EP1146209B1 - Fan drive - Google Patents
Fan drive Download PDFInfo
- Publication number
- EP1146209B1 EP1146209B1 EP01106768A EP01106768A EP1146209B1 EP 1146209 B1 EP1146209 B1 EP 1146209B1 EP 01106768 A EP01106768 A EP 01106768A EP 01106768 A EP01106768 A EP 01106768A EP 1146209 B1 EP1146209 B1 EP 1146209B1
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- EP
- European Patent Office
- Prior art keywords
- fan
- tensioning
- cooling system
- drive
- rear wall
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- F28D1/04—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 tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
- F01P2003/182—Arrangements or mounting of liquid-to-air heat-exchangers with multiple heat-exchangers
Definitions
- the invention relates to a fan drive for the cooling system of a motor vehicle, wherein the centrifugal fan in the center of a box-shaped cooling system, consisting of a plurality of coolers for different media, is arranged, the drive member is mounted in the rear wall of the cooling system and having a driven pulley with a driving pulley is connected to a shaft of the engine of the motor vehicle by means of V-belt or the like.
- V-belts which are arranged between a pulley on the crankshaft of the engine and a pulley on the shaft of the fan.
- the V-belt also runs over a movable tensioning roller.
- the movable tensioner pulley and the driving pulley are attached to the housing of the engine.
- the engine drives other auxiliary machinery, such as water pumps, hydraulic pumps, compressors and generators, which in some cases creates structural confinement that hinders accessibility in the event of inspection and maintenance activities.
- the first principle on which the present invention is based, has attached the cooling system to the frame of the motor vehicle and stored the fan on the cooling system. This principle also shows the mentioned DE 41 17 336 A1.
- the cooling system and the fan are attached directly to the engine, while the third principle, the cooling system is attached to the frame and the fan has been stored on the crankshaft of the engine.
- the fan drive described above corresponds to WO 98/45600, which also relates to a box-shaped cooling system and also belongs to the described first principle. There, however, no constructive solution for the drive is given, but has only been generally spoken of a belt drive.
- the object of the invention is to design the fan drive so that the cooling system remains very compact, ensures safe continuous operation and offers montagee Organice advantages for the manufacturers of motor vehicles.
- the rear wall has support struts, which converge in the center, within the cooling system, where the drive member of the fan is mounted, outside of the center, a carrier connected to the rear wall is arranged, at which the pivot point of a clamping lever is located carries a tension roller and that the driving, the driven pulley and the tension roller are arranged in front of or in the plane in which lies the trailing edge of the radiator or the trailing edge of the rearmost protruding radiator of the cooling system.
- the tension roller is rotatably mounted at one end of a clamping lever, at the other end clamping elements are arranged, which consist of a tension spring and a working cylinder.
- the clamping lever itself is mounted on a fixed point of the rear wall or a support strut thereof, so that it is pivotable about this point.
- the tension spring is used to maintain the belt tension during operation, while the preferably pneumatically actuated working cylinder can bring the clamping lever and thus the tension roller in a position in which the changing of the V-belt is easily possible.
- a pneumatic cylinder is particularly advantageous when the cooling system is provided for trucks because they have compressed air, which is also available at standstill of the truck and can be used.
- the plane formed by the driven pulley of the fan, by the driving pulley and by the tension roller is located within the retracted rear wall, so that only very little additional space is required. Lateral relative movements are also possible, wherein the movable tensioner ensures that the V-belts are under optimal tension in all operating situations.
- pulleys can also be offset relative to one another if the installation or space conditions in the motor vehicle require this.
- the driving pulley is easy to connect to the connecting flange on the crankshaft of the prime mover.
- the distance between the prime mover and the cooling system is substantially reduced, whereby space is saved.
- the cooling system according to the invention is equipped with the complete fan drive, which now forms part of the same, so that when mounting in the motor vehicle only their attachment to the frame of the motor vehicle and the connection between the drive member, the drive flange on the crankshaft of the engine, and the aforementioned flange must be done on the cooling system. Due to the relocation of the parts of the fan drive from the engine to the cooling system was the improved constructive freedom with respect to the drives for other auxiliary machines on the drive machine.
- the pulleys may be in a variant of the inventive idea multiple pulleys and / or provide the ability to transmit torques and
- Example characterized in that one of the pulleys is formed in two parts and the two parts can be pushed together or apart depending on the torque, whereby the running in the pulley V-belt shifts closer or further to the axis of the pulley, resulting in changed speeds.
- the devices required for this purpose belong to the state of the art.
- a belt drive which offers these possibilities, for example, from EP 0 020 005 and therefore does not need to be described in more detail.
- the drive member of the fan may be a drive shaft.
- the drive member should be a continuously variable clutch, for example a viscous coupling or an electromagnetic clutch. This eliminates the formation of the pulley with speed-changing features or properties.
