EP0381192B1 - Dispositif de ventilation de toiture - Google Patents

Dispositif de ventilation de toiture Download PDF

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Publication number
EP0381192B1
EP0381192B1 EP90101911A EP90101911A EP0381192B1 EP 0381192 B1 EP0381192 B1 EP 0381192B1 EP 90101911 A EP90101911 A EP 90101911A EP 90101911 A EP90101911 A EP 90101911A EP 0381192 B1 EP0381192 B1 EP 0381192B1
Authority
EP
European Patent Office
Prior art keywords
air permeation
region
flaps
cap
cap 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.)
Expired - Lifetime
Application number
EP90101911A
Other languages
German (de)
English (en)
Other versions
EP0381192A1 (fr
Inventor
Fritz Gödl
Hubert Rickert
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.)
Scheffler & Co KG GmbH
Original Assignee
Norm AMC 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
Priority claimed from DE19893903157 external-priority patent/DE3903157C2/de
Priority claimed from DE19893913994 external-priority patent/DE3913994A1/de
Application filed by Norm AMC AG filed Critical Norm AMC AG
Publication of EP0381192A1 publication Critical patent/EP0381192A1/fr
Application granted granted Critical
Publication of EP0381192B1 publication Critical patent/EP0381192B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/17—Ventilation of roof coverings not otherwise provided for
    • E04D13/174—Ventilation of roof coverings not otherwise provided for on the ridge of the roof

