EP2674718B1 - Asymmetric plate heat exchanger - Google Patents
Asymmetric plate heat exchanger Download PDFInfo
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- EP2674718B1 EP2674718B1 EP13172071.6A EP13172071A EP2674718B1 EP 2674718 B1 EP2674718 B1 EP 2674718B1 EP 13172071 A EP13172071 A EP 13172071A EP 2674718 B1 EP2674718 B1 EP 2674718B1
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- Prior art keywords
- heat transfer
- plate
- transfer plates
- truncated pyramids
- heat exchanger
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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
- 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
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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
- F28F3/044—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 pontual, e.g. dimples
Definitions
- the invention relates to a plate heat exchanger in asymmetric design.
- Plate heat exchangers or transporters typically have a stack of heat transfer plates disposed between one or more restriction plates such that passageways for heat exchange fluids are formed between the heat transfer plates in the stack.
- the passageways providing passages communicate with ports through which heat exchange fluids are supplied and removed during operation. Between the heat exchanger fluids flowing through the plate heat exchanger in operation, heat energy is transferred via the heat transfer plates for cooling and / or heating.
- the plates have a respective profiling.
- meandering structures can be provided. It has also been proposed to provide a profiling with truncated pyramids (cf. J. Enhanced Heat Transfer, 9: 171-179, 2002 ). With the help of the truncated pyramids concave and convex shaped flow sections were produced in the stack of heat transfer plates with special plate assembly.
- the passages for the heat exchanger fluids produced on the stacked plates by means of a similar structure of all the truncated pyramids are designed for the same volume flows in each case. They each have the same volume and have the same flow area.
- plate heat exchangers in asymmetric design or construction provide passages in the stack of heat transfer plates which differ in the different volume or mass flows of the heat exchange fluids flowing through the plate heat exchanger. Different volumes of the passages can be produced in particular by means of differing flow cross sections. In contrast, in the plate heat exchangers in symmetrical design, the passages are configured to allow the same volume or mass flows of the heat exchanger fluids, which is why the passages usually have a uniform flow cross-section exhibit. Asymmetrical passages with different volume flows can be realized, for example, in that the passages have different passage areas transversely to the flow. Plate heat exchangers in asymmetric design are particularly suitable to meet different application conditions when using the plate heat exchangers, in particular the fact that the volume or mass flows differ significantly in the passages.
- a plate heat exchanger in asymmetric design is known.
- the stacked heat transfer plates have major protrusions formed as truncated cones. Between adjacent main projections intermediate projections may be arranged.
- the object of the invention is to provide a plate heat exchanger in asymmetric design in which the asymmetric passages in the stack of heat transfer plates can be flexibly provided for different applications.
- an asymmetric or plate type plate heat exchanger which includes a stack of heat transfer plates with passageways for heat exchange fluids sealed together in the stack.
- the heat transfer plates each have a profiling, with an array of projecting from the plane of the truncated pyramidal stumps and in between in the plane of the plate arranged base portions is formed.
- the base portions comprise the area between the pyramidal stumps protruding from the plane of the plate, which in turn have a plateau or a top surface due to their stump formation on the side opposite the heat transfer plate.
- the passageways forming passages in the stack of heat transfer plates are made asymmetrical, allowing for different volume or mass flows.
- the base sections of an upper heat transfer plate are disposed on the truncated pyramids of an underlying heat transfer plate, preferably in the region of the top surface of the truncated pyramids. wherein a partial or complete overlap of the base sections may be provided with the associated truncated pyramids.
- truncated pyramid in the form used here includes stump-like structures with any desired surface area, including, in particular, round, angular, oval or circular bases. Such structures are also referred to as truncated cone.
- heat transfer plates having a first truncated pyramidal shape and a second truncated pyramidal shape different from the first truncated shape.
- the profiling comprises truncated pyramids with one or more concave side surfaces.
- the side surfaces of the truncated pyramid concern the wall sections of the respective truncated structure, which extends from the plane of the plate of the heat transfer plate to the plateau or to the top surface of the truncated pyramid. All the truncated pyramids of a heat transfer plate can be formed with one or more concave side surfaces.
- the profiling comprises truncated pyramids with one or more convex side surfaces.
- asymmetric passages are made in the stack of heat transfer plates by alternately stacking heat transfer plates in which plates with truncated pyramids with concave side surfaces and plates with truncated pyramids with convex side surfaces alternate. All of the truncated pyramids of a heat transfer plate can be formed with one or more convex side surfaces.
- a concave side surface a heat transfer plate and a convex side surface of a heat transfer plate (opposite plate) adjacent thereto are arranged opposite each other to form an asymmetrical passage.