- the back wall will be a four sided frame construction. In one embodiment, only three support struts are present. Two of them extend from adjacent corners of a frame side of the cooling system to the center and the third support strut is approximately from the center of the opposite frame side to the center. However, it is also possible to dispense with the four-sided frame and, for example, four support struts lead in a star shape from the corners to the center, as shown in the previously unpublished application DE 199 50 753.8.
- the local design of the rear wall should - be used for the present application - at least in terms of the arrangement of the support struts.
- the support structure of the rear wall is preferably made of aluminum and can be designed both as a welded construction and in die-cast aluminum.
- the cover between the support struts can be made of plastic or aluminum sheet.
- the cover has stiffening beads or the like stability enhancing features known from light metal construction.
- the rear wall 8 is a frame structure having four sides 25 to 28, which consist of profiled aluminum. Three support struts 12, 13 and 14 extend to the center 3, in which the drive member 7 of the fan 2 is rotatably mounted.
- the drive member 7 is a continuously switchable electromagnetic clutch.
- the clutch 7 is equipped with a driven pulley 9 and connected on the output side with the impeller of the fan 2.
- a carrier 15 is connected. At a not shown embodiment, the carrier 15 is not connected to the center 3 but with the frame construction of the rear wall 8.
- the pivot point 16 or pivot point of the clamping lever 17 has been provided on the carrier 15, the pivot point 16 or pivot point of the clamping lever 17 has been provided.
- the one end 20 of the clamping lever 17 carries a tensioning roller 18.
- the tensioning roller 18 is connected to a ball bearing 29 at the end 20 of the clamping lever 17.
- the pivot point 16 of the clamping lever 17 is of ordinary type.
- At the other end 21 of the clamping lever 17 engage a tension spring 23 and a pneumatic cylinder 24, as shown in FIGS. 1, 3 and 4 show.
- the tension spring 23 and the pneumatic cylinder 24 on a common abutment 32 on the support strut 12.
- the pneumatic cylinder 24 has been attached exclusively to the abutment 32, while for the function of the tension spring 23, a rail 34 has been provided, which has at its end an abutment 35 for the tension spring 23, which during operation of the cooling system 1 via the clamping lever 17th absorbs forces acting on the tension spring 23.
- the piston rod 33 of the double-acting pneumatic cylinder 24 is extended, whereby the clamping lever 17 is rotated about the pivot point 16 and the tension roller 18 assumes a position in which the removal of the V-belt 11 can take place.
- a known clamping element 22 may be used, which combines both functions in itself.
- Such a clamping element 22 that has a tension spring with a damping element in itself is z.
- a pivotable abutment 32 must be provided in order to change the V-belt 11 can.
- the cooling system has different radiators 4, 5 and 6.
- Another cooler is located opposite the radiator 6, so that the cooling system 1 has a radiator on all four sides. It is understood, however, that these coolers can also be interconnected, so that it is no longer different coolers.
- the radiator 6 and the radiator 5 could be a common cooling liquid cooler.
- the upper radiator 4 is a charge air cooler.
- the intercooler 4 has a trailing edge 30 which is located in the plane 31.
- the trailing edge 30 of the other radiator 5 and 6 is located further forward in this embodiment.
- the two pulleys 9 and 10 and the tension roller 18 have been arranged, which are also arranged on a plane 19 in this embodiment.
- the driving pulley 10 is provided with a connecting flange 35, to which a drive shaft, not shown, of the drive machine is connected. From Fig. 2 also shows that the fan drive and the entire cooling system 1 were formed so that no projection to the rear is present, which is why a space-saving, compact design of the cooling system has been achieved with the prime mover.
- a cover 40 is fixed, which has a further leading into the interior of the cooling system 1 gradation 41, which was designed circular in the embodiment.
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- General Details Of Gearings (AREA)
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Abstract
Description
Die Erfindung betrifft einen Ventilatorantrieb für die Kühlanlage eines Kraftfahrzeuges, bei der der Radialventilator im Zentrum einer kastenförmigen Kühlanlage, bestehend aus mehreren Kühlern für unterschiedliche Medien, angeordnet ist, dessen Antriebsorgan in der Rückwand der Kühlanlage gelagert ist und eine angetriebene Riemenscheibe aufweist, die mit einer antreibenden Riemenscheibe an einer Welle der Antriebsmaschine des Kraftfahrzeuges mittels Keilriemen oder dergleichen verbunden ist.The invention relates to a fan drive for the cooling system of a motor vehicle, wherein the centrifugal fan in the center of a box-shaped cooling system, consisting of a plurality of coolers for different media, is arranged, the drive member is mounted in the rear wall of the cooling system and having a driven pulley with a driving pulley is connected to a shaft of the engine of the motor vehicle by means of V-belt or the like.
In der bisher unveröffentlichten Anmeldung DE 199 50 753.8 wird eine kastenförmige Kühlanlage beschrieben, in deren Rückwand die Antriebswelle des Radialventilators gelagert ist, die mit einem Anschlußflansch ausgerüstet ist. Über den Ventilatorantrieb selbst ist dort nur soviel gesagt worden, daß sich derselbe überwiegend in dem Raum befinden kann, der durch die eingezogene Rückwand zur Verfügung gestellt worden ist.In the hitherto unpublished application DE 199 50 753.8 a box-shaped cooling system is described, in whose rear wall the drive shaft of the centrifugal fan is mounted, which is equipped with a connecting flange. About the fan drive itself there has been said only so much that the same can be located predominantly in the space that has been provided by the retracted rear wall.
