EP2741022A1 - Smoke evacuation damper comprising a piece of intumescent material - Google Patents
Smoke evacuation damper comprising a piece of intumescent material Download PDFInfo
- Publication number
- EP2741022A1 EP2741022A1 EP12195500.9A EP12195500A EP2741022A1 EP 2741022 A1 EP2741022 A1 EP 2741022A1 EP 12195500 A EP12195500 A EP 12195500A EP 2741022 A1 EP2741022 A1 EP 2741022A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- smoke evacuation
- piece
- intumescent material
- valve
- smoke
- 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.)
- Pending
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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
- A62C2/12—Hinged dampers
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- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
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- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/1406—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by sealing means
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- 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
- F24F11/35—Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/30—Details or features not otherwise provided for comprising fireproof material
Definitions
- the present invention concerns a smoke evacuation damper comprising a housing defining a duct and a door assembly.
- Tactical ventilation can be described as performing specific venting and fire isolation actions in order to evacuate smoke and heat, to provide firefighters a clear view on the seat of fire, to pull fire away from trapped occupants, and to limit property damage.
- the smoke evacuation damper is installed in connection to an exhaust air duct and is default in closed position. Only in case of fire in the room where the damper is installed and where the evacuation of smoke and heat is desired, the damper is opened either manually by the fireman or remotely via a control system.
- smoke evacuation dampers on that floor or in the room(s) where the fire rages will open, while the smoke evacuation dampers on other floors will remain closed to prevent smoke spreading on these floors. For that reason, smoke evacuation dampers should withstand elevated temperatures of the smoke being evacuated through the exhaust shaft during extended periods and provide for a good smoke barrier during such extreme conditions.
- Smoke evacuation dampers comprising a housing defining a duct for the evacuation of smoke there through from an upstream end of said duct (room side) to a downstream end (exhaust shaft); a valve mounted in said duct and movable between a open position and a closed position; at least one piece of intumescent material provided in the smoke evacuation damper for sealing the valve in the housing when activated.
- a drawback of the known smoke evacuation dampers is that the sealing properties and especially the smoke barrier properties are only sufficient after activation of the intumescent material and do not prevent smoke from spreading through a building during early stages of a fire.
- a smoke evacuation damper comprising a housing defining a duct for the evacuation of smoke there through from an upstream end of said duct to a downstream end; a valve mounted in said duct and movable between a open position and a closed position; at least one piece of intumescent material provided in the smoke evacuation damper for sealing the valve in the housing when activated, characterized in the smoke evacuation damper further comprises a conductor made in a heat conductive material, said conductor contacting the piece of intumescent material and extending in a downstream direction from said piece of intumescent material, in or along the smoke evacuation damper.
- Applicant observed that by providing conductor made in a heat conductive material, said conductor contacting the piece of intumescent material and extending in a downstream direction from said piece of intumescent material, the piece of intumescent material is activated sooner than without such conductor, thereby allowing effectively sealing the smoke evacuation damper is early stages of a fire, thereby preventing smoke from travelling through the duct in an upstream direction.
- the damper further comprises a first sealing member provided in the duct such that valve abuts the first sealing member when in a closed position, whereby the piece of intumescent material is provided downstream of and adjacent said first sealing member such that in case of activation of the intumescent material, the first sealing member is pressed against the closed valve.
- the first sealing member and the piece of intumescent material are preferably spaced apart in a non-activated condition of the intumescent material.
- the conductor defines a cover plate covering the downstream oriented surface of the piece of intumescent material, even more preferably, the cover plate is profiled and covers both the downstream oriented surface and the side of the piece of intumescent material facing the center of the duct, such as to define a guide for guiding the expansion of the intumescent material upon activation.
- the piece of intumescent material preferably has dimensions allowing covering the entire downstream oriented surface of the first sealing member when expanded.
- the piece of intumescent material is provided between the inner circumference of the duct and the outer circumference of the valve, preferably on the valve.
