EP0839308A1 - Plate heat exchanger - Google Patents
Plate heat exchangerInfo
- Publication number
- EP0839308A1 EP0839308A1 EP96907253A EP96907253A EP0839308A1 EP 0839308 A1 EP0839308 A1 EP 0839308A1 EP 96907253 A EP96907253 A EP 96907253A EP 96907253 A EP96907253 A EP 96907253A EP 0839308 A1 EP0839308 A1 EP 0839308A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- plates
- plate
- plate heat
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- 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
-
- 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
- F28D9/0012—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 apparatus having an annular form
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S165/00—Heat exchange
- Y10S165/916—Oil cooler
Definitions
- the invention relates to a plate heat exchanger which consists of a stack of plates of the same size and with a uniform profile, in which neighboring plates alternately turn their front sides or rear sides, and in which the plates are welded or welded at the points where they touch and support one another are soldered. Areas of application of this heat exchanger are above all the cooling and freezing technology with evaporating and condensing media, machine cooling and heat transfer processes in which a medium freely enters the heat exchanger from a container.
- heat-emitting and heat-absorbing media flow through channels with an approximately constant cross section. This cross section can fluctuate around an average, e.g. due to the installation of obstacles which increase the turbulence of the flow and thus improve the heat transfer, it neither increases nor decreases continuously during the heat exchange. This applies to the known tubular heat exchangers as well as to known spiral and plate heat exchangers.
- the principle applies to accommodate the largest possible heat exchanger areas in the smallest possible construction volume and to achieve high heat transfer rates with the lowest possible pressure losses.
- the profiling usually consists of a wave-shaped embossing with wave crests and wave troughs of equal cross-section transverse to the direction of propagation of the waves.
- the straight wave-shaped profiles form an acute angle with the longitudinal axes of the plates, so that in the case of plates which are rotated by 180 ° with respect to one another, the waves intersect and keep the plates at a distance.
- the medium flowing in it is subject to a constant change of direction with a periodically changing flow cross-section. This results in larger heat exchanger surfaces and turbulence, which de improve the heat transfer.
- the oil filter is connected axially by a screw connection to the heat exchanger and the same to the engine, as in DE-OS 3440064, the
- the object of the invention is to create a compact plate heater with a low power-to-weight ratio, which offers a growing flow cross-section to a medium that expands under the influence of heat and a cooling medium with a decreasing volume a decreasing flow cross-section, and thereby the flow stabilizes and promotes heat transfer.
- this plate heat exchanger is intended to improve the conditions for connecting a filter.
- a heat exchanger which consists of a stack of equally large and uniformly profiled annular plates which are turned 180 ° against one another and therefore alternately face their front sides and their rear sides, has a circumference heat-emitting medium is supplied, which radially flows through every second gap between the plates until it flows out through the channel enclosed by annular plates, while a heat-absorbing medium which is supplied and discharged via flanged ring lines radially on the other side of each plate Flows around countercurrent.
- the plates are profiled in such a way that adjacent plates either touch and support themselves with their inner and outer flat edges or with their profiles and enclose a gap between them.
- Wavy profiles are preferably embossed which run in a spiral, in particular in the form of an Archimedean spiral.
- the cross section of the waves is arbitrary. It can be sinusoidal or trapezoidal. Each spiral begins and ends in a plateau stamped up to the height of the wave crests, in the middle of which a breakthrough is formed through the plate.
- the plateaus and the openings formed in them preferably have an oval cross section on the inner edge, the longitudinal axis of which extends radially, and on hen and soldered in the stack with heat.
- the plate heat exchanger is enclosed by a housing in which a filter, for example an oil filter, can advantageously be arranged, which encloses the entire circumference of the heat exchanger and therefore has a filter surface that is many times larger than known axially connected filters.
- This filter is characterized by lower pressure losses and a longer service life. With this arrangement of the filter, the vibrations transmitted by the engine are dampened and hardly affect the stability of the heat exchanger.
- FIG. 1 shows the view of a plate and FIG. 2 shows the radial section through a plate heat exchanger without a housing,
- the plate heat exchanger consists of a stack of equally sized and similarly profiled annular plates 1, in the adjacent plates 1 are turned against each other by 180 ° and either their front sides 2 or their back sides 3 face.
- each plate 1 enclose the heat exchanger surface 6, which in the form of a
- Shaft 7 is profiled, the wave crests of which run like an Archimedean spiral and each begin and end in a plateau 8 which is stamped up to the height of the wave crest, in the middle of which a breakthrough 9 is formed through the plate 1.
- the outer diameter of the plate 1 is many times larger than its inner diameter in order to obtain a large heat exchanger surface 6.
- adjacent plates 1 either the contacting flat edges 4 and 5 or the contacting plateaus 8 and the intersecting shafts 7 are welded at their points of contact by means of a laser.
