EP0218602B1 - Bruleur de combustibles gazeux, en particulier pour une chaudiere de chauffage - Google Patents

Bruleur de combustibles gazeux, en particulier pour une chaudiere de chauffage Download PDF

Info

Publication number
EP0218602B1
EP0218602B1 EP86901330A EP86901330A EP0218602B1 EP 0218602 B1 EP0218602 B1 EP 0218602B1 EP 86901330 A EP86901330 A EP 86901330A EP 86901330 A EP86901330 A EP 86901330A EP 0218602 B1 EP0218602 B1 EP 0218602B1
Authority
EP
European Patent Office
Prior art keywords
burner
gas
apertures
combustion air
fuel
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
Application number
EP86901330A
Other languages
German (de)
English (en)
Other versions
EP0218602A1 (fr
Inventor
Albert GÖTTE
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.)
Ygnis AG
Original Assignee
Ygnis SA
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 Ygnis SA filed Critical Ygnis SA
Priority to AT86901330T priority Critical patent/ATE41991T1/de
Publication of EP0218602A1 publication Critical patent/EP0218602A1/fr
Application granted granted Critical
Publication of EP0218602B1 publication Critical patent/EP0218602B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
    • B01F35/833—Flow control by valves, e.g. opening intermittently
    • 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, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • 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, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes

Definitions

  • the present invention relates to a burner for gaseous fuels, in particular for boilers, with means designed as a movable hollow piston for metering fuel and air, at least one of the movable hollow pistons being provided with metering openings opening out laterally, and these hollow pistons being arranged parallel or coaxially to one another .
  • a mixing device for gases has become known (FR-A-2 255 943) which allows a second gas to be metered into a constant first quantity of gas.
  • a piston is used, which is moved in a cylinder, the jacket of which is interspersed with openings, in order to change the amount of the second gas to be mixed.
  • this device changes the mixing ratio of the gases when it is actuated, so that they are not suitable for gas burners which strive for a gas mixture of constant, constant composition.
  • a device which is used for mixing two gases (CH-A-589 822). It is a question of admixing a part of the combustion gases to the fresh air / fuel gas mixture in the intake manifold of a fan that delivers the burner.
  • two coaxially arranged nested cylinder jackets with openings are used, the overall cross-section of the openings of the air / fuel gas mixture being adjustable by means of a ring which can be displaced on the cylinder jacket, while the second gas in the form of flue gas is added to the fuel gas mixture by displacing a piston inside the smaller one Cylinder opens corresponding openings for the passage of smoke gases for mixing.
  • the respective ratio of fuel gases to mixed gases is not constant under different operating conditions, since only one quantity, namely the flue gases, can be changed in terms of quantity and constant quantity of fuel gas.
  • a further control of a gas burner is shown in US-A-2 377 497.
  • the amount of air and the amount of gas which together produce the fuel / air mixture can be set individually.
  • This ratio of air and fuel is then kept constant over a control range, a temperature in the boiler serving as the control variable.
  • Part of the combustion air is fed into a swirl chamber downstream of the gas outlet, while a further part of the combustion air is metered in through two slits that can be changed in terms of control in the form of an air jacket enveloping the primary gas / air mixture.
  • This construction is relatively simple in construction. However, it has the disadvantage that the respective outlet cross section for the fuel gas mixture changes significantly less than proportional to the power and thus the fuel / air quantity.
  • the flame length between full load and partial load is therefore very different. It changes very strongly, particularly in the area of small loads. The flame is getting shorter and shorter, which makes it uncomfortably noticeable for smooth operation and optimal combustion conditions.
  • Another burner has become known which is said to be suitable for both gas and atomized oil or coal dust (GB-A-317 582). Because of the diversity of these fuels, the structure of the burner is complicated. The corresponding cross-sections for the air and the fuel supply must be adjustable so that the burner can be switched from one fuel to another. This also requires sensitive systems for setting, which are characterized by an arrangement of individually adjustable and axially arranged bushes and cylinders, each of which is individually adjustable, for example, by means of a handwheel. After adjustment to a specific fuel, these adjustment mechanisms can then be connected to one another with corresponding yokes and threaded spindles, which allows the combustion mixture to be changed in terms of quantity by moving a spindle in accordance with the changing load.
  • the present invention aims to provide a burner for gaseous fuels, which a regulation possibility on a larger scale with optimal operation of the burner, i. H. with an efficiency that remains essentially the same over the regulation range. Such a measure is also in the interest of environmental protection efforts.
  • the burner according to the invention which the Meeting these requirements in a broad sense is characterized by the fact that the dosing piston for the combustion air, the dosing piston for the fuel and the dosing piston for the openings of the mixed gases forming the flames form an inseparable movement unit and that the dosed media air and gas into a mixing chamber open, which is connected to the combustion chamber via openings in the mixed gas metering piston, in such a way that an at least approximately constant quantity ratio of gas and combustion air is ensured at least in the power range of 10-100% of the nominal power.
  • a gas burner 1 is in a boiler 2, the performance of z. B. is up to 300 KW, installed.
  • a boiler wall 3 with part of the water space 4 can be seen in fragments from the boiler 2.
  • the gas burner 1 is screwed onto the boiler wall 3 by means of a fastening flange 6.
  • a blower air supply nozzle 7 on the side brings combustion air from the blower (not shown) into an air pre-chamber 9, which is preferably cylindrical. It is delimited by a cladding tube 10 and an outer base 11 welded to it. In its interior there is a cylinder-shaped air control plate 12 with lateral openings 13.
  • the burner housing also includes an immersion tube 14 in which a likewise tubular slide 15 is arranged to be longitudinally displaceable.
  • the dip tube 14 and the slide 15 are slidably mounted one inside the other via a lower guide ring 16, while a corresponding sealing ring 17 prevents gas-air mixture emerging from the slide 15 from rising laterally.
  • a burner tube 19 is welded to the tubular slide 15 in its extension, the end of which is closed by a base 20, while lateral flame bores 21 allow the combustible gas-air mixture to escape.
  • valve 15 which is open at the rear and bounded on the outside by the outer base 11 and on the other hand by the air control plate 12, there is an inflow chamber 23 in which the combustion air flowing in through the openings 13 meets the gas flowing in through correspondingly exposed openings 31, to then flow together into a mixing chamber 24.
  • Perforated plates such as the air control plate 12, are known in fluid dynamics. Here they serve to improve the mixing process in order to premix the gas and the air in front of the mixing chamber 24.
  • a static mixer 26 is arranged in the mixing chamber 24.
  • turbulators such as those used in flue gas pipes or the like, baffles which bring about an optimal mixing to form a homogeneous gas / air mixture, can be used.
  • the gaseous fuel passes through a gas supply pipe 28 and a connecting piece 29 into a gas metering pipe 30, which is provided with corresponding lateral openings 31.
  • the gas metering tube 30 is penetrated by a regulating rod 33 which can be moved back and forth from outside, which is guided by means of a stuffing box guide 34 and is fixedly connected to a gas control tube 37 and the slide 15 by means of a lower end holder 35 and a screw connection 36.
  • Ignited gas emerging from the flame bores 21 is shown as gas flames 39.
  • the fuel gas supply on the one hand and the combustion air supply on the other hand and the active burner surface can be controlled by one and the same element, consisting of the slide 15, the burner tube 19 and the gas control tube 37, this control is optimal.
  • This element 15, 19, 37 can also be moved by means of a single reciprocating movement of the regulating rod 33.
  • the gas source will deliver the gas to the gas supply pipe 28 at a constant supply pressure and the lines are dimensioned such that an essentially constant pressure prevails in the interior of the gas metering pipe 30, so that through the exposed openings opening into the inflow chamber 23 41 a gas quantity proportional to the opening number flows out, this is usually different on the combustion air side.
  • the fan conveying the combustion air is normally a fan with a non-proportional or constant delivery characteristic, ie a fan with a non-constant flow rate. With decreasing back pressure, ie increasing number of air jets entering the enlarging inflow chamber 23 through the openings 13, the delivery rate of the fan increases, the pressure in the air pre-chamber 9 decreasing.
  • the openings 13 and 31 are arranged and selected in their shape (round, square, etc.) in such a way that the condition of the constant ratio of gas to combustion air is maintained over a wide performance range.
  • a rotary movement of the control piston or a mixed movement can also be provided.
  • the number of openings per lifting unit or its size can increase.
  • the regulating rod 33 can be regulated in order to design an intended program by moving it accordingly.
  • the gas burner described is extremely simple in construction, reliable and easy to use on external circumstances, such as a fan and the like. Like. to vote.
  • gas metering tube 30 By changing the gas metering tube 30, it is possible to take into account different blower characteristics and at least approximately in every case a constant quantitative ratio of gas and combustion air over other power ranges, which include the important range from 50 to 100% of the nominal power, but down to Can extend 10% to ensure.
  • suction fan on the flue gas side is often preferred to that of a pressure fan for supplying the combustion air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gas Burners (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

