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EP0547309A1 - Corrugated rib for a flat tube heat-exchanger - Google Patents

Corrugated rib for a flat tube heat-exchanger Download PDF

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Publication number
EP0547309A1
EP0547309A1 EP92116971A EP92116971A EP0547309A1 EP 0547309 A1 EP0547309 A1 EP 0547309A1 EP 92116971 A EP92116971 A EP 92116971A EP 92116971 A EP92116971 A EP 92116971A EP 0547309 A1 EP0547309 A1 EP 0547309A1
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EP
European Patent Office
Prior art keywords
corrugated fin
gills
gill
stiffening bead
flat tubes
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
EP92116971A
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German (de)
French (fr)
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EP0547309B1 (en
Inventor
Josef Kreutzer
Kurt Mauch
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Mahle Behr GmbH and Co KG
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Behr GmbH and Co KG
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Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins

Definitions

  • the invention relates to a corrugated fin for a flat tube heat exchanger according to the preamble of claim 1.
  • Such corrugated fins are known, e.g. by the applicant's water / air cooler.
  • corrugated fins are arranged between the flat tubes of the cooler and are soldered to the flat tubes.
  • these corrugated fins also have a supporting function in such a way that they prevent the flat tubes from bulging when they are subjected to internal pressure. Since the corrugated fins should be made as thin as possible with a view to a high heat transfer performance and a low weight, there is a risk that these corrugated fins will buckle under the pressure of the flat tubes, which tend to "inflate". This problem was also described in the earlier application P 40 31 577 by the applicant and was solved there by other means, namely so-called support means between the flat tubes in the area of the tube sheets.
  • This object is solved by the characterizing features of claim 1, i.e. by the arrangement of a stiffening bead that runs transversely to the long sides of the flat tubes.
  • This stiffening bead achieves a significant stiffening of the corrugated fin and thus prevents the flat tube from bulging when subjected to internal pressure and thus causing the corrugated fin to buckle. Due to the favorable arrangement and design of this stiffening bead, there has been no increase in the pressure drop in the direction of ventilation flow and therefore also no loss of performance; the weight and thickness of the rib were not changed.
  • the shape or shape of the bead alone resulted in an increase in strength, i.e. an increase in kink resistance in such a way that the flat tubes could be subjected to a higher internal pressure than was possible without such a stiffening bead.
  • the stiffening bead is roof-shaped, it extends over the entire width of the corrugated fin, that is to say transversely to the air flow direction, and is arranged in the central region of the fin depth, that is to say seen in the air flow direction, where it has the greatest effect, since there the greatest stress occurs due to the bulging of the flat tubes.
  • a corrugated fin 1 is shown, which is located between dashed flat tubes 2 of a heat exchanger, not shown, which is preferably the water / air cooler for a motor vehicle driven by an internal combustion engine.
  • the flat tubes 2 are flowed through by coolant, which can be under a pressure of several bars during operation.
  • the corrugated fin 1 is acted upon by ambient air and thus dissipates the heat of the coolant to the environment.
  • the corrugated fin 1 is soldered to the outer wall of the flat tubes 2 in a manner not shown in order to ensure an improved heat transfer.
  • the corrugated fin itself is approximately zigzag or accordion-shaped and on the one hand has flat regions 3 and rounded regions 4 arranged at an angle to one another, on which the corrugated fin is soldered to the flat tubes 2.
  • Fig. 2 the arrangement of the corrugated fin 1 between the flat tubes 2 is shown schematically in another view, namely in the direction of the tube axes.
