EP0094192B1 - Appareil extincteur d'incendie - Google Patents

Appareil extincteur d'incendie Download PDF

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Publication number
EP0094192B1
EP0094192B1 EP83302499A EP83302499A EP0094192B1 EP 0094192 B1 EP0094192 B1 EP 0094192B1 EP 83302499 A EP83302499 A EP 83302499A EP 83302499 A EP83302499 A EP 83302499A EP 0094192 B1 EP0094192 B1 EP 0094192B1
Authority
EP
European Patent Office
Prior art keywords
tube
extinguishant
fire
pressure
specified temperature
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
Application number
EP83302499A
Other languages
German (de)
English (en)
Other versions
EP0094192A1 (fr
Inventor
Raymond Whitlock
Francis Richard Lockwood
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.)
Chubb Fire Ltd
Original Assignee
Chubb Fire Security Ltd
Chubb Fire Ltd
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 Chubb Fire Security Ltd, Chubb Fire Ltd filed Critical Chubb Fire Security Ltd
Publication of EP0094192A1 publication Critical patent/EP0094192A1/fr
Application granted granted Critical
Publication of EP0094192B1 publication Critical patent/EP0094192B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/10—Containers destroyed or opened by flames or heat

Definitions

  • This invention relates to fire extinguishing apparatus.
  • the invention aims to provide inexpensive automatic fire extinguishing apparatus suitable for the protection of a wide variety of risks, and is especially suited to the automatic extinguishment of fires in relatively confined spaces.
  • Apparatus according to the invention may therefore find particular application e.g. inside letter (mail) boxes; night deposit safes; storage cabinets for papers, microfilm or other data media; paint or solvent cabinets; office machines, photo booths or other electrical equipment.
  • the tube is flexible substantially throughout its length so that it can, for example, be bent in situ to pass over the fire risk points, within a television cabinet or other apparatus to be protected, the tube preferably being made from nylon.
  • the flexibility of the tube can be a disadvantage in that the tube must be positively restrained by suitable mounting or positioning means to maintain its required bent shape.
  • the nylon material has questionable long-term resistance to vaporisable halogenated hydrocarbon fire extinguishants such as bromochlorodifluoromethane (BCF).
  • the invention provides apparatus of the kind specified where the tube is made from polyvinylidenefluoride and has been preformed into a self-maintaining convoluted shape.
  • PVDF Polyvinylidenefluoride
  • the PVDF tube is pre-formed into a helix.
  • This form can be produced by simple and inexpensive winding techniques and the coiled tube can of course store a much greater quantity of extinguishant than a straight length of equivalent tubing extending between the same two end points.
  • the tube is preformed into a flat spiral.
  • many other convoluted forms e.g.
  • serpentine may be provided and in addition to the above-exemplified regular geometrical forms, which can be regarded as "standard" tube configurations applicable to a range of different risks, the tubes of such apparatus can, by appropriate heat treatment and manipulation, be provided in more complex and specially defined forms tailored to the form of specified risks to be protected and to the corresponding required volume of extinguishant.
  • the illustrated apparatus comprises a helix of PVDF tubing 1 sealed at each end and containing a quantity of BCF fire extinguishant.
  • the tube 1 is shown mounted to a bracket having feet 3 by which the apparatus can be mounted to a surface in the vicinity of the risk to be protdcted-e.g. the top inside surface of a mail box.
  • the tube 1 is attached to the bracket 2 simply by snapping its end coils into grooves 4 in the bracket, the inherent rigidity of the tube being sufficient to maintain the integrity of its preformed shape without any firmer means of fixation to the bracket.
  • the bracket 2 could be dispensed with and the coiled tube simply suspended e.g. by hooks over the risk to be protected.
  • the tubing can be wound in its softened state directly as it is led off the extrusion machine by which it is made, or else a manufactured stock of tubing provided on a large diameter drum can be separately wound after being fed through a heated chamber to raise the tubing to workable temperature.
