EP1279916B1 - Plate heat exchanger - Google Patents
Plate heat exchanger Download PDFInfo
- Publication number
- EP1279916B1 EP1279916B1 EP20010118092 EP01118092A EP1279916B1 EP 1279916 B1 EP1279916 B1 EP 1279916B1 EP 20010118092 EP20010118092 EP 20010118092 EP 01118092 A EP01118092 A EP 01118092A EP 1279916 B1 EP1279916 B1 EP 1279916B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- successive
- individual
- embossings
- plates
- 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
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
Definitions
- the invention relates to a plate evaporator from individual plates, the trough-shaped and in several parallel rows evenly over the Distributed embossing plate surface are provided, the individual plates on their edges running transversely to the groove-shaped embossments Plate pairs and these plate pairs along the other, in Embossing edges of the individual plates with the respective next pair of plates are connected to a stack of plates, and wherein the Flow channels for one of the two involved in the evaporation process Medium wavy between each connected to a pair of plates Single plates, and for the other medium straight between successive pairs of plates are formed.
- the invention is constructively based on one from DE 43 43 399 C2 known, composed of mutually parallel individual plates Plate heat exchanger.
- Two individual plates form a plate pair with one in between, wavy channel for the one at the heat exchange involved medium.
- - By joining the plate pairs into one Plate stacks result between the individual plates lying against each other adjacent plate pairs of tubular channels for the other on Medium involved in heat exchange.
- tubular channels are based on the special embossing structure of the individual plates. These are provided with groove-shaped embossings, the Embossments of adjacent rows are offset from one another in the longitudinal direction.
- the plate heat exchanger according to DE 43 43 399 is used for evaporation processes C2 can only be used to a limited extent. Those between the plates are problematic Tubular channels running adjacent pairs of plates. When using the Heat exchanger as an evaporator, the tubular channels tend to one Clogging, but at least to settling of solids or particles in the gaps delimiting the tubular channels. A cleaning of the Plate heat exchanger must therefore be chemical, mechanical Cleaning techniques fail. This is particularly disadvantageous when using the Heat exchanger in the processing of products of the food industry, with increased hygiene requirements.
- the invention has for its object to provide a less prone to contamination and at the same time easier to clean plate evaporator.
- Such a plate evaporator offers improved cleaning options Sides of the straight extending flow channels. These flow channels are not just tubular, they are complete, continuous levels, which means cleaning with mechanical Detergent is possible without narrowing, gaps, etc. uncleaned stay.
- the plate evaporator can also be used for processes that require absolute sterility after cleaning, e.g. B. certain Applications in the food industry. In the milk processing industry z. B. can none when using the plate evaporator according to the invention Place pulp particles in constrictions or gaps. Form such pulp particles a constant source of infection in the processing of dairy products.
- the two are one Plate pair of connected individual plates by spot welding to each other connected. This enables a high compressive strength to be achieved, so that the plate evaporator even in the case of a high differential pressure between the Pressing the two media can be used.
- the spacers are part of a slotted plate, each slot being in Embossing direction extending, open edges of the two to a pair of plates connected individual plates gap-free, and the areas between successive slots form the spacers.
- the width of the areas between successive slits of the slotted plate therefore causes the Distance of the plate pairs. In this way, this distance can be easily Adhere to means, installation errors when assembling the plate evaporator are avoided.
- the gutter-shaped embossments have a rectangular shape in plan view that the Embossing adjacent rows by half the length of the individual embossing are offset in the longitudinal direction to each other, and that the locations of the Spot welding in the middle of the first single plate of the plate pair between two successive impressions of the same series, and in the second single plate of the plate pair on the continuous web between two successive rows of embossments are located.
- the pressure behavior of the plate evaporator can also be Attach additional spot welds, the locations of these additional spot welds on the second single plate of the plate pair in the middle between two successive impressions of the same row, and at the first single plate of the plate pair on the continuous web between two successive rows of embossments are located.
- FIG. 1 on the basis of a plate stack formed by five plate pairs P.
- Plate heat exchanger shown consists of identical individual plates 1, 2 which are mirror images of each other to form a pair of plates P. This Connection takes place on the longitudinal edges 3 of the individual plates 1, 2 and welding spots 4.13 evenly distributed over the plates. Between each a plate pair P forming individual plates 1, 2 results in a wavy extending channel K1 for the one participating in the evaporation process Medium M1, namely a hot gas stream. This wavy course of the Channel K1 can be seen in particular in the sectional view in FIG. 2.
