EP0553340B1 - Plattenwärmetauscher - Google Patents

Plattenwärmetauscher Download PDF

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Publication number
EP0553340B1
EP0553340B1 EP92918527A EP92918527A EP0553340B1 EP 0553340 B1 EP0553340 B1 EP 0553340B1 EP 92918527 A EP92918527 A EP 92918527A EP 92918527 A EP92918527 A EP 92918527A EP 0553340 B1 EP0553340 B1 EP 0553340B1
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EP
European Patent Office
Prior art keywords
bundle
plates
heat exchanger
fluid
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92918527A
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English (en)
French (fr)
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EP0553340A1 (de
Inventor
Yves Couchet
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.)
Alfa Laval Packinox SAS
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Packinox SA
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Publication of EP0553340A1 publication Critical patent/EP0553340A1/de
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    • 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
    • F28D9/0037—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 conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • F28D9/0006—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 plate-like or laminated conduits being enclosed within a pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/104—Particular pattern of flow of the heat exchange media with parallel flow

Definitions

  • the present invention relates to the design of plate type heat exchangers. They are generally distinguished from tubular exchangers by the fact that the fluids in a heat exchange situation circulate longitudinally on either side of corrugated plates arranged parallel to one another so as to rest on each other. others by ridges of their respective undulations.
  • the present invention relates more particularly to a heat exchanger of the plate type, comprising a heat exchange bundle constituted by corrugated plates resting on each other by ridges of their respective corrugations, so that said plates provide between them first and second passage channels for respectively a first and a second heat exchange fluid.
  • exchangers of this type include a bundle of parallel flat plates which are made of thin sheets, most often made of stainless steel, provided with corrugations by which they are in contact with one another and by which they organize the circulation of fluids longitudinally from one end to the other of the exchanger (generally against the current one of the other), creating turbulence favorable to the heat exchanges which take place between the fluids through each plate.
  • the plates are all welded together by means of tongues or frames forming spacers which hold the spacing between two successive joint plates.
  • the stack of plates thus stiffened is framed by two relatively thick sheets, which transfer the weight of the beam onto a support.
  • the tongues are placed continuously on the flat lateral edges of the plates on either side of each individual plate, so as to ensure its connection by welding with the two adjacent plates which surround it.
  • Their thickness balances that of the corrugations by which the thin sheets constituting the plates bear on one another, while providing circulation channels for an exchange fluid between two successive plates, which are all closed all along the edges side plates.
  • Such an embodiment of the beam is particularly difficult to implement.
  • the welding operation involves substantially different thicknesses of material to be welded, between the tongues and the thin sheets, this leads to stresses and cracks due to differences in thermal inertia.
  • the present invention aims in particular to design an easier production beam which is lighter and which overcomes the above drawbacks. It is situated in a usual technological context, where this beam is placed in an enclosure suitable for receiving and containing that of the fluids with the highest pressure.
  • the objective of the present invention is a plate-type heat exchanger, comprising a heat exchange bundle constituted by corrugated plates resting on each other by ridges of their respective corrugations and forming between them first and second passage channels for respectively a first and a second heat exchange fluid, characterized in that said bundle is formed of a stack of pairs each formed of two plates mutually in contact by their respective lateral edges and welded to each other by these edges from one end to the other end of said bundle, so that said channels are alternately closed and open along said lateral edges in a enclosure containing said bundle, in that said plates are also joined at the ends of the bundle by the intermediate tabs providing inlets and outlets for said fluids, and in that said exchanger comprises at least one connection box which is welded to said tabs at one end of the bundle to guide the circulation of one of the heat exchange fluids between said closed channels and an internal conduit guiding it through said enclosure.
  • the invention makes it possible to eliminate the intermediate tabs between plates on the lateral edges, at least once in two, whereby this leads not only to a noticeable reduction in the weight of the whole beam, but above all, the consequences of welding operations involving thicknesses of material to be welded substantially different, between the tongues and the thin sheets, where tensions and cracks due to the differences of thermal inertia.
  • a first welding step consists in welding two by two the lateral edges of the plates, pressed against each other, preferably without filler metal. Each pair of two plates thus forms a fluid passage channel, longitudinally from one end to the other of the bundle.
  • the present invention also relates to the production of a plate-type heat exchanger comprising a pressure resistance enclosure in which the bundle of heat exchange plates is placed.
  • the exchanger according to the invention then advantageously comprises means for supplying and evacuating the heat exchange fluids between the outside of the enclosure and the ends of the bundle, at the level of intermediate tabs which join the plates while sparing inputs and outputs for said fluids.
  • these supply and evacuation means are preferably arranged so that the second fluid flowing in the open passage channels fills the enclosure.
  • This second fluid will preferably be the fluid at higher pressure, so that it is not necessary to provide elements for taking up pressure forces on the bundle, the holding of the stack being ensured by the fluid at higher pressure filling the enclosure, preferably upstream of the pressure drop it undergoes when crossing the beam.
  • Such an embodiment which does not require the welding operation of the entire beam on its lateral edges, also allows in a variant to embodiment, to ensure better filling in volume of the enclosure, generally cylindrical, by authorizing the production of a bundle of plates from pairs of plates of different widths. A better exchange capacity of the exchanger is therefore obtained for a given size.
  • the latter is advantageously surrounded by a substantially parallelepipedal box open at its two longitudinal ends.
  • this box is of particularly simple constitution, insofar as it does not need to ensure a resumption of the pressure forces.
  • the second higher pressure fluid circulating in the open channels and in the volume of the enclosure makes it possible to avoid elements for taking up these forces.
  • the box is replaced by two plates constituting side panels of length identical to the length of the plates and of width somewhat greater than the height of the stack.
