EP4055276A1 - Fan wheel - Google Patents
Fan wheelInfo
- Publication number
- EP4055276A1 EP4055276A1 EP20804439.6A EP20804439A EP4055276A1 EP 4055276 A1 EP4055276 A1 EP 4055276A1 EP 20804439 A EP20804439 A EP 20804439A EP 4055276 A1 EP4055276 A1 EP 4055276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- hub
- fan wheel
- fan
- 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
Links
Classifications
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- 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
- F04D29/364—The blades having only a predetermined number of possible positions
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/028—Units comprising pumps and their driving means the driving means being a planetary gear
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/40—Transmission of power
- F05D2260/403—Transmission of power through the shape of the drive components
- F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
- F05D2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclical, planetary or differential type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
Definitions
- Fan wheels which have fan blades projecting radially towards their hub and are used primarily for the purposes of cooling and cleaning heat exchanger surfaces by means of the air flow generated by the fan wheel are known.
- a rotatable mounting in the hub of the radial fan blades which can be rotated about their blade axes, also enables the size and / or conveying direction of the respective blade to be influenced by changing the respective blade angle Conveying currents, so that regardless of the change in power and / or the drive speed of the associated drive unit, varied on the strength and / or direction of the conveyed air flow up to the reversal of the conveying direction to opposite directions, for example from blowing to suction in relation to a respective impact surface of a cooling surface, influence can be taken.
- a driven fan wheel as a fan wheel that can be driven in opposite directions of rotation with a hub that can be rotated coaxially to its central drive and that can be adjusted between stop positions for drive with rotational play and with radial and - in the area between the stop positions of the hub to the drive - fan blades which can be rotated about their blade axes and adjustable in their blade angle via a gear support for the drive.
- a driven fan wheel with central support via a central hub for the fan blades that are radial to the hub, rotatably guided around their blade axes and adjustable in their blade angle, one to the fan blades foot-side, to the central axis of rotation of the Fan wheel concentric adjusting ring, which is connected to the fan blades via gear supports and which has superimposed drive connections to the fan wheel, one of which, as the first drive train, limits the angle of rotation of the fan wheel to the hub by stops in the way and the other, as a second drive train within the stop-limited adjustment range of the first drive train is formed by a rotational support which is unlimited in the rotational path.
- a guide pin for the fan wheel.
- a guide pin is expediently designed as an axial extension of the drive-side drive, for example for the output of a drive unit, so that good prerequisites are given for the design of a load-bearing connection of a drive unit or its output to the fan wheel as a plug connection.
- 1 shows an end view of a central fan wheel, supported to form a drive and connected to the drive, with fan blades radial to the hub thereof, which are connected to the drive so as to be rotatable about their blade axes relative to the hub
- 2 shows a central section AA through the fan wheel with its central hub
- the fan wheel is designated as a whole in the drawings with 1 and has radial fan blades 2, which are mounted in the central hub 4 which is rotatable about the axis of rotation 3 of the fan wheel 1.
- the fan wheel 1 is supported centrally to the axis of rotation 3 on a guide pin 6 as part of a flange connection 7 of the fan wheel 1 to a drive 8, in particular a drive unit or, in a corresponding manner, to a drive shaft.
- the hub 4 receives a central adjusting ring 10 which is rotatably supported on the guide pin 6 via a bearing ring 9 and to which the fan blades 2 are in radial engagement via their foot-side ends 11 and via a gear support 12 are connected, which is formed on the part of the foot-side end 11 by a bevel pinion 13 which is in engagement with an annular tooth path 14 on the part of the adjusting ring 10, corresponding to an angular drive formed by pinion and ring gear.
- the drive connection of the fan wheel 1 to the drive unit 8 running via the hub 4 is formed with respect to the rotational position of the fan wheel 1 and the angle of rotation of the fan blades 2 guided in the hub 4 around their blade axes 5 related to a respective rotational position of the fan wheel 1 by two drive trains working superimposed on one another .
- the first drive train works to adjust the rotation of the fan wheel 1 driven by the drive unit 8 to a predetermined angle of rotation with limit stop and clearance
- the second drive train which works superimposed on this, based on a rotational position of the fan wheel 1 relative to the drive 8, which is within the stop limits determining the respective rotational position of the fan blades 1 about their blade axes 5 in the blade angle. In this way, the blade angle of the fan blades 2 is adjusted from the second drive train to be superimposed on the first drive train.
- the second drive train operates within the free range of the first drive train, forming a drive connection 17 overall as a rotary support of the adjusting ring 10 to the drive 8.
- This rotary support is as a freely running, freely running over the adjustment range of the adjusting ring 10 to the drive unit 8, not limited in the adjustment path
- the ring gear 23 surrounding the planet carrier 19 is supported in a fixed position on the hub 4 and rotates with it.
- the adjusting ring 10 is controlled in its rotatability to the drive unit 8 via the planetary drive 18 with regard to the setting of the blade angle of the fan blades 2, so that when the planetary drive 18 is fixed, the rotational position of the fan blades 2 about their wing axes 5 in the respective free range of the adjusting ring 10 remains unchanged.
