WO2002027255A1 - Echangeur thermique a contre-courant - Google Patents

Echangeur thermique a contre-courant Download PDF

Info

Publication number
WO2002027255A1
WO2002027255A1 PCT/EP2001/007741 EP0107741W WO0227255A1 WO 2002027255 A1 WO2002027255 A1 WO 2002027255A1 EP 0107741 W EP0107741 W EP 0107741W WO 0227255 A1 WO0227255 A1 WO 0227255A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
sections
housing
exchanger
tubes
Prior art date
Application number
PCT/EP2001/007741
Other languages
German (de)
English (en)
Inventor
Markus Bittcher
André Bottländer
Dieter Wegmann
Original Assignee
Siegenia-Frank Kg
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 Siegenia-Frank Kg filed Critical Siegenia-Frank Kg
Priority to AU2001272524A priority Critical patent/AU2001272524A1/en
Priority to EP01951654A priority patent/EP1320713A1/fr
Publication of WO2002027255A1 publication Critical patent/WO2002027255A1/fr

Links

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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • 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
    • F28D7/16—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 in parallel spaced relation
    • F28D7/163—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 in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—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 in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the invention relates to a heat exchanger of the type specified in the preamble of claim 1.
  • the counterflow heat exchanger has a number of heat exchanger elements which are stacked one above the other while maintaining predetermined distances from one another.
  • Each heat exchanger element has a number of elongated, parallel heat exchanger tubes, that is to say a tube bundle, at each end of which a collector is arranged.
  • the collectors each have an inclined open end surface and a symmetrically arranged, inclined closed end surface.
  • the first fluid is distributed such that it flows uniformly through the interior of the heat exchanger tubes, while the second fluid flows evenly through the spaces between the heat exchanger elements and around the heat exchanger tubes.
  • the first and second fluids flow in counterflow through the heat exchanger element and exit to the right and left at the open end faces of the collectors. If a number of such elements are now stacked one above the other, the spaces between the closed sides form openings for the entry of a second fluid, which then flows around the tubes of the tube bundle and exits through corresponding spaces between the closed sides.
  • a continuous heat exchanger for gaseous fluids is known, which is in countercurrent Exchange areas is performed, especially for room ventilation systems with an exhaust air and a supply air duct.
  • the channel carrying the low temperature fluid and the channel carrying the higher temperature fluid opens in opposite directions into a register of cells which have exchange surfaces which serve as common partition walls, the entrances and exits of the channels into the cells on one side each transverse to the exchange surfaces running center plane of the register and each second cell is blocked by an end wall against the inflow of fluid from one channel and open to the inflow from the other channel.
  • the entrances and exits of the channels each run obliquely to the median plane mentioned in order to enlarge the passage cross sections.
  • the present invention has for its object to provide a countercurrent heat exchanger of the type mentioned, which manages with a low flow resistance and has a high degree of heat recovery.
  • a countercurrent heat exchanger has elongated, hollow exchanger tubes which are open at their respective ends and enclosed by a housing, the housing having an inlet opening at the respective ends of the housing and on a side face of the housing in the vicinity of the respective End has an outlet opening.
  • One fluid enters the front of the heat exchanger, flows through the exchanger tubes in this chamber and then flows around exchanger tubes located in the next chamber.
  • there is an interplay of the fluid by flowing through and flowing around.
  • the fluid then leaves the heat exchanger through an outlet opening, as already described.
  • the other fluid follows the same path, only in the opposite direction. Because of the interplay, a direct collision of the fluids is avoided, so that there is no backflow of the flow and so the heat exchange capacity can be fully used. As a result, this heat exchanger has a low pressure drop and a high degree of heat recovery.
  • the warm, moist fluid flows around the cold flowing fluid.
  • the moisture condenses on the outside of the tubes and does not hinder the air flowing past to the same extent as it would in the exchanger tubes - the tubes are sealed by water drops - as falling drops collect on the floor of the chamber and are directed away from there can. In this way, the condensate can be systematically precipitated in a chamber.
  • the exchanger tubes have a small wall thickness.
  • good dimensional stability is achieved, and on the other hand the thinner the exchanger tubes are designed, the greater the volume flow of the fluids flowing through or around them.
  • the exchanger tubes preferably consist of a thin-walled plastic. However, other materials can also be used.
  • the outlet opening is arranged in the vicinity of the end walls. Since the outlet opening is arranged on the sides of the housing, the side surfaces or the side dimensions can be of different sizes from one another as required, so that for all
  • Variants of a ventilation device that uses heat exchangers Not only the side surfaces, but also the length of the heat exchanger can be manufactured in different dimensions. Depending on the installation condition, the outlet openings of the two fluids can be arranged on different side surfaces with possibly different sizes.
  • the heat exchanger consists of at least two sections, each section has at least one exchanger tube which are arranged offset to one another.
  • the recurring change of the staggered arrangement of the exchanger tubes in the lined-up sections enables the interplay between flow around and flow through the fluids guided according to the counterflow principle.
  • the heat exchanger consists of at least two sections, a spatial separation of the sections being characterized by staggered exchanger tubes.
  • a strict separation of the sections ensures that the flow direction is maintained, on the other hand, production is easier and thus the costs of the entire heat exchanger are greatly reduced.
  • the sections are separated by individual partition walls, the material of which can be freely selected to suit the installation conditions.
  • a partial section forms a structural unit consisting of at least one exchanger tube which is enclosed by a housing, the housing carrying fastening means which enable several structural units to be linked to form a structural unit.