  • the two cutting planes CC and DD are also drawn in there. Accordingly, Fig. 1 is a section in the plane DD.
  • Fig. 3 shows a section in the plane CC through the corrugated fin 1, wherein it can be seen that the corrugated fin has a plurality of gills 5 seen in the air flow direction, the gills 5 'of the first half of the ribs having a gill angle ⁇ and the ribs 5''of the second rib half also have a gill angle ⁇ , which is opposite to the angle ⁇ , but the same amount.
  • the angle ⁇ is the supplementary angle to 180 °.
  • a stiffening bead 6 is provided according to the invention, which is shown in more detail in FIG. 5 and is described in more detail below.
  • the corrugated fin is turned over, as shown in detail Z, ie in FIG. 4.
  • This envelope or hem of the corrugated rib on its two edges also achieves a certain stiffening effect and stabilization of the edge.
  • FIG. 5 shows the actual invention, ie the stiffening bead 6 in more detail, only the detail X from FIG. 3 with an adjacent gill 5 ′ and 5 ′′ being shown here.
  • the air flow therefore takes place in the direction of the arrow in the drawing from left to right, but it can equally well take place from right to left, since the corrugated fin is constructed symmetrically with respect to the central axis.
  • This is shown by the gill angles ⁇ , which are opposite but the same amount, the angle ⁇ being approximately in the range of 30 °.
  • the angle ⁇ is the supplementary angle to 180 °.
  • the stiffening bead 6 is arranged, which in turn is roof-shaped, ie two roof-shaped has mutually inclined surfaces 7 and 8, which enclose an angle ⁇ , which can be in the range of approximately 180 ° -2 ⁇ .
  • ⁇ which can be in the range of approximately 180 ° -2 ⁇ .
  • this roof-shaped design practically causes no increase in pressure loss in the air flow direction.
  • the "ridge" of the roof-shaped stiffening bead 6 rises only insignificantly, ie with the amount h over the plane of the rib surface.
  • the thickness of the rib is marked with s and is approximately 0.1 mm, the rib preferably being made from an aluminum alloy.
  • the height h is approximately 1 to 2.5 times the rib thickness s.
  • the stiffening bead 6 is produced by a simple embossing process during the manufacture of the rib as it passes through the fin rollers and thus requires no special effort.
  • the mode of operation of the stiffening bead becomes particularly clear when one takes a look at FIG. 2, where the stiffening bead is located in the area of the sectional plane D-D. If, due to the application of internal pressure, the flat tubes tend to inflate in the middle area, the stiffening bead 6 opposes this deformation process with increased resistance in this area, so that inflation of the tubes and an associated buckling of the corrugated fin is avoided. With this simple measure, which has practically no disadvantages, the supporting effect of the corrugated fin can be increased and the buckling of the corrugated fin can thus be relocated to a region of higher internal pressures in the flat tubes.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A corrugated fin (1) is arranged between the flat tubes (2) of the heat exchanger, soldered thereto and has air applied to it, gills (5) being provided in the corrugated fin (1) transverse to the direction of air flow. It is proposed that, seen in the direction of air flow, at least one stiffening crease (6) is formed in the corrugated fin (1) between the gills (5) and transverse to the direction of air flow. The advantage is achieved in this way that the corrugated fins (1) are given a higher stiffness with regard to crumpling, in particular when the flat tubes (2) tend to bulge out as a consequence of the internal pressure. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Wellrippe für einen Flachrohrwärmetauscher nach dem Oberbegriff des Patentanspruchs 1. Derartige Wellrippen sind bekannt, z.B. durch Wasser-/Luftkühler der Anmelderin.The invention relates to a corrugated fin for a flat tube heat exchanger according to the preamble of claim 1. Such corrugated fins are known, e.g. by the applicant's water / air cooler.

