EP0495184B1 - Echangeur de chaleur à plaques à écoulement à contre-courant - Google Patents

Echangeur de chaleur à plaques à écoulement à contre-courant Download PDF

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Publication number
EP0495184B1
EP0495184B1 EP91120116A EP91120116A EP0495184B1 EP 0495184 B1 EP0495184 B1 EP 0495184B1 EP 91120116 A EP91120116 A EP 91120116A EP 91120116 A EP91120116 A EP 91120116A EP 0495184 B1 EP0495184 B1 EP 0495184B1
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EP
European Patent Office
Prior art keywords
plates
plate
individual
another
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91120116A
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German (de)
English (en)
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EP0495184A1 (fr
Inventor
Werner Deibl
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.)
Balcke Duerr AG
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Balcke Duerr AG
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Application filed by Balcke Duerr AG filed Critical Balcke Duerr AG
Publication of EP0495184A1 publication Critical patent/EP0495184A1/fr
Application granted granted Critical
Publication of EP0495184B1 publication Critical patent/EP0495184B1/fr
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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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart

Definitions

  • the invention relates to a plate heat exchanger for countercurrent media, consisting of shaped single plates, which are connected to one another to form a flow channel for the plate pairs forming a medium, which in turn are connected to form a plate stack and each form a flow channel for the other medium, whereby the inflow and outflow cross-section of each channel is offset diagonally to one another in the longitudinal direction of the plate, and the inflow and outflow cross-sections of the channels for the two media lie next to one another, but are offset by half the height of the inflow and outflow cross-section of the channels.
  • Such plate heat exchangers which correspond in principle to the plate heat exchangers known from DE-A-37 10 823, are used for example in environmental technology and can also be designed for large volume flows of the media involved in the heat exchange, whereby these media need not only be gaseous media, since there are cases in which the heat exchange between liquids or between a gas and a liquid should take place.
  • the individual plates are therefore made of plastic or stainless steel; Furthermore, versions made of normal steel sheet are known, but this is provided with a corrosion protection layer made of plastic or enamel. While single plates made of plastic or stainless steel can be welded together with a higher technical effort, this is not possible with single plates provided with a corrosion protection layer without destroying this protective layer in the area of the weld seams. In the known plate heat exchangers, a different type of connection must be selected here, for example gluing or clamping, preferably with the interposition of seals.
  • the invention has for its object to develop a plate heat exchanger of the type described in such a way that a reliable and permanent seal both between the individual plates and between the plate pairs, taking into account the above-mentioned temperature stresses with little technical and manufacturing effort results.
  • each individual plate is formed in connection with and parallel to its edges running in the longitudinal direction of the plate, at which it is connected to the adjacent individual plate to form a pair of plates, with a contact surface which is opposite the edge is offset by half the height of a pair of plates and at which the individual plates of adjacent plate pairs are connected to one another, and that the individual plates forming a plate stack at their transverse edges lying in the region of the inflow and outflow of the two media are at a partial length with the individual plate belonging to the plate pair and are connected over the remaining part length to the single plate of the adjacent plate pair.
  • contact surfaces according to the invention By designing such contact surfaces according to the invention, it is also possible in series production in a simple manner to reliably and permanently connect both the individual plates to plate pairs and the plate pairs to form a plate stack, it also being possible to first connect in the area of the contact surfaces according to the invention and only then make the connection on the longitudinal edge of the individual panels. There are defined contact surfaces between the individual plates for both connections, so that a seal that is tailored to the respective application and to the plate material can always be selected. Furthermore, there are two rows of side-by-side inflow and outflow openings for the media guided in countercurrent to one another.
  • the configuration according to the invention is also suitable for individual plates provided with a corrosion protection layer.
  • the openings formed by the height-offset contact surfaces in the inflow and outflow region of the plate stack are closed according to a further feature of the invention, so that there is a technically simple supply and discharge of the media flowing through the plate heat exchanger on opposite sides of the plate stack.
  • the plate pairs and / or the individual plates can, according to the invention, be welded to one another and / or sealed together at their contact surfaces or edges.
  • the gas or liquid-tight connection can therefore not only be achieved by welding or gluing, i.e. done positively, but also non-positively in that the individual plates of the plate stack are pressed against each other, preferably by using tie rods and end plates.
  • Both in the form-fitting connection, i.e. by welding or gluing, as well as in the non-positive connection of the individual plates it can be advantageous to provide suitable seals in the area of the edges and / or contact surfaces.
  • the same type of connection is preferably selected in the area of the transverse edges to be connected. However, it may also be sufficient to effect the connection of the individual plates in the region of their transverse edges due to the dimensional stability of the individual plates as a result of their connection at the longitudinal edges and contact surfaces solely by inserting seals.
  • the individual plates are made of plastic or stainless steel, it is proposed according to a further feature of the invention to connect the individual plates to one another at least on their longitudinal edges and contact surfaces by roll seam welding. If coated individual plates are used to form the plate stack, according to the invention these can be uncoated at the longitudinal edges and can therefore be welded to one another here. In both cases, it is possible to insert seals between the individual plates in addition to the welding.
  • the inflow and outflow cross-section of the channels will be the same for the two media participating in the heat exchange, in particular if the volumes of the two media participating in the heat exchange approximately correspond to one another.