Definitions

  • the invention relates to a fan cap to be provided in the ridge or ridge area for rear ventilation of roofs with a fastening area, a central area having air passage openings and an edge area, the air passage openings being designed as chimney-like elongated hole openings running parallel to the longitudinal direction of the cap and the opening planes of the air passage openings preferably at least essentially parallel run to the level of the central area.
  • Fan caps of the type in question have been known for some time; they are arranged in the ridge or ridge area of a roof to avoid possible damage caused by moisture formation.
  • the air inlet or outlet openings for such roofs are generally provided in the eaves and ridge area.
  • a fan cap of the type in question in which the air passage openings are approximately rectangular and the longer side of which runs parallel to the ridge.
  • the air passage openings are surrounded by an upstanding bead. Starting from this edge bead provided near the top of the cap, the air passage openings extend like a chimney far below the cap underside, air holes being provided in the walls delimiting the air passage openings to ensure an air flow.
  • a fan cap is known ( DE - A - 35 11 798 ), in which the edge region is profiled at right angles in the longitudinal direction in a meandering or undulating manner. This creates depressions that form the air flow channels. Chimney-like air passage openings are provided in the central area.
  • the known fan cap, from which the invention is based, is not optimally designed in terms of flow technology, so that the desired vacuum formation, which is necessary for adequate ventilation of a roof space, is not always guaranteed under certain conditions. If this necessary vacuum formation is not achieved, however, the roof space is inadequately vented so that moisture remains in it, which can lead to considerable damage to the roof structure over time.
  • the invention is therefore based on the object of designing and developing the known fan cap in such a way that a very pronounced vacuum formation is achieved largely independently of the respective inflow direction and in particular also with low inflow and thus a particularly effective roof ventilation is achieved.
  • the problem outlined above is now achieved in that at least some of the air passage openings are preceded by a pivotally mounted flap, which can be pivoted in the event of an inflow from the outside into a position which changes the free flow cross section for the incoming air and can be reset in particular by its own weight. Due to this design, flow and pressure conditions always arise with inflows from the most varied directions, which particularly effectively promote the desired air circulation from the inside to the outside.
  • the flaps are pivoted when there is an air flow, this constant pivoting also ensuring mobility in the long term.
  • the flaps can be pivoted about horizontal axes or also about vertical axes. In the case of a pivotable mounting about vertical axes, several, preferably two, partial flaps can also be provided per air passage opening.
  • transverse webs on the outer surface of the cap, in particular to support the ridge tiles, and to arrange the air passage openings and the associated flaps between two such webs.
  • the webs running in the transverse direction promote the lifting of the flaps and always ensure clear flow guidance.
  • the fan cap according to the invention is advantageously of central symmetry, at least when viewed in the longitudinal direction. If the fan cap is flowed against from one side, the flaps on this side are raised, while the flaps on the other, opposite, outflow side remain in their starting position.
  • the fastening area 1 is provided on the edge with a gradation 13 of, for example, approximately 1 mm, the width of which is selected such that the non-stepped central area is approximately 30 mm and the entire central area is approximately 50 mm, so that adapted supports for different beam widths are created.
  • a gradation 13 of, for example, approximately 1 mm, the width of which is selected such that the non-stepped central area is approximately 30 mm and the entire central area is approximately 50 mm, so that adapted supports for different beam widths are created.
  • the central region 2 of the fan cap which is made of plastic material, is particularly important for the desired cap suction function, since the air passage openings 4 designed as elongated holes are provided here.
  • the air passage openings 4 are designed like a chimney, whereby the suction function is considerably improved, and extend in the form of an elongated row of holes with a small mutual distance over the length of the cap.
  • the mouth plane 5 of each air passage opening 4 runs essentially parallel to the plane of the central region 2, and the longitudinal walls 7, 8 of the individual air passage openings 4 have different inclinations with respect to the plane of the central region 2, such that in the direction of the flow running from the inside to the outside sets a predeterminable reduction in cross-section.
  • the longitudinal wall 7 of the air passage opening 4 located on the outer edge is more inclined than the opposite longitudinal wall 8.
  • the edge region 3 is provided with support bumps 10 which are formed from the material of the edge region 3 by appropriate deformation.
  • the support bumps 10 can have different heights depending on the particular application; however, it is sufficient to provide two support hump heights, for example support hump 10 with a height of 6 mm or support hump 10 with a height of 12 mm.
  • the support bumps 10 preferably have a more inclined wall on the inflow side than the side facing the central region 2, where the boundary wall can run perpendicular to the plane of the edge region 3.
  • the outer edge of the edge region 3 is preferably angled at an obtuse angle, so that an edge strip 12, for example 3 mm wide, is formed.
  • a spoiler strip 11 is provided, which extends over the length of the fan cap.
  • the height of the spoiler strip 11 is less than the height of the longitudinal walls 7, 8 of the air passage openings 4 and is preferably about 3 mm.
  • the spoiler strip 11 is expediently inward by approximately 15 °, ie. H. inclined towards the air passage openings 4.
  • the fastening region 1 and the central region 2 together form an angle of approximately 150 °, and the edge region 3 expediently forms an angle of approximately 45 ° with the horizontal.
  • the air passage openings 4 are always located at the same outer point in relation to the different ridge tiles used in practice, and thus the desired and required vacuum is guaranteed for each type of ridge tile. This is achieved by changing the width dimension V of the central region 2 in accordance with the respective requirements, but always keeping the distance K between the outer edge of the cap and the air passage openings 4 constant.
  • the dimension V can be 40/50/60/70 mm, but the dimension K remains unchanged.
  • Fig. 2 shows the fan cap according to Fig. 1 from above.
  • the through openings 4 which run along a longitudinal line and which can be provided in the region of their center with a connecting or stiffening web 14 which is located in the region of the mouth plane 5 of the air through openings 4.
  • the support bumps 10 are each located in the area between two successive air passage openings 4 and in the middle area in between.
  • the fastening area 1 is provided with a plurality of openings 15 which are at the same mutual distance.
  • the effective slot width of an air passage opening 4 is preferably 12 mm and the slot length of an air passage opening 4 is 125 mm, the arrangement being such that there is a fan cross-sectional area of 105 cm 2 on one side of the cap; this dimensioning produces particularly good values, even when there is a pronounced acute-angle flow against the air passage openings 4 in practice.
  • the mutual spacing of the air passage openings 4 which follow one another in a line is expediently approximately 15 mm, while an open area of slightly more than 30 mm is provided at the end regions of the respective cap, which can be used for overlapping.
  • FIG. 3 now shows a section of a fan cap according to the teaching of the invention, namely with flaps 16 provided on the fan cap.
  • a pivotably mounted flap 16 is connected upstream of each air passage opening 4.
  • the flaps 16 can be pivoted in the event of an inflow from the outside into a position which changes the free flow cross section for the inflowing air.
  • the free air flow cross section which results between the outer cap surface and the ridge tiles (not shown) which overlap it is preferably reduced by the flaps 16 pivoted in the direction of their end position (their starting position is shown).
  • the flaps 16 are each pivotally mounted about a horizontal axis 18.
  • the pivot axes 18 are adjacent to the air passage openings 4, which are designed as elongated holes and extend in the longitudinal direction of the cap. Furthermore, the flaps 16 are aligned parallel to the elongated air passage openings 4.
  • Transverse webs 20 are provided on the outer surface of the cap. The webs 20 extend approximately from the central region 2 to approximately the lower edge of the respective edge region 3.
  • the air passage openings 4 and the associated flaps 16 are each arranged between two such webs 20.
  • the webs 20 are preferably also designed to support the ridge tiles (not shown).
  • the air passage openings 4 have a chimney-like shape. Here they have the chimney-like air openings 4 delimiting longitudinal walls 7, 8 have a lower height than the associated flaps 16.
  • projections 22 are provided to limit the pivoting movement of the flaps 16.
  • the flaps 16 are somewhat longer than the air passage openings 4 designed as elongated hole openings.
  • the projections 22 are each arranged on the two sides of the air passage openings 4.
  • the height of the projections 22 corresponds at least substantially to the height of the flaps 16, but is less than the height of the webs 20, which preferably support the ridge tiles.
  • the pivot axes 18 of the flaps 16 directly adjacent to the air passage openings 4 are mounted in the webs 20.
  • recesses are provided in the webs 20, the cross-section of which is substantially larger than that of the pivot axis 18 in question.
  • the height of the flaps 16 corresponds at least essentially to the width of the air passage openings 4 measured in the transverse direction of the cap.
  • Fig. 3 shows the flaps 16 in their starting position. In this starting position, the flaps 16 are still a slight distance from the outer surface of the cap in order to form a gap, so that the air flow can act on the flaps from below and lift them up. Because of the central symmetrical design seen in the longitudinal direction, the flaps 16 are accordingly raised on the wind inflow side, while they remain in their initial position on the wind downstream side. The flaps 16 are each reset by their own weight. In principle, however, it is also conceivable to make the necessary provision for. B. ensure by spring elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Duct Arrangements (AREA)
  • Ventilation (AREA)
  • Finger-Pressure Massage (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Air-Flow Control Members (AREA)

