EP2529851A1 - Roll-formed convector sheet - Google Patents
Roll-formed convector sheet Download PDFInfo
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- EP2529851A1 EP2529851A1 EP12170396A EP12170396A EP2529851A1 EP 2529851 A1 EP2529851 A1 EP 2529851A1 EP 12170396 A EP12170396 A EP 12170396A EP 12170396 A EP12170396 A EP 12170396A EP 2529851 A1 EP2529851 A1 EP 2529851A1
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- European Patent Office
- Prior art keywords
- wall
- cross
- convector
- long wall
- short
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
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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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
Definitions
- the invention relates to a convector, in particular for a radiator, which is made of a strip of aluminum or an aluminum alloy by the belt is continuously moved to a pair of rollers at a preferably constant feed rate and continuously by means of the roller pair in an at least partially meandering cross-sectional shape is transformed so that it is conceivable as a juxtaposition identical to a point of symmetry point-symmetrical cross-sectional parts, each cross-section part over a long, running through the symmetry point of the cross-sectional wall and two adjacent each end of the long wall has short walls, and at least partially so Meander-shaped band is separated in Konvektorbleche.
- the present invention relates to a method for producing a Konvektorblechs, in particular made of aluminum or aluminum alloy Konvektorblechs, wherein the Konvektorblech is conceivable as a juxtaposition identical to a point of symmetry point-symmetrical cross-sectional parts and each cross-sectional part a long, running through the symmetry point of the cross-sectional part wall and two adjacent each end of the long wall has short walls, the long wall having two kinks, which divide them into two short wall sections and a long wall section, wherein the kinks are arranged symmetrically with respect to the point of symmetry.
- Convector plates of the type described above are for example from the DE 20 2009 017 777 U1 ,
- the aforementioned document discloses a technique by means of which a strip of aluminum or an aluminum alloy can be continuously brought into a meandering cross-sectional shape by means of two intermeshing rolls.
- the convector sheets are after their forming production usually connected by resistance spot welding with a hot plate of a plate heater, which convection channels are formed between the convector and the heating plate, in which heated air can rise supported by the chimney effect and thereby increases the heat output of the radiator.
- cross-sectional geometries of Konvektorbleches are judged to be in need of improvement, since an optimum ratio of a circumference of each convection channel is not achieved to its surface. In the first place, there is the problem that the Konvektorbleche on a certain length too few individual convection channels and a desired high efficiency of energy transfer from the radiator on the convector plate on the air to be heated can not be achieved.
- the object of the present invention is to develop a Konvektorblech of the type described above to the effect that a better ratio between the circumference of the Konvektorblechs, that is its elongated length, and the surface of the resulting from the combination of Konvektorblechs with the radiator convection is achieved further to provide a method by which this convector sheet can be manufactured in a continuous process.
- the long wall has two kinks, which divide them into two short wall sections and a long wall section, wherein the kinks are arranged symmetrically with respect to the point of symmetry.
- the convector plate is made of aluminum or an aluminum alloy, measured in the feed direction of the aluminum strip length of the short joint between the radiator and the convector is sufficient to introduce sufficient heat into the convector plate, so that in the convection formed the desired effect of the rising air flow ( "Chimney effect") arises.
- the convector plate should be formed so that the first wall portion and the second wall portion of the divided by the kinks long wall an angle between 5 ° and 20 °, preferably between 10 ° and 15 °, more preferably an angle between 12.5 ° and 13.5 °, and also include the short walls with the respective adjacent short wall sections of the divided by the kinks long wall an angle between 50 ° and 70 °, preferably an angle of 60 °. Investigations have been able to show that these geometric configurations lead to a particularly good area ratio of the convector sheet with simultaneous feasibility of the forming process by means of the continuous forming process.
- the feed rate of the aluminum strip is constant, that is subject to any fluctuations.
- the production process is particularly easy to plan by such a uniformity in the forming and further processing machines and processes are much easier adjustable, so that a uniform and continuous production process is favored.
- a preferable nature of the Konvektorblechs provides that both the long wall and the short wall are substantially flat.
- a flat shape of the walls favors the possibility of storage, since the finished formed and cut to a certain length convector sheets can be stacked without unwanted frictional or even gearing effects occur due to any bumps in the large flat portions of the convector.
