EP0396131A2 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

Info

Publication number
EP0396131A2
EP0396131A2 EP90108360A EP90108360A EP0396131A2 EP 0396131 A2 EP0396131 A2 EP 0396131A2 EP 90108360 A EP90108360 A EP 90108360A EP 90108360 A EP90108360 A EP 90108360A EP 0396131 A2 EP0396131 A2 EP 0396131A2
Authority
EP
European Patent Office
Prior art keywords
sheet metal
heat exchanger
metal shells
exchanger according
complementary
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
EP90108360A
Other languages
German (de)
English (en)
Other versions
EP0396131A3 (fr
EP0396131B1 (fr
Inventor
Klaus Dipl.-Ing. Hagemeister
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.)
MTU Aero Engines GmbH
Original Assignee
MTU Motoren und Turbinen Union Muenchen 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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0396131A2 publication Critical patent/EP0396131A2/fr
Publication of EP0396131A3 publication Critical patent/EP0396131A3/fr
Application granted granted Critical
Publication of EP0396131B1 publication Critical patent/EP0396131B1/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
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0075—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements the plates having openings therein for circulation of the heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits

Definitions

  • the invention relates to a heat exchanger with two parallel manifolds, which are connected to one another via a matrix of several layers of profile tubes, the manifolds and matrix being constructed from a multiplicity of sheet metal shells arranged one above the other.
  • a generic heat exchanger arrangement has become known from DE-PS 32 42 845, in which connecting pieces are formed by the sheet metal shells with the manifolds, inserted into the profile tubes and connected gas-tight therewith.
  • DE-PS 35 43 893 discloses an arrangement in which a layer of profile tubes of a U-shaped matrix is formed in that a number of straight profile tubes are inserted into a deflection section composed of two shells. Both arrangements have the disadvantage that a high manufacturing expenditure arises from the fact that individual profile tubes have to be manufactured and connected to the sheet metal shells. There is also the need to provide spacers along the extent of the profile tubes so that the in Do not touch the small tubes attached to each other during operation or vibrate too much. Spacers of this type, as are known, for example, from DE-OS 37 26 058, require a high outlay on assembly, as a result of which the manufacturing costs for a heat exchanger increase significantly given the large number of profile tubes used.
  • the main advantages of the training according to the invention are the fact that the production of a complete heat exchanger from the sub-elements, i. H. the individual sheet metal trays are very simple and can be manufactured precisely and with high repeatability. Furthermore, the manufacturing process can be automated in a simple manner and thus contributes to a further simplification of the manufacturing process. Further advantages of this arrangement are that the two complementary sheet metal shells of a profile tube layer can be connected to one another in a simple and automatable manner in a fluid-tight manner at the contact points provided, for. B. by welding (diffusion welding) or soldering. The spacers required to maintain the regular assignment of the profile tubes to one another can be molded on from the outset without additional manufacturing effort.
  • Every second profile tube layer is preferably offset in cross-section like a chessboard from the adjacent profile tube layers arranged in such a way that the profile tubes of the adjacent profile tube layers lie in the region of the longitudinal slots of a layer.
  • This arrangement which is known in principle, has the advantage that profiled tubes can be arranged in the greatest possible packing density and the flow around them and the degree of exchange can thus be optimized.
  • a further advantageous embodiment of the invention provides that elements which extend perpendicular to the sheet metal shell plane are attached to the connecting webs to form spacers relative to adjacent tube layers. These elements are preferably attached after the connection of two sheet metal shells forming a profile tube layer and in this way enables simple manufacture of spacers with respect to the adjacent profile tube layers.
  • these vertically extending elements are two side flaps of a connecting web, which are originally arranged parallel to the longitudinal axis of the profile tube and are folded back inwards to form the spacers. This process can be carried out in a simple automated manner for an entire layer or a whole series of spacers.
