EP3198150A1 - Fan wheel - Google Patents

Fan wheel

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Publication number
EP3198150A1
EP3198150A1 EP15759482.1A EP15759482A EP3198150A1 EP 3198150 A1 EP3198150 A1 EP 3198150A1 EP 15759482 A EP15759482 A EP 15759482A EP 3198150 A1 EP3198150 A1 EP 3198150A1
Authority
EP
European Patent Office
Prior art keywords
fan
hub
fan blade
fan wheel
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15759482.1A
Other languages
German (de)
French (fr)
Other versions
EP3198150B1 (en
Inventor
Uwe Aschermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP3198150A1 publication Critical patent/EP3198150A1/en
Application granted granted Critical
Publication of EP3198150B1 publication Critical patent/EP3198150B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations

Definitions

  • the invention relates to a fan, in particular for conveying cooling air, in particular for an internal combustion engine, comprising a hub on which a plurality of fan blades is arranged and wherein the hub has a rib structure.
  • Vibrations of the internal combustion engine are thus transmitted via the coupling to the fan.
  • the fan thus experiences strong vibration excitations in all directions, both as axial displacements but also in the form of tilting.
  • an impeller for a semi-axially acting fan which has a hub on which a plurality of fan blades is arranged.
  • the hub of the fan is provided with a hub ramp, which is arranged rising on the outside of the hub.
  • the hub itself is provided with cavities which are separated by radially extending web parts against each other. At this open. Hub structure, the fan blades go directly into the flat hub.
  • DE 100 05 857 A1 discloses an impeller, in particular for a fan set, in which the hub comprises a substantially annular wall, which is centered on the axis of rotation of the impeller.
  • the wings are connected to a circumferential outer surface bounding the annular wall of the hub.
  • the circumferential surface comprises two zones which are separated axially by the wings.
  • US Pat. No. 6,375,427 B1 discloses a fan for cooling an internal combustion engine, which has a hub structure formed as an auxiliary structure. This hub structure has both radially extending as well as diagonal and crossed ridges in order to increase the stability of the fan.
  • Such a hub structure is very complex to manufacture and is not always sufficient to compensate for vibrations of the internal combustion engine, which cause a strong excitation in the tilting and bending direction of the fan.
  • ADVANTAGES It is the object of the invention to provide a fan wheel for conveying cooling air, in particular for an internal combustion engine, which, despite its structurally simple design, offers a higher resistance to bending of the fan wheel.
  • the fan wheel for conveying cooling air, in particular for an internal combustion engine, on a hub on which a plurality of fan blades is arranged, wherein the hub has a circumferential rib structure.
  • the rib structure consists of substantially rectangular and planar ribs with an edge region which sit with its edge region on the hub and substantially tangential are aligned to the circumferential direction of the hub in its longitudinal extent, wherein they touch each other. As a result, the ribs reach a predetermined length, so that they run sufficiently close to a center of the fan wheel.
  • each newly formed rib extends from one fan blade to another fan blade.
  • the ribs are given a predetermined length, by means of which they can be guided past the center of the fan wheel.
  • the newly formed rib extends from the first fan blade to the fan blade arranged directly next to it.
  • the straight trained rib run in an alternative from the first fan blade to the next fan blade.
  • the newly formed rib of a fan blade 'runs to the third next fan blade.
  • the ribs which are flat or straight in this way, run close to the attachment points of the coupling, without crossing each other.
  • a development of the invention relates to a viscous fan, in particular for conveying a cooling air for an internal combustion engine, comprising a fan wheel, which is connected via a viscous coupling with a shaft of the internal combustion engine.
  • the fan of this viscous coupling has at least one inventive feature.
  • Figure 1 shows a first embodiment of the invention
  • FIG. 2 shows a second exemplary embodiment of the fan impeller according to the invention
  • Figure 3 shows a third embodiment of the invention
  • Figure 4 shows a fourth embodiment of the invention
  • a first embodiment of the fan impeller 1 according to the invention which has a flat, annular hub 2, on which a plurality of fan blades 3 are arranged, which extend approximately in the radial direction to the outside.
  • the attachment points 4 are shown for a viscous coupling, not shown, to which the fan 1 is fastened and via which the fan 1 is connectable to a world of an internal combustion engine.
  • On the flat, annular hub 2 different webs 5 are fixed, which are flat and rectangular and lead from a fan blade 3 for immediately following fan blade 6.
  • the webs 5 touch each other at their respective ends in the circumferential direction of the hub 2 and do not intersect. In this case, a web 5 starts approximately at the level of one of the edges of a fan blade 3 and ends approximately at the other edge of the fan blade third
  • FIG. 2 shows a fan 7, in which on the flat, annular hub 2 also approximately rectangular and planar webs 8 are arranged between the fan blades 3.9.
  • the individual webs 8 each lead from an edge of a fan blade 3 to the corresponding edge of the next but fan blade 9, wherein the webs
  • the web 8 terminating on a fan blade 3, 9 adjoins the further web 8, which of the same fan blade 3, 9 goes out, wherein between the two webs an angle is included.
  • a highly networked structure of the flat and rectangularly shaped webs 11 can be seen on the flat, annular hub 2, wherein in each case a web 11 extends from a fan blade 3 to the third closest fan blade 12.
  • a web starts at a front edge of a fan blade 3 and ends at the front edge of the third next fan blade 11, while the webs 11 cross over the extension of a web 11 4 times, the intersecting webs 11 thereby form a symmetrical structure.
  • the webs 11 are relatively close to the center, so brought to the axis of rotation of the fan 10 and ensure this sufficient rigidity.
  • FIG. 4 shows a further exemplary embodiment of the fan wheel 13, in which the flat and approximately rectangular webs 13 extend particularly close to the attachment points 4 of the viscous coupling, comprises eleven fan blades 3, which are stabilized by means of six straight webs 14 which do not intersect one another.
  • three webs extend along the half the circumference of the hub 2,
  • such a design can be combined with a classic ribbed principle of the hub 2,
  • Hub ramps can be provided or it can optionally optionally be dispensed with in the described solutions.