- Flat surfaces are also much easier to produce than other types of geometry as part of the continuous forming process.
- the manufacturing process can be adapted to the particular conditions of the underlying material in the form of the aluminum strip. This may be necessary in view of different sheet thicknesses of the tape.
- This in FIG. 1 embodiment shown comprises a single cross-sectional part 1 of a Konvektorblechs invention.
- This cross-sectional part 1 has two short walls 2 and a long wall 3, wherein the long wall 3 is divided into a total of three sections. These sections of the long wall 3 are two short wall sections 4 and a long wall section 5.
- the cross-sectional part 1 has a total of four irregular points on which an aluminum sheet, from which the cross-sectional part 1 is formed, each having a kink. As such, end points 6 between the short walls 2 and the short wall sections 4 of the long wall 3 should be mentioned as well as kinks 7, which delimit the short wall sections 4 from the long wall sections 5 of the long wall 3.
- An angle ⁇ between the short wall 2 and the short wall section 4 is in the in FIG. 1 example shown 60 °.
- an angle ⁇ between the short wall 2 and the long wall section 5 is approximately 73 °, so that an angle ⁇ of approximately 13 ° is enclosed between the short wall section 4 and the long wall section 5.
- the angles ⁇ , ⁇ , ⁇ also from the FIG. 1 becomes directly apparent, so the long wall section 5 runs considerably steeper compared to the short wall section 4, so that a total, measured in an indicated by an arrow 8 feed direction of an entire convector sheet length 9 of the cross-sectional part 1 relative to such an arrangement can be reduced in which the long wall section 5 has the same "flatter" inclination at the angle ⁇ as the short wall section 4.
- FIG. 2 An assembled from a plurality of cross-sectional parts 1 Konvektorblech 11 is in FIG. 2 displayed.
- a transition between two adjacent cross-sectional parts 1 is graphically illustrated by means of vertically oriented axes 12.
- an advantage of the short wall 2 becomes particularly clear, which has a relatively short length 13. This length 13 is sufficient for the Konvektorblech 11 to absorb enough heat energy from the heating plate of a connected, not shown radiator and consequently to heat completely.
- a longer short wall 2 is thus neither for the purpose of heat absorption, nor for reasons of a favorable area ratio of each convection channel 14 (in FIG. 2 hatched highlighted) necessary, so that by the provision of the terminals 6 and 7 kinks the convector sheet 11 can be performed particularly easy to save material.
- each convection channel 14 remains low and thus a comparatively high number of convection channels 14 can be arranged over a whole width of a heater or that for a given number of convection channels (due to a wave structure in the heating plate), the material consumption of the aluminum sheet is minimized or the cross-sectional area of the convection channels is maximized.
- FIG. 3 A snapshot of this method according to the invention is in FIG. 3 shown schematically.
- the respectively running on a circular path 18 teeth 16 both rollers forming the pair of rollers 17 are identical in shape.
- each individual cross-sectional part 1 of a convector sheet 11 according to the invention is point-symmetrical about a point of symmetry 10 which is arranged centrally in the long wall section 5 of the cross-sectional part 1.
- the feed direction of the aluminum sheet is again illustrated by means of the arrow 8.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Konvektorblech, insbesondere für einen Heizkörper, welches aus einem Band aus Aluminium oder einer Aluminiumlegierung hergestellt ist, indem das Band fortwährend mit einer vorzugsweise konstanten Vorschubgeschwindigkeit auf ein Walzenpaar zu bewegt wird und mittels des Walzenpaares kontinuierlich derart in eine zumindest teilweise mäanderförmige Querschnittsform umgeformt wird, dass es als eine Aneinanderreihung identischer zu einem Symmetriepunkt punktsymmetrischer Querschnittsteile auffassbar ist, wobei jedes Querschnittsteil über eine lange, durch den Symmetriepunkt des Querschnittsteils verlaufende Wandung sowie über zwei jeweils an Endstellen der langen Wandung angrenzende kurze Wandungen verfügt, und das zumindest teilweise derart mäanderförmig umgeformte Band in Konvektorbleche vereinzelt wird.The invention relates to a convector, in particular for a radiator, which is made of a strip of aluminum or an aluminum alloy by the belt is continuously moved to a pair of rollers at a preferably constant feed rate and continuously by means of the roller pair in an at least partially meandering cross-sectional shape is transformed so that it is conceivable as a juxtaposition identical to a point of symmetry point-symmetrical cross-sectional parts, each cross-section part over a long, running through the symmetry point of the cross-sectional wall and two adjacent each end of the long wall has short walls, and at least partially so Meander-shaped band is separated in Konvektorbleche.