  • the width of these openings formed by the transverse edges of the individual plates is the same.
  • the inflow and outflow cross sections of the two different channels through which the two media flow in countercurrent can also have a different size if the volume flows of the two media participating in the heat exchange differ greatly from one another.
  • the inflow and outflow cross sections formed by the transverse edges of the individual plates have a different width at the same height.
  • FIGS. 1 and 2 shows schematically and in perspective the plate stack S of a plate heat exchanger, which is otherwise not shown, for media conducted in countercurrent.
  • This plate stack S consists of a plurality of identical, shaped individual plates 1, which are each connected to form a plate pair P.
  • Each individual plate 1 comprises a base 11 which lies in a different plane from the longitudinal edges 12.
  • each individual plate 1 is each formed with a contact surface 13 which is offset in height from the longitudinal edges 12.
  • the offset between the contact surface 13 and the associated longitudinal edge 12 is twice as large as the offset between the longitudinal edges 12 and the bottom 11; the bottom 11 is therefore located in the middle between the plane of the longitudinal edges 12 and the plane of the contact surfaces 13.
  • transverse edges 14a and 14b which in height, ie perpendicular to the surface of the base 11 are offset from one another by the same amount as the planes in which the longitudinal edges 12 on the one hand and the contact surfaces 13 on the other hand.
  • the transverse edges 14a and 14b lie diagonally opposite one another.
  • plate pairs P are formed according to the lower representation in FIG. 1 by connecting a single plate 1 to a single plate 1 rotated about its longitudinal axis at the longitudinal edges 12. 1 and 2, five complete plate pairs P1 to P5 are shown, with a single plate 1 being arranged on the uppermost plate pair P5 and another single plate 1 is located at a greater distance above this single plate 1 arranged on the plate pairs P.
  • the plate pairs P are now connected in the area of the contact surfaces 13 to form a plate stack S, there are alternately superimposed channels in which flow flows in the opposite direction for the two media participating in the heat exchange. While one medium flows in the channels which are formed by the plate pairs P, the other medium flows in the channels which result from the joining of the plate pairs P to the plate stack S.
  • the lying in the plane of the longitudinal edges 12 transverse edges 14a of the individual plates 1 here form the inlet openings E1 and the outlet openings A1 of the channels for the medium flowing between the plate pairs P.
  • the extending in the plane of the contact surfaces 13 transverse edges 14b of the individual plates 1 form the inlet openings E2 or the outlet openings A2 for the other medium which flows between the individual plates 1 of each pair of plates in the opposite direction.
  • the inlet openings E1 for the first medium next to the outlet openings A2 for the other medium each offset by half a height of a pair of plates P.
  • FIG. 2 The front view shown in Fig. 2 of the left part of the plate stack S shown in perspective in Fig. 1 shows that the plate pairs P1 to P5 can be produced in a simple manner in that the individual plates 1 are connected together at their longitudinal edges 12.
  • the connection of the plate pairs P created in this way to a plate stack S takes place in an equally simple manner in that adjacent individual plates 1 of the plate pairs P are connected to one another in the region of the abutting contact surfaces 13.
  • the transverse edges 14a and 14b of adjacent individual plates 1 are connected in accordance with FIG. 1.
  • lateral openings O result on each end face of the plate stack S, each of which is connected to the flow channel which is formed by the individual plates 1, which are connected to form a plate pair P, for the one medium.
  • these openings O are closed in a suitable manner.
  • the individual plates 1 lie flat on one another both in the region of their longitudinal edges 12 and in the region of their contact surfaces 13.
  • the connection of the individual plates 1 can be done in a simple manner by welding, preferably roller seam welding.
  • Such a roll seam welding can be carried out not only in the case of individual plates 1 made of plastic or stainless steel, but also in the case of individual plates 1 provided with a corrosion protection layer, if these individual plates 1 are uncoated in the outer region of their longitudinal edges 12, so that they are welded here without destroying the corrosion protection layer can be. In this case, however, it is necessary to connect the individual plate pairs P to a plate stack S in a different way.
  • the assembly of a plate stack S from individual plates 1 by welding can be simplified in that adjacent individual plates 1 are welded together first in the area of their contact surfaces 13 and only then in the area of their longitudinal edges 12.
  • at least one roller seam weld can be carried out in a particularly simple manner in the area of the contact surfaces 13 and longitudinal edges 12.
  • modified individual plates 1 are used. These are provided with groove-like depressions 15 both in the region of their longitudinal edges 12 and transverse edges 14a and 14b and in the region of their contact surfaces 13. These recesses 15 form cavities for receiving a sealant or seals 2.
  • Such seals 2 can be used not only in addition to welding the individual plates 1 on their contact surfaces, but also as an alternative to such welds if the individual plates 1 of a plate stack S are on others Be sealed together with their contact surfaces.
  • 7 shows, using a schematic exemplary embodiment, that the plate stack S can also be formed in that the individual plates 1 are clamped between a base plate 3 and a cover plate 4 with the aid of tie rods 5. In this case, welding of the individual plates 1 to plate pairs P or welding of adjacent plate pairs P to one another can be dispensed with.
  • openings O resulting from the additional contact surfaces 13 in the end faces of the plate stack S can be closed in a simple manner.
  • plugs 6 are shown which are inserted into these openings O.
  • the openings O can also be closed in a different way, for example by welding or pressing.
  • the transverse edges 14a and 14b of the individual plates 1 are of approximately the same size, so that there are approximately the same size inlet and outlet openings for the two media flowing in countercurrent, it is of course also possible to use a different one Volume flow of the two media participating in the heat exchange to take into account by changing the ratio of the lengths of the transverse edges 14a and 14b to each other.
  • the distances between the planes in which the contact surfaces 13, the bottoms 11 and the longitudinal edges 12 lie must also be changed in accordance with the length ratio of the transverse edges 14a and 14b. In this case, however, it is necessary to use two differently shaped individual plates 1 to build up a plate stack S.