Bei heutigen Wasser-/Luftkühlern für Kraftfahrzeuge sind zwischen den Flachrohren des Kühlers Wellrippen angeordnet und mit den Flachrohren verlötet. Neben der Aufgabe der Wärmeübertragung fällt diesen Wellrippen auch eine Abstützfunktion in der Weise zu, daß sie ein Ausbeulen der Flachrohre, wenn diese mit Innendruck beaufschlagt werden, verhindern. Da die Wellrippen im Hinblick auf eine hohe Wärmeübertragungsleistung und ein geringes Gewicht möglichst dünn ausgebildet werden sollen, besteht die Gefahr, daß diese Wellrippen unter dem Druck der Flachrohre, die zum "Aufblähen" neigen, einknicken. Diese Problematik wurde auch in der älteren Anmeldung P 40 31 577 der Anmelderin beschrieben und dort mit anderen Mitteln, nämlich sogenannten Abstützmitteln zwischen den Flachrohren im Bereich der Rohrböden, gelöst.In today's water / air coolers for motor vehicles, corrugated fins are arranged between the flat tubes of the cooler and are soldered to the flat tubes. In addition to the task of heat transfer, these corrugated fins also have a supporting function in such a way that they prevent the flat tubes from bulging when they are subjected to internal pressure. Since the corrugated fins should be made as thin as possible with a view to a high heat transfer performance and a low weight, there is a risk that these corrugated fins will buckle under the pressure of the flat tubes, which tend to "inflate". This problem was also described in the earlier application P 40 31 577 by the applicant and was solved there by other means, namely so-called support means between the flat tubes in the area of the tube sheets.

Es ist Aufgabe der vorliegenden Erfindung, eine verbesserte Wellrippe der eingangs genannten Art zu schaffen, die ein Einknicken bei Innendruckbeaufschlagung der Flachrohre vermeidet und bei Beibehaltung des günstigen Gewichts und einer hohen Wärmeübertragungsleistung ein Ausbeulen der Flachrohre verhindert.It is an object of the present invention to provide an improved corrugated fin of the type mentioned at the outset, which prevents buckling when the flat tubes are subjected to internal pressure and prevents buckling of the flat tubes while maintaining the favorable weight and high heat transfer performance.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst, d.h. durch die Anordnung einer Versteifungssicke, die quer zu den Längsseiten der Flachrohre verläuft. Durch diese Versteifungssicke wird eine nennenswerte Versteifung der Wellrippe erreicht und damit verhindert, daß das Flachrohr bei Innendruckbeaufschlagung ausbeult und somit die Wellrippe einknicken läßt. Durch günstige Anordnung und Ausbildung dieser Versteifungssicke hat sich keine Erhöhung des Druckabfalles in Lüftdurchströmungsrichtung ergeben und somit auch keine Leistungseinbuße; auch das Gewicht bzw. die Dicke der Rippe wurde nicht verändert. Allein durch die Formgestaltung bzw. Ausprägung der Sicke ergab sich eine Festigkeitssteigerung, d.h. eine Erhöhung der Knicksicherheit in der Weise, daß die Flachrohre mit einem höheren Innendruck beaufschlagt werden konnten, als dies ohne eine derartige Versteifungssicke möglich war.This object is solved by the characterizing features of claim 1, i.e. by the arrangement of a stiffening bead that runs transversely to the long sides of the flat tubes. This stiffening bead achieves a significant stiffening of the corrugated fin and thus prevents the flat tube from bulging when subjected to internal pressure and thus causing the corrugated fin to buckle. Due to the favorable arrangement and design of this stiffening bead, there has been no increase in the pressure drop in the direction of ventilation flow and therefore also no loss of performance; the weight and thickness of the rib were not changed. The shape or shape of the bead alone resulted in an increase in strength, i.e. an increase in kink resistance in such a way that the flat tubes could be subjected to a higher internal pressure than was possible without such a stiffening bead.

In weiterer Ausgestaltung der Erfindung ist die Versteifungssicke dachförmig ausgebildet, sie erstreckt sich über die gesamte Breite der Wellrippe, also quer zur Luftströmungsrichtung und ist im mittleren Bereich der Rippentiefe, also in Luftströmungsrichtung gesehen, angeordnet, wo sie die größte Wirkung hat, da dort die größte Spannung aufgrund des Ausbeulens der Flachrohre auftritt.In a further embodiment of the invention, the stiffening bead is roof-shaped, it extends over the entire width of the corrugated fin, that is to say transversely to the air flow direction, and is arranged in the central region of the fin depth, that is to say seen in the air flow direction, where it has the greatest effect, since there the greatest stress occurs due to the bulging of the flat tubes.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.

