EP2218917A1 - Radial or diagonal ventilator wheel - Google Patents
Radial or diagonal ventilator wheel Download PDFInfo
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- EP2218917A1 EP2218917A1 EP09152661A EP09152661A EP2218917A1 EP 2218917 A1 EP2218917 A1 EP 2218917A1 EP 09152661 A EP09152661 A EP 09152661A EP 09152661 A EP09152661 A EP 09152661A EP 2218917 A1 EP2218917 A1 EP 2218917A1
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- fan
- fan wheel
- wheel according
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- axis
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- 230000001788 irregular Effects 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000009826 distribution Methods 0.000 description 4
- 238000005352 clarification Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
Definitions
- the present invention relates according to the preamble of claim 1, a fan wheel in an embodiment as a radial or diagonal fan, consisting of a cover plate with an inlet opening, a bottom plate and a plurality of circumferentially of the inlet opening and distributed around a rotation axis arranged fan blades, wherein the cover disc and / or the bottom disk have / have a non-rotationally symmetric geometry.
- non-rotationally symmetrical means that any two different radial sections of the bottom plate and / or the cover plate in two planes, which include the axis of rotation and include a certain differential angle in the circumferential direction, are not congruent at different circumferential angles, but differ from each other , A deviation could basically be present in the direction of the axis of rotation (axially) and / or in the radial direction (radially). In other words, in the case of non-rotational symmetry, rotation of the body about certain angles about the axis of rotation does not imitate the object or its intersection on itself.
- each fan blade on its suction side and its pressure side has different (measured axially) outlet widths, and may - depending on the embodiment - the outlet width on the suction side be smaller or larger than the outlet width on the pressure side.
- the EP 1 933 039 A1 describes a radial fan with ribs, recesses or incisions on the outside of the cover plate. This embodiment should lead to a noise reduction by a certain flow guidance.
- EP 1 032 766 B1 describes a fan especially for a turbocharger.
- this fan blades are formed by embossing on at least one of the two discs (bottom and / or cover disc). These imprints also create a non-rotationally symmetric geometry.
- this publication is not concerned with influencing the flow, but has mainly manufacturing and stability-promoting aspects to the content.
- the present invention is based on the object to provide a fan wheel of the type described above, with the improved mechanical stability of the flow for optimization in terms of air performance, efficiency and noise behavior is achieved.
- a first aspect of the invention is according to claim 1 in that the respective non-rotationally symmetrical cover disc or bottom disc additionally seen in the axial or axis-parallel direction a continuous, punctiform course on the respective outer sides of the bottom and / or cover plate over the entire circumference (also over the regions of the blades).
- the geometry deviation of two different, the axis of rotation containing sections of each non-rotationally symmetric disc (top or bottom disc) in the radial direction be arbitrary (in contrast to the invention in any case punctiform course in the axial direction). This means that radially either a punctiform or a jump-shaped course is possible.
- an inventive fan wheel 1 to be driven in rotation about a rotation axis Z comprises a cover disk 2 with a preferably substantially central inlet opening 4 for air inlet, a bottom disk 6 opposite in the axial direction Z and a plurality of fan blades 8.
- These fan blades 8 are located between the bottom disk 6 and the cover plate 2 arranged or formed entirely or partially by a specific shaping of the bottom plate 6 and / or the cover plate 2 (see. Fig. 8 ), wherein the discs 2, 6 are then connected directly in these areas.
- the fan blades 8 are arranged in a certain circumferential distribution about the rotation axis Z and the inlet opening 4 around. In the circumferential direction, in each case between two adjacent fan blades 8, blade channels 10 are formed, which lead radially or diagonally outward from the region of the inlet opening 4 and form outlet openings at the outer region of the fan wheel 1.
- each of the two disks 2, 6 has a non-rotationally symmetrical geometry.
- Non-rotational symmetry in the sense of the present invention is when the lying in the planes E1 and E2 cross-sectional areas of the respective disc 2 and / or 6 - at different circumferential angles - differ from each other.
