EP0578933A1 - Welded plate type heat exchanger - Google Patents

Welded plate type heat exchanger Download PDF

Info

Publication number
EP0578933A1
EP0578933A1 EP93106729A EP93106729A EP0578933A1 EP 0578933 A1 EP0578933 A1 EP 0578933A1 EP 93106729 A EP93106729 A EP 93106729A EP 93106729 A EP93106729 A EP 93106729A EP 0578933 A1 EP0578933 A1 EP 0578933A1
Authority
EP
European Patent Office
Prior art keywords
plate
heat exchanger
plates
bends
exchanger according
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
EP93106729A
Other languages
German (de)
French (fr)
Other versions
EP0578933B2 (en
EP0578933B1 (en
Inventor
Václav Dipl.-Ing. Machata
Karel Hubácek
Edmund Neubauer
Karel Dipl.-Ing. Tvrdy
Jaromir Tecl
Zdenek Matejka
Tomás Dipl.-Ing. Zvolánek
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.)
Tenez AS
Original Assignee
Tenez AS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6463292&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0578933(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tenez AS filed Critical Tenez AS
Publication of EP0578933A1 publication Critical patent/EP0578933A1/en
Application granted granted Critical
Publication of EP0578933B1 publication Critical patent/EP0578933B1/en
Publication of EP0578933B2 publication Critical patent/EP0578933B2/en
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
    • 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
    • F28D9/005—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 the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00—Spacing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding

Definitions

  • the invention relates to a plate heat exchanger with a plurality of profiled, substantially rectangular plates with inlet and outlet openings in the corner areas, which are arranged in a stack such that flow spaces between the plates can be alternately fed with a first and a heat-exchanging second medium, the Plates are welded together and sealed from the environment.
  • Welded plate heat exchangers have the advantage over heat exchangers with detachable plates that the elastic seals between the plates can be dispensed with. Therefore, welded plate heat exchangers can be operated at higher temperatures and pressures as well as with more aggressive media than heat exchangers with seals. In addition, there is no fear of malfunctions due to leaking seals that need to be replaced.
  • Welded plate heat exchangers are known from the English patent applications 2 126 703 and 2 167 175, in which the spacing and welding of adjacent plates is carried out using separate metal sealing strips. These sealing strips are made according to the desired flow application is welded onto the one plate, then the neighboring plate is aligned accordingly and in turn welded onto these metal strips. With regard to the latter welding process, it is necessary to weld through the upper plate. So that there is no damage to the previously made welded connection, the sealing strips must be staggered relative to one another in successive flow spaces. All of this leads to very high manufacturing costs for these plate heat exchangers.
  • the present invention is therefore based on the object of specifying a plate heat exchanger in which all of the plates are welded to one another, but which is distinguished from the prior art by much less expensive production.
  • the plates are angled several times along their outer circumference, so that they have a staggered first peripheral region parallel to the plate, which is aligned with one apex of the plate profiling and a second staggered peripheral region parallel to this, with aligned with the other apex of the plate profiling, that the inlet and outlet openings of each plate for the one medium have annular surfaces which are approximately - preferably exactly - offset from one apex plane, while the inlet and outlet openings for the other medium have annular surfaces which about - preferably exactly - are offset from the other apex plane, and that two adjacent ones Plates are welded continuously along the adjoining first edge regions and along the ring surfaces or adjoining bends to form a cassette, while adjacent cassettes are welded continuously along the adjoining second edge regions and along the ring surfaces or adjoining turns.
  • the design according to the invention has the advantage that all plates can be shaped identically, so that only one type of stamp is necessary for the entire heat exchanger. To produce the cassettes, the plates only need to be rotated 180 ° against each other so that they come to lie back to back in pairs.
  • the ring surfaces on one side of the plate longitudinal axis are offset opposite to the ring surfaces on the other side of the plate longitudinal axis.
  • the plates then have to be rotated about their transverse axis and the media flow predominantly in the counterflow direction.
  • edge areas as well as the ring surface of each plate are flat so that a problem-free, tight weld is guaranteed.
  • a particularly advantageous embodiment of the invention consists in that the bends adjoining the ring surfaces are arranged approximately perpendicularly thereto and that these bends are alternately directed so that the plates which form a common cassette each have bends which can be plugged together.
  • the panels of a cassette no longer need to be welded within the panel hole, but from the top of the panel, which is more accessible and visible. The welding is therefore easier and at the same time more reliable.
  • bends of two plates to be put together are of unequal length, in such a way that the free edges of the bends are aligned when plugged together. This makes welding even easier.
  • each plate has a large and slightly less protruding bend at the top and the same at the bottom.
  • the first edge region, along which the plates are welded to form a cassette, is expediently through an intermediate piece running perpendicular to the plate plane is connected to the second edge area, along which the cassettes are welded together.
  • the edge areas immediately follow one another on the outside and a compact structure of the plate is obtained.
  • the heat exchanger plates 1 of both designs have in common that they each have an opening 2 at their four corners have for the inlet and outlet of the heat-exchanging media and that the field between these openings is profiled with waves 8.
  • These shafts 8 are arranged symmetrically with respect to the plate plane, that is to say they protrude by the same amount on both sides.
  • both designs have in common that the plates are surrounded by a first edge region 3, this edge region being offset from one apex plane of the shafts 8, at least as far as the shafts 8 protrude.
  • Two of the four openings 2 are offset by the same amount in one apex plane of the shafts 8 and the other two openings in the other apex plane of the shafts 8.
  • the openings 2 are each surrounded by an annular surface 5 and 9, which join this offset.
  • the two openings arranged in the left half of the plate, of which only the upper one is visible, are offset with their ring surfaces 9 as well as the first edge region 3, whereas the two openings arranged in the right half of the plate , of which only the upper one is also visible, are offset with their ring area 5 to the rear.
  • an approximately cylindrical bend 5a and 9a adjoins the inner edge of the ring surfaces 5 and 9, respectively.
  • the size and direction of these bends are chosen so that in the case of two plates with which a cassette is to be formed, the bends at the openings 2 or 3 which are not Should have passage to the plate gap, are slidably to be inserted into each other and that then the free edges of the bends are aligned with each other when plugged together. This allows these bends to be welded easily and reliably from the top of the plate.
  • a second edge region 4 adjoins the inner edge region 3 via an intermediate piece that runs perpendicular to the plate plane, but which runs in the opposite apex plane to the edge region 3.
  • FIGS 3 and 4 show sections through the plate pack according to Figure 1, but the plates have no bends 5a and 9a.
  • the welding at the inlet and outlet openings is carried out along the ring surfaces 5 and 9, which are adjacent to one another in pairs.
  • the other plate design according to FIGS. 1a to 4a differs in that the second edge region 4 is dispensed with, that is to say the plates run out with the first edge region 3 and that adjacent cassettes are connected by interposed U-profiles 10, cf. Figure 1a.
  • These U-profiles 10 are dimensioned such that they fit flush into the space between the edge areas 3 of adjacent cassettes, so that their legs can easily be welded to these edge areas.
  • the plates do not need to be welded together individually, but there is the advantageous possibility of stacking the plates and U profiles and to weld together two panels that form a cassette and two U-profiles on both sides in a single operation.
  • the plate heat exchanger is assembled in such a way that two plates belonging together are placed one on top of the other, so that, for example, the bends 5a are inserted into one another, so that the bends 5a are then welded together at both openings, and then a U-profile frame 10 and the third heat exchanger plate is placed so that their bends 9a are mated with the corresponding bends 9a of the second plate and then the bends 9a are welded together.
  • This process is repeated with the placement of the fourth plate, which in turn is inserted and welded with the bends 5a.

