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WO2024160841A1 - Cooling device for a burner - Google Patents

Cooling device for a burner Download PDF

Info

Publication number
WO2024160841A1
WO2024160841A1 PCT/EP2024/052265 EP2024052265W WO2024160841A1 WO 2024160841 A1 WO2024160841 A1 WO 2024160841A1 EP 2024052265 W EP2024052265 W EP 2024052265W WO 2024160841 A1 WO2024160841 A1 WO 2024160841A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling
air
burner
air duct
ignition means
Prior art date
Application number
PCT/EP2024/052265
Other languages
German (de)
French (fr)
Inventor
Daniel Koenig
Günter Palmer
Original Assignee
Tenneco 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 Tenneco Gmbh filed Critical Tenneco Gmbh
Publication of WO2024160841A1 publication Critical patent/WO2024160841A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner

Definitions

  • the invention relates to a cooling device for a burner of an exhaust system comprising a burner housing with a receptacle for an ignition means and with an air duct for supplying a combustion chamber delimited by the burner housing with air.
  • a burner with an ignition device is already known from DE 10 2021 001 585 A1.
  • the ignition device has an external thread by means of which the ignition device is screwed to the chamber element.
  • cooling fins are applied to the spark plug thread.
  • the invention is based on the object of designing and arranging a cooling device for a burner in such a way that improved function is ensured.
  • a cooling air channel is provided which branches off at a branch on the air channel upstream of the combustion chamber and opens into the area of the receptacle for the purpose of supplying an ignition agent and/or the receptacle with cooling air. This ensures that the part of the combustion air to be supplied which is used as cooling air is preheated and thus ensures an increase in the exhaust gas temperature of the burner. In addition, the ignition agent is protected from excessive heat.
  • a cooling device with an ignition means fastened to the holder, wherein at least a part of the ignition means or a part of the holder can be supplied with cooling air.
  • the object is achieved by using combustion air for a combustion chamber of a burner for cooling an ignition means of the burner and by a method for operating a burner in which the combustion air supplied to the combustion chamber of the burner is preheated by using it as a coolant for cooling an ignition means of the burner.
  • a cooling chamber is provided in the area of the holder, into which the cooling air channel opens.
  • the cooling chamber is supplied with cooling air, so that the ignition agent located there is also supplied with cooling air.
  • the cooling chamber has a return flow opening through which the cooling air is returned to the air duct or discharged into the combustion chamber.
  • the combustion chamber in addition to the air inlet, has a second air inlet in the area of the cooling chamber for the part of the combustion air that serves as cooling air.
  • a warm air duct is provided which is connected to the return flow opening and opens into the air duct at an outlet. The cooling air is thus returned to the air duct and fed centrally to the combustion chamber with the remaining air.
  • the outlet is arranged downstream of the branch on the air duct. Downstream of the branch, there is a lower line pressure so that the cooling air can be returned to the air duct. If necessary, a throttle is provided in the air duct between the branch and the outlet so that the pressure in the warm air duct is sufficient for return.
  • the air injection nozzle can be in flow connection with the return flow opening.
  • the air injection nozzle can also be designed to be regulated or controlled so that the air mass flow supplied via the return flow opening can be supplied in a defined manner.
  • cooling air is fed into the combustion chamber via the air injection nozzle. This also serves to oxidize or burn the fuel. It can be of particular importance for the present invention if several ignition means are provided, each ignition means being in flow connection with a cooling air channel.
  • the ignition means can be connected in series or in parallel with respect to the cooling air.
  • the ignition means and/or the receptacle are at least partially placed in the cooling chamber. This ensures optimal cooling.
  • Figure 1 is a schematic diagram of a burner with combustion chamber
  • Figure 2 is a schematic diagram according to Fig. 1 with air injection nozzle.
  • Fig. 1 shows a burner 1.
  • the burner 1 has a burner housing 1.1 with a holder 1.2 for an ignition agent 2, a burner nozzle 5 and an air duct 1.3.
  • the air duct 1.3 serves to supply the burner nozzle 5 or a combustion chamber 5.3 delimited by the burner housing 1.1 with ambient air 1.8.
  • the air duct 1.3 and a fuel line 5.1 for fuel 5.2 connect to the burner nozzle 5.
  • a cooling device 3 is provided for the ignition agent 2.
  • the cooling device 3 has a cooling air duct 1.5 which branches off from the air duct 1.3 upstream of the combustion chamber 5.3 at a branch 1.4 and opens out in the area of the holder 1.2 for the ignition agent 2.
  • At least part of the ignition means 2 and at least part of the holder 1 .2 are supplied with cooling air 1 .6 via the air duct 1 .3.
  • a cooling chamber 2.1 is provided, into which the cooling air duct 1.5 opens so that the branched cooling air 1.6 can enter there.
  • the cooling chamber 2.1 has a return flow opening 2.2, through which the cooling air 1.6 is returned to the air duct 1.3.
  • a warm air duct is nal 2.4 is provided, which connects to the return flow opening 2.2 and opens into the air duct 1.3 at an opening 2.5 downstream of the branch 1.4. The heated cooling air 1.7 is thus fed back into the combustion air.
  • the cooling air 1.6 can be directed from the cooling chamber 2.1 directly into the combustion chamber 5.3.
  • the return flow opening 2.2 is in flow connection with the combustion chamber 5.3.
  • an air injection nozzle 4 is provided at the return flow opening 2.2, through which heated cooling air 1.7 is injected into the combustion chamber 5.3.
  • the heated cooling air 1.7 is fed directly into the combustion chamber 5.3.
  • second cooling air duct 1.5' which branches off from the air duct 1.3 at a branch 1.4' and opens into the area of a further cooling chamber 2.1' or an ignition device 2'.
  • Burner cooling device .1 Burner housing .2 Holder .3 Air duct .3‘ Air duct .4 Branch ,4‘ Branch .5 Cooling air duct .5‘ Cooling air duct .6 Cooling air .7 Heated cooling air .8 Ambient air Ignition device ‘ Ignition device .1 Cooling chamber .2 Return flow opening .4 Warm air duct .5 Cooling device mouth Air injection nozzle, air metering, burner nozzle, fuel and air injection nozzle.1 Fuel line .2 Fuel .3 Combustion chamber