Ferner betrifft die vorliegende Erfindung ein Verfahren zur Herstellung eines Konvektorblechs, insbesondere eines aus Aluminium oder einer Aluminiumlegierung hergestellten Konvektorblechs, wobei das Konvektorblech als eine Aneinanderreihung identischer zu einem Symmetriepunkt punktsymmetrischer Querschnittsteile auffassbar ist und jedes Querschnittsteil eine lange, durch den Symmetriepunkt des Querschnittsteils verlaufende Wandung sowie zwei jeweils an Endstellen der langen Wandung angrenzende kurze Wandungen besitzt, wobei die lange Wandung zwei Knickstellen aufweist, die diese in zwei kurze Wandungsabschnitte und einen langen Wandungsabschnitt unterteilen, wobei die Knickstellen symmetrisch bezüglich des Symmetriepunktes angeordnet sind.Furthermore, the present invention relates to a method for producing a Konvektorblechs, in particular made of aluminum or aluminum alloy Konvektorblechs, wherein the Konvektorblech is conceivable as a juxtaposition identical to a point of symmetry point-symmetrical cross-sectional parts and each cross-sectional part a long, running through the symmetry point of the cross-sectional part wall and two adjacent each end of the long wall has short walls, the long wall having two kinks, which divide them into two short wall sections and a long wall section, wherein the kinks are arranged symmetrically with respect to the point of symmetry.
Konvektorbleche der eingangs beschriebenen Art sind beispielsweise aus der
Die vorgenannte Schrift offenbart eine Technik, mittels welcher ein Band aus Aluminium beziehungsweise einer Aluminiumlegierung kontinuierlich mittels zweier ineinander greifender Walzen in eine mäanderförmige Querschnittsform bringbar ist. Die Konvektorbleche werden nach ihrer umformtechnischen Herstellung meist mittels Widerstandspunktschweißen mit einer Heizplatte eines Plattenheizkörpers verbunden, wodurch zwischen dem Konvektorblech und der Heizplatte Konvektionskanäle gebildet werden, in denen erwärmte Luft unterstützt durch den Kamineffekt aufsteigen kann und dadurch die Wärmeabgabe des Heizkörpers steigert. Sämtliche in vorgenanntem Dokument beschriebenen Querschnittsgeometrien des Konvektorbleches sind jedoch als verbesserungswürdig zu beurteilen, da ein optimales Verhältnis eines Umfangs eines jeden Konvektionskanals zu dessen Fläche nicht erreicht wird. In erster Linie besteht dabei das Problem, dass die Konvektorbleche auf einer bestimmten Länge zu wenige einzelne Konvektionskanäle aufweisen und eine gewünscht hohe Effektivität der Energieübertragung von dem Heizkörper über das Konvektorblech auf die zu heizende Luft nicht erreicht werden kann.The aforementioned document discloses a technique by means of which a strip of aluminum or an aluminum alloy can be continuously brought into a meandering cross-sectional shape by means of two intermeshing rolls. The convector sheets are after their forming production usually connected by resistance spot welding with a hot plate of a plate heater, which convection channels are formed between the convector and the heating plate, in which heated air can rise supported by the chimney effect and thereby increases the heat output of the radiator. However, all described in the above document cross-sectional geometries of Konvektorbleches are judged to be in need of improvement, since an optimum ratio of a circumference of each convection channel is not achieved to its surface. In the first place, there is the problem that the Konvektorbleche on a certain length too few individual convection channels and a desired high efficiency of energy transfer from the radiator on the convector plate on the air to be heated can not be achieved.