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)

Abstract

Plate heat exchanger in which all the plates (1) are welded to one another, for which purpose the plates (1) have along their outer circumference two mutually offset edge regions (3, 4) and likewise mutually offset inlet and outlet openings (2) via which they are welded alternately to one another. <IMAGE>

Description

Die Erfindung betrifft einen Plattenwärmetauscher mit mehreren profilierten, im wesentlichen rechteckigen Platten mit Ein- und Auslauföffnungen in den Eckbereichen, die derart in einem Stapel angeordnet sind, daß zwischen den Platten Strömungsräume abwechselnd mit einem ersten und einem damit wärmetauschenden zweiten Medium beschickbar sind, wobei die Platten durch Schweißen miteinander verbunden und gegenüber der Umgebung abgedichtet sind.The invention relates to a plate heat exchanger with a plurality of profiled, substantially rectangular plates with inlet and outlet openings in the corner areas, which are arranged in a stack such that flow spaces between the plates can be alternately fed with a first and a heat-exchanging second medium, the Plates are welded together and sealed from the environment.

Geschweißte Plattenwärmetauscher haben gegenüber den Wärmetauschern mit lösbaren Platten den Vorteil, daß auf die elastischen Dichtungen zwischen den Platten verzichtet werden kann. Daher können geschweißte Plattenwärmetauscher mit höheren Temperaturen und Drücken wie auch mit aggressiveren Medien betrieben werden als Wärmetauscher mit Dichtungen. Darüber hinaus sind keine Betriebsstörungen durch undicht werdende und deshalb auszutauschende Dichtungen zu befürchten.Welded plate heat exchangers have the advantage over heat exchangers with detachable plates that the elastic seals between the plates can be dispensed with. Therefore, welded plate heat exchangers can be operated at higher temperatures and pressures as well as with more aggressive media than heat exchangers with seals. In addition, there is no fear of malfunctions due to leaking seals that need to be replaced.

Durch die englischen Patentanmeldungen 2 126 703 und 2 167 175 sind geschweißte Plattenwärmetauscher bekannt, bei denen die Distanzierung und Verschweißung benachbarter Platten über separate Dichtungsstreifen aus Metall erfolgt. Diese Dichtungsstreifen werden entsprechend der gewünschten Strömungsbeaufschlagung auf die eine Platte geschweißt, sodann wird die Nachbarplatte entsprechend ausgerichtet und ihrerseits auf diese Metallstreifen angeschweißt. Hinsichtlich des letztgenannten Schweißvorganges ist es jeweils notwendig, durch die obere Platte hindurchzuschweißen. Damit es hier nicht zu Schädigungen der zuvor hergestellten Schweißverbindung kommt, müssen die Dichtungsstreifen in aufeinanderfolgenden Strömungszwischenräumen jeweils relativ zueinander versetzt angeordnet werden. All dies führt zu sehr hohem Herstellungsaufwand für diese Plattenwärmetauscher.Welded plate heat exchangers are known from the English patent applications 2 126 703 and 2 167 175, in which the spacing and welding of adjacent plates is carried out using separate metal sealing strips. These sealing strips are made according to the desired flow application is welded onto the one plate, then the neighboring plate is aligned accordingly and in turn welded onto these metal strips. With regard to the latter welding process, it is necessary to weld through the upper plate. So that there is no damage to the previously made welded connection, the sealing strips must be staggered relative to one another in successive flow spaces. All of this leads to very high manufacturing costs for these plate heat exchangers.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, einen Plattenwärmetauscher anzugeben, bei dem alle Platten miteinander verschweißt sind, der sich jedoch gegenüber dem Stand der Technik durch wesentlich kostengünstigere Herstellung auszeichnet.The present invention is therefore based on the object of specifying a plate heat exchanger in which all of the plates are welded to one another, but which is distinguished from the prior art by much less expensive production.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Platten längs ihrem äußeren Umfang mehrfach abgewinkelt sind, so daß sie einen versetzten ersten parallel zur Platte umlaufenden Randbereich aufweisen, der mit der einen Scheitelebene der Plattenprofilierung fluchtet und einen zweiten versetzten hierzu parallel umlaufenden Randbereich, der mit der anderen Scheitelebene der Plattenprofilierung fluchtet, daß gleichermaßen die Ein- und Auslauföffnung jeder Platte für das eine Medium Ringflächen aufweisen, die etwa - vorzugsweise genau - zu der einen Scheitelebene versetzt sind, während die Ein- und Auslauföffnung für das andere Medium Ringflächen aufweisen, die etwa - vorzugsweise genau - zu der anderen Scheitelebene versetzt sind, und daß jeweils zwei benachbarte Platten durchgehend entlang den aneinanderliegenden ersten Randbereichen und entlang den Ringflächen oder daran anschließenden Abbiegungen zu einer Kassette verschweißt sind, während benachbarte Kassetten durchgehend entlang den aneinanderliegenden zweiten Randbereichen und entlang den Ringflächen oder daran anschließenden Abbiegungen verschweißt sind.This object is achieved in that the plates are angled several times along their outer circumference, so that they have a staggered first peripheral region parallel to the plate, which is aligned with one apex of the plate profiling and a second staggered peripheral region parallel to this, with aligned with the other apex of the plate profiling, that the inlet and outlet openings of each plate for the one medium have annular surfaces which are approximately - preferably exactly - offset from one apex plane, while the inlet and outlet openings for the other medium have annular surfaces which about - preferably exactly - are offset from the other apex plane, and that two adjacent ones Plates are welded continuously along the adjoining first edge regions and along the ring surfaces or adjoining bends to form a cassette, while adjacent cassettes are welded continuously along the adjoining second edge regions and along the ring surfaces or adjoining turns.

