EP2410187A1 - Agencement de grille de protection pour ventilateurs - Google Patents

Agencement de grille de protection pour ventilateurs Download PDF

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Publication number
EP2410187A1
EP2410187A1 EP11170176A EP11170176A EP2410187A1 EP 2410187 A1 EP2410187 A1 EP 2410187A1 EP 11170176 A EP11170176 A EP 11170176A EP 11170176 A EP11170176 A EP 11170176A EP 2410187 A1 EP2410187 A1 EP 2410187A1
Authority
EP
European Patent Office
Prior art keywords
protective grid
locking
latching
protective
arrangement 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.)
Granted
Application number
EP11170176A
Other languages
German (de)
English (en)
Other versions
EP2410187B1 (fr
Inventor
Thomas Heli
Alfred Korwin
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
Publication of EP2410187A1 publication Critical patent/EP2410187A1/fr
Application granted granted Critical
Publication of EP2410187B1 publication Critical patent/EP2410187B1/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
    • 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
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—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
    • F04D29/60—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

Definitions

  • the present invention relates according to the preamble of claim 1, a protective grid assembly for a fan, consisting of a rotating fan before or nachordnenden cover with an air passage opening and a closing in the region of the passage opening for contact protection with the cover over several the grid arranged distributed latching connections connected or connectable protective grid, each latching connection consists of a fixedly arranged in the passage opening and a latching arranged on the protective grid latching element.
  • the publication DE 20 2008 002 356 U1 describes various embodiments of a compact fan with a protective grid arrangement of the generic type described above.
  • the known compact fan has as a cover to a front panel with an air inlet opening, which is covered with a protective grid to protect against contact with the rotating fan parts or covered.
  • the protective grid can be locked by means of a clip connection with the front panel.
  • the protective grid in a first embodiment on its outer edge axially projecting locking elements which can be latched with locking lugs of the front panel.
  • the guard meshes only with the protruding locking elements something in the opening area, so that the grid itself protrudes significantly above the opening plane.
  • the attachment is solely dependent on the spring elasticity of the axially projecting locking elements.
  • the protective grid in another embodiment may also be integrally formed with the front panel and then also lie approximately in the opening plane.
  • the present invention is based on the object to improve a protective grid arrangement of the type described so that a safe and in particular play-free snap-fastening of the protective grid is ensured in the passage opening of the cover without protrusion of the protective grid.
  • the protective grid should be easy and quick to install and in particular also be solvable.
  • the invention provides that the locking elements are arranged on the outer edge of the protective grid in the lattice plane, wherein the protective grid in the region of each locking element is formed elastically deformable such that each locking element for locking and releasing the locking connection under regionally elastic deformation of the protective grid radially relative to the associated locking projection is movable.
  • this allows the protective grid to be inserted axially into the mouth region of the passage opening, wherein the axial insertion movement, the individual locking connections can be locked by axial, manual pressing, with the locking elements each in their entirety and without their own elastic deformation only under deformation of the adjacent protective grid Move radially radially and then engage the locking lugs form-locking detent radially outward.
  • a loosening of the locking connections is advantageously possible with the reverse direction of movement by manually in the region of each locking element, a radially inwardly acting release force is applied by the locking element to release the positive locking connection can move radially inward. In this way, the individual latching connections can be successively solved until the entire protective grid is released.