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  • 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)

Claims (8)

  1. Echangeur de chaleur à plaques pour des milieux circulant à contre-courant, composé de plaques individuelles (1) qui sont formées à la presse et reliées les unes aux autres pour obtenir des paires de plaques (P) qui forment un canal d'écoulement destiné à l'un des milieux, qui, pour leur part, sont reliées les unes aux autres pour former une pile de plaques (S) et qui forment entre elles un canal d'écoulement destiné à l'autre milieu, la section d'entrée et la section de sortie de chaque canal étant décalées l'une par rapport à l'autre en diagonale dans le sens longitudinal des plaques, et les sections d'entrée et de sortie des canaux destinés aux deux milieux étant disposées côte à côte, mais décalées l'une par rapport à l'autre de la moitié de la hauteur de la section d'entrée ou de la section de sortie des canaux, caractérisé en ce que chaque plaque individuelle (1) comporte, dans le prolongement et parallèlement à ses bords (12) qui s'étendent dans son sens longitudinal et par lesquels elle est reliée à la plaque individuelle (1) voisine pour former une paire de plaques (P), une surface d'appui (13) qui, par rapport au bord (12), est décalée de la moitié de la hauteur d'une paire de plaques (P) et au niveau de laquelle sont assemblées les plaques individuelles (1) des paires de plaques voisines (P), et en ce qu'au niveau de leurs bords transversaux (14a, 14b) situés dans la zone d'entrée ou de sortie des deux milieux, les plaques individuelles (1) formant une pile de plaques (S) sont reliées, sur une longueur partielle, avec la plaque individuelle (1) appartenant à la paire de plaques (P) et, sur la longueur partielle restante, avec la plaque individuelle (1) de la paire de plaques (P) voisine.
  2. Echangeur de chaleur à plaques selon la revendication 1, caractérisé en ce que les ouvertures (O) formées par les surfaces d'appui (13) décalées en hauteur et situées dans les zones d'entrée et de sortie de la pile de plaques (S) sont fermées.
  3. Echangeur de chaleur à plaques selon les revendications 1 et 2, caractérisé en ce que, au niveau de leurs surfaces d'appui (13) ou de leurs bords (12, 14a, 14b), les paires de plaques (P) et/ou les plaques individuelles (1) peuvent être assemblées entre elles par soudage et/ou reliées entre elles de manière étanche.
  4. Echangeur de chaleur à plaques selon au moins une des revendications 1 à 3, caractérisé en ce que les plaques individuelles (1) sont assemblées par soudage à la molette au niveau d'au moins leurs bords longitudinaux (12) et de leurs surfaces d'appui (13).
  5. Echangeur de chaleur à plaques selon au moins une des revendications 1 à 3, caractérisé en ce qu'en cas d'emploi de plaques individuelles revêtues (1), les bords longitudinaux (12) ne sont pas revêtus et sont assemblés par soudage.
  6. Echangeur de chaleur à plaques selon la revendication 4 ou 5, caractérisé en ce que, en plus de la soudure, des joints (2) sont insérés entre les plaques individuelles (1).
  7. Echangeur de chaleur à plaques selon au moins une des revendications 1 à 6, caractérisé en ce que les plaques individuelles (1) ou les paires de plaques (P) d'une pile de plaques (S) sont reliées par solidarisation mécanique, de préférence au moyen de tirants (5) s'étendant entre des plaques d'extrémité (3, 4), au niveau des bords longitudinaux et transversaux (12, 14a, 14b) ainsi qu'au niveau des surfaces d'appui (13).
  8. Echangeur de chaleur à plaques selon au moins une des revendications 1 à 7, caractérisé en ce que, dans la zone des surfaces d'appui (13) et/ou des bords longitudinaux (12) et/ou des bords transversaux (14a, 14b), sont ménagés des creux (15) pour y loger des joints (2) ou une masse d'étanchéité.
EP91120116A 1991-01-15 1991-11-26 Echangeur de chaleur à plaques à écoulement à contre-courant Expired - Lifetime EP0495184B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4100940 1991-01-15
DE4100940A DE4100940C1 (fr) 1991-01-15 1991-01-15

