EP2389555B1 - Plate heat exchanger - Google Patents

Plate heat exchanger Download PDF

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Publication number
EP2389555B1
EP2389555B1 EP10732849.4A EP10732849A EP2389555B1 EP 2389555 B1 EP2389555 B1 EP 2389555B1 EP 10732849 A EP10732849 A EP 10732849A EP 2389555 B1 EP2389555 B1 EP 2389555B1
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EP
European Patent Office
Prior art keywords
flow
region
channel
heat exchanger
plate heat
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EP10732849.4A
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German (de)
French (fr)
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EP2389555A2 (en
Inventor
Jürgen RÖBEN
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Menerga GmbH
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Menerga GmbH
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Publication of EP2389555A2 publication Critical patent/EP2389555A2/en
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Publication of EP2389555B1 publication Critical patent/EP2389555B1/en
Priority to HRP20181760TT priority Critical patent/HRP20181760T1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—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 spaced plates with inserted elements
    • 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
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • 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
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0038—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for drying or dehumidifying gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
    • 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

Definitions

  • the invention relates to a plate heat exchanger in countercurrent with spaced plates, wherein alternately flows through the interposed plates, successive spaces once the heat-emitting fluid in one direction and in the adjacent space the heat-absorbing fluid in the opposite direction, and wherein the spaces in partial areas in a plurality of mutually parallel flow channels are divided in the flow direction.
  • Such a plate heat exchanger according to the preamble of claim 1 is known from JP 60 238689 A known. However, this known plate heat exchanger allows only a heat exchange in the cross flow.
  • German utility model 87 14 559 it is in itself a cross-flow heat exchanger known, which is composed of a stack of extruded web plates and the heat exchange between flowing media is used. It is accepted that due to the cross-flow, the transmission power is limited.
  • the object of the invention is to improve a plate heat exchanger of the type mentioned in its production and effectiveness. It is another object of the invention to improve a plate heat exchanger of the type mentioned so that in addition to the countercurrents cross or cross flows exist that allow more functions.
  • the channel-free regions in the flow direction have substantially the same length as the channel regions.
  • the fluid flowing therethrough is flowed through by a flow medium directed transversely to the flow. It is proposed that the fluid is treated by the flow medium directed transversely to the flow.
  • Such a design has all the advantages of a countercurrent plate heat exchanger and the additional benefits of treating the Fluids / the fluids (which flow in countercurrent) in the cross flow. This is a high efficiency of heat transfer with simultaneous, additional treatment of the fluids in particular in the form of dehumidification and / or cooling or heating of the fluid in the cross flow.
  • the width and height of the channels corresponds to the distance of the plates from one another and thus to the width of the intermediate spaces.
  • channels may be arranged in the flow region at the flow beginning and flow end in the interspace, if a channel-free region adjoins, and no channels are arranged, if a channel region adjoins.
  • the plates and / or channels made of plastic in particular consist of polypropylene.
  • the countercurrent plate heat exchanger is preferably made completely or in its essential parts of plastic.
  • the plate heat exchanger on a plurality of thin plates 1, which are parallel are arranged at equal intervals S and thus form between them spaces 2a, 2b, through which flow the two fluids.
  • the heat-emitting fluid flows through the remaining intermediate spaces 2b, the heat-absorbing fluid.
  • Each intermediate space 2a, 2b is divided in the flow direction into two different regions 3, 4, which have the same width or length L.
  • the space portion 3 is divided into a large number of channels 5, which are parallel to the flow direction 6 and the width B equal to the distance S of the plates 1 from each other and thus the width of the gap 2a, 2b, wherein the height H of each channel 5 in approximately corresponds to its width, so that the channel cross-section is preferably square.
  • the interval space 3 divided into channels is hereinafter called "channel area" 3.
  • the interspace regions 4 lying between the channel regions 3 are free of channels, so that they form large contiguous spaces. In the following they are called "channel-free areas" 4. Thus, within all gaps between two plates 2a, 2b, the channel regions 3 and the channel-free regions 4 alternate regularly. In this case, however, only a single channel region 3 and a single channel-free region 4 can be arranged within a gap.
  • a channel-free region 4 is located in the adjacent intermediate space next to a channel region 3 of a gap, and also adjacent to a channel-free region 4 in a gap a channel region 3 in the adjacent space.
  • the regions 3 and 4 lying next to one another transversely to the flow direction completely overlap, so that the change from region 3 to region 4 and from region 4 to region 3 always occurs at the same points 7 as Fig. 4 shows.
  • the channel-free regions 4 are accessible transversely to the flow direction on both sides (in particular at the top and bottom), so that the regions 4 are bilateral each form an entrance slot 8 and an exit slot 9 to allow a flow medium from slot 8 to slot 9 to flow through the channel-free area 4 can.
  • the flow medium thus crosses the fluid within the region 4 and thereby acts on the fluid. This can be done, inter alia, cooling, heating, dehumidifying and / or humidifying the fluid.
  • 2b channels 5 are arranged when a channel-free area 4 connects, and no channels 5 are arranged when a channel region 3 connects.

