EP2181733B1 - Fireproof damper with holes, created by the combination of two tubular elements, suiting the pins of the blade; and method for installing said fireproof damper - Google Patents

Fireproof damper with holes, created by the combination of two tubular elements, suiting the pins of the blade; and method for installing said fireproof damper Download PDF

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Publication number
EP2181733B1
EP2181733B1 EP09174397.1A EP09174397A EP2181733B1 EP 2181733 B1 EP2181733 B1 EP 2181733B1 EP 09174397 A EP09174397 A EP 09174397A EP 2181733 B1 EP2181733 B1 EP 2181733B1
Authority
EP
European Patent Office
Prior art keywords
tubular elements
fire damper
holes
barrier blade
fire
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.)
Not-in-force
Application number
EP09174397.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2181733A1 (en
Inventor
Mirco Perazzolo
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.)
MP3 SRL
Original Assignee
MP3 SRL
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 MP3 SRL filed Critical MP3 SRL
Publication of EP2181733A1 publication Critical patent/EP2181733A1/en
Application granted granted Critical
Publication of EP2181733B1 publication Critical patent/EP2181733B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • 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 fire damper particularly suited to be interposed between two ventilation ducts, in such a way as to stop the flow of fire, smoke and heat in case of fire.
  • the invention also concerns a canalization for ventilation systems consisting of ducts in which one or more of the above mentioned fire dampers of the invention is/are inserted.
  • fire dampers In order to avoid this drawback, special devices that in technical jargon are called “fire dampers” have been used for years now, said devices being interposed in specific points of the ventilation ducts and having the function to stop the propagation of fire, heat and smoke from the area where the fire developed to the rest of the building.
  • these devices are arranged along the ventilation ducts, fitting them inside the internal walls of the buildings, which in most cases are already certified as fire resistant.
  • the above mentioned ventilation ducts, and consequently the fire dampers associated with them, can feature a rectangular or circular profile, according to design and aesthetical requirements.
  • the fire dampers known up to now substantially comprise a barrier blade, inserted within a duct portion, in technical jargon called "case” and in most cases made of a metallic material, which makes up the body of the fire damper and has the same profile as the ventilation ducts in which said fire dampers are interposed.
  • the above mentioned barrier blade is provided with pin means, in such a way as to define a rotation axis of the barrier blade itself.
  • the body of the latter is provided with two opposing holes with diameter at least as long as the diameter of the pin, said holes being made with special drilling equipment, in such a way as to constrain the two ends of the same pin and to allow exclusively the rotation of the barrier blade around said axis defined by the pin.
  • the operator must insert the barrier blade inside the case, as already mentioned above, and must align the pin housing provided in the blade with the two holes defined in the body of the case.
  • the fire dampers commonly used are also provided with a driving unit associated with the barrier blade, in such a way as to control its movement.
  • the fire dampers are operated so that in a normal situation the barrier blade is positioned so that its main surface is parallel to the longitudinal axis of the case, thus allowing the air to flow through the latter without being hindered by any obstacles.
  • the driving unit operates the barrier blade, which rotates and assumes the closing position with its main surface arranged orthogonal to the longitudinal axis of the duct, thus preventing the propagation of fire and smoke in the rooms adjacent to that in which the fire developed.
  • a plurality of through holes close to one another is made all around the body of the fire damper, in such a way as to reduce the metal surface between the two ends of the body itself and thus reduce the transmission of heat between the two parts.
  • said gasket is interposed between two tubular elements that are joined together to form said case of the fire damper.
  • the holes in which the pin of the barrier blade is constrained are made at the level of one of the two tubular elements described above.
  • a first recognized drawback lies in that the need to make the holes for inserting the pin, as described above, does not allow the entire fire damper to be assembled easily and quickly.
  • a second type of fire damper of the known art is described in document EP 0 816 774 A , which concerns a fire damper comprising an outer frame and a barrier blade hinged onto it, wherein both said tubular elements are made of a refractory material.
  • Said frame is necessarily connected on both sides with two tubular elements, preferably made of a metallic material, which make up the case of the fire damper itself.
  • the housings provided in the frame, in which the blade pins are inserted are obtained by placing two separate half-frames side by side.
  • the object of the present invention is to manufacture a fire damper that overcomes the drawbacks described above.
  • a further object of the present invention is to manufacture a fire damper that is easier to disassemble than the fire dampers of the known art when it is necessary to intervene to carry out repairs or maintenance.