Ein Versuch, ein derartiges optimales Verhältnis zu erreichen, zeigt wiederum die
Die Aufgabe der vorliegenden Erfindung besteht darin, ein Konvektorblech der eingangs beschriebenen Art dahingehend weiterzuentwickeln, dass ein besseres Verhältnis zwischen dem Umfang des Konvektorblechs, das heißt dessen gestreckter Länge, und der Fläche des aus der Kombination des Konvektorblechs mit dem Heizkörper entstehenden Konvektionskanals erreicht wird, wobei ferner ein Verfahren hervorgebracht werden soll, mittels dessen dieses Konvektorblech in einem kontinuierlichen Prozess hergestellt werden kann.The object of the present invention is to develop a Konvektorblech of the type described above to the effect that a better ratio between the circumference of the Konvektorblechs, that is its elongated length, and the surface of the resulting from the combination of Konvektorblechs with the radiator convection is achieved further to provide a method by which this convector sheet can be manufactured in a continuous process.
Die zugrunde liegende Aufgabe wird aus vorrichtungstechnischer Sicht erfindungsgemäß dadurch gelöst, dass die lange Wandung zwei Knickstellen aufweist, die diese in zwei kurze Wandungsabschnitte und einen langen Wandungsabschnitt unterteilen, wobei die Knickstellen symmetrisch bezüglich des Symmetriepunktes angeordnet sind. Durch derartige Knickstellen kann eine optimierte Form eines Konvektorblechs unter Verwendung eines kontinuierlichen Umformprozesses erreicht werden.The underlying object is achieved according to the invention from a device technical point of view, that the long wall has two kinks, which divide them into two short wall sections and a long wall section, wherein the kinks are arranged symmetrically with respect to the point of symmetry. By such kinks an optimized shape of a Konvektorblechs can be achieved using a continuous forming process.
Mittels der Knickstellen ist es möglich, einen Winkel zwischen der langen und der kurzen Wandung zu vergrößern, indem - bei einer Betrachtung eines Querschnitts des Konvektorblechs - der lange Wandungsabschnitt der langen Wandung "steiler" (in Bezug zu einer Tangentialebene an die Wellenberge beziehungsweise Wellentäler auf einer Seite des Konvektorblechs) orientiert wird, als der kurze Wandungsabschnitt der langen Wandung. Daraus resultiert eine Vergrößerung des Winkels zwischen dem jeweiligen langen Wandungsabschnitt der langen Wandung und der kurzen Wandung, was wiederum zu einer Reduktion einer parallel zu einer Vorschubrichtung des kontinuierlich umzuformenden Konvektorblechs orientierten Breite eines jeden Konvektionskanals führt. Entsprechend ist es gegenüber dem Stand der Technik nun auch unter Verwendung eines kontinuierlichen Umformungsverfahrens möglich, bei einer vorgegebenen Breite eines beispielhaften Heizkörpers ebenso viele Konvektionskanäle beziehungsweise Konvektionskanäle mit einer solche großen Querschnittsfläche vorzusehen, wie dies bisher nur unter Verwendung eines Umformungsverfahrens mit taktweisem Pressen möglich war. Die Breite eines jeden Konvektionskanals lässt sich dabei umso weiter reduzieren, je steiler der lange Wandungsabschnitt der langen Wandung ausfällt und je näher die Knickstellen an den kurzen Wandungen liegen, die jeweils an die kurzen Wandungsabschnitte angrenzen. Aufgrund der Geometrie der Zähne der beiden Walzen des Walzenpaares, die so geformt sein müssen, dass sie miteinander kämmen können, ist jedoch nicht jede beliebige Form umsetzbar, da die ineinander kämmenden Walzen ansonsten verhaken und blockieren würden.By means of the kinks, it is possible to increase an angle between the long and the short wall by - looking at a cross section of the convector - the long wall portion of the long wall "steeper" (with respect to a tangential plane of the wave crests or troughs on one side of the convector sheet) than the short wall portion of the long wall. This results in an increase in the angle between the respective long wall section of the long wall and the short wall, which in turn leads to a reduction of a parallel oriented to a feed direction of the convector convector continuously shaped width of each convection channel. Accordingly, it is now possible with respect to the prior art also using a continuous forming process to provide as many convection channels or convection channels with such a large cross-sectional area at a given width of an exemplary radiator, as previously possible only using a forming method with cyclic pressing. The width of each convection channel can be further reduced, the steeper the long wall section of the long wall fails and the closer the kinks lie on the short walls, each adjacent to the short wall sections. However, due to the geometry of the teeth of the two rolls of the roll pair, which must be shaped so that they can mesh with each other, not any shape is feasible, since the intermeshing rolls would otherwise catch and block.
