EP0655580A2 - Mélangeur pour brûleur à huile ou à gaz - Google Patents

Mélangeur pour brûleur à huile ou à gaz Download PDF

Info

Publication number
EP0655580A2
EP0655580A2 EP94118271A EP94118271A EP0655580A2 EP 0655580 A2 EP0655580 A2 EP 0655580A2 EP 94118271 A EP94118271 A EP 94118271A EP 94118271 A EP94118271 A EP 94118271A EP 0655580 A2 EP0655580 A2 EP 0655580A2
Authority
EP
European Patent Office
Prior art keywords
tube
mixing
mixing device
oil
flame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94118271A
Other languages
German (de)
English (en)
Other versions
EP0655580A3 (fr
EP0655580B1 (fr
Inventor
Alois STÖCKL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A Schwarz and Co
Original Assignee
A Schwarz and Co
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 A Schwarz and Co filed Critical A Schwarz and Co
Publication of EP0655580A2 publication Critical patent/EP0655580A2/fr
Publication of EP0655580A3 publication Critical patent/EP0655580A3/fr
Application granted granted Critical
Publication of EP0655580B1 publication Critical patent/EP0655580B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • 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
    • F23D11/40—Mixing tubes; Burner heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes

Definitions

  • the invention relates to a mixing device for oil or gas burners with a mixing tube with an end opening, an annular baffle arranged in the flow direction upstream of the opening with a cylindrical jacket facing the opening of the mixing tube and at least one nozzle and at least one ignition electrode, wherein the cylindrical jacket at the passage opening is provided with a cone on the outside, the end edge of which with a smaller diameter lies at least approximately, preferably exactly in the plane of the passage opening of the mixing tube.
  • the object of the invention is to improve a mixing device of this type in such a way that it is characterized by low NOx formation.
  • Nitrogen oxides occur in all combustion processes in which fossil fuels are burned. They occur in the flame and the immediate high temperature zone. It is formed by partial oxidation of the molecular nitrogen in the combustion air and any (organic) nitrogen that is chemically bound in the fuel. Thus, two sources are responsible for the formation of nitrogen monoxide, with the reaction media gases and flame front leading to three different nitrogen monoxide formation mechanisms.
  • thermal NO which arises from the molecular nitrogen N2 in the combustion air above 1300 ° C
  • second prompt NO through the reaction of hydrocarbon radical Cx with oxygen
  • third fuel NO from the atomic nitrogen bound in the heating oil.
  • Oil and gas fires primarily generate thermal NOx consisting of approx. 95% NO and 5% NO2. At temperatures below 600 ° C and in the atmosphere, the NO oxidizes to NO2, which is why the emission values are calculated as NO2.
  • the internal flue gas recirculation has not yet been satisfactorily solved. Since there is no additional fan for the internal flue gas recirculation, a much lower one must be available Power, in this case the air injector, which processes the fuel and adds flue gas. (For external flue gas recirculation, the flue gas fan requires an additional 30% more electricity).
  • the aim of the invention is to eliminate the previous start-up problems and to increase the previously lacking operational safety.
  • the object of the invention is achieved in that the cylindrical jacket protrudes from the mixing tube, the end edge of the cone or the inner tube being upstream in front of the end edge of the cylindrical jacket in the flow direction and in that the annular baffle plate is provided with radial slots.
  • the core fire zone is yellow. In this area, about 10 to 30% of the fuel is burned due to lack of air. Due to the hollow cone characteristics of the oil nozzle, only some of the oil drops are burned with the core combustion air in the core area of the mixing device.
  • the gasification zone / main flame is blue. Due to the kinetic energy of the oil droplets, 70 to 90% of the oil droplets escape unburned through the core fire zone, where they are gasified by the recirculation of the hot flue gases and mixed with the combustion air. This gasified and mixed with air and flue gas has very poor ignition properties and would burn unstably without the stabilizing core flame.
  • the gasification temperature can be controlled by recirculating the flue gases.
  • the situation with a gas burner is as follows: since gas is already being fed to the burner, the gasification zone is omitted.
  • the core flame ensures that the poorly ignitable mixture of fuel, air and flue gas burns stably and cleanly.
  • the gas fuel is mixed intensively and evenly with the combustion air in the area of the gas lances. This uniform mixing has the advantage that there is no CO formation in the exhaust gases in all operating states. Uniform mixing of air and gas has the advantage that the burnout is largely CO-free, but the ignitability of this mixture is worse.
  • a gas-air mixture is the most ignitable when there is a lack of air.
  • the essence of the present invention is the position of the baffle plate and the air inlet control edge.
  • the incoming combustion air is pressed into the oil or gas mist.
  • the novel baffle plate with the additional cone and the rectangular regulating edge creates a negative pressure in the area between the end flange of the mixing tube and the Recirculation pipe is generated, on the one hand the flue gas is mixed in and on the other hand the fuel is pressed outwards into this vortex area and mixed intensively.
  • FIG. 1 shows a longitudinal section through a mixing device according to the invention of an oil fan burner
  • FIG. 2 shows a same longitudinal section through a mixing device of a gas fan burner