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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)

Description

Die Erfindung betrifft einen Plattenwärmeübertrager im Gegenstrom mit zueinander beabstandeten Platten, wobei abwechselnd durch die zwischen den Platten befindlichen, aufeinander folgenden Zwischenräume einmal das wärmeabgebende Fluid in einer Richtung und im benachbarten Zwischenraum das wärmeaufnehmende Fluid in entgegengesetzter Richtung strömt, und wobei die Zwischenräume in Teilbereichen in eine Vielzahl zueinander paralleler Strömungskanäle in Strömungsrichtung aufgeteilt sind.The invention relates to a plate heat exchanger in countercurrent with spaced plates, wherein alternately flows through the interposed plates, successive spaces once the heat-emitting fluid in one direction and in the adjacent space the heat-absorbing fluid in the opposite direction, and wherein the spaces in partial areas in a plurality of mutually parallel flow channels are divided in the flow direction.

Ein solcher Plattenwärmetauscher nach dem Oberbegriff Anspruchs 1 ist aus der JP 60 238689 A bekannt. Dieser bekannte Plattenwärmetauscher lässt aber nur einen Wärmeaustausch im Kreuzstrom zu.Such a plate heat exchanger according to the preamble of claim 1 is known from JP 60 238689 A known. However, this known plate heat exchanger allows only a heat exchange in the cross flow.

Aus dem deutschen Gebrauchsmuster 202008000496 U1 ist ein Plattenwärmeübertrager bekannt, bei dem die Zwischenräume zwischen den Platten Strömungskanäle bilden. Hierbei enden die Kanäle zu beiden Seiten in kanalfreie Bereiche, die als Verteilbereiche dienen.From the German utility model 202008000496 U1 a plate heat exchanger is known in which the spaces between the plates form flow channels. Here, the channels end on both sides in channel-free areas that serve as distribution areas.

Aus dem deutschen Gebrauchsmuster 87 14 559 ist es an sich ein Kreuzstromwärmetauscher bekannt, der aus einem Stapel von extrudierten Stegplatten zusammengesetzt ist und dem Wärmeaustausch zwischen strömenden Medien dient. Hierbei wird in Kauf genommen, dass aufgrund des Kreuzstroms die Übertragungsleistung begrenzt ist.From the German utility model 87 14 559 it is in itself a cross-flow heat exchanger known, which is composed of a stack of extruded web plates and the heat exchange between flowing media is used. It is accepted that due to the cross-flow, the transmission power is limited.

Aufgabe der Erfindung ist es, einen Plattenwärmeübertrager der eingangs genannten Art in seiner Herstellung und Wirksamkeit zu verbessern. Ferner ist es Aufgabe der Erfindung, einen Plattenwärmeübertrager der eingangs genannten Art so zu verbessern, dass zusätzlich zu den Gegenströmen Quer- bzw. Kreuzströme bestehen, die weitere Funktionen ermöglichen.The object of the invention is to improve a plate heat exchanger of the type mentioned in its production and effectiveness. It is another object of the invention to improve a plate heat exchanger of the type mentioned so that in addition to the countercurrents cross or cross flows exist that allow more functions.