Un brûleur de combustibles gazeux, en particulier pour chaudières de chauffage, comprend des organes coulissants et/ou rotatifs (15, 37) qui assurent un rapport au moins approximativement constant entre les quantités de gaz et d'air de combustion, au moins dans une plage de puissance comprise entre 50% et 100% de la puissance nominale. Un élément de commande, un piston (15, 37) par exemple, sert à modifier simultanément l'injection de gaz et d'air dans une chambre de mélange (24). Un premier piston (15) mobile de commande, rotatif et/ou coulissant, commande avec la surface extérieure de son corps la quantité d'air de combustion. Un deuxième piston de commande (37) est agencé à l'intérieur du premier piston tubulaire de commande (15), de préférence coaxialement au premier. Ce deuxième piston (37) commande la quantité de gaz avec la surface intérieure de son corps. Les deux pistons de commande (15, 37) sont fermement reliés l'un à l'autre, et peuvent être mis en rotation ou en mouvement alternatif par un organe d'actionnement (33).

Claims (9)

1. Brûleur pour combustibles gazeux, en particulier pour chaudière de chauffage, comportant un carter, une arrivée de combustible (28), une arrivée d'air de combustion (7) et plusieurs pistons creux (15, 19, 37), formant une unité de déplacement et mobiles par rapport au carter, pour doser le combustible et l'air de combustion, étant précisé qu'au moins l'un des pistons creux (19) présente des ouvertures latérales (21) et que les pistons creux (15, 19, 37) sont disposés parallèlement ou coaxialement l'un à l'autre, caractérisé en ce que les pistons creux (15, 19, 37) ne peuvent pas se déplacer l'un par rapport à l'autre ; en ce que, lors du déplacement des pistons creux (15, 19, 37), des ouvertures (13, 31) pour l'entrée de l'air de combustion et du combustible dans une chambre de mélange (24) et des ouvertures (21) pour le passage du mélange air de combustion-combustible, de la chambre de mélange (24) dans la chaudière de chauffage (2), sont libérées ou fermées ; étant précisé qu'au moins dans la plage de puissance de 10-100 % de la puissance nominale du brûleur, les ouvertures (13, 31) libérées pour l'entrée de l'air de combustion et du combustible sont, les unes par rapport aux autres, dans une relation telle qu'est garanti un rapport quantitatif, au moins approximativement constant d'air de combustion et de combustible.
2. Brûleur selon la revendication 1, caractérisé en ce que le piston creux 15 qui sert à doser la quantité de mélange gazeux qui s'échappe présente un fond obturateur (20) ; et en ce que les ouvertures (21) sont disposées dans la paroi du piston creux.
3. Brûleur selon la revendication 1 ou 2, caractérisé en ce que, coaxialement au piston creux (19) qui sert à doser le mélange gazeux, est disposé un tube plongeur fixe (14) qui sert à libérer les ouvertures (21) du piston creux (19).
4. Brûleur selon l'une des revendications 1 à 3, caractérisé en ce que les pistons creux sont prévus pour tourner et/ou pour coulisser.
5. Brûleur selon l'une des revendications 1 à 4, caractérisé en ce que l'un des pistons creux (15) est entouré, sur une partie de sa longueur, par une tôle (12) présentant des ouvertures (13).
6. Brûleur selon l'une des revendications 1 à 5, caractérisé en ce que l'un des pistons creux (37) entoure un tube d'arrivée du gaz (30) présentant des ouvertures (31).
7. Brûleur selon l'une des revendications 1 à 6, caractérisé en ce qu'à l'intérieur de l'un des pistons creux (15) est disposé un mélangeur (26).
8. Brûleur selon l'une des revendications 1, 3 à 7, caractérisé en ce qu'un piston creux (15) présente un brûleur tubulaire (19) faisant saillie dans la chaudière (2) et comportant des ouvertures (21) dans sa paroi.
9. Brûleur selon l'une des revendications 1 à 8, caractérisé en ce qu'il est prévu un gabarit pour adapter la quantité d'air à la caractéristique du ventilateur et destiné à être installé sur une tôle d'enveloppe (12) correspondant à un piston creux (15).
EP86901330A 1985-04-11 1986-03-14 Bruleur de combustibles gazeux, en particulier pour une chaudiere de chauffage Expired EP0218602B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86901330T ATE41991T1 (de) 1985-04-11 1986-03-14 Brenner fuer gasfoermige brennstoffe, insbesondere fuer heizkessel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1542/85 1985-04-11
CH1542/85A CH676743A5 (fr) 1985-04-11 1985-04-11

