WO2004025178A1 - Burner, particularly venturi burner, comprising a combustion chamber pipe - Google Patents

Burner, particularly venturi burner, comprising a combustion chamber pipe Download PDF

Info

Publication number
WO2004025178A1
WO2004025178A1 PCT/DE2003/002955 DE0302955W WO2004025178A1 WO 2004025178 A1 WO2004025178 A1 WO 2004025178A1 DE 0302955 W DE0302955 W DE 0302955W WO 2004025178 A1 WO2004025178 A1 WO 2004025178A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion chamber
burner
tube
burner nozzle
end wall
Prior art date
Application number
PCT/DE2003/002955
Other languages
German (de)
French (fr)
Inventor
Christian Bäcker
Michael Keppler
Steffen Weber
Felix Wolf
Original Assignee
Webasto Ag
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 Ag filed Critical Webasto Ag
Priority to DE10393705T priority Critical patent/DE10393705D2/en
Priority to AU2003269699A priority patent/AU2003269699A1/en
Priority to DE50309895T priority patent/DE50309895D1/en
Priority to EP03750323A priority patent/EP1552218B1/en
Publication of WO2004025178A1 publication Critical patent/WO2004025178A1/en

Links

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
    • 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
    • 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
    • F23D11/38—Nozzles; Cleaning devices therefor
    • 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
    • F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube

Definitions

  • Burner especially Venturi burner, with a combustion chamber tube
  • the invention relates to a burner, in particular a Venturi burner for a mobile heater, with a burner nozzle on an end face of a combustion chamber, a combustion chamber tube which surrounds the combustion chamber, and a combustion chamber end wall which delimits the combustion chamber towards the burner nozzle.
  • the invention further relates to a mobile heater with such a burner.
  • Burners are used in mobile heaters, in particular for use as auxiliary heating in vehicles or airplanes, which convert the energy stored in liquid or gaseous fuels into thermal energy.
  • the burners basically consist of a burner nozzle for spraying and processing the liquid fuel, and a combustion chamber into which the fuel prepared in this way is sprayed. Air is also supplied to the burner nozzle and the combustion chamber for the combustion of the fuel.
  • the burned fuel exits the combustion chamber as exhaust gas into a flame tube and subsequently through a heat exchanger into an exhaust pipe.
  • components of the heater are also arranged on the side of the burner nozzle facing away from the combustion chamber, which components are not exposed to high thermal loads allowed to.
  • Such components can be, for example, electronic components of a control unit of the heater.
  • the area of the combustion chamber must also be hermetically sealed from the environment and a possible escape of fuel gas to the side of the burner nozzle facing away from the combustion chamber must be reliably prevented.
  • a burner with a Venturi nozzle is known from DE 100 19 890 A1, in which a combustion chamber tube surrounding the combustion chamber is designed with double walls with two tube walls at its end region facing the burner nozzle.
  • the two tube walls lie close together and are each provided with a collar at the end.
  • the collar of the inner tube wall is directed towards the burner nozzle, while the collar of the outer tube wall faces away from the burner nozzle and towards an outer housing.
  • the burner nozzle is fastened to the collar of the inner tube wall and the combustion chamber tube itself is fastened to the outer housing with the collar of the outer tube wall.
  • a combustion chamber end wall is formed with the two collars, which is fastened radially on the outside to the outer housing and to which the burner nozzle is fastened radially on the inside.
  • a secure seal In the case of a burner with a Venturi nozzle, a secure seal must be created between the burner nozzle and the combustion chamber end wall.
  • a seal is used between the burner nozzle and the combustion chamber end wall in the burner according to DE 100 19 890 A1. This seal is so large that it also serves as a seal between the combustion chamber end wall (ie the collar of the outer tube wall) and the outer housing radially on the outside. In this way, a hermetic seal can be created in two areas at the same time with the help of a single seal. The seal is used to seal between the inner and the outer tube wall, thus creating an undefined air supply prevented in the combustion chamber.
  • the arrangement according to DE 100 19 890 A1 has the disadvantage, however, that leaks can occur due to dimensional fluctuations in the individual components (in particular the outer housing and the tube walls of the combustion chamber tube).
  • such components which are located on the side of the burner nozzle facing away from the combustion chamber, can only be shielded from the high temperatures in the combustion chamber with greater effort.
  • the invention has for its object to improve a heater of the type mentioned in such a way that it is cheaper to manufacture in the area of its burner and in particular the above-mentioned problems with regard to the sealing of the combustion chamber and with regard to the thermal decoupling of heat-sensitive components of the heater from the burner are overcome.
  • This object is achieved according to the invention with an above-mentioned burner, in which in particular the burner nozzle is held solely on the combustion chamber end wall, the combustion chamber pipe is held solely on its end region facing away from the combustion chamber end wall on an outer pipe, and an annular gap permeable to air is located between the combustion chamber end wall and the outer pipe is trained. Furthermore, the object is achieved with a heater which is equipped with such a burner.
  • the burner nozzle is held solely on the end wall of the combustion chamber, so that a seal can be created there in a simple and effective manner.
  • the combustion chamber tube is solely attached to an outer tube at its end facing away from the burner nozzle. In this area too, a seal can be created in a simple manner, for example by means of a weld seam.
  • the burner nozzle is solely attached to the end of the combustion chamber tube facing away from the burner nozzle via the combustion chamber end wall and the combustion chamber tube. Furthermore, an annular gap is formed between the combustion chamber end wall and the outer housing. In this way, thermal decoupling is created in the area of the combustion chamber end wall. The thermal energy generated in the combustion chamber and transferred to the burner nozzle, the combustion chamber end wall and the combustion chamber tube is therefore transferred in the heater according to the invention only at the end of the combustion chamber tube facing away from the burner nozzle by heat conduction onto the outer tube. Components that are located on the side of the burner nozzle facing away from the combustion chamber are thus better protected against heat input.
  • the burner nozzle is provided with at least one first opening through which primary air can be introduced into the combustion chamber.
  • a first opening serves to improve the atomization of the liquid fuel in the burner nozzle. Due to the arrangement of the burner nozzle according to the invention, the opening is freely accessible for primary air, so that a wide variety of types of air supply channels can be formed on the burner nozzle.
  • the combustion chamber end wall is provided with at least one second opening through which secondary air can be introduced into the combustion chamber.
  • Such a secondary air supply creates a staged combustion air supply with which the quality of the combustion can be improved and thus the overall pollutant emissions of the burner can be reduced.
  • the first and second openings mentioned can be sealed with the arrangement according to the invention particularly advantageously against a common supply of combustion air.
  • the arrangement according to the invention in the region of the combustion chamber forms the prerequisite for the combustion chamber tube to be provided with at least one third opening through which tertiary air can be introduced into the combustion chamber.
  • the quality of the combustion can be further increased in this way.
