EP1154161B1 - Double entry radial fan rotor - Google Patents

Double entry radial fan rotor Download PDF

Info

Publication number
EP1154161B1
EP1154161B1 EP01110661A EP01110661A EP1154161B1 EP 1154161 B1 EP1154161 B1 EP 1154161B1 EP 01110661 A EP01110661 A EP 01110661A EP 01110661 A EP01110661 A EP 01110661A EP 1154161 B1 EP1154161 B1 EP 1154161B1
Authority
EP
European Patent Office
Prior art keywords
blades
support disc
impeller according
recesses
impeller
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.)
Expired - Lifetime
Application number
EP01110661A
Other languages
German (de)
French (fr)
Other versions
EP1154161A2 (en
EP1154161A3 (en
Inventor
Friedrich Köger
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.)
Gebhardt Ventilatoren GmbH and Co KG
Original Assignee
Gebhardt Ventilatoren 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 Gebhardt Ventilatoren GmbH and Co KG filed Critical Gebhardt Ventilatoren GmbH and Co KG
Publication of EP1154161A2 publication Critical patent/EP1154161A2/en
Publication of EP1154161A3 publication Critical patent/EP1154161A3/en
Application granted granted Critical
Publication of EP1154161B1 publication Critical patent/EP1154161B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04D29/28—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

Definitions

  • the invention relates to a double-flow centrifugal fan impeller in which air is supplied or sucked in from the two opposite axial sides and is removed or blown off radially with the features of the preamble of claim 1.
  • the object of the present invention is to simplify the manufacture of a double-flow centrifugal fan impeller to reduce manufacturing costs.
  • the advantages of the impeller according to the invention are, in particular, that compared to the known double-flow impellers, only a single support disk and half the number of blades are required. Since these blades cut the plane of the support disc, they can be more optimally connected to the support disc compared to the conventional construction, in which the blades are each butt welded to the support discs. Not only does this reduce the number of parts needed, it also simplifies assembly and helps reduce costs. By eliminating a support disc over the known embodiments, in which two single-flow wheels are assembled, the total weight is reduced, or the support plate can for the requirements of a double-flow Impeller be optimized.
  • the support disc By distributed over the circumference edge-side recesses, the support disc has a saw blade-like shape, wherein each one of the two limiting the recesses edge surface is designed as a receiving surface for a blade, which allows a more stable connection with the support plate over conventional constructions.
  • the receiving surfaces are advantageously extended in each case by a slot recess into which the respective blade can be used with its central end portion for easy pre-assembly before welding.
  • the receiving surfaces have projections for engagement in corresponding recesses of the blades. This allows even easier and better pre-assembly before welding, with even design of the projections and recesses even locking and clamping connections are possible without welding. Even adhesive bonds are made possible with good strength.
  • bent blades and / or curved blades and / or inclined blades can be used in the support plate plane.
  • the free ends of the blades are suitably welded or glued to the cover plates.
  • the support plate is provided in a conventional manner with a drive hub to allow a good connection with a drive shaft.
  • the support plate is expediently designed as a cost-effective metal plate.
  • twin-flow radial fan impeller shown in the figures is for installation in a double-flow centrifugal fan with volute, as shown in the prior art mentioned above.
  • the drive is carried out by an electric motor via a drive shaft, not shown.
  • the impeller consists of a centrally arranged support plate 10, which is made of a metal plate by punching, sawing and / or milling and distributed over the circumference edge triangular recesses 11 has, so that the support plate has a saw blade-like overall shape.
  • An eccentric arrangement of the support plate is also possible in principle.
  • the recesses 11 are bounded by two edge surfaces 12, 13, wherein each of the longer Edge surfaces 12 are formed as receiving surfaces for blades 14, one of which is shown separately in FIGS. 4 and 5.
  • the edge surfaces 12 are each extended to the interior of the support plate 10 through a slot 15.
  • a central end region of a blade 14, which is likewise provided with a slot 16 is inserted into this slot 15, so that the two slots 15, 16 mesh.
  • edge surfaces 12 each have a rectangular projection 17 which engages during assembly in a correspondingly shaped slot 18 of the blade 14, so that a secure centering is ensured.
  • the slots 15, 16 and 18 and the projection 17 can also be designed so that already takes place a locking and fixing of the blades 14 by latching and / or jamming on the support plate 10. Otherwise or in addition, the blades 14 are glued or welded during assembly with the support plate 10.
  • the one-piece blades 14 extend transversely to the plane of the support plate 10 to the two opposite sides. At the contact line with the support disk 10, the blades 14 are kinked, as is apparent from Fig. 5. In a simpler version of this kink can also be omitted. Furthermore, in alternative embodiments, the blades 14 may also be arched or inclined as a whole, whereby combinations of these various possibilities can also be realized.
  • a concentric hub 19 To connect the support plate 10 with a drive shaft, not shown, is a concentric hub 19, wherein known means for fixing the drive shaft for simplicity are not shown.
  • the drive shaft may be welded, keyed, pinned or bolted to the hub 19.
  • the two free end portions of the blades 14 on both sides of the support plate 10 have curvatures 20, 21, which are adapted to the curvatures of two annular cover plates 22, 23. These cover plates 22, 23 are applied after mounting the blades 14 from both sides of the bends 20, 21 and welded or glued thereto.
  • the cover plates have, according to FIG. 2, a diameter which reduces towards the axial outside and bounds the two axial inlet air openings of the impeller or of the centrifugal fan.
  • Fig. 2 only a single blade 14 is shown in the impeller for simplicity, while actually twelve distributed over the circumference blades 14 are provided in the embodiment.