- Said valve preferably comprises reinforced edge profiles provided at the circumference of fire resistant panel and wherein said reinforced edge profiles are made in a heat conductive material, the profiles extending from the piece of intumescent material to the downstream surface of the valve.
- FIG. 1 represents a smoke evacuation damper 1 according to the present invention.
- the smoke evacuation damper 1 comprises a housing 2 defining a duct 3 for the evacuation of smoke there through from an upstream end 4 of said duct to a downstream end 5; a valve 6 mounted in said duct and movable between a open position and a closed position; at least one piece of intumescent material 7, 8 provided in the smoke evacuation damper for sealing the valve 6 in the housing 2 when activated.
- the smoke evacuation damper 1 further comprises a conductor 9, 12 made in a heat conductive material, said conductor contacting the piece of intumescent material 7 and/or 8 and extending in a downstream direction from said piece of intumescent material.
- the housing is typically rectangular and comprises four shaped profiles of a material having good heat resistance properties such as galvanized steel or stainless steel, optionally coated with a fire resistant material such as calcium silicate.
- the valve is pivotally mounted in the housing and is manufactured in a fire resistant material such as calcium silicate.
- a fire resistant material such as calcium silicate.
- the valve comprises at least one panel of fire resistant material at its downstream oriented side and a panel in a material convenient for finishing, such as gypsum at its upstream oriented side.
- the valve comprises a reinforced edge profile 12 allowing protecting the edges at the circumference of the valve. This profile is preferably made in a heat conductive (at least 5 Wm -1 K -1 , preferably at least 10 Wm -1 K -1 , most preferably at least 15 Wm -1 K -1 or more) and heat resistant material (resistant to temperatures up to 800°C) such as galvanized steel, stainless steel or copper.
- the profile extends from the upstream oriented surface of the valve over the circumference of the valve towards the downstream oriented surface of the valve, whereby the surface of the valve covered by the profile at the downstream side is larger than the surface of the valve covered by the profile at the upstream side.
- the valve further comprises a strip of intumescent material 8 extending along the entire circumference of the valve 6.
- the strip 8 is in this case attached directly on the reinforced edge profile 12. It is clear that in a non-expanded (non-activated) condition of the strip 8 a small opening remains between the strip 8 and the housing in a closed position of the valve.
- Intumescent materials are materials that swell (expands) as a result of heat exposure, thus increasing in volume. More particular an intumescent material undergoes a chemical change when exposed to heat or flames, becoming viscous then forming expanding bubbles that harden into a dense, heat insulating multicellular char. Intumescent materials are well known in the field of smoke evacuation dampers and will not be discussed in further detail. Examples of intumescent materials can be found in US 4,273,879 .
- the smoke evacuation shutter further comprises a first sealing member 10 and a second sealing member 11 extending along a section of the inner circumference of the housing and positioned such that these sealing members 10, 11 abut the valve when in a closed position.
- the first sealing member 10 being positioned downstream of the valve, while the second sealing member 11 is positioned upstream the valve 6.
- Both sealing members 10 and 11 are so-called cold-seals that show good sealing properties at temperatures between -50 - 150°C such as EPDM rubbers.
- a piece of intumescent material 7 Downstream of the first sealing member 10 a piece of intumescent material 7 is provided that, at its downstream oriented side contacts conductor 9.
- the sealing member 10 and the piece of intumescent material 7 are spaced apart when the intumescent material 7 is in a non-expanded state, thereby allowing visual control and independent replacement of both parts.
- the conductor 9 in this case defines a cover plate 13 covering the downstream oriented side of the piece of intumescent material 7 and protecting it from direct contact with flames. It is especially preferred that the conductor 9 is profiled and covers both the downstream oriented surface and the side of the piece of intumescent material facing the center of the duct, such that the conductor 9 defines a guide for a directed expansion of the intumescent material in a direction of the valve. Even more preferably, the conductor 9 extends upto a point where in contacts the reinforced edge 12 at the downstream surface of valve 6.