Claims (15)

  1. Chapeau de ventilation pour la ventilation arrière de toits à prévoir dans la zone du faîte ou de la crête, comprenant une zone de fixation (1), une zone médiane (2) présentant des ouvertures (4) pour la pénétration de l'air, ainsi qu'une zone marginale (3), les ouvertures (4) pour la pénétration de l'air étant réalisées en ouvertures oblongues en forme de cheminée s'étendant parallèlement à la direction longitudinale du chapeau et les plans des orifices (5) des ouvertures (4) pour la pénétration de l'air s'étendant de préférence au moins essentiellement parallèlement au plan de la zone médiane (2), caractérisé en ce qu'on place en amont d'au moins une partie des ouvertures (4) pour la pénétration de l'air un clapet (16) monté en pivotement qui, lors d'un afflux d'air provenant de l'extérieur, peut pivoter dans une position modifiant la section transversale libre d'écoulement pour l'air qui afflue, et qui reprend sa position initiale en particulier de par son propre poids.
  2. Chapeau de ventilation selon la revendication 1, caractérisé en ce que les clapets (16) sont respectivement montés en pivotement autour d'un axe horizontal (18) et sont alignés parallèlement aux ouvertures (4) pour la pénétration de l'air.
  3. Chapeau de ventilation selon la revendication 1 ou 2, caractérisé en ce qu'on prévoit des entretoises (20) s'étendant transversalement à la surface externe du chapeau, en particulier pour servir d'appui aux tuiles faîtières, les ouvertures (4) pour la pénétration de l'air et les clapets (16) qui leur sont attribués étant disposés entre deux entretoises (20).
  4. Chapeau de ventilation selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les parois longitudinales (7, 8) délimitant les ouvertures (4) en forme de cheminée pour la pénétration de l'air présentent une hauteur inférieure à celle des clapets (16) qui leur sont attribués.
  5. Chapeau de ventilation selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, sur la surface externe du chapeau, sont disposées des saillies (22) pour limiter les mouvements de pivotement des clapets (16), de préférence respectivement des deux côtés des ouvertures (4) pour la pénétration de l'air, la hauteur des saillies (22) correspondant au moins essentiellement à la hauteur des clapets (16).
  6. Chapeau de ventilation selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la section transversale d'écoulement libre, ménagée entre la surface externe du chapeau et les tuiles faîtières surplombant cette dernière, est réduite par les clapets ayant pivoté dans leur position finale.
  7. Chapeau de ventilation selon l'une quelconque des revendications 3 à 6, caractérisé en ce que les axes de pivotement (18) attribués aux clapets (16) sont montés dans les entretoises (20), de préférence dans des évidements dont la section transversale est essentiellement supérieure à celle des axes de pivotement (18).
  8. Chapeau de ventilation selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la hauteur des clapets (16) correspond au moins essentiellement à la largeur des ouvertures (4) pour la pénétration de l'air mesurée en direction transversale du chapeau.
  9. Chapeau de ventilation selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les clapets (16) qui prennent leur position de départ présentent un écartement par rapport à la surface externe du chapeau pour former un espace intermédiaire.
  10. Chapeau de ventilation selon l'une quelconque des revendications 1 à 9, caractérisé en ce que, dans la zone médiane (2), on prévoit une série d'ouvertures (4) en forme de cheminée pour la pénétration de l'air disposées en une ligne, dont l'écartement mutuel est essentiellement égal ou quelque peu supérieur à la largeur des trous oblongs et en ce que la longueur des trous oblongs est en particulier à peu près dix fois supérieure à la largeur des trous oblongs.
  11. Chapeau de ventilation selon l'une quelconque des revendications 1 à 10, caractérisé en ce que les parois longitudinales (7, 8) des ouvertures (4) pour la pénétration de l'air possèdent des inclinaisons différentes par rapport au plan de la zone médiane (2) conduisant à un rétrécissement de cheminée en direction de l'écoulement, la paroi longitudinale (7) des ouvertures (4) pour la pénétration de l'air disposée du côté de l'arête externe, est inclinée par rapport au plan de la zone médiane (2) en direction de la zone de fixation (1) de manière plus prononcée que la paroi longitudinale (8) disposée du côté de la zone de fixation (1).
  12. Chapeau de ventilation selon l'une quelconque des revendications 1 à 11, caractérisé en ce que la hauteur de cheminée est quelque peu inférieure ou essentiellement égale à la largeur des trous oblongs.
  13. Chapeau de ventilation selon l'une quelconque des revendications 1 à 12, caractérisé en ce que la zone médiane (2) forme un angle obtus avec la zone marginale (3), la distance entre la série d'ouvertures (4) pour la pénétration de l'air et l'endroit de brisure (9) formé en l'occurrence, est égale indépendamment de la largeur respective du chapeau mesurée entre l'arête externe et la zone de fixation (1), et la distance entre les ouvertures (4) pour la pénétration de l'air et l'arête externe du chapeau est constante, en particulier indépendamment de la largeur respective de la zone médiane (2).
  14. Chapeau de ventilation selon l'une quelconque des revendications 1 à 13, caractérisé en ce que, sur l'arête externe du chapeau, on prévoit une nervure (11) faisant office de déporteur s'étendant sur la longueur du chapeau, et la zone marginale (3) présente de préférence une bande marginale coudée (12).
  15. Chapeau de ventilation selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que, dans la zone marginale (3), sont disposées des bosses d'appui (10) obtenues par démoulage rapportées aux ouvertures (4) pour la pénétration de l'air prévues dans la zone médiane (2), respectivement dans la zone comprise entre deux ouvertures successives (4) pour la pénétration de l'air et respectivement dans la zone du milieu d'une ouverture (4) pour la pénétration de l'air.
EP90101911A 1989-02-02 1990-01-31 Dispositif de ventilation de toiture Expired - Lifetime EP0381192B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3903157 1989-02-02
DE19893903157 DE3903157C2 (de) 1989-02-02 1989-02-02 Lüfterkappe zur Hinterlüftung von Dächern
DE3913994 1989-04-27
DE19893913994 DE3913994A1 (de) 1989-04-27 1989-04-27 First- oder gratluefterkappe

