EP1571350B2 - Dispositif de protection pour ventilateur - Google Patents

Dispositif de protection pour ventilateur Download PDF

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Publication number
EP1571350B2
EP1571350B2 EP05004847.9A EP05004847A EP1571350B2 EP 1571350 B2 EP1571350 B2 EP 1571350B2 EP 05004847 A EP05004847 A EP 05004847A EP 1571350 B2 EP1571350 B2 EP 1571350B2
Authority
EP
European Patent Office
Prior art keywords
support
fan
support braces
wire
safety guard
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.)
Not-in-force
Application number
EP05004847.9A
Other languages
German (de)
English (en)
Other versions
EP1571350A1 (fr
EP1571350B1 (fr
Inventor
Uwe Stadtmüller
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.)
STADTMUELLER, UWE
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34745439&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1571350(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to SI200530018T priority Critical patent/SI1571350T1/sl
Publication of EP1571350A1 publication Critical patent/EP1571350A1/fr
Application granted granted Critical
Publication of EP1571350B1 publication Critical patent/EP1571350B1/fr
Publication of EP1571350B2 publication Critical patent/EP1571350B2/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Definitions

  • the invention is based on a protective grille for fans and a method for its production.
  • Protective grids protect fan rotors, for example from axial fans, against external contact. They consist of generally arranged concentrically to the axis of rotation of the fan motor grid rings made of wire, which are attached to radially arranged support struts or support arms, usually welded. The support struts in turn consist of hairpin-like bent wire loops, as they are for example in the DE 33 11 660 C2 are shown. Its spatial shape receives the protective grid by repeatedly bending these wire loops at different angles ( DE 299 00 923 U1 ).
  • the protective grille on the wall, in which the fan is installed attached.
  • a screw on the hairpin-like bent so the outer circle of the protective grid descriptive end of the support struts inserted through the wire loop and bolted to the wall.
  • the inner circle of the protective grating end of the support struts of the fan motor with its stator bush or its bearing plate with the protective grid is firmly screwed.
  • the entire protective grid is coated, usually powder-coated.
  • the coating must be closed, ie no areas should remain uncoated, because such uncoated areas cause corrosion.
  • Such hidden spots, which are difficult or impossible to reach from the coating are present at the mounting locations of the support struts for the fan motor.
  • the support struts which terminate here as two parallel wires, provided on both sides with mounting plates, which connect the two wires together for technological reasons.
  • the Mounting pads are welded to the ends of the two wires.
  • a cavity, into which the coating material is difficult to form is formed between the attachment plates.
  • Another disadvantage is that attaching the metal plate associated with an additional technological effort.
  • the erfmdungsgemäJ.ie guard with its characterizing features of claim 1 has the advantage that the support struts are designed at least at the attachment point for the fan motor constructive so that they have a wide contact surface for the bearing plate or the stator, but no hidden areas have more. As a result, the critical attachment points can be completely coated in a simple manner, so that corrosion of the support struts due to a lack of coating from the outset is avoided.
  • At least the support struts receiving the fan are formed as endless loops, ie they are completely closed, so also the attachment point for the fan motor is just like her opposite end, which is attached to a wall, designed hairpin-like.
  • the wide contact surface for the Stator bush or the bearing plate is achieved by a flattening of the inner hairpin-like bent end of the support strut. This flattening also prevents the steel wire of the support strut, which is harder than the material of the bearing plate or the stator bushing of the fan motor, from pressing into the stator bushing or the end shield at the attachment points, as a result of which the fan motor would become loose.
  • the flattening of the at least inner end of the support struts is also technologically much easier than the welding of the metal plate.
  • the outer hairpin-like bent end which is fastened to the wall, have a flattening, whereby in this area also a better investment of the support strut on the wall or the fastening means is achieved on the support struts.
  • the cross section of the two parallel legs of the support strut at its flattened end is equal to its output cross-section.
  • the end cross-section present after the flattening may of course also be smaller, as long as the strength requirements of the connection of the support struts to the fan or the wall are still met.
  • the flattening of the inwardly pointing hairpin-like curved end of the support strut may be present on one side or on both sides.
  • a one-sided flattening it goes without saying that the side of the support struts bearing against the bearing plate or the stator bushing of the fan must be flattened.
  • a two-sided flattening has the advantage that the fastening means used, for example, the screw or the nut rests on a flat surface.
  • the flattened surface of the inner end of the support strut as viewed in plan view, have a rectangular shape, d. H. the U-shaped course of the hairpin-like end of the support strut is straightened on the outside. This can be advantageous in cases in which the mounting surface of bearing plate or stator bushing is relatively small and would disturb the round outlet of the support struts here.
  • the inventive method for producing the support struts according to claim 7 has the advantage that the support strut much easier, namely without the use of additional parts to ensure a flat system for the fan, produce and coat.
  • the wire is formed into a closed loop and the two ends of the loop are butt or otherwise joined together at the joint, for example by welding.
  • the inwardly pointing hairpin-like bent end of at least the side of this support strut against which the fan is applied, is flattened.
  • the method is or are the hairpin-like ends of the support strut by a machining, such as milling or grinding produced.
  • a machining such as milling or grinding produced.
  • the flattening by a forming process for example by upsetting to produce.
  • a sufficiently large transition from the larger to the smaller cross-section will have to be provided here as well, but a flattening produced in this way has a considerably higher strength, since the engagement in the material structure during forming is substantially lower than during a machining operation.
  • a material compaction is deliberately generated during the forming process. This is possible, for example, in that the cross section of the support strut in the region of the flattening, that is to say after the forming process, is smaller than the outgoing cross section.
  • the flattening of the or the ends of the support strut takes place after attaching the grid rings on the support struts in a single operation. This can be quite advantageous in terms of production engineering since the production time is reduced when using a multiple tool.
  • a support strut 1 which determines the spatial shape of the protective grid, can be seen.
  • a plurality of support struts 1 are usually arranged at the same angle radially to each other and attached to them grid rings. It consists, as of Fig. 2 recognizable, from a haarnadclartig bent closed Drahtschlaufc, wherein the ends of the wire in the region of the parallel course of the two wire legs are butt welded together. The connection point is indicated by a weld 2.
  • the wire loop has a long, dull angled leg 3 and a short, perpendicular to the long leg 1 angled leg 4, whose end is again bent at right angles, on.
  • an eyelet 5 By the latter angulation deprives, as from Fig. 2 recognizable, an eyelet 5.
  • the eyelets 5 are therefore on an outer circle. With them, the protective grid is attached to a wall having an opening for the fan.
  • the depth of the protective grille is determined, which depends essentially on the installation depth of the fan.
  • the long, dull-angled leg 3 is angled once more at its free end, this short angled part 6 runs parallel to the eyelet 5.
  • a flattened eyelet 7 ie the measured perpendicular to the plane formed by the wire loop thickness of the wire is less at this end than in its remaining course.
  • the flattened eyelets 7 are located on an inner circle of the protective grid. On them, the fan, for example, with its stator or its end shield, attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Compressor (AREA)