Es zeigen:

Fig. 1
eine Wellrippe zwischen Flachrohren in Luftströmungsrichtung gesehen;
Fig. 2
eine Wellrippe zwischen Flachrohren, in Richtung der Rohrachsen gesehen;
Fig. 3
einen Schnitt durch eine Wellrippe längs der Schnittlinie C-C;
Fig. 4
eine Einzelheit Z;
Fig. 5
eine weitere Einzelheit X, d.h. die Versteifungssicke.
Show it:
Fig. 1
seen a corrugated fin between flat tubes in the air flow direction;
Fig. 2
a corrugated fin between flat tubes, seen in the direction of the tube axes;
Fig. 3
a section through a corrugated fin along the section line CC;
Fig. 4
a detail Z;
Fig. 5
another detail X, ie the stiffening bead.

In Fig. 1 ist eine Wellrippe 1 dargestellt, die sich zwischen gestrichelt dargestellten Flachrohren 2 eines nicht weiter dargestellten Wärmetauschers befindet, bei dem es sich vorzugsweise um den Wasser-/Luftkühler für ein Kraftfahrzeug mit Antrieb durch eine Brennkraftmaschine handelt. Die Flachrohre 2 werden dabei von Kühlmittel durchströmt, welches während des Betriebes unter einem Druck von mehreren Bar stehen kann. Die Wellrippe 1 wird von Umgebungsluft beaufschlagt und führt somit die Wärme des Kühlmittels an die Umgebung ab. Dafür ist die Wellrippe 1 in nicht näher dargestellter Weise mit der Außenwandung der Flachrohre 2 verlötet, um einen verbesserten Wärmedurchgang zu gewährleisten. Die Wellrippe selbst ist etwa zickzackartig oder zieharmonikaartig ausgebildet und weist einerseits im Winkel zueinander angeordnete ebene Bereiche 3 und gerundete Bereiche 4 auf, an welchen die Wellrippe mit den Flachrohren 2 verlötet ist. In den ebenen Bereichen 3 sind sogenannte Kiemen 5 angeordnet, die an sich bekannt sind und die der Verbesserung der Wärmeübertragung an die Umgebungsluft dienen.In Fig. 1 a corrugated fin 1 is shown, which is located between dashed flat tubes 2 of a heat exchanger, not shown, which is preferably the water / air cooler for a motor vehicle driven by an internal combustion engine. The flat tubes 2 are flowed through by coolant, which can be under a pressure of several bars during operation. The corrugated fin 1 is acted upon by ambient air and thus dissipates the heat of the coolant to the environment. For this purpose, the corrugated fin 1 is soldered to the outer wall of the flat tubes 2 in a manner not shown in order to ensure an improved heat transfer. The corrugated fin itself is approximately zigzag or accordion-shaped and on the one hand has flat regions 3 and rounded regions 4 arranged at an angle to one another, on which the corrugated fin is soldered to the flat tubes 2. So-called gills 5, which are known per se and which serve to improve the heat transfer to the ambient air, are arranged in the flat regions 3.

In Fig. 2 ist in einer anderen Ansicht, nämlich in Richtung der Rohrachsen gesehen, die Anordnung der Wellrippe 1 zwischen den Flachrohren 2 schematisch dargestellt. Dort sind auch die beiden Schnittebenen C-C und D-D eingezeichnet. Demnach ist Fig. 1 also ein Schnitt in der Ebene D-D.In Fig. 2 , the arrangement of the corrugated fin 1 between the flat tubes 2 is shown schematically in another view, namely in the direction of the tube axes. The two cutting planes CC and DD are also drawn in there. Accordingly, Fig. 1 is a section in the plane DD.