Auf diese Weise erübrigt sich das Anbringen separater Dichtungsleisten. Vielmehr brauchen lediglich die aneinanderliegenden Plattenränder miteinander verschweißt zu werden, was angesichts der dünnen Wandstärke der Platten keine Probleme macht. Wesentlich ist dabei, daß durch den gezielten Versatz der Ringflächen und gegebenenfalls der Abbiegungen an den Ein- und Auslaßöffnungen auch dort ohne zusätzliche Maßnahmen die zum Trennen der Produktströme notwendige Verschweißung längs aneinanderliegender Plattenbereiche möglich ist.In this way, there is no need to attach separate sealing strips. Rather, only the adjacent plate edges need to be welded together, which makes no problems in view of the thin wall thickness of the plates. It is essential that the targeted offset of the ring surfaces and, if necessary, the bends at the inlet and outlet openings also makes it possible to weld longitudinally adjacent plate regions there without additional measures, to separate the product streams.

Darüber hinaus bietet die erfindungsgemäße Gestaltung den Vorteil, daß alle Platten identisch geprägt sein können, daß also für den gesamten Wärmetauscher nur ein Stempeltyp notwendig ist. Zur Herstellung der Kassetten brauchen die Platten lediglich um 180° gegeneinander verdreht zu werden, damit sie paarweise Rücken an Rücken zu liegen kommen.In addition, the design according to the invention has the advantage that all plates can be shaped identically, so that only one type of stamp is necessary for the entire heat exchanger. To produce the cassettes, the plates only need to be rotated 180 ° against each other so that they come to lie back to back in pairs.

Strömungstechnisch besonders günstig ist es, wenn die Ringflächen an der einen Seite der Plattenlängsachse entgegengesetzt zu den Ringflächen an der anderen Seite der Plattenlängsachse versetzt sind. Die Platten müssen dann um ihre Querachse verdreht werden und die Medien strömen überwiegend in Gegenstromrichtung. Selbstverständlich liegt es aber auch im Rahmen der Erfindung, die Ringflächen relativ zur Plattenquerachse zu versetzen.From a fluidic point of view, it is particularly favorable if the ring surfaces on one side of the plate longitudinal axis are offset opposite to the ring surfaces on the other side of the plate longitudinal axis. The plates then have to be rotated about their transverse axis and the media flow predominantly in the counterflow direction. Of course, it is also within the scope of the invention to offset the ring surfaces relative to the transverse axis of the plate.

In allen Fällen empfiehlt es sich, daß die Randbereiche wie auch die Ringfläche jeder Platte plan ausgebildet sind, damit eine problemlose, dichte Schweißung gewährleistet ist.In all cases, it is recommended that the edge areas as well as the ring surface of each plate are flat so that a problem-free, tight weld is guaranteed.

Eine besonders zweckmäßige Ausgestaltung der Erfindung besteht darin, daß die sich an die Ringflächen anschließenden Abbiegungen etwa senkrecht dazu angeordnet sind und daß diese Abbiegungen abwechselnd so gerichtet sind, daß die Platten, die eine gemeinsame Kassette bilden, jeweils zusammensteckbare Abbiegungen aufweisen. Dadurch brauchen die Platten einer Kassette nicht mehr innerhalb des Plattenloches verschweißt werden, sondern von der Plattenoberseite, die besser zugänglich und sichtbar ist. Die Verschweißung wird daher leichter und gleichzeitig zuverlässiger.A particularly advantageous embodiment of the invention consists in that the bends adjoining the ring surfaces are arranged approximately perpendicularly thereto and that these bends are alternately directed so that the plates which form a common cassette each have bends which can be plugged together. As a result, the panels of a cassette no longer need to be welded within the panel hole, but from the top of the panel, which is more accessible and visible. The welding is therefore easier and at the same time more reliable.

Dabei ist es besonders günstig, wenn die zusammenzusteckenden Abbiegungen zweier Platten ungleich lang sind, derart, daß die freien Ränder der Abbiegungen in zusammengestecktem Zustand fluchten. Dadurch wird das Verschweißen nochmals erleichtert.It is particularly expedient if the bends of two plates to be put together are of unequal length, in such a way that the free edges of the bends are aligned when plugged together. This makes welding even easier.

Bei dieser Bauform hat also jede Platte oben eine weit und eine etwas weniger weit vorstehende Abbiegung und unten ebenso.With this design, each plate has a large and slightly less protruding bend at the top and the same at the bottom.

Der erste Randbereich, längs dem die Platten zur Bildung einer Kassette verschweißt werden, ist zweckmäßig durch ein senkrecht zur Plattenebene umlaufendes Zwischenstück mit dem zweiten Randbereich verbunden, längs dem die Kassetten miteinander verschweißt werden. Dadurch folgen die Randbereiche nach außen unmittelbar aufeinander und man erhält einen kompakten Aufbau der Platte.The first edge region, along which the plates are welded to form a cassette, is expediently through an intermediate piece running perpendicular to the plate plane is connected to the second edge area, along which the cassettes are welded together. As a result, the edge areas immediately follow one another on the outside and a compact structure of the plate is obtained.

In Weiterbildung der Erfindung bietet sich auch die Möglichkeit, den zweiten, außen liegenden Randbereich wegzulassen und die Verschweißung benachbarter Kassetten derart durchzuführen, daß ein umlaufendes U-Profil zwischen benachbarte Kassetten eingelegt wird, das mit seinen beiden Schenkeln an den voneinander distanzierten Seiten der ersten Randbereiche anliegt und mit diesen durchgehend verschweißt wird. Dieses U-Profil hat zweckmäßig die Form eines Rahmens, kann aber auch aus einzelnen Stücken zusammengesetzt werden.In a further development of the invention, there is also the possibility of omitting the second, outer edge region and of welding adjacent cassettes in such a way that a circumferential U-profile is inserted between neighboring cassettes, the two legs of which on the spaced apart sides of the first edge regions is applied and is continuously welded to them. This U-profile has the shape of a frame, but can also be assembled from individual pieces.

Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung; dabei zeigt

Figur 1
drei im oberen Lochbereich geschnittene Platten in Schrägansicht gemäß einer ersten Bauform;
Figur 2
die Draufsicht auf eine solche Platte;
Figur 3
eine schematische Seitenansicht durch einen Stapel solcher Platten;
Figur 4
eine Ansicht von oben auf diesen Stapel und
Figur 1a bis Figur 4a
die gleichen Ansichten wie die zuvor genannten Figuren bei einer zweiten Plattenbauform.
Further features and details of the invention emerge from the following description of exemplary embodiments with reference to the drawing; shows
Figure 1
three obliquely cut plates cut in the upper hole area according to a first design;
Figure 2
the top view of such a plate;
Figure 3
a schematic side view through a stack of such plates;
Figure 4
a top view of this stack and
Figure 1a to Figure 4a
the same views as the aforementioned figures for a second plate design.

Den Wärmetauscherplatten 1 beider Bauformen ist gemeinsam, daß sie an ihren vier Ecken jeweils eine Öffnung 2 für den Zu- und Ablauf der wärmetauschenden Medien aufweisen und daß das Feld zwischen diesen Öffnungen mit Wellen 8 profiliert ist. Diese Wellen 8 sind symmetrisch bezüglich der Plattenebene angeordnet, stehen also beidseits um das gleiche Maß vor.The heat exchanger plates 1 of both designs have in common that they each have an opening 2 at their four corners have for the inlet and outlet of the heat-exchanging media and that the field between these openings is profiled with waves 8. These shafts 8 are arranged symmetrically with respect to the plate plane, that is to say they protrude by the same amount on both sides.

Außerdem ist beiden Bauformen gemeinsam, daß die Platten von einem ersten Randbereich 3 umgeben sind wobei dieser Randbereich zu der einen Scheitelebene der Wellen 8 hin versetzt ist, und zwar mindestens so weit, wie die Wellen 8 vorstehen. Um das gleiche Maß sind auch zwei der vier Öffnungen 2 in die eine Scheitelebene der Wellen 8 und die beiden anderen Öffnungen in die andere Scheitelebene der Wellen 8 versetzt. Dabei sind die Öffnungen 2 jeweils von einer Ringfläche 5 bzw. 9 umgeben, die diesen Versatz mitmachen.In addition, both designs have in common that the plates are surrounded by a first edge region 3, this edge region being offset from one apex plane of the shafts 8, at least as far as the shafts 8 protrude. Two of the four openings 2 are offset by the same amount in one apex plane of the shafts 8 and the other two openings in the other apex plane of the shafts 8. The openings 2 are each surrounded by an annular surface 5 and 9, which join this offset.

Bezogen auf die vordere Platte in Figur 1 sind also die beiden in der linken Plattenhälfte angeordneten Öffnungen, von denen nur die obere sichtbar ist, mit ihren Ringflächen 9 ebenso wie der erste Randbereich 3 nach vorn versetzt, wogegen die beiden in der rechten Plattenhälfte angeordneten Öffnungen, von denen ebenfalls nur die obere sichtbar ist, mit ihrem Ringbereich 5 nach hinten versetzt sind.With respect to the front plate in FIG. 1, the two openings arranged in the left half of the plate, of which only the upper one is visible, are offset with their ring surfaces 9 as well as the first edge region 3, whereas the two openings arranged in the right half of the plate , of which only the upper one is also visible, are offset with their ring area 5 to the rear.

Insoweit stimmen beide Plattenbauformen überein.In this respect, both plate designs are the same.

Bei der Plattenbauform gemäß den Figuren 1 bis 4 schließt sich an den Innenrand der Ringflächen 5 und 9 jeweils eine etwa zylindrische Abbiegung 5a bzw. 9a an. Größe und Richtung dieser Abbiegungen sind so gewählt, daß bei zwei Platten, mit denen eine Kassette gebildet werden soll, die Abbiegungen an den Öffnungen 2 oder 3, die keinen Durchlaß zum Plattenzwischenraum aufweisen sollen, gleitend ineinander zu stecken sind und daß dann die freien Ränder der Abbiegungen in zusammengestecktem Zustand miteinander fluchten. Dadurch können diese Abbiegungen von der Plattenoberseite her einfach und zuverlässig verschweißt werden.In the plate design according to FIGS. 1 to 4, an approximately cylindrical bend 5a and 9a adjoins the inner edge of the ring surfaces 5 and 9, respectively. The size and direction of these bends are chosen so that in the case of two plates with which a cassette is to be formed, the bends at the openings 2 or 3 which are not Should have passage to the plate gap, are slidably to be inserted into each other and that then the free edges of the bends are aligned with each other when plugged together. This allows these bends to be welded easily and reliably from the top of the plate.

Außerdem schließt sich an den inneren Randbereich 3 über ein senkrecht zur Plattenebene umlaufendes Zwischenstück ein zweiter Randbereich 4 an, der jedoch in der entgegengesetzten Scheitelebene verläuft wie der Randbereich 3.In addition, a second edge region 4 adjoins the inner edge region 3 via an intermediate piece that runs perpendicular to the plate plane, but which runs in the opposite apex plane to the edge region 3.

Die Verbindung dieser Plattenbauform geschieht wie folgt: An die hintere Wärmetauschplatte 1 in Figur 1 wird eine gleichartige Wärmetauschplatte - jedoch mit entgegengesetzten Abbiegungen - in umgekehrter Orientierung, das heißt 180° um die Querachse gedreht, gelegt. Dann liegen beide Platten, also die hintere und die mittlere, längs dem ersten Randbereich 3 sowie längs den beiden Ringflächen 9 und den ineinandererstreckenden Abbiegungen 9a aneinander und werden längs dem Randbereich 3 sowie stumpf am Rand der Abbiegungen 9a zusammengeschweißt. So entsteht eine erste Kassette mit einem Strömungskanal 6 wie in den Bildern 1, 3 und 4 dargestellt.The connection of this plate design takes place as follows: A similar heat exchange plate is placed on the rear heat exchange plate 1 in FIG. 1 - but with opposite bends - in the reverse orientation, that is to say rotated 180 ° about the transverse axis. Then both plates, that is to say the rear and the middle, lie along the first edge region 3 and along the two ring surfaces 9 and the mutually extending bends 9a and are welded together along the edge region 3 and butt at the edge of the bends 9a. This creates a first cassette with a flow channel 6 as shown in Figures 1, 3 and 4.

Weitere, gleichermaßen hergestellte Kassettten werden dann Rücken an Rücken aneinandergelegt und durch Verschweißen entlang den aneinanderliegenden äußeren Randbereichen 4 und den ineinandererstreckenden Abbiegungen 5a miteinander verschweißt, wobei der Zwischenkassettenkanal 7 entsteht. Auf diese Weise wird weiter vorgegangen, bis der Plattenstapel die gewünschte Größe hat, etwa entsprechend Figur 3 und 4.Further cassettes produced in the same way are then placed back to back and welded to one another by welding along the adjacent outer edge regions 4 and the mutually extending bends 5a, the intermediate cassette channel 7 being formed. In this way, the procedure is continued until the plate stack has the desired size, approximately according to FIGS. 3 and 4.