  • the beam will be placed directly in the enclosure and the stack will be maintained once the pressurization has been carried out by the second higher fluid pressure.
  • the latter advantageously comprises at its longitudinal ends, intermediate tabs which, to determine the access passages of the fluids at the inlet and at the beam exit, are placed so that the laterally closed passage channels are open at the ends in the central part and the open channels for the second fluid between two adjoining pairs of two laterally welded plates are on the contrary closed by tabs in the same central area.
  • tabs Conversely, in the two lateral zones on either side of the central zone, there are tabs closing the closed passage channels while the passage channels for the first fluid remain open.
  • the relatively thick tongues advantageously have a much shorter length along the thin sheets to be welded, and moreover, the welding involves the walls of the collector, which are also relatively thick compared to the thin sheets constituting the plates.
  • the means for supplying and evacuating the first fluid-between the outside of the enclosure and the ends of the bundle advantageously comprise according to the invention, at each longitudinal end of the bundle, an internal collector circuit consisting of a box of internal connection, welded by its longitudinal edges to the overlapping area of the lateral and central tabs and by its transverse edges to the external plates of the stack, and an internal conduit ensuring the connection between the connection box and the outside of the enclosure by crossing it.
  • the means for discharging the second exchange fluid advantageously comprise an external collector circuit, consisting of an external connection box, welded by its edges to the end of the box, and an external conduit coaxial with the internal conduit of the collector internal constituting the means for supplying the first fluid, ensuring the connection between the external box and the outside of the enclosure.
  • connection boxes are preferably made in the form of half-cylinders, the inlet box for the first fluid being inside the outlet box for the second fluid.
  • the means for supplying the second fluid may be produced in a similar manner to its means of evacuation, but they advantageously consist of a simple orifice in the enclosure, the second higher pressure fluid thus freely entering the bundle at the same time as it fills the enclosure, designed to withstand high pressure.
  • a bundle 1 of heat exchange plates according to the invention as shown in Figures 1 and 2 consists of a stack of pairs 2 of plates 3, 3 '.
  • Each pair 2 of plates 3, 3 ' is produced by superimposing two thin sheets constituting the plates 3, 3' bearing on each other by internal ridges 4 of corrugations which they comprise and which constitute their own means to organize the circulation of heat exchange fluids passing between two neighboring plates belonging to the same couple.
  • the plates 3, 3 ′ furthermore comprise a frame with a smooth surface, devoid of undulations and allowing in particular that two plates 3, 3 'constituting a couple 2 are welded to each other by the respective lateral edges 5, 5' of the plates 3, 3 'pressed against each other, without metal of input.
  • the pairs 2 of plates 3, 3 ′ thus produced constitute closed passage channels 6, longitudinally from one end to the other of the bundle 1, for a first heat exchange fluid.
  • pairs 2 of plates 3, 3 ′ are then stacked on each other and the intervals between two pairs of neighboring plates, in contact with external ridges 7 of the undulations of their plates, provide open passage channels 8 for a second heat exchange fluid.
  • the stack is then, in the example described, maintained in a simple rectangular box 9 open at both ends.
  • the purpose of this box 9 is firstly to channel the second heat exchange fluid into the open channels 8, and secondly, secondarily, to keep the stack in place until it is pressurized in an enclosure 10 ( Figure 5), designed to withstand the pressure of fluids.
  • the fluid circulating in the closed channels 6 will preferably be the fluid at lower pressure, or at least that which does not fill the enclosure, generally with a cylindrical shell, containing the bundle of plates.
  • the higher pressure fluid thus circulating in the open channels 8 at the same time as it fills the enclosure 10 as will be seen later, this makes it possible to prevent the box 9 having to take up the efforts of pressure.
  • tongues are put in place spacers 11, 12 (FIG. 2) which determine the passages of the fluid at the entry and exit of the bundle, where the passage channels 6, 8 connect to connection boxes 13, 14 (FIG. 3), so then carry out the welding of the end tongues 11, 12 and of the transverse edges 15, 15 'with smooth surface of the plates 3, 3' at the same time as that of internal connection boxes 13, 16 (FIG. 5) for the first fluid.
  • the exchanger as shown in Figure 5 is an exchanger where the entire bundle 1 is suspended from the enclosure 10 with a cylindrical shell by an external manifold 17 of the first low-pressure heat exchange fluid, passing to the festive end of the exchanger inside an internal collector 18 of the second high-pressure heat exchange fluid, while at the foot end, the second high-pressure fluid freely enters the bundle 1 at the same time that it fills the enclosure 10, designed to resist high pressure, and that the first low pressure fluid leaves the bundle 1 via an internal manifold 19.
  • collectors 17, 18, 19 constitute means for supplying and evacuating the heat exchange fluids from the outside of the enclosure 10 towards the ends of the bundle.
  • the internal collector circuits 18 and 19 each consist of an internal connection box 13, 16 of generally semi-cylindrical shape, and an internal conduit 20, 21 ensuring the connection between the connection box 18 or 19 and the outside the enclosure 10.
  • the external collector circuit 17 consists of an external connection box 14 of generally semi-cylindrical shape and of an external conduit 22 ensuring the connection between the connection box 17 and outside the enclosure 10, the internal 20 and external 22 conduits being coaxial.
  • the channels 6 which were closed laterally during the plate 3 on plate 3 ′ welding step are open at the ends in a central zone 23 and are closed in the two lateral zones 24 and 25 on either side of the zone central 23 by the tongues 11, both at the head and at the bottom of the beam.
  • the open channels 8 formed for the second fluid between two couples 2 joined to two plates 3, 3 'welded laterally are on the contrary closed by tongues 12 in the central zone 23 so as not to communicate with the internal collectors 18, 19.
  • the welding of these tongues is therefore carried out on the transverse edges of the plates at the same time as the welding of the internal connection boxes 13, 16 on an overlap zone 30 of the tongues 11, 12 at the two edges of the central zone 23 and on the central zone of the transverse edges of the two external plates of the bundle 1.
  • a final welding step consists in welding the external connection box 17 on the end of the box 9 surrounding the bundle.
  • FIG. 4 shows the best filling by volume which can be obtained according to the invention in a cylindrical shell 26 constituting the enclosure of the exchanger.
  • a beam 27 of plates 28 of different widths In this case, a beam 27 of plates 28 of different widths.
  • a stepped section of the bundle as shown is made possible by the realization of the bundle in the form of pairs of stacked plates between which the passage channels for the second fluid can remain open.