Publications (2)

Publication Number Publication Date
EP0218602A1 EP0218602A1 (fr) 1987-04-22
EP0218602B1 true EP0218602B1 (fr) 1989-04-05

Family

ID=4212849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86901330A Expired EP0218602B1 (fr) 1985-04-11 1986-03-14 Bruleur de combustibles gazeux, en particulier pour une chaudiere de chauffage

Country Status (11)

Country Link
US (1) US4755136A (fr)
EP (1) EP0218602B1 (fr)
JP (1) JPH0735885B2 (fr)
AU (1) AU5541586A (fr)
CA (1) CA1271122A (fr)
CH (1) CH676743A5 (fr)
DE (1) DE3662724D1 (fr)
DK (1) DK163741C (fr)
ES (1) ES8701354A1 (fr)
NZ (1) NZ215688A (fr)
WO (1) WO1986006150A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112005000870B4 (de) * 2004-04-19 2016-11-24 Johann, Carl Morsner Brennkammer mit variabler Düse

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59007002D1 (de) * 1989-01-09 1994-10-13 Fuellemann Patent Ag Brenner zur Verbrennung von gasförmigen Brennstoffen und/oder flüssigen Brennstoffen in gasförmigem Zustand.
DE4032582C2 (de) * 1990-10-13 1994-06-01 Sorg Gmbh & Co Kg Gasbrenner, insbesondere für Glasschmelzöfen
US5240409A (en) * 1992-04-10 1993-08-31 Institute Of Gas Technology Premixed fuel/air burners
ES2063694B1 (es) * 1993-03-29 1998-05-01 Marty Gineste Pierre Carburador para un quemador de gas.
AT402659B (de) * 1995-03-20 1997-07-25 Vaillant Gmbh Modulierbarer brenner modulierbarer brenner
AU1137697A (en) * 1996-01-26 1997-08-20 Ygnis Holding S.A. Burner surface
US6231334B1 (en) * 1998-11-24 2001-05-15 John Zink Company Biogas flaring unit
US6162049A (en) * 1999-03-05 2000-12-19 Gas Research Institute Premixed ionization modulated extendable burner
DE10116726A1 (de) 2001-04-04 2002-10-10 Bosch Gmbh Robert Anlage zur thermischen Behandlung von Werkstücken mit einem explosiven Gasgemisch, insbesondere thermische Entgratanlage
WO2005043037A1 (fr) * 2003-10-21 2005-05-12 Petroleum Analyzer Company, Lp Appareil de combustion ameliore et procedes de fabrication et d'utilisation correspondants
US8591222B2 (en) * 2009-10-30 2013-11-26 Trane International, Inc. Gas-fired furnace with cavity burners
DK3422741T3 (da) * 2014-04-07 2020-08-03 Oticon As Høreapparatanordning der har en batteriskuffe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1480146A (en) * 1919-12-04 1924-01-08 Grant D Bradshaw Process of and apparatus for burning gas
GB317582A (en) * 1928-06-25 1929-08-22 Friedrich Lilge Improvements in or relating to gas, vaporised oil or coal dust burners for furnaces
US2377497A (en) * 1943-01-07 1945-06-05 Robert C Hopkins Air controlled fuel burner
US2863500A (en) * 1952-02-04 1958-12-09 Hauck Mfg Co Fluid fuel burners
CH419022A (de) * 1964-09-03 1966-08-31 Haller Meurer Werke Ag Allgasbrenner für Gasfeuerstätten
FR2255943B1 (fr) * 1973-12-27 1978-06-02 Comp Generale Electricite
CH589822A5 (fr) * 1975-12-11 1977-07-15 Fascione Pietro