Stattdessen ist es ebenso möglich, zuerst alle Kassetten herzustellen, indem die Randbereiche 3 und Abbiegungen 9a aller Plattenpaare miteinander verschweißt werden und später alle Kassetten längs den äußeren Randbereichen 4 und den Abbiegungen 5a zu verschweißen.Instead, it is also possible first to produce all the cassettes by welding the edge regions 3 and bends 9a of all plate pairs to one another and later to weld all the cassettes along the outer edge regions 4 and the bends 5a.

Ebenso ist es stattdessen möglich, eine Platte nach der anderen anzuschweißen, und zwar jeweils längs den Abbiegungen 5a und 9a sowie längs der Randbereiche 3 und erst am Schluß das komplette Plattenpaket längs der äußeren Randbereiche 4 zu verschweißen.It is also possible instead to weld one plate at a time, namely along the bends 5a and 9a and along the edge regions 3 and only at the end to weld the complete plate package along the outer edge regions 4.

Die Figuren 3 und 4 zeigen Schnitte durch das Plattenpaket gemäß Figur 1, wobei die Platten jedoch keine Abbiegungen 5a und 9a aufweisen. Die Verschweißung an den Ein- und Auslauföffnungen erfolgt in diesem Fall längs den paarweise aneinanderliegenden Ringflächen 5 bzw. 9.Figures 3 and 4 show sections through the plate pack according to Figure 1, but the plates have no bends 5a and 9a. In this case, the welding at the inlet and outlet openings is carried out along the ring surfaces 5 and 9, which are adjacent to one another in pairs.

Die andere Plattenbauform gemäß den Figuren 1a bis 4a unterscheidet sich dadurch, daß auf den zweiten Randbereich 4 verzichtet wird, die Platten also mit dem ersten Randbereich 3 auslaufen und daß die Verbindung benachbarter Kassetten durch zwischengelegte U-Profile 10 erfolgen, vgl. Figur 1a. Diese U-Profile 10 sind so bemessen, daß sie in den Zwischenraum zwischen den Randbereichen 3 benachbarter Kassetten bündig hineinpassen, so daß ihre Schenkel leicht mit diesen Randbereichen verschweißt werden können.The other plate design according to FIGS. 1a to 4a differs in that the second edge region 4 is dispensed with, that is to say the plates run out with the first edge region 3 and that adjacent cassettes are connected by interposed U-profiles 10, cf. Figure 1a. These U-profiles 10 are dimensioned such that they fit flush into the space between the edge areas 3 of adjacent cassettes, so that their legs can easily be welded to these edge areas.

Bei dieser Bauform brauchen die Platten nicht einzeln zusammengeschweißt werden, sondern es besteht die vorteilhafte Möglichkeit, die Platten und U-Profile übereinander zu legen und jeweils zwei Platten, die eine Kassette bilden, und zwei beidseits aufgelegte U-Profile in einem einzigen Arbeitsgang zusammenzuschweißen.With this design, the plates do not need to be welded together individually, but there is the advantageous possibility of stacking the plates and U profiles and to weld together two panels that form a cassette and two U-profiles on both sides in a single operation.

Am zweckmäßigsten erfolgt der Zusammenbau des Plattenwärmetauschers in der Weise, daß zwei zusammengehörende Platten aufeinandergelegt werden, so daß beispielsweise die Abbiegungen 5a ineinanderstecken, daß sodann gleichzeitig an beiden Öffnungen die Abbiegungen 5a miteinander verschweißt werden, daß anschließend ein U-Profilrahmen 10 und die dritte Wärmetauscherplatte aufgelegt wird, so daß ihre Abbiegungen 9a mit den korrespondierenden Abbiegungen 9a der zweiten Platte ineinanderstecken und daß sodann die Abbiegungen 9a miteinander verschweißt werden. Dieser Vorgang wiederholt sich mit dem Auflegen der vierten Platte, die wiederum mit den Abbiegungen 5a eingesteckt und verschweißt wird. Wenn das komplette Plattenpaket derart an den Öffnungen verschweißt ist, werden zum Schluß alle Außenränder verschweißt.Most conveniently, the plate heat exchanger is assembled in such a way that two plates belonging together are placed one on top of the other, so that, for example, the bends 5a are inserted into one another, so that the bends 5a are then welded together at both openings, and then a U-profile frame 10 and the third heat exchanger plate is placed so that their bends 9a are mated with the corresponding bends 9a of the second plate and then the bends 9a are welded together. This process is repeated with the placement of the fourth plate, which in turn is inserted and welded with the bends 5a. When the entire plate pack is welded in this way at the openings, all outer edges are welded at the end.

Auch bei dieser Bauform besteht die Möglichkeit, die Abbiegungen 5a und 9a wegzulassen und stattdessen die Verschweißung längs der aneinanderliegenden Ringflächen 5 oder 9 vorzunehmen. Diese Variante ist in den Figuren 1a bis 4a dargestellt.With this type of construction there is also the possibility of omitting the bends 5a and 9a and instead of carrying out the welding along the adjoining ring surfaces 5 or 9. This variant is shown in Figures 1a to 4a.

Diese Verschweißung ist zwar von der Zugänglichkeit her etwas problematisch, bietet aber dafür den Vorteil, daß der gesamte Wärmetauscher aus absolut identischen Platten zusammengebaut werden kann, wogegen man bei dem eingangs beschriebenen Ausführungsbeispiel zwei leicht unterschiedliche Plattentypen benötigt, weil die Abbiegungen einmal nach vorn, einmal nach hinten und mit unterschiedlicher Länge vorstehen müssen. In der Praxis hat dies kaum Bedeutung. Daher kann die Verschweißung über die abgebogenen Ränder 5a oder 9a auch bei der Bauform gemäß den Figuren 1a bis 4a vorteilhaft angewendet werden.This welding is somewhat problematic in terms of accessibility, but offers the advantage that the entire heat exchanger can be assembled from absolutely identical plates, whereas two slightly different plate types are required in the exemplary embodiment described at the outset, because the Turns forward once, backwards and with different lengths. In practice, this is of little importance. Therefore, the welding over the bent edges 5a or 9a can also be used advantageously in the construction according to FIGS. 1a to 4a.

