EP3743626B1 - Fan wheel driven in only one rotational direction - Google Patents

Fan wheel driven in only one rotational direction Download PDF

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Publication number
EP3743626B1
EP3743626B1 EP19749176.4A EP19749176A EP3743626B1 EP 3743626 B1 EP3743626 B1 EP 3743626B1 EP 19749176 A EP19749176 A EP 19749176A EP 3743626 B1 EP3743626 B1 EP 3743626B1
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EP
European Patent Office
Prior art keywords
fan wheel
fan
drive
fan blades
plane
Prior art date
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Application number
EP19749176.4A
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German (de)
French (fr)
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EP3743626A1 (en
Inventor
Karl Hägele
Markus Lechler
Samuel Arnold
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.)
IE Assets GmbH and Co KG
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IE Assets GmbH and Co KG
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Publication date
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Priority to PL19749176T priority Critical patent/PL3743626T3/en
Publication of EP3743626A1 publication Critical patent/EP3743626A1/en
Application granted granted Critical
Publication of EP3743626B1 publication Critical patent/EP3743626B1/en
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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
    • F04D29/34—Blade mountings
    • F04D29/36—Blade mountings adjustable
    • F04D29/362—Blade mountings adjustable during rotation
    • F04D29/366—Adjustment by interaction of inertion and lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D7/00—Rotors with blades adjustable in operation; Control thereof
    • F01D7/02—Rotors with blades adjustable in operation; Control thereof having adjustment responsive to speed
    • 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
    • F04D19/005—Axial flow fans reversible 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34—Blade mountings
    • F04D29/36—Blade mountings adjustable
    • 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
    • F04D29/38—Blades
    • F04D29/382—Flexible blades

