EP0789189B1 - Brenner für flüssigen oder gasförmigen Brennstoff, insbesondere für Öl - Google Patents
Brenner für flüssigen oder gasförmigen Brennstoff, insbesondere für Öl Download PDFInfo
- Publication number
- EP0789189B1 EP0789189B1 EP96118804A EP96118804A EP0789189B1 EP 0789189 B1 EP0789189 B1 EP 0789189B1 EP 96118804 A EP96118804 A EP 96118804A EP 96118804 A EP96118804 A EP 96118804A EP 0789189 B1 EP0789189 B1 EP 0789189B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- burner according
- chamber
- nozzle
- orifice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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
-
- 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
- F23D2900/11402—Airflow diaphragms at burner nozzle
-
- 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
- F23D2900/11403—Flame surrounding tubes in front of burner nozzle
Definitions
- the invention relates to a burner in the preamble of claim 1 type for liquid or gaseous fuels, especially for oil.
- DE 295 18 919 U1 is a burner of the type in question kind known. It has a nozzle for feeding of fuel on from an outlet to Air is fed into the outlet area of the nozzle is concentrically surrounded.
- a chamber in the air flows axially through inlet openings.
- the Chamber has in the area of Swirl blades have a large cross section, so the flow rate the air is correspondingly low.
- the effect of the swirl blades is very limited, so the speed of rotation of the air as it exits is correspondingly low from the outlet opening. This also results in a slight mixing of the air flowing out of the outlet opening with the Fuel coming from in the area of the outlet opening arranged nozzle emerges. This is the combustion not optimal.
- the invention has for its object a To create burners of the type in question, in which the Mixing of the supplied air and fuel and thus the combustion significantly improved and the education of NOx is reduced to a minimum.
- the basic idea of this teaching is that Air already with one when entering the chamber Impact angular momentum by the inlet opening for the air in the chamber at least partially in the circumferential direction is directed. To achieve this angular momentum the inlet opening must therefore be nozzle-shaped his. To amplify this angular momentum the inlet opening is at least partially radially outside the entrance opening, which results has that the turning radius of the air to the outlet opening reduced. As a result, the air experiences on her radial path inwards to the smaller outlet in a known manner due to the physical Law of conservation of the pressure pulse a considerable one Spin so that the air the exit opening from the vortex chamber with a considerable Speed of rotation leaves.
- the vortex chamber is preferably by several, essentially radial slots in the wall of the swirl chamber facing away from the outlet opening educated.
- These slots can, for example have the same shape as the slots in the baffle plate according to the literature discussed at the beginning, of course these slots are radial in relation to the exit opening must be arranged so that the Air entering the swirl chamber radially towards the outlet opening moved inward and thus a considerable one due to its inertia Undergoes spin.
- the middle Radius is much larger than the radius of the outlet opening the vortex chamber.
- the flame space in the exit direction in front of the nozzle for Fuel can be obtained in a manner known per se from a reaction tube be enclosed. Because the mixture between air and fuel already in the central area after exiting the outlet opening and the nozzle for fuel take place, the mixing is not affected, and there Air and fuel already intimately mixed in the Area of the reaction tube and also there a combustion takes place, the reaction tube heats up in particular Dimensions causing a gasification sprayed liquid Fuel takes place and not as a liquid, but burns as gas largely without residue.
- a cross-sectional jump performing stage between the reaction tube and the outlet opening of the swirl chamber, preferably the front tapering in the direction of flow Wall of the vortex chamber.
- This stage leads that a roller-shaped ring vortex forms in its area, in which the air / fuel mixture rotates before it further course in the downstream flame area arrives.
- This roller-shaped vortex supports the intimate Mixing fuel and air.
- an opening for supplying flue gas can advantageously be arranged.
- the flue gas serves the purpose of lowering the partial pressure of the oxygen so as to lower the peak areas of the flame temperature and thus avoid the formation of NO x .
- the roller-shaped vortex in the area of the step leads to an intimate mixing of the air / fuel / flue gas mixture in front of the area of the flame.
- the breakthrough for the flue gas can be an annular one Be gap, this gap being defined by a space between the rear end of the reaction tube and the vortex chamber can be formed.
- this slot can be adjustable, whereby for adjustment the size of the slot the reaction tube in axial Direction can be kept adjustable.
- the pressure of the swirl chamber must be Air supplied should be such that despite the comparatively narrow cross section of the outlet opening of the swirl chamber one for the combustion of the introduced fuel sufficient amount of air is supplied.
