EP0051036A1 - Oberflächenwärmetauscher zur Wärmerückgewinnung - Google Patents

Oberflächenwärmetauscher zur Wärmerückgewinnung Download PDF

Info

Publication number
EP0051036A1
EP0051036A1 EP81440023A EP81440023A EP0051036A1 EP 0051036 A1 EP0051036 A1 EP 0051036A1 EP 81440023 A EP81440023 A EP 81440023A EP 81440023 A EP81440023 A EP 81440023A EP 0051036 A1 EP0051036 A1 EP 0051036A1
Authority
EP
European Patent Office
Prior art keywords
fluid
exchanger according
conduit
water
duct
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
EP81440023A
Other languages
English (en)
French (fr)
Other versions
EP0051036B1 (de
Inventor
Christian Grué
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.)
GRUE, CHRISTIAN
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 AT81440023T priority Critical patent/ATE12542T1/de
Publication of EP0051036A1 publication Critical patent/EP0051036A1/de
Application granted granted Critical
Publication of EP0051036B1 publication Critical patent/EP0051036B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates

Definitions

  • the present invention relates to surface heat exchangers intended to recover, by a circulating fluid, the waste heat contained in the heat transfer effluents.
  • the invention applies in particular to heat transfer effluents which can easily be channeled in a discharge pipe, such as the combustion fumes produced, for example, in industrial ovens or boilers of heating installations.
  • heat recuperators aim in particular to better use of fuels and are therefore part of the set of measures which contribute to providing an answer to the ever more pressing energy saving requirements.
  • this lost smoke can be a free source of energy, for example for the production of domestic hot water, or for heating the water returning to the boiler in central heating installations. .
  • recuperators of the first family is penalized by an exchange surface which is necessarily limited not only in size, but also by its location at the periphery of the hot gas stream.
  • the object of the present invention is to succeed in extracting the maximum number of calories from the combustion fumes and, more generally from any heat-carrying effluent, while disturbing their flow as little as possible.
  • the subject of the invention is a surface heat exchanger for the recovery, by a circulating fluid, such as water, of the waste heat contained in the heat transfer effluents, in particular in the combustion fumes, and comprising two concentric ducts: an inner duct through which the heat-transfer effluents to be cooled pass and an outer duct surrounding the inner duct at a distance so as to define between them an annular space forming a wall of water in which the fluid to be heated circulates, exchanger characterized in that the water wall is with multiple passages, and in that it comprises at least one water tube traversing longitudina The central region of the interior duct and mounted in parallel with the water wall.
  • a circulating fluid such as water
  • multiple passage water wall is meant a compartmentalisation of the annular space allowing the fluid to be heated to circulate in a longitudinal serpentine path, by means of rectilinear fins arranged in parallel and in staggered rows according to the generatrices of the inner duct, or along a helical path, for example, by means of a spiral fin surrounding the inner duct.
  • the water tubes placed longitudinally in the central part of the inner duct will seek the remaining calories where they are, that is to say at the very heart of the vein. smoke, thus combining their action with that of the water wall to extract the maximum amount of smoke from the smoke in favor of the water to be heated. This is achieved without significantly disturbing the flow of smoke, since the tubes are arranged longitudinally.
  • the efficiency of the exchange also causes significant condensation of the water vapor contained in the fumes. This elimination of the vapor in liquid form within the exchanger is favorable from all points of view.
  • bent ends which, far from representing an obstacle to the flow of smoke, on the contrary constitute cold spots favoring the condensation of steam.
  • the partitioning fins being advantageously made of a material which is a good conductor of heat - generally metal - the exchange surface at this level is therefore increased and with it, the overall heat flux.
  • one end of the flue pipe -corresponding to the entry of the flue gases into the exchanger- comprises means for giving the peripheral part of the gas flow a gyratory movement which further improves the transfer of calories by increasing the duration of the exchange with the water wall.
  • these means consist of fins fixed on edge against the inner surface of the flue pipe and angularly offset in the same direction relative to the longitudinal axis of the pipe so as to be outside any passing plane by this axis.
  • the device is technologically simple, robust and reliable. Its construction poses no particular difficulty since all of its constituent elements can be found easily in commerce and at low cost.