Mit der DE 41 17 336 A1 wurde ein Ventilatorantrieb bekannt, der Relativbewegungen zwischen Motor und Kühlanlage ausgleichen kann. Das wird dort dadurch erreicht, daß zwischen dem Motor und dem Ventilator eine Bewegungsausgleichsvorrichtung angeordnet wurde, die in einem bevorzugten Ausführungsbeispiel als Faltenbalg ausgebildet ist. Der Faltenbalg hat möglicherweise gegenüber bekannten elastischen Wellen einige Vorteile, jedoch hat dieser sich bisher nicht durchsetzen können, vermutlich weil seine Eignung im Dauerbetrieb beschränkt ist, denn ein solcher Faltenbalg unterliegt enormen Beanspruchungen, denen die verwendeten Materialien nicht entsprechen können.With DE 41 17 336 A1 discloses a fan drive was known, which can compensate for relative movements between the engine and cooling system. This is achieved in that between the motor and the fan, a motion compensation device has been arranged, which is formed in a preferred embodiment as a bellows. The bellows may have some advantages over known elastic waves, but this has not been able to prevail, probably because its suitability is limited in continuous operation, because such a bellows is subject to enormous stresses, which the materials used can not comply.
Ventilatoren in Kraftfahrzeugen werden oft mittels Keilriemen angetrieben, die zwischen einer Riemenscheibe an der Kurbelwelle des Motors und einer Riemenscheibe an der Welle des Ventilators angeordnet sind. Zum Ausgleich der erwähnten Relativbewegungen und um der Dehnung der Keilriemen zu begegnen, läuft der Keilriemen zusätzlich über eine bewegliche Spannrolle. Die bewegliche Spannrolle und die antreibende Riemenscheibe sind am Gehäuse des Motors befestigt. Zusätzlich treibt der Motor andere Hilfsmaschinen wie Wasserpumpen, Hydraulikpumpen, Kompressoren und Generatoren an, wodurch in manchen Fällen eine bauliche Enge entsteht, die die Zugänglichkeit im Falle von Inspektions - und Wartungstätigkeiten behindert.Fans in motor vehicles are often driven by V-belts, which are arranged between a pulley on the crankshaft of the engine and a pulley on the shaft of the fan. To compensate for the mentioned relative movements and to counteract the stretching of the V-belts, the V-belt also runs over a movable tensioning roller. The movable tensioner pulley and the driving pulley are attached to the housing of the engine. In addition, the engine drives other auxiliary machinery, such as water pumps, hydraulic pumps, compressors and generators, which in some cases creates structural confinement that hinders accessibility in the event of inspection and maintenance activities.
Auf der VTMS-Konferenz im Mai 1999, wurden drei Prinzipien der Anordnung und antriebsseitigen Verbindung des Motors mit dem Ventilator der Kühlanlage vorgestellt. Das erste Prinzip, auf das die vorliegende Erfindung aufbaut, hat die Kühlanlage am Rahmen des Kraftfahrzeuges befestigt und den Ventilator an der Kühlanlage gelagert. Dieses Prinzip zeigt auch die erwähnte DE 41 17 336 A1. Bei dem zweiten Prinzip sind die Kühlanlage und der Ventilator direkt am Motor befestigt, während bei dem dritten Prinzip die Kühlanlage am Rahmen befestigt ist und der Ventilator an der Kurbelwelle des Motors gelagert hat.At the VTMS conference in May 1999, three principles of the arrangement and drive-side connection of the engine with the fan of the cooling system were presented. The first principle, on which the present invention is based, has attached the cooling system to the frame of the motor vehicle and stored the fan on the cooling system. This principle also shows the mentioned
Der eingangs beschriebene Ventilatorantrieb entspricht der WO 98/45600, die sich auch auf eine kastenförmige Kühlanlage bezieht und im übrigen ebenfalls zum beschriebenen ersten Prinzip gehört. Dort ist allerdings keine konstruktive Lösung für den Antrieb angegeben, sondern nur allgemein von einem Riemenantrieb gesprochen worden.The fan drive described above corresponds to WO 98/45600, which also relates to a box-shaped cooling system and also belongs to the described first principle. There, however, no constructive solution for the drive is given, but has only been generally spoken of a belt drive.
Die Aufgabe der Erfindung besteht darin, den Ventilatorantrieb so zu gestalten, daß die Kühlanlage sehr kompakt bleibt, sicheren Dauerbetrieb gewährleistet und montagemäßige Vorteile für die Hersteller von Kraftfahrzeugen bietet.The object of the invention is to design the fan drive so that the cooling system remains very compact, ensures safe continuous operation and offers montageemäßige advantages for the manufacturers of motor vehicles.
