EP1363071A1 - Brûleur pour appareil de chauffage - Google Patents

Brûleur pour appareil de chauffage Download PDF

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Publication number
EP1363071A1
EP1363071A1 EP03009959A EP03009959A EP1363071A1 EP 1363071 A1 EP1363071 A1 EP 1363071A1 EP 03009959 A EP03009959 A EP 03009959A EP 03009959 A EP03009959 A EP 03009959A EP 1363071 A1 EP1363071 A1 EP 1363071A1
Authority
EP
European Patent Office
Prior art keywords
baffle plate
cooling air
air supply
combustion chamber
burner according
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Withdrawn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
EP03009959A
Other languages
German (de)
English (en)
Inventor
Edgar Miesterfeldt
Steffen Weber
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 Thermosysteme GmbH
Webasto Thermosysteme International GmbH
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 Thermosysteme GmbH, Webasto Thermosysteme International GmbH filed Critical Webasto Thermosysteme GmbH
Publication of EP1363071A1 publication Critical patent/EP1363071A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/404—Flame tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/408—Flow influencing devices in the air tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2214/00—Cooling
    • 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
    • F23D2900/11401—Flame intercepting baffles forming part of burner head

Definitions

  • the invention relates to a burner for a mobile heater with a Primary combustion air supply to a combustion chamber in the area of a flame a baffle plate for accumulating the heat is arranged in the combustion chamber. Furthermore, the invention relates to a mobile heater for a vehicle with a such burner.
  • Baffles are used in burners of the type mentioned above, so that in Heat accumulated in the combustion chamber and thereby the size (especially the Length) of the combustion chamber can be reduced overall.
  • the baffle plate a flow obstacle that is generally transverse to the main flow direction of combustion air or fuel gases is arranged.
  • DE 42 18 629 A1 describes a combustion chamber, in particular for one Particulate filter regeneration in a motor vehicle exhaust system known in which A baffle plate is arranged inside the combustion chamber.
  • the baffle will red-hot during operation and therefore acts as a glow or ignition element.
  • On the combustion chamber is also a second combustion air supply device provided that in the flow direction of the fuel gases far behind the baffle further combustion air is directed tangentially into the combustion chamber in order to particularly homogeneous formation of the mixture of fuel and To achieve combustion air.
  • DE 33 41 305 A1 discloses a gasification oil burner with a baffle plate, which are arranged at the end of a flame tube and for generating a heat build-up is provided. With the gasification oil burner, secondary combustion air is in Direction of flow of the fuel gases far in front of the baffle plate into the flame tube initiated.
  • a burner head is also known from DE 36 18 987 A1, in which a baffle plate is arranged at the end of a flame tube to shorten the flame. Far ahead Secondary combustion air openings are provided on the baffle plate.
  • the baffle and their holder are made of a heat-resistant metal or ceramic.
  • Known baffles are created by the combustion Heat heated to temperatures from 1100 to 1300 ° C. With these Temperatures decrease the strength of metallic materials and corrosion favored. Known metallic baffles therefore deform in part and / or oxidize. Such sustained damage to the material of the Baffle plate can cause the burner to fail. With strongly cyclical Operating the burner with short heating and cooling phases will have this effect strengthened. Only through the use of highly heat-resistant materials, which at the same time are resistant to high temperature corrosion, can be known Burners can achieve the required baffle life. Such Materials lead to high costs for the baffle plate.
  • the invention has for its object to avoid the disadvantages mentioned and in particular a heater with a burner described at the beginning create, the baffle plate is cheaper to manufacture.
  • This object is achieved with a burner mentioned at the outset, in which a cooling air supply is provided in addition to the primary combustion air supply, with which air can flow against the baffle plate and be cooled.
  • the task is also a mobile heater for a vehicle with such Burner released.
  • baffle plate temperature lowered. Because of the lower achieved in this way The temperature of the baffle plate is cheaper, even when used Materials whose strength is higher and their corrosion reduced. So that's it Service life of the baffle plate according to the invention longer than that of conventional ones Paddle. Inexpensive material can be used for baffle plates according to the invention be used, which is also more cost-effective in processing is.
  • the strength of the cooling of the baffle can according to the invention by the pro Unit of time supplied amount of cooling air and by their temperature at Feed set and thus targeted a desired maximum temperature of the Baffle plate are ensured.
  • This maximum temperature can be just as high be chosen so that the baffle can still act as an ignition device.
  • the baffle plate is at a temperature between about 950 ° C and Cooled down to 1000 ° C.
  • the cooling air can be guided through closed, for example in Cross-section round or rectangular channels or through open, for example in Cross-section made of U-shaped or L-shaped channels.
  • the baffle plate is in the Essentially circular or the combustion chamber essentially circular cylindrical designed and with the cooling air supply, the air is essentially radial to Baffle plate supplied.
  • This type of air supply enables short Flow paths of the cooling air in the combustion chamber and therefore leads to only one relatively little heating of the cooling air by the combustion gases.
  • the baffle plate can be essentially circular or the combustion chamber be designed essentially circular cylindrical and with the cooling air supply Air is supplied essentially tangentially to the baffle plate.
