EP3009591B1 - Grille de ventilation - Google Patents

Grille de ventilation Download PDF

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Publication number
EP3009591B1
EP3009591B1 EP14188643.2A EP14188643A EP3009591B1 EP 3009591 B1 EP3009591 B1 EP 3009591B1 EP 14188643 A EP14188643 A EP 14188643A EP 3009591 B1 EP3009591 B1 EP 3009591B1
Authority
EP
European Patent Office
Prior art keywords
grid
ventilation
mesh
ribs
ventilation grid
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.)
Active
Application number
EP14188643.2A
Other languages
German (de)
English (en)
Other versions
EP3009591A1 (fr
Inventor
Carlos Nieto
Ivan C Pedersen
Ants Palgi
Roman Ionikan
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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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 ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP14188643.2A priority Critical patent/EP3009591B1/fr
Priority to DK14188643.2T priority patent/DK3009591T3/da
Priority to PCT/EP2015/073123 priority patent/WO2016058883A1/fr
Priority to CN201580063434.9A priority patent/CN107002455B/zh
Priority to AU2015332900A priority patent/AU2015332900B2/en
Priority to BR112017007445A priority patent/BR112017007445A2/pt
Publication of EP3009591A1 publication Critical patent/EP3009591A1/fr
Application granted granted Critical
Publication of EP3009591B1 publication Critical patent/EP3009591B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
    • E06B7/08—Louvre doors, windows or grilles
    • E06B7/082—Louvre doors, windows or grilles with rigid or slidable lamellae