Die Erzeugung eines steilen Verlaufs der langen Wandung unter Verwendung eines kontinuierlichen Umformungsverfahrens ist indes auch nach dem Stand der Technik bereits möglich, geht aber stets mit dem Nachteil einher, dass die kurze Wandung, die gleichermaßen die Verbindungsstelle zwischen dem jeweiligen Heizkörper und dem Konvektorblech darstellt, besonders breit sein muss, um eine Kämmbarkeit des Walzenpaares sicherzustellen. Unter Zuhilfenahme der erfindungsgemäßen Ausgestaltung der langen Wandung unter Verwendung zweier Knickstellen ist es nun hingegen möglich, einen großen Teil der langen Wandung, nämlich den langen Wandungsabschnitt, steil zu orientieren und gleichzeitig die kurze Wandung ähnlich kurz auszugestalten, wie es bisher nur unter Verwendung eines taktweisen Pressverfahrens für die Umformung des Konvektorblechs möglich ist. Da das Konvektorblech aus Aluminium oder einer Aluminiumlegierung besteht, ist eine in Vorschubrichtung des Aluminiumbandes gemessene Länge der kurzen Verbindungsstelle zwischen dem Heizkörper und dem Konvektorblech ausreichend, um genügend Wärme in das Konvektorblech einzuleiten, so dass in den gebildeten Konvektionskanälen der gewünschte Effekt der aufsteigenden Luftströmung ("Kamineffekt") entsteht.The generation of a steep course of the long wall using a continuous forming process, however, is already possible according to the prior art, but always involves the disadvantage that the short wall, which likewise represents the connection point between the respective radiator and the convector sheet, must be particularly wide to ensure a combability of the roller pair. With the aid of the inventive design of the long wall using two kinks, however, it is now possible to steep a large part of the long wall, namely the long wall section, steep and at the same time to design the short wall as short as it was previously only using a cyclic Pressing method for forming the Konvektorblechs is possible. Since the convector plate is made of aluminum or an aluminum alloy, measured in the feed direction of the aluminum strip length of the short joint between the radiator and the convector is sufficient to introduce sufficient heat into the convector plate, so that in the convection formed the desired effect of the rising air flow ( "Chimney effect") arises.
Optimalerweise sollte das Konvektorblech so ausgeformt sein, dass der erste Wandungsabschnitt und der zweite Wandungsabschnitt der durch die Knickstellen unterteilten langen Wandung einen Winkel zwischen 5° und 20°, vorzugsweise zwischen 10° und 15°, weiter vorzugsweise einen Winkel zwischen 12,5° und 13,5°, einschließen und außerdem die kurzen Wandungen mit den jeweils angrenzenden kurzen Wandungsabschnitten der durch die Knickstellen unterteilten langen Wandung einen Winkel zwischen 50° und 70°, vorzugsweise einen Winkel von 60° einschließen. Untersuchungen haben zeigen können, dass diese geometrischen Ausgestaltungen zu einem besonders guten Flächenverhältnis des Konvektorblechs bei gleichzeitig gegebener Durchführbarkeit des Umformungsprozesses mittels des kontinuierlichen Umformungsverfahrens führt.Optimally, the convector plate should be formed so that the first wall portion and the second wall portion of the divided by the kinks long wall an angle between 5 ° and 20 °, preferably between 10 ° and 15 °, more preferably an angle between 12.5 ° and 13.5 °, and also include the short walls with the respective adjacent short wall sections of the divided by the kinks long wall an angle between 50 ° and 70 °, preferably an angle of 60 °. Investigations have been able to show that these geometric configurations lead to a particularly good area ratio of the convector sheet with simultaneous feasibility of the forming process by means of the continuous forming process.