Erfindungsgemäß ist vorgesehen, daß die Rückwand Tragstreben aufweist, die im Zentrum, innerhalb der Kühlanlage zusammenlaufen, wo das Antriebsorgan des Ventilators gelagert ist, wobei außerhalb des Zentrums ein mit der Rückwand verbundener Träger angeordnet ist, an dem sich der Drehpunkt eines Spannhebels befindet, der eine Spannrolle trägt und daß die antreibende, die angetriebene Riemenscheibe und die Spannrolle vor oder in der Ebene angeordnet sind, in der die Hinterkante der Kühler oder die Hinterkante des am weitesten nach hinten überstehenden Kühlers der Kühlanlage liegt.According to the invention it is provided that the rear wall has support struts, which converge in the center, within the cooling system, where the drive member of the fan is mounted, outside of the center, a carrier connected to the rear wall is arranged, at which the pivot point of a clamping lever is located carries a tension roller and that the driving, the driven pulley and the tension roller are arranged in front of or in the plane in which lies the trailing edge of the radiator or the trailing edge of the rearmost protruding radiator of the cooling system.
Die Spannrolle ist drehbar an einem Ende eines Spannhebels gelagert, an dessen anderem Ende Spannelemente angeordnet sind, die aus einer Zugfeder und einem Arbeitszylinder bestehen. Der Spannhebel selbst ist an einem festen Punkt der Rückwand bzw. einer Tragstrebe derselben gelagert, so daß er um diesen Punkt schwenkbar ist. Die Zugfeder dient der Aufrechterhaltung der Riemenspannung im Betrieb, während der vorzugsweise pneumatisch beaufschlagbare Arbeitszylinder den Spannhebel und somit die Spannrolle in eine Stellung bringen kann, in der das Wechseln der Keilriemen leicht möglich ist. Ein Pneumatikzylinder ist insbesondere dann vorteilhaft, wenn die Kühlanlage für Lastkraftwagen vorgesehen wird, weil diese über Druckluft verfügen, die auch im Stillstand des Lastkraftwagens vorhanden ist und genutzt werden kann.The tension roller is rotatably mounted at one end of a clamping lever, at the other end clamping elements are arranged, which consist of a tension spring and a working cylinder. The clamping lever itself is mounted on a fixed point of the rear wall or a support strut thereof, so that it is pivotable about this point. The tension spring is used to maintain the belt tension during operation, while the preferably pneumatically actuated working cylinder can bring the clamping lever and thus the tension roller in a position in which the changing of the V-belt is easily possible. A pneumatic cylinder is particularly advantageous when the cooling system is provided for trucks because they have compressed air, which is also available at standstill of the truck and can be used.
Weil die Spannrolle mit sämtlichen Funktionsteilen erfindungsgemäß von der Antriebsmaschine weg, an die Rückwand der Kühlanlage verlegt worden ist, konnte sowohl die Zugänglichkeit für Wartungsarbeiten oder dergleichen als auch die Montage der Kühlanlage mit der Antriebsmaschine verbessert werden.Because the idler pulley with all functional parts according to the invention has been moved away from the drive machine to the rear wall of the cooling system, both the accessibility for maintenance or the like as well as the installation of the cooling system could be improved with the drive machine.
Die durch die angetriebene Riemenscheibe des Ventilators, durch die antreibende Riemenscheibe sowie durch die Spannrolle gebildete Ebene befindet sich innerhalb der eingezogenen Rückwand, so daß nur sehr wenig zusätzlicher Bauraum benötigt wird. Seitliche Relativbewegungen sind ebenfalls möglich, wobei die bewegliche Spannrolle dafür sorgt, daß die Keilriemen in allen Betriebssituationen unter optimaler Spannung stehen. Es ist jedoch auch möglich, die Spannrolle außerhalb der Ebene der Riemenscheiben anzuordnen, jedoch sollen sich erfindungsgemäß sämtliche beschriebenen Teile vor oder in der Ebene befinden, in der die Hinterkante der Kühler oder des am weitesten hinten angeordneten Kühlers liegt. Die Größe des möglichen Versatzes der Riemenscheiben und der Spannrolle wird sich praktisch in relativ geringen Grenzen bewegen.The plane formed by the driven pulley of the fan, by the driving pulley and by the tension roller is located within the retracted rear wall, so that only very little additional space is required. Lateral relative movements are also possible, wherein the movable tensioner ensures that the V-belts are under optimal tension in all operating situations. However, it is also possible to arrange the tension pulley outside the plane of the pulleys, but according to the invention, all the parts described before or in the plane are in which the trailing edge of the radiator or the rearmost radiator is located. The size of the possible offset of the pulleys and the tension pulley will move practically within relatively small limits.
Ferner können auch die Riemenscheiben versetzt zueinander angeordnet sein, wenn die Einbau - bzw. die Platzverhältnisse im Kraftfahrzeug das erfordern.Furthermore, the pulleys can also be offset relative to one another if the installation or space conditions in the motor vehicle require this.