- each non-rotationally symmetrical disc 2 and / or 6 in the axial direction on the respective outer sides of the bottom plate 6 and / or cover plate 2 over the entire peripheral region (also on the blades) away punctual, ie ⁇ with decreasing differential angle exists a limit angle ⁇ G> 0 °, from which a further approximation of the two radial sections E1 and E2 ( Fig. 10 ) causes the shape deviations in the axial direction Z of the respective outer sides of the bottom disk 6 and / or cover disk 2 to become smaller.
- two cross sections which lie in two planes containing the axis of rotation Z and thereby intersecting in the axis of rotation Z, represent on each side of each fan blade 8 no jump in the direction of rotation over the blade 8.
- the geometry deviation of two different cuts containing the rotation axis Z in the radial direction (radius r in FIG Fig. 10 ) be arbitrary. This means that both punctiform and jump-like courses are possible here.
- Fig. 1 In the execution according to Fig. 1 is the cover plate 2 in the region of the inlet opening 4 equipped with a wheel inlet 12, wherein the cover plate 2 in the region of this Radeinlass 12 is not rotationally symmetrical in the direction of the axis of rotation Z is executed.
- the wheel inlet 12 extends web-like axially away from the cover plate 2 and has in the circumferential direction on a wavy contour with axial elevations and recesses lying therebetween.
- the fan wheel 1 is designed in this case as a centrifugal fan.
- Fig. 2 it is a radial fan, in which case only the cover plate 2 is non-rotationally symmetrical in the direction of the axis of rotation Z.
- the cover plate 2 is designed to be wavy in the circumferential direction, wherein in each case between two fan blades 8, a convex outwardly bulging portion is formed. These sections are continuous in the area of each fan blade 8 into each other.
- Fig. 3 an embodiment is shown as a radial fan, in which only the bottom plate 6 is non-rotationally symmetrical in the axial direction Z executed. Specifically, it may be a similar design, as in the cover plate 2 according to Fig. 2 is provided.
- FIG. 5 an embodiment of the fan wheel 1 is illustrated as a diagonal fan, wherein the cover plate 2 in the radial direction r is non-rotationally symmetrical, in this case not steadily, but jump-shaped. This is achieved by a non-continuous, but jumping over corners in radius course of an outer peripheral edge 14 of the cover plate 2.
- the Fig. 6 shows an embodiment as a radial fan, wherein the cover plate 2 is executed in the radial direction r non-rotationally symmetrical, namely point-like.
- cover plate 2 here has a continuous circumferential course without corners or other cracks.
- the Fig. 8 shows an embodiment as a radial fan, both discs, both the cover plate 2 and the bottom plate 6, are executed by a circumferentially wavy contour in the direction of the axis of rotation Z non-rotationally symmetrical.
- the cover disk 2 and the bottom disk 6 are directly connected to one another in the outer circumferential region of the fan wheel 1 and thus together form at least a portion of the fan blades 8.
- the fan blades 8 could be completely formed by the fact that the correspondingly shaped bottom and / or cover plates 6, 2 are connected directly to one another over the entire course of the blades 8.
- the discs 2, 6 are connected to each other only in the outer peripheral region, wherein 10 conventional blade sections are formed as separate parts in the inner inlet region of the blade channels.
- the non-rotationally symmetric design produces geometric structures which are periodically recurring in the circumferential direction.
- FIG. 9 This is an embodiment in Fig. 9 illustrated. Again, this is a centrifugal fan with non-rotationally symmetrical cover plate 2. This has at a peripheral point 16 a sudden changing radius r, and the outer peripheral edge 14 of the cover plate 2 extends starting from the Peripheral point 16 with a continuously changing radius over the circumference and ends after 360 ° again at the radius jump in the peripheral point 16. As a result, in this example, the peripheral edge 14 is spiraled.
- the fan blades 8 may have any desired course. For example, they may be curved forward or backward with respect to the direction of rotation.
- the invention is not limited to the illustrated and described embodiments, but also includes all the same in the context of the invention embodiments. Furthermore, the invention has hitherto not been limited to the combination of features defined in the respective independent claim, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of the respective independent claim can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claims are to be understood merely as a first formulation attempt for an invention.