Claims (11)

  1. Dispositif de protection pour ventilateur, constitué de traverses de support (1) disposées essentiellement radialement, sur lesquelles des anneaux de grillage généralement concentriques les uns par rapport aux autres sont fixés, moyennant quoi les traverses de support (1) sont constituées de boucles de fil le cas échéant repliées, et au moins sur une partie des traverses de support (1) à leur extrémité interne, au moins une surface plane est prévue pour le positionnement du ventilateur,
    caractérisé en ce que
    au moins les traverses de support (1) pouvant être reliées au ventilateur sont constituées d'une boucle de fil fermée, également recourbée à son extrémité interne en forme de U, de telle sorte que les deux extrémités (5,7) des traverses de support (1) sont réalisées comme des épingles à cheveux et en ce que au moins l'extrémité interne (7) d'au moins le côté des traverses de support (1), sur laquelle le ventilateur vient reposer est aplatie.
  2. Dispositif de protection selon la revendication 1,
    caractérisé en ce que
    la section transversale des deux pans s'étendant en parallèle des traverses de support (1) est similaire à leur extrémité (7) aplatie respective à la section transversale de sortie des pans de la traverse de support (1).
  3. Dispositif de protection selon la revendication 1,
    caractérisé en ce que
    la section transversale des deux pans s'étendant en parallèle des traverses de support (1) est plus petite à leur extrémité aplatie respective (7) que la section transversale de sortie des pans de la traverse de support (1).
  4. Dispositif de protection selon la revendication 3,
    caractérisé en ce que
    le méplat de la, respectivement des extrémités (7) de la traverse de support (1) est formé par une réduction d'un côté de la section transversale du fil de la boucle de fil sur le côté du fil tourné vers le ventilateur.
  5. Dispositif de protection selon la revendication 3,
    caractérisé en ce que
    le méplat est formé par une réduction des deux côtés de la section transversale du fil.
  6. Dispositif de protection selon la revendication 1 à 5,
    caractérisé en ce que
    au moins l'extrémité aplatie interne (7) de la traverse de support (1) présente en vue de dessus une forme rectangulaire.
  7. Procédé de fabrication d'un dispositif de protection pour ventilateur, qui est constitué de traverses de support (1) disposées essentiellement radialement, le cas échéant repliées plusieurs fois, qui sont recourbées en boucles allongées à partir d'un fil étiré, avant que des anneaux de grillage disposés généralement concentriquement les uns par rapport aux autres soient fixés sur celles-ci, moyennant quoi au moins sur une partie des traverses de support (1), respectivement à leur extrémité interne au moins une surface plane pour la liaison avec le ventilateur est présente,
    caractérisé en ce que
    au moins les traverses de support (1) renfermant le ventilateur sont recourbées sous la forme d'une boucle fermée et les deux extrémités de fil sont reliées l'une à l'autre de manière à buter l'une sur l'autre bout à bout, de telle sorte que les deux extrémités (5,7) de la boucle de fil présentent une forme d'épingle à cheveu et en ce que au moins l'extrémité (7) recourbée vers l'intérieur de type épingle à cheveu d'au moins le côté de ces traverses de support (1), sur laquelle le ventilateur vient reposer est aplatie.
  8. Procédé selon la revendication 7,
    caractérisé en ce que
    l'aplatissement de la, respectivement des extrémités des traverses de support (1) est effectué par un usinage avec enlèvement de matière, par exemple un fraisage ou une rectification.
  9. Procédé selon la revendication 7,
    caractérisé en ce que
    l'aplatissement de la, respectivement des extrémités des traverses de support (1) est effectué par un usinage sans enlèvement de matière, par exemple un refoulement.
  10. Procédé selon la revendication 9,
    caractérisé en ce que
    lors de la fabrication sans enlèvement de matière du méplat dans cette région, un compactage du matériau a simultanément lieu.
  11. Procédé selon les revendications 7 à 10,
    caractérisé en ce que
    l'aplatissement de la, respectivement des extrémités (7) des traverses de support (1) est effectué après la fixation des anneaux de grillage sur les traverses de support (1) en une étape de travail unique.
EP05004847.9A 2004-03-05 2005-03-04 Dispositif de protection pour ventilateur Not-in-force EP1571350B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200530018T SI1571350T1 (sl) 2004-03-05 2005-03-04 Zaščitna mreža za ventilator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004011375 2004-03-05
DE102004011375A DE102004011375A1 (de) 2004-03-05 2004-03-05 Schutzgitter für Lüfter und Verfahren zu seiner Herstellung