  • the Sections are arranged the same size and can therefore also be easily adapted to any installation condition. Furthermore, the manufacturing costs are reduced due to the fact that the material is of the same size for each section.
  • Fig. 1 is a schematic front view of the heat exchanger in a
  • Fig. 2 is a front view of the heat exchanger with another
  • Fig. 3 is a schematic front view of the heat exchanger in a further embodiment.
  • Fig. 1 shows a heat exchanger 1, for example a ventilation device of a building, consisting of a housing 2, which has a series of holes on the end walls 3 and 4, which serve as an inlet opening for the warm, moist fluid W, e.g. from the interior and the cold fluid K, e.g. are provided from the outside of the building.
  • a heat exchanger 1 for example a ventilation device of a building, consisting of a housing 2, which has a series of holes on the end walls 3 and 4, which serve as an inlet opening for the warm, moist fluid W, e.g. from the interior and the cold fluid K, e.g. are provided from the outside of the building.
  • W warm, moist fluid
  • K cold fluid
  • Housing 2 can be part of the ventilation device, but can also be provided as part of the heat exchanger 1.
  • a partition 7 is also visible in the vicinity of the central axis of the heat exchanger 1 and has a number of bores which corresponds to the sum of the bores in the end wall 3 and the end wall 4. It can be seen that the bores of the end wall 3 and the end wall 4 are each offset from one another.
  • the partition 7 divides the housing 2 or the heat exchanger 1 into two sections 8 and 9, in which exchanger tubes 10 are systematically arranged, the number of which corresponds to the number of holes in the partition 7 and the number of end walls 3 and 4.
  • the exchanger tubes 10 are fastened in the end walls 3 and 4 and are held at a distance from one another by the partition wall 7.
  • the warm fluid W first flows through the exchanger tubes 10 of the section 9, then flows around the
  • heat exchanger 1 has no influence on the efficiency as long as the number of exchanger tubes 10 in total, their effective length and distance between them remain.
  • the design in which the warm, e.g. Fluid originating from an interior of the room into a section of the
  • Heat exchanger 1 first flows around the cold fluid coming from outside. Possibly. Moisture contained in the warm fluid coming from the interior of the room is thereby targeted to the outside of the exchanger tubes 10 brought to failure. The associated higher friction leads to a pressure loss, which, however, turns out to be less than if the moisture inside the exchanger tube 10 fails. Condensate that accumulates can also be removed more easily outside of the immersion tubes 10.
  • FIG. 2 shows another embodiment of the heat exchanger 1 described in a front view, the front side surface being broken open to make the arrangement of the exchanger tubes 10 visible.
  • the flow of the fluid is unchanged as described in Fig. 1 according to the countercurrent principle.
  • the fluid W and K changes in sections from 8 to 9 and from 9 to 8 from flowing through to flowing around.
  • a change to FIG. 1 can be seen in the area of the partition 8, the partition 13 being designed thinner and the exchanger tubes 10 projecting into the sections 8 and 9. It is advantageous here that the transition from flowing through to flowing around is not dependent on the position of the partition 13, but can also be spaced apart from it in order to rule out a direct collision of the fluid.
  • the load that acts on the partition 13 is distributed by receiving the exchanger tubes 13 and by the acting flow forces of the fluid due to the displacement of the exchanger tubes 10 from the area of the partition 13.
  • the exchanger tubes 10 are only in the end walls 3 for this purpose , 4 attached and received in the partition 13 longitudinally.
  • the heat exchanger 1 can thereby be telescopically pushed together, the housing 2 of course having to be adapted.
  • Fig. 3 shows a schematic front view of the heat exchanger 1 in a further embodiment, which is formed from a plurality of units 14, 15, 16, each unit 14, 15, 16 having its own housing 17, 18, 19, which advantageously with the same number of
  • Exchanger tubes 10 are equipped and have fastening means 20 which form the connection of the structural unit 14, 15, 16 and, depending on the installation conditions a link or a chain of such units can be attached without great effort depending on the size and need of the heat exchanger.
  • the exchanger tubes 10 are not received in bores in a partition 7, 13, but rather are supported on one another.
  • the exchanger tubes can e.g. be arranged like a honeycomb and have a hexagonal cross section, which at least in the central region adjusts itself dimensionally to the installation conditions.
  • the outlet openings 5, 6 are each selected for the fluid K, W, which flows around the exchanger tubes 10 in the section 8 or 9 in which the outlet openings 5, 6 are provided.
  • This requires an even number of sections 8, 9, but enables the outlet opening 5, 6 to be arranged at any point within the section 8, 9.
  • the fluid contained in the exchanger tubes 10, on the other hand, can only be removed or removed from the end faces 3 or 4. be initiated.
  • it is advantageous for the efficiency of the heat exchanger 1 if the outlet openings 5, 6 are as close as possible to the end walls 3, 4 in order to maximize the usable length of the exchanger tubes 10.
  • the outlet openings 5, 6 are provided in a side wall of the housing 2, in mutually opposite side walls or even in adjacent side walls which run at right angles to one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur thermique (1) destiné à être employé dans un dispositif de ventilation de manière à réaliser l'échange thermique entre deux fluides gazeux circulant selon le principe du contre-courant. Dans le sens longitudinal, ledit échangeur thermique (1) présente des tubes d'échange creux (10) ouverts sur leurs extrémités respectives et contenus dans un boîtier (2). Ledit boîtier comporte une ouverture d'entrée (11, 12) sur les extrémités côté tube, et respectivement une ouverture de sortie (5, 6) sur une surface latérale du boîtier (2) à proximité des extrémités respectives. Lesdits tubes d'échange (10) sont divisés en sections partielles (8, 9), et alternativement contournés et parcourus par les deux fluides gazeux.
PCT/EP2001/007741 2000-09-26 2001-07-06 Echangeur thermique a contre-courant WO2002027255A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001272524A AU2001272524A1 (en) 2000-09-26 2001-07-06 Counter current heat exchanger
EP01951654A EP1320713A1 (fr) 2000-09-26 2001-07-06 Echangeur thermique a contre-courant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10048016A DE10048016C1 (de) 2000-09-26 2000-09-26 Gegenstrom-Wärmetauscher
DE10048016.0 2000-09-26

