EP0006774B1 - Brûleur pour combustible liquide - Google Patents

Brûleur pour combustible liquide Download PDF

Info

Publication number
EP0006774B1
EP0006774B1 EP79400317A EP79400317A EP0006774B1 EP 0006774 B1 EP0006774 B1 EP 0006774B1 EP 79400317 A EP79400317 A EP 79400317A EP 79400317 A EP79400317 A EP 79400317A EP 0006774 B1 EP0006774 B1 EP 0006774B1
Authority
EP
European Patent Office
Prior art keywords
burner
mixing chamber
combustion
duct
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.)
Expired
Application number
EP79400317A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0006774A2 (fr
EP0006774A3 (en
Inventor
Joseph Le Mer
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.)
Bosch Thermotechnologie SAS
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT79400317T priority Critical patent/ATE1869T1/de
Publication of EP0006774A2 publication Critical patent/EP0006774A2/fr
Publication of EP0006774A3 publication Critical patent/EP0006774A3/xx
Application granted granted Critical
Publication of EP0006774B1 publication Critical patent/EP0006774B1/fr
Expired legal-status Critical Current

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
    • 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
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/443—Vaporising devices incorporated with burners heated by the main burner flame
    • F23D11/445—Vaporising devices incorporated with burners heated by the main burner flame the flame and the vaporiser not coming into direct contact