Landscapes

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

Abstract

The support disc (10) has a bush (19) in its center and has e.g. 12 shovel-shaped blades (14) set at an angle round the periphery of the disc. There is a curved shroud (22) on either side of the disc, defining an axial air inlet for each side of the fan and radial outlets on each side of the support disc.

Description

Die Erfindung betrifft ein zweiflutiges Radialventilator-Laufrad, bei dem Luft von den beiden gegenüberliegenden axialen Seiten her zugeführt bzw. angesaugt und radial abgeführt bzw. ausgeblasen wird mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a double-flow centrifugal fan impeller in which air is supplied or sucked in from the two opposite axial sides and is removed or blown off radially with the features of the preamble of claim 1.

Bekannte zweiflutige Radialventilator-Laufräder werden durch Montage zweier einflutiger Radialventilator-Laufräder gebildet, indem diese jeweils mit ihren Tragscheibenseiten aneinander befestigt werden. Es entstehen dadurch mindestens die doppelten Kosten und der doppelte Herstellungsaufwand von einem einflutigen Laufrad. Hinzu kommt, dass zwei verschiedene getrennte einflutige Laufräder benötigt werden. Ein derartiges zweiflutiges Radialventilator-Laufrad ist beispielsweise im Prospekt der Anmelderin "Gebhardt Ventilator, Das Programm" 1995, Seite 11, dargestelltKnown double-flow centrifugal fan impellers are formed by mounting two single-flow centrifugal fan impellers by attaching them each with their support disk sides together. This results in at least twice the cost and twice the production cost of a single-flow impeller. In addition, two different separate single-flow impellers are needed. Such a double-flow centrifugal fan impeller, for example, in the brochure of the applicant "Gebhardt fan, The Program" 1995, page 11, shown

Aus der GB-A-2 142 985 ist ein zweiflutiges Radialventilator-Laufrad gemäß dem Oberbegriff des Anspruchs 1 bekannt. Bei der Montage dieses Laufrads werden die Schaufeln mittig mit der Tragscheibe verschweißt. Um dies durchführen zu können, müssten die einzelnen Schaufeln vor dem Verschweißen in dort nicht beschriebener Weise an der Tragscheibe fixiert werden, um einen exakten Sitz zu gewährleisten. Ein solches Fixieren mittels Klemmvorrichtungen ist jedoch arbeitsintensiv, zumal diese Vorrichtungen anschließend wieder entfernt werden müssen.From GB-A-2 142 985 a double-flow centrifugal fan impeller according to the preamble of claim 1 is known. When mounting this impeller, the blades are welded to the center of the support disc. In order to be able to do this, the individual blades would have to be fixed to the support disk in a manner not described there before welding in order to ensure an exact fit. However, such fixing by means of clamping devices is labor-intensive, especially These devices must then be removed again.