Definitions

  • the present invention relates to vertical ventilation arrangements.
  • Enclosed devices like a distribution transformer in an electric distribution substation or an inverter in a solar power substation dissipate a lot of heat.
  • Enclosures typically have at least one opening allowing air to flow, equipped with a grid for preventing small animals passing in and for protecting against normal rain, providing no more than IP23 class protection.
  • a better protection against horizontal rain can be achieved by a tight labyrinth structure, but increased air flow resistance decreases ventilation capability.
  • a higher degree of protection against access to hazardous parts and against solid foreign objects indicated by the first characteristic numeral of the IP code may be needed in order to ensure that no faults will occur in the equipment installed inside the enclosure and/or compartment.
  • a higher degree of protection against ingress of water indicated by the second characteristic numeral of the IP code may be needed to protect the equipment inside the enclosure and/or compartment.
  • IP3X access of objects less than 2.5mm
  • IP4X access of objects less than 1 mm
  • IPX5 water jet
  • US 2012/015596 A1 discloses a device for keeping rain out of an open window.
  • EP 0 674 090 A1 discloses a ventilation door with a number of spaced transverse vanes.
  • EP 0 222 456 discloses a ventilation device with louvred slat walls.
  • An object of the present invention is to provide an improved ventilation grid.
  • the object is achieved with an invention, which is defined in the independent claim. Some embodiments are disclosed in the dependent claims.
  • FIG. 1 shows a cut view on an embodiment of the invention.
  • An outer grid (1) comprises a first frame (2), preferably made of metallic or glass reinforced polyester rectangular tube, shaped as rectangular or square, comprising lower horizontal beam (3) and upper horizontal beam (not shown), fixed together by vertical beams (4).
  • the shape of the first frame may also be different of that, even like round or ellipse.
  • the first frame (2) is for fitting the ventilation grid as a one device on an opening of a wall.
  • the ventilation grid may be fitted on a door of the enclosure, as well.
  • the frame of the door may also serve as a first frame for the ventilation grid, or at least some beams of the frames may be common for a door and the first frame.
  • the outer grid comprises plurality of substantially horizontal outer ribs (5) arranged between the vertical beams (4) of the first frame.
  • the outer ribs (5) are made of steel, they may preferably be fixed to vertical beams (4) by welding.
  • the set of outer ribs (5) may have vertical ribs for fixing the ribs together.
  • the set of outer ribs may also be injection-molded as a whole with supporting vertical beams and/or its own plastic frame for fixing the ribs to the first frame (2).
  • the outer ribs (5) may even be injection-molded with a frame to serve as the first frame (2).
  • the outer ribs (5) preferably have unequal legs, cross-section being shaped as a letter "L” upside down with two substantially straight legs (6,7) substantially perpendicular to each other, extending from the connecting point (8).
  • the angle between the legs (6,7) is preferably about 90 degrees, but may vary from that angle within the scope of the invention. If significantly a smaller angle, the flow resistance may increase because the space between two adjacent ribs is getting smaller. If the angle is significantly bigger than 90 degrees, the capability to prevent water penetrating may be not so good.
  • the inner and outer radius of the corner of "L” may vary from very small diameter like sharp "L” to a more rounded one.
  • the first leg (6) of the outer rib (5) is preferably longer than the second leg (7).
  • the outer ribs (5) are aligned on a way that a connecting point (8) connecting the legs (6,7) to each other is on most of the top and both side legs are downwards for draining rain water down.
  • the connecting point constitutes a longitudinal corner of the L-shaped rib.
  • the outermost first leg (6) is preferably longer than the innermost second leg (7).
  • the outermost first leg (6) is for receiving a rain and preventing the water or sand or snow penetration significantly through the outer grid (1).
  • the innermost second leg (7) is directing water etc. downwards but also preventing any thick rigid object to be pushed through the outer grid (1).
  • the outer ribs (5) of the outer grid (1) are preferably arranged close each other so that not even any thin straight object could be pushed through the outer grid.
  • a diameter for a rigid straight object to be able to enter is maximum 12,5 mm for IP2X, 2,5 mm for IP3X and 1 mm for IP 4X. Still the spacing of the outer ribs (5) may be bigger than aforesaid measures because of the L-shape of the outer ribs.
  • the distance between the straight line drawn through the outer edge of the first leg (6) and the outer edge of the second leg (7) of one rib, and the outer surface of the connecting point (8) of the adjacent rib below defines the maximum straight object diameter to be able to be pushed in.
  • the outer grid (1) with inclined legs of the outer ribs (5) may as such provide IPX3 class protection against a rain falling as a spray at any angle up to 60° from the vertical.
  • the ventilation grid according to the invention further comprises an inner grid (9), adjacent to the outer grid (1).
  • the inner grid (9) comprises substantially horizontal inner ribs (10).
