EP3743626A1 - Fan wheel driven in only one rotational direction - Google Patents

Fan wheel driven in only one rotational direction

Info

Publication number
EP3743626A1
EP3743626A1 EP19749176.4A EP19749176A EP3743626A1 EP 3743626 A1 EP3743626 A1 EP 3743626A1 EP 19749176 A EP19749176 A EP 19749176A EP 3743626 A1 EP3743626 A1 EP 3743626A1
Authority
EP
European Patent Office
Prior art keywords
fan wheel
fan
drive
hub
fan blades
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
EP19749176.4A
Other languages
German (de)
French (fr)
Other versions
EP3743626B1 (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
Original Assignee
IE Assets GmbH and Co KG
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 IE Assets GmbH and Co KG filed Critical IE Assets GmbH and Co KG
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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 in only one direction of rotation
  • Blade angles to the circumferential plane of the fan wheel are often complex, in particular with regard to the conversion of the fan blades in their fan angles to opposite conveying directions via an envelope plane lying transversely to the circumferential plane of the fan wheel.
  • the invention has for its object to show ways in which simplifications in this regard both with regard to the functional requirements and in terms of
  • One possibility according to the invention in this regard is, in particular, triggered by speed reduction of the Drive of the fan wheel up to the area of the interruption of the drive
  • the solution according to the invention can be implemented largely without additional effort and in particular also with customary measures, since controlling interventions on the drive of the
  • Direction of rotation of the fan wheel from the opposite to Direction of conveyance-oriented adjustment of the blade angle are dependent, whereby, 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 to the circumferential plane of the fan wheel
  • 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 almost without any control effort, but possibly in
  • the fan wheel is referred to a simplified one below
  • Fig. 1 is an end view of the fan wheel with the central, driven hub radial fan blades, each corresponding to the desired direction of conveyance to the circumferential plane of the fan wheel under one
  • Wing angles are employed and those in the rotational positions around their wing axes are opposite to theirs Are limited to the given end positions,
  • Fig. 2 is a schematic representation of the fan wheel in
  • Fig. 3 schematically and simplifies one of the cuts
  • Fan wheel to be driven a flowchart for the changeover of the radial fan blades mounted in its hub and rotatable about their radial wing axes to the hub in the opposite conveying direction, in which the fan blades are rotated about their wing axes for the changeover to the opposite conveying directions via an envelope plane perpendicular to the rotating plane of the fan wheel at which 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.
  • a fan wheel according to the invention is illustrated with respect to its most important components and designated 1 overall.
  • the fan wheel 1 has a hub 2 centrally, to which the circumferentially radially projecting the
  • Fan blades 3 are arranged.
  • the fan blades 3 are, as shown in FIG. 3, about their radial ones via wing pins 4 on the foot side Blade axes 5 are rotatably supported in the hub 2 and each by rotating them about a rotation plane 6 of the fan wheel 1
  • the drive 10 of the fan wheel preferably an electric motor, is arranged to support the hub 2.
  • Drive 10 can be rotated in relation to the hub 2 in a manner limited by stops.
  • pin-like stop elements 11 are provided in a cover part 13 of the hub 2, to which a bottom part 14 enclosing the drive 10 radially in the area of the wing pin 4 corresponds to the drive 10 on the end face, which engage in guideways 12 of the cover part 13 and thus the rotational play of the drive 10 for
  • Gear rim 15 is provided, which to the foot side
  • Wing pin 4 combs concentric pinions 16 and thereby establishes the drive connection of the drive 10 to the fan blades 3.
  • cam and / or eccentric drives is within the scope of the invention.
  • the fan blades 3 Due to the stop-limited rotatability of the hub 2 against the drive 10, the fan blades 3 are at the same level in the opposite conveying directions via the envelope level 9
  • the fan wheel 1 is to be used as a suction or blowing device, that is to say to operate in a suction operation, for example, in a suction mode or a blowing cleaning operation, when the fan blades 3 are switched to the fan blade 3 when the fan blade 3 swings through the envelope level 9 each opposite direction of conveyance. Regardless of the conveying direction, the fan blades 3 are each air-loaded on the same blade side, the front side 21, so that the same for suction and blowing operation
  • Cover level 9 is symbolized in the flow diagram according to FIG. 4 as a broken-line region of the steep drop in speed resulting from the reduction or interruption of the drive 10, which is due to the
  • this can in particular be a short-term operation, but for other purposes it can also be a continuous operation.
  • the fan wheel 1 can be switched back to the as
  • Suction mode assumed control work mode 22 are reset, as shown in FIG. 4, again depending on the speed of the drive speed. Now, however, in reverse of the previous process by increasing the speed, in particular sudden speed increase, which leads to the fan blades 3 turning over the change-over level 9 to a suction mode.
  • Such a redirection of the fan wheel 1 with respect to the conveying direction can also be carried out according to the invention
  • Adjustment options of the blade angle 7 of the fan blades 3 can be combined in relation to the amount of air conveyed, which opens up further possible uses.
  • thermocouples Manipulated variables using thermocouples
  • Shape memory materials and the like can also be expedient for the ring-shaped lying in the drive connection from the drive 10 to the fan blades 3
  • the invention thus creates a fan wheel 1 which can be driven in only one direction of rotation, in which the fan blades 3 have an envelope plane 9 perpendicular to their circumferential plane 6 by rotation of the fan wheel 1 due to inertia and by aerodynamic loading of their fan blades 3
  • opposite conveying directions can be changed, in particular overhanging to the handling level 9 as a neutral level.