  • baffle plate is arranged in the combustion chamber and the third opening in the combustion chamber tube is formed in such a way that the baffle plate is cooled with the aid of the tertiary air.
  • a targeted cooling of the baffle plate reduces its temperature during the ' combustion. It is therefore possible that a less temperature-resistant and therefore less expensive material is used for the baffle plate.
  • the arrangement according to the invention can be sealed in a particularly simple manner with respect to the area of the heater facing away from the combustion chamber by arranging a first seal between the burner nozzle and the combustion chamber end wall.
  • This first seal can be made specifically from a temperature-resistant material.
  • the seal can be preassembled when the burner nozzle is mounted on the combustion chamber end wall, so that a tightness check is already possible subsequently. Furthermore, such Assembled unit consisting of burner nozzle and combustion chamber to be tested for its proper function.
  • the outer tube is advantageously held on an outer housing at its end region facing the burner nozzle, and a second seal is arranged between the outer tube and the outer housing.
  • An outer tube held in this way can be washed around the outside by liquid heat transfer medium, for example, and can be cooled in the process.
  • the outer tube is fastened to an outer housing cooled by liquid heat transfer medium.
  • the second seal can be designed specifically from a material that is considerably less temperature-resistant than the first seal mentioned above. Because the first and the second seal are arranged separately from one another according to the invention, dimensional tolerances in the axial direction of the combustion chamber have no effect in the seal concept according to the invention. In addition, thermal expansion of the combustion chamber end wall in the radial direction can be better compensated for.
  • the second seal only needs to be installed in the heater during final assembly of the burner and therefore cannot be damaged during the previous pre-assembly of the burner.
  • a shielding wall can also advantageously be arranged on the outer tube at its end facing the burner nozzle, by means of which components which are arranged on the side of the burner nozzle facing away from the combustion chamber are shielded against heat from the combustion chamber end wall.
  • the shielding wall can be held in a particularly simple manner in the region of the second seal on the outer housing of the heater. It can have flow control devices by means of which the secondary and / or the tertiary air flow can be influenced with regard to the air volume per unit of time.
  • Fig. 1 shows a longitudinal section of a burner in a mobile heater according to the invention.
  • FIG. 1 A mobile heater 10 in the area of a burner 12 is illustrated in FIG. 1.
  • the burner 12 is designed as a Venturi burner and has as essential components a burner nozzle 14 and a cylindrical combustion chamber 16, which is surrounded radially on the outside by a combustion chamber tube 18 and is delimited by a combustion chamber end wall 20 on the end face facing the burner nozzle 14.
  • the burner nozzle 14 is formed with an essentially cylindrical nozzle body 22, in which a plurality of radial channels 24 for supplying primary air into a first opening 26 of the nozzle body 22 are formed at its end region facing away from the combustion chamber 16.
  • the first opening 26 is formed in the central region of the nozzle body 22 and is flared in the direction of the combustion chamber 16.
  • a fuel feed line 28 serves to supply liquid fuel into the first opening 26 of the nozzle body.
  • the nozzle body 22 of the burner nozzle 26 is held solely on the combustion chamber end wall 20, a central opening 30 being formed in the combustion chamber end wall 20 through which the fuel atomized in the first opening 26 can enter the combustion chamber 16.
  • further radial channels 32 are formed on the contact surface with the combustion chamber end wall 20, through which the secondary air leads to second openings 34 in the combustion chamber end wall 20 becomes. The secondary air enters the combustion chamber 16 through these second openings 34 and there leads to a staged combustion with high combustion quality.
  • a first seal 36 made of a heat-resistant material is arranged between the nozzle body 22 and the combustion chamber end wall, by means of which the nozzle body 22 is sealed off from the combustion chamber 16 and at the same time is fastened to the combustion chamber end wall.
  • the combustion chamber end wall 20 is formed as an angled section or as a collar of a tube which forms the combustion chamber tube 18 in its otherwise cylindrical section.
  • the combustion chamber tube 18 is welded to an outer tube 40 at its end region 38 facing away from the combustion nozzle 14.
  • the weld seam surrounds the combustion chamber tube 18 in an annular manner, an essentially annular contact surface being formed between the combustion chamber tube 18 and the outer tube 40, via which only small amounts of thermal energy are transferred from the combustion chamber tube 18 to the outer tube 40.
  • annular gap 42 is formed between the combustion chamber end wall 20 and the outer tube 40, but also between the combustion chamber tube 18 and the outer tube 40, which is particularly for thermal decoupling of the
  • Combustion chamber end wall 20 leads relative to components which are located on the side of the burner nozzle 14 facing away from the combustion chamber 16.
  • Such components can be electronic components, for example, which are not further illustrated in FIG. 1.
  • thermal energy of the nozzle body 22 can only be transferred to the outer tube 40 by heat conduction over the relatively long distance to the end region 38 of the combustion chamber tube 18 facing away from the burner nozzle 14.
  • Tertiary air can also be conducted through the annular gap 42 to third openings 44 are, which are formed approximately axially in the middle of the combustion chamber tube 18 distributed over its circumference.
  • a baffle plate 46 is also held in the combustion chamber tube 18 and is cooled by means of the combustion air supplied through the third openings 44.
  • annular gap 42 leads to a changed sealing concept, which is explained in more detail below.
  • the outer tube 40 is formed at its end region facing away from the burner nozzle 14 with a first collar 48, to which a flame tube 50 is fastened. At its end region facing the burner nozzle 14, the outer tube 40 is provided with a second collar 52 which projects radially outward. This second collar 52 is clamped between a first and a second section 54 or 56 of a housing of the heater 10, which housing is not illustrated.
  • a shielding wall 58 is also clamped between the sections 54 and 56, which projects radially inward in front of the combustion chamber end wall 20 on the side of the combustion chamber end wall 20 facing away from the combustion chamber 16.
  • the shielding wall 58 fastened in such a particularly simple manner serves to shield the above-mentioned components from the heat generated in the combustion chamber 16.
  • the outer tube 40 is surrounded radially on the outside by a heat transfer chamber 60, in which a liquid heat transfer medium flows.
  • a second seal 60 is arranged on the second collar 52 of the outer tube 40, by means of which the outer tube 40 is sealed in the region of the clamping with the sections 54 and 56 of the housing from the heat transfer chamber 62.
  • the second seal 60 is particularly tailored to the requirements of sealing the heat transfer chamber 62 from the space around the burner nozzle 14.
  • the liquid heat transfer medium flowing in the heat transfer chamber 62 must not exit into the area around the burner nozzle 14.
  • the second seal 60 is made of a material that is well fluid-carrying Seals space and at the same time only has to withstand relatively low temperatures.
  • first and second seals 36 and 60 can be optimally sealed regardless of dimensional tolerances on the burner 12, and their material and shape can be optimally adapted to the respective sealing tasks.
  • the materials of the two seals 36 and 60 can each be optimally adapted to the prevailing temperature conditions in the sealing areas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Spray-Type Burners (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

