EP1923650A1 - Flat pipe, especially for a heat exchanger - Google Patents
Flat pipe, especially for a heat exchanger Download PDFInfo
- Publication number
- EP1923650A1 EP1923650A1 EP07022257A EP07022257A EP1923650A1 EP 1923650 A1 EP1923650 A1 EP 1923650A1 EP 07022257 A EP07022257 A EP 07022257A EP 07022257 A EP07022257 A EP 07022257A EP 1923650 A1 EP1923650 A1 EP 1923650A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flat tube
- metal strip
- chambers
- tube according
- sheet metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
- F28D1/0391—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits a single plate being bent to form one or more conduits
Definitions
- the invention relates to a flat tube, in particular for a heat exchanger, according to the preamble of claim 1.
- heat exchangers From the construction of heat exchangers, it is known to use, in particular made of aluminum flat tubes with multiple chambers, which can be produced in various ways. Are known extrusion methods and methods in which a metal strip or sheet metal strip is folded into a flat tube.
- US 4,633,056 A describes a flat tube for a heat exchanger in which a z-shaped fold of a sheet metal strip forms a partition between two adjacent separate chambers of the exchanger tube.
- the ends of the z-shaped folded sheet metal strip are turned over and abut to the enclosure of the chambers again in the region of the z-shaped fold. In this abutment area, the end areas are soldered or welded by electron beam. This means a considerable effort in the production of flat tubes.
- the plating is arranged only on one of two opposite sides of the sheet metal strip.
- the plating is arranged on a strip-shaped partial area in the longitudinal direction, at least on one side of the sheet-metal strip.
- a width of the partial area is not substantially more than approximately half of a width of the sheet-metal strip.
- an inner surface of the chambers has substantially no solder plating.
- solder plating can cause contamination of the fluid or have unfavorable properties on the corrosion resistance of the flat tube. This is especially true for very thin flat tube walls, as they are used for the purpose of saving material and weight especially in heat exchangers for motor vehicles.
- an outer surface of the flat tube is largely plated with the solder material.
- the outer surface can thus be soldered in a simple manner with ribbed plates or similar elements or in its end regions with a bottom plate of the heat exchanger.
- the sheet metal strip has a coating with a corrosion-inhibiting material that is different from the solder material.
- a corrosion-inhibiting material may, for. B. be a coating based on zinc.
- such a corrosion-inhibiting coating can also be applied to the solder plating, which however often means a reduction in the effectiveness of the protective coating. Therefore, the protective coating is particularly advantageously applied in areas in which there is no solder plating, in particular in the region of the inner surfaces of the chambers of the flat tube.
- a width of the flat tube is determined essentially by the z-shaped fold and between about 0.5 mm and about 10 mm, particularly preferably between about 0.8 mm and about 4 mm, is.
- the thickness of the sheet metal strip is preferably between about 0.1 mm and about 2 mm, and more preferably between about 0.15 mm and about 0.6 mm.
- a depth of the flat tube in the depth direction is advantageously between about 6 mm and about 100 mm, more preferably between about 10 mm and about 50 mm.
- a diameter of one of the chambers in the depth direction is advantageously between about 3 mm and about 50 mm, and more preferably between about 5 mm and about 25 mm.
- Such dimensions are common in particular in the construction of heat exchangers of motor vehicles.
- the flat tube has an even number of chambers.
- the number of chambers is exactly two. In an alternative embodiment, the number of chambers is exactly four.
- Fig. 1 shows a first embodiment of a flat tube according to the invention, which is made of a sheet metal strip 1 based on an aluminum alloy.
- the sheet metal strip 1 has a substantially rectangular cross section. A longitudinal direction of the sheet metal strip or of the flat tube runs perpendicular to the plane of the drawing according to FIG. 1.
- the metal strip 1 is completely coated on each of its opposite sides with a Lotplatttechnik 2, 3.
- a z-shaped fold 4 is first made in the middle region of the sheet metal strip 1.
- the height of the fold 4 essentially determines the width of the finished flat tube.
- left-side and right-side end portions 5, 6 of the sheet metal strip 1 are folded by 90 °, wherein the lengths of the end portions 5, 6 are not greater than the height of the z-shaped fold 4.
- the areas of the metal strip left and right of the fold 4 to Training two closed chambers 7, 8 of the flat tube turned over by 180 °.
- the angled end portions 5, 6 with their outer surfaces touch the partition wall 4 on its opposite sides.
- the prefolded flat tube (see lower illustration in FIG. 1) is subsequently brought into a soldering furnace, wherein by melting the solder plating, the end regions 5, 6 are each firmly soldered to the dividing wall 4. As a result, the chambers 7, 8 sealed tight and pressure-resistant.
- the height of the bent end region 5, 6 is in each case approximately smaller than the height of the dividing wall 4.
- the width of the flat tube is not determined by the end regions, which is advantageous in the light of the dimensional tolerances of the width of the metal strip.
- the inner surfaces of the chambers are coated with solder plating.
- solder plating this can lead to disadvantages and, in addition to higher costs, may also result in reduced corrosion resistance.
- the application of an additional corrosion protection layer on an existing Lotplatt ist is often insufficient. In the interests of optimum corrosion protection, critical areas of the sheet should therefore be assignable directly to the protective layer.