- the axial channels 10 and 11 formed by the openings 9 are connected to the ring lines 12 and 13 on the end faces of the plate heat exchanger.
- the plate heat exchanger is enclosed by a housing 14, in the circumference of which a filter 15 is arranged.
- the filter 15 is supplied with hot oil from the engine via line 16, which flows through the filter 15 into the plate heat exchanger and is returned to the engine via line 17 after cooling.
- the oil is cooled by water, which is supplied and discharged via the ring lines 12 and 13.
Landscapes
- 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)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
PCT No. PCT/DE96/00487 Sec. 371 Date Dec. 29, 1997 Sec. 102(e) Date Dec. 29, 1997 PCT Filed Mar. 15, 1996 PCT Pub. No. WO96/29558 PCT Pub. Date Sep. 26, 1996The invention embodies a plate heat exchanger consisting of a stack of ring-shaped plates of identical size and profile, which face each other with their front and rear sides alternately. The heat exchanger surfaces enclosed between an inside and an outside flat edge have a predominantly wave-shaped profile. The waves trace a spiral path and each of them begins and ends in a plateau impressed up to the height of the wave peaks. The plate has a hole in the middle of each plateau. The plates are welded or soldered in the places where they touch in the stack. A heat-releasing medium is introduced to the plate heat exchanger from the periphery and flows through it radially. In the radial counterflow, a heat-absorbing medium flows through the heat exchanger and is introduced and flows away via ring tubes on the front sides. The heat-absorbing, expanding medium has a flow cross section which increases with the radius, and the heat-releasing medium which falls in volume has a decreasing flow cross section. As distinct from known oil coolers, the filer is not connected axially but accommodated in the housing periphery. The result is that the filter has a larger surface and thus also a longerservice life. This also reduces the dynamic load on the heat exchanger (FIG. 2).
Description
Pia tenwärmetauscherPia ten heat exchanger
Die Erfindung betrifft einen Plattenwärmetauscher, der aus einem Stapel gleichgroßer und gleichförmig profilierterter Platten besteht, in dem benachbarte Platten sich abwechselnd ihre Vorderseiten oder ihre Rückseiten zuwenden, und in dem die Platten an den Stellen, an denen sie sich berühren und gegeneinander abstützen, verschweißt oder verlötet sind. Anwendungsgebiete dieses Wärmetauschers sind vor allem die Kühl- und Gefriertechnik mit verdampfenden und kondensieren¬ den Medien, die Maschinenkühlung sowie Wärmeübertragungsvor¬ gänge, bei denen ein Medium frei aus einem Behälter in den Wärmetauscher eintritt. Bei bekannten Wärmetauschern durchströmen wärmeabgebende und wärmeaufnehmende Mediem Kanäle mit annähernd konstantem Quer¬ schnitt. Dieser Querschnitt kann um einen Mittelwert schwan¬ ken, z.B. durch den Einbau von Hindernissen, welche die Tur¬ bulenz der Strömung erhöhen und damit den Wärmeübergang ver¬ bessern sollen, er nimmt aber während des Wärmeaustausches weder kontinuierlich ab noch zu. Das gilt für die bekannten Röhrenwärmetauscher ebenso wie für bekannte Spiral- und Plat¬ tenwärmetauscher.The invention relates to a plate heat exchanger which consists of a stack of plates of the same size and with a uniform profile, in which neighboring plates alternately turn their front sides or rear sides, and in which the plates are welded or welded at the points where they touch and support one another are soldered. Areas of application of this heat exchanger are above all the cooling and freezing technology with evaporating and condensing media, machine cooling and heat transfer processes in which a medium freely enters the heat exchanger from a container. In known heat exchangers, heat-emitting and heat-absorbing media flow through channels with an approximately constant cross section. This cross section can fluctuate around an average, e.g. due to the installation of obstacles which increase the turbulence of the flow and thus improve the heat transfer, it neither increases nor decreases continuously during the heat exchange. This applies to the known tubular heat exchangers as well as to known spiral and plate heat exchangers.
Für Wärmetauscher gilt das Prinzip, möglichst große Wärmetau¬ scherflächen in einem möglichst kleinen Bauvolumen unterzu- bringen und große Wärmeübertragungsleistungen bei möglichst geringen Druckverlusten zu erreichen.For heat exchangers, the principle applies to accommodate the largest possible heat exchanger areas in the smallest possible construction volume and to achieve high heat transfer rates with the lowest possible pressure losses.