  • the vertically extending element can also consist of a rivet which is driven by the connecting webs of two complementary sheet metal shells lying one on top of the other.
  • the two rivet heads of this rivet are designed so that they are adapted to the shape of the adjacent tube layers at the point of contact.
  • the adjacent profile tube layers can also have special shape changes, for example depressions, at the points of contact with the rivet heads in order to achieve a better support effect.
  • a further advantageous embodiment of the invention provides that support ribs are attached between complementary sheet metal shells in the area of the longitudinal axis of the profile tube. This prevents deformation of the profile tubes during operation due to the pressure difference between the outer area and the interior of the profile tubes.
  • these support ribs are designed as strips running between the sheet metal shells and connected to them in a zigzag fashion.
  • the bar can either be pre-shaped in a zigzag manner or, as an originally straight bar, can be stretched into its end contour by bulging the profile tubes by means of increased internal pressure.
  • support ribs are designed as support strips extending in the longitudinal direction of the profile tubes, such that the interior of the profile tubes is divided into two parallel cavities. These support strips are connected along their entire extent to the sheet metal shells, which prevents them from expanding during operation due to the excess pressure inside. These support strips can consist of solid material, so that two completely separate cavities are provided within each profile tube, or they can be perforated to save weight.
  • an alternative embodiment for preventing the expansion of the profiled tubes is that the sheet metal shells have regularly spaced, knob-like indentations in the region of the center of the profile tube, on which the complementary sheet metal shells are connected to one another at points.
  • this training is very simple to carry out before or after the two complementary shells have been joined, and thus enables the tube support to be designed in a substantially simplified manner.
  • These indentations are preferably attached in such a way that they are in the region of the connection Dungsstege the adjacent profile tube layers are arranged so that attached to the connecting webs rivet heads can be fitted into the indentations.
  • the arched shape of the profile tube wall and the rib effect of the profile tip give the necessary stiffness and stability against deformation over the span of the distances between adjacent indentations, while the separating forces from the internal pressure are dissipated via the knob connection.
  • the magnitude of the forces at these points corresponds to the length of the respectively assigned pipe section and is therefore proportional to the distance between the indentations described above.
  • the indentations must be arranged in closer succession along the length of the pipe.
  • the sheet metal shells are preferably designed in a frame-like manner, the collecting tubes being formed by punched-outs with bent collars in the middle of two opposite longitudinal sides of the frame, and the longitudinal slots on both sides of the punched-out holes are aligned to form two opposite U-shaped dies.
  • This training enables a particularly effective construction of the heat exchanger, which has already proven itself in conventional production.
  • a further development of this embodiment provides that the longitudinal slots extend to the beginning of the transverse sides of the frame, the latter being designed as a cavity which communicates with all the profiled tubes in order to form common deflecting sections.
  • the cavities can, however, have such a height that the sheet metal shells lying one on top of the other lie directly on top of one another in this area and that the hot gas flowing around the outside of the matrix is optimally guided and lateral escape can be avoided by bypassing the heat exchanger. This advantageously improves the degree of exchange.
  • the cavities inside can be provided with support knobs or support ribs, which prevent expansion during operation.
  • Sheet metal plates of the required external dimensions, wall thickness and quality are provided with the required relief pattern under dies by a drawing / pressing process, the symmetrical interior flow spaces being formed as a half-shell.
  • a one-sided die can also be used for this purpose, the sheet metal being shaped using hydraulic or pneumatic pressure.
  • the heat exchanger should be designed in such a way that these shells are symmetrical even on the envelope, so that the required mirror symmetry of two half-shells, which together form a layer element of the flow interior, can be represented with only one relief pattern.
