EP3918205A1 - Protective grating designed as a finger guard, and fan - Google Patents

Protective grating designed as a finger guard, and fan

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)
French (fr)
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/en
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

The invention relates to a protective grating (1) designed as a finger guard for fastening to a fan, with a perforated plate (2) which extends areally and in which a central ring element (3) is situated and forms a plug-through opening for part of the fan, wherein the perforated plate (2) comprises, distributed over its entire surface, a multiplicity of holes (4) that are directly adjacent to one another and are arranged in a honeycomb structure.

Description

Schutzgitter ausgeführt als Eingriffsschutz und Ventilator Protective grille designed as protection against intrusion and a fan
Beschreibung: Description:
Die Erfindung betrifft ein Schutzgitter ausgeführt als Eingriffsschutz und einen Ventilator mit einem entsprechenden Schutzgitter. The invention relates to a protective grille designed as protection against interference and a fan with a corresponding protective grille.
Im Stand der Technik sind Ringschutzgitter für Ventilatoren gebildet aus einer Vielzahl von koaxialen Ringen bekannt, deren Abstand ausreichend ge- ring gewählt ist, dass Anwender mit ihren Händen nicht in den Bereich greifen können, in dem das Gebläserad des Ventilators rotiert. In the prior art, protective ring grilles for fans formed from a large number of coaxial rings are known, the spacing of which is selected to be sufficiently small that users cannot reach with their hands in the area in which the fan wheel rotates.
Jedes Schutzgitter im Strömungsweg eines Ventilators verursacht jedoch eine Geräuschentwicklung und Wirkungsgradreduktion. Zudem sind Ringschutzgitter üblicherweise geschweißt, so dass ihre Herstellung aufwändig ist. However, every protective grille in the flow path of a fan causes noise and a reduction in efficiency. In addition, ring guard grilles are usually welded, so that their production is complex is.
Der Erfindung liegt deshalb die Aufgabe zugrunde, ein einfach herstellbares Schutzgitter bereit zu stellen, das einen kompakten Aufbau mit dem Ventilator eine geringere Geräuschentwicklung während des Betriebs des Ventilators gewährleistet. 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.
Diese Aufgabe wird durch die Merkmalskombination gemäß Patentanspruch 1 gelöst. This object is achieved by the combination of features according to patent claim 1.
Erfindungsgemäß wird ein Schutzgitter ausgeführt als Eingriffsschutz zur Befestigung an einem Ventilator vorgeschlagen, mit einer sich flächig erstreckenden Lochplatte, in der ein zentrales Ringelement angeordnet ist und eine Durchstecköffnung für einen Teil des Ventilators bildet. Die Lochplatte umfasst dabei über ihre gesamte Fläche verteilt eine Vielzahl von unmittelbar aneinander angrenzende, in einer Wabenstruktur angeordnete Löcher. According to the invention, 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.
Die Löcher in Wabenstruktur sind bezüglich ihres jeweiligen Durchströmungsquerschnitts abgestimmt auf eine Mehrzahl von Einflussfaktoren, beispielsweise Durchströmungsquerschnitt pro Loch oder deren Summe, Sicherheitsabstände zu bewegten Teilen, Durchgriffsgröße usw. Durch eine hohe Anzahl ergibt sich eine vergleichsweise große 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
Gesamtdurchströmungsquerschnittsfläche der Löcher in Wabenstruktur. Eine bevorzugte Form der Löcher ist das gleichseitige Sechseck. Total cross-sectional area of flow through holes in honeycomb structure. A preferred shape of the holes is the equilateral hexagon.
Die Lochplatte ist vorzugsweise eine flache, ebene Platte, deren Material ausschließlich durch die die Löcher trennenden Stege gebildet ist. The perforated plate is preferably a flat, even plate, the material of which is formed exclusively by the webs separating the holes.
Bei dem Schutzgitter ist ferner in vorteilhafterweise vorgesehen, dass das Ringelement Befestigungsmittel zur befestigenden Anordnung des Schutzgitters an dem Ventilator umfasst. Die Befestigungsmittel können beispielswei se als Schrauben oder Nieten bereitgestellt werden. Auch kann das Schutz gitter auf an dem Ventilator vorgesehene Stifte positioniert werden. Neben dem Ringelement sieht eine Weiterbildung des Schutzgitters vor, dass es einen sich entlang einer radialen Außenkante der Lochplatte erstreckenden Koaxialring aufweist, der ausgebildet ist, das Schutzgitter an einem Teil des Ventilators zu befestigen. Der Koaxialring bildet mit der Lochplatte den radialen Abschluss des Schutzgitters und wird insbesondere genutzt, das Schutzgitter an einem das Ventilatorrad umschließenden Gehäusering des Ventilators zu befestigen. Der Koaxialring ist in einer Ausführungsvarian te einstückig durch die Lochplatte ausgebildet. In the case of the protective grille, it is also advantageously provided that 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. In addition to the ring element, 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. In one variant, the coaxial ring is formed in one piece through the perforated plate.