  • the invention achieves important advantages, in particular a very good and secure support by a correspondingly high radial spring force in the region of individual locking elements, wherein the height of this spring force can be specified by the material and shape-dependent deformation properties of the protective grid. Due to the recessed arrangement of the protective grid in the mouth region of the passage opening in combination with the configuration of the snap connections flow-favorable properties are also achieved, but in particular for applications without protective grid, because the passage opening is designed almost without protruding parts.
  • the protective grid seen in the circumferential direction between each two adjacent locking elements on a radial support portion with an end-side contact contour for radial and axial contact on an opening edge of the passage opening of the cover.
  • the support sections are axially and radially free of play with an elastic contact force on the opening edge of the passage opening.
  • This elastic contact force is also effected by a partially elastic deformation of the protective grid itself by the support sections first come into contact with the insertion of the protective grid, and only after further impressions under elastic deformation of the protective grid is the locking of the locking elements with the associated locking lugs.
  • a backlash is achieved by elastic bias, which disturbing noise (vibrations) can be avoided during operation.
  • a protective grid arrangement according to the invention 1 consists of a cover 2 with a particular circular air passage opening 4.
  • the cover 2 is preceded by a rotating fan, not shown, wherein the passage opening 4 forms an air inlet for the air sucked by the fan.
  • the cover 2 are also arranged downstream of a fan, wherein the passage opening 4 would form a blowout.
  • the impeller not shown, can be designed as axial fan, radial fan or diagonal fan.
  • a protective grid 6 can be fastened to the cover part 2 in the region of the passage opening 4.
  • a plurality of, in particular at least three circumferentially spaced latching connections 8 are provided.
  • Each of these latching connections 8 consists of a latching lug 10 fixedly arranged in the region of the passage opening 4 and a latching element 12 arranged on the protective lattice 6.
  • the locking elements 12 do not protrude axially from the protective grid 6, but are practically arranged on the outer edge of the protective grid 6 in the lattice plane.
  • the term "lattice plane” does not mean that the entire protective grid 6 must lie exactly in one plane, but rather the protective grid 6 can also be a lattice shape curved overall slightly convexly outwards. It is only essential that the locking elements 12 are arranged facing away from the outer edge of the protective grid 6 only radially outward.
  • the protective grid 6 is formed so resiliently deformable at least in the region of each locking element 12, that each locking element 12 for locking or releasing the locking connection 8 under regional elastic deformation of the protective grid 6, but without its own elastic deformation, radially relative to the associated locking projection 10 is movable. This radial movement is in Fig. 2 and 3 each illustrated by a double arrow 14.
  • the preferably circular passage opening 4 of the cover part 2 is preferably formed with an opening edge 16 which narrows in a nozzle-like manner from an outer side to an inner side facing the fan wheel.
  • This opening edge 16 has, in particular, a surface that is convexly curved in longitudinal section. Alternatively, it could also be a cone-shaped inclined surface.
  • the locking lugs 10 are arranged in the tapered region of the opening edge 16. As a result, the protective grid 6 can be supported not only radially but also axially on the opening edge 16.
  • each locking element 12 has a radially outwardly projecting, fork-like end portion 18 which engages around the associated locking projection 10 of the cover 2 in the circumferential direction on both sides.
  • each latching element 12 has a surface contour of the opening edge 16 of the passage opening 4 adapted support contour 20 such that the end portion 18 can be supported on its support contour 20 radially and axially on the opening edge 16.
  • a radial support section 22 is arranged in each case between two adjacent latching elements 12 for the play-free support of the protective grid 6, wherein each support section 22 has an end-side contact contour 24 for radial and axial abutment on the opening edge 16 of the passage opening 4.
  • the support portions 22 are arranged relative to the locking elements 12 such that in the latched state of the protective grid 6, the support portions 22 axially and radially rest with no play on the opening edge 16 with an elastic contact force. This contact force is generated by slight regional deformation (axial deflection) of the protective grid 6.