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Gas Burners (AREA)

Abstract

The invention relates to a cooling device (3) for a burner (1), consisting of a housing (1.1) with a receiving area (1.2) for an ignition means (2) and an air channel (1.3) for supplying air to a combustion chamber (5.3) delimited by the burner housing (1.1), wherein a cooling air channel (1.5) is provided which branches off from the air channel (1.3) at a branch (1.4) upstream of the combustion chamber (5.3) and opens into the region of the receiving area (1.2) for the purpose of supplying cooling air (1.6) to an ignition means (2) and/or the receiving area (1.2).

Description

Kühleinrichtung für einen Brenner Cooling device for a burner
Die Erfindung bezieht sich auf eine Kühleinrichtung für einen Brenner einer Abgasanlage bestehend aus einem Brennergehäuse mit einer Aufnahme für ein Zündmittel und mit einem Luftkanal zur Versorgung einer vom Brennergehäuse begrenzten Brennkammer mit Luft. The invention relates to a cooling device for a burner of an exhaust system comprising a burner housing with a receptacle for an ignition means and with an air duct for supplying a combustion chamber delimited by the burner housing with air.
Es ist bereits ein Brenner mit einer Zündeinrichtung aus der DE 10 2021 001 585 A1 bekannt. Die Zündeinrichtung weist ein Außengewinde auf, mittels dessen die Zündeinrichtung mit dem Kammerelement verschraubt ist. Um eine hinreichende Kühlung der Zündeinrichtung zu realisieren, sind auf das Zündkerzengewinde Kühlrippen aufgebracht. A burner with an ignition device is already known from DE 10 2021 001 585 A1. The ignition device has an external thread by means of which the ignition device is screwed to the chamber element. In order to achieve sufficient cooling of the ignition device, cooling fins are applied to the spark plug thread.
Aus der DE 561 770 A ist eine Zündkerze für einen Kolbenmotor bekannt, die Kühlmittelkanäle für Kühlmittel aufweist. From DE 561 770 A a spark plug for a piston engine is known which has coolant channels for coolant.
Der Erfindung liegt die Aufgabe zugrunde, eine Kühleinrichtung für einen Brenner derart auszubilden und anzuordnen, dass eine verbesserte Funktion gewährleistet ist. The invention is based on the object of designing and arranging a cooling device for a burner in such a way that improved function is ensured.
Gelöst wird die Aufgabe erfindungsgemäß dadurch, dass ein Kühlluftkanal vorgesehen ist, der an dem Luftkanal stromauf der Brennkammer an einem Abzweig abzweigt und in den Bereich der Aufnahme mündet zwecks Versorgung eines Zündmittels und/oder der Aufnahme mit Kühlluft. Hierdurch wird erreicht, dass der Teil der zuzuführenden Verbrennungsluft, der als Kühlluft benutzt wird, vorgewärmt ist und somit eine Erhöhung der Abgastemperatur des Brenners gewährleistet. Zudem wird das Zündmittel vor übermäßiger Hitzeeinwirkung geschützt. The object is achieved according to the invention in that a cooling air channel is provided which branches off at a branch on the air channel upstream of the combustion chamber and opens into the area of the receptacle for the purpose of supplying an ignition agent and/or the receptacle with cooling air. This ensures that the part of the combustion air to be supplied which is used as cooling air is preheated and thus ensures an increase in the exhaust gas temperature of the burner. In addition, the ignition agent is protected from excessive heat.
Gelöst wird die Aufgabe erfindungsgemäß auch durch eine Kühleinrichtung mit einem an der Aufnahme befestigten Zündmittel, wobei zumindest ein Teil des Zündmittels oder ein Teil der Aufnahme mit Kühlluft versorgbar ist. The object is also achieved according to the invention by a cooling device with an ignition means fastened to the holder, wherein at least a part of the ignition means or a part of the holder can be supplied with cooling air.
