US3568774A - Automatic fire-extinguishing device for automobiles, among other uses - Google Patents

Automatic fire-extinguishing device for automobiles, among other uses Download PDF

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Publication number
US3568774A
US3568774A US780330A US3568774DA US3568774A US 3568774 A US3568774 A US 3568774A US 780330 A US780330 A US 780330A US 3568774D A US3568774D A US 3568774DA US 3568774 A US3568774 A US 3568774A
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United States
Prior art keywords
valve
piston
fluid
pilot valve
fire extinguishing
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Expired - Lifetime
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US780330A
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English (en)
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Andre Michel Meoule
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/003—Extinguishers with spraying and projection of extinguishing agents by pressurised gas

Definitions

  • the main valve includes a piston which is displaced by the control fluid, the purpose of said piston being on the one hand to open the feeding valve of the ejection parts, and, on the other hand, to control a changeover switch placed in the electric circuit of the vehicle.
  • the object of this invention is to overcome this inconvenience. It consists basically in an automatic extinguisher controls the main valve, the pressure of which is set by the pilot valve, is the extinguishing fluid itself.
  • One specific point of the invention is that the fluid which controls the main valve, the pressure of which is set by the valves, is the extinguishing fluid itself.
  • FIG. 1 is a diagram showing the whole of the device
  • FIG. 2 is a longitudinal section through the main valve
  • FIG. 3 is a longitudinal section through the pilot valve
  • FIG. 4 shows a vehicle, partly broken away, fitted with an automatic extinguishing device
  • FIG. 5 is a horizontal section of the vehicle, with the body removed, according to FIG. 4. 7
  • a container of extinguishing fluid 1 feeds, through a sluice gate 2 and a duct 3, a main valve 4 controlled by the control fluid the pressure of which is set by a pilot valve 5.
  • Said fluid is conveyed to the pilot-valve 5 through a duct 6 tapped on duct 3.
  • Pilot valve 5 feeds the main valve with fluid under pressure, through duct 7.
  • a detector 8, of expansion type actuates pilot valve 5, through duct 9, made of a capillary tube, for instance.
  • the fire extinguisher is made of one of or several ejection parts or nozzles 10, fed by a duct 11, connected to he the outlet of valve 4.
  • Main valve 4 controls, besides, a changeover switch 12 placed in the electric circuit 13 of the vehicle.
  • main valve 4 is formed of a valve body 41, preferably cylindrical, fitted with a tapping 42 for duct 3 for the feeding with extinguishing fluid from container 1 with a tapping 42 for duct 11 for the feeding of nozzle and with a tapping 44 for duct 7 from pilot valve 5, the control fluid feeder.
  • valve body 41 comprises a cylinder 44 fitter with a piston 45. Said piston demarcates two chambers 44a and 44b. Chamber 44b is connected with control fluid duct 7, while chamber 44a communicates with the atmosphere through a boring 44c. Piston 45 is connected with two drivingrods 45a and 45b, assembled on either side of piston 45, thus improving the tightness of chamber 44b and the guiding of piston 45.
  • the upper end of driving rod 45a bears against the lower end of a rod 46b attached to a valve 46 placed between ducts 3 and 11.
  • Conical head valve 46 is connected with a driving rod 46a and placed in a cylinder 47 having at its lower end another cylinder 48 having a smaller diameter and connected to the first one by a conical shouldering49. Cylinders 47 and 48, as well as shoulder 49, are all three coaxial with valve body 41.
  • valve 46 In standing-by position, valve 46 is seated against conical shoulder 49 by means of spring 52 which takes its bearing on bolt 50. Duct 3 is thus cut off from duct 11. Besides, the second driving rod 46b bears against driving rod 45a of piston 45. As a result, an increase of fluid pressure in chamber 44b moves piston 45 upwardly. Driving rod 45a'actuates driving rod 46b which lifts valve 46,the latter connects up duct 3 with duct 11.
  • piston 45 and valve 46 are so designed that the pressure of the control fluid on piston 45 is superior to the total pressure of the extinguishing fluid and of spring 52 on valve 46, in order to allow the opening of valve 46.
  • Lever 121 is maintained in its lower standing-by position by the lower tip of driving rod 4512 which, by its bearing on stop with a guiding device 51, placed in valve body 41, which will 121b, locks the lever in the position shown in full lines on FIG. 2.
  • lever 121 holds down small rod 125a which presses spring tongue 126 against stud 127, thus switching-on conducting wires 131 and 132.
  • pilot valve 3 is composed of a body 51 fitted with several cylinders. Said body 51 is connected, through a branch-pipe 52, to duct 7 which is tapped to main valve and, through tapping 53, to fluid control feeding duct 6. Connection between ducts 6 and 7 is effected by double clack 54, hearing by its conical parts 54a and 54b, on corresponding coaxial conical shoulders 55a and 55b tooled into body 51. Double valve 54 is set against said shoulders by spring 56, housed in threaded chamber 57 and bearing on bolt 58 which blocks up chamber 57. Spring 56 is intended to counterbalance the pressure of that part of fluid which is above double clack 54.
  • Pressure of spring 56 is adjusted by bolt 58 which is fitted with a counternut 58a.
  • the adjustment of bolt 58 allows to set the opening point of double clack 54 according to the temperature at which the fire extinguisher must work.
  • Chamber 57 the diameter of which is larger than that of the biggest parts of the conical units of the double valve, is intended to allow the insertion of double valve 54 into duct 59 which connects ducts 6 and 7 together.
  • Pilot valve 5 is, as a matter of fact, actuated by detector 8, which is composed of a container filled up with liquid. Said detector 8 is placed close to a point whose increase of temperature is to be watched. Detector 8 is connected, through duct 9- made preferable of a capillary tube to a chamber 81 which contains a monometrical cap 82. Said cap is composed of a rigid disc 82a, fastened to the bottom part of chamber 81 through a wall having an almost cylindrical shape and made of a hood, for instance.
  • Said hood is so designed that any increase of pressure in chamber 81 presses down disc 82a but does not cause any deformation of wall 82.
  • Rigid disc 82a bears on head 83a of driving rod 83, the other end 83b of which bears on double clack 54.
  • the lower end 83b of driving rod 83 by pressing down double clack 54, connects fluid control ducts 6 and 7, which fluid controls the main valve 4, as described above.
  • Double clack 54 can move only if the fluid pressure in chamber 81 is above a limit which depends on the adjustment of spring 56. Now, as said pressure depends on the expansion of the fluid in detector 8, i.e. on the temperature detected, it is thus possible to operate the fire extinguisher at temperatures above a selected temperature.
  • FIGS. 4 and 5 show an automobile 90 fitted with an automatic fire extinguisher, according to the invention.
  • container 1 main valve 4 and pilot valve or valves 5 are placed in a housing-box 91, which is itself placed in the vehicle s boot.
  • Detectors 8 are generally placed on both sides of the engine 93 and close to the petrol tank. Ducts 9, which connect these detectors separately or jointly to one or several valves 5 placed in housing-box 91, are not shown on FIGS. 4 and 5. Besides, feeding ducts 11 and nozzles are shown. Nozzles l0, placed all around the engine 93 and the body 95, must be fed, as well as many nozzles places close to tank 94.
  • the extinguishing fluid to be used can be carbonic gas, for instance.
  • the invention is not limited to the above described assembly process. Different other designs and construction process can be used without wandering from the invention outline.
  • An automatic fire extinguishing device for automobiles among other uses comprising a sealed tank for fire extinguishing fluid under pressure, nozzles, a normally closed main valve having an inlet connected with said tank and having an outlet connected with said nozzles, said valve including a piston for opening the valve, a normally closed pilot valve having an inlet connected with said tank and having an outlet, a conduit connecting the pilot valve outlet with said piston, a normally closed electric switch adapted to be connected into an automobile ignition circuit, a heat detector operatively connected with the pilot valve for opening it when the detector is exposed to a predetermined high temperature, whereupon fire extinguishing fluid from the pilot valve will flow through said conduit and move said piston to open the main valve in order to connect said tank with the nozzles, and means actuated by the moving piston for opening said switch.
  • said switch-opening means include a pivoted lever, a rod connected with said piston and normally holding said lever in switch-closing position, and a spring urging the lever to switch-opening position when said movement of the piston retracts said rod from the lever.
  • An automatic fire extinguishing device in which said detector is a sealed container filled with a heat expansible fluid, and said pilot valve includes a chamber having a movable wall for opening that valve, the fluid in said detector being connected with said chamber for moving said wall when the detector fluid expands.