Definitions

  • the invention relates to a fan wheel driven in only one direction of rotation with fan blades radial to the fan wheel hub, in which the fan blades, which are drive-connected to the hub and are rotatable about their blade axes, are positioned at their blade angle to the plane of rotation of the fan wheel and over a plane of rotation transverse to the plane of the fan wheel their wing angle are to be converted to opposite conveying directions.
  • Such fan wheels are widely known and, in particular with regard to the adjustment of their fan blades in their blade angle to the plane of rotation of the fan wheel, are often complex, in particular with regard to the conversion of the fan blades in their blade angle to opposite conveying directions via an envelope plane transverse to the plane of rotation of the fan wheel, as disclosed in DE102013008903B3 .
  • the invention is based on the object of showing ways in which simplifications can be achieved in this regard, both with regard to the functional requirements and with regard to the implementation of the adjustment.
  • One possibility according to the invention in this regard is, in particular, triggered by reducing the speed of the Drive of the fan wheel up to the area of the interruption of the drive, with stop-limited clearance of the fan wheel to drive the fan blades to the transfer level by inertia-related, inertial force-dependent rotation of the fan wheel and by aerodynamic loading in order to switch their blade axes to opposite conveying directions. Pivoting movements of the fan blades over the transition plane can thus be initiated, supported and / or accelerated, with very short transition times between opposite conveying directions corresponding blade angles being achieved for the fan blades.
  • the solution according to the invention can be implemented largely without additional effort, and this in particular with common measures, since controlling interventions on the drive of the fan wheel are common and the use of inertial forces depending on changes in the speed of the drive is possible without additional effort. Due to the stop-limited clearance, an inertia-induced rotation of the fan wheel that overshoots the drive with reduced or interrupted speed is also possible, which offers additional options for influencing the setting of the blade angle of the fan blades around their blade axes, as well as supplementing and / or correcting from an aerodynamic point of view may be desirable.
  • the possibilities of influencing the conveying behavior of the fan wheel according to the invention and the corrections in the mode of operation that are dependent on the conveying behavior, such as the changeover from a sucking working mode of the fan wheel to a blowing working mode, are achieved in the invention in particular via effects that occur with the same direction of rotation of the fan wheel from the opposite to the other
  • the setting of the vane angle oriented towards the conveying directions is dependent, starting from a suction operation and with the same direction of rotation of the fan wheel, the fan blades about their blade axes via a plane of transition that is perpendicular to the plane of rotation of the fan wheel - neutral in relation to the opposite conveying directions of the fan blades - into an opposite, blowing direction of conveyance from which the fan blades swivel back into their original suction position with increasing drive speed and opposite rotation around their blade axes.
  • the changeover of the fan wheel between suction and blowing operation can be initiated solely as a function of the change in the drive speed, and this with almost no control effort, but possibly depending on desired additional functions such as another, Switching between suction and blowing operation depending on pressurization or by pressurization.
  • a fan wheel according to the invention is illustrated with respect to its most essential components and denoted as a whole by 1.
  • the fan wheel 1 has a central hub 2, to which the fan blades 3 are arranged in a radially cantilevered manner.
  • the fan blades 3 are like Fig. 3 shows over the foot-side wing pin 4 around their radial Vane axles 5 rotatably mounted in the hub 2 and can be changed over to opposite conveying directions as a neutral plane by rotating around a plane 9 perpendicular to the plane of rotation 6 of the fan wheel 1 as a neutral plane.
  • the direction of rotation of the fan wheel 1 is in Fig. 2 indicated by 19, denoted by 21 the front side of the fan blade 5 acted upon by air corresponding to the respective blade angle 7.
  • the drive 10 of the fan wheel 1 preferably an electric motor, is arranged to support the hub 2.
  • the drive 10 can be rotated to the hub 2 with a limit stop.
  • pin-like stop elements 11 are provided at the end opposite the drive 10, which engage in guide tracks 12 of the cover part 13 and thus the rotational play of the drive 10 to the receiving hub 2.
  • annular toothed ring 15 is preferably provided on the front side adjacent to the cover part 13, which meshes with the pinions 16 concentric to the foot-side wing pin 4 and thereby establishes the drive connection of the drive 10 to the fan blades 3.
  • cam drives and / or eccentric drives is within the scope of the invention.
  • the fan blades 3 can be switched to opposite conveying directions via the transition plane 9 while the direction of rotation 19 of the fan wheel 1 remains the same.
  • Fig. 4 illustrates the use of the fan wheel 1 in a sucking or blowing manner, i.e. to operate it in a sucking cooling mode or a blowing cleaning mode, for example, when the fan blades 3 are switched to the respective opposite conveying direction.
  • the fan blades 3 are each exposed to air on the same blade side, the front side 21, so that the same working conditions are given for the suction and blowing operation.
  • the changeover of the fan blades 3 is triggered by a rapid reduction in the speed of the drive 10 with this reduction in speed, correspondingly reduced aerodynamic loading of the fan blades 3 and with the inertial force-dependent drive by the fan wheel 1 overshooting to the envelope level 9 Fig. 4 symbolized as a broken-line area of the section resulting from the reduction or interruption of the drive 10, which corresponds to the adjustment range of the fan blades 3 driven by the inertia-related rotation of the fan wheel 1.
  • a blowing operation - indicated in Fig. 4 at 23 - reached Corresponding to the conversion of the fan blades 3 in the area of the transition level 9 from a normal operation assumed as suction operation - indicated in FIG Fig. 4 at 22 - after passing through the envelope level 9 is a blowing operation - indicated in Fig. 4 at 23 - reached.
  • this can in particular be short-term operation, but for other purposes it can also be continuous operation.
  • the fan wheel 1 can be reset to the normal operating mode 22 assumed as suction mode, as Fig. 4 shows, again depending on the speed of the drive speed. Now, however, the reverse of the previous sequence by increasing the speed, in particular a sudden increase in speed, which leads to the fan blades 3 turning over the turning level 9 to suction mode.
  • Such a switchability of the fan wheel 1 with respect to the conveying direction can, according to the invention, also be combined with adjustment options for the blade angle 7 of the fan blades 3 with respect to the amount of air delivered, which opens up further possible uses.
  • the fan wheel 1 can also be particularly useful to vary the stop-limited rotation of the fan wheel hub 2 to the drive 10, for example as a function of thermal manipulated variables using thermocouples, shape memory materials and the like.
  • it can also be expedient to change the rotational position of the ring-shaped toothed ring element 15 located in the drive connection from the drive 10 to the fan blades 3 to the drive 10 and / or to the hub 2.
  • the invention thus creates a fan wheel 1 that can be driven in only one direction of rotation, in which the fan blades 3 can be switched to opposite conveying directions, in particular overswing, via an envelope plane 9 perpendicular to their circumferential plane 6 by inertia-related rotation of the fan wheel 1 and by aerodynamic loading of their fan blades 3 to the envelope level 9 as a neutral level.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft ein in nur einer Drehrichtung angetriebenes Lüfterrad mit zur Lüfterradnabe radialen Lüfterflügeln, bei dem die Lüfterflügel, die zur Nabe antriebsverbunden um ihre Flügelachsen drehbar sind, in ihrem Flügelwinkel zur Umlaufebene des Lüfterrades angestellt und über eine zur Umlaufebene des Lüfterrades quer liegende Umschlagebene in ihrem Flügelwinkel auf entgegengesetzte Förderrichtungen umzustellen sind.The invention relates to a fan wheel driven in only one direction of rotation with fan blades radial to the fan wheel hub, in which the fan blades, which are drive-connected to the hub and are rotatable about their blade axes, are positioned at their blade angle to the plane of rotation of the fan wheel and over a plane of rotation transverse to the plane of the fan wheel their wing angle are to be converted to opposite conveying directions.