- a fixation of the rotational position of the planetary drive 18 also enables the fan wheel 1 to be controlled in accordance with the delivery rate required in each case within the scope of the invention.
- a control device 25 which detects the rotational position of the hub 4 of the fan wheel 1 and optionally also fixes it is expedient in some cases.
- This can be formed by a scannable wheel that is non-rotatable with respect to the hub 4, for example a ribbed wheel 26 or the like, via which the rotational position of the corresponding thereto Fan blade 2 can be detected by means of an optical or mechanical scanning device, for example by means of a rocker fixed in position relative to the drive unit 8, and can be converted into control signals for the air flow rate.
- such a scanning device can also be used as an active adjusting device, for example in the form of a rocker switch for setting the fan wheel to the required flow rates of the fan wheel 1, in order to use the mentioned scanning and / or adjusting device 27 to move to and / or to corresponding locking points set these corresponding blade positions of the fan wheel. If necessary, this can also be used for remote control.
- a fan wheel is created with a gear connection with an adjusting ring of a driven hub and in the hub rotatable about their blade axes fan blades as well as setting the fan blades in their blade angle via superimposed drive connections to the adjusting ring starting from the drive of the fan wheel, the fan wheel occasionally is provided with a rotatably connected adjusting and / or scanning device for the vane angle, which engages and / or taps off the hub.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Lüfterrad Fan wheel
Lüfterräder, die zu ihrer Nabe radial auskragende Lüfterflügel aufweisen und vor allem zu Zwecken der Kühlung und Reinigung von Wärmetauscherflächen mittels des jeweils über das Lüfterrad erzeugten Luftstromes eingesetzt sind, sind bekannt. Fan wheels which have fan blades projecting radially towards their hub and are used primarily for the purposes of cooling and cleaning heat exchanger surfaces by means of the air flow generated by the fan wheel are known.
Dies bei Ausgestaltungen, die hierzu durch Umkehr der Antriebsdrehrichtung auf entgegengesetzte Förderrichtungen umstellbar sind, aber auch bei Ausgestaltungen, die, gegebenenfalls kombiniert hierzu, durch Umstellung der in der Nabe um ihre radialen Flügelachsen drehbar geführten Lüfterflügel auf entgegengesetzte Förderrichtungen umstellbar sind. Ist eine Umstellung der Antriebsdrehrichtung des Lüfterrades gegeben, so kann diese durch Umstellung der Antriebsdrehrichtung des jeweiligen Antriebsaggregates, beispielsweise eines Motores erfolgen, gegebenenfalls durch Zwischenschaltung eines Umkehrgetriebes zum Antriebsaggregat. This is the case with configurations that can be switched to opposite conveying directions by reversing the direction of rotation of the drive, but also with configurations that, optionally combined with this, can be converted to opposite conveying directions by converting the fan blades rotatably guided in the hub about their radial blade axes. If the drive direction of rotation of the fan wheel is changed, this can be done by changing the drive direction of the respective drive unit, for example a motor, if necessary by interposing a reverse gear to the drive unit.
Darüber hinaus ermöglicht eine in der Nabe drehbare Lagerung der radialen, um ihre Flügelachsen drehbaren Lüfterflügel auch durch Änderung des jeweiligen Flügelwinkels eine Einflussnahme auf Größe und/oder Förderrichtung des jeweiligen FörderStromes, so dass auch unabhängig von der Änderung der Leistung und/oder der Antriebsdrehzahl des zugehörigen Antriebsaggregates vielfältig auf die Stärke und/oder die Richtung des geförderten Luftstromes bis hin zur Umkehrung der Förderrichtung auf entgegengesetzte Richtungen, beispielsweise von Blasen auf Saugen in Bezug auf eine jeweilige Beaufschlagungsfläche einer Kühlfläche, Einfluss genommen werden kann. In addition, a rotatable mounting in the hub of the radial fan blades, which can be rotated about their blade axes, also enables the size and / or conveying direction of the respective blade to be influenced by changing the respective blade angle Conveying currents, so that regardless of the change in power and / or the drive speed of the associated drive unit, varied on the strength and / or direction of the conveyed air flow up to the reversal of the conveying direction to opposite directions, for example from blowing to suction in relation to a respective impact surface of a cooling surface, influence can be taken.