Claims (13)

  1. Plattenwärmetauscher mit einer Wärmetauschergruppe, die aus gewellten Platten besteht, wobei jede Platte mit den Scheiteln ihrer Wellungen auf denen der Nachbarplatten aufliegt und wobei zwischen
    den Platten (3, 3') erste und zweite Strömungskanäle (6, 8) für ein erstes bzw. ein zweites Wärmetauscher-Fluid ausgebildet werden,
    dadurch gekennzeichnet, daß
    die Wärmetauschergruppe (1) aus einem Stapel von Plattenpaaren (2) gebildet ist, welche jeweils aus zwei Platten (3, 3') zusammengesetzt sind, die an ihren Längsseitenrändern (5, 5') miteinander in Kontakt stehen und von einer bis zur anderen Stirnseite der Wärmetauschergruppe (1) an diesen Längsseitenrändern so miteinander verschweißt sind, daß die Strömungskanäle (6, 8) wechselweise geschlossen oder offen an den Längsseitenrändern entlang in einem die Wärmeaustauschergruppe (1) einschliessenden Behälter (10) sind,
    daß die Platten darüber hinaus an den Stirnseitenenden der Wärmetauschergruppe mit Dichtleisten (11, 12) verbunden sind, wobei Einlaß- und Auslaßöffnungen für die Fluide ausgebildet werden,
    und daß der Wärmetauscher mindestens einen Anschlußkasten, welcher zum Leiten des Umlaufs des einen am Wärmeaustausch beteiligten, durch die entsprechenden ersten Kanäle (6) strömenden Fluides an einem Stirnseitenende der Wärmetauschergruppe mit den Leisten verschweißt ist, sowie eine innere Rohrleitung (20) aufweist, die dieses Fluid durch den genannten Behälter (10) leitet.
  2. Plattenwärmetauscher nach Anspruch 1,
    dadurch gekennzeichnet, daß jeder geschlossene Strömungskanal (6) an seinen beiden Stirnseiten zwei Dichtleisten (11) aufweist, die beide Stirnseitenenden beiderseits eines den Einlaß in den geschlossenen Strömungskanal (6) bildenden Mittelbereiches (23) abdichten,
    und daß jeder offene Strömungskanal (8) an seinen beiden Stirnseiten eine Dichtleiste (12) aufweist, die jedes Stirnseitenende im Mittelbereich (23) abdichtet.
  3. Plattenwärmetauscher nach Anspruch 2,
    dadurch gekennzeichnet, daß die Länge der Dichtleisten (11, 12) so bemessen ist, daß sie in montierter Position von Kanal zu Kanal an den Rändern des Mittelbereiches (23) einen Überlappungsbereich aufweisen.
  4. Plattenwärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Längsseitenränder (5, 5') zweier benachbarter Platten, welche ein Paar (2) von Platten (3, 3') bilden, durch Aufeinanderpressen, vorzugsweise ohne Zugabe von (Schweiß-) Metall, miteinander verschweißt werden.
  5. Plattenwärmetauscher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß er eine Kammer (9) enthält, welche an ihren stirnseiten offen ist und die Wärmetauschergruppe (1) so umschließt, daß das zweite am Wärmeaustausch beteiligte Fluid in den offenen Kanälen (8) seitlich kanalisiert wird.
  6. Plattenwärmetauscher nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zur Optimierung der Raumausnutzung in dem genannten Behälter (10) die Wärmetauschergruppe (27) aus Plattenpaaren (28) unterschiedlicher Breite zusammengesetzt ist, wobei der Behälter als zylindrischer Mantel (26) ausgebildet ist.
  7. Plattenwärmetauscher nach Anspruch 4 oder 6, dadurch gekennzeichnet, daß zu beiden Längsseiten der Wärmetauschergruppe (1), den Längsseitenrändern der Platten gegenüberstehend zwei Seitenteile vorgesehen sind, deren Länge in etwa der Plattenlänge und deren Höhe in etwa der Höhe des Stapels entsprechen, so daß das zweite am Wärmeaustausch beteiligte Fluid von einer Stirnseite der Wärmetauschergruppe zur anderen in Längsrichtung kanalisiert wird.