- an embodiment provides that in at least one of the heat transfer plates, the truncated pyramids all have the same truncated pyramid shape.
- the truncated pyramid shape is determined in particular by means of the following parameters: height, base surface shape and formation of the side surfaces, for example concave or convex.
- a further development provides that in at least one of the heat transfer plates, the truncated pyramids are formed with at least two different truncated pyramidal shapes.
- at least two heat transfer plates, which are arranged adjacent in the stack of heat transfer plates have the same profiling.
- heat transfer plates arranged adjacent to one another in the stack are rotated relative to one another by 180 °.
- a development may provide that the adjacent heat transfer plates are joined together in the region of the support of the base sections on the truncated pyramids.
- the joining of the heat transfer plates is carried out for example by means of soldering or welding.
- plate heat exchangers are formed in brazed or welded design or construction.
- the truncated pyramids have a base area selected from the following group of base areas: polygon or polygon, square, square, triangle, circle and ellipse.
- the bases of the truncated pyramids of a heat transfer plate can all be the same.
- a heat transfer plate may have bases of different shapes. In a stack of heat transfer plates, all plates may have truncated cones of the same footprint. It can also be provided that truncated cones with different base surface shapes are arranged in the plates of a stack.
- An embodiment provides that in at least one of the heat transfer plates, the profiling is designed as a regular arrangement of truncated pyramids.
- a further embodiment provides that in at least one of the heat transfer plates, a plateau width of the truncated pyramids is substantially equal to the width of the base sections between the truncated pyramids. If the truncated pyramids have a round shape in the area of the top surface, the diameter of the round top surface can be substantially equal to the width of the overlying base sections.
- An embodiment may provide that in at least one of the heat transfer plates profiling has a meandering profiling.
- the at least one heat transfer plate one or more profiling sections with truncated cones on the one hand and one or more profiling sections with meandering or herringbone profiling on the other hand combined, the latter can be provided, for example, in inflow and / or distribution areas of the plate stack.
- the profiling of the heat transfer plates is designed as an embossing pattern.
- the profiling is hereby produced by embossing, in particular using a stamping die, for example in heat transfer plates made of metal.
- Fig. 1 shows a perspective view of a stack of heat transfer plates 1 for a plate heat exchanger or transformer, which are provided with a profiling 2, such that truncated pyramids 3 protrude from a plane of the plate 4.
- Base sections 5 run in the plane of the plate 4 between the truncated pyramids 3.
- Breakthroughs 6 serve in the stack of heat transfer plates 1 in forming a plate heat exchanger for connecting a line system, via which heat exchange fluids are supplied and removed.
- the profiling 2 is formed with a regular arrangement of the truncated pyramids 3.
- at least the truncated pyramids 3 of the heat transfer plate arranged at the top of the stack are of similar design.
- the truncated pyramids 3 have convex or concave side surfaces 7, 8, as shown in the perspective views of a respective truncated pyramid in the 3 and 4 demonstrate.
- the convex and concave side surfaces 7, 8 extend from the bottom 9 a to the top surface (plateau) 9 b of the truncated pyramid 3.
- asymmetric passages can be made in the stack of heat transfer plates 1, as exemplified by the schematic representation in FIG Fig. 5 shows.
- a heat transfer plate 11 with concave truncated pyramids 11a is arranged on a lower heat transfer plate 10 with convex truncated pyramids 10a.
- a heat transfer plate 12 with convex truncated pyramids 12a is then followed again by a heat transfer plate 12 with convex truncated pyramids 12a, followed by a heat transfer plate 13 with concave truncated pyramids 13a.
- a profiling with different shapes of truncated pyramids on the same heat transfer plate 1 in particular to make inflow and / or distribution areas of the passageways in the stack of heat transfer plates so that a uniform flow distribution as possible Passage is achieved, in particular to use the heat transfer surfaces in the stack of heat transfer plates 1 optimized.
- a heat transfer plate 1 can also be provided to use on a heat transfer plate 1 one or more profiling areas with truncated pyramids of the same or different shape and one or more other profiling areas in which maander-shaped or fishbone-shaped profilings are formed.
- the combination of the different profilings makes it possible, for example, to form as uniform as possible a flow distribution in the passage in the inflow and / or distribution regions of the passages in the stack of heat transfer plates. In this way, the heat transfer surfaces in the stack of heat transfer plates 1 can be used optimally.
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- 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 Plattenwärmetauscher in asymmetrischer Ausführung.The invention relates to a plate heat exchanger in asymmetric design.