  • FIG. 3 shows a longitudinal section through the front region of an oil mixing device according to a further exemplary embodiment of the invention
  • 4 shows an end view of this oil mixing device
  • FIGS. 5 to 8 show the same views as FIGS. 3 and 4 according to further exemplary embodiments of an oil mixing device
  • FIGS. 9 to 14 show the same views as FIGS. 3 and 4 4 according to further exemplary embodiments of different gas mixing devices.
  • the mixing device according to the invention has a mixing tube 1.
  • the mixing tube 1 is provided with a front passage 3 at the end facing the flame.
  • a pressure atomizing nozzle 4 is located in the center of the mixing tube 1 and is connected to an oil pressure line.
  • the pressure atomizing nozzle 4 can be carried by a nozzle assembly 6 which is provided with an oil preheater.
  • the pressure atomizing nozzle 4 is located in a cone-like nozzle chamber 8.
  • the nozzle chamber 8 has one cylindrical section 9, which is delimited on one side by an end wall 13 and on the other side by a frustoconical region 14.
  • Two ignition electrodes 29 protrude through the wall 13.
  • the wall 13 can be provided with additional bores in order to allow a throttled air supply. In general, however, the nozzle chamber 8 is closed except for the passage 15.
  • the nozzle chamber 8 lies with its opening 15 directly against the baffle plate 10.
  • the baffle plate 10 is annular and has a cylindrical jacket 11 on the side facing away from the pressure atomizing nozzle 4.
  • the cylindrical jacket 11 can be provided with slot-shaped openings 33, which preferably run along generatrices of the cylindrical jacket 11.
  • baffles 34 which have been created by pressing in the material.
  • the guide plates 30 are preferably inclined at an angle of ⁇ 30 ° to the plane plane of the baffle plate 10.
  • the fact that the baffles 30 project to the flame and not to the pressure atomizing nozzle 4 is advantageous in terms of production technology, but also has advantages in terms of flow technology.
  • the nozzle chamber 8 is soldered or welded to the baffle plate 10 at its tip end.
  • the nozzle chamber 8 is in its truncated cone-shaped area 14 with an ignition air channel or ignition air bores Mistake.
  • the cone surrounding the cylindrical jacket 11 of the baffle plate 10 is formed in the exemplary embodiment by the conical section 7 'of an inner tube 7.
  • the point of contact of the conical section 7 'of the inner tube 7 with the cylindrical jacket 11 lies in the embodiment shown exactly in the plane of the outlet opening 3 of the mixing tube 1.
  • a tolerance range in which the edge 18 of the conical section 7' in front of or behind the plane of the outlet opening 3 lies in the area of the inventive concept.
  • the cylindrical jacket 11 protrudes beyond the outlet opening 3 from the mixing tube 1.
  • the inner tube 7 has a cylindrical section 7 ′′ on the inlet side, which is retracted as far as the end of the pressure atomizing nozzle 4 facing away from the nozzle opening 19.
  • the inner tube 7 delimits an annular gap 5 with the cylindrical jacket 11 of the baffle plate 10.
  • a full cone can also surround the cylindrical jacket 11 of the baffle plate 10.
  • the pressure atomizing nozzle 4 projects into the inner tube 7.
  • the yellow-burning core fire zone 23 projects in a wedge shape through the flame tube 17.
  • the blue-burning main flame zone 24 adjoins the core fire zone 23.
  • the flame tube 17 can be made from a perforated plate.
  • the recirculation pipe 2 is provided with an electrical resistance heater 31.
  • a mixing device for a gas fan burner with a plurality of gas nozzles 25, 26 is shown.
  • the centrally arranged gas nozzle 25 protrudes through the baffle plate 10 into the core fire zone 23.
  • the outer gas nozzles 26 surround the inner tube 7 and end at the level of the cylindrical section 7 ′′ of the inner tube 7.
  • the ignition electrodes 29 protrude through the baffle plate 10 into the core fire zone 23.
  • the construction of the mixing device is the same as the mixing device according to FIG. 1.
  • a part of the gas-air mixture is led directly from the nozzle 25 into the core fire zone 23.
  • the gas from the nozzles 26 and the air which mixes with it are guided through the outflow opening 3 of the mixing tube 1 delimited by the flange 16 and by the conical section 7 'of the inner tube 7 or the cylindrical wall 11 of the baffle plate 10.
  • a negative pressure is formed in the zone between the mixing tube 1, the recirculation tube 2 and the inner flame tube 17 and an external recirculation 22 and an internal recirculation 21 of the flue gases.
  • the core fire zone When gas is burned, the core fire zone also burns blue.
  • 16 holes 28 are provided in the flange, which describe a circular ring with a smaller diameter than the flame tube 17.
  • 1 nozzle pipes 20 are arranged in the flange 16 of the mixing tube and are inclined to the longitudinal center axis of the mixing device.
  • the flange 16 of the mixing tube 1 is again provided with radially oriented inwardly open slots 27 and in the exemplary embodiment according to FIGS. 11 and 12 the flange 16, which lies in a flat plane, has holes 28 on.
  • nozzle tubes 20 are provided on the flange 16, which in turn lies in a plane plane that is oriented perpendicular to the longitudinal central axis of the mixing device, but extends parallel to the longitudinal axis of the mixing device.
  • the circular ring described by the nozzle tubes 20 in turn has a smaller diameter than the flame tube 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP94118271A 1993-11-29 1994-11-21 Mélangeur pour brûleur à huile ou à gaz Expired - Lifetime EP0655580B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0240993A AT400259B (de) 1993-11-29 1993-11-29 Mischeinrichtung für öl- oder gasbrenner
AT2409/93 1993-11-29