Aus der US-A-2 653 755 ist es hierzu bekannt, Schlitze in den Ausnehmungen der Tragscheibe vorzusehen, um die Schaufeln mittels einer winkelförmigen Tragplatte an diesen Ausnehmungen fixieren zu können. Diese winkelförmige Tragplatte muss dabei sowohl mit einem Randbereich des Schlitzes, wie auch mit der jeweiligen Schaufel verschweißt werden, was wiederum einen kostenintensiven Aufwand bedeutet.From US-A-2 653 755 it is known to provide slots in the recesses of the support disk to fix the blades by means of an angular support plate at these recesses can. This angular support plate must be welded to both an edge region of the slot, as well as with the respective blade, which in turn means a costly effort.

Die Aufgabe der vorliegenden Erfindung besteht darin, die Herstellung eines zweiflutiges Radialventilator-Laufrads zu vereinfachen, um die Herstellungskosten zu verringern.The object of the present invention is to simplify the manufacture of a double-flow centrifugal fan impeller to reduce manufacturing costs.

Diese Aufgabe wird erfindungsgemäß durch ein zweiflutiges Radialventilator-Laufrad mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a dual-flow centrifugal fan impeller with the features of claim 1.

Die Vorteile des erfindungsgemäßen Laufrads bestehen insbesondere darin, dass gegenüber den bekannten zweiflutigen Laufrädern nur noch eine einzige Tragscheibe und die halbe Zahl von Schaufeln benötigt werden. Da diese Schaufeln die Ebene der Tragscheibe schneiden, können sie optimaler mit der Tragscheibe verbunden werden im Vergleich zur herkömmlichen Konstruktion, bei der die Schaufeln jeweils stumpf an die Tragscheiben angeschweißt werden. Es verringert sich dadurch nicht nur die Zahl der benötigten Teile, sondern auch die Montage wird vereinfacht und trägt zur Kostenreduzierung bei. Durch den Wegfall einer Tragscheibe gegenüber den bekannten Ausführungen, bei denen zwei einflutige Laufräder zusammengesetzt werden, verringert sich das Gesamtgewicht, bzw. die Tragscheibe kann für die Erfordernisse eines zweiflutigen Laufrads optimiert werden. Durch über den Umfang verteilte randseitige Ausnehmungen besitzt die Tragscheibe eine sägeblattartige Gestalt, wobei jeweils eine der beiden die Ausnehmungen begrenzenden Randfläche als Aufnahmefläche für eine Schaufel ausgebildet ist, was eine stabilere Verbindung mit der Tragscheibe gegenüber herkömmlichen Konstruktionen ermöglicht. Dabei sind die Aufnahmeflächen in vorteilhafter Weise jeweils durch eine Schlitzausnehmung verlängert, in die zur einfachen Vormontage vor dem Schweißen die jeweilige Schaufel mit ihrem mittleren Endbereich eingesetzt werden kann.The advantages of the impeller according to the invention are, in particular, that compared to the known double-flow impellers, only a single support disk and half the number of blades are required. Since these blades cut the plane of the support disc, they can be more optimally connected to the support disc compared to the conventional construction, in which the blades are each butt welded to the support discs. Not only does this reduce the number of parts needed, it also simplifies assembly and helps reduce costs. By eliminating a support disc over the known embodiments, in which two single-flow wheels are assembled, the total weight is reduced, or the support plate can for the requirements of a double-flow Impeller be optimized. By distributed over the circumference edge-side recesses, the support disc has a saw blade-like shape, wherein each one of the two limiting the recesses edge surface is designed as a receiving surface for a blade, which allows a more stable connection with the support plate over conventional constructions. The receiving surfaces are advantageously extended in each case by a slot recess into which the respective blade can be used with its central end portion for easy pre-assembly before welding.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Laufrads möglich.The measures listed in the dependent claims advantageous refinements and improvements of claim 1 impeller are possible.

