EP0080742A2 - Heat exchanger with several pipe bundles - Google Patents

Heat exchanger with several pipe bundles Download PDF

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Publication number
EP0080742A2
EP0080742A2 EP82201225A EP82201225A EP0080742A2 EP 0080742 A2 EP0080742 A2 EP 0080742A2 EP 82201225 A EP82201225 A EP 82201225A EP 82201225 A EP82201225 A EP 82201225A EP 0080742 A2 EP0080742 A2 EP 0080742A2
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EP
European Patent Office
Prior art keywords
tube
transfer medium
bundles
heat exchanger
heat transfer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82201225A
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German (de)
French (fr)
Other versions
EP0080742B1 (en
EP0080742A3 (en
Inventor
Werner Graf
August Haeni
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BBC Brown Boveri AG Switzerland
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BBC Brown Boveri AG Switzerland
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Publication of EP0080742A2 publication Critical patent/EP0080742A2/en
Publication of EP0080742A3 publication Critical patent/EP0080742A3/en
Application granted granted Critical
Publication of EP0080742B1 publication Critical patent/EP0080742B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • F28D7/0091—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium the supplementary medium flowing in series through the units
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0058—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having different orientations to each other or crossing the conduit for the other heat exchange medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0236—Header boxes; End plates floating elements
    • F28F9/0241—Header boxes; End plates floating elements floating end plates
    • 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
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers

Definitions

  • Heat exchanger with at least two tube bundles, the tubes of which a liquid heat transfer medium flows and a gaseous heat transfer medium flows in a cross-countercurrent, the tube ends being arranged on both sides in tube plates delimited by liquid chambers, and the liquid heat transfer medium being supplied to the at least two tube bundles with different temperature levels .
  • Such heat exchangers are used, for example, as charge air coolers for supercharged internal combustion engines. If these are diesel engines for ship drives, for example, sea water or river water is generally used as the liquid heat carrier - here as a coolant. In the interest of optimal energy exploitation, engine operators often insist on the additional use of existing hot water as a coolant. In such cases, the charge air cooler works with two separate circuits, usually with a hot water circuit and a cold water circuit. Such devices can also be used by the same operators to preheat the air when the engine is started; then only the hot water circuit in operation. Different thermal expansions occur in one and the same apparatus, and special measures must be taken to control them.
  • the invention defined in the characterizing part of claim 1 is based on the object of avoiding thermodynamically induced pipe tensions with simple means and with certainty in heat exchangers of the type mentioned at the outset which work with liquid heat carriers of different temperatures.
  • the liquid heat transfer medium in this case water as a coolant, is separated in a hot water circuit and in a cold water circuit led.
  • the cold water reaches the water chamber 1 'in the direction of the arrow, flows through the tubes 2' of the bundle 2 while absorbing heat, is deflected in the water space 3 'by means of a guide device (not shown), flows through the tubes 2 "of the same bundle 2 in countercurrent with further heat absorption and leaves the cooler in the direction of the arrow over the water chamber 1 ".
  • the hot water which can have a temperature between 60 and 120 ° C., is introduced on the same cooler side as the cold water and also flows through the same circuit, with the flowed elements hereby water chamber 4 ', 4 ", pipes 5', 5" of the bundle 5 and water space 6 are designated.
  • the gaseous heat transfer medium here the hot, compressed air, acts on the cooler via the supply air line 7 and leaves it via the exhaust air line 8.
  • the tube bundles 2, 5 are flowed around in a cross flow. As it passes through the cooler, the air to be cooled is passed through flow channels which are formed by ribs 9 arranged close to one another. The latter are only partially shown for the sake of clarity and can be both continuous plate fins that are traversed by all the tubes of a bundle or ring plates arranged on the individual tubes.
  • the cross-countercurrent flow to the cooler is expediently chosen as shown, i.e. the hot air first flows around those pipes 5 "in which the cooling water is at the highest temperature, and as cooling continues, cooler pipes 5 ' ⁇ 2" ⁇ 2' flow around them.
  • the cooler construction provides that the flow-limiting side walls 12, 13 are screwed directly to the tube sheets 10, 11 to form a box be, whereby a separate support frame can be dispensed with.
  • Supply air and exhaust air lines 7, 8 are fastened all around with the screw connections 14, which are merely indicated on the end faces of the tube sheets 10, 11 and side walls 12, 13.
  • the two tube bundles are subjected to different thermodynamic loads during cooler operation.
  • the bundle 5 is subjected to both hot air and hot water, while the bundle 2 is flowed through by the cold water and the precooled air flows around it.
  • the longitudinal strains of the two bundles thus differ greatly from one another.
  • the distance from the tube sheet is determined by the width of the firmly clamped side walls, which are also subjected to thermal expansion; on the other hand, the principle should be maintained that side walls 12, 13 and air lines 7, 8 on one and the same connection plate, here tube sheet 10, respectively. 11 are to be fastened.
  • the invention now remedies despite maintaining the principle of rigidly clamped tube sheets.
  • the tube lengths of the two bundles can be determined, taking into account the expansion that occurs later, in such a way that the sides of the tube sheets 10, 11 'and 10', 11 facing the air duct are aligned with one another during cooling operation and thus form aerodynamically smooth wall surfaces.
  • the cooler consists of two identical elements (1, 10 ', 2, 11, 3 and 4, 10, 5 , 11 ', 6), which are only pushed into one another and are to be screwed to the side walls 12, 13 and air lines 7, 8.
  • the movable tube plates 10 ′, 11 ′ are guided in a gas-tight manner in their cutouts 15, 16.
  • grooves are worked into the end faces of the tube sheets, into which sealing means, for example round cords 17, are inserted.
  • the invention is not limited to the exemplary embodiment shown and described.
  • a multi-flow arrangement for example three or four tube bundles connected in series on the air side, could also be implemented according to the teaching specified.
  • the cross-countercurrent flow of the heat transfer medium and the equilateral supply and removal of coolant are also not mandatory.
  • the device could be used as a cooler act just as well as a preheater for a gaseous working fluid. To do this, only the cold water circuit needs to be out of operation.

Abstract

1. Heat exchanger with at least two tube bundles, with flow of a liquid heat transfer medium through the tubes and a counter-current crossflow of a gaseous heat transfer medium around the tubes, the ends of the tubes being arranged on both sides in tube plates bounded by liquid chambers, and the liquid heat transfer medium being fed to the at least two tube bundles at different temperature levels, characterised in that in each case the tube plate (10', 11') of one bundle (2, 5) is arranged, so as to be movable under the action of heat, in a recess (15, 16) in the tube plate (10, 11) of the other bundle (5, 2).

Description

Wärmeaustauscher mit mindestens zwei Rohrbündeln, deren Rohre von einem flüssigen Wärmeträger durchströmt sind und von einem gasförmigen Wärmeträger im Kreuzgegenstrom umströmt sind, wobei die Rohrenden beidseitig in von Flüssigkeitskammern begrenzten Rohrböden angeordnet sind, und wobei der flüssige Wärmeträger den mindestens zwei Rohrbündeln mit unterschiedlichem Temperaturniveau zugeführt wird.Heat exchanger with at least two tube bundles, the tubes of which a liquid heat transfer medium flows and a gaseous heat transfer medium flows in a cross-countercurrent, the tube ends being arranged on both sides in tube plates delimited by liquid chambers, and the liquid heat transfer medium being supplied to the at least two tube bundles with different temperature levels .

Derartige Wärmeaustauscher werden beispielsweise als Ladeluftkühler für aufgeladene Verbrennungsmotoren angewendet. Handelt es sich hierbei um Dieselmotoren für beispielsweise Schiffantriebe, so wird als flüssiger Wärmeträger - hier als Kühlmittel - in der Regel Seewasser oder Flusswasser verwendet. Im Sinne einer optimalen Energieausbeutung bestehen Motorenbetreiber des öfteren auf der zusätzlichen Verwendung von vorhandenem Heisswasser als Kühlmittel. Der Ladeluftkühler arbeitet dann in solchen Fällen mit zwei getrennten Kreisläufen, und zwar in der Regel mit einem Heisswasserkreislauf und einem Kaltwasserkreislauf. Derartige Apparate können von denselben Betreibern auch dazu benutzt werden, beim Anfahren des Motors die Luft vorzuwärmen; dabei ist dann lediglich der Heisswasserkreislauf in Betrieb. In ein und demselben Apparat treten somit unterschiedliche Wärmedehnungen auf, zu deren Beherrschung besondere Massnahmen zu treffen sind.Such heat exchangers are used, for example, as charge air coolers for supercharged internal combustion engines. If these are diesel engines for ship drives, for example, sea water or river water is generally used as the liquid heat carrier - here as a coolant. In the interest of optimal energy exploitation, engine operators often insist on the additional use of existing hot water as a coolant. In such cases, the charge air cooler works with two separate circuits, usually with a hot water circuit and a cold water circuit. Such devices can also be used by the same operators to preheat the air when the engine is started; then only the hot water circuit in operation. Different thermal expansions occur in one and the same apparatus, and special measures must be taken to control them.

Der im Kennzeichen des Patentanspruchs 1 definierten Erfindung liegt die Aufgabe zugrunde, bei Wärmetauschern der eingangs genannten Art, die mit flüssigen Wärmeträgern verschiedener Temperatur arbeiten, thermodynamisch bedingte Rohrspannungen mit einfachen Mitteln und mit Sicherheit zu vermeiden.The invention defined in the characterizing part of claim 1 is based on the object of avoiding thermodynamically induced pipe tensions with simple means and with certainty in heat exchangers of the type mentioned at the outset which work with liquid heat carriers of different temperatures.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.In the drawing, an embodiment of the invention is shown.

Es zeigen:

  • Fig. 1 schematisch einen Schnitt durch einen Wärmeaustauscher in eingebautem Zustand;
  • Fig. 2 eine perspektivische Ansicht eines Wärmeaustauschers in seinen Einzelteilen;
  • Fig. 3 eine perspektivische Ansicht des gleichen Wärmeaustauschers in zusammengebautem Zustand.
Show it:
  • Figure 1 shows schematically a section through a heat exchanger in the installed state.
  • 2 shows a perspective view of a heat exchanger in its individual parts;
  • Fig. 3 is a perspective view of the same heat exchanger in the assembled state.

In den Figuren sind jeweils gleiche Teile mit denselben Bezugszeichen versehen. Erfindungsunwesentliche Teile wie beispielsweise die Verschraubungen und die Anschlussleitungen für die flüssigen Wärmeträger sind fortgelassen. Die Strömungsrichtung der Wärmeträger ist mit Pfeilen bezeichnet.In the figures, the same parts are provided with the same reference numerals. Parts that are not essential to the invention, such as the screw connections and the connecting lines for the liquid heat transfer medium, have been omitted. The direction of flow of the heat transfer medium is indicated by arrows.

Der Wärmeaustauscher nach Fig. 1 ist ein Ladeluftkühler in seiner einfachsten Form, wie er bei aufgeladenen Verbrennungsmotoren Verwendung findet. Der flüssige Wärmeträger, im vorliegenden Fall Wasser als Kühlmittel, wird in einem Heisswasserkreis und hiervon getrennt in einem Kaltwasserkreis geführt. Das Kaltwasser gelangt in Pfeilrichtung in die Wasserkammer 1', durchströmt unter Wärmeaufnahme die Rohre 2' des Bündels 2, wird im Wasserraum 3' mittels einer nicht gezeigten Leitvorrichtung umgelenkt, durchströmt die Rohre 2" des gleichen Bündels 2 im Gegenstrom unter weiterer Wärmeaufnahme und verlässt den Kühler in Pfeilrichtung über die Wasserkammer 1".1 is a charge air cooler in its simplest form, as used in supercharged internal combustion engines. The liquid heat transfer medium, in this case water as a coolant, is separated in a hot water circuit and in a cold water circuit led. The cold water reaches the water chamber 1 'in the direction of the arrow, flows through the tubes 2' of the bundle 2 while absorbing heat, is deflected in the water space 3 'by means of a guide device (not shown), flows through the tubes 2 "of the same bundle 2 in countercurrent with further heat absorption and leaves the cooler in the direction of the arrow over the water chamber 1 ".

Das Heisswasser, das zwischen 60 und 120° C Temperatur haben kann, wird an der gleichen Kühlerseite wie das Kaltwasser eingeführt und durchströmt auch einen gleichen Kreislauf, wobei die durchströmten Elemente hiermit Wasserkammer 4', 4", Rohre 5', 5" des Bündels 5 und Wasserraum 6 bezeichnet sind.The hot water, which can have a temperature between 60 and 120 ° C., is introduced on the same cooler side as the cold water and also flows through the same circuit, with the flowed elements hereby water chamber 4 ', 4 ", pipes 5', 5" of the bundle 5 and water space 6 are designated.

Der gasförmige Wärmeträger, hier die heisse, verdichtete Luft, beaufschlagt den Kühler über die Zuluftleitung 7 und verlässt ihn über die Abluftleitung 8. Die Rohrbündel 2, 5 werden hierbei im Kreuzstrom umströmt. Beim Durchgang durch den Kühler wird die abzukühlende Luft durch Strömungskanäle geleitet, die durch eng beieinander angeordnete Rippen 9 gebildet sind. Letztere sind der besseren Uebersichtlichkeit wegen nur teilweise dargestellt und können sowohl durchgehende Plattenrippen sein, die von allen Rohren eines Bündels durchquert sind oder auch an den einzelnen Rohren angeordnete Ringbleche.The gaseous heat transfer medium, here the hot, compressed air, acts on the cooler via the supply air line 7 and leaves it via the exhaust air line 8. The tube bundles 2, 5 are flowed around in a cross flow. As it passes through the cooler, the air to be cooled is passed through flow channels which are formed by ribs 9 arranged close to one another. The latter are only partially shown for the sake of clarity and can be both continuous plate fins that are traversed by all the tubes of a bundle or ring plates arranged on the individual tubes.

Zweckmässigerweise wird die Kreuzgegenstrombeaufschlagung des Kühlers wie dargestellt gewählt, d.h. die heisse Luft umströmt zunächst jene Rohre 5", in denen das Kühlwasser die höchste Temperatur aufweist, und mit fortschreitender Abkühlung werden zunehmend kältere Rohre 5' → 2" → 2' umströmt.The cross-countercurrent flow to the cooler is expediently chosen as shown, i.e. the hot air first flows around those pipes 5 "in which the cooling water is at the highest temperature, and as cooling continues, cooler pipes 5 '→ 2" → 2' flow around them.

Wie aus Fig. 3 ersichtlich, sieht die Kühlerkonstruktion vor, dass die strömungsbegrenzenden Seitenwände 12, 13 direkt mit den Rohrböden 10, 11 zu einem Kasten verschraubt werden, wodurch auf einen gesonderten Tragrahmen verzichtet werden kann. Zuluft- und Abluftleitungen 7, 8 werden ringsum mit den an den Stirnflächen der Rohrböden 10, 11 und Seitenwände 12, 13 lediglich angedeuteten Verschraubungen 14 befestigt.As can be seen from FIG. 3, the cooler construction provides that the flow-limiting side walls 12, 13 are screwed directly to the tube sheets 10, 11 to form a box be, whereby a separate support frame can be dispensed with. Supply air and exhaust air lines 7, 8 are fastened all around with the screw connections 14, which are merely indicated on the end faces of the tube sheets 10, 11 and side walls 12, 13.

Die beiden Rohrbündel werden während des Kühlerbetriebes thermodynamisch unterschiedlich belastet. Das Bündel 5 wird sowohl mit Heissluft als auch mit Heisswasser beaufschlagt, während das Bündel 2 vom Kaltwasser durchströmt und von vorgekühlter Luft umströmt wird. Die Längsdehnungen beider Bündel weichen somit stark voneinander ab.The two tube bundles are subjected to different thermodynamic loads during cooler operation. The bundle 5 is subjected to both hot air and hot water, while the bundle 2 is flowed through by the cold water and the precooled air flows around it. The longitudinal strains of the two bundles thus differ greatly from one another.

Einerseits ist der Rohrbodenabstand durch die Breite der fest eingespannten, ebenfalls Wärmedehnungen unterworfenen Seitenwände vorgegeben; andererseits soll das Prinzip beibehalten werden, dass Seitenwände 12, 13 und Luftleitungen 7, 8 an ein und derselben Anschlussplatte, hier Rohrboden 10 resp. 11 zu befestigen sind.On the one hand, the distance from the tube sheet is determined by the width of the firmly clamped side walls, which are also subjected to thermal expansion; on the other hand, the principle should be maintained that side walls 12, 13 and air lines 7, 8 on one and the same connection plate, here tube sheet 10, respectively. 11 are to be fastened.

Bei starr eingespannten Rohren würde das "heisse" Rohrbündel 5 einer zu grossen Druckbelastung unterliegen, das "kalte" Rohrbündel 2 würde hingegen unzulässig stark auf Zug beansprucht werden.In the case of rigidly clamped pipes, the "hot" pipe bundle 5 would be subjected to an excessive pressure load, the "cold" pipe bundle 2, however, would be subjected to an impermissibly high tension.

Hier schafft nun die Erfindung Abhilfe trotz Beibehaltung des Prinzips von starr eingespannten Rohrböden. Zu diesem Zweck sind die Rohrenden eines jeden Bündels 2 resp. 5 auf einer Seite in den eine tragende Funktion ausübenden Rohrböden 10 resp. 11 eingewalzt, während sie auf der anderen Seite in Rohrböden 10' resp. 11' angeordnet sind, die keinen Einfluss auf das Festigkeitsgefüge des Kühlers ausüben.Here, the invention now remedies despite maintaining the principle of rigidly clamped tube sheets. For this purpose, the tube ends of each bundle 2, respectively. 5 on one side in the tube plates 10 carrying out a supporting function. 11 rolled, while on the other side in tube sheets 10 'resp. 11 'are arranged, which have no influence on the strength structure of the cooler.

In der Fig. 2 sind die letztgenannten "beweglichen" Rohrböden 10', 11' erkennbar, welche derart dimensioniert sind, dass ausreichend Platz für die Verschraubung der Wasserkammerdeckel 1, 6 vorhanden ist (Fig. 3).2, the latter "movable" tube sheets 10 ', 11' can be seen, which are dimensioned such that there is sufficient space for screwing the water chamber covers 1, 6 (FIG. 3).

Um die Erstreckung des Kühlers in Rohrrichtung nicht über jene eines Wärmetauschers mit beidseitig starren Bündeln zu gestalten, sind in den tragenden Rohrböden 10, 11 entsprechend bemessene Aussparungen 15, 16 für die Aufnahme, Führung und Lagerung der beweglichen Rohrböden 10', 11' vorgesehen (Fig. 2).In order not to design the extension of the cooler in the tube direction over that of a heat exchanger with rigid bundles on both sides, correspondingly dimensioned cutouts 15, 16 are provided in the supporting tube sheets 10, 11 for receiving, guiding and mounting the movable tube sheets 10 ', 11' ( Fig. 2).

Die Bestimmung der Rohrlängen beider Bündel kann unter Berücksichtigung der später auftretenden Dehnungen derart vorgenommen werden, dass während des Kühlerbetriebes die dem Luftkanal zugekehrten Seiten der Rohrböden 10, 11' bzw. 10', 11 miteinander fluchten und somit strömungsgünstige glatte Wandflächen bilden.The tube lengths of the two bundles can be determined, taking into account the expansion that occurs later, in such a way that the sides of the tube sheets 10, 11 'and 10', 11 facing the air duct are aligned with one another during cooling operation and thus form aerodynamically smooth wall surfaces.

Verzichtet man auf derart unterschiedliche Rohrlängen, was Funktionsfähigkeit des Erfindungsgegenstandes nicht beeinträchtigt, so ist aus Fig. 2 und 3 erkennbar, dass der Kühler aus zwei gleichen Elementen (1, 10', 2, 11, 3, bzw. 4, 10, 5, 11', 6) besteht, die lediglich ineinander geschoben werden und mit den Seitenwänden 12, 13 und Luftleitungen 7, 8 zu verschrauben sind.If such different pipe lengths are dispensed with, which does not impair the functionality of the subject matter of the invention, it can be seen from FIGS. 2 and 3 that the cooler consists of two identical elements (1, 10 ', 2, 11, 3 and 4, 10, 5 , 11 ', 6), which are only pushed into one another and are to be screwed to the side walls 12, 13 and air lines 7, 8.

Um ein Entweichen der Druckluft aus dem Kühler zu verhindern, werden die beweglichen Rohrböden 10', 11' in ihren Aussparungen 15, 16 gasdicht geführt. Hierzu werden in die Stirnflächen der Rohrböden Nuten eingearbeitet, in die Dichtmittel, beispielsweise Rundschnüre 17 eingelegt werden.In order to prevent the compressed air from escaping from the cooler, the movable tube plates 10 ′, 11 ′ are guided in a gas-tight manner in their cutouts 15, 16. For this purpose, grooves are worked into the end faces of the tube sheets, into which sealing means, for example round cords 17, are inserted.

Selbstverständlich ist die Erfindung nicht auf das dargestellte und beschriebene Ausführungsbeispiel beschränkt. In Abweichung hierzu könnte auch eine Mehrflussanordnung, beispielsweise drei oder vier luftseitig hintereinander geschaltete Rohrbündel nach der angegebenen Lehre ausgeführt werden. Auch die Kreuzgegenstromführung der Wärmeträger und die gleichseitige Kühlmittelzu und -abfuhr ist nicht zwingend. Desgleichen konnte der Apparat statt als Kuhler genauso gut als Vorwärmer für ein gasförmiges Arbeitsmittel wirken. Hierzu braucht nur der Kaltwasserkreis ausser Betrieb zu sein.Of course, the invention is not limited to the exemplary embodiment shown and described. In deviation from this, a multi-flow arrangement, for example three or four tube bundles connected in series on the air side, could also be implemented according to the teaching specified. The cross-countercurrent flow of the heat transfer medium and the equilateral supply and removal of coolant are also not mandatory. Likewise, the device could be used as a cooler act just as well as a preheater for a gaseous working fluid. To do this, only the cold water circuit needs to be out of operation.

Claims (3)

1. Wärmeaustauscher mit mindestens zwei Rohrbündeln, deren Rohre von einem flüssigen Wärmeträger durchströmt sind und von einem gasförmigen Wärmeträger im Kreuzgegenstrom umströmt sind, wobei die Rohrenden beidseitig in von Flüssigkeitskammern begrenzten Rohrböden angeordnet sind und wobei der flüssige Wärmeträger den mindestens zwei Rohrbündeln mit unterschiedlichem Temperaturniveau zugeführt wird, dadurch gekennzeichnet, dass jeweils der Rohrboden (10', 11') des einen Bündels (2, 5) in einer Aussparung (15, 16) des Rohrbodens (10, 11) des anderen Bündels (5, 2) wärmebeweglich angeordnet ist.1.Heat exchanger with at least two tube bundles, the tubes of which a liquid heat transfer medium flows and a gaseous heat transfer medium flows in cross-countercurrent, the tube ends being arranged on both sides in tube plates delimited by liquid chambers, and the liquid heat transfer medium being fed to the at least two tube bundles with different temperature levels , characterized in that the tube sheet (10 ', 11') of the one bundle (2, 5) is arranged in a recess (15, 16) of the tube sheet (10, 11) of the other bundle (5, 2) so that it can move with heat . 2. Wärmeaustauscher nach Anspruch 1, dadurch gekennzeichnet, dass die wärmebeweglich angeordneten Rohrböden (10', 11') beider Bündel (2, 5) mit aufschraubbaren Deckeln (1, 6) versehen sind, welche durch die Aussparungen (15, 16) durchsteckbar sind.2. Heat exchanger according to claim 1, characterized in that the heat-mobile tube plates (10 ', 11') of both bundles (2, 5) are provided with screw-on lids (1, 6) which can be pushed through the cutouts (15, 16) are. 3. Wärmeaustauscher nach Anspruch 1, dadurch gekennzeichnet, dass die wärmebeweglich angeordneten Rohrböden (10', 11') beider Bündel (2, 5) in ihren jeweiligen Aussparungen (15, 16) gasdicht geführt sind.3. Heat exchanger according to claim 1, characterized in that the heat-mobile tube plates (10 ', 11') of both bundles (2, 5) are guided gas-tight in their respective recesses (15, 16).
EP19820201225 1981-11-27 1982-09-30 Heat exchanger with several pipe bundles Expired EP0080742B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7606/81 1981-11-27
CH760681 1981-11-27

Publications (3)

Publication Number Publication Date
EP0080742A2 true EP0080742A2 (en) 1983-06-08
EP0080742A3 EP0080742A3 (en) 1983-07-06
EP0080742B1 EP0080742B1 (en) 1984-09-12

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EP19820201225 Expired EP0080742B1 (en) 1981-11-27 1982-09-30 Heat exchanger with several pipe bundles

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EP (1) EP0080742B1 (en)
DE (1) DE3260735D1 (en)
DK (1) DK150956C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584340A (en) * 1995-08-07 1996-12-17 Heatcraft Inc. Heat exchanger with flexible tube support
DE19545308A1 (en) * 1995-12-05 1997-06-12 Asea Brown Boveri Convective counterflow heat transmitter
EP0908691A1 (en) * 1997-10-10 1999-04-14 Societe D'etudes Et De Constructions Aero-Navales Cross-flow heat exchanger
GB2451848A (en) * 2007-08-14 2009-02-18 Arctic Circle Ltd Multiple circuit heat exchanger comprising tube bundles
US20100126704A1 (en) * 2008-11-24 2010-05-27 Caterpillar Inc. Heat Exchanger with Direct Flow Path Modules
BE1020355A3 (en) * 2011-11-28 2013-08-06 Atlas Copco Airpower Nv COMBINATION HEAT EXCHANGER AND DEVICE THAT IS EQUIPPED.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392378A (en) * 1932-01-07 1933-05-18 Bergedorfer Eisenwerk Ag Tubular refrigerant condenser applicable also for cooling liquids and more particularly milk
DE879701C (en) * 1942-11-10 1953-06-15 Koppers Gmbh Heinrich Heat exchanger
GB1098511A (en) * 1964-02-04 1968-01-10 Ind Co Kleinewefers Konst An improved heat recuperator
FR2126323A1 (en) * 1971-02-23 1972-10-06 Sanne Et Wendel As
CH535417A (en) * 1972-07-05 1973-03-31 Bbc Brown Boveri & Cie Modular heat exchanger assemblies - for load matching at minimum cost
FR2443573A1 (en) * 1978-12-08 1980-07-04 Renault Vehicules Ind COOLING CIRCUIT OF SUPERCHARGED ENGINES

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB392378A (en) * 1932-01-07 1933-05-18 Bergedorfer Eisenwerk Ag Tubular refrigerant condenser applicable also for cooling liquids and more particularly milk
DE879701C (en) * 1942-11-10 1953-06-15 Koppers Gmbh Heinrich Heat exchanger
GB1098511A (en) * 1964-02-04 1968-01-10 Ind Co Kleinewefers Konst An improved heat recuperator
FR2126323A1 (en) * 1971-02-23 1972-10-06 Sanne Et Wendel As
CH535417A (en) * 1972-07-05 1973-03-31 Bbc Brown Boveri & Cie Modular heat exchanger assemblies - for load matching at minimum cost
FR2443573A1 (en) * 1978-12-08 1980-07-04 Renault Vehicules Ind COOLING CIRCUIT OF SUPERCHARGED ENGINES

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584340A (en) * 1995-08-07 1996-12-17 Heatcraft Inc. Heat exchanger with flexible tube support
DE19545308A1 (en) * 1995-12-05 1997-06-12 Asea Brown Boveri Convective counterflow heat transmitter
US5771963A (en) * 1995-12-05 1998-06-30 Asea Brown Boveri Ag Convective countercurrent heat exchanger
EP0908691A1 (en) * 1997-10-10 1999-04-14 Societe D'etudes Et De Constructions Aero-Navales Cross-flow heat exchanger
FR2769697A1 (en) * 1997-10-10 1999-04-16 Soc Et Et De Const Aero Navale HEAT EXCHANGER OF THE ORTHOGONAL CROSSING TYPE OF TWO FLUIDS
GB2451848A (en) * 2007-08-14 2009-02-18 Arctic Circle Ltd Multiple circuit heat exchanger comprising tube bundles
US20100126704A1 (en) * 2008-11-24 2010-05-27 Caterpillar Inc. Heat Exchanger with Direct Flow Path Modules
BE1020355A3 (en) * 2011-11-28 2013-08-06 Atlas Copco Airpower Nv COMBINATION HEAT EXCHANGER AND DEVICE THAT IS EQUIPPED.

Also Published As

Publication number Publication date
EP0080742B1 (en) 1984-09-12
DK525882A (en) 1983-05-28
DK150956B (en) 1987-09-28
EP0080742A3 (en) 1983-07-06
DK150956C (en) 1988-03-28
DE3260735D1 (en) 1984-10-18

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