US3720153A - Automatic fire-spread preventer valve for ventilation ducts - Google Patents

Automatic fire-spread preventer valve for ventilation ducts Download PDF

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Publication number
US3720153A
US3720153A US00123783A US3720153DA US3720153A US 3720153 A US3720153 A US 3720153A US 00123783 A US00123783 A US 00123783A US 3720153D A US3720153D A US 3720153DA US 3720153 A US3720153 A US 3720153A
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US
United States
Prior art keywords
shutter
housing
duct
seat
safety device
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
US00123783A
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English (en)
Inventor
P Jardinier
J Simonnot
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.)
SERVA SOC
SOC D ETUDES ET DE RECHERCHES DE VENTILATION ET D AERAULIQUE FR
Original Assignee
SERVA SOC
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 SERVA SOC filed Critical SERVA SOC
Application granted granted Critical
Publication of US3720153A publication Critical patent/US3720153A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F24F13/1426—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 actuating means
    • F24F2013/144—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 actuating means with thermoactuators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1797—Heat destructible or fusible
    • Y10T137/1819—Safety cut-off

Definitions

  • ABSTRACT A valve device which is intended for preventing the propagation of fire in ventilation ducts or the like. it comprises a valve adapted, in case of abnormal or sufficient temperature increment, to automatically close the duct in which it is mounted.
  • the present invention relates to a valve device adapted, in case of sufficient temperature increment, to automatically close a ventilation duct in order to prevent the propagation or spreading of fire therethrough.
  • valve devices of this character comprise shutter means retained by a fusible element in a position permitting the passage of air through the ventilation ducts equipped therewith.
  • these shutters are caused to close the passages in these ducts either by gravity or by the action of suitable springs.
  • These devices utilize a movement of translation or a movement of rotation about a fulcrum of said shutters for producing the desired closing action so that they require compulsorily the use of auxiliary means capable of producing the closing movement of the shutters if their operation is to be independent of gravity.
  • the device comprises at least one shutter associated with a seat which, within a range of temperatures having an upper limit, or threshold, is retained by at least one fusible element in a position permitting the passage of an air stream between the shutter and the seat, said shutter, outside said temperature range, being released and caused to engage said seat so as to closethe air passage.
  • the shutter is cut from a flexible sheet or plate of heat-resistant material and the fusible element retains this shutter in a state of deformation to provide an air passage between the shutter and the seat through a predetermined temperature range; outside this temperature range, the shutter is released and expands soas to automatically engage the aforesaid seat and thus closes completely the initial air passage.
  • FIG. 1 is a longitudinal section showing a first embodiment of the invention
  • FIG. 2 is another longitudinal section showing a second embodiment of the invention
  • FIG. 3 is a similar longitudinal section showing a third embodiment comprising a pair of shutters.
  • FIG. 4 illustrates another embodiment.
  • the device illustrated therein comprises a housing 1 of sheet steel, interconnecting two duct sections and having mounted therein in a transverse position a shutter 2 cut from flat spring steel sheet and adapted to be deformed symmetrically in relation to two fastening points 3 of the shutter 2 to said housing 1.
  • a seat 4 rigid with the housing 1 is associated with the shutter 2.
  • a steel wire 5 having its ends provided with a pair of fusible elements 6 in the form of balls or the like retains the shutter 2 in a state of symmetrical elastic deformation or prestress in relation to the two fastening points
  • the pair of fusible elements 6 retain the shutter 2 against its natural expansion, as shown in thick lines in FIG. 1, so that air can flow freely through the housing 1 as shown by the arrows 7, i.e. between the walls of said housing and the shutter 2.