Die antreibende Riemenscheibe ist einfach mit dem Anschlußflansch an der Kurbelwelle der Antriebsmaschine zu verbinden. Der Abstand zwischen der Antriebsmaschine und der Kühlanlage wesentlich reduziert ist, wodurch Bauraum eingespart wird.The driving pulley is easy to connect to the connecting flange on the crankshaft of the prime mover. The distance between the prime mover and the cooling system is substantially reduced, whereby space is saved.
Die Kühlanlage ist erfindungsgemäß mit dem kompletten Ventilatorantrieb ausgerüstet, der nunmehr einen Teil derselben darstellt, so daß bei der Montage im Kraftfahrzeug lediglich deren Befestigung am Rahmen des Kraftfahrzeuges und die Verbindung zwischen dem Antriebsorgan, dem Antriebsflansch an der Kurbelwelle des Motors, und dem erwähnten Anschlußflansch an der Kühlanlage erfolgen muß. Durch die Verlagerung der Teile des Ventilatorantriebes vom Motor zur Kühlanlage wurde die konstruktive Freiheit bezüglich der Antriebe für andere Hilfsmaschinen an der Antriebsmaschine verbessert.The cooling system according to the invention is equipped with the complete fan drive, which now forms part of the same, so that when mounting in the motor vehicle only their attachment to the frame of the motor vehicle and the connection between the drive member, the drive flange on the crankshaft of the engine, and the aforementioned flange must be done on the cooling system. Due to the relocation of the parts of the fan drive from the engine to the cooling system was the improved constructive freedom with respect to the drives for other auxiliary machines on the drive machine.
Die Riemenscheiben können in einer Variante des erfinderischen Gedankens Mehrfach-Riemenscheiben sein oder/und die Möglichkeit bieten, die zu übertragenden Drehmomente undThe pulleys may be in a variant of the inventive idea multiple pulleys and / or provide the ability to transmit torques and
Drehzahlen zu variieren, z. B. dadurch, daß eine der Riemenscheiben zweiteilig ausgebildet ist und die beiden Teile in Abhängigkeit vom Drehmoment zusammen oder auseinander geschoben werden können, wodurch sich der in der Riemenscheibe laufende Keilriemen näher oder weiter zur Achse der Riemenscheibe verschiebt, was zu veränderten Drehzahlen führt. Die dafür erforderlichen Vorrichtungen gehören zum Stand der Technik. Ein Riemenantrieb der diese Möglichkeiten bietet, geht beispielsweise aus dem EP 0 020 005 hervor und muß deshalb nicht detaillierter beschrieben werden.To vary speeds, z. Example, characterized in that one of the pulleys is formed in two parts and the two parts can be pushed together or apart depending on the torque, whereby the running in the pulley V-belt shifts closer or further to the axis of the pulley, resulting in changed speeds. The devices required for this purpose belong to the state of the art. A belt drive which offers these possibilities, for example, from EP 0 020 005 and therefore does not need to be described in more detail.
Wird diese Variante gewählt, kann das Antriebsorgan des Ventilators eine Antriebswelle sein.If this variant is selected, the drive member of the fan may be a drive shaft.
Vorzugsweise soll jedoch das Antriebsorgan eine stufenlos schaltbare Kupplung sein, beispielsweise eine Visko - Kupplung oder eine elektromagnetische Kupplung. Dadurch erübrigt sich die Ausbildung der Riemenscheibe mit drehzahlverändernden Merkmalen bzw. Eigenschaften.Preferably, however, the drive member should be a continuously variable clutch, for example a viscous coupling or an electromagnetic clutch. This eliminates the formation of the pulley with speed-changing features or properties.
Die Anzahl und Anordnung der in der Regel als Profile ausgebildeten Tragstreben der Rückwand und deren übrige Gestaltung kann unterschiedlich sein. Überwiegend wird die Rückwand eine vierseitige Rahmenkonstruktion sein. In einem Ausführungsbeispiel sind lediglich drei Tragstreben vorhanden. Zwei davon erstrecken sich aus benachbarten Ecken einer Rahmenseite der Kühlanlage zum Zentrum und die dritte Tragstrebe geht etwa von der Mitte der gegenüberliegenden Rahmenseite zum Zentrum hin. Es ist jedoch auch möglich, auf den vierseitigen Rahmen zu verzichten und beispielsweise vier Tragstreben sternförmig aus den Ecken zum Zentrum zu führen, so wie es in der bisher unveröffentlichten Anmeldung DE 199 50 753.8 gezeigt wurde. Die dortige Ausbildung der Rückwand soll - zumindest bezüglich der Anordnung der Tragstreben - auch für die vorliegende Anmeldung herangezogen werden. Die Tragkonstruktion der Rückwand besteht vorzugsweise aus Aluminium und kann sowohl als Schweißkonstruktion als auch in Aluminium - Druckguß ausgebildet sein.The number and arrangement of the usually designed as profiles support struts of the rear wall and the rest of the design may be different. Predominantly the back wall will be a four sided frame construction. In one embodiment, only three support struts are present. Two of them extend from adjacent corners of a frame side of the cooling system to the center and the third support strut is approximately from the center of the opposite frame side to the center. However, it is also possible to dispense with the four-sided frame and, for example, four support struts lead in a star shape from the corners to the center, as shown in the previously unpublished application DE 199 50 753.8. The local design of the rear wall should - be used for the present application - at least in terms of the arrangement of the support struts. The support structure of the rear wall is preferably made of aluminum and can be designed both as a welded construction and in die-cast aluminum.