Publications (1)

Publication Number Publication Date
WO2002027255A1 true WO2002027255A1 (fr) 2002-04-04

Family

ID=7657925

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/007741 WO2002027255A1 (fr) 2000-09-26 2001-07-06 Echangeur thermique a contre-courant

Country Status (4)

Country Link
EP (1) EP1320713A1 (fr)
AU (1) AU2001272524A1 (fr)
DE (1) DE10048016C1 (fr)
WO (1) WO2002027255A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010008383A1 (de) * 2010-02-17 2011-08-18 fischer eco solutions GmbH, 77855 Wärmeübertragersystem

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076153B (de) * 1956-09-17 1960-02-25 Gea Luftkuehler Ges M B H Waermetauscher fuer gasfoermige Medien hoher Temperaturen mit mehreren hintereinandergeschalteten Rohrbuendeln und im Kreuz-Gegenstrom gefuehrten Medien
FR1285548A (fr) * 1961-03-13 1962-02-23 Escher Wyss Sa Soc Réfrigérant préalable ou intermédiaire pour installation de turbine à gaz
DE2906837A1 (de) 1979-02-22 1980-09-04 Fsl Fenster System Lueftung Kontinuierlicher waermeaustauscher fuer gasfoermiges fluidum
EP0040890A1 (fr) 1980-05-22 1981-12-02 Aernoud Rudolf Könings Dispositif pour le traitement d'un fluide et méthode pour sa fabrication
US4907643A (en) * 1989-03-22 1990-03-13 C F Braun Inc. Combined heat exchanger system such as for ammonia synthesis reactor effluent
US4993484A (en) * 1989-01-17 1991-02-19 Kirkwood Community College Facilities Foundation Air to air heat exchanger
DE3336049C2 (de) 1982-10-05 1994-06-30 Japan Vilene Co Ltd Gegenstrom-Wärmetauscher
EP0650025A1 (fr) * 1993-10-21 1995-04-26 Tetra Laval Holdings & Finance SA Echangeur de chaleur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934106A1 (de) * 1979-08-23 1981-03-26 Karl-Heinrich Prof. Dr.-Ing. 5100 Aachen Hausmann Rohrwaermetauscher und verfahren zu dessen herstellung
DE29618878U1 (de) * 1996-10-30 1996-12-19 Rehau Ag + Co, 95111 Rehau Wärmetauscher