Disclosed is a burner (12) comprising a burner nozzle (14) that is disposed on a front side of a combustion chamber (16), a combustion chamber pipe (18) which encloses the combustion chamber (16), and a combustion chamber front wall (20) which delimits the combustion chamber (16) towards the burner nozzle (14). In order to resolve particularly problems regarding sealing of the combustion chamber (16) and thermal decoupling of heat-sensitive components of a heating device (10) relative to the burner (12), the burner nozzle (14) is mounted exclusively on the combustion chamber front wall (20), the combustion chamber pipe (18) is mounted exclusively on an outer pipe (40) at the final section (38) that is located opposite the combustion chamber front wall (20), and an air-permeable annular gap (42) is embodied between the combustion chamber front wall (20) and the outer pipe (40).

Description

Brenner, insbesondere Venturibrenner, mit einem BrennkammerrohrBurner, especially Venturi burner, with a combustion chamber tube
Hintergrund der ErfindungBackground of the Invention
Die Erfindung betrifft einen Brenner, insbesondere einen Venturibrenner für ein mobiles Heizgerät, mit einer Brennerdüse an einer Stirnseite einer Brennkammer, einem Brennkammerrohr, das die Brennkammer umschließt, und einer Brennkammerstirnwand, die die Brennkammer zu der Brennerdüse hin begrenzt. Ferner betrifft die Erfindung ein mobiles Heizgerät mit einem solchen Brenner.The invention relates to a burner, in particular a Venturi burner for a mobile heater, with a burner nozzle on an end face of a combustion chamber, a combustion chamber tube which surrounds the combustion chamber, and a combustion chamber end wall which delimits the combustion chamber towards the burner nozzle. The invention further relates to a mobile heater with such a burner.
Bei mobilen Heizgeräten, insbesondere für die Verwendung als Standheizung bei Fahrzeugen oder Flugzeugen, kommen Brenner zum Einsatz, die die in flüssigen oder gasförmigen Brennstoffen gespeicherte Energie in Wärmeenergie umwandeln. Die Brenner bestehen grundsätzlich aus einer Brennerdüse zum Einsprühen und Aufbereiten des flüssigen Brennstoffs, und einer Brennkammer, in die der derart aufbereitete Brennstoff eingesprüht wird. Der Brennerdüse und der Brennkammer wird ferner Luft für die Verbrennung des Brennstoffs zugeführt. Aus der Brennkammer tritt der verbrannte Brennstoff als Abgas in ein Flammrohr und nachfolgend durch einen Wärmeübertrager in eine Abgasleitung aus.Burners are used in mobile heaters, in particular for use as auxiliary heating in vehicles or airplanes, which convert the energy stored in liquid or gaseous fuels into thermal energy. The burners basically consist of a burner nozzle for spraying and processing the liquid fuel, and a combustion chamber into which the fuel prepared in this way is sprayed. Air is also supplied to the burner nozzle and the combustion chamber for the combustion of the fuel. The burned fuel exits the combustion chamber as exhaust gas into a flame tube and subsequently through a heat exchanger into an exhaust pipe.
Grundsätzlich ist es erwünscht, dass bei der Verbrennung in der Brennkammer ein hohes Maß an Wärmeenergie erzeugt wird. Zugleich sind an der von der Brennkammer abgewandten Seite der Brennerdüse jedoch auch Bauelemente des Heizgeräts angeordnet, die keiner hohen Wärmebelastung ausgesetzt werden dürfen. Solche Bauelemente können beispielsweise elektronische Bauelemente eines Steuergeräts des Heizgeräts sein.Basically, it is desirable that a high level of thermal energy is generated during the combustion in the combustion chamber. At the same time, however, components of the heater are also arranged on the side of the burner nozzle facing away from the combustion chamber, which components are not exposed to high thermal loads allowed to. Such components can be, for example, electronic components of a control unit of the heater.
Bei solchen Heizgeräten muss ferner der Bereich der Brennkammer hermetisch gegenüber der Umgebung abgedichtet sein und ein möglicher Austritt von Brenngas auf die von der Brennkammer abgewandte Seite der Brennerdüse muss sicher verhindert sein.In such heaters, the area of the combustion chamber must also be hermetically sealed from the environment and a possible escape of fuel gas to the side of the burner nozzle facing away from the combustion chamber must be reliably prevented.
Um eine solche hermetische Abdichtung der Brennkammer zu erreichen ist aus DE 100 19 890 A1 ein Brenner mit einer Venturidüse bekannt, bei dem ein die Brennkammer umgebendes Brennkammerrohr an seinem der Brennerdüse zugewandten Endbereich doppelwandig mit zwei Rohrwänden ausgebildet ist. Die beiden Rohrwände liegen dicht aneinander an und sind am Ende je mit einem Bund versehen. Der Bund der innenliegenden Rohrwand ist zur Brennerdüse hin gerichtet, während der Bund der außenliegenden Rohrwand von der Brennerdüse weg, hin zu einem Außengehäuse gewandt ist. An dem Bund der innenliegenden Rohrwand ist die Brennerdüse befestigt und mit dem Bund der außenliegenden Rohrwand ist das Brennkammerrohr selbst an dem Außengehäuse befestigt. Auf diese Weise ist mit den beiden Bunden eine Brennkammerstirnwand ausgebildet, die radial außen am Außengehäuse befestigt ist und an der radial innen die Brennerdüse befestigt ist.In order to achieve such a hermetic sealing of the combustion chamber, a burner with a Venturi nozzle is known from DE 100 19 890 A1, in which a combustion chamber tube surrounding the combustion chamber is designed with double walls with two tube walls at its end region facing the burner nozzle. The two tube walls lie close together and are each provided with a collar at the end. The collar of the inner tube wall is directed towards the burner nozzle, while the collar of the outer tube wall faces away from the burner nozzle and towards an outer housing. The burner nozzle is fastened to the collar of the inner tube wall and the combustion chamber tube itself is fastened to the outer housing with the collar of the outer tube wall. In this way, a combustion chamber end wall is formed with the two collars, which is fastened radially on the outside to the outer housing and to which the burner nozzle is fastened radially on the inside.
Bei einem Brenner mit einer Venturidüse muss eine sichere Abdichtung zwischen der Brennerdüse und der Brennkammerstirnwand geschaffen sein. Hierzu ist bei dem Brenner gemäß DE 100 19 890 A1 eine Dichtung zwischen der Brennerdüse und der Brennkammerstirnwand eingesetzt. Diese Dichtung ist derart groß gestaltet, dass sie zugleich radial außen als Abdichtung zwischen der Brennkammerstirnwand (d.h. dem Bund der außenliegenden Rohrwand) und dem Außengehäuse dient. Auf diese weise kann mit Hilfe einer einzigen Dichtung eine hermetische Abdichtung an zwei Bereichen gleichzeitig geschaffen werden. Mit der Dichtung wird zwischen der inneren und der äußeren Rohrwand abgedichtet und so eine Undefinierte Luftzufuhr in die Brennkammer verhindert.In the case of a burner with a Venturi nozzle, a secure seal must be created between the burner nozzle and the combustion chamber end wall. For this purpose, a seal is used between the burner nozzle and the combustion chamber end wall in the burner according to DE 100 19 890 A1. This seal is so large that it also serves as a seal between the combustion chamber end wall (ie the collar of the outer tube wall) and the outer housing radially on the outside. In this way, a hermetic seal can be created in two areas at the same time with the help of a single seal. The seal is used to seal between the inner and the outer tube wall, thus creating an undefined air supply prevented in the combustion chamber.
Die Anordnung gemäß DE 100 19 890 A1 weist jedoch den Nachteil auf, dass es aufgrund von Maßschwankungen der einzelnen Bauteile (insbesondere des Außengehäuses und der Rohrwände des Brennkammerrohrs) zu Undichtheiten kommen kann. Darüber hinaus können bei dieser Anordnung solche Bauelemente, die sich auf der von der Brennkammer abgewandten Seite der Brennerdüse befinden, nur mit größerem Aufwand gegenüber den hohen Temperaturen in der Brennkammer abgeschirmt werden.The arrangement according to DE 100 19 890 A1 has the disadvantage, however, that leaks can occur due to dimensional fluctuations in the individual components (in particular the outer housing and the tube walls of the combustion chamber tube). In addition, with this arrangement, such components, which are located on the side of the burner nozzle facing away from the combustion chamber, can only be shielded from the high temperatures in the combustion chamber with greater effort.
Zugrundeliegende AufgabeUnderlying task