Eingeschränkt sind diese Möglichkeiten unter anderem dadurch, dass - insbesondere bezogen auf Lüfterräder mit zur Nabe um radiale Flügelachsen drehbaren Lüfterflügeln - die Verstellbarkeit der Lüfterflügel in ihrem Flügelwinkel bis hin zu entgegengesetzten Förderrichtungen auch Abstände zwischen den Lüfterflügeln bedingt, die sowohl eine behinderungsfreie Umstellung der Lüfterflügel in ihrem Flügelwinkel zwischen den entgegengesetzten Endlagen wie auch einen hinreichenden Abstand der Lüfterflügel zueinander nötig machen. Dies unter Berücksichtigung dessen, dass üblicherweise die Verstellung der Lüfterflügel um ihre Flügelachsen über eine Getriebeabstützung erfolgt, die als Winkeltrieb zu den Fußzapfen der Lüfterflügel Antriebsritzel vorsieht, welche entsprechend der Anzahl der über den Umfang der Nabe angeordneten Lüfterflügel einer Zahnbahn entsprechend großen Durchmessers zugeordnet sind. These possibilities are limited, among other things, by the fact that - in particular with regard to fan wheels with fan blades that can be rotated around radial blade axes towards the hub - the adjustability of the fan blades in their blade angle up to opposite conveying directions also requires distances between the fan blades, which both enable the fan blades to be adjusted without hindrance make their blade angle between the opposite end positions and a sufficient distance between the fan blades necessary. This taking into account the fact that the fan blades are usually adjusted around their blade axes via a gear support, which provides drive pinions as an angular drive to the stems of the fan blades, which are assigned to a tooth path of a correspondingly large diameter according to the number of fan blades arranged around the circumference of the hub.
Konstruktiv bedingen diese Gegebenheiten relativ große Übersetzungsverhältnisse zwischen den im Durchmesser kleinen Ritzeln und der antriebsseitigen, im Durchmesser großen Zahnbahn, und damit auch verhältnismäßig große zu übertragende Kräfte bezüglich der Einstellung des jeweils gewünschten Flügelwinkels für die Lüfterflügel den für die Umstellung der Lüfterflügel geforderten kurzen ZeitIntervallen. In terms of construction, these conditions require relatively large transmission ratios between the pinion gears with a small diameter and the drive-side, large-diameter toothed track, and thus also relatively large forces to be transmitted with regard to the setting of the desired one Blade angle for the fan blades the short time intervals required for moving the fan blades.
Bekannt ist aus der deutschen Patentanmeldung DE 102018 106 454 Al der konstruktive Aufbau eines angetriebenen Lüfterrades als in entgegengesetzten Drehrichtungen antreibbares Lüfterrad mit zu seinem zentralen Antrieb koaxial drehbarer sowie zwischen Anschlaglagen zum Antrieb mit Drehspiel verstellbarer Nabe und mit umfangsseitig zur Nabe drehbar gelagerten, radialen und - im Bereich zwischen Anschlaglagen der Nabe zum Antrieb - über eine Getriebeabstützung zum Antrieb um ihre Flügelachsen verdrehbaren und in ihrem Flügelwinkel einstellbaren Lüfterflügeln. Dies bei einer Getriebeabstützung eines jeweiligen Lüfterflügels über ein zur Flügelachse konzentrisches Ritzel, das als Teil eines Winkeltriebes mit einer zum Antrieb konzentrischen Zahnbahn kämmt, wobei sich ein relativ großes Übersetzungsverhältnis der antriebsseitigen Zahnbahn zum jeweiligen flügelseitigen Ritzel, also eine Übersetzung in Schnelle ergibt. Dies im Rahmen einer anschlagbegrenzten Verdrehbarkeit des Antriebsteils zur Nabe mit entsprechend hohen Stell- und Beschleunigungskräften, insbesondere im Bereich des Umschlagens der Lüfterflügel über eine zur Drehachse des Lüfterrades senkrechte, zwischen den entgegengesetzten Förderrichtungen liegende Umschlagebene. From the German patent application DE 102018 106 454 A1, the structural design of a driven fan wheel as a fan wheel that can be driven in opposite directions of rotation with a hub that can be rotated coaxially to its central drive and that can be adjusted between stop positions for drive with rotational play and with radial and - in the area between the stop positions of the hub to the drive - fan blades which can be rotated about their blade axes and adjustable in their blade angle via a gear support for the drive. This with a gear support of a respective fan blade via a pinion concentric to the blade axis, which meshes as part of an angular drive with a tooth path concentric to the drive, resulting in a relatively large transmission ratio of the drive-side tooth path to the respective blade-side pinion, i.e. a speed ratio. This in the context of a stop-limited rotatability of the drive part to the hub with correspondingly high actuating and acceleration forces, in particular in the area of the turning of the fan blades over an envelope plane perpendicular to the axis of rotation of the fan wheel and located between the opposite conveying directions.
Entsprechend den dabei wirkenden Stell- und Beschleunigungskräften ergeben sich verhältnismäßig hohe Bauteilbelastungen, die insbesondere für die Elemente der Getriebeabstützung eine entsprechend tragfähige Ausbildung bedingen. Dies insbesondere bei angestrebten, möglichst kurzen Umstellzeiten für die Lüfterflügel zwischen entgegengesetzten Förderrichtungen . Der Erfindung liegt die Aufgabe zugrunde, für die Umstellung der Lüfterflügel des Lüfterrades zwischen ihren entgegengesetzten Förderrichtungen entsprechenden Stelllagen zu günstigeren Arbeitsverhältnissen zu kommen, in denen sich sowohl kurze Umstellzeiten ergeben als auch reduzierte Bauteilbelastungen für die Getriebeabstützung. Corresponding to the actuating and acceleration forces that act, there are relatively high component loads which, in particular, require a suitably stable design for the elements of the transmission support. This is particularly the case when the conversion times for the fan blades between opposite conveying directions are aimed for as short as possible. The invention is based on the object of moving the fan blades of the fan wheel between their opposite conveying directions to more favorable working conditions in which both short changeover times result and reduced component loads for the gearbox support.