Landscapes

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

Abstract

Disclosed is a fan wheel which can be driven in only one rotational direction and in which the fan blades can be flipped about a reversal plane extending perpendicularly to the plane of revolution by rotating the fan wheel under the effect of inertia and by subjecting the fan blades to aerodynamic forces such that the direction of propulsion of the fan blades is inverted.

Description

In nur einer Drehrichtung angetriebenes Lüfterrad  Fan wheel driven in only one direction of rotation
Die Erfindung betrifft ein in nur einer Drehrichtung The invention relates to in only one direction of rotation
angetriebenes Lüfterrad mit zur Lüfterradnabe radialen driven fan wheel with radial to the fan wheel hub
Lüfterflügeln, bei dem die Lüfterflügel, die zur Nabe Fan blades, in which the fan blades that go to the hub
antriebsverbunden um ihre Flügelachsen drehbar sind, in ihrem Flügelwinkel zur Umlaufebene des Lüfterrades angestellt und über eine zur Umlaufebene des Lüfterrades quer liegende are connected to the drive by means of their wing axes, are set in their wing angle to the circumferential plane of the fan wheel, and via a crosswise to the circumferential plane of the fan wheel
Umschlagebene in ihrem Flügelwinkel auf entgegengesetzte Cover plane in its wing angle to opposite
Förderrichtungen umzustellen sind. Funding directions are to be changed.
Solche Lüfterräder sind vielfach bekannt und insbesondere hinsichtlich der Verstellung ihrer Lüfterflügel in ihrem Such fan wheels are widely known and in particular with regard to the adjustment of their fan blades in their
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. Blade angles to the circumferential plane of the fan wheel are often complex, in particular with regard to the conversion of the fan blades in their fan angles to opposite conveying directions via an envelope plane lying transversely to the circumferential plane of the fan wheel.
Der Erfindung liegt die Aufgabe zugrunde Wege aufzuzeigen, wie sich diesbezüglich Vereinfachungen sowohl hinsichtlich der funktionalen Voraussetzungen wie auch hinsichtlich der The invention has for its object to show ways in which simplifications in this regard both with regard to the functional requirements and in terms of
Durchführung der Verstellung erreichen lassen. Allow adjustment to be carried out.
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 One possibility according to the invention in this regard is, in particular, triggered by speed reduction of the Drive of the fan wheel up to the area of the interruption of the drive
trägheitsbedingte, massekraftabhängige Rotation des Lüfterrades und/oder durch aerodynamische Beaufschlagung um ihre Inertia-related, inertia-dependent rotation of the fan wheel and / or by aerodynamic loading around it
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. Converting wing axes to opposite conveying directions. Swiveling movements of the fan blades over the envelope level can thus be initiated, supported and / or accelerated, with very short envelope times being achieved for the fan blades between corresponding blade angles corresponding to the opposite conveying directions.
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 By using existing functionalities, the solution according to the invention can be implemented largely without additional effort and in particular also with customary measures, since controlling interventions on the drive of the
Lüfterrades zum Üblichen gehören und die Nutzung von Fan wheel are common and the use of
Massekräften in Abhängigkeit von Drehzahländerungen des Mass forces depending on the speed changes of the
Antriebes ohne Zusatzaufwand möglich ist. Durch den Drive is possible without additional effort. By the
anschlagbegrenzten Freigang ist ferner eine zum in der Drehzahl reduzierten oder unterbrochenen Antrieb überschwingende, trägheitsbedingte Rotation des Lüfterrades möglich, die Stop-limited clearance is also possible for the fan wheel to overshoot in relation to the speed-reduced or interrupted drive, which causes inertia rotation
