EP2159341A2 - Windschutzschild für eine Feuergasentlüftungsöffnung - Google Patents

Windschutzschild für eine Feuergasentlüftungsöffnung Download PDF

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Publication number
EP2159341A2
EP2159341A2 EP09168651A EP09168651A EP2159341A2 EP 2159341 A2 EP2159341 A2 EP 2159341A2 EP 09168651 A EP09168651 A EP 09168651A EP 09168651 A EP09168651 A EP 09168651A EP 2159341 A2 EP2159341 A2 EP 2159341A2
Authority
EP
European Patent Office
Prior art keywords
frame
doors
windshield
essentially
attached
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Withdrawn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
EP09168651A
Other languages
English (en)
French (fr)
Other versions
EP2159341A3 (de
Inventor
Lars Axelsson
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.)
BMI Sverige AB
Original Assignee
Icopal AB
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 Icopal AB filed Critical Icopal AB
Publication of EP2159341A2 publication Critical patent/EP2159341A2/de
Publication of EP2159341A3 publication Critical patent/EP2159341A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges
    • 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
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
    • E04D13/0351—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis
    • E04D13/0354—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis the parts being flat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F24F11/34—Responding to malfunctions or emergencies to fire, excessive heat or smoke by opening air passages

Definitions

  • the present invention refers to a device to increase the discharge of smoke through a fire gas vent, which is arranged through the roof of a building, comprising an essentially rectangular frame with two at the frame pivoting doors, which doors at smoke emission in the building can be brought from an essentially horizontal closed position to an essentially vertically open position, by means of at least one opening device, wherein the doors in open position form side walls, which extend along the long sides of the rectangular frame, and at least one at the short sides of the frame arranged upright foldable windshield, wherein said windshield comprising at least one first triangular plate flexible attached to a second plate, which plates in folded position abut towards each other and in upright unfolded position, together with the doors, forming an extension of the side walls of the frame.
  • the fire gas vent consists of an essentially rectangular frame, which is intended to extend through the roof, and one or several doors, which is intended to automatically open at a possible fire, to uncover an opening through the frame to ventilate out smoke within the building.
  • the amount of smoke, which can be ventilated is dependant of the size of the opening and the wind conditions existing around the opening.
  • border result in considerable increased cost, in that the border must be insulated and made of material, which resists high temperature, and in addition such border reduces a possible light inlet through the fire gas vent.
  • a further disadvantage is that a higher border has negative influence to the exterior of the building.
  • Another method to reduce the effect of said wind conditions is to shield the area around the opening.
  • Such fire ventilator is previously known through DE 2 543 979 and disclose an openable door with windshields arranged at two sides of the door, which folds up at opening of the door.
  • the fire gas vent shown has an opening angle which is less than 90°, wherein the opening becomes essentially vertical and at unfavourable conditions the opening may become orientated in the direction of the wind, which essentially worsens the flow through the opening.
  • the purpose with the present invention is therefore to provide a device which increases the effective area of the fire gas vent to increase the outflow of smoke compared with known technique.
  • the device of the introductory described kind being characterised in that at least one windshield is pivotable attached at the frame and at respectively door, wherein said windshield folds up at opening of the doors and in upright unfolded position extends to a height which essentially corresponds to the height of the doors along essentially the entire short sides of the frame.
  • the device consists of a triangular first plate, which is foldable attached to a second plate and to one of the doors.
  • said windshield may consists of two essentially uniform triangular first plates, which are foldable attached to a second plate, which being formed of a common part of sheet metal, and to the respectively door.
  • each said windshield can consists of two essentially uniform triangular plates, which are foldable attached to each other and in unfolded position forms a square.
  • a fire gas vent 1 being shown, which is intended to be arranged through a roof (not shown) of a building (not shown), comprising an essentially rectangular frame 2, which extends through the roof and forms an opening 3 for ventilation of smoke.
  • Two pivoting doors 4 and 5 are arranged at the frame 2.
  • the doors 4 and 5 are fastened with hinges or similar and provided with at least one opening device 6, which at smoke emission in the building can bring the doors 4 and 5 from an essentially horizontal closed position to an essentially vertically open position.
  • the opening means 6 can consist of a gas spring of known kind or other known devices for opening of the doors 4 and 5.
  • the doors 4 and 5 form side walls 7 and 8, which extend along the long sides 9 and 10 of the rectangular frame 2.
  • the present device comprising at the short sides 11 and 12 of the frame 2 arranged upright foldable windshields 13 and 14.
  • the upright foldable windshields 13 and 14 comprising at least a first triangular plate 15 attached flexible to a second plate 16, in which said first and second plates in unfolded position forms said windshield and in retracted position abut towards each other.
  • said windshield may consist of only one triangular first plate 15, which is foldable attached to a second plate, which extends along the entire short side 11 and 12, respectively, and to one of the doors 4 or 5.
  • said windshield may consist of two essentially uniform triangular first plates 15, which are foldable attached to a second plate, which being formed of a common part of sheet metal, and to the doors 4 and 5, respectively.
  • each of said windshields may consist of two essentially uniform triangular plates 15 and 16, which are foldable attached to each other. The second plate is foldable attached at the short side 11 or 12, respectively, by means of a hinge or similar.
  • each windshield 13 and 14 consists of two essentially uniform triangular plates 15 and 16, which are foldable attached to each other, e.g. by means of one or several hinges, wherein the plates in unfolded position forms a square and in retracted position abut towards each other.
  • adjacent second triangular plates 16 of the windshield at respectively short side 11 or 12 could be formed of a common part of sheet metal, such that only one windshield extends along the short sides 11 and 12, respectively, but to facilitate assembly and stock-keeping preferably two windshields 13 and 14 are arranged at each short side 11 and 12 of the frame 2 and being pivotable attached, e.g.
  • the doors and the windshields form an extension of the side walls 9 and 10, and, 11 and 12, respectively, of the frame 2 in upright unfolded position and a pressure difference being hereby established over the fire gas vent, owing to a certain chimney effect, in which an increased height of the side walls give an increased flow through the opening 6 and an increased effective area of the fire gas vent compared with a fire gas vent without end walls.
  • FIG 2 an alternately device is shown for increasing the discharge of smoke through the fire gas vent 1, comprising a cone-shaped sheet metal 20 with an upper fastening plate (not shown), which is intended to be attached to the frame 2 at the inside of the building.
  • the doors and also the windshields are made of steel plates, but also other material is possible, e.g. when the doors should be transparent to light plastic or glass material may be used.
  • the side walls extend 0.6 m and the end walls 0.5 m over the frame 2 in upright unfolded position.
  • the doors and the windshields forming an extension of the side walls of the frame 2 from 0.25 m to at least 0.75 m.
  • the aerodynamic coefficient at blowing 90° i.e. perpendicular towards one of the short sides 11 or 12, increased from 0,459 to 0,470 with use of an inner cone-shaped plate and from 0,459 to 1,00 at use of the above described windshields 13 and 14.
  • the effective area defined as real area multiplied by the aerodynamic coefficient, has increased from 1.32 m 2 to 1.35 m 2 at use of the inner cone-shaped plate and from 1.32 m 2 to 2.88 m 2 at use of the windshields 13 and 14.
  • the effective area become 2.48 m 2 at blowing 60° with the windshields 13 and 14 and 2.53 m 2 with the windshields 13 and 14 and the inner cone-shaped plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)
EP09168651A 2008-08-29 2009-08-26 Windschutzschild für eine Feuergasentlüftungsöffnung Withdrawn EP2159341A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0801872A SE533086C2 (sv) 2008-08-29 2008-08-29 Anordning för att öka utströmningen av rök genom en brandventilator