Die Abdeckung zwischen den Tragstreben kann aus Kunststoff oder aus Aluminiumblech bestehen. Die Abdeckung besitzt Versteifungssicken oder dergleichen die Stabilität erhöhende Merkmale, die aus dem Leichtmetallbau bekannt sind.The cover between the support struts can be made of plastic or aluminum sheet. The cover has stiffening beads or the like stability enhancing features known from light metal construction.
Die Erfindung wird nachfolgend in Ausführungsbeispielen beschrieben, woraus weitere Merkmale und Vorteile der Erfindung hervorgehen. Die beiliegenden Zeichnungen zeigen:
- Fig.1
- Ansicht auf eine kastenförmige Kühlanlage von hinten;
- Fig. 2
- Querschnitt durch die Kühlanlage von Fig. 1;
- Fig. 3
- Einzelheiten aus Fig. 1;
- Fig. 4
- Schnitt aus Fig. 3;
- Fig.1
- View of a box-shaped cooling system from behind;
- Fig. 2
- Cross section through the cooling system of Fig. 1;
- Fig. 3
- Details of Fig. 1;
- Fig. 4
- Section of Fig. 3;
Aus Fig. 1 ist zu erkennen, daß die Rückwand 8 eine Rahmenkonstruktion ist, die vier Seiten 25 bis 28 aufweist, die aus profiliertem Aluminium bestehen. Drei Tragstreben 12, 13 und 14 erstrecken sich zum Zentrum 3, in dem das Antriebsorgan 7 des Ventilators 2 drehbar gelagert ist. (Fig. 2) Im gezeigten Ausführungsbeispiel ist das Antriebsorgan 7 eine stufenlos schaltbare elektromagnetische Kupplung. Die Kupplung 7 ist mit einer angetriebenen Riemenscheibe 9 ausgerüstet und auf der Abtriebsseite mit dem Laufrad des Ventilators 2 verbunden. Mit dem Zentrum 3 ist ein Träger 15 verbunden. Bei einem nicht gezeigten Ausführungsbeispiel ist der Träger 15 nicht mit dem Zentrum 3 sondern mit der Rahmenkonstruktion der Rückwand 8 verbunden.From Fig. 1 it can be seen that the rear wall 8 is a frame structure having four
An dem Träger 15 ist der Drehpunkt 16 oder Schwenkpunkt des Spannhebels 17 vorgesehen worden. Das eine Ende 20 des Spannhebels 17 trägt eine Spannrolle 18. Wie die Fig. 4 zeigt, ist die Spannrolie 18 mit einem Kugellager 29 am Ende 20 des Spannhebels 17 verbunden. Der Schwenkpunkt 16 des Spannhebels 17 ist gewöhnlicher Art. Am anderen Ende 21 des Spannhebels 17 greifen eine Zugfeder 23 und ein Pneumatikzylinder 24 an, wie die Fig. 1 , 3 und 4 zeigen. In diesem Ausführungsbeispiel weisen die Zugfeder 23 und der Pneumatikzylinder 24 ein gemeinsames Widerlager 32 an der Tragstrebe 12 auf. Der Pneumatikzylinder 24 ist ausschließlich an dem Widerlager 32 befestigt worden, während für die Funktion der Zugfeder 23 eine Schiene 34 vorgesehen worden ist, die an ihrem Ende ein Gegenlager 35 für die Zugfeder 23 aufweist, das die im Betrieb der Kühlanlage 1 über den Spannhebel 17 auf die Zugfeder 23 einwirkenden Kräfte aufnimmt. Um die Keilriemen 11 zu lösen, wird die Kolbenstange 33 des doppelt wirkenden Pneumatikzylinders 24 ausgefahren, wodurch der Spannhebel 17 um den Schwenkpunkt 16 gedreht und die Spannrolle 18 eine Position einnimmt, in der das Abnehmen der Keilriemen 11 erfolgen kann. Selbstverständlich könnten anstelle der Zugfeder 23 und des Pneumatikzylinders 24 auch ein bekanntes Spannelement 22 eingesetzt werden, das beide Funktionen in sich vereinigt. Ein solches Spannelement 22, daß in sich eine Spannfeder mit einem Dämpfungselement aufweist ist z. B. Gegenstand der DE 40 39 815. Wobei dann allerdings ein schwenkbares Gegenlager 32 vorgesehen werden muß, um den Keilriemen 11 wechseln zu können.On the
