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
• • 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
  • A62C2/14—Hinged dampers with two or more blades
• • 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
• • 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

Definitions

• the present invention relates to the field of fire-fighting, in particular in high-security buildings such as nuclear power plants, and more particularly to articulated fire dampers and relates to an articulated fire damper system with integrated sealing. . It also relates to a set composed of at least two such systems.
• the principle of the fire damper is known which consists in closing the latter when the temperature of the gas stream passing through it exceeds a determined value so as to isolate instantly the two spaces separated by said valve, that is to say to prevent any gaseous flow to pass or circulate between said spaces via the valve.
• an articulated fire damper comprises a cage or box in the form of a frame or tunnel, generally of rectangular, square or circular section, comprising, in its internal space forming a through passage of gas flow, a flap or a row of flaps each of shape, round, rectangular or square and pivotally mounted in said cage between an open position or open state of said passage and a closed position or closed state of said passage.
• This type of articulated fire damper is generally intended to be installed, in a vertical or substantially vertical orientation, either against an opening through a partition wall or wall, or by being sealed or fixed in the latter or in the opening of an air duct.
• Other valves of this type are intended to be installed in a horizontal or substantially horizontal orientation in a floor.
• One or more springs generally provide for the automatic closing of the hinged firestop valve being controlled by a control mechanism, generally of the thermal fuse type that melts beyond a certain temperature, which has the effect of releasing the one or more springs which then actuate the closing of the valve.
• a control mechanism generally of the thermal fuse type that melts beyond a certain temperature, which has the effect of releasing the one or more springs which then actuate the closing of the valve.
• Other known control or triggering mechanisms equip the current fire dampers or supplement said thermal fuses, such as electromagnets or servomotors.
• the reset of the fire damper is generally performed manually but may be automatic, especially when the articulated fire damper is motorized, for example by means of a servomotor.
• the cage and flaps are usually made of steel and covered with a refractory material such as calcium silicate which provides thermal insulation and maximum stability.
• current fire dampers are generally equipped with intumescent seals which are located on the periphery or the peripheral edge of the blades or shutters. These joints expand when the temperature rises, generally above 140 ° C, which has the effect of forming a sealing barrier with pressure between the flap and the inner face of the cage.
• the present invention aims to overcome these disadvantages by proposing an articulated fire damper system with integrated sealing, to obtain a high efficiency of sealing the system in the closed state by being able to meet current standards or the required criteria, including the most stringent criteria, including those governing safety regulations in high security buildings such as nuclear power plant buildings.
• the articulated fire stop valve system with integrated sealing which comprises a cage shaped square or rectangular frame comprising two opposite inner faces parallel to each other and two opposite inner faces perpendicular to these last, said cage having in its internal space, forming a passage capable of being traversed by a gas flow, a flap or, where appropriate, a row of a plurality of flaps, the or each flap, of square or rectangular shape on the one hand, being able to be pivotally mounted about a pivot axis connecting the first two internal faces, between a closed or closed position and an open position or open state of said passage, and, somewhere else, each having two large opposite faces connected by two first opposite and parallel sides to said pivot axis (s) and two second opposite sides perpendicular to said first sides and, where appropriate, parallel to the longitudinal axis of said row, is essentially characterized in that the cage further comprises two elongated first contact plates, preferably thin, each extending parallel to the said axis (s), on one second internal faces and
• It also relates to an assembly consisting of two articulated fire damper systems as defined each according to the present invention, characterized essentially in that the two systems are connected in series so as to form a juxtaposition of a first system and a second system with a single passage space of the gas flow common to said systems and in that both systems are each equipped with an independent control mechanism so that the first system can be controlled in normal operation and the second system forming a backup system can be controlled, in case of malfunction of the first system, to take the relay of the latter.
• FIG. 1 shows an exploded perspective view of a system according to the present invention, in a preferred embodiment and comprising a single closure flap
• FIG. 2 shows a front view of the system shown in FIG. 1, in the mounted state and in a pivoting position of the flap preceding the closed position
• FIG. 3a shows a sectional view along A-A of the system represented in FIG. 2;
