EP0770845A2 - Tube d'échangeur de chaleur avec éléments turbulateurs générateurs de tourbillons - Google Patents

Tube d'échangeur de chaleur avec éléments turbulateurs générateurs de tourbillons Download PDF

Info

Publication number
EP0770845A2
EP0770845A2 EP96115774A EP96115774A EP0770845A2 EP 0770845 A2 EP0770845 A2 EP 0770845A2 EP 96115774 A EP96115774 A EP 96115774A EP 96115774 A EP96115774 A EP 96115774A EP 0770845 A2 EP0770845 A2 EP 0770845A2
Authority
EP
European Patent Office
Prior art keywords
tube
strand
tubes
pipes
heat exchanger
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
EP96115774A
Other languages
German (de)
English (en)
Other versions
EP0770845B1 (fr
EP0770845A3 (fr
Inventor
Joachim Dipl.-Ing. Hederich
Jürgen Dr.-Ing. Künzel
Manfred Dipl.-Ing. Nedoschill
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.)
SGL Carbon SE
Original Assignee
SGL Technik GmbH
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 SGL Technik GmbH filed Critical SGL Technik GmbH
Publication of EP0770845A2 publication Critical patent/EP0770845A2/fr
Publication of EP0770845A3 publication Critical patent/EP0770845A3/fr
Application granted granted Critical
Publication of EP0770845B1 publication Critical patent/EP0770845B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Definitions