Definitions

  • the invention relates to a burner for liquid fuels and more particularly still, a self-cleaning combustion head with integral combustion.
  • the liquid fuel is atomized by means of a nozzle, then mixed with air in a combustion head, before burning in a yellowish flame.
  • a system based on this technique requires, for the combustion to be good, that the flame occurs in a sufficiently large space, so that all the particles of atomized fuel have time to burn.
  • the hearth where this form of combustion occurs is too small, the non-consumed liquid particles are projected onto the walls which, at too low a temperature, cause condensation and some pollution (soot, tar, etc.); it follows that the combustion efficiency and the heat exchange coefficient of the exchanger decrease by the insulation caused by the soot film which is interposed between the flame and the wall of the hearth.
  • the minimum flow rate of the sprinklers is limited.
  • One of the aims of the invention is to reduce the volume of the combustion gases, thereby allowing the dimensions of the exchanger of the heating apparatus, and in particular of the hearth, to be reduced. Indeed, combustion in the presence of a blue flame, at very high temperature, as caused by the apparatus described in the present invention, makes it possible to reduce the combustion chamber by at least 90% and therefore to reduce the weight and therefore the cost price of the devices in a high proportion.
  • Another object of the invention is to allow perfect combustion of a liquid fuel, whatever the desired power, very low (less than 1 liter per hour) or very high (several tens of liters per hour), without the presence spray members, such as a sprinkler.
  • such combustion for example in the form of an absolutely blue flame, depending on the type of fuel used, avoids any pollution of the atmosphere.
  • American patent 1 668 773 shows a burner provided with an inverted and closed bell-shaped vaporization chamber which communicates with a mixing chamber through a distribution chamber.
  • the fuel is vaporized then mixes with combustion air and burns.
  • This device has significant drawbacks and in particular poor vaporization of the fuel.
  • the mixing chamber has a shape and means for draining the non-vaporized fuel while there is even provided a device for adjusting the supply controlled by non-vaporized fuel.
  • French patent 530 058 shows a complex device in which the gasification of oils is produced by spreading in a thin layer obtained by means of an air stream.
  • a first phase it involves performing a gasification or vaporization of the liquid fuel, away from the flame. Then, in a second phase, it is imperative to mix the vaporized fuel with an oxidizer such as air, in a special chamber and still sheltered from the flame, so as to obtain a stoichiometric mixture. Finally, in a third phase, the mixture thus obtained is burned in an appropriate zone, separate from the vaporization and mixing zones.
  • an oxidizer such as air
  • the film spraying makes it possible, in fact, to avoid any contact between the wall of the spraying element and the liquid to be vaporized, which avoids any possible fouling of this element, while carbonization by pyrolysis, which consists in bringing to high temperature certain parts of the burner, eliminates particularly dense and fatty, non-vaporizable elements.
  • the film vaporization is in fact a caléfaction, maintained in an appropriate device, if we consider that the caléfaction is the physical process of vaporization of a drop of liquid, by a wall, at high temperature, this drop not being in contact with said wall, as a result of the existence of a vapor film, emitted from the drop itself, under the effect of the thermal energy transmitted by the wall.
  • the inventor proposes a burner for liquid fuels provided with a hollow vaporization element, a means of initiating combustion, a means of pre- heating for starting, of a mixing chamber which communicates with the vaporization element and which also receives an oxidizer, of a combustion grate or flame holder and whose arrangement of the vaporization element is such that the combustion flame heats the latter, remarkable in that the vaporizing element is formed by an open tubular duct or duct, in the form of a serpentine in a fixed body and in which is conveyed, by an oxidizing vector fluid or not, the liquid fuel, said channel or conduit opening directly or indirectly into the mixing chamber while the preheating means is formed by an electrical resistance integrated in the body and the shape of the latter is such that the fl combustion core licks said body in part.
  • the liquid fuel feeds the burner through an intake pipe, opening at the entrance of the channel or vaporization duct, while the carrier fluid, in the form of gas, or air
  • Such a device makes it possible in particular to obtain a film vaporization and a carbonization of the fatty elements, by pyrolysis, thereby avoiding any risk of fouling.
  • the above-mentioned fixed combustion head has very advantageous mechanical reliability, in particular in the case of use in low-power domestic appliances.
  • a burner according to the invention makes it possible to equip boilers and generators, the design of which is particularly studied to receive a blue flame, at high temperature.
  • the conduit in which the fuel is conveyed consists of a tubular coil embedded, for example by overmolding, in the body of the burner.
  • the mixing chamber preferably consists, at least in part, of the body, in such a way that it is continuously heated during combustion.
