EP0476531B1 - Lüfterkappe zur Hinterlüftung von Dächern im Firstbereich - Google Patents

Lüfterkappe zur Hinterlüftung von Dächern im Firstbereich Download PDF

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Publication number
EP0476531B1
EP0476531B1 EP91115514A EP91115514A EP0476531B1 EP 0476531 B1 EP0476531 B1 EP 0476531B1 EP 91115514 A EP91115514 A EP 91115514A EP 91115514 A EP91115514 A EP 91115514A EP 0476531 B1 EP0476531 B1 EP 0476531B1
Authority
EP
European Patent Office
Prior art keywords
slot apertures
cap according
ventilation cap
region
spoiler
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
EP91115514A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0476531A1 (de
Inventor
Willy Gillmann
Fritz Gödl
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 GMBH & CO. KG
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
Application filed by Norm AMC AG filed Critical Norm AMC AG
Publication of EP0476531A1 publication Critical patent/EP0476531A1/de
Application granted granted Critical
Publication of EP0476531B1 publication Critical patent/EP0476531B1/de
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 for the rear ventilation of roofs in the ridge area, with a fastening area and an edge area, between which there is an elongated hole opening for air passage, wherein two immediately successive elongated hole openings are each assigned an air duct that runs essentially parallel to the elongated hole openings.
  • Such a fan cap is already known (cf. European laid-open specification 0 330 746).
  • this known fan cap no effective rear ventilation of the roof interior is achieved, but only ventilation, since an air flow is introduced into the roof interior via the slot openings provided in the fan cap.
  • this can be particularly disadvantageous if the air flow carries flying snow or rain with it and in this way moisture is carried into the roof interior.
  • Another disadvantage of the known fan cap is that water deposited on the fan cap can be pressed into the elongated holes by the air flow that occurs, but at least the water flow is impeded by the air flow that occurs.
  • a ventilation cap for ventilating roofs in the ridge area is known from German Offenlegungsschrift 3 903 157.
  • This fan cap is provided with a fastening area and an edge area, between which there is a chimney-like elongated hole opening for the passage of air.
  • the chimney-like arrangement of the oblong hole openings ensures that even with a small flow against the chimney-shaped elongated hole openings, a negative pressure is formed above the fan cap, which causes good roof ventilation.
  • the object of the invention is now to provide a fan cap of the type mentioned, which ensures effective roof ventilation, prevents the entry of water into the roof as much as possible and enables good water drainage from the water cap.
  • the air guide bars provided according to the invention which are arranged in the area between the individual elongated hole openings in such a way that an air flow through the water drainage areas is substantially prevented or prevented, the air flow is also deflected in this area in such a way that it contributes significantly to the formation of negative pressure.
  • a first practical embodiment of the invention is characterized in that the height of the air guide bar essentially corresponds to the height of the adjacent, upwardly extending chimney wall of the associated slot opening. This simple measure ensures that the air flow influenced by the air guide webs contributes particularly effectively to the formation of negative pressure.
  • the effect of the air flowing into the fan cap can be further improved in that the height of the chimney wall of the elongated hole openings adjacent to the edge area, based on the top of the central area, is approximately twice as large as the height of the chimney wall adjacent to the fastening area.
  • a water drainage channel is provided between the air guide web and the chimney walls of the adjacent elongated holes, which preferably has a width of approximately 1 mm to 2 mm.
  • a particularly suitable material for the production of the fan cap according to the invention is polypropylene.
  • FIG. 1 shows a fan cap with a fastening area 10, a middle area 11 and an edge area 13, the individual areas merging into one another via kinks. By dividing this cap in the middle, cap halves are created which can be used in the same way as the overall cap.
  • the fastening area 10 is provided on the edge with a gradation 19, for example, approximately 1 mm, the width of which is selected such that the non-stepped fastening area 10 is approximately 30 mm and the entire fastening area is approximately 50 mm, so that adapted supports are created for different bar strips.
  • the central region 11 of the plastic material, for. B. polypropylene, existing fan cap has chimney-like elongated holes 12, which are particularly important for the desired suction function.
  • the chimney-shaped slot openings 12 are surrounded by a chimney wall 16, the height h 1 on the side facing the fastening area 10 is approximately half the height h 2 of the chimney wall 16 on the edge area 13 side of the slot openings 12.
  • the height h 1 Chimney wall 16 on the side of the fastening area 10 is, for. B. 3 to 4 mm, while the height h2 of the chimney wall 16 on the other side of the slot opening 12 is approximately 6 to 10, preferably 8 mm.
  • the mouth plane 20 of the elongated hole openings 12 extends at a small angle ⁇ inclined to the plane 21 of the fastening region 10.
  • the angle ⁇ is approximately between 5 ° and 10 °.
  • air guide webs 14 are provided, the height H of which essentially corresponds to the height h 1 of the adjacent chimney wall 16.
  • the air guide webs 14 are in the common end region of two immediately successive elongated holes 12, which forms a water drainage region 15, arranged.
  • water drainage channels 17 are provided, which have a width of about 1 to 2 mm and make it possible for the water that has accumulated on the upper chimney wall 16 to flow off via the water drainage area 15 can.
  • the length 1 of the air guide webs 14 corresponds approximately to 1.2 times to 2 times the distance a between two successive slot openings 12.
  • the length A of the slot openings 12, which are arranged parallel to the longitudinal direction L of the fan cap, is approximately four to six times as large as the distance a between two successive slot openings 12.
  • the slot openings 12 arranged in the middle in the central region 11 have a width b that is corresponds approximately to half the width B of the central region 11.
  • Support bumps 18 are arranged in the edge region 13 of the fan cap, which are formed from the material of the edge region 13 by corresponding deformation.
  • the support bumps 18 can have a different height depending on the respective application; in the described embodiment, however, it is preferably provided that all the support bumps 18 have the same height.
  • Brushes 22 are arranged on the outer edge 13 'of the edge region 13 and are inserted with holding strips 23 into a holding groove 24 which is provided between a clamp 25 and the outer edge 13' of the edge region 13.
  • the function of the fan cap according to the invention is as follows:
  • the edge of the chimney walls 16 of the chimney-like elongated hole openings 12 of a fan cap which is arranged under the ridge tiles in a roof, flows against the edge approximately parallel to the edge region 13 or to the central region 11, the inflowing air flows upwards from the corresponding chimney wall 16 deflected and thus creates a suction effect over the slot opening 12.
  • the inflowing air builds up as a result of the air guide webs 14 and is consequently likewise directed upward, as a result of which an additional suction effect is obtained.
  • the fan cap which is shown in FIGS. 2 and 3 b, differs from the fan cap according to FIGS. 1 and 3 a only in the arrangement of the air guiding webs 14, which in this exemplary embodiment are on the side of the slot openings 12 facing the edge region 13 is arranged. With this arrangement, air flowing from the edge area 13 against the chimney walls 16 and the air guide webs 14 is deflected evenly upwards over the entire length of the fan cap, so that an improved suction effect is achieved at the slot openings 12.
  • the arrangement of the support bumps 18 with respect to the elongated hole openings 12 can be chosen as desired in the elongated hole cap according to the invention, as is indicated by the different arrangement of the support bumps 18 in the fan caps according to FIGS. 3a and 3b, since the support bumps 18 are not essential Have an influence on the incoming air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Soil Working Implements (AREA)
  • Superstructure Of Vehicle (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Closures For Containers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Air-Flow Control Members (AREA)
EP91115514A 1990-09-14 1991-09-13 Lüfterkappe zur Hinterlüftung von Dächern im Firstbereich Expired - Lifetime EP0476531B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9013108U 1990-09-14
DE9013108U DE9013108U1 (de) 1990-09-14 1990-09-14 Lüfterkappe zur Hinterlüftung von Dächern im Firstbereich

Publications (2)

Publication Number Publication Date
EP0476531A1 EP0476531A1 (de) 1992-03-25
EP0476531B1 true EP0476531B1 (de) 1994-01-05

Family

ID=6857519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115514A Expired - Lifetime EP0476531B1 (de) 1990-09-14 1991-09-13 Lüfterkappe zur Hinterlüftung von Dächern im Firstbereich

Country Status (7)

Country Link
EP (1) EP0476531B1 (fi)
AT (1) ATE99761T1 (fi)
DE (2) DE9013108U1 (fi)
DK (1) DK0476531T3 (fi)
ES (1) ES2048545T3 (fi)
FI (1) FI96984C (fi)
NO (1) NO180391C (fi)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4244283A1 (de) * 1992-12-28 1994-06-30 Mage Dsi Gmbh Werke Fuer Kunst First- und/oder Gratabdeckung
DK0657598T3 (da) * 1993-12-10 1999-02-15 Manfred Dr Gehring Rygnings- og/eller mønningsafdækning samt fremgangsmåde til fremstilling af en rygnings- og/eller mønningsafdækning
GB2408755A (en) * 2003-12-04 2005-06-08 Norm Amc Ag A ventilation strip for a hip, ridge or valley of a roof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8416540U1 (de) * 1984-09-06 Knoche, Alfons, 5758 Fröndenberg Firstentlüftung an Dächern
US3073235A (en) * 1959-02-26 1963-01-15 Smith Roof ventilators
DE3703885A1 (de) * 1987-02-09 1988-08-18 Alfons Knoche Zwischen die dacheindeckung und die firsteindeckung von satteldaechern einfuegbares dichtungselement
DE8712892U1 (de) * 1987-09-24 1987-12-17 Norm A.M.C. Ag, Erstfeld Lüfterkappe für First- und Gratabdeckungen
DE3806683A1 (de) * 1988-03-02 1989-09-14 Kloeber Johannes Firststreifen
DE3829408C2 (de) * 1988-08-30 1996-09-05 Norm Amc Ag Vorrichtung zur Hinterlüftung von Dächern
DE3933972A1 (de) * 1989-10-11 1991-04-18 Gehring Gmbh Maschf Firstentlueftung

Also Published As

Publication number Publication date
FI914318A0 (fi) 1991-09-13
FI96984B (fi) 1996-06-14
FI914318A (fi) 1992-03-15
EP0476531A1 (de) 1992-03-25
DK0476531T3 (da) 1994-03-14
DE59100807D1 (de) 1994-02-17
NO913618D0 (no) 1991-09-13
FI96984C (fi) 1996-09-25
ES2048545T3 (es) 1994-03-16
DE9013108U1 (de) 1990-11-15
NO913618L (no) 1992-03-16
ATE99761T1 (de) 1994-01-15
NO180391C (no) 1997-04-09
NO180391B (no) 1996-12-30

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