  • the resistance of fusible elements 6 decreases and eventually cannot prevent the shutter 2 from expanding thus, the shutter assumes the position shown in dash and dot lines in FIG. 1, so as to engage the seat 4 and close completely the air passage 7.
  • the shape and disposal of the seat 4 are such that the shutter 2 can close the air passage 7 without having to expand fully as in the case illustrated in FIG. 1; under these conditions, the sealing action is more efficient, and the shutter 2 can counteract a possible pressure differential develop ing on either side of the shutter moreover, the shape of seat 4 permits of compensating the effect likely to be produced by a moderate residual deformation of the spring steel which, being prestressed during a relatively long period, might be prevented thereby from resuming a strictly flat configuration when allowed to expand.
  • the modified device illustrated in FIG. 3 comprises a pair of identical shutters 2a, 2b of spring steel, associated with a corresponding pair of seats 4a, 4b respectively disposed within the same housing '1 interconnecting two aligned duct sections.
  • the balls 6 retain the shutters 2a and 2b under the same stress and deformation, in the position shown in thick lines, so that these shutters constitute a substantially streamlined oval obstacle in the fluid flow, as seen in longitudinal section, thus minimizing the drag produced therein, i.e. from one duct section to the other.
  • the shutters expand and engage their seats 4a, 4b respectively, thus preventing the passage of air from one duct section to the other; the expanded shutters 2a, 2b (shown in dash and dot lines will then form with the walls of housing 1, a fluid-tight chamber 8 constituting an efficient heat insulation between the two duct sections interconnected by said housing 1.
  • the seats may be either of the type shown in FIG. 1 or of the type shown in FIG. 2.
  • the shutter 2 is secured along one edge to a fastening point 3 on the inner wall of housing 1, which consists of a frame-like seat 4; the shutter 2, being retained laterally against the inner wall of housing 1, as shown, may be of the twin type as shown in dash and dot lines in the lefthand portion of the figure.
  • the device according to this invention is adapted to be used notably in case it is desired to prevent a ventilation or air-conditioning duct connected to several different rooms from allowing a fire to spread from one room to another.
  • a thermal safety device adapted, in case of abnormal and sufficient increment in the temperature in a ventilation or air-conditioning duct, to automatically close said duct and thus prevent the propagation of tire therealong, which comprises a housing adapted to be inserted between two duct sections, a shutter of resilient flexible flat spring-steel material mounted in said housing and, having a free edge portion, said shutter being adapted to flex between an open position allowing flow through said housing and a closed position preventing flow through said housing, a seat in said housing and adapted to be engaged in face-to-face relation by the free edge portion of said shutterwith the latter in closed position, a wire extending through said shutter, and a fusible element on said wire in a position adapted to retain said shutter in its open position by prestressing and bending said shutter whereby, in case of abnormal and sufficient temperature increment in said duct, said fusible element will melt and release said shutter and said edge portion will move into engagement with said seat.
  • Safety device as set forth in claim 1, comprising a second fusible element and means holding said shutter on said housing by two fastening points wherein said shutter in closed position extends transversely in said housing, said shutter being retained in its open position by said fusible elements symmetrically in relation to a plane containing said two fastening points.
  • Safety device as set forth in claim 1, wherein said seat is so disposed in said housing that said shutter edges can engage said seat before expanding completely.
  • said fusible elements consist of a pair of balls of a material adapted to melt at said predetermined temperature and each secured to one end of said steel wire.
  • Safety device as set forth in claim 2, wherein said shutter comprises two elements secured to said housing at opposite ends thereof and adapted, in their closed position, to constitute a relatively streamlined oval obstacle in the housing, said shutters being adapted, in their expanded condition, to form a fluid-tight chamber with the walls of said housing.
  • Safety device as set forth in claim 6, wherein said seat comprises a frame-like member secured internally to said housing.

