EP1475596A2 - Plate heat exchanger with single and dopple wall plates - Google Patents

Plate heat exchanger with single and dopple wall plates Download PDF

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Publication number
EP1475596A2
EP1475596A2 EP04009741A EP04009741A EP1475596A2 EP 1475596 A2 EP1475596 A2 EP 1475596A2 EP 04009741 A EP04009741 A EP 04009741A EP 04009741 A EP04009741 A EP 04009741A EP 1475596 A2 EP1475596 A2 EP 1475596A2
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EP
European Patent Office
Prior art keywords
heat exchanger
walled
plate
exchanger plates
heat
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
EP04009741A
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German (de)
French (fr)
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EP1475596A3 (en
EP1475596B1 (en
Inventor
Peter Rehberg
Ralf Lauer
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Kelvion Brazed PHE GmbH
Original Assignee
Lauer Ralf Dipl-Ing
Rehberg Peter Dipl-Ing
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Publication of EP1475596A2 publication Critical patent/EP1475596A2/en
Publication of EP1475596A3 publication Critical patent/EP1475596A3/en
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Publication of EP1475596B1 publication Critical patent/EP1475596B1/en
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    • 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
    • F28F3/046—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 the deformations being linear, e.g. corrugations
    • 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

Definitions

  • the invention is in the field of plate heat exchangers.
  • Plate heat exchangers are used to transfer thermal energy between heat exchange fluids transferred to. At least two heat exchanger fluids flow through separate fluids Flow spaces formed between heat exchanger plates in the plate heat exchanger are.
  • the heat exchanger plates are usually arranged in a stack, which Is part of the plate heat exchanger.
  • the separate flow spaces are created using of openings formed in the heat exchanger plates and between the heat exchanger plates trained spaces.
  • a heat transfer between the at least two heat exchanger fluids essentially take place in the region of one central heat transfer section of the heat exchanger plates instead.
  • To transfer the Thermal energy flows through one of the heat exchanger fluids through a flow space on one Side of a heat exchanger plate and another heat exchanger fluid through a flow space on the other side of the heat exchanger plate. Through the heat exchanger plate heat is then passed between the two heat exchanger fluids flowing in countercurrent replaced.
  • plate heat exchangers in which the stacked heat exchanger plates each are designed as single-walled heat exchanger plates with a single plate element, plate heat exchangers are known, in which all relevant for heat transfer Heat exchanger plates of the stack are designed as double-walled heat exchanger plates are. Double-walled heat exchanger plates are made using two plate elements formed that closely at least in the area of the central heat transfer section come to rest against each other.
  • plate heat exchangers with a stack of double-walled heat exchanger plates can be used for applications where three separate flow spaces for three heat exchanger fluids with the help of the openings in the heat exchanger plates and the gaps between the heat exchanger plates in a plate heat exchanger are formed.
  • the object of the invention is to provide an improved plate heat exchanger with which the application possibilities for the use of plate heat exchangers are expanded.
  • the invention encompasses the idea of a plate heat exchanger with a stack of Heat exchanger plates that are permanently connected to each other and separated between them Flow spaces for at least two heat exchanger fluids are to be provided, in which a part of the heat exchanger plates usable for heat transfer each as a single-walled heat exchanger plate with one plate element and another Part of the heat exchanger plates usable for heat transfer each as a double wall Heat exchanger plate is designed with two plate elements.
  • plate heat exchangers can be manufactured, which as a single component sections in Have stacks of heat exchanger plates that meet various safety standards.
  • a plate heat exchanger enables plate heat exchangers for applications manufacture, in which to some extent the use of the more expensive double-walled Heat exchanger plates for the purpose of ensuring an adequate safety standard is necessary, but also at least a part of the heat exchanger plates can also be single-walled, because for some of the in the plate heat exchanger formed flow spaces a lower safety standard is sufficient.
