EP2546528B1 - Wall ring for an axial ventilator - Google Patents

Wall ring for an axial ventilator Download PDF

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Publication number
EP2546528B1
EP2546528B1 EP20110173522 EP11173522A EP2546528B1 EP 2546528 B1 EP2546528 B1 EP 2546528B1 EP 20110173522 EP20110173522 EP 20110173522 EP 11173522 A EP11173522 A EP 11173522A EP 2546528 B1 EP2546528 B1 EP 2546528B1
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EP
European Patent Office
Prior art keywords
ronde
elements
frame
wall ring
ring according
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.)
Active
Application number
EP20110173522
Other languages
German (de)
French (fr)
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EP2546528A1 (en
Inventor
Thomas Sauer
Dieter Best
Sven BECK
Christian Weiss
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.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen 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 Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Priority to PT11173522T priority Critical patent/PT2546528E/en
Priority to EP20110173522 priority patent/EP2546528B1/en
Priority to ES11173522T priority patent/ES2444142T3/en
Priority to US13/493,271 priority patent/US9074611B2/en
Priority to CN201210203723.2A priority patent/CN102878103B/en
Publication of EP2546528A1 publication Critical patent/EP2546528A1/en
Application granted granted Critical
Publication of EP2546528B1 publication Critical patent/EP2546528B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips

Definitions

  • the present invention relates to a wall ring for an axial fan, consisting of a support frame, on which a Ronde-shaped nozzle is formed, in which the axial fan is arranged, wherein the support frame is composed of a plurality of frame members by means of positive and non-positive connection elements and the Ronde-shaped nozzle of several circumferentially arranged successively Ronde segments is formed, which are interconnected by positive and non-positive or material-locking connections or connecting elements.
  • Such a wall ring is from the US 4,018,297 known.
  • the frame members and the associated Ronde segments are integrally formed with each other.
  • a generic wall ring is also from the US 2011/006784511 known, wherein two frame members are used with molded Ronde segments.
  • the present invention is based on the object to provide a wall ring of the type described above, whose production is cheaper by the use of simple injection molds and has a smaller footprint in storage and during transport.
  • Ronde segments are connected by positive and non-positive or material-locking connections or connecting elements with the frame elements.
  • the support frame is composed of four frame elements and the round-shaped nozzle is assembled from at least eight, preferably twelve segments, so that the segments cause a 45 ° pitch or a 30 ° pitch of the ronde-shaped nozzle. It is particularly advantageous if the support frame has a rectangular, in particular square peripheral contour with four corners and a central opening, wherein four widened corner regions are formed and the frame members are formed by a division according to the two extending through the corners diagonals.
  • Fig. 1 to 10 are the same parts or functionally identical part with the same reference numerals. If certain described and / or removable from the drawings features of the wall ring according to the invention or its components are described only in connection with an embodiment, but these are also according to the invention, regardless of this embodiment as a single feature or in combination with other features of the individual embodiments essential and are claimed as belonging to the invention.
  • FIG. 1 an inventive wall ring is shown.
  • This consists of a support frame 1, on which a round-shaped nozzle 2 is attached via form and adhesion-connection elements 3.
  • the support frame 1 comprises a circular opening 4.
  • the support frame 1 in turn is composed of several frame members 6 connected to each other via form and force-locking connection elements 5. It is advantageous if the support frame 1 has a rectangular, in particular square outline contour, so that it has four in particular equal length frame edges 7 and four corners 8.
  • each frame member 6 has lateral connection side edges 10, which coincide in the assembled state with the diagonals d1 and d2 and coincide with the Frame edges 7 include an angle of 45 °.
  • the diameter of the opening 4 and the inner diameter of the ronde-shaped nozzle 2 are adapted to the diameter of a blade wheel of an axial fan to be mounted in a known manner. Furthermore, it can be seen that in the corner regions of the support frame 1 holes 33 are formed, are passed through the fasteners when the support frame 1 is attached to a housing wall or the like.
  • the connecting elements 5 are provided, which consist of locking elements 11, 12 and guide elements 13, 14, so that the frame members 6 can be positively and non-positively connected to each other.
  • the latching elements are formed as latching tongues 11 on a connection side edge 10 of a frame element 6 and cooperate with latching receptacles 12 which are formed on the connection side edge 10 of the other, adjacent frame element 6.
  • the locking tongues 11 have a central opening 15, engage in the locking cam 16 of the locking receptacles 12 in the assembled state, wherein the locking tongues 11 between Both sides of the locking cam 16 integrally formed limiting projections 17 are performed.
  • the pin receptacles 14 have a one-sided open-edged passage opening 18.
  • the guide pin 13 has a guide extension 19, which passes through the open-edge region of the passage opening 18, so that a positive and frictional connection between the guide extension 19 and pin receptacle 14 is formed.
  • the 4 and 5 show the inventive design of the connecting elements 11, 12 and guide elements 13, 14th
  • two identical frame elements 6 result twice per support frame 1.
  • Another advantage is that this design results in a simple storage of stock and the transport volume is very low.
  • the frame elements 6 have in the region of their arcuate boundary edge 9 a plurality of perpendicular to its surface extending locking tongues 11, which cooperate with matched locking receptacles 12 on the circular-shaped nozzle 2.
  • These latching tongues 11 and latching receptacles 12 are formed corresponding to the connecting elements 11, 12 on the connection side edges 10, and also on the frame elements 6 in the region of the boundary edges 9.
  • the round-shaped nozzle 2 consists of a cylindrical portion 20 and an extending between this and the support frame 1, in the axial direction of its central longitudinal axis XX arcuately curved annular transition portion 21, so that there is a nozzle-shaped contour.
  • the ronde-shaped nozzle 2 is composed of several Ronde segments 22.
  • at least eight blank segments 22 are used, resulting in a 45 ° pitch.
  • the nozzle 2 consists of twelve individual Ronde segments 22, so that a 30 ° pitch exists is, which are connected to each other at their juxtaposed side edges 23, 24 in the region of the cylindrical portion 20 via connecting elements 25, 26.
  • the connecting elements 25, 26 consist of parallel to the side edge 23 extending, outwardly projecting guide rails 25 which can be inserted into a guide groove of a cross-sectionally U-shaped guide rail 26 on the side edge 24 of the adjacent Ronde segment 22.
  • Guiding elements 29, 30 are formed in the region of the transitional section 21, specifically on the adjacent side edges 23, 24, wherein the guide elements of the side edge 23 are formed of guide pins 29 and the corresponding guide elements on the side edge 24 are formed of pin holders 30. These guide elements 29, 30 may be formed again corresponding to the guide elements 13, 14.
  • the Ronde segments 22 have at the free end of their transition portion 21 on a circular arc-shaped side edge 31, which belongs to an end-side flat contact portion 32 with which the Ronde segment 22 rests on the support frame 1 in the edge region of the opening 4.
  • the locking receptacles 12 are formed on its side facing away from the support frame 1 side, which form a positive and non-positive connection with the locking tongues 11.
  • the round blank segments 22 according to the invention are all of identical construction, so that they can be manufactured with the same tool, for example by injection molding or vacuum drawing, which on the one hand, the manufacturing costs are low and on the other hand, a cost storage or storage results, and the transport costs can be significantly reduced.
  • the support frame 1 and the round-shaped nozzle 2 are first assembled from their individual frame elements 6 and Ronde segments 22, respectively then firmly connected to each other via the existing connection and guide elements 11, 12, 13, 14 and 25, 26, 29, 30, so that there is a closed, stable wall ring, see also Fig. 1 ,
  • the frame members 6 to be joined are aligned at their contact sides with a small height offset, so that the locking tongues 11 are arranged below the locking receptacles 12 and the guide pins 13 are below the respective pin receptacles 14. Then, the connecting elements 11, 12 and the guide elements 13, 14 are pushed into each other and so made the connection.
  • Fig. 9 It is shown how an axial fan 41 is fixed by means of support struts 42 on the support frame 1.
  • the support struts 42 are screwed by screws 43 on the support frame 1 by 1 screw inserts 34 are provided in the support frame, into which the screws 43 are screwed.
  • the frame members 6 and the Ronde segments 22 are made of plastic, advantageously made of polypropylene, which is in particular glass fiber reinforced, and are produced as injection molded parts or by vacuum drawing.
  • Fig. 10 is one of the Fig. 3 corresponding partial view of another embodiment of a support frame 1 according to the invention shown.
  • the frame elements 6 made of metal sheet blanks formed in their shape the frame elements 6, as to the Fig. 1-9 described, can correspond.
  • the connecting tab (n ) Is bent by a measure corresponding to the thickness of the blanks, so that the frame members 6 are aligned with each other and lie in the same plane.
  • connection or rivet connections 36 extending through the connecting strap (s) 35 and the respectively covered frame element 6 are provided for the mutual connection of the frame elements 6.
  • it can also be a connection by welding or cold deformation.
  • the connection described above, as between the frame elements 6, can also take place between the frame elements 6 and the round blank segments 22 of the neck 6, if in particular the blank segments 22 are likewise produced from sheet metal blanks.
  • the screw or rivet connections are then provided on the blank segments 22 in the region of the contact section 32.
  • a connection can be made by welding or cold working.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Connection Of Plates (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The ring has a circular connecting piece (2) formed on a supporting frame (1) that is assembled from a set of frame elements (6) by form and force-fitting connecting elements (3). An axial fan is arranged in the connecting piece, which is formed of circular segments (22) to be circumferentially arranged one after the other. The segments are connected to each other and with the frame by form and force-fitting or material-bonded connections or by other connecting elements. The frame includes a rectangular quadratic circumferential contour with four corners and a center opening.