Abstract

The invention relates to a fan wheel, in particular for propelling cooling air for an internal combustion engine, comprising a hub (2) on which a plurality of fan blades (3, 6, 9, 12) is arranged and which includes a rib structure that extends peripherally and consists of substantially rectangular and flat ribs (5, 8, 11, 14) having an edge region; said ribs sit on the hub by the edge regions thereof and have a longitudinal direction that extends substantially tangentially to the circumferential direction of the hub (2), the ribs being in contact with one another.

Description

Lüfterrad  fan
Beschreibung description
Technisches Gebiet Technical area
Die Erfindung betrifft ein Lüfterrad, insbesondere zur Förderung von Kühlluft, insbesondere für eine Brennkraftmaschine, umfassend eine Nabe, an welcher eine Mehrzahl von Lüfterblättern angeordnet ist und wobei die Nabe eine Rippenstruktur aufweist. The invention relates to a fan, in particular for conveying cooling air, in particular for an internal combustion engine, comprising a hub on which a plurality of fan blades is arranged and wherein the hub has a rib structure.
Stand der Technik So genannte Viscolüfter zur Motorkühlung sind mittels einer Fluidreibungskupplung, einer so genannten Viscokuppiung, an der Kurbelwelle des Verbrennungsmotors befestigt und führen dem Verbrennungsmotor Luft zur Kühlung zu. Schwingungen des Verbrennungsmotors werden somit über die Kupplung auf den Lüfter übertragen. Der Lüfter erfährt somit starke Schwingungsanregungen in alle Richtungen, sowohl als axiale Verschiebungen aber auch in Form von Verkippungen. PRIOR ART So-called viscous fans for engine cooling are fastened to the crankshaft of the internal combustion engine by means of a fluid friction clutch, a so-called viscoconfiguration, and supply air to the internal combustion engine for cooling. Vibrations of the internal combustion engine are thus transmitted via the coupling to the fan. The fan thus experiences strong vibration excitations in all directions, both as axial displacements but also in the form of tilting.
Aus der DE 41 17 342 C1 ist ein Laufrad für einen halbaxial wirkenden Lüfter bekannt, welches eine Nabe aufweist, an der eine Mehrzahl von Lüfterblättern angeordnet ist. Die Nabe des Lüfters ist mit einer Nabenrampe versehen, welche an der Außenseite der Nabe ansteigend angeordnet ist. Die Nabe selbst ist mit Hohlräumen versehen, die durch radial verlaufende Stegteile gegeneinander abgetrennt sind. Bei dieser offenen. Nabenstruktur gehen die Lüfterblätter direkt in die flache Nabe über. From DE 41 17 342 C1 an impeller for a semi-axially acting fan is known which has a hub on which a plurality of fan blades is arranged. The hub of the fan is provided with a hub ramp, which is arranged rising on the outside of the hub. The hub itself is provided with cavities which are separated by radially extending web parts against each other. At this open. Hub structure, the fan blades go directly into the flat hub.
Die DE 100 05 857 A1 offenbart ein Flügelrad, insbesondere für einen Lüftersatz, bei welchem die Nabe eine im Wesentlichen ringförmige Wand umfasst, die auf die Umdrehungsachse des Flügelrades zentriert ist. Die Flügel sind mit einer umlaufenden Außenfläche verbunden, welche die ringförmige Wand der Nabe begrenzt. Die umfängliche Fläche umfasst dabei zwei Zonen, die axial durch die Flügel getrennt sind . DE 100 05 857 A1 discloses an impeller, in particular for a fan set, in which the hub comprises a substantially annular wall, which is centered on the axis of rotation of the impeller. The wings are connected to a circumferential outer surface bounding the annular wall of the hub. The circumferential surface comprises two zones which are separated axially by the wings.