  • Such use cases are particularly present when flow spaces in the plate heat exchanger are formed for more than two heat exchanger fluids. In this case it happens often before that regarding the heat transfer between one of the heat exchanger fluids and another of the heat exchanger fluids to ensure a higher safety standard is what the double-walled design of the heat exchanger plates requires. In terms of the heat transfer between the one heat exchanger fluid and another of the Heat exchanger fluids, however, a low safety standard is sufficient, so that the heat exchanger plates can be single-walled here.
  • the combination of double-walled and single-walled heat exchanger plates has this furthermore the advantage that in this way in a plate heat exchanger, which is usually is designed with double-walled heat exchanger plates, in some cases more efficient heat transfer used in connection with the single-walled heat exchanger plates can be.
  • using the combination of the two types of heat exchanger plates the manufacturing cost compared to the known, exclusively plate heat exchangers equipped with double-walled heat exchanger plates.
  • Figure 1 shows a schematic representation of an arrangement with several single-walled Heat exchanger plates 1 and several double-walled heat exchanger plates 2. Both Types of heat exchanger plates each have a central heat transfer section 3 and openings 4 in corner areas 5. In the area outside the openings 4 Embossments 6 are provided for forming surface structures. The embossing 6 support the spaced arrangement of the single-walled / double-walled heat exchanger plates 1, 2 for forming the flow spaces when using the single-walled / double-walled Heat exchanger plates 1, 2 in a plate heat exchanger.
  • a plate heat exchanger 20 is shown in front and side view.
  • the plate heat exchanger comprises a stack 21 with the arrangement of the single-walled / double-walled Heat exchanger plates 1, 2 according to Figure 1, the single-walled / double-walled Heat exchanger plates 1, 2 permanently connected to each other by means of soldering are.
  • the plate heat exchanger 20 further comprises two outer plates 22, 23 with Connections 24 for introducing and discharging the heat exchanger fluids. Between the several Heat exchanger plates 1, 2 are separate flow spaces for the connections 24 introduced / removed heat exchanger fluids formed.
  • the heat exchanger fluids are along the heat exchanger plates 1, 2 through the separate flow spaces in Countercurrent led.
  • the embossments 6 cause in the central heat transfer sections 3 of the single-walled / double-walled heat exchanger plates 1, 2 a highly turbulent Flow of the heat exchanger fluids between the several heat exchanger plates 1, 2.
  • FIG. 4 shows a cross-sectional illustration of the plate heat exchanger 20 according to FIG. 2 a line AA 'in Figure 2.
  • the stack 21 in the illustrated embodiment of the plate heat exchanger 20 comprises three double-walled heat exchanger plates 2a, 2b, 2c, each have two plate elements 2a ', 2a ", 2b', 2b" and 2c ', 2c ".
  • Both the single-walled as the double-walled heat exchanger plates 1, 2 have one opposite the plane of the central heat transfer section 3 raised edge 26.
  • an optional outer edge 27 is formed, which is bent outwards so that the outer edge 27 substantially parallel to the plane of the central heat transfer section 3 runs. In an alternative embodiment, can the outer edge 27 may be omitted.
  • heat exchanger fluid is what is due to a leak in one of the two plate elements 2a ', 2a “, 2b', 2b” or 2c ', 2c "between the plate elements 2a', 2a", 2b ', 2b “ or 2c ', 2c "and reaches the region of the edge 26 due to capillary action, already visible from the outside in an area 28.
  • the single-walled and double-walled heat exchanger plates 1, 2 each in separate stacks 21a, 21b summarized.
  • Heat exchanger plates 1, 2 can be provided, for example with several stacks of single-walled / double-walled heat exchanger plates 1, 2 in a plate heat exchanger.

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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)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Plate heat exchanger comprises a stack of heat-exchanger plates that are permanently joined together. Separate through flow chambers for at least two heat-exchanger fluids are formed between the heat-exchanger plates. Some of the heat-exchanger plates are designed as single-walled heat-exchanger plates (1) with one plate element and some are designed as double-walled heat-exchanger plates (2a-c) with two plate elements (2a'-2c', 2a''-2c''). Preferred Features: Separate through flow chambers for three heat-exchanger fluids are formed between the heat-exchanger plates.