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft gemäß dem Oberbegriff des Anspruchs 1 ein Ventilatorrad in einer Ausführung als Radial- oder Diagonalventilator, bestehend aus einer Deckscheibe mit einer Einlassöffnung, einer Bodenscheibe und mehreren über den Umfang der Einlassöffnung und um eine Rotationsachse herum verteilt angeordneten Ventilatorschaufeln, wobei die Deckscheibe und/oder die Bodenscheibe eine nicht-rotatationssymmetrische Geometrie aufweisen/aufweist.The present invention relates according to the preamble of
In diesem Zusammenhang bedeutet der Begriff "nicht-rotationssymmetrisch", dass zwei beliebige unterschiedliche Radialschnitte der Bodenscheibe und/oder der Deckscheibe in zwei Ebenen, die die Rotationsachse enthalten und in Umfangsrichtung einen bestimmten Differenzwinkel einschließen, bei verschiedenen Umfangswinkeln nicht deckungsgleich sind, sondern voneinander abweichen. Eine Abweichung könnte dabei grundsätzlich in Richtung der Rotationsachse (axial) und/oder in radialer Richtung (radial) vorhanden sein. Mit anderen Worten bedeutet dies, dass im Falle einer Nicht-Rotationssymmetrie eine Drehung des Körpers um bestimmte Winkel um die Rotationsachse das Objekt bzw. dessen Schnittfläche nicht auf sich selbst abbildet.In this context, the term "non-rotationally symmetrical" means that any two different radial sections of the bottom plate and / or the cover plate in two planes, which include the axis of rotation and include a certain differential angle in the circumferential direction, are not congruent at different circumferential angles, but differ from each other , A deviation could basically be present in the direction of the axis of rotation (axially) and / or in the radial direction (radially). In other words, in the case of non-rotational symmetry, rotation of the body about certain angles about the axis of rotation does not imitate the object or its intersection on itself.
Ein solches Ventilatorrad der eingangs beschriebenen, gattungsgemäßen Art ist in unterschiedlichen Ausführungen in der Veröffentlichung
Die
Die weitere Veröffentlichung
In zahlreichen weiteren Veröffentlichungen sind rotationssymmetrische Ventilatorräder beschrieben. Nur rein beispielhaft seien hier die Veröffentlichungen
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, ein Ventilatorrad der eingangs beschriebenen Art zu schaffen, mit dem bei guter mechanischer Stabilität eine verbesserte Beeinflussung der Strömung zur Optimierung hinsichtlich Luftleistung, Wirkungsgrad sowie Geräuschverhalten erreicht wird.The present invention is based on the object to provide a fan wheel of the type described above, with the improved mechanical stability of the flow for optimization in terms of air performance, efficiency and noise behavior is achieved.
Erfindungsgemäß wird dies durch die Merkmale des Anspruchs 1 oder durch die Merkmale des Anspruchs 2 erreicht. Vorteilhafte Ausgestaltungen der Erfindung sind in den jeweils abhängigen Ansprüchen und der sich unten anschließenden Beschreibung enthalten.This is achieved by the features of
Ein erster Erfindungsaspekt liegt gemäß dem Anspruch 1 darin, dass die jeweils nicht-rotationssymmetrische Deckscheibe bzw. Bodenscheibe zusätzlich in axialer bzw. achsparalleler Richtung gesehen einen kontinuierlichen, punktstetigen Verlauf an den jeweiligen Außenseiten von Boden- und/oder Deckscheibe über den gesamten Umfang (auch über die Bereiche der Schaufeln) hinweg aufweist. Dies bedeutet, es existiert zwischen zwei durch die Achse verlaufenden Radialschnitten ein Grenzwinkel αG > 0°, ab dem eine weitere Annäherung der beiden Radialschnitte dazu führt, dass auch die Form-Abweichungen in axialer Richtung der jeweiligen Außenseiten von Boden- und/oder Deckscheibe kleiner werden. Es handelt sich somit um einen stetigen Verlauf in axialer Richtung, wodurch gegenüber dem stufenförmigen Verlauf beispielsweise gemäß
Zusätzlich - gegebenenfalls aber auch alternativ - zu diesem ersten Erfindungsaspekt kann in einem zweiten Aspekt gemäß dem Anspruch 2 vorgesehen sein, dass die jeweils nicht-rotationssymmetrische Deckscheibe bzw. Bodenscheibe zwischen zwei radialen, die Rotationsachse enthaltenden und beidseitig jeder Ventilatorschaufel liegenden Schnitten über die Ventilatorschaufel hinweg ohne Sprung ausgebildet ist. Auch dies ist vorteilhaft im Sinne der Lösung der zu Grunde liegenden Aufgabe.In addition, but optionally also as an alternative to this first aspect of the invention, it can be provided in a second aspect that the respective non-rotationally symmetrical cover disk or bottom disk passes over the fan blade between two radial sections containing the rotation axis and lying on each side of each fan blade is formed without a jump. This too is advantageous in the sense of solving the underlying problem.
