EP0995064B1 - Protections ventilees pour accessoires electriques - Google Patents

Protections ventilees pour accessoires electriques Download PDF

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Publication number
EP0995064B1
EP0995064B1 EP98922921A EP98922921A EP0995064B1 EP 0995064 B1 EP0995064 B1 EP 0995064B1 EP 98922921 A EP98922921 A EP 98922921A EP 98922921 A EP98922921 A EP 98922921A EP 0995064 B1 EP0995064 B1 EP 0995064B1
Authority
EP
European Patent Office
Prior art keywords
hood
cover
lined
intumescent
coated
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
EP98922921A
Other languages
German (de)
English (en)
Other versions
EP0995064A1 (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.)
Euro Passive Fire Protection Ltd
Original Assignee
Euro Passive Fire Protection 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
Priority claimed from GB9714266A external-priority patent/GB2325728B/en
Application filed by Euro Passive Fire Protection Ltd filed Critical Euro Passive Fire Protection Ltd
Publication of EP0995064A1 publication Critical patent/EP0995064A1/fr
Application granted granted Critical
Publication of EP0995064B1 publication Critical patent/EP0995064B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/006—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation with means for hanging lighting fixtures or other appliances to the framework of the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/04—Recessed bases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling

Definitions

  • This invention relates to ventilated covers for electrical fittings and more especially, but not exclusively, to a ventilated cover for a recessed electrical fitting, such as a downlighter set in a ceiling space, which, in the event of a fire, isolates the fitting from the structure in which it is recessed to maintain the fire resistance thereof.
  • Light fittings recessed into ceilings are well known. Such light fittings are known as downlighters. The heat generated by such light fittings can be considerable and represents a fire hazard. Also the recess in which such a fitting is mounted can itself provide a path for fire and smoke to a room or area located above that ceiling.
  • Fire proofed ducts for electrical cabling are disclosed by US-PS-4276332 and GB-PS-2034535. These are not suitable for downlighter fittings.
  • British Patent Application 2297609A is directed to a ventilated cover for a downlighter.
  • This cover is fire and smoke resistant and is designed to be recessed into a supporting structure.
  • the cover comprises a fabric hood coated or impregnated with a liquid based intumescent material and includes a top supported by one or more upstanding side walls and a plurality of fabric pieces which extend inwardly from the lower margin of the or each side wall.
  • the top of the cover includes a layer of intumescent material which is formed with a plurality of apertures through at least one of which electrical wiring to the fitting can pass. Complementary apertures are formed in the top of the cover, and means are provided for connecting the inwardly extending material pieces to adjoining surfaces of the structure in which the electrical fitting is recessed.
  • This cover is especially useful when providing fire and smoke protection to an existing light fitting where access to the fitting is through the ceiling in which the fitting is positioned.
  • the present invention sets out to provide an alternative ventilated cover for an electrical fitting to which access from above is available, for example where flooring has yet to be laid.
  • Covers in accordance with this invention are relatively inexpensive and provide good protection in the event of a fire.
  • the invention provides a fire resistant cover for a ceiling mounted electrical light fitting coated with an intumescent material and including a top supported by one or more upstanding side walls, and a lower radially extending lip for connection to adjoining surfaces of a structure to which the electrical fitting is to be secured, the top of the hood being formed with one or more ventilation apertures through which electrical wiring can pass, the cover being characterised in that it comprises a metallic or ceramic hood coated or lined or partially coated or lined on one or more of its internal surfaces with a liquid based or solid intumescent material, the side(s) of the hood being formed with a plurality of upstanding slots to provide ventilation apertures for the hood.
  • the cover may be generally circular or square or rectangular in crosssection. Other cover shapes could however be employed.
  • the hood sides and/or top may be produced from a wire mesh.
  • the internal surface(s) of the side(s) may be lined with one or more pieces of wire mesh or perforated sheet, the exposed surface of the or each piece of mesh or sheet being coated with liquid based intumescent or lined with material impregnated with intumescent.
  • the intumescent may comprise graphite granules.
  • the cover illustrated in Figures 1 and 2 is produced from metal or a ceramic and comprises a hood, which is either coated internally with an intumescent paint or internally lined with one or more of fabric pieces 2 impregnated with an intumescent, e.g. graphite or carbon granules.
  • the hood 1 is generally circular in cross-section and comprises an upstanding side wall 3, a top 4 and an outwardly extending radial lip 5.
  • the intumescent coating or lining may be applied to the top 4 or the side wall 3, or both the top and the side wall.
  • a series of ventilation openings 6 are formed in the side walls and the top, one or more of these being large enough to enable cabling or a part of a light fitting to pass through.
  • the ventilation openings formed in the side wall 3 comprise a plurality of spaced upstanding slots and the openings formed in the top 4 comprise a plurality of spaced holes.
  • the number and shape of these openings may vary, their purpose essentially being to ventilate the hood interior and allow heat to flow outwardly from the hood.
  • the shape of the hood may vary. It may, for example, be of square, rectangular or other shape.
  • the height and diameter of the hood must be sufficient to contain the light fitting without causing overheating of the same, and the hood material provides a free standing, rigid construction. Hence the choice of metal (e.g. aluminium or steel) or ceramic.
  • the internal wall of the cover is lined with a wire mesh or a perforated metallic sheet 7.
  • the perforations of the mesh or sheet are typically 1 ⁇ 4" in diameter.
  • the mesh or sheet 7 is coated with a liquid intumescent or lined with fabric pieces of material impregnated with an intumescent material.
  • the mesh or sheet 7 lends rigidity to the hood while providing effective ventilation for the hood interior.
  • FIGS 4 and 5 Two types of fixings are shown in Figures 4 and 5.
  • strips cut from the side wall 3 are bent down to define clips 8 which locate over the margins of a hole formed in a ceiling to receive a light fitting.
  • the lip 5 of the hood is screwed to the adjoining structure.
  • a fire proof sealant may be used.
  • the heat generated by downlighters recessed into ceilings can represent fire hazards.
  • the intumescent coating or lining of the cover quickly expands to isolate the fitting entirely from the surrounding structure thereby confining the fire and any resulting smoke, and maintaining the fire resistance of the structure.
  • the downlighter cover illustrated in Figure 6 comprises a hood 1 which locates over and around a light fitting 10, the fitting 10 being spaced from the internal surfaces of the hood.
  • a hood 1 which locates over and around a light fitting 10, the fitting 10 being spaced from the internal surfaces of the hood.
  • only parts of the hood wall and top are lined or coated with an intumescent material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Building Environments (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Patch Boards (AREA)
  • Insulating Bodies (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Claims (4)

  1. Recouvrement ignifuge pour un luminaire monté au plafond enduit d'une matière intumescente et englobant une partie supérieure (4) supportée par une ou plusieurs parois latérales verticales (3), et une lèvre inférieure (5) s'étendant en direction radiale à des fins de liaison à des surfaces adjacentes d'une structure à laquelle doit être fixé le luminaire (10), la partie supérieure du capot étant formée par une ou plusieurs ouvertures de ventilation à travers lesquelles on peut faire passer le câble électrique, le recouvrement étant caractérisé en ce qu'il comprend un capot métallique ou céramique (1) enduit ou revêtu ou encore enduit ou revêtu partiellement sur une ou plusieurs de ses surfaces internes d'une matière intumescente solide ou à base liquide, le ou les côtés du capot étant munis de plusieurs fentes verticales pour obtenir des ouvertures de ventilation pour le capot.
  2. Recouvrement selon la revendication 1, dans lequel la ou les parois latérales (3) et/ou la partie supérieure (4) du capot sont réalisées à partir d'un grillage métallique.
  3. Recouvrement selon la revendication 1 ou 2, dans lequel la ou les surfaces internes du ou des côtés sont revêtues d'un ou de plusieurs morceaux d'un grillage métallique ou d'une feuille perforée, la surface exposée du morceau ou de chaque morceau du grillage ou de la feuille étant enduite d'une matière intumescente à base liquide ou revêtue d'une matière imprégnée avec une matière intumescente.
  4. Recouvrement selon l'une quelconque des revendications précédentes, dans lequel la matière intumescente comprend des granules de graphite.
EP98922921A 1997-07-08 1998-05-20 Protections ventilees pour accessoires electriques Expired - Lifetime EP0995064B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9714266A GB2325728B (en) 1997-05-29 1997-07-08 Fire resistant covers for electrical fittings
GB9714266 1997-07-08
PCT/GB1998/001458 WO1999002919A1 (fr) 1997-07-08 1998-05-20 Protections ventilees pour accessoires electriques

Publications (2)