Description

Die Erfindung liegt auf dem Gebiet von Plattenwärmeübertragern.The invention is in the field of plate heat exchangers.

Plattenwärmeübertrager werden genutzt, um Wärmeenergie zwischen Wärmetauscher-Fluiden zu übertragen. Hierbei durchströmen wenigstens zwei Wärmetauscher-Fluide getrennte Durchflußräume, die zwischen Wärmeübertragerplatten in dem Plattenwärmeübertrager gebildet sind. Die Wärmeübertragerplatten sind üblicherweise in einem Stapel angeordnet, welcher Teil des Plattenwärmeübertragers ist. Die getrennten Durchflußräume werden mit Hilfe von in den Wärmeübertragerplatten gebildeten Durchbrüchen und zwischen den Wärmeübertragerplatten ausgebildeten Zwischenräumen geschaffen. Eine Wärmeübertragung zwischen den wenigstens zwei Wärmetauscher-Fluiden findet hierbei im wesentlichen im Bereich eines zentralen Wärmeübergangsabschnitts der Wärmeübertragerplatten statt. Zur Übertragung der Wärmeenergie strömt eines der Wärmetauscher-Fluide durch einen Durchflußraum auf einer Seite einer Wärmeübertragerplatte und ein anderes Wärmetauscher-Fluid durch einen Durchflußraum auf der anderen Seite der Wärmeübertragerplatte. Durch die Wärmeübertragerplatte hindurch wird dann Wärme zwischen den beiden im Gegenstrom fließenden Wärmetauscher-Fluiden ausgetauscht.Plate heat exchangers are used to transfer thermal energy between heat exchange fluids transferred to. At least two heat exchanger fluids flow through separate fluids Flow spaces formed between heat exchanger plates in the plate heat exchanger are. The heat exchanger plates are usually arranged in a stack, which Is part of the plate heat exchanger. The separate flow spaces are created using of openings formed in the heat exchanger plates and between the heat exchanger plates trained spaces. A heat transfer between the at least two heat exchanger fluids essentially take place in the region of one central heat transfer section of the heat exchanger plates instead. To transfer the Thermal energy flows through one of the heat exchanger fluids through a flow space on one Side of a heat exchanger plate and another heat exchanger fluid through a flow space on the other side of the heat exchanger plate. Through the heat exchanger plate heat is then passed between the two heat exchanger fluids flowing in countercurrent replaced.

Neben Plattenwärmeübertragern, bei denen die gestapelten Wärmeübertragerplatten jeweils als einwandige Wärmeübertragerplatten mit einem einzelnen Plattenelement ausgebildet sind, sind Plattenwärmeübertrager bekannt, bei denen sämtliche für die Wärmeübertragung relevanten Wärmeübertragerplatten des Stapels als doppelwandige Wärmeübertragerplatten ausgeführt sind. Doppelwandige Wärmeübertragerplatten werden mit Hilfe von zwei Plattenelementen gebildet, die mindestens im Bereich des zentralen Wärmeübergangsabschnitts eng aneinander zur Anlage kommen. Mit Hilfe doppelwandiger Wärmeübertragerplatten kann ein im Vergleich zu einwandigen Wärmeübertragerplatten höherer Sicherheitsstandard gewährleistet werden, indem bei einem Leck in einer der beiden Plattenelemente der doppelwandigen Wärmeübertragerplatte die beiden Wärmetauscher-Fluide nicht vermischt werden, da die Leckflüssigkeit lediglich in den Zwischenraum zwischen den beiden Plattenelementen und dort in den Randbereich nach außen gelangt, aber nicht auf die andere Seite der Wärmeübertragerplatte. Insbesondere Plattenwärmeübertrager mit einem Stapel doppelwandiger Wärmeübertragerplatten können für Anwendungen genutzt werden, bei denen drei getrennte Durchflußräume für drei Wärmetauscher-Fluide mit Hilfe der Durchbrüche in den Wärmeübertragerplatten und den Zwischenräumen zwischen den Wärmeübertragerplatten in einem Plattenwärmeübertrager gebildet sind.In addition to plate heat exchangers, in which the stacked heat exchanger plates each are designed as single-walled heat exchanger plates with a single plate element, plate heat exchangers are known, in which all relevant for heat transfer Heat exchanger plates of the stack are designed as double-walled heat exchanger plates are. Double-walled heat exchanger plates are made using two plate elements formed that closely at least in the area of the central heat transfer section come to rest against each other. With the help of double-walled heat exchanger plates, a guaranteed higher safety standard compared to single-walled heat exchanger plates by double-walled if there is a leak in one of the two plate elements Heat exchanger plate the two heat exchanger fluids cannot be mixed as the Leakage liquid only in the space between the two plate elements and there in the edge area to the outside, but not on the other side of the heat exchanger plate. In particular, plate heat exchangers with a stack of double-walled heat exchanger plates can be used for applications where three separate flow spaces for three heat exchanger fluids with the help of the openings in the heat exchanger plates and the gaps between the heat exchanger plates in a plate heat exchanger are formed.

