EP0045257B1 - Plattenwärmetauscher mit steifer Struktur - Google Patents

Plattenwärmetauscher mit steifer Struktur Download PDF

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Publication number
EP0045257B1
EP0045257B1 EP81401190A EP81401190A EP0045257B1 EP 0045257 B1 EP0045257 B1 EP 0045257B1 EP 81401190 A EP81401190 A EP 81401190A EP 81401190 A EP81401190 A EP 81401190A EP 0045257 B1 EP0045257 B1 EP 0045257B1
Authority
EP
European Patent Office
Prior art keywords
plates
exchanger according
plate
heat exchanger
distribution
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
Application number
EP81401190A
Other languages
English (en)
French (fr)
Other versions
EP0045257A3 (en
EP0045257A2 (de
Inventor
Raymond Berger
Maurice Bouvier De Cachard
Alain Collet
Didier Costes
André Gouzy
Guy Dupuy
Pierre Caunes
Claude Chevrier
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.)
Alusuisse France SA
Alusuisse Lonza France SA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Alusuisse France SA
Alusuisse Lonza France SA
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
Priority claimed from FR8016472A external-priority patent/FR2487495A1/fr
Priority claimed from FR8106641A external-priority patent/FR2503344B2/fr
Application filed by Commissariat a lEnergie Atomique CEA, Alusuisse France SA, Alusuisse Lonza France SA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0045257A2 publication Critical patent/EP0045257A2/de
Publication of EP0045257A3 publication Critical patent/EP0045257A3/fr
Application granted granted Critical
Publication of EP0045257B1 publication Critical patent/EP0045257B1/de
Expired legal-status Critical Current

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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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing 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
    • F28F2230/00—Sealing 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • 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
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives

Definitions

  • the present invention relates to a rigid structure heat exchanger.
  • Heat exchangers are the devices used to pass a heat flow from a first fluid flow, which cools, to a second which heats.
  • the plate exchangers consist of a stack of suitably spaced plates, between which the two flows circulate in an alternate arrangement.
  • To obtain the most efficient heat exchange it is known to adopt the counter-current arrangement of the flows, the speeds in these then being substantially parallel and opposite, but this arrangement makes the constitution of the collection zones quite complex. at the ends of the exchange routes. The less thermally efficient cross-current arrangement is often adopted for this reason.
  • the four collectors for the entry and exit of the two flows, are constituted by the two chimney lines and the two corresponding faces of the flow, where the plates are in pairs in contact.
  • the two flows can be substantially equal in mass and volume and a uniform spacing spacing between plates is then adopted. The explanations below correspond to this case but easily extend to different spacings e i and e 2 for the two flows.
  • the distribution chimneys are preferably of elongated section in the direction of circulation of the fluids from one distribution zone to the other, which makes it possible to obtain large passage sections vis-à-vis -screw of the section corresponding to the thickness between plates.
  • a plate heat exchanger of this type is described in French Patent No. 1,038,859. It describes a heat exchanger for two media circulating against the current. Plates arranged in parallel provide passages for the fluid media. The end parts of these plates are connected by perpendicular transverse conduits which can have, according to a particular embodiment, a pear-shaped cross section.
  • an exchanger of this type does not have a rigid structure. Indeed, a plate of the stack rests on the plate immediately below by its periphery only. There is no intermediate support point of a plate 1 on the lower plate 2 in the exchange zone. Flanges 1 c, 2 c constitute the edges of chimney perforations. The collars 1c are relatively short while the collars 2c are relatively long. A plate 1 therefore rests on the plate 2 which is lower by the periphery of the collar 2c.
  • the exchanger of the invention relates to a plate exchanger which by itself has a rigid structure.
  • the plates of this exchanger have two planar surfaces, an upper planar surface and a lower planar surface.
  • One of the planar surfaces is formed by the plane of the distribution zone while the other planar surface, on the same side of the exchanger is formed by the plane of the edge of the chimney perforations.
  • the plate exchanger of the invention of the type which includes a stack of suitably spaced parallel plates, said plates comprising a central exchange zone and two parallel edges forming by their stack two distributor blocks, the distribution taking place in a block for one space out of two by direct outlet on the face of the stack, and for the other space out of two, by outlet on a chimney line obtained by perforations of elongated shape in the direction of the flow of fluids from one distributor block to the other carried out across the entire stack, is characterized in that the planes of the parallel edges of the plates are offset on either side of the plane of the central zone of exchange, so that when the stacking of the plates is carried out, one of the edges of a plate is in plan-on-plane contact with the edge of the immediately superior plate, while the other edge of this plate that is in contact with the edge of the immediately lower plate, which achieves a so-called “accordion” structure which closes every second space in each distributor block, and in that the edges of the perforations in the chimneys are deformed in
  • the contact of the two plates over a large part of the distribution zone makes it possible to obtain a better robustness of the assembly, in particular when using very thin sheets.
  • the plane of one or two distribution zones is offset from that of the exchange zone, which results in two-to-two contact of these distribution zones, subject to the maintenance of the normal gap between the distribution zone. exchange and the opposite end of each perforation, and subject to the locally raised parts to constitute the walls of the chimneys.
  • the plates are linked two by two by assembling their edges and / or the edges of the chimneys located in contact. An accordion chain is thus formed.
  • the connections are made all around the chimneys. These connections can be obtained by crimping added or stamped rivets, or they can be obtained directly from the plates themselves by bonding pre-coated areas, by welding plastic films deposited on the plates, by welding the plates themselves. - even when made from an appropriate material. You can still use plastic inserts assembled "in situ".
  • Lines of distribution chimneys are thus formed, the passage section of which can be as large as desired, in order to supply the entire stack while allowing a fine distribution of the fluid between the plates.
  • the distribution chimneys open only by their short side which is oriented towards the exchange zone. The rigidity of the stack is thus ensured by the two long sides and by the short side of the opening, the walls of which are parallel to the crushing forces.
  • bosses are formed in the exchange zone.
  • These bosses can be inclined relative to the axis of the plate, in particular oriented alternately, for example at 45 degrees, on either side of the general direction of flow of the gas streams.
  • the height of these bosses can be equal to the spacing pitch of the plates. In this case, each boss then rests on a smooth part of the exchange zone.