- Figure 1 shows that the assembled from the individual plates 1 and 2 Plate pairs P to form the plate stack 5 on their transverse to the Longitudinal edges 3 extending edges 7 are connected to each other indirectly via a slotted plate 8.
- the slotted plate 8 is parallel with several provided to each other, slit-shaped recesses 9, each Recess 9 receives the open edge 7 of a pair of plates P flush.
- figure 1 also shows that the two individual plates 1 forming a pair of plates P. and 2 in the area of their edge 7 with a spread over the entire width of the plate extending widening 10 is provided so as to ensure a good inflow of To enable medium M1. This widening of the edge 7 fits almost flush into the respective slot-shaped recess 9 of the slot plate 8.
- connection of the edges 7 with the respective recesses 9 of the Slotted plate 8 is made by welding along these edges.
- the between the recesses 9 arranged parallel areas of the slotted plate 8 serve here as a spacer 10 and determine the distance between each Specify plate pair P and the subsequent plate pair P.
- this spacer 10 of the slotted plate 8 the width of the flat flow channel K2 for the second medium M2, which in the straight flow direction between successive pairs of plates flows through.
- Each individual plate 1, 2 is with several parallel rows in the direction of flow of the medium M2, channel-shaped embossments 12 are provided.
- the Embossments 12 of adjacent rows are offset from one another in the longitudinal direction. This results in a pair of plates P between each other forming individual plates 1, 2 flat supports. Form these supports Support fields evenly distributed over the entire surface of the individual panels small size, so that even with a higher overpressure in the channels K2 achieved reliable support of the individual plates of a plate pair P. becomes. Even at high differential pressures there are no permanent deformations Fear single plates.
- the embossments 12 have a length that is approximately twice to three times the width of the embossing. Overall, the embossments 12 form a top view a pattern similar to masonry. The embossments of neighboring rows are by half the length of the individual embossments in the longitudinal direction to one another added.
- the connection of the two individual plates 1, 2 to a pair of plates P takes place except the welding along the longitudinal edges 3 additionally by the Spot welds 13.
- Corresponding Spot welds are preferably reversed between successive embossings on the second single plate 2, and accordingly on the continuous web between two successive Rows of embossments of the first single plate 1.
- the spot welds 13 ensure the stability of the Plate pairs P and in this way for a constant Flow cross-section of channels K2.
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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)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Description
Die Erfindung betrifft einen Plattenverdampfer aus Einzelplatten, die mit rinnenförmig gestalteten und in mehreren parallelen Reihen gleichmäßig über die Plattenfläche verteilten Prägungen versehen sind, wobei die Einzelplatten an ihren quer zu den rinnenförmigen Prägungen verlaufenden Rändern miteinander zu Plattenpaaren und diese Plattenpaare entlang den jeweils anderen, in Prägungsrichtung verlaufenden Rändern der Einzelplatten mit dem jeweils nächsten Plattenpaar zu einem Plattenstapel verbunden sind, und wobei die Strömungskanäle für das eine der beiden am Verdampfungsprozeß beteiligte Medium wellenförmig zwischen jeweils zu einem Plattenpaar verbundenen Einzelplatten, und für das andere Medium gerade verlaufend zwischen aufeinanderfolgenden Plattenpaaren gebildet sind.The invention relates to a plate evaporator from individual plates, the trough-shaped and in several parallel rows evenly over the Distributed embossing plate surface are provided, the individual plates on their edges running transversely to the groove-shaped embossments Plate pairs and these plate pairs along the other, in Embossing edges of the individual plates with the respective next pair of plates are connected to a stack of plates, and wherein the Flow channels for one of the two involved in the evaporation process Medium wavy between each connected to a pair of plates Single plates, and for the other medium straight between successive pairs of plates are formed.