• FIG. 3b shows the system as represented in FIG. 3a in a variant of the opening angles of the V-shaped sections integrating the first fixed plates
• FIG. 4 shows a sectional view along B-B of the system shown in FIG. 2, in the closed state of the shutter,
• FIG. 5 shows an exploded perspective view of a system according to the present invention, in a preferred embodiment and comprising a row of three shutters,
• FIG. 6 shows a front view of the system shown in FIG. 5, in the mounted state and in a pivoting position of the flaps preceding their closed position
• FIG. 7 shows a cross-sectional view along A-A of the system shown in FIG. 6;
• FIG. 8 shows a cross-sectional view along B-B of the system shown in FIG. 6, in the closed state of the shutters
• FIG. 9a shows a detail view in cross-section of a sealing junction between two successive flaps of the system shown in FIG. 6 in the closed state, in a first embodiment of the cooperation by contact between them two internal faces of the two adjacent second plates of said successive flaps making it possible to form said junction and in a first embodiment of the embodiment of holding and fixing said second plates on the corresponding flaps,
• FIG. 9b shows one of the first sides of one of the two shutters shown in FIG. 9a in a variant of the embodiment of holding and fixing the second plate on said shutter
• FIG. 10 shows a perspective view of an assembly made up of two systems shown in FIG. 6 and placed side by side or juxtaposed to one another, forming a single gas flow passage common to said systems,
• FIG. 11 shows a detail view in cross-section of a sealing junction between two successive components of the system. represented in FIG. 6 in the closed state, in a second embodiment of the cooperation by contact between them of the external faces of the two adjacent second plates of said successive flaps making it possible to form said junction.
• FIGS. 1 and 2 show a hinged firestop valve system with integrated sealing, according to the present invention, comprising a cage 1 in the form of a square or rectangular frame comprising two first internal faces the opposite parallel to each other and two second inner faces lb opposite perpendicular to the latter, said cage 1 having in its internal space, forming a passage capable of being traversed by a gas flow, a flap 2 (FIGS.
• a row of a plurality flap 2 ( Figures 5, 6, 7, 8, 9, 10), the or each shutter 2, of square or rectangular shape, on the one hand, being adapted to be pivotally mounted about a pivot axis 2a connecting the first two internal faces, between a closed or closed position and an open position or open state of said passage, and, on the other hand, having two large opposite faces connected by two opposite first sides 2b and parallel s to said pivot axis (s) 2a and two opposite second sides 2c perpendicular to said first sides and, where appropriate, parallel to the longitudinal axis of said row.
• the cage 1 further comprises two elongated, preferably thin, first elongated contact and sealing plates 3 each extending parallel to said axis on one of the seconds. internal faces lb.
• the or each flap 2 comprises two elongate, preferably thin, elongated contact and sealing plates 4a each extending along one of the first sides 2b.
• each first or second thin plate may have a thickness preferably between 0.2 mm and 0.5 mm.
• each second plate 4a of the shutter 2 is capable, in the closed state, of cooperating, by surface contact, with one of the first two plates 3a.
• each second plate 4a of each shutter 2 is capable, in the closed state, depending on the location of the shutter 2 concerned, to cooperate, by surface contact, with one of the two first plates 3a, or with the one of the second plates 4a of the adjacent flap 2.
• the system according to the present invention therefore has the effect, thanks to the first and second plates 3a and 4a and their cooperation by contact of their respective surfaces, preferably flat, in the closed state of the system, to ensure or guarantee a reinforced and durable sealing of the system.
• each first plate 3a which extends along the second internal face 1b concerned, may be laterally inclined relative to the latter so as to provide a first space between each first plate 3a and the second associated or corresponding inner face lb and each second plate 4a can be inclined laterally with respect to the first side 2b of the flap 2 along which it extends longitudinally so as to provide a second space between each second plate 4a and the first side 2b associated or corresponding ( Figure 9a and 9b).
• first two plates 3a can be mounted head to tail, or oriented in a direction of opposite inclination, relative to each other and, secondly, the two second plates 4a inclined or each flap 2 can be mounted head to tail, or oriented in a direction of inclination opposite to each other (in particular Figures 3a, 3b and 7).
• the first plates 3a and / or the second plates 4a may each consist of a plate or a thin metal blade.
• each plate or metal blade 3a or 4a may be flexible, flexible or semi-rigid.
• each first plate 3a of the cage 1 and each second plate 4a of the or each shutter 2 can be positioned and oriented (FIGS. 1, 2, 3 , 4, 5, 6, 7, 8, 9, 10) so that, in the closed state, each first plate 3a can be inserted into the second space provided by the second plate 4a in question and, conversely, that the latter can be inserted into the first space provided by the first plate 3a concerned, this with contact of the inner face of each first plate 3a with the inner face of the second plate 4a concerned.