  • the inner ribs (10) of the inner grid (9) are preferably shaped flat, like a letter "I" of their cross-section, just being straight sheet of metal or plastic, like glass reinforced polyester.
  • the inner ribs are preferably inclined downward i.e. the outermost edge (11) of the inner rib is nethermost for preventing the water drops draining in the enclosure.
  • Tilt angle of the inner ribs (10) of inner grid (9) is preferably 45 degrees providing air flowing easily, but the angle can be steeper or less steep of that.
  • the nethermost inner rib (12) on the bottom may preferably extend at least to the outer surface level of the outer grid (1) to be able to drain the water finally out from the interior of the ventilation grid.
  • the nethermost inner rib (12) and the adjacent inner rib (13) to that are connected by a vertical portion (14) between the innermost edges of the inner ribs (12,13) to avoid dropping water drops entering inside the enclosure.
  • the nethermost inner rib (12), the adjacent inner rib (13) and the vertical portion (14) are bent of one sheet metal or injection-molded of plastic to be as a one rib.
  • FIG. 2 shows another embodiment of the ventilation grid with a mesh (15) arranged on a vertical direction in between the outer grid (1) and the inner grid (9).
  • the mesh (15) extends on vertical and horizontal directions on the space of openings of the frames of the grids.
  • the mesh (15) may have its own frame to keep the mesh on a planar shape.
  • Class IP3X means maximum apertures of 2,5 mm
  • class IP4X means maximum apertures of 1 mm. Different measures, smaller or larger of the mesh may be used depending of the need.
  • the mesh (15) prevents bees or other type of insects to pass the ventilation grid. Another benefit is that the mesh may brake the water into smaller drops, thus hindering them to pass through the ventilation grid.
  • the mesh may be fabricated by punching openings on a sheet of metal or plastic, preferably of stainless steel for hard environmental requirements, like close to the sea with corrosive salt water.
  • a wire mesh of thin wires may have the lowest flow resistance.
  • FIG 3 shows an embodiment of the inner grid (9).
  • the inner grid (9) comprises a second frame (16) comprising beam elements corresponding to the shape of the beams of the first frame (2) of the outer grid (1).
  • the inner grid (9) beams of the second frame (16) may be more light structure because the inner grid (9) is protected against vandalism by the outer grid (1).
  • the inner grid (9) comprises substantially horizontal inner ribs (10) located between the vertical beams (17), which inner ribs (10) are fixed to the vertical beams (17) of the second frame e.g. by welding or gluing.
  • the inner ribs (10) may pass through openings (18) on the vertical beams (17) making easier to fix the inner ribs on a right position, having an equal space from rib to the adjacent rib with an equal and desired angle.
  • the inner ribs (10) may be fixed by welding or be glued to the vertical beams (17).
  • the inner ribs (10) may pass through the openings (18) and be bent by the outer edge of the openings (18) of the vertical beams, preventing the ribs move on a horizontal direction.
  • the vertical beams (17) have a cross-shape of U-beam or rectangular, where the openings are on the inner legs thus the outer legs are preventing or at least limiting the horizontal movement of the inner ribs (10).
  • the inner grid (9) may be fixed detachable to outer grid (1) from its second frame (16) by screws, or the inner grid (9) may be hinged allowing turning around the axis of rotation axle of the hinges (19).
  • the hinged inner grid (9) may be lockable by at least one screw or any type of quick locking members, like a latch, allowing easy opening.
  • the mesh (15) could be installed between inner and outer grids and be taken out for cleaning or may be replaced to another one.
  • Figure 3 shows fixing members (20), preferably metal sheet strips of the outer grid (1), attached to the inner side of the first frame (2) of the outer grid (1), allowing to fix the ventilation grid from the inner side of the wall or a door, preventing to remove the ventilation grid from outside of the enclosure by vandals or by children.
  • the vertical inner beams (17) of the inner grid (9) may extend lower than the nethermost inner rib. Apertures (21) may be punched close to the end of the vertical beam (17) for receiving a bolt (22) of a hinge (19) for allowing turning the inner grid (9) from a closed position to an open position.
  • a bracket (23) of the hinge (19) may be fixed directly to the inner side of the wall or a door, or to the first frame (2) of the outer grid (1), or the fixing member (20) of the outer grid (1).
  • a hinge (19) may have two brackets (23) and two bolts (22) or one long bolt (22) extending through the both vertical beams (17) of the inner grid (9).
  • Figure 4 shows a ventilation grid arranged on a door of a cabinet.
  • the inner grid (9) is on an open position, the mesh (15) being partly taken out.
  • the nethermost inner rib (12) of the inner grid (9) extends on the horizontal level to the outer side of the lower horizontal beam (3) of the outer grid (1), for draining the water drops out.
  • the nethermost inner rib (12) is on a withdrawn position and not extending to the outer surface level of the outer grid (1).
  • Figure 5 shows the ventilation grid from the inner side of a cabinet door.
  • the inner grid (9) is on an open position and the mesh (15) is partly taken out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Catching Or Destruction (AREA)
  • Air-Flow Control Members (AREA)
  • Ventilation (AREA)