Plattenwärmetauscher oder -übertrager verfügen üblicherweise über einen Stapel von Wärmeübertragungsplatten, die zwischen einer oder mehreren Begrenzungsplatten angeordnet sind, derart, dass zwischen den Wärmeübertragungsplatten in dem Stapel gegeneinander abgeschlossene Durchgänge für Wärmetauscherfluide gebildet sind. Die Durchflusskanäle bereitstellenden Durchgänge stehen mit Anschlüssen in Verbindung, über die im Betrieb Wärmetauscherfluide zugeführt und abgeführt werden. Zwischen den den Plattenwärmetauscher im Betrieb durchströmenden Wärmetauscherfluide wird über die Wärmeübertragungsplatten Wärmeenergie übertragen zum Kühlen und / oder Erwärmen.Plate heat exchangers or transporters typically have a stack of heat transfer plates disposed between one or more restriction plates such that passageways for heat exchange fluids are formed between the heat transfer plates in the stack. The passageways providing passages communicate with ports through which heat exchange fluids are supplied and removed during operation. Between the heat exchanger fluids flowing through the plate heat exchanger in operation, heat energy is transferred via the heat transfer plates for cooling and / or heating.
Zum Ausbilden der Durchgänge im Stapel von Wärmeübertragungsplatten verfügen die Platten über eine jeweilige Profilierung. Hierbei können mäandrierende Strukturen vorgesehen sein. Auch wurde vorgeschlagen, eine Profilierung mit Pyramidenstümpfen vorzusehen (vgl.
Plattenwärmetauscher in asymmetrischer Ausführung oder Bauweise sehen im Unterschied zu solchen symmetrischen Plattenwärmetauschern Durchgänge in dem Stapel von Wärmeübertragungsplatten vor, die sich durch unterschiedliche Volumen- oder Massenströme der den Plattenwärmetauscher durchströmende Wärmetauscherfluide unterscheiden. Unterschiedliche Volumina der Durchgänge sind insbesondere mittels sich unterscheidender Durchströmquerschnitte herstellbar. Bei den Plattenwärmetauschern in symmetrischer Ausführung sind die Durchgänge demgegenüber konfiguriert, gleiche Volumen- oder Massenströme der Wärmetauscherfluide zuzulassen, weshalb die Durchgänge üblicherweise einen einheitlichen Durchströmquerschnitt aufweisen. Asymmetrische Durchgänge mit unterschiedlichen Volumenströmen können beispielsweise dadurch realisiert werden, dass die Durchgänge quer zur Strömung unterschiedliche Durchgangsflächen aufweisen. Plattenwärmetauscher in asymmetrischer Ausführung sind besonders geeignet, unterschiedlichen Anwendungsbedingungen beim Einsatz der Plattenwärmetauscher gerecht zu werden, insbesondere dadurch, dass sich die Volumen- oder Massenströme in den Durchgängen deutlich unterscheiden.In contrast to such symmetrical plate heat exchangers, plate heat exchangers in asymmetric design or construction provide passages in the stack of heat transfer plates which differ in the different volume or mass flows of the heat exchange fluids flowing through the plate heat exchanger. Different volumes of the passages can be produced in particular by means of differing flow cross sections. In contrast, in the plate heat exchangers in symmetrical design, the passages are configured to allow the same volume or mass flows of the heat exchanger fluids, which is why the passages usually have a uniform flow cross-section exhibit. Asymmetrical passages with different volume flows can be realized, for example, in that the passages have different passage areas transversely to the flow. Plate heat exchangers in asymmetric design are particularly suitable to meet different application conditions when using the plate heat exchangers, in particular the fact that the volume or mass flows differ significantly in the passages.
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Aufgabe der Erfindung ist es, einen Plattenwärmetauscher in asymmetrischer Ausführung zu schaffen, bei dem die asymmetrischen Durchgänge im Stapel von Wärmeübertragungsplatten flexibel für unterschiedliche Anwendungszwecke bereitgestellt werden können.The object of the invention is to provide a plate heat exchanger in asymmetric design in which the asymmetric passages in the stack of heat transfer plates can be flexibly provided for different applications.