  • the height of the bosses can also be equal to the half spacing step of the plates.
  • the plate heat exchanger produced in accordance with the invention has its own rigidity qualities which make it possible to considerably reduce the thickness of the plates used, and consequently their weight.
  • FIG. 1 shows a perspective view of an exchanger 2 produced in accordance with the invention.
  • This exchanger is a static heat recovery exchanger operating between two gas streams circulating against the current. It can be used in particular for air conditioning and for the recovery of heat lost through the ventilation of premises.
  • the exchanger 2 is constituted by a stack of stamped rectangular sheets 4.
  • the sheets 4 are stacked with a spacing pitch e (see Fig. 3) and clamped together to determine two separate circuits in which the fluid streams flow.
  • Each sheet 4 has a central zone 6, called the exchange zone, in which the actual heat exchange takes place, and two distribution zones 8 and 10, located on either side of the exchange zone. 6 in which distribution chains 12 and 14 are formed.
  • These chimneys are formed by stamps of elongated shape, arranged in the direction of flow of the fluids.
  • a first gas stream 16 enters the exchanger via the distribution chimneys 12.
  • the fluid 16 circulates along the exchange zone 6 then leaves the exchanger at 17.
  • a second fluid 18 enters the exchanger 2 by the distribution chimneys 14, circulates along the exchange surface 6 and then leaves the exchanger in 19.
  • the planes of the distribution zones 8 and 10 are offset on either side of the plane of the exchange zone 6 by an amount equal to half the spacing pitch e of the plates 4.
  • the plane of the distribution zone 8 of the cladding 4 is located lower than the plane of the exchange zone 6, while the plane of the distribution zone 10 is on the contrary elevated from it.
  • the stack of the exchanger plates is produced by alternately superimposing plates such as plate 4 and identical plates turned 180 ° around their transverse axis.
  • the distribution zone 8 comes into contact with the distribution zone of the immediately lower plate.
  • the distribution zone 10 will come into contact with the distribution zone of the plate immediately above.
  • the exchange zone 6 comprises elongated bosses inclined on either side with respect to the longitudinal axis of the plate 4.
  • these bosses are inclined at 45 ° on either side of the general direction of flow of the gas veins.
  • the height of these bosses is preferably equal to the spacing pitch e of the plates.
  • bosses 20 on each of the faces of the exchange zone 6, their height being equal to half the spacing step e.
  • the bosses formed on the upper face of a plate thus come into contact after turning, with those of the upper plate.
  • the continuity of the walls parallel to the axis of the crushing forces is thus also ensured.
  • FIG. 2 shows a perspective view of a plate 4 of the exchanger shown in FIG. 1.
  • the exchange zone 6 the distribution zones 8 and 10, the distribution chimneys 12 and 14 and the bosses 20.
  • This figure shows in particular the shape of the distribution chimneys 12 and 14.
  • Elongated openings, respectively 12a and 14a through which the fluids circulate are formed at the top of the stamping.
  • the passage section of exchange chimneys can be as large as desired, which makes it possible to supply the entire stack while retaining a fine distribution of the gas flow.
  • one end of each distribution chimney, respectively 12b and 14b is formed in the exchange zone 6. This arrangement determines an orifice through which the fluid can flow between the zones of exchange of two successive plates.
  • the distribution chimneys 12 and 14 only open by their short side 12b and 14b oriented towards the exchange zone 6.
  • the rigidity of the stack is thus ensured along the long sides and the short side remaining. plates thus come to bear one against the other two by two by the edges 1 2c and 14c of the distribution chimneys 12 and 14.
  • the edge 12c comes into contact with the edge of the distribution chimney of the immediately upper plate.
  • the rim 14c of the distribution chimney 14 comes into contact with that of the immediately lower plate.
  • FIG. 3 a longitudinal section of the plate 4 represented in FIG. 2.
  • the respective heights have been indicated in this figure as a function of the spacing pitch e of the plates, the distribution chimneys 12 and 14 and the bosses 20.
  • the planes of the distribution zones 8 and 10 are offset on either side of the plane of the exchange zone 10 by an amount equal to half the spacing step e of the plates.
  • the height of the distribution chimneys 12 and 14 relative to the plane of the exchange zone 6 is equal to the spacing pitch e.
  • the height of the bosses 20 is equal to the spacing step e.
  • a highly rigid exchanger is thus obtained. This arrangement makes it possible to considerably reduce the thickness of the plates 4 and consequently their weight. In the case of the embodiment described, satisfactory rigidity in all respects was obtained with aluminum sheets 0.2 mm thick.
  • Figure 4 There is shown in Figure 4 a longitudinal section of the exchanger shown in Figure 1.
  • Figure 4a shows a longitudinal section taken along the line AA which passes in the middle of the distribution chimneys.
  • FIG. 4b represents a longitudinal section of this same exchanger taken along the line BB which does not cut the distribution chimneys 12 and 14.
  • the bosses 20 have not been shown in these figures.
  • FIG. 4a makes it possible to see the two separate flow circuits for the fluids 16 and 18.