Publication Number Publication Date
EP0995064A1 EP0995064A1 (fr) 2000-04-26
EP0995064B1 true EP0995064B1 (fr) 2002-03-27

Family

ID=10815462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98922921A Expired - Lifetime EP0995064B1 (fr) 1997-07-08 1998-05-20 Protections ventilees pour accessoires electriques

Country Status (5)

Country Link
EP (1) EP0995064B1 (fr)
AT (1) ATE215203T1 (fr)
AU (1) AU7538598A (fr)
DE (1) DE69804461D1 (fr)
WO (1) WO1999002919A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012155795A1 (fr) * 2011-05-19 2012-11-22 Wu Liangju Plafonnier ignifuge encastré

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0909919A3 (fr) * 1997-10-14 2000-03-22 Carboline Europe Limited Capuchon coupe-feu pour projecteurs encastrés
GB0130519D0 (en) * 2001-12-21 2002-02-06 Environmental Seals Ltd Covers for electrical fittings
DE10223904A1 (de) * 2002-05-29 2003-12-11 Kaiser Gmbh & Co Kg Unterdecke für Brandschutzzwecke
GB2403235B (en) * 2002-07-20 2005-06-08 Laurence Keith Kovacs A mounting arrangement
SE526426C2 (sv) * 2004-02-27 2005-09-13 Saint Gobain Ecophon Ab Byggelement för undertak, belysningsanordning för sådant undertak samt ett sådant undertak
AU2005201631B2 (en) * 2004-04-20 2006-07-06 Wolfgang Trumpelmann Down light cover to guard against dust, insulation and combustible material
GB2422191B (en) * 2005-01-27 2007-01-10 Rd Europe Ltd Fire-resistant lighting fitting
GB0510494D0 (en) * 2005-05-23 2005-06-29 Aurora Ltd Improvements to fire related downlights
GB2429052B (en) 2005-08-08 2010-09-22 Laurence Kovacs Lighting assemblies
GB0523777D0 (en) * 2005-11-23 2006-01-04 Environmental Seals Ltd Improved fixing mechanism for covers for electrical light fittings
GB2436673B (en) * 2006-03-27 2008-11-19 Magenta Group Internat Corp Fitting protector
GB2461935C (en) * 2008-11-12 2012-03-28 Collingwood Lighting Ltd Lighting unit.
GB201005925D0 (en) * 2010-04-09 2010-05-26 Aurora Ltd An adapter
GB2482318A (en) * 2010-07-29 2012-02-01 Jcc Lighting Products Ltd Intumescent covering for an electrical fitting
GB2486498A (en) * 2010-12-17 2012-06-20 Aurora Ltd Insulation distancing ventilation cover for a down light casing
GB201514377D0 (en) * 2015-08-13 2015-09-30 Ward Derek A And Katz Marc S Hole-saw
JP6760100B2 (ja) * 2017-01-20 2020-09-23 住友電装株式会社 通気部材及びハーネス
ES2942648T3 (es) * 2017-02-13 2023-06-05 Katz Marc Steven Sierra de perforación
CN107663918B (zh) * 2017-09-30 2019-05-21 山东万得福装饰工程有限公司 用于吊顶的集成设备带

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276332A (en) 1979-11-06 1981-06-30 Castle George K Fire proof cable tray enclosure
GB2234938B (en) * 1989-08-18 1992-12-09 Environmental Seals Ltd Improvements in and relating to intumescent fire barriers and their method of manufacture
GB2235710B (en) * 1989-09-05 1993-11-03 Environmental Seals Ltd Improvements in and relating to fire barriers
GB9209043D0 (en) * 1992-04-27 1992-06-10 B & K Southern Ltd Trunking
GB9220478D0 (en) * 1992-09-29 1992-11-11 Hamilton Arthur P Fire stop covering device for aperture in fire resistant structure
GB9501391D0 (en) 1995-01-25 1995-03-15 Environmental Seals Ltd Ventilated covers for electrical fittings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012155795A1 (fr) * 2011-05-19 2012-11-22 Wu Liangju Plafonnier ignifuge encastré
GB2505614A (en) * 2011-05-19 2014-03-05 Liangju Wu Embedded fire-retardant ceiling lamp

Also Published As

Publication number Publication date
AU7538598A (en) 1999-02-08
WO1999002919A1 (fr) 1999-01-21
DE69804461D1 (de) 2002-05-02
ATE215203T1 (de) 2002-04-15
EP0995064A1 (fr) 2000-04-26

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