Aus der US 6,375,427 B1 ist ein Lüfter zur Kühlung eines Verbrennungsmotors bekannt, welcher eine als Hilfsstruktur ausgebildete Nabenstruktur aufweist. Diese Nabenstruktur weist sowohl radial verlaufende als auch diagonal und gekreuzt verlaufende Stege auf, um die Stabilität des Lüfters zu erhöhen. US Pat. No. 6,375,427 B1 discloses a fan for cooling an internal combustion engine, which has a hub structure formed as an auxiliary structure. This hub structure has both radially extending as well as diagonal and crossed ridges in order to increase the stability of the fan.
Eine solche Nabenstruktur ist sehr aufwändig in der Herstellung und reicht nicht immer aus, um Vibrationen des Verbrennungsmotors auszugleichen, die eine starke Anregung in Kipp- und Biegerichtung des Lüfters hervorrufen. Such a hub structure is very complex to manufacture and is not always sufficient to compensate for vibrations of the internal combustion engine, which cause a strong excitation in the tilting and bending direction of the fan.
Darstellung der Erfindung, Aufgabe, Lösung. Vorteile Es ist die Aufgabe der Erfindung, ein Lüfterrad zur Förderung von Kühlluft, insbesondere für eine Brennkraftmaschine, zu schaffen, welches trotz konstruktiv einfachem Aufbau einen höheren Widerstand gegenüber einer Durchbiegung des Lüfterrades bietet. Presentation of the invention, task, solution. ADVANTAGES It is the object of the invention to provide a fan wheel for conveying cooling air, in particular for an internal combustion engine, which, despite its structurally simple design, offers a higher resistance to bending of the fan wheel.
Diese Aufgabe wird mit einem Lüfterrad mit den Merkmalen von Anspruch 1 gelöst. In einem Ausführungsbeispiel der Erfindung weist das Lüfterrad zur Förderung von Kühlluft, insbesondere für eine Brennkraftmaschine, eine Nabe auf, an welcher eine Mehrzahl von Lüfterblättern angeordnet ist, wobei die Nabe eine umlaufende Rippenstruktur aufweist. Bei einem' Lüfterrad, was konstruktiv einfach aufgebaut ist und trotzdem einen hohen Widerstand gegen Verkippen und Verbiegung des Lüfterrades aufweist, besteht die Rippenstruktur aus im Wesentlichen rechteckigen und eben ausgebildeten Rippen mit einem Randbereich, die mit ihrem Randbereich auf der Nabe aufsitzen und im Wesentlichen tangential zur Umfangsrichtung der Nabe in ihrer Längserstreckung ausgerichtet sind, wobei sie sich untereinander berühren. Dadurch erreichen die Rippen eine vorgegebene Länge, so dass diese ausreichend nah an einem Zentrum des Lüfterrades verlaufen. Dies hat den Vorteil, dass ein hoher Widerstand, insbesondere durch die lang ausgebildeten Rippen, gegen Durchbiegen des Lüfterrades erzeugt und dadurch die dynamische Festigkeit des Lüfters erhöht wird. Da die ebenen Rippen auf der flach ausgebildeten Nabe befestigt sind, entfällt eine aufwendige Nabenstruktur, Die umlaufende Rippe ist somit polygonal oder eckig ausgebildet, wobei damit bei sich kreuzenden Rippen insbesondere die radial außen liegende Außenkonfur der Rippenstruktur gemeint ist. This object is achieved with a fan with the features of claim 1. In one embodiment of the invention, the fan wheel for conveying cooling air, in particular for an internal combustion engine, on a hub on which a plurality of fan blades is arranged, wherein the hub has a circumferential rib structure. In a ' fan, which is structurally simple and yet has a high resistance to tilting and bending of the impeller, the rib structure consists of substantially rectangular and planar ribs with an edge region which sit with its edge region on the hub and substantially tangential are aligned to the circumferential direction of the hub in its longitudinal extent, wherein they touch each other. As a result, the ribs reach a predetermined length, so that they run sufficiently close to a center of the fan wheel. This has the advantage that a high resistance, in particular by the long-trained ribs, generated against bending of the fan wheel and thereby the dynamic strength of the fan is increased. Since the flat ribs are mounted on the flat hub trained, eliminates a complex hub structure, the circumferential rib is thus polygonal or angular, which is meant at intersecting ribs in particular the radially outer Außenkonfur the rib structure.