  • a reversing contact thermostat may be provided to shut down the starting heating means at the desired temperature, for example in the form of a heating resistance, and on the one hand to cause the arrival of the liquid fuel and the carrier agent.
  • the actuation of the combustion initiation means for example in the form of an electrode, controlled by means of a regulation box and a transformer .
  • the body may have a substantially annular shape, preferably flared towards the outside, while a combustion grate or flame holder is arranged in the central part, so that the flame has a central position and licks said body by the interior.
  • the mixing chamber is preferably constituted, at least in part, by the body, which for this purpose has in its central part a form of bowl, in which the oxidant enters through one or more openings formed in it. this.
  • a final mixing chamber is arranged between the combustion grate or flame holder and the mixing chamber, by means of a separator constituted by a plate, provided with a central duct which plunges into the mixing chamber.
  • the mixing chamber has a central oxidant inlet orifice, arranged in the lower wall thereof and provided with a flange with converging walls directed towards the separator duct and substantially coaxially, said conduit having a divergent shape or walls.
  • the body provided with the channel or vaporization duct has a frustoconical shape
  • the mixing chamber is formed by an interior recess of the body and that said channel, constituted by a tubular coil is arranged in helix in said body around the recess and communicates with the latter, the combustion grate being arranged around the lower part of the body, while an annular chamber of final mixture is provided under the combustion grate and communicates with the chamber mixture.
  • a casing is fixed under the mixing chamber and has an orifice, for letting pass the intake pipe of the liquid fuel, an orifice for the carrier and an orifice for the oxidant, thus constituting room.
  • the carrier agent and the oxidizer are air, a single orifice in the casing then being provided for this air, which goes partly into the vaporization duct and partly into the mixing chamber.
  • the device according to the invention makes it possible to use another vector agent, as has already been said, the mixing with the oxidizing air taking place in the chamber provided for this purpose.
  • the new burners for liquid fuel according to the invention will also be able to equip a new generation of heating appliances.
  • heat exchangers and heat pumps having a liquid fuel as supplementary energy, instead of electricity.
  • small domestic heaters operating by suction cup, thus avoiding the traditional chimney, since the combustion gases can be directly discharged into the atmosphere.
  • the main figures 1, 3 and 5 represent three embodiments according to the invention.
  • the first digit indicates the number of the main figure in which it is represented.
  • the digit or digits following the first digit of each reference are identical when it comes to designating elements or bodies having similar or similar functions.
  • the burner according to the invention comprises a molded body. 18, 38, 58 made of metal, alloy or other material, resistant to high temperatures.
  • This body is provided with a vaporization duct 12, 32, 52 generally constituted by a molded tubular coil, the inlet and outlet ends of which are referenced respectively by 13, 33 and 19, 39, 59.
  • An electrical resistance of annular preheating 17, or in the form of a central bar 37, is embedded in the body of the burner.
  • An intake pipe 14, 34, for the liquid fuel, is arranged at the entrance to the vaporization duct.
  • the conduit 12, 32, 52 opens in 19, 39, 59, in a mixing chamber 111, 311b, 511, formed in part by the body, while another final mixing chamber 113, 313, 513, before combustion , is provided under a combustion grate or flame holder 115, 315, 515.
  • An ignition or combustion ignition electrode 119 and an ionization flame control electrode 120 are fixed in the body 18 by means of locking screws, screwed into suitable orifices 112, while a thermostat (not shown) with reversing contact is arranged under said body, for example.
  • Figures 1, 2 and 5 show embodiments, in which the body 18, 58 has a substantially annular shape, flared outwards, while the mixing chamber 111, 511 is constituted by said body, which has at this effect, in its central part, a bowl shape.
  • the final mixing chamber 113, 513 is determined by a combustion grate or flame holder 115, 515 and a separator 117, 517, provided with a duct in the form of a central well, which plunges into said mixing chamber 111, 511.
  • the combustion grate 115 is held by means of a screw 116, which passes through the separator duct 117 and which is screwed into the part of the body constituting the lower wall of the mixing chamber 111, while the grid 515 of FIG. 5 is fixed by a screw 518 'screwed into the casing 518.
  • the mixing chamber 111 (FIG. 1) is provided with a plurality of peripheral orifices 110, which are preferably slightly inclined relative to a radial position.
  • the body 58 in the part constituting the mixing chamber 511, is provided with a central orifice 510, provided with a flange 527 with converging walls and arranged in a substantially manner coaxial with the conduit of the separator 517, the latter having a divergent shape or walls.
  • the combustion grate 115 is provided with a plurality of slots 114, arranged radially, while the grate 515, disposed above the separator 517, forms an annular slot 514.
  • the combustion grate 515 is provided with a tubular element central which fits into the conduit of the separator 517 and which is provided with a plurality of orifices 532 for communication between the chambers 511 and 513.