- the piece of intumescent material 7 preferably has dimensions that allow, in an expanded state of the intumescent material 7, to cover the entire downstream oriented side of sealing member 10.
- the conductor 9 is preferably manufactured in a heat resistant and heat conductive (at least 5 Wm -1 K -1 , preferably at least 10 Wm -1 K -1 , most preferably at least 15 Wm- 1 K -1 or more) material such as galvanized steel, stainless steel or copper.
- a heat resistant and heat conductive material such as galvanized steel, stainless steel or copper.
- the smoke evacuation damper is closed in normal circumstances when no fire is detected in a building.
- the smoke evacuation dampers should prevent ambient warm (room temperature) air from flowing in a upstream to downstream direction through the damper. This goal is achieved by providing the above-mentioned sealing members 10 and 11 abutting the valve 6.
- the valve 6 is opened allowing smoke to be evacuated from the room. In this situation, an under pressure in the smoke exhaust shaft is created and maintained such that smoke from in the room is sucked out through the smoke evacuation damper.
- the smoke evacuation dampers on the floors where no fire is detected remain shut and function as a smoke and heat barrier.
- the smoke and evacuation dampers should be heat resistant and perfectly tight from early stages of a fire onwards.
- the conductor extends over the seal upto the reinforced edge 12 of the valve, the conductor will provide the additional benefit that it effectively protects the seal from immediate contact with fire or smoke, thereby preventing early failure of the seal. Additionally, by contacting the reinforcing edge made of heat conductive material, the heat conducted by the conductor 9 will accelerate the activation of the intumescent layer 8 between the door and the duct, such that the smoke barrier to be created by the smoke evacuation damper in a closed position can be achieved very early after hot smoke travelling through the exhaust shaft, thereby preventing early smoke spreading throughout buildings.
- Figure 3 shows an alternative embodiment of a smoke evacuation damper according to the present invention, wherein the conductor 9 comprises two profiles, one providing the contact plate 13 and guide and another providing a channel for fastening the first sealing member 10 therein.
- the piece of intumescent material 8 or the piece of intumescent material 7 can be present in a smoke evacuation damper according to the present invention. Preferably, however both are present.
Abstract
Description
- The present invention concerns a smoke evacuation damper comprising a housing defining a duct and a door assembly.
- In modern fire fighting, the concept of tactical ventilation is commonly used. Tactical ventilation can be described as performing specific venting and fire isolation actions in order to evacuate smoke and heat, to provide firefighters a clear view on the seat of fire, to pull fire away from trapped occupants, and to limit property damage.
- Since in modern buildings, modern materials, especially the polymers, produce a lot more heat than traditional materials (wood, plaster, stone, bricks, etc.), tactical ventilation is even more crucial, such that smoke exhaust systems with dedicated smoke evacuation dampers have been developed and introduced in the buildings.
- Typically the smoke evacuation damper is installed in connection to an exhaust air duct and is default in closed position. Only in case of fire in the room where the damper is installed and where the evacuation of smoke and heat is desired, the damper is opened either manually by the fireman or remotely via a control system.
- In case of a fire on for example the first floor of a building, the smoke evacuation dampers on that floor or in the room(s) where the fire rages, will open, while the smoke evacuation dampers on other floors will remain closed to prevent smoke spreading on these floors. For that reason, smoke evacuation dampers should withstand elevated temperatures of the smoke being evacuated through the exhaust shaft during extended periods and provide for a good smoke barrier during such extreme conditions.
- Smoke evacuation dampers are known comprising a housing defining a duct for the evacuation of smoke there through from an upstream end of said duct (room side) to a downstream end (exhaust shaft); a valve mounted in said duct and movable between a open position and a closed position; at least one piece of intumescent material provided in the smoke evacuation damper for sealing the valve in the housing when activated.
- A drawback of the known smoke evacuation dampers is that the sealing properties and especially the smoke barrier properties are only sufficient after activation of the intumescent material and do not prevent smoke from spreading through a building during early stages of a fire.