Description

Die vorliegende Erfindung betrifft einen Wandring für einen Axialventilator, bestehend aus einem Tragrahmen, an dem ein rondenförmiger Stutzen ausgebildet ist, in dem der Axialventilator angeordnet wird, wobei der Tragrahmen aus mehreren Rahmenelementen mittels form- und kraftschlüssiger Verbindungselemente zusammengesetzt ist und der rondenförmige Stutzen aus mehreren umfangsgemäß hintereinander angeordneten Rondensegmenten gebildet ist, die durch form- und kraftschlüssige oder materialschlüssige Verbindungen bzw. Verbindungselemente miteinander verbunden sind.The present invention relates to a wall ring for an axial fan, consisting of a support frame, on which a Ronde-shaped nozzle is formed, in which the axial fan is arranged, wherein the support frame is composed of a plurality of frame members by means of positive and non-positive connection elements and the Ronde-shaped nozzle of several circumferentially arranged successively Ronde segments is formed, which are interconnected by positive and non-positive or material-locking connections or connecting elements.

Ein derartiger Wandring ist aus der US 4,018,297 bekannt. Hierbei sind die Rahmenelemente und die diesen zugeordneten Rondensegmente einstückig miteinander ausgebildet.Such a wall ring is from the US 4,018,297 known. Here, the frame members and the associated Ronde segments are integrally formed with each other.

Ein gattungsgemäßer Wandring ist auch aus der US 2011/006784511 bekannt, wobei zwei Rahmenelemente mit angeformten Rondensegmenten Verwendung finden.A generic wall ring is also from the US 2011/006784511 known, wherein two frame members are used with molded Ronde segments.

Aus der US 4,741,669 ist ein Wandring bekannt, bei dem der Tragrahmen und der rondenförmige Stutzen einteilig ausgebildet sind, jedoch der rondenförmige Stutzen teilweise in zwei miteinander verbindbare Stutzenabschnitte unterteilt ist.From the US 4,741,669 a wall ring is known in which the support frame and the round-shaped nozzle are integrally formed, however, the ronde-shaped nozzle is partially divided into two interconnectable nozzle sections.