  • the tubing is preferably wound in a continuous length and then cut into sections for filling and sealing, the total number of coils in an extinguisher of course being open to choice in accordance with the desired capacity of extinguishant.
  • the extinguishant is preferably dyed a conspicuous colour-green to accord with the generally-accepted colour coding for halon extinguishers-so as to be readily visible through the translucent PVDF tube wall and hence assist in checking for serviceability.
  • 1a and 1b comprises an approximately 2.S"m length of 8 mm outside diameter.
  • 1 mm wall thickness PVDF tubing wound into 20 coils of 40 mm mean diameter, the overall length of the wound helix being approximately 250 mm in its relaxed condition.
  • This tube contains 100 gm of BCF at a fill ratio of approximately 85%, giving an internal pressure of 2 bar at 15°C.
  • the tube 1 is mounted so as to be exposed to the heat of any fire which may develop in the risk to be protected.
  • the pressure of the vaporizing extinguishant stored in the tube increases until the tube wall can no longer withstand the pressure loading and the tube bursts with instantaneous release of the pressurised extinguishant.
  • this occurs at a tube temperature of approximately 180°C and an extinguishant pressure of approximately 7 bar.
  • the burst will occur at that location on the tube where the heat input from the fire is the greatest and which accordingly softens first, all points along the tube being equally temperature sensitive.
  • a coiled tube made and filled in accordance with the foregoing example.
  • the tube was suspended adjacent to the top inside surface of a simulated mail box, the latter comprising a square steel cabinet with each side measuring 600 mm and having an internal volume of 0.216 m 3 ; an opening measuring 200x500 mm was provided in the top of the cabinet and a vent slot measuring 5x550 mm was cut at the bottom edge of one side of the cabinet in order to cause a through draught.
  • a quantity of manilla envelopes were placed in the bottom of the cabinet, sprinkled with 50 cc of N Heptane and ignited. The tube ruptured within 14 seconds from ignition of the envelopes and the released BCF extinguished the fire. Damage to the envelopes was slight and the contents of the majority would be readable.
  • FIGs 2a and 2b these illustrate another form of apparatus in accordance with the invention, comprising a flat spiral of PVDF tubing 6 sealed at each end 7 and containing a quantity of BCF fire extinguishant.
  • the tube is shown held in a mounting frame 8 having feet 9 by which the apparatus can be mounted to a surface in the vicinity of the risk to be protected- e.g. the top inside surface of a shelf or drawer compartment in a data-storage cabinet.
  • the tube 6 is attached to the frame 7 simply by snapping its coils into grooves 10 provided in the "spokes" of the frame.
  • the operation and performance of this embodiment is similar to that already described in relation to Figures 1a and 1b.
  • the apparatus In some applications of fire extinguishing apparatus according to the invention it is desirable to provide electric switching means which are operated automatically when the apparatus responds to the specified temperature condition, e.g. to initiate an alarm and/or to isolate the risk from its power source in the case where the risk comprises electrical or electronic equipment.
  • One way to achieve this function is to deposit an electrically-conductive track along the outside of the plastics tube and to monitor the integrity of this track so that breakage of the track on rupture of the tube in response to a fire acts to signal the existence of the fire condition.
  • the internal stresses which are set up in the pre-formed tube when heated could be used to provide a signal.
  • an electrical contact could be deposited upon the flattened end portion of a tube as indicated at 11 in Figure 1 b. In use this contact is clamped against fixed contacts to complete an electrical circuit.
  • the tube is heated in the event of a fire considerable stresses are set up in the tube as a whole-for example in the case of a coiled tube there will be a tendency to unwind-and it is arranged that the anticipated force on the end of the tube resulting from such reaction displaces the tube end from its clamped position thereby opening the associated electrical circuit and signalling the fire condition.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fire-Extinguishing Compositions (AREA)

Claims (7)