Publications (2)

Publication Number Publication Date
EP2159341A2 true EP2159341A2 (de) 2010-03-03
EP2159341A3 EP2159341A3 (de) 2011-01-26

Family

ID=41359245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09168651A Withdrawn EP2159341A3 (de) 2008-08-29 2009-08-26 Windschutzschild für eine Feuergasentlüftungsöffnung

Country Status (2)

Country Link
EP (1) EP2159341A3 (de)
SE (1) SE533086C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115235021A (zh) * 2022-06-22 2022-10-25 衍菓（厦门）科技有限公司 一种基于智能监控的室内消防排烟系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543979A1 (de) 1975-10-02 1977-04-07 Grescha Ges Grefe & Scharf Be- und entlueftungsvorrichtung fuer gebaeuderaeume

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2348214A1 (de) * 1973-09-25 1975-04-10 Esser Kg Klaus Vorrichtung zum be- und entlueften von sowie zum abzug von rauch und waerme aus raeumen
DE9318538U1 (de) * 1993-12-03 1994-01-27 E.M.B. Metallbau und Brandschutztechnik GmbH, 46446 Emmerich Lüftungsvorrichtung für Gebäudedächer
DE9400145U1 (de) * 1994-01-07 1994-02-24 E.M.B. Metallbau und Brandschutztechnik GmbH, 46446 Emmerich Lüftungsvorrichtung für Dachöffnungen
FR2841921B1 (fr) * 2002-07-04 2005-01-14 Hexadome Sa Exutoire de desenfumage comportant des volets pare-vent escamotables

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543979A1 (de) 1975-10-02 1977-04-07 Grescha Ges Grefe & Scharf Be- und entlueftungsvorrichtung fuer gebaeuderaeume

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115235021A (zh) * 2022-06-22 2022-10-25 衍菓（厦门）科技有限公司 一种基于智能监控的室内消防排烟系统
CN115235021B (zh) * 2022-06-22 2023-08-18 衍菓（厦门）科技有限公司 一种基于智能监控的室内消防排烟系统

Also Published As

Publication number Publication date
SE533086C2 (sv) 2010-06-22
EP2159341A3 (de) 2011-01-26

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