Diese Aufgabe wird erfindungsgemäß durch einen Plattenwärmetauscher in asymmetrischer Ausführung nach dem unabhängigen Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand von abhängigen Unteransprüchen.This object is achieved by a plate heat exchanger in asymmetric design according to the
Nach einem Aspekt ist ein Plattenwärmetauscher in asymmetrischer Ausführung oder Bauweise geschaffen, welcher einen Stapel von Wärmeübertragungsplatten aufweist, mit denen im Stapel gegeneinander abgeschlossene Durchgänge für Wärmetauscherfluide gebildet sind. Die Wärmeübertragungsplatten weisen jeweils eine Profilierung auf, die mit einer Anordnung von aus der Plattenebene hervorstehenden Pyramidenstümpfen und hierzwischen in der Plattenebene angeordneten Basisabschnitten gebildet ist. Die Basisabschnitte umfassen den Bereich zwischen den aus der Plattenebene hervorstehenden Pyramidenstümpfen, welche ihrerseits aufgrund ihrer Stumpfausbildung auf der gegenüber der Wärmeübertragungsplatte distalen Seite ein Plateau oder eine Deckfläche aufweisen. Die Durchflusskanäle bildenden Durchgänge in dem Stapel von Wärmeübertragungsplatten sind asymmetrisch ausgeführt, nämlich unterschiedliche Volumen- oder Massenströme zulassend. Bei benachbarten Wärmeübertragungsplatten sind in dem Stapel von Wärmeübertragungsplatten die Basisabschnitte einer oberen Wärmeübertragungsplatte auf den Pyramidenstümpfen einer darunterliegenden Wärmeübertragungsplatte angeordnet, vorzugsweise im Bereich der Deckfläche der Pyramidenstümpfe, wobei eine teilweise oder vollständige Überlappung der Basisabschnitte mit den zugeordneten Pyramidenstümpfen vorgesehen sein kann.In one aspect, there is provided an asymmetric or plate type plate heat exchanger which includes a stack of heat transfer plates with passageways for heat exchange fluids sealed together in the stack. The heat transfer plates each have a profiling, with an array of projecting from the plane of the truncated pyramidal stumps and in between in the plane of the plate arranged base portions is formed. The base portions comprise the area between the pyramidal stumps protruding from the plane of the plate, which in turn have a plateau or a top surface due to their stump formation on the side opposite the heat transfer plate. The passageways forming passages in the stack of heat transfer plates are made asymmetrical, allowing for different volume or mass flows. In adjacent heat transfer plates, in the stack of heat transfer plates, the base sections of an upper heat transfer plate are disposed on the truncated pyramids of an underlying heat transfer plate, preferably in the region of the top surface of the truncated pyramids. wherein a partial or complete overlap of the base sections may be provided with the associated truncated pyramids.
Der Begriff Pyramidenstumpf in der hier verwendeten Form umfasst stumpfartige Strukturen mit beliebiger Grundfläche, wozu insbesondere auch runde, eckige, ovale oder kreisförmige Grundflächen gehören. Derartige Strukturen werden auch als Kegelstumpf bezeichnet.The term truncated pyramid in the form used here includes stump-like structures with any desired surface area, including, in particular, round, angular, oval or circular bases. Such structures are also referred to as truncated cone.
Das Vorsehen der Profilierung mit den Pyramidenstümpfen und hierzwischen angeordneten Basisabschnitten sowie deren Anordnung, derart, dass die Basisabschnitte der oberen Wärmeübertragungsplatte auf den Pyramidenstümpfen der darunterliegenden Wärmeübertragungsplatte angeordnet sind, ermöglicht eine flexible und vielgestaltige Ausbildung asymmetrischer Durchgänge in dem Stapel von Wärmeübertragungsplatten. Flexibel kann so auf unterschiedliche Einsatzanforderungen für den jeweiligen Plattenwärmetauscher reagiert werden.The provision of the profiling with the truncated pyramidal stumps and base portions therebetween, as well as their arrangement such that the base portions of the upper heat transfer plate are disposed on the truncated pyramids of the underlying heat transfer plate, enables flexible and multi-faceted formation of asymmetrical passages in the stack of heat transfer plates. In this way, it is possible to react flexibly to different application requirements for the respective plate heat exchanger.
Es ist vorgesehen, abwechselnd Wärmeübertragungsplatten zu stapeln, die eine erste Pyramidenstumpfform und eine zweite Pyramidenstumpfform, die von der ersten Stumpfform verschieden ist, aufweisen.It is contemplated to alternately stack heat transfer plates having a first truncated pyramidal shape and a second truncated pyramidal shape different from the first truncated shape.
Die Profilierung umfasst Pyramidenstümpfe mit einer oder mehreren konkaven Seitenflächen. Die Seitenflächen des Pyramidenstumpfes betreffen die Wandabschnitte der jeweiligen Stumpfstruktur, welche sich von der Plattenebene der Wärmeübertragungsplatte zum Plateau oder zur Deckfläche des Pyramidenstumpfes erstreckt. Es können alle Pyramidenstümpfe einer Wärmeübertragungsplatte mit einer oder mehreren konkaven Seitenflächen gebildet sein.The profiling comprises truncated pyramids with one or more concave side surfaces. The side surfaces of the truncated pyramid concern the wall sections of the respective truncated structure, which extends from the plane of the plate of the heat transfer plate to the plateau or to the top surface of the truncated pyramid. All the truncated pyramids of a heat transfer plate can be formed with one or more concave side surfaces.