  • the tangential Air flow leads to a particularly intensive cooling of the edge of the Baffle plate, while in the center of the baffle plate a relatively hot one Zone remains, which can be used for example to ignite a flame.
  • a particularly strong cooling is advantageously achieved by using Cooling air supply the cooling air is directed directly over the baffle plate.
  • the cooling according to the invention can thereby be advantageous be further developed that the baffle plate from the primary combustion air supply has facing away from the back and with the cooling air supply to the cooling air Back of the baffle is directed.
  • the cooling of the baffle affects with such a design, the flame does not form in the direction of flow the baffle plate. Furthermore, the cooling air becomes less of the main flow of the Combustion gases are torn away because they are in the "slipstream" of the baffle and their mounting feet.
  • the Cooling air supply is the amount of cooling air supplied per unit of time especially varied over the surface of the baffle plate.
  • the baffle can be cooled more in certain surface areas. In this way can also be a relatively uniform temperature over the surface be achieved. This is particularly advantageous if the baffle plate is not as Ignition element should act.
  • the cooling air should be used with the cooling air supply can be fed to the baffle plate simultaneously from several directions.
  • the number of partial cooling air flows is variable.
  • cooling air supply with a cooling air supply Swirl is conducted over the surface of the baffle plate. In this way, the Homogeneity and intensity of the cooling of the baffle plate also improved become.
  • cooling air supply according to the invention can be advantageous at the same time Secondary combustion air for the flame can be fed into the combustion chamber. On this way, one (with only a single additional air supply device) staged combustion with primary and secondary combustion air are generated while at the same time the baffle plate can be cooled and its temperature can be reduced.
  • the all the cooling air is advantageously blown into the combustion chamber, that it first cools the baffle plate and then the entire amount of cooling air supplied per unit of time as secondary combustion air in the Combustion chamber is used. This means that almost all of the combustion Oxygen of the cooling air for the oxidation of carbon in the fuel is being used.
  • Fig. 1 is a flame tube 10 of a burner, not shown mobile heater for a vehicle auxiliary heater in longitudinal section illustrated.
  • the flame tube 10 is circular cylindrical along an axis 12 designs and delimits a combustion chamber 14 in its interior.
  • combustion chamber 14 is located on the left in relation to FIG. 1 Not shown nozzle body of the burner, which is used as an atomizing burner is trained.
  • Liquid fuel is blown in at the nozzle body and from primary combustion air carried away.
  • the fuel atomizes at the nozzle assembly, is ignited there and flows as fuel gas along one illustrated by arrows 16 in FIG. 1 Main flow direction in the flame tube 10 along the axis 12 of the based on Fig. 1 left side to the right side.
  • the flame tube 10 is transverse to the axis 12 and substantially transverse to Main flow direction 16 with a substantially circular baffle plate 18 Using three or four mounting feet 18 (two of which are shown) on the inner surface of the flame tube 10 attached.
  • the baffle plate 18 is used for Accumulation of the fuel gases and the heat carried therein in the flame tube 10. Because of this heat-accumulating effect of the baffle plate 18, this can Flame tube 10 and thus the burner as a whole in the direction of axis 12 be relatively short.
  • a cooling air supply 22 is provided with which the baffle plate is related to it on Fig. 1 right side, i.e. on its back 24, cooling air flows against it can be.
  • the cooling air supply 22 leads to a during operation of the burner Reduction of the temperature of the baffle plate 18 compared to baffle plates conventional burner.
  • the cooling air supply 22 is formed with openings 26 that extend over the circumference the inner circumferential surface of the flame tube 10 distributed on a circle are.
  • the openings 26 are based on FIG. 1 on the right side of the Baffle plate 18 so that the cooling air supplied through the openings 26 immediately is directed to the rear 24 of the baffle plate 18.
  • air guide channels are connected, in the cooling air from a (also not shown) combustion air supply to the Heater is supplied.
  • the combustion air supply is usually with a Combustion air blower provided, that also for supplying the primary air to the nozzle body serves.
  • the shape of the openings 26 is designed with air guiding surfaces such that the cooling air through the flame tube 10 in the radial flow direction 28 is directed towards the center of the baffle plate 10 (see FIG. 2). To this In this way, the center of the baffle plate is proportionate to its edge strongly cooled because 18 turbulence forms in the slipstream of the baffle plate.
  • FIG. 3 An embodiment is illustrated in FIG. 3, in which air guiding surfaces on the Openings 26 and are provided on the associated air duct, which the cooling air in a tangential flow direction 30 to the baffle plate 18 to lead.
  • This type of flow to the baffle plate leads to a swirl 32 cooling air on the rear 24 of the baffle plate 18. Due to the swirl 32 the cooling air remains on the rear side 24 for a relatively long time, so that comparatively much thermal energy from the baffle plate 18 to the cooling air transforms.
  • the cooling air supply 22 is at the same time due to the arrangement of the openings 26 designed that the supplied air as secondary combustion air for the in the Combustion chamber 14 serves a burning flame. This leads to an effective and at the same time low-pollutant oxidation of the carbons present in the fuel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Spray-Type Burners (AREA)
EP03009959A 2002-05-14 2003-04-30 Brûleur pour appareil de chauffage Withdrawn EP1363071A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002121495 DE10221495B4 (de) 2002-05-14 2002-05-14 Brenner für ein Heizgerät
DE10221495 2002-05-14