Aufgabe der Erfindung ist es, einen verbesserten Plattenwärmeübertrager anzugeben, mit dem die Anwendungsmöglichkeiten zur Nutzung von Plattenwärmeübertragern erweitert werden.The object of the invention is to provide an improved plate heat exchanger with which the application possibilities for the use of plate heat exchangers are expanded.

Diese Aufgabe wird erfindungsgemäß durch einen Plattenwärmeübertrager nach dem unabhängigen Anspruch 1 gelöst.This object is achieved by a plate heat exchanger according to the independent Claim 1 solved.

Die Erfindung umfaßt den Gedanken, einen Plattenwärmeübertrager mit einem Stapel von Wärmeübertragerplatten, die dauerhaft miteinander verbunden sind und zwischen denen getrennte Durchflußräume für wenigstens zwei Wärmetauscher-Fluide gebildet sind, vorzusehen, bei dem ein Teil der für die Wärmeübertragung nutzbaren Wärmeübertragerplatten jeweils als eine einwandige Wärmeübertragerplatte mit einem Plattenelement und ein anderer Teil der für die Wärmeübertragung nutzbaren Wärmeübertragerplatten jeweils als eine doppelwandige Wärmeübertragerplatte mit zwei Plattenelementen ausgeführt ist. Auf diese Weise können Plattenwärmeübertrager hergestellt werden, die als einzelnes Bauteil Abschnitte im Stapel der Wärmeübertragerplatten aufweisen, die verschiedene Sicherheitsstandards erfüllen. Mit Hilfe der Kombination von einwandigen und doppelwandigen Wärmeübertragerplatten in einen Plattenwärmeübertrager wird es ermöglicht, Plattenwärmeübertrager für Anwendungen herzustellen, in denen zwar in gewissem Umfang die Nutzung der teureren doppelwandigen Wärmeübertragerplatten zu Zwecken der Gewährleistung eines ausreichenden Sicherheitsstandards notwendig ist, darüber hinaus aber wenigstens ein Teil der Wärmeübertragerplatten auch einwandig ausgeführt werden kann, da für einen Teil der in dem Plattenwärmeübertrager gebildeten Durchflußräume ein geringerer Sicherheitsstandard ausreichend ist. Derartige Anwendungsfälle liegen insbesondere dann vor, wenn in dem Plattenwärmeübertrager Durchflußräume für mehr als zwei Wärmetauscher-Fluide gebildet sind. In diesem Fall kommt es häufig vor, daß bezüglich des Wärmeübergangs zwischen einem der Wärmetauscher-Fluide und einem anderen der Wärmetauscher-Fluide ein höherer Sicherheitsstandard zu gewährleisten ist, was die doppelwandige Ausbildung der Wärmeübertragerplatten voraussetzt. Bezüglich des Wärmeübergangs zwischen dem einen Wärmetauscher-Fluid und einem weiteren der Wärmetauscher-Fluide reicht jedoch ein niedriger Sicherheitsstandard aus, so daß die Wärmeübertragerplatten hier einwandig ausgebildet werden können.The invention encompasses the idea of a plate heat exchanger with a stack of Heat exchanger plates that are permanently connected to each other and separated between them Flow spaces for at least two heat exchanger fluids are to be provided, in which a part of the heat exchanger plates usable for heat transfer each as a single-walled heat exchanger plate with one plate element and another Part of the heat exchanger plates usable for heat transfer each as a double wall Heat exchanger plate is designed with two plate elements. In this way plate heat exchangers can be manufactured, which as a single component sections in Have stacks of heat exchanger plates that meet various safety standards. With the help of the combination of single-walled and double-walled heat exchanger plates in A plate heat exchanger enables plate heat exchangers for applications manufacture, in which to some extent the use of the more expensive double-walled Heat exchanger plates for the purpose of ensuring an adequate safety standard is necessary, but also at least a part of the heat exchanger plates can also be single-walled, because for some of the in the plate heat exchanger formed flow spaces a lower safety standard is sufficient. Such use cases are particularly present when flow spaces in the plate heat exchanger are formed for more than two heat exchanger fluids. In this case it happens often before that regarding the heat transfer between one of the heat exchanger fluids and another of the heat exchanger fluids to ensure a higher safety standard is what the double-walled design of the heat exchanger plates requires. In terms of the heat transfer between the one heat exchanger fluid and another of the Heat exchanger fluids, however, a low safety standard is sufficient, so that the heat exchanger plates can be single-walled here.