ergänzende Möglichkeiten der Einflussnahme auf die Einstellung des Flügelwinkels der Lüfterflügel um ihre Flügelachsen bietet, sowie ergänzend und/oder korrigierend auch unter offers additional options for influencing the setting of the blade angle of the fan blades around their blade axes, as well as supplementary and / or corrective also under
aerodynamischen Gesichtspunkten wünschenswert sein kann. aerodynamic considerations 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 The possibilities according to the invention for influencing the delivery behavior of the fan wheel and for corrections in the mode of operation which depend on the delivery behavior, such as, for example, switching from a suction operation of the fan wheel to a blowing operation, are achieved in the invention in particular via effects which have the same effect
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 Direction of rotation of the fan wheel from the opposite to Direction of conveyance-oriented adjustment of the blade angle are dependent, whereby, 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 to the circumferential plane of the fan wheel
senkrechte - bezogen auf die entgegengesetzten Förderrichtungen der Lüfterflügel neutrale - Umschlagebene in eine vertical - in relation to the opposite conveying directions of the fan blades neutral - envelope level in a
entgegengesetzte, blasende Förderrichtung umschlagend opposite, blowing direction of conveyance
umgestellt werden, von der aus die Lüfterflügel bei steigender Drehzahl des Antriebes und entgegengesetzter Drehung um from which the fan blades change as the speed of the drive increases and in the opposite direction
ihreFlügelachsen wieder in ihre saugende Ausgangslage their wing axes back to their absorbing starting position
einschwenken . swivel in.
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 In accordance with this sequence and the stop-limited clearance of the fan wheel for 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 almost without any control effort, but possibly in
Abhängigkeit von gewünschten Zusatzfunktionen wie etwa einer anderweitigen, von Druckbeaufschlagung abhängigen oder durch Druckbeaufschlagung erfolgenden Umschaltung zwischen Saug- und Blasbetrieb . Dependency on desired additional functions such as another switchover between suction and blowing operation which is dependent on pressurization or is effected by pressurization.
Insbesondere hinsichtlich der funktionalen Gegebenheiten wird nachfolgend das Lüfterrad bezogen auf einen vereinfachten In particular with regard to the functional conditions, the fan wheel is referred to a simplified one below
Grundaufbau mit weiteren Details anhand der Zeichnungen Basic structure with further details based on the drawings
erläutert. Diese zeigen, in explained. These show 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 Fig. 1 is an end view of the fan wheel with the central, driven hub radial fan blades, each corresponding to the desired direction of conveyance to the circumferential plane of the fan wheel under one
Flügelwinkel angestellt sind und die in den Drehlagen um ihre Flügelachsen auf die zu ihren entgegengesetzten Förderrichtungen gegebenen Endlagen anschlagbegrenzt sind, Wing angles are employed and those in the rotational positions around their wing axes are opposite to theirs Are limited to the given end positions,
Fig. 2 eine schematisierte Darstellung des Lüfterrades in Fig. 2 is a schematic representation of the fan wheel in
stirnseitiger Ansicht eines zur Umlaufebene des Lüfterrades unter einem Flügelwinkel angestellten  frontal view of an employed to the revolving plane of the fan wheel under a wing angle
Lüfterflügels ,  Fan blade,
Fig. 3 schematisiert und vereinfacht einen der Schnittführung Fig. 3 schematically and simplifies one of the cuts