- the inner surfaces of the chambers 7, 8 are not provided with solder plating, but solder plating is present only in the narrow range of connection of the end portions 5, 6 with the partition wall 4.
- solder plating 2 is applied only on one side of the sheet metal strip 1.
- the solder plating 2 extends only from one lateral end to slightly above the middle of the sheet metal strip 1 (see upper illustration in FIG. 2).
- the z-shaped fold 4 is still provided with solder plating on one side and also has one of the two ends 6 on one side Lotplatt ist.
- the other bent end 5 of the sheet-metal strip 1 has no Lotplatt réelle and is soldered in the finished bent state with the one-sided Lotplatt réelle the fold 4.
- a flat tube with two chambers 7, 8 are folded, in which the inside of the chambers 7, 8 is no Lotplatt réelle present and outside a Lotplatt réelle only on a chamber 8 is present.
- a corrosion protection layer is not shown explicitly in any of the embodiments shown. It may be particularly expedient depending on the requirements of the places where the sheet metal strip 1 is not occupied by Lotplatttechnik.
- solder plating can be applied on both opposite sides of the metal strip 1 as in the embodiment of FIG respective Lotplatt réelle on one side only to about the middle of the sheet metal strip 1 extends.
- the metal strip is plated with solder only at one side at each point, the opposite side not being plated with solder at this point (see top illustration in FIG. 3).
- a flat tube is provided which has solder plating on its entire outer surface and wherein the entire inner surface of the chambers 7, 8 is free of solder plating.
- FIG. 4 A preferred embodiment of the embodiment of FIG. 3 is shown in Fig. 4.
- the connection of the end portions 5, 6 to avoid the partition 4 is provided in the central region of the sheet metal strip 1 on either side of a Lotplatt ist.
- solder plating area 1 a of the metal strip 1 corresponds in its width as the Z-shaped fold 4 (see middle view in Fig. 4).
- the solder plating which serves to solder the end regions 5, 6 to the central fold region 4 is present in each case on the end regions 5, 6.
- a "double" solder plating in the contact area as in the embodiment of FIG. 3 is thus avoided.
- Fig. 5 shows a schematic sectional view of a heat exchanger with flat tubes according to one of the embodiments described above.
- the flat tubes each have two in the depth direction of the heat exchanger arranged one behind the other chambers 7, 8 and between two adjacent flat tubes respectively rib members 9 are provided.
- the rib element 9 serves to increase the contact surface with the fluid flowing past in the depth direction on the flat tubes, which absorbs heat from the fluid guided in the flat tubes or emits into this.
- the rib elements 9 are suitably soldered to the surface of the flat tubes 7.
- the solder plating provided on the outer surfaces of the flat tubes is used in a preferred manner.
- Fig. 6 shows an embodiment of a flat tube according to the invention, in which four separate chambers are arranged in the depth direction one behind the other.
- the sheet metal strip 1 which is shown in the illustration of FIG. 6 without Lotplatt ist, provided with a total of three Z-shaped folds 4a, 4b, 4c, which alternate in their folding direction.
- the lateral end portions 5, 6 of the sheet metal strip 1 are angled and on each side of a sufficiently long projection of the sheet metal strip is folded. In each case, the end regions 5, 6 abut the outer folds 4a, 4c and are soldered to them.
- two chambers 7a, 8a of the four chambers of the flat tube have a double wall.
- the entire metal strip 1 may have a corresponding Lotplatt réelle or even a selectively provided only in the areas in question Lotplatt réelle.
- FIG. 7 shows a schematic representation of a heat exchanger with the four-chamber flat tubes according to FIG. 6.
- flat tubes according to the invention preferably have one even number of chambers, whereby the folding of the metal strip is simplified, and in particular can be dispensed with bead-like folds for the production of partitions.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Die Erfindung betrifft ein Flachrohr, insbesondere für einen Wärmetauscher, nach dem Oberbegriff des Anspruchs 1.The invention relates to a flat tube, in particular for a heat exchanger, according to the preamble of
Aus dem Bau von Wärmetauschern ist es bekannt, insbesondere aus Aluminium bestehende Flachrohre mit mehreren Kammern zu verwenden, die auf verschiedene Weise herstellbar sind. Bekannt sind Extrusionsverfahren und Verfahren, bei denen ein Blechstreifen oder Blechband zu einem Flachrohr gefaltet wird.From the construction of heat exchangers, it is known to use, in particular made of aluminum flat tubes with multiple chambers, which can be produced in various ways. Are known extrusion methods and methods in which a metal strip or sheet metal strip is folded into a flat tube.
Es ist die Aufgabe der Erfindung, ein Flachrohr für einen Wärmetauscher anzugeben, das mechanisch stabil ist und zugleich einfach und kostengünstig herstellbar.It is the object of the invention to provide a flat tube for a heat exchanger, which is mechanically stable and at the same time simple and inexpensive to produce.