Dies wird ferner begünstigt, wenn ein in eine Vorschubrichtung des Bandes gemessener Abstand zwischen den beiden Endstellen der langen Wandung zwischen 5 mm und 20 mm, vorzugsweise zwischen 10 mm und 15 mm, weiter vorzugsweise etwa 12,8 mm beträgt.This is further promoted when measured in a feed direction of the tape distance between the two end points of the long wall between 5 mm and 20 mm, preferably between 10 mm and 15 mm, more preferably about 12.8 mm.
Hinsichtlich des Umformungsprozesses ist es besonders von Vorteil, wenn die Vorschubgeschwindigkeit des Aluminiumbandes konstant ist, das heißt keinen Schwankungen unterliegt. Der Produktionsablauf ist durch eine derartige Gleichförmigkeit in der Umformung besonders einfach planbar und weiterverarbeitende Maschinen und Abläufe sind deutlich einfacher einstellbar, so dass ein einheitlicher und kontinuierlicher Produktionsprozess begünstigt wird. Eine zu bevorzugende Beschaffenheit des Konvektorblechs sieht vor, dass sowohl die lange Wandung als auch die kurze Wandung im Wesentlichen eben sind. Eine ebene Form der Wandungen begünstigt die Möglichkeit einer Lagerhaltung, da die fertig umgeformten und auf eine bestimmte Länge geschnittenen Konvektorbleche übereinander gestapelt werden können, ohne dass aufgrund etwaiger Unebenheiten in den großen flächigen Abschnitten des Konvektorblechs unerwünschte Reibungs- oder gar Verzahnungseffekte auftreten. Ebene Flächen sind im Rahmen des kontinuierlichen Umformungsprozesses ferner deutlich einfacher zu erzeugen als anders geartete Geometrien.With regard to the forming process, it is particularly advantageous if the feed rate of the aluminum strip is constant, that is subject to any fluctuations. The production process is particularly easy to plan by such a uniformity in the forming and further processing machines and processes are much easier adjustable, so that a uniform and continuous production process is favored. A preferable nature of the Konvektorblechs provides that both the long wall and the short wall are substantially flat. A flat shape of the walls favors the possibility of storage, since the finished formed and cut to a certain length convector sheets can be stacked without unwanted frictional or even gearing effects occur due to any bumps in the large flat portions of the convector. Flat surfaces are also much easier to produce than other types of geometry as part of the continuous forming process.
Aus verfahrenstechnischer Sicht wird die zugrunde liegende Aufgabe durch die folgenden Verfahrensschritte gelöst:
- a) Ein vorzugsweise aus Aluminium oder einer Aluminiumlegierung gebildetes Band wird fortwährend mit einer vorzugsweise konstanten Vorschubgeschwindigkeit auf ein aus zwei Walzen gebildetes Walzenpaar zu bewegt.
- b) Mittels des Walzenpaares wird das Band kontinuierlich in eine zumindest teilweise mäanderförmige, aus einer Vielzahl von Querschnittsteilen gebildete Querschnittsform umgeformt.
- c) Die zumindest teilweise mäanderförmige Querschnittsform wird in einzelne Konvektorbleche vereinzelt.
- a) A preferably formed of aluminum or an aluminum alloy strip is continuously moved at a preferably constant feed rate to a pair of rolls formed from two rollers.
- b) By means of the pair of rollers, the band is continuously formed into an at least partially meander-shaped, formed from a plurality of cross-sectional parts cross-sectional shape.
- c) The at least partially meander-shaped cross-sectional shape is separated into individual Konvektorbleche.
Im Hinblick auf die komplexe Geometrie des erfindungsgemäßen Konvektorblechs ist ein derartiges kontinuierliches Verfahren bislang unbekannt, gleichwohl besonders vorteilhaft, da die Produktionszeit für die einzelnen Konvektorbleche gegenüber der nach dem Stand der Technik bekannten zyklischen Fertigungsweise erheblich verkürzt wird. Um die Geometrie des Konvektorblechs wie beschrieben erzeugen zu können, sind die Walzen beziehungsweise deren Zähne speziell geformt, wie insbesondere aus den Ausführungsbeispielen hervorgeht.With regard to the complex geometry of the convector sheet according to the invention, such a continuous method is hitherto unknown, but nevertheless particularly advantageous, since the production time for the individual convector sheets is considerably shortened in comparison with the cyclical production method known from the prior art. In order to be able to produce the geometry of the convector plate as described, the rollers or their teeth are specially shaped, as can be seen in particular from the exemplary embodiments.