Die Kombination von doppelwandigen und einwandigen Wärmeübertragerplatten hat darüber hinaus den Vorteil, daß auf diese Weise in einem Plattenwärmeübertrager, der üblicherweise mit doppelwandigen Wärmeübertragerplatten ausgeführt ist, zum Teil die effizientere Wärmeübertragung im Zusammenhang mit den einwandigen Wärmeübertragerplatten genutzt werden kann. Darüber hinaus werden mit Hilfe der Kombination der beiden Arten von Wärmeübertragerplatten die Herstellungskosten im Vergleich zu den bekannten, ausschließlich mit doppelwandigen Wärmeübertragerplatten ausgestatteten Plattenwärmeübertragern gesenkt.The combination of double-walled and single-walled heat exchanger plates has this furthermore the advantage that in this way in a plate heat exchanger, which is usually is designed with double-walled heat exchanger plates, in some cases more efficient heat transfer used in connection with the single-walled heat exchanger plates can be. In addition, using the combination of the two types of heat exchanger plates the manufacturing cost compared to the known, exclusively plate heat exchangers equipped with double-walled heat exchanger plates.

Die Vorteile der kombinierten Nutzung von einwandigen und doppelwandigen Wärmeübertragerplatten in einem Plattenwärmeübertrager werden insbesondere dann wirksam genutzt, wenn zwischen den Wärmeübertragerplatten getrennte Durchflußräume für drei Wärmetauscher-Fluide gebildet sind.The advantages of the combined use of single-walled and double-walled heat exchanger plates in a plate heat exchanger are used particularly effectively, if there are separate flow spaces for three heat exchanger fluids between the heat exchanger plates are formed.

Die Erfindung wird im folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf eine Zeichnung näher erläutert. Hierbei zeigen:

Figur 1
einen Stapel mit mehreren Wärmeübertragerplatten;
Figur 2
eine schematische Darstellung eines Plattenwärmeübertragers in Vorderansicht;
Figur 3
eine schematische Darstellung des Plattenwärmeübertragers nach Figur 2 in Seitenansicht;
Figur 4
eine Querschnittsdarstellung des Plattenwärmeübertragers nach Figur 2 entlang einer Linie AA' in Figur 2; und
Figur 5
eine vergrößerte Darstellung eines Randbereichs der Querschnittsdarstellung in Figur 4.
The invention is explained in more detail below using exemplary embodiments with reference to a drawing. Here show:
Figure 1
a stack with several heat exchanger plates;
Figure 2
a schematic representation of a plate heat exchanger in front view;
Figure 3
a schematic representation of the plate heat exchanger according to Figure 2 in side view;
Figure 4
a cross-sectional view of the plate heat exchanger according to Figure 2 along a line AA 'in Figure 2; and
Figure 5
3 shows an enlarged representation of an edge region of the cross-sectional representation in FIG. 4.