  • the half-shell-like sheet metal shells are then subjected to a surface treatment in order to activate contact surfaces for the subsequent integral connection.
  • the connection of the two sheet metal shells then takes place at the contact surfaces with the supply of energy, whereby laser welding, electron beam welding, soldering, pressure welding can be considered as a diffusion connection or analog processes.
  • the additional material required can either be applied beforehand to the surfaces to be joined (e.g. galvanically, by vapor deposition, plating, by spraying or printing) or can be interposed as a film.
  • welding or soldering through resistance heating and high-frequency electrical currents is also possible.
  • the complementary sheet metal shells are joined together by means of high-frequency welding, the sheet metal shells which are spread apart being pressed against one another along their contact surfaces by profiled rollers which are shaped and shaped along the sheet metal shells, the ends of which have not yet been joined Tin cups of high frequency electricity is introduced.
  • the two complementary sheet metal shells to be joined are precisely aligned with each other in one device and are inserted on one side into an inlet gap of profiled columns rotating against one another.
  • the profiling of the otherwise cylindrical surfaces of these rolls corresponds to the negative of the relief pattern of the sheet metal shells, so that the latter are pressed onto one another only at the points to be connected when they pass through the rolls.
  • the areas of the sheet metal shells which are not yet in engagement with the rollers are spread apart, so that a gap narrowing up to the point of engagement results between their surfaces which are to be joined and are to be joined.
  • a high-frequency electrical voltage of opposite polarity is supplied to both sheet metal shells via sliding contacts.
  • An electrical current forms on the inner surfaces of the two sheet metal shells, which runs to the point of contact and passes there to the other side. This current transfer may only take place at the points that are to be cohesively connected. Other points of contact can be passivated.
  • additional material in a raised manner to the points to be connected, or to have a mask made of additional material, which has the image of the connection points, run into the joint gap during the joining procedure.
  • An alternative embodiment of the method is that the joining of the sheet metal shells is carried out with laser beams instead of the high-frequency electrical current, the laser beams being focused between the two wedge-shaped plates on their common contact points.
  • a larger number of engagement points are distributed over the width of the rollers, at each of which the continuous profile sheets must be pressed exactly onto one another.
  • the respective roller is preferably broken up into individual disks. These discs have central holes through which a common guide shaft runs with a slight play. The discs can also be positioned in their outer circumference by guide rollers, three each are sufficient. In any case, the required contact pressure is applied to each individual disc via a roller that is diametrically opposite the point of engagement. This role is activated by hydraulic or pneumatic elements or by springs.
  • the individual profile tube layers are stacked on top of one another and likewise connected to one another in the region of the collecting tubes in the manner described above. It is also possible to produce the longitudinal slots and punched holes in the header pipes only after the two complementary sheet metal shells have been joined together, instead of initially carrying out the drawing / pressing process.
  • An alternative production method of the heat exchanger according to the invention consists in that a passivating layer is applied to flat, pretreated surfaces with the required external dimensions at the points that are not joined together. This happens e.g. B. also by printing.
  • the other areas to be connected are coated with additional material for soldering or diffusion welding, e.g. B. by screen printing.
  • the complementary sheets to be joined are then placed on top of one another and joined together by heating. To prevent warping or unacceptably large gaps, the sheets are pressed together.
  • the sheets are mechanically pressed only on their outline, while a hydraulic or pneumatic pressure is applied to the surface during the connection process.