Besonders vorteilhaft ist ein solches Verfahren, bei dem das Band von einem Zeitpunkt eines Eingriffs eines vorderen, als erstes mittels des Walzenpaares eingreifenden Endabschnitts des Bandes an ausschließlich mittels des Walzenpaares nachgeführt wird. Auf diese Weise kann eine gesonderte Vorrichtung zum Vorschub des Bandes entfallen, während das Walzenpaar allein durch dessen Drehung und mittels dessen Eingriff mit dem Band dafür sorgt, dass das Band "nachgezogen" wird.Particularly advantageous is such a method in which the band is tracked from a time of engagement of a front, engaging first by means of the roller pair end portion of the belt to exclusively by means of the roller pair. In this way, a separate device for feeding the tape can be omitted, while the pair of rollers only by its rotation and by its engagement with the tape ensures that the tape is "tightened".
Ferner kann es von besonderem Vorteil sein, wenn ein Abstand von Mittelachsen der das Walzenpaar bildenden Walzen vor und/oder während der Umformung des Bandes verändert wird. Auf diese Weise kann das Herstellverfahren an die jeweiligen Gegebenheiten des zugrunde liegenden Materials in Form des Aluminiumbandes angepasst werden. Dies kann im Hinblick auf unterschiedliche Blechdicken des Bandes notwendig sein.Furthermore, it may be of particular advantage if a distance from central axes of the rollers forming the roller pair is changed before and / or during the deformation of the belt. In this way, the manufacturing process can be adapted to the particular conditions of the underlying material in the form of the aluminum strip. This may be necessary in view of different sheet thicknesses of the tape.
Das erfindungsgemäße Konvektorblech sowie das Verfahren zu dessen Herstellung wird nachfolgend anhand eines Ausführungsbeispiels, das in den Figuren dargestellt ist, näher erläutert.The convector plate according to the invention and the method for its production will be explained in more detail using an exemplary embodiment which is illustrated in the figures.
Es zeigt:
- Fig. 1:
- einen Querschnitt durch ein Querschnittsteil eines erfindungsgemäßen Konvektorblechs,
- Fig. 2:
- einen Ausschnitt des erfindungsgemäßen Konvektorblechs, bestehend aus mehreren Querschnittsteilen und
- Fig. 3:
- ein Ausschnitt eines Walzenpaares während eines Verfahrens zur Herstellung des erfindungsgemäßen Konvektorblechs.
- Fig. 1:
- a cross section through a cross-sectional part of a Konvektorblechs invention,
- Fig. 2:
- a section of the convector according to the invention, consisting of several cross-sectional parts and
- 3:
- a section of a pair of rollers during a process for producing the Konvektorblechs invention.
Das in
Ein Winkel α zwischen der kurzen Wandung 2 und dem kurzen Wandungsabschnitt 4 beträgt in dem in
Ein aus einer Vielzahl von Querschnittsteilen 1 zusammengefügtes Konvektorblech 11 ist in
Die Geometrie des gezeigten Querschnittsteils 1 beziehungsweise des gezeigten Konvektorblechs 11 wird mittels eines kontinuierlichen Umformungsprozesses erzeugt, wobei Zähne 16 eines Walzenpaares miteinander kämmen und dadurch das zwischen dem Walzenpaar verlaufende Aluminiumblech verformen. Eine Momentaufnahme dieses erfindungsgemäßen Verfahrens ist in
- 11
- QuerschnittsteilCross sectional
- 22
- Wandungwall
- 33
- Wandungwall
- 44
- Wandungsabschnittwall section
- 55
- Wandungsabschnittwall section
- 66
- Endstelleterminal
- 77
- Knickstellekink
- 88th
- Pfeilarrow
- 99
- Längelength
- 1010
- Symmetriepunktpoint of symmetry
- 1111
- KonvektorblechKonvektorblech
- 1212
- Achseaxis
- 1313
- Längelength
- 1414
- Konvektionskanalconvection
- 1515
- Breitewidth
- 1616
- Zahntooth
- 1717
- Walzeroller
- 1818
- Kreisbahnorbit
- αα
- Winkelangle
- ββ
- Winkelangle
- γγ
- Winkelangle