Gemäß der Erfindung ist hierzu vorgesehen, dass überlagert, und damit parallel zur zwischen den Anschlaglagen drehwinkelbegrenzten Drehbarkeit der Nabe zum Antrieb, eine im Drehwinkel unbegrenzte, freie Drehbarkeit zwischen der Nabe und dem Antrieb ermöglicht wird. So lassen sich auch zueinander gegensinnige Drehbewegungen bei drehwinkelbegrenzter Abstützung des Antriebs zur Nabe einerseits und bei im Drehwinkel unbegrenzter, frei durchlaufender Drehabstützung der Nabe zum Antrieb realisieren. Dies insbesondere über einen Planetentrieb mit der Folge eines gemittelten Übersetzungsverhältnisses in der Verbindung des Antriebs zur die Lüfterflügel tragenden Nabe und zu den um ihre Flügelachsen drehbaren Lüfterflügeln. Als Folge hiervon ergibt sich die Möglichkeit, die jeweiligen Getriebeelemente in der Verbindung der Lüfterflügel zum Antrieb und des Antriebs zur Nabe kosten- und herstellungsgünstig gestalten zu können. According to the invention it is provided for this purpose that superimposed, and thus parallel to the rotation angle of the hub to the drive, which is limited in rotation angle between the stop positions, an unlimited, free rotation between the hub and the drive is made possible in the rotation angle. Rotational movements in opposite directions to one another can thus also be realized with limited rotation angle-limited support of the drive to the hub on the one hand and with freely continuous rotation support of the hub to the drive with unlimited rotation angle. This in particular via a planetary drive with the result of an averaged transmission ratio in the connection of the drive to the hub carrying the fan blades and to the fan blades that can rotate about their blade axes. As a result of this, there is the possibility of being able to design the respective gear elements in the connection of the fan blades to the drive and the drive to the hub in a cost-effective and manufacturing-favorable manner.
Erfindungsgemäß ist es in weiterer Ausgestaltung für ein angetriebenes Lüfterrad mit zentraler Abstützung über eine zentrale Nabe besonders zweckmäßig, für die zur Nabe radialen, um ihre Flügelachsen drehbar geführten und in ihrem Flügelwinkel einstellbaren Lüfterflügeln einen zu den Lüfterflügeln fußseitigen, zur zentralen Drehachse des Lüfterrades konzentrischen Stellring vorzusehen, der über Getriebeabstützungen mit den Lüfterflügeln verbunden ist und der überlagert arbeitende Antriebsverbindungen zum Lüfterrad aufweist, von denen eine als erster Antriebsstrang den Drehwinkel des Lüfterrades zur Nabe durch Anschläge im Weg begrenzt und die andere, als zweiter Antriebsstrang innerhalb des anschlagbegrenzten Stellbereiches des ersten Antriebsstranges durch eine im Drehweg unbegrenzte Drehabstützung gebildet ist. According to the invention, it is particularly useful in a further embodiment for a driven fan wheel with central support via a central hub, for the fan blades that are radial to the hub, rotatably guided around their blade axes and adjustable in their blade angle, one to the fan blades foot-side, to the central axis of rotation of the Fan wheel concentric adjusting ring, which is connected to the fan blades via gear supports and which has superimposed drive connections to the fan wheel, one of which, as the first drive train, limits the angle of rotation of the fan wheel to the hub by stops in the way and the other, as a second drive train within the stop-limited adjustment range of the first drive train is formed by a rotational support which is unlimited in the rotational path.
Im Rahmen der Erfindung ist es zweckmäßig, dieIn the context of the invention, it is useful to
Getriebeabstützung und die für die im Drehwinkel unbegrenzte, insbesondere als Planetentrieb gestaltete Drehverbindung integriert zur Nabe vorzusehen und die Nabe ihrerseits zentral mit einer Tragöffnung für die Aufnahme eines Führungszapfens für das Lüfterrad zu versehen. Ein solcher Führungszapfen ist zweckmäßigerweise in axialer Verlängerung zum antriebsseitigen Antrieb, beispielsweise zum Abtrieb eines Antriebsaggregates, ausgebildet, so dass gute Voraussetzungen für die Gestaltung einer tragenden Verbindung eines Antriebsaggregates oder dessen Abtriebes zum Lüfterrad als Steckverbindung gegeben sind. To provide gear support and the rotary connection, which is unlimited in the angle of rotation, in particular designed as a planetary drive, integrated to the hub and to provide the hub in turn with a central support opening for receiving a guide pin for the fan wheel. Such a guide pin is expediently designed as an axial extension of the drive-side drive, for example for the output of a drive unit, so that good prerequisites are given for the design of a load-bearing connection of a drive unit or its output to the fan wheel as a plug connection.