  8. Plattenwärmetauscher nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß der Anschlußkasten (13) für das erste am Wärmeaustausch beteiligte Fluid, welches zum Strömen durch die geschlossenen Kanäle (6) bestimmt ist, eine im wesentlichen halbzylindrische Form aufweist und in den Überlappungsbereichen gemäß Anspruch 3 sowie an den quer verlaufenden Rändern der Außenplatten der Wärmetauschergruppe (1) an die Leisten (11, 12) angeschweißt ist.
  9. Plattenwärmetauscher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Anschlußkasten (13) zusammen mit der Rohrleitung (20) eine innere Samelleitung (18) zur Zuführung des ersten Fluids in die geschlossenen Kanäle (6) der Wärmetauschergruppe (1) bildet, und daß zur Entnahme des ersten Fluids aus dem Behälter (10) eine entsprechende Sammelleitung (19) an der unteren Stirnseite der Wärmetauschergruppe vorgesehen ist.
  10. Plattenwärmetauscher nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß zur Entnahme eines zweiten am Wärmeaustausch beteiligten Fluids, welches zum Strömen durch die offenen Kanäle (8) bestimmt ist, eine äußere Sammelleitung (17), die einen äußeren, vorzugsweise im wesentlichen halbzylindrischen, am offenen Stirnseitenende der Kammer (9) angeschweißten Anschlußkasten (14) aufweist, sowie eine äußere Rohrleitung (22) vorgesehen sind, die für die Verbindung zwischen dem äußeren Anschlußkasten (14) und der außenseite des behälters (10) sorgt.
  11. Plattenwärmetauscher nach Anspruch 10, dadurch gekennzeichnet, daß die innere Sammelleitung (18) zur Zuführung des ersten Fluids in der äußeren Sammelleitung (17) zur Entnahme des zweiten Fluids eingeschlossen ist, wobei letztere an der oberen Stirnseite der Wärmetauschergruppe (1) angeordnet ist.
  12. Plattenwärmetauscher nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß sich die Mittel zur Zuführung des zweiten Fluids über eine einfache Öffnung in den Behälter (10) öffnen, wobei das zweite Fluid auf diese Weise frei die Wärmetauschergruppe (1) durchströmt und gleichzeitig den Behälter (10) füllt.
  13. Verfahren zur Herstellung eines Wärmetauschers gemäß Anspruch 11 oder 12, mit einer Wärmetauschergruppe aus Platten gemäß Anspruch 4, dadurch gekennzeichnet, daß es umfaßt:
    - In einem ersten Arbeitsgang: das paarweise Verschweißen der Längsseitenränder (5, 5') der Platten (3, 3') durch Aufeinanderpressen, vorzugsweise ohne Zugabe von (Schweiß-)Metall;
    - Aufstapeln der auf diese Weise hergestellten Paare (2) von Platten (3, 3') und Anordnen des Stapels in einer quaderförmigen, an beiden Stirnseiten offenen Kammer (9);
    - Einsetzen der Dichtleisten (11, 12) an den Stirnseitenenden der durch die Stapelung gebildeten Kanäle (6, 8), welche die Strömungswege der Fluide an beiden Stirnseitenenden der Wärmetauschergruppe festlegen;
    - In einem zweiten Schweißarbeitsgang: Verschweißen der Leisten (11, 12) und der quer verlaufenden Ränder (15, 15') der Platten sowie der Anschlußkästen im Überlappungsbereich der Leisten (11, 12);
    - In einem dritten Schlweißarbeitsgang: Verschweißen von mindestens einem äußeren Anschlußkasten (14) mit einem Stirnseitenende der die Wärnetauschergruppe (1) einschließenden Kammer (9).
EP92918527A 1991-08-21 1992-08-19 Plattenwärmetauscher Expired - Lifetime EP0553340B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9110473 1991-08-21
FR9110473A FR2680566B1 (fr) 1991-08-21 1991-08-21 Echangeur a plaques.
PCT/FR1992/000804 WO1993004330A1 (fr) 1991-08-21 1992-08-19 Echangeur a plaques