Solche Lüfterräder sind vielfach bekannt und insbesondere hinsichtlich der Verstellung ihrer Lüfterflügel in ihrem Flügelwinkel zur Umlaufebene des Lüfterrades oft aufwändig, insbesondere bezüglich der Umstellung der Lüfterflügel in ihrem Flügelwinkel auf entgegengesetzte Förderrichtungen über eine zur Umlaufebene des Lüfterrades quer liegende Umschlagebene, wie offenbart in DE102013008903B3 .Such fan wheels are widely known and, in particular with regard to the adjustment of their fan blades in their blade angle to the plane of rotation of the fan wheel, are often complex, in particular with regard to the conversion of the fan blades in their blade angle to opposite conveying directions via an envelope plane transverse to the plane of rotation of the fan wheel, as disclosed in DE102013008903B3 .

Der Erfindung liegt die Aufgabe zugrunde Wege aufzuzeigen, wie sich diesbezüglich Vereinfachungen sowohl hinsichtlich der funktionalen Voraussetzungen wie auch hinsichtlich der Durchführung der Verstellung erreichen lassen.The invention is based on the object of showing ways in which simplifications can be achieved in this regard, both with regard to the functional requirements and with regard to the implementation of the adjustment.

Eine diesbezügliche erfindungsgemäße Möglichkeit besteht insbesondere darin, ausgelöst durch Drehzahlreduzierung des Antriebes des Lüfterrades bis in den Bereich der Unterbrechung des Antriebes, bei anschlagbegrenztem Freigang des Lüfterrades zum Antrieb die Lüfterflügel zur Umschlagebene durch trägheitsbedingte, massekraftabhängige Rotation des Lüfterrades und durch aerodynamische Beaufschlagung um ihre Flügelachsen auf entgegengesetzte Förderrichtungen umzustellen. Schwenkbewegungen der Lüfterflügel über die Umschlagebene können so eingeleitet, unterstützt und/oder beschleunigt werden, wobei für die Lüfterflügel sehr kurze Umschlagzeiten zwischen entgegengesetzten Förderrichtungen entsprechenden Flügelwinkeln erreicht werden.One possibility according to the invention in this regard is, in particular, triggered by reducing the speed of the Drive of the fan wheel up to the area of the interruption of the drive, with stop-limited clearance of the fan wheel to drive the fan blades to the transfer level by inertia-related, inertial force-dependent rotation of the fan wheel and by aerodynamic loading in order to switch their blade axes to opposite conveying directions. Pivoting movements of the fan blades over the transition plane can thus be initiated, supported and / or accelerated, with very short transition times between opposite conveying directions corresponding blade angles being achieved for the fan blades.

Durch den Rückgriff auf vorhandene Funktionalitäten lässt sich die erfindungsgemäße Lösung weitgehendst ohne Zusatzaufwand verwirklichen und dies insbesondere auch mit gebräuchlichen Maßnahmen, da steuernde Eingriffe auf den Antrieb des Lüfterrades zum Üblichen gehören und die Nutzung von Massekräften in Abhängigkeit von Drehzahländerungen des Antriebes ohne Zusatzaufwand möglich ist. Durch den anschlagbegrenzten Freigang ist ferner eine zum in der Drehzahl reduzierten oder unterbrochenen Antrieb überschwingende, trägheitsbedingte Rotation des Lüfterrades möglich, die ergänzende Möglichkeiten der Einflussnahme auf die Einstellung des Flügelwinkels der Lüfterflügel um ihre Flügelachsen bietet, sowie ergänzend und/oder korrigierend auch unter aerodynamischen Gesichtspunkten wünschenswert sein kann.By making use of existing functionalities, the solution according to the invention can be implemented largely without additional effort, and this in particular with common measures, since controlling interventions on the drive of the fan wheel are common and the use of inertial forces depending on changes in the speed of the drive is possible without additional effort. Due to the stop-limited clearance, an inertia-induced rotation of the fan wheel that overshoots the drive with reduced or interrupted speed is also possible, which offers additional options for influencing the setting of the blade angle of the fan blades around their blade axes, as well as supplementing and / or correcting from an aerodynamic point of view may be desirable.