  • the sheet metal shell 1 shown in FIG. 1 is constructed essentially in a frame-like manner and has two round cutouts 2a, b in the center of two opposite longitudinal sides of the frame to form two header tubes. Furthermore, a plurality of parallel longitudinal slots 4, which are regularly interrupted by connecting webs 3, are provided in such a way that continuous longitudinal strips 5 extending from the area of the recesses 2a, b to the transverse sides of the frame are formed to form walls of the profile tube.
  • the sheet metal shell 1 is profiled in the region of the longitudinal strips 5 in a trough-like manner to form profile tubes which are approximately elliptical in cross section.
  • FIG. 2 shows how a layer of profile tubes is formed by two sheet metal shells 1a, b lying one on top of the other.
  • the sheet metal shells 1a, b are correspondingly profiled in the area of the longitudinal strips 5.
  • the longitudinal slots 4 are interrupted by the connecting webs 3.
  • the profile tubes 6 are formed in that the longitudinal strips 5 along their edges 7 z. B. be joined together by welding.
  • Adjacent profile tube layers 8a, b are arranged offset such that the profile tubes 6 of one layer 8a are arranged in the region of the longitudinal slots 4 of the second profile tube layer 8b.
  • Rivets with two rivet heads 9a, b are let into the connecting webs 3 on both sides of the sheet metal shells 1a, b.
  • depressions 10 are provided in the profile tubes 6 of the profile tube layer 8b above and below them, in which the contacting wall sections are welded together. These depressions 10 are preferably provided in the area of the rivet heads 9a, b of the adjacent profile tube layer 8a. However, they can also be arranged in between if this is necessary due to the internal pressure.
  • FIG. 3 shows a cross section through three adjacent profile tube layers 8a, b, c, which shows how the rivet heads 9a, b of a profile tube layer 8b interact with the depressions 10 of the adjacent profile tube layers 8a, c.
  • the two sheet metal shells 1a, b are soldered or welded to one another at the depressions 10 in the region of the contact points 11.
  • 4 is the 3 shown in longitudinal section of the profile tube 6, wherein it can be seen that the depressions 10 are punctiform.
  • FIG. 5 An alternative embodiment of the connecting webs 3 is shown in FIG. 5, in which the spacing between two adjacent profile tube layers 8a, b takes place through bent-back side flaps 13 of the connecting webs 3.
  • FIG. 6 An alternative embodiment of the connecting webs 3 is shown in FIG. 5, in which the spacing between two adjacent profile tube layers 8a, b takes place through bent-back side flaps 13 of the connecting webs 3.
  • FIG. 6 An alternative embodiment of the connecting webs 3 is shown in FIG. 5, in which the spacing between two adjacent profile tube layers 8a, b takes place through bent-back side flaps 13 of the connecting webs 3.
  • VI-VI which is shown in Fig. 6
  • the profiled tube 6a has regularly spaced depressions 10 which are connected to one another along their contact points 11.
  • the version 6b has a longitudinally extending support bar 15b, which is alternately bent in one and in the other direction in order to achieve a sufficient connection surface with the profile tube walls 14a, b. Furthermore, the support bar 15b has regularly distributed recesses 16, which contributes to a reduction in weight.
  • the version 6c has a continuous, cross-sectionally concave support strip 15c, which is connected to the two profile tube walls 14a, b.
  • the profile tube 6d has a straight support bar 15d that is regularly perforated.
  • the embodiment for a profiled tube 6e shows a serpentine strip 18, which is also connected to the two profiled tube walls 14a, b.
  • the embodiment 6f finally shows a zigzag-like strip 18, which can be produced, for example, by stretching from an originally straight strip.
  • the two sheet metal shells 1a, b are bent up and are pressed against one another by two co-operating rollers 19a, b.
  • the sheet metal shells 1a, b are simultaneously drawn into the gap between the rollers 19a, b.
  • the sheet metal shells 1a, b are connected to an AC generator 21 via contacts 20a, b.
  • a high-frequency alternating voltage is passed over the sheet metal shells 1a, b to their connection point 22 in the gap between the rollers 19a, b.
  • the AC generator 21 supplies currents in the range of a few amperes at frequencies of approximately 10 MHz to 1 GHz.
  • the specialist chooses the exact parameters depending on the material, geometry and dimensions.
  • the heat exchanger elements produced in this way and consisting of two complementary sheet metal shells 1a, b are then stacked on top of one another and soldered to one another in another way, for example by means of diffusion welding or by applying solder material in the area around the cutouts 2a, b.