Diese Aufgaben werden erfindungsgemäß dadurch gelöst,

  • dass die Zwischenräume jeweils so aufgeteilt sind, dass ein erster Zwischenraumbereich als "Kanalbereich" in Kanäle aufgeteilt ist und ein zweiter Zwischenraumbereich als "kanalfreier Bereich" keine Kanäle aufweist,
  • dass in dem Bereich, in dem ein Zwischenraum einen Kanalbereich aufweist der benachbarte Zwischenraum einen kanalfreien Bereich besitzt und in dem Bereich, in dem ein Zwischenraum einen kanalfreien Bereich aufweist der benachbarte Zwischenraum einen Kanalbereich besitzt und
  • dass am Strömungsanfang und/oder Strömungsende der Zwischenräume jeweils ein Strömungsbereich besteht, mit dem die Strömung des Fluids um 30 bis 60 Grad vorzugsweise um 45 Grad in derselben Ebene umgelenkt wird.
These objects are achieved according to the invention by
  • the spaces are each divided so that a first space area is divided into channels as a "channel area" and a second space area as a "channel-free area" has no channels,
  • that in the region in which a gap has a channel region, the adjacent gap has a channel-free region, and in the region in which a gap has a channel-free region, the adjacent gap has a channel region, and
  • in that there is in each case a flow region at the flow beginning and / or flow end of the intermediate spaces, with which the flow of the fluid is deflected by 30 to 60 degrees, preferably by 45 degrees in the same plane.

Diese abwechselnde Anordnung von Kanalbereichen und kanalfreien Bereichen führt in Verbindung mit der Gegenstromführung zu optimalen Wirkungsgraden der Wärmeübertragung. Hierbei sind die Vorteile gegeben, hoher Wirkungsgrad, geringe Außenabmessungen, einfache und kostengünstige Herstellung, einfache Montage und hohe Funktionssicherheit bei hoher Lebensdauer und Dichtigkeit.This alternating arrangement of channel regions and channel-free regions, in conjunction with the countercurrent flow, leads to optimum efficiencies of the heat transfer. Here are the advantages, high efficiency, small external dimensions, simple and inexpensive production, easy installation and high reliability with high durability and tightness.

Auch wird vorzugsweise vorgeschlagen, dass die kanalfreien Bereiche in Strömungsrichtung im Wesentlichen dieselbe Länge aufweisen wie die Kanalbereiche.It is also preferably proposed that the channel-free regions in the flow direction have substantially the same length as the channel regions.

Besonders vorteilhaft ist es, wenn in den kanalfreien Bereichen das dort hindurchströmende Fluid von einem quer zur Strömung gerichteten Strömungsmedium durchströmt wird. Hierbei wird vorgeschlagen, dass durch das quer zur Strömung gerichtete Strömungsmedium das Fluid behandelt wird. Eine solche Ausführung besitzt alle Vorteile eines Gegenstrom-Plattenwärmeübertragers und die zusätzlichen Vorteile der Behandlung des Fluids/der Fluide (die im Gegenstrom strömen) im Kreuzstrom. Damit ist ein hoher Wirkungsgrad der Wärmeübertragung bei gleichzeitigem, zusätzlichem Behandeln der Fluide insbesondere in Form eines Entfeuchtens und/oder Kühlens bzw. Erwärmens des Fluids im Kreuzstrom.It is particularly advantageous if, in the channel-free regions, the fluid flowing therethrough is flowed through by a flow medium directed transversely to the flow. It is proposed that the fluid is treated by the flow medium directed transversely to the flow. Such a design has all the advantages of a countercurrent plate heat exchanger and the additional benefits of treating the Fluids / the fluids (which flow in countercurrent) in the cross flow. This is a high efficiency of heat transfer with simultaneous, additional treatment of the fluids in particular in the form of dehumidification and / or cooling or heating of the fluid in the cross flow.