In den DE-PS 669442 und 862757 wird dieses Prinzip durch übereiandergeschichtete Platten realisiert, zwischen denen für jedes der am Wärmetausch beteiligte Medium ein in Form einer Spirale verlaufender Kanal angeordnet ist. Die Medien sind gezwungen, die Kanäle in ihrer ganzen Länge zu durch¬ laufen. Dabei ist kein gleichmäßiger Wärmeübergang mit einem hohen Wirkungsgrad der Wärmeübertragung zu erreichen, weil bei der sich herausbildenden laminaren Strömung eine Grenz-
Schicht an den Wandungen entsteht, welche den Wärmeübergang behindert .In DE-PS 669442 and 862757, this principle is realized by stacked plates, between which a channel running in the form of a spiral is arranged for each of the media involved in the heat exchange. The media are forced to run through the entire length of the channels. It is not possible to achieve a uniform heat transfer with a high degree of heat transfer efficiency because a limit in the laminar flow that develops Layer on the walls is created, which hinders the heat transfer.
Um den Wärmeübergang zu verbessern, wurden Überströmöffnungen in die spiralig gewundenen Trennwände (DE-PS 2615977) oder axial in jede zweiten Platte des Wärmetauschers (DE-PS 3210168) eingebracht. Der Fertigungsaufwand und der Materialeinsatz bei derartigen Wärmetauschern ist jedoch sehr hoch, ohne daß der Wirkungsgrad durch diese Maßnahmen wesentlich verbessert wird. Mit dem Wärmetauscher nach der DE-OS 3827828 sollte das Lei¬ stungsgewicht soweit verbessert werden, daß sogar ein Einsatz in der Raumfahrt in Erwägung gezogen wird. Dabei wird ein Medium durch spiralförmig angeordnete Rohre geleitet, während das andere Medium diese Rohre radial vom Umfang ins Zentrum umströmt, in dem ein geringerer Druck als am Umfang herrscht. Auch bei diesem Wärmetauscher überwiegt in den Rohrleitungen die laminare Strömung, bei der der Wärmeübergang relativ ge¬ ring ist. Als man erkannt hatte, daß Turbulenzen den Wärmeübergang för- dern, wurde die Strömung durch den Einbau von Hindernissen turbulenter gestaltet.In order to improve the heat transfer, overflow openings were made in the spirally wound partition walls (DE-PS 2615977) or axially in every second plate of the heat exchanger (DE-PS 3210168). The manufacturing outlay and the use of materials in such heat exchangers is, however, very high without the efficiency being significantly improved by these measures. With the heat exchanger according to DE-OS 3827828, the power weight should be improved to such an extent that even use in space travel is considered. One medium is passed through spirally arranged pipes, while the other medium flows around these pipes radially from the circumference to the center, in which there is less pressure than at the circumference. In this heat exchanger, too, the laminar flow prevails in the pipelines, in which the heat transfer is relatively low. When it was recognized that turbulence promoted heat transfer, the flow was made more turbulent by installing obstacles.
Bei Plattenwärmetauschern erfolgte dies vorrangig durch die Profilierung der Platten, wie z.B. in der DE-OS 4020757 dargelegt. Die Profilierung besteht meist aus einer wellen- förmigen Prägung mit im Querschnitt gleichgroßen Wellenbergen und Wellentälern quer zur Ausbreitungsrichtung der Wellen. Die gerade verlaufenden wellenf rmigen Profilierungen bilden einen spitzen Winkel mit den Längsachsen der Platten, so daß bei Platten, die gegeneinander um 180° gedreht sind, sich die Wellen kreuzen und die Platten auf Abstand halten. In dem sich bildenden Spalt zwischen den Platten ist das in ihm strömende Medium einer ständigen Richtungsänderung bei sich periodisch änderndem Strömungsquerschnitt unterworfen. Das ergibt größere Wärmetauscherflächen und Turbulenzen, die bei-
de den Wärmeübergang verbessern. Außerdem erhöhen die Profi¬ lierungen die Stabilität der Platten, die dadurch sehr dünn ausgebildet werden können. Das begünstigt ebenfalls den Wär¬ meübergang. Diese Vorteile hat man sich auch bei Plattenwärmetauschern für Regenerativ-Gasturbinen zunutze gemacht, zum Beispiel nach der US-PS 3424240. Bei derartigen Wärmetauschern be¬ grenzt ein Stapel gewellter, ringförmiger Wärmetauscherplat¬ ten einen zentralen Eintrittskanal für die heißen Abgase der Turbine. Diese Abgase strömen radial zwischen Plattenpaaren, die ihrerseits im Gegenstrom von kühler Kompressorluft um¬ strömt werden, zu einer am Umfang angeordneten Auslaßleitung, die mit der Verbrennungskammer der Turbine in Verbindung steht. Die Platten sind gewellt, um den Wärmetausch zwischen dem heißen Gasstrom und der Kompressorluft zu verbessern. Die Energie der Abwärme der Turbine wird so auf die komprimierte Luft übertragen, wodurch sich der Wirkungsgrad der Turbine erhöht. Die ringförmigen Platten haben radial nur eine gerin¬ ge Breite, so daß sich die vergrößernden Querschnitte zwischen den Platten auf die radial nach außen strömenden heißen Ab¬ gase kaum auswirken.In the case of plate heat exchangers, this was done primarily by profiling the plates, as described, for example, in DE-OS 4020757. The profiling usually consists of a wave-shaped embossing with wave crests and wave troughs of equal cross-section transverse to the direction of propagation of the waves. The straight wave-shaped profiles form an acute angle with the longitudinal axes of the plates, so that in the case of plates which are rotated by 180 ° with respect to one another, the waves intersect and keep the plates at a distance. In the gap formed between the plates, the medium flowing in it is subject to a constant change of direction with a periodically changing flow cross-section. This results in larger heat exchanger surfaces and turbulence, which de improve the heat transfer. In addition, the profiles increase the stability of the plates, which can thereby be made very thin. This also favors the heat transfer. These advantages have also been used in plate heat exchangers for regenerative gas turbines, for example according to US Pat. No. 3,424,240. In such heat exchangers, a stack of corrugated, annular heat exchanger plates limits a central inlet duct for the hot exhaust gases from the turbine. These exhaust gases flow radially between plate pairs, which in turn have cool compressor air flowing around them in countercurrent, to an outlet line arranged on the circumference, which is connected to the combustion chamber of the turbine. The plates are corrugated to improve the heat exchange between the hot gas flow and the compressor air. The energy of the turbine waste heat is thus transferred to the compressed air, which increases the efficiency of the turbine. The annular plates have only a small radial width, so that the enlarging cross sections between the plates have hardly any effect on the hot exhaust gases flowing radially outwards.