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)
EP90108360A 1989-05-05 1990-05-03 Echangeur de chaleur Expired - Lifetime EP0396131B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3914774 1989-05-05
DE3914774A DE3914774A1 (de) 1989-05-05 1989-05-05 Waermetauscher

Publications (3)

Publication Number Publication Date
EP0396131A2 true EP0396131A2 (fr) 1990-11-07
EP0396131A3 EP0396131A3 (fr) 1991-07-10
EP0396131B1 EP0396131B1 (fr) 1993-09-29

Family

ID=6380108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108360A Expired - Lifetime EP0396131B1 (fr) 1989-05-05 1990-05-03 Echangeur de chaleur

Country Status (4)

Country Link
US (1) US5086837A (fr)
EP (1) EP0396131B1 (fr)
JP (1) JPH0351695A (fr)
DE (2) DE3914774A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005829A1 (fr) * 2002-07-03 2004-01-15 Ingersoll-Rand Energy Systems Corporation Echangeur thermique a ecoulement transversal comportant des cellules dotees de plaques et d'ailettes formant un passage d'ecoulement en forme de u

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122961A1 (de) * 1991-07-11 1993-01-14 Kloeckner Humboldt Deutz Ag Waermeaustauscher
DE4129215C2 (de) * 1991-09-03 2003-04-30 Behr Gmbh & Co Verfahren zum Herstellen von Flachrohren mit Turbulenzeinlagen und Flachrohre
US5636527A (en) * 1995-11-15 1997-06-10 The Ohio State University Research Foundation Enhanced fluid-liquid contact
FR2754595B1 (fr) * 1996-10-11 1999-01-08 Ziemann Secathen Echangeur de chaleur, et faisceau d'echange de chaleur, ainsi que procedes de soudage et de realisation s'y rapportant
ES2267771T3 (es) * 2000-04-15 2007-03-16 Audi Ag Instalacion de gases de escape para motores de combustion.
US8087452B2 (en) * 2002-04-11 2012-01-03 Lytron, Inc. Contact cooling device
DE10333577A1 (de) * 2003-07-24 2005-02-24 Bayer Technology Services Gmbh Verfahren und Vorrichtung zur Entfernung von flüchtigen Substanzen aus hochviskosen Medien
US7637313B2 (en) * 2004-04-14 2009-12-29 Panasonic Corporation Heat exchanger and its manufacturing method
KR200361913Y1 (ko) * 2004-06-30 2004-09-14 주식회사 엘지화학 접합부가 볼트로 체결된 난방용 패널
EP1705445A1 (fr) * 2005-03-04 2006-09-27 Methanol Casale S.A. Procédé de fabrication d'un échangeur de chaleur à plaques et appareil correspondant.
EP2018906A1 (fr) * 2007-07-19 2009-01-28 Methanol Casale S.A. Echangeur de chaleur pour réacteurs chimiques isothermes
US9683789B2 (en) * 2009-11-24 2017-06-20 Air To Air Sweden Ab Method of producing multiple channels for use in a device for exchange of solutes or heat between fluid flows
ITMI20110465A1 (it) * 2011-03-24 2012-09-25 Rosella Rizzonelli Dispositivo scambiatore di calore.
FR2997644B1 (fr) * 2012-11-08 2015-05-15 Technicatome Procede de soudage par diffusion
DE112015003388T5 (de) * 2014-07-21 2017-04-27 Dana Canada Corporation Wärmetauscher mit Strömungshindernissen zum Verringern von Fluidtotzonen
FR3024224B1 (fr) * 2014-07-25 2018-12-07 Airbus Helicopters Echangeur thermique a plaques avec renforts structurels pour turbomoteur
RU2699851C1 (ru) * 2019-05-20 2019-09-11 Акционерное общество "ОДК-Климов" Трубчатый теплообменник
JP2022070491A (ja) * 2020-10-27 2022-05-13 有限会社和氣製作所 熱交換器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339151A1 (fr) * 1976-01-22 1977-08-19 Ostbo John David Perfectionnements aux echangeurs de chaleur empiles
US4270602A (en) * 1978-08-30 1981-06-02 The Garrett Corporation Heat exchanger
DE3242845A1 (de) * 1982-11-19 1984-05-24 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Waermetauscher fuer gase stark unterschiedlicher temperaturen
DE3726058A1 (de) * 1987-08-06 1989-02-16 Mtu Muenchen Gmbh Waermetauscher fuer gase stark unterschiedlicher temperaturen, insbesondere in kreuz-gegenstrom-bauweise

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957679A (en) * 1955-06-02 1960-10-25 Olin Mathieson Heat exchanger
US2868519A (en) * 1957-09-06 1959-01-13 Louis G Tocci Dry material mixing machine
DE3543893A1 (de) * 1985-12-12 1987-06-25 Mtu Muenchen Gmbh Waermetauscher
DE3636762C1 (de) * 1986-10-29 1988-03-03 Mtu Muenchen Gmbh Waermetauscher
GB8719473D0 (en) * 1987-08-18 1987-09-23 Cesaroni A J Headers for heat exchangers
US4860823A (en) * 1988-03-02 1989-08-29 Diesel Kiki Co., Ltd. Laminated heat exchanger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339151A1 (fr) * 1976-01-22 1977-08-19 Ostbo John David Perfectionnements aux echangeurs de chaleur empiles
US4270602A (en) * 1978-08-30 1981-06-02 The Garrett Corporation Heat exchanger
DE3242845A1 (de) * 1982-11-19 1984-05-24 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Waermetauscher fuer gase stark unterschiedlicher temperaturen
DE3726058A1 (de) * 1987-08-06 1989-02-16 Mtu Muenchen Gmbh Waermetauscher fuer gase stark unterschiedlicher temperaturen, insbesondere in kreuz-gegenstrom-bauweise