1. Appareil extincteur d'incendie, comportant un tube scellé (1, 6) en matière plastique qui contient un fluide extincteur sous pression, cette pression et la résistance du tube (1, 6) étant telles qu'en service le tube (1, 6) résiste à la pression du fluide extincteur aux températures ambiantes normales, mais se remollit et éclate pour libérer le fluide extincteur s'il est chauffé au-dessus d'une température fixée; caractérisé en ce que ledittube (1, 6) est confectionné en poly(fluorure de vinyl- idène) et a subi un façonnage pour être mis dans une forme convolutée qui se maintient d'elle-même.
2. Appareil conforme à la revendication 1, caractérisé en ce que le tube (1) a été façonné en hélice.
3. Appareil conforme à la revendication 1, caractérisé en ce que le tube (6) a été façonné en spirale plate.
4. Appareil conforme à l'une des revendications 1 à 3, caractérisé en ce que le fluide extincteur est le bromochlorodifluorométhane.
5. Appareil conforme à l'une des revendications 1 à 4, caractérisé en ce que le tube (1, 6) comporte des moyens pour produire un signal détectable lorsque le tube est chauffé à la température fixée précitée.
6. Appareil conforme à la revendication 5, caractérisé en ce qu'il comporte au moins une piste électriquement conductrice disposée sur le tube (1, 6) dans le sens de la longueur de celui-ci, cette piste étant prévue pour être brisée par l'éclatement du tube (1, 6).
7. Appareil conforme à la revendication 5, caractérisé en ce qu'un endroit (5) du tube (1) porte une plage de contact électrique (11 et en ce que cet endroit (5) du tube (1) est destiné à se déplacer sous l'effet d'un changement de forme du tube (1) résultant de la température fixée précitée.
EP83302499A 1982-05-12 1983-05-04 Appareil extincteur d'incendie Expired EP0094192B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8213844 1982-05-12
GB8213844 1982-05-12

Publications (2)

Publication Number Publication Date
EP0094192A1 EP0094192A1 (fr) 1983-11-16
EP0094192B1 true EP0094192B1 (fr) 1986-08-27

Family

ID=10530324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83302499A Expired EP0094192B1 (fr) 1982-05-12 1983-05-04 Appareil extincteur d'incendie

Country Status (6)

Country Link
EP (1) EP0094192B1 (fr)
AU (1) AU559770B2 (fr)
DE (1) DE3365583D1 (fr)
ES (1) ES8407399A1 (fr)
GB (1) GB2119646B (fr)
ZA (1) ZA833304B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8926849D0 (en) * 1989-11-28 1990-01-17 Melton David L Fire extinguisher
GB9026894D0 (en) * 1990-12-11 1991-01-30 Melton David L Damage sensing apparatus
GB2349084B (en) * 1999-03-27 2002-09-18 David Laurence Melton A temperature detector
DE202012100623U1 (de) * 2012-02-24 2012-03-22 Job Lizenz Gmbh & Co. Kg Brandschutzeinrichtung für elektrische Kleingeräte
CA2956730A1 (fr) * 2014-08-28 2016-03-03 Firetrace Usa, Llc Procedes et appareil pour panneau d'extinction d'incendie
DE102015212032A1 (de) * 2015-06-29 2016-12-29 Siemens Aktiengesellschaft Feuerlöschsystem
EP3463593A4 (fr) * 2016-05-31 2020-03-04 Malovec, Roman Dispositif d'auto-extinction automatique d'incendie et procédé de protection contre l'incendie
SK7760Y1 (sk) 2016-05-31 2017-05-03 Roman Malovec Samohasiace automatické požiarne zariadenie a spôsob protipožiarnej ochrany
CN107961464A (zh) * 2017-12-15 2018-04-27 安徽中科中涣防务装备技术有限公司 一种温度及压力释放的灭火装置
DE102017130785A1 (de) 2017-12-20 2019-06-27 Eppendorf Ag Temperierte Zentrifuge
FR3088215B1 (fr) * 2018-11-12 2023-05-12 Hutchinson Tuyau extincteur et son procede de fabrication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857971A (en) * 1955-05-16 1958-10-28 Ferris Products Co Inc Fire extinguisher
US2917116A (en) * 1958-02-17 1959-12-15 Gerald W Wyant Fire retarding device
US3113624A (en) * 1962-06-21 1963-12-10 John C Haggott Automatic fire protection apparatus
GB1357010A (en) * 1971-05-03 1974-06-19 Chubb Fire Security Ltd Fire-extinguishing apparatus
DK111279A (da) * 1979-03-19 1980-09-20 B P Sperling Selvvirkende trykloes ildslukker

Also Published As

Publication number Publication date
ES522289A0 (es) 1984-09-16
GB2119646A (en) 1983-11-23
AU1448483A (en) 1983-11-17
ZA833304B (en) 1984-01-25
DE3365583D1 (en) 1986-10-02
GB8312223D0 (en) 1983-06-08
ES8407399A1 (es) 1984-09-16
EP0094192A1 (fr) 1983-11-16
GB2119646B (en) 1985-12-11
AU559770B2 (en) 1987-03-19

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