Ferner besteht der erhebliche Vorteil, dass durch den Kreuzstrom/die Kreuzströme die Zwischenräume des Plattenwärmeübertragers bei geringem technischem Aufwand gründlich gereinigt werden können. Und dies sogar während des Betriebes, d.h. ohne den Plattenwärmeübertrager stillsetzen zu müssen.Furthermore, there is the considerable advantage that the interstices of the plate heat exchanger can be thoroughly cleaned with little technical effort by the cross-flow / cross-flows. And this even during operation, i. without having to shut down the plate heat exchanger.

Vorzugsweise wird vorgeschlagen, dass die Breite und Höhe der Kanäle dem Abstand der Platten voneinander und damit der Breite der Zwischenräume entspricht. Auch können im Strömungsbereich am Strömungsanfang und Strömungsende im Zwischenraum Kanäle angeordnet sein, wenn ein kanalfreier Bereich anschließt, und keine Kanäle angeordnet sind, wenn ein Kanalbereich anschließt. Ferner wird vorteilhafterweise vorgeschlagen, dass die Platten und/oder Kanäle aus Kunststoff insbesondere aus Polypropylen bestehen.It is preferably proposed that the width and height of the channels corresponds to the distance of the plates from one another and thus to the width of the intermediate spaces. Also, channels may be arranged in the flow region at the flow beginning and flow end in the interspace, if a channel-free region adjoins, and no channels are arranged, if a channel region adjoins. Furthermore, it is advantageously proposed that the plates and / or channels made of plastic in particular consist of polypropylene.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen schematisch dargestellt und wird im Folgenden näher beschrieben. Es zeigen

Fig. 1
einen Schnitt durch einen Zwischenraum, parallel zu den Platten,
Fig. 2
einen entsprechenden Schnitt durch einen benachbarten Zwischenraum,
Fig. 3
einen Querschnitt durch den Plattenwärmeübertrager,
Fig. 4
einen Längsschnitt durch den Plattenwärmeübertrager.
An embodiment of the invention is shown schematically in the drawings and will be described in more detail below. Show it
Fig. 1
a section through a gap, parallel to the plates,
Fig. 2
a corresponding section through an adjacent gap,
Fig. 3
a cross section through the plate heat exchanger,
Fig. 4
a longitudinal section through the plate heat exchanger.

Der Gegenstrom- Plattenwärmeübertrager ist vorzugsweise vollständig oder in seinen wesentlichen Teilen aus Kunststoff gefertigt. Hierbei weist der Plattenwärmeübertrager eine Vielzahl von dünnen Platten 1 auf, die parallel zueinander in gleichen Abständen S angeordnet sind und damit zwischen sich Zwischenräume 2a, 2b bilden, durch die die beiden Fluide strömen. Durch jeden zweiten Zwischenraum 2a fließt das wärmeabgebende Fluid und durch die übrigen dazwischen liegenden Zwischenräume 2b das wärmeaufnehmende Fluid.The countercurrent plate heat exchanger is preferably made completely or in its essential parts of plastic. Here, the plate heat exchanger on a plurality of thin plates 1, which are parallel are arranged at equal intervals S and thus form between them spaces 2a, 2b, through which flow the two fluids. Through each second space 2a, the heat-emitting fluid flows through the remaining intermediate spaces 2b, the heat-absorbing fluid.

Jeder Zwischenraum 2a, 2b ist in Strömungsrichtung in zwei unterschiedliche Bereiche 3, 4 aufgeteilt, die dieselbe Breite bzw. Länge L besitzen. Der Zwischenraumbereich 3 ist in eine hohe Anzahl von Kanälen 5 aufgeteilt, die parallel zur Strömungsrichtung 6 liegen und deren Breite B gleich dem Abstand S der Platten 1 voneinander und damit der Breite des Zwischenraumes 2a, 2b entspricht, wobei die Höhe H jedes Kanals 5 in etwa seiner Breite entspricht, so dass der Kanalquerschnitt vorzugsweise quadratisch ist. Der in Kanäle aufgeteilte Zwischenraumbereich 3 wird im Folgenden "Kanalbereich" 3 genannt.Each intermediate space 2a, 2b is divided in the flow direction into two different regions 3, 4, which have the same width or length L. The space portion 3 is divided into a large number of channels 5, which are parallel to the flow direction 6 and the width B equal to the distance S of the plates 1 from each other and thus the width of the gap 2a, 2b, wherein the height H of each channel 5 in approximately corresponds to its width, so that the channel cross-section is preferably square. The interval space 3 divided into channels is hereinafter called "channel area" 3.