Fig. 3 zeigt einen Schnitt in der Ebene C-C durch die Wellrippe 1, wobei erkennbar wird, daß die Wellrippe in Luftströmungsrichtung gesehen eine Vielzahl von Kiemen 5 aufweist, wobei die Kiemen 5' der ersten Rippenhälfte einen Kiemenwinkel α und die Rippen 5'' der zweiten Rippenhälfte auch einen Kiemenwinkel α aufweisen, welcher dem Winkel α entgegengesetzt, aber betragsmäßig gleich ist. Der Winkel β ist der Ergänzungswinkel zu 180°. Im mittleren Bereich der Rippentiefe ist erfindungsgemäß eine Versteifungssicke 6 vorgesehen, die genauer in Fig. 5 dargestellt ist und unten näher beschrieben wird. Am Anfang und am Ende, in Luftströmungsrichtung gesehen, der Wellrippe ist diese umgeschlagen, wie dies in der Einzelheit Z, d.h. in Fig. 4 dargestellt ist. Durch diesen Umschlag oder Saum der Wellrippe an ihren beiden Rändern wird ebenfalls ein gewisser Versteigungseffekt und eine Stabilisierung der Kante erreicht. Fig. 3 shows a section in the plane CC through the corrugated fin 1, wherein it can be seen that the corrugated fin has a plurality of gills 5 seen in the air flow direction, the gills 5 'of the first half of the ribs having a gill angle α and the ribs 5''of the second rib half also have a gill angle α, which is opposite to the angle α, but the same amount. The angle β is the supplementary angle to 180 °. In the central region of the rib depth, a stiffening bead 6 is provided according to the invention, which is shown in more detail in FIG. 5 and is described in more detail below. At the beginning and at the end, seen in the air flow direction, the corrugated fin is turned over, as shown in detail Z, ie in FIG. 4. This envelope or hem of the corrugated rib on its two edges also achieves a certain stiffening effect and stabilization of the edge.