  • FIG. 3 shows a substantially frustoconical body 38, provided with a central heating resistor 37, already mentioned, in the form of a bar.
  • the body 38 is provided with an internal recess which has an upper part 311a and a lower part 311b arranged respectively above and below the resistor 37 and which communicate with each other by conduits 323.
  • the upper part 311a of the recess is closed by a cover 326 while the part 311b is closed by a seal 322 made of insulating material, disposed between the body 38 and the casing 318, so that the chamber 36 is located just below and that the orifices 310 are formed in said seal opposite the air inlet orifice 35.
  • part 31la opens at 39 the vaporization conduit 32 while part 311b constitutes the mixing chamber.
  • the annular combustion grate 315 is arranged around the body 38.
  • the mixing chamber 311 b communicates with the final mixing chamber 313 by tangential outlet channels 325, while a ring 321 is arranged on the joint 322, in the final mixture 313.
  • the electrical resistance 17, 37 is firstly energized.
  • a thermostat (not shown) with reversing contact, cuts said resistance and simultaneously allows the arrival of liquid fuel through the intake pipe 14, 34 and the air inlet through the orifice 15, 35.
  • This thermostat suitably placed under the body 18, 38, 58 for example, causes at the same time and by means of a regulating box and a transformer, electric arcs at the level of the ignition electrode 119 In this way, the liquid fuel arrives at the inlet 13, 33 of the conduit 12, 32, 52 through the intake pipe 14, 34, at the same time as the air which comes from the chamber 16, 36, 56. powered by 15, 35.
  • the vaporized fuel mixes intimately with the combustion air which arrives through the orifices 110, 310, 510 after having been reheated in the preheating chamber 16, 56.
  • the mixing is facilitated in the embodiment of Figure 1, by the tangential inclination of the orifices 110, which causes a ciruclar movement of the gases.
  • the oxidizing air and the vaporized fuel then flow into the final mixing chamber 113, 313, 513.
  • the mixture obtained passes through the central duct of the separator 117, 517.
  • the converging walls of the edge of the orifice 510 and the diverging walls of the central duct of the separator 517 constitute a diverging convergent which has the effect of appreciably improving the circulation of the fuel in the spray duct.
  • the vaporized fuel arrives in part 31 a and mixes with the combustion air in part 311b, while the channels with tangential outlets allow a vortex mixture of the gases in chamber 313, while the ring 321 results in good homogeneity of said gases.
  • the mixture obtained in chamber 113, 313, 513 escapes through the grid 115, 315, 515 and ignites instantly by means of the electrode 119, while the electrode 120 controls the flame by ionization and makes it possible to immediately stop supplying the ignition transformer if there is no flame.
  • This flame control can also be obtained by means of an ionization cell, if desired.
  • the molded body 18, 38, 58 is thus heated by the flame resulting from the combustion of the combustible mixture which leaves through the slots 114, 314, 514, with a sufficient speed to prevent combustion from forming under the grate 115, 315 , 515.
  • the communication section of the separator 117, 517, constituted by its central duct, in the embodiments of FIGS. 1 and 5, must represent an area in relation to the total area of the slots 114 and 514.
  • the shape of the molded body 18, 38, 58, which represents a surface 11, 31, 51, in contact with the flame determines the shape of said flame, which can be inside ( Figures 1, 2 and 5) or at the exterior (FIGS. 3 and 4) of said body, that is to say having a central or annular position.
  • the body 18, 38, 58 allows thermal conduction between the resistor 17, 37 and the tubular coil constituting the vaporization conduit, and at the same time between the flame and said coil which is brought to high temperature.
  • the fuel which undergoes a film vaporization is transported by air, which serves as a carrier.
  • air which serves as a carrier.
  • another carrier separate from the combustion air, as it would be possible, to bring the combustion air in its entirety through the inlet of the vaporization duct.
  • the vaporization duct may not be provided with an overmolded coil
  • the carrier agent may be something other than air
  • the housing 118, 318, 518 may be removed, etc.
  • the shapes of the body and of the combustion grates can be different, as well as the shape of the slots of said grids, constituted for example by circular orifices or otherwise.
  • the main object of the invention is to provide a good combustion process and a burner as described above, in which the vaporization duct or channel is arranged in the fixed body, so as to be sufficiently heated by the flame, but protected from it, to allow a film vaporization of the liquid fuel conveyed by the carrier fluid through said channel or conduit, while the mixing chamber makes it possible to obtain a mixture in stoichiometric proportion, at 1 shelter from flame, pre-vaporized fuel and oxidizer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
  • Feeding And Controlling Fuel (AREA)
EP79400317A 1978-06-26 1979-05-21 Brûleur pour combustible liquide Expired EP0006774B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79400317T ATE1869T1 (de) 1978-06-26 1979-05-21 Brenner fuer fluessige brennstoffe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7818998 1978-06-26
FR7818998A FR2429967A1 (fr) 1978-06-26 1978-06-26 Procede de combustion d'un combustible liquide et bruleur pour sa mise en oeuvre