Vorteilhafterwetse verläuft jede eben ausgebildete Rippe von einem Lüfterblatt zu einem anderen Lüfterblatt. Durch diese Ausgestaltung erhalten die Rippen eine vorgegebene Länge, mittels welcher sie nah am Zentrum des Lüfterrades vorbeigeführt werden können. Advantageously, each newly formed rib extends from one fan blade to another fan blade. By means of this embodiment, the ribs are given a predetermined length, by means of which they can be guided past the center of the fan wheel.
In einer Ausgestaltung verläuft die eben ausgebildete Rippe von dem ersten Lüfterblatt zum unmittelbar daneben angeordneten Lüfterblatt. Um die Versteifung und Festigkeit des Lüfters weiter zu erhöhen, kann die gerade ausgebildete Rippe in einer Alternative vom ersten Lüfterblatt zum übernächsten Lüfterblatt verlaufen. Es ist aber auch vorstellbar, dass die eben ausgebildete Rippe von einem Lüfterblatt' zum drittnächsten Lüfterblatt verläuft. Durch die Kreuzung der eben ausgebildeten Rippen, die von den verschiedenen Lüfterblättern ausgehen und zu dem entsprechenden ersten, zweiten oder drittnächsten Lüfterblatt führen, wird die dynamische Festigkeit des Lüfters erhöht. In one embodiment, the newly formed rib extends from the first fan blade to the fan blade arranged directly next to it. To further increase the stiffening and strength of the fan, the straight trained rib run in an alternative from the first fan blade to the next fan blade. But it is also conceivable that the newly formed rib of a fan blade 'runs to the third next fan blade. By crossing the newly formed ribs that emanate from the various fan blades and lead to the corresponding first, second or third next fan blade, the dynamic strength of the fan is increased.
Um die Versteifung des Lüfters im Bereich der Befestigungspunkte einer Kupplung zu erhöhen, verlaufen die derart eben bzw. gerade ausgebildeten Rippen nahe an den Anschraubpunkten der Kupplung, ohne sich zu kreuzen, In order to increase the stiffening of the fan in the region of the attachment points of a coupling, the ribs, which are flat or straight in this way, run close to the attachment points of the coupling, without crossing each other.
Eine Weiterbildung der Erfindung betrifft einen Viscolüfter insbesondere zur Förderung einer Kühlluft für eine Brennkraftmaschine, umfassend ein Lüfterrad, welches über eine Viscokupplung mit einer Welle der Brennkraftmaschine verbunden ist. Das Lüfterrad dieser Viscokupplung weist dabei mindestens ein erfindungsgemäßes Merkmal auf. A development of the invention relates to a viscous fan, in particular for conveying a cooling air for an internal combustion engine, comprising a fan wheel, which is connected via a viscous coupling with a shaft of the internal combustion engine. The fan of this viscous coupling has at least one inventive feature.
Weitere vorteilhafte Ausgestaltungen sind durch die nachfolgende Figurenbeschreibung und durch die Unteransprüche beschrieben. Further advantageous embodiments are described by the following description of the figures and by the subclaims.
Kurze Beschreibung der Figuren der Zeichnung Brief description of the figures of the drawing
Nachstehend wird die Erfindung auf der Grundlage zumindest eines Ausführungsbeispiels anhand der Figuren der Zeichnung näher erläutert. Es zeigen: The invention will be explained in more detail on the basis of at least one embodiment with reference to the figures of the drawing. Show it:
Figur 1 ein erstes Ausführungsbeispiel des erfindungsgemäßen Figure 1 shows a first embodiment of the invention
Lüfterrades, Figur 2 ein zweites Ausführungsbeispiel des erfindungsgemäßen Lüfterrades, Fan wheel, FIG. 2 shows a second exemplary embodiment of the fan impeller according to the invention,
Figur 3 ein drittes Ausführungsbeispiel des erfindungsgemäßen Figure 3 shows a third embodiment of the invention
Lüfterrades, und  Fan wheel, and
Figur 4 ein viertes Ausführungsbeispiel des erfindungsgemäßen Figure 4 shows a fourth embodiment of the invention
Lüfterrades. Bevorzugte Ausführung der Erfindung  Fan wheel. Preferred embodiment of the invention
In Figur 1 ist ein erstes Ausführungsbeispiel des erfindungsgemäßen Lüfterrades 1 dargestellt, welches eine flache, ringförmige Nabe 2 aufweist, an der mehrere Lüfterblätter 3 angeordnet sind, die sich etwa in radialer Richtung nach außen erstrecken. Am radial inneren Rand der Nabe 2 sind die Befestigungspunkte 4 für eine nicht weiter dargestellte Viscokupplung gezeigt, an welcher das Lüfterrad 1 befestigbar ist und über welche das Lüfterrad 1 mit einer Welte eines Verbrennungsmotors verbindbar ist. Auf der flachen, ringförmigen Nabe 2 sind verschiedene Stege 5 befestigt, die eben und rechteckig ausgeführt sind und von einem Lüfterblatt 3 zum unmittelbar darauf nachfolgenden Lüfterblatt 6 führen. Die Stege 5 berühren sich dabei an ihren jeweiligen Enden in Umfangsrichtung der Nabe 2 und kreuzen sich nicht. Dabei beginnt ein Steg 5 etwa auf Höhe einer der Kanten eines Lüfterblatts 3 und endet etwa an der anderen Kante des Lüfterblatts 3. In Figure 1, a first embodiment of the fan impeller 1 according to the invention is shown, which has a flat, annular hub 2, on which a plurality of fan blades 3 are arranged, which extend approximately in the radial direction to the outside. At the radially inner edge of the hub 2, the attachment points 4 are shown for a viscous coupling, not shown, to which the fan 1 is fastened and via which the fan 1 is connectable to a world of an internal combustion engine. On the flat, annular hub 2 different webs 5 are fixed, which are flat and rectangular and lead from a fan blade 3 for immediately following fan blade 6. The webs 5 touch each other at their respective ends in the circumferential direction of the hub 2 and do not intersect. In this case, a web 5 starts approximately at the level of one of the edges of a fan blade 3 and ends approximately at the other edge of the fan blade third
Die Figur 2 zeigt ein Lüfterrad 7, bei welchem an der flachen, ringförmigen Nabe 2 ebenfalls etwa rechteckig und eben ausgebildete Stege 8 zwischen den Lüfterblättern 3,9 angeordnet sind. In dieser Ausgestaltung der Figur 2 führen die einzelnen Stege 8 von je einer Kante eines Lüfterblatts 3 zu der entsprechenden Kante des übernächsten Lüfterblatts 9, wobei sich die Stege 8 untereinander zweifach kreuzen, So führt der Steg 8, der an der Vorderkante des Lüfterblatts 3 beginnt, in Drehrichtung zur Vorderkante des übernächsten Lüfterblatts 9. Der an einem Lüfterblatt 3, 9 endende Steg 8 schließt dabei an den weiteren Steg 8 an, welcher von demselben Lüfterblatt 3, 9 ausgeht, wobei zwischen den beiden Stegen ein Winkel eingeschlossen wird. Durch diese Gestaltung, bei welcher von jedem Lüfterblatt 3 ein gerader Steg 8 zum übernächsten Lüfterblatt 9 führt, wird eine besonders stabile Struktur erreicht, welche die dynamische Festigkeit des Lüfterrades 6 gegen axiale Verschiebung und/oder Verkippen verhindert. Die Steifigkeit des Lüfterrades 7 wird somit erfindungsgemäß erhöht. 