Aus Fig. 2 geht hervor, daß die Kühlanlage verschiedene Kühler 4, 5 und 6 aufweist. Ein weiterer nicht gezeigter Kühler befindet sich gegenüber dem Kühler 6, so daß die Kühlanlage 1 an allen vier Seiten einen Kühler aufweist. Es versteht sich jedoch, daß diese Kühler auch verschaltet sein können, so daß es sich dann nicht mehr um unterschiedliche Kühler handelt. Beispielsweise könnte der Kühler 6 und der Kühler 5 ein gemeinsamer Kühlflüssigkeitskühler sein. Im Ausführungsbeispiel ist der obere Kühler 4 ein Ladeluftkühler. Der Ladeluftkühler 4 hat eine Hinterkante 30, die sich in der Ebene 31 befindet. Die Hinterkante 30 der anderen Kühler 5 und 6 befindet sich in diesem Ausführungsbeispiel weiter vorne. Vor der beschriebenen Ebene 31 sind die beiden Riemenscheiben 9 und 10 und die Spannrolle 18 angeordnet worden, die in diesem Ausführungsbeispiel ebenfalls auf einer Ebene 19 angeordnet sind. Die Reimenscheiben 9 und 10 und die Spannrolle 18 könnten jedoch sehr wohl auch versetzt zueinander, also nicht in einer gemeinsamen Ebene 19 liegend, angeordnet sein. Die antreibende Riemenscheibe 10 ist mit einem Anschlußflansch 35 versehen, an den eine nicht gezeigte Antriebswelle der Antriebsmaschine angeschlossen wird. Aus der Fig. 2 geht auch hervor, daß der Ventilatorantrieb und die gesamte Kühlanlage 1 so ausgebildet wurden, daß keinerlei Überstand nach hinten vorhanden ist, weshalb eine raumsparende, kompakte Gestaltung der Kühlanlage mit der Antriebsmaschine erreicht worden ist.From Fig. 2 it is apparent that the cooling system has
Zwischen den Tragstreben 12, 13, und 14 ist eine Abdeckung 40 befestigt, die eine weiter in das Innere der Kühlanlage 1 führende Abstufung 41 aufweist, die im Ausführungsbeispiel kreisförmig gestaltet wurde.Between the supporting
Claims (8)
- Fan drive for the cooling system (1) of a motor vehicle, in which the fan (2) is arranged in the centre (3) of a box-like cooling system (1) comprising a plurality of radiators (4; 5; 6) for various media, the drive element (7) of the said fan drive being mounted in the recessed rear wall (8) of the cooling system (1) and having a driven belt pulley (9) which is connected to a driving belt pulley (10) of the drive machine of the motor vehicle by means of V-belts (11) or the like,
characterized in that
the rear wall (8) has supporting struts (12; 13; 14) which merge in the centre (3), within the cooling system (1), where the drive element (7) of the fan (2) is mounted, with a support (15) which is connected to the rear wall (8) being arranged outside the centre (3) and the fulcrum (16) of a tensioning lever (17), which has a tensioning roller (18), being located on the said support,
and in that the driving belt pulley (10), the driven belt pulley (9) and the tensioning roller (18) are arranged in front of or in the plane (31) in which the rear edge (30) of the radiators (4; 5; 6) or the rear edge (30) of that radiator (4) of the cooling system (1) which projects furthest to the rear is situated. - Fan drive according to Claim 1, characterized in that the driving belt pulley (10), the driven belt pulley (9) and the tensioning roller (18) are arranged in a common plane (19).
- Fan drive according to Claim 1, characterized in that the plane of the tensioning roller (18) and the plane or planes of the belt pulleys (9; 10) are arranged such that they are offset in relation to each another.
- Fan drive according to one of Claims 1 to 3, characterized in that the tensioning roller (18) is mounted such that it can rotate at one end (20) of the tensioning lever (17), one end of at least one tensioning element (22) is fixed to the other end (21) of the said tensioning lever, and the other end of the said tensioning element is fixed to one of the supporting struts (12) of the rear wall (8).
- Fan drive according to Claim 4, characterized in that there are two tensioning elements (22), one of these tensioning elements being a tension spring (23) and the other tensioning element being a dual-action working cylinder (24) which can be acted on pneumatically.
- Fan drive according to one of the preceding claims, characterized in that a profiled cover is arranged between the supporting struts (12; 13, 14).
- Fan drive according to one of the preceding claims, characterized in that one of the belt pulleys (9; 10) is equipped with means which change the rotational speed, and the drive element (7) of the fan (2) is a drive shaft.
