EP3918205A1 - Grille de protection réalisée comme protection anti-manipulation et ventilateur - Google Patents

Grille de protection réalisée comme protection anti-manipulation et ventilateur

Info

Publication number
EP3918205A1
EP3918205A1 EP20737407.5A EP20737407A EP3918205A1 EP 3918205 A1 EP3918205 A1 EP 3918205A1 EP 20737407 A EP20737407 A EP 20737407A EP 3918205 A1 EP3918205 A1 EP 3918205A1
Authority
EP
European Patent Office
Prior art keywords
fan
protective grille
perforated plate
ring
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.)
Pending
Application number
EP20737407.5A
Other languages
German (de)
English (en)
Inventor
Harald ALLERSTORFER
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 EP3918205A1 publication Critical patent/EP3918205A1/fr
Pending legal-status Critical Current

Links

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
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow 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
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb

Definitions

  • the invention relates to a protective grille designed as protection against interference and a fan with a corresponding protective grille.
  • the invention is therefore based on the object of providing a protective grille which is easy to manufacture and which ensures a compact design with the fan and less noise during operation of the fan.
  • a protective grille designed as protection against interference is proposed for attachment to a fan, with a flatly extending perforated plate in which a central ring element is arranged and forms a push-through opening for part of the fan.
  • the perforated plate comprises, distributed over its entire surface, a multiplicity of holes arranged in a honeycomb structure directly adjacent to one another.
  • the holes in the honeycomb structure are matched to a plurality of influencing factors with regard to their respective flow cross-section, for example flow cross-section per hole or their sum, safety distances to moving parts, penetration size, etc.
  • a high number results in a comparatively large number
  • Total cross-sectional area of flow through holes in honeycomb structure is the equilateral hexagon.
  • the perforated plate is preferably a flat, even plate, the material of which is formed exclusively by the webs separating the holes.
  • the ring element comprises fastening means for the securing arrangement of the protective grille on the fan.
  • the fastening means can be provided as screws or rivets, for example.
  • the protective grille can also be positioned on pins provided on the fan.
  • a further development of the protective grille provides that it has a coaxial ring which extends along a radial outer edge of the perforated plate and is designed to attach the protective grille to part of the fan.
  • the coaxial ring and the perforated plate form the radial termination of the protective grille and is used in particular to fasten the protective grille to a housing ring of the fan that surrounds the fan wheel.
  • the coaxial ring is formed in one piece through the perforated plate.
  • a further development of the protective grille is characterized in that a plurality of stiffening beads extend outward in the radial direction in a star shape from the ring element.
  • the stiffening beads preferably have a U-shaped or rectangular cross-section and run uninterruptedly from the ring element to the coaxial ring. Furthermore, the stiffening beads are formed in one piece by the perforated plate.
  • Aerodynamically favorable is a design of the protective grille in which the holes arranged in the honeycomb structure define a total passage area which makes up at least 70%, in particular at least 80% of a total area of the perforated plate.
  • the invention further comprises a fan with a protective grille as described above. It is advantageous for the compact structure if at least part of a motor of the fan is arranged to pass through the push-through opening.
  • the protective motor cap for example, can serve as such a part of the motor.
  • the fan comprises an impeller and, in one embodiment, a housing ring which radially surrounds the impeller.
  • the protective grille is then preferably arranged resting on an axial end face of the housing ring.
  • the ring element can also be provided on at least partially on both axial sides.
  • FIG. 2 shows a side view of the protective grille from FIG. 1,
  • Fig. 3 is a perspective view of a fan with a
  • FIGS 1 and 2 an embodiment of a protective grille 1 for attachment to a fan and designed as protection against interference is shown.
  • the protective grille 1 has a flat, evenly extending perforated plate
  • the protective grille 1 encompasses the ring element axially centrally
  • the ring element 3 which runs on both axial sides of the perforated plate 2 in the embodiment shown.
  • the ring element 3 can, however, also be arranged on only one axial side.
  • six continuous stiffening beads 9 formed by the perforated plate 2 extend in a star shape, each of which has a U-shaped cross section, see also FIG. 3.
  • the perforated plate 2 is correspondingly designed with U-shaped elevations. The number of stiffening beads 9 can be adjusted as required, but should be at least three.
  • the ring element 3 has a plurality of openings 7 as fastening means for the fastening arrangement of the protective grille 1 on a fan. At- For example, 7 fastening pins can be inserted through the openings. The ring element 3 also determines the through opening 8 for part of the fan.
  • a coaxial ring 5, in which no holes 4 are provided, is formed in one piece by the perforated plate 2 coaxially with the ring element 3 on the radial outer edge of the protective grille 1.
  • the coaxial ring 5 is provided on an axial side of the perforated plate 2 as an additional component.
  • the fan 100 comprises a motor 101 and a blower wheel which is radially enclosed by the housing ring 102.
  • the protective grille 1 rests on the axial end face of the housing ring 102.
  • the motor 101 extends axially in sections through the plug-in opening 8 and protrudes axially with respect to an axial plane defined by the protective grille 1. Electrical connections of the motor can therefore be routed axially outside the protective grille.