Claims (13)

  1. Grille de ventilation pour ventiler une enceinte, comprenant une grille extérieure (1), présentant une pluralité de nervures extérieures horizontales (5) pour empêcher de l'eau ou des corps étrangers solides d'entrer à l'intérieur de l'enceinte, une grille intérieure (9) adjacente à la grille extérieure à l'intérieur de l'enceinte présentant une pluralité de nervures intérieures horizontales (10) afin de diriger l'eau qui entre à l'intérieur de la grille extérieure (1), au moins une des nervures extérieures horizontales (5) de la grille extérieure présentant une section transversale comprenant deux branches (6, 7) connectées l'une à l'autre en un point de connexion (8) et agencées selon un certain angle l'une par rapport à l'autre, chacune des branches (6,7) s'étendant vers le bas à partir du point de connexion des deux côtés, caractérisée en ce que la grille de ventilation comprend une charnière (19) pour connecter la grille intérieure (9) et la grille extérieure (1) articulées l'une à l'autre.
  2. Grille de ventilation selon la revendication 1, caractérisée en ce que la grille intérieure (9) est attachée de façon détachable à la grille extérieure (1).
  3. Grille de ventilation selon l'une quelconque des revendications précédentes, caractérisée en ce que la grille de ventilation comprend un maillage (15) agencé entre la grille intérieure (9) et la grille extérieure (1).
  4. Grille de ventilation selon la revendication 3, caractérisée en ce que le maillage (15) comprend des ouvertures qui sont dimensionnées sur la base d'une classe de protection IP désirée.
  5. Grille de ventilation selon la revendication 3, caractérisée en ce que les ouvertures du maillage (15) présentent une dimension égale ou inférieure à 2,5 mm afin d'assurer une protection de classe IP3X.
  6. Grille de ventilation selon la revendication 4, caractérisée en ce que les ouvertures du maillage (15) présentent une dimension égale ou inférieure à 1 mm afin d'assurer une protection de classe IP4X.
  7. Grille de ventilation selon la revendication 3 caractérisée en ce que le maillage (15) est un maillage en fil métallique.
  8. Grille de ventilation selon la revendication 3, caractérisée en ce que le maillage (15) est un maillage en fil plastique.
  9. Grille de ventilation selon l'une quelconque des revendications précédentes, caractérisée en ce que la grille de ventilation comprend un élément d'étanchéité élastique agencé entre le cadre de la grille intérieure et le cadre de la grille extérieure.
  10. Grille de ventilation selon l'une quelconque des revendications précédentes, caractérisée en ce que les branches (6, 7) des nervures extérieures (5) de la grille extérieure (1) présentent une longueur différente, la plus longue des branches étant agencée plus près du côté extérieur de l'enceinte.
  11. Grille de ventilation selon l'une quelconque des revendications précédentes, caractérisée en ce que la nervure intérieure la plus basse (12) de la grille intérieure (9) s'étend sur le côté extérieur de la poutre horizontale inférieure (3) de la première grille (1) afin de drainer l'eau et la nervure intérieure adjacente (13) pour la nervure la plus basse (12) et la nervure la plus basse (12) sont connectées l'une à l'autre par une partie verticale (14).
  12. Grille de ventilation selon la revendication 11, caractérisée en ce que d'autres nervures intérieures (10) de la grille intérieure (9) présentent une section transversale substantielle ayant la forme de la lettre "I".
  13. Sous-station de distribution électrique, caractérisée en ce qu'elle comprend une grille de ventilation selon l'une quelconque des revendications précédentes.
EP14188643.2A 2014-10-13 2014-10-13 Grille de ventilation Active EP3009591B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP14188643.2A EP3009591B1 (fr) 2014-10-13 2014-10-13 Grille de ventilation
DK14188643.2T DK3009591T3 (da) 2014-10-13 2014-10-13 Ventilationsrist
PCT/EP2015/073123 WO2016058883A1 (fr) 2014-10-13 2015-10-07 Grille de ventilation
CN201580063434.9A CN107002455B (zh) 2014-10-13 2015-10-07 通风格栅
AU2015332900A AU2015332900B2 (en) 2014-10-13 2015-10-07 Ventilation grid
BR112017007445A BR112017007445A2 (pt) 2014-10-13 2015-10-07 grade de ventilação para ventilação de um recinto e subestação de distribuição elétrica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14188643.2A EP3009591B1 (fr) 2014-10-13 2014-10-13 Grille de ventilation

Publications (2)

Publication Number Publication Date
EP3009591A1 EP3009591A1 (fr) 2016-04-20
EP3009591B1 true EP3009591B1 (fr) 2017-08-16

Family

ID=51687966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14188643.2A Active EP3009591B1 (fr) 2014-10-13 2014-10-13 Grille de ventilation

Country Status (6)

Country Link
EP (1) EP3009591B1 (fr)
CN (1) CN107002455B (fr)
AU (1) AU2015332900B2 (fr)
BR (1) BR112017007445A2 (fr)
DK (1) DK3009591T3 (fr)
WO (1) WO2016058883A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112189300A (zh) * 2018-06-25 2021-01-05 Abb瑞士股份有限公司 用于开关柜组件的保护设备、开关柜组件以及开关柜
CN112536575B (zh) * 2020-12-03 2022-07-12 江西朝阳机械有限公司 一种逃生防火门用通风栅格的制造工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3034781C1 (de) * 1980-09-15 1982-02-25 Deutscher Wetterdienst Instrumentenamt München, 8042 Oberschleißheim Klimahuette fuer meterorologische Messinstrumente
DE3313008A1 (de) * 1983-04-12 1984-10-18 Betonbau GmbH, 6833 Waghäusel Luefterelement
NL8503098A (nl) * 1985-11-11 1987-06-01 Dec Holding Bv Kap met lamellenwanden.
DE9404787U1 (de) * 1994-03-24 1995-07-27 Betonbau GmbH, 68753 Waghäusel Lüftertüre
US10386090B2 (en) * 2010-07-14 2019-08-20 Zhihua Fang Reconfigurable system allowing air flow through an open window while blocking precipitation
CN201875784U (zh) * 2010-11-16 2011-06-22 隽景阳 一种集成环保灶

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DK3009591T3 (da) 2017-11-27
AU2015332900A1 (en) 2017-05-04
CN107002455B (zh) 2019-09-27
AU2015332900B2 (en) 2018-05-24
EP3009591A1 (fr) 2016-04-20
CN107002455A (zh) 2017-08-01
WO2016058883A1 (fr) 2016-04-21
BR112017007445A2 (pt) 2017-12-19

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