Die erfindungsgemäß gegebenen Einflussmöglichkeiten auf das Förderverhalten des Lüfterrades und auf vom Förderverhalten abhängige Korrekturen in der Arbeitsweise, wie zum Beispiel die Umstellung von einem saugenden Arbeitsbetrieb des Lüfterrades auf einen blasenden Arbeitsbetrieb, werden bei der Erfindung insbesondere über Effekte erreicht, die bei gleicher Drehrichtung des Lüfterrades von der auf entgegengesetzte Förderrichtungen ausgerichteten Einstellung der Flügelwinkel abhängig sind, wobei, ausgehend von einem Saugbetrieb und bei gleicher Drehrichtung des Lüfterrades, die Lüfterflügel um ihre Flügelachsen über eine zur Umlaufebene des Lüfterrades senkrechte - bezogen auf die entgegengesetzten Förderrichtungen der Lüfterflügel neutrale - Umschlagebene in eine entgegengesetzte, blasende Förderrichtung umschlagend umgestellt werden, von der aus die Lüfterflügel bei steigender Drehzahl des Antriebes und entgegengesetzter Drehung um ihreFlügelachsen wieder in ihre saugende Ausgangslage einschwenken.The possibilities of influencing the conveying behavior of the fan wheel according to the invention and the corrections in the mode of operation that are dependent on the conveying behavior, such as the changeover from a sucking working mode of the fan wheel to a blowing working mode, are achieved in the invention in particular via effects that occur with the same direction of rotation of the fan wheel from the opposite to the other The setting of the vane angle oriented towards the conveying directions is dependent, starting from a suction operation and with the same direction of rotation of the fan wheel, the fan blades about their blade axes via a plane of transition that is perpendicular to the plane of rotation of the fan wheel - neutral in relation to the opposite conveying directions of the fan blades - into an opposite, blowing direction of conveyance from which the fan blades swivel back into their original suction position with increasing drive speed and opposite rotation around their blade axes.

Entsprechend diesem Ablauf und dem anschlagbegrenzten Freigang des Lüfterrades zum Antrieb kann allein in Abhängigkeit von der Änderung der Antriebsdrehzahl die Umstellung des Lüfterrades zwischen Saug- und Blasbetrieb eingeleitet werden, und dies nahezu ohne Steuerungsaufwand, gegebenenfalls aber in Abhängigkeit von gewünschten Zusatzfunktionen wie etwa einer anderweitigen, von Druckbeaufschlagung abhängigen oder durch Druckbeaufschlagung erfolgenden Umschaltung zwischen Saug- und Blasbetrieb.According to this sequence and the stop-limited clearance of the fan wheel to the drive, the changeover of the fan wheel between suction and blowing operation can be initiated solely as a function of the change in the drive speed, and this with almost no control effort, but possibly depending on desired additional functions such as another, Switching between suction and blowing operation depending on pressurization or by pressurization.

Insbesondere hinsichtlich der funktionalen Gegebenheiten wird nachfolgend das Lüfterrad bezogen auf einen vereinfachten Grundaufbau mit weiteren Details anhand der Zeichnungen erläutert. Diese zeigen, in

Fig. 1
eine stirnseitige Ansicht des Lüfterrades mit zu dessen zentraler, angetriebener Nabe radialen Lüfterflügeln, die jeweils entsprechend der gewünschten Förderrichtung zur Umlaufebene des Lüfterrades unter einem Flügelwinkel angestellt sind und die in den Drehlagen um ihre Flügelachsen auf die zu ihren entgegengesetzten Förderrichtungen gegebenen Endlagen anschlagbegrenzt sind,
Fig. 2
eine schematisierte Darstellung des Lüfterrades in stirnseitiger Ansicht eines zur Umlaufebene des Lüfterrades unter einem Flügelwinkel angestellten Lüfterflügels,
Fig. 3
schematisiert und vereinfacht einen der Schnittführung III-III in Fig. 1 entsprechenden Schnitt des Lüfterrades, und
Fig. 4
bezogen auf ein nur in einer Drehrichtung anzutreibendes Lüfterrad, eine Ablaufdarstellung für die Umstellung der in dessen Nabe gelagerten radialen und um ihre radialen Flügelachsen zur Nabe auf entgegengesetzte Förderrichtung drehbaren Lüfterflügel, bei der die Lüfterflügel für die Umstellung auf die entgegengesetzten Förderrichtungen über eine zur Umlaufebene des Lüfterrades senkrechte Umschlagebene um ihre Flügelachsen gedreht werden, bei der die Umstellung der Lüfterflügel auf die jeweils entgegengesetzte Förderrichtung durch Reduzierung der Drehzahl des Antriebs des Lüfterrades ausgelöst wird und bei der die Lüfterflügel durch die sich daraus ergebende trägheitsbedingte Rotation des Lüfterrades auf ihre Förderrichtung ausgerichtet werden.
In particular with regard to the functional conditions, the fan wheel is explained below with reference to a simplified basic structure with further details on the basis of the drawings. These show in
Fig. 1
an end view of the fan wheel with radial fan blades to its central, driven hub, which are each employed according to the desired conveying direction to the plane of rotation of the fan wheel at a blade angle and which in the rotational positions around their blade axes on the opposite to their Conveying directions given end positions are limited by a limit stop,
Fig. 2
a schematic representation of the fan wheel in a frontal view of a fan blade positioned at a blade angle to the plane of rotation of the fan wheel,
Fig. 3
schematizes and simplifies one of the section III-III in Fig. 1 corresponding section of the fan wheel, and
Fig. 4
based on a fan wheel that can only be driven in one direction of rotation, a sequence diagram for the changeover of the radial fan blades mounted in its hub and rotatable about their radial blade axes to the hub in the opposite conveying direction, in which the fan blades for the changeover to the opposite conveying directions via a plane to the plane of rotation of the Fan wheel's vertical plane of rotation around its blade axes, in which the changeover of the fan blades to the opposite conveying direction is triggered by reducing the speed of the drive of the fan wheel and in which the fan blades are aligned with their conveying direction by the resulting inertia-related rotation of the fan wheel.