Derartig bekannte Wandringe benötigen einerseits viel Lagerraum und andererseits auch ein erhebliches Transportvolumen und sind in der Fertigung auf Grund der aufwändigen Werkzeuge, die zum Spritzgießen der beispielsweise aus Kunststoff bestehenden Wandringe erforderlich sind, teuer in der Herstellung. Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, einen Wandring der eingangs beschriebenen Art zu schaffen, dessen Herstellung durch die Verwendung einfacher Spritzwerkzeuge kostengünstiger ist und der einen geringeren Platzbedarf bei der Lagerung und beim Transport aufweist.Such known wall rings need on the one hand a lot of storage space and on the other hand, a considerable transport volume and are expensive to manufacture due to the elaborate tools that are required for injection molding of existing plastic wall rings, for example. The present invention is based on the object to provide a wall ring of the type described above, whose production is cheaper by the use of simple injection molds and has a smaller footprint in storage and during transport.

Erfindungsgemäß wird dies dadurch erreicht, dass die Rondensegmente durch form- und kraftschlüssige oder materialschlüssige Verbindungen bzw. Verbindungselemente mit den Rahmenelementen verbunden sind.According to the invention this is achieved in that the Ronde segments are connected by positive and non-positive or material-locking connections or connecting elements with the frame elements.

Hierbei ist es insbesondere vorteilhaft, wenn der Tragrahmen aus vier Rahmenelementen zusammengesetzt ist und der rondenförmige Stutzen aus mindestens acht, vorzugsweise zwölf Segmenten zusammengefügt wird, so dass die Segmente eine 45 ° Teilung bzw. eine 30 ° Teilung des rondenförmigen Stutzens bedingen. Dabei ist es insbesondere vorteilhaft, wenn der Tragrahmen eine rechteckförmige, insbesondere quadratische Umfangskontur mit vier Ecken und eine zentrische Öffnung besitzt, wobei vier verbreiterte Eckbereiche ausgebildet sind und die Rahmenelemente durch eine Teilung gemäß den beiden durch die Ecken verlaufenden Diagonalen gebildet sind.It is particularly advantageous if the support frame is composed of four frame elements and the round-shaped nozzle is assembled from at least eight, preferably twelve segments, so that the segments cause a 45 ° pitch or a 30 ° pitch of the ronde-shaped nozzle. It is particularly advantageous if the support frame has a rectangular, in particular square peripheral contour with four corners and a central opening, wherein four widened corner regions are formed and the frame members are formed by a division according to the two extending through the corners diagonals.

Durch die Unterteilung des Tragrahmens in einzelne Rahmenelemente und die Unterteilung des rondenförmigen Stutzens in mehrere Rondensegmente ergibt sich eine sehr raumsparende Lagerung und ein geringes Transportvolumen, da die einzelnen Segmente zu Segmentpaketen zusammengefasst werden können und die Zusammensetzung des erfindungsgemäßen Wandrings erst vor dem Einbau des Axialventilators erfolgt. Durch die erfindungsgemäßen form- und kraftschlüssigen Verbindungen der einzelnen Elemente bzw. Segmente miteinander und untereinander ergibt sich einerseits ein einfaches Zusammensetzen der Einzelteile und darüberhinaus eine sehr robuste Verbindung, die die erforderlichen Haltekräfte aufnehmen kann.By dividing the support frame into individual frame elements and the subdivision of the Ronde-shaped nozzle into a plurality Ronde segments results in a very space-saving storage and a low transport volume, since the individual segments can be combined into segment packets and the composition of the wall ring according to the invention takes place only before the installation of the axial fan , Due to the positive and non-positive connections of the individual elements or segments according to the invention with each other and with each other, on the one hand results in a simple assembly of the items and beyond a very robust connection that can accommodate the required holding forces.

Vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen enthalten und werden an Hand des in den beiliegenden Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
eine perspektivische Ansicht eines erfindungsgemäßen Wandrings,
Fig. 2
eine Ansicht eines erfindungsgemäßen Tragrahmens,
Fig. 3
eine Teilansicht des erfindungsgemäßen Tragrahmens gemäß Fig. 2 vor dem Zusammenfügen der Rahmenelemente,
Fig. 4
eine Teilansicht gemäß IV in Fig. 3,
Fig. 5
eine Ansicht entsprechend der Teilansicht gemäß Fig. 4, jedoch im zusammengesetzten Zustand der Rahmenelemente,
Fig. 6
eine Ansicht von zwei Rondensegmenten gemäß der Erfindung vor dem Zusammenfügen,
Fig. 7
eine Ansicht zweier Rondensegmente nach dem Zusammenfügen,
Fig. 8
eine Teilansicht zweier zusammengefügter Rahmenelemente und zweier zusammengefügter Rondensegmente vor der Verbindung zwischen dem Tragrahmen und dem rondenförmigen Stutzen,
Fig. 9
eine perspektivische Ansicht eines erfindungsgemäßen Wandrings mit in diesem angeordnetem Axialventilator
Fig. 10
eine Teilansicht einer weiteren erfindungsgemäßen Ausführung des Tragrahmens.
Advantageous embodiments of the invention are contained in the subclaims and will be explained in more detail with reference to the embodiment shown in the accompanying drawings. Show it:
Fig. 1
a perspective view of a wall ring according to the invention,
Fig. 2
a view of a support frame according to the invention,
Fig. 3
a partial view of the support frame according to the invention according to Fig. 2 before assembling the frame elements,
Fig. 4
a partial view according to IV in Fig. 3 .
Fig. 5
a view according to the partial view according to Fig. 4 but in the assembled state of the frame elements,
Fig. 6
a view of two Ronde segments according to the invention prior to assembly,
Fig. 7
a view of two blank segments after joining,
Fig. 8
a partial view of two assembled frame members and two assembled Ronde segments before the connection between the support frame and the Ronde-shaped nozzle,
Fig. 9
a perspective view of a wall ring according to the invention with arranged in this axial fan
Fig. 10
a partial view of another embodiment of the support frame according to the invention.