Eine weitere Weiterbildung des Schutzgitters ist dadurch gekennzeichnet, dass sich von dem Ringelement in radialer Richtung sternförmig nach außen mehrere Versteifungssicken erstrecken. Die Versteifungssicken weisen vorzugsweise einen U-förmigen oder rechteckigen Querschnitt auf und verlaufen ununterbrochen vom Ringelement zum Koaxialring. Ferner sind die Verstei fungssicken einstückig durch die Lochplatte gebildet. 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.
Aerodynamisch günstig ist eine Ausbildung des Schutzgitters, bei dem die in der Wabenstruktur angeordneten Löcher eine aufsummierte Durchtrittsfläche bestimmen, welche mindestens 70%, insbesondere mindestens 80% einer Gesamtfläche der Lochplatte ausmacht. 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.
Die Erfindung umfasst ferner einen Ventilator mit einem vorstehend beschriebenen Schutzgitter. Dabei ist für den kompakten Aufbau günstig, wenn zumindest ein Teil eines Motors des Ventilators durch die Durchstecköffnung hindurchtretend angeordnet ist. Als derartiger Teil des Motors kann beispielsweise die Motorschutzkappe dienen. 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.
Der Ventilator umfasst ein Gebläserad und in einer Ausführung einen das Gebläserad radial umschließenden Gehäusering. Dann ist vorzugsweise das Schutzgitter an einer axialen Stirnseite des Gehäusrings aufliegend angeordnet. Das Ringelement kann zudem auf zumindest teilweise auf beiden Axialseiten vorgesehen sein. Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprü chen gekennzeichnet bzw. werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführung der Erfindung anhand der Figuren näher dargestellt. Es zeigen: Fig. 1 eine axiale Draufsicht auf ein Schutzgitter, 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. Other advantageous developments of the invention are characterized in the subclaims or are shown in more detail below together with the description of the preferred embodiment of the invention with reference to the figures. They show: FIG. 1 an axial plan view of a protective grille,
Fig. 2 eine Seitenansicht des Schutzgitters aus Fig. 1 , FIG. 2 shows a side view of the protective grille from FIG. 1,
Fig. 3 eine perspektivische Ansicht auf einen Ventilator mit einem Fig. 3 is a perspective view of a fan with a
Schutzgitter aus Figur 1. Protective grille from Figure 1.
In den Figuren 1 und 2 ist ein Ausführungsbeispiel eines Schutzgitters 1 zur Befestigung an einem Ventilator und ausgeführt als Eingriffsschutz dargestellt. Das Schutzgitter 1 hat eine sich flächig eben erstreckende LochplatteIn Figures 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
2, über deren im Wesentlichen gesamte Fläche verteilt unmittelbar aneinander angrenzende, in einer Wabenstruktur angeordnete Löcher 4 ausgebildet sind. Die Löcher 4 sind im Querschnitt hexagonal und grenzen unmittelbar aneinander an, so dass die gesamte Durchströmungsquerschnittsfläche möglichst groß ist. Axial zentral umfasst das Schutzgitter 1 das Ringelement2, over the substantially entire surface of which directly adjoining holes 4 arranged in a honeycomb structure are formed. The holes 4 are hexagonal in cross-section and directly adjoin one another, so that the entire through-flow cross-sectional area is as large as possible. The protective grille 1 encompasses the ring element axially centrally
3, das in der gezeigten Ausführung auf beiden Axialseiten der Lochplatte 2 verläuft. Das Ringelement 3 kann jedoch auch auf nur einer Axialseite ange- ordnet werden. Ausgehend von dem Ringelement 3 erstrecken sich sternförmig sechs durch die Lochplatte 2 gebildete, durchgängige Versteifungssicken 9, die jeweils einen U-förmigen Querschnitt aufweisen, siehe auch Figur 3. In deren Bereich ist die Lochplatte 2 entsprechend mit U-förmigen Erhebungen ausgebildet. Die Anzahl der Versteifungssicken 9 ist bedarfsgerecht anpassbar, sollte aber mindestens drei betragen. 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. Starting from the ring element 3, 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. In the area thereof, 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.
Das Ringelement 3 weist mehrere Öffnungen 7 als Befestigungsmittel zur befestigenden Anordnung des Schutzgitters 1 an einem Ventilator auf. Bei- spielsweise können durch die Öffnungen 7 Befestigungspins gesteckt werden. Das Ringelement 3 bestimmt zudem die Durchstecköffnung 8 für einen Teil des Ventilators. 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.
Ein Koaxialring 5, indem keine Löcher 4 vorgesehen sind, ist koaxial zum Ringelement 3 am radialen Außenrand des Schutzgitters 1 einstückig durch die Lochplatte 2 gebildet. In einer alternativen Ausführung wird der Koaxialring 5 auf einer Axialseite der Lochplatte 2 als zusätzliches Bauteil vorgesehen. 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. In an alternative embodiment, the coaxial ring 5 is provided on an axial side of the perforated plate 2 as an additional component.
Bezugnehmend auf Figur 3 ist ein Ventilator 100 mit dem Schutzgitter 1 aus den Figuren 1 und 2 gezeigt. Der Ventilator 100 umfasst einen Motor 101 und ein Gebläserad, welches radial umschlossen ist von dem Gehäusering 102. Das Schutzgitter 1 liegt auf der axialen Stirnseite des Gehäusrings 102 auf. Der Motor 101 erstreckt sich abschnittsweise axial durch die Durch stecköffnung 8 hindurch und steht axial gegenüber einer durch das Schutz- gitter 1 bestimmte Axialebene hervor. Elektrische Anschlüsse des Motors können somit axial außerhalb des Schutzgitter geführt werden. Referring to FIG. 3, a fan 100 with the protective grille 1 from FIGS. 1 and 2 is shown. 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.