- Therefor there remains a need for smoke evacuation dampers that solve the above-mentioned drawback.
- The present invention addresses the above-mentioned need by providing a smoke evacuation damper comprising a housing defining a duct for the evacuation of smoke there through from an upstream end of said duct to a downstream end; a valve mounted in said duct and movable between a open position and a closed position; at least one piece of intumescent material provided in the smoke evacuation damper for sealing the valve in the housing when activated, characterized in the smoke evacuation damper further comprises a conductor made in a heat conductive material, said conductor contacting the piece of intumescent material and extending in a downstream direction from said piece of intumescent material, in or along the smoke evacuation damper.
- Applicant observed that by providing conductor made in a heat conductive material, said conductor contacting the piece of intumescent material and extending in a downstream direction from said piece of intumescent material, the piece of intumescent material is activated sooner than without such conductor, thereby allowing effectively sealing the smoke evacuation damper is early stages of a fire, thereby preventing smoke from travelling through the duct in an upstream direction.
- Preventing spreading of smoke throughout a building, especially on floors were no fire is raging, effectively helps in maximizing evacuation efficiency and preventing damage.
- According to a preferred embodiment the damper further comprises a first sealing member provided in the duct such that valve abuts the first sealing member when in a closed position, whereby the piece of intumescent material is provided downstream of and adjacent said first sealing member such that in case of activation of the intumescent material, the first sealing member is pressed against the closed valve.
- The first sealing member and the piece of intumescent material are preferably spaced apart in a non-activated condition of the intumescent material.
- Preferably the conductor defines a cover plate covering the downstream oriented surface of the piece of intumescent material, even more preferably, the cover plate is profiled and covers both the downstream oriented surface and the side of the piece of intumescent material facing the center of the duct, such as to define a guide for guiding the expansion of the intumescent material upon activation.
- The piece of intumescent material preferably has dimensions allowing covering the entire downstream oriented surface of the first sealing member when expanded.
- According to a preferred embodiment the piece of intumescent material is provided between the inner circumference of the duct and the outer circumference of the valve, preferably on the valve.
- Said valve preferably comprises reinforced edge profiles provided at the circumference of fire resistant panel and wherein said reinforced edge profiles are made in a heat conductive material, the profiles extending from the piece of intumescent material to the downstream surface of the valve.
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Figure 1 schematically represents a cross section of a smoke evacuation damper according to the present invention; -
Figure 2 represents the same cross section asfigure 1 but after activation of the intumescent material of the smoke evacuation damper. -
Figure 3 schematically represents a detail of a cross section of an alternative embodiment offigure 1 . -
Figure 1 represents asmoke evacuation damper 1 according to the present invention. Thesmoke evacuation damper 1 comprises ahousing 2 defining aduct 3 for the evacuation of smoke there through from anupstream end 4 of said duct to adownstream end 5; avalve 6 mounted in said duct and movable between a open position and a closed position; at least one piece ofintumescent material valve 6 in thehousing 2 when activated. - According to the invention the
smoke evacuation damper 1 further comprises aconductor intumescent material 7 and/or 8 and extending in a downstream direction from said piece of intumescent material. - The housing is typically rectangular and comprises four shaped profiles of a material having good heat resistance properties such as galvanized steel or stainless steel, optionally coated with a fire resistant material such as calcium silicate.
- The valve is pivotally mounted in the housing and is manufactured in a fire resistant material such as calcium silicate. Preferably the valve comprises at least one panel of fire resistant material at its downstream oriented side and a panel in a material convenient for finishing, such as gypsum at its upstream oriented side. In the embodiment of
figure 1 , the valve comprises areinforced edge profile 12 allowing protecting the edges at the circumference of the valve. This profile is preferably made in a heat conductive (at least 5 Wm-1K-1, preferably at least 10 Wm-1K-1, most preferably at least 15 Wm-1K-1 or more) and heat resistant material (resistant to temperatures up to 800°C) such as galvanized steel, stainless steel or copper. - Preferably the profile extends from the upstream oriented surface of the valve over the circumference of the valve towards the downstream oriented surface of the valve, whereby the surface of the valve covered by the profile at the downstream side is larger than the surface of the valve covered by the profile at the upstream side.