2 shows a fan 7, in which on the flat, annular hub 2 also approximately rectangular and planar webs 8 are arranged between the fan blades 3.9. In this embodiment of Figure 2, the individual webs 8 each lead from an edge of a fan blade 3 to the corresponding edge of the next but fan blade 9, wherein the webs The web 8, which begins at the front edge of the fan blade 3, leads in the direction of rotation to the front edge of the next fan blade 9. The web 8 terminating on a fan blade 3, 9 adjoins the further web 8, which of the same fan blade 3, 9 goes out, wherein between the two webs an angle is included. By this design, in which of each fan blade 3 a straight web 8 leads to the next fan blade 9, a particularly stable structure is achieved, which prevents the dynamic strength of the fan 6 against axial displacement and / or tilting. The rigidity of the fan wheel 7 is thus increased according to the invention.
Bei dem Lüfterrad 10, welches in Figur 3 dargestellt ist, ist auf der flachen, ringförmigen Nabe 2 eine hochvernetzte Struktur der ebenen und rechteckig ausgebildeten Stege 11 zu erkennen, wobei sich jeweils ein Steg 11 von einem Lüfterblatt 3 zu dem drittnächsten Lüfterblatt 12 erstreckt. Dabei startet ein Steg an einer Vorderkante eines Lüfterblatts 3 und endet an der Vorderkante des drittnächsten Lüfterblatts 11 , Dabei überkreuzen sich die Stege 11 entlang der Erstreckung eines Stegs 11 4-mal, wobei die sich kreuzenden Stege 11 dabei eine symmetrische Struktur bilden. Wittels einer solchen dargestellten komplexen Struktur werden die Stege 11 relativ nah an das Zentrum, also an die Drehachse, des Lüfterrades 10 herangeführt und gewährleisten diesem eine ausreichende Steifigkeit. In the fan 10, which is shown in Figure 3, a highly networked structure of the flat and rectangularly shaped webs 11 can be seen on the flat, annular hub 2, wherein in each case a web 11 extends from a fan blade 3 to the third closest fan blade 12. In this case, a web starts at a front edge of a fan blade 3 and ends at the front edge of the third next fan blade 11, while the webs 11 cross over the extension of a web 11 4 times, the intersecting webs 11 thereby form a symmetrical structure. Wittels such a complex structure shown, the webs 11 are relatively close to the center, so brought to the axis of rotation of the fan 10 and ensure this sufficient rigidity.
Die Figur 4 zeigt ein weiteres Ausführungsbeispiel des Lüfterrades 13, bei welchem die ebenen und etwa rechteckigen Stege 13 besonders nah an den Befestigungspunkten 4 der Viscokupplung verlaufen, umfasst elf Lüfterblätter 3, welche mittels sechs, sich nicht untereinander schneidenden geraden Stegen 14 stabilisiert sind. Dabei erstrecken sich drei Stege entlang des halben Umfangs der Nabe 2, Vorteilhafterweise lässt sich eine solche Ausbildung mit einem klassischen Rippenprinzip der Nabe 2 kombinieren, FIG. 4 shows a further exemplary embodiment of the fan wheel 13, in which the flat and approximately rectangular webs 13 extend particularly close to the attachment points 4 of the viscous coupling, comprises eleven fan blades 3, which are stabilized by means of six straight webs 14 which do not intersect one another. Here, three webs extend along the half the circumference of the hub 2, Advantageously, such a design can be combined with a classic ribbed principle of the hub 2,
Nabenrampen können vorgesehen sein oder es kann bei den beschriebenen Lösungen optional gegebenenfalls auch darauf verzichtet werden. Hub ramps can be provided or it can optionally optionally be dispensed with in the described solutions.
Die erfindungsgemäßen Gestaltungen können insbesondere auch bei Gestaltungen gemäß der DE 10 2010 042 325 A1 verwendet werden, deren Inhalt ausdrücklich zum Offenbarungsinhalt der vorliegenden Unterlagen gehört, The designs according to the invention can also be used in particular in designs according to DE 10 2010 042 325 A1, whose content is expressly part of the disclosure of the present documents,