Die zwischen den Kanalbereichen 3 liegenden Zwischenraumbereiche 4 sind frei von Kanälen, so dass sie große zusammenhängende Räume bilden. Im Folgenden werden sie "kanalfreie Bereiche" 4 genannt. Somit wechseln innerhalb aller zwischen zwei Platten liegenden Zwischenräume 2a, 2b die Kanalbereiche 3 und die kanalfreien Bereiche 4 einander regelmäßig ab. Hierbei können aber auch innerhalb eines Zwischenraums nur ein einziger Kanalbereich 3 und ein einziger kanalfreier Bereich 4 angeordnet sein.The interspace regions 4 lying between the channel regions 3 are free of channels, so that they form large contiguous spaces. In the following they are called "channel-free areas" 4. Thus, within all gaps between two plates 2a, 2b, the channel regions 3 and the channel-free regions 4 alternate regularly. In this case, however, only a single channel region 3 and a single channel-free region 4 can be arranged within a gap.

Bei den nebeneinander liegenden Zwischenräumen 2a, 2b ist dafür gesorgt, dass seitlich neben einem Kanalbereich 3 eines Zwischenraumes ein kanalfreier Bereich 4 im benachbarten Zwischenraum liegt, und ferner neben einem kanalfreien Bereich 4 in einem Zwischenraum ein Kanalbereich 3 im benachbarten Zwischenraum liegt. Hierbei überdecken sich die quer zur Strömungsrichtung nebeneinander liegenden Bereiche 3 und 4 vollständig, so dass der Wechsel vom Bereich 3 zum Bereich 4 und vom Bereich 4 zum Bereich 3 stets an denselben Stellen 7 erfolgt, wie Fig. 4 zeigt.In the adjoining interspaces 2a, 2b it is ensured that a channel-free region 4 is located in the adjacent intermediate space next to a channel region 3 of a gap, and also adjacent to a channel-free region 4 in a gap a channel region 3 in the adjacent space. In this case, the regions 3 and 4 lying next to one another transversely to the flow direction completely overlap, so that the change from region 3 to region 4 and from region 4 to region 3 always occurs at the same points 7 as Fig. 4 shows.

Die kanalfreien Bereiche 4 sind quer zur Strömungsrichtung beidseitig (insbesondere oben und unten) zugänglich, so dass die Bereiche 4 beidseitig jeweils einen Eingangsschlitz 8 und einen Ausgangsschlitz 9 bilden, um ein Strömungsmedium von Schlitz 8 zu Schlitz 9 durch den kanalfreien Bereich 4 hindurchströmen lassen zu können. Das Strömungsmedium kreuzt somit das Fluid innerhalb des Bereichs 4 und wirkt hierdurch auf das Fluid ein. Hierdurch kann u.a. ein Kühlen, Erhitzen, Entfeuchten und/oder Befeuchten des Fluids erfolgen.The channel-free regions 4 are accessible transversely to the flow direction on both sides (in particular at the top and bottom), so that the regions 4 are bilateral each form an entrance slot 8 and an exit slot 9 to allow a flow medium from slot 8 to slot 9 to flow through the channel-free area 4 can. The flow medium thus crosses the fluid within the region 4 and thereby acts on the fluid. This can be done, inter alia, cooling, heating, dehumidifying and / or humidifying the fluid.