Publications (3)

Publication Number Publication Date
EP1571350A1 EP1571350A1 (fr) 2005-09-07
EP1571350B1 EP1571350B1 (fr) 2007-02-21
EP1571350B2 true EP1571350B2 (fr) 2016-09-28

Family

ID=34745439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05004847.9A Not-in-force EP1571350B2 (fr) 2004-03-05 2005-03-04 Dispositif de protection pour ventilateur

Country Status (5)

Country Link
EP (1) EP1571350B2 (fr)
AT (1) ATE354732T1 (fr)
DE (2) DE102004011375A1 (fr)
ES (1) ES2282941T3 (fr)
SI (1) SI1571350T1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015004019A1 (de) * 2015-03-26 2016-09-29 Uwe Stadtmüller Schutzgitter; Verfahren zur Herstellung eines Schutzgitters für Lüfter
DE102016111516A1 (de) * 2016-06-23 2017-12-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Befestigungsstrebe für ein Lüfterschutzgitter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7202133U (de) † 1972-01-21 1972-04-13 Gebr Trox Gmbh Befestigungsarme fuer axialventilatoren
DE10003428A1 (de) † 1999-01-26 2000-12-21 Uwe Stadtmueller Schutzgitter für durch einen elektrischen Außenläufermotor angetriebenen Lüfter
DE10111397A1 (de) † 2001-03-09 2002-09-12 Ebm Werke Gmbh & Co Kg Schutzgitter für Ventilatoren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210164C2 (de) * 1982-03-19 1984-09-13 Rohde & Schwarz GmbH & Co KG, 8000 München Vorrichtung zum Befestigen eines Lüfters in einer Gehäusewand eines elektrischen Gerätes
DE3311660A1 (de) * 1983-03-30 1984-10-04 Siemens AG, 1000 Berlin und 8000 München Axialventilator
US4836751A (en) * 1988-07-25 1989-06-06 Liu Ssu Liu Detachable electric fan
DE4412193C1 (de) * 1994-04-08 1995-08-31 Guentner Gmbh Hans Antriebsmotoranordnung für Luftkühlerventilatoren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7202133U (de) † 1972-01-21 1972-04-13 Gebr Trox Gmbh Befestigungsarme fuer axialventilatoren
DE10003428A1 (de) † 1999-01-26 2000-12-21 Uwe Stadtmueller Schutzgitter für durch einen elektrischen Außenläufermotor angetriebenen Lüfter
DE10111397A1 (de) † 2001-03-09 2002-09-12 Ebm Werke Gmbh & Co Kg Schutzgitter für Ventilatoren

Also Published As

Publication number Publication date
SI1571350T1 (sl) 2007-08-31
DE102004011375A1 (de) 2005-09-22
EP1571350A1 (fr) 2005-09-07
DE502005000383D1 (de) 2007-04-05
EP1571350B1 (fr) 2007-02-21
ATE354732T1 (de) 2007-03-15
ES2282941T3 (es) 2007-10-16

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