Publications (3)

Publication Number Publication Date
EP0655580A2 true EP0655580A2 (fr) 1995-05-31
EP0655580A3 EP0655580A3 (fr) 1995-11-15
EP0655580B1 EP0655580B1 (fr) 1999-01-27

Family

ID=3533832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118271A Expired - Lifetime EP0655580B1 (fr) 1993-11-29 1994-11-21 Mélangeur pour brûleur à huile ou à gaz

Country Status (3)

Country Link
EP (1) EP0655580B1 (fr)
AT (2) AT400259B (fr)
DE (1) DE59407736D1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699867A3 (fr) * 1994-09-03 1996-09-11 Johannes Wilhelmus Graat Dispositif de combustion pour combustibles gazeux
EP0867658A1 (fr) 1997-03-24 1998-09-30 VTH AG Verfahrenstechnik für Heizung Procédé et dispositif pour la combustion d'un combustible liquide
EP0867659A1 (fr) 1997-03-24 1998-09-30 VTH Verfahrentechnik für Heizung AG Procédé et dispositif pour la combustion d'un combustible gazeux
AT404399B (de) * 1995-08-26 1998-11-25 Man B & W Diesel Ag Verfahren und brenner zum verbrennen insbesondere flüssiger brennstoffe
EP0864812A3 (fr) * 1997-03-12 1999-06-16 A. Schwarz + Co. Dispositif de mélange pour brûleur à gaz et à huile
RU2145039C1 (ru) * 1999-03-18 2000-01-27 Федеральное государственное унитарное предприятие "Исследовательский центр им.М.В.Келдыша" Способ подачи горючего в камеру теплового двигателя и устройство для его реализации
WO2000020799A1 (fr) * 1998-10-08 2000-04-13 Huta Buczek S.A. Systeme stabilisateur de combustion de bruleur a gaz a faible emission d'oxydes d'azote
AT407911B (de) * 1998-03-05 2001-07-25 Vaillant Gmbh Atmosphärischer teilvormischender gasbrenner
US6579086B2 (en) 1997-03-24 2003-06-17 R.W. Beckett Corporation Process and fuel burner with exhaust-gas recirculation
WO2004048850A3 (fr) * 2002-11-22 2004-08-05 Aalborg Ind As Chaudiere, procede de commande de la combustion dans une chaudiere et tube d'echangeur thermique utilise dans une chaudiere
DE10202600B4 (de) * 2002-01-24 2005-10-27 Eisenmann Maschinenbau Gmbh & Co. Kg Gasbrenner
CN107606611A (zh) * 2017-09-28 2018-01-19 湖南安盛能源化工有限责任公司 一种节能型醇基燃料燃烧机
CN114234186A (zh) * 2021-12-06 2022-03-25 北京航天石化技术装备工程有限公司 一种双引射式燃气分级超低氮燃烧器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29912362U1 (de) * 1999-07-15 2001-01-11 Viessmann Werke GmbH & Co., 35108 Allendorf Blaubrenner für Heizkessel
DE102004002246A1 (de) * 2004-01-15 2005-08-11 J. Eberspächer GmbH & Co. KG Vorrichtung zur Erzeugung eines Luft/Kohlenwasserstoff-Gemischs
DE102009057120A1 (de) 2009-12-08 2011-06-09 Scheer Heizsysteme & Produktionstechnik Gmbh Mischeinrichtung für einen Zerstäubungsbrenner