Diese Aufgabe wird für ein eingangs genanntes Flachrohr erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Durch die Plattierung des Blechstreifens mit einem Lotmaterial ist die Verlötung der anstoßenden Enden zu den geschlossenen Kammern des Flachrohres erheblich vereinfacht. Der Blechstreifen muss lediglich zum Flachrohr gebogen werden und kann dann als ganzes, ggf. sogar vormontiert zu einem Wärmetauscher, in einem Lötofen verlötet werden, da die Lötplattierung sich bereits auf dem Wandungsmaterial des Flachrohrs befindet.This object is achieved according to the invention for an initially mentioned flat tube with the characterizing features of
In einer besonders bevorzugten Ausführungsform ist die Plattierung nur auf einer von zwei gegenüberliegenden Seiten des Blechstreifens angeordnet. Alternativ oder ergänzend ist die Plattierung auf einem in der Längsrichtung streifenförmigen Teilbereich zumindest auf einer Seite des Blechstreifens angeordnet. Insgesamt kann hierdurch je nach Anforderungen sichergestellt werden, dass zum einen nur wenig Lotplattierung verwendet wird und zum anderen die Innenwände der Kammern weitgehend von Lotplattierung freigehalten werden. Besonders bevorzugt beträgt dabei eine Breite des Teilbereichs nicht wesentlich mehr als etwa die Hälfte einer Breite des Blechstreifens. Hierdurch kann ein Flachrohr mit zwei Kammern vorgesehen werden, bei dem die Innenwände der Kammern weitgehend lotfrei sind und eine Lotplattierung nur auf etwas mehr als der Hälfte einer einzigen Seite des Blechstreifens vorliegt. Grundsätzlich ist es im Sinne der Erfindung auch möglich, nur kleine Teilbereiche mit Lot zu plattieren, die im Wesentlichen den späteren Lötstellen entsprechen. Ein solcher partieller Auftrag ist jedoch in der Herstellung aufwendig.In a particularly preferred embodiment, the plating is arranged only on one of two opposite sides of the sheet metal strip. Alternatively or additionally, the plating is arranged on a strip-shaped partial area in the longitudinal direction, at least on one side of the sheet-metal strip. Overall, this can be ensured depending on the requirements that on the one hand only little solder plating is used and on the other hand, the inner walls of the chambers are largely kept free of Lotplattierung. Particularly preferably, a width of the partial area is not substantially more than approximately half of a width of the sheet-metal strip. In this way, a flat tube with two chambers can be provided, in which the inner walls of the chambers are largely free of solder and a Lotplattierung is present only on slightly more than half of a single side of the metal strip. In principle, it is also possible within the meaning of the invention to plate only small partial areas with solder, which substantially correspond to the later solder joints. However, such a partial order is expensive to manufacture.
Allgemein bevorzugt weist eine innere Oberfläche der Kammern weitgehend keine Lotplattierung auf. Eine solche Lotplattierung kann je nach in den Rohren geführtem Fluid eine Kontamination des Fluids bewirken oder ungünstige Eigenschaften auf die Korrosionsfestigkeit des Flachrohrs haben. Dies gilt insbesondere bei sehr dünnen Flachrohrwänden, wie sie zum Zweck der Einsparung von Material und Gewicht insbesondere bei Wärmetauschern für Kraftfahrzeuge Verwendung finden.Generally, preferably, an inner surface of the chambers has substantially no solder plating. Depending on the fluid carried in the pipes, such solder plating can cause contamination of the fluid or have unfavorable properties on the corrosion resistance of the flat tube. This is especially true for very thin flat tube walls, as they are used for the purpose of saving material and weight especially in heat exchangers for motor vehicles.
Zudem ist es allgemein vorteilhaft vorgesehen, dass eine äußere Oberfläche des Flachrohrs weitgehend mit dem Lotmaterial plattiert ist. Die äußere Oberfläche kann somit auf einfache Weise mit Rippenblechen oder ähnlichen Elementen verlötet werden oder auch in seinen Endbereichen mit einem Bodenblech des Wärmetauschers.In addition, it is generally advantageously provided that an outer surface of the flat tube is largely plated with the solder material. The outer surface can thus be soldered in a simple manner with ribbed plates or similar elements or in its end regions with a bottom plate of the heat exchanger.
Zur Verbesserung der Lebensdauer des Flachrohres kann vorteilhaft vorgesehen sein, dass der Blechstreifen eine Beschichtung mit einem von dem Lotmaterial verschiedenen, korrosionshemmenden Material aufweist. Ein solches korrosionshemmendes Material kann z. B. eine Beschichtung auf Basis von Zink sein. Grundsätzlich kann eine solche korrosionshemmende Beschichtung auch auf der Lotplattierung aufgebracht sein, was jedoch häufig eine Verringerung der Wirksamkeit der Schutzbeschichtung bedeutet. Besonders vorteilhaft ist daher die Schutzbeschichtung in Bereichen aufgebracht, in denen keine Lotplattierung vorliegt, insbesondere im Bereich der inneren Oberflächen der Kammern des Flachrohrs.In order to improve the service life of the flat tube, it can be advantageously provided that the sheet metal strip has a coating with a corrosion-inhibiting material that is different from the solder material. Such a corrosion-inhibiting material may, for. B. be a coating based on zinc. In principle, such a corrosion-inhibiting coating can also be applied to the solder plating, which however often means a reduction in the effectiveness of the protective coating. Therefore, the protective coating is particularly advantageously applied in areas in which there is no solder plating, in particular in the region of the inner surfaces of the chambers of the flat tube.