In weiterer Ausgestaltung der Erfindung kann die Geometrieabweichung zweier verschiedener, die Rotationsachse enthaltender Schnitte der jeweils nicht-rotationssymmetrischen Scheibe (Deck- oder Bodenscheibe) in radialer Richtung beliebig sein (im Gegensatz zu dem erfindungsgemäß jedenfalls punktstetigen Verlauf in axialer Richtung). Dies bedeutet, dass radial wahlweise ein punktstetiger oder auch ein sprungförmiger Verlauf möglich ist.In a further embodiment of the invention, the geometry deviation of two different, the axis of rotation containing sections of each non-rotationally symmetric disc (top or bottom disc) in the radial direction be arbitrary (in contrast to the invention in any case punctiform course in the axial direction). This means that radially either a punctiform or a jump-shaped course is possible.
Während man mit der geometrischen Gestaltung der Ventilatorschaufeln und der Gestaltung der zwischen den Schaufeln gebildeten Strömungskanäle durch eine bekannte rotationssymmetrisch ausgeführte Boden- und/oder Deckscheibe die Geschwindigkeits- und Druckverteilung in Richtung der Rotationsachse beeinflussen kann, bleibt die Ungleichförmigkeit in umfänglicher Richtung hiervon weitestgehend unbeeinflusst. Im Gegensatz dazu kann mit der erfindungsgemäß nicht-rotationssymmetrischen Gestaltung zusätzlich gezielt ein vorteilhafter Einfluss auf die in Umfangsrichtung auftretende Ungleichförmigkeit der Geschwindigkeits- und Druckverteilung genommen werden. Daraus resultieren u. a. folgende Vorteile:
- Beeinflussung der Abströmung vom Ventilatorrad derart, dass eine Vergleichmäßigung der Strömung vor allem in umfänglicher Richtung und dadurch bedingt eine Reduktion der maximal lokal auftretenden Strömungsgeschwindigkeit stattfindet, was sich positiv auf aerodynamische und akustische Eigenschaften des Ventilatorrades auswirkt; insbesondere wird dadurch eine Verbesserung des Wirkungsgrades und der Geräuschemission erreicht.
- Gezielte Beeinflussung der Strömung im Ventilatorrad zur Reduktion von Interaktionen mit den Schaufelkanalbewandungen zur Geräuschreduktion und zur Verbesserung der Luftleistung sowie des Wirkungsgrades.
- Mehr Freiheitsgrade zur Strömungsbeeinflussung (vor allem in umfänglicher Richtung) und Strömungsführung; dadurch Stabilisierung der Strömung im Schaufelkanal und somit Verringerung der Ablöseneigung der Strömung.
- Verbesserung der mechanischen Stabilität; dadurch auch Materialeinsparung möglich.
- Influencing the outflow from the fan wheel such that a homogenization of the flow takes place mainly in the circumferential direction and thereby a reduction of the maximum locally occurring flow velocity, which has a positive effect on aerodynamic and acoustic properties of the fan wheel; In particular, an improvement of the efficiency and the noise emission is achieved.
- Targeted influencing of the flow in the fan wheel to reduce interactions with the blade channel walls to reduce noise and to improve air performance and efficiency.
- More degrees of freedom for flow control (especially in the circumferential direction) and flow control; thereby stabilizing the flow in the blade channel and thus reducing the tendency to detach the flow.