- The valve further comprises a strip of
intumescent material 8 extending along the entire circumference of thevalve 6. Thestrip 8 is in this case attached directly on thereinforced edge profile 12. It is clear that in a non-expanded (non-activated) condition of the strip 8 a small opening remains between thestrip 8 and the housing in a closed position of the valve. - Intumescent materials are materials that swell (expands) as a result of heat exposure, thus increasing in volume. More particular an intumescent material undergoes a chemical change when exposed to heat or flames, becoming viscous then forming expanding bubbles that harden into a dense, heat insulating multicellular char. Intumescent materials are well known in the field of smoke evacuation dampers and will not be discussed in further detail. Examples of intumescent materials can be found in
US 4,273,879 . - In the embodiment represented in
figure 1 , the smoke evacuation shutter further comprises afirst sealing member 10 and asecond sealing member 11 extending along a section of the inner circumference of the housing and positioned such that these sealingmembers member 10 being positioned downstream of the valve, while the second sealingmember 11 is positioned upstream thevalve 6. Both sealingmembers - Downstream of the first sealing member 10 a piece of
intumescent material 7 is provided that, at its downstream orientedside contacts conductor 9. Preferably the sealingmember 10 and the piece ofintumescent material 7 are spaced apart when theintumescent material 7 is in a non-expanded state, thereby allowing visual control and independent replacement of both parts. - The
conductor 9 in this case defines acover plate 13 covering the downstream oriented side of the piece ofintumescent material 7 and protecting it from direct contact with flames. It is especially preferred that theconductor 9 is profiled and covers both the downstream oriented surface and the side of the piece of intumescent material facing the center of the duct, such that theconductor 9 defines a guide for a directed expansion of the intumescent material in a direction of the valve. Even more preferably, theconductor 9 extends upto a point where in contacts thereinforced edge 12 at the downstream surface ofvalve 6. The piece ofintumescent material 7 preferably has dimensions that allow, in an expanded state of theintumescent material 7, to cover the entire downstream oriented side of sealingmember 10. - The
conductor 9 is preferably manufactured in a heat resistant and heat conductive (at least 5 Wm-1K-1, preferably at least 10 Wm-1K-1, most preferably at least 15 Wm-1K-1 or more) material such as galvanized steel, stainless steel or copper. - As mentioned, the smoke evacuation damper is closed in normal circumstances when no fire is detected in a building. During normal circumstances, the smoke evacuation dampers should prevent ambient warm (room temperature) air from flowing in a upstream to downstream direction through the damper. This goal is achieved by providing the above-mentioned
sealing members valve 6. - In case a fire is detected in the room where the smoke evacuation damper is provided, the
valve 6 is opened allowing smoke to be evacuated from the room. In this situation, an under pressure in the smoke exhaust shaft is created and maintained such that smoke from in the room is sucked out through the smoke evacuation damper. - In order to prevent smoke and heat from one floor of a building to enter other floors through the smoke evacuation shaft, the smoke evacuation dampers on the floors where no fire is detected remain shut and function as a smoke and heat barrier. To effectively prevent smoke and heat to enter the other floors, the smoke and evacuation dampers should be heat resistant and perfectly tight from early stages of a fire onwards.