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112005000870B4 (de) * 2004-04-19 2016-11-24 Johann, Carl Morsner Brennkammer mit variabler Düse

Also Published As

Publication number Publication date
DK594986D0 (da) 1986-12-11
CH676743A5 (fr) 1991-02-28
DK163741C (da) 1992-09-07
DE3662724D1 (en) 1989-05-11
AU5541586A (en) 1986-11-05
JPS62502492A (ja) 1987-09-24
NZ215688A (en) 1988-06-30
DK594986A (da) 1986-12-11
ES553827A0 (es) 1986-12-01
DK163741B (da) 1992-03-30
CA1271122A (fr) 1990-07-03
EP0218602A1 (fr) 1987-04-22
JPH0735885B2 (ja) 1995-04-19
WO1986006150A1 (fr) 1986-10-23
ES8701354A1 (es) 1986-12-01
US4755136A (en) 1988-07-05

Similar Documents

Publication Publication Date Title
EP0218602B1 (fr) Bruleur de combustibles gazeux, en particulier pour une chaudiere de chauffage
DE2832708C2 (fr)
DE1790092U (de) Brenner fuer fluessige brennstoffe.
DE2043808C2 (de) Verbrennungsvorrichtung zum Betrieb mit Heizgas
DE19728965B4 (de) Vormischender Gasbrenner
DE4032582C2 (de) Gasbrenner, insbesondere für Glasschmelzöfen
DE2428622A1 (de) Brennerkopf, insbesondere fuer gasfoermige brennstoffe
DE4109580A1 (de) Vormischgasbrenner
DE680057C (de) Gasbrenner
DE2752663A1 (de) Gasheizgeraet
DE19806315C2 (de) Treib- und Mischdüse
DE4331231A1 (de) Verfahren zur Regulierung der Flammengüte eines atmosphärischen Gasbrenners und Gasbrenner zur Durchführung des Verfahrens
DE3826279A1 (de) Gasbrenner
AT395764B (de) Vormischgasbrenner
DE19533906A1 (de) Atmosphärischer Gasbrenner
DE1451393A1 (de) Brenner fuer fluessige oder gasfoermige Brennstoffe
DE2431674C2 (de) Mischventil für Verbrennungsanlagen u.dgl.
DE969044C (de) Einrichtung zum Regeln des Druckes eines aus geregelten Teilstroemen gebildeten Gas-Luft-Gemisches
WO2003076846A1 (fr) Bruleur destine notamment a des combustibles liquides ou gazeux
DE19824719C2 (de) Brenner, insbesondere Ölbrenner
AT398343B (de) Vormischgasbrenner
AT396824B (de) Vormischgasbrenner
DE2828319C2 (de) Brenner für flüssigen Brennstoff mit einer zylindrischen Wirbelkammer
DE2160046C3 (de) Zweistoffbrenner
DE2160045C3 (de) Gebläse-Gasbrenner

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

17P Request for examination filed

Effective date: 19861121

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19870819

ITF It: translation for a ep patent filed

Owner name: STUDIO INGG. FISCHETTI & WEBER

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 41991

Country of ref document: AT

Date of ref document: 19890415

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3662724

Country of ref document: DE

Date of ref document: 19890511

ET Fr: translation 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
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 86901330.0

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: YGNIS S.A. TRANSFER- YGNIS AG

NLS Nl: assignments of ep-patents

Owner name: YGNIS AG

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

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

Ref country code: NL

Payment date: 20050303

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20050304

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20050308

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20050309

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20050310

Year of fee payment: 20

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

Ref country code: AT

Payment date: 20050311

Year of fee payment: 20

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

Ref country code: LU

Payment date: 20050316

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20050330

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20050503

Year of fee payment: 20

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

Ref country code: CH

Payment date: 20050603

Year of fee payment: 20

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20060313

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 EXPIRATION OF PROTECTION

Effective date: 20060314

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20060314

EUG Se: european patent has lapsed
BE20 Be: patent expired

Owner name: *YGNIS A.G.

Effective date: 20060314