Der Erfindung liegt die Aufgabe zugrunde, ein Heizgerät der eingangs genannten Art derart zu verbessern, dass es im Bereich seines Brenners kostengünstiger herzustellen ist und insbesondere die oben genannten Probleme hinsichtlich der Abdichtung der Brennkammer und hinsichtlich der thermischen Entkopplung von wärmeempfindlichen Bauelementen des Heizgeräts gegenüber dem Brenner überwunden sind.The invention has for its object to improve a heater of the type mentioned in such a way that it is cheaper to manufacture in the area of its burner and in particular the above-mentioned problems with regard to the sealing of the combustion chamber and with regard to the thermal decoupling of heat-sensitive components of the heater from the burner are overcome.
Erfindungsgemäße LösungSolution according to the invention
Diese Aufgabe ist erfindungsgemäß mit einem oben genannten Brenner gelöst, bei dem insbesondere die Brennerdüse alleinig an der Brennkammerstirnwand gehaltert ist, das Brennkammerrohr alleinig an seinem von der Brennkammerstirnwand abgewandten Endbereich an einem Außenrohr gehaltert ist und zwischen der Brennkammerstirnwand und dem Außenrohr ein für Luft durchlässiger Ringspalt ausgebildet ist. Ferner ist die Aufgabe mit einem Heizgerät gelöst, das mit einem derartigen Brenner ausgestattet ist.This object is achieved according to the invention with an above-mentioned burner, in which in particular the burner nozzle is held solely on the combustion chamber end wall, the combustion chamber pipe is held solely on its end region facing away from the combustion chamber end wall on an outer pipe, and an annular gap permeable to air is located between the combustion chamber end wall and the outer pipe is trained. Furthermore, the object is achieved with a heater which is equipped with such a burner.
Durch die erfindungsgemäße Gestaltung ist die oben genannte Dichtproblematik vermieden. Erfindungsgemäß ist die Brennerdüse alleinig an der Brennkammerstirnwand gehaltert, so dass dort in einfacher und zugleich wirkungsvoller weise eine Abdichtung geschaffen sein kann. Daneben ist erfindungsgemäß das Brennkammerrohr alleinig an seinem von der Brennerdüse abgewandten Ende an einem Außenrohr befestigt. Auch in diesem Bereich kann in einfacher weise, beispielsweise durch eine Schweißnaht, eine Abdichtung geschaffen sein.The above-mentioned sealing problem is due to the design according to the invention avoided. According to the invention, the burner nozzle is held solely on the end wall of the combustion chamber, so that a seal can be created there in a simple and effective manner. In addition, according to the invention, the combustion chamber tube is solely attached to an outer tube at its end facing away from the burner nozzle. In this area too, a seal can be created in a simple manner, for example by means of a weld seam.
Darüber hinaus ist aufgrund der erfindungsgemäßen Gestaltung des Brenners die Brennerdüse über die Brennkammerstirnwand und das Brennkammerrohr alleinig an dem von der Brennerdüse abgewandten Ende des Brennkammerrohrs befestigt. Ferner ist zwischen der Brennkammerstirnwand und dem Außengehäuse ein Ringspalt ausgebildet. Auf diese Weise ist eine thermische Entkopplung im Bereich der Brennkammerstirnwand geschaffen. Die Wärmeenergie, die in der Brennkammer erzeugt und auf die Brennerdüse, die Brennkammerstirnwand und das Brennkammerrohr übertragen wird, wird daher bei dem erfindungsgemäßen Heizgerät allein an dem von der Brennerdüse abgewandten Ende des Brennkammerrohrs durch Wärmeleitung auf das Außenrohr übertragen. Damit sind Bauelemente, die sich an der von der Brennkammer abgewandten Seite der Brennerdüse befinden besser gegen Wärmeeintrag geschützt.In addition, due to the design of the burner according to the invention, the burner nozzle is solely attached to the end of the combustion chamber tube facing away from the burner nozzle via the combustion chamber end wall and the combustion chamber tube. Furthermore, an annular gap is formed between the combustion chamber end wall and the outer housing. In this way, thermal decoupling is created in the area of the combustion chamber end wall. The thermal energy generated in the combustion chamber and transferred to the burner nozzle, the combustion chamber end wall and the combustion chamber tube is therefore transferred in the heater according to the invention only at the end of the combustion chamber tube facing away from the burner nozzle by heat conduction onto the outer tube. Components that are located on the side of the burner nozzle facing away from the combustion chamber are thus better protected against heat input.
Vorteilhafte Weiterbildungen der ErfindungAdvantageous developments of the invention
Bei einer vorteilhaften Weiterbildung der Erfindung ist die Brennerdüse mit mindestens einer ersten Öffnung versehen, durch die Primärluft in die Brennkammer eingeleitet werden kann. Eine solche erste Öffnung dient zur Verbesserung der Zerstäubung des flüssigen Brennstoffs in der Brennerdüse. Die Öffnung ist aufgrund der erfindungsgemäßen Anordnung der Brennerdüse frei für Primärluft zugänglich, so dass an der Brennerdüse verschiedenste Arten von Luftzuführkanälen ausgebildet sein können. Ferner ist es vorteilhaft, dass die Brennkammerstirnwand mit mindestens einer zweiten Öffnung versehen ist, durch die Sekundärluft in die Brennkammer eingeleitet werden kann. Durch eine solche Sekundärluftzufuhr wird eine gestufte Brennluftzufuhr geschaffen, mit der die Qualität der Verbrennung verbessert und damit insgesamt der Schadstoffausstoß des Brenners verringert werden kann. Die genannten ersten und zweiten Öffnungen können mit der erfindungsgemäßen Anordnung besonders vorteilhaft gegenüber einer gemeinsamen Brennluftzufuhr abgedichtet werden.In an advantageous development of the invention, the burner nozzle is provided with at least one first opening through which primary air can be introduced into the combustion chamber. Such a first opening serves to improve the atomization of the liquid fuel in the burner nozzle. Due to the arrangement of the burner nozzle according to the invention, the opening is freely accessible for primary air, so that a wide variety of types of air supply channels can be formed on the burner nozzle. It is also advantageous that the combustion chamber end wall is provided with at least one second opening through which secondary air can be introduced into the combustion chamber. Such a secondary air supply creates a staged combustion air supply with which the quality of the combustion can be improved and thus the overall pollutant emissions of the burner can be reduced. The first and second openings mentioned can be sealed with the arrangement according to the invention particularly advantageously against a common supply of combustion air.
Darüber hinaus bildet die erfindungsgemäße Anordnung im Bereich der Brennkammer die Vorraussetzung dafür, dass das Brennkammerrohr mit mindestens einer dritten Öffnung versehen ist, durch die Tertiärluft in die Brennkammer eingeleitet werden kann. Die Qualität der Verbrennung kann auf diese Weise weiter gesteigert werden.In addition, the arrangement according to the invention in the region of the combustion chamber forms the prerequisite for the combustion chamber tube to be provided with at least one third opening through which tertiary air can be introduced into the combustion chamber. The quality of the combustion can be further increased in this way.
Mit der Zufuhr von Tertiärluft ist es ferner möglich, dass in der Brennkammer eine Prallscheibe angeordnet wird und die dritte Öffnung in dem Brennkammerrohr derart ausgebildet wird, dass die Prallscheibe mit Hilfe der Tertiärluft gekühlt wird. Durch eine derart gezielte Kühlung der Prallscheibe wird deren Temperatur während der ' Verbrennung verringert. Daher ist es möglich, dass für die Prallscheibe ein weniger temperaturfestes und damit kostengünstigeres Material verwendet wird.With the supply of tertiary air, it is also possible that a baffle plate is arranged in the combustion chamber and the third opening in the combustion chamber tube is formed in such a way that the baffle plate is cooled with the aid of the tertiary air. Such a targeted cooling of the baffle plate reduces its temperature during the ' combustion. It is therefore possible that a less temperature-resistant and therefore less expensive material is used for the baffle plate.