Figur 1 zeigt eine schematische Darstellung einer Anordnung mit mehreren einwandigen Wärmeübertragerplatten 1 und mehreren doppelwandigen Wärmeübertragerplatten 2. Beide Arten von Wärmeübertragerplatten verfügen jeweils über einen zentralen Wärmeübergangsabschnitt 3 sowie Durchbrüche 4 in Eckbereichen 5. Im Bereich außerhalb der Durchbrüche 4 sind zum Ausbilden von Oberflächenstrukturen Prägungen 6 vorgesehen. Die Prägungen 6 unterstützen die beabstandete Anordnung der einwandigen/doppelwandigen Wärmeübertragerplatten 1, 2 zum Ausbilden der Durchflußräume bei der Nutzung der einwandigen/doppelwandigen Wärmeübertragerplatten 1, 2 in einem Plattenwärmeübertrager.Figure 1 shows a schematic representation of an arrangement with several single-walled Heat exchanger plates 1 and several double-walled heat exchanger plates 2. Both Types of heat exchanger plates each have a central heat transfer section 3 and openings 4 in corner areas 5. In the area outside the openings 4 Embossments 6 are provided for forming surface structures. The embossing 6 support the spaced arrangement of the single-walled / double-walled heat exchanger plates 1, 2 for forming the flow spaces when using the single-walled / double-walled Heat exchanger plates 1, 2 in a plate heat exchanger.

In den Figuren 2 und 3 ist ein Plattenwärmeübertrager 20 in Vorder- bzw. Seitenansicht gezeigt. Der Plattenwärmeübertrager umfaßt einen Stapel 21 mit der Anordnung der einwandigen/doppelwandigen Wärmeübertragerplatten 1, 2 nach Figur 1, wobei die einwandigen/doppelwandigen Wärmeübertragerplatten 1, 2 mittels Lötens dauerhaft miteinander verbunden sind. Der Plattenwärmeübertrager 20 umfaßt weiterhin zwei äußere Platten 22, 23 mit Anschlüssen 24 zum Einführen und Abführen der Wärmetauscher-Fluide. Zwischen den mehreren Wärmeübertragerplatten 1, 2 sind getrennte Durchflußräume für die über die Anschlüsse 24 eingeführten/abgeführten Wärmetauscher-Fluide gebildet. Die Wärmetauscher-Fluide werden entlang der Wärmeübertragerplatten 1, 2 durch die getrennten Durchflußräume im Gegenstrom geführt. Hierbei verursachen die Prägungen 6 in den zentralen Wärmeübergangsabschnitten 3 der einwandigen/doppelwandigen Wärmeübertragerplatten 1, 2 einen hochturbulenten Durchfluß der Wärmetauscher-Fluide zwischen den mehreren Wärmeübertragerplatten 1, 2.In Figures 2 and 3, a plate heat exchanger 20 is shown in front and side view. The plate heat exchanger comprises a stack 21 with the arrangement of the single-walled / double-walled Heat exchanger plates 1, 2 according to Figure 1, the single-walled / double-walled Heat exchanger plates 1, 2 permanently connected to each other by means of soldering are. The plate heat exchanger 20 further comprises two outer plates 22, 23 with Connections 24 for introducing and discharging the heat exchanger fluids. Between the several Heat exchanger plates 1, 2 are separate flow spaces for the connections 24 introduced / removed heat exchanger fluids formed. The heat exchanger fluids are along the heat exchanger plates 1, 2 through the separate flow spaces in Countercurrent led. Here, the embossments 6 cause in the central heat transfer sections 3 of the single-walled / double-walled heat exchanger plates 1, 2 a highly turbulent Flow of the heat exchanger fluids between the several heat exchanger plates 1, 2.

