EP0902711B1 - Ameliorations apportees a des barrieres antifumee et antifeu ou les concernant - Google Patents

Ameliorations apportees a des barrieres antifumee et antifeu ou les concernant Download PDF

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Publication number
EP0902711B1
EP0902711B1 EP97923159A EP97923159A EP0902711B1 EP 0902711 B1 EP0902711 B1 EP 0902711B1 EP 97923159 A EP97923159 A EP 97923159A EP 97923159 A EP97923159 A EP 97923159A EP 0902711 B1 EP0902711 B1 EP 0902711B1
Authority
EP
European Patent Office
Prior art keywords
barrier
smoke
plate
grill
apertures
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
EP97923159A
Other languages
German (de)
English (en)
Other versions
EP0902711A1 (fr
Inventor
Derek Alfred Ward
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.)
Environmental Seals Ltd
Original Assignee
Environmental Seals 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 Environmental Seals Ltd filed Critical Environmental Seals Ltd
Publication of EP0902711A1 publication Critical patent/EP0902711A1/fr
Application granted granted Critical
Publication of EP0902711B1 publication Critical patent/EP0902711B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A62C2/18—Sliding dampers

Definitions

  • This invention relates to a smoke and fire barrier for preventing the passage of smoke through an opening such as an opening in a wall or panel, or through ducting, e.g. ducting of the type used in ventilation or air-conditioning systems.
  • a smoke barrier is disclosed in our earlier published Application GB-A-2272836 which comprises an apertured plate movable vertically relative to a complementary apertured grill to open and close the air openings of the grill.
  • the plate is held by an electromagnet or solenoid in its open position and falls under gravity to its closed position when the electromagnet or solenoid is rendered inactive in the event of fire or smoke.
  • One disadvantage of this earlier barrier is the requirement to hold the vertically movable plate in its other unsupported position while the grill is open.
  • the present invention is an improvement to this smoke barrier.
  • GB-A-2213719 discloses a smoke and fire damper which comprises a vertically slidable plate loaded by springs into a position in which the plate shuts off the passage of air through the damper on operation of a thermal actuator and/or fusible link.
  • a disadvantage of this damper is the requirement to hold the plate in its unsupported position when the grill is open.
  • the invention provides a smoke and fire barrier for installation in or over an opening and operable selectively to prevent the passage therethrough of smoke
  • the smoke barrier comprising a stationary grill having apertures through which air can flow and sealing means operable to seal the apertures against the passage of smoke therethrough
  • the sealing means being in the form of a sliding plate positioned adjacent the grill and having apertures which register with the apertures of the grill when the smoke barrier is in an open configuration and lands between the apertures which register with the apertures of the grill when the smoke barrier is in closed configuration
  • the plate being movable horizontally relative to the grill automatically in response to the presence of smoke and/or heat between a first position in which the smoke barrier is in its open configuration and a second position in which the smoke barrier is in its closed configuration
  • the barrier being characterised in that the plate includes wheels which track within horizontally extending guideways of the grill or a frame thereof.
  • the sealing means is operable in response to the detection of smoke and/or heat by an associated detection means such as a smoke detector.
  • a solenoid can be provided which is de-energised in response to a signal from the detection means.
  • the solenoid plunger engages the sliding plate in the absence of smoke or fire, to hold the plate in its "open” position against the action of a spring, but which upon receipt of a signal from the detection means to de-energise the solenoid retracts to cause the plate to move to its sealing or "closed” position under the action of the spring.
  • a latch may be provided to hold the sliding plate against the action of the spring when the smoke barrier is in its open position. This latch may comprise an electromagnet.
  • the lands of the sliding plate can comprise or have disposed thereon one or more sealing elements for sealing the apertures in the stationary grill.
  • the sealing element(s) can take the form of brush seals or blade seals, for example blade seals formed from an elastomeric material such as neoprene.
  • the sealing element can comprise a portion (e.g. a strip) of an intumescent material.
  • the intumescent material can optionally be coated, treated or otherwise covered by a covering material or covering layer.
  • the intumescent material may have a smooth facing material laminated thereto.
  • the intumescent material can be bonded to the sliding plate, for example by means of an adhesive, or it can be held within a holder or other mounting means, for example a holder formed of plastics material.
  • An advantage of using an intumescent material as the sealing element is that in a fire situation, the intumescent agent expands to provide an even more secure seal against the passage of smoke through the grill.
  • wheels For plates which are intended to lie in a generally vertical plane, wheels need only be provided along the lowermost edge of the plate. For plates which are intended to lie in a generally horizontal plane, however wheels may be provided along each side edge of the plate.
  • signal includes the simple case wherein an applied voltage between the detection means and the latch is cut off.
  • the smoke barrier comprises an outer grill 1 having a plurality of rows of elongate slots 2 through which air can normally pass.
  • the elongate slots 2 are shown as being sealed by brush seals 3, the tips of which protrude slightly through the slots 2.
  • the grill is placed in or over an opening in a door, ceiling or wall and is fixed by means of suitable securing elements such as screws (not shown).
  • a sliding plate 4 Connected to the rear of grill 1 is a sliding plate 4 which is held in contact with the grill 1 by means of screws located in slots of the sliding plate 4.
  • the plate 4 is slidable to and fro in substantially horizontal directions with respect to grill 1 by virtue of the slots.
  • the sliding plate 4 is provided with elongate apertures 6 which allow the passage of air therethrough.
  • the grill has outstanding flanges 8.
  • the brush seals 3 conveniently are affixed to the sliding plate 4 by means of a suitable adhesive.
  • blade seals eg formed of a resilient elastomeric material such as neoprene can be used.
  • a solenoid 10 which operates from a 1 2v or 24v power supply (not shown) and whose plunger 11 is attached to or bears against the plate 4.
  • a coil spring 12 is connected at one end to the grill frame 9 and at its other end to the plate 4.
  • An electro magnet 14 is mounted on the grill and co-operates with a latch 15 on the plate. When energised, the solenoid plunger engages the plate to hold it in its open position against the action of the coil spring 12 with the assistance of the electro magnet 14.
  • the plate 7 has wheels 16 which run in guideways 17 of the grill frame 9 for ease of movement.
  • the plate illustrated is intended to be mounted in a vertical door or wall.
  • wheels may be provided along each side edge of the plate.
  • the sliding plate 4 In use, when the solenoid and electro magnet are energised the sliding plate 4 is held in its open position in which the slots 2 in the grill 1 are aligned with the apertures 6 in the sliding plate 4 to allow air to flow through the grill. If the solenoid is de-energised, for example in response to the detection of smoke by an associated smoke detector the solenoid plunger 11 moves out of engagement with the plate 4 to cause it to be propelled by the coil spring 12 to its closed position in which the brush seals 11 come into register with and seal the elongate slots 2 against smoke penetration.
  • a blade seal can be used, but in one preferred alternative embodiment, a strip of intumescent material is used as the sealing element in place of the brush seal.
  • the strip of intumescent material can be a plain uncoated strip of intumescent material or it can be provided with a generally smooth facing strip which can be, for example, laminated to the intumescent material.
  • the intumescent material can be bonded to the sliding plate 4 by means of an adhesive, or it can be held within a suitably shaped holder formed from, for example, a plastics material.
  • the solenoid and electro magnet are re-energised and the sliding plate 4 returns against the action of the spring into its open position.
  • a switch not shown, is advantageously provided which is actuated by the sliding plate as it is moved into the open position. The switch, when actuated, cuts off the power supply to the solenoid thereby leaving the electromagnet to hold the sliding plate in place against the restoring force of the coil spring.
  • the smoke barrier of the invention may optionally incorporate a fire barrier, including an intumescent block grill of the type described in our British Patent Application No. 9207659.5.
  • the intumescent mixture is encased in aluminium foil in order to prevent moisture penetration which could adversely affectthe intumescent properties of the grill.
  • the grill intumesces and rapidly swells to fill completely the width of the opening in or over which the smoke barrier device is located.
  • a double plate arrangement coated with or containing intumescent material can be employed.
  • the smoke barriers of the type illustrated can be used to cover ducting in inter alia fire walls, doors, glazed partitions, windows or ceilings, and can be provided with deep side, upper and lower walls to enable them to act as covers for ventilation fans.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Special Wing (AREA)
  • Insulated Conductors (AREA)
  • Ventilation (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Claims (13)