Die erfindungsgemäße Anordnung kann auf besonders einfache Weise gegenüber dem von der Brennkammer abgewandten Bereich des Heizgeräts abgedichtet werden, indem zwischen der Brennerdüse und der Brennkammerstirnwand eine erste Dichtung angeordnet ist. Diese erste Dichtung kann gezielt aus einem temperaturresistenten Material ausgebildet sein. Die Dichtung kann bei der Montage der Brennerdüse an die Brennkammerstirnwand vormontiert werden, so dass nachfolgend bereits eine Dichtheitskontrolle möglich ist. Ferner kann die derart montierte Baueinheit aus Brennerdüse und Brennkammer bereist auf seine ordnungsgemäße Funktion getestet werden.The arrangement according to the invention can be sealed in a particularly simple manner with respect to the area of the heater facing away from the combustion chamber by arranging a first seal between the burner nozzle and the combustion chamber end wall. This first seal can be made specifically from a temperature-resistant material. The seal can be preassembled when the burner nozzle is mounted on the combustion chamber end wall, so that a tightness check is already possible subsequently. Furthermore, such Assembled unit consisting of burner nozzle and combustion chamber to be tested for its proper function.
Darüber hinaus ist bei dem erfindungsgemäßen Brenner vorteilhaft das Außenrohr an seinem der Brennerdüse zugewandten Endbereich an einem Außengehäuse gehaltert und zwischen dem Außenrohr und dem Außengehäuse ist eine zweite Dichtung angeordnet. Ein derart gehaltertes Außenrohr kann an seiner Außenseite von beispielsweise flüssigem Wärmeträger umspült und dabei gekühlt werden. Mit anderen Worten ist das Außenrohr an einem durch flüssigen Wärmeträger gekühlten Außengehäuse befestigt. Die zweite Dichtung kann gezielt aus einem Material gestaltet sein, dass erheblich weniger temperaturfest ist, als die oben genannte erste Dichtung. Weil die erste und die zweite Dichtung erfindungsgemäß separat voneinander angeordnet sind, wirken sich bei dem erfindungsgemäßen Dichtungskonzept Maßtoleranzen in axialer Richtung der Brennkammer nicht aus. Darüber hinaus können Wärmedehnungen der Brennkammerstimwand in radialer Richtung besser ausgeglichen werden. Die zweite Dichtung braucht erst bei der Endmontage des Brenners in das Heizgerät montiert zu werden und kann daher auch nicht während der vorhergehenden Vormontage des Brenners beschädigt werden.In addition, in the burner according to the invention, the outer tube is advantageously held on an outer housing at its end region facing the burner nozzle, and a second seal is arranged between the outer tube and the outer housing. An outer tube held in this way can be washed around the outside by liquid heat transfer medium, for example, and can be cooled in the process. In other words, the outer tube is fastened to an outer housing cooled by liquid heat transfer medium. The second seal can be designed specifically from a material that is considerably less temperature-resistant than the first seal mentioned above. Because the first and the second seal are arranged separately from one another according to the invention, dimensional tolerances in the axial direction of the combustion chamber have no effect in the seal concept according to the invention. In addition, thermal expansion of the combustion chamber end wall in the radial direction can be better compensated for. The second seal only needs to be installed in the heater during final assembly of the burner and therefore cannot be damaged during the previous pre-assembly of the burner.
Bei einem derart erfindungsgemäß gestalteten Brenner kann ferner vorteilhaft an dem Außenrohr an seinem der Brennerdüse zugewandten Ende eine Abschirmwand angeordnet werden, mittels der Bauelemente, die an der von der Brennkammer abgewandten Seite der Brennerdüse angeordnet sind, gegenüber der Brennkammerstirnwand gegen Wärme abgeschirmt sind. Die Abschirmwand kann in besonders einfacher Weise im Bereich der zweiten Dichtung an dem Außengehäuse des Heizgeräts gehaltert sein. Sie kann Strömungsleiteinrichtungen aufweisen, mittels denen der Sekundär- und/oder der Tertiärluftstrom hinsichtlich des Luftvolumens pro Zeiteinheit beeinflusst werden kann. Kυrzbeschreibung der ZeichnungIn such a burner designed according to the invention, a shielding wall can also advantageously be arranged on the outer tube at its end facing the burner nozzle, by means of which components which are arranged on the side of the burner nozzle facing away from the combustion chamber are shielded against heat from the combustion chamber end wall. The shielding wall can be held in a particularly simple manner in the region of the second seal on the outer housing of the heater. It can have flow control devices by means of which the secondary and / or the tertiary air flow can be influenced with regard to the air volume per unit of time. Brief description of the drawing
Nachfolgend wird ein Ausführungsbeispiel eines erfindungsgemäßen Brenners anhand der beigefügten schematischen Zeichnung näher erläutert. Es zeigt:An exemplary embodiment of a burner according to the invention is explained in more detail below with the aid of the attached schematic drawing. It shows:
Fig. 1 einen Längsschnitt eines Brenners in einem mobilen Heizgerät gemäß der Erfindung.Fig. 1 shows a longitudinal section of a burner in a mobile heater according to the invention.
Detaillierte Beschreibung des AusführungsbeispielsDetailed description of the embodiment
In Fig. 1 ist ein mobiles Heizgerät 10 im Bereich eines Brenners 12 veranschaulicht. Der Brenner 12 ist als Venturibrenner gestaltet und weist als wesentliche Bauelemente eine Brennerdüse 14 sowie eine zylindrische Brennkammer 16 auf, die von einem Brennkammerrohr 18 radial außen umfasst und an der der Brennerdüse 14 zugewandten Stirnseite von einer Brennkammerstirnwand 20 begrenzt ist.A mobile heater 10 in the area of a burner 12 is illustrated in FIG. 1. The burner 12 is designed as a Venturi burner and has as essential components a burner nozzle 14 and a cylindrical combustion chamber 16, which is surrounded radially on the outside by a combustion chamber tube 18 and is delimited by a combustion chamber end wall 20 on the end face facing the burner nozzle 14.
Die Brennerdüse 14 ist mit einem im wesentlichen zylindrischen Düsenkörper 22 gebildet, in dem an seinem von der Brennkammer 16 abgewandten Endbereich mehrere Radialkanäle 24 zum Zuführen von Primärluft in eine erste Öffnung 26 des Düsenkörpers 22 ausgebildet sind. Die erste Öffnung 26 ist im Zentralbereich des Düsenkörpers 22 ausgebildet und in Richtung zur Brennkammer 16 trichterförmig aufgeweitet. Eine Brennstoffzuleitung 28 dient zum Zuführen von flüssigem Brennstoff in die erste Öffnung 26 des Düsenkörpers.The burner nozzle 14 is formed with an essentially cylindrical nozzle body 22, in which a plurality of radial channels 24 for supplying primary air into a first opening 26 of the nozzle body 22 are formed at its end region facing away from the combustion chamber 16. The first opening 26 is formed in the central region of the nozzle body 22 and is flared in the direction of the combustion chamber 16. A fuel feed line 28 serves to supply liquid fuel into the first opening 26 of the nozzle body.
Der Düsenkörper 22 der Brennerdüse 26 ist alleinig an der Brennkammerstirnwand 20 gehaltert, wobei in der Brennkammerstirnwand 20 eine zentrale Öffnung 30 ausgebildet ist, durch die der in der ersten Öffnung 26 zerstäubte Brennstoff in die Brennkammer 16 eintreten kann. In dem Düsenstock 22 sind an der Anlagefläche zur Brennkammerstirnwand 20 weitere Radialkanäle 32 ausgebildet, durch 30 die Sekundärluft zu zweiten Öffnungen 34 in der Brennkammerstirnwand 20 geführt wird. Die Sekundäriuft tritt durch diese zweiten Öffnungen 34 in die Brennkammer 16 ein und führt dort zu einer gestuften Verbrennung mit hoher Brennqualität.The nozzle body 22 of the burner nozzle 26 is held solely on the combustion chamber end wall 20, a central opening 30 being formed in the combustion chamber end wall 20 through which the fuel atomized in the first opening 26 can enter the combustion chamber 16. In the nozzle assembly 22, further radial channels 32 are formed on the contact surface with the combustion chamber end wall 20, through which the secondary air leads to second openings 34 in the combustion chamber end wall 20 becomes. The secondary air enters the combustion chamber 16 through these second openings 34 and there leads to a staged combustion with high combustion quality.
Zwischen dem Düsenkörper 22 und der Brennkammerstirnwand ist eine erste Dichtung 36 aus einem wärmeresistenten Material angeordnet, mittels der der Düsenkörper 22 gegenüber der Brennkammer 16 abgedichtet und zugleich an der Brennkammerstirnwand befestigt ist.A first seal 36 made of a heat-resistant material is arranged between the nozzle body 22 and the combustion chamber end wall, by means of which the nozzle body 22 is sealed off from the combustion chamber 16 and at the same time is fastened to the combustion chamber end wall.