Publications (2)

Publication Number Publication Date
EP0495184A1 EP0495184A1 (fr) 1992-07-22
EP0495184B1 true EP0495184B1 (fr) 1994-12-14

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ID=6423019

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EP91120116A Expired - Lifetime EP0495184B1 (fr) 1991-01-15 1991-11-26 Echangeur de chaleur à plaques à écoulement à contre-courant

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EP (1) EP0495184B1 (fr)
AT (1) ATE115713T1 (fr)
DE (2) DE4100940C1 (fr)
ES (1) ES2067838T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340849C3 (de) * 1993-12-01 2000-09-14 Schilling Heinz Kg Plattenwärmeaustauscher in Modulbauweise zum rekuperativen Wärmeaustausch im Gegenstromprinzip zwischen gasförmigen Medien
US9546825B2 (en) 2012-04-23 2017-01-17 Kelvion Phe Gmbh Plate heat exchanger

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142177C2 (de) * 1991-12-20 1994-04-28 Balcke Duerr Ag Plattenwärmetauscher
DE9115813U1 (de) * 1991-12-20 1992-02-20 Balcke-Dürr AG, 4030 Ratingen Plattenwärmetauscher
DE4239049C1 (de) * 1992-11-20 1993-10-14 Balcke Duerr Ag Plattenwärmetauscher
US5469914A (en) * 1993-06-14 1995-11-28 Tranter, Inc. All-welded plate heat exchanger
DE19510847C2 (de) * 1995-03-17 2002-11-21 Michael Rehberg Plattenwärmetauscher
AT404877B (de) * 1997-05-30 1999-03-25 Wagner Wilfried Gegenstrom-plattenwärmetauscher
EP2657635B1 (fr) * 2012-04-23 2015-06-10 GEA Ecoflex GmbH Echangeur thermique à plaques
EP2703765B1 (fr) * 2012-08-27 2017-10-25 Kelvion PHE GmbH Système d'échangeur à plaques

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4027940A1 (de) * 1990-09-04 1993-03-04 Balcke Duerr Ag Plattenwaermetauscher

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB217593A (en) * 1923-06-13 1924-10-30 Georges Marie Gerouille De Bea Improvements in or relating to heat exchangers
DE1259362B (de) * 1959-06-29 1968-01-25 Joachim Beushausen Waermetauscher mit plattenartigen Waermetauschwaenden aus leicht biegsamen Kunststoff-Folien
DE3152944C2 (de) * 1981-08-14 1987-05-07 Ostap Aleksandrov Korobchansky Platten-Wärmeübertrager
DE3710823A1 (de) * 1987-04-01 1988-10-13 Bavaria Anlagenbau Gmbh Verfahren zur herstellung geschweisster plattenwaermetauscher, insbesondere kreuzstrom-plattenwaermetauscher
FR2638226B1 (fr) * 1988-10-24 1991-05-17 Packinox Sa Echangeur a plaques
DE3844213A1 (de) * 1988-12-29 1990-07-05 Gea Ahlborn Gmbh & Co Waermeaustauscher

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4027940A1 (de) * 1990-09-04 1993-03-04 Balcke Duerr Ag Plattenwaermetauscher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340849C3 (de) * 1993-12-01 2000-09-14 Schilling Heinz Kg Plattenwärmeaustauscher in Modulbauweise zum rekuperativen Wärmeaustausch im Gegenstromprinzip zwischen gasförmigen Medien
US9546825B2 (en) 2012-04-23 2017-01-17 Kelvion Phe Gmbh Plate heat exchanger

Also Published As

Publication number Publication date
DE4100940C1 (fr) 1991-11-21
ES2067838T3 (es) 1995-04-01
ATE115713T1 (de) 1994-12-15
EP0495184A1 (fr) 1992-07-22
DE59103899D1 (de) 1995-01-26

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