Weitere Einzelheiten und Merkmale der Erfindung sind der nachfolgenden Beschreibung und den zugehörigen Zeichnungen zu entnehmen. Es zeigen im Einzelnen: Further details and features of the invention can be found in the following description and the associated drawings. They show in detail:
Fig. 1 eine stirnseitige Ansicht eines zentralen, zu einem Antrieb abgestützten und mit dem Antrieb verbundenen Lüfterrades mit zu dessen Nabe radialen Lüfterflügeln, die um ihre Flügelachsen zur Nabe verdrehbar abgestützt mit dem Antrieb verbunden sind, Fig. 2 einen zentralen Schnitt A-A durch das Lüfterrad mit dessen zentraler Nabe, 1 shows an end view of a central fan wheel, supported to form a drive and connected to the drive, with fan blades radial to the hub thereof, which are connected to the drive so as to be rotatable about their blade axes relative to the hub, 2 shows a central section AA through the fan wheel with its central hub,
Fig. 3 einen Schnitt B-B durch den Nabenbereich des Lüfterrades, und 3 shows a section B-B through the hub area of the fan wheel, and
Fig. 4 eine dem Schnitt B-B entsprechende, vergrößerte4 is an enlarged view corresponding to section B-B
Darstellung des Nabenbereiches und den über diesen laufenden Antriebsverbindungen für den Drehantrieb der Nabe und den zur Nabe drehbar gelagerten und in ihrem Flügelwinkel einstellbaren Lüfterflügeln. Representation of the hub area and the drive connections running over these for the rotary drive of the hub and the fan blades which are mounted rotatably relative to the hub and whose blade angle is adjustable.
Das Lüfterrad ist in den Zeichnungen insgesamt mit 1 bezeichnet und weist radiale Lüfterflügel 2 auf, die in der zentralen, um die Drehachse 3 des Lüfterrades 1 drehbaren Nabe 4 gelagert sind. Abgestützt ist das Lüfterrad 1 zentral zur Drehachse 3 auf einem Führungszapfen 6 als Teil einer Flanschverbindung 7 des Lüfterrades 1 zu einem Antrieb 8, insbesondere einem Antriebsaggregat oder in korrespondierender Weise zu einer Antriebswelle. The fan wheel is designated as a whole in the drawings with 1 and has radial fan blades 2, which are mounted in the central hub 4 which is rotatable about the axis of rotation 3 of the fan wheel 1. The fan wheel 1 is supported centrally to the axis of rotation 3 on a guide pin 6 as part of a flange connection 7 of the fan wheel 1 to a drive 8, in particular a drive unit or, in a corresponding manner, to a drive shaft.
Die Nabe 4 nimmt, wie insbesondere in der vergrößerten Darstellung gemäß Fig. 4 ersichtlich, einen zentralen, auf dem Führungszapfen 6 über einen Lagerring 9 drehbar abgestützten Stellring 10 auf, zu dem die Lüfterflügel 2 über ihre fußseitigen Enden 11 in radialem Eingriff stehen und über eine Getriebeabstützung 12 verbunden sind, die seitens des fußseitigen Endes 11 durch ein Kegelritzel 13 gebildet ist, das zu einer ringförmigen Zahnbahn 14 seitens des Stellringes 10 in Eingriff steht, entsprechend einem durch Ritzel und Tellerrad gebildeten Winkeltrieb. Die über die Nabe 4 laufende Antriebsverbindung des Lüfterrades 1 zum Antriebsaggregat 8 ist bezüglich der Drehstellung des Lüfterrades 1 und des Drehwinkels der in der Nabe 4 geführten Lüfterflügel 2 um ihre Flügelachsen 5 bezogen auf eine jeweilige Drehstellung des Lüfterrades 1 durch zwei überlagert zueinander arbeitende Antriebsstränge gebildet. Von diesen arbeitet der erste Antriebsstrang zur Drehverstellung des über das Antriebaggregat 8 angetriebenen Lüfterrades 1 auf einen vorgegebenen Drehwinkel anschlagbegrenzt mit Freigang, und der zweite, hierzu überlagernd arbeitende Antriebsstrang, bezogen auf eine jeweils innerhalb der Anschlaggrenzen liegende Drehstellung des Lüfterrades 1 zum Antrieb 8, die jeweilige Drehlage der Lüfterflügel 1 um ihre Flügelachsen 5 im Flügelwinkel bestimmend. Damit wird der Flügelwinkel der Lüfterflügel 2 vom zweiten Antriebsstrang überlagernd zum ersten Antriebsstrang eingestellt. As can be seen in particular in the enlarged illustration according to FIG. 4, the hub 4 receives a central adjusting ring 10 which is rotatably supported on the guide pin 6 via a bearing ring 9 and to which the fan blades 2 are in radial engagement via their foot-side ends 11 and via a gear support 12 are connected, which is formed on the part of the foot-side end 11 by a bevel pinion 13 which is in engagement with an annular tooth path 14 on the part of the adjusting ring 10, corresponding to an angular drive formed by pinion and ring gear. The drive connection of the fan wheel 1 to the drive unit 8 running via the hub 4 is formed with respect to the rotational position of the fan wheel 1 and the angle of rotation of the fan blades 2 guided in the hub 4 around their blade axes 5 related to a respective rotational position of the fan wheel 1 by two drive trains working superimposed on one another . Of these, the first drive train works to adjust the rotation of the fan wheel 1 driven by the drive unit 8 to a predetermined angle of rotation with limit stop and clearance, and the second drive train, which works superimposed on this, based on a rotational position of the fan wheel 1 relative to the drive 8, which is within the stop limits determining the respective rotational position of the fan blades 1 about their blade axes 5 in the blade angle. In this way, the blade angle of the fan blades 2 is adjusted from the second drive train to be superimposed on the first drive train.