Hinsichtlich der Bemaßungen eines bevorzugten Ausführungsbeispiels eines erfindungsgemäßen Flachrohrs ist vorgesehen, dass eine Breite des Flachrohrs im wesentlichen durch die z-förmige Faltung bestimmt ist und zwischen etwa 0,5 mm und etwa 10 mm, besonders bevorzugt zwischen etwa 0,8 mm und etwa 4 mm, beträgt. Die Dicke des Blechstreifens beträgt dabei bevorzugt zwischen etwa 0,1 mm und etwa 2 mm und besonders bevorzugt zwischen etwa 0,15 mm und etwa 0,6 mm. Eine Tiefe des Flachrohrs in der Tiefenrichtung beträgt vorteilhaft zwischen etwa 6 mm und etwa 100 mm, besonders bevorzugt zwischen etwa 10 mm und etwa 50 mm. Ein Durchmesser einer der Kammern in der Tiefenrichtung beträgt vorteilhaft zwischen etwa 3 mm und etwa 50 mm und besonders bevorzugt zwischen etwa 5 mm und etwa 25 mm. Solche Maße sind insbesondere im Bau von Wärmetauschern von Kraftfahrzeugen üblich.With regard to the dimensions of a preferred embodiment of a flat tube according to the invention, it is provided that a width of the flat tube is determined essentially by the z-shaped fold and between about 0.5 mm and about 10 mm, particularly preferably between about 0.8 mm and about 4 mm, is. The thickness of the sheet metal strip is preferably between about 0.1 mm and about 2 mm, and more preferably between about 0.15 mm and about 0.6 mm. A depth of the flat tube in the depth direction is advantageously between about 6 mm and about 100 mm, more preferably between about 10 mm and about 50 mm. A diameter of one of the chambers in the depth direction is advantageously between about 3 mm and about 50 mm, and more preferably between about 5 mm and about 25 mm. Such dimensions are common in particular in the construction of heat exchangers of motor vehicles.
Allgemein vorteilhaft ist es vorgesehen, dass das Flachrohr eine gerade Anzahl von Kammern aufweist. Bei einer solchen Ausbildung lässt sich eine besonders einfache und effektive Verfaltung des Blechstreifens unter Verwendung von z-förmigen Faltungen zur Bereitstellung von Trennwänden zwischen benachbarten Kammern realisieren. Bei einer ersten besonders bevorzugten Ausführungsform beträgt die Anzahl der Kammern dabei genau zwei. Bei einer alternativen Ausführungsform beträgt die Anzahl der Kammern genau vier.Generally, it is provided that the flat tube has an even number of chambers. In such a configuration, a particularly simple and effective Verfaltung the metal strip using z-shaped folds to provide partitions between realize adjacent chambers. In a first particularly preferred embodiment, the number of chambers is exactly two. In an alternative embodiment, the number of chambers is exactly four.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den nachfolgend beschriebenen Ausführungsbeispielen sowie aus den abhängigen Ansprüchen.Further features and advantages of the invention will become apparent from the embodiments described below and from the dependent claims.
Nachfolgend werden mehrere bevorzugte Ausführungsbeispiele eines erfindungsgemäßen Flachrohrs beschrieben und anhand der anliegenden Zeichnungen näher erläutert.
- Fig. 1
- zeigt eine schematische Darstellung eines ersten Ausführungsbeispiels eines erfindungsgemäßen Flachrohrs, wobei drei Schritte einer Herstellung gezeigt sind.
- Fig. 2
- zeigt ein zweites Ausführungsbeispiel eines erfindungsgemäßen Flachrohrs.
- Fig. 3
- zeigt ein drittes Ausführungsbeispiel eines erfindungsgemäßen Flachrohrs.
- Fig. 4
- zeigt eine Abwandlung des Flachrohrs aus Fig. 3.
- Fig. 5
- zeigt eine schematische Schnittdarstellung eines Wärmetauschers mit erfindungsgemäßen Flachrohren.
- Fig. 6
- zeigt ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Flachrohrs mit vier Kammern.
- Fig. 7
- zeigt eine schematische Schnittansicht eines Wärmetauschers mit Flachrohren gemäß dem Ausführungsbeispiel aus Fig. 6.
- Fig. 1
- shows a schematic representation of a first embodiment of a flat tube according to the invention, wherein three steps of a production are shown.
- Fig. 2
- shows a second embodiment of a flat tube according to the invention.
- Fig. 3
- shows a third embodiment of a flat tube according to the invention.
- Fig. 4
- shows a modification of the flat tube of Fig. 3rd
- Fig. 5
- shows a schematic sectional view of a heat exchanger with flat tubes according to the invention.
- Fig. 6
- shows a further embodiment of a flat tube according to the invention with four chambers.
- Fig. 7
- shows a schematic sectional view of a heat exchanger with flat tubes according to the embodiment of FIG. 6.