In den Fig. 1 bis 10 sind gleiche Teile bzw. funktionsgleiche Teil mit denselben Bezugszeichen gekennzeichnet. Sofern bestimmte beschriebene und/oder aus den Zeichnungen entnehmbare Merkmale des erfindungsgemäßen Wandrings oder seiner Bestandteile nur im Zusammenhang mit einem Ausführungsbeispiel beschrieben sind, sind diese aber auch gemäß der Erfindung unabhängig von diesem Ausführungsbeispiel als Einzelmerkmal oder aber auch in Kombination mit anderen Merkmalen der einzelnen Ausführungsbeispiele wesentlich und werden als zur Erfindung gehörig beansprucht.In the Fig. 1 to 10 are the same parts or functionally identical part with the same reference numerals. If certain described and / or removable from the drawings features of the wall ring according to the invention or its components are described only in connection with an embodiment, but these are also according to the invention, regardless of this embodiment as a single feature or in combination with other features of the individual embodiments essential and are claimed as belonging to the invention.

In Fig. 1 ist ein erfindungsgemäßer Wandring dargestellt. Dieser besteht aus einem Tragrahmen 1, an dem ein rondenförmiger Stutzen 2 über Form- und Kraftschluss-Verbindungselemente 3 befestigt ist. Der Tragrahmen 1 umfasst eine kreisförmige Öffnung 4. Der Tragrahmen 1 seinerseits ist aus mehreren miteinander über Form- und Kraftschluss-Verbindungselemente 5 verbundene Rahmenelemente 6 zusammengesetzt. Hierbei ist es vorteilhaft, wenn der Tragrahmen 1 eine rechteckige, insbesondere quadratische Umrisskontur besitzt, so dass er vier insbesondere gleich lange Rahmenkanten 7 aufweist sowie vier Ecken 8. Indem der Tragrahmen 1 gemäß seiner beiden Diagonalen d1, d2 durch die Ecken 8 in die vier Rahmenelemente 6 unterteil ist, entstehen vier baugleiche oder zweimal zwei baugleiche Rahmenelemente 6 mit einer inneren, entsprechend einem Viertelkreis gebogenen Begrenzungskante 9. Weiterhin weist jedes Rahmenelement 6 seitliche Verbindungsseitenkanten 10 auf, die im zusammengefügten Zustand mit den Diagonalen d1 und d2 entsprechend zusammenfallen und mit den Rahmenkanten 7 einen Winkel von 45 ° einschließen. Der Durchmesser der Öffnung 4 und der Innendurchmesser des rondenförmigen Stutzens 2 sind an den Durchmesser eines Schaufelrades eines zu montierenden Axialventilators in bekannter Weise angepasst. Weiterhin ist zu erkennen, dass in den Eckbereichen des Tragrahmens 1 Löcher 33 ausgebildet sind, durch die Befestigungselemente hindurchgeführt werden, wenn der Tragrahmen 1 an einer Gehäusewand oder dergleichen befestigt wird.In Fig. 1 an inventive wall ring is shown. This consists of a support frame 1, on which a round-shaped nozzle 2 is attached via form and adhesion-connection elements 3. The support frame 1 comprises a circular opening 4. The support frame 1 in turn is composed of several frame members 6 connected to each other via form and force-locking connection elements 5. It is advantageous if the support frame 1 has a rectangular, in particular square outline contour, so that it has four in particular equal length frame edges 7 and four corners 8. By the support frame 1 according to its two diagonals d1, d2 through the corners 8 in the four Further, each frame member 6 has lateral connection side edges 10, which coincide in the assembled state with the diagonals d1 and d2 and coincide with the Frame edges 7 include an angle of 45 °. The diameter of the opening 4 and the inner diameter of the ronde-shaped nozzle 2 are adapted to the diameter of a blade wheel of an axial fan to be mounted in a known manner. Furthermore, it can be seen that in the corner regions of the support frame 1 holes 33 are formed, are passed through the fasteners when the support frame 1 is attached to a housing wall or the like.

Im Randbereich der Verbindungsseitenkanten 10 sind die Verbindungselemente 5 vorgesehen, die aus Rastelementen 11, 12 und Führungselementen 13, 14 bestehen, so dass die Rahmenelemente 6 form- und kraftschlüssig miteinander verbunden werden können. Die Rastelemente sind als Rastzungen 11 an einer Verbindungsseitenkante 10 eines Rahmenelementes 6 ausgebildet und wirken mit Rastaufnahmen 12 zusammen, die an der Verbindungsseitenkante 10 des anderen, angrenzenden Rahmenelementes 6 ausgebildet sind. Entsprechendes gilt für die Führungselemente 13, 14, die als Führungszapfen 13 des einen Rahmenelementes 6 im Bereich seiner Verbindungsseitenkante 10 mit zugehörigen Zapfenaufnahmen 14 an der Verbindungsseitenkante 10 des anderen Rahmenelementes 6 zusammenwirken. Die Rastzungen 11 weisen eine mittlere Öffnung 15 auf, in die Rastnocken 16 der Rastaufnahmen 12 im zusammengefügten Zustand einrasten, wobei die Rastzungen 11 zwischen beidseitig des Rastnockens 16 angeformten Begrenzungsvorsprüngen 17 geführt werden. Die Zapfenaufnahmen 14 weisen eine einseitig randoffene Durchgangsöffnung 18 auf. Der Führungszapfen 13 besitzt einen Führungsfortsatz 19, der durch den randoffenen Bereich der Durchgangsöffnung 18 verläuft, so das eine Form- und Kraftschlussverbindung zwischen Führungsfortsatz 19 und Zapfenaufnahme 14 entsteht.In the edge region of the connecting side edges 10, the connecting elements 5 are provided, which consist of locking elements 11, 12 and guide elements 13, 14, so that the frame members 6 can be positively and non-positively connected to each other. The latching elements are formed as latching tongues 11 on a connection side edge 10 of a frame element 6 and cooperate with latching receptacles 12 which are formed on the connection side edge 10 of the other, adjacent frame element 6. The same applies to the guide elements 13, 14, which cooperate as a guide pin 13 of a frame member 6 in the region of its connection side edge 10 with associated pin receivers 14 on the connection side edge 10 of the other frame member 6. The locking tongues 11 have a central opening 15, engage in the locking cam 16 of the locking receptacles 12 in the assembled state, wherein the locking tongues 11 between Both sides of the locking cam 16 integrally formed limiting projections 17 are performed. The pin receptacles 14 have a one-sided open-edged passage opening 18. The guide pin 13 has a guide extension 19, which passes through the open-edge region of the passage opening 18, so that a positive and frictional connection between the guide extension 19 and pin receptacle 14 is formed.