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12170396T PL2529851T3 (en) | 2011-06-01 | 2012-06-01 | Roll-formed convector sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202011050322U DE202011050322U1 (en) | 2011-06-01 | 2011-06-01 | Roll formed convector sheet |
Publications (2)
Publication Number | Publication Date |
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EP2529851A1 true EP2529851A1 (en) | 2012-12-05 |
EP2529851B1 EP2529851B1 (en) | 2019-11-13 |
Family
ID=46318871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12170396.1A Active EP2529851B1 (en) | 2011-06-01 | 2012-06-01 | Roll-formed convector sheet |
Country Status (3)
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EP (1) | EP2529851B1 (en) |
DE (1) | DE202011050322U1 (en) |
PL (1) | PL2529851T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110961507A (en) * | 2019-12-13 | 2020-04-07 | 北京北方车辆集团有限公司 | High strength is spline cold instrument of beating for torsion shaft |
Citations (5)
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---|---|---|---|---|
DE2628160A1 (en) * | 1975-07-25 | 1977-02-17 | Metalliques Entrepr Cie Fse | Air cooled heat exchanger for atomic reactor condenser - comprises adjacent elements with attached pipe coils |
EP0813036A2 (en) | 1996-06-14 | 1997-12-17 | Caradon Heating Europe B.V. | Panel radiators |
WO2006131685A2 (en) * | 2005-06-09 | 2006-12-14 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Plate heat exchanger with exchanging structure forming several channels in a passage |
DE202009017777U1 (en) | 2009-12-22 | 2010-06-02 | Caradon Stelrad B.V. | Convector plates for radiators |
WO2011055515A1 (en) * | 2009-11-05 | 2011-05-12 | 臼井国際産業株式会社 | Fin member for heat exchanger |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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AT382959B (en) * | 1985-07-22 | 1987-05-11 | Vogel & Noot Ag | RADIATOR |
FR2603880B1 (en) * | 1986-09-15 | 1990-09-07 | Solvay | PROCESS FOR THE MANUFACTURE OF A POWDER FOR CERAMIC MATERIALS, CONTAINING AT LEAST ONE METAL OXIDE, AND POWDER FORMED FROM AT LEAST ONE METAL OXIDE OBTAINED BY THIS PROCESS |
DE8626670U1 (en) * | 1986-10-08 | 1986-11-27 | Prof. Dr. E. Sommer GmbH, 4750 Unna | Panel radiators |
DE19921144B4 (en) * | 1999-05-07 | 2010-06-02 | Caradon Heating Europe B.V. | radiator |
-
2011
- 2011-06-01 DE DE202011050322U patent/DE202011050322U1/en not_active Expired - Lifetime
-
2012
- 2012-06-01 PL PL12170396T patent/PL2529851T3/en unknown
- 2012-06-01 EP EP12170396.1A patent/EP2529851B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2628160A1 (en) * | 1975-07-25 | 1977-02-17 | Metalliques Entrepr Cie Fse | Air cooled heat exchanger for atomic reactor condenser - comprises adjacent elements with attached pipe coils |
EP0813036A2 (en) | 1996-06-14 | 1997-12-17 | Caradon Heating Europe B.V. | Panel radiators |
WO2006131685A2 (en) * | 2005-06-09 | 2006-12-14 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Plate heat exchanger with exchanging structure forming several channels in a passage |
WO2011055515A1 (en) * | 2009-11-05 | 2011-05-12 | 臼井国際産業株式会社 | Fin member for heat exchanger |
DE202009017777U1 (en) | 2009-12-22 | 2010-06-02 | Caradon Stelrad B.V. | Convector plates for radiators |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110961507A (en) * | 2019-12-13 | 2020-04-07 | 北京北方车辆集团有限公司 | High strength is spline cold instrument of beating for torsion shaft |
CN110961507B (en) * | 2019-12-13 | 2024-06-11 | 北京北方车辆集团有限公司 | Spline cold-forging tool for high-strength torsion shaft |
Also Published As
Publication number | Publication date |
---|---|
PL2529851T3 (en) | 2020-05-18 |
DE202011050322U1 (en) | 2012-09-03 |
EP2529851B1 (en) | 2019-11-13 |
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