Publications (2)

Publication Number Publication Date
EP0553340A1 EP0553340A1 (de) 1993-08-04
EP0553340B1 true EP0553340B1 (de) 1996-01-31

Family

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Application Number Title Priority Date Filing Date
EP92918527A Expired - Lifetime EP0553340B1 (de) 1991-08-21 1992-08-19 Plattenwärmetauscher

Country Status (6)

Country Link
EP (1) EP0553340B1 (de)
JP (1) JP3190675B2 (de)
AT (1) ATE133781T1 (de)
DE (1) DE69208072T2 (de)
FR (1) FR2680566B1 (de)
WO (1) WO1993004330A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2716960B1 (fr) * 1994-03-04 1996-06-14 Packinox Sa Faisceau de plaques pour un échangeur thermique.
SE502779C2 (sv) * 1994-05-18 1996-01-08 Tetra Laval Holdings & Finance Svetsad plattvärmeväxlare och förfarande för svetsning av värmeöverföringsplattor till en plattvärmeväxlare
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
FR2764973B1 (fr) * 1997-06-24 1999-09-17 Packinox Sa Procede d'assemblage des plaques d'un faisceau de plaques et faisceau de plaques realise par un tel procede
FR2901016B1 (fr) * 2006-05-12 2008-07-18 Kapp France Sa Echangeur de chaleur a plaques d'echange soudees

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH416699A (de) * 1964-01-30 1966-07-15 Ramens Patenter Ab Wärmeaustauscher
AT343155B (de) * 1975-08-01 1978-05-10 Guido Amandus De Lepeleire Plattenwarmeaustauscher und verfahren zu seiner herstellung
FR2381990A1 (fr) * 1977-02-28 1978-09-22 Charraudeau Jacques Echangeurs de chaleur a plaques utilisant des cadres fonctionnels
FR2471569A1 (fr) * 1979-12-12 1981-06-19 Neo Tec Etude Applic Tech Echangeur thermique a toles empilees
FR2638226B1 (fr) * 1988-10-24 1991-05-17 Packinox Sa Echangeur a plaques

Also Published As

Publication number Publication date
JP3190675B2 (ja) 2001-07-23
WO1993004330A1 (fr) 1993-03-04
DE69208072D1 (de) 1996-03-14
ATE133781T1 (de) 1996-02-15
DE69208072T2 (de) 1996-10-02
FR2680566B1 (fr) 1996-09-13
FR2680566A1 (fr) 1993-02-26
EP0553340A1 (de) 1993-08-04
JPH07500898A (ja) 1995-01-26

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