  • the invention relates to a tube for tube bundles of heat exchangers with elements located inside the tube and generating turbulence in the flow in the tube.
  • DE-OS 35 21 914 discloses arranging webs in the individual tube which do not completely penetrate the tube and are shaped in a wave shape. Such a shape is only conceivable in the extrusion process for light metal, in particular aluminum, where it is possible to produce such corrugated webs by suitable design of the recipient.
  • the invention has for its object to design tubes for use in the tube bundles of tube bundle heat exchangers in such a way that they have vortex-generating elements and / or flow rate-increasing elements which disturb the fluid flow, without the ductility of the tube material being important.
  • the invention is intended to provide access to pipes made of materials which are difficult to deform, in particular pipes made of graphite, which have improved heat transfer performance.
  • the inner wall of the tube is free from elevations and depressions influencing the fluid flow in the tube and in the interior of the tube there is a tubular or rod-shaped strand, the outer surface of which is in the form a) a thread lying essentially transversely to the direction of flow in the tube or b) has shafts arranged in the same way or c) is studded or studded so that the strand, with the exception of a linear contact with the inner surface of the heat exchanger tube at a distance of this inner surface is positioned so that there is a space between the strand and the inner surface of the heat exchanger tube for the fluid to flow through the heat exchanger tube.
  • This claim is characterized in that the inner wall of the tubes is free from elevations and depressions influencing the fluid flow in the tubes, that there is a tubular or rod-shaped strand in the interior of the tubes, the outer surface of which is in the shape a) of a substantially transverse to Flow direction in the thread lying in the tubes or b) has shafts arranged in the same way or c) is studded or spiked so that the strand is positioned apart from these inner surfaces with the exception of at most linear contact with the inner surfaces of the heat exchanger tubes, so that between the strand and the inner surface of the heat exchanger tubes there is a space for the fluid to flow through the heat exchanger tubes, that the strand has a U-shape, that the legs of the U of the strand are located in two adjacent tubes of a heat exchanger, and the connecting the thighs e bend of the U is arranged outside the tubes.
  • the invention now makes it possible to advance into the field of the use of such pipes which are difficult to manufacture and which are practically unusable by using larger, mechanically more stable pipes which can be produced at a reasonable cost and which are thus modified by using strands according to the invention that they fully correspond to the technical scope of the smaller pipes.
  • the invention is applicable to all types of tubes for heat exchangers which allow the introduction of strands according to the invention.
  • the invention is of particular importance for those heat exchangers through which liquid, gaseous or vapor-like materials have to be passed, which presuppose chemically resistant material for the pipes.
  • Tubes made of special, difficult-to-process metallic materials such as titanium, titanium-palladium alloys, high-alloy steels or nickel-based alloys or of ceramic such as silicon carbide and in particular of graphite are suitable for such heat exchangers.
  • a special feature of these materials and here especially of graphite is that they cannot be provided with vortex-generating current disturbance elements in the extrusion manufacturing process. Rather, pipes made of these materials are essentially smooth pipes on the inside. If the strands according to the invention, which have profiles of the outer circumference, are used in such pipes, the advantage of the resistant material becomes with the improvement of the heat transfer performance combined.
  • the profiles with which the strands inserted into the pipes are provided can take a variety of forms. They only have to cause laminar flows to be converted into turbulent and slightly turbulent flows into more turbulent flows.
  • the following surface configurations of the strands are given as examples: various thread-like shapes, ribs, knobs, spikes and, as a preferred shape, waves.
  • the strands can be hollow on the inside or made of solid material. If hollow strands are used, they are preferably closed on at least one side in order to prevent the formation of a second flow line in the tube and to avoid the accumulation or retention of fluid from the heat exchanger in the strand. Where this makes sense, both ends of the hollow strand can also be closed. However, if this has advantages, it is also possible to leave the ends open. Commercially available, relatively inexpensive corrugated pipes are preferably used as hollow strands.
  • the hollow strands can either be partially or completely filled with a suitable material.
  • the part of the strand pointing downward in the heat exchanger may contain only a filling that weighs down, in order to tighten the hanging strand and to prevent excessive back and forth movements, or the interior of the strand is completely foamed with a specifically light material around the strand to give good longitudinal stability with overall low weight.
  • a particularly preferred solution to the problem consists of U-shaped strands, for example in a U-shape to use curved corrugated pipes.
  • the legs of such a U-shaped strand are inserted into two adjacent tubes of the heat exchanger and the part connecting the legs naturally remains outside the exchanger tubes.
  • the ends can also not be closed if the U-shaped strands are arranged in such a way that their openings point in the direction of gravity, so that any process medium that has entered the interior of the strands can flow out again.
  • a heat exchanger can be equipped with the strands according to the invention with the simplest of means and with little effort.
  • the strands are fastened in the heat exchanger tubes using simple means known per se, such as suspensions or webs attached to the tube ends or pins guided through the strand ends, which are supported on the tube ends.
  • the heat exchanger tubes or the flow channels aligned with the tube ends of these tubes in the upper and lower tube plates of the tube bundle, in which these pipes are installed have conical or wedge-shaped extensions at the inflow end. This measure is particularly recommended when using U-shaped strands on the side of the U-shaped connection of the legs. But it is not a condition. Where this seems advantageous, such extensions can also be fitted on the outflow side of the tube bundle.