  • the protective grid 6 in adaptation to the circular passage opening 4 of a central, in particular circular disk-shaped central portion 26 and a plurality of concentric, each spaced over radial safety distances circular or annular protective struts 28.
  • the protective grid 6 has, in the region of each latching element 12, a radially inwardly extending latching strut 30 which ends at one of the protective struts 28 spaced radially from the middle section 26.
  • each locking strut 30 does not extend to the central portion 26, so that with a certain radial force, a radial deformation of the connected to or via the locking strut 30 protective strut (s) is possible.
  • the height of the required radial force - except for the material and / or shape-dependent spring elasticity of the individual protection struts 28 of the protective grid 6 - also depends on the number of with the respective locking strut 30 connected protection struts 28 from.
  • each locking element 12 is connected via the locking strut 30 with five protection struts 28, so that the radial spring force is generated in common by the deformation of the five struts 28.
  • the amount of radial spring force on the number of involved in the elastic deformation protection struts 28 can be specified.
  • each locking element 12 and the associated locking projection 10 cooperate when joining the connection on non-designated inclined surfaces, that during locking by an axial joining movement automatically elastic radial movement of each locking element 12 is effected under regionally elastic deformation of the protective grid 6. In the latched state, a positive locking is then achieved in the axial direction, because a so-called undercut angle between locking surfaces of locking lug 10 and locking element 12 is greater than / equal to 90 °.
  • each support portion 22 is formed by a free, radially projecting end of a radially inwardly extending continuously to the central portion 26 supporting strut 32 of the protective grid 6.
  • a high radial stability of the protective grid 6 is achieved, in particular in the case of an even number of support sections 22 and support struts 32 with radially symmetric distribution, because then two support struts 32 are diametrically opposite each other on a common diameter line, so that in the direction of this diameter line almost no elastic deformation in the radial direction is possible.
  • the protective grid 6 may be formed as a one-piece molded part made of plastic.
  • the protective grid 6 may also consist at least partially of metal, in particular of a metal wire.
  • the cover 2 is preferably formed as a plastic molded part, wherein the locking lugs 10 are integrally formed.
  • the cover 2 as in Fig. 1 to 3 recognizable - overall annular with a likewise circular outer contour (eg as a so-called "wall ring") or as a housing / wall part with any, eg rectangular or square outer contour with optionally rounded or bevelled corners (eg as "Frontpiatte”) may be formed.
  • the protective grid 6 has at least three, in particular as shown, four locking elements 12 in a radially symmetrical circumferential distribution. This also applies accordingly to the number and arrangement of the locking struts 30, the support sections 22 and the support struts 32nd
  • the number of circular or annular protection struts 28 is dependent on the size of the passage opening 4 to be covered and the maximum safety distances between the adjacent protection struts 28.
  • seven protection struts 28 are provided concentrically around the central central part 26 around, each locking element 12 is connected via the associated locking strut 30 with the five outer protection struts 28. Deviating from this preferred embodiment but also any other embodiments are possible.
  • the invention is not limited to the embodiment described, but also includes all the same in the context of the invention embodiments. It is expressly emphasized that the exemplary embodiments are not limited to all the features in combination, but rather each individual partial feature may also have an inventive meaning independently of all other partial features. Furthermore, the invention has hitherto not been limited to the feature combination defined in claim 1, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every single feature of claim 1 omitted or by at least one to another Site of the application disclosed individual feature can be replaced. In this respect, the claim 1 is to be understood only as a first formulation attempt for an invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP20110170176 2010-07-24 2011-06-16 Agencement de grille de protection pour ventilateurs Active EP2410187B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201020010623 DE202010010623U1 (de) 2010-07-24 2010-07-24 Schutzgitter-Anordnung für Lüfter