  • the fluid 16 circulates from right to left, in the figure, to exit at 17 from the exchanger while the fluid 18 circulates against flow of fluid 16, that is to say from left to right to exit at 19 from the exchanger.
  • FIG. 4b shows the connection of the distribution chimneys such as 12 and 14. These connections, carried out all around the chimneys, can be obtained by crimping added or stamped rivets directly from the plates themselves, or by gluing . The manner in which the sealing is achieved between the two gas streams in the distribution zones at the level of the distribution chimneys will be described in more detail with reference to FIGS. 5 to 7.
  • the exchanger 2 produced in accordance with the invention can be placed directly in a single operation in a housing provided with suitable fixing and connection means.
  • the lateral sealing of the plates 4 is obtained by means of a flexible foam sheet or any other suitable known means.
  • the plates of the exchanger are made of aluminum sheet with a thickness of 0.2 mm.
  • Three methods are possible for ensuring the connection of the edges 12c of the distribution chimneys. In FIG. 5, these edges are assembled by gluing. This bonding can be carried out with a quick cold glue. It is also possible to deposit a polyethylene film on one of the faces of the plate. The coated faces of the two successive plates are then bonded and they are placed under a hot press so as to melt the polyethylene film. After cooling, it forms a weld.
  • the latter method is expensive.
  • FIG. 6 shows an attached oblong rivet 30, made of aluminum or plastic
  • FIG. 7 shows a rivet 32 formed in one of the plates during manufacture and consequently integral with the latter.
  • FIGS. 1 to 4 A heat exchanger has been described in FIGS. 1 to 4, the planes of the distribution zones being offset on either side of the plane of the exchange zone by a quantity spread at half the spacing pitch plates.
  • FIGS. 8 and 9 show, in a manner analogous to FIG. 4a, a longitudinal section of a heat exchanger whose planes of the distribution zones are offset by any amount of on either side of the exchange zone plan.
  • each plate has in its distribution zones stamped reliefs of different heights 34, 36, 38 and 40 constituting the chimneys, the edges of the chimneys cooperating with each other.
  • a single distribution zone is provided with a stamped relief 12.
  • the flange of the chimney cooperates with the edge of the opening made in the distribution zone.
  • the invention thus described makes it possible to constitute counter-current exchangers with integrated collectors obtained by stacking stamped plates, in which the collectors can take up a large section relative to the section of passage of an elementary flow between two plates. , which allows the stacking of many plates and obtaining very compact one-piece exchangers for given applications. They are used in particular for air conditioning of premises, with small pressure differences from one flow to another, which makes it possible to form the plates of a thin metal sheet, material mainly envisaged for assemblies which have been described.
  • the exchanger 2 shown in perspective in Figure 10 is constituted by a stack of stamped rectangular sheets 4.
  • the sheets 4 are stacked with a spacing step 2 .0t clamped together to determine two separate circuits in which the fluid streams flow.
  • a first gas stream 16 enters the upper part of the exchanger.
  • the gas stream 16 circulates along the exchange zone of the exchanger, then emerges at 17.
  • a second fluid 18 enters the upper part of the exchanger via the distribution chimneys 14, circulates along the surface d exchange then spring from the exchanger according to arrow 19.
  • At the upper part of the exchanger 2 are mounted two distributors 16a and 18a which distribute the fluids 16 and 18 inside the respective distribution chimneys.
  • the lateral sealing of the plates 4 is obtained by means of a foam 52 with closed porosity.
  • Longitudinal profiles such as 54 are embedded in the foam 52 with closed porosity. These profiles are visible more particularly in FIG. 11.
  • the foam 52 can be an epoxy resin, a prepolymer foam or a phenolic foam.
  • the insulation 52 ensures the 'thermal insulation and total sealing between the veins 16 and 18, thanks to the two components of this foam which produces closed cells. This is an important characteristic, because the qualification of a heat exchanger is linked to the seal between the two gas streams circulating against the current. Thanks to the reinforcement by the sections 54, it is possible to eliminate the metal casing of the prior art. This results in a lowering of the cost price of the exchanger in which the casing intervened for a large fraction.
  • the coating 52 constitutes at the same time the packaging for the purposes of shipping the exchanger.
  • FIG. 12 shows an alternative embodiment in which a texture 56 has been embedded in the foam 52.
  • the texture 56 may be metallic or plastic. It improves the rigidity of the whole.
  • the coating 52 can be produced either by injection or by molding.
  • thermosetting foam in an exemplary embodiment, was used which became semi-hard in a very short time.
  • the characteristics of this foam are indicated in the appendix below.
  • This foam is deposited using a gun that automatically mixes the two components. To isolate a face, it suffices to place vertically 3 cm from the wall of the exchanger a rigid panel which occupies the surface of this wall. In this panel are made cylindrical openings of 8 mm in diameter which are used both for injecting the foam and for evacuating the air when the foam is injected. After about 60 seconds, this thermosetting foam is dry. It only remains to remove the panel.
  • the side wall of the exchanger is insulated.