- Fan drive according to one of Claims 1 to 6, characterized in that the drive element (7) is an infinitely switchable clutch which is connected to the belt pulley (9) on the drive side and to the impeller of the fan (2) on the output side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10018090 | 2000-04-12 | ||
| DE10018090A DE10018090A1 (en) | 2000-04-12 | 2000-04-12 | Fan drive |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1146209A2 EP1146209A2 (en) | 2001-10-17 |
| EP1146209A3 EP1146209A3 (en) | 2003-03-05 |
| EP1146209B1 true EP1146209B1 (en) | 2006-09-06 |
Family
ID=7638443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01106768A Expired - Lifetime EP1146209B1 (en) | 2000-04-12 | 2001-03-17 | Fan drive |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6585035B2 (en) |
| EP (1) | EP1146209B1 (en) |
| AT (1) | ATE338883T1 (en) |
| DE (2) | DE10018090A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT6051U1 (en) * | 2002-02-14 | 2003-03-25 | Avl List Gmbh | COOLING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE |
| US6957735B2 (en) * | 2003-03-11 | 2005-10-25 | Graham Packaging, L.P. | Pneumatic spinner drive tensioning assembly |
| JP2006307690A (en) * | 2005-04-27 | 2006-11-09 | Kioritz Corp | Power unit |
| WO2013103610A1 (en) * | 2012-01-04 | 2013-07-11 | Longyear Tm, Inc. | Over center drill head gear shifting system |
| SE540907C2 (en) * | 2016-11-03 | 2018-12-18 | Husqvarna Ab | A dust removal arrangement for an engine-driven tool |
| US10563925B2 (en) * | 2017-07-12 | 2020-02-18 | Caterpillar Inc. | Cooling assembly for service vehicle |
| CN111854466B (en) * | 2020-08-03 | 2021-04-02 | 青岛永晟热交换器有限公司 | Engineering apparatus radiator structure convenient to dress is cut out and is changed coolant liquid |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2662748A (en) * | 1952-07-01 | 1953-12-15 | Swingfire Bahamas Ltd | Heat exchanger with adjustable casing for varying recirculation |
| US3921603A (en) * | 1974-03-18 | 1975-11-25 | Caterpillar Tractor Co | Centrifugal fan cooling system |
| CA1125543A (en) * | 1979-05-24 | 1982-06-15 | Stellios A. Avramidis | Variable speed belt drive |
| US4473362A (en) * | 1981-07-08 | 1984-09-25 | Litens Automotive Inc. | Belt tensioner with variably proportional damping |
| US4694594A (en) * | 1985-09-12 | 1987-09-22 | The Toro Company | Single stage snowthrower |
| DE3912734A1 (en) | 1989-04-19 | 1990-10-25 | Kloeckner Humboldt Deutz Ag | COOLING SYSTEM |
| DE4039815C1 (en) * | 1990-12-13 | 1992-05-27 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Tensioner for belt drive with sprung tension roller - has tensioning spring integrated in damping member, with sectional piston rod |
| DE4117336A1 (en) * | 1991-05-27 | 1992-12-03 | Behr Gmbh & Co | FAN DRIVE FOR THE RADIATOR OF A MOTOR VEHICLE |
| US5240461A (en) * | 1992-07-01 | 1993-08-31 | Deere & Company | Blower mounting with belt tensioner |
| US5358452A (en) * | 1993-09-01 | 1994-10-25 | Case Corporation | Belt tensioning mechanism |
| DE19713712C1 (en) * | 1997-04-03 | 1998-04-16 | Laengerer & Reich Gmbh & Co | Radial ventilator for cooling system of motor vehicles |
| US6478701B1 (en) * | 1997-11-13 | 2002-11-12 | Koyo Seiko Co., Ltd. | Belt type nonstage transmission system |
| US6098385A (en) * | 1998-06-30 | 2000-08-08 | Honda Giken Kogyo Kabushiki Kaisha | Drive control for self-propelled power tool |
| DE19849659A1 (en) * | 1998-10-29 | 2000-05-04 | Schaeffler Waelzlager Ohg | Tensioning device for a traction device |
| US6216778B1 (en) * | 1998-12-30 | 2001-04-17 | Case Corporation | Cooling system for an off-highway vehicle |
| US6129056A (en) * | 1999-08-23 | 2000-10-10 | Case Corporation | Cooling system for work vehicle |
| DE19950753A1 (en) | 1999-10-21 | 2001-04-26 | Modine Mfg Co | Cooling system I |
-
2000
- 2000-04-12 DE DE10018090A patent/DE10018090A1/en not_active Withdrawn
-
2001
- 2001-03-17 AT AT01106768T patent/ATE338883T1/en not_active IP Right Cessation
- 2001-03-17 EP EP01106768A patent/EP1146209B1/en not_active Expired - Lifetime
- 2001-03-17 DE DE50110913T patent/DE50110913D1/en not_active Expired - Lifetime
- 2001-04-12 US US09/833,773 patent/US6585035B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1146209A2 (en) | 2001-10-17 |
| US20010035282A1 (en) | 2001-11-01 |
| ATE338883T1 (en) | 2006-09-15 |
| DE50110913D1 (en) | 2006-10-19 |
| US6585035B2 (en) | 2003-07-01 |
| EP1146209A3 (en) | 2003-03-05 |
| DE10018090A1 (en) | 2001-11-29 |
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