  1. Une barrière anti-fumée et anti-feu pour une installation dans ou au-dessus d'une ouverture et pouvant fonctionner sélectivement pour empêcher le passage au travers de celle-ci de la fumée, la barrière anti-fumée comprenant une grille stationnaire (1) comportant des ouvertures (2) au travers de laquelle de l'air peut passer et des moyens d'étanchéité servant à obturer les ouvertures contre le passage au travers de celles-ci de la fumée, le moyen d'étanchéité étant sous forme d'une plaque coulissante (4) positionnée adjacente à la grille (1) et comportant des ouvertures (6) qui sont alignées avec les ouvertures (2) de la grille lorsque la barrière anti-fumée est dans une configuration ouverte et des parties pleines entre les ouvertures qui sont alignées avec les ouvertures de la grille lorsque la barrière anti-fumée est dans une configuration fermée, la plaque étant mobile horizontalement par rapport à la grille automatiquement en réaction à la présence de fumée et/ou de chaleur entre une première position dans laquelle la barrière anti-fumée est dans sa configuration ouverte et une seconde position dans laquelle la barrière anti-fumée est dans sa configuration fermée, la barrière anti-fumée étant caractérisée en ce que la plaque (4) comprend des roues (16) qui suivent des rails de guidage(17) s'étendant horizontalement sur la grille ou un chassis (9) de celle-ci.
  2. Une barrière selon la revendication 1 dans laquelle la plaque (4) se déplace en réaction à la détection de la fumée et/ou la chaleur au moyen d'un dispositif de détection associé tel qu'un détecteur de fumée.
  3. Une barrière selon la revendication 2 dans laquelle un solénoïde (10) est prévu qui est désexcité en réaction à un signal provenant du dispositif de détection.
  4. Une barrière selon la revendication 3 dans laquelle le solénoïde (10) comprend un piston (11) qui vient contre la plaque (4) en l'absence de fumée ou de feu, pour maintenir la plaque dans sa position "ouverte" contre l'action d'un ressort (12), mais qui en réponse d'un signal provenant du dispositif de détection pour désexciter le solénoïde, celui-ci se retire de sorte que la plaque (4) se déplace vers sa position d'étanchéité ou "fermée" sous l'action du ressort (12).
  5. Une barrière selon l'une quelconque des revendications précédentes dans laquelle un loquet (15) est prévu pour maintenir la plaque (4) contre l'action d'un ressort (12) lorsque la barrière anti-fumée est dans sa position ouverte.
  6. Une barrière selon la revendication 5 dans laquelle le loquet (15) comprend un électro-aimant (14).
  7. Une barrière selon l'une quelconque des revendications précédentes dans laquelle les roues (16) sont prévues le long du bord le plus bas de la plaque (4).
  8. Une barrière selon l'une quelconque des revendications précédentes dans laquelle les roues (16) sont prévues le long de chaque bord de la plaque (4).
  9. Une barrière selon l'une quelconque des revendications précédentes dans laquelle les parties pleines de la plaque (4) comprennent ou comportent sur celle-ci un ou plusieurs éléments d'étanchéité (3) qui obturent les ouvertures dans la grille lorsque la barrière anti-fumée est dans une configuration fermée.
  10. Une barrière selon la revendication 9 dans laquelle l'élément ou les éléments d'étanchéité est ou sont choisi(s) parmi les moyens d'étanchéité à lames et les moyens d'étanchéité à balais.
  11. Une barrière selon la revendication 9 dans laquelle le ou chaque élément d'étanchéité comprend une partie en matière intumescente.
  12. Une barrière selon la revendication 11 dans laquelle la matière intumescente est pourvue d'une couche de recouvrement ou de finition.
  13. Une barrière selon la revendication 12 dans laquelle la couche de recouvrement ou de finition est une couche de finition lisse qui est enduite dans la matière intumescente.
EP97923159A 1996-05-10 1997-05-12 Ameliorations apportees a des barrieres antifumee et antifeu ou les concernant Expired - Lifetime EP0902711B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9609772.0A GB9609772D0 (en) 1996-05-10 1996-05-10 Improvements in and relating to smoke and fire barriers
GB9609772 1996-05-10
PCT/GB1997/001297 WO1997043011A1 (fr) 1996-05-10 1997-05-12 Ameliorations apportees a des barrieres antifumee et antifeu ou les concernant