  • the object of the present invention is also to manufacture a fire damper that makes it possible to obtain a thermal break comparable to, if not better than that achieved with the fire dampers of the known art.
  • the invention also includes the canalization for ventilation systems in which one or more fire dampers of the invention are inserted, as well as the method for assembling said fire damper.
  • the structure of the fire damper of the invention makes it possible to save much time during assembly and consequently also to ensure considerable money savings.
  • the fire damper that is the subject of the invention is shown as a whole in Figures from 1 to 3, where it is indicated by 1.
  • said fire damper 1 comprises a duct 3 (called also "case” in technical jargon), in which two opposing holes 6 and 7 are defined, said holes being suited to receive the insertion of pin means 5 belonging to a barrier blade 2 inserted within the duct 3 in order to define a rotation axis of the barrier blade 2.
  • the pin means 5 comprise two pins 51 and 52 arranged on opposite sides of the barrier blade 2, each one of which has a first end 53 and 54 inserted at the level of a recess 4 present in said barrier blade 2 and a second end 55 and 56 inserted in the housing holes 6 and 7 as explained above.
  • the pin means 5 comprise a single rotation pin passing over the entire length of the barrier blade 2 and passing with its ends through the housing holes 6 and 7.
  • the duct 3 comprises two tubular elements 31 and 32, in each one of which it is possible to identify two opposing recesses 10, 11 and 12, 13 created at the level of the perimetral edges 14,15 and 16,17.
  • Said recesses 10, 11 and 12, 13 are suited to define said holes 6 and 7 when the tubular elements 31, 32 face each other, as shown in Figure 2 .
  • tubular elements 31, 32 are spaced from each other, and therefore not in contact, due to the interposition of spacer elements 22 between their perimetral edges 14, 15 and 16, 17, so as to obtain a thermal break effect between the two parts of the duct 3.
  • spacer elements 22 in the preferred embodiment described herein, as shown in Figure 2 , belong to the tubular elements 31, 32 and project from their perimetral edges 14,15 and 16, 17.
  • the same spacer elements 22 could be independent elements arranged between the perimetral edges 14, 15 and 16, 17 of the two tubular elements 31, 32.
  • each pair of opposing recesses 10, 11 and 12, 13 have the same shape and are symmetrical.
  • Both cavities 57 and 58 have a diameter that is at least as long as the diameter of the two housing holes 6 and 7, which in turn have a diameter that is shorter than the outer diameter of the pin means 5.
  • This solution makes it possible to limit the movement of the barrier blade 2 only to the rotation around the axis defined by the above mentioned pin means 5. Furthermore, this solution can be adopted only if the housing holes 6 and 7 are made at the level of the perimetral edges 14, 15 and 16, 17 of the two tubular elements 31 and 32.
  • the pin means 5 are not provided with said cavities 57 and 58 and in this case the diameter of the pin means 5 must be shorter than the diameter of the above mentioned holes 6 and 7, so that the pin means 5 can be inserted therein.
  • tubular elements 31 and 32 that make up the duct 3 of the fire damper 1 of the invention and the barrier blade 2 have quadrangular cross section.
  • each one of the two housing holes 6 and 7 is preferably but not necessarily made in a central position in each one of the two opposing walls 8 and 9, at the level of the intersection point C1 and C2 of two axes X1, Y1 and X2, Y2 orthogonal to each other, as shown in Figure 1 .
  • each one of the two housing holes 6 and 7 is decentered in relation to said central point C1 and C2 of each one of the opposing walls 8 and 9 and is arranged at the level of the perimetral edges 14, 15 and 16, 17.
  • This particular alternative construction form makes it possible to obtain a decentered rotation of the pin means 5, and consequently of the barrier blade 2, in relation to the width of the duct 3, and thus different from the rotation obtained in the main embodiment described above.
  • the two tubular elements 131 and 132 and the barrier blade 102 have circular cross section. Also in this case the pin means 105 are positioned at the level of two diametrically opposite points D1 and D2 on the surface of the duct 103.
  • Said communication is due to the presence of the slot between the two tubular elements 31, 32 defined by the interposition of said spacer elements 22 between the perimetral edges 14, 15 and 16, 17.
  • Said insulating gasket 18 is preferably but not necessarily made of a ceramic fibre material, in such a way as to further contribute to the thermal break effect already obtained thanks to the presence of the spacer elements 22 that prevent any contact between the two tubular elements 31, 32.
  • the insulating gasket 18 can be made of a different material without heat insulation properties.
  • the two coaxial tubular elements 31 and 32 have the same size and therefore are perfectly identical.
  • this characteristic advantageously makes it possible to optimize the manufacturing process of the tubular elements 31 and 32.
  • the fire damper 1 of the invention and in particular the duct 3 are made using two tubular elements with different dimensions, provided that they maintain the main feature of the invention, which lies in the presence of the two recesses at the level of the perimetral edges.