Claims (12)

Plattenwärmetauscher mit mehreren profilierten, im wesentlichen rechteckigen Platten mit Ein- und Auslauföffnungen in den Eckbereichen, die derart in einem Stapel angeordnet sind, daß zwischen den Platten Strömungsräume abwechselnd mit einem ersten und einem damit wärmetauschenden zweiten Medium beschickbar sind, wobei die Platten durch Schweißen miteinander verbunden und gegenüber der Umgebung abgedichtet sind,
dadurch gekennzeichnet,
daß die Platten (1) längs ihrem äußeren Umfang mehrfach abgewinkelt sind, so daß sie einen versetzten ersten, parallel zur Platte umlaufenden Randbereich (3) aufweisen, der mit der einen Scheitelebene der Plattenprofilierung (8) fluchtet, und einen zweiten versetzten, hierzu parallel umlaufenden Randbereich (4), der mit der anderen Scheitelebene der Plattenprofilierung (8) fluchtet, daß gleichermaßen die Ein- und die Auslaßöffnung (2) jeder Platte für das eine Medium Ringflächen (9) aufweisen, die etwa bis zu der einen Scheitelebene der Plattenprofilierung versetzt sind, während die Ein- und die Auslauföffnung (2) für das andere Medium Ringflächen (5) aufweisen, die etwa bis zu der anderen Scheitelebene versetzt sind und daß jeweils zwei benachbarte Platten durchgehend entlang den aneinanderliegenden ersten Randbereichen (3) und entlang den Ringflächen (9) oder daran anschließenden Abbiegungen (9a) zu einer Kassette verschweißt sind, während benachbarte Kassetten durchgehend entlang den aneinanderliegenden zweiten Randbereichen (4) und entlang den Ringflächen (5) oder daran anschließenden Abbiegungen (5a) verschweißt sind.Plate heat exchanger with a plurality of profiled, essentially rectangular plates with inlet and outlet openings in the corner areas, which are arranged in a stack such that flow spaces between the plates can be alternately fed with a first and a heat-exchanging second medium, the plates being welded together connected and sealed from the environment,
characterized,
that the plates (1) are angled several times along their outer circumference, so that they have an offset first peripheral region (3) which runs parallel to the plate and which is aligned with one apex plane of the plate profile (8), and a second offset, parallel to this circumferential edge area (4), which is flush with the other apex plane of the plate profiling (8), that the inlet and outlet openings (2) of each plate for the one medium have annular surfaces (9) which are approximately up to the one apex plane of the plate profiling are offset, while the inlet and outlet openings (2) for the other medium have ring surfaces (5) which are offset approximately up to the other apex plane and that two adjacent plates are continuous along the adjacent first edge regions (3) and are welded to a cassette along the ring surfaces (9) or adjoining bends (9a), while adjacent cassettes are welded continuously along the adjoining second edge regions (4) and along the ring surfaces (5) or adjoining bends (5a). Plattenwärmetauscher nach Anspruch 1,
dadurch gekennzeichnet,
daß alle Platten (1) identische Form aufweisen, aber abwechselnd um 180° gegeneinander verdreht sind.Plate heat exchanger according to claim 1,
characterized,
that all plates (1) have an identical shape, but are rotated alternately by 180 °. Plattenwärmetauscher nach Anspruch 1,
dadurch gekennzeichnet,
daß die Ringflächen (5) an der einen Seite der Plattenlängsachse entgegengesetzt zu den Ringflächen (9) an der anderen Seite der Plattenlängsachse versetzt sind.Plate heat exchanger according to claim 1,
characterized,
that the annular surfaces (5) on one side of the longitudinal axis of the plate are offset opposite to the annular surfaces (9) on the other side of the longitudinal axis of the plate. Plattenwärmetauscher nach Anspruch 1,
dadurch gekennzeichnet,
daß die beiden genannten Randbereiche (3, 4) jeder Platte plan sind.Plate heat exchanger according to claim 1,
characterized,
that the two edge regions (3, 4) of each plate are flat. Plattenwärmetauscher nach Anspruch 1,
dadurch gekennzeichnet,
daß die beiden Ringflächen (5, 9) der Öffnungen (2) plan sind.Plate heat exchanger according to claim 1,
characterized,
that the two ring surfaces (5, 9) of the openings (2) are flat. Plattenwärmetauscher nach Anspruch 1,
dadurch gekennzeichnet,
daß die Abbiegungen (5a, 9a) etwa senkrecht zu den Ringflächen (5, 9) verlaufen und die Platten einer Kassette jeweils zusammensteckbare Abbiegungen (5a, 9a) aufweisen.Plate heat exchanger according to claim 1,
characterized,
that the bends (5a, 9a) run approximately perpendicular to the ring surfaces (5, 9) and the plates of a cassette each have bends (5a, 9a) which can be plugged together. Plattenwärmetauscher nach Anspruch 6,
dadurch gekennzeichnet,
daß die bezüglich der Abbiegung hinten liegende Platte einer Kassette längere Abbiegungen aufweist, derart, daß die freien Ränder der Abbiegungen in zusammengestecktem Zustand fluchten.Plate heat exchanger according to claim 6,
characterized,
that the rear plate of a cassette with respect to the bend has longer bends, such that the free edges of the bends are aligned when plugged together. Plattenwärmetauscher nach Anspruch 6 oder 7,
dadurch gekennzeichnet,
daß die Platten identisch profiliert, aber hinsichtlich der Richtung der Abbiegungen in zwei Plattentypen unterteilt sind.Plate heat exchanger according to claim 6 or 7,
characterized,
that the plates are identically profiled, but are divided into two types of plates with regard to the direction of the turns. Plattenwärmetauscher nach Anspruch 1,
dadurch gekennzeichnet,
daß die beiden Randbereiche (3, 4) durch ein senkrecht zur Plattenebene umlaufendes Zwischenstück miteinander verbunden sind.Plate heat exchanger according to claim 1,
characterized,
that the two edge areas (3, 4) are connected to each other by an intermediate piece running perpendicular to the plate plane. Plattenwärmetauscher nach Anspruch 1,
dadurch gekennzeichnet,
daß die Verschweißung benachbarter Kassetten unter Weglassung des zweiten Randbereiches (4) durch ein umlaufendes, zwischengelegtes etwa U-förmiges Profil (10) erfolgt, das mit seinen beiden Schenkeln an den voneinander distanzierten Seiten der ersten Randbereiche (3) anliegt und mit diesen durchgehend verschweißt ist.Plate heat exchanger according to claim 1,
characterized,
that the welding of adjacent cassettes takes place with the omission of the second edge region (4) by a circumferential, interposed, approximately U-shaped profile (10), which rests with its two legs on the spaced apart sides of the first edge regions (3) and is welded to them continuously is. Plattenwärmetauscher nach Anspruch 10,
dadurch gekennzeichnet,
daß das Profil (10) ein vorgefertigter Rahmen ist.Plate heat exchanger according to claim 10,
characterized,
that the profile (10) is a prefabricated frame. Plattenwärmetauscher nach Anspruch 1 oder 10,
dadurch gekennzeichnet,
daß die Schweißnähte längs den Abbiegungen (5a, 9a) und längs den Randbereichen (4) oder längs den Randbereichen (3) und Profilen (10) als Stirnnähte ausgebildet sind.Plate heat exchanger according to claim 1 or 10,
characterized,
that the weld seams along the bends (5a, 9a) and along the edge regions (4) or along the edge regions (3) and profiles (10) are designed as front seams.
EP93106729A 1992-07-16 1993-04-26 Welded plate type heat exchanger Expired - Lifetime EP0578933B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4223321 1992-07-16
DE4223321A DE4223321A1 (en) 1992-07-16 1992-07-16 Welded plate heat exchanger