- In the case of heated smoke is exhausted through the exhaust shaft and the smoke evacuation damper is to function as a smoke and heat barrier towards an enclosed space, the heat in the exhaust shaft (downstream side of the smoke evacuation damper) will result in heat being conducted through
conductor 9 which will cause activation of thepiece 7 of intumescent material, which as such will firmly press the sealingmember 10 against the valve as represented infigure 2 , thereby increasing the sealing effect and preventing smoke from travelling across the seal and valve through the duct. With increasing heat, also the intumescent material between the circumference of the valve and the duct will be activated to entirely seal the smoke evacuation damper over an extended period. - In the preferred case the conductor extends over the seal upto the
reinforced edge 12 of the valve, the conductor will provide the additional benefit that it effectively protects the seal from immediate contact with fire or smoke, thereby preventing early failure of the seal. Additionally, by contacting the reinforcing edge made of heat conductive material, the heat conducted by theconductor 9 will accelerate the activation of theintumescent layer 8 between the door and the duct, such that the smoke barrier to be created by the smoke evacuation damper in a closed position can be achieved very early after hot smoke travelling through the exhaust shaft, thereby preventing early smoke spreading throughout buildings. -
Figure 3 shows an alternative embodiment of a smoke evacuation damper according to the present invention, wherein theconductor 9 comprises two profiles, one providing thecontact plate 13 and guide and another providing a channel for fastening the first sealingmember 10 therein. - It is clear that at least either the piece of
intumescent material 8 or the piece ofintumescent material 7 can be present in a smoke evacuation damper according to the present invention. Preferably, however both are present.
Claims (11)
- A smoke evacuation damper comprising a housing (2) defining a duct (3) for the evacuation of smoke there through from an upstream end (4) of said duct to a downstream end (5); a valve (6) mounted in said duct and movable between a open position and a closed position; at least one piece of intumescent material (7, 8) provided in the smoke evacuation damper (1) for sealing the valve (6) in the housing when activated, characterized in the smoke evacuation damper (1) further comprises a conductor (9, 12) made in a heat conductive material, said conductor (9, 12) contacting the piece of intumescent material (7, 8) and extending in a downstream direction (P1) from said piece of intumescent material, in or along the smoke evacuation damper (1).
- The smoke evacuation damper according to claim 1, wherein the damper further comprises a first sealing member (10) provided in the duct (3) such that valve (6) abuts the first sealing member (10) when in a closed position, whereby the piece of intumescent material (7) is provided downstream of and adjacent said first sealing member (10).
- The smoke evacuation damper according to claim 2, wherein the first sealing member (10) and the piece of intumescent material (7) are spaced apart in a non-activated condition of the intumescent material.
- The smoke evacuation damper according to any of the preceding claims, wherein the conductor (9) defines a cover plate (13) covering the downstream oriented surface of the piece of intumescent material (7).
- The smoke evacuation damper according to claim 5, wherein the cover plate (13) is profiled and covers both the downstream oriented surface and the side of the piece of intumescent material (7) facing the center of the duct, such as to define a guide for guiding the expansion of the intumescent material upon activation.
- The smoke evacuation damper according to any of claims 2 to 5, wherein the piece of intumescent material (7) has dimensions allowing covering the entire downstream oriented surface of the first sealing member (10) when expanded.
- The smoke evacuation damper according to claim 1, wherein the piece of intumescent material (8) is provided between the inner circumference of the duct (3) and the outer circumference of the valve (6).
- The smoke evacuation damper according to claim 7, wherein the piece of intumescent material (8) is provided on the valve.
- The smoke evacuation damper according to any of the preceding claims, wherein the valve (6) comprises at least one fire resistant panel or coating at is side facing downstream when in a closed position.
- The smoke evacuation damper according to claim 8 and 9, wherein said valve comprises a reinforced edge profile (12) provided at the circumference of fire resistant panel and wherein said reinforced edge profile (12) is made in a heat conductive material, the profile extending from the piece of intumescent material (8) to the downstream surface of the valve.