- Improvement of mechanical stability; thereby also material saving possible.
Anhand von mehreren in der Zeichnung veranschaulichten Ausführungsbeispielen soll die Erfindung nun genauer erläutert werden. Dabei zeigen:
- Fig. 1
- eine erste Ausführungsform eines erfindungsgemäßen Ventilatorrades, und zwar in
Fig. 1a eine Perspektivansicht und inFig. 1b einen Axialschnitt in einer diametralen Schnittebene, - Fig. 2 bis 9
- jeweils eine weitere unterschiedliche Ausführung des Ventilatorrades, wobei jeweils in einer Teilfigur a) eine Perspektivansicht und in einer Teilfigur b) eine Seitenansicht dargestellt sind, und
- Fig. 10
- eine weitere Perspektivansicht eines erfindungsgemäßen Ventilatorrades beispielhaft in einer Ausführung wie in
Fig. 4a in einem vergrößerten Maßstab zur weiteren Erläuterung der Erfindung.
- Fig. 1
- a first embodiment of a fan according to the invention, in
Fig. 1a a perspective view and inFig. 1b an axial section in a diametrical section plane, - Fig. 2 to 9
- in each case a further different embodiment of the fan wheel, wherein in each case a part of a) a perspective view and in a partial figure b) a side view are shown, and
- Fig. 10
- a further perspective view of a fan according to the invention by way of example in an embodiment as in
Fig. 4a on an enlarged scale for further explanation of the invention.
In allen Ausführungsbeispielen besteht ein erfindungsgemäßes, um eine Rotationsachse Z rotierend anzutreibendes Ventilatorrad 1 aus einer Deckscheibe 2 mit einer vorzugsweise im Wesentlichen zentrischen Einlassöffnung 4 zum Lufteintritt, einer in Achsrichtung Z gegenüberliegenden Bodenscheibe 6 und mehreren Ventilatorschaufeln 8. Diese Ventilatorschaufeln 8 sind zwischen der Bodenscheibe 6 und der Deckscheibe 2 angeordnet oder gänzlich oder bereichsweise durch eine bestimmte Formung von der Bodenscheibe 6 und/oder der Deckscheibe 2 gebildet (vgl.
Bei dem erfindungsgemäßen Ventilatorrad 1 ist es zunächst wesentlich, dass die Deckscheibe 2 oder die Bodenscheibe 6 oder aber jede der beiden Scheiben 2, 6 eine nicht-rotationssymmetrische Geometrie aufweist.In the case of the
Dazu sei an dieser Stelle auf die
Dabei ist aber zusätzlich der Verlauf der jeweils nicht-rotationssymmetrischen Scheibe 2 und/oder 6 in axialer Richtung an den jeweiligen Außenseiten von Bodenscheibe 6 und/oder Deckscheibe 2 über den gesamten Umfangsbereich (auch über die Schaufeln) hinweg punktstetig, d. h. mit abnehmendem Differenzwinkel α existiert ein Grenzwinkel αG > 0°, ab dem eine weitere Annäherung der beiden Radialschnitte E1 und E2 (
Im Gegensatz zu dem punktstetigen Verlauf in axialer Richtung Z kann erfindungsgemäß die Geometrieabweichung zweier unterschiedlicher, die Rotationsachse Z enthaltender Schnitte in radialer Richtung (Radius r in
Im Folgenden sollen die einzelnen Ausführungsbeispiele kurz genauer beschrieben werden.In the following, the individual embodiments will be briefly described in more detail.
Bei der Ausführung gemäß
Auch in der Ausführung gemäß
In
Die Ausführung gemäß
In
Die
Dies bedeutet, dass die Deckscheibe 2 hier einen stetigen Umfangsverlauf ohne Ecken oder sonstige Sprünge aufweist.This means that the
Entsprechendes gilt auch für die sehr ähnliche Ausführung gemäß
Die
Bei allen bisher beschriebenen Ausführungsformen entstehen durch die nicht-rotationssymmetrische Ausgestaltung geometrische Strukturen, die in Umfangsrichtung periodisch wiederkehrend ausgeführt sind. Es liegt aber ebenfalls im Rahmen der Erfindung, die geometrischen Strukturen so zu wählen, dass sie unregelmäßig in Form und/oder Anordnung sind.In all of the embodiments described so far, the non-rotationally symmetric design produces geometric structures which are periodically recurring in the circumferential direction. However, it is also within the scope of the invention to select the geometric structures so that they are irregular in shape and / or arrangement.