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2228719A1 (de) * 1972-06-13 1974-01-03 Unger Ladislaus Vorrichtung zur gemischaufbereitung fuer oel-druckzerstaeuber-brenner
DE2545234C2 (de) * 1975-10-09 1983-09-15 Fa. J. Eberspächer, 7300 Esslingen Mischeinrichtung für Brenner
DE2757094A1 (de) * 1977-12-21 1979-07-05 Anton Schwarz Misch- und brennkopf fuer heizoelbrenner kleiner leistungen
DE2807186C2 (de) * 1978-02-20 1986-03-20 Bieler & Lang GmbH, 7590 Achern Mischkopf für Kohlenwasserstoff-, insbesondere Heizöl-Brenner, mit kleinen Brennstoffdurchsatzmengen
DE2821932A1 (de) * 1978-05-19 1979-11-22 Karl Bodemer Mischeinrichtung zur verbrennung von fluessigen kohlenwasserstoffen, insbesondere heizoel und dieseloel
JPS5837413A (ja) * 1981-08-28 1983-03-04 Nissei Oobaru Kk 液体燃焼装置
FR2582781A1 (fr) * 1985-06-04 1986-12-05 Mueller Rudolf Bruleur pour chaudiere a combustion liquide avec circuit de recyclage des gaz de combustion
CH670297A5 (fr) * 1986-02-13 1989-05-31 Schilling Siegfried W
DE3636787A1 (de) * 1986-10-29 1988-05-19 Man Technologie Gmbh Brenner mit einer oelzerstaeubervorrichtung
DE3709830A1 (de) * 1987-03-25 1988-10-06 Gerhard Weinbrenner Brennrohr fuer insbesondere oelbeheizte zentralheizungskessel
DE4021315C1 (en) * 1990-07-04 1992-01-02 Buderus Heiztechnik Gmbh Oil burner with blue frame - incorporates baffle ring on inside of tube outlet
DE4231788A1 (de) * 1992-09-23 1994-03-24 Koerting Ag Brenner für flüssige oder gasförmige Brennstoffe

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699867A3 (fr) * 1994-09-03 1996-09-11 Johannes Wilhelmus Graat Dispositif de combustion pour combustibles gazeux
AT404399B (de) * 1995-08-26 1998-11-25 Man B & W Diesel Ag Verfahren und brenner zum verbrennen insbesondere flüssiger brennstoffe
EP0864812A3 (fr) * 1997-03-12 1999-06-16 A. Schwarz + Co. Dispositif de mélange pour brûleur à gaz et à huile
EP0867658A1 (fr) 1997-03-24 1998-09-30 VTH AG Verfahrenstechnik für Heizung Procédé et dispositif pour la combustion d'un combustible liquide
EP0867659A1 (fr) 1997-03-24 1998-09-30 VTH Verfahrentechnik für Heizung AG Procédé et dispositif pour la combustion d'un combustible gazeux
US6579086B2 (en) 1997-03-24 2003-06-17 R.W. Beckett Corporation Process and fuel burner with exhaust-gas recirculation
AT407911B (de) * 1998-03-05 2001-07-25 Vaillant Gmbh Atmosphärischer teilvormischender gasbrenner
WO2000020799A1 (fr) * 1998-10-08 2000-04-13 Huta Buczek S.A. Systeme stabilisateur de combustion de bruleur a gaz a faible emission d'oxydes d'azote
RU2145039C1 (ru) * 1999-03-18 2000-01-27 Федеральное государственное унитарное предприятие "Исследовательский центр им.М.В.Келдыша" Способ подачи горючего в камеру теплового двигателя и устройство для его реализации
DE10202600B4 (de) * 2002-01-24 2005-10-27 Eisenmann Maschinenbau Gmbh & Co. Kg Gasbrenner
WO2004048850A3 (fr) * 2002-11-22 2004-08-05 Aalborg Ind As Chaudiere, procede de commande de la combustion dans une chaudiere et tube d'echangeur thermique utilise dans une chaudiere
CN107606611A (zh) * 2017-09-28 2018-01-19 湖南安盛能源化工有限责任公司 一种节能型醇基燃料燃烧机
CN114234186A (zh) * 2021-12-06 2022-03-25 北京航天石化技术装备工程有限公司 一种双引射式燃气分级超低氮燃烧器
CN114234186B (zh) * 2021-12-06 2023-09-29 北京航天石化技术装备工程有限公司 一种双引射式燃气分级超低氮燃烧器

