EP0275691A1 - Lüfter - Google Patents

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Publication number
EP0275691A1
EP0275691A1 EP87311287A EP87311287A EP0275691A1 EP 0275691 A1 EP0275691 A1 EP 0275691A1 EP 87311287 A EP87311287 A EP 87311287A EP 87311287 A EP87311287 A EP 87311287A EP 0275691 A1 EP0275691 A1 EP 0275691A1
Authority
EP
European Patent Office
Prior art keywords
strips
louvres
ventilator
louvre
pile
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.)
Withdrawn
Application number
EP87311287A
Other languages
English (en)
French (fr)
Inventor
John Wheeler
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.)
Colt International Holdings AG
Colt International Ltd
Original Assignee
Colt International Holdings AG
Colt International Ltd
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 Colt International Holdings AG, Colt International Ltd filed Critical Colt International Holdings AG
Publication of EP0275691A1 publication Critical patent/EP0275691A1/de
Withdrawn legal-status Critical Current

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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
    • E06B7/084—Louvre doors, windows or grilles with rotatable lamellae
    • E06B7/086—Louvre doors, windows or grilles with rotatable lamellae interconnected for concurrent movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation

Definitions

  • the present invention comprises improvements in ventilators and concerns controllable, louvred ventilators more particularly, although not exclusively, for roof mounting.
  • Such roof mounted ventilators provide for natural extract ventilation and for the exhaust of heat and smoke in the event of fire.
  • the louvres In order to facilitate the manufacture of louvred ventilators, and reduce costs, it is convenient to construct the louvres e.g. as aluminium extrusions, without louvre ends, and to seal the gaps between the louvre ends and the ventilator frame with pile weatherseal strips when the louvres are in their closed position.
  • Such seals function first as draught seals and act cosmetically to avoid daylight entry through the afore­mentioned gaps when the ventilator is closed.
  • the seals then also act as water seals to some extent, although usually water collection and drainage channels are provided, inside the ventilator frame, to drain water penetrating past the seals and into the frame back out onto the outside of the roof for example.
  • the strip has to be interrupted, or local apertures provided in it, in order to accommodate the louvre pivots. This is a troublesome operation. If two piled weatherseal strips are provided, side by side to make up the required width of strip, the T-slots for mounting the strips dictate that a gap must be left between the strips. Such a gap forms a further leakage path for water running off the outside of the louvres, into the ventilator.
  • At least two side-by-side, pile weatherseal strips are provided having the top surfaces of their piles lying in a common plane and touching one another, the strips being of different transverse dimensions and having their T-slot mountings disposed in stepped relation­ship to one another.
  • the ventilator has a rectangular body comprising a base 10 presenting a base flange 11 for flashing the ventilator to the roof W.
  • the base flange 11 is flat in the present example but it may be of any of the standard shapes suitable for flashing it to different kinds of sloping roof cladding or to glazing bars used in roof lights.
  • the base 10 has an upstanding wall 12 defining a rectangular ventilation opening 14 through the base. Ventilation through the opening 14 is controlled by the louvres 15 which also prevent weather entry through the opening when the louvres are closed.
  • the ventilator further comprises a readily removable outer body part 20 made up of opposite pairs of straight channel sectioned side members 16 and end members 18 removably interconnected with one another at their adjacent ends.
  • the body part members 16, 18 are formed as extruded metal, e.g. aluminium, sections and each presents an equally spaced pair of walls extending away from the base flange 11 to the outside of the wall 12.
  • the walls 16 ⁇ , 18 ⁇ (see Figs. 1 and 3) of this pair of walls adjacent the wall 12 abut and interlock with the outside of the wall 12.
  • the adjacent walls 16 ⁇ , 18 ⁇ , of all the members 16, 18 substantially correspond with one another in cross-sectional size and shape to interfit with the wall 12 in the manner seen in Fig. 1.
  • the webs or floors 16 a , 18 a of the channel members 16, 18 abut the base flange 11.
  • the channel members 16, 18 act as internal drainage channels for water which runs off the louvres 15 into the body part 20 of the ventilator.
  • the other upstanding walls 16 ⁇ , 18 ⁇ of the channel members 16, 18 form a rectangular frame or box which shelters the ventilation opening when the louvres are open and which carries the pivots for the outer ends of the louvres 15.
  • These louvre end pivots 22 are arranged as seen in Fig.
  • louvres 15 are cut to the required length from metal, e.g. aluminium, extrusions of the section indicated in Fig. 1 and are additionally provided with leading and trailing edge formations 28, 29 which overlap one another in the closed position of the louvres, as best shown in Fig. 1.
  • leading edge formations 28 carry elastomeric seals 30, which may be lip seals, carried by the formations 28 which seals then act to resist water penetrating under the leading edges of the louvres, and water penetrating under the leading edges of the louvres is trapped in the trailing edge rain channels 32 which also act to catch and drain off water into the channel members 16 of the body part 20.
  • elastomeric seals 30, which may be lip seals, carried by the formations 28 which seals then act to resist water penetrating under the leading edges of the louvres, and water penetrating under the leading edges of the louvres is trapped in the trailing edge rain channels 32 which also act to catch and drain off water into the channel members 16 of the body part 20.
  • the louvre end pivots 22 are provided with bearing shoulders 34 which bear directly in the walls 16 ⁇ of the box and the pivot pins 22 are secured in the formations 24 by wing formations 22 ⁇ on the pins which occupy cross-cuts 36 in the formations 24, formed prior to assembly of the ventilator, the pins being driven into the formations 24 until the wings 22 ⁇ reach this position whereby the louvres 15 are predeterminedly positioned between the walls 16 ⁇ .
  • the pins To secure each louvre against rotation with respect to its pivot pins 22, the pins have splines 22 ⁇ which fit closely between the free edges of the channel formation 24 of the louvre.
  • the gaps between the louvre ends and the walls 16 ⁇ are sealed with pile weatherseal strips 38 a , 38 b mounted in open-ended T-slots 100, 101 formed on the insides of the walls 16 ⁇ and form gaps 37 (see Fig. 1) at the ends of the channels 32 for the drainage of water from these channels, when the louvres are in a closed position, into the channel members 16.
  • the louvres 15 extend, transversely, at a shallow angle relative to the lengthwise direction of the pile weatherseal strips 38 a , 38 b so as to be inclined downwardly towards the trailing edge rain channels 32 when the ventilator is mounted in a horizontal position.
  • the pile weather­seal strips 38 a , 38 b extend side-by-side with the top surfaces of their piles lying in a common plane and touching one another, the upper strip 38 a having larger transverse dimensions than the lower strip 38 b and the T-slot mountings 100, 101 being disposed in stepped relationship to one another, the T-slot mounting 101 being positioned closer to the adjacent louvre ends of the louvres 15 than the T-slot mounting 100.
  • the pile weatherseal strip 38 b is formed in sections, each section extending between an adjacent pair of the pivot pins 22 or between the pivot pin 22 and one end of a member 16 at the two ends of the ventilator respectively.
  • each strip 38 a , 38 b is wiped sideways in one direction only by the louvre ends as the louvres are opened and closed.
  • Each strip is, therefore, held firmly in its T-slot since there is no tendency to buckle the strip in its slot to drag the strip from beneth the undercut edges of the T-slot. Instead, the strip is urged entirely towards one undercut edge of the slot.
  • the bottom wall of the T-slots 101 are milled flat to accommodate the bottom fixed louvre seen at the left hand side in Fig. 1 and the louvre extends into contact with the side walls 16 ⁇ of the members 16 beneath the pile weatherseal strips which then seal the gaps between the fixed louvre and the walls 16 ⁇ .
  • a similar arrangement is adopted to accommodate the top fixed louvre. Any rain water seeping through the joints is collected in the rain channels 16 a 18 a , to be drained outside the ventilator body onto the roof.
  • the strips present a wide, flat uninterrupted pile surface in engagement with the louvre ends, sufficient to accommodate the slope of the louvres when in their closed position without leaving any substantial leakage gaps.
  • each channel member 16 may open through the wall 18 ⁇ to drain off water from the channels outside the body of the ventilator.
  • the louvre blades may be formed e.g. extruded from translucent material e.g. u.p.v.c. or polycarbonate. Other translucent louvre blade constructions e.g. framed constructions may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
EP87311287A 1987-01-06 1987-12-22 Lüfter Withdrawn EP0275691A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8700154 1987-01-06
GB08700154A GB2199652A (en) 1987-01-06 1987-01-06 Sealing louvred dampers in ventilators

Publications (1)

Publication Number Publication Date
EP0275691A1 true EP0275691A1 (de) 1988-07-27

Family

ID=10610292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87311287A Withdrawn EP0275691A1 (de) 1987-01-06 1987-12-22 Lüfter

Country Status (4)

Country Link
EP (1) EP0275691A1 (de)
AU (1) AU8298187A (de)
GB (1) GB2199652A (de)
ZA (1) ZA879639B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275793A1 (de) * 2001-07-09 2003-01-15 Santiago Dr. Calatrava Valls Vorrichtung mit verstellbaren Elementen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285860B (en) * 1993-10-30 1998-03-18 Gilberts Louvred apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2045917A (en) * 1979-03-29 1980-11-05 Colt Int Ltd Roof ventilators

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2045917A (en) * 1979-03-29 1980-11-05 Colt Int Ltd Roof ventilators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275793A1 (de) * 2001-07-09 2003-01-15 Santiago Dr. Calatrava Valls Vorrichtung mit verstellbaren Elementen

Also Published As

Publication number Publication date
GB8700154D0 (en) 1987-02-11
ZA879639B (en) 1988-06-20
GB2199652A (en) 1988-07-13
AU8298187A (en) 1988-07-07

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

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Effective date: 19890130