- Air supplied should be such that despite the comparatively narrow cross section of the outlet opening of the swirl chamber one for the combustion of the introduced fuel sufficient amount of air is supplied.
- This is particular also to take into account that to accelerate the air in additional power is required in the swirl chamber.
- the axial partial section according to FIG. 1 shows the front Part of a burner in which a fan for feeding Air and a pump for the supply of oil in the drawing are left out.
- a tubular housing 1 tapers in a conical part 2 towards a flame chamber 3, the is surrounded by a flame tube 4.
- the flame tube 4 is over Screws 5 adjustable in the axial direction connected to brackets 6, attached to the conical part 2 of the housing 1 are.
- a gap 8 is formed between a rear end 7 of the flame tube 4 and the conical part 2 of the housing 1, a gap 8 is formed.
- An interior 9 of the housing 1 is on the not shown Fan connected.
- the front end of the conical part 2 of the housing 1 is closed by a conical wall 10 of a swirl chamber 11, which an outlet opening 12 and through slots in a rear wall 13 formed inlet openings 14 having.
- the inlet openings 14 are in one radial area outside the outlet opening 12 and also directed substantially in the circumferential direction.
- the Entry openings 14 are with the interior 9 of the housing 1 in connection and are thus from the not shown Fan fed with air.
- A extends through the center of the housing 1 Tube 15 for supplying oil via a nozzle assembly 16 to one Nozzle 17, which is designed as a swirl nozzle.
- the rear one Wall 13 of the swirl chamber 11 is tight with the nozzle assembly 16 connected.
- the nozzle 17 extends into the outlet opening 12, which thus forms an annular gap.
- insulators 18 extend tightly, lead through the ignition electrodes 19 into the flame chamber 3, the rear ends as a connector 20 for connection to not shown Ignition cables are formed.
- Fig. 1 is only one of the ignition electrodes 19 is shown, but it is shown in FIG known way two electrodes available, like that from the View in Fig. 2 can be seen.
- a flame detector 22 monitors the burning of the flame in the flame chamber 3.
- a step representing a cross-sectional jump is formed, as can be clearly seen from FIG. 1.
- an annular roll vortex is formed, in which the flow in the area of the flame tube 3 runs to the rear and in the area of the conical wall 10 to the front.
- This vortex also contributes to the intimate mixing of fuel and air.
- mixing with exhaust gas that flows in via the gap 8 takes place in this area. The oxygen partial pressure is reduced by this exhaust gas. This prevents temperature peaks in the flame pattern and thus the formation of NO x .
- the flame tube 4 is adjustable in relation to the housing 1 and thus also the size of the gap 8 and the supply of exhaust gas.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
- Spray-Type Burners (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Description
- Fig. 1
- zeigt einen axialen Teilschnitt durch ein Ausführungsbeispiel gemäß der Erfindung,
- Fig. 2
- ist eine Axialansicht von links in Fig. 1
- Fig. 3
- zeigt als vergrößerte Einzelheit aus Fig. 1 die hintere Wandung der Wirbelkammer und
- Fig. 4
- ist eine Axialansicht in Fig. 3.
Claims (14)
- Brenner für flüssigen oder gasförmigen Brennstoff, insbesondere für Öl,mit einer Düse (17) zur Zuführung von Brennstoff,mit einer die Düse (17) konzentrisch umgebenden Austrittsöffnung (12) zur Zuführung von Luft in den Austrittsbereich der Düse (17),mit einer in Strömungsrichtung vor der Austrittsöffnung (12) angeordneten Kammer (11), die die Austrittsöffnung (12) als zentrale Öffnung aufweist,mit einer Eintrittsöffnung (14) zur Zuführung von Luft in die Kammer (11) undmit Mitteln zur Erzeugung einer Drehbewegung der Luft in der Kammer,daß zur Erzeugung der Drehbewegung der Luft in der Kammer (11) die Eintrittsöffnung (14) wenigstens teilweise in Umfangsrichtung gerichtet ist, der Art, daß die Luft mit einem Drehimpuls in die Kammer (11) einströmt, unddaß die Eintrittsöffnung wenigstens teilweise radial außerhalb der Austrittsöffnung (12) angeordnet ist.
- Brenner nach Anspruch 1, dadurch gekennzeichnet, daß der Querschnitt der Wirbelkammer (11) sich zur Austrittsöffnung (12) hin konisch oder trompetenförmig verkleinert.