Die Brennkammerstirnwand 20 ist als ein abgewinkelter Abschnitt bzw. als Bund eines Rohres gebildet, das in seinem ansonsten zylindrischen Abschnitt das Brennkammerrohr 18 bildet. Das Brennkammerrohr 18 ist an seinem von der Brenndüse 14 abgewandten Endbereich 38 mit einem Außenrohr 40 verschweißt. Die Schweißnaht umgibt das Brennkammerrohr 18 ringförmig, wobei zwischen dem Brennkammerrohr 18 und dem Außenrohr 40 eine im wesentlichen ringförmige Anlagefläche ausgebildet ist, über die nur geringe Wärmeenergiemengen von dem Brennkammerrohr 18 auf das Außenrohr 40 übergeleitet werden.The combustion chamber end wall 20 is formed as an angled section or as a collar of a tube which forms the combustion chamber tube 18 in its otherwise cylindrical section. The combustion chamber tube 18 is welded to an outer tube 40 at its end region 38 facing away from the combustion nozzle 14. The weld seam surrounds the combustion chamber tube 18 in an annular manner, an essentially annular contact surface being formed between the combustion chamber tube 18 and the outer tube 40, via which only small amounts of thermal energy are transferred from the combustion chamber tube 18 to the outer tube 40.
Auf diese Weise ist zwischen der Brennkammerstirnwand 20 und dem Außenrohr 40, aber auch zwischen dem Brennkammerrohr 18 und dem Außenrohr 40 ein Ringspalt 42 ausgebildet, der insbesondere zur thermischen Entkopplung derIn this way, an annular gap 42 is formed between the combustion chamber end wall 20 and the outer tube 40, but also between the combustion chamber tube 18 and the outer tube 40, which is particularly for thermal decoupling of the
Brennkammerstirnwand 20 gegenüber solchen Bauelementen führt, die sich an der von der Brennkammer 16 abgewandten Seite der Brennerdüse 14 befinden. Solche Bauelemente können beispielsweise elektronische Bauelemente sein, die in der Fig. 1 nicht weiter veranschaulicht sind. Bei der gestalteten thermischen Entkopplung ist insbesondere zu beachten, dass Wärmeenergie des Düsenkörpers 22 durch Wärmeleitung nur über den verhältnismäßig weiten Weg zu dem von der Brennerdüse 14 abgewandten Endbereich 38 des Brennkammerrohrs 18 auf das Außenrohr 40 übergeleitet werden kann.Combustion chamber end wall 20 leads relative to components which are located on the side of the burner nozzle 14 facing away from the combustion chamber 16. Such components can be electronic components, for example, which are not further illustrated in FIG. 1. In the case of the designed thermal decoupling, particular attention must be paid to the fact that thermal energy of the nozzle body 22 can only be transferred to the outer tube 40 by heat conduction over the relatively long distance to the end region 38 of the combustion chamber tube 18 facing away from the burner nozzle 14.
Durch den Ringspalt 42 kann ferner Tertiärluft zu dritten Öffnungen 44 geleitet werden, die etwa axial in der Mitte des Brennkammerrohrs 18 über dessen Umfang verteilt ausgebildet sind. Im Brennkammerrohr 18 ist darüber hinaus eine Prallscheibe 46 gehaltert, die mittels der durch die dritten Öffnungen 44 zugeführten Brennluft gekühlt wird.Tertiary air can also be conducted through the annular gap 42 to third openings 44 are, which are formed approximately axially in the middle of the combustion chamber tube 18 distributed over its circumference. A baffle plate 46 is also held in the combustion chamber tube 18 and is cooled by means of the combustion air supplied through the third openings 44.
Darüber hinaus führt der Ringspalt 42 zu einem veränderten Dichtungskonzept, das nachfolgend genauer erläutert wird.In addition, the annular gap 42 leads to a changed sealing concept, which is explained in more detail below.
Das Außenrohr 40 ist an seinem von der Brennerdüse 14 abgewandten Endbe- reich mit einem ersten Bund 48 ausgebildet, an dem ein Flammrohr 50 befestigt ist. An seinem der Brennerdüse 14 zugewandten Endbereich ist das Außenrohr 40 mit einem zweiten Bund 52 versehen, der radial nach außen absteht. Dieser zweite Bund 52 ist zwischen einem ersten und einem zweiten Abschnitt 54 bzw. 56 eines weiter nicht veranschaulichten Gehäuses des Heizgeräts 10 geklemmt.The outer tube 40 is formed at its end region facing away from the burner nozzle 14 with a first collar 48, to which a flame tube 50 is fastened. At its end region facing the burner nozzle 14, the outer tube 40 is provided with a second collar 52 which projects radially outward. This second collar 52 is clamped between a first and a second section 54 or 56 of a housing of the heater 10, which housing is not illustrated.
Im Bereich der Klemmung des zweiten Bunds 52 ist ferner eine Abschirmwand 58 zwischen den Abschnitten 54 und 56 geklemmt, die an der von der Brennkammer 16 abgewandten Seite der Brennkammerstirnwand 20 radial nach innen vor die Brennkammerstirnwand 20 ragt. Die derart auf besonders einfache Weise befestigt Abschirmwand 58 dient zum Abschirmen der oben genannten Bauelemente gegenüber der in der Brennkammer 16 entstehenden Wärme. Das Außenrohr 40 ist radial außen von einem Wärmeträgerraum 60 umgeben, in dem ein flüssiger Wärmeträger strömt. Am zweiten Bund 52 des Außenrohrs 40 ist eine zweite Dichtung 60 angeordnet, mittels der das Außenrohr 40 im Bereich der Klemmung mit den Abschnitten 54 und 56 des Gehäuses gegenüber dem Wärmeträgerraum 62 abgedichtet ist. Die zweite Dichtung 60 ist besonders auf die Anforderungen des Abdichtens des Wärmeträgerraums 62 gegenüber dem Raum um die Brennerdüse 14 herum abgestimmt. Der in dem Wärmeträgerraum 62 strömende flüssige Wärmeträger darf nicht in den Bereich um die Brennerdüse 14 austreten. Die zweite Dichtung 60 ist aus einem Material hergestellt, dass gut einen flüssigkeitsführenden Raum abdichtet und zugleich nur verhältnismäßig geringen Temperaturen standhalten muss.In the region of the clamping of the second collar 52, a shielding wall 58 is also clamped between the sections 54 and 56, which projects radially inward in front of the combustion chamber end wall 20 on the side of the combustion chamber end wall 20 facing away from the combustion chamber 16. The shielding wall 58 fastened in such a particularly simple manner serves to shield the above-mentioned components from the heat generated in the combustion chamber 16. The outer tube 40 is surrounded radially on the outside by a heat transfer chamber 60, in which a liquid heat transfer medium flows. A second seal 60 is arranged on the second collar 52 of the outer tube 40, by means of which the outer tube 40 is sealed in the region of the clamping with the sections 54 and 56 of the housing from the heat transfer chamber 62. The second seal 60 is particularly tailored to the requirements of sealing the heat transfer chamber 62 from the space around the burner nozzle 14. The liquid heat transfer medium flowing in the heat transfer chamber 62 must not exit into the area around the burner nozzle 14. The second seal 60 is made of a material that is well fluid-carrying Seals space and at the same time only has to withstand relatively low temperatures.
Durch die oben beschriebene Gestaltung können die erste und die zweite Dich- tung 36 bzw. 60 unabhängig von Maßtoleranzen am Brenner 12 optimal abdichten und dabei ihr Material und ihre Form an die jeweils vorliegenden Dichtaufgaben optimal angepasst sein. Insbesondere können die Materialien der beiden Dichtungen 36 und 60 jeweils optimal an die vorherrschenden Temperaturbedingungen in den Dichtbereichen angepasst sein. The design described above allows the first and second seals 36 and 60 to be optimally sealed regardless of dimensional tolerances on the burner 12, and their material and shape can be optimally adapted to the respective sealing tasks. In particular, the materials of the two seals 36 and 60 can each be optimally adapted to the prevailing temperature conditions in the sealing areas.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
10 Heizgerät10 heater
12 Brenner in Gestalt eines Venturibrenners 14 Brennerdüse12 burners in the form of a Venturi burner 14 burner nozzle
16 Brennkammer16 combustion chamber
18 Brennkammerrohr18 combustion chamber tube
20 Brennkammerstirnwand20 combustion chamber end wall
22 Düsenkörper 24 Radialkanal22 nozzle body 24 radial channel
26 erste Öffnung26 first opening
28 Brennstoffzuleitung28 Fuel feed
30 zentrale Öffnung in der Brennkammerstirnwand30 central opening in the combustion chamber front wall
32 Radialkanal 34 zweite Öffnung32 radial channel 34 second opening
36 erste Dichtung36 first seal
38 von der Brenndüse abgewandter Endbereich38 end area facing away from the burning nozzle
40 Außenrohr40 outer tube
42 Ringspalt 44 dritte Öffnung42 annular gap 44 third opening
46 Prallscheibe46 baffle plate
48 erster Bund des Außenrohrs48 first collar of the outer tube
50 Flammrohr50 flame tube
52 zweiter Bund des Außenrohrs 54 erster Abschnitt eines Gehäuses52 second collar of the outer tube 54 first section of a housing
56 zweiter Abschnitt eines Gehäuses56 second section of a housing
58 Abschirmwand58 shielding wall
60 zweite Dichtung60 second seal
62 Wärmeträgerraum 62 heat transfer chamber