Publications (3)

Publication Number Publication Date
EP0006774A2 EP0006774A2 (fr) 1980-01-09
EP0006774A3 EP0006774A3 (en) 1980-01-23
EP0006774B1 true EP0006774B1 (fr) 1982-11-24

Family

ID=9209973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400317A Expired EP0006774B1 (fr) 1978-06-26 1979-05-21 Brûleur pour combustible liquide

Country Status (8)

Country Link
US (1) US4302180A (enrdf_load_stackoverflow)
EP (1) EP0006774B1 (enrdf_load_stackoverflow)
JP (1) JPS556195A (enrdf_load_stackoverflow)
AT (1) ATE1869T1 (enrdf_load_stackoverflow)
CA (1) CA1123285A (enrdf_load_stackoverflow)
DE (1) DE2964084D1 (enrdf_load_stackoverflow)
ES (1) ES481230A1 (enrdf_load_stackoverflow)
FR (1) FR2429967A1 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776787A (en) * 1987-04-22 1988-10-11 Hsie Ching Hai Kerosene gasifying and combusting apparatus
DE58904694D1 (de) * 1988-03-25 1993-07-22 Michelberger Bruno J Verdampfungsbrenner.
DE4238718A1 (de) * 1992-11-17 1994-05-19 Hoval Interliz Ag Vaduz Neugut Verfahren und Vorrichtung zum Verbrennen von Heizöl
US5812312A (en) * 1997-09-04 1998-09-22 Lorincz; Andrew Endre Microscope slide
EP1523537A1 (en) * 2002-07-19 2005-04-20 Shell Internationale Researchmaatschappij B.V. Use of a blue flame burner
JP2005533235A (ja) * 2002-07-19 2005-11-04 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ 黄炎式バーナーの使用
EP1549881B1 (en) 2002-10-10 2016-02-03 LPP Combustion, LLC System for vaporization of liquid fuels for combustion and method of use
JP4920597B2 (ja) 2004-12-08 2012-04-18 エル・ピー・ピー コンバスション エル・エル・シー 液体炭化水素燃料を調整する方法および装置
US8529646B2 (en) 2006-05-01 2013-09-10 Lpp Combustion Llc Integrated system and method for production and vaporization of liquid hydrocarbon fuels for combustion
CH700919B1 (de) * 2007-10-01 2010-11-15 Toby Ag Brenner mit einer Verdampferkammer.
WO2009094677A2 (en) * 2008-01-25 2009-07-30 Buzbee (Pty) Ltd A fuel burner system
JP2010230257A (ja) * 2009-03-27 2010-10-14 Dainichi Co Ltd 燃焼装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE428711C (de) * 1926-05-12 Eduard Straub Vergaserbrenner
FR530058A (fr) * 1920-01-13 1921-12-13 Procédé et appareil pour l'utilisation des huiles pour le chauffage des fours
GB176929A (en) * 1921-01-04 1922-03-23 Champion Kerosene Burner Co Improvements in kerosene burning apparatus
US1464995A (en) * 1921-06-23 1923-08-14 Harry G Miller Oil burner
US1668773A (en) * 1925-07-06 1928-05-08 Branch Louis La Oil burner
US2162432A (en) * 1935-12-06 1939-06-13 Sylvia Remsen Hillhouse Method of burning oil as gas
US2647567A (en) * 1951-07-30 1953-08-04 Ernest F Ciglia Oil burner
GB741769A (en) * 1953-10-06 1955-12-14 Stanton Willis Bates Improvements in or relating to hydrocarbon vapour burners
FR1388449A (fr) * 1964-04-08 1965-02-05 Robert Fischbach K G Brûleur à évaporation pour combustibles liquides
FR1477393A (fr) * 1966-04-27 1967-04-14 Comb Efficiency Corp Brûleur combiné pour carburants liquides et gazeux
CH488148A (de) * 1966-09-16 1970-03-31 Gysi Olga Verfahren zur vollständigen, russfreien Verbrennung von flüssigem Brennstoff, insbesondere Schwerbrennstoff, und Verbrennungsanlage zur Durchführung dieses Verfahrens
JPS4523717Y1 (enrdf_load_stackoverflow) * 1968-01-24 1970-09-18
AU2182067A (en) * 1968-05-15 1969-11-20 Collier Edwards Alan Improved liquid fuel burner
DE2054479A1 (de) * 1970-11-05 1972-05-10 Lurz A Vergasölbrenner
US4013396A (en) * 1975-08-25 1977-03-22 Tenney William L Fuel aerosolization apparatus and method
US4008041A (en) * 1975-10-02 1977-02-15 Gerald Alton Roffe Apparatus for the gas phase combustion of liquid fuels