In Fig. 5 ist die eigentliche Erfindung, d.h. die Versteifungssicke 6 genauer dargestellt, wobei hier lediglich die Einzelheit X aus der Fig. 3 mit jeweils einer benachbarten Kieme 5' und 5'' dargestellt ist. Die Luftströmung erfolgt also in Richtung des Pfeiles in der Zeichnung von links nach rechts, sie kann allerdings ebensogut von rechts nach links erfolgen, da die Wellrippe in Bezug auf die Mittelachse symmetrisch aufgebaut ist. Dies zeigen die Kiemenwinkel α, die entgegengesetzt, aber betragsmäßig gleich sind, wobei der Winkel α etwa im Bereich von 30° liegt. Der Winkel β ist der Ergänzungswinkel zu 180°. Zwischen den beiden Kiemen 5' und 5'' ist ein kiemenfreier Bereich vorgesehen, in dessen Mitte die Versteifungssicke 6 angeordnet ist, die ihrerseits dachförmig ausgebildet ist, d.h. zwei dachförmig gegeneinander geneigte Flächen 7 und 8 aufweist, die einen Winkel τ einschließen, der im Bereich von ungefähr 180° -2 α liegen kann. Dies bedeutet, daß die Flächen 7 und 8 etwa parallel zu den Kiemenflächen 5' und 5'' verlaufen. Somit wird durch diese dachförmige Ausbildung praktisch keine Erhöhung des Druckverlustes in Luftströmungsrichtung bewirkt. Der "First" der dachförmig ausgebildeten Versteifungssicke 6 erhebt sich nur unwesentlich, d.h.mit dem Betrag h über die Ebene der Rippenoberfläche. Die Dicke der Rippe ist mit s gekennzeichnet und beträgt etwa 0,1 mm, wobei die Rippe vorzugsweise aus einer Aluminiumlegierung hergestellt ist. Die Höhe h ist etwa das 1 bis 2,5-fache der Rippendicke s. Die Versteifungssicke 6 wird durch einen einfachen Prägevorgang während der Herstellung der Rippe beim Durchlauf durch die Rippenwalzen hergestellt und bedarf somit keines besonderen Aufwandes. 5 shows the actual invention, ie the stiffening bead 6 in more detail, only the detail X from FIG. 3 with an adjacent gill 5 ′ and 5 ″ being shown here. The air flow therefore takes place in the direction of the arrow in the drawing from left to right, but it can equally well take place from right to left, since the corrugated fin is constructed symmetrically with respect to the central axis. This is shown by the gill angles α, which are opposite but the same amount, the angle α being approximately in the range of 30 °. The angle β is the supplementary angle to 180 °. Between the two gills 5 'and 5''a gill-free area is provided, in the middle of which the stiffening bead 6 is arranged, which in turn is roof-shaped, ie two roof-shaped has mutually inclined surfaces 7 and 8, which enclose an angle τ, which can be in the range of approximately 180 ° -2 α. This means that the surfaces 7 and 8 run approximately parallel to the gill surfaces 5 'and 5''. Thus, this roof-shaped design practically causes no increase in pressure loss in the air flow direction. The "ridge" of the roof-shaped stiffening bead 6 rises only insignificantly, ie with the amount h over the plane of the rib surface. The thickness of the rib is marked with s and is approximately 0.1 mm, the rib preferably being made from an aluminum alloy. The height h is approximately 1 to 2.5 times the rib thickness s. The stiffening bead 6 is produced by a simple embossing process during the manufacture of the rib as it passes through the fin rollers and thus requires no special effort.

Die Wirkungsweise der Versteifungsicke wird besonders klar, wenn man einen Blick auf Fig. 2 wirft, wo sich die Versteifungssicke im Bereich der Schnittebene D-D befindet. Wenn die Flachrohre infolge Innendruckbeaufschlagung dazu neigen, sich im mittleren Bereich aufzublähen, setzt die Versteifungssicke 6 in diesem Bereich diesem Verformungsvorgang einen verstärkten Widerstand entgegen, so daß ein Aufblähen der Rohre und ein damit verbundenes Einknicken der Wellrippe vermieden wird. Mit dieser einfachen Maßnahme, die praktisch keine Nachteile mit sich bringt, kann die Abstützwirkung der Wellrippe gesteigert und somit das Einknicken der Wellrippe in einen Bereich höherer Innendrücke in den Flachrohren verlegt werden.The mode of operation of the stiffening bead becomes particularly clear when one takes a look at FIG. 2, where the stiffening bead is located in the area of the sectional plane D-D. If, due to the application of internal pressure, the flat tubes tend to inflate in the middle area, the stiffening bead 6 opposes this deformation process with increased resistance in this area, so that inflation of the tubes and an associated buckling of the corrugated fin is avoided. With this simple measure, which has practically no disadvantages, the supporting effect of the corrugated fin can be increased and the buckling of the corrugated fin can thus be relocated to a region of higher internal pressures in the flat tubes.

Claims (5)