Figur 4 zeigt eine Querschnittsdarstellung des Plattenwärmeübertragers 20 nach Figur 2 entlang einer Linie AA' in Figur 2. Zwischen den äußeren Platten 22, 23 ist der Stapel 21 mit den einwandigen und den doppelwandigen Wärmeübertragerplatten 1, 2 angeordnet. Figur 5 zeigt eine vergrößerte Darstellung eines Randbereichs 25 der Querschnittsdarstellung in Figur 4. Hieraus ergibt sich, daß der Stapel 21 bei der dargestellten Ausrührungsform des Plattenwärmeübertragers 20 drei doppelwandige Wärmeübertragerplatten 2a, 2b, 2c umfaßt, die jeweils zwei Plattenelemente 2a', 2a", 2b', 2b" bzw. 2c', 2c" aufweisen. Sowohl die einwandigen als die doppelwandigen Wärmeübertragerplatten 1, 2 weisen einen gegenüber der Ebene des zentralen Wärmeübergangsabschnitts 3 hochgestellten Rand 26 auf. An dem Rand 26 ist bei der dargestellten Ausführungsform ein optionaler äußerer Rand 27 angeformt, welcher nach außen gebogen ist, so daß der äußere Rand 27 im wesentlichen parallel zur Ebene des zentralen Wärmeübergangsabschnitts 3 verläuft. Bei einer alternativen Ausführungsform kann der äußere Rand 27 weggelassen werden.FIG. 4 shows a cross-sectional illustration of the plate heat exchanger 20 according to FIG. 2 a line AA 'in Figure 2. Between the outer plates 22, 23, the stack 21 with the single-walled and the double-walled heat exchanger plates 1, 2 arranged. Figure 5 shows an enlarged representation of an edge region 25 of the cross-sectional representation in FIG 4. It follows that the stack 21 in the illustrated embodiment of the plate heat exchanger 20 comprises three double-walled heat exchanger plates 2a, 2b, 2c, each have two plate elements 2a ', 2a ", 2b', 2b" and 2c ', 2c ". Both the single-walled as the double-walled heat exchanger plates 1, 2 have one opposite the plane of the central heat transfer section 3 raised edge 26. At the edge 26 In the embodiment shown, an optional outer edge 27 is formed, which is bent outwards so that the outer edge 27 substantially parallel to the plane of the central heat transfer section 3 runs. In an alternative embodiment, can the outer edge 27 may be omitted.

Gemäß der Darstellung in Figur 5 sind die äußeren Ränder 27 der beiden Plattenelemente 2a', 2a", 2b', 2b" bzw. 2c', 2c" der doppelwandigen Wärmeübertragerplatten 2a, 2b, 2c voneinander beabstandet, wohingegen die äußeren Ränder 27 der benachbarten doppelwandigen Wärmeübertragerplatten 2a und 2b sowie 2b und 2c eng aneinander zur Anlage kommen. Auf diese Weise wird Wärmetauscher-Fluid, was aufgrund eines Lecks in einer der zwei Plattenelemente 2a', 2a", 2b', 2b" bzw. 2c', 2c"zwischen die Plattenelemente 2a', 2a", 2b', 2b" bzw. 2c', 2c" gelangt und aufgrund von Kapillarwirkung in den Bereich des Rands 26 gelangt, bereits in einem Bereich 28 von außen sichtbar.As shown in FIG. 5, the outer edges 27 of the two plate elements 2a ', 2a ", 2b ', 2b" or 2c', 2c "of the double-walled heat exchanger plates 2a, 2b, 2c from each other spaced, whereas the outer edges 27 of the adjacent double-walled Heat exchanger plates 2a and 2b as well as 2b and 2c come into close contact with each other. On this way heat exchanger fluid is what is due to a leak in one of the two plate elements 2a ', 2a ", 2b', 2b" or 2c ', 2c "between the plate elements 2a', 2a", 2b ', 2b " or 2c ', 2c "and reaches the region of the edge 26 due to capillary action, already visible from the outside in an area 28.