  • the recuperator 1 shown in FIGS. 1 and 2 is mainly formed by two concentric remote conduits, respectively interior 2 and exterior 3, defining a central passage 4, for the combustion fumes to be cooled, and a peripheral annular space 5 for a circulation of water to be heated.
  • the space 5 is closed at its ends by means of flanges 6 and 7. It communicates with the external medium by pipes 8 and 9 provided on the external tube 3 in the vicinity of the flanges 6 and 7 respectively, in diametrically opposite angular positions and serving respectively for the introduction and the exit of the water to be heated, as indicated by the direction of the arrows in the figures.
  • the passage 4 is traversed longitudinally by tubes 1 0 (here three in number) located in the central portion of the passage adjacent the longitudinal axis of the symbolized exchanger 11.
  • the tubes 10 are mounted in diversion on the annular space 5 and for this purpose have curved ends at right angles opening into this space by means of openings 12 and 13 formed in the wall of the interior conduit 2, in the vicinity of the pipes 8 and 9 respectively.
  • the annular space 5 is compartmentalized so as to constitute a wall of water with multiple passages.
  • the compartmentalization is carried out by means of fins 14, arranged in parallel along the generatrices of the inner conduit 2 and spaced from one another so as to define between them longitudinal water chambers.
  • the fins 14 are advantageously constituted by simple steel plates of very elongated rectangular shape and having a slightly shorter length (10 cm for example) than the distance separating the two closing flanges 6 and 7. They are offset longitudinally l '' in relation to the following in a staggered arrangement so as to come into abutment by one end alternately against one and then the other flange, the other end then being free to provide between it and the neighboring flange a passage of communication between two adjacent water rooms.
  • the number of fins has been limited to four, so that the compartmentalisation has a structure in three superposed stages: an upper inlet stage 15A provided with the inlet pipe 8, an outlet stage lower 15 C comprising the starting pipe 9 and an intermediate stage composed of the two compartments 15'g and 15 " B symmetrical on either side of the plane passing through the pipes 8 and 9.
  • the partition fins 14 are distributed around the inner tube 2 with variable spacings so that the passage section of the water chambers is not equal in the stages, but gradually decreases from the input stage 15A to the output stage 15 C.
  • This particular arrangement has the advantage of providing the water in the space 5 with an exchange surface which is all the greater the lower its temperature.
  • the water is speeded up as it warms up, which is also favorable from a thermal point of view, for example with regard to the risks of calefaction. We find here, the explanation of the remark made previously concerning the reversibility of the roles of the pipes 8 and 9.
  • a circulation of the type against the current of water is favored with respect to the flow of fumes.
  • This condition is always satisfied when, as shown in FIG. 1, the inlet pipe 8 is placed at the downstream end of the recuperator with respect to the direction of flow of the fumes (indicated by the arrow on the axis 11).
  • the water wall 5 comprises two counter-current passages (stage 15A and 15 C ) for a co-current passage (stage 15 B ).
  • stage 15A and 15 C for a co-current passage
  • the direction of circulation of the water and the fumes has been indicated by the conventional symbols.
  • the passages in co- and counter-current of the water wall 5 are in equal number, independently of the choice of the inlet pipe.
  • closing flanges 6 and 7 on the periphery of the inner conduit 2 and preferably about 1 5 or 20 cm from these ends so as to provide free end portions which will allow easy mounting of the device on the installation for which it is intended.
  • These flanges are of slightly different sizes: one of them, for example the flange 6, has a diameter equal to the outside diameter of the duct 3, while the flange 7 has a diameter equal to the inside diameter of the duct 3 and determines so the thickness of space 5.
  • the openings 10 and 11 are drilled and the central tubes 10 are fixed by sealed welding to the edge of the orifices made from the outside of the duct 2.
  • the tubes 10 were shaped as "S" by bending the ends in opposite directions, from sections of drawn steel tube that are readily available commercially.
  • the fins 14 are then placed on edge on the inner duct 2, taking care to press one of their ends against one of the closing flanges, so as to make a staggered arrangement, as explained above.
  • the fins, which have a height equal to that of the small flange 7, are then fixed permanently by welding.
  • the two openings intended to receive the pipes 8 and 9 for the inlet and outlet of the water are drilled on the outer conduit 3.
  • the pipes 8 and 9 are attached by welding to the external pipe 3. It is advantageous to complete the construction by insulating the recuperator by means of a thermal insulation envelope placed around the external pipe 3. This envelope has not been shown so as not to overload the figures unnecessarily.