  • the material from which the strands according to the invention are made depends on the conditions of use, especially on the medium to which the strands are exposed and on the intended operating temperature.
  • the specialist selects the most suitable material based on his knowledge. Some, without limitation, some of the materials in question are mentioned as examples: metal, plastic, rubber, wood, ceramic, carbon.
  • plastics polypropylene (PP) or polyvinyl chloride (PVC) are preferably used for media that are less aggressive.
  • strands of fluorine-containing polymers such as polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), tetrafluoroethylene-perfluoropropylene copolymer (FEP) or copolymers of tetrafluoroethylene with perfluoroalkyl vinyl ether (PFA) are preferably used.
  • PTFE polytetrafluoroethylene
  • PVDF polyvinylidene fluoride
  • FEP tetrafluoroethylene-perfluoropropylene copolymer
  • PFA perfluoroalkyl vinyl ether
  • the range of carbon materials is not limited to non-graphitic and graphitized carbon. Parts made from carbon fiber reinforced carbon or from plastic reinforced with carbon fibers can also be used.
  • the outer diameter of the strand is preferably one third to eight tenths of the inner diameter of the heat exchanger tube surrounding it. These proportions have proven themselves in heat exchangers for aggressive chemical media in which the exchanger tubes are made of graphite and the strands are made of plastic. However, the invention is not limited to these dimensions. You can deviate from this if necessary.
  • the strand For cases in which the strand must be arranged in a stable position within the tube, it is recommended that Support the strand in places on the smooth inner wall of the pipe. In general, this can be achieved in that the strand is supported on the inner wall of the exchanger tube using known means, such as webs. When choosing and arranging the support elements, care should only be taken that the flow in the annular gap is not significantly impaired. According to a preferred procedure, support is achieved when the strand passes through the tube in a spiral shape.
  • This spiral shape is created with flexible material by twisting the strand, which is designed as a corrugated tube, for example, when inserted into the tube, or locking it after insertion at the opposite end of the tube or tube plate, then twisting it, compressing it a little, and twisting it then also at the other end of the tube or tube sheet. In this way, the strand is supported on the inner surface of the tube.
  • a tube 1 of the tube bundle of a tube bundle heat exchanger is shown, the parts of which in contact with the product, with the exception of the strand inserted into the tubes 1, consist of tantalum.
  • the surface of the smooth tantalum tube 1 is welded into the upper tube sheet 2 and the lower tube sheet 3 of the tube bundle, which are only hinted at.
  • the strand body 4 is in the form of a tube made of FEP, which is closed at its upper end 5 by squeezing and / or welding, and is provided on its outer surface with a thread-like profile 6.
  • the strand body 4 is open at its lower end 9.
  • the strand body 4, which causes the turbulence and reduces the fluid-accessible inner cross section 7 of the heat exchanger tube 1, is attached to both the upper tube sheet 2 and the lower tube sheet 3 of the tube bundle by means of a pin 8, 8 'guided through the strand 4, which is located on the upper 2 and supports the lower tube sheet 3, held.
  • FIG. 1 a which shows a view of the upper part of FIG. 1 rotated by 90 °, makes it clear that the locking of the strand 4 is effected by a pin 8.
  • the fluid passing through the heat exchanger flows, as the arrows in FIGS. 1 and 1a indicate, from bottom to top through the heat exchanger.
  • the largest outside diameter a of the strand is 4 1/3 to 8/10 of the inside diameter b of the heat exchanger tube 1.
  • FIG. 2 shows a variant of the invention in which the legs 10, 10 'of a U-shaped corrugated tube 11 are located in adjacent tubes 1, 1' of a heat exchanger.
  • the threaded tubes forming the extruded bodies 4 consist of polypropylene.
  • the product flow runs from top to bottom through the pipes 1, 1 '.
  • the strands 4 are always closed in this arrangement in the heat exchanger tubes 1, 1 'on their upper, the inflow side 15, 15' in the exchanger tubes 1, 1 '. No product can enter them. At its lower end, which is not visible here, the strands 4 can either be open or closed. You can also e.g. be fixed to the lower tube plate or not. It is not difficult to see that the U-shaped embodiment also offers considerable advantages during assembly.
  • Fig. 4 the upper 2 and the lower tube sheet 3 of a tube bundle are indicated, in which (2, 3) an exchanger tube 1 is glued (16).
  • the tubular strand body 4, closed at its upper 5 and lower 9 end, consists of a rubber-like copolymer of vinylidene fluoride with hexafluoropropylene, which is commercially available under the R Viton brand. Its surface has a plurality of knobs 13 in order to cause the desired turbulence in the flow in the tube 1.
  • the strand body 4 is suspended at its upper end 5 by a welded-in PTFE pin 8 penetrating it at the top of the upper tube sheet 2 of the tube bundle.
  • the strand body 4 contains a specifically heavy mass 17, for example silicon dioxide bonded with a synthetic resin, heavy spar or chips of a corrosion-resistant alloy, in order to tighten it and to secure it against undesired and uncontrollable movements in the flow.
  • the interior of the strand 4 could also be foamed with a plastic 19 in addition or while omitting the weighting filling in order to give the strand longitudinal rigidity.
  • Fig. 5 shows a section of a heat exchanger tube 1, which contains a hollow strand 4 in the form of a corrugated tube, on the surface of which elevations 12 and depressions 12 'are arranged, which run concentrically around the longitudinal axis of the tube.
  • FIGS. 6a, 6b and 6c show in connection with FIGS. 6a, 6b and 6c a possibility of a strand 4 made of a sufficiently flexible material in the heat exchanger tube surrounding it 1 keep stable.
  • the support is achieved here in that the strand 4 is rotated about its longitudinal axis after being inserted into the exchanger tube 1 and, if necessary, after the strand 4 has been fixed at the lower end of the tube 1, with slight compression, in such a way that it has the shape of a helix assumes and rests along a helical line of contact on the inner wall 18 of the exchanger tube 1 and is thus supported against movements possibly caused by the flow.
  • the strand 4 twisted in this way must be secured at its (not shown) upper and lower ends in the exchanger tube 1 or on the upper and lower tube sheets of the tube bundle, which are also not shown, against turning back.

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)
EP96115774A 1995-10-26 1996-10-02 Tube d'échangeur de chaleur avec éléments turbulateurs générateurs de tourbillons Expired - Lifetime EP0770845B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29516927U 1995-10-26
DE29516927U DE29516927U1 (de) 1995-10-26 1995-10-26 Rohr für Wärmeaustauscher mit wirbelerzeugenden Stromstörungselementen

Publications (3)

Publication Number Publication Date
EP0770845A2 true EP0770845A2 (fr) 1997-05-02
EP0770845A3 EP0770845A3 (fr) 1998-12-02
EP0770845B1 EP0770845B1 (fr) 2003-08-27

Family

ID=8014600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115774A Expired - Lifetime EP0770845B1 (fr) 1995-10-26 1996-10-02 Tube d'échangeur de chaleur avec éléments turbulateurs générateurs de tourbillons

Country Status (2)

Country Link
EP (1) EP0770845B1 (fr)
DE (2) DE29516927U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011100692A1 (de) * 2011-05-06 2012-11-08 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Flexibel anpassbarer Wärmetauscher für eine Kraftfahrzeug-Klimaanlage
EP1852668A3 (fr) * 2006-05-02 2013-01-23 Samsung Electronics Co., Ltd. Échangeur thermique pour réfrigérateur
US9279621B2 (en) 2010-08-12 2016-03-08 GM Global Technology Operations LLC Internal heat exchanger for a motor vehicle air-conditioning system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19721657A1 (de) * 1997-05-23 1998-12-10 Nova Solar Gmbh Wärmetauscher
US7806171B2 (en) * 2004-11-12 2010-10-05 Carrier Corporation Parallel flow evaporator with spiral inlet manifold
EP4105588A1 (fr) 2021-06-15 2022-12-21 Materials Center Leoben Forschung GmbH Dissipateur thermique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521914A1 (de) 1984-06-20 1986-01-02 Showa Aluminum Corp., Sakai, Osaka Waermetauscher in fluegelplattenbauweise

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549687A (en) * 1947-11-21 1951-04-17 Duriron Co Heat exchanger
DE1100855B (de) * 1953-04-24 1961-03-02 Andre Vandevelde Vorrichtung zum Waermeaustausch zwischen einem Rauchgasstrom und einer zu erhitzenden Fluessigkeit
CA943360A (en) * 1970-09-11 1974-03-12 Borg-Warner Corporation Vertical surface vapor condensers
DE8013351U1 (fr) * 1979-05-25 1980-08-21 S.A. Francaise Du Ferodo, Paris
HU179455B (en) * 1979-07-16 1982-10-28 Energiagazdalkodasi Intezet Ribbed device improving the heat transfer composed from sheet strips
DE8030578U1 (de) * 1980-11-15 1984-08-02 Küppersbusch AG, 4650 Gelsenkirchen Wärmeübertrager
JPS5827689U (ja) * 1981-08-19 1983-02-22 株式会社ミハマ製作所 合成樹脂製乱流子
US4784218A (en) * 1982-11-01 1988-11-15 Holl Richard A Fluid handling apparatus
AU574339B2 (en) * 1982-11-01 1988-07-07 Vapor Corp. Device interupting boundary layer in heat exchanger tubes
CA1220314A (fr) * 1983-10-21 1987-04-14 George Bloomfield Vrillage d'un ruban plastique
DE3443085A1 (de) * 1983-12-07 1985-06-13 Kühner GmbH & Cie, 7155 Oppenweiler Doppelrohr-waermetauscher
US4559998A (en) * 1984-06-11 1985-12-24 The Air Preheater Company, Inc. Recuperative heat exchanger having radiation absorbing turbulator
US4709756A (en) * 1984-11-13 1987-12-01 Westinghouse Electric Corp. Steam generator tube support
CA1241636A (fr) * 1985-04-15 1988-09-06 Philip G. Lesage Element de radiateur
JPS6266099A (ja) * 1985-08-30 1987-03-25 Kimura Kakoki Kk 黒鉛製伝熱管
US4872503A (en) * 1986-03-13 1989-10-10 Marriner Raymond E Air heat exchanger
DE3813040C1 (en) * 1988-04-19 1989-08-03 Wieland-Werke Ag, 7900 Ulm, De Use of a finned tube as reaction tube for exothermic chemical reactions
GB2228563A (en) * 1989-02-28 1990-08-29 Michael John Nunnerley Heat exchange system
EP0571656B1 (fr) * 1992-05-23 1995-08-02 Peter Neurauter Echangeur de chaleur avec un écoulement guidé
WO1994027106A1 (fr) * 1993-05-07 1994-11-24 Envirecon Services Limited Appareil d'evaluation de depot sur un conduit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521914A1 (de) 1984-06-20 1986-01-02 Showa Aluminum Corp., Sakai, Osaka Waermetauscher in fluegelplattenbauweise