Fig. 1 zeigt ein erstes Ausführungsbeispiel eines erfindungsgemäßen Flachrohrs, das aus einem Blechstreifen 1 auf Basis einer Aluminiumlegierung hergestellt ist. Der Blechstreifen 1 hat einen im Wesentlichen rechteckigen Querschnitt. Eine Längsrichtung des Blechstreifens bzw. des Flachrohrs verläuft senkrecht zur Zeichnungsebene nach Fig. 1.Fig. 1 shows a first embodiment of a flat tube according to the invention, which is made of a
Der Blechstreifen 1 ist auf jeder seiner gegenüberliegenden Seiten vollständig mit einer Lotplattierung 2, 3 beschichtet. Zur Herstellung des Flachrohrs aus dem Blechstreifen 1 wird zunächst eine z-förmige Faltung 4 im mittleren Bereich des Blechstreifens 1 vorgenommen. Die Höhe der Faltung 4 bestimmt dabei im Wesentlichen die Breite des fertigen Flachrohrs. Nachfolgend werden linksseitige und rechtsseitige Endbereiche 5, 6 des Blechstreifens 1 um 90° gefaltet, wobei die Längen der Endbereiche 5, 6 nicht größer sind als die Höhe der z-förmigen Faltung 4. Die Bereiche des Blechstreifens links und rechts der Faltung 4 werden zur Ausbildung zweier geschlossener Kammern 7, 8 des Flachrohrs um 180° umgeschlagen. Dabei berühren die abgewinkelten Endbereiche 5, 6 mit ihren Außenflächen jeweils die Trennwand 4 an deren gegenüberliegenden Seiten. Das so vorgefaltete Flachrohr (siehe untere Darstellung in Fig. 1) wird nachfolgend in einen Lötofen verbracht, wobei durch Schmelzen der Lotplattierungen die Endbereiche 5, 6 jeweils mit der Trennwand 4 fest verlötet werden. Hierdurch werden die Kammern 7, 8 dicht und druckfest verschlossen.The
Die Höhe der umgebogenen Endbereich 5, 6 ist jeweils etwa kleiner als die Höhe der Trennwand 4. Hierdurch wird die Breite des Flachrohrs nicht durch die Endbereiche bestimmt, was im Licht der Maßtoleranzen der Breite des Blechstreifens vorteilhaft ist.The height of the
Bei der Ausführung nach Fig. 1 sind gemäß der beidseitig und vollständig vorliegenden Lotplattierung die Innenflächen der Kammern mit Lotplattierung beschichtet. Dies kann je nach Anwendungen Nachteile mit sich bringen und bedingt neben höheren Kosten ggf. eine verringerte Korrosionsresistenz. Erfahrungen haben gezeigt, dass übliche Lotplattierungen von Aluminium-Flachrohren trotz des Zink-Gehalts der Plattierungen einen Lochfraß oder auch eine Korrosion im Ansatzbereich eines Bodenteils nicht verhindern. Die Aufbringung einer zusätzlichen Korrosionsschutzschicht auf eine bestehende Lotplattierung ist dabei oft unzureichend. Im Interesse eines optimalen Korrosionsschutzes sollten daher kritische Bereiche des Blechs unmittelbar mit der Schutzschicht belegbar sein.In the embodiment according to FIG. 1, according to the double-sided and complete solder plating, the inner surfaces of the chambers are coated with solder plating. Depending on the application, this can lead to disadvantages and, in addition to higher costs, may also result in reduced corrosion resistance. Experience has shown that conventional solder cladding of flat aluminum tubes, despite the zinc content of the cladding not prevent pitting or corrosion in the neck region of a bottom part. The application of an additional corrosion protection layer on an existing Lotplattierung is often insufficient. In the interests of optimum corrosion protection, critical areas of the sheet should therefore be assignable directly to the protective layer.
Bei einer verbesserten Ausführungsform gemäß Fig. 2 sind daher die Innenflächen der Kammern 7, 8 nicht mit Lotplattierung versehen, sondern Lotplattierung liegt lediglich in dem eng begrenzten Bereich der Verbindung der Endbereiche 5, 6 mit der Trennwand 4 vor. Dies wird dadurch erreicht, dass die Lotplattierung 2 nur auf einer Seite des Blechstreifens 1 aufgebracht ist. Auf dieser einen Seite reicht die Lotplattierung 2 nur von einem seitlichen Ende bis etwas über die Mitte des Blechstreifens 1 (siehe obere Darstellung in Fig. 2). Hierdurch wird die z-förmige Faltung 4 auf einer Seite noch mit Lotplattierung versehen und zudem hat eines der beiden Enden 6 auf einer Seite Lotplattierung. Das andere umgebogene Ende 5 des Blechstreifens 1 weist keinerlei Lotplattierung auf und wird im fertig gebogenen Zustand mit der einseitigen Lotplattierung der Faltung 4 verlötet. Insgesamt kann somit ein Flachrohr mit zwei Kammern 7, 8 gefaltet werden, bei dem innenseitig der Kammern 7, 8 keine Lotplattierung vorliegt und außenseitig eine Lotplattierung nur auf einer Kammer 8 vorliegt.In an improved embodiment according to FIG. 2, therefore, the inner surfaces of the
Eine Korrosionsschutzschicht ist in keinem der gezeigten Ausführungsbeispiele explizit dargestellt. Besonders zweckmäßig kann sie je nach Anforderungen an den Stellen vorgesehen werden, an denen der Blechstreifen 1 nicht mit Lotplattierung belegt ist.A corrosion protection layer is not shown explicitly in any of the embodiments shown. It may be particularly expedient depending on the requirements of the places where the