Claims

Patentansprüche Claims
1. Schutzgitter (1 ) ausgeführt als Eingriffsschutz zur Befestigung an einem Ventilator, mit einer sich flächig erstreckenden Lochplatte (2), in der ein zentrales Ringelement (3) angeordnet ist und eine Durch- stecköffnung für einen Teil des Ventilators bildet, wobei die Lochplatte1. Protective grille (1) designed as protection against intrusion for attachment to a fan, with a flat extending perforated plate (2) in which a central ring element (3) is arranged and forms a through opening for part of the fan, the perforated plate
(2) über ihre gesamte Fläche verteilt eine Vielzahl von unmittelbar aneinander angrenzende, in einer Wabenstruktur angeordnete Löcher (4) umfasst. (2) comprises a plurality of directly adjoining holes (4) arranged in a honeycomb structure distributed over its entire surface.
2. Schutzgitter nach Anspruch 1 , dadurch gekennzeichnet, dass das Ringelement (3) Befestigungsmittel zur befestigenden Anordnung des2. Protective grille according to claim 1, characterized in that the ring element (3) fastening means for the fastening arrangement of the
Schutzgitters (1) an dem Ventilator umfasst. Includes protective grille (1) on the fan.
3. Schutzgitter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Schutzgitter (1) einen sich entlang einer radialen Außenkante der Lochplatte (2) erstreckenden Koaxialring (5) aufweist, der ausgebildet ist, das Schutzgitter (1) an einem Teil des Ventilators zu befestigen. 3. Protective grille according to claim 1 or 2, characterized in that the protective grille (1) has a coaxial ring (5) which extends along a radial outer edge of the perforated plate (2) and is designed to attach the protective grille (1) to part of the fan to fix.
4. Schutzgitter nach einem der vorigen Ansprüche, dadurch gekenn zeichnet, dass sich von dem Ringelement (3) in radialer Richtung sternförmig nach außen mehrere Versteifungssicken (9) erstrecken. 4. Protective grille according to one of the preceding claims, characterized in that several stiffening beads (9) extend from the ring element (3) in the radial direction in a star shape to the outside.
5. Schutzgitter nach dem vorigen Anspruch, dadurch gekennzeichnet, dass die Versteifungssicken (9) einen U-förmigen oder rechteckigen Querschnitt aufweisen. 5. Protective grille according to the preceding claim, characterized in that the stiffening beads (9) have a U-shaped or rectangular cross section.
6. Schutzgitter nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die in der Wabenstruktur angeordneten Löcher (4) eine Durchtrittsfläche bestimmen, welche mindestens 70%, insbesondere mindestens 80% einer Gesamtfläche der Lochplatte (2) ausmacht. 6. Protective grille according to one of the preceding claims, characterized in that the holes (4) arranged in the honeycomb structure determine a passage area which makes up at least 70%, in particular at least 80% of a total area of the perforated plate (2).
7. Schutzgitter nach einem der vorigen Ansprüche, dadurch gekenn- zeichnet, dass die Wabenstruktur durch eine Vielzahl von sechseckigen Löchern (4) gebildet ist. 7. Protective grille according to one of the preceding claims, characterized shows that the honeycomb structure is formed by a plurality of hexagonal holes (4).
8. Ventilator (100) mit einem Schutzgitter (1 ) nach einem der vorigen Ansprüche. 8. fan (100) with a protective grille (1) according to one of the preceding claims.
9. Ventilator nach Anspruch 8, wobei zumindest ein Teil eines Motors des Ventilators durch die Durchstecköffnung (8) hindurchtretend angeordnet ist. 9. Fan according to claim 8, wherein at least part of a motor of the fan is arranged to pass through the through opening (8).
10. Ventilator nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Ventilator (100) ein Gebläserad und einen das Gebläserad radial um- schließenden Gehäusering (102) umfasst, wobei das Schutzgitter (1) an einer axialen Stirnseite des Gehäusrings (102) aufliegt. 10. Fan according to claim 8 or 9, characterized in that the fan (100) comprises an impeller and a housing ring (102) surrounding the impeller radially, the protective grille (1) resting on an axial end face of the housing ring (102) .
EP20737407.5A 2019-07-19 2020-07-02 Protective grating designed as a finger guard, and fan Pending EP3918205A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019119625.6A DE102019119625A1 (en) 2019-07-19 2019-07-19 Protective grille designed as protection against intrusion and a fan
PCT/EP2020/068685 WO2021013496A1 (en) 2019-07-19 2020-07-02 Protective grating designed as a finger guard, and fan

Publications (1)

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

Family

ID=71527778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20737407.5A Pending EP3918205A1 (en) 2019-07-19 2020-07-02 Protective grating designed as a finger guard, and fan

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217421645U (en) * 2022-03-03 2022-09-13 阳光电源股份有限公司 Cowl and fan device

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 (en) * 1986-02-28 1987-09-07 Toyotomi Kogyo Co Ltd Electric fan functioning as warm air heater
US7008180B2 (en) * 2002-06-28 2006-03-07 Seiko Epson Corporation Axial-flow fan and projector provided with the same
JP2019011870A (en) * 2015-11-18 2019-01-24 日本電産テクノモータ株式会社 Fan unit and outdoor equipment
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 (en) * 2017-03-29 2017-06-13 邯郸学院 A kind of shield for ceiling fan

Also Published As

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

Similar Documents

Publication Publication Date Title
EP3255281B1 (en) Ventilator with tandem diffuser blades
DE102011121025A1 (en) Motor suspension for fans, preferably axial fans, and method for producing a ventilation grille of such engine mount
DE202015100230U1 (en) Radial impeller for a fan
CH677760A5 (en)
WO2021013496A1 (en) Protective grating designed as a finger guard, and fan
EP3705796A1 (en) Heat pump unit, air guiding element for heat pump unit, and method for manufacturing an air guiding element
DE202019104003U1 (en) Protective grille designed as protection against interference and fan
EP0547253A1 (en) Flow director for a fan
DE2802378A1 (en) Lamellae valve for compressor
DE102020001137A1 (en) Gearbox with fan arrangement
DE202018106943U1 (en) centrifugal blower
DE2626781C3 (en) Washing machine drum
DE102010023522B4 (en) Protective grating, in particular leaf trap grille, for a motor vehicle
DE102020103772A1 (en) Fan with cover plate on the rotor bell
DE29723505U1 (en) Fastening device for a fan assembly
EP2899406A1 (en) Cooling module with sound insulated blower
DE202017007195U1 (en) fan
DE102020111154A1 (en) Hood and method of making a hood
DE202019100847U1 (en) Control cabinet with an air outlet for the exchange of air between the inside of the control cabinet and the environment of the control cabinet
DE202013104348U1 (en) Modularized cross-flow fan device
DE2407796A1 (en) Ventilator with centrifugal fan inside spiral housing - has air deflection baffles guiding air through two side vents
DE10008019C2 (en) Arrangement for ventilation of electrical and electronic assemblies
EP0917275A1 (en) Casing for an electric motor
DE9013191U1 (en) Flow straightener for a fan
DE102017203525A1 (en) fan

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210903

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230920