- The smoke evacuation damper according to any of the preceding claims, wherein the conductor (9, 12) is manufactured in a heat resistant material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP12195500.9A EP2741022A1 (en) | 2012-12-04 | 2012-12-04 | Smoke evacuation damper comprising a piece of intumescent material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP12195500.9A EP2741022A1 (en) | 2012-12-04 | 2012-12-04 | Smoke evacuation damper comprising a piece of intumescent material |
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EP2741022A1 true EP2741022A1 (en) | 2014-06-11 |
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Application Number | Title | Priority Date | Filing Date |
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EP12195500.9A Pending EP2741022A1 (en) | 2012-12-04 | 2012-12-04 | Smoke evacuation damper comprising a piece of intumescent material |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3028420A1 (en) * | 2014-11-17 | 2016-05-20 | Mv Ind | PRESSURE VENT FOR GAS AUTOMATIC EXTINGUISHING SYSTEM, FIRE-STOP DEVICE EQUIPPED WITH SUCH EVENT AND METHOD FOR IMPLEMENTING SAID DEVICE |
GB2534877A (en) * | 2015-02-02 | 2016-08-10 | Flamgard Eng Ltd | Fire damper assemblies |
BE1028359B1 (en) * | 2020-05-29 | 2022-01-10 | Rf Tech Nv | VENTILATION ELEMENT WITH ONE OR MORE COVERED WALL SURFACES |
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US4273879A (en) | 1978-03-31 | 1981-06-16 | Minnesota Mining And Manufacturing Company | Intumescent fire retardant composites |
DE8435118U1 (en) * | 1984-11-30 | 1985-03-07 | Gebrüder Trox, GmbH, 4133 Neukirchen-Vluyn | FIRE PROTECTION VALVE FOR VENTILATION PIPES |
EP0512414A2 (en) * | 1991-05-02 | 1992-11-11 | Schako Metallwarenfabrik Ferdinand Schad Kg | Fire protection damper |
DE19705950A1 (en) * | 1997-02-17 | 1998-09-10 | Schako Metallwarenfabrik | Fire barrier flap in air duct with rotary flap panel |
WO2007068786A1 (en) * | 2005-12-13 | 2007-06-21 | Fläkt Woods AB | Fire damper blade |
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2012
- 2012-12-04 EP EP12195500.9A patent/EP2741022A1/en active Pending
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FR2153480A1 (en) * | 1971-09-25 | 1973-05-04 | Trox Gmbh Geb | Fire break valves for ducts - combining use of pivoted gates and intumescent foams to seal the duct |
US4273879A (en) | 1978-03-31 | 1981-06-16 | Minnesota Mining And Manufacturing Company | Intumescent fire retardant composites |
DE8435118U1 (en) * | 1984-11-30 | 1985-03-07 | Gebrüder Trox, GmbH, 4133 Neukirchen-Vluyn | FIRE PROTECTION VALVE FOR VENTILATION PIPES |
EP0512414A2 (en) * | 1991-05-02 | 1992-11-11 | Schako Metallwarenfabrik Ferdinand Schad Kg | Fire protection damper |
DE19705950A1 (en) * | 1997-02-17 | 1998-09-10 | Schako Metallwarenfabrik | Fire barrier flap in air duct with rotary flap panel |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3028420A1 (en) * | 2014-11-17 | 2016-05-20 | Mv Ind | PRESSURE VENT FOR GAS AUTOMATIC EXTINGUISHING SYSTEM, FIRE-STOP DEVICE EQUIPPED WITH SUCH EVENT AND METHOD FOR IMPLEMENTING SAID DEVICE |
EP3025764A1 (en) * | 2014-11-17 | 2016-06-01 | MV Industrie | Overpressure vent for automatic gas extinguishing system, fire stop fitted with such a vent and method of using said device |
GB2534877A (en) * | 2015-02-02 | 2016-08-10 | Flamgard Eng Ltd | Fire damper assemblies |
GB2534877B (en) * | 2015-02-02 | 2020-12-23 | Flamgard Engineering Ltd | Fire damper assemblies |
BE1028359B1 (en) * | 2020-05-29 | 2022-01-10 | Rf Tech Nv | VENTILATION ELEMENT WITH ONE OR MORE COVERED WALL SURFACES |
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