Bei den bekannten Ölkühlern wird der Ölfilter axial durch eine Schraubverbindung mit dem Wärmetauscher und dieser eben- so mit dem Motor verbunden, wie in der DE-OS 3440064, derIn the known oil coolers, the oil filter is connected axially by a screw connection to the heat exchanger and the same to the engine, as in DE-OS 3440064, the
DE-OS 3938254, der DE-OS 4039776 und der DE-OS 4128153 darge¬ stellt und beschrieben. Das hat den Nachteil, daß die Bauform und die Größe des Filters durch den Kühler vorgegeben sind und daß die am Motor auftretenden Vibrationen über den Wär e- tauscher auf den Filter übertragen werden, der bei dieser Art der Verbindung an einem relativ langem Hebelarm schwingt. Dadurch ist der Wärmetauscher großen dynamischen Belastungen ausgesetzt.
Aufgabe der Erfindung ist es, einen kompakten Plattenwärme- scher mit geringem Leistungsgewicht zu schaffen, der einem sich unter dem Einfluß von Wärme ausdehnenden Medium einen wachsenden Strömungsquerschnitt bietet und einem abkühlenden Medium mit abnehmendem Volumen einen sich verringernden Strö¬ mungsquerschnitt, und der dadurch die Strömung stabilisiert und den Wärmeübergang begünstigt. Außerdem soll dieser Plat¬ tenwärmetauscher die Bedingungen für den Anschluß eines Fil¬ ters verbessern.DE-OS 3938254, DE-OS 4039776 and DE-OS 4128153 Darge¬ represents and described. This has the disadvantage that the design and size of the filter are predetermined by the cooler and that the vibrations occurring on the engine are transmitted to the filter via the heat exchanger, which vibrates on a relatively long lever arm in this type of connection. As a result, the heat exchanger is exposed to large dynamic loads. The object of the invention is to create a compact plate heater with a low power-to-weight ratio, which offers a growing flow cross-section to a medium that expands under the influence of heat and a cooling medium with a decreasing volume a decreasing flow cross-section, and thereby the flow stabilizes and promotes heat transfer. In addition, this plate heat exchanger is intended to improve the conditions for connecting a filter.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß einem Wärmetauscher, der aus einem Stapel gleichgroßer und gleich¬ artig profilierter ringförmiger Platten besteht, die gegen¬ einander um 180° gewendet sind und sich daher abwechselnd ih- Vorderseiten und ihre Rückseiten zuwenden, vom Umfang her ein wärmeabgebendes Medium zugeführt wird, das jeden zweiten Spalt zwischen den Platten radial durchströmt bis es durch den von ringförmigen Platten eingeschlossenen Kanal abfließt, während ein wärmeaufnehmendes Medium, das über angeflanschte Ringlei- tungen zu- und abgeführt wird, die andere Seite einer jeden Platte im radialen Gegenstrom umströmt.This object is achieved according to the invention in that a heat exchanger, which consists of a stack of equally large and uniformly profiled annular plates which are turned 180 ° against one another and therefore alternately face their front sides and their rear sides, has a circumference heat-emitting medium is supplied, which radially flows through every second gap between the plates until it flows out through the channel enclosed by annular plates, while a heat-absorbing medium which is supplied and discharged via flanged ring lines radially on the other side of each plate Flows around countercurrent.