Dazu ist ein Ausführungsbeispiel in
Natürlich sind auch andere Ausführungen möglich, durch die sich eine in Umfangsrichtung unregelmäßige Geometrie von Deck- und/oder Bodenscheibe 2, 6 ergibt.Of course, other embodiments are possible by the results in a circumferentially irregular geometry of cover and / or
Für alle Ausführungsformen gilt, dass die Ventilatorschaufeln 8 einen beliebigen Verlauf aufweisen können. Beispielsweise können sie hinsichtlich der Rotationsrichtung vorwärts oder rückwärts gekrümmt sein.For all embodiments, the
Im Übrigen sind beliebige Kombinationen aller bisher beschriebenen Einzelmerkmale möglich.Incidentally, any combinations of all the individual features described so far are possible.
Die Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt, sondern umfasst auch alle im Sinne der Erfindung gleichwirkenden Ausführungen. Ferner ist die Erfindung bislang auch noch nicht auf die im jeweiligen unabhängigen Anspruch definierte Merkmalskombination beschränkt, sondern kann auch durch jede beliebige andere Kombination von bestimmten Merkmalen aller insgesamt offenbarten Einzelmerkmale definiert sein. Dies bedeutet, dass grundsätzlich praktisch jedes Einzelmerkmal des jeweiligen unabhängigen Anspruchs weggelassen bzw. durch mindestens ein an anderer Stelle der Anmeldung offenbartes Einzelmerkmal ersetzt werden kann. Insofern sind die Ansprüche lediglich als ein erster Formulierungsversuch für eine Erfindung zu verstehen.The invention is not limited to the illustrated and described embodiments, but also includes all the same in the context of the invention embodiments. Furthermore, the invention has hitherto not been limited to the combination of features defined in the respective independent claim, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of the respective independent claim can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claims are to be understood merely as a first formulation attempt for an invention.
Claims (10)
dadurch gekennzeichnet, dass die jeweils nicht-rotationssymmetrische Geometrie in axialer bzw. achsparalleler Richtung (Z) gesehen einen kontinuierlichen, punktstetigen Verlauf aufweist.Fan wheel (1) in a version as a radial or diagonal fan, consisting of a cover plate (2) with an inlet opening (4), a bottom plate (6) and more around the circumference of the inlet opening (4) and about a rotation axis (Z) around distributed fan blades (8), wherein the cover plate (2) and / or the bottom plate (6) have / have a non-rotationally symmetric geometry,
characterized in that the respective non-rotationally symmetric geometry seen in the axial or axially parallel direction (Z) has a continuous, punctiform course.
dadurch gekennzeichnet, dass diejeweilsnicht-rotationssymmetrische Geometrie zwischen zwei radialen, die Rotationsachse (Z) enthaltenden und beidseitig jeder Ventilatorschaufel (8) liegenden Schnitten über die Ventilatorschaufel (8) hinweg ohne Sprung ausgebildet ist.Fan wheel according to claim 1 or according to the preamble of claim 1,
characterized in that the respective non-rotationally symmetric geometry is formed between two radial cuts containing the axis of rotation (Z) and lying on each side of each fan blade (8) over the fan blade (8) without jumping.
dadurch gekennzeichnet, dass die jeweils nicht-rotationssymmetrische Geometrie in radialer Richtung (r) gesehen einen kontinuierlichen, punktstetigen Verlauf oder einen nicht-kontinuierlichen, sprungförmigen Verlauf aufweist.Fan wheel according to claim 1 or 2,
characterized in that the respective non-rotationally symmetrical geometry in the radial direction (r) seen a continuous, punctiform course or a non-continuous, crack-shaped course.
dadurch gekennzeichnet, dass die Deckscheibe (2) im Bereich eines die Einlassöffnung (4) umschließenden, axial vorstehenden Radeinlasses (12) nicht-rotationssymmetrisch in Richtung der Rotationsachse (Z) ausgebildet ist, wobei insbesondere der Radeinlass (12) eine wellenförmige Verlaufskontur mit abwechselnden Vorsprüngen und Vertiefungen aufweist.Fan wheel according to one of claims 1 to 3,
characterized in that the cover disc (2) in the region of the inlet opening (4) enclosing, axially projecting Radeinlasses (12) is non-rotationally symmetrical in the direction of the axis of rotation (Z), in particular the Radeinlass (12) has a wavy contour contour with alternating Having protrusions and depressions.
dadurch gekennzeichnet, dass die Deckscheibe (2) nicht-rotationssymmetrisch in Richtung der Rotationsachse (Z) ausgebildet ist, wobei die Deckscheibe (2) in Umfangsrichtung eine vorzugsweise wellenförmige Gestaltung aufweist.Fan wheel according to one of claims 1 to 4,
characterized in that the cover plate (2) is non-rotationally symmetrical in the direction of the axis of rotation (Z) is formed, wherein the cover plate (2) in the circumferential direction has a preferably wave-shaped design.
dadurch gekennzeichnet, dass die Bodenscheibe (6) nicht-rotationssymmetrisch in Richtung der Rotationsachse (Z) ausgebildet ist, wobei die Bodenscheibe (6) in Umfangsrichtung eine vorzugsweise wellenförmige Gestaltung aufweist.Fan wheel according to one of claims 1 to 5,
characterized in that the bottom disk (6) is non-rotationally symmetrical in the direction of the axis of rotation (Z) is formed, wherein the bottom disk (6) in the circumferential direction has a preferably wave-shaped design.
dadurch gekennzeichnet, dass die Deckscheibe (2) nicht-rotationssymmetrisch in Radiusrichtung (r) ausgebildet ist.Fan wheel according to one of claims 1 to 6,
characterized in that the cover plate (2) is non-rotationally symmetrical in the radius direction (r) is formed.
dadurch gekennzeichnet, dass die Bodenscheibe (6) nicht-rotationssymmetrisch in Radiusrichtung (r) ausgebildet ist.Fan wheel according to one of claims 1 to 7,
characterized in that the bottom plate (6) is non-rotationally symmetrical in the radius direction (r) is formed.
dadurch gekennzeichnet, dass die Ventilatorschaufeln (8) zumindest bereichsweise durch direkte Verbindung zwischen den entsprechend geformten Deck- und Bodenscheiben (2, 6) gebildet sind.Fan wheel according to one of claims 1 to 8,
characterized in that the fan blades (8) at least partially by direct connection between the correspondingly shaped cover and bottom discs (2, 6) are formed.
dadurch gekennzeichnet, dass diejeweilsnicht-rotationssymmetrische Geometrie bezüglich Form und/oder Anordnung in Umfangsrichtung periodisch wiederkehrend oder unregelmäßig ausgebildet ist.Fan wheel according to one of claims 1 to 9,
characterized in that the respective non-rotationally symmetric geometry with respect to shape and / or arrangement in the circumferential direction is periodically recurring or irregular.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09152661T PL2218917T3 (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal ventilator wheel |
DK09152661.6T DK2218917T3 (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal fan wheels |
ES09152661T ES2404073T3 (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal fan wheel |
SI200930571T SI2218917T1 (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal ventilator wheel |
EP09152661A EP2218917B1 (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal ventilator wheel |
PT91526616T PT2218917E (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal ventilator wheel |
CA2692134A CA2692134C (en) | 2009-02-12 | 2010-02-05 | Radial or diagonal fan wheel |
CN2010101109944A CN101825113B (en) | 2009-02-12 | 2010-02-08 | Radial or diagonal ventilator wheel |
US12/705,103 US8454317B2 (en) | 2009-02-12 | 2010-02-12 | Radial or diagonal fan wheel |
JP2010029011A JP5737666B2 (en) | 2009-02-12 | 2010-02-12 | Impellers used for centrifugal or mixed flow fans |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09152661A EP2218917B1 (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal ventilator wheel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2218917A1 true EP2218917A1 (en) | 2010-08-18 |
EP2218917B1 EP2218917B1 (en) | 2013-04-03 |
Family
ID=40887194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09152661A Active EP2218917B1 (en) | 2009-02-12 | 2009-02-12 | Radial or diagonal ventilator wheel |
Country Status (10)
Country | Link |
---|---|
US (1) | US8454317B2 (en) |
EP (1) | EP2218917B1 (en) |
JP (1) | JP5737666B2 (en) |
CN (1) | CN101825113B (en) |
CA (1) | CA2692134C (en) |
DK (1) | DK2218917T3 (en) |
ES (1) | ES2404073T3 (en) |
PL (1) | PL2218917T3 (en) |
PT (1) | PT2218917E (en) |
SI (1) | SI2218917T1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2363609A1 (en) * | 2010-02-26 | 2011-09-07 | ebm-papst Mulfingen GmbH & Co. KG | Radial or diagonal ventilator wheel |
US11649829B2 (en) | 2020-05-28 | 2023-05-16 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Impeller with a seamless connection of the impeller blades to a disc body |
DE102016121219B4 (en) | 2015-11-09 | 2024-07-25 | Denso Corporation | Radial blower |
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US8794196B2 (en) * | 2008-10-06 | 2014-08-05 | Husqvarna Zenoah Co., Ltd. | Chain saw |
KR101070136B1 (en) * | 2011-02-22 | 2011-10-05 | 이재웅 | Impeller including cylinder type vanes |
US10012236B2 (en) * | 2013-03-15 | 2018-07-03 | Regal Beloit America, Inc. | Fan |
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DE102013114609A1 (en) * | 2013-12-20 | 2015-06-25 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Radial impeller for a drum fan and fan unit with such a radial impeller |
US10036400B2 (en) | 2014-05-02 | 2018-07-31 | Regal Beloit America, Inc. | Centrifugal fan assembly and methods of assembling the same |
JP6429887B2 (en) * | 2014-09-09 | 2018-11-28 | 三菱電機株式会社 | Indoor unit for air conditioner and air conditioner |
CN104259161A (en) * | 2014-09-16 | 2015-01-07 | 芜湖市华益阀门制造有限公司 | Air drying device for inner surface cleaning machine |
KR101720491B1 (en) | 2015-01-22 | 2017-03-28 | 엘지전자 주식회사 | Centrifugal Fan |
USD821561S1 (en) * | 2016-03-21 | 2018-06-26 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Fan wheel |
USD949315S1 (en) | 2016-06-24 | 2022-04-19 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Vane damper with trailing edge |
EP3708847B1 (en) * | 2017-11-06 | 2023-08-30 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Centrifugal compressor and turbocharger comprising said centrifugal compressor |
CN108457897B (en) * | 2018-04-09 | 2024-07-05 | 广东美的制冷设备有限公司 | Centrifugal wind wheel and air conditioner indoor unit |
TWI724872B (en) * | 2020-04-17 | 2021-04-11 | 建準電機工業股份有限公司 | Centrifugal impeller and centrifugal fan including the same |
DE102022131248A1 (en) | 2022-11-25 | 2024-05-29 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Diagonal impeller with varying hub area |
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US11649829B2 (en) | 2020-05-28 | 2023-05-16 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Impeller with a seamless connection of the impeller blades to a disc body |
Also Published As
Publication number | Publication date |
---|---|
EP2218917B1 (en) | 2013-04-03 |
US8454317B2 (en) | 2013-06-04 |
JP2010185456A (en) | 2010-08-26 |
ES2404073T3 (en) | 2013-05-23 |
PL2218917T3 (en) | 2013-09-30 |
CN101825113B (en) | 2013-05-01 |
CA2692134C (en) | 2015-06-30 |
DK2218917T3 (en) | 2013-07-08 |
CA2692134A1 (en) | 2010-08-12 |
PT2218917E (en) | 2013-04-11 |
CN101825113A (en) | 2010-09-08 |
JP5737666B2 (en) | 2015-06-17 |
SI2218917T1 (en) | 2013-05-31 |
US20100202887A1 (en) | 2010-08-12 |
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