Landscapes

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

Abstract

L'invention concerne une grille de protection (1) réalisée comme protection anti-manipulation et permettant la fixation sur un ventilateur, comportant une plaque de trous s'étendant de façon plane (2), un élément annulaire central (3) y étant agencé et y formant une ouverture de passage destinée à une pièce du ventilateur, la plaque de trous (2) comprenant, répartie sur sa surface totale, une pluralité de trous (4) agencés directement côte à côte, dans une structure en nid d'abeilles.
EP20737407.5A 2019-07-19 2020-07-02 Grille de protection réalisée comme protection anti-manipulation et ventilateur Pending EP3918205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019119625.6A DE102019119625A1 (de) 2019-07-19 2019-07-19 Schutzgitter ausgeführt als Eingriffsschutz und Ventilator
PCT/EP2020/068685 WO2021013496A1 (fr) 2019-07-19 2020-07-02 Grille de protection réalisée comme protection anti-manipulation et ventilateur

Publications (1)

Publication Number Publication Date
EP3918205A1 true EP3918205A1 (fr) 2021-12-08

Family

ID=71527778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20737407.5A Pending EP3918205A1 (fr) 2019-07-19 2020-07-02 Grille de protection réalisée comme protection anti-manipulation et ventilateur

Country Status (4)

Country Link
EP (1) EP3918205A1 (fr)
CN (1) CN211082411U (fr)
DE (1) DE102019119625A1 (fr)
WO (1) WO2021013496A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217421645U (zh) 2022-03-03 2022-09-13 阳光电源股份有限公司 整流罩和风扇装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2325913A (en) * 1942-07-07 1943-08-03 Jr Price P Mclcmore Tractor fan guard
JPS62202962A (ja) * 1986-02-28 1987-09-07 Toyotomi Kogyo Co Ltd 扇風兼温風機
US7008180B2 (en) * 2002-06-28 2006-03-07 Seiko Epson Corporation Axial-flow fan and projector provided with the same
JP2019011870A (ja) * 2015-11-18 2019-01-24 日本電産テクノモータ株式会社 ファンユニットおよび室外機
US10267340B2 (en) * 2016-02-24 2019-04-23 International Business Machines Corporation Concentrically symmetric connector in blind mate round fan assembly
US20180003195A1 (en) * 2016-06-29 2018-01-04 Superior Lite Corporation Limited Integrally Formed Fan Guard
CN106837891A (zh) * 2017-03-29 2017-06-13 邯郸学院 一种吊扇防护罩

Also Published As

Publication number Publication date
WO2021013496A1 (fr) 2021-01-28
CN211082411U (zh) 2020-07-24
DE102019119625A1 (de) 2021-01-21

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