III-III in Fig. 1 entsprechenden Schnitt des  III-III in Fig. 1 corresponding section of the
Lüfterrades, und  Fan wheel, and
Fig. 4 bezogen auf ein nur in einer Drehrichtung Fig. 4 based on only in one direction of rotation
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  Fan wheel to be driven, a flowchart for the changeover of the radial fan blades mounted in its hub and rotatable about their radial wing axes to the hub in the opposite conveying direction, in which the fan blades are rotated about their wing axes for the changeover to the opposite conveying directions via an envelope plane perpendicular to the rotating plane of the fan wheel at which the
Umstellung der Lüfterflügel auf die jeweils  Conversion of the fan blades to each
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.  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 1 and 3, a fan wheel according to the invention is illustrated with respect to its most important components and designated 1 overall. The fan wheel 1 has a hub 2 centrally, to which the circumferentially radially projecting the
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 Fan blades 3 are arranged. The fan blades 3 are, as shown in FIG. 3, about their radial ones via wing pins 4 on the foot side Blade axes 5 are rotatably supported in the hub 2 and each by rotating them about a rotation plane 6 of the fan wheel 1
senkrechte Umschlagebene 9 als Neutralebene auf vertical envelope level 9 as a neutral level
entgegengesetzte Förderrichtungen umstellbar. Die Drehrichtung des Lüfterrades 1 ist in Fig. 2 mit 19 angegeben, die opposite conveying directions changeable. The direction of rotation of the fan wheel 1 is indicated in Fig. 2 with 19, the
entsprechend dem jeweiligen Flügelwinkel 7 luftbeaufschlagte Frontseite des Lüfterflügels 5 mit 21 bezeichnet. corresponding to the respective wing angle 7 air-impinged front side of the fan blade 5 with 21.
Im Nabeninnenraum 8 ist der Antrieb 10 des Lüfterrades 1, bevorzugt ein E-Motor, zur Nabe 2 tragend angeordnet. Der 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
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 Drive 10 can be rotated in relation to the hub 2 in a manner limited by stops. To limit the stop, pin-like stop elements 11 are provided in a cover part 13 of the hub 2, to which a bottom part 14 enclosing the drive 10 radially in the area of the wing pin 4 corresponds to the drive 10 on the end face, which engage in guideways 12 of the cover part 13 and thus the rotational play of the drive 10 for
aufnehmenden Nabe 2 begrenzen. Zum Antrieb 10 ist bevorzugt stirnseitig angrenzend zum Deckelteil 13 ein ringförmiger limit receiving hub 2. For the drive 10 there is preferably an annular face adjacent to the cover part 13
Zahnkranz 15 vorgesehen, der mit zu den fußseitigen Gear rim 15 is provided, which to the foot side
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. Wing pin 4 combs concentric pinions 16 and thereby establishes the drive connection of the drive 10 to the fan blades 3. The use of cam 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 Due to the stop-limited rotatability of the hub 2 against the drive 10, the fan blades 3 are at the same level in the opposite conveying directions via the envelope level 9
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 Direction of rotation 19 of the fan wheel 1 can be changed. As a result, as illustrated in FIG. 4, the fan wheel 1 is to be used as a suction or blowing device, that is to say to operate in a suction operation, for example, in a suction mode or a blowing cleaning operation, when the fan blades 3 are switched to the fan blade 3 when the fan blade 3 swings through the envelope level 9 each opposite direction of conveyance. Regardless of the conveying direction, the fan blades 3 are each air-loaded on the same blade side, the front side 21, so that the same for suction and blowing operation
Arbeitsvoraussetzungen gegeben sind. Work requirements are given.
Erfindungsgemäß wird die Umstellung der Lüfterflügel 3 According to the invention, the conversion of the fan blades 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 triggered by a rapid reduction in the speed of the drive 10 with this lowering of the speed, correspondingly reduced aerodynamic loading of the fan blades 3 and in the case of the overhanging level 9
massekraftabhängigem Antrieb durch das Lüfterrad 1. Die Force driven by the fan wheel 1. The
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 Cover level 9 is symbolized in the flow diagram according to FIG. 4 as a broken-line region of the steep drop in speed resulting from the reduction or interruption of the drive 10, which is due to the
trägheitsbedingte Rotation des Lüfterrades 1 angetriebenen Verstellbereich der Lüfterflügel 3 korrespondiert. Inertia-related rotation of the fan wheel 1 driven adjustment range of the fan blades 3 corresponds.
Entsprechend der Umstellung der Lüfterflügel 3 im Bereich der Umschlagebene 9 von einem als Saugbetrieb angenommenen Corresponding to the conversion of the fan blades 3 in the area of the envelope level 9 from one assumed to be suction mode
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 Regular operation mode - indicated at 22 in FIG. 4 - after passing through the handling level 9, a blowing operation - indicated at 23 in FIG. 4 - is achieved. For example related to
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 For cleaning purposes, this can in particular be a short-term operation, but for other purposes it can also be a continuous operation. In both cases, the fan wheel 1 can be switched back to the as
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. Eine solche Umsteilbarkeit des Lüfterrades 1 bezüglich der Förderrichtung kann erfindungsgemäß auch mit Suction mode assumed control work mode 22 are reset, as shown in FIG. 4, again depending on the speed of the drive speed. Now, however, in reverse of the previous process by increasing the speed, in particular sudden speed increase, which leads to the fan blades 3 turning over the change-over level 9 to a suction mode. Such a redirection of the fan wheel 1 with respect to the conveying direction can also be carried out according to the invention
Verstellmöglichkeiten des Flügelwinkels 7 der Lüfterflügel 3 in Bezug auf die geförderte Luftmenge kombiniert werden, was weitere Einsatzmöglichkeiten eröffnet.  Adjustment options of the blade angle 7 of the fan blades 3 can be combined in relation to the amount of air conveyed, 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 In view of the different possible uses of the fan wheel 1, it can in particular also be expedient to vary the stop-limited rotation of the fan wheel hub 2 for the drive 10, for example as a function of thermal
Stellgrößen unter Verwendung von Thermoelementen, Manipulated variables using thermocouples,
Formgedächtnismaterialien und dergleichen. Zweckmäßig kann es diesbezüglich auch sein, das in der Antriebsverbindung vom Antrieb 10 zu den Lüfterflügeln 3 liegende ringförmige Shape memory materials and the like. In this regard, it can also be expedient for the ring-shaped lying in the drive connection from the drive 10 to the fan blades 3
Zahnkranzelement 15 in der Drehlage zum Antrieb 10 und/oder zur Nabe 2 zu verändern. To change ring gear element 15 in the rotational position 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 The invention thus creates a fan wheel 1 which can be driven in only one direction of rotation, in which the fan blades 3 have an envelope plane 9 perpendicular to their circumferential plane 6 by rotation of the fan wheel 1 due to inertia and by aerodynamic loading of their fan blades 3
entgegengesetzte Förderrichtungen umstellbar sind, insbesondere überschwingend zu der Umschlagebene 9 als einer Neutralebene. opposite conveying directions can be changed, in particular overhanging to the handling level 9 as a neutral level.

Claims

Patentansprüche claims
1. In nur einer Drehrichtung angetriebenes Lüfterrad (1) mit zum Antrieb (10) des Lüfterrades (1) anschlagbegrenzt 1. Fan wheel (1) driven in only one direction of rotation with limit stop for driving (10) the fan wheel (1)
verdrehbarer Nabe (2) des Lüfterrades (1), mit zur Nabe (2) des Lüfterrades (1) radialen Lüfterflügeln (3), bei dem die rotatable hub (2) of the fan wheel (1), with to the hub (2) of the fan wheel (1) radial fan blades (3), in which the
Lüfterflügel (3) zur Nabe (2) antriebsverbunden um ihre Fan blades (3) to the hub (2) are connected to their drives
Flügelachsen (5) drehbar sind und in ihrem Flügelwinkel (7) zur Umlaufebene (6) des Lüfterrades (1) angestellt sowie über eine zur Umlaufebene (6) des Lüfterrades (1) quer liegende Blade axes (5) are rotatable and set in their blade angle (7) to the circumferential plane (6) of the fan wheel (1) and via a crosswise to the circumferential plane (6) of the fan wheel (1)
Umschlagebene (9) in ihrem Flügelwinkel auf entgegengesetzte Förderrichtungen umzustellen sind, wobei die Lüfterflügel (3), o ausgelöst durch Reduktion der Antriebsdrehzahl des Turning plane (9) in their wing angle to opposite conveying directions, the fan blades (3), o triggered by reduction in the drive speed of the
Lüfterrades (1), in ihrem Flügelwinkel (7) zur  Fan wheel (1), in its wing angle (7)
Umschlagebene (9) durch trägheitsbedingte Rotation des Lüfterrades (1) zu verstellen sind,  Cover level (9) can be adjusted by rotating the fan wheel (1) due to inertia,
o durch aerodynamische Beaufschlagung auf entgegengesetzte Förderrichtungen umzustellen sind und  o are to be switched to opposite conveying directions by aerodynamic loading and
o im Bereich der Umschlagebene (6) zwischen ihren  o in the area of the envelope level (6) between their
entgegengesetzten Förderrichtungen durch  opposite conveying directions through
Drehzahlreduzierung bis in den Bereich der Unterbrechung des Antriebes (10) des Lüfterrades (1) bei  Speed reduction down to the area of the interruption of the drive (10) of the fan wheel (1)
überschwingender trägheitsbedingter Rotation des  excessive inertia rotation of the
Lüfterrades (1)  Fan wheel (1)
umzustellen sind. are to be converted.
2. In nur einer Drehrichtung angetriebenes Lüfterrad (1) nach Anspruch 1, 2. Fan wheel (1) driven in only one direction of rotation according to claim 1,
dadurch gekennzeichnet, characterized,
dass der Antrieb (10) zur Lüfterradnabe (2) elastisch that the drive (10) to the fan wheel hub (2) is elastic
anschlagbegrenzt verdrehbar ist. is rotatable to a limited extent.
3. In nur einer Drehrichtung angetriebenes Lüfterrad (1) nach Anspruch 1 oder 2, 3. Fan wheel (1) driven in only one direction of rotation according to claim 1 or 2,
dadurch gekennzeichnet, characterized,
dass der Antrieb (10) zur Lüfterradnabe (2) mittels wenigstens eines Thermoelementes anschlagbegrenzt verdrehbar abgestützt ist . that the drive (10) to the fan wheel hub (2) is rotatably supported by at least one thermocouple so as to be stop-limited.
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)

Application Number Priority Date Filing Date Title
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 true EP3743626A1 (en) 2020-12-02
EP3743626B1 EP3743626B1 (en) 2021-09-08

Family

ID=67539170

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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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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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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
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RU2124654C1 (en) * 1998-02-06 1999-01-10 Открытое акционерное общество Московский вентиляторный завод Axial fan impeller
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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
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DE102013008902B3 (en) * 2013-05-27 2014-08-28 Hägele GmbH Fan wheel arrangement with rotationally driven hub
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Also Published As

Publication number Publication date
CN111936750B (en) 2022-04-12
PL3743626T3 (en) 2022-01-31
DE102018114534A1 (en) 2019-12-19
EP3743626B1 (en) 2021-09-08
BR112020025836A2 (en) 2021-04-06
DE102018114534B4 (en) 2020-10-08
US20210164355A1 (en) 2021-06-03
CN111936750A (en) 2020-11-13
RU2741533C1 (en) 2021-01-26
WO2019242799A1 (en) 2019-12-26
ES2898347T3 (en) 2022-03-07

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