EP2062617A1 - Clapet coupe-feu - Google Patents

Clapet coupe-feu Download PDF

Info

Publication number
EP2062617A1
EP2062617A1 EP08252384A EP08252384A EP2062617A1 EP 2062617 A1 EP2062617 A1 EP 2062617A1 EP 08252384 A EP08252384 A EP 08252384A EP 08252384 A EP08252384 A EP 08252384A EP 2062617 A1 EP2062617 A1 EP 2062617A1
Authority
EP
European Patent Office
Prior art keywords
blade
damper according
seal
damper
sleeve
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.)
Granted
Application number
EP08252384A
Other languages
German (de)
English (en)
Other versions
EP2062617B1 (fr
Inventor
Michael Buller Backham
Maria Ebelia Fernandez
Paul Nicholas White
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.)
Swegon Air Management Ltd
Original Assignee
Ruskin Air Management 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 Ruskin Air Management Ltd filed Critical Ruskin Air Management Ltd
Publication of EP2062617A1 publication Critical patent/EP2062617A1/fr
Application granted granted Critical
Publication of EP2062617B1 publication Critical patent/EP2062617B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers

Definitions

  • the present invention relates to a fire and/or smoke damper of the kind that is used to seal an air distribution duct in the event of a fire.
  • dampers in ducts particularly those that penetrate a fire barrier or wall. Such dampers are arranged to close the duct in the event of temperatures within and/or outside the duct exceeding a pre-determined threshold. This may be done on receipt of an external signal received from a fire or smoke detection system or a fire alarm panel. Dampers of this type are specified where it is necessary to ensure the integrity of the fire barrier and thereby prevent the spread of a fire through a duct penetrating the fire barrier. With such an arrangement the damper is normally open but closes in the event of an excess temperature being sensed.
  • One example in which such dampers are used is in air ventilation systems.
  • Typical dampers comprise a casing that fits into the duct and houses one or more steel blades which can be rotated through 90 degrees between a first position in which the blade or blades are edge-on to the direction of the ducts and a second position in which the blade or blades extend transversely with respect to the direction of the duct so as to form an effective barrier across the duct.
  • the blades are held in the first (open) position to allow air flow through the ducts by means, for example, of a spring return actuator.
  • a single blade damper is pivotally disposed in the casing and has a peripheral seal for sealing engagement with the casing when in the closed position so as to restrict air flow and prevent the progress of a fire in the duct.
  • a fire and/or smoke damper for a duct comprising a blade for movement between an open position and a closed position in said duct, the blade having a peripheral seal for sealing engagement with a surface, the seal comprising a core of intumescent material and a deformable sleeve surrounding said core.
  • the sleeve provides a seal at relatively low temperatures but in the event of a fire the sleeve may develop leaks in which case the intumescent material expands to fill the sleeve and maintain the seal. There may be provided an air gap between sleeve and core to accommodate such expansion.
  • the sleeve is deformable to provide the sealing characteristics and may be flexible and/or resilient.
  • the blade may conveniently have a peripheral channel in which seal is received.
  • the seal preferably seal extends outwards of said channel so as to come into sealing contact with a surface.
  • the blade may be substantially circular and the seal may be substantially annular but it is to be understood that the blade may take any desirable or suitable shape including, for example, rectangular or square.
  • the blade may comprise two disc-shaped members overlying one another and configured to form the channel at their periphery.
  • One of the disc shaped members may be generally planar and the other may be formed at its periphery to provide the channel.
  • the sleeve may comprise a woven material that is preferably fire-resistant. It may comprise a woven glass-fibre scrim.
  • the fibres of the woven material may be coated with silicon or rubber or similar to afford sealing characteristics.
  • the fibres may be arranged into multifilament yarns, each yarn being coated. In the event of a fire the coating may perish at relatively high temperatures leaving the sleeve uncoated and prone to leakage.
  • the blade may be pivotally mounted in a frame that defines a conduit, the blade being movable between a first position in which the conduit is open and a second position in which it closes the conduit.
  • the seal may extend outwardly from the periphery of the blade to an inside surface of the frame so as to seal the blade to the surface.
  • the sleeve may be compressed between the surface and the blade periphery when the blade is in said second position.
  • the illustrated damper comprises a cylindrical frame 10 for mounting in a duct (not shown) or between duct portions.
  • the frame defines a conduit 11 that is closable by a disc-shaped damper blade 12 pivotally disposed in the conduit.
  • the frame 10 and damper blade 12 are typically manufactured from thin sheet galvanised steel, their diameters depending on the application.
  • the blade 12 is pivotally disposed in the conduit 11 on a pivot pin 13 that extends into the wall of the frame 10 on each side. If necessary the ends of the pin 13 may be received in bearings.
  • the periphery of the damper blade 12 is fitted with a seal 14 and in use, the damper blade 12 is pivotal between a closed position where it substantially closes the conduit 11 such that the seal 14 bears against the inside surface of the frame in a sealing relationship and an open position where it is moved through 90 degrees so that the conduit is fully open.
  • the damper blade 12 is constructed from two coterminous discs 15, 16 of galvanised steel plate that are joined together by any suitable means.
  • a first disc 15 is planar across is diameter but the second disc 16 is axially stepped at its outer periphery so as to define a peripheral annular channel 17 with the first disc.
  • the channel 17 is designed to receive the seal 14 and may be typically 5mm wide and of a similar depth.
  • the seal 14 (see figure 3 ) is substantially annular and comprises an inner core 18 of intumescent material bead surrounded by a substantially cylindrical and flexible outer sleeve 19 of glass fibre scrim comprising a plurality of multifilament yarns each coated with silicon. It is to be appreciated that other suitable materials may be used both for the fibres and the coating. In particular, the coating may be polyester or acrylic based. Coating each yarn in this manner allows the sleeve to bend into the annular form without it kinking. Intumescent materials are well known in the art and typically comprise an expansible graphite but any suitable material is contemplated.
  • the outer sleeve 19 When the seal 14 is inserted into the channel 17 the outer sleeve 19 is squeezed inwards in an axial direction so that it fits between the channel walls. In squeezing the sleeve in this way it deforms to the radially elongated state depicted in figure 2 .
  • the sleeve 19 In the case of a channel 17 that has a 5mm depth, the sleeve 19 may be in the region of 7mm diameter. When deformed it extends radially outboard of the channel 17 and contacts the inner surface 20 of the frame 10.
  • the intumescent core 18 may be typically 2.5-3mm such that there is an air gap 20 between the core 18 and the sleeve 19. When the core expands it fills the air gap and presses on the sleeve so as to improve the sealing relationship.
  • an actuator In the event of a fire or receipt of an appropriate external signal representing detection of a fire or smoke or an equivalent test signal, an actuator is automatically operated to pivot the damper blade to the closed position.
  • Actuator mechanisms and their operation are known in the art and are not described herein on the basis that they are not pertinent to the inventive aspects of the damper.
  • the sleeve 19 of the seal 14 comes into contact with the inner surface 20 of the frame 10 and is compressed slightly radially inwards thereby providing a degree of sealing at low temperatures. If the heat generated by the fire continues to increase the temperature in the duct rises to such a level that the silicon coating perishes at which point the seal would ordinarily become impaired.
  • the intumescent core 18 expands to fill the air gap 20 to enhance the stealing relationship with the inner surface 20 of the frame.
  • the expansion of the core ensures that the sleeve, whose sealing function might be impaired as a result of the fire or temperature increase, is pressurised into sealing against the inside surface of the frame.
  • the glass fibre scrim of the sleeve 19 serves to retain the intumescent material 18 from further expansion and from coming into direct contact with the flame.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air-Flow Control Members (AREA)
  • Pens And Brushes (AREA)
  • Surgical Instruments (AREA)
  • Glass Compositions (AREA)
EP08252384A 2007-08-01 2008-07-11 Clapet coupe-feu Active EP2062617B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0717018.6A GB0717018D0 (en) 2007-08-01 2007-08-01 A damper

Publications (2)

Publication Number Publication Date
EP2062617A1 true EP2062617A1 (fr) 2009-05-27
EP2062617B1 EP2062617B1 (fr) 2011-08-31

Family

ID=38617113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08252384A Active EP2062617B1 (fr) 2007-08-01 2008-07-11 Clapet coupe-feu

Country Status (3)