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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)
US00123783A 1970-03-13 1971-03-12 Automatic fire-spread preventer valve for ventilation ducts Expired - Lifetime US3720153A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7009001A FR2082387A5 (enrdf_load_stackoverflow) 1970-03-13 1970-03-13

Publications (1)

Publication Number Publication Date
US3720153A true US3720153A (en) 1973-03-13

Family

ID=9052202

Family Applications (1)

Application Number Title Priority Date Filing Date
US00123783A Expired - Lifetime US3720153A (en) 1970-03-13 1971-03-12 Automatic fire-spread preventer valve for ventilation ducts

Country Status (4)

Country Link
US (1) US3720153A (enrdf_load_stackoverflow)
DE (1) DE2110643C2 (enrdf_load_stackoverflow)
FR (1) FR2082387A5 (enrdf_load_stackoverflow)
GB (1) GB1307954A (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143670A (en) * 1976-12-13 1979-03-13 Fiber-Dyne, Inc. Ducting fire protection
US4143671A (en) * 1976-11-11 1979-03-13 Fiber-Dyne, Inc. Ducting fire protection
US4146048A (en) * 1977-05-02 1979-03-27 Prefco Productions, Inc. Fire damper and method of fabrication
US4263930A (en) * 1978-04-14 1981-04-28 Prefco Products, Inc. Diffuser concealable, volume control, heat-responsive, semi-automatic resetting, butterfly damper and operator
US4295486A (en) * 1978-04-27 1981-10-20 Prefco Products, Inc. Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator
US4366830A (en) * 1980-12-19 1983-01-04 Ruskin Manufacturing Company Damper assembly
US4531544A (en) * 1982-10-20 1985-07-30 Franz Jacobs Fire flap arrangement
USRE32362E (en) * 1977-05-02 1987-02-24 Prefco Products, Inc. Fire damper and method of fabrication
US4858517A (en) * 1988-06-08 1989-08-22 Rick Coker Fire damper kit
US5927312A (en) * 1998-02-27 1999-07-27 Dryden; Paul E. Method and apparatus for extinguishing combustion within combustible tubing
RU2183889C2 (ru) * 2000-07-05 2002-06-20 Гузеев Игорь Васильевич Полосковая щелевая антенная решетка
US20120329380A1 (en) * 2011-06-24 2012-12-27 Tai Chang-Hsien Ventilation System with Controllable Air Input and Output
US9089727B1 (en) 2014-01-17 2015-07-28 Gerald Grattan Flood Fire suppression system for air ducts
US9416615B2 (en) 2010-04-20 2016-08-16 Schlumberger Technology Corporation System and method for improving zonal isolation in a well
DE102009039265B4 (de) * 2009-08-28 2017-06-29 Gert Bartholomäus Abschlussvorrichtung für Überströmöffnungen mit rollbarem Verschlusselement
US10695598B2 (en) 2017-08-28 2020-06-30 Justrite Manufacturing Company, Llc Vented safety cabinet with thermally-actuated damper

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141160C2 (de) * 1981-10-16 1984-07-12 Jacobs, Franz, 4194 Bedburg-Hau "Feuer- und Rauchgassperre"
FR2611852B1 (fr) * 1987-03-03 1989-05-26 Aldes Atel Lyon Emboutissage Systeme de mise en place d'un element de forme tubulaire a l'interieur d'un conduit
DE9002778U1 (de) * 1990-03-09 1990-06-28 "Schako" Metallwarenfabrik Ferdinand Schad KG Zweigniederlassung Kolbingen, 7201 Kolbingen Brandschutzkasten
DE4431193A1 (de) * 1994-09-01 1998-10-01 Bartholomaeus Gmbh Brandschutzeinrichtung zur Abschottung eines möglichen Brandausbreitungsweges
DE19701275C2 (de) * 1997-01-16 1999-01-14 Schako Metallwarenfabrik Brandschutzklappe
DE29819164U1 (de) 1998-10-27 1999-01-28 Meltem Lüftungsgeräte GmbH & Co. KG, 82239 Alling Absperrvorrichtung für eine Be- und Entlüftungsöffnung sowie Halteelement für eine Absperrvorrichtung
WO2006015422A1 (en) * 2004-08-09 2006-02-16 Paul Robertson Fire barriers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076469A (en) * 1961-03-29 1963-02-05 Titus Mfg Corp Fire safety damper units
US3495606A (en) * 1965-08-05 1970-02-17 Sterling Radiator Co Inc Damper valve for ventilating ducts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1249023B (de) * 1965-07-05 1967-08-31 Dynamit Nobel Aktiengesellschaft, Troisdorf (Bez Köln) Brandsperre an mauerdurchfuehrungen fuerrohre aus thermoplastischen kunststhoff
DE1559317A1 (de) * 1965-07-05 1969-09-25 Dynamit Nobel Ag Einrichtung zum selbsttaetigen Verschliessen von Decken- und Wanddurchbruechen bei Auftreten ueberhoehter Temperaturen
DE1995156U (de) * 1968-07-06 1968-10-24 Trox Gmbh Geb Feuerschutzklappe, insbesondere zum einbau in lueftungskanaele von schiffen.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076469A (en) * 1961-03-29 1963-02-05 Titus Mfg Corp Fire safety damper units
US3495606A (en) * 1965-08-05 1970-02-17 Sterling Radiator Co Inc Damper valve for ventilating ducts