In den Fig. 1 und 3 ist ein Lüfterrad gemäß der Erfindung bezüglich seiner wesentlichsten Bauteile veranschaulicht und insgesamt mit 1 bezeichnet. Das Lüfterrad 1 weist zentral eine Nabe 2 auf, zu der umfangsseitig radial auskragend die Lüfterflügel 3 angeordnet sind. Die Lüfterflügel 3 sind, wie Fig. 3 zeigt, über fußseitige Flügelzapfen 4 um ihre radialen Flügelachsen 5 drehbar in der Nabe 2 gelagert und jeweils durch Verdrehen um eine zur Umlaufebene 6 des Lüfterrades 1 senkrechte Umschlagebene 9 als Neutralebene auf entgegengesetzte Förderrichtungen umstellbar. Die Drehrichtung des Lüfterrades 1 ist in Fig. 2 mit 19 angegeben, die entsprechend dem jeweiligen Flügelwinkel 7 luftbeaufschlagte Frontseite des Lüfterflügels 5 mit 21 bezeichnet.In the Fig. 1 and 3 a fan wheel according to the invention is illustrated with respect to its most essential components and denoted as a whole by 1. The fan wheel 1 has a central hub 2, to which the fan blades 3 are arranged in a radially cantilevered manner. The fan blades 3 are like Fig. 3 shows over the foot-side wing pin 4 around their radial Vane axles 5 rotatably mounted in the hub 2 and can be changed over to opposite conveying directions as a neutral plane by rotating around a plane 9 perpendicular to the plane of rotation 6 of the fan wheel 1 as a neutral plane. The direction of rotation of the fan wheel 1 is in Fig. 2 indicated by 19, denoted by 21 the front side of the fan blade 5 acted upon by air corresponding to the respective blade angle 7.

Im Nabeninnenraum 8 ist der Antrieb 10 des Lüfterrades 1, bevorzugt ein E-Motor, zur Nabe 2 tragend angeordnet. Der Antrieb 10 ist zur Nabe 2 anschlagbegrenzt verdrehbar. Zur Anschlagbegrenzung sind in einem Deckelteil 13 der Nabe 2, zu dem ein den Antrieb 10 radial im Bereich der Flügelzapfen 4 umschließendes Bodenteil 14 korrespondiert, zum Antrieb 10 stirnseitig gegenüberliegend stiftartige Anschlagelemente 11 vorgesehen, die in Führungsbahnen 12 des Deckelteiles 13 eingreifen und so das Drehspiel des Antriebes 10 zur aufnehmenden Nabe 2 begrenzen. Zum Antrieb 10 ist bevorzugt stirnseitig angrenzend zum Deckelteil 13 ein ringförmiger Zahnkranz 15 vorgesehen, der mit zu den fußseitigen Flügelzapfen 4 konzentrischen Ritzeln 16 kämmt und dadurch die Antriebsverbindung des Antriebes 10 zu den Lüfterflügeln 3 herstellt. Die Verwendung von Nocken- und/oder Exzentertrieben liegt im Rahmen der Erfindung.In the interior of the hub 8, the drive 10 of the fan wheel 1, preferably an electric motor, is arranged to support the hub 2. The drive 10 can be rotated to the hub 2 with a limit stop. To limit the stop, in a cover part 13 of the hub 2, to which a base part 14 enclosing the drive 10 radially in the area of the wing pin 4 corresponds, pin-like stop elements 11 are provided at the end opposite the drive 10, which engage in guide tracks 12 of the cover part 13 and thus the rotational play of the drive 10 to the receiving hub 2. For the drive 10, an annular toothed ring 15 is preferably provided on the front side adjacent to the cover part 13, which meshes with the pinions 16 concentric to the foot-side wing pin 4 and thereby establishes the drive connection of the drive 10 to the fan blades 3. The use of cam drives and / or eccentric drives is within the scope of the invention.