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004005829A1 (fr) * 2002-07-03 2004-01-15 Ingersoll-Rand Energy Systems Corporation Echangeur thermique a ecoulement transversal comportant des cellules dotees de plaques et d'ailettes formant un passage d'ecoulement en forme de u

Also Published As

Publication number Publication date
DE3914774A1 (de) 1990-11-08
DE3914774C2 (fr) 1992-12-03
EP0396131A3 (fr) 1991-07-10
DE59002877D1 (de) 1993-11-04
JPH0351695A (ja) 1991-03-06
US5086837A (en) 1992-02-11
EP0396131B1 (fr) 1993-09-29

Similar Documents

Publication Publication Date Title
DE3914774C2 (fr)
DE69330803T2 (de) Kühlröhren für Wärmetauscher
DE69310143T2 (de) Wärmetauscher mit geschweissten platten
DE19639115C2 (de) Plattenförmiges Wärmeübertragerelement
DE69425154T2 (de) Warmgewalzter hubbalken und verfahren zur herstellung
DE4039293C3 (de) Wärmeaustauscher
DE29614186U1 (de) Wärmetauscher, insbesondere Wäschetrocknerkondensator, und zu dessen Herstellung bestimmte Rohranordnung
DE3914773C2 (de) Wärmetauscher mit mindestens zwei Sammelrohren
EP1235655B1 (fr) Assemblage de couches minces en forme de bandes a deux faces ou multifaces superposees, en particulier de deux bandes soumises a un traitement en continu
DE69603383T2 (de) Wärmetauscher und Verfahren zu seiner Herstellung
DE2939431A1 (de) Zusammengesetzte metallplatte und verfahren zu ihrer herstellung
DE69609460T2 (de) Rohr mit Zwischenwand, Endkammer eines Wärmetauschers und sein Herstelllungsverfahren
DE2622673A1 (de) Verfahren zur kontinuierlichen verschweissung von steifen stegen mit langen rohren
CH384008A (de) Verfahren zur Herstellung von Wärmetauschern
DE2131085A1 (de) Gefaechertes Steg-Rippenrohr und Verfahren zu seiner Herstellung
EP3507046B1 (fr) Procede de fabrication d'un bloc d'echangeur de chaleur a plaques consistant en l'application ciblee de materiau a braser, en particulier sur des ailettes et barres laterales
DE2936148B2 (de) Stützgitter für Wärmeübertrager und Verfahren zu seiner Herstellung
DE4322405A1 (de) Verfahren zur Herstellung von Wärmetauscherelementen sowie Vorrichtung zur Durchführung des Verfahrens
EP0186130B1 (fr) Procédé pour la fabrication d'éléments annulaires pour des structures cylindriques des tuyaux collecteurs d'échangeurs thermiques
EP0928941A2 (fr) Radiateur plat
EP1529934B1 (fr) Corps de catalyseur et son procédé de fabrication
EP4396395A2 (fr) Procédé de fabrication d'une structure de support métallique pour une électrode, structure de support métallique et électrode
DE2700221B2 (de) Verfahren und Vorrichtung zur Herstellung von Plattenwärmetauschern
DE69211959T2 (de) Plattenstruktur und Verfahren zur dessen Herstellung
DE2253948C2 (de) Verfahren zum Herstellen einer trommelförmigen Gitterkonstruktion

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): CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19901220

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI SE

17Q First examination report despatched

Effective date: 19920203

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI SE

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59002877

Country of ref document: DE

Date of ref document: 19931104

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

Effective date: 19940106

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

Ref country code: DE

Payment date: 19940419

Year of fee payment: 5

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

Ref country code: FR

Payment date: 19940420

Year of fee payment: 5

Ref country code: CH

Payment date: 19940420

Year of fee payment: 5

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

Ref country code: GB

Payment date: 19940421

Year of fee payment: 5

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

Ref country code: SE

Payment date: 19940425

Year of fee payment: 5

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
EAL Se: european patent in force in sweden

Ref document number: 90108360.0

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

Ref country code: GB

Effective date: 19950503

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

Ref country code: SE

Effective date: 19950504

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

Ref country code: LI

Effective date: 19950531

Ref country code: CH

Effective date: 19950531

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950503

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: 19960201

EUG Se: european patent has lapsed

Ref document number: 90108360.0

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

Ref country code: FR

Effective date: 19960229

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050503