- Benner nach Anspruch 1, dadurch gekennzeichnet, daß die Eintrittsöffnung (14) für Luft durch im wesentlichen radiale Schlitze in einer Wandung (13) der Wirbelkammer (11) gebildet ist.
- Brenner nach Anspruch 3, dadurch gekennzeichnet, daß sich die die Eintrittsöffnung (14) bildenden Schlitze in einem Umfangsbereich erstrecken, dessen mittlerer Radius wesentlich größer ist als der Radius der Austrittsöffnung (12) der Wirbelkammer (11).
- Brenner nach Anspruch 1, dadurch gekennzeichnet, daß die Düse (17) für Brennstoff eine Wirbeldüse ist, deren Wirbelrichtung die gleiche ist wie die Wirbelrichtung in der Wirbelkammer (11).
- Brenner nach Anspruch 1, dadurch gekennzeichnet, daß ein in Austrittsrichtung von der Düse (17) für Brennstoff gebildeter Flammraum (3) von einem Reaktionsrohr (4) umschlossen ist.
- Brenner nach Anspruch 6, dadurch gekennzeichnet, daß zwischen dem Reaktionsrohr (4) und der Austrittsöffnung (12) der Wirbelkamemr (11), vorzugsweise deren sich in Strömungsrichtung verjügenden vorderen Wandung (10) eine einen Querschnittssprung darstellende Stufe gebildet ist.
- Brenner nach Anspruch 7, dadurch gekennzeichnet, daß im Bereich der Stufe, vorzugsweise unmittelbar radial innerhalb des Raktionsrohres (4) wenigstens ein Durchbruch für Rauchgas vorgesehen ist.
- Brenner nach Anspruch 8, dadurch gekennzeichnet, daß der Durchbruch ein ringförmiger Spalt (8) ist.
- Brenner nach Anspruch 9, dadurch gekennzeichnet, daß der Spalt (8) durch einen Zwischenraum zwischen dem hinteren Ende (7) des Reaktionsrohres (4) und der Wirbelkammer (11) gebildet ist.
- Brenner nach Anspruch 10, dadurch gekennzeichnet, daß die Größe des Spaltes (8) verstellbar ist.
- Brenner nach Anspruch 11, dadurch gekennzeichnet, daß zur Verstellung der Größe des Spaltes (8) das Reaktionsrohr (4) in axialer Richtung verstellbar gehalten ist.
- Brenner nach Anspruch 1, dadurch gekennzeichnet, daß außerhalb der Wirbelkammer (11) ein Ringspalt zur zusätzlichen Zuführung von Luft in den Flammraum (3) angeordnet ist.
- Brenner nach Anspruch 13, dadurch gekennzeichnet, daß der Querschnitt des Ringspaltes verstellbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19604347 | 1996-02-07 | ||
DE19604347A DE19604347A1 (de) | 1996-02-07 | 1996-02-07 | Brenner für flüssigen oder gasförmigen Brennstoff, insbesondere für Öl |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0789189A2 EP0789189A2 (de) | 1997-08-13 |
EP0789189A3 EP0789189A3 (de) | 1999-02-10 |
EP0789189B1 true EP0789189B1 (de) | 2003-11-12 |
Family
ID=7784698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96118804A Expired - Lifetime EP0789189B1 (de) | 1996-02-07 | 1996-11-23 | Brenner für flüssigen oder gasförmigen Brennstoff, insbesondere für Öl |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0789189B1 (de) |
AT (1) | ATE254262T1 (de) |
DE (2) | DE19604347A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006049294A1 (de) * | 2006-10-19 | 2008-04-24 | Robert Bosch Gmbh | Mischeinrichtung für einen Öl- oder Gasbrenner |
US10982846B2 (en) * | 2017-06-14 | 2021-04-20 | Webster Combustion Technology Llc | Vortex recirculating combustion burner head |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3946552A (en) * | 1973-09-10 | 1976-03-30 | General Electric Company | Fuel injection apparatus |
DE3930569C2 (de) * | 1989-09-13 | 1995-06-01 | Siegfried W Schilling | Brennerkopf |
DE4010360A1 (de) * | 1990-03-31 | 1991-10-02 | Peter Erat | Diffusor mit integrierter zuendeinrichtung und drallscheibe |
DE4412185B4 (de) | 1994-04-08 | 2005-05-12 | Körting Hannover AG | Brenner für flüssige oder gasförmige Brennstoffe, insbesondere für Öl |
DE4415717C2 (de) * | 1994-05-04 | 2001-03-01 | Man B & W Diesel Ag | Brenner |
DE29518919U1 (de) * | 1995-11-29 | 1996-01-25 | MEKU Metallverarbeitungs-GmbH, 78083 Dauchingen | Mischeinrichtung für einen Brenner |
-
1996
- 1996-02-07 DE DE19604347A patent/DE19604347A1/de not_active Ceased