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1852668A3 (fr) * 2006-05-02 2013-01-23 Samsung Electronics Co., Ltd. Échangeur thermique pour réfrigérateur
US9279621B2 (en) 2010-08-12 2016-03-08 GM Global Technology Operations LLC Internal heat exchanger for a motor vehicle air-conditioning system
DE102011100692A1 (de) * 2011-05-06 2012-11-08 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Flexibel anpassbarer Wärmetauscher für eine Kraftfahrzeug-Klimaanlage

Also Published As

Publication number Publication date
DE29516927U1 (de) 1996-02-01
DE59610685D1 (de) 2003-10-02
EP0770845B1 (fr) 2003-08-27
EP0770845A3 (fr) 1998-12-02

Similar Documents

Publication Publication Date Title
EP0278961B1 (fr) Echangeur de chaleur a contre-courant a faisceau helicoidal de tubes
DE2728971C3 (de) Einsatz für ein Wärmetauscherrohr
DE2236954A1 (de) Waermetauscher
EP0996498A1 (fr) Melangeur continu a convection chaotique, echangeur thermique et reacteur
EP3408013A1 (fr) Mélangeur-échangeur de chaleur en feuille de trèfle
EP0542805A1 (fr) Corps en nid d'abeilles ayant des canaux a sections transversales diverses, notamment corps de support de catalyseur.
DE69627511T2 (de) Wärmetauscher aus polymerenbändern
DE202009009910U1 (de) Wärmetauscher mit Strömungsumlenker
DE2950563A1 (de) Waermetauscher und verfahren zur herstellung desselben
CH620760A5 (fr)
EP0770845B1 (fr) Tube d'échangeur de chaleur avec éléments turbulateurs générateurs de tourbillons
DE4343405A1 (de) Rohr, insbesondere zur Verwendung als Wärmetauschrohr für Rohrbündelwärmeübertrager
EP0819892B1 (fr) Echangeur de chaleur pour la production d'eau sanitaire
DE4217923C2 (de) Vorrichtung zur Distanzierung von Wärmetauscherrohren
DE2428042B2 (de) Roehrenwaermeaustauscher
DE3401853A1 (de) Waermetauscher und verfahren zu seiner herstellung
DE2749205A1 (de) Roehrenwaermetauscher
DE102008030423B4 (de) Rohr mit einer durch Noppen Oberflächenprofil-modifizierten Außenmantelfläche
DE2753189A1 (de) Oberflaechenausbildung in einer vorrichtung zum fuehren von fluiden
DE4015830C2 (de) Wärmetauscher, insbesondere Wasser/Luft-Kühler
DE3320956A1 (de) Rohrfoermiger waermetauscher zur rueckgewinnung von waermeenergie aus abgasen
DE102010006371B4 (de) Wärmetauscher
CH646511A5 (de) Waermeuebertragungsrohr und verfahren zu dessen herstellung.
EP1209434B1 (fr) Echangeur de chaleur pour échange de chaleur indirecte
CH636188A5 (en) Spacer grid, consisting of a multiplicity of individual elements, on tubes or rods

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): DE FR IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR IT NL

17P Request for examination filed

Effective date: 19990521

17Q First examination report despatched

Effective date: 20010123

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

Owner name: SGL ACOTEC GMBH

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR IT NL

REF Corresponds to:

Ref document number: 59610685

Country of ref document: DE

Date of ref document: 20031002

Kind code of ref document: P

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

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

26N No opposition filed

Effective date: 20040528

REG Reference to a national code

Ref country code: FR

Ref legal event code: RN

REG Reference to a national code

Ref country code: FR

Ref legal event code: FC

NLS Nl: assignments of ep-patents

Owner name: SGL CARBON AKTIENGESELLSCHAFT

Effective date: 20050824

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: FR

Payment date: 20121031

Year of fee payment: 17

Ref country code: DE

Payment date: 20121023

Year of fee payment: 17

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

Ref country code: IT

Payment date: 20121026

Year of fee payment: 17

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

Ref country code: NL

Payment date: 20121019

Year of fee payment: 17

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140630

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59610685

Country of ref document: DE

Effective date: 20140501

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 NON-PAYMENT OF DUE FEES

Effective date: 20131002

Ref country code: NL

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

Effective date: 20140501

Ref country code: FR

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

Effective date: 20131031

Ref country code: DE

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

Effective date: 20140501