Die Platten sind so profiliert, daß sich benachbarte Platten entweder mit ihrem inneren und äußeren ebenen Rand oder mit ihren Profilierungen berühren und abstützen und zwischen sich einen Spalt einschließen. Vorzugsweise werden wellenförmige Profilierungen eingeprägt, die spiralförmig, insbesondere in Form einer archimedischen Spirale, verlaufen. Der Querschnitt der Wellen ist beliebig. Er kann sinus- oder trapezförmig sein. Jede Spirale beginnt und endet in einem bis zur Höhe der Wellenberge eingeprägten Plateau, in dessen Mitte je ein Durchbruch durch die Platte eingeformt ist.The plates are profiled in such a way that adjacent plates either touch and support themselves with their inner and outer flat edges or with their profiles and enclose a gap between them. Wavy profiles are preferably embossed which run in a spiral, in particular in the form of an Archimedean spiral. The cross section of the waves is arbitrary. It can be sinusoidal or trapezoidal. Each spiral begins and ends in a plateau stamped up to the height of the wave crests, in the middle of which a breakthrough is formed through the plate.
Die Plateaus und die in ihnen eingeformten Durchbrüche haben aus Platzgründen am inneren Rand vorzugsweise ovalen Quer¬ schnitt haben, dessen Längsachse sich radial erstreckt, und am
hen und unter Wärmezuführung im Stapel verlötet werden. Der Plattenwärmetauscher ist von einem Gehäuse umschlossen, in dem vorteilhaft ein Filter, z.B. ein Ölfilter, angeordnet werden kann, der den gesamten Umfang des Wärmetauschers um- schließt und daher eine um ein Vielfaches größere Filterflä¬ che aufweist als bekannte axial anzuschließende Filter. Die¬ ser Filter zeichnet sich durch geringere Druckverluste und eine größere Nutzungsdauer aus. Bei dieser Anordnung des Filters werden die vom Motor über- tragenen Vibrationen gedämpft und beeinträchtigen kaum noch die Stabilität des Wärmetauschers.For reasons of space, the plateaus and the openings formed in them preferably have an oval cross section on the inner edge, the longitudinal axis of which extends radially, and on hen and soldered in the stack with heat. The plate heat exchanger is enclosed by a housing in which a filter, for example an oil filter, can advantageously be arranged, which encloses the entire circumference of the heat exchanger and therefore has a filter surface that is many times larger than known axially connected filters. This filter is characterized by lower pressure losses and a longer service life. With this arrangement of the filter, the vibrations transmitted by the engine are dampened and hardly affect the stability of the heat exchanger.
Der höchste Wirkungsgrad der Wärmeübertragung wird mit dem erfindungsgemäßen Plattenwärmetauscher mit Medien erreicht, die während des Wärmetausches den Übergang von der gasförmi- gen zur flüssigen Phase oder von der flüssigen zur gasförmi¬ gen Phase durchlaufen. Bei diesen Phasenübergängen verändern die Medien extrem ihre Volumina. Die damit bei herkömmlichen Wärmetauschern auftretenden extremen Änderungen des Druckes werden mit dem vorgeschlagenen Plattenwärmetauscher weitge- hend vermieden, weil dem expadienden Medium ein mit demThe highest efficiency of heat transfer is achieved with the plate heat exchanger according to the invention with media which pass through the transition from the gaseous to the liquid phase or from the liquid to the gaseous phase during the heat exchange. With these phase transitions, the media change their volumes extremely. The extreme changes in pressure that occur in conventional heat exchangers are largely avoided with the proposed plate heat exchanger because the expanding medium interacts with the
Radius wachsender Strömungsquerschnitt und dem kondensieren¬ den Medium ein sich im gleichen Maße verengender Strömungs¬ querschnitt zur Verfügung steht. Das erhöht den Wirkungsgrad des Wärmeüberganges und stellt geringere Anforderungen an die Festigkeit des Wärmetauschers.Radius increasing flow cross-section and the condensing medium an equally narrowing flow cross-section is available. This increases the efficiency of the heat transfer and places fewer demands on the strength of the heat exchanger.
Die Erfindung wird im folgenden an Ausführungsbeispielen be¬ schrieben:The invention is described below using exemplary embodiments:
Fig. 1 zeigt die Ansicht einer Platte und Fig. 2 den radialen Schnitt durch einen Plattenwärmetauscher ohne Gehäuse,1 shows the view of a plate and FIG. 2 shows the radial section through a plate heat exchanger without a housing,
Fig. 3 einen axialen Schnitt AA durch einen Plattenwärmetau¬ scher mit Gehäuse. Der Plattenwärmetauscher besteht aus einem Stapel gleichgro¬ ßer und gleichartig profilierter ringförmiger Platten 1, in
dem benachbarte Platten 1 gegeneinander um 180° gewendet sind und sich entweder ihre Vorderseiten 2 oder ihre Rückseiten 3 zuwenden.3 shows an axial section AA through a plate heat exchanger with a housing. The plate heat exchanger consists of a stack of equally sized and similarly profiled annular plates 1, in the adjacent plates 1 are turned against each other by 180 ° and either their front sides 2 or their back sides 3 face.
Der innere Rand 4 und der äußere Rand 5 einer jeden Platte 1 schließen die Wärmetauscherfläche 6 ein, die in Form einerThe inner edge 4 and the outer edge 5 of each plate 1 enclose the heat exchanger surface 6, which in the form of a
Welle 7 profiliert ist, deren Wellenberge wie eine archimedi¬ sche Spirale verlaufen und in je einem bis zur Höhe der Wel¬ lenberge eigeprägten Plateau 8 beginnen und enden, in deren Mitte jeweils ein Durchbruch 9 durch die Platte 1 eingeformt ist.Shaft 7 is profiled, the wave crests of which run like an Archimedean spiral and each begin and end in a plateau 8 which is stamped up to the height of the wave crest, in the middle of which a breakthrough 9 is formed through the plate 1.
Der Außendurchmesser der Platte 1 ist um ein Vielfaches größer als ihr Innendurchmesser, um eine große Wärmetauscher¬ fläche 6 zu erhalten. Bei benachbarten Platten 1 sind entweder die sich berührenden ebenenen Ränder 4 und 5 oder die sich berührenden Plateaus 8 und die sich kreuzenden Wellen 7 an ihren Berührungspunkten mittels Laser verschweißt.The outer diameter of the plate 1 is many times larger than its inner diameter in order to obtain a large heat exchanger surface 6. In the case of adjacent plates 1, either the contacting flat edges 4 and 5 or the contacting plateaus 8 and the intersecting shafts 7 are welded at their points of contact by means of a laser.
Die durch die Durchbrüche 9 gebildeten axialen Kanäle 10 und 11 sind mit den Ringleitungen 12 und 13 an den Stirnseiten des Plattenwärmetauschers verbunden.The axial channels 10 and 11 formed by the openings 9 are connected to the ring lines 12 and 13 on the end faces of the plate heat exchanger.
Der Plattenwärmetauscher ist von einem Gehäuse 14 eingeschlos¬ sen in dessen Umfang ein Filter 15 angeordnet ist. Dem Filter 15 wird über die Leitung 16 vom Motor heißes Öl zugeführt, das durch den Filter 15 in den Plat enwärmetauscher strömt und nach dem Kühlen über die Leitung 17 wieder dem Motor zugeführt wird. Gekühlt wird das Öl durch Wasser, das über die Ringleitungen 12 und 13 zu- und abgeführt wird.
The plate heat exchanger is enclosed by a housing 14, in the circumference of which a filter 15 is arranged. The filter 15 is supplied with hot oil from the engine via line 16, which flows through the filter 15 into the plate heat exchanger and is returned to the engine via line 17 after cooling. The oil is cooled by water, which is supplied and discharged via the ring lines 12 and 13.
Verwendete BezugszeichenReference symbols used
1 Platte des Plattenwärmetauschers1 plate of the plate heat exchanger
2 Vorderseite der Platte 12 front of the plate 1
3 Rückseite der Platte 13 back of plate 1
4 innerer ebener Rand der Platte 14 inner flat edge of the plate 1
5 äußerer ebener Rand der Platte 15 outer flat edge of the plate 1
6 Wärmetauscherfläche der Platte 16 heat exchanger surface of plate 1
7 eingeprägte Welle in der Wärmetauscherfläche 67 embossed shaft in the heat exchanger surface 6
8 eingeprägtes Plateau am Anfang und Ende einer jeden Welle 78 embossed plateau at the beginning and end of each shaft 7
9 Durchbruch durch die Platte 19 Breakthrough through plate 1
10 axiale Kanäle am inneren Rand 410 axial channels on the inner edge 4
11 axiale Kanäle am äußeren Rand 511 axial channels on the outer edge 5
12 Ringleitung an den Kanälen 1012 loop on the channels 10
13 Ringleitung an den Kanälen 1113 loop on the channels 11
14 Gehäuse des Plattenwärmetauschers14 Housing of the plate heat exchanger
15 Filter15 filters
16 Leitung vom Motor zum Plattenwärmetauscher16 Line from the engine to the plate heat exchanger
17 Leitung vom Plattenwärmetauscher zum Motor
17 Line from the plate heat exchanger to the engine
Claims
1. Plattewärmetauscher, bestehend aus einem Stapel gleichgroßer und gleichförmig profilierter ringförmiger Platten, die sich abwechsend ihre Vorderseiten und ihre Rückseiten zuwenden und durch die Profilierung auf Abstand gehalten werden, dadurch gekennzeichnet, daß auf der einen Seite der Platten (1) ein vom Umfang zugeführtes wärmeabgebendes Medium radial zum Zentrum strömt, das über den von den ringförmigen Platten ein¬ geschlossenen Kanal abgeführt wird, während auf der anderen Seite im Gegenstrom radial ein wärmeaufnehmendes Medium strömt, das über Ringleitungen (12) und (13) an den Stirnsei¬ ten zu- und abgeführt wird.1. plate heat exchanger, consisting of a stack of equally large and uniformly profiled annular plates, which alternately turn their front and back sides and are kept at a distance by the profiling, characterized in that on one side of the plates (1) a supplied from the circumference Heat-emitting medium flows radially to the center, which is discharged via the channel enclosed by the annular plates, while on the other side, in countercurrent, a heat-absorbing medium flows radially, which flows to the end faces via ring lines (12) and (13) - and is discharged.
2. Plattenwärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß die Platten (1) die Form von Ringen haben, deren Außen¬ durchmesser um ein Vielfaches größer ist als ihr Innendurch¬ messer, und daß die von einem inneren ebenen Rand (4) und von einem äußeren ebenen Rand (5) eingeschlossene Wärmetauscher¬ fläche (6) in Form von Wellen (7) profiliert sind, die spira¬ lig verlaufen und jeweils in einem bis zur Höhe der Wellen¬ berge eigeprägten Plateau (8) beginnen und enden, in deren Mitte jeweils ein Durchbruch (9) durch die Platte (1) einge¬ formt ist, und daß die sich im Stapel berührenden inneren und äußeren Ränder (4) und (5), Plateaus (8) und kreuzenden Wel¬ len (7) der Platten (1) miteinander verschweißt oder verlötet sind.2. Plate heat exchanger according to claim 1, characterized in that the plates (1) have the shape of rings, the outer diameter of which is many times larger than their inner diameter, and that of an inner flat edge (4) and of an outer flat edge (5) enclosed heat exchanger surface (6) are profiled in the form of waves (7) which run spirally and each begin and end in a plateau (8) which is embossed up to the height of the wave mountains, in whose center each has an opening (9) through the plate (1) and that the inner and outer edges (4) and (5), plateaus (8) and crossing shafts (7) touching in the stack the plates (1) are welded or soldered together.
3. Plattenwärmetauscher nach Anspruch 1 und 2, dadurch gekenn¬ zeichnet, daß die wellenförmigen Profilierungen in Form ar¬ chimedischer Spiralen verlaufen.3. Plate heat exchanger according to claim 1 and 2, characterized gekenn¬ characterized in that the wavy profiles run in the form of Ar¬ Chimedean spirals.
4. Plattenwärmetauscher nach Anspruch 1 bis 3 , dadurch gekenn¬ zeichnet, daß die Wellen (7) einen sinusf rmigen oder trapez- förmigen Querschnitt haben.4. plate heat exchanger according to claim 1 to 3, characterized gekenn¬ characterized in that the shafts (7) a sinusoidal or trapezoidal have a shaped cross section.
5. Plattenwärmetauscher nach Anspruch 1 bis 4, dadurch gekenn¬ zeichnet, das er von einem Gehäuse (14) eingeschlossen ist, in dessen Umfang ein Filter (15) angeordnet ist.5. Plate heat exchanger according to claim 1 to 4, characterized gekenn¬ characterized in that it is enclosed by a housing (14), in the circumference of which a filter (15) is arranged.
6. Plattenwärmetauscher nach Anspruch 1 und 2, dadurch gekenn- zechnet, daß die Plateaus (8) und die in ihrer Mitte einge¬ formten Durchbrüche (9) am inneren Rand (4) die Form von Ovalen haben, deren Längsachse radial angeordnet ist, und am äußeren Rand (5) die Form von Nieren haben, deren Längsachse Parallel zum Umfang angeordnet ist. 6. Plate heat exchanger according to claim 1 and 2, characterized in that the plateaus (8) and the openings (9) formed in their center on the inner edge (4) have the shape of ovals, the longitudinal axis of which is arranged radially, and on the outer edge (5) have the shape of kidneys, the longitudinal axis of which is arranged parallel to the circumference.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19510847A DE19510847C2 (en) | 1995-03-17 | 1995-03-17 | Plate heat exchanger |
| DE19510847 | 1995-03-17 | ||
| PCT/DE1996/000487 WO1996029558A1 (en) | 1995-03-17 | 1996-03-15 | Plate heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0839308A1 true EP0839308A1 (en) | 1998-05-06 |
| EP0839308B1 EP0839308B1 (en) | 1999-12-01 |
Family
ID=7757657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96907253A Expired - Lifetime EP0839308B1 (en) | 1995-03-17 | 1996-03-15 | Plate heat exchanger |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6085832A (en) |
| EP (1) | EP0839308B1 (en) |
| JP (1) | JP3836879B2 (en) |
| AT (1) | ATE187244T1 (en) |
| CA (1) | CA2215192C (en) |
| DE (1) | DE19510847C2 (en) |
| WO (1) | WO1996029558A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2157382A3 (en) * | 2008-08-22 | 2015-09-23 | Robert Bosch GmbH | Heating device |
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| DE19624358B4 (en) * | 1996-06-19 | 2005-07-14 | Mann + Hummel Gmbh | heat exchangers |
| FI109148B (en) * | 1997-12-10 | 2002-05-31 | Vahterus Oy | plate heat exchangers |
| DE19847213C1 (en) * | 1998-10-13 | 2000-02-10 | Dbb Fuel Cell Engines Gmbh | Evaporator comprising stack of circular plates in which the increasing radial flow is compensated by increasing passage section |
| DE19860151A1 (en) * | 1998-12-24 | 2000-07-06 | Winkelmann & Pannhoff Gmbh & C | Heat exchanger using plate element stands element it spirals round center feed and offtake tube using several elements offset round tube preferably in sectors. |
| DE10005889A1 (en) * | 2000-02-10 | 2001-08-16 | Mann & Hummel Filter | Liquid cooler system |
| CA2312113C (en) | 2000-06-23 | 2005-09-13 | Long Manufacturing Ltd. | Heat exchanger with parallel flowing fluids |
| DE10038523C1 (en) * | 2000-08-08 | 2002-06-27 | Xcellsis Gmbh | Combined component from heat exchanger and reactor |
| FI114738B (en) * | 2000-08-23 | 2004-12-15 | Vahterus Oy | Heat exchanger with plate structure |
| SE518058C2 (en) * | 2000-12-22 | 2002-08-20 | Alfa Laval Ab | Component for supporting a filter member in a port channel to a plate heat exchanger, device comprising a tubular filter member and said component, and plate heat exchanger comprising a tubular filter member and said component |
| US6607027B2 (en) * | 2001-04-05 | 2003-08-19 | Modine Manufacturing Company | Spiral fin/tube heat exchanger |
| DE10117400A1 (en) * | 2001-04-06 | 2002-10-10 | Behr Gmbh & Co | Heat exchanger and heating or air conditioning system of a motor vehicle containing the same |
| DE10141490A1 (en) | 2001-08-24 | 2003-03-13 | Behr Gmbh & Co | Radiator and method for cooling a medium |
| DE10152363A1 (en) * | 2001-10-24 | 2003-05-08 | Modine Mfg Co | Caseless plate heat exchanger |
| US7010936B2 (en) * | 2002-09-24 | 2006-03-14 | Rini Technologies, Inc. | Method and apparatus for highly efficient compact vapor compression cooling |
| AT500974B1 (en) * | 2004-10-27 | 2007-02-15 | Pustelnik Philipp Dipl Ing | WÄRMEAUSTAUSCHER |
| US20100170666A1 (en) * | 2009-01-07 | 2010-07-08 | Zess Inc. | Heat Exchanger and Method of Making and Using the Same |
| CA2766466C (en) | 2009-06-24 | 2016-10-18 | Valorbec Societe En Commandite, Representee Par Gestion Valeo S.E.C. | Heat-exchanger configuration |
| KR102019203B1 (en) * | 2017-10-02 | 2019-09-06 | 한국원자력연구원 | Printed circuit heat exchange module and heat exchanger |
| EP3701211B1 (en) | 2017-10-26 | 2023-05-17 | Cummins Inc. | Cooled lubricant filter housing |
| US11976856B2 (en) * | 2021-03-19 | 2024-05-07 | Daikin Industries, Ltd. | Shell and plate heat exchanger for water-cooled chiller and water-cooled chiller including the same |
| CN115077267B (en) * | 2022-08-19 | 2023-01-20 | 中国核动力研究设计院 | Heat exchange member and condenser |
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-
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- 1996-03-15 EP EP96907253A patent/EP0839308B1/en not_active Expired - Lifetime
- 1996-03-15 CA CA002215192A patent/CA2215192C/en not_active Expired - Fee Related
- 1996-03-15 WO PCT/DE1996/000487 patent/WO1996029558A1/en active IP Right Grant
- 1996-03-15 AT AT96907253T patent/ATE187244T1/en not_active IP Right Cessation
- 1996-03-15 JP JP52798196A patent/JP3836879B2/en not_active Expired - Fee Related
- 1996-03-15 US US08/930,388 patent/US6085832A/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
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| See references of WO9629558A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2157382A3 (en) * | 2008-08-22 | 2015-09-23 | Robert Bosch GmbH | Heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0839308B1 (en) | 1999-12-01 |
| DE19510847C2 (en) | 2002-11-21 |
| ATE187244T1 (en) | 1999-12-15 |
| JPH11502295A (en) | 1999-02-23 |
| DE19510847A1 (en) | 1996-09-19 |
| JP3836879B2 (en) | 2006-10-25 |
| WO1996029558A1 (en) | 1996-09-26 |
| CA2215192A1 (en) | 1996-09-26 |
| US6085832A (en) | 2000-07-11 |
| CA2215192C (en) | 2003-10-14 |
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