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  • 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)
US780330A 1968-04-25 1968-12-02 Automatic fire-extinguishing device for automobiles, among other uses Expired - Lifetime US3568774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR149497 1968-04-25

Publications (1)

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US3568774A true US3568774A (en) 1971-03-09

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US780330A Expired - Lifetime US3568774A (en) 1968-04-25 1968-12-02 Automatic fire-extinguishing device for automobiles, among other uses

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US (1) US3568774A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1583829A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688846A (en) * 1971-07-06 1972-09-05 William D Lease Fire suppression system for heavy mobile machines
US3876011A (en) * 1974-02-19 1975-04-08 Kidde & Co Walter Apparatus for preventing and extinguishing automotive vehicle fires
US3878898A (en) * 1971-11-06 1975-04-22 Mather & Platt Ltd Heat detection system
US4332368A (en) * 1978-08-21 1982-06-01 Crown Systems Company Valve
DE3122897A1 (de) * 1981-06-10 1983-01-27 Deugra Gesellschaft für Brandschutzsysteme mbH, 4030 Ratingen Automatisches feuerloeschsystem fuer im untertagebergbau eingesetzte fahrzeuge
US4887630A (en) * 1989-03-15 1989-12-19 Mestek, Inc. Pneumatic control system for air handling system damper
US5613564A (en) * 1995-07-31 1997-03-25 Rhines; Andy J. Vehicle engine fire extinguisher apparatus
US5899275A (en) * 1995-05-12 1999-05-04 Koatsu Co., Ltd. Inert gas fire fighting system and