Die Fig. 4 und 5 zeigen die erfindungsgemäße Ausgestaltung der Verbindungselemente 11, 12 und Führungselemente 13, 14.The 4 and 5 show the inventive design of the connecting elements 11, 12 and guide elements 13, 14th

Erfindungsgemäß sind somit die Rahmenelemente 6, insbesondere bei der quadratischen Ausführung, alle baugleich ausgeführt und können mit demselben Formwerkzeug, beispielsweise im Spritzgussverfahren hergestellt werden. Bei rechteckförmiger Ausführung ergeben sich pro Tragrahmen 1 zweimal zwei gleiche Rahmenelemente 6. Ein weiterer Vorteil besteht darin, dass sich durch diese Ausgestaltung eine einfache Lagerbevorratung ergibt und das Transportvolumen sehr gering ist. Weiterhin besitzen die Rahmenelemente 6 im Bereich ihrer kreisbogenförmigen Begrenzungskante 9 mehrere senkrecht zu ihrer Oberfläche verlaufende Rastzungen 11, die mit angepassten Rastaufnahmen 12 an dem rondenförmigen Stutzen 2 zusammenwirken. Diese Rastzungen 11 und Rastaufnahmen 12 sind entsprechend den Verbindungselementen 11, 12 an den Verbindungsseitenkanten 10, auch an den Rahmenelementen 6 im Bereich der Begrenzungskanten 9 ausgebildet. Der rondenförmige Stutzen 2 besteht aus einem zylinderförmigen Abschnitt 20 sowie einem zwischen diesem und dem Tragrahmen 1 verlaufenden, in axialer Richtung seiner mittleren Längsachse X-X bogenförmig gekrümmten, ringförmigen Übergangsabschnitt 21, so dass sich eine düsenförmige Kontur ergibt. Erfindungsgemäß ist der rondenförmige Stutzen 2 aus mehreren Rondensegmenten 22 zusammengefügt. Vorteilhafterweise werden mindestens acht Rondensegmente 22 verwendet, so dass sich eine 45 ° Teilung ergibt. Im dargestellten bevorzugten Ausführungsbeispiel besteht der Stutzen 2 aus zwölf einzelnen Rondensegmenten 22, so dass eine 30 ° Teilung vorhanden ist, die an ihren aneinander liegenden Seitenkanten 23, 24 im Bereich des zylinderförmigen Abschnitts 20 jeweils über Verbindungselemente 25, 26 miteinander verbunden werden. Die Verbindungselemente 25, 26 bestehen aus parallel zur Seitenkante 23 verlaufende, nach außen abstehende Führungsleisten 25, die in eine Führungsnut einer im Querschnitt U-förmigen Führungsschiene 26 an der Seitenkante 24 des angrenzenden Rondensegmentes 22 eingeschoben werden kann. Im Bereich des Übergangsabschnitts 21 sind Führungselemente 29, 30 ausgebildet, und zwar an den angrenzenden Seitenkanten 23, 24, wobei die Führungselemente der Seitenkante 23 aus Führungszapfen 29 und die korrespondierenden Führungselemente an der Seitenkante 24 aus Zapfenaufnahmen 30 gebildet sind. Diese Führungselemente 29, 30 können wieder entsprechend den Führungselementen 13, 14 ausgebildet sein.According to the invention, therefore, the frame elements 6, in particular in the square design, all constructed identical and can be made with the same mold, for example by injection molding. In the case of a rectangular design, two identical frame elements 6 result twice per support frame 1. Another advantage is that this design results in a simple storage of stock and the transport volume is very low. Furthermore, the frame elements 6 have in the region of their arcuate boundary edge 9 a plurality of perpendicular to its surface extending locking tongues 11, which cooperate with matched locking receptacles 12 on the circular-shaped nozzle 2. These latching tongues 11 and latching receptacles 12 are formed corresponding to the connecting elements 11, 12 on the connection side edges 10, and also on the frame elements 6 in the region of the boundary edges 9. The round-shaped nozzle 2 consists of a cylindrical portion 20 and an extending between this and the support frame 1, in the axial direction of its central longitudinal axis XX arcuately curved annular transition portion 21, so that there is a nozzle-shaped contour. According to the ronde-shaped nozzle 2 is composed of several Ronde segments 22. Advantageously, at least eight blank segments 22 are used, resulting in a 45 ° pitch. In the illustrated preferred embodiment, the nozzle 2 consists of twelve individual Ronde segments 22, so that a 30 ° pitch exists is, which are connected to each other at their juxtaposed side edges 23, 24 in the region of the cylindrical portion 20 via connecting elements 25, 26. The connecting elements 25, 26 consist of parallel to the side edge 23 extending, outwardly projecting guide rails 25 which can be inserted into a guide groove of a cross-sectionally U-shaped guide rail 26 on the side edge 24 of the adjacent Ronde segment 22. Guiding elements 29, 30 are formed in the region of the transitional section 21, specifically on the adjacent side edges 23, 24, wherein the guide elements of the side edge 23 are formed of guide pins 29 and the corresponding guide elements on the side edge 24 are formed of pin holders 30. These guide elements 29, 30 may be formed again corresponding to the guide elements 13, 14.