Falls es gewünscht ist, dass Lotplattierung auf der gesamten Außenfläche des Flachrohrs vorliegt, beispielsweise zur besseren Verbindung mit Rippenblechen oder anderen Bauteilen des Wärmetauschers, so kann die Lotplattierung wie im Ausführungsbeispiel gemäß Fig. 3 auf beiden gegenüberliegenden Seiten des Blechstreifens 1 aufgebracht werden, wobei die jeweilige Lotplattierung auf einer Seite nur bis etwa zur Mitte des Blechstreifens 1 reicht. Hierdurch ist der Blechstreifen an jeder Stelle nur auf einer Seite mit Lot plattiert, wobei an dieser Stelle die gegenüberliegende Seite nicht mit Lot plattiert ist (siehe obere Darstellung in Fig. 3). Gemäß der in Fig. 3 dargestellten und zuvor beschriebenen Verfaltung des Blechstreifens wird ein Flachrohr bereitgestellt, das auf seiner gesamten Außenfläche Lotplattierung aufweist und wobei die gesamte Innenfläche der Kammern 7, 8 frei von Lotplattierung ist. Eine bevorzugte Weiterbildung des Ausführungsbeispiels aus Fig. 3 ist in Fig. 4 dargestellt. Um einen Überschuss an Lotplattierung im Bereich der Anbindung der Endbereiche 5, 6 an die Trennwand 4 zu vermeiden wird im mittleren Bereich des Blechstreifens 1 auf keiner der beiden Seiten eine Lotplattierung vorgesehen. Dieser beidseitig nicht mit Lotplattierung belegte Bereich 1 a des Blechstreifens 1 entspricht in seiner Breite etwa der z-förmigen Faltung 4 (siehe mittlere Darstellung in Fig. 4). Die Lotplattierung die einem Verlöten der Endbereiche 5, 6 mit dem zentralen Faltungsbereich 4 dient, liegt jeweils auf den Endbereichen 5, 6 vor. Eine "doppelte" Lotplattierung im Anlagebereich wie im Ausführungsbeispiel gemäß Fig. 3 ist somit vermieden.If it is desired that solder plating be present on the entire outer surface of the flat tube, for example for better connection with fin plates or other components of the heat exchanger, the solder plating can be applied on both opposite sides of the
Fig. 5 zeigt eine schematische Schnittansicht eines Wärmetauschers mit Flachrohren nach einem der zuvor beschriebenen Ausführungsbeispiele. Die Flachrohre haben jeweils zwei in Tiefenrichtung des Wärmetauschers hintereinander angeordnete Kammern 7, 8 und zwischen zwei benachbarten Flachrohren sind jeweils Rippenelemente 9 vorgesehen. Das Rippenelement 9 dient einer Vergrößerung der Kontaktfläche mit dem in Tiefenrichtung an den Flachrohren vorbeiströmenden Fluid, das Wärme von dem in den Flachrohren geführten Fluid aufnimmt oder in dieses abgibt. Zur Verbesserung der Wärmeleitung zwischen den Flachrohren 7 und den Rippenelementen 9 sind die Rippenelemente 9 zweckmäßig mit der Oberfläche der Flachrohre 7 verlötet. Hierzu dient auf bevorzugter Weise die an den Außenflächen der Flachrohre vorgesehene Lotplattierung.Fig. 5 shows a schematic sectional view of a heat exchanger with flat tubes according to one of the embodiments described above. The flat tubes each have two in the depth direction of the heat exchanger arranged one behind the
Fig. 6 zeigt ein Ausführungsbeispiel eines erfindungsgemäßen Flachrohrs, bei dem vier separate Kammern in Tiefenrichtung hintereinander angeordnet sind. Hierzu wird der Blechstreifen 1, der in der Darstellung nach Fig. 6 ohne Lotplattierung gezeigt ist, mit insgesamt drei z-förmigen Faltungen 4a, 4b, 4c versehen, die in ihrer Faltungsrichtung alternieren. Wie in den zuvor beschriebenen Beispielen werden die seitlichen Endbereiche 5, 6 des Blechstreifens 1 abgewinkelt und auf jeder Seite wird ein ausreichend langer Überstand des Blechstreifens umgelegt. Die Endbereiche 5, 6 stoßen dabei jeweils an die äußeren der Faltungen 4a, 4c an und werden mit diesen verlötet. Konstruktiv bedingt haben zwei Kammern 7a, 8a der insgesamt vier Kammern des Flachrohrs eine doppelte Wandung. Um Druckfestigkeit und die Abdichtung der Kammern untereinander zu gewährleisten, sind diese Wandungen im Bereich ihrer gegenseitigen Anlage zweckmäßig miteinander verlötet. Hierzu kann der gesamte Blechstreifen 1 eine entsprechende Lotplattierung aufweisen oder auch eine nur selektiv in den betreffenden Bereichen vorgesehene Lotplattierung.Fig. 6 shows an embodiment of a flat tube according to the invention, in which four separate chambers are arranged in the depth direction one behind the other. For this purpose, the
Fig. 7 zeigt eine schematische Darstellung eines Wärmetauschers mit den Vierkammer-Flachrohren gemäß Fig. 6. Wie ein Vergleich der konstruktiven Schemata der Zweikammer-Flachrohre (Fig. 1) und der Vierkammer-Flachrohre nach Fig. 6 zeigt, haben erfindungsgemäße Flachrohre bevorzugt eine gerade Anzahl von Kammern, wodurch die Faltung des Blechstreifens vereinfacht ist und insbesondere auf sickenartige Faltungen zur Herstellung von Trennwänden verzichtet werden kann.FIG. 7 shows a schematic representation of a heat exchanger with the four-chamber flat tubes according to FIG. 6. As a comparison of the constructive diagrams of the two-chamber flat tubes (FIG. 1) and the four-chamber flat tubes according to FIG. 6 shows, flat tubes according to the invention preferably have one even number of chambers, whereby the folding of the metal strip is simplified, and in particular can be dispensed with bead-like folds for the production of partitions.
