制系统有限责任两合公司 用于蒸发器燃烧炉的燃烧室组件的底板组件
CN104566360B (zh) * 2013-10-14 2017-08-29 埃贝斯佩歇气候控制系统有限责任两合公司 用于蒸发器燃烧炉的燃烧室组件的底板组件
US9857081B2 (en) 2013-10-14 2018-01-02 Eberspächer Climate Control Systems GmbH & Co. KG Bottom assembly unit for a combustion chamber assembly unit of a vaporizing burner
CN107614975A (zh) * 2015-06-02 2018-01-19 株式会社三五 蒸发式燃烧器
WO2019219510A1 (fr) * 2018-05-15 2019-11-21 Webasto SE Module d'évaporateur pour appareils mobiles de chauffage
US11530813B2 (en) 2018-05-15 2022-12-20 Webasto SE Evaporator assembly for mobile heating devices
WO2025095916A1 (fr) * 2023-10-31 2025-05-08 Lysak Yaroslav Foyer à combustible liquide automatique

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US20030027090A1 (en) 2003-02-06
JP2003090512A (ja) 2003-03-28
DE50210836D1 (de) 2007-10-18
EP1275901A3 (fr) 2003-10-15
RU2287109C2 (ru) 2006-11-10
US20040173692A1 (en) 2004-09-09
EP1275901B1 (fr) 2007-09-05
US6726114B2 (en) 2004-04-27
US6988885B2 (en) 2006-01-24
CZ305020B6 (cs) 2015-04-01

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