Also Published As

Publication number Publication date
ES481230A1 (es) 1979-11-16
ATE1869T1 (de) 1982-12-15
FR2429967B1 (enrdf_load_stackoverflow) 1981-12-31
US4302180A (en) 1981-11-24
JPS556195A (en) 1980-01-17
DE2964084D1 (en) 1982-12-30
EP0006774A2 (fr) 1980-01-09
CA1123285A (fr) 1982-05-11
FR2429967A1 (fr) 1980-01-25
EP0006774A3 (en) 1980-01-23

Similar Documents

Publication Publication Date Title
EP0152317B1 (fr) Chaudière comportant une chambre de préchauffage du comburant
EP0006774B1 (fr) Brûleur pour combustible liquide
FR2499678A1 (fr) Bruleur, chaudiere, ensemble les comprenant et procede pour bruler un combustible liquide
EP0350388B1 (fr) Perfectionnements aux appareils de production d'eau chaude
FR3033025A1 (fr) Alambic equipe d'un tour a feu a deux etages
EP1563228A1 (fr) Appareil de chauffage a haut rendement
FR3033026B1 (fr) Alambic equipe d'un bruleur a gaz ameliore
FR2536505A1 (fr) Bruleur a gazeification pour combustibles liquides
FR3033027A1 (fr) Alambic equipe d'un tour a feu avec isolation renforcee
EP1172607A1 (fr) Brûleur à mélange de gaz et d'air à puissance accrue
EP0189708B1 (fr) Générateur d'eau chaude à gaz
CH339196A (fr) Procédé de pyrolyse d'un hydrocarbure saturé, et appareil pour sa mise en oeuvre
FR2678356A1 (fr) Bruleur catalytique a air induit.
EP0427650A1 (fr) Brûleur pour combustible gazeux
EP0549416A1 (fr) Brûleur perfectionné à grille ainsi qu'installation de chauffage équipée d'un tel brûleur
EP0854323A1 (fr) Chambre de combustion d'air chargé de particules combustibles
WO1992019920A1 (fr) Chaudiere de chauffage central et/ou de production d'eau chaude sanitaire, bruleur pour combustible gazeux, et installation de chauffage central et de production d'eau chaude sanitaire utilisant ladite chaudiere
EP3178578B1 (fr) Installation d'incineration de dechets et procede associe
FR2478796A1 (fr) Appareil de chauffage, notamment d'eau
FR2751735A1 (fr) Chaudiere de chauffage central a bruleur fioul
FR2726893A1 (fr) Chaudiere destinee au chauffage d'un fluide de travail
EP0089924A1 (fr) Brûleur à gaz
EP1021687B1 (fr) Chauffe-eau à gaz
FR2461893A1 (fr) Generateur d'eau chaude, notamment chaudiere de chauffage central
FR2608736A1 (fr) Chaudiere de chauffage central a combustible solide

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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

AK Designated contracting states

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

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

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

REF Corresponds to:

Ref document number: 1869

Country of ref document: AT

Date of ref document: 19821215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 2964084

Country of ref document: DE

Date of ref document: 19821230

REG Reference to a national code

Ref country code: CH

Ref legal event code: PVP

Owner name: CREDIT D'EQUIPEMENT DES PETITES ET MOYENNES ENTREP

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

NLS Nl: assignments of ep-patents

Owner name: GEMINOX S.A. TE ST. THEGONNEC, FRANKRIJK.

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;GEMINOX SOC. ANONYME

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

Ref document number: 79400317.8

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

Ref country code: GB

Payment date: 19980427

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: 19980430

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: 19980514

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: 19980518

Year of fee payment: 20

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

Ref country code: SE

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

Effective date: 19980522

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

Ref country code: NL

Payment date: 19980531

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: 19980609

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: 19980810

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: 19980922

Year of fee payment: 20

BE20 Be: patent expired

Free format text: 19990521 S.A. *GEMINOX

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 NON-PAYMENT OF DUE FEES

Effective date: 19990520

Ref country code: CH

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19990520

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: 19990521

Ref country code: LU

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19990521

Ref country code: AT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19990521

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Effective date: 19990520

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 79400317.8

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

Effective date: 19990521

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