Publications (3)

Publication Number Publication Date
EP0578933A1 true EP0578933A1 (en) 1994-01-19
EP0578933B1 EP0578933B1 (en) 1995-12-06
EP0578933B2 EP0578933B2 (en) 1999-03-24

Family

ID=6463292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93106729A Expired - Lifetime EP0578933B2 (en) 1992-07-16 1993-04-26 Welded plate type heat exchanger

Country Status (5)

Country Link
US (1) US5327958A (en)
EP (1) EP0578933B2 (en)
AT (1) ATE131279T1 (en)
DE (2) DE4223321A1 (en)
ES (1) ES2080554T5 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031682A1 (en) * 1994-05-18 1995-11-23 Tetra Laval Holdings & Finance S.A. Welded plate heat exchanger and method for welding heat transfer plates to a plate heat exchanger
DE19617396A1 (en) * 1996-05-02 1997-11-06 Dornier Gmbh Flow module
WO2000046562A1 (en) * 1999-02-05 2000-08-10 Long Manufacturing Ltd. Self-enclosing heat exchangers with shim plate
EP0992756A3 (en) * 1998-10-09 2000-12-13 Modine Manufacturing Company Heat exchanger, more particularly for gases and liquids
US6397940B1 (en) 1998-06-24 2002-06-04 Alfa Laval Ab Method of joining at least four heat transfer plates to a plate package, and a plate package

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9200213D0 (en) * 1992-01-27 1992-01-27 Alfa Laval Thermal Ab WELDED PLATE HEAT EXCHANGER
US5471913A (en) * 1994-04-21 1995-12-05 Margittai; Thomas B. Apparatus for heating, mixing, and sealing a fluid
SE502638C2 (en) * 1994-05-18 1995-11-27 Tetra Laval Holdings & Finance Flat heat exchangers with permanently joined modules
DK174409B1 (en) * 1998-01-12 2003-02-17 Apv Heat Exchanger As Heat exchanger plate with reinforced edge design
DE19802012C2 (en) * 1998-01-21 2002-05-23 Modine Mfg Co Caseless plate heat exchanger
SE513784C2 (en) * 1999-03-09 2000-11-06 Alfa Laval Ab Permanently joined plate heat exchanger
DE19917761C1 (en) * 1999-12-07 2001-01-18 Peter Rehberg Plate heat exchanger has stacked rectangular heat exchanger plates provided with flow openings at corners for each transfer medium enclosed by flat ring on one side and raised teeth on opposite side of plate
DE19959780B4 (en) * 1999-04-12 2004-11-25 Rehberg, Peter, Dipl.-Ing. Plate heat exchangers
DE19939264B4 (en) * 1999-08-19 2005-08-18 Behr Gmbh & Co. Kg Plate heat exchangers
SE516178C2 (en) * 2000-03-07 2001-11-26 Alfa Laval Ab Heat transfer plate, plate package, plate heat exchanger and the use of plate and plate package respectively for the production of plate heat exchanger
US20020162646A1 (en) 2001-03-13 2002-11-07 Haasch James T. Angled turbulator for use in heat exchangers
US7004237B2 (en) * 2001-06-29 2006-02-28 Delaware Capital Formation, Inc. Shell and plate heat exchanger
SE524783C2 (en) * 2003-02-11 2004-10-05 Alfa Laval Corp Ab Plate package, plate heat exchanger and plate module
SE0303307L (en) * 2003-12-10 2004-10-19 Swep Int Ab Plate heat exchanger
US7624788B2 (en) * 2004-04-22 2009-12-01 State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of The University Of Oregon Heat exchanger
DE102004022433B4 (en) * 2004-05-06 2007-01-04 Joachim Schult Profiled heat transfer plate for a welded heat exchanger
PL1593923T3 (en) * 2004-05-06 2007-05-31 Movi Alluminium S R L Heat exchanger
DE102004032085A1 (en) * 2004-06-28 2006-01-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Compound building element with at least one temperature control channel with a temperature control fluid takes the form of a stack of metal plates with interruption zones forming temperature control channels
CA2477817C (en) * 2004-08-16 2012-07-10 Dana Canada Corporation Stacked plate heat exchangers and heat exchanger plates
JP2006284165A (en) * 2005-03-07 2006-10-19 Denso Corp Exhaust gas heat exchanger
US20070158055A1 (en) * 2006-01-09 2007-07-12 Man Zai Industrial Co., Ltd. Heat dissipating device
US8453721B2 (en) * 2007-01-31 2013-06-04 Tranter, Inc. Seals for a stacked-plate heat exchanger
DE102007063634B4 (en) * 2007-11-26 2009-10-15 Gesmex Gmbh Method for connecting at least two heat exchanger plates
SE534915C2 (en) 2010-06-18 2012-02-14 Alfa Laval Corp Ab Plate heat exchanger and method for manufacturing a plate heat exchanger
EP2604962B1 (en) * 2011-12-13 2014-10-15 Vahterus Oy Plate heat exchanger and method for manufacturing a plate heat exchanger
DE102013213398A1 (en) * 2013-07-09 2015-01-15 Elringklinger Ag Method for connecting a plurality of functional elements
US20150129181A1 (en) * 2013-11-11 2015-05-14 Tranter, Inc. Modular heat exchanger
US11745118B1 (en) 2022-06-02 2023-09-05 Ace Machine Design Llc Mechanical vapor recompression solvent recovery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR76822E (en) * 1959-12-26 1961-12-08 parallel plate countercurrent heat exchanger
FR2010517A1 (en) * 1968-06-06 1970-02-20 Delaney Gallay Ltd Heat exchanger
FR2280871A1 (en) * 1974-08-01 1976-02-27 Chausson Usines Sa Built-up construction heat exchanger - has panels with peripheral support surface and embossed crown sections
EP0347961A1 (en) * 1988-06-20 1989-12-27 Itt Industries, Inc. Plate type heat exchanger