Die Profilierung umfasst Pyramidenstümpfe mit einer oder mehreren konvexen Seitenflächen. Auf effiziente Art und Weise sind asymmetrische Durchgänge in dem Stapel von Wärmeübertragungsplatten hergestellt, indem Wärmeübertragungsplatten wechselweise gestapelt werden, bei denen sich Platten mit Pyramidenstümpfen mit konkaven Seitenflächen und Platten mit Pyramidenstümpfen mit konvexen Seitenflächen abwechseln. Es können alle Pyramidenstümpfe einer Wärmeübertragungsplatte mit einer oder mehreren konvexen Seitenflächen gebildet sein. Eine konkave Seitenfläche einer Wärmeübertragungsplatte und eine konvexe Seitenflächen einer hierzu benachbarten Wärmeübertragungsplatte (gegenüberliegende Platte) sind zur Ausbildung eines asymmetrischen Durchgangs einander gegenüberliegend angeordnet.The profiling comprises truncated pyramids with one or more convex side surfaces. In an efficient manner, asymmetric passages are made in the stack of heat transfer plates by alternately stacking heat transfer plates in which plates with truncated pyramids with concave side surfaces and plates with truncated pyramids with convex side surfaces alternate. All of the truncated pyramids of a heat transfer plate can be formed with one or more convex side surfaces. A concave side surface a heat transfer plate and a convex side surface of a heat transfer plate (opposite plate) adjacent thereto are arranged opposite each other to form an asymmetrical passage.
Eine Ausführungsform sieht vor, dass bei zumindest einer der Wärmeübertragungsplatten die Pyramidenstümpfe alle dieselbe Pyramidenstumpfform aufweisen. Die Pyramidenstumpfform wird insbesondere mittels der folgenden Parameter bestimmt: Höhe, Grundflächenform sowie Ausbildung der Seitenflächen, zum Beispiel konkav oder konvex.
Bevorzugt sieht eine Fortbildung vor, dass bei zumindest einer der Wärmeübertragungsplatten die Pyramidenstümpfe mit wenigstens zwei unterschiedlichen Pyramidenstumpfformen gebildet sind.
Bei einer Ausgestaltung kann vorgesehen sein, dass zumindest zwei Wärmeübertragungsplatten, die in dem Stapel von Wärmeübertragungsplatten benachbart angeordnet sind, dieselbe Profilierung aufweisen. Bei dieser Ausführungsform kann vorgesehen sein, dass im Stapel benachbart angeordnete Wärmeübertragungsplatten zueinander um 180° gedreht sind.
Eine Weiterbildung kann vorsehen, dass die benachbarten Wärmeübertragungsplatten im Bereich der Auflage der Basisabschnitte auf den Pyramidenstümpfen miteinander gefügt sind. Das Fügen der Wärmeübertragungsplatten ist beispielsweise mittels Löten oder Schweißen ausgeführt. Auf diese Weise sind Plattenwärmetauscher in gelöteter oder geschweißter Ausführung oder Bauweise gebildet.
Bei einer Ausgestaltung kann vorgesehen sein, dass die Pyramidenstümpfe eine Grundfläche ausgewählt aus der folgenden Gruppe von Grundflächen aufweisen: Mehr- oder Vieleck, Viereck, Quadrat, Dreieck, Kreis und Ellipse. Die Grundflächen der Pyramidenstümpfe einer Wärmeübertragungsplatte können alle gleich sein. Auch kann eine Wärmeübertragungsplatte Grundflächen unterschiedlicher Form aufweisen. In einem Stapel von Wärmeübertragungsplatten können alle Platten Kegelstümpfe gleicher Grundfläche aufweisen. Auch kann vorgesehen sein, dass in den Platten eines Stapels Kegelstümpfe mit unterschiedlichen Grundflächenformen angeordnet sind.An embodiment provides that in at least one of the heat transfer plates, the truncated pyramids all have the same truncated pyramid shape. The truncated pyramid shape is determined in particular by means of the following parameters: height, base surface shape and formation of the side surfaces, for example concave or convex.
Preferably, a further development provides that in at least one of the heat transfer plates, the truncated pyramids are formed with at least two different truncated pyramidal shapes.
In one embodiment it can be provided that at least two heat transfer plates, which are arranged adjacent in the stack of heat transfer plates, have the same profiling. In this embodiment, it can be provided that heat transfer plates arranged adjacent to one another in the stack are rotated relative to one another by 180 °.
A development may provide that the adjacent heat transfer plates are joined together in the region of the support of the base sections on the truncated pyramids. The joining of the heat transfer plates is carried out for example by means of soldering or welding. In this way, plate heat exchangers are formed in brazed or welded design or construction.