Am Strömungsanfang und/oder Strömungsende der Zwischenräume besteht jeweils ein Strömungsbereich 10, 11, mit dem die Strömung des Fluids um 30 bis 60 Grad vorzugsweise um 45 Grad in derselben Ebene umgelenkt wird. Hierbei sind im Strömungsbereich 10, 11 am Strömungsanfang 10 und Strömungsende 11 im Zwischenraum 2a, 2b Kanäle 5 angeordnet, wenn ein kanalfreier Bereich 4 anschließt, und keine Kanäle 5 angeordnet sind, wenn ein Kanalbereich 3 anschließt.At the flow beginning and / or flow end of the intermediate spaces there is in each case a flow region 10, 11 with which the flow of the fluid is deflected by 30 to 60 degrees, preferably by 45 degrees in the same plane. Here, in the flow area 10, 11 at the flow beginning 10 and flow end 11 in the space 2a, 2b channels 5 are arranged when a channel-free area 4 connects, and no channels 5 are arranged when a channel region 3 connects.

Claims (8)

  1. Plate heat exchanger in counterflow configuration, having plates which are spaced apart from one another, wherein the successive intermediate spaces situated between the plates are, in an alternating manner, flowed through by the heat-releasing fluid (F) in one direction (A) and, in the adjacent intermediate space, by the heat-absorbing fluid (F) in the opposite direction (B) and thus in counterflow, and wherein the intermediate spaces are, in sub-regions, divided into a multiplicity of mutually parallel flow channels in the flow direction, wherein
    • the intermediate spaces (2a, 2b) are each divided such that a first intermediate space region (2b) is, as a "channel region" (3), divided into channels (5) and a second intermediate space region (2a) has, as a "channel-free region" (4), no channels,
    • in the region in which an intermediate space has a channel region (3), the adjacent intermediate space has a channel-free region (4), and in the region in which an intermediate space has a channel-free region (4), the adjacent intermediate space has a channel region (3), and
    • characterized in that,
    at the flow start and/or flow end of the intermediate spaces, there is in each case a flow region (10, 11) by way of which the flow of the fluid is diverted through 30 to 60 degrees, preferably through 45 degrees, in the same plane.
  2. Plate heat exchanger according to Claim 1, characterized in that the channel-free regions (4) have substantially the same length (L) as the channel regions (3) in the flow direction.
  3. Plate heat exchanger according to Claim 1 or 2, characterized in that, in the channel-free regions (4), the fluid (F) which flows through there is flowed through by a flow medium (M) which is directed transversely to the flow.
  4. Plate heat exchanger according to Claim 3, characterized in that the fluid (F) is treated by way of the flow medium (M) directed transversely to the flow.
  5. Plate heat exchanger according to Claim 4, characterized in that the flow medium (M) cools and/or dehumidifies the fluid (F).
  6. Plate heat exchanger according to one of the preceding claims, characterized in that the width and height of the channels (5) correspond to the spacing of the plates (1) to one another and thus to the width of the intermediate spaces (2a, 2b).
  7. Plate heat exchanger according to one of the preceding claims, characterized in that, in the flow region (10, 11) at the flow start (10) and flow end (11) in the intermediate space (2a, 2b), channels (5) are arranged if a channel-free region (4) is adjacent thereto, and no channels (5) are arranged if a channel region (3) is adjacent thereto.
  8. Plate heat exchanger according to one of the preceding claims, characterized in that the plates (1) and/or channels (5) consist of plastic, in particular of polypropylene.
EP10732849.4A 2009-07-13 2010-06-22 Plate heat exchanger Active EP2389555B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20181760TT HRP20181760T1 (en) 2009-07-13 2018-10-25 Plate heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009033157A DE102009033157A1 (en) 2009-07-13 2009-07-13 Plate heat exchangers
PCT/EP2010/003819 WO2011006579A2 (en) 2009-07-13 2010-06-22 Plate heat exchanger

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EP2389555A2 EP2389555A2 (en) 2011-11-30
EP2389555B1 true EP2389555B1 (en) 2018-08-01

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EP (1) EP2389555B1 (en)
DE (1) DE102009033157A1 (en)
HR (1) HRP20181760T1 (en)
WO (1) WO2011006579A2 (en)

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EP2389555A2 (en) 2011-11-30
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WO2011006579A2 (en) 2011-01-20
DE102009033157A1 (en) 2011-01-27

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