Demgemäß wird die Aufgabe gelöst durch Verwendung von Verbrennungsluft für eine Brennkammer eines Brenners zur Kühlung eines Zündmittels des Brenners sowie durch ein Verfahren zum Betrieb eines Brenners, bei dem die Verbrennungsluft, die der Brennkammer des Brenners zugeführt wird, vorgewärmt wird durch Verwendung als Kühlmittel zum Kühlen eines Zündmittels des Brenners. Accordingly, the object is achieved by using combustion air for a combustion chamber of a burner for cooling an ignition means of the burner and by a method for operating a burner in which the combustion air supplied to the combustion chamber of the burner is preheated by using it as a coolant for cooling an ignition means of the burner.
Vorteilhaft kann es hierzu auch sein, wenn im Bereich der Aufnahme eine Kühlkammer vorgesehen ist, in der der Kühlluftkanal mündet. Die Kühlkammer wird mit Kühlluft versorgt, so dass gleichzeitig das dort befindliche Zündmittel mit Kühlluft versorgt wird. It can also be advantageous if a cooling chamber is provided in the area of the holder, into which the cooling air channel opens. The cooling chamber is supplied with cooling air, so that the ignition agent located there is also supplied with cooling air.
Ergänzend kann es vorteilhaft sein, wenn die Kühlkammer eine Rückströmöffnung aufweist, über die die Kühlluft zurückgeführt wird in den Luftkanal oder abgeführt wird in die Brennkammer. Die Brennkammer hat in diesem Fall ergänzend zum Lufteinlass einen zweiten Lufteinlass im Bereich der Kühlkammer für den als Kühlluft dienenden Teil der Verbrennungsluft. In addition, it can be advantageous if the cooling chamber has a return flow opening through which the cooling air is returned to the air duct or discharged into the combustion chamber. In this case, in addition to the air inlet, the combustion chamber has a second air inlet in the area of the cooling chamber for the part of the combustion air that serves as cooling air.
Ferner kann es vorteilhaft sein, wenn ein Warmluftkanal vorgesehen ist, der an die Rückströmöffnung anschließt und in dem Luftkanal an einer Mündung mündet. Somit wird die Kühlluft in den Luftkanal zurückgeführt und zentral mit der übrigen Luft der Brennkammer zugeführt. It can also be advantageous if a warm air duct is provided which is connected to the return flow opening and opens into the air duct at an outlet. The cooling air is thus returned to the air duct and fed centrally to the combustion chamber with the remaining air.
Vorteilhaft kann es auch sein, wenn die Mündung stromab des Abzweigs am Luftkanal geordnet ist. Stromab des Abzweigs herrscht ein niedrigerer Leitungsdruck, so dass die Kühlluft in den Luftkanal zurückgeführt werden kann. Ggf. ist zwischen dem Abzweig und der Mündung eine Drossel im Luftkanal vorgesehen, so dass der Druck im Warmluftkanal ausreicht zum Zurückführen. It can also be advantageous if the outlet is arranged downstream of the branch on the air duct. Downstream of the branch, there is a lower line pressure so that the cooling air can be returned to the air duct. If necessary, a throttle is provided in the air duct between the branch and the outlet so that the pressure in the warm air duct is sufficient for return.
Dabei kann es vorteilhafterweise vorgesehen sein, dass eine Luft-Einspritzdüse zum Versorgen der Brennkammer mit Kühlluft vorgesehen ist. Die Luft-Einspritzdüse kann mit der Rückströmöffnung in Strömungsverbindung stehen. Die Luft- Einspritzdüse kann auch geregelt bzw. gesteuert ausgebildet sein, so dass der über die Rückströmöffnung zugeführte Luftmassestrom definiert zuführbar ist. Ergänzend zu dem über den Brenner eintretenden Luft-Kraftstoffgemisch wird über die Luft-Einspritzdüse Kühlluft in die Brennkammer geführt. Diese dient zusätzlich zur Oxidation bzw. Verbrennung des Kraftstoffs. Von besonderer Bedeutung kann für die vorliegende Erfindung sein, wenn mehrere Zündmittel vorgesehen sind, wobei jedes Zündmittel mit einem Kühlluftkanal in Strömungsverbindung steht. Die Zündmittel können dabei mit Bezug zur Kühlluft in Reihe oder parallel geschaltet sein. It can be advantageous to provide an air injection nozzle to supply the combustion chamber with cooling air. The air injection nozzle can be in flow connection with the return flow opening. The air injection nozzle can also be designed to be regulated or controlled so that the air mass flow supplied via the return flow opening can be supplied in a defined manner. In addition to the air-fuel mixture entering via the burner, cooling air is fed into the combustion chamber via the air injection nozzle. This also serves to oxidize or burn the fuel. It can be of particular importance for the present invention if several ignition means are provided, each ignition means being in flow connection with a cooling air channel. The ignition means can be connected in series or in parallel with respect to the cooling air.
Im Zusammenhang mit der erfindungsgemäßen Ausbildung und Anordnung kann es von Vorteil sein, wenn das Zündmittel und/oder die Aufnahme zumindest teilweise in der Kühlkammer platziert ist. Somit ist eine optimale Kühlung gewährleistet. In connection with the design and arrangement according to the invention, it can be advantageous if the ignition means and/or the receptacle are at least partially placed in the cooling chamber. This ensures optimal cooling.
Weitere Vorteile und Einzelheiten der Erfindung sind in den Patentansprüchen und in der Beschreibung erläutert und in den Figuren dargestellt. Es zeigen: Further advantages and details of the invention are explained in the patent claims and in the description and shown in the figures. They show:
Figur 1 eine Prinzipskizze eines Brenners mit Brennkammer und Figure 1 is a schematic diagram of a burner with combustion chamber and
Figur 2 eine Prinzipskizze nach Fig. 1 mit Luft-Einspritzdüse. Figure 2 is a schematic diagram according to Fig. 1 with air injection nozzle.
Fig. 1 zeigt einen Brenner 1. Der Brenner 1 weist ein Brennergehäuse 1.1 mit einer Aufnahme 1 .2 für ein Zündmittel 2, eine Brennerdüse 5 und einen Luftkanal 1 .3 auf. Der Luftkanal 1 .3 dient zur Versorgung der Brennerdüse 5 bzw. einen vom Brennergehäuse 1.1 begrenzten Brennkammer 5.3 mit Umgebungsluft 1 .8. Der Luftkanal 1 .3 sowie eine Kraftstoffleitung 5.1 für Kraftstoff 5.2 schließen an die Brennerdüse 5 an. Zudem ist eine Kühleinrichtung 3 für das Zündmittel 2 vorgesehen. Die Kühleinrichtung 3 weist einen Kühlluftkanal 1 .5 auf, der an dem Luftkanal 1 .3 stromauf der Brennkammer 5.3 an einem Abzweig 1 .4 abzweigt und im Bereich der Aufnahme 1 .2 für das Zündmittel 2 mündet. Über den Luftkanal 1.3 wird zumindest ein Teil des Zündmittels 2 und zumindest ein Teil der Aufnahme 1 .2 mit Kühlluft 1 .6 versorgt. Fig. 1 shows a burner 1. The burner 1 has a burner housing 1.1 with a holder 1.2 for an ignition agent 2, a burner nozzle 5 and an air duct 1.3. The air duct 1.3 serves to supply the burner nozzle 5 or a combustion chamber 5.3 delimited by the burner housing 1.1 with ambient air 1.8. The air duct 1.3 and a fuel line 5.1 for fuel 5.2 connect to the burner nozzle 5. In addition, a cooling device 3 is provided for the ignition agent 2. The cooling device 3 has a cooling air duct 1.5 which branches off from the air duct 1.3 upstream of the combustion chamber 5.3 at a branch 1.4 and opens out in the area of the holder 1.2 for the ignition agent 2. At least part of the ignition means 2 and at least part of the holder 1 .2 are supplied with cooling air 1 .6 via the air duct 1 .3.
Im Bereich der Aufnahme 1.2 ist eine Kühlkammer 2.1 vorgesehen, in die der Kühlluftkanal 1 .5 mündet, so dass die abgezweigte Kühlluft 1 .6 dort eintreten kann. Die Kühlkammer 2.1 weist eine Rückströmöffnung 2.2 auf, über die die Kühlluft 1 .6 in den Luftkanal 1 .3 zurückgeführt wird. Hierzu ist ein Warmluftka- nal 2.4 vorgesehen, der an die Rückströmöffnung 2.2 anschließt und in dem Luftkanal 1.3 an einer Mündung 2.5 stromab des Abzweigs 1.4 mündet. Die erwärmte Kühlluft 1 .7 wird somit wieder der Verbrennungsluft zugeführt. In the area of the holder 1.2, a cooling chamber 2.1 is provided, into which the cooling air duct 1.5 opens so that the branched cooling air 1.6 can enter there. The cooling chamber 2.1 has a return flow opening 2.2, through which the cooling air 1.6 is returned to the air duct 1.3. For this purpose, a warm air duct is nal 2.4 is provided, which connects to the return flow opening 2.2 and opens into the air duct 1.3 at an opening 2.5 downstream of the branch 1.4. The heated cooling air 1.7 is thus fed back into the combustion air.
Alternativ kann gemäß Ausführungsbeispiel Fig. 2 die Kühlluft 1 .6 ausgehend von der Kühlkammer 2.1 unmittelbar in die Brennkammer 5.3 geleitet werden.Alternatively, according to the embodiment shown in Fig. 2, the cooling air 1.6 can be directed from the cooling chamber 2.1 directly into the combustion chamber 5.3.
Hierzu steht die Rückströmöffnung 2.2 mit der Brennkammer 5.3 in Strömungsverbindung. Nach Ausführungsbeispiel Fig. 2 ist an der Rückströmöffnung 2.2 eine Luft-Einspritzdüse 4 vorgesehen, über die erwärmte Kühlluft 1.7 in die Brennkammer 5.3 eingedüst wird. In diesem Fall wird ergänzend zu dem über den Brenner 5 eintretenden Luft-Kraftstoffgemisch die erwärmte Kühlluft 1 .7 unmittelbar in die Brennkammer 5.3 geführt. For this purpose, the return flow opening 2.2 is in flow connection with the combustion chamber 5.3. According to the embodiment in Fig. 2, an air injection nozzle 4 is provided at the return flow opening 2.2, through which heated cooling air 1.7 is injected into the combustion chamber 5.3. In this case, in addition to the air-fuel mixture entering via the burner 5, the heated cooling air 1.7 is fed directly into the combustion chamber 5.3.
Zudem ist ein zweiter Kühlluftkanal 1 .5‘ auf, der an dem Luftkanal 1 .3 an einem Abzweig 1.4‘ abzweigt und im Bereich einer weiteren Kühlkammer 2.1 ‘ bzw. eines Zündmittels 2‘ mündet. In addition, there is a second cooling air duct 1.5', which branches off from the air duct 1.3 at a branch 1.4' and opens into the area of a further cooling chamber 2.1' or an ignition device 2'.
Brenner Kühleinrichtung .1 Brennergehäuse .2 Aufnahme .3 Luftkanal .3‘ Luftkanal .4 Abzweig ,4‘ Abzweig .5 Kühlluftkanal .5‘ Kühlluftkanal .6 Kühlluft .7 erwärmte Kühlluft .8 Umgebungsluft Zündmittel ‘ Zündmittel .1 Kühlkammer .2 Rückströmöffnung .4 Warmluftkanal .5 Mündung Kühleinrichtung Luft-Einspritzdüse, Luftdosierung, Brennerdüse, Kraftstoff- und Lufteinspritzdüse.1 Kraftstoffleitung .2 Kraftstoff .3 Brennkammer Burner cooling device .1 Burner housing .2 Holder .3 Air duct .3‘ Air duct .4 Branch ,4‘ Branch .5 Cooling air duct .5‘ Cooling air duct .6 Cooling air .7 Heated cooling air .8 Ambient air Ignition device ‘ Ignition device .1 Cooling chamber .2 Return flow opening .4 Warm air duct .5 Cooling device mouth Air injection nozzle, air metering, burner nozzle, fuel and air injection nozzle.1 Fuel line .2 Fuel .3 Combustion chamber

Claims

Patentansprüche Patent claims
1. Kühleinrichtung (3) für einen Brenner (1) mit aus einem Brennergehäuse (1.1) und mit einem Luftkanal (1.3) zur Versorgung einer vom Brennergehäuse (1.1) begrenzten Brennkammer (5.3) mit Luft, wobei das Brennergehäuse (1.1) eine Aufnahme (1.2) für ein Zündmittel (2) aufweist, dadurch gekennzeichnet, dass zwecks Versorgung eines Zündmittels (2) und/oder der Aufnahme (1.2) mit Kühlluft (1.6) ein Kühlluftkanal (1.5) vorgesehen ist, der an dem Luftkanal (1.3) an einem Abzweig (1.4) abzweigt und im Bereich der Aufnahme (1.2) mündet. 1. Cooling device (3) for a burner (1) with a burner housing (1.1) and with an air duct (1.3) for supplying a combustion chamber (5.3) delimited by the burner housing (1.1) with air, wherein the burner housing (1.1) has a receptacle (1.2) for an ignition means (2), characterized in that for the purpose of supplying an ignition means (2) and/or the receptacle (1.2) with cooling air (1.6), a cooling air duct (1.5) is provided which branches off from the air duct (1.3) at a branch (1.4) and opens out in the region of the receptacle (1.2).
2. Kühleinrichtung (3) nach Anspruch 1 , dadurch gekennzeichnet, dass im Bereich der Aufnahme (1.2) eine Kühlkammer (2.1) vorgesehen ist, in der der Kühlluftkanal (1.5) mündet. 2. Cooling device (3) according to claim 1, characterized in that in the region of the receptacle (1.2) a cooling chamber (2.1) is provided, into which the cooling air duct (1.5) opens.
3. Kühleinrichtung (3) nach Anspruch 2 , dadurch gekennzeichnet, dass die Kühlkammer (2.1) eine Rückströmöffnung (2.2) aufweist, über die erwärmte Kühlluft (1.7) zurückgeführt wird in den Luftkanal (1.3) oder abgeführt wird in die Brennkammer (5.3). 3. Cooling device (3) according to claim 2, characterized in that the cooling chamber (2.1) has a return flow opening (2.2) through which heated cooling air (1.7) is returned to the air duct (1.3) or is discharged into the combustion chamber (5.3).
4. Kühleinrichtung (3) nach Anspruch 3, dadurch gekennzeichnet, dass ein Warmluftkanal (2.4) vorgesehen ist, der an die Rückströmöffnung (2.2) anschließt und in dem Luftkanal (1.3) an einer Mündung (2.5) mündet. 4. Cooling device (3) according to claim 3, characterized in that a warm air duct (2.4) is provided which connects to the return flow opening (2.2) and opens into the air duct (1.3) at an opening (2.5).
5. Kühleinrichtung (3) nach Anspruch 4, dadurch gekennzeichnet, dass die Mündung (2.5) stromab des Abzweigs (1.4) am Luftkanal (1.3) angeordnet ist. 6. Kühleinrichtung (3) nach einem der vorhergehenden Ansprüche 3 - 5, dadurch gekennzeichnet, dass eine Luft-Einspritzdüse (4) zum Versorgen der Brennkammer (5.3) mit Kühlluft (1.5. Cooling device (3) according to claim 4, characterized in that the mouth (2.5) is arranged downstream of the branch (1.4) on the air duct (1.3). 6. Cooling device (3) according to one of the preceding claims 3 - 5, characterized in that an air injection nozzle (4) for supplying the combustion chamber (5.3) with cooling air (1.
6, 1.7) vorgesehen ist. 6, 1.7).