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1601216B2 (en) * 1967-11-03 1971-06-16 Linde Ag, 6200 Wiesbaden TIN PANEL FOR PLATE HEAT EXCHANGER WITH A STACK OF SUCH TIN PANELS
GB2126703B (en) * 1982-09-07 1986-07-09 Apv Int Ltd Plate heat exchanger
US4592914A (en) * 1983-06-15 1986-06-03 James River-Dixie/Northern, Inc. Two-blank disposable container for microwave food cooking
GB8429359D0 (en) * 1984-11-21 1985-01-03 Apv Int Ltd Heat exchanger
US4723601A (en) * 1985-03-25 1988-02-09 Nippondenso Co., Ltd. Multi-layer type heat exchanger
JPH063352B2 (en) * 1987-07-27 1994-01-12 栄産業株式会社 Panel heat exchanger
SE9000712L (en) * 1990-02-28 1991-08-29 Alfa Laval Thermal PERMANENT COMBINED PLATE HEAT EXCHANGER
US5158135A (en) * 1990-06-05 1992-10-27 Zexel Corporation Laminate type heat exchanger
US5125453A (en) * 1991-12-23 1992-06-30 Ford Motor Company Heat exchanger structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR76822E (en) * 1959-12-26 1961-12-08 parallel plate countercurrent heat exchanger
FR2010517A1 (en) * 1968-06-06 1970-02-20 Delaney Gallay Ltd Heat exchanger
FR2280871A1 (en) * 1974-08-01 1976-02-27 Chausson Usines Sa Built-up construction heat exchanger - has panels with peripheral support surface and embossed crown sections
EP0347961A1 (en) * 1988-06-20 1989-12-27 Itt Industries, Inc. Plate type heat exchanger

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031682A1 (en) * 1994-05-18 1995-11-23 Tetra Laval Holdings & Finance S.A. Welded plate heat exchanger and method for welding heat transfer plates to a plate heat exchanger
US5864112A (en) * 1994-05-18 1999-01-26 Alfa Laval Ab Welded plate heat exchanger and method for welding heat transfer plates to a plate heat exchanger
DE19617396A1 (en) * 1996-05-02 1997-11-06 Dornier Gmbh Flow module
DE19617396C2 (en) * 1996-05-02 1998-03-26 Dornier Gmbh Flow module
US5829517A (en) * 1996-05-02 1998-11-03 Daimler-Benz Ag Flow module
US6397940B1 (en) 1998-06-24 2002-06-04 Alfa Laval Ab Method of joining at least four heat transfer plates to a plate package, and a plate package
EP0992756A3 (en) * 1998-10-09 2000-12-13 Modine Manufacturing Company Heat exchanger, more particularly for gases and liquids
WO2000046562A1 (en) * 1999-02-05 2000-08-10 Long Manufacturing Ltd. Self-enclosing heat exchangers with shim plate
WO2000046564A1 (en) * 1999-02-05 2000-08-10 Long Manufacturing Ltd. Self-enclosing heat exchangers

Also Published As

Publication number Publication date
EP0578933B2 (en) 1999-03-24
US5327958A (en) 1994-07-12
DE4223321A1 (en) 1994-01-20
ATE131279T1 (en) 1995-12-15
ES2080554T3 (en) 1996-02-01
EP0578933B1 (en) 1995-12-06
DE59301080D1 (en) 1996-01-18
ES2080554T5 (en) 1999-08-01

Similar Documents

Publication Publication Date Title
EP0578933B1 (en) Welded plate type heat exchanger
DE10118625B4 (en) Wavy lamella with offset for plate heat exchangers
DE69106354T2 (en) SOLDERED HEAT PLATE EXCHANGER.
EP0487931B1 (en) Plate heat exchanger
DE2946804C2 (en)
DE69302212T2 (en) Plate stack for heat exchangers and method for assembling them
DE2109346A1 (en) Plate for plate heat exchangers and tools for its manufacture
DE2951352C2 (en) Flat tube heat exchanger
DE2701633A1 (en) HEAT EXCHANGER
DE1911471A1 (en) Plate heat exchanger
DE69309921T2 (en) HEAT EXCHANGER WITH WELDED PLATES
EP0463298B1 (en) Plate heat exchanger
EP3044531B1 (en) High pressure plate heat exchanger
DE4100940C1 (en)
DE3209240C2 (en) Cross-flow plate heat exchanger
DE1451258A1 (en) Heat exchanger
EP0864837B1 (en) Plate-like heat exchanger
DE1809545A1 (en) Plate heat exchanger
DE29615575U1 (en) Fuel element with debris filter
DE4438393A1 (en) Method for welding two adjacent plates of plate heat exchanger
DE69208072T2 (en) PLATE HEAT EXCHANGER
DE4332730A1 (en) Hollow wall and process for the production thereof
DE2952467C2 (en) Heat exchangers, in particular for cooling the lubricating oil of internal combustion engines
DE4031355C2 (en) Plate heat exchanger
DE3332159A1 (en) METHOD FOR PRODUCING A HEAT EXCHANGER

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: A1

Designated state(s): AT DE ES FR GB IE IT SE

17P Request for examination filed

Effective date: 19940117

17Q First examination report despatched

Effective date: 19940715

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IE IT SE

REF Corresponds to:

Ref document number: 131279

Country of ref document: AT

Date of ref document: 19951215

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

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

Effective date: 19951207

REF Corresponds to:

Ref document number: 59301080

Country of ref document: DE

Date of ref document: 19960118

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2080554

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: ALFA LAVAL AB

Effective date: 19960827

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 19990324

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT DE ES FR GB IE IT SE

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Kind code of ref document: T5

Effective date: 19990602

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: IE

Payment date: 20120419

Year of fee payment: 20

Ref country code: DE

Payment date: 20120417

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20120423

Year of fee payment: 20

Ref country code: FR

Payment date: 20120511

Year of fee payment: 20

Ref country code: GB

Payment date: 20120423

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20120428

Year of fee payment: 20

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

Ref country code: ES

Payment date: 20120423

Year of fee payment: 20

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

Ref country code: AT

Payment date: 20120420

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59301080

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59301080

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20130425

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 131279

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130426

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130709

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130427

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130427

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130425

REG Reference to a national code

Ref country code: IE

Ref legal event code: MK9A

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

Ref country code: IE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130426