Claims

Patentansprüche claims
Lüfterrad, insbesondere zur Förderung von Kühiluft für eine Brennkraftmaschine, umfassend eine Nabe (2), an welcher eine Mehrzahl von Lüfterblättern (3, 6, 9, 12) angeordnet ist und die Nabe (2) eine Rippenstruktur aufweist, dadurch gekennzeichnet, dass die Rippenstruktur umlaufend ausgebildet ist und aus im Wesentlichen rechteckigen und eben ausgebildeten Rippen (5, 8, 1 1 , 14) mit einem Randbereich besteht, die mit ihrem Randbereich auf der Nabe (2) aufsitzen und im Wesentlichen tangential zur Umfangsrichtung der Nabe (2) in ihrer Längserstreckung ausgerichtet sind, wobei sie sich untereinander berühren. Fan, in particular for conveying cooling air for an internal combustion engine, comprising a hub (2) on which a plurality of fan blades (3, 6, 9, 12) is arranged and the hub (2) has a rib structure, characterized in that Rib structure is formed circumferentially and consists of substantially rectangular and planar formed ribs (5, 8, 1 1, 14) with an edge region which sit with its edge region on the hub (2) and substantially tangential to the circumferential direction of the hub (2) are aligned in their longitudinal extent, wherein they touch each other.
Lüfterrad nach Anspruch 1 , dadurch gekennzeichnet, dass jede eben ausgebildete Rippe (5. 8, 1 1 , 14) von einem Lüfterblatt (3, 6, 9, 12) zu einem anderen Lüfterblatt (3, 6, 9, 2) verläuft. Fan wheel according to claim 1, characterized in that each newly formed rib (5. 8, 1 1, 14) of a fan blade (3, 6, 9, 12) to another fan blade (3, 6, 9, 2) extends.
Lüfterrad nach Anspruch 2, dadurch gekennzeichnet, dass die eben ausgebildete Rippe (5) von einem Lüfterblatt (3) zum unmittelbar daneben angeordneten Lüfterblatt (6) verläuft. Fan wheel according to claim 2, characterized in that the newly formed rib (5) extends from a fan blade (3) to the fan blade (6) arranged directly next to it.
Lüfterrad nach Anspruch 2, dadurch gekennzeichnet, dass die eben ausgebildete Rippe (8) von einem Lüfterblatt (3) zum übernächsten Lüfterblatt (9) verläuft. Fan wheel according to claim 2, characterized in that the newly formed rib (8) extends from a fan blade (3) to the next-but-one fan blade (9).
Lüfterrad nach Anspruch 2, dadurch gekennzeichnet, dass die eben ausgebildete Rippe (11 ) von einem Lüfterblatt (3) zum drittnächstenFan wheel according to claim 2, characterized in that the newly formed rib (11) of a fan blade (3) for the third next
Lüfterblatt (12) verläuft. Lüfterrad nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die gerade verlaufenden Rippen (14) nahe an Anschraubpunkten (4) einer Kupplung des Lüfters verlaufen, ohne sich zu kreuzen, Fan blade (12) runs. Fan wheel according to at least one of the preceding claims, characterized in that the straight ribs (14) run close to screw-on points (4) of a coupling of the fan, without crossing each other,
Viscolüfter zur Förderung einer Kühlluft, für eine Brennkraftmaschine, umfassend ein Lüfterrad, welches über eine Viscokupplung mit einer Welle der Brennkraftmaschine verbunden ist, dadurch gekennzeichnet, dass das Lüfterrad (1 , 7, 10, 13) nach mindestens einem der vorhergehenden Ansprüche ausgebildet ist. Viscooler for conveying a cooling air, for an internal combustion engine, comprising a fan wheel, which is connected via a viscous coupling with a shaft of the internal combustion engine, characterized in that the fan wheel (1, 7, 10, 13) is designed according to at least one of the preceding claims.
EP15759482.1A 2014-09-22 2015-09-09 Fan wheel Active EP3198150B1 (en)

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DE102014219046.0A DE102014219046A1 (en) 2014-09-22 2014-09-22 fan
PCT/EP2015/070629 WO2016045971A1 (en) 2014-09-22 2015-09-09 Fan wheel

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EP3198150B1 EP3198150B1 (en) 2020-03-18

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CN (1) CN106715917B (en)
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WO (1) WO2016045971A1 (en)

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JP2017530289A (en) 2017-10-12
EP3198150B1 (en) 2020-03-18
DE102014219046A1 (en) 2016-03-24
JP6654627B2 (en) 2020-02-26
CN106715917B (en) 2019-06-04
WO2016045971A1 (en) 2016-03-31
US20170175762A1 (en) 2017-06-22
CN106715917A (en) 2017-05-24
US10393136B2 (en) 2019-08-27

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