Die Rondensegmente 22 weisen am freien Ende ihres Übergangsabschnittes 21 eine kreisbogenförmige Seitenkante 31 auf, die zu einem endseitigen flachen Anlageabschnitt 32 gehört, mit dem das Rondensegment 22 auf dem Tragrahmen 1 im Randbereich der Öffnung 4 aufliegt. Auf diesem Anlageabschnitt 32 sind auf seiner von dem Tragrahmen 1 abgekehrten Seite die Rastaufnahmen 12 ausgebildet, die mit den Rastzungen 11 eine form- und kraftschlüssige Verbindung eingehen.The Ronde segments 22 have at the free end of their transition portion 21 on a circular arc-shaped side edge 31, which belongs to an end-side flat contact portion 32 with which the Ronde segment 22 rests on the support frame 1 in the edge region of the opening 4. On this contact portion 32, the locking receptacles 12 are formed on its side facing away from the support frame 1 side, which form a positive and non-positive connection with the locking tongues 11.

Die erfindungsgemäßen Rondensegmente 22 sind alle baugleich ausgeführt, so dass sie mit demselben Werkzeug beispielsweise durch Spritzgießen oder Vakuumziehen hergestellt werden können, wodurch einerseits die Herstellkosten niedrig sind und andererseits sich eine kostengünstige Bevorratung bzw. Lagerhaltung ergibt, und auch die Transportkosten wesentlich reduziert werden können.The round blank segments 22 according to the invention are all of identical construction, so that they can be manufactured with the same tool, for example by injection molding or vacuum drawing, which on the one hand, the manufacturing costs are low and on the other hand, a cost storage or storage results, and the transport costs can be significantly reduced.

Zur Montage des erfindungsgemäßen Wandrings werden zunächst der Tragrahmen 1 und der rondenförmige Stutzen 2 aus ihren einzelnen Rahmenelementen 6 bzw. Rondensegmenten 22 jeweils zusammengefügt und dann über die bestehenden Verbindungs- und Führungselemente 11, 12, 13, 14 bzw. 25, 26, 29, 30 miteinander fest verbunden, so dass sich ein geschlossener, stabiler Wandring ergibt, siehe hierzu auch Fig. 1. Zur Montage werden die zu verbindenden Rahmenelemente 6 an ihren Anlageseiten mit einem geringen Höhenversatz ausgerichtet, so dass die Rastzungen 11 unterhalb der Rastaufnahmen 12 angeordnet sind und die Führungszapfen 13 unter den jeweiligen Zapfenaufnahmen 14 liegen. Dann werden die Verbindungselemente 11, 12 und die Führungselemente 13, 14 ineinander geschoben und so die Verbindung hergestellt. Bei der Verbindung der Rondensegmente 22 folgt auch wieder eine Ausrichtung der beiden zu montierenden Rondensegmente 22 in einem derartigen Höhenversatz, dass die Führungsleiste 25 an einer Seitenkante eines Rondensegmentes 22 unterhalb der Führungsschiene 26 angeordnet ist und die Führungszapfen 29 unterhalb der Führungsaufnahmen 30. Dann wird das untere Rondensegment, das die Führungsleiste 25 aufweist, in Richtung auf das Rondensegment 22 mit der Führungsschiene 26 derart verschoben, dass die Führungsleiste 25 in die Führungsschiene 26 eingeführt wird und am Ende des Verbindungsvorgangs greifen die Führungszapfen 29 in die zugehörigen Zapfenaufnahmen 30 ein, bis es zu einer Anlage kommt. Hierzu kann auf die Fig. 6 und 7 verwiesen werden.To mount the wall ring according to the invention, the support frame 1 and the round-shaped nozzle 2 are first assembled from their individual frame elements 6 and Ronde segments 22, respectively then firmly connected to each other via the existing connection and guide elements 11, 12, 13, 14 and 25, 26, 29, 30, so that there is a closed, stable wall ring, see also Fig. 1 , For assembly, the frame members 6 to be joined are aligned at their contact sides with a small height offset, so that the locking tongues 11 are arranged below the locking receptacles 12 and the guide pins 13 are below the respective pin receptacles 14. Then, the connecting elements 11, 12 and the guide elements 13, 14 are pushed into each other and so made the connection. When connecting the Ronde segments 22 follows again an alignment of the two Ronde segments to be mounted 22 in such a height offset that the guide bar 25 is disposed on a side edge of a Ronde segment 22 below the guide rail 26 and the guide pin 29 below the guide receivers 30. Dann wird lower circular segment, which has the guide bar 25, in the direction of the Ronde segment 22 with the guide rail 26 so moved that the guide bar 25 is inserted into the guide rail 26 and at the end of the connecting operation, the guide pin 29 engage in the associated pin receptacles 30 until it comes to a plant. This can be done on the 6 and 7 to get expelled.

In Fig. 9 ist dargestellt, wie ein Axialventilator 41 mittels Tragstreben 42 am Tragrahmen 1 befestigt ist. Die Tragstreben 42 werden über Schrauben 43 am Tragrahmen 1 angeschraubt, indem im Tragrahmen 1 Schraubeinsätze 34 vorgesehen sind, in die die Schrauben 43 eingeschraubt werden. Die Rahmenelemente 6 und die Rondensegmente 22 bestehen aus Kunststoff, und zwar vorteilhafterweise aus Polypropylen, das insbesondere glasfaserverstärkt ist, und werden als Spritzgussteile bzw. durch Vakuumziehen hergestellt.In Fig. 9 It is shown how an axial fan 41 is fixed by means of support struts 42 on the support frame 1. The support struts 42 are screwed by screws 43 on the support frame 1 by 1 screw inserts 34 are provided in the support frame, into which the screws 43 are screwed. The frame members 6 and the Ronde segments 22 are made of plastic, advantageously made of polypropylene, which is in particular glass fiber reinforced, and are produced as injection molded parts or by vacuum drawing.

In Fig. 10 ist einer der Fig. 3 entsprechende Teilansicht einer weiteren Ausführungsform eines erfindungsgemäßen Tragrahmens 1 dargestellt. Hierbei sind die insbesondere vier Rahmenelemente 6 aus Metall-Blechzuschnitten gebildet, die in ihrer Form den Rahmenelementen 6, wie zu den Fig. 1 - 9 beschrieben, entsprechen können. Zur Verbindung der Rahmenelemente 6 miteinander im Bereich der Verbindungsseitenkanten 10 weist das eine Rahmenelement 6 entlang seiner Verbindungsseitenkante 10 eine Verbindungslasche 35 oder mehrere hintereinander liegende Verbindungslaschen 35 auf, die das angrenzende Rahmenelement 6 an seiner Verbindungsseitenkante 10 überdeckt bzw. überdecken, wobei die Verbindungslasche(n) 35 um ein Maß, das der Dicke der Blechzuschnitte entspricht, abgekröpft ist bzw. sind, so dass die Rahmenelemente 6 miteinander fluchten und in derselben Ebene liegen. Im Überdeckungsbereich der Verbindungslasche(n) 35 sind durch die Verbindungslasche(n) 35 und das jeweils überdeckte Rahmenelement 6 hindurch verlaufende Schraub- oder Nietverbindungen 36 zur gegenseitigen Verbindung der Rahmenelemente 6 vorgesehen. Es kann aber auch eine Verbindung durch Verschweißen oder Kaltverformung erfolgen. Alternativ zu der Verbindung gemäß den Fig. 1-9 kann die vorstehend beschriebene Verbindung, wie zwischen den Rahmenelementen 6, auch zwischen den Rahmenelementen 6 und den Rondensegmenten 22 des Stutzens 6 erfolgen, wenn insbesondere die Rondensegmente 22 ebenfalls aus Metallblech-Zuschnitten hergestellt sind. Hierbei sind dann an den Rondensegmenten 22 im Bereich des Anlageabschnitts 32 die Schraub- oder Nietverbindungen vorgesehen. Ebenfalls kann in diesem Bereich eine Verbindung durch Schweißen oder Kaltverformung erfolgen.In Fig. 10 is one of the Fig. 3 corresponding partial view of another embodiment of a support frame 1 according to the invention shown. Here are the particular four frame elements 6 made of metal sheet blanks formed in their shape the frame elements 6, as to the Fig. 1-9 described, can correspond. To connect the frame elements 6 together in the region of the connecting side edges 10, the one frame element 6 along its connecting side edge 10 on a connecting plate 35 or more connecting tabs 35 lying one behind the other, covering the adjacent frame member 6 at its connection side edge 10, wherein the connecting tab (n ) Is bent by a measure corresponding to the thickness of the blanks, so that the frame members 6 are aligned with each other and lie in the same plane. In the overlapping region of the connecting strap (s) 35, screw or rivet connections 36 extending through the connecting strap (s) 35 and the respectively covered frame element 6 are provided for the mutual connection of the frame elements 6. But it can also be a connection by welding or cold deformation. Alternatively to the compound according to the Fig. 1-9 For example, the connection described above, as between the frame elements 6, can also take place between the frame elements 6 and the round blank segments 22 of the neck 6, if in particular the blank segments 22 are likewise produced from sheet metal blanks. In this case, the screw or rivet connections are then provided on the blank segments 22 in the region of the contact section 32. Also, in this area, a connection can be made by welding or cold working.

An Stelle der zu den in den Fig. 1 - 9 dargestellten Verbindungselementen zwischen den Rahmenelementen 6 einerseits und den Rahmenelementen und den Rondensegmenten 22 andererseits können auch Schraub-, Niet-, Schweiß- und/oder Kaltformverbindungen vorgesehen sein, z. B. entsprechend der Ausgestaltung gemäß Fig. 10.In place of those in the Fig. 1-9 illustrated fasteners between the frame members 6 on the one hand and the frame members and the blank segments 22 on the other hand also screw, rivet, welded and / or cold-formed compounds may be provided, for. B. according to the embodiment according to Fig. 10 ,

Claims (18)