Publications (1)

Publication Number Publication Date
EP1363071A1 true EP1363071A1 (fr) 2003-11-19

Family

ID=29265293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03009959A Withdrawn EP1363071A1 (fr) 2002-05-14 2003-04-30 Brûleur pour appareil de chauffage

Country Status (3)

Country Link
EP (1) EP1363071A1 (fr)
JP (1) JP4110290B2 (fr)
DE (1) DE10221495B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021140094A1 (fr) * 2020-01-10 2021-07-15 Webasto SE Bruleur et dispositif de chauffage mobile

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004016333B4 (de) * 2004-04-02 2006-08-31 Webasto Ag Heizgeräte-Brenner mit einer Prallscheibe
DE102004033618B4 (de) * 2004-07-12 2016-11-03 Webasto Ag Fahrzeugheizgerät
DE102004034868B4 (de) * 2004-07-19 2008-09-25 Webasto Ag Brenner für ein Heizgerät
US8307954B2 (en) 2007-09-05 2012-11-13 Kimori Limited Caliper brake attachment tool for rear wheel of bicycle
CN105526587A (zh) * 2016-02-01 2016-04-27 湖南惠同新材料股份有限公司 燃烧机的混气装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501777A1 (de) * 1965-07-30 1969-11-27 American Air Filter Co Verbrennungskammer fuer Heizvorrichtungen,insbesondere fuer Lufterhitzer
DE1551728A1 (de) * 1967-12-19 1970-04-16 Shell Int Research Brennerkopf
EP0003000A1 (fr) * 1977-12-23 1979-07-11 Fascione, Pietro Tête de combustion destinée à une chambre de combustion
JPS6138316A (ja) * 1984-07-30 1986-02-24 Sanyo Electric Co Ltd 液体燃料燃焼装置
DE3618987A1 (de) * 1986-06-05 1987-12-10 Walter Swoboda Verbrennungsverfahren
DE4218629A1 (de) * 1992-06-05 1993-12-16 Eberspaecher J Brennkammer, insbesondere für die Partikelfilterregenerierung in einer Kraftfahrzeug-Abgasanlage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257396B (de) * 1962-10-04 1967-12-28 Eberspaecher J Mit fluessigem Brennstoff betriebener Zerstaeuberbrenner, insbesondere fuer Heizgeraete
DE3010078C2 (de) * 1980-03-15 1982-10-07 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Mit flüssigem Brennstoff betriebener Brenner für Heizvorrichtungen
DE3318054C2 (de) * 1982-05-21 1986-10-09 Fa. J. Eberspächer, 7300 Esslingen Brenner für kleine Luftheizgeräte zur Beheizung ortsbeweglicher Räume
DE3341305A1 (de) * 1983-11-15 1985-05-30 Walter 7000 Stuttgart Swoboda Vergasungsoelbrenner
DE4327987C2 (de) * 1993-08-20 1997-08-28 Electro Oil Gmbh Brennerkopf für einen Ölbrenner
DE10019198A1 (de) * 2000-04-17 2001-10-18 Webasto Thermosysteme Gmbh Zerstäuberbrenner
DE10039152A1 (de) * 2000-08-06 2002-02-14 Webasto Thermosysteme Gmbh Zerstäuberbrenner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501777A1 (de) * 1965-07-30 1969-11-27 American Air Filter Co Verbrennungskammer fuer Heizvorrichtungen,insbesondere fuer Lufterhitzer
DE1551728A1 (de) * 1967-12-19 1970-04-16 Shell Int Research Brennerkopf
EP0003000A1 (fr) * 1977-12-23 1979-07-11 Fascione, Pietro Tête de combustion destinée à une chambre de combustion
JPS6138316A (ja) * 1984-07-30 1986-02-24 Sanyo Electric Co Ltd 液体燃料燃焼装置
DE3618987A1 (de) * 1986-06-05 1987-12-10 Walter Swoboda Verbrennungsverfahren
DE4218629A1 (de) * 1992-06-05 1993-12-16 Eberspaecher J Brennkammer, insbesondere für die Partikelfilterregenerierung in einer Kraftfahrzeug-Abgasanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 193 (M - 496) 8 July 1986 (1986-07-08) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021140094A1 (fr) * 2020-01-10 2021-07-15 Webasto SE Bruleur et dispositif de chauffage mobile

Also Published As

Publication number Publication date
JP4110290B2 (ja) 2008-07-02
JP2003336815A (ja) 2003-11-28
DE10221495B4 (de) 2004-03-11
DE10221495A1 (de) 2003-12-04

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