Claims

Ansprüche Expectations
1. Brenner (12), insbesondere Venturibrenner für ein mobiles Heizgerät (10), mit einer Brennerdüse (14) an einer Stirnseite einer Brennkammer (16), einem Brennkammerrohr (18), das die Brennkammer (16) umschließt, und einer Brennkammerstirnwand (20), die die Brennkammer (16) zu der Brennerdüse (14) hin begrenzt, dadurch gekennzeichnet, dass die Brennerdüse (14) alleinig an der Brennkammerstirnwand (20) gehaltert ist, das Brennkammerrohr (18) alleinig an seinem von der Brennkammerstirnwand (20) abgewandten Endbereich (38) an einem Außenrohr (40) gehaltert ist und zwischen der Brennkammerstirnwand (20) und dem Außenrohr (40) ein für Luft durchlässiger Ringspalt (42) ausgebildet ist.1. burner (12), in particular Venturi burner for a mobile heating device (10), with a burner nozzle (14) on one end of a combustion chamber (16), a combustion chamber tube (18) which surrounds the combustion chamber (16), and a combustion chamber end wall ( 20), which delimits the combustion chamber (16) towards the burner nozzle (14), characterized in that the burner nozzle (14) is held solely on the combustion chamber end wall (20), the combustion chamber tube (18) solely on its side from the combustion chamber end wall (20 ) facing away from the end region (38) on an outer tube (40) and between the combustion chamber end wall (20) and the outer tube (40) an air-permeable annular gap (42) is formed.
2. Brenner nach Anspruch 1 , dadurch gekennzeichnet, dass die Brennerdüse (14) mit mindestens einer ersten Öffnung (26) versehen ist, durch die Primärluft in die Brennkammer (16) eingeleitet werden kann.2. Burner according to claim 1, characterized in that the burner nozzle (14) is provided with at least a first opening (26) through which primary air can be introduced into the combustion chamber (16).
Brenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Brennkammerstirnwand (20) mit mindestens einer zweiten Öffnung (34) versehen ist, durch die Sekundärluft in die Brennkammer (16) eingeleitet werden kann.Burner according to claim 1 or 2, characterized in that the combustion chamber end wall (20) is provided with at least one second opening (34) through which secondary air can be introduced into the combustion chamber (16).
Brenner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Brennkammerrohr (18) mit mindestens einer dritten Öffnung (44) versehen ist, durch die Tertiärluft in die Brennkammer (16) eingeleitet werden kann. Burner according to one of claims 1 to 3, characterized in that the combustion chamber tube (18) is provided with at least a third opening (44) through which tertiary air can be introduced into the combustion chamber (16).
5. Brenner nach Anspruch 4, dadurch gekennzeichnet, dass in der Brennkammer (16) eine Prallscheibe (46) angeordnet ist und die dritte Öffnung (44) in dem Brennkammerrohr (18) derart ausgebildet ist, dass die Prallscheibe (46) mit Hilfe der Tertiärluft gekühlt werden kann.5. Burner according to claim 4, characterized in that a baffle plate (46) is arranged in the combustion chamber (16) and the third opening (44) in the combustion chamber tube (18) is formed such that the baffle plate (46) with the aid of Tertiary air can be cooled.
6. Brenner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zwischen der Brennerdüse (14) und der Brennkammerstirnwand (20) eine erste Dichtung (36) angeordnet ist.6. Burner according to one of claims 1 to 5, characterized in that a first seal (36) is arranged between the burner nozzle (14) and the combustion chamber end wall (20).
7. Brenner nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Außenrohr (40) an seinem der Brennerdüse (14) zugewandten Endbereich an einem Außengehäuse (54, 56) gehaltert ist und zwischen dem Außenrohr (40) und dem Außengehäuse (54, 56) eine zweite Dichtung (60) angeordnet ist.7. Burner according to one of claims 1 to 6, characterized in that the outer tube (40) at its end region facing the burner nozzle (14) is held on an outer housing (54, 56) and between the outer tube (40) and the outer housing ( 54, 56) a second seal (60) is arranged.
8. Brenner nach Anspruch 7, dadurch gekennzeichnet, dass an dem Außenrohr (40) an seinem der Brennerdüse (14) zugewandten Ende eine Abschirmwand (58) angeordnet ist, mittels der Bauelemente, die an der von der Brennkammer (16) abgewandten Seite der Brennerdüse (14) angeordnet sind, gegenüber der Brennkammerstirnwand (20) gegen Wärme abgeschirmt sind.8. Burner according to claim 7, characterized in that a shielding wall (58) is arranged on the outer tube (40) at its end facing the burner nozzle (14), by means of the components on the side facing away from the combustion chamber (16) Burner nozzle (14) are arranged, are shielded from the combustion chamber end wall (20) against heat.
9. Mobiles Heizgerät (10) mit einem Brenner (12) nach einem der Ansprüche 1 bis 8. 9. Mobile heater (10) with a burner (12) according to one of claims 1 to 8.
PCT/DE2003/002955 2002-09-06 2003-09-05 Burner, particularly venturi burner, comprising a combustion chamber pipe WO2004025178A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE10393705T DE10393705D2 (en) 2002-09-06 2003-09-05 Burner, in particular Venturi burner, with a combustion chamber tube
AU2003269699A AU2003269699A1 (en) 2002-09-06 2003-09-05 Burner, particularly venturi burner, comprising a combustion chamber pipe
DE50309895T DE50309895D1 (en) 2002-09-06 2003-09-05 BURNERS, ESPECIALLY VENTURIBRENNER, WITH A COMBUSTIBLE TUBE
EP03750323A EP1552218B1 (en) 2002-09-06 2003-09-05 Burner, particularly venturi burner, comprising a combustion chamber tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10241791A DE10241791B4 (en) 2002-09-06 2002-09-06 Burner, especially Venturi burner, with a combustion chamber tube
DE10241791.1 2002-09-06