In one embodiment, it may be provided that the truncated pyramids have a base area selected from the following group of base areas: polygon or polygon, square, square, triangle, circle and ellipse. The bases of the truncated pyramids of a heat transfer plate can all be the same. Also, a heat transfer plate may have bases of different shapes. In a stack of heat transfer plates, all plates may have truncated cones of the same footprint. It can also be provided that truncated cones with different base surface shapes are arranged in the plates of a stack.
Eine Ausführungsform sieht vor, dass bei zumindest einer der Wärmeübertragungsplatten die Profilierung als regelmäßige Anordnung von Pyramidenstümpfen ausgeführt ist.An embodiment provides that in at least one of the heat transfer plates, the profiling is designed as a regular arrangement of truncated pyramids.
Bevorzugt sieht eine Fortbildung vor, dass bei zumindest einer der Wärmeübertragungsplatten eine Plateaubreite der Pyramidenstümpfe im Wesentlichen gleich der Breite der Basisabschnitte zwischen den Pyramidenstümpfen ist. Weisen die Pyramidenstümpfe im Bereich der Deckfläche eine runde Form auf, kann der Durchmesser der runden Deckfläche im Wesentlichen gleich der Breite der aufliegenden Basisabschnitte sein.Preferably, a further embodiment provides that in at least one of the heat transfer plates, a plateau width of the truncated pyramids is substantially equal to the width of the base sections between the truncated pyramids. If the truncated pyramids have a round shape in the area of the top surface, the diameter of the round top surface can be substantially equal to the width of the overlying base sections.
Eine Ausgestaltung kann vorsehen, dass bei zumindest einer der Wärmeübertragungsplatten die Profilierung eine mäanderförmige Profilierung aufweist. Hier sind bei der zumindest einen Wärmeübertragungsplatte ein oder mehrere Profilierungsabschnitte mit Kegelstümpfen einerseits und ein oder mehrere Profilierungsabschnitte mit mäanderförmiger oder fischgrätenförmiger Profilierung andererseits kombiniert, wobei letztere zum Beispiel in Einström- und / oder Verteilbereichen des Plattenstapels vorgesehen sein kann.An embodiment may provide that in at least one of the heat transfer plates profiling has a meandering profiling. Here, in the at least one heat transfer plate one or more profiling sections with truncated cones on the one hand and one or more profiling sections with meandering or herringbone profiling on the other hand combined, the latter can be provided, for example, in inflow and / or distribution areas of the plate stack.
Bei einer Ausgestaltung kann vorgesehen sein, dass die Profilierung der Wärmeübertragungsplatten als Prägemuster ausgeführt ist. Die Profilierung wird hierbei mittels Prägeverfahren hergestellt, insbesondere unter Nutzung eines Prägestempels, zum Beispiel bei Wärmeübertragungsplatten aus Metall.In one embodiment, it may be provided that the profiling of the heat transfer plates is designed as an embossing pattern. The profiling is hereby produced by embossing, in particular using a stamping die, for example in heat transfer plates made of metal.
Im Folgenden werden weiter Ausführungsbeispiele unter Bezugnahme auf Figuren einer Zeichnung näher erläutert. Hierbei zeigen:
- Fig. 1
- eine perspektivische Darstellung eines Abschnitts eines Stapels von Wärmeübertragungsplatten für einen Plattenwärmetauscher,
- Fig. 2
- eine schematische Darstellung zur Anordnung von Pyramidenstümpfen mit quadratischer Grundfläche in einem Stapel von Wärmeübertragungsplatten,
- Fig. 3
- eine perspektivische Darstellung eines Pyramidenstumpfes mit konvexen Seitenflächen,
- Fig. 4
- eine perspektivische Darstellung eines Pyramidenstumpfes mit konkaven Seitenflächen und
- Fig. 5
- eine schematische Darstellung von asymmetrischen Durchgängen in einem Stapel von Wärmeübertragungsplatten, die mit Pyramidenstümpfen gebildet sind, welche abwechselnd konkave und konvexe Seitenflächen aufweisen.
- Fig. 1
- 3 is a perspective view of a portion of a stack of heat transfer plates for a plate heat exchanger;
- Fig. 2
- a schematic representation of the arrangement of square truncated pyramidal stumps in a stack of heat transfer plates,
- Fig. 3
- a perspective view of a truncated pyramid with convex side surfaces,
- Fig. 4
- a perspective view of a truncated pyramid with concave side surfaces and
- Fig. 5
- a schematic representation of asymmetric passages in a stack of heat transfer plates, which are formed with truncated pyramids, which have alternately concave and convex side surfaces.