Claims (14)
einen sich in einer Längsrichtung des Flachrohrs erstreckenden Blechstreifen (1), wobei das Flachrohr durch Biegungen des Blechstreifens (1) um die Längsrichtung ausgeformt ist,
wobei das Flachrohr zumindest zwei in einer Tiefenrichtung hintereinander angeordnete Kammern (7, 8) aufweist,
wobei zwischen den Kammern (7, 8) zumindest eine durch im Wesentlichen z-förmige Biegung des Blechstreifens ausgebildete Trennwand (4) vorgesehen ist, und
wobei ein Endbereich (5, 6) des Blechstreifens (1) an die Trennwand (4) angrenzt,
dadurch gekennzeichnet,
dass der Blechstreifen (1) zumindest teilweise eine Plattierung (2, 3) aus einem Lotmaterial aufweist.Flat tube, in particular for a heat exchanger, comprising
a sheet-metal strip (1) extending in a longitudinal direction of the flat tube, wherein the flat tube is formed by bending the sheet-metal strip (1) about the longitudinal direction,
wherein the flat tube has at least two chambers (7, 8) arranged one behind the other in a depth direction,
wherein between the chambers (7, 8) at least one formed by substantially z-shaped bending of the sheet metal strip partition (4) is provided, and
wherein an end region (5, 6) of the sheet-metal strip (1) adjoins the dividing wall (4),
characterized,
that the sheet metal strip (1) has at least partly a cladding (2, 3) of a solder material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610054036 DE102006054036A1 (en) | 2006-11-16 | 2006-11-16 | Flat tube, in particular for a heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1923650A1 true EP1923650A1 (en) | 2008-05-21 |
| EP1923650B1 EP1923650B1 (en) | 2013-03-13 |
Family
ID=39103034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20070022257 Not-in-force EP1923650B1 (en) | 2006-11-16 | 2007-11-16 | Flat pipe, especially for a heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1923650B1 (en) |
| DE (1) | DE102006054036A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525980A (en) * | 2014-09-30 | 2016-04-27 | 泰安鼎鑫冷却器有限公司 | Corrosion-resistant high-strength radiating pipe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009041618A1 (en) * | 2009-09-17 | 2011-03-24 | Behr Gmbh & Co. Kg | Flat tube for a heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633056A (en) | 1983-06-14 | 1986-12-30 | Mtu Muenchen Gmbh | Method for manufacturing special-section tubes for tubular heat exchangers and tubes provided by such method |
| DE19548495A1 (en) * | 1995-12-22 | 1997-06-26 | Valeo Klimatech Gmbh & Co Kg | Heat exchanger block and method of its manufacture |
| FR2770634A1 (en) * | 1997-11-06 | 1999-05-07 | Valeo Thermique Moteur Sa | Twin-channel folded metal tube for heat exchanger |
| JPH11351777A (en) * | 1998-06-12 | 1999-12-24 | Calsonic Corp | Flat heat transfer tube for heat exchanger |
| DE10053653A1 (en) * | 2000-10-28 | 2002-05-08 | Modine Mfg Co | Flat tube for heat exchanger has sheet strip coated on both sides with solder |
| FR2832788A1 (en) * | 2001-11-26 | 2003-05-30 | Valeo Climatisation | Profile for tubes in heat exchangers used in motor vehicles, uses folded metal sheet to form tube and bends one edge over so that it rests on other wall of tube, providing strength to the tube during manufacture |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3327660A1 (en) * | 1983-06-20 | 1984-12-20 | Motoren Turbinen Union | Method for the production of small shaped tubes for tubular heat exchangers |
| DE19548244B4 (en) * | 1995-12-22 | 2006-03-02 | Behr Gmbh & Co. Kg | Process for producing brazed aluminum heat exchangers |
| FR2749648B1 (en) * | 1996-06-05 | 1998-09-04 | Valeo Thermique Moteur Sa | FLAT TUBE WITH MEDIUM SPACER FOR HEAT EXCHANGER |
-
2006
- 2006-11-16 DE DE200610054036 patent/DE102006054036A1/en not_active Withdrawn
-
2007
- 2007-11-16 EP EP20070022257 patent/EP1923650B1/en not_active Not-in-force
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633056A (en) | 1983-06-14 | 1986-12-30 | Mtu Muenchen Gmbh | Method for manufacturing special-section tubes for tubular heat exchangers and tubes provided by such method |
| DE19548495A1 (en) * | 1995-12-22 | 1997-06-26 | Valeo Klimatech Gmbh & Co Kg | Heat exchanger block and method of its manufacture |
| FR2770634A1 (en) * | 1997-11-06 | 1999-05-07 | Valeo Thermique Moteur Sa | Twin-channel folded metal tube for heat exchanger |
| JPH11351777A (en) * | 1998-06-12 | 1999-12-24 | Calsonic Corp | Flat heat transfer tube for heat exchanger |
| DE10053653A1 (en) * | 2000-10-28 | 2002-05-08 | Modine Mfg Co | Flat tube for heat exchanger has sheet strip coated on both sides with solder |
| FR2832788A1 (en) * | 2001-11-26 | 2003-05-30 | Valeo Climatisation | Profile for tubes in heat exchangers used in motor vehicles, uses folded metal sheet to form tube and bends one edge over so that it rests on other wall of tube, providing strength to the tube during manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525980A (en) * | 2014-09-30 | 2016-04-27 | 泰安鼎鑫冷却器有限公司 | Corrosion-resistant high-strength radiating pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1923650B1 (en) | 2013-03-13 |
| DE102006054036A1 (en) | 2008-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102014005149B4 (en) | Brazed heat exchanger | |
| DE19814050C2 (en) | Layered heat exchanger | |
| DE102006048305A1 (en) | Plate heat exchanger has trough-shaped heat-exchanger plates stacked into each other with their outer edges next to each other and flow channels for cooling liquid between the heat-exchanger plates | |