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076153B (de) * 1956-09-17 1960-02-25 Gea Luftkuehler Ges M B H Waermetauscher fuer gasfoermige Medien hoher Temperaturen mit mehreren hintereinandergeschalteten Rohrbuendeln und im Kreuz-Gegenstrom gefuehrten Medien
FR1285548A (fr) * 1961-03-13 1962-02-23 Escher Wyss Sa Soc Réfrigérant préalable ou intermédiaire pour installation de turbine à gaz
DE2906837A1 (de) 1979-02-22 1980-09-04 Fsl Fenster System Lueftung Kontinuierlicher waermeaustauscher fuer gasfoermiges fluidum
EP0040890A1 (fr) 1980-05-22 1981-12-02 Aernoud Rudolf Könings Dispositif pour le traitement d'un fluide et méthode pour sa fabrication
DE3336049C2 (de) 1982-10-05 1994-06-30 Japan Vilene Co Ltd Gegenstrom-Wärmetauscher
US4993484A (en) * 1989-01-17 1991-02-19 Kirkwood Community College Facilities Foundation Air to air heat exchanger
US4907643A (en) * 1989-03-22 1990-03-13 C F Braun Inc. Combined heat exchanger system such as for ammonia synthesis reactor effluent
EP0650025A1 (fr) * 1993-10-21 1995-04-26 Tetra Laval Holdings & Finance SA Echangeur de chaleur

Also Published As

Publication number Publication date
DE10048016C1 (de) 2002-05-16
AU2001272524A1 (en) 2002-04-08
EP1320713A1 (fr) 2003-06-25

Similar Documents

Publication Publication Date Title
DE3336049C3 (de) Gegenstrom-Wärmetauscher
DE3856032T3 (de) Wärmetauscher mit verbesserter Kondensatsammlung
DE3311579C2 (de) Wärmetauscher
DE10038624C2 (de) Wärmeübertragungsrohr mit gedrallten Innenrippen
DE102008058817B4 (de) Luft-Luft-Wärmetauscher
DE102004011608A1 (de) Wärmetauscher einer Fahrzeugklimaanlage
EP0192212A1 (fr) Echangeur de chaleur en spirale
DE2331563B2 (de) Waermetauscher
EP0014863A1 (fr) Echangeur de chaleur en continu pour un fluide gazeux
DE3734857C2 (fr)
DE202010008955U1 (de) Gegenstrom-Wärmetauscher
EP2192367B1 (fr) Echangeur thermique
DE19515528A1 (de) Umlenkboden aus Blech für zwei- oder mehrflutige Flachrohre von Wärmetauschern für Kraftfahrzeuge
DE102005048838A1 (de) Wärmetauscher
DE10048016C1 (de) Gegenstrom-Wärmetauscher
EP1434023B1 (fr) Sécheur à froid
EP0177904A2 (fr) Dispositif pour l'échange de chaleur entre deux gaz en flux croisé
DE10304077A1 (de) Luft-/Wasser-Wärmetauscher mit Teilwasserwegen
DE202015103710U1 (de) Gas-Fluid-Gegenstromwärmetauscher
EP0283718A1 (fr) Echangeur à contre-courant
AT396176B (de) Waermetauscher fuer einen wasserheizer
DE3830800C1 (en) Heat exchanger
WO2015082984A1 (fr) Batteries de tubes pour un radiateur de chauffage et radiateur de chauffage muni de batteries de tubes de ce type
DE102004054006B4 (de) Wärmetauscher
DE202020003801U1 (de) Gas-Gas-Gegenstromwärmeübertrager

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

WWE Wipo information: entry into national phase

Ref document number: 2001951654

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 2001951654

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Ref document number: 2001951654

Country of ref document: EP