Publications (2)

Publication Number Publication Date
EP0381192A1 EP0381192A1 (fr) 1990-08-08
EP0381192B1 true EP0381192B1 (fr) 1993-10-20

Family

ID=25877384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101911A Expired - Lifetime EP0381192B1 (fr) 1989-02-02 1990-01-31 Dispositif de ventilation de toiture

Country Status (5)

Country Link
EP (1) EP0381192B1 (fr)
AT (1) ATE96194T1 (fr)
DE (1) DE59003097D1 (fr)
DK (1) DK0381192T3 (fr)
ES (1) ES2045585T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6958181B1 (en) 2003-09-05 2005-10-25 Hewlett-Packard Development Company, L.P. Protected activators for use in leuco dye compositions

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1295788B (de) * 1964-01-13 1969-05-22 Eternit Ag Firstentluefter
DE3511798A1 (de) * 1984-05-30 1985-12-05 Alfons 5758 Fröndenberg Knoche Firstentlueftung an daechern
DE8527095U1 (fr) * 1985-09-21 1987-09-17 Gehring, Manfred, 7290 Freudenstadt, De
DE8713110U1 (fr) * 1987-09-30 1988-01-21 Fleck, Oskar, 4354 Datteln, De
EP0463637B1 (fr) * 1988-04-13 1994-10-26 Norm A.M.C. Ag Système d'aération de faîtage

Also Published As

Publication number Publication date
EP0381192A1 (fr) 1990-08-08
ATE96194T1 (de) 1993-11-15
ES2045585T3 (es) 1994-01-16
DE59003097D1 (de) 1993-11-25
DK0381192T3 (da) 1993-11-15

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