  1. A wall ring for an axial fan, consisting of a supporting frame (1), on which a ronde shaped connecting piece (2) is formed, with the axial fan arranged therein, wherein
    the supporting frame (1) is assembled from a plurality of frame elements (6) by means of form-locked and force-locked connecting elements (11, 12, 35, 36) and the ronde connecting piece (2) is formed of a plurality of ronde segments (22) arranged circumferentially one after the other, said segments being connected to each other by means of form-locked and force-locked or material-bonded connections or connecting elements (25, 26, 35, 36), characterised in that the ronde segments (22) are connected to the frame elements (6) by means of form-locked and force-locked or material-bonded connections or connecting elements (11, 12, 35, 36).
  2. A wall ring according to Claim 1, characterised in that the supporting frame (1) has a rectangular, in particular square, circumferential contour (7) with four corners (8) and a centre opening (15), with four broadened corner regions being formed, and the frame elements (6) being formed by means of a division along diagonals (d1, d2) which run through the corners of the supporting frame (1).
  3. A wall ring according to Claim 1 or 2, characterised in that the ronde shaped connecting piece (2) consists of a cylindrical section (20) and an annular transition section (21) which is curved in an arch in the axial direction of its longitudinal axis (X-X) and runs between said cylindrical section and the supporting frame (1).
  4. A wall ring according to one of Claims 1 to 3, characterised in that the ronde shaped connecting piece (2) is assembled from twelve ronde segments (22).
  5. A wall ring according to one of Claims 1 to 4, characterised in that the frame elements (6) and the ronde segments (22), in addition to the connecting elements (11, 12 and 25, 26, 35, 36), have guide elements (13, 14 and 29, 30) for reciprocal guiding.
  6. A wall ring according to one of Claims 1 to 5, characterised in that the frame elements (6) are structurally identical, and the ronde segments (22) are likewise formed structurally identically.
  7. A wall ring according to one of Claims 1 to 6, characterised in that the connecting elements (11, 12) are formed of locking lugs (11) on one lateral connecting edge (10) of a frame element (6), and of locking receiving members (12) on the lateral connecting edge (10) of the other adjacent frame element (6).
  8. A wall ring according to one of Claims 1 to 7, characterised in that the frame elements (6) in the edge region of their lateral connection edges (10) have guide elements composed of guide pins (13) and associated pin receiving members (14), the guide pins (13) of the one frame element (6) being formed in the region of its lateral connecting edge (10) and the pin receiving members (14) being formed on the lateral connecting edge (10) of the other frame element (6).
  9. A wall ring according to one of Claims 1 to 8, characterised in that the locking lugs (11) have a centre opening (15) into which locking cams (16) of the locking receiving member (12) engage in the assembled state.
  10. A wall ring according to one of Claims 1 to 9, characterised in that the ronde segments (22) have at the free end of their transition section (21) an arched side edge (31) which belongs to a contact section (32) which is flat on its end side, with which the ronde segment (22) rests on the supporting frame (1) in the edge region of the opening (4).
  11. A wall ring according to one of Claims 1 to 10, characterised in that the connecting elements (25, 26) of the ronde segments (22) consist of outwardly projecting guide bars (25) which run parallel to the side edge (23), said guide bars being inserted into a guide groove of a guide rail (26) with a U-shaped cross-section on the side edge of the adjacent ronde segment (22).
  12. A wall ring according to one of Claims 1 to 11, characterised in that the frame elements (6) in the region of their arched boundary edge (9) have a plurality of locking lugs (11) which run perpendicular to their surface and which interact with adapted locking receiving members (12) on the ronde shaped connecting piece (2).
  13. A wall ring according to Claim 12, characterised in that the locking receiving members (12) which interact with the locking lugs (11) are formed on the contact section (32) on its side facing away from the supporting frame (1).
  14. A wall ring according to one of Claims 11 to 13, characterised in that in the region of the transition section (21) guide elements (29, 30) are formed, namely on the adjacent side edges (23, 24), the elements of the side edge (23) consisting of guide pins (29), and the corresponding guide elements on the other side edge (24) consisting of pin receiving members (30).
  15. A wall ring according to one of Claims 1 to 14, characterised in that the frame elements (6) and the ronde segments (22) are made of plastics material, in particular of polypropylene, by means of injection moulding or vacuum forming.
  16. A wall ring according to one of Claims 1 to 11, characterised in that in order to connect the frame elements (6) to each other in the region of the lateral connecting edges (10) the one frame element (6) has one or a plurality of connecting tongues (35) which covers or cover the other frame element (6), and that in the overlap region the connection between the frame elements (6) is made by means of screw or rivet connections (36) or by means of welding or cold-forming.
  17. A wall ring according to one of Claims 1 to 11 and 16, characterised in that the frame elements (6) and the ronde segments (22) in the region of the contact section (32) are connected by means of screw or rivet connections (36) or by means of welding or cold-forming.
  18. A wall ring according to Claim 16 or 17, characterised in that the frame elements (6) and/or the ronde segments (22) consist of sheet-metal sections.
EP20110173522 2011-07-12 2011-07-12 Wall ring for an axial ventilator Active EP2546528B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PT11173522T PT2546528E (en) 2011-07-12 2011-07-12 Wall ring for an axial ventilator
EP20110173522 EP2546528B1 (en) 2011-07-12 2011-07-12 Wall ring for an axial ventilator
ES11173522T ES2444142T3 (en) 2011-07-12 2011-07-12 Wall ring for an axial fan
US13/493,271 US9074611B2 (en) 2011-07-12 2012-06-11 Wall ring for axial fan
CN201210203723.2A CN102878103B (en) 2011-07-12 2012-06-15 The wall ring of axial fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20110173522 EP2546528B1 (en) 2011-07-12 2011-07-12 Wall ring for an axial ventilator

Publications (2)

Publication Number Publication Date
EP2546528A1 EP2546528A1 (en) 2013-01-16
EP2546528B1 true EP2546528B1 (en) 2013-12-25

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Application Number Title Priority Date Filing Date
EP20110173522 Active EP2546528B1 (en) 2011-07-12 2011-07-12 Wall ring for an axial ventilator

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US (1) US9074611B2 (en)
EP (1) EP2546528B1 (en)
CN (1) CN102878103B (en)
ES (1) ES2444142T3 (en)
PT (1) PT2546528E (en)

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USD728090S1 (en) * 2012-10-11 2015-04-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Electric fan
DE202013100139U1 (en) * 2013-01-11 2014-04-15 Ebm-Papst Mulfingen Gmbh & Co. Kg Composite of a protective grid and a wall ring and fan with such a composite
US9835176B2 (en) 2013-04-05 2017-12-05 Acoustiflo Llc Fan inlet air handling apparatus and methods
USD771228S1 (en) * 2013-12-30 2016-11-08 Ebm-Papst Mulfingen Gmbh & Co. Kg Fan
USD764652S1 (en) * 2014-01-06 2016-08-23 Ebm-Papst Mulfingen Gmbh & Co. Kg Diffuser grid
USD775321S1 (en) * 2014-08-25 2016-12-27 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilation grid
USD761412S1 (en) * 2014-11-04 2016-07-12 Ebm-Papst Mulfingen Gmbh & Co. Kg Fan grid
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DE102019119626A1 (en) * 2019-07-19 2021-01-21 Ebm-Papst Mulfingen Gmbh & Co. Kg Housing ring of an axial fan
US20240052851A1 (en) * 2022-08-15 2024-02-15 Delta Electronics, Inc. Fan housing

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JPS59167919U (en) * 1983-04-27 1984-11-10 カルソニックカンセイ株式会社 fan shroud
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DK2488761T3 (en) * 2009-10-13 2016-04-18 Novenco As Axial fan and method for the manufacture of a blower tube thereof

Also Published As

Publication number Publication date
PT2546528E (en) 2014-01-07
CN102878103B (en) 2016-09-14
US20130017073A1 (en) 2013-01-17
EP2546528A1 (en) 2013-01-16
US9074611B2 (en) 2015-07-07
ES2444142T3 (en) 2014-02-24
CN102878103A (en) 2013-01-16

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