Die Aufnahmeflächen besitzen Vorsprünge zum Eingriff in entsprechende Ausnehmungen der Schaufeln. Dies ermöglicht eine noch einfachere und bessere Vormontage vor dem Schweißen, wobei bei entsprechender Ausbildung der Vorsprünge und Ausnehmungen sogar Rast- und Klemmverbindungen ohne Schweißen möglich sind. Auch Klebeverbindungen werden dadurch bei guter Festigkeit ermöglicht.The receiving surfaces have projections for engagement in corresponding recesses of the blades. This allows even easier and better pre-assembly before welding, with even design of the projections and recesses even locking and clamping connections are possible without welding. Even adhesive bonds are made possible with good strength.

Beim erfindungsgemäßen Laufrad können in der Tragscheibenebene geknickte Schaufeln und/oder gewölbte Schaufeln und/oder schräggestellte Schaufeln verwendet werden.In the impeller according to the invention bent blades and / or curved blades and / or inclined blades can be used in the support plate plane.

Die freien Enden der Schaufeln sind zweckmäßigerweise mit den Deckscheiben verschweißt oder verklebt.The free ends of the blades are suitably welded or glued to the cover plates.

Die Tragscheibe ist in an sich bekannter Weise mit einer Antriebsnabe versehen, um eine gute Verbindung mit einer Antriebswelle zu ermöglichen. Die Tragscheibe ist dabei zweckmäßigerweise als kostengünstige Blechplatte ausgebildet.The support plate is provided in a conventional manner with a drive hub to allow a good connection with a drive shaft. The support plate is expediently designed as a cost-effective metal plate.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht eines zweiflutigen Radialventilator-Laufrads als Ausführungsbeispiel der Erfindung,
Fig. 2
eine Schnittdarstellung dieses Laufrads mit zur Vereinfachung nur einer dargestellten Schaufel,
Fig. 3
eine Seitenansicht der Tragscheibe,
Fig. 4
eine Draufsicht auf eine separate Schaufel und
Fig. 5
eine Seitenansicht dieser Schaufel.
An embodiment of the invention is illustrated in the drawing and explained in more detail in the following description. Show it:
Fig. 1
a side view of a double-flow centrifugal fan impeller as an embodiment of the invention,
Fig. 2
a sectional view of this impeller with only one illustrated blade for simplicity,
Fig. 3
a side view of the support disk,
Fig. 4
a plan view of a separate blade and
Fig. 5
a side view of this blade.

Das in den Figuren dargestellte zweiflutige Radialventilator-Laufrad dient zum Einbau in einen zweiflutigen Radialventilator mit Spiralgehäuse, wie er im eingangs angegebenen Stand der Technik dargestellt ist. Der Antrieb erfolgt elektromotorisch über eine nicht dargestellte Antriebswelle.The twin-flow radial fan impeller shown in the figures is for installation in a double-flow centrifugal fan with volute, as shown in the prior art mentioned above. The drive is carried out by an electric motor via a drive shaft, not shown.