Bei der gezeigten Ausführungsform ist die Profilierung 2 mit einer regelmäßigen Anordnung der Pyramidenstümpfe 3 gebildet. In dem dargestellten Beispiel sind zumindest die Pyramidenstümpfe 3 der im Stapel oben angeordneten Wärmeübertragungsplatte gleichartig ausgeführt.In the embodiment shown, the profiling 2 is formed with a regular arrangement of the
In dem Stapel von Wärmeübertragungsplatten 1 sind zueinander benachbart angeordnete Wärmeübertragungsplatten zueinander um 180° gedreht, sodass die Basisabschnitte 5 einer oberen Wärmeübertragungsplatte auf den Pyramidenstümpfen 3 der darunter befindlichen Wärmeübertragungsplatte angeordnet sind. Dieses zeigt schematisch
Es kann nun vorgesehen sein, dass die Pyramidenstümpfe 3 über konvexe oder konkave Seitenflächen 7, 8 verfügen, wie dies die perspektivischen Darstellungen eines jeweiligen Pyramidenstumpfes in den
Bei Verwendung derartiger Profilierungen mit Pyramidenstümpfen 3 mit konkaver und konvexer Seitenflächenausbildung 7, 8 können asymmetrische Durchgänge in dem Stapel von Wärmeübertragungsplatten 1 hergestellt werden, wie sie beispielhaft die schematische Darstellung in
Unabhängig von den vorgenannten Ausführungsbeispielen kann vorgesehen sein, ein Profilierung mit unterschiedlichen Formen von Pyramidenstümpfen auf ein und derselben Wärmeübertragungsplatte 1 zu nutzen, um insbesondere Einström- und / oder Verteilbereiche der Durchgangskanäle in dem Stapel von Wärmeübertragungsplatten so zu gestalten, dass eine möglichst gleichmäßige Strömungsverteilung im Durchgang erreicht wird, insbesondere um die wärmeübertragenden Flächen im Stapel von Wärmeübertragungsplatten 1 optimiert zu nutzen.Regardless of the aforementioned embodiments can be provided to use a profiling with different shapes of truncated pyramids on the same
Auch kann vorgesehen sein, auf einer Wärmeübertragungsplatte 1 einen oder mehrere Profilierungsbereiche mit Pyramidenstümpfen gleicher oder unterschiedlicher Form und einen oder mehrere andere Profilierungsbereiche zu nutzen, in denen maänderförmige oder fischgrätenförmige Profilierungen gebildet sind. Die Kombination der unterschiedlichen Profilierungen ermöglicht es zum Beispiel, in Einström- und / oder Verteilbereichen der Durchgänge in dem Stapel von Wärmeübertragungsplatten eine möglichst gleichmäßige Strömungsverteilung im Durchgang auszubilden. Auf diese Weise können die wärmeübertragenden Flächen im Stapel von Wärmeübertragungsplatten 1 optimiert genutzt werden.It can also be provided to use on a
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 Ausführungen von Bedeutung sein.The features of the invention disclosed in the above description, the claims and the drawings may be of importance both individually and in any combination for the realization of the invention in its various embodiments.
Claims (10)
- A plate heat exchanger in asymmetrical design, comprising a stack of heat transfer plates by means of which passages closed with respect to each other for heat exchanger fluids are formed, wherein- the heat transfer plates have a profile (2) formed with an arrangement of truncated pyramids (3) protruding from the plate plane (4) and base portions (5) disposed therebetween in the plate plane (4), and- the passages are designed asymmetrically, namely such that they allow different volume flows by arranging for adjacent heat transfer plates in the stack of heat transfer plates, the base sections (5) of an upper heat transfer plate on truncated pyramids (3) of an underlying heat transfer plate,characterized in that- the profile (2) has truncated pyramids with concave side faces (8) which extend from the plate plane (4) oft he heat transfer plates to the plateau oft he truncated pyramids;- the profile (2) has truncated pyramids with convex side faces (7) which extend from the plate plane (4) of the heat transfer plates to the plateau of the truncated pyramids and- one heat transfer plate having truncated pyramids with concave side faces (8) and one heat transfer plate having truncated pyramids with convex side faces (7) are arranged alternately in the stack.
- The plate heat exchanger according to claim 1, characterized in that for at least one oft he heat transfer plates, the truncated pyramids (3) all have the same truncated pyramid shape.
- The plate heat exchanger according to claim 1 or 2, characterized in that for at least one of the heat transfer plates, the truncated pyramids (3) are formed with at least two different truncated pyramid shapes.
- The plate heat exchanger according to at least one of the preceding claims, characterized in that at least two heat transfer plates arranger adjacent to each other in the stack of heat transfer plates have the same profile (2), wherein heat transfer plates arranged adjacent to each other in the stack are rotated 180° relative to each other.