- 1996-11-23 EP EP96118804A patent/EP0789189B1/de not_active Expired - Lifetime
- 1996-11-23 AT AT96118804T patent/ATE254262T1/de not_active IP Right Cessation
- 1996-11-23 DE DE59610817T patent/DE59610817D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19604347A1 (de) | 1997-08-14 |
EP0789189A3 (de) | 1999-02-10 |
ATE254262T1 (de) | 2003-11-15 |
EP0789189A2 (de) | 1997-08-13 |
DE59610817D1 (de) | 2003-12-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0902233B1 (de) | Kombinierte Druckzerstäuberdüse | |
EP0911583B1 (de) | Verfahren zum Betrieb eines Vormischbrenners | |
DE2345282B2 (de) | Verbrennungseinrichtung für Gasturbinentriebwerke | |
DE4411624A1 (de) | Brennkammer mit Vormischbrennern | |
EP0769655A2 (de) | Airblast-Zerstäuberdüse | |
EP0636836A2 (de) | Brenner zum Verbrennen von staubförmigem Brennstoff | |
EP0548396A1 (de) | Vorrichtung für die Vermischung zweier gasförmiger Komponenten und Brenner, in welchem diese Vorrichtung eingesetzt wird | |
DE2659089C3 (de) | Brenner, insbesondere für flüssige Brennstoffe | |
EP0394800A1 (de) | Vormischbrenner für die Heissgaserzeugung | |
DE2500834A1 (de) | Vorrichtung zur verbrennung brennbarer abfallfluessigkeiten | |
DE19738054C2 (de) | Verfahren und Vorrichtung zur Veränderung der Drallzahl der Verbrennungsluft eines Brenners während des Betriebes | |
EP0483554B1 (de) | Verfahren zur Minimierung der NOx-Emissionen aus einer Verbrennung | |
EP0742411B1 (de) | Luftzuströmung zu einer Vormischbrennkammer | |
DE2428622A1 (de) | Brennerkopf, insbesondere fuer gasfoermige brennstoffe | |
EP0789189B1 (de) | Brenner für flüssigen oder gasförmigen Brennstoff, insbesondere für Öl | |
EP0777082A2 (de) | Vormischbrenner | |
DE4412315A1 (de) | Verfahren und Vorrichtung zum Betreiben der Brennkammer einer Gasturbine | |
DE4408256A1 (de) | Verfahren und Vorrichtung zur Flammenstabilisation von Vormischbrennern | |
DE10202600B4 (de) | Gasbrenner | |
DE3801681C1 (en) | Method for burning gaseous or liquid fuel and burner for carrying out this method | |
CH650067A5 (en) | Oil-atomising burner | |
DE19503781A1 (de) | Öl- oder Gasgebläsebrenner | |
EP0414050B1 (de) | Verbrennungskopf | |
EP0115858A1 (de) | Brenner zum Einbau in Heizungs- und Dampferzeugungsanlagen | |
EP0114610A1 (de) | Brenner zur stöchiometrischen Verbrennung flüssiger oder gasförmiger Brennstoffe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT CH DE IT LI NL |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT CH DE IT LI NL |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT CH DE IT LI NL |
|
17P | Request for examination filed |
Effective date: 19990615 |
|
17Q | First examination report despatched |
Effective date: 20020723 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE IT LI NL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031112 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20031112 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 59610817 Country of ref document: DE Date of ref document: 20031218 Kind code of ref document: P |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20040813 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: AUGUST BROETJE GMBH Free format text: KOERTING HANNOVER AG#BADENSTEDTER STRASSE 56#D-30453 HANNOVER (DE) -TRANSFER TO- AUGUST BROETJE GMBH##D-26180 RASTEDE (DE) Ref country code: CH Ref legal event code: NV Representative=s name: PATENTANWALTSBUERO JEAN HUNZIKER |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20051121 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20051130 Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061123 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20061124 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070601 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071130 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071130 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |