EP1522812B1 - Plate heat exchanger for drying a gaseous medium - Google Patents
Plate heat exchanger for drying a gaseous medium Download PDFInfo
- Publication number
- EP1522812B1 EP1522812B1 EP04023607A EP04023607A EP1522812B1 EP 1522812 B1 EP1522812 B1 EP 1522812B1 EP 04023607 A EP04023607 A EP 04023607A EP 04023607 A EP04023607 A EP 04023607A EP 1522812 B1 EP1522812 B1 EP 1522812B1
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- European Patent Office
- Prior art keywords
- heat exchanger
- gas
- plate
- plates
- stack
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- 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.)
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Classifications
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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
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
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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
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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
- 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
Definitions
- the invention is in the field of plate heat exchangers for drying a gaseous medium, in particular air.
- Gaseous media for example air
- the gaseous medium usually has to fulfill certain properties for the production process, for example having a predetermined degree of purity or a minimum moisture content.
- Plate heat exchangers are known from the prior art, which are used to dry a gaseous medium, for example compressed air, so that the gaseous medium used as a process medium has only a predetermined moisture content.
- the gaseous medium is fed into the plate heat exchanger through an input port. Subsequently, the thus fed moist incoming gas stream flows through a gas-gas heat exchanger.
- the gas-gas heat exchanger is formed in the plate heat exchanger in a portion of a stack of plates interconnected to form flow areas between the plates.
- the incoming wet gas stream flows away from the input port and a dried feed gas stream, which can then be recycled to the production process, to an output port through separate flow areas in the plate stack.
- the moist input gas stream and the dried starting gas stream flow in countercurrent, on the one hand to pre-cool the moist inlet gas stream.
- the dried starting gas stream is heated by heat transfer from the moist input gas stream to the previously dried starting gas stream.
- the moist input gas stream in this case passes from the gas-gas heat exchanger into a gas-coolant heat exchanger in the plate stack, which likewise has a plurality of flow regions between the plates of the stack.
- the precooled input gas stream and a refrigerant flow countercurrently, so that the incoming wet gas stream is cooled, resulting in the subsequent convection of the moisture particles of the input gas stream, so that the input gas stream is dried.
- the dried starting gas stream formed in this way flows via an overflow component from the outlet of the gas-coolant heat exchanger to the gas-gas heat exchanger, where it is reheated by absorbing heat from the incoming inlet gas stream.
- the thus heated starting gas stream flows through the output port of the plate heat exchanger for further use.
- the overflow component must also meet high requirements with regard to pressure resistance.
- US 2003/0041619 A1 describes a device with an integrated gas drain and a cooling unit for removing moisture in various gases, especially natural gases.
- US 3,797,565 discloses a cooled air dryer with a heat exchanger.
- From the DE 43 42 598 A1 is a device for drying compressed air with a condenser for compressed air temperature control and a condensate discharge.
- US 5,275,233 describes a device for removing moisture from hot compressed gas.
- From the DE 197 37 205 A1 is a method for operating refrigerated air dryers out.
- the temperature in the inlet region for the compressed air to be dried is measured and supplied to an electronic evaluation and switching unit, which controls a refrigerant circuit for a heat exchanger unit as a function of this temperature in a refrigerated air dryer.
- From the DE 203 15 267 U1 is a device for cooling and drying of air, especially for refrigerant dryer of compressed air systems out.
- the object of the invention is therefore to provide a plate heat exchanger for drying a gaseous medium, which allows a high pressurization under operating conditions and holds this state, so that the safety standards are guaranteed.
- the invention includes the idea, in the plate heat exchanger for drying a gaseous medium, in particular air, which in a stack of plates comprises a gas-gas heat exchanger and a gas-refrigerant heat exchanger, a Matterströmbauteil in a flow connection between the outlet of the gas Coolant heat exchanger and the gas-gas heat exchanger by means of a stack of adjacent plates which are interconnected to form Studentsström Studen between the adjacent plates, wherein between facing side surfaces of the adjacent plates contact areas are formed, in which the facing Side surfaces are interconnected.
- a direct contact is made between the facing side surfaces of the adjacent plates of the overflow component, wherein the contact may optionally be mediated by a suitable connection means.
- An expedient embodiment of the invention provides that the adjacent plates are soldered together in the deflection member, whereby on the one hand a reliable solid connection of the adjacent plates is ensured. Moreover, in this way, for connecting the adjacent plates of the overflow component, the same manufacturing technology as used for connecting the plates of the stack in which the gas-gas heat exchanger and the gas-refrigerant heat exchanger are formed can be used.
- the contact areas in the overflow component comprise edge contact areas in which, optionally mediated by a connecting material, edge portions of the facing side surfaces of the adjacent panels touch.
- the contact areas in the overflow component comprise surface contact areas in which, optionally mediated by a connecting material in each case in a central region of the adjacent plates of a plate plane projecting portions of the facing side surfaces of the adjacent plates touch.
- the pressure resistance of the overflow component can be optimized, since direct connections between the facing side surfaces distributed over the adjacent plates are produced at selectable intervals, which supports the use of higher pressures during operation of the plate heat exchanger.
- the strength of the adjacent plates of the overflow component is improved in an advantageous embodiment of the invention in that the adjacent plates of the overflow component have an embossed surface structure at least in some areas.
- the surface stability of the adjacent plates of the overflow component is optimized.
- a space-saving arrangement of Matterströmbauteils in the formation of the plate heat exchanger is achieved in a preferred embodiment of the invention in that the Kochströmbauteil arranged on an outer plate of the stack of plates surface resting is. In this way, the shortest possible overflow connection between the outlet of the gas-refrigerant heat exchanger and the gas-gas heat exchanger is further promoted.
- a preferred development of the invention provides that between the overflow component and the outer plate of the stack of plates, a portion of the overflow regions is formed. In this way, the stack of plates facing outer plate of Kochströmbauteils itself is bordered on both sides of overflow areas.
- FIG. 1 shows a plate heat exchanger 1 for drying a gaseous medium, in particular air, in longitudinal section.
- the plate heat exchanger 1 comprises a stack 2 of a plurality of plates 3, which are soldered together in the embodiment in the conventional manner for soldered plate heat exchanger, so that between the plurality of plates 3 a plurality of flow regions 4 are formed in channel form.
- a gas-gas heat exchanger 6 is formed by means of the plurality of plates 3 and the flow areas 4.
- a humid input gas flow 7 which is fed via an input port 8a, flows downwardly in the flow regions 4 in countercurrent to an upward-flowing output gas flow 9.
- the moist incoming gas stream 7 flows between the plates 3 into a lower portion 10 of the plate heat exchanger 1, in which a gas-refrigerant heat exchanger 11 is formed.
- a coolant 12 is fed via a coolant connection 13 between the plates 3, so that the coolant 12 flows upwards between the plates 3, ie counter to the downwardly flowing, moist input gas flow 7.
- a coolant outlet 14 the coolant 12 leaves the plate heat exchanger 1 and is itself fed to a cooling.
- the moist incoming gas stream 7 is cooled below the predetermined dew point for the respective gaseous medium, so that moisture fractions condense and are deposited in a separator 15 in the lower portion 10 of the plate heat exchanger 1. Via an outlet opening 16, the condensed moisture particles can then be removed.
- the thus cooled and dried gaseous medium flows after the condensation process via an overflow 17 back into the gas-gas heat exchanger 6.
- an overflow 18 is arranged in which overflow 19 are formed through which the dried starting gas flow becomes.
- the Kochströmbauteil 18 is formed by means of a stack 20 of a plurality of plates 21, in which facing side surfaces are connected to each other by means of contact areas.
- the contact areas comprise edge contact areas and / or area contact areas in which, optionally mediated by a suitable connecting means, for example solder, touch the facing side faces.
- a suitable connecting means for example solder
- the plate heat exchanger 1 may be lined internally with a suitable material, for example a plastic which is resistant to the gaseous medium to be dried.
- moist compressed air can be dried, which is obtained in various manufacturing processes.
- the dried compressed air or dried in other cases gaseous starting medium are heated before leaving the plate heat exchanger 1 through an output terminal 8b in the gas-gas heat exchanger 5 in the upward flow by heat transfer from the wet inlet gas stream 7, so that with the aid of the plate heat exchanger 1 a the process conditions can be returned with respect to a predetermined minimum temperature adapted, heated gas stream.
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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)
- Drying Of Solid Materials (AREA)
- Fuel Cell (AREA)
Abstract
Description
Die Erfindung liegt auf dem Gebiet von Plattenwärmetauschern zum Trocknen eines gasförmigen Mediums, insbesondere Luft.The invention is in the field of plate heat exchangers for drying a gaseous medium, in particular air.
Gasförmige Medien, beispielsweise Luft, werden in sehr unterschiedlichen Produktionsprozessen als Prozeßmittel verwendet. Hierbei muß das gasförmige Medium üblicherweise bestimmte Eigenschaften für den Produktionsprozeß erfüllen, beispielsweise einen vorgegebenen Reinheitsgrad oder einen minimalen Feuchtigkeitsgehalt aufweisen. Aus dem Stand der Technik sind Plattenwärmetauscher bekannt, die genutzt werden, um ein gasförmiges Medium, beispielsweise Druckluft, zu trocknen, so daß das als Prozeßmittel verwendete gasförmige Medium lediglich einen vorgegebenen Feuchtigkeitsgehalt aufweist. Zu diesem Zweck wird das gasförmige Medium in den Plattenwärmetauscher durch einen Eingangsanschluß eingespeist. Anschließend durchströmt der so eingespeiste feuchte Eingangsgasstrom einen Gas-Gas-Wärmetauscher. Der Gas-Gas-Wärmetauscher ist in dem Plattenwärmetauscher in einem Abschnitt eines Stapels von Platten gebildet, die zum Ausbilden von Strömungsbereichen zwischen den Platten miteinander verbunden sind. Bei den bekannten Plattenwärmetauscher strömen der feuchte Eingangsgasstrom von dem Eingangsanschluß weg und ein getrockneter Ausgangsgasstrom, welcher den Produktionsprozeß dann wieder zugeführt werden kann, zu einem Ausgangsanschluß hin durch getrennte Strömungsbereiche in dem Plattenstapel. Der feuchte Eingangsgasstrom und der getrocknete Ausgangsgasstrom strömen im Gegenstrom, um einerseits den feuchten Eingangsgasstrom vorzukühlen. Andererseits wird der getrocknete Ausgangsgasstrom durch Wärmeübergang von dem feuchten Eingangsgasstrom auf den zuvor getrockneten Ausgangsgasstrom erwärmt.Gaseous media, for example air, are used as process agents in very different production processes. In this case, the gaseous medium usually has to fulfill certain properties for the production process, for example having a predetermined degree of purity or a minimum moisture content. Plate heat exchangers are known from the prior art, which are used to dry a gaseous medium, for example compressed air, so that the gaseous medium used as a process medium has only a predetermined moisture content. For this purpose, the gaseous medium is fed into the plate heat exchanger through an input port. Subsequently, the thus fed moist incoming gas stream flows through a gas-gas heat exchanger. The gas-gas heat exchanger is formed in the plate heat exchanger in a portion of a stack of plates interconnected to form flow areas between the plates. In the known plate heat exchangers, the incoming wet gas stream flows away from the input port and a dried feed gas stream, which can then be recycled to the production process, to an output port through separate flow areas in the plate stack. The moist input gas stream and the dried starting gas stream flow in countercurrent, on the one hand to pre-cool the moist inlet gas stream. On the other hand, the dried starting gas stream is heated by heat transfer from the moist input gas stream to the previously dried starting gas stream.
Der feuchte Eingangsgasstrom gelangt hierbei aus dem Gas-Gas-Wärmetauscher in einen Gas-Kühlmittel-Wärmetauscher in dem Plattenstapel, welcher ebenfalls mehrere Strömungsbereiche zwischen den Platten des Stapels aufweist. In dem Gas-Kühlmittel-Wärmetauscher strömen der vorgekühlte Eingangsgasstrom und ein Kühlmittel im Gegenstrom, so daß der feuchte Eingangsgasstrom abgekühlt wird, was zur anschließenden Konvensation der Feuchtigkeitsteilchen des Eingangsgasstroms führt, so daß der Eingangsgasstrom getrocknet wird. Der auf diese Weise gebildete getrocknete Ausgangsgasstrom strömt über ein Überströmbauteil vom Ausgang des Gas-Kühlmittel-Wärmetauschers zu dem Gas-Gas-Wärmetauscher, wo er durch Wärmeaufnahme aus dem einfließenden Eingangsgasstrom wieder aufgeheizt wird.The moist input gas stream in this case passes from the gas-gas heat exchanger into a gas-coolant heat exchanger in the plate stack, which likewise has a plurality of flow regions between the plates of the stack. In the gas-refrigerant heat exchanger, the precooled input gas stream and a refrigerant flow countercurrently, so that the incoming wet gas stream is cooled, resulting in the subsequent convection of the moisture particles of the input gas stream, so that the input gas stream is dried. The dried starting gas stream formed in this way flows via an overflow component from the outlet of the gas-coolant heat exchanger to the gas-gas heat exchanger, where it is reheated by absorbing heat from the incoming inlet gas stream.
Der so erwärmte Ausgangsgasstrom strömt über den Ausgangsanschluß des Plattenwärmetauschers zur weiteren Verwendung.The thus heated starting gas stream flows through the output port of the plate heat exchanger for further use.
Aufgrund der in dem Gas-Gas-Wärmetauscher und dem Gas-Kühlmittel-Wärmetauscher herrschenden Druckbedingungen muß auch das Überströmbauteil hohen Anforderungen bezüglich der Druckfestigkeit genügen.Due to the pressure conditions prevailing in the gas-gas heat exchanger and the gas-coolant heat exchanger, the overflow component must also meet high requirements with regard to pressure resistance.
Aus der
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Aufgabe der Erfindung ist es deshalb, einen Plattenwärmetauscher zum Trocknen eines gasförmigen Mediums anzugeben, welcher unter Betriebsbedingungen eine hohe Druckbeaufschlagung erlaubt und dieser Stand hält, so daß die Sicherheitsstandards gewährleistet sind.The object of the invention is therefore to provide a plate heat exchanger for drying a gaseous medium, which allows a high pressurization under operating conditions and holds this state, so that the safety standards are guaranteed.
Diese Aufgabe wird erfindungsgemäß durch einen Plattenwärmetauscher nach dem unabhängigen Anspruch 1 gelöst.This object is achieved by a plate heat exchanger according to the independent claim 1.
Die Erfindung umfaßt den Gedanken, bei dem Plattenwärmetauscher zum Trocknen eines gasförmigen Mediums, insbesondere Luft, welcher in einem Stapel von Platten einen Gas-Gas-Wärmetauscher und einen Gas-Kühlmittel-Wärmetauscher aufweist, ein Überströmbauteil in einer Strömungsverbindung zwischen dem Ausgang des Gas-Kühlmittel-Wärmetauschers und dem Gas-Gas-Wärmetauscher mit Hilfe eines Stapels von benachbarten Platten zu bilden, die zum Ausbilden von Überströmbereichen zwischen den benachbarten Platten miteinander verbunden sind, wobei zwischen sich zugewandten Seitenflächen der benachbarten Platten Kontaktbereiche gebildet sind, in denen die sich zugewandten Seitenflächen miteinander verbunden sind. Auf diese Weise wird ein direkter Kontakt zwischen den sich zugewandten Seitenflächen der benachbarten Platten des Überströmbauteils hergestellt, wobei der Kontakt wahlweise durch ein geeignetes Verbindungsmittel vermittelt sein kann. Diese Art der Verbindung zwischen zugewandten Seitenflächen der benachbarten Platten in dem Überströmbauteil erlaubt die Ausführung von Kontaktverbindungen, die eine hohe Druckbeaufschlagung in den Überströmbereichen ermöglichen, durch die der getrocknete Ausgangsgasstrom von dem Gas-Kühlmittel-Wärmetauscher zu dem Gas-Gas-Wärmetauscher strömt. Im Unterschied zu bekannten Plattenwärmetauschern, bei denen ein Überströmbauteil mit Hilfe einer Deck- und Bodenplatte gebildet ist, die mit Hilfe einer umlaufenden Wand verbunden sind, gewährleistet das Verbinden sich zugewandter Seitenflächen in Kontaktbereichen einen zuverlässigen Betrieb auch bei einer sehr hohen Druckbelastung, so daß ein höherer Grad an Betriebssicherheit erreicht wird.The invention includes the idea, in the plate heat exchanger for drying a gaseous medium, in particular air, which in a stack of plates comprises a gas-gas heat exchanger and a gas-refrigerant heat exchanger, a Überströmbauteil in a flow connection between the outlet of the gas Coolant heat exchanger and the gas-gas heat exchanger by means of a stack of adjacent plates which are interconnected to form Überströmbereichen between the adjacent plates, wherein between facing side surfaces of the adjacent plates contact areas are formed, in which the facing Side surfaces are interconnected. In this way, a direct contact is made between the facing side surfaces of the adjacent plates of the overflow component, wherein the contact may optionally be mediated by a suitable connection means. This type of connection between facing side surfaces of the adjacent plates in the overflow component allows the execution of contact connections, which allow a high pressurization in the overflow areas, through which the dried starting gas flow from the gas-refrigerant heat exchanger to the gas-gas heat exchanger. In contrast to known plate heat exchangers, in which a Überströmbauteil is formed by means of a cover and bottom plate, which are connected by means of a peripheral wall, the joining of facing side surfaces in contact areas ensures reliable operation even at a very high pressure load, so that a higher degree of operational safety is achieved.
Eine zweckmäßige Ausgestaltung der Erfindung sieht vor, daß die benachbarten Platten bei dem Umlenkbauteil miteinander verlötet sind, wodurch einerseits eine zuverlässige feste Verbindung der benachbarten Platten gewährleistet ist. Darüber hinaus kann auf diese Weise zum Verbinden der benachbarten Platten des Überströmbauteils die gleiche Herstellungstechnologie genutzt werden, wie sie für das Verbinden der Platten des Stapels üblicherweise verwendet wird, in welchem der Gas-Gas-Wärmetauscher und der Gas-Kühlmittel-Wärmetauscher gebildet sind.An expedient embodiment of the invention provides that the adjacent plates are soldered together in the deflection member, whereby on the one hand a reliable solid connection of the adjacent plates is ensured. Moreover, in this way, for connecting the adjacent plates of the overflow component, the same manufacturing technology as used for connecting the plates of the stack in which the gas-gas heat exchanger and the gas-refrigerant heat exchanger are formed can be used.
Bei einer bevorzugten Weiterbildung der Erfindung ist vorgesehen, daß die Kontaktbereiche bei dem Überströmbauteil Randkontaktbereiche umfassen, in denen sich, wahlweise vermittelt durch ein Verbindungsmaterial, Randabschnitte der sich zugewandten Seitenflächen der benachbarten Platten berühren. Auf diese Weise ist eine am Rand des Überströmbauteils umlaufende druckfeste Verbindung zwischen den benachbarten Platten des Stapels bei dem Überströmbauteil ermöglicht.In a preferred embodiment of the invention, it is provided that the contact areas in the overflow component comprise edge contact areas in which, optionally mediated by a connecting material, edge portions of the facing side surfaces of the adjacent panels touch. In this way, at the edge of Überströmbauteils circumferential pressure-resistant connection between the adjacent plates of the stack is made possible in the Überströmbauteil.
Zweckmäßig kann bei einer Ausführungsform der Erfindung vorgesehen sein, daß die Kontaktbereiche bei dem Überströmbauteil Flächenkontaktbereiche umfassen, in denen sich, wahlweise vermittelt durch ein Verbindungsmaterial jeweils in einem zentralen Bereich der benachbarten Platten von einer Plattenebene vorstehende Abschnitte der sich zugewandten Seitenflächen der benachbarten Platten berühren. Hierdurch kann die Druckfestigkeit des Überströmbauteils optimiert werden, da in wählbaren Abständen über die benachbarten Platten verteilt direkte Verbindungen zwischen den sich zugewandten Seitenflächen hergestellt werden, was die Nutzung höherer Drücke beim Betrieb des Plattenwärmetauschers unterstützt.Suitably, it may be provided in one embodiment of the invention that the contact areas in the overflow component comprise surface contact areas in which, optionally mediated by a connecting material in each case in a central region of the adjacent plates of a plate plane projecting portions of the facing side surfaces of the adjacent plates touch. As a result, the pressure resistance of the overflow component can be optimized, since direct connections between the facing side surfaces distributed over the adjacent plates are produced at selectable intervals, which supports the use of higher pressures during operation of the plate heat exchanger.
Die Festigkeit der benachbarten Platten des Überströmbauteils wird bei einer vorteilhaften Ausführungsform der Erfindung dadurch verbessert, daß die benachbarten Platten des Überströmbauteils zumindest in Teilbereichen eine geprägte Oberflächenstruktur aufweisen. Hierdurch wird insbesondere die Flächenstabilität der benachbarten Platten des Überströmbauteils optimiert.The strength of the adjacent plates of the overflow component is improved in an advantageous embodiment of the invention in that the adjacent plates of the overflow component have an embossed surface structure at least in some areas. As a result, in particular the surface stability of the adjacent plates of the overflow component is optimized.
Eine platzsparende Anordnung des Überströmbauteils bei der Ausbildung des Plattenwärmetauschers ist bei einer bevorzugten Ausführungsform der Erfindung dadurch erreicht, daß das Überströmbauteil auf einer Außenplatte des Stapels von Platten flächig aufliegend angeordnet ist. Auf diese Weise wird weiterhin eine möglichst kurze Überströmverbindung zwischen dem Ausgang des Gas-Kühlmittel-Wärmetauschers und dem Gas-Gas-Wärmetauscher gefördert.A space-saving arrangement of Überströmbauteils in the formation of the plate heat exchanger is achieved in a preferred embodiment of the invention in that the Überströmbauteil arranged on an outer plate of the stack of plates surface resting is. In this way, the shortest possible overflow connection between the outlet of the gas-refrigerant heat exchanger and the gas-gas heat exchanger is further promoted.
Eine weitergehende Nutzung der Löttechnologie, die üblicherweise zum Verbinden der Platten des Stapels des Plattenwärmetauschers genutzt wird, ist bei einer vorteilhaften Weiterbildung der Erfindung dadurch erreicht, daß das Überströmbauteil auf die Außenplatte des Stapels von Platten aufgelötet ist. Dieses gewährleistet darüber hinaus einen festen Sitz des Überströmbauteils an dem Plattenstapel des Plattenwärmetauschers.A further use of the soldering technology, which is usually used for connecting the plates of the stack of plate heat exchanger, is achieved in an advantageous development of the invention in that the overflow component is soldered onto the outer plate of the stack of plates. This also ensures a tight fit of the Überströmbauteils on the plate stack of the plate heat exchanger.
Zur materialsparenden Herstellung des Plattenwärmetauschers sieht eine bevorzugte Fortbildung der Erfindung vor, daß zwischen dem Überströmbauteil und der Außenplatte des Stapels von Platten ein Abschnitt der Überströmbereiche gebildet ist. Auf diese Weise wird die dem Stapel von Platten zugewandte Außenplatte des Überströmbauteils selbst beidseitig von Überströmbereichen eingefaßt.For material-saving production of the plate heat exchanger, a preferred development of the invention provides that between the overflow component and the outer plate of the stack of plates, a portion of the overflow regions is formed. In this way, the stack of plates facing outer plate of Überströmbauteils itself is bordered on both sides of overflow areas.
Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf eine Zeichnung näher erläutert. Hierbei zeigen:
- Figur 1
- einen Plattenwärmetauscher zum Trocknen eines gasförmigen Mediums im Längsschnitt.
- FIG. 1
- a plate heat exchanger for drying a gaseous medium in longitudinal section.
Nach dem Durchströmen des Gas-Gas-Wärmetauschers 5 strömt der feuchte Eingangsgasstrom 7 zwischen den Platten 3 in einen unteren Abschnitt 10 des Plattenwärmetauschers 1, in welchem ein Gas-Kühlmittel-Wärmetauscher 11 gebildet ist. In dem Gas-Kühlmittel-Wärmetauscher 11 wird ein Kühlmittel 12 über einen Kühlmittelanschluß 13 zwischen die Platten 3 eingespeist, so daß das Kühlmittel 12 zwischen den Platten 3 aufwärts strömt, d. h. dem abwärts strömenden, feuchten Eingangsgasstrom 7 entgegen. Über einen Kühlmittelausgang 14 verläßt das Kühlmittel 12 den Plattenwärmetauscher 1 und wird selbst wieder einer Kühlung zugeführt. In dem Gas-Kühlmittel-Wärmetauscher 11 wird der feuchte Eingangsgasstrom 7 unter den für das jeweilige gasförmige Medium vorgegebenen Taupunkt abgekühlt, so daß Feuchtigkeitsanteile kondensieren und in einem Abscheider 15 im unteren Abschnitt 10 des Plattenwärmetauschers 1 abgeschieden werden. Über eine Ausgangsöffnung 16 können die auskondensierten Feuchtigkeitsteilchen dann abgeführt werden.After flowing through the gas-
Das auf diese Weise gekühlte und getrocknete gasförmige Medium strömt nach dem Kondensationsvorgang über eine Überströmverbindung 17 zurück in den Gas-Gas-Wärmetauscher 6. In der Überströmverbindung 17 ist ein Überströmbauteil 18 angeordnet, in welchem Überströmbereiche 19 gebildet sind, durch die der getrocknete Ausgangsgasstrom geführt wird. Das Überströmbauteil 18 ist mit Hilfe eines Stapels 20 von mehreren Platten 21 gebildet, bei denen zugewandte Seitenflächen mit Hilfe von Kontaktbereichen miteinander verbunden sind. Die Kontaktbereiche umfassen Randkontaktbereiche und/oder Flächenkontaktbereiche , in denen sich, wahlweise vermittelt durch ein geeignetes Verbindungsmittel, beispielsweise Lot, die zugewandten Seitenflächen berühren. Auf diese Weise ist ein druckfestes Überströmbauteil 18 geschaffen. Zum Ausbilden der Flächenkontaktbereiche können insbesondere Abschnitte im zentralen Bereich der mehreren Platten 21 genutzt werden, in denen die mehreren Platten 21 Prägungen aufweisen, so daß sich Abschnitte der Prägungen benachbarter Platten berühren.The thus cooled and dried gaseous medium flows after the condensation process via an
Der Plattenwärmetauscher 1 kann Innen mit einem geeigneten Material ausgekleidet sein, beispielsweise einem Kunststoff, welches resistent gegenüber dem zu trocknenden gasförmigen Medium ist.The plate heat exchanger 1 may be lined internally with a suitable material, for example a plastic which is resistant to the gaseous medium to be dried.
Mit Hilfe des Plattenwärmetauschers 1 kann beispielsweise feuchte Druckluft getrocknet werden, die in verschiedenen Herstellungsprozessen anfällt. Die getrocknete Druckluft oder das in anderen Fällen getrocknete gasförmige Ausgangsmedium werden vor dem Verlassen des Plattenwärmetauschers 1 durch einen Ausgangsanschluß 8b in dem Gas-Gas-Wärmetauscher 5 beim Aufwärtsströmen durch Wärmeübertragung aus dem feuchten Eingangsgasstrom 7 wieder erwärmt, so daß mit Hilfe des Plattenwärmetauschers 1 ein den Prozeßbedingungen hinsichtlich einer vorgegebenen Mindesttemperatur angepaßter, erwärmter Gasstrom zurückgeführt werden kann.With the help of the plate heat exchanger 1, for example, moist compressed air can be dried, which is obtained in various manufacturing processes. The dried compressed air or dried in other cases gaseous starting medium are heated before leaving the plate heat exchanger 1 through an output terminal 8b in the gas-
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.The features of the invention disclosed in the foregoing description, in the claims and in the drawing may be of importance both individually and in any combination for the realization of the invention in its various embodiments.
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.The features of the invention disclosed in the foregoing description, in the claims and in the drawing may be of importance both individually and in any combination for the realization of the invention in its various embodiments.
Claims (8)
- A plate-type heat exchanger (1) for drying a gaseous medium, especially air, comprising a stack (2) of plates (3) which are interconnected to define flow spaces (4) between the plates (3), a gas-gas heat exchanger (6) being formed in one portion (5) of the stack, with a moist inlet gas stream (7) flowing away from an inlet gas connection (8a) and a dried outlet gas stream (9) flowing towards an outlet gas connection (8b), both flowing next to each other through separate flow spaces to exchange thermal energy, and a gas-coolant heat exchanger (11) being formed in another portion (10) of the stack, with a coolant (12) and the moist inlet gas stream (7) flowing next to each other through further separate flow spaces for cooling purposes, and a flow connection (17) being formed between an outlet of the gas-coolant heat exchanger (11) and the gas-gas heat exchanger (6) and including an overflow member (18) to guide the dried outlet gas stream (9) through the overflow member (18) from the outlet of the gas-coolant heat exchanger (11) to the gas-gas heat exchanger (6), characterized in that the overflow member (18) is formed of a stack (20) of adjacent plates (21) which are interconnected to define overflow spaces (19) between the adjacent plates (21), contact zones being established between side surfaces facing each other of the adjacent plates (21).
- The plate-type heat exchanger (1) as claimed in claim 1, characterized in that the adjacent plates (21) are soldered to one another at the overflow member (18).
- The plate-type heat exchanger (1) as claimed in claim 1 or 2, characterized in that the contact zones at the overflow member (18) include edge contact zones in which edge sections of the side surfaces facing each other of the adjacent plates (21) contact each other, optionally by way of a connecting material.
- The plate-type heat exchanger (1) according to anyone of the previous claims, characterized in that the contact zones at the overflow member (18) include areal contact zones where, in a central part each of the adjacent plates (21), sections projecting from a plane of a plate, presenting the side surfaces which face each other of adjacent plates, are in touch with each other, optionally by way of a connecting material.
- The plate-type heat exchanger (1) according to anyone of the previous claims, characterized in that the adjacent plates (21) of the overflow member (18) comprise an embossed surface structure at least in partial areas.
- The plate-type heat exchanger (1) according to anyone of the previous claims, characterized in that the overflow member (18) is arranged lying flat on an external plate of the stack (2) of plates (3).
- The plate-type heat exchanger (1) as claimed in claim 6, characterized in that the overflow member (18) is soldered to the external plate of the stack (2) of plates (3).
- The plate-type heat exchanger (1) as claimed in claim 6 or 7, characterized in that a portion of the overflow spaces (19) is defined between the overflow member (18) and the external plate of the stack (2) of plates (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10347880 | 2003-10-10 | ||
DE10347880A DE10347880B4 (en) | 2003-10-10 | 2003-10-10 | Plate heat exchanger for drying a gaseous medium |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1522812A2 EP1522812A2 (en) | 2005-04-13 |
EP1522812A3 EP1522812A3 (en) | 2007-11-21 |
EP1522812B1 true EP1522812B1 (en) | 2009-03-04 |
Family
ID=34306405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04023607A Not-in-force EP1522812B1 (en) | 2003-10-10 | 2004-10-04 | Plate heat exchanger for drying a gaseous medium |
Country Status (8)
Country | Link |
---|---|
US (1) | US7789128B2 (en) |
EP (1) | EP1522812B1 (en) |
CN (1) | CN100339674C (en) |
AT (1) | ATE424542T1 (en) |
DE (2) | DE10347880B4 (en) |
DK (1) | DK1522812T3 (en) |
ES (1) | ES2322584T3 (en) |
HK (1) | HK1078925A1 (en) |
Cited By (1)
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CN104006683A (en) * | 2014-05-01 | 2014-08-27 | 铜陵钱谊化工设备有限责任公司 | Plate heat exchanger |
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US20050189097A1 (en) * | 2004-03-01 | 2005-09-01 | The Boeing Company | Formed sheet heat exchanger |
ITPN20080042A1 (en) * | 2008-05-20 | 2009-11-21 | Parker Hiross Spa | COMPRESSED GAS DRYER REFRIGERATED WITH PERFECT HEAT EXCHANGERS |
EP2377596B9 (en) * | 2010-04-14 | 2016-04-13 | Kaeser Kompressoren Se | Refrigerant type dryer, in particular pressurised air refrigerant type dryer and heat exchanger for a refrigerant type dryer, in particular pressurised air refrigerant type dryer |
IT1403733B1 (en) * | 2011-02-07 | 2013-10-31 | Mta Spa | APPARATUS FOR GAS DRYING. |
JP5773353B2 (en) * | 2011-02-15 | 2015-09-02 | 忠元 誠 | Heat exchanger |
JP6616115B2 (en) * | 2015-07-30 | 2019-12-04 | 株式会社マーレ フィルターシステムズ | Heat exchanger |
JP6671170B2 (en) | 2015-12-28 | 2020-03-25 | 株式会社マーレ フィルターシステムズ | Heat exchanger |
AT518082B1 (en) * | 2016-03-31 | 2017-07-15 | Gerhard Kunze Dr | Air conditioning by multi-phase plate heat exchanger |
IT201700119692A1 (en) * | 2017-10-23 | 2019-04-23 | Ceccato Aria Compressa S R L | PERFECTED HEAT EXCHANGER AND AIR DRYING SYSTEM USING THE ABOVE HEAT EXCHANGER |
DE202019100507U1 (en) * | 2019-01-29 | 2020-05-12 | Akg Verwaltungsgesellschaft Mbh | Air cooling and drying device |
DE102019119124A1 (en) * | 2019-07-15 | 2021-01-21 | Bayerische Motoren Werke Aktiengesellschaft | Combination heat exchanger with a chiller and an internal heat exchanger as well as a cooling / cooling circuit system and a motor vehicle with one |
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DE10311602A1 (en) * | 2003-03-14 | 2004-09-23 | Agt Thermotechnik Gmbh | Heat exchanger for use in drying gas e.g. compressed air, has gas/cooling medium heat exchange unit to cool gas flowing through gas outlet side gaps defined by parallel stainless steel plates |
-
2003
- 2003-10-10 DE DE10347880A patent/DE10347880B4/en not_active Expired - Fee Related
-
2004
- 2004-10-04 DE DE502004009072T patent/DE502004009072D1/en not_active Expired - Fee Related
- 2004-10-04 AT AT04023607T patent/ATE424542T1/en not_active IP Right Cessation
- 2004-10-04 ES ES04023607T patent/ES2322584T3/en active Active
- 2004-10-04 EP EP04023607A patent/EP1522812B1/en not_active Not-in-force
- 2004-10-04 DK DK04023607T patent/DK1522812T3/en active
- 2004-10-08 US US10/962,379 patent/US7789128B2/en not_active Expired - Fee Related
- 2004-10-10 CN CNB2004100822515A patent/CN100339674C/en not_active Expired - Fee Related
-
2005
- 2005-10-13 HK HK05109027.3A patent/HK1078925A1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104006683A (en) * | 2014-05-01 | 2014-08-27 | 铜陵钱谊化工设备有限责任公司 | Plate heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
ES2322584T3 (en) | 2009-06-23 |
DE502004009072D1 (en) | 2009-04-16 |
US7789128B2 (en) | 2010-09-07 |
CN1707211A (en) | 2005-12-14 |
DE10347880A1 (en) | 2005-05-04 |
DE10347880B4 (en) | 2007-10-31 |
CN100339674C (en) | 2007-09-26 |
ATE424542T1 (en) | 2009-03-15 |
EP1522812A3 (en) | 2007-11-21 |
DK1522812T3 (en) | 2009-07-06 |
HK1078925A1 (en) | 2006-03-24 |
US20080210411A1 (en) | 2008-09-04 |
EP1522812A2 (en) | 2005-04-13 |
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