Die Erfindung geht insoweit konstruktiv aus von einem aus der DE 43 43 399 C2 bekannten, aus zueinander parallelen Einzelplatten zusammengesetzten Plattenwärmetauscher. Jeweils zwei Einzelplatten bilden ein Plattenpaar mit einem dazwischen wellenförmig verlaufenden Kanal für das eine am Wärmeaustausch beteiligte Medium. -Durch Zusammenfügen der Plattenpaare zu einem Plattenstapel ergeben sich zwischen den aneinanderliegenden Einzelplatten benachbarter Plattenpaare rohrförmige Kanäle für das andere am Wärmeaustausch beteiligte Medium. Die Bildung einerseits wellenförmiger und andererseits rohrförmiger Kanäle beruht auf der besonderen Prägungsstruktur der einzelnen Platten. Diese sind mit rillenförmigen Prägungen versehen, wobei die Prägungen benachbarter Reihen in Längsrichtung zueinander versetzt sind. In this respect, the invention is constructively based on one from DE 43 43 399 C2 known, composed of mutually parallel individual plates Plate heat exchanger. Two individual plates form a plate pair with one in between, wavy channel for the one at the heat exchange involved medium. - By joining the plate pairs into one Plate stacks result between the individual plates lying against each other adjacent plate pairs of tubular channels for the other on Medium involved in heat exchange. The formation on the one hand wavy and on the other hand, tubular channels are based on the special embossing structure of the individual plates. These are provided with groove-shaped embossings, the Embossments of adjacent rows are offset from one another in the longitudinal direction.
Für Verdampfungsprozesse ist der Plattenwärmetauscher nach der DE 43 43 399 C2 nur bedingt einsetzbar. Problematisch sind die zwischen den Platten benachbarter Plattenpaare verlaufenden, rohrförmigen Kanäle. Bei Einsatz des Wärmetauschers als Verdampfer neigen die rohrförmigen Kanäle zu einem Verstopfen, zumindest jedoch zu einem Absetzen von Feststoffen oder Partikeln in den die rohrförmigen Kanäle begrenzenden Spalten. Eine Reinigung des Plattenwärmetauschers muß daher chemisch erfolgen, mechanische Reinigungstechniken versagen. Dies ist insbesondere von Nachteil bei Einsatz des Wärmetauschers bei der Verarbeitung von Produkten der Lebensmittelindustrie, bei der erhöhte Hygieneanforderungen gestellt werden.The plate heat exchanger according to DE 43 43 399 is used for evaporation processes C2 can only be used to a limited extent. Those between the plates are problematic Tubular channels running adjacent pairs of plates. When using the Heat exchanger as an evaporator, the tubular channels tend to one Clogging, but at least to settling of solids or particles in the gaps delimiting the tubular channels. A cleaning of the Plate heat exchanger must therefore be chemical, mechanical Cleaning techniques fail. This is particularly disadvantageous when using the Heat exchanger in the processing of products of the food industry, with increased hygiene requirements.
Der Erfindung liegt die Aufgabe zugrunde, einen weniger zu Verunreinigungen neigenden und gleichzeitig besser zu reinigenden Plattenverdampfer zu schaffen.The invention has for its object to provide a less prone to contamination and at the same time easier to clean plate evaporator.
Zur Lösung wird bei einem Plattenverdampfer mit den eingangs genannten Merkmalen vorgeschlagen, daß aufeinanderfolgende Plattenpaare in der Ebene der in gerader Richtung verlaufenden Strömungskanäle durch einen durchgehenden Zwischenraum voneinander getrennt sind, und daß zur Aufrechterhaltung dieses Zwischenraums ein Abstandhalter die in Prägungsrichtung verlaufenden Ränder zweier aufeinanderfolgender Plattenpaare miteinander verbindet.To solve this problem , it is proposed in a plate evaporator with the features mentioned at the outset that successive plate pairs are separated from one another in the plane of the flow channels running in a straight direction by a continuous space, and that to maintain this space, a spacer is used to maintain the embossing edges of two successive plate pairs with one another combines.
Ein solcher Plattenverdampfer bietet verbesserte Reinigungsmöglichkeiten auf Seiten der sich gerade erstreckenden Strömungskanäle. Diese Strömungskanäle sind nicht nur röhrenförmig, sondern es handelt sich um vollständige, durchgehende Ebenen, wodurch eine Reinigung auch mit mechanischen Reinigungsmitteln möglich ist, ohne daß Verengungen, Spalte etc. ungereinigt bleiben. Der Plattenverdampfer kann auch für Prozesse eingesetzt werden, die nach einer Reinigung unbedingte Sterilität erfordern, z. B. bestimmte Anwendungen in der Nahrungsmittelindustrie. In der milchverarbeitenden Industrie z. B. können sich bei Einsatz des erfindungsgemäßen Plattenverdampfers keine Pulpeteilchen in Verengungen oder Spalten absetzen. Solche Pulpeteilchen bilden einen ständigen Ansteckungsherd bei der Verarbeitung von Milchprodukten. Such a plate evaporator offers improved cleaning options Sides of the straight extending flow channels. These flow channels are not just tubular, they are complete, continuous levels, which means cleaning with mechanical Detergent is possible without narrowing, gaps, etc. uncleaned stay. The plate evaporator can also be used for processes that require absolute sterility after cleaning, e.g. B. certain Applications in the food industry. In the milk processing industry z. B. can none when using the plate evaporator according to the invention Place pulp particles in constrictions or gaps. Form such pulp particles a constant source of infection in the processing of dairy products.