• each second plate 4a of each flap 2 can be positioned and oriented so that, in the state closed, each second plate 4a can be inserted into the second space formed by the other adjacent second plate 4a and reciprocally, this bringing into contact with each other the internal faces of said adjacent second adjacent plates 4a (FIG. 9a).
• each first plate 3a of the cage 1 and each second plate 4a of the or each shutter 2 can be positioned and oriented so that, in the closed state the outer face of each first plate 3a can be brought into contact with the external face of the second plate 4a concerned.
• each second plate 4a of each flap 2 can be positioned and oriented so that, in the closed state, the outer face of each second plate 4a can be brought into contact with the external face of the adjacent second plate 4a (FIG. 11).
• each first plate 3a respectively each second plate 4a
• each second plate 4a relative to the corresponding second internal face 1b respectively relative to the surface of the corresponding first side 2b, maintaining the longitudinal axis of each first plate 3a, respectively of each second plate 4a, parallel or substantially parallel to the corresponding second internal face lb, respectively to the surface of the corresponding first side 2b.
• the system according to the present invention may comprise two first elongate and straight sections 3, each having a cross section or a V-shaped profile, one of the two wings or fixing wing 3b may be fixed on one of the seconds inner faces lb and the other wing can form one of the first two plates 3a.
• Each first section 3 in V can be opened with an acute (Figure 3a) or obtuse (Figure 3b) internal angle.
• the present invention may comprise at least two plates or panels 4 each extending to one of its sides by an inclined wing and each large face of the or each shutter 2 may be covered by one of said plates or panels 4 so that the inclined wing of the latter extends longitudinally along the one of the first sides 2b of the corresponding shutter 2 forming one of the second plates 4a (in particular FIGS. 1, 3a, 3b, 5, 9a, 10, 1 1).
• the system according to the present invention may comprise at least two second V-shaped sections 4 ', one of which wings 4b of each second V-shaped profile can form a support wing fixed longitudinally by its outer face on one of the first sides 2b of the component 2 concerned or, in a variant not shown, on one of the large faces of the latter, while the other wing of each second section 4 'V can form one of the second plates 4a ( Figure 9b).
• Each second section 4 'in V can be open, either with an acute internal angle so that the support wing can be fixed on one of the first sides 2b of the shutter 2 (FIG. 9b), or, in this variant, with an internal angle obtuse so that the support wing can be fixed on one of the large faces of the flap 2 concerned.
• the system according to the present invention may furthermore comprise two additional elongate and elongate contact and sealing faces 5a each fixed opposite one another. compared to each other by being reported and fixed on one of the first internal faces perpendicular to the second internal faces lb of the cage 1 so that each pivot axis 2a of the flap or 2 can pass through the contact and sealing faces 5a which comprise for this purpose holes 5c and that each second side 2c of the or each shutter 2 may be, in the closed state, in sealing contact with one of the contact and sealing faces 5a forming a contact excess on the first face internal correspondent.
• the system according to the present invention may comprise two additional profiles 5, preferably metal, elongated and straight and each having a cross section generally ⁇ , U or C comprising at least one side wing, preferably two wings 5b, allowing its attachment to one of the first two internal faces of the cage 1 and a central wing connected to the or said lateral wings 5b, the outer face of the central wing 5c of each additional section 5 forming the one of the two additional contact and sealing faces 5a (in particular, FIGS. 1, 5, 8 and 10).
• sealing, in the closed state, between the second sides 2c of the or each flap 2 may be made directly by surface contact between the outer face of each second side 2c and the first inner face of the concerned cage 1.
• the present invention also relates to an assembly consisting of two such articulated fire damper systems with integrated sealing according to the present invention ( Figure 10).
• the two systems are connected in series so as to form a juxtaposition of a first system and a second system with a single passage space of the gas flow common to said systems.
• the two systems are each equipped with an independent control mechanism, not shown, so that the first system can be controlled in normal operation and the second system, forming a backup system, can be controlled, in case malfunction of the first system, to take the relay of the latter.
• Such an assembly or a system according to the present invention may be provided to be installed, for example, applied against an opening through a partition separating two spaces or two rooms of a building, in particular, a high security building such as a nuclear power plant, or, for example, by being fixed or sealed in said opening or in the opening of an air duct, or else in a horizontal or substantially horizontal orientation, for example in a floor.

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• Health & Medical Sciences (AREA)
• Public Health (AREA)
• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

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• 2012
  • 2012-06-22 WO PCT/FR2012/051439 patent/WO2013190188A1/fr active Application Filing
  • 2012-06-22 EP EP12741033.0A patent/EP2864001A1/de not_active Withdrawn

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