  • the fire damper 1 of the invention also comprises a driving unit 19, associated with the barrier blade 2, which allows it to rotate around the pin means 5.
  • the above mentioned driving unit 19 comprises a lever system 20, arranged inside one of the two tubular elements 31 and 32 mentioned above, which in turn is connected to a driving device 21 arranged outside the duct 3 and the wall in which part of the fire damper 1 is embedded.
  • This special feature advantageously makes it possible to intervene on the driving device 21 for service or replacement purposes, with no need to remove the fire damper 1 of the invention from the wall in which it is embedded.
  • the driving unit 19 is completely arranged inside the structure of the fire damper 1, which means renouncing the advantages described above.
  • the driving device 21 in the particular construction form described herein it comprises a spring system.
  • the driving device can be an electric motor, a magnet system or any other type of system, provided that it belongs to the known art.
  • the fire damper 1 of the invention has the purpose of being inserted in a canalization 201 for ventilation systems 200 made up of several ducts connected to one another, as can be observed in Figure 5 .
  • one or more of the above mentioned fire dampers 1 of the invention are interposed between an inlet mouth 203 and an outlet mouth 204 of a canalization, typically embedded inside wall elements M, also made with fire stop systems.
  • the particular structure of the fire damper 1 of the invention makes it also possible, as already explained, to use an assembly method 300 that is easier and quicker than those used for the assembly of the fire dampers of the known art, thus achieving the first object of the invention.
  • the method 300 for assembling the fire damper 1 of the invention includes a first step a, in which the operator positions a first tubular element 31 so that both recesses 10 and 12 on its perimetral edges 14 and 16 can be accessed from the outside.
  • the operator preferably but not necessarily positions said tubular element 31 so that the recesses 10 and 12 face upwards.
  • the operator then provides for connecting the pin means 5 to the barrier blade 2, so that the same pin means 5 project from the above mentioned blade 2, as indicated in step b, Figure 6 .
  • step b the operator provides for positioning the barrier blade 2, with the corresponding pin means 5, so that the same are inserted in and constrained to the recesses 10 and 12 present in the tubular element 31 previously positioned, thus completing step c of the method 300.
  • step d the second of the two tubular elements 32 is positioned beside the first tubular element 31, so that the coupling of each one of the two pairs of recesses 10, 11 and 12, 13 makes it possible to obtain the housing holes 6 and 7, which allow the pin means 5, and consequently the barrier blade 2, to rotate around their own axis.
  • the perimetral edges 14, 15 and 16, 17 of the two tubular elements 31 and 32 are not in contact owing to the interposition of the spacer elements 22, so as to obtain the desired thermal break.
  • step e all the perimetral edges of the two adjacent tubular elements 31 and 32 are sealed.
  • the insulating gasket 18 is inserted between them, in such a way as ensure insulation between the inside of the fire damper 1 and the outside.
  • steps of the assembly method 300 are preferably carried out in the factory where the fire dampers are manufactured, and successively the fire dampers are transported, completely assembled, to the place where they are going to be installed in the ventilation system.
  • fire dampers may also be assembled directly on site before being installed in the ventilation system.
  • the invention achieves the object to provide a fire damper whose assembly technique is simpler and quicker than that used for the fire dampers of the known art.
  • a further object achieved is to provide a fire damper that, when it is necessary to intervene to carry out repairs or maintenance operations, is easier to disassemble than the fire dampers of the known art.
  • the invention also achieves the object to manufacture a fire damper that makes it possible to obtain a thermal break comparable to, if not better than that achieved with the fire dampers of the known art.
  • the invention also achieves the object to manufacture a fire damper whose construction cost is much lower than that of the fire dampers of the known art.
  • fire damper that is the subject of the invention also allows the advantages described above to be achieved.
  • the canalization for ventilation systems comprising one or more fire dampers of the invention
  • the method for assembling said fire damper can be subjected to modifications that, although not illustrated or described herein, shall all be considered protected by the present patent, provided that they fall within the scope of the following claims.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Air-Flow Control Members (AREA)
  • Turning (AREA)
EP09174397.1A 2008-10-28 2009-10-28 Fireproof damper with holes, created by the combination of two tubular elements, suiting the pins of the blade; and method for installing said fireproof damper Not-in-force EP2181733B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVI2008A000250A IT1391497B1 (it) 2008-10-28 2008-10-28 Serranda tagliafuoco con alloggiamenti per il perno realizzato dall'unione di due elementi tubolari e metodo di montaggio della suddetta serranda tagliafuoco