Country Link
EP (1) EP2062617B1 (fr)
AT (1) ATE522252T1 (fr)
GB (1) GB0717018D0 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1018315A5 (nl) * 2009-04-06 2010-08-03 Rf Technologies Nv Brandwerende ventilatieklep.
GB2473424A (en) * 2009-08-27 2011-03-16 Thomas Welsh A smoke extraction system
ITMI20101394A1 (it) * 2010-07-28 2012-01-29 Posa S P A Serrande tagliafuoco dotate di guarnizioni intumescenti a corpo unico per tenuta ai fumi freddi e caldi
GB2499818A (en) * 2012-02-29 2013-09-04 Bsb Engineering Services Ltd Intumescent seal for fire damper blade
EP2995353A1 (fr) * 2014-09-12 2016-03-16 Werner Wildeboer Installation de desenfumage et de protection contre les incendies pour installations de ventilation, comprenant au moins un element de blocage
WO2022011419A1 (fr) * 2020-07-14 2022-01-20 Ig6 Pty Ltd Collier coupe-feu amélioré
EP3984602A1 (fr) 2020-10-19 2022-04-20 Ekovent Ab Amortisseur d'incendie pour système de ventilation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980272A (en) * 1974-05-16 1976-09-14 Nittan Company, Limited Fire smoke damper
EP0447944A1 (fr) * 1990-03-17 1991-09-25 Schako Metallwarenfabrik Ferdinand Schad Kg Volet coupe-feu
DE29507931U1 (de) * 1995-05-13 1995-08-10 Wildeboer, Werner, Dipl.-Ing., 26826 Weener Absperrelement für eine Brandschutz-Absperrvorrichtung
DE20317181U1 (de) * 2003-11-05 2005-03-17 Gluske Gmbh Dichtung
WO2007068786A1 (fr) * 2005-12-13 2007-06-21 Fläkt Woods AB Obturateur coupe-feu

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980272A (en) * 1974-05-16 1976-09-14 Nittan Company, Limited Fire smoke damper
EP0447944A1 (fr) * 1990-03-17 1991-09-25 Schako Metallwarenfabrik Ferdinand Schad Kg Volet coupe-feu
DE29507931U1 (de) * 1995-05-13 1995-08-10 Wildeboer, Werner, Dipl.-Ing., 26826 Weener Absperrelement für eine Brandschutz-Absperrvorrichtung
DE20317181U1 (de) * 2003-11-05 2005-03-17 Gluske Gmbh Dichtung
WO2007068786A1 (fr) * 2005-12-13 2007-06-21 Fläkt Woods AB Obturateur coupe-feu

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1018315A5 (nl) * 2009-04-06 2010-08-03 Rf Technologies Nv Brandwerende ventilatieklep.
GB2473424A (en) * 2009-08-27 2011-03-16 Thomas Welsh A smoke extraction system
ITMI20101394A1 (it) * 2010-07-28 2012-01-29 Posa S P A Serrande tagliafuoco dotate di guarnizioni intumescenti a corpo unico per tenuta ai fumi freddi e caldi
EP2412409A1 (fr) 2010-07-28 2012-02-01 Posa S.P.A. Joints intumescents d'un seul tenant pour garantir l'étanchéité contre la fumée froide et chaude, en particulier pour registres coupe-feu
GB2499818A (en) * 2012-02-29 2013-09-04 Bsb Engineering Services Ltd Intumescent seal for fire damper blade
GB2499818B (en) * 2012-02-29 2015-09-02 Bsb Engineering Services Ltd Damper blade
EP2995353A1 (fr) * 2014-09-12 2016-03-16 Werner Wildeboer Installation de desenfumage et de protection contre les incendies pour installations de ventilation, comprenant au moins un element de blocage
WO2022011419A1 (fr) * 2020-07-14 2022-01-20 Ig6 Pty Ltd Collier coupe-feu amélioré
EP3984602A1 (fr) 2020-10-19 2022-04-20 Ekovent Ab Amortisseur d'incendie pour système de ventilation

Also Published As

Publication number Publication date
EP2062617B1 (fr) 2011-08-31
GB0717018D0 (en) 2007-10-10
ATE522252T1 (de) 2011-09-15

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