Publications (2)

Publication Number Publication Date
EP0902711A1 EP0902711A1 (fr) 1999-03-24
EP0902711B1 true EP0902711B1 (fr) 2000-09-13

Family

ID=10793479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97923159A Expired - Lifetime EP0902711B1 (fr) 1996-05-10 1997-05-12 Ameliorations apportees a des barrieres antifumee et antifeu ou les concernant

Country Status (5)

Country Link
EP (1) EP0902711B1 (fr)
AT (1) ATE196258T1 (fr)
DE (1) DE69703104T2 (fr)
GB (1) GB9609772D0 (fr)
WO (1) WO1997043011A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7000668B2 (en) 2001-08-27 2006-02-21 Smoke Guard Corporation System and method for sealing openings in response to smoke, noxious fumes, or contaminated air using a roll-down barrier
US7299848B2 (en) 2005-04-12 2007-11-27 Smoke Guard, Inc. Closure member control systems, including door control systems for barrier housings, and associated methods
US7735539B2 (en) 2007-12-28 2010-06-15 Nohara Guard System Co. Ltd. Fire-resistant smoke-suppressant device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2154841A1 (de) * 1971-11-01 1973-05-10 Delbag Luftfilter Gmbh Ls feuerschutz dienende, thermisch betaetigbare absperrvorrichtung fuer die kanaele von lueftungs- und klimaanlagen
GB2159051B (en) * 1981-07-23 1986-10-01 Dixon International Ltd Panel device for a ventilation opening
GB2107182B (en) * 1981-07-23 1985-08-21 Dixon International Ltd Panel device for a ventilation opening
GB8800659D0 (en) * 1988-01-13 1988-02-10 Actionair Equip Sliding plate fire & smoke damper
GB9107466D0 (en) * 1991-04-09 1991-05-22 Environmental Seals Ltd Improvements in and relating to intumescent fire seals and their method of manufacture
GB2272836B (en) * 1992-07-23 1996-09-11 Environmental Seals Ltd Improvements in or relating to smoke barriers
DE4326759C2 (de) * 1992-08-12 1997-02-27 Bartholomaeus Gmbh Brandschutzeinrichtung zur Abschottung eines Luftweges

Also Published As

Publication number Publication date
EP0902711A1 (fr) 1999-03-24
WO1997043011A1 (fr) 1997-11-20
DE69703104T2 (de) 2001-05-03
ATE196258T1 (de) 2000-09-15
GB9609772D0 (en) 1996-07-17
DE69703104D1 (de) 2000-10-19

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