Publications (2)

Publication Number Publication Date
EP2181733A1 EP2181733A1 (en) 2010-05-05
EP2181733B1 true EP2181733B1 (en) 2016-08-17

Family

ID=41037798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09174397.1A Not-in-force EP2181733B1 (en) 2008-10-28 2009-10-28 Fireproof damper with holes, created by the combination of two tubular elements, suiting the pins of the blade; and method for installing said fireproof damper

Country Status (2)

Country Link
EP (1) EP2181733B1 (it)
IT (1) IT1391497B1 (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI123082B (fi) * 2009-04-30 2012-10-31 Flaekt Woods Ab Ilmanvaihtokanavan säätöpelti
ITVI20120304A1 (it) * 2012-11-12 2014-05-13 Mp3 S R L Struttura di supporto per serranda tagliafuoco e serranda tagliafuoco comprendente tale struttura di supporto
FI125214B (fi) * 2014-05-21 2015-07-15 Fläkt Woods AB Järjestely palopellin läpän akseloimiseksi kääntyvästi palopeltiin
GB2534877B (en) * 2015-02-02 2020-12-23 Flamgard Engineering Ltd Fire damper assemblies
EP3366356B8 (de) * 2017-02-23 2021-09-01 Trox GmbH Klappe, insbesondere brandschutzklappe
CN113757848A (zh) * 2021-08-25 2021-12-07 中国核电工程有限公司 一种核电站通风系统及其防火方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2555029A1 (de) * 1975-12-06 1977-06-08 Schako Metallwarenfabrik Feuerschutzeinrichtung fuer luftkanaele

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2750200B1 (fr) * 1996-06-24 1998-08-07 Aldes Aeraulique Dispositif d'obturation d'un conduit de ventilation, notamment clapet coupe-feu ou volet de desenfumage
FR2753104B1 (fr) * 1996-09-11 1998-10-30 Aldes Aeraulique Systeme d'etancheite pour dispositif d'obturation d'un conduit de ventilation, notamment pour clapet coupe-feu ou trappe de desenfumage
FR2843032B1 (fr) * 2002-08-02 2005-01-21 Aldes Aeraulique Dispositif d'obturation d'un conduit de ventilation, notamment clapet coupe-feu ou volet de desenfumage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2555029A1 (de) * 1975-12-06 1977-06-08 Schako Metallwarenfabrik Feuerschutzeinrichtung fuer luftkanaele

Also Published As

Publication number Publication date
EP2181733A1 (en) 2010-05-05
IT1391497B1 (it) 2011-12-23
ITVI20080250A1 (it) 2010-04-29

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