Durch die anschlagbegrenzte Verdrehbarkeit der Nabe 2 gegen den Antrieb 10 sind die Lüfterflügel 3 über die Umschlagebene 9 auf entgegengesetzte Förderrichtungen bei gleichbleibender Drehrichtung 19 des Lüfterrades 1 umstellbar. Dadurch ist, wie in Fig. 4 veranschaulicht, das Lüfterrad 1 saugend oder blasend einzusetzen, also in einem zum Beispiel saugenden Kühlbetrieb oder einem blasenden Reinigungsbetrieb zu betreiben, bei mit dem Durchschwenken der Lüfterflügel 3 durch die Umschlagebene 9 verbundener Umstellung der Lüfterflügel 3 auf die jeweils entgegengesetzte Förderrichtung. Unabhängig von der Förderrichtung sind die Lüfterflügel 3 dabei jeweils auf der gleichen Flügelseite, der Frontseite 21 luftbeaufschlagt, so dass für den Saug- und Blasbetrieb gleiche Arbeitsvoraussetzungen gegeben sind.As a result of the stop-limited rotatability of the hub 2 relative to the drive 10, the fan blades 3 can be switched to opposite conveying directions via the transition plane 9 while the direction of rotation 19 of the fan wheel 1 remains the same. As a result, as in Fig. 4 illustrates the use of the fan wheel 1 in a sucking or blowing manner, i.e. to operate it in a sucking cooling mode or a blowing cleaning mode, for example, when the fan blades 3 are switched to the respective opposite conveying direction. Regardless of the conveying direction, the fan blades 3 are each exposed to air on the same blade side, the front side 21, so that the same working conditions are given for the suction and blowing operation.

Erfindungsgemäß wird die Umstellung der Lüfterflügel 3 ausgelöst durch eine schnelle Reduzierung der Drehzahl des Antriebes 10 bei dieser Drehzahlabsenkung entsprechender verminderter aerodynamischer Beaufschlagung der Lüfterflügel 3 und bei zur Umschlagebene 9 überschwingendem massekraftabhängigem Antrieb durch das Lüfterrad 1. Die Umschlagebene 9 ist in der Ablaufdarstellung gemäß Fig. 4 als strichliert eingegrenzter Bereich des durch Reduzierung oder Unterbrechung des Antriebes 10 sich ergebenden Abschnittes steilen Drehzahlabfalls symbolisiert, der zu dem durch trägheitsbedingte Rotation des Lüfterrades 1 angetriebenen Verstellbereich der Lüfterflügel 3 korrespondiert.According to the invention, the changeover of the fan blades 3 is triggered by a rapid reduction in the speed of the drive 10 with this reduction in speed, correspondingly reduced aerodynamic loading of the fan blades 3 and with the inertial force-dependent drive by the fan wheel 1 overshooting to the envelope level 9 Fig. 4 symbolized as a broken-line area of the section resulting from the reduction or interruption of the drive 10, which corresponds to the adjustment range of the fan blades 3 driven by the inertia-related rotation of the fan wheel 1.

Entsprechend der Umstellung der Lüfterflügel 3 im Bereich der Umschlagebene 9 von einem als Saugbetrieb angenommenen Regelarbeitsbetrieb - angedeutet in Fig. 4 bei 22 - ist nach Durchfahren der Umschlagebene 9 ein Blasbetrieb - angedeutet in Fig. 4 bei 23 - erreicht. Bezogen zum Beispiel auf Reinigungszwecke kann dies insbesondere ein Kurzzeitbetrieb sein, bei anderen Einsatzzwecken aber auch ein Dauerbetrieb. In beiden Fällen kann das Lüfterrad 1 wieder auf den als Saugbetrieb angenommenen Regelarbeitsbetrieb 22 zurückgestellt werden, wie Fig. 4 zeigt, wiederum drehzahlabhängig von der Antriebsdrehzahl. Nunmehr aber in Umkehrung des bisherigen Ablaufes durch Drehzahlerhöhung, insbesondere schlagartige Drehzahlerhöhung, die zum Umschlagen der Lüfterflügel 3 über die Umschlagebene 9 auf einen Saugbetrieb führt.Corresponding to the conversion of the fan blades 3 in the area of the transition level 9 from a normal operation assumed as suction operation - indicated in FIG Fig. 4 at 22 - after passing through the envelope level 9 is a blowing operation - indicated in Fig. 4 at 23 - reached. In relation to cleaning purposes, for example, this can in particular be short-term operation, but for other purposes it can also be continuous operation. In both cases, the fan wheel 1 can be reset to the normal operating mode 22 assumed as suction mode, as Fig. 4 shows, again depending on the speed of the drive speed. Now, however, the reverse of the previous sequence by increasing the speed, in particular a sudden increase in speed, which leads to the fan blades 3 turning over the turning level 9 to suction mode.

Eine solche Umstellbarkeit des Lüfterrades 1 bezüglich der Förderrichtung kann erfindungsgemäß auch mit Verstellmöglichkeiten des Flügelwinkels 7 der Lüfterflügel 3 in Bezug auf die geförderte Luftmenge kombiniert werden, was weitere Einsatzmöglichkeiten eröffnet.Such a switchability of the fan wheel 1 with respect to the conveying direction can, according to the invention, also be combined with adjustment options for the blade angle 7 of the fan blades 3 with respect to the amount of air delivered, which opens up further possible uses.

Im Hinblick auf die unterschiedlichen Einsatzmöglichkeiten des Lüfterrades 1 kann es insbesondere auch zweckmäßig sein, die anschlagbegrenzte Drehung der Lüfterradnabe 2 zum Antrieb 10 zu variieren, zum Beispiel in Abhängigkeit von thermischen Stellgrößen unter Verwendung von Thermoelementen, Formgedächtnismaterialien und dergleichen. Zweckmäßig kann es diesbezüglich auch sein, das in der Antriebsverbindung vom Antrieb 10 zu den Lüfterflügeln 3 liegende ringförmige Zahnkranzelement 15 in der Drehlage zum Antrieb 10 und/oder zur Nabe 2 zu verändern.With regard to the different possible uses of the fan wheel 1, it can also be particularly useful to vary the stop-limited rotation of the fan wheel hub 2 to the drive 10, for example as a function of thermal manipulated variables using thermocouples, shape memory materials and the like. In this regard, it can also be expedient to change the rotational position of the ring-shaped toothed ring element 15 located in the drive connection from the drive 10 to the fan blades 3 to the drive 10 and / or to the hub 2.

Durch die Erfindung wird somit ein in nur einer Drehrichtung antreibbares Lüfterrad 1 geschaffen, bei dem die Lüfterflügel 3 über eine zu ihrer Umlaufebene 6 senkrechte Umschlagebene 9 durch trägheitsbedingte Rotation des Lüfterrades 1 sowie durch aerodynamische Beaufschlagung ihrer Lüfterflügel 3 auf entgegengesetzte Förderrichtungen umstellbar sind, insbesondere überschwingend zu der Umschlagebene 9 als einer Neutralebene.The invention thus creates a fan wheel 1 that can be driven in only one direction of rotation, in which the fan blades 3 can be switched to opposite conveying directions, in particular overswing, via an envelope plane 9 perpendicular to their circumferential plane 6 by inertia-related rotation of the fan wheel 1 and by aerodynamic loading of their fan blades 3 to the envelope level 9 as a neutral level.

Claims (3)

  1. Fan wheel (1), driven in only one rotational direction, having a hub (2) of the fan wheel (1) that for the drive (10) of the fan wheel (1) is rotatable so as to be delimited by a detent, having fan blades (3) which are radial in relation to the hub (2) of the fan wheel (1), in which the fan blades (3), while operatively connected to the hub (2) for driving, are rotatable about the blade axes (5) of said fan blades (3), and said fan blades (3) in terms of the blade angle (7) thereof set in relation to the revolving plane (6) of the fan wheel (1) are able to be switched to opposite conveying directions, as well as by way of a switchover plane (9) that lies transversely to the revolving plane (6) of the fan wheel (1) are able to be switched, in terms of the blade angle of said fan blades (2), to opposite conveying directions, characterized in that the fan blades (3)
    - initiated by a reduction in the input speed of the fan wheel (1), in terms of the blade angle (7) of said fan blades (3) in relation to the switchover plane (9) are to be adjusted as a result of an inertia-related rotation of the fan wheel (1) in the detent-delimited free travel of the fan wheel for the drive;
    - are to be switched to opposite conveying directions by aerodynamic impingement; and
    - in the region of the switchover plane (6) are able to be switched between the opposite conveying directions of said fan blades (3) by reducing the rotating speed down to the range of the interruption of the drive (10) of the fan wheel (1) during an overshooting inertia-related rotation of the fan wheel (1).
  2. Fan wheel (1), driven in only one rotational direction, according to Claim 1, characterized in that the drive (10) in relation to the fan wheel hub (2) is rotatable so as to be elastically delimited by a detent.
  3. Fan wheel (1), driven in only one rotational direction, according to Claim 1 or 2, characterized in that the drive (10) by means of at least one thermocouple is supported in relation to the fan wheel hub (2) in a manner rotatable so as to be delimited by a detent.
EP19749176.4A 2018-06-18 2019-05-31 Fan wheel driven in only one rotational direction Active EP3743626B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19749176T PL3743626T3 (en) 2018-06-18 2019-05-31 Fan wheel driven in only one rotational direction

Applications Claiming Priority (2)

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DE102018114534.9A DE102018114534B4 (en) 2018-06-18 2018-06-18 Fan wheel driven in only one direction of rotation
PCT/DE2019/100480 WO2019242799A1 (en) 2018-06-18 2019-05-31 Fan wheel driven in only one rotational direction

Publications (2)

Publication Number Publication Date
EP3743626A1 EP3743626A1 (en) 2020-12-02
EP3743626B1 true EP3743626B1 (en) 2021-09-08

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US (1) US20210164355A1 (en)
EP (1) EP3743626B1 (en)
CN (1) CN111936750B (en)
BR (1) BR112020025836A2 (en)
DE (1) DE102018114534B4 (en)
ES (1) ES2898347T3 (en)
PL (1) PL3743626T3 (en)
RU (1) RU2741533C1 (en)
WO (1) WO2019242799A1 (en)

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DE102019134887A1 (en) * 2019-12-18 2021-06-24 Ie Assets Gmbh & Co. Kg Fan wheel
DE102022211937B3 (en) 2022-11-10 2024-01-04 Ie Assets Gmbh & Co. Kg Fan blades with rotary bearing and fan wheel

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE433108B (en) * 1977-05-17 1984-05-07 Flaekt Ab AXIAL SPOT WITH A SPEED WHEEL WITH ADJUSTABLE SHOOTERS
JPS59185898A (en) * 1983-04-08 1984-10-22 Aisin Seiki Co Ltd Fan blade
CN2171024Y (en) * 1992-09-28 1994-07-06 中国船舶工业总公司第七研究院第七○三研究所 Rotating mechanism of moving vane
CN2143269Y (en) * 1992-09-28 1993-10-06 中国船舶工业总公司第七研究院第七○三研究所 Paddle angle turning mechanism of ventilator
RU2124654C1 (en) * 1998-02-06 1999-01-10 Открытое акционерное общество Московский вентиляторный завод Axial fan impeller
EP0945626B1 (en) * 1998-03-26 2004-12-08 Hägele GmbH A fan, in particular for a cooling system of combustion engines
CN201318323Y (en) * 2008-11-11 2009-09-30 漳州灿坤实业有限公司 Fan capable of regulating blade angle
DE102008054497A1 (en) * 2008-12-10 2010-06-17 BSH Bosch und Siemens Hausgeräte GmbH Impeller for a fan
DE102010034604A1 (en) * 2010-08-13 2012-02-16 Ziehl-Abegg Ag Impeller for a fan
DE102011001426A1 (en) * 2011-03-21 2012-09-27 Hägele GmbH Internal combustion engine adjusts angular position of wings corresponding to current axial position of piston based on reference value so that air flow from fan corresponds to target cooling speed required for engine
US8807939B2 (en) * 2011-06-15 2014-08-19 General Electric Company System for adjusting characteristics of a fan
DE102013008902B3 (en) * 2013-05-27 2014-08-28 Hägele GmbH Fan wheel arrangement with rotationally driven hub
CN107503983A (en) * 2017-08-29 2017-12-22 龙口中宇热管理系统科技有限公司 A kind of Multiblade variable-angle fan

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DE102018114534A1 (en) 2019-12-19
CN111936750B (en) 2022-04-12
CN111936750A (en) 2020-11-13
DE102018114534B4 (en) 2020-10-08
RU2741533C1 (en) 2021-01-26
US20210164355A1 (en) 2021-06-03
PL3743626T3 (en) 2022-01-31
EP3743626A1 (en) 2020-12-02
WO2019242799A1 (en) 2019-12-26
BR112020025836A2 (en) 2021-04-06
ES2898347T3 (en) 2022-03-07

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