Weiterhin sind die beiden zu einem Plattenpaar verbundenen Einzelplatten durch Punktverschweißungen miteinander verbunden. Hierdurch läßt sich eine hohe Druckfestigkeit erreichen, so daß der Plattenverdampfer auch im Falle eines hohen Differenzdruckes zwischen den Drücken der beiden Medien eingesetzt werden kann.Furthermore, the two are one Plate pair of connected individual plates by spot welding to each other connected. This enables a high compressive strength to be achieved, so that the plate evaporator even in the case of a high differential pressure between the Pressing the two media can be used.
Im Rahmen der Erfindung ist von besonderer Bedeutung, daß der Zwischenraum zwischen aufeinanderfolgenden Plattenpaaren aufrecht erhalten bleibt. Hierzu wird in konstruktiv besonders einfacher Weise vorgeschlagen, daß die Abstandhalter Bestandteil einer Schlitzplatte sind, wobei jeder Schlitz die sich in Prägungsrichtung erstreckenden, offenen Ränder der beiden zu einem Plattenpaar verbundenen Einzelplatten spaltfrei aufnimmt, und die Bereiche zwischen aufeinanderfolgenden Schlitzen die Abstandhalter bilden. Die Breite der Bereiche zwischen aufeinanderfolgenden Schlitzen der Schlitzplatte bedingt daher den Abstand der Plattenpaare. Auf diese Weise läßt sich dieser Abstand mit einfachen Mitteln einhalten, Einbaufehler beim Zusammensetzen des Plattenverdampfers werden vermieden.In the context of the invention it is of particular importance that the space between successive pairs of plates is maintained. To do this proposed in a structurally particularly simple manner that the spacers Are part of a slotted plate, each slot being in Embossing direction extending, open edges of the two to a pair of plates connected individual plates gap-free, and the areas between successive slots form the spacers. The width of the areas between successive slits of the slotted plate therefore causes the Distance of the plate pairs. In this way, this distance can be easily Adhere to means, installation errors when assembling the plate evaporator are avoided.
Zur Verbesserung der Druckfestigkeit gegenüber Differenzdrücken der beiden am Verdampfungsprozeß beteiligten Medien wird ferner vorgeschlagen, daß die rinnenförmigen Prägungen in Draufsicht rechteckige Gestalt aufweisen, daß die Prägungen benachbarter Reihen um die Hälfte der Länge der einzelnen Prägung in Längsrichtung zueinander versetzt sind, und daß sich die Orte der Punktverschweißungen bei der ersten Einzelplatte des Plattenpaars mittig zwischen zwei aufeinanderfolgenden Prägungen derselben Reihe, und bei der zweiten Einzelplatte des Plattenpaars auf dem durchgehenden Steg zwischen zwei aufeinanderfolgenden Reihen von Prägungen befinden.To improve the compressive strength against differential pressures of the two am Media involved in the evaporation process is also proposed that the gutter-shaped embossments have a rectangular shape in plan view that the Embossing adjacent rows by half the length of the individual embossing are offset in the longitudinal direction to each other, and that the locations of the Spot welding in the middle of the first single plate of the plate pair between two successive impressions of the same series, and in the second single plate of the plate pair on the continuous web between two successive rows of embossments are located.
Im Hinblick auf das Druckverhalten des Plattenverdampfers lassen sich ferner zusätzliche Punktverschweißungen anbringen, wobei sich die Orte dieser zusätzlichen Punktverschweißungen bei der zweiten Einzelplatte des Plattenpaars mittig zwischen zwei aufeinanderfolgenden Prägungen derselben Reihe, und bei der ersten Einzelplatte des Plattenpaars auf dem durchgehenden Steg zwischen zwei aufeinanderfolgenden Reihen von Prägungen befinden. With regard to the pressure behavior of the plate evaporator can also be Attach additional spot welds, the locations of these additional spot welds on the second single plate of the plate pair in the middle between two successive impressions of the same row, and at the first single plate of the plate pair on the continuous web between two successive rows of embossments are located.
