EP1617086A2 - Entretoise de support pour treillis de protection et méthode de fabrication - Google Patents

Entretoise de support pour treillis de protection et méthode de fabrication Download PDF

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Publication number
EP1617086A2
EP1617086A2 EP05014897A EP05014897A EP1617086A2 EP 1617086 A2 EP1617086 A2 EP 1617086A2 EP 05014897 A EP05014897 A EP 05014897A EP 05014897 A EP05014897 A EP 05014897A EP 1617086 A2 EP1617086 A2 EP 1617086A2
Authority
EP
European Patent Office
Prior art keywords
fan
support strut
bending
receiving
protective
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05014897A
Other languages
German (de)
English (en)
Other versions
EP1617086A3 (fr
EP1617086B1 (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.)
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP1617086A2 publication Critical patent/EP1617086A2/fr
Publication of EP1617086A3 publication Critical patent/EP1617086A3/fr
Application granted granted Critical
Publication of EP1617086B1 publication Critical patent/EP1617086B1/fr
Active 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 relates to a support strut for protective grille for fans and a method for their preparation.
  • 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, serving as support arms supporting struts, are usually welded.
  • the support struts can from Haamadelartig bent wire loops, as shown for example in DE 33 11 660 C2, exist. Its spatial shape receives the protective grid by a multiple bending of the support struts with different angles (DE 299 00 923 U1).
  • the protective grille on the wall, in which the fan is installed attached.
  • the support struts of the fan motor with its stator or its bearing plate with the protective grid is firmly screwed.
  • These joints have to endure a high load.
  • the bending moment which exerts the fan motor on the guard, the rotation caused by the moment and all other forces caused by the fan function, such as vibrations, arrival and Abbremsmomente u. a. transferred to the support struts of the protective grid. Therefore, both the support struts and their joints must be made particularly stable.
  • the supporting strut according to the invention with its characterizing features of claim 1 has the advantage that the required for attachment to or in a wall and for receiving the fan motor means no longer need to be attached as separately manufactured fasteners to the support strut by a joining process, but that they are already part of the support strut during their production.
  • the support bar made solely by the advantageous forming thus has immediately after completion of all bending operations at its two ends the respective required fastening means. As a result, neither welding operations nor special weld pretreatments are required for the coating, which considerably simplifies the production of the support strut.
  • a significant advantage is also that they are as a one-piece manufactured part can be coated without problems, so that corrosion due to a lack of coating in the critical areas of their installation with a wall ring or fan is avoided from the outset.
  • the support strut is a forming part, d. H. the receiving angle for receiving the fan and / or the bracket for mounting the protective grid on or in a wall are formed by bending operations on the flat profile.
  • This has the advantage that simple flat steel can be used as the starting material. This production variant is particularly favorable and thus also cost-saving.
  • the support strut may be a stamped part. This type of production will be selected if either bending devices for bending flat profiles over the high edge are not available or the material used does not allow bending over the high edge.
  • the support strut is punched in its the form of the protective grid determining main contour of a metal sheet, with length and subsequent arrangement of the respective recording or holding angle in the design of the stamped part (unwinding) must be considered. After punching recording or holding angle are only bent in their corresponding position.
  • the support strut consists of a casting. Since this type of production requires the production of a casting mold, however, it only makes sense if sufficient economic efficiency still exists.
  • a support strut which is the spatial shape of the Protective grid intended to recognize. It was made of a flat steel and has a long leg 1 and a short leg 2 bent at right angles to it over the high edge of the flat steel.
  • the long leg 1 is angled twice in front of its free end by the same angle, but in opposite directions over the high edge. This gives the guard along its radius two different heights, whereby it is adapted to the shape of the rotor blades, not shown here of the axial fan.
  • a receiving angle 3 for fixing the axial fan is formed, which is provided with a bore 4.
  • the receiving angle 3 is produced by two bending operations on the inner free end of the support strut.
  • the flat steel is bent at right angles over the high edge in the same direction as the short leg 2. This bent end is now bent over the material thickness of the flat steel by 90 °, which is apparent from FIGS. 2 and 3.
  • the stretched length of this free end of the flat steel required before the bending operations can be precisely calculated. Due to the exact right-angled bending of the flat steel over the high edge of the Auf.cwinkel 3 is after the second bending process also exactly perpendicular to the flat profile.
  • This arrangement of receiving angle 3 and bracket 5 of the support strut is required when the mounting plane runs on or in the wall parallel to the mounting plane of the axial fan, which is particularly apparent from Figs. 2 and 3 can be seen.
  • the support strut can be designed as shown in FIGS. 4 to 6.
  • this support strut also consists of a long limb 1 'and a short limb 2' bent at an obtuse angle to it via the high edge of the flat steel.
  • the long leg 1 ' is in contrast to the support strut acc. Fig. 1 just angled.
  • the bending method for producing the support struts described in these two embodiments are technologically very advantageous because only flat steel is used as the starting material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP05014897A 2004-07-16 2005-07-08 Entretoise de support pour treillis de protection et méthode de fabrication Active EP1617086B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004034587A DE102004034587A1 (de) 2004-07-16 2004-07-16 Tragstrebe für Schutzgitter und Verfahren zu ihrer Herstellung

Publications (3)

Publication Number Publication Date
EP1617086A2 true EP1617086A2 (fr) 2006-01-18
EP1617086A3 EP1617086A3 (fr) 2007-01-10
EP1617086B1 EP1617086B1 (fr) 2008-10-22

Family

ID=35058766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05014897A Active EP1617086B1 (fr) 2004-07-16 2005-07-08 Entretoise de support pour treillis de protection et méthode de fabrication

Country Status (3)

Country Link
EP (1) EP1617086B1 (fr)
AT (1) ATE412120T1 (fr)
DE (2) DE102004034587A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008014702A1 (de) 2008-03-18 2009-09-24 Stadtmüller, Uwe Motoraufhängung für einen Axiallüfter und Verfahren zur Herstellung einer Motoraufhängung
EP2133574A3 (fr) 2008-06-12 2013-05-08 Uwe Stadtmüller Grille de protection spatiale pour ventilateurs axiaux et procédé de fabrication de la grille de protection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311660C2 (fr) 1983-03-30 1990-07-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE29900923U1 (de) 1999-01-20 2000-07-06 ebm Werke GmbH & Co., 74673 Mulfingen Anordnung zur schwingungsisolierenden Halterung eines Elektromotors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1871625A (en) * 1931-05-11 1932-08-16 Luff Arthur Seymore Support
US2728541A (en) * 1954-10-29 1955-12-27 Chelsea Products Inc Means to support a motor driven fan from a carrying panel
DE4337631A1 (de) * 1993-11-04 1995-05-11 Kloeckner Humboldt Deutz Ag Schutzvorrichtung für ein Gebläse einer Brennkraftmaschine
DE10111397B4 (de) * 2001-03-09 2010-04-15 Ebm-Papst Mulfingen Gmbh & Co. Kg Schutzgitter für Ventilatoren

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3311660C2 (fr) 1983-03-30 1990-07-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE29900923U1 (de) 1999-01-20 2000-07-06 ebm Werke GmbH & Co., 74673 Mulfingen Anordnung zur schwingungsisolierenden Halterung eines Elektromotors

Also Published As

Publication number Publication date
EP1617086A3 (fr) 2007-01-10
DE502005005737D1 (de) 2008-12-04
DE102004034587A1 (de) 2006-02-16
EP1617086B1 (fr) 2008-10-22
ATE412120T1 (de) 2008-11-15

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