| DE102008007597A1 (en) | Multi-chamber flat pipe manufacturing method for heat exchanger e.g. exhaust gas heat exchanger, involves attaching bar to edge area of strip through shaping, and forming strip for forming flat pipe, such that profile is closed | |
| DE3440489A1 (en) | COOLER, ESPECIALLY FOR THE COOLING SYSTEM OF A COMBUSTION ENGINE OF A MOTOR VEHICLE | |
| DE3813339A1 (en) | Tubular heat exchanger and method for its production | |
| EP1725824A1 (en) | Stacked-plate heat exchanger | |
| DE102004057407A1 (en) | Flat tube for heat exchanger, especially condenser, has insert with central, essentially flat steel band from which structural elements are cut, turned out of band plane by angle with axis of rotation essentially arranged in flow direction | |
| DE4026988A1 (en) | Heat exchanger in vehicle - comprises assembly of flat pipes and corrugated rib units | |
| DE3834822A1 (en) | Heat exchanger | |
| EP1640684A1 (en) | heat exchanger with flat tubes and corrugated fins | |
| DE102015209130A1 (en) | Heat exchanger | |
| DE29614186U1 (en) | Heat exchanger, in particular tumble dryer condenser, and pipe arrangement intended for its manufacture | |
| EP1923650B1 (en) | Flat pipe, especially for a heat exchanger | |
| DE102009041406B3 (en) | Heat exchanger for use as evaporator in energy recovery plant of motor vehicle, has smaller flat tube arranged in larger flat tube, where broad sides of walls of larger flat tube lie against each other, when tubes are coaxially arranged | |
| DE6602685U (en) | HEAT EXCHANGERS, IN PARTICULAR COOLERS FOR COMBUSTION VEHICLE ENGINES, WITH THE SAME SPACER PLATES ARRANGED BETWEEN THE COOLANT PIPES FOR THE SUPPLY OF THE COOLING AIR FLOW | |
| DE202014002477U1 (en) | heat exchangers | |
| DE102008007601A1 (en) | Multi-chamber flat pipe has two chambers for flow admission of fluid, where chambers are manufactured, particularly in bend or folding method, by forming broad strip | |
| DE9318525U1 (en) | Aluminum water / air heat exchanger for motor vehicles | |
| DE102014015170B3 (en) | Soldered heat exchanger and manufacturing process | |
| EP2167895B1 (en) | Heat exchanger | |
| DE102008007610A1 (en) | Multi-chamber flat tube for use in e.g. high temperature heat exchanger, to exchange heat between exhaust gas and coolant in motor vehicle, has bar with edge portions partially formed as part of side sections of metal strip | |
| DE102005002005B4 (en) | Cooling device, in particular for an electrical transformer | |
| DE19846346C1 (en) | Heat exchanger in layered structure has rectangular configuration in every second layer through extrusion of aluminum or aluminum alloy profile tubes | |
| DE102008007587A1 (en) | Multi-chamber automotive heat exchanger or radiator has flat tube inner chamber sub-divided by U-shaped cross-piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
| 17P | Request for examination filed |
Effective date: 20081121 |
|
| 17Q | First examination report despatched |
Effective date: 20081217 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 601045 Country of ref document: AT Kind code of ref document: T Effective date: 20130315 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502007011439 Country of ref document: DE Effective date: 20130502 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130613 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130624 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20130313 |
|
| REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130614 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130715 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130713 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| 26N | No opposition filed |
Effective date: 20131216 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502007011439 Country of ref document: DE Effective date: 20131216 |
|
| BERE | Be: lapsed |
Owner name: BEHR G.M.B.H. & CO. KG Effective date: 20131130 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20131116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131130 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131130 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131116 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 601045 Country of ref document: AT Kind code of ref document: T Effective date: 20131116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131116 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 502007011439 Country of ref document: DE Representative=s name: GRAUEL, ANDREAS, DIPL.-PHYS. DR. RER. NAT., DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502007011439 Country of ref document: DE Owner name: MAHLE INTERNATIONAL GMBH, DE Free format text: FORMER OWNER: BEHR GMBH & CO. KG, 70469 STUTTGART, DE Effective date: 20150319 Ref country code: DE Ref legal event code: R082 Ref document number: 502007011439 Country of ref document: DE Representative=s name: GRAUEL, ANDREAS, DIPL.-PHYS. DR. RER. NAT., DE Effective date: 20150319 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131116 Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20071116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130313 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 9 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20181203 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20181122 Year of fee payment: 12 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502007011439 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191130 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200603 |