Publications (2)

Publication Number Publication Date
EP2410187A1 true EP2410187A1 (fr) 2012-01-25
EP2410187B1 EP2410187B1 (fr) 2013-03-06

Family

ID=44587650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110170176 Active EP2410187B1 (fr) 2010-07-24 2011-06-16 Agencement de grille de protection pour ventilateurs

Country Status (7)

Country Link
US (1) US9080580B2 (fr)
EP (1) EP2410187B1 (fr)
CN (1) CN102345624B (fr)
DE (1) DE202010010623U1 (fr)
DK (1) DK2410187T3 (fr)
ES (1) ES2401895T3 (fr)
PT (1) PT2410187E (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102996527A (zh) * 2012-11-28 2013-03-27 李起武 一种风扇
MX346109B (es) * 2012-11-30 2017-03-07 Plasticos Y Alambres S A De C V * Guarda para aparatos de aire acondicionado.
CN103727070B (zh) * 2013-12-19 2016-04-13 浙江双双制冷设备有限公司 一种离心风机用低阻力导流罩
CN103727069B (zh) * 2013-12-19 2016-04-13 浙江双双制冷设备有限公司 一种离心风机用导流罩
DE102014102370A1 (de) * 2014-02-24 2015-08-27 Ebm-Papst St. Georgen Gmbh & Co. Kg Strömungsgleichrichter sowie Lüfteranordnung mit Strömungsgleichrichter
CN104314881B (zh) * 2014-10-10 2016-09-07 江苏富丽华通用设备有限公司 一种风机防护网罩结构
DE102015200439A1 (de) * 2015-01-14 2016-07-14 Siemens Aktiengesellschaft Anordnung, Getriebeverdichter
DE102015201704A1 (de) * 2015-01-30 2016-08-04 Ebm-Papst Mulfingen Gmbh & Co. Kg Aufnahmesystem
USD782645S1 (en) * 2015-05-26 2017-03-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Fan flow grid
USD775721S1 (en) * 2015-09-11 2017-01-03 Ebm-Papst Mulfingen Gmbh & Co. Kg Flow grid
USD776250S1 (en) * 2015-09-11 2017-01-10 Ebm-Papst Mulfingen Gmbh & Co. Kg Flow grid
CN107380643A (zh) * 2017-07-24 2017-11-24 宁夏如意科技时尚产业有限公司 一种棉纺周转设备
US10876545B2 (en) * 2018-04-09 2020-12-29 Vornado Air, Llc System and apparatus for providing a directed air flow
CN113374711B (zh) * 2021-07-29 2022-12-23 台州苏捷制阀有限公司 一种轴流风机

Citations (3)

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Publication number Priority date Publication date Assignee Title
US5944488A (en) * 1996-05-08 1999-08-31 Triangle Engineering Of Arkansas, Inc. Snap-in guard fan assembly
US20040033131A1 (en) * 2002-08-13 2004-02-19 Susek David N. Fan grill
DE202008002356U1 (de) 2008-02-19 2009-06-25 Ebm-Papst Mulfingen Gmbh & Co. Kg Kompaktlüfter

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DE3311660A1 (de) * 1983-03-30 1984-10-04 Siemens AG, 1000 Berlin und 8000 München Axialventilator
DE3545680C2 (de) * 1985-12-21 1995-11-23 Mulfingen Elektrobau Ebm Ventilatorgehäuse mit Schutzgitter
US5879232A (en) * 1997-03-25 1999-03-09 Tomkins Industries, Inc. Exhaust fan
US6045330A (en) * 1997-04-25 2000-04-04 Williams; Robert E. Retrofitable fan shroud
US6692240B1 (en) * 1999-11-29 2004-02-17 Thomas Industries Inc. Cylindrical pump housing with a fan guard mounted on each end of the housing with snap tabs engaging housing recesses
US6296449B1 (en) * 2000-04-20 2001-10-02 Pierce Wang Multiple current safety fan
TW486043U (en) * 2000-11-16 2002-05-01 Delta Electronics Inc Fast removable fan shield and mounting plate
ITMI20020097U1 (it) * 2002-02-26 2003-08-26 Faber Spa Ventilatore con motore a rotore interno con dispositivo di fissaggio rapido di una girante
US7530783B1 (en) * 2005-10-28 2009-05-12 Vornado Air Circulation Systems, Inc. Grill mounting and retaining assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5944488A (en) * 1996-05-08 1999-08-31 Triangle Engineering Of Arkansas, Inc. Snap-in guard fan assembly
US20040033131A1 (en) * 2002-08-13 2004-02-19 Susek David N. Fan grill
DE202008002356U1 (de) 2008-02-19 2009-06-25 Ebm-Papst Mulfingen Gmbh & Co. Kg Kompaktlüfter

Also Published As

Publication number Publication date
US9080580B2 (en) 2015-07-14
DK2410187T3 (da) 2013-06-03
PT2410187E (pt) 2013-03-18
CN102345624B (zh) 2015-05-20
US20120020772A1 (en) 2012-01-26
CN102345624A (zh) 2012-02-08
EP2410187B1 (fr) 2013-03-06
ES2401895T3 (es) 2013-04-25
DE202010010623U1 (de) 2011-11-02

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