7. Kühleinrichtung (3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mehrere Zündmittel (2, 2‘) vorgesehen sind, wobei jedes Zündmittel (2.2‘) mit dem mindestens einen Kühlluftkanal (1.5, 1.5‘) in Strömungsverbindung steht. 7. Cooling device (3) according to one of the preceding claims, characterized in that a plurality of ignition means (2, 2') are provided, wherein each ignition means (2.2') is in flow connection with the at least one cooling air channel (1.5, 1.5').
8. Kühleinrichtung (3) nach einem der vorhergehenden Ansprüche mit einem an der Aufnahme (1.2) befestigten Zündmittel (2), wobei zumindest ein Teil des Zündmittels (2) oder ein Teil der Aufnahme (1.2) mit Kühlluft versorgbar ist. 8. Cooling device (3) according to one of the preceding claims with an ignition means (2) fastened to the holder (1.2), wherein at least a part of the ignition means (2) or a part of the holder (1.2) can be supplied with cooling air.
9. Kühleinrichtung (3) nach Anspruch 8, dadurch gekennzeichnet, dass das Zündmittel (2) und/oder die Aufnahme (1.2) zumindest teilweise in der Kühlkammer (2.1) platziert ist. 9. Cooling device (3) according to claim 8, characterized in that the ignition means (2) and/or the receptacle (1.2) is at least partially placed in the cooling chamber (2.1).
10. Verwendung von Verbrennungsluft für eine Brennkammer (5.3) eines Brenners (1) zur Kühlung eines Zündmittels (2) des Brenners (1). 10. Use of combustion air for a combustion chamber (5.3) of a burner (1) for cooling an ignition means (2) of the burner (1).
11. Verfahren zum Betrieb eines Brenners (1 ), dadurch gekennzeichnet, dass die Verbrennungsluft, die der Brennkammer (5.3) des Brenners (1) zugeführt wird, vorgewärmt wird durch Verwendung als Kühlmittel zum Kühlen eines Zündmittels (2) des Brenners (1). 11. Method for operating a burner (1), characterized in that the combustion air which is supplied to the combustion chamber (5.3) of the burner (1) is preheated by using it as a coolant for cooling an ignition means (2) of the burner (1).
PCT/EP2024/052265 2023-01-31 2024-01-30 Cooling device for a burner WO2024160841A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE561770C (en) 1930-12-06 1932-10-18 Adolphe Kegresse Spark plug
DE4209470A1 (en) * 1992-03-24 1993-04-08 Daimler Benz Ag Exhaust-driven burner for regenerator particle filter - has after burner chamber with partial exhaust flow, between combustion and mixer chambers
EP3444459A1 (en) * 2017-08-17 2019-02-20 Guizhou Huangdi Diesel Engine Cleaner Co., Ltd. Exhaust gas treatment system for diesel engine
DE102021001585A1 (en) 2021-03-25 2022-09-29 Mercedes-Benz Group AG Burner for an exhaust tract of a motor vehicle and motor vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE561770C (en) 1930-12-06 1932-10-18 Adolphe Kegresse Spark plug
DE4209470A1 (en) * 1992-03-24 1993-04-08 Daimler Benz Ag Exhaust-driven burner for regenerator particle filter - has after burner chamber with partial exhaust flow, between combustion and mixer chambers
EP3444459A1 (en) * 2017-08-17 2019-02-20 Guizhou Huangdi Diesel Engine Cleaner Co., Ltd. Exhaust gas treatment system for diesel engine
DE102021001585A1 (en) 2021-03-25 2022-09-29 Mercedes-Benz Group AG Burner for an exhaust tract of a motor vehicle and motor vehicle

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