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143671A (en) * 1976-11-11 1979-03-13 Fiber-Dyne, Inc. Ducting fire protection
US4143670A (en) * 1976-12-13 1979-03-13 Fiber-Dyne, Inc. Ducting fire protection
US4146048A (en) * 1977-05-02 1979-03-27 Prefco Productions, Inc. Fire damper and method of fabrication
US4474167A (en) * 1977-05-02 1984-10-02 Mccabe Francis J Latch for a butterfly damper
USRE32362E (en) * 1977-05-02 1987-02-24 Prefco Products, Inc. Fire damper and method of fabrication
US4263930A (en) * 1978-04-14 1981-04-28 Prefco Products, Inc. Diffuser concealable, volume control, heat-responsive, semi-automatic resetting, butterfly damper and operator
US4295486A (en) * 1978-04-27 1981-10-20 Prefco Products, Inc. Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator
US4366830A (en) * 1980-12-19 1983-01-04 Ruskin Manufacturing Company Damper assembly
US4531544A (en) * 1982-10-20 1985-07-30 Franz Jacobs Fire flap arrangement
US4858517A (en) * 1988-06-08 1989-08-22 Rick Coker Fire damper kit
US5927312A (en) * 1998-02-27 1999-07-27 Dryden; Paul E. Method and apparatus for extinguishing combustion within combustible tubing
WO1999043972A1 (en) * 1998-02-27 1999-09-02 Dryden Paul E Method and apparatus for extinguishing combustion within combustible tubing
RU2183889C2 (ru) * 2000-07-05 2002-06-20 Гузеев Игорь Васильевич Полосковая щелевая антенная решетка
DE102009039265B4 (de) * 2009-08-28 2017-06-29 Gert Bartholomäus Abschlussvorrichtung für Überströmöffnungen mit rollbarem Verschlusselement
US9416615B2 (en) 2010-04-20 2016-08-16 Schlumberger Technology Corporation System and method for improving zonal isolation in a well
US20120329380A1 (en) * 2011-06-24 2012-12-27 Tai Chang-Hsien Ventilation System with Controllable Air Input and Output
US9086222B2 (en) * 2011-06-24 2015-07-21 National Pingtung University Of Science And Technology Ventilation system with controllable air input and output
US9089727B1 (en) 2014-01-17 2015-07-28 Gerald Grattan Flood Fire suppression system for air ducts
US10695598B2 (en) 2017-08-28 2020-06-30 Justrite Manufacturing Company, Llc Vented safety cabinet with thermally-actuated damper
US11957942B2 (en) 2017-08-28 2024-04-16 Justrite Manufacturing Company, L.L.C. Vented safety cabinet with thermally-actuated damper

Also Published As

Publication number Publication date
GB1307954A (en) 1973-02-21
FR2082387A5 (enrdf_load_stackoverflow) 1971-12-10
DE2110643A1 (de) 1971-09-30
DE2110643C2 (de) 1983-01-27

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