Wellrippe für Flachrohrwärmetauscher, die zwischen den Flachrohren (2) eines Wärmetauschers angeordnet, mit diesen verlötet und von Luft beaufschlagt ist, mit quer zur Luftströmungsrichtung angeordneten Kiemen (5), dadurch gekennzeichnet, daß zwischen den Kiemen (5) und quer zur Luftströmungsrichtung mindestens eine Versteifungssicke (6) in die Wellrippe (1) eingeformt ist.Corrugated fin for flat tube heat exchangers, which is arranged between the flat tubes (2) of a heat exchanger, soldered to them and exposed to air, with gills (5) arranged transversely to the air flow direction, characterized in that at least one between the gills (5) and transversely to the air flow direction Stiffening bead (6) is formed in the corrugated fin (1). Wellrippe nach Anspruch 1, dadurch gekennzeichnet, daß eine Versteifungssicke (6) etwa in der Mitte der Wellrippentiefe (in Luftströmungsrichtung gesehen) vorgesehen ist.Corrugated fin according to claim 1, characterized in that a stiffening bead (6) is provided approximately in the middle of the corrugated fin depth (seen in the direction of air flow). Wellrippe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Versteifungssicke (6) dachförmig ausgeprägt ist und sich annähernd über die gesamte Breite (3) des Wellrippenabschnittes zwischen benachbarten Flachrohren (2) erstreckt.Corrugated fin according to claim 1 or 2, characterized in that the stiffening bead (6) is shaped like a roof and extends approximately over the entire width (3) of the corrugated fin section between adjacent flat tubes (2). Wellrippe nach einem der Ansprüche 1 bis 3 mit entgegengesetzten Kiemenwinkeln , wobei die Kiemen (5) in der ersten Hälfte der Rippentiefe einen Kiemenwinkel α und die Kiemen in der zweiten Hälfte einen Kiemenwinkel β = 180° -α
Figure imgb0001
 aufweisen und im mittleren Bereich der Wellrippe (1) ein kiemenfreier Bereich vorgesehen ist, dadurch gekennzeichnet, daß die Versteifungssicke (6) im kiemenfreien Bereich angeordnet, im Querschnitt winklig ausgebildet ist und einen Winkel τ ≈ 180° -2 α
Figure imgb0002
 einschließt.Corrugated fin according to one of claims 1 to 3 with opposite gill angles, the gills (5) in the first half of the rib depth a gill angle α and the gills in the second half a gill angle β = 180 ° -α
Figure imgb0001
 and a gill-free area is provided in the central area of the corrugated fin (1) , characterized in that that the stiffening bead (6) is arranged in the gill-free area, is angular in cross section and an angle τ ≈ 180 ° -2 α
Figure imgb0002
 includes. Wellrippe nach Anspruch 4, dadurch gekennzeichnet, daß die Höhe (h) der Versteifungssicke (6) etwa der Blechstärke (s) der Wellrippe (1) entspricht, wobei insbesondere gilt: s < h < 2,5 s.Corrugated fin according to claim 4, characterized in that the height (h) of the stiffening bead (6) corresponds approximately to the sheet thickness (s) of the corrugated fin (1), with the following particularly applicable: s <h <2.5 s.
EP92116971A 1991-12-19 1992-10-05 Corrugated rib for a flat tube heat-exchanger Revoked EP0547309B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142019A DE4142019A1 (en) 1991-12-19 1991-12-19 SHAFT RIB FOR FLAT TUBE HEAT EXCHANGER
DE4142019 1991-12-19

Publications (2)

Publication Number Publication Date
EP0547309A1 true EP0547309A1 (en) 1993-06-23
EP0547309B1 EP0547309B1 (en) 1996-05-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116971A Revoked EP0547309B1 (en) 1991-12-19 1992-10-05 Corrugated rib for a flat tube heat-exchanger

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US (1) US5361829A (en)
EP (1) EP0547309B1 (en)
DE (2) DE4142019A1 (en)

Cited By (5)

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WO1998050746A1 (en) * 1997-05-07 1998-11-12 Valeo Klimatechnik Gmbh & Co. Kg Zigzag blade as ribbing for motor vehicle flat tube heat exchangers
EP0898138A3 (en) * 1997-08-22 2000-05-10 General Motors Corporation Compression tolerant louvered heat exchanger fin
EP1028303A1 (en) 1999-02-13 2000-08-16 Nederlandse Radiateuren Fabriek B.V. Fin for heat exchanger
DE102004060795A1 (en) * 2004-12-17 2006-06-29 Modine Manufacturing Co., Racine Heat exchanger rib and heat exchanger
DE202009014599U1 (en) 2009-10-29 2010-02-18 Behr Gmbh & Co. Kg Heat exchanger