Konstruktiv ist dies dadurch erreicht, dass die Drehstellung des die fußseitigen Enden der Lüfterflügel 2 aufnehmenden, radial äußeren Bereiches der Nabe 4 gegen den Stellring 10 in der Verbindung des Stellringes 10 zur Nabe im Stellweg anschlagbegrenzt ist und der Stellring 10 sich in Umfangsrichtung erstreckende Führungsbahnen 15 aufweist, in die zur Begrenzung des Verstellbereiches auf die Länge der Führungsbahnen 15 zur Nabe 4 lagefeste Anschlagbolzen 16 eingreifen. Structurally, this is achieved in that the rotary position of the radially outer area of the hub 4 receiving the foot-side ends of the fan blades 2 against the adjusting ring 10 in the connection of the adjusting ring 10 to the hub is limited in the adjusting path and the adjusting ring 10 is guide tracks 15 extending in the circumferential direction has, in which to limit the adjustment range to the length of the guide tracks 15 to the hub 4, fixed stop bolts 16 engage.
Parallel zu einem solchen oder auch andersartig gestalteten ersten Antriebsstrang arbeitet, insgesamt eine Antriebsverbindung 17 bildend, der zweite Antriebsstrang innerhalb des Freigangbereiches des ersten Antriebsstranges als Drehabstützung des Stellringes 10 zum Antrieb 8. Diese Drehabstützung ist als frei durchlaufende, über den Verstellbereich des Stellringes 10 zum Antriebsaggregat 8 frei durchlaufende, im Verstellweg nicht begrenzte In parallel with such a first drive train or a first drive train of a different configuration, the second drive train operates within the free range of the first drive train, forming a drive connection 17 overall as a rotary support of the adjusting ring 10 to the drive 8. This rotary support is as a freely running, freely running over the adjustment range of the adjusting ring 10 to the drive unit 8, not limited in the adjustment path
Antriebsverbindung gestaltet. Dies erfindungsgemäß bevorzugt mit einem zum Antrieb drehfest beispielsweise über eine Unrundverbindung 24, wie einen Sechskant abgestützten Planetenträger 19 mit Lagerzapfen 20 für die Planetenräder 21. Die Planetenräder 21 stehen zu einem Sonnenrad 22 in Eingriff, das zur Flanschverbindung 7, und damit zum Antriebsaggregat 8 drehfest, beispielsweise wiederum über eine Unrundverbindung, verbunden ist. Das zum Planetenträger 19 umschließende Hohlrad 23 ist an der Nabe 4 lagefest abgestützt und dreht sich mit dieser. Somit wird über den Planetentrieb 18 innerhalb der anschlagbegrenzten Verdrehbarkeit der Nabe 4 zum Stellring 10 der Stellring 10 in seiner Verdrehbarkeit zum Antriebsaggregat 8 über den Planetentrieb 18 hinsichtlich der Einstellung des Flügelwinkels der Lüfterflügel 2 gesteuert, so dass bei Fixierung des Planetentriebes 18 die Drehstellung der Lüfterflügel 2 um ihre Flügelachsen 5 im jeweiligen Freigangbereich des Stellringes 10 unverändert bleibt. Eine Fixierung der Drehlage des Planetentriebes 18 ermöglicht im Rahmen der Erfindung zudem auch eine Steuerung des Lüfterrades 1 entsprechend einer jeweils geforderten Förderleistung. Drive connection designed. According to the invention, this is preferably done with a planetary carrier 19 with bearing journals 20 for the planetary gears 21 that is non-rotatably supported for the drive, for example via a non-circular connection 24, such as a hexagon , for example in turn via a non-circular connection. The ring gear 23 surrounding the planet carrier 19 is supported in a fixed position on the hub 4 and rotates with it. Thus, via the planetary drive 18 within the stop-limited rotatability of the hub 4 to the adjusting ring 10, the adjusting ring 10 is controlled in its rotatability to the drive unit 8 via the planetary drive 18 with regard to the setting of the blade angle of the fan blades 2, so that when the planetary drive 18 is fixed, the rotational position of the fan blades 2 about their wing axes 5 in the respective free range of the adjusting ring 10 remains unchanged. A fixation of the rotational position of the planetary drive 18 also enables the fan wheel 1 to be controlled in accordance with the delivery rate required in each case within the scope of the invention.
Hierzu ist bezogen auf die Erfindung, und das vorstehend erläuterte Ausführungsbeispiel ergänzend eine die Drehlage der Nabe 4 des Lüfterrades 1 erfassende und gegebenenfalls auch fixierende Steuereinrichtung 25 fallweise zweckmäßig. Diese kann durch ein zur Nabe 4 drehfestes, abtastbares Rad, beispielsweise ein Rippenrad 26 oder dergleichen, gebildet sein, über das die hierzu korrespondierende Drehstellung der Lüfterflügel 2 mittels einer optischen oder mechanischen Abtasteinrichtung, beispielsweise mittels einer zum Antriebsaggregat 8 lagefesten Wippe erfasst und in Steuersignale für die Luftfördermenge umgesetzt werden kann. For this purpose, based on the invention and the exemplary embodiment explained above, a control device 25 which detects the rotational position of the hub 4 of the fan wheel 1 and optionally also fixes it is expedient in some cases. This can be formed by a scannable wheel that is non-rotatable with respect to the hub 4, for example a ribbed wheel 26 or the like, via which the rotational position of the corresponding thereto Fan blade 2 can be detected by means of an optical or mechanical scanning device, for example by means of a rocker fixed in position relative to the drive unit 8, and can be converted into control signals for the air flow rate.
Weiterführend kann eine solche Abtasteinrichtung auch als aktive Stelleinrichtung zum Beispiel in Form einer Stellwippe für die Einstellung des Lüfterrades auf jeweils geforderte Fördermengen des Lüfterrades 1 genutzt werden, um mithilfe der angesprochenen Abtast- und/oder Stelleinrichtung 27 jeweils geforderten Luftmengen entsprechende Rastpunkte anzufahren und/oder diesen entsprechende Flügelstellungen des Lüfterrades einzustellen. Dies kann gegebenenfalls auch für eine Fernbetätigung genutzt werden. In addition, such a scanning device can also be used as an active adjusting device, for example in the form of a rocker switch for setting the fan wheel to the required flow rates of the fan wheel 1, in order to use the mentioned scanning and / or adjusting device 27 to move to and / or to corresponding locking points set these corresponding blade positions of the fan wheel. If necessary, this can also be used for remote control.
Insgesamt ist dadurch ein Lüfterrad geschaffen mit einer über eine Getriebeverbindung mit einem Stellring einer angetriebener Nabe und in der Nabe um ihre Flügelachsen drehbaren Lüfterflügeln sowie Einstellung der Lüfterflügel in ihrem Flügelwinkel über ausgehend vom Antrieb des Lüfterrades zueinander überlagernd arbeitende Antriebsverbindungen zum Stellring, wobei das Lüfterrad fallweise mit einer zur Nabe an- und/oder abgreifenden drehverbundenen Stell- und/oder Abtasteinrichtung für die Flügelwinkel versehen ist. Overall, a fan wheel is created with a gear connection with an adjusting ring of a driven hub and in the hub rotatable about their blade axes fan blades as well as setting the fan blades in their blade angle via superimposed drive connections to the adjusting ring starting from the drive of the fan wheel, the fan wheel occasionally is provided with a rotatably connected adjusting and / or scanning device for the vane angle, which engages and / or taps off the hub.
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI202030432T SI4055276T1 (en) | 2019-12-18 | 2020-11-11 | Fan wheel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019134887.0A DE102019134887A1 (en) | 2019-12-18 | 2019-12-18 | Fan wheel |
PCT/EP2020/025503 WO2021121648A1 (en) | 2019-12-18 | 2020-11-11 | Fan wheel |
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EP4055276A1 true EP4055276A1 (en) | 2022-09-14 |
EP4055276B1 EP4055276B1 (en) | 2024-02-21 |
EP4055276C0 EP4055276C0 (en) | 2024-02-21 |
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Family Applications (1)
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EP20804439.6A Active EP4055276B1 (en) | 2019-12-18 | 2020-11-11 | Fan wheel |
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US (1) | US11708836B2 (en) |
EP (1) | EP4055276B1 (en) |
JP (1) | JP7496633B2 (en) |
KR (1) | KR102719297B1 (en) |
CN (1) | CN113677896B (en) |
CA (1) | CA3157977A1 (en) |
CL (1) | CL2022001637A1 (en) |
DE (1) | DE102019134887A1 (en) |
ES (1) | ES2985876T3 (en) |
HU (1) | HUE067211T2 (en) |
MX (1) | MX2022007489A (en) |
PE (1) | PE20221606A1 (en) |
PL (1) | PL4055276T3 (en) |
SI (1) | SI4055276T1 (en) |
WO (1) | WO2021121648A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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US12152597B2 (en) * | 2018-06-18 | 2024-11-26 | Ie Assets Gmbh + Co. Kg | Fan wheel driven in only one rotational direction |
DE102022211937B3 (en) | 2022-11-10 | 2024-01-04 | Ie Assets Gmbh & Co. Kg | Fan blades with rotary bearing and fan wheel |
US20240174074A1 (en) * | 2022-11-29 | 2024-05-30 | Sun Way Shue | Self-Powered Fan Wheel Cooling System for Electric Vehicles |
DE102023119250A1 (en) | 2023-07-20 | 2025-01-23 | Ie Assets Gmbh & Co. Kg | fan wheel |
DE102024120215B3 (en) * | 2024-07-17 | 2025-07-31 | Ie Assets Gmbh & Co. Kg | Reversible fans and operating procedures |
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FR1553936A (en) * | 1966-12-05 | 1969-01-17 | ||
GB1296061A (en) * | 1969-04-21 | 1972-11-15 | ||
US3902822A (en) * | 1973-02-21 | 1975-09-02 | United Aircraft Corp | Modular gearbox for a variable pitch fan propulsor |
JPS55110794U (en) * | 1979-01-29 | 1980-08-04 | ||
JPS60116898A (en) * | 1983-11-28 | 1985-06-24 | Ebara Corp | Blade angle control device for hydraulic machine equipped with moving blade |
JPH0811942B2 (en) | 1984-07-11 | 1996-02-07 | 株式会社日立製作所 | Engine controller |
JPS61232303A (en) * | 1985-04-06 | 1986-10-16 | Dengiyoushiya Kikai Seisakusho:Kk | Normal/reverse rotatable fluid machinery |
DE3910784A1 (en) * | 1989-04-04 | 1990-10-18 | Hans Schilder | Reversible rotor blade (180@) |
US5174716A (en) * | 1990-07-23 | 1992-12-29 | General Electric Company | Pitch change mechanism |
US5152668A (en) * | 1990-07-23 | 1992-10-06 | General Electric Company | Pitch change mechanism for prop fans |
US5282719A (en) * | 1991-05-13 | 1994-02-01 | Alliedsignal Inc. | Quad mode fan pitch actuation system for a gas turbine engine |
CN101258366B (en) * | 2005-07-13 | 2011-02-02 | 乔·维莱拉 | Combined light fitting and ceiling fan |
US20130039766A1 (en) * | 2011-08-10 | 2013-02-14 | General Electric Company | Dual direction axial fan |
FR3032941B1 (en) * | 2015-02-24 | 2017-03-10 | Snecma | NON-CARRIED TANK FOR AIRCRAFT TURBOMACHINE |
KR20170030273A (en) * | 2015-09-09 | 2017-03-17 | 주식회사 티에스에이 | Fan module for electronic component |
FR3051842B1 (en) * | 2016-05-24 | 2019-06-14 | Safran Helicopter Engines | AIRCRAFT TURBOMACHINE WITH EPICYCLOIDAL REDUCER |
CN106014491B (en) * | 2016-08-05 | 2017-12-12 | 泉州泉港璟冠信息科技有限公司 | A kind of angle of attack type variable fanjet blade turning mechanism |
DE102018106455B4 (en) * | 2018-03-20 | 2020-03-26 | Ie Assets Gmbh & Co. Kg | Fan wheel to be driven in one direction of rotation |
DE102018106454A1 (en) * | 2018-03-20 | 2019-09-26 | Ie Assets Gmbh & Co. Kg | Impeller driven in opposite directions of rotation |
DE102018114534B4 (en) * | 2018-06-18 | 2020-10-08 | Ie Assets Gmbh & Co. Kg | Fan wheel driven in only one direction of rotation |
FR3098847B1 (en) * | 2019-07-16 | 2021-06-18 | Safran Trans Systems | EPICYCLOIDAL GEAR REDUCER FOR A TURBOMACHINE |
US11939984B2 (en) * | 2021-04-29 | 2024-03-26 | The Boeing Company | Compressors having multi-speed gearboxes |
-
2019
- 2019-12-18 DE DE102019134887.0A patent/DE102019134887A1/en not_active Withdrawn
-
2020
- 2020-11-11 MX MX2022007489A patent/MX2022007489A/en unknown
- 2020-11-11 PE PE2022001113A patent/PE20221606A1/en unknown
- 2020-11-11 ES ES20804439T patent/ES2985876T3/en active Active
- 2020-11-11 WO PCT/EP2020/025503 patent/WO2021121648A1/en not_active Ceased
- 2020-11-11 CA CA3157977A patent/CA3157977A1/en active Pending
- 2020-11-11 SI SI202030432T patent/SI4055276T1/en unknown
- 2020-11-11 HU HUE20804439A patent/HUE067211T2/en unknown
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- 2022-06-16 CL CL2022001637A patent/CL2022001637A1/en unknown
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CA3157977A1 (en) | 2021-06-24 |
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JP2023529245A (en) | 2023-07-10 |
US11708836B2 (en) | 2023-07-25 |
US20220099098A1 (en) | 2022-03-31 |
CN113677896B (en) | 2023-11-07 |
CN113677896A (en) | 2021-11-19 |
HUE067211T2 (en) | 2024-10-28 |
SI4055276T1 (en) | 2024-12-31 |
CL2022001637A1 (en) | 2023-02-24 |
MX2022007489A (en) | 2022-09-02 |
JP7496633B2 (en) | 2024-06-07 |
KR102719297B1 (en) | 2024-10-18 |
EP4055276B1 (en) | 2024-02-21 |
PL4055276T3 (en) | 2024-09-16 |
EP4055276C0 (en) | 2024-02-21 |
ES2985876T3 (en) | 2024-11-07 |
DE102019134887A1 (en) | 2021-06-24 |
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