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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 (12)

1. Platten-Wärmetauscher mit einem Stapel aus in geeigneten gegenseitigen Abständen parallel zueinander angeordneten Platten (4), welche jeweils einen mittleren Austauschbereich und zwei parallele Randbereiche (8, 10) aufweisen, welche aufgrund der gestapelten Anordnung zwei Verteilerblöcke bilden, wobei die Verteilung in einem Block für jeweils einen von zwei Hohlräumen durch direkte Beaufschlagung einer Fläche der gestapelten Anordnung und für den anderen der jeweils zwei Hohlräume durch Durchströmung einer Reihe von Durchlässen (12, 14) erfolgt, welche einander gegenüberliegend in dem gesamten Stapel gebildet sind und eine in Richtung der Strömung eines Fluids von einem Verteilerblock zum anderen verlängerte Form aufweisen, dadurch gekennzeichnet, dass die Ebenen der parallelen Randbereiche der Platten gegenüber dem mittleren Austauschbereich zur einen und anderen Seite hin versetzt sind, so dass beim Aufeinanderstapeln der Platten ein Randbereich einer Platte in Flächenberührung mit dem Randbereich der unmittelbar darüber angeordneten Platte und der andere Randbereich der betreffenden Platte in Flächenberührung mit dem Randbereich der unmittelbar darunter angeordneten Platte steht, so dass ein sogenanntes «Ziehharmonikagebilde» entsteht, welches jeweils einen von zwei Hohlräumen in jedem Verteilerblock umschliesst, und dass die Ränder der Öffnungen (12a, 14a) der Durchlässe (12, 14) in der der Versetzung des Randbereiches gegenüber dem mittleren Bereich entgegengesetzten Richtung verformt sind, so dass sie in Berührung mit dem Rand der Öffnung des Durchlasses der benachbarten Platte in Berührung kommen, wobei sich die Flächenberührung der parallelen Verteiler-Randbereiche auf die zwischen den Durchlässen liegenden Bereiche erstreckt, nicht jedoch auf den an den mittleren Austauschbereich (6) angrenzenden Bereich (12b,14b).
2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass die mittleren Bereiche (6) Buckel (20) aufweisen, deren Höhe gleich dem Abstand zwischen den Platten ist und welche in einem ebenen Bereich mit der einen oder anderen benachbarten Platte zusammenwirken.
3. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass die mittleren Bereiche (6) Buckel (20) aufweisen, deren Höhe kleiner ist als der Abstand zwischen den Platten und welche mit anderen Buckeln benachbarter Platten zusammenwirken.
4. Wärmetauscher nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, dass die Buckel (20) längliche Form haben und in bezug auf die Hauptströmungsrichtung schräg angestellt sind.
5. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass die Verformung der Ränder der Durchlässe (12a, 14a) durch Tiefziehen erzielt ist, wobei entlang dem Umfang der Öffnung ein gegenüber der Ebene der Austauschbereichs (6) versetzter ebener Randstreifen geformt ist, wodurch die Flächenberührung zwischen den beiden benachbarten Platten gewährleistet ist.
6. Wärmetauscher nach Anspruch 5, dadurch gekennzeichnet, dass die ebenen Randstreifen entlang dem Umfang der Durchlässe (12a, 14a) jeweils zu zweit durch zusammengebördelte Verbindungsleisten (30) zusammengehalten sind.
7. Wärmetauscher nach Anspruch 5, dadurch gekennzeichnet, dass die ebenen Randstreifen entlang dem Umfang der Durchlässe (12a, 14a) durch Kleben zu zweit miteinander verbunden sind.
8. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass die Verformung der Ränder der Durchlässe (12a, 14a) durch Tiefziehen erzielt ist, wobei jeweils wenigstens ein aufrecht stehender Rand geformt ist, welcher zum Verbinden einander benachbarter Platten einsteckbar und falzbar ist.
9. Wärmetauscher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Abstand zwischen benachbarten ebenen Platten (4) im Austauschbereich im gesamten Stapel konstant ist.
10. Wärmetauscher nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass er eine seitliche Isolierung (52) der Platten (4) aufweist, welche aus einem geschlossenzelligen Schaumstoff mit in diesem eingebetteten Verstärkungsprofilen (54) gebildet ist.
11. Wärmetauscher nach Anspruch 10, dadurch gekennzeichnet, dass in den Schaumstoff (52) ausserdem ein Gewebe (56) aus Metall oder Kunststoff eingebettet ist.
12. Wärmetauscher nach einem der Ansprüche 10 und 11, dadurch gekennzeichnet, dass der geschlossenzellige Schaumstoff (52) aus der Epoxidharze, Prepolymer-Schaumstoffe und Phenol-Schaumstoffe umfassenden Gruppe gewählt ist.
EP81401190A 1980-07-25 1981-07-24 Plattenwärmetauscher mit steifer Struktur Expired EP0045257B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8016472A FR2487495A1 (fr) 1980-07-25 1980-07-25 Echangeur de chaleur a plaques comportant des cheminees de distribution allongees, orientees dans le sens des veines gazeuses
FR8016472 1980-07-25
FR8106641A FR2503344B2 (fr) 1981-04-02 1981-04-02 Echangeur de chaleur a plaques dans lequel l'etancheite laterale des plaques est assuree par une mousse a porosite fermee
FR8106641 1981-04-02

Publications (3)

Publication Number Publication Date
EP0045257A2 EP0045257A2 (de) 1982-02-03
EP0045257A3 EP0045257A3 (en) 1982-02-10
EP0045257B1 true EP0045257B1 (de) 1984-01-25

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EP81401190A Expired EP0045257B1 (de) 1980-07-25 1981-07-24 Plattenwärmetauscher mit steifer Struktur

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Country Link
US (1) US4407359A (de)
EP (1) EP0045257B1 (de)
DE (1) DE3162034D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19723878B4 (de) * 1997-06-06 2007-10-25 Behr Gmbh & Co. Kg Wärmeübertrager

Families Citing this family (25)

* Cited by examiner, † Cited by third party
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EP0045257A2 (de) 1982-02-03
DE3162034D1 (en) 1984-03-01
US4407359A (en) 1983-10-04

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