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CA2180050A1 (en) * 1996-04-04 1997-10-05 Matthew K. Harris Indented fins for an automotive heat exchanger
US6729388B2 (en) * 2000-01-28 2004-05-04 Behr Gmbh & Co. Charge air cooler, especially for motor vehicles
US20040173344A1 (en) * 2001-05-18 2004-09-09 David Averous Louvered fins for heat exchanger
US6702190B1 (en) 2001-07-02 2004-03-09 Arvin Technologies, Inc. Heat transfer system for a vehicle
DE10235038A1 (en) * 2002-07-31 2004-02-12 Behr Gmbh & Co. Flat-tube heat exchanger
US20050045314A1 (en) * 2004-08-26 2005-03-03 Valeo, Inc. Aluminum heat exchanger and method of making thereof
DE10343905A1 (en) * 2003-09-19 2005-06-09 Behr Gmbh & Co. Kg Soldered heat transfer network
DE102004001306A1 (en) * 2004-01-07 2005-08-04 Behr Gmbh & Co. Kg Heat exchanger
DE102004012427A1 (en) * 2004-03-13 2005-09-29 Modine Manufacturing Co., Racine Heat exchanger network and corrugated fin
FR2868521B1 (en) * 2004-03-30 2009-03-13 Valeo Thermique Moteur Sas HEAT EXCHANGER FINS HAVING CUT-OFF BLADES FORMING FLOW DEFLECTOR
US20070039723A1 (en) * 2005-08-18 2007-02-22 Alex Latcau Header extension to retain core cover and maintain constant compression on outer fins
US20070246202A1 (en) * 2006-04-25 2007-10-25 Yu Wen F Louvered fin for heat exchanger
EP2106520B1 (en) 2007-01-12 2014-11-19 Vista-Pro Automotive, LLC Heat exchanger fin
US7866042B2 (en) * 2007-01-12 2011-01-11 Centrum Equities Acquisition, Llc Method for producing a split louver heat exchanger fin
US8408283B2 (en) * 2007-06-28 2013-04-02 Centrum Equities Acquisition, Llc Heat exchanger fin with ribbed hem
FR2923002B1 (en) * 2007-10-31 2015-12-11 Valeo Systemes Thermiques TUBE FOR THERMAL EXCHANGER
EP3015297B2 (en) * 2014-10-29 2022-09-14 Carl Freudenberg KG Assembly with a filter element
ES2736526T3 (en) * 2016-08-09 2020-01-02 Linde Ag Procedure for determining a resistance of a tubular beam heat exchanger and manufacturing procedure
JP2018132247A (en) * 2017-02-15 2018-08-23 富士電機株式会社 vending machine

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998050746A1 (en) * 1997-05-07 1998-11-12 Valeo Klimatechnik Gmbh & Co. Kg Zigzag blade as ribbing for motor vehicle flat tube heat exchangers
EP0898138A3 (en) * 1997-08-22 2000-05-10 General Motors Corporation Compression tolerant louvered heat exchanger fin
EP1028303A1 (en) 1999-02-13 2000-08-16 Nederlandse Radiateuren Fabriek B.V. Fin for heat exchanger
DE102004060795A1 (en) * 2004-12-17 2006-06-29 Modine Manufacturing Co., Racine Heat exchanger rib and heat exchanger
DE202009014599U1 (en) 2009-10-29 2010-02-18 Behr Gmbh & Co. Kg Heat exchanger

Also Published As

Publication number Publication date
DE4142019A1 (en) 1993-06-24
US5361829A (en) 1994-11-08
DE59206417D1 (en) 1996-07-04
EP0547309B1 (en) 1996-05-29

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