Bei der beschriebenen Ausführungsform des Plattenwärmeübertragers 20 sind die einwandigen und doppelwandigen Wärmeübertragerplatten 1, 2 jeweils in separaten Stapeln 21a, 21b zusammengefaßt. Es können jedoch beliebige Kombinationen von einwandigen und doppelwandigen Wärmeübertragerplatten 1, 2 vorgesehen sein, beispielsweise mit mehreren Stapeln von einwandigen/doppelwandigen Wärmeübertragerplatten 1, 2 in einem Plattenwärmeübertrager.In the described embodiment of the plate heat exchanger 20, the single-walled and double-walled heat exchanger plates 1, 2 each in separate stacks 21a, 21b summarized. However, any combination of single-walled and double-walled can be used Heat exchanger plates 1, 2 can be provided, for example with several stacks of single-walled / double-walled heat exchanger plates 1, 2 in a plate heat exchanger.

Die in der vorstehenden Beschreibung, den Ansprüchen und der Zeichnung offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen von Bedeutung sein.Those disclosed in the foregoing description, claims and drawings Features of the invention can be used both individually and in any combination Realization of the invention in its various embodiments of importance his.

Claims (2)

Plattenwärmeübertrager (20) mit einem Stapel (21) von Wärmeübertragerplatten (1, 2), die dauerhaft miteinander verbunden sind und zwischen denen getrennte Durchflußräume für wenigstens zwei Wärmetauscher-Fluide gebildet sind, dadurch gekennzeichnet, daß ein Teil der Wärmeübertragerplatten (1, 2) jeweils als eine einwandige Wärmeübertragerplatte (1) mit einem Plattenelement und ein anderer Teil der Wärmeübertragerplatten (1, 2) jeweils als eine doppelwandige Wärmeübertragerplatte (2) mit zwei Plattenelementen ausgeführt ist.Plate heat exchanger (20) with a stack (21) of heat exchanger plates (1, 2) which are permanently connected to one another and between which separate flow spaces for at least two heat exchanger fluids are formed, characterized in that part of the heat exchanger plates (1, 2) is designed as a single-walled heat exchanger plate (1) with a plate element and another part of the heat exchanger plates (1, 2) each as a double-walled heat exchanger plate (2) with two plate elements. Plattenwärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, daß zwischen den Wärmeübertragerplatten (1, 2) getrennte Durchflußräume für drei Wärmetauscher-Fluide gebildet sind.Plate heat exchanger according to claim 1, characterized in that separate flow spaces for three heat exchanger fluids are formed between the heat exchanger plates (1, 2).
EP04009741A 2003-05-08 2004-04-23 Plate heat exchanger with single and dopple wall plates Expired - Lifetime EP1475596B1 (en)

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DE10320812A DE10320812B4 (en) 2003-05-08 2003-05-08 Plate heat exchangers with single-walled and double-walled heat exchanger plates
DE10320812 2003-05-08

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EP (1) EP1475596B1 (en)
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Also Published As

Publication number Publication date
DE10320812A1 (en) 2004-11-25
US6973961B2 (en) 2005-12-13
EP1475596A3 (en) 2005-10-19
ATE479874T1 (en) 2010-09-15
CA2465441A1 (en) 2004-11-08
CN100443848C (en) 2008-12-17
EP1475596B1 (en) 2010-09-01
NZ532496A (en) 2005-03-24
DE10320812B4 (en) 2007-03-01
CN1550746A (en) 2004-12-01
DE502004011600D1 (en) 2010-10-14
US20040256083A1 (en) 2004-12-23
CN1847767A (en) 2006-10-18
CA2465441C (en) 2008-12-09
HK1092865A1 (en) 2007-02-16

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