Auf der Zeichnung ist ein Ausführungsbeispiel eines erfindungsgemäßen Plattenverdampfers dargestellt, und zwar zeigen:
- Fig.1
- Eine perspektivische Ansicht eines aus insgesamt fünf Plattenpaaren und zwei Schlitzplatten zusammengesetzten Plattenverdampfers und
- Fig. 2
- eine vergrößert gezeichnete, perspektivische Darstellung der teilweise miteinander verbundenen Einzelplatten des Plattenverdampfers.
- Fig.1
- A perspective view of a plate evaporator and composed of a total of five plate pairs and two slotted plates
- Fig. 2
- an enlarged drawn, perspective view of the partially interconnected individual plates of the plate evaporator.
Der in Figur 1 anhand eines durch fünf Plattenpaare P gebildeten Plattenstapels
dargestellte Plattenwärmertauscher besteht aus identischen Einzelplatten 1, 2, die
spiegelbildlich zu einander zu einem Plattenpaar P verbunden sind. Diese
Verbindung erfolgt an den Längsrändern 3 der Einzelplatten 1, 2 sowie an
gleichmäßig über die Platten verteilten Schweißpunkten 4,13. Zwischen den
jeweils ein Plattenpaar P bildenden Einzelplatten 1, 2 ergibt sich ein wellenförmig
verlaufender Kanal K1 für das eine am Verdampfungsprozeß teilnehmende
Medium M1, nämlich einen heißen Gasstrom. Dieser wellenförmige Verlauf des
Kanals K1 ist insbesondere in der Schnittdarstellung Fig. 2 zu erkennen.The in FIG. 1 on the basis of a plate stack formed by five plate pairs P.
Plate heat exchanger shown consists of identical
Durch Anordnung mehrerer der Plattenpaare P zu einem Plattenstapel 5 ergeben
sich zwischen den einander nicht berührenden Einzelplatten benachbarter
Plattenpaare P sehr flache Räume mit rohrförmige Erweiterungen aufweisenden
Kanälen K2 für das andere am Verdampfungsprozeß teilnehmende Medium M2,
nämlich die zu verdampfende Flüssigkeit. Das Medium M2 ist im Kreuzstrom zum
Medium M1 geführt, der Strömungsquerschnitt der in gerader Linie mit
rohrförmigen Erweiterungen durchlaufenden Kanäle K2 ist ebenfalls in Figur 2 zu
erkennen.Arranged by arranging several of the plate pairs P to form a
Die Figur 1 zeigt, daß die aus den Einzelplatten 1 und 2 zusammengesetzten
Plattenpaare P zur Bildung des Plattenstapels 5 an ihren quer zu den
Längsrändern 3 verlaufenden Rändern 7 miteinander verbunden sind, und zwar
mittelbar über eine Schlitzplatte 8. Die Schlitzplatte 8 ist mit mehreren parallel
zueinander verlaufenden, schlitzförmigen Ausnehmungen 9 versehen, wobei jede
Ausnehmung 9 den offenen Rand 7 eines Plattenpaares P bündig aufnimmt. Figur
1 läßt ferner erkennen, daß die beiden ein Plattenpaar P bildenden Einzelplatten 1
und 2 im Bereich ihres Randes 7 mit einer sich über die gesamte Breite der Platte
erstreckenden Aufweitung 10 versehen ist, um so eine gute Zuströmung des
Mediums M1 zu ermöglichen. Diese Aufweitung des Randes 7 paßt nahezu bündig
in die jeweilige schlitzförmige Ausnehmung 9 der Schlitzplatte 8.Figure 1 shows that the assembled from the
Die Verbindung der Ränder 7 mit den jeweiligen Ausnehmungen 9 der
Schlitzplatte 8 erfolgt durch Verschweißen entlang dieser Ränder. Die zwischen
den Ausnehmungen 9 angeordneten Parallelbereiche der Schlitzplatte 8 dienen
hierbei als Abstandhalter 10 und bestimmen den Abstand zwischen jedem
Plattenpaar P und dem nachfolgenden Plattenpaar P. Insbesondere definieren
diese Abstandhalter 10 der Schlitzplatte 8 die Breite des ebenen Strömungskanals
K2 für das zweite Medium M2, welches in gerader Strömungsrichtung zwischen
aufeinanderfolgenden Plattenpaaren hindurchströmt. Infolge des für diesen
Strömungskanal über dessen ganze Fläche aufrechterhaltenden Abstandes
können sich in diesem Strömungskanal K2 keine Partikel oder Schmutzteilchen in
Spalten etc. absetzen und hierdurch die Reinigung dieses Strömungskanals K2
erschweren.The connection of the edges 7 with the
Jede Einzelplatte 1, 2 ist mit mehreren parallelen Reihen von in Strömungsrichtung
des Mediums M2 verlaufenden, rinnenförmigen Prägungen 12 versehen. Die
Prägungen 12 benachbarter Reihen sind in Längsrichtung zueinander versetzt.
Hierdurch ergeben sich zwischen aneinanderliegenden, jeweils ein Plattenpaar P
bildenden Einzelplatten 1, 2 flächige Abstützungen. Diese Abstützungen bilden
gleichmäßig über die gesamte Oberfläche der Einzelplatten verteilte Stützfelder
geringer Abmessung, so daß auch bei einem höheren Überdruck in den Kanälen
K2 eine zuverlässige Abstützung der Einzelplatten eines Plattenpaares P erzielt
wird. Auch bei hohen Differenzdrücken sind keine bleibenden Verformungen der
Einzelplatten zu befürchten.Each
Die Prägungen 12 weisen eine Länge auf, die in etwa das Doppelte bis Dreifache
der Breite der Prägung beträgt. Insgesamt bilden die Prägungen 12 in Draufsicht
ein Muster ähnlich einem Mauerwerk. Die Prägungen benachbarter Reihen sind
um die Hälfte der Länge der einzelnen Prägungen in Längsrichtung zueinander
versetzt.The
Die Verbindung der beiden Einzelplatten 1, 2 zu einem Plattenpaar P erfolgt außer
der Verschweißung entlang der Längsränder 3 zusätzlich durch die
Punktverschweißungen 13. Wie Figur 2 erkennen läßt, befinden sich die Orte der
Punktverschweißungen 13 bei der ersten Einzelplatte 1 des Plattenpaares P mittig
zwischen zwei aufeinanderfolgenden Prägungen 12 derselben Reihe, und bei der
zweiten Einzelplatte 2 des Plattenpaars auf dem durchgehenden Steg 14
zwischen zwei aufeinanderfolgenden Reihen von Prägungen 12. Entsprechende
Punktverschweißungen befinden sich vorzugsweise umgekehrt zwischen
aufeinanderfolgenden Prägungen bei der zweiten Einzelplatte 2, und
entsprechend auf dem durchgehenden Steg zwischen zwei aufeinanderfolgenden
Reihen von Prägungen der ersten Einzelplatte 1. Bei höherem Druck in den
Kanälen K1 sorgen die Punktverschweißungen 13 für die Stabilität der
Plattenpaare P und auf diese Weise für einen gleichbleibenden
Strömungsquerschnitt der Kanäle K2. The connection of the two
- 11
- EinzelplatteSingle plate
- 22
- EinzelplatteSingle plate
- 33
- Längsrandlongitudinal edge
- 44
- SchweißpunktWeldingSpot
- 55
- Plattenstapelplate stack
- 77
- Randedge
- 88th
- Schlitzplatteslot plate
- 99
- Ausnehmungrecess
- 1010
- Abstandhalterspacer
- 1212
- Prägungembossing
- 1313
- Punktverschweißungspot welding
- 1414
- durchgehender Stegcontinuous web
- K1K1
- Kanalchannel
- K2K2
- Kanalchannel
- M1M1
- Medium 1Medium 1
- M2M2
-
Medium 2
Medium 2 - PP
- Plattenpaarpair of plates
Claims (4)
- Plate evaporator for processing products with a high hygiene requirement, consisting of individual plates (1, 2) which are provided with channel-like embossings (12) distributed evenly in a plurality of parallel rows over the plate surface, wherein the individual plates (1, 2) are connected together at their edges (3), which extend transversely to the channel-like embossings, to form plate pairs (P) and these plate pairs are connected along the respective other edges (7), which extend in the embossing direction, of the individual plates to the respective next plate pair (P) to form a plate stack (5), and wherein the flow ducts for one (M1) of the two media involved in the evaporation process are formed in undulating fashion between individual plates in each case connected to form a plate pair (P), and for the other medium (M2) in a straight line between successive plate pairs (P), wherein successive plate pairs (P) are separated from one another in the plane of the flow ducts (K2), which extend in a straight direction, by a continuous interspace, and that a distance piece (10) connects together the edges (6), which extend in the embossing direction, of two successive plate pairs (P) in order to maintain this interspace, so as to improve the potential for cleaning the flow ducts (K2), and that the two individual plates which are connected to form a plate pair (P) are connected together by means of spot welds (13) at welding spots (4) distributed evenly over the plates.
- Evaporator according to Claim 1, characterised in that the distance pieces (10) constitute a component part of a slotted plate (8), wherein each slot accommodates gap-free the open edges, which extend in the embossing direction, of the two individual plates (1, 2) connected to form a plate pair (P), and the regions between successive slots form the distance pieces (10).
- Evaporator according to Claim 1 or 2, characterised in that the channel-like embossings (12) are rectangular in plan view, that the embossings (12) of adjacent rows are staggered in the longitudinal direction by half the length of the individual embossing, and that the locations of the spot welds (13) of the first individual plate (1) of the plate pair (P) are located centrally between two successive embossings of the same row, and of the second individual plate (2) of the plate pair (P) on the continuous web (14) between two successive rows of embossings.
- Evaporator according to Claim 3, characterised by additional spot welds, wherein the locations of these additional spot welds of the second individual plate (2) of the plate pair (P) are located centrally between two successive embossings of the same row, and of the first individual plate (1) of the plate pair (P) on the continuous web (14) between two successive rows of embossings.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE50102418T DE50102418D1 (en) | 2001-07-26 | 2001-07-26 | plate evaporator |
| ES01118092T ES2220635T3 (en) | 2001-07-26 | 2001-07-26 | EVAPORATOR OF PLATES. |
| EP20010118092 EP1279916B1 (en) | 2001-07-26 | 2001-07-26 | Plate heat exchanger |
| DK01118092T DK1279916T3 (en) | 2001-07-26 | 2001-07-26 | plate evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20010118092 EP1279916B1 (en) | 2001-07-26 | 2001-07-26 | Plate heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1279916A1 EP1279916A1 (en) | 2003-01-29 |
| EP1279916B1 true EP1279916B1 (en) | 2004-05-26 |
Family
ID=8178136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20010118092 Expired - Lifetime EP1279916B1 (en) | 2001-07-26 | 2001-07-26 | Plate heat exchanger |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1279916B1 (en) |
| DE (1) | DE50102418D1 (en) |
| DK (1) | DK1279916T3 (en) |
| ES (1) | ES2220635T3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130048261A1 (en) * | 2011-08-26 | 2013-02-28 | Hs Marston Aerospace Ltd. | Heat exhanger |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE318847B (en) * | 1966-08-22 | 1969-12-22 | Rosenblads Patenter Ab | |
| US3525391A (en) * | 1969-01-21 | 1970-08-25 | Waterdome Corp | Heat exchanger and method of making same |
| DE2345721C2 (en) * | 1973-09-11 | 1982-04-15 | Arenco-Bmd Maschinenfabrik Gmbh, 7500 Karlsruhe | Cleaning device of a cooler for gases laden with solids |
| EP0321667B1 (en) * | 1987-12-22 | 1992-03-25 | Hans Dr. Viessmann | Heater |
| DE4343399C2 (en) * | 1993-12-18 | 1995-12-14 | Balcke Duerr Ag | Plate heat exchanger |
| DE19832164C2 (en) * | 1998-07-17 | 2002-12-05 | Balcke Duerr Gmbh | Plate heat exchanger |
| DE19944426C2 (en) * | 1999-09-16 | 2003-01-09 | Balcke Duerr Energietech Gmbh | Plate heat exchangers and evaporators |
-
2001
- 2001-07-26 ES ES01118092T patent/ES2220635T3/en not_active Expired - Lifetime
- 2001-07-26 DK DK01118092T patent/DK1279916T3/en active
- 2001-07-26 DE DE50102418T patent/DE50102418D1/en not_active Expired - Lifetime
- 2001-07-26 EP EP20010118092 patent/EP1279916B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DK1279916T3 (en) | 2004-09-27 |
| ES2220635T3 (en) | 2004-12-16 |
| EP1279916A1 (en) | 2003-01-29 |
| DE50102418D1 (en) | 2004-07-01 |
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