Publications (1)

Publication Number Publication Date
WO2004025178A1 true WO2004025178A1 (en) 2004-03-25

Family

ID=31724578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/002955 WO2004025178A1 (en) 2002-09-06 2003-09-05 Burner, particularly venturi burner, comprising a combustion chamber pipe

Country Status (7)

Country Link
EP (1) EP1552218B1 (en)
AT (1) ATE396367T1 (en)
AU (1) AU2003269699A1 (en)
DE (3) DE10241791B4 (en)
ES (1) ES2307967T3 (en)
RU (1) RU2309330C2 (en)
WO (1) WO2004025178A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104271A1 (en) * 2006-03-14 2007-09-20 Webasto Ag Combined heating/warm water system for mobile applications
CN100458281C (en) * 2006-07-05 2009-02-04 山东大学 Evaporation mixing combustion mode for liquid fuel and combustion chamber therefor
CN114963168A (en) * 2022-06-27 2022-08-30 杭州富丽达热电有限公司 Clean coal high-efficient burner

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033618B4 (en) * 2004-07-12 2016-11-03 Webasto Ag vehicle heater
DE102006003150B4 (en) * 2006-01-23 2009-04-16 Webasto Ag Additional heater with a burner of injection type
DE102013220653B4 (en) * 2013-10-14 2019-12-05 Eberspächer Climate Control Systems GmbH & Co. KG Combustion chamber assembly, in particular for an evaporator burner
CN107379924A (en) * 2017-09-04 2017-11-24 郑州振资汽车配件有限公司 Baffle assembly for the empty warm heater of parking
CN108788775B (en) * 2018-08-03 2019-11-08 重庆宏钢数控机床有限公司 A kind of manufacture craft of outer protective cover bed piece

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB849179A (en) * 1959-01-14 1960-09-21 Stewart Warner Corp Vehicle heater burner
JPS6138316A (en) * 1984-07-30 1986-02-24 Sanyo Electric Co Ltd Liquid fuel combustion device
US4818219A (en) * 1987-04-22 1989-04-04 Webasto Ag Fahrzeugtechnik Vaporization burner
US5082175A (en) * 1989-01-10 1992-01-21 Webasto Ag Fahrzeugtechnik Heating device, particularly vehicle heating device
WO2001079755A1 (en) * 2000-04-17 2001-10-25 Webasto Thermosysteme International Gmbh Atomizing burner for a heating device of a vehicle
DE10019890A1 (en) 2000-04-20 2001-10-25 Webasto Thermosysteme Gmbh Burner especially for motor vehicle's stand-alone heater has flame tube with perforations in side wall corresponding to defined pattern and with holes of different sizes selected so that oscillation frequencies are automatically eliminated

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318054C2 (en) * 1982-05-21 1986-10-09 Fa. J. Eberspächer, 7300 Esslingen Burners for small air heaters for heating portable rooms
DE3942747A1 (en) * 1989-12-22 1991-06-27 Eberspaecher J VEHICLE HEATER, ESPECIALLY MOTOR VEHICLE ADDITIONAL HEATER
DE10039152A1 (en) * 2000-08-06 2002-02-14 Webasto Thermosysteme Gmbh atomizer burner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB849179A (en) * 1959-01-14 1960-09-21 Stewart Warner Corp Vehicle heater burner
JPS6138316A (en) * 1984-07-30 1986-02-24 Sanyo Electric Co Ltd Liquid fuel combustion device
US4818219A (en) * 1987-04-22 1989-04-04 Webasto Ag Fahrzeugtechnik Vaporization burner
US5082175A (en) * 1989-01-10 1992-01-21 Webasto Ag Fahrzeugtechnik Heating device, particularly vehicle heating device
WO2001079755A1 (en) * 2000-04-17 2001-10-25 Webasto Thermosysteme International Gmbh Atomizing burner for a heating device of a vehicle
DE10019890A1 (en) 2000-04-20 2001-10-25 Webasto Thermosysteme Gmbh Burner especially for motor vehicle's stand-alone heater has flame tube with perforations in side wall corresponding to defined pattern and with holes of different sizes selected so that oscillation frequencies are automatically eliminated

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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007104271A1 (en) * 2006-03-14 2007-09-20 Webasto Ag Combined heating/warm water system for mobile applications
CN100458281C (en) * 2006-07-05 2009-02-04 山东大学 Evaporation mixing combustion mode for liquid fuel and combustion chamber therefor
CN114963168A (en) * 2022-06-27 2022-08-30 杭州富丽达热电有限公司 Clean coal high-efficient burner
CN114963168B (en) * 2022-06-27 2022-11-29 杭州富丽达热电有限公司 Clean coal high-efficient burner

Also Published As

Publication number Publication date
ES2307967T3 (en) 2008-12-01
EP1552218B1 (en) 2008-05-21
EP1552218A1 (en) 2005-07-13
RU2309330C2 (en) 2007-10-27
DE50309895D1 (en) 2008-07-03
ATE396367T1 (en) 2008-06-15
RU2005109936A (en) 2005-10-27
DE10241791B4 (en) 2004-09-23
DE10393705D2 (en) 2005-07-21
DE10241791A1 (en) 2004-03-18
AU2003269699A1 (en) 2004-04-30

Similar Documents

Publication Publication Date Title
EP0235277B1 (en) Device for burning oxidizable components in a carrier gas to be cleaned
EP0164576B1 (en) Industrial burner for gaseous or liquid fuels
EP1845307A1 (en) Oil pre-mix burner and operating method therefor
EP1552218B1 (en) Burner, particularly venturi burner, comprising a combustion chamber tube
DE10200524C5 (en) Combustor assembly, in particular for a vehicle heater
WO2010121864A1 (en) Burner assembly
WO2009130155A2 (en) Oil premix burner
EP0128463B1 (en) Space heating apparatus for small spaces
EP0534104B1 (en) Radiant tube with jacket
AT404295B (en) Radiant burner
DD226588A1 (en) DESIGNED SCREEN
DE10221495B4 (en) Burner for a heater
DE102004008358B4 (en) vehicle heater
EP2679897B1 (en) Oil pre-mix burner with swirler
DE102004009787B3 (en) Mixing device for oil or gas fan burner has burner tube with endface against surface on endface of support tube
DE4412185B4 (en) Burners for liquid or gaseous fuels, in particular for oil
DE10144400A1 (en) Device for introducing a fuel / air mixture into a burner and method for mounting such a device
DE102011051044B3 (en) Combustion chamber arrangement for vaporizing burner of e.g. pre-heater in vehicle, has chamber, where burner wall and/or fastening portion of chamber have fastening structures comprising profile with diameter increasing in axial direction
DE19741508A1 (en) Mixer for oil or gas burner
EP1002993B1 (en) Boiler for liquid fuels
AT3684U1 (en) MIXING DEVICE FOR GAS AND OIL BURNERS
EP2201300B1 (en) Burner for a Turbomachine and a Turbomachine
DE10207953A1 (en) Heater, in particular for a vehicle
DE102021111187A1 (en) Hydrogen gas burner device
DE102014110607A1 (en) lance arrangement

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2003750323

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2005109936

Country of ref document: RU

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: 2003750323

Country of ref document: EP

REF Corresponds to

Ref document number: 10393705

Country of ref document: DE

Date of ref document: 20050721

Kind code of ref document: P

WWE Wipo information: entry into national phase

Ref document number: 10393705

Country of ref document: DE

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Ref document number: JP

WWG Wipo information: grant in national office

Ref document number: 2003750323

Country of ref document: EP