Also Published As

Publication number Publication date
AT400259B (de) 1995-11-27
ATE176309T1 (de) 1999-02-15
EP0655580A3 (fr) 1995-11-15
EP0655580B1 (fr) 1999-01-27
DE59407736D1 (de) 1999-03-11
ATA240993A (de) 1995-03-15

Similar Documents

Publication Publication Date Title
EP0655580B1 (fr) Mélangeur pour brûleur à huile ou à gaz
EP0558455B1 (fr) Brûleur, notamment brûleur à huile ou brûleur combiné huile/gaz
US4257763A (en) Low NOx burner
EP0009182B1 (fr) Brûleur à gazéification
DE19717721A1 (de) Brennereinrichtung und Verfahren zum Betreiben einer Brennereinrichtung für eine NOx- und CO-arme Verbrennung
DE9007627U1 (de) Brenner mit niedriger NOx-Emission
EP0698764A2 (fr) Brûleur pour le combustion sans flamme d'un mélange gaz combustible-air
EP4314655B1 (fr) Brûleur
EP0484777B1 (fr) Procédé pour la stabilisation d'un processus de combustion
DE102005038662B4 (de) Brennkopf und Verfahren zur Verbrennung von Brennstoff
DE4422535A1 (de) Verfahren zum Betrieb einer Feuerungsanlage
DE3446788A1 (de) Flammenverdampfungsbrenner mit vorbrennkammer
DE4008692A1 (de) Mischeinrichtung fuer oelgeblaesebrenner
EP0287596B1 (fr) Bruleur pour la combustion de combustible liquide
EP0145920B1 (fr) Dispositif de combustion
EP0537491B1 (fr) Dispositif de mélange pour brûleur à huile
DE102009057120A1 (de) Mischeinrichtung für einen Zerstäubungsbrenner
EP0114610A1 (fr) Brûleur à combustion stoechiométrique de combustible liquide ou gazeux
DE4115814C2 (fr)
DE4428097A1 (de) Verfahren zum Betreiben eines Heizgerätes sowie Heizgerät zur Durchführung des Verfahrens
DE1551640C (de) Brenner mit einer Verdampferschale
DE4412365A1 (de) Brenner für flüssigen Brennstoff, insbesondere Öl
DD240586A1 (de) Einrichtung zum gleichzeitigen verbrennen gasfoermiger, fluessiger und staubfoermiger brennstoffe
CH690193A5 (de) Brenner bzw. Erhitzer mit einem Brenner.
DE8905865U1 (de) Brenner zur Verbrennung von gasförmigen und/oder flüssigen Brennstoffen

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 FR IT LI

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 FR IT LI

17P Request for examination filed

Effective date: 19960422

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19980217

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: A. SCHWARZ + CO.

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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 FR IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

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: 19990127

Ref country code: FR

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: 19990127

REF Corresponds to:

Ref document number: 176309

Country of ref document: AT

Date of ref document: 19990215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

REF Corresponds to:

Ref document number: 59407736

Country of ref document: DE

Date of ref document: 19990311

EN Fr: translation not filed
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20001114

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20001124

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20001128

Year of fee payment: 7

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: 20011121

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: 20011130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011130

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: 20020702

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL