EP0383173A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- EP0383173A1 EP0383173A1 EP90102376A EP90102376A EP0383173A1 EP 0383173 A1 EP0383173 A1 EP 0383173A1 EP 90102376 A EP90102376 A EP 90102376A EP 90102376 A EP90102376 A EP 90102376A EP 0383173 A1 EP0383173 A1 EP 0383173A1
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- EP
- European Patent Office
- Prior art keywords
- profile
- profile tube
- points
- curve sections
- arrangement according
- 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.)
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
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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
- Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
- Y10S165/40—Shell enclosed conduit assembly
- Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
- Y10S165/416—Extending transverse of shell, e.g. fin, baffle
- Y10S165/423—Bar
Definitions
- the invention relates to a profile tube arrangement for a heat exchanger according to the preamble of patent claim 1.
- Such a profile tube arrangement has become known from DE-PS 35 43 893, in which a number of S-shaped profile tubes are attached between a collecting tube and a matrix deflection section.
- the curvature of the individual profile tubes gives rise to a number of advantages over straight profile tubes.
- this solution has the disadvantage that the individual expansion compensation of a profile tube only results in a transverse deflection with respect to the surrounding collective of profile tubes at those points where the spacers of the maximum deflection points are arranged. This prevents the expansion compensation if it exceeds the play in the spacer.
- the stringing together of curve sections according to the invention results in a complete wave train over the entire length of a profile tube, which enables a controlled buckling of an entire tube or an entire tube collective of a layer in the event of relative expansions due to thermal expansions or due to impact-related expansions or compressions in relation to their external restraint.
- the profile tubes can thus be controlled in spite of fixations fixed on both sides and a firm connection at the points of the spacers and can only expand and contract in length with slight internal stresses under the effect of temperature differences and gradients without the flow cross sections between adjacent profile tubes being changed significantly. It must be emphasized that the profile tubes are made from one piece, and the individual curve sections only represent curved sections of a profile tube.
- the significant advantage of the new shape of the profile tubes is that the spacers at their maximum Deflection points and the intermediate points can be fixed without play, whereby the collective of the profile tubes can be firmly supported against vibrations and impact forces at these points.
- the expansion compensation is then carried out by compressing or stretching the profile tubes to the length of two abutting curve sections, ie between two fixing points, which occur at least twice along an entire tube section. For the same relative expansion there are transverse deflections which are about a factor 3 less than those of known designs.
- the curve sections have constant radii of curvature, as a result of which the curve sections can be easily manufactured. It is advantageous if all curve sections have the same radius of curvature, which is approximately in the range of 1 to 2 times the length of the curve sections.
- the distances between the profile tubes which are important for the flow can be kept sufficiently large in this way, even with large temperature differences.
- the points of minimum distance between two profile tubes occur at the turning points, i.e. at the joints of two oppositely curved curve sections.
- the curve sections have sinusoidal curves.
- Two alternative embodiments of a sinusoidal curve are possible.
- two curve sections together form a complete sine wave, the imaginary angular axis representing the straight-line connection of two fixing points.
- the fixing points correspond to the angle 0 or 2 ⁇
- the turning points at which two oppositely curved curve sections meet each other correspond to the angle ⁇ 2nd corresponds.
- two curve sections together form a half cosine train. I.e. the imaginary angular axis is equally spaced parallel to the profile tube tangent at the two fixing points.
- the two fixing points thus correspond to the angles 0 and ⁇ .
- a further advantageous embodiment of the invention provides that the profile tubes have an approximately elliptical cross section, the individual curve sections being bent around the semi-axis with the lower bending resistance moment.
- Such an elliptical cross-section enables an aerodynamically more favorable flow around the individual profile tubes.
- a profile tube 1 is shown, which is attached by means of two collecting container fastening points 2a, 2b to two only partially drawn collecting containers 3a and 3b.
- One of the two collecting containers (3a, 3b) can also be a deflecting section of a U-shaped profile tube matrix, for example.
- Parallel to the profile tube 4 a plurality of similar, regularly spaced profile tubes 4 are provided which, together with the profile tube 1 shown, form a complete matrix through which a flow medium flows, for example from the collecting container 3a to the collecting container 3b is directed.
- the fluid flow flowing inside the profile tubes 1, 4 is caused to heat exchange by a fluid flow flowing past in a cross flow, the flow direction of which is designated by 12.
- the fluid flow moving within the profile tubes 1, 4 is usually heated up in the process.
- the profiled tube 1 shown consists essentially of eight curve sections 5 of equal length, which adjoin one another at the turning points 6.
- the curve sections 5 are only differently curved areas of the integrally produced profile tube 1, d. H. no large number of curve sections 5 are joined together, but rather a profile tube 1 is bent into the curve section accordingly.
- the curve sections 5 are alternately curved (to the left or to the right) to form a serpentine contour which is superimposed on an essentially S-shaped course.
- the profile tube 1 has two maximum deflection points 7a and 7b, between which an intermediate point 8 is provided which is equally distant from both points 7a, 7b.
- two curve sections 5 are arranged in such a way that the centers of curvature lie on alternately opposite sides of the profiled tube 1, so that there is an alternating left and right curvature.
- a total of four curve sections 5 lie between the maximum deflection points 7a and 7b.
- the tangents 11 to the profile tube course in the maximum deflection points 7a, 7b and in the intermediate point 8 are parallel. Furthermore, spacers 9 are provided at the points 7a, 7b and 8, by means of which the distances to adjacent profile tubes 4 - which are not shown for reasons of clarity - are maintained (fixing points).
- the tangents 11 at the collecting container attachment points 2a, 2b are also parallel to the above-mentioned tangents.
- the curve sections 5 can have constant radii of curvature so that they can be regarded as circular sections, or they can have a sinusoidal shape.
- the heat exchanger will be exposed to thermal expansions, with the collection containers 3a, 3b and the spacers 9 being able to be fixed in place at the same time.
- the radius of curvature of the curve sections 5 or the amplitude of the sinusoidal curve section 5 must be dimensioned such that the minimum distances are still so large at maximum temperature-induced expansion that the the minimum permissible flow cross-sections between adjacent profile tubes 1.4 must not be undercut.
- the radius of curvature should be selected in the range of 3-4 cm with a length of the curve sections of 2.5 cm.
- the profile tubes are 1.4 wider than in the side view according to FIG. 1, which is due to the fact that the Profile tubes have approximately elliptical cross-section.
- the inflow expediently takes place in the direction denoted by 12 and thus in the direction of the large semiaxis of the elliptical profile tubes 1, 4.
- the spacers 9 are attached along regularly spaced locations, which keep both the profile tubes spaced apart in the direction of the large ellipse half-axis and the profile tubes spaced apart in the direction of the small semi-axis (FIG. 1) at a defined distance.
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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)
Abstract
Description
Die Erfindung betrifft eine Profilrohranordnung für einen Wärmetauscher gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a profile tube arrangement for a heat exchanger according to the preamble of patent claim 1.
Aus der DE-PS 35 43 893 ist eine derartige Profilrohranordnung bekannt geworden, bei der eine Anzahl S-förmig gekrümmter Profilröhrchen zwischen einem Sammelrohr und einem Matrixumlenkabschnitt angebracht sind. Durch die Krümmung der einzelnen Profilröhrchen ergeben sich eine Reihe von Vorteilen gegenüber gradlinig verlaufenden Profilröhrchen. Diese Lösung hat jedoch den Nachteil, daß der individuelle Dehnungsausgleich eines Profilröhrchen einen Querausschlag in Bezug auf das es umgebende Kollektiv von Profilröhrchen nur an denjenigen Stellen zur Folge hat, an denen die Abstandshalter der maximalen Auslenkungspunkte angeordnet sind. Dadurch wird der Dehnungsausgleich behindert, sofern er das in der Abstandshalterung vorhandene Spiel überschreitet.Such a profile tube arrangement has become known from DE-PS 35 43 893, in which a number of S-shaped profile tubes are attached between a collecting tube and a matrix deflection section. The curvature of the individual profile tubes gives rise to a number of advantages over straight profile tubes. However, this solution has the disadvantage that the individual expansion compensation of a profile tube only results in a transverse deflection with respect to the surrounding collective of profile tubes at those points where the spacers of the maximum deflection points are arranged. This prevents the expansion compensation if it exceeds the play in the spacer.
Hiervon ausgehend ist es Aufgabe der Erfindung, eine gattungsgemäße Anordnung derart zu verbessern, daß unter allen Betriebsbedingungen ein ungehinderter Dehnungsausgleich stattfinden kann, ohne daß sich die Wärmetauscheranordnung ungezielt verformt.Proceeding from this, it is an object of the invention to improve a generic arrangement in such a way that an unimpeded expansion compensation can take place under all operating conditions without the heat exchanger arrangement deforming in a targeted manner.
Erfindungsgemäß wird die Aufgabe durch die im Kennzeichnungsteil des Patentanspruchs 1 angegebenen Merkmale gelöst.According to the invention the object is achieved by the features specified in the characterizing part of patent claim 1.
Die erfindungsgemäße Aneinanderreihung von Kurvenabschnitten ergibt über die gesamte Länge eines Profilröhrchens einen vollständigen Wellenzug, der ein kontrolliertes Ausknicken eines gesamten Röhrchens bzw. eines gesamten Röhrchenkollektivs einer Schicht bei Relativdehnungen durch Wärmedehnungen oder durch stoßbedingte Dehnungen bzw. Stauchungen im Verhältnis zu deren äußeren Einspannung ermöglicht. Die Profilröhrchen können sich somit trotz beidseitig fixierter Einspannungen und fester Verbindung an den Stellen der Abstandshalter kontrolliert und nur mit geringen inneren Spannungen unter der Wirkung von Temperaturdifferenzen und -gradienten in der Länge ausdehnen und kontrahieren, ohne daß die Strömungsquerschnitte zwischen benachbarten Profilröhrchen wesentlich verändert werden. Es muß dabei betont werden, daß die Profilröhrchen aus einem Stück gefertigt sind, und die einzelnen Kurvenabschnitte lediglich gebogene Teilabschnitte eines Profilröhrchens darstellen.The stringing together of curve sections according to the invention results in a complete wave train over the entire length of a profile tube, which enables a controlled buckling of an entire tube or an entire tube collective of a layer in the event of relative expansions due to thermal expansions or due to impact-related expansions or compressions in relation to their external restraint. The profile tubes can thus be controlled in spite of fixations fixed on both sides and a firm connection at the points of the spacers and can only expand and contract in length with slight internal stresses under the effect of temperature differences and gradients without the flow cross sections between adjacent profile tubes being changed significantly. It must be emphasized that the profile tubes are made from one piece, and the individual curve sections only represent curved sections of a profile tube.
In Folge der S-förmigen Krümmung der Profilröhrchen erfolgt der Ausgleich von Verbiegungen in der Ebene einer Profilröhrchenschicht durch Torsion der Kurvenabschnitte zwischen Abstandshaltern, wodurch ein geringerer Widerstand gegen Verbiegungen und somit geringere Spannungen gegenüber ungekrümmten Profilröhrchen erzielbar sind.As a result of the S-shaped curvature of the profiled tubes, bending in the plane of a profiled tube layer is compensated for by torsion of the curve sections between spacers, as a result of which less resistance to bending and thus lower stresses compared to non-curved profiled tubes can be achieved.
Der erhebliche Vorteil der neuen Formgestaltung der Profilröhrchen liegt darin, daß die Abstandshalter an den Stellen ihrer maximalen Auslenkungspunkte und den Zwischenpunkten spielfrei fixiert werden können, wodurch das Kollektiv der Profilröhrchen an diesen Stellen gegen Schwingungen und Stoßkräfte fest abgestützt werden kann. Der Dehnungsausgleich erfolgt dann durch Stauchen oder Strecken der Profilröhrchen auf jeweils der Länge zweier aneinander stoßender Kurvenabschnitte, d.h. zwischen je zwei Fixierpunkten, die entlang einer gesamten Rohrstrecke zumindest zweimal auftreten. Für die gleiche Relativdehnung ergeben sich dabei Querauslenkungen, die etwa um den Faktor 3 geringer sind als diejenigen von bekannten Ausführungen.The significant advantage of the new shape of the profile tubes is that the spacers at their maximum Deflection points and the intermediate points can be fixed without play, whereby the collective of the profile tubes can be firmly supported against vibrations and impact forces at these points. The expansion compensation is then carried out by compressing or stretching the profile tubes to the length of two abutting curve sections, ie between two fixing points, which occur at least twice along an entire tube section. For the same relative expansion there are transverse deflections which are about a factor 3 less than those of known designs.
In bevorzugter Weiterbildung der Erfindung weisen die Kurvenabschnitte konstante Krümmungsradien auf, wodurch eine einfache Herstellbarkeit der Kurvenabschnitte erreichbar ist. Dabei ist es von Vorteil, wenn alle Kurvenabschnitte den gleichen Krümmungsradius aufweisen, der etwa im Bereich von 1 bis 2fachen Länge der Kurvenabschnitte beträgt. Bei einem beispielsweise aus acht Kurvenabschnitten zusammengesetzten Profilröhrchen lassen sich auf diese Weise die für die Durchströmung wichtigen Abstände zwischen den Profilröhrchen auch bei großen Temperaturdifferenzen ausreichend groß halten. Die Stellen minimalen Abstandes zwischen zwei Profilröhrchen treten an den Wendepunkten auf, d.h., an Stoßstellen zweier entgegengesetzt gekrümmter Kurvenabschnitte.In a preferred development of the invention, the curve sections have constant radii of curvature, as a result of which the curve sections can be easily manufactured. It is advantageous if all curve sections have the same radius of curvature, which is approximately in the range of 1 to 2 times the length of the curve sections. In the case of a profile tube composed, for example, of eight curve sections, the distances between the profile tubes which are important for the flow can be kept sufficiently large in this way, even with large temperature differences. The points of minimum distance between two profile tubes occur at the turning points, i.e. at the joints of two oppositely curved curve sections.
In alternativer Ausbildung der Erfindung weisen die Kurvenabschnitte sinusförmigen Kurvenverlauf auf. Dabei sind zwei alternative Ausführungsformen eines sinusförmigen Kurvenverlaufes möglich. Gemäß einer bevorzugten Alternative bilden zwei Kurvenabschnitte zusammen einen vollständigen Sinuszug, wobei die gedachte Winkelachse die gradlinige Verbindung zweier Fixierpunkte darstellt. Somit entsprechen die Fixierpunkte dem Winkel 0 bzw. 2π während die Wendestellen, an denen zwei entgegengesetzt gekrümmte Kurvenabschnitte auf einander treffen dem Winkel
Gemäß einer alternativen Ausführungsform bilden zwei Kuvenabschnitte zusammen einen halben Kosinuszug. D. h. die gedachte Winkelachse ist parallel gleich beabstandet zu den Profilröhrchentangenten an den beiden Fixierstellen. Die beiden Fixierstellen entsprechen somit den Winkeln 0 und π.According to an alternative embodiment, two curve sections together form a half cosine train. I.e. the imaginary angular axis is equally spaced parallel to the profile tube tangent at the two fixing points. The two fixing points thus correspond to the angles 0 and π.
Eine weitere vorteilhafte Ausbildung der Erfindung sieht vor, daß die Profilröhrchen etwa ellipsenartigen Querschnitt aufweisen, wobei die einzelnen Kurvenabschnitte um die Halbachse mit dem geringeren Biegewiderstandmoment gebogen sind. Ein derartig ellipsenartiger Querschnitt ermöglicht eine aerodynamisch günstigere Umströmung der einzelnen Profilröhrchen. Alternativ wäre es doch auch denkbar die Profilröhrchen mit Kreisquerschnitt zu fertigen, um eine vereinfachte Herstellung zu erzielen.A further advantageous embodiment of the invention provides that the profile tubes have an approximately elliptical cross section, the individual curve sections being bent around the semi-axis with the lower bending resistance moment. Such an elliptical cross-section enables an aerodynamically more favorable flow around the individual profile tubes. Alternatively, it would also be conceivable to manufacture the profile tubes with a circular cross section in order to achieve simplified production.
Die Erfindung wird nachfolgend anhand der beigefügten Zeichnungen näher erläutert. Dabei zeigt:
- Fig. 1 eine schematische Seitenansicht eines Profilröhrchens,
- Fig. 2 eine Draufsicht auf eine Profilröhrchenreihe.
- 1 is a schematic side view of a profile tube,
- Fig. 2 is a plan view of a row of profile tubes.
In Fig. 1 ist ein Profilröhrchen 1 dargestellt, daß mittels zweier Sammelbehälterbefestigungspunkte 2a, 2b an zwei nur teilweise gezeichneten Sammelbehältern 3a und 3b angebracht ist. Dabei kann einer der beiden Sammelbehälter (3a, 3b) auch ein Umlenkabschnitt einer beispielsweise U-förmigen Profilrohrmatrix sein. Parallel zum Profilröhrchen 4 sind eine Vielzahl gleichartiger, regelmäßig beabstandeter Profilröhrchen 4 vorgesehen, die zusammen mit dem gezeigten Profilröhrchen 1 eine vollständige Matrix bilden, durch die ein Strömungsmedium beispielsweise vom Sammelbehälter 3a zum Sammelbehälter 3b geleitet wird. Dabei wird der innerhalb der Profilröhrchen 1,4 fließende Fluidstrom von einem außen im Kreuzstrom vorbeifließenden Fluidstrom, dessen Strömungsrichtung mit 12 bezeichnet ist, zum Wärmetausch veranlaßt. Üblicherweise wird der innerhalb der Profilröhrchen 1,4 bewegende Fluidstrom dabei aufheizt.In Fig. 1, a profile tube 1 is shown, which is attached by means of two collecting
Das dargestellte Profilröhrchen 1 besteht im wesentlichen aus acht gleichlangen Kurvenabschnitten 5, die an den Wendestellen 6 aneinander anschließen. Dabei sind die Kurvenabschnitte 5 nur verschieden gekrümmte Bereiche des integral hergestellten Profilröhrchens 1, d. h. es werden keine Vielzahl von Kurvenabschnitten 5 zusammengefügt, sondern ein Profilröhrchen 1 wird entsprechend in die Kurvenabschnitt gebogen. Ferner sind die Kurvenabschnitte 5 abwechselnd entgegengesetzt (nach links bzw. nach rechts) gekrümmt zur Bildung einer schlangenlinienartigen Kontur, die einem im wesentlichen S-förmigen Verlauf überlagert ist.The profiled tube 1 shown consists essentially of eight curve sections 5 of equal length, which adjoin one another at the turning points 6. The curve sections 5 are only differently curved areas of the integrally produced profile tube 1, d. H. no large number of curve sections 5 are joined together, but rather a profile tube 1 is bent into the curve section accordingly. Furthermore, the curve sections 5 are alternately curved (to the left or to the right) to form a serpentine contour which is superimposed on an essentially S-shaped course.
Das Profilröhrchen 1 weist zwei Maximalauslenkungspunkte 7a und 7b auf, zwischen denen ein von beiden Punkten 7a, 7b gleichweit entfernter Zwischenpunkt 8 vorgesehen ist. Im Bereich zwischen den Maximalauslenkungspunkten 7a und 7b sind je zwei Kurvenabschnitte 5 so angeordnet, daß die Krümmungsmittelpunkte auf abwechselnd entgegengesetzten Seiten des Profilröhrchens 1 liegen, so daß alternierend eine Links- und Rechtskrümmung vorhanden ist. Insgesamt liegen vier Kurvenabschnitte 5 zwischen den Maximalauslenkungspunkten 7a und 7b.The profile tube 1 has two
Die Tangenten 11 an den Profilröhrchensverlauf in den Maximalauslenkungspunkten 7a, 7b und im Zwischenpunkt 8 sind parallel. Ferner sind an den Punten 7a, 7b und 8 Abstandshalter 9 vorgesehen, mittels deren die Abstände zu benachbarten Profilröhrchen 4 - die aus Übersichtsgründen nicht eingezeichnet sind - eingehalten werden (Fixierpunkte). Die Tangenten 11 an den Sammelbehälterbefestigungspunkten 2a, 2b sind ebenfalls parallel zu den obengenannten Tangenten.The
Die Kurvenabschnitte 5 können konstante Krümmungsradien aufweisen, so daß sie als Kreisabschnitte anzusehen sind, oder sie können sinusförmigen Verlauf haben.The curve sections 5 can have constant radii of curvature so that they can be regarded as circular sections, or they can have a sinusoidal shape.
Im Betrieb wird der Wärmetauscher thermischen Dehnungen ausgesetzt sein, wobei gleichzeitig die Sammelbehälter 3a, 3b und die Abstandshalter 9 ortsfest fixiert sein können..Dadurch ergibt sich der mit 10 bezeichnete, gestrichelt eingezeichnete Verlauf des Profilröhrchens 1, der also eine Thermodehnung des Profilröhrchens zuläßt ohne daß eine Gesamtformänderung des Wärmetauschers eintritt. Bei einer derartigen thermisch bedingten Verformung der Kurvenabschnitte 5 des Profilröhrchens 1 tritt an denjenigen Wendestellen 6, die nicht gleichzeitig Fixierpunkte 7a, 7b, 8 sind die größtmögliche Annäherung benachbarter Profilröhrchen auf, während aufgrund der Abstandshalter 9 an den letztgenannten Punkten keinerlei Veränderung des Abstandes zwischen einzelnen Profilröhrchen zu beobachten ist. Um unter allen Betriebsbedingungen eine für den Durchfluß notwendigen Mindestabstand benachbarter Profilröhrchen 1, 4 zu erhalten, ist der Krümmungradius der Kurvenabschnitte 5 bzw. die Amplitude des sinusförmigen Kurvenabschnittes 5 derart zu bemessen, daß bei maximaler temperaturinduzierter Dehnung die Minimalabstände noch so groß sind, daß die minimal zulässigen Strömungsquerschnitte zwischen benachbarten Profilröhrchen 1,4 nicht unterschritten werden. Beispielsweise bei einer Dicke der Profilröhrchen 1,4 von 1,6 mm und einer Temperaturdifferenz zwischen warmem und kaltem Zustand von 100 K ist der Krümmungsradius bei einer Länge der Kurvenabschnitte von 2,5 cm etwa im Bereich von 3 - 4 cm zu wählen.In operation, the heat exchanger will be exposed to thermal expansions, with the
Bei der in Fig. 2 dargestellten Draufsicht auf eine Profilröhrchenreihe ist zu sehen, daß die Profilröhrchen 1,4 breiter sind als in der Seitenansicht gemäß Fig. 1, was darauf zurückzuführen ist, daß die Profilröhrchen etwa ellipsenförmigen Querschnitt aufweisen. Zweckmäßigerweise erfolgt die Anströmung in der mit 12 bezeichneten Richtung und somit in Richtung der großen Halbachse der ellipsenfömigen Profilröhrchen 1,4. Entlang regelmäßig beabstandeter Stellen sind die Abstandshalter 9 angebracht, die sowohl in Richtung der großen Ellipsenhalbachse beabstandeten Profilröhrchen als auch die in Richtung der kleinen Halbachse beabstandeten Profilröhrchen (Fig. 1) in einem definierten Abstand halten.In the plan view of a row of profile tubes shown in FIG. 2 it can be seen that the profile tubes are 1.4 wider than in the side view according to FIG. 1, which is due to the fact that the Profile tubes have approximately elliptical cross-section. The inflow expediently takes place in the direction denoted by 12 and thus in the direction of the large semiaxis of the
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE3904140A DE3904140C1 (en) | 1989-02-11 | 1989-02-11 | |
DE3904140 | 1989-02-11 |
Publications (2)
Publication Number | Publication Date |
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EP0383173A1 true EP0383173A1 (en) | 1990-08-22 |
EP0383173B1 EP0383173B1 (en) | 1993-04-28 |
Family
ID=6373895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP90102376A Expired - Lifetime EP0383173B1 (en) | 1989-02-11 | 1990-02-07 | Heat exchanger |
Country Status (5)
Country | Link |
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US (1) | US5058663A (en) |
EP (1) | EP0383173B1 (en) |
JP (1) | JPH02233991A (en) |
DE (1) | DE3904140C1 (en) |
ES (1) | ES2040520T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0842982A (en) * | 1994-05-17 | 1996-02-16 | Hde Metallwerk Gmbh | High efficiency type capillary type heat exchanger |
US20040069470A1 (en) * | 2002-09-10 | 2004-04-15 | Jacob Gorbulsky | Bent-tube heat exchanger |
CN103307813B (en) * | 2013-07-05 | 2016-08-17 | 丹佛斯微通道换热器(嘉兴)有限公司 | Heat exchanger and manufacturing process thereof |
EP4306786A3 (en) * | 2022-07-15 | 2024-04-03 | RTX Corporation | Aircraft heat exchanger |
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US3212570A (en) * | 1963-08-28 | 1965-10-19 | Trane Co | Heat exchanger |
US3336974A (en) * | 1965-05-05 | 1967-08-22 | United Aircraft Corp | Serpentine tube boiler |
SU399709A1 (en) * | 1967-05-20 | 1973-10-03 | HEAT EXCHANGE ELEMENT | |
US3605872A (en) * | 1968-08-15 | 1971-09-20 | Wiegand Apparatebau Gmbh | Method of causing a liquid to flow in a stream of annular cross section |
US3989105A (en) * | 1972-02-22 | 1976-11-02 | Georges Trepaud | Heat exchanger |
US3848430A (en) * | 1973-09-13 | 1974-11-19 | Trane Co | Absorption refrigeration machine with second stage generator |
FR2293684A2 (en) * | 1974-12-05 | 1976-07-02 | Trepaud Georges | TUBULAR BEAM HEAT EXCHANGER |
DE2535075A1 (en) * | 1975-08-06 | 1977-02-24 | Lass Geb Friedewald Eva | Mixer type throorrrrough flow heat exchanger - has snakelike pipework meander within mixer container body to increase surface area |
JPS539322A (en) * | 1976-07-12 | 1978-01-27 | Kyowa Hakko Kogyo Co Ltd | Analgesics |
FR2355191A1 (en) * | 1976-06-16 | 1978-01-13 | Creusot Loire | DEVICE FOR HOLDING A TAPE OF TUBES WITHIN A SPEAKER |
US4573528A (en) * | 1981-01-08 | 1986-03-04 | Georges Trepaud | Heat exchangers with clusters of straight or corrugated tubes, especially to systems for supporting the tubes at fixed and movable axial levels |
DE3329202A1 (en) * | 1983-08-12 | 1985-02-21 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | PROFILE TUBE HEAT EXCHANGER |
-
1989
- 1989-02-11 DE DE3904140A patent/DE3904140C1/de not_active Expired - Lifetime
-
1990
- 1990-02-07 JP JP2026248A patent/JPH02233991A/en active Pending
- 1990-02-07 EP EP90102376A patent/EP0383173B1/en not_active Expired - Lifetime
- 1990-02-07 ES ES199090102376T patent/ES2040520T3/en not_active Expired - Lifetime
- 1990-02-09 US US07/478,210 patent/US5058663A/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH223395A (en) * | 1940-10-17 | 1942-09-15 | Oerlikon Maschf | Heat exchanger. |
US2519084A (en) * | 1945-03-13 | 1950-08-15 | Westinghouse Electric Corp | Shell and tube heat exchanger having zig-zag tubes |
FR2266866A2 (en) * | 1974-04-03 | 1975-10-31 | Trepaud Georges | Heat exchanger with tube bundle - having tubes each shaped in wave-form and having supports preventing axial rotation |
FR2540984A1 (en) * | 1983-02-11 | 1984-08-17 | Trepaud Pierre | Heat-exchanger apparatus, in particular steam generator |
DE3401567A1 (en) * | 1984-01-18 | 1985-07-25 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Pipe manifold arrangement of a heat exchanger |
EP0228581A1 (en) * | 1985-12-12 | 1987-07-15 | Mtu Motoren- Und Turbinen-Union MàNchen Gmbh | Heat-exchanger |
Also Published As
Publication number | Publication date |
---|---|
ES2040520T3 (en) | 1993-10-16 |
US5058663A (en) | 1991-10-22 |
JPH02233991A (en) | 1990-09-17 |
DE3904140C1 (en) | 1990-04-05 |
EP0383173B1 (en) | 1993-04-28 |
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