  • FIG. 3 a central heating installation equipped with an exchanger-recuperator according to the invention.
  • a boiler supplying hot water, by a conventional system of closed loop pipes comprising a four-way valve 19 and an accelerator 20, a set of radiators 21 for heating living quarters.
  • the combustion fumes exit at the rear of the boiler to reach the exhaust vent chimney, shown at 22.
  • the heat exchanger-recuperator 1 is installed between the boiler and the chimney 22, replacing the usual boiler outlet pipe.
  • the installation is carried out without particular difficulty thanks to the free end portions of the internal conduit which protrude on either side of the apparatus and which allow by simple fitting to be connected to two bent elements 23 and 24 which have been provided to ensure vertical orientation of the recuperator.
  • recuperator can be placed in any position. It nevertheless remains desirable to keep a slight inclination on the horizontal, positive in the direction of the flow of the fumes, in order to favor by an orifice such as 25, provided between the recuperator and the boiler (or on the free end part of inner duct), the evacuation of condensates, in particular the water formed in the inner duct by condensation of the water vapor contained in the flue gases.
  • the recuperator 1 is used as a heater: the heating water, which leaves cooled from the radiators 21, returns to the boiler 18 by first passing through the recuperator 1, which in this case constitutes an accessory of the heating system which improves the redement and therefore allows an eco nomie of fuel.
  • a circulator may advantageously be provided on the outlet pipe 9 of the heater.
  • the overall thermal efficiency is further significantly improved thanks to a homogenization of the water temperature within the boiler, due to a permanent stirring effect.
  • compartmentalization can be achieved, not only by means of the longitudinal reactive fins 14, but also using for example a single helical fin wound on edge around the inner duct 2.
  • the number of central tubes cannot be fixed a priori for all cases. It essentially depends on the local conditions of use of the recuperator and must be determined in each case in relation to the diameter of the tubes chosen so as not to create in the flow a backpressure which is difficult to accept for the heating installation.
  • the smoke outlet pipes of the usual heating systems are generally oversized for safety reasons, so that a reduction in the cross-sectional area in a proportion which can range up to approximately 20% remains entirely - made acceptable.
  • the water tubes 10 can be mounted as a bypass. total or only partial on the water wall 5.
  • the example described with reference to Figures 1 and 2 corresponds to a total bypass since the openings 12 and 13 on the inner tube 2 were formed in the immediate vicinity of the inlet pipes 8 and outlet 9. Dais it is possible to provide these openings at other places on the inner tube 2 so as to achieve a partial diversion of the tubes 10 on the water wall 5.
  • Such an arrangement is necessary moreover of itself in the case of a water wall with parallel circuits and with an even number of stages, as this is easily understood.
  • total diversion can take place not only through the openings 12 and 13 on the inner tube 2, but by any other appropriate means, for example by direct connection of the central tubes 10 to the pipes 8 and 9. .
  • recuperator is placed in a water circuit of the "open" type, for example in the case of use for direct production of domestic hot water,
  • the internal duct 2 is provided, at its end through which the smoke enters, with means for imparting a gyratory movement to the peripheral part of the flowing gas stream. In this way, the duration of passage of the fumes against the wall of the interior duct 2 is increased and the heat transfer is further improved.
  • the means used can be deflecting fins 26, constituted by simple metal plates fixed on edge against the inner wall of the duct 2 and angularly offset, for example by 40 °, approximately, all in the same direction with respect to the generatrices of the duct 2 so as to be situated outside any plane passing through the axis of symmetry 11.
  • the fins 26 are about ten centimeters in length and their height is about a quarter of the diameter of the tube 2 so as to only rotate the peripheral part of the flue gas flow without preferably disturbing the central region where the longitudinal water tubes 10 not shown in this figure.
  • the recuperator according to the invention can not only be installed between the boiler and the chimney, on existing installations, but also be provided for manufacturing on new boilers.
  • the application of the recuperator according to the invention is not limited to the field of central heating for heating the return water from the radiators or for the production of domestic hot water, but extends, as is the case. '' has already said, on recovery, by means of a surface exchanger, of the calories contained in any heat transfer effluent, insofar as the latter is or can be channeled in a discharge pipe,

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP81440023A 1980-10-23 1981-10-20 Oberflächenwärmetauscher zur Wärmerückgewinnung Expired EP0051036B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81440023T ATE12542T1 (de) 1980-10-23 1981-10-20 Oberflaechenwaermetauscher zur waermerueckgewinnung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8022751A FR2492962A1 (fr) 1980-10-23 1980-10-23 Echangeur thermique a surface pour la recuperation de chaleur
FR8022751 1980-10-23

Publications (2)

Publication Number Publication Date
EP0051036A1 true EP0051036A1 (de) 1982-05-05
EP0051036B1 EP0051036B1 (de) 1985-04-03

Family

ID=9247263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81440023A Expired EP0051036B1 (de) 1980-10-23 1981-10-20 Oberflächenwärmetauscher zur Wärmerückgewinnung

Country Status (4)

Country Link
EP (1) EP0051036B1 (de)
AT (1) ATE12542T1 (de)
DE (1) DE3169715D1 (de)
FR (1) FR2492962A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2926102A1 (es) * 2021-04-13 2022-10-21 Kalfrisa S A Recuperador de calor y metodo de recuperacion de calor asociado al mismo

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070804A (en) * 1935-04-06 1937-02-16 Payson Rudolph Heating apparatus
FR1095966A (fr) * 1953-02-14 1955-06-08 Conduit tubulaire pour échangeurs de chaleur
GB818730A (en) * 1957-02-01 1959-08-19 A E Greaves And Son Ltd Improvements relating to heat-exchangers
FR1409030A (fr) * 1963-09-16 1965-08-20 Patterson Kelly Co Canal d'échange de chaleur
DE1501588A1 (de) * 1964-11-25 1969-10-30 Olin Mathieson Waermeaustauscher und Verfahren zu seiner Herstellung
GB1291572A (en) * 1969-04-02 1972-10-04 Curwen & Newberry Ltd Improvements in or relating to fluid heaters
GB1479837A (en) * 1976-02-09 1977-07-13 Carey F Heat exchanger and heating installations incorporating such an exchanger
GB1503899A (en) * 1976-12-15 1978-03-15 U Fab Ltd Baffle for heat exchanger tube
BE872939A (nl) * 1978-12-21 1979-04-17 Rogiers Andre Centrale haardverwarmingsketel
US4157706A (en) * 1978-04-28 1979-06-12 Gaskill Emanuel P Water heater
DE2820577A1 (de) * 1978-05-11 1979-11-15 Rudolf G Hausmann Verfahren zur waermerueckgewinnung aus abgaswaerme von heizungsanlagen mittels waermetauscher als rauchrohr und automatischer abgasklappe
FR2445935A1 (fr) * 1979-01-02 1980-08-01 Serieys Georges Recuperateur de chaleur
EP0023317A1 (de) * 1979-07-23 1981-02-04 Helmut Fuchs Einrichtung zur Wärmerückgewinnung aus Abgas sowie Wärmetauschelement hierfür
US4256170A (en) * 1979-07-20 1981-03-17 Crump Robert F Heat exchanger
DE3000867A1 (de) * 1980-01-11 1981-07-16 Fa. Viktor Franken, 5112 Baesweiler Aufbereitungsanlage fuer abfallenergie von heizanlagen

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2070804A (en) * 1935-04-06 1937-02-16 Payson Rudolph Heating apparatus
FR1095966A (fr) * 1953-02-14 1955-06-08 Conduit tubulaire pour échangeurs de chaleur
GB818730A (en) * 1957-02-01 1959-08-19 A E Greaves And Son Ltd Improvements relating to heat-exchangers
FR1409030A (fr) * 1963-09-16 1965-08-20 Patterson Kelly Co Canal d'échange de chaleur
DE1501588A1 (de) * 1964-11-25 1969-10-30 Olin Mathieson Waermeaustauscher und Verfahren zu seiner Herstellung
GB1291572A (en) * 1969-04-02 1972-10-04 Curwen & Newberry Ltd Improvements in or relating to fluid heaters
GB1479837A (en) * 1976-02-09 1977-07-13 Carey F Heat exchanger and heating installations incorporating such an exchanger
GB1503899A (en) * 1976-12-15 1978-03-15 U Fab Ltd Baffle for heat exchanger tube
US4157706A (en) * 1978-04-28 1979-06-12 Gaskill Emanuel P Water heater
DE2820577A1 (de) * 1978-05-11 1979-11-15 Rudolf G Hausmann Verfahren zur waermerueckgewinnung aus abgaswaerme von heizungsanlagen mittels waermetauscher als rauchrohr und automatischer abgasklappe
BE872939A (nl) * 1978-12-21 1979-04-17 Rogiers Andre Centrale haardverwarmingsketel
FR2445935A1 (fr) * 1979-01-02 1980-08-01 Serieys Georges Recuperateur de chaleur
US4256170A (en) * 1979-07-20 1981-03-17 Crump Robert F Heat exchanger
EP0023317A1 (de) * 1979-07-23 1981-02-04 Helmut Fuchs Einrichtung zur Wärmerückgewinnung aus Abgas sowie Wärmetauschelement hierfür
DE3000867A1 (de) * 1980-01-11 1981-07-16 Fa. Viktor Franken, 5112 Baesweiler Aufbereitungsanlage fuer abfallenergie von heizanlagen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2926102A1 (es) * 2021-04-13 2022-10-21 Kalfrisa S A Recuperador de calor y metodo de recuperacion de calor asociado al mismo

Also Published As

Publication number Publication date
DE3169715D1 (en) 1985-05-09
FR2492962B1 (de) 1985-01-04
EP0051036B1 (de) 1985-04-03
ATE12542T1 (de) 1985-04-15
FR2492962A1 (fr) 1982-04-30

Similar Documents

Publication Publication Date Title
CA2786897C (fr) Dispositif de production de fluides chauds comprenant un echangeur de chaleur a condensation
EP3405723B1 (de) Kondensationswärmetauscher mit einer wärmetauschervorrichtung
WO2004016995A1 (fr) Echangeur de chaleur a condensation a double faisceau de tubes
FR2527317A1 (fr) Chaudiere a gaz ou a combustible liquide pour la production d'eau chaude ou de vapeur
LU82393A1 (fr) Echangeur de chaleur a enceinte en spirale
EP0051036B1 (de) Oberflächenwärmetauscher zur Wärmerückgewinnung
EP0171340A1 (de) Kondensationsheisswassererzeuger
CA2012714A1 (fr) Procede et appareil de chauffage d'un flux de fluide gazeux par echanges thermiques successifs
FR2490331A1 (fr) Installation de production d'energie mettant en oeuvre un fluide auxiliaire, notamment utilisant le rayonnement solaire
EP0102911A2 (de) Einrichtung und Verfahren zur Wärmerekuperation für einen Feuerraum
FR2512525A1 (fr) Appareil de rechauffage d'un liquide a serpentin
EP0062573B1 (de) Erhitzer für festen Brennstoff
FR2459438A1 (fr) Echangeur de chaleur pour installations de chauffage a eau chaude
FR2664784A1 (fr) Rechauffeur de fluide utilisant des tubes chauffes par effet joule qui transmettent leur energie simultanement par leurs faces interne et externe.
FR2535837A1 (fr) Echangeur de chaleur pour sortie de fumee de fours industriels, en particulier de fours d'incineration de dechets
FR2510245A1 (fr) Echangeurs de chaleur a surfaces d'echange plissee et systemes de prelevement des calories evacuees par les fumees sortant des chambres de combustion
FR2640028A2 (fr) Chaudiere a condensation pour chauffage a fluide caloporteur
EP0395535B1 (de) Klimagerät zum Heizen oder Kühlen eines Raumes
FR2714151A1 (fr) Dispositif d'accrochage de flammes et d'échange de chaleur, brûleur et chauffe-fluide ainsi équipés .
LU82469A1 (fr) Echangeur de chaleur a deux fluides,dont un gazeux,notamment pour chaudiere a condensation
FR2540226A1 (fr) Perfectionnement aux recuperateurs de calories a circulation de liquide a incorporer dans un foyer
BE382428A (de)
FR2629907A1 (fr) Perfectionnements aux echangeurs thermiques
FR2462684A1 (fr) Echangeur de chaleur a paroi developpable et a deux fluides circulant a contre-courant
EP0443931A1 (de) Wärmerekuperator für Kaminöfen

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

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

17P Request for examination filed

Effective date: 19821105

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

Owner name: GRUE, CHRISTIAN

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 FR GB IT LI LU NL SE

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

Ref country code: NL

Effective date: 19850403

Ref country code: AT

Effective date: 19850403

REF Corresponds to:

Ref document number: 12542

Country of ref document: AT

Date of ref document: 19850415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3169715

Country of ref document: DE

Date of ref document: 19850509

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19851021

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

Ref country code: LU

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

Effective date: 19851031

Ref country code: LI

Effective date: 19851031

Ref country code: CH

Effective date: 19851031

Ref country code: BE

Effective date: 19851031

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
BERE Be: lapsed

Owner name: GRUE CHRISTIAN

Effective date: 19851031

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

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

Effective date: 19860630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19860701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: GB

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 81440023.0

Effective date: 19860730