Das Laufrad besteht aus einer mittig angeordneten Tragscheibe 10, die aus einer Blechplatte durch Stanzen, Sägen und/oder Fräsen hergestellt wird und die über den Umfang verteilte randseitige dreieckförmige Ausnehmungen 11 besitzt, so dass die Tragscheibe insgesamt eine sägeblattartige Gestalt aufweist. Eine außermittige Anordnung der Tragscheibe ist ebenfalls prinzipiell möglich. Die Ausnehmungen 11 werden durch zwei Randflächen 12, 13 begrenzt, wobei jeweils die längeren Randflächen 12 als Aufnahmeflächen für Schaufeln 14 ausgebildet sind, von denen eine in den Fig. 4 und 5 separat dargestellt ist. Die Randflächen 12 sind jeweils zum Inneren der Tragscheibe 10 hin durch einen Schlitz 15 verlängert. Bei der Montage wird jeweils ein ebenfalls mit einem Schlitz 16 versehener mittiger Endbereich einer Schaufel 14 in diesen Schlitz 15 eingesetzt, so dass sich die beiden Schlitze 15, 16 verzahnen. Weiterhin besitzen die Randflächen 12 jeweils einen rechteckförmigen Vorsprung 17, der bei der Montage in einen entsprechend geformten Schlitz 18 der Schaufel 14 eingreift, so dass eine sichere Zentrierung gewährleistet ist. Die Schlitze 15, 16 und 18 und der Vorsprung 17 können auch so ausgestaltet sein, dass bereits eine Arretierung und Fixierung der Schaufeln 14 durch Verrastung und/oder Verklemmung an der Tragscheibe 10 erfolgt. Andernfalls oder ergänzend werden die Schaufeln 14 bei der Montage mit der Tragscheibe 10 verklebt oder verschweißt.The impeller consists of a centrally arranged support plate 10, which is made of a metal plate by punching, sawing and / or milling and distributed over the circumference edge triangular recesses 11 has, so that the support plate has a saw blade-like overall shape. An eccentric arrangement of the support plate is also possible in principle. The recesses 11 are bounded by two edge surfaces 12, 13, wherein each of the longer Edge surfaces 12 are formed as receiving surfaces for blades 14, one of which is shown separately in FIGS. 4 and 5. The edge surfaces 12 are each extended to the interior of the support plate 10 through a slot 15. During assembly, a central end region of a blade 14, which is likewise provided with a slot 16, is inserted into this slot 15, so that the two slots 15, 16 mesh. Furthermore, the edge surfaces 12 each have a rectangular projection 17 which engages during assembly in a correspondingly shaped slot 18 of the blade 14, so that a secure centering is ensured. The slots 15, 16 and 18 and the projection 17 can also be designed so that already takes place a locking and fixing of the blades 14 by latching and / or jamming on the support plate 10. Otherwise or in addition, the blades 14 are glued or welded during assembly with the support plate 10.

Die einstückigen Schaufeln 14 erstrecken sich quer zur Ebene der Tragscheibe 10 nach den beiden entgegengesetzten Seiten hin. An der Berührungslinie mit der Tragscheibe 10 sind die Schaufeln 14 geknickt, wie dies aus Fig. 5 hervorgeht. In einer einfacheren Ausführung kann dieser Knick auch entfallen. Weiterhin können die Schaufeln 14 in alternativen Ausgestaltungen auch gewölbt oder insgesamt schräggestellt sein, wobei auch Kombinationen dieser verschiedenen Möglichkeiten realisiert werden können.The one-piece blades 14 extend transversely to the plane of the support plate 10 to the two opposite sides. At the contact line with the support disk 10, the blades 14 are kinked, as is apparent from Fig. 5. In a simpler version of this kink can also be omitted. Furthermore, in alternative embodiments, the blades 14 may also be arched or inclined as a whole, whereby combinations of these various possibilities can also be realized.

Anstelle der dreieckförmigen Ausnehmungen 11 können auch ausschließlich Schlitze in einer kreisscheibenförmigen Tragscheibe 10 zur Aufnahme der Schaufeln 14 vorgesehen sein.Instead of the triangular recesses 11, only slots in a circular disk-shaped support disk 10 can be provided for receiving the blades 14.

Diese Schlitze erstrecken sich dann entsprechend der Randfläche 12 in Verlängerung der Schlitze 15.These slots then extend corresponding to the edge surface 12 in extension of the slots 15th

Zur Verbindung der Tragscheibe 10 mit einer nicht dargestellten Antriebswelle dient eine konzentrische Nabe 19, wobei an sich bekannte Mittel zur Fixierung der Antriebswelle zur Vereinfachung nicht dargestellt sind. Beispielsweise kann die Antriebswelle mit der Nabe 19 verschweißt, verkeilt, verstiftet oder verschraubt sein.To connect the support plate 10 with a drive shaft, not shown, is a concentric hub 19, wherein known means for fixing the drive shaft for simplicity are not shown. For example, the drive shaft may be welded, keyed, pinned or bolted to the hub 19.

Die beiden freien Endbereiche der Schaufeln 14 zu beiden Seiten der Tragscheibe 10 weisen Krümmungen 20, 21 auf, die an die Krümmungen von zwei ringförmigen Deckscheiben 22, 23 angepaßt sind. Diese Deckscheiben 22, 23 werden nach der Montage der Schaufeln 14 von beiden Seiten her an die Krümmungen 20, 21 angelegt und mit diesen verschweißt oder verklebt. Die Deckscheiben weisen gemäß Fig. 2 einen zur axialen Außenseite hin sich verringernden Durchmesser auf und begrenzen die beiden axialen Zuluftöffnungen des Laufrads bzw. des Radialventilators.The two free end portions of the blades 14 on both sides of the support plate 10 have curvatures 20, 21, which are adapted to the curvatures of two annular cover plates 22, 23. These cover plates 22, 23 are applied after mounting the blades 14 from both sides of the bends 20, 21 and welded or glued thereto. The cover plates have, according to FIG. 2, a diameter which reduces towards the axial outside and bounds the two axial inlet air openings of the impeller or of the centrifugal fan.

In Fig. 2 ist zur Vereinfachung nur eine einzige Schaufel 14 im Laufrad dargestellt, während tatsächlich im Ausführungsbeispiel zwölf über den Umfang verteilte Schaufeln 14 vorgesehen sind.In Fig. 2, only a single blade 14 is shown in the impeller for simplicity, while actually twelve distributed over the circumference blades 14 are provided in the embodiment.

Claims (10)

  1. Double-inlet centrifugal fan impeller with a single motor-driven support disc (10) carrying a multiplicity of blades (14) distributed over its periphery, wherein the blades (14) are held in recesses (11) of the support disc (10), extending outwards from the latter on opposite sides, wherein the two free ends of the single-piece blades (14) are joined in each case on either side of the support disc (10) by an annular cover plate (22, 23), and the two cover plates (22, 23) bound axial inflow orifices, wherein the support disc is shaped like a saw blade due to the edge-side recesses (11) distributed over the periphery, and wherein in each case one of the two edge areas bounding the recesses (11) is designed as mounting surface (12) for a blade (14), characterised in that each of the mounting surfaces (12) is extended by a slot recess (15) which allows the insertion of the middle end section of a blade (14).
  2. Impeller according to claim 1, characterised in that the mounting surfaces (12) have projections (17) to engage in corresponding recesses (18) of the blades (14).
  3. Impeller according to claim 1 or 2. characterised in that each blade (14) has on one edge a central slot (16) for engaging with the slot recess (15) of the support disc (10).
  4. Impeller according to any of the preceding claims, characterised in that the blades (14) are clamped, bonded, locked or welded to the support disc (10).
  5. Impeller according to any of the preceding claims, characterised in that the blades (14) are bent in the plane of the support disc.
  6. Impeller according to any of the preceding claims, characterised in that the blades are curved.
  7. Impeller according to any of the preceding claims, characterised in that the blades are set at an angle.
  8. Impeller according to any of the preceding claims, characterised in that the free ends of the blades (14) at both sides of the support disc (10) are welded or bonded to the cover plates (22, 23).
  9. Impeller according to any of the preceding claims, characterised in that the support disc (10) is provided with a driving hub (19).
  10. Impeller according to any of the preceding claims, characterised in that the support disc (10) is in the form of a sheet-metal plate.
EP01110661A 2000-05-10 2001-05-02 Double entry radial fan rotor Expired - Lifetime EP1154161B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20008428U DE20008428U1 (en) 2000-05-10 2000-05-10 Double-flow centrifugal fan impeller
DE20008428U 2000-05-10

Publications (3)

Publication Number Publication Date
EP1154161A2 EP1154161A2 (en) 2001-11-14
EP1154161A3 EP1154161A3 (en) 2003-02-12
EP1154161B1 true EP1154161B1 (en) 2006-06-14

Family

ID=7941332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110661A Expired - Lifetime EP1154161B1 (en) 2000-05-10 2001-05-02 Double entry radial fan rotor

Country Status (3)

Country Link
EP (1) EP1154161B1 (en)
AT (1) ATE330131T1 (en)
DE (2) DE20008428U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013103094U1 (en) * 2013-07-11 2014-10-13 Hürner-Funken GmbH Double-flow impeller

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1985705A (en) * 1932-01-30 1934-12-25 Prat Daniel Corp Fan blade
US2287853A (en) * 1941-09-26 1942-06-30 B F Sturtevant Co Centrifugal fan
US2653755A (en) * 1952-06-26 1953-09-29 Westinghouse Electric Corp Erosion resisting fan wheel
US2910224A (en) * 1953-11-17 1959-10-27 Coleman Co Blower structure and method of fabrication
GB1108932A (en) * 1964-05-04 1968-04-10 William Thomas Teagle Improvements in and relating to centrifugal fans
GB2142985B (en) * 1983-07-05 1987-01-28 Howden James & Co Ltd Impeller for a double inlet centrifugal fan

Also Published As

Publication number Publication date
ATE330131T1 (en) 2006-07-15
DE50110103D1 (en) 2006-07-27
DE20008428U1 (en) 2000-07-20
EP1154161A2 (en) 2001-11-14
EP1154161A3 (en) 2003-02-12

Similar Documents

Publication Publication Date Title
EP3030792B1 (en) Impeller for axial fans
DE202008002356U1 (en) compact fans
DE2639914C2 (en)
WO2013178341A2 (en) Electric motor drive, particularly a fan drive
EP2032858B1 (en) Blade wheel
DE102020203483A1 (en) Rotor of an electric motor
DE2106208B2 (en) Hub-shaft connection
EP1620632B1 (en) Hub-centered brush seal arrangement for use in a gas turbine
DE19751729A1 (en) Fan wheel
DE19754369B4 (en) Centrifugal turbine wheel, in particular for a heating, ventilation and / or air conditioning of a motor vehicle
EP1154161B1 (en) Double entry radial fan rotor
DE19742023B4 (en) Wheel
WO2020099106A1 (en) Diagonal fan having a housing
EP0261490A1 (en) Radial fan
DE102007024433A1 (en) Multi-stage Cone Fan Motor Assembly
DE102006001909B4 (en) Impeller of a fan
DE1957988B2 (en) Radial fan wheel for blower
EP1024296B1 (en) Impeller
DE3941691C2 (en)
DE10252538B4 (en) Blower wheel and method for its production
DE19847632B4 (en) Method of making a ring fan
EP2971788B1 (en) Bearing shield for a blower motor of a radial fan of a range hood
EP0052251A1 (en) Regenerative compressor
DE102011117826A1 (en) Cooking vapor fume hood, has vanes arranged concentric at axis, and motor-side covering plate comprising countersink unit protruded in axial direction in middle area of covering plates, and motor arranged partially in countersink unit
EP3203084B1 (en) Fan wheel and blower unit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7F 04D 17/16 B

Ipc: 7F 04D 29/28 A

17P Request for examination filed

Effective date: 20030425

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060614

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060614

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060614

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50110103

Country of ref document: DE

Date of ref document: 20060727

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060914

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060914

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061114

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070315

BERE Be: lapsed

Owner name: GEBHARDT VENTILATOREN G.M.B.H. & CO.

Effective date: 20070531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070531

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060915

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070502

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060614

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060614

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20120516

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120418

Year of fee payment: 12

Ref country code: FR

Payment date: 20120608

Year of fee payment: 12

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20131201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20150508

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50110103

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161201