- The plate heat exchanger according to at least one of the preceding claims, characterized in that the adjacent heat transfer plates are joined together in the region in which the base sections (5) are supported in the truncated pyramids.
- The plate heat exchanger according to at east one of the preceding claims, characterized in that the truncated pyramids (3) have a base area selected from the following groups of base areas: polygon, rectangle, square, triangle, circle and ellipse.
- The plate heat exchanger according to at least one of the preceding claims, characterized in that for at least one of the heat transfer plates, the profile (2) is designed as a regular arrangement of truncated pyramids (3).
- The plate heat exchanger according to at least one of the preceding claims, characterized in that for at least one of the heat transfer plates, a plateau width of the truncated pyramids (3) is substantially equal tot he width of the base sections (5) between truncated pyramids (3).
- The plate heat exchanger according to at least one of the preceding claims, characterized in that at least one of the heat transfer plates, the profile (2) has a meander-shaped profile.
- The plate heat exchanger according to at least on of the preceding claims, characterized in that the profile (2) of the heat transfer plates is designed as an embossing pattern.
Applications Claiming Priority (1)
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DE102012105144.5A DE102012105144B4 (en) | 2012-06-14 | 2012-06-14 | Plate heat exchanger in asymmetrical design |
Publications (3)
Publication Number | Publication Date |
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EP2674718A2 EP2674718A2 (en) | 2013-12-18 |
EP2674718A3 EP2674718A3 (en) | 2015-08-26 |
EP2674718B1 true EP2674718B1 (en) | 2018-10-03 |
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EP13172071.6A Active EP2674718B1 (en) | 2012-06-14 | 2013-06-14 | Asymmetric plate heat exchanger |
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EP (1) | EP2674718B1 (en) |
DE (1) | DE102012105144B4 (en) |
DK (1) | DK2674718T3 (en) |
ES (1) | ES2705226T3 (en) |
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DE102014109608A1 (en) * | 2014-07-09 | 2016-01-14 | Khs Gmbh | Heat treatment apparatus and method for heat treatment |
DE102019008914A1 (en) * | 2019-12-20 | 2021-06-24 | Stiebel Eltron Gmbh & Co. Kg | Heat pump with optimized refrigerant circuit |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI47141C (en) * | 1960-03-16 | 1973-09-10 | Rosenblad | Heat exchange system for two heat exchanging media of different pressures. |
GB1197933A (en) * | 1967-09-18 | 1970-07-08 | Apv Co Ltd | Improvements in or relating to Plate Type Heat Exchangers |
US4084635A (en) * | 1976-08-18 | 1978-04-18 | Midland-Ross Corporation | Heat recovery and heat distributing apparatus |
JPH0612222B2 (en) * | 1985-08-12 | 1994-02-16 | 三菱重工業株式会社 | Heat transfer tube with cross groove on inner wall |
JP3747780B2 (en) * | 1998-09-16 | 2006-02-22 | 株式会社日立製作所 | Heat exchanger |
JP2000193390A (en) * | 1998-12-25 | 2000-07-14 | Daikin Ind Ltd | Plate-type heat exchanger |
JP2004028385A (en) * | 2002-06-24 | 2004-01-29 | Hitachi Ltd | Plate type heat exchanger |
SE528629C2 (en) * | 2004-09-08 | 2007-01-09 | Ep Technology Ab | Groove pattern for heat exchanger |
JP4666463B2 (en) | 2005-01-25 | 2011-04-06 | 株式会社ゼネシス | Heat exchange plate |
JP2007010202A (en) | 2005-06-29 | 2007-01-18 | Xenesys Inc | Heat exchange unit |
DE102009060395A1 (en) * | 2009-12-22 | 2011-06-30 | Wieland-Werke AG, 89079 | Heat exchanger tube and method for producing a heat exchanger tube |
RU2511779C2 (en) * | 2010-11-19 | 2014-04-10 | Данфосс А/С | Heat exchanger |
-
2012
- 2012-06-14 DE DE102012105144.5A patent/DE102012105144B4/en active Active
-
2013
- 2013-06-14 DK DK13172071.6T patent/DK2674718T3/en active
- 2013-06-14 ES ES13172071T patent/ES2705226T3/en active Active
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DE102012105144B4 (en) | 2021-12-02 |
DE102012105144A1 (en) | 2013-12-19 |
DK2674718T3 (en) | 2019-01-28 |
EP2674718A3 (en) | 2015-08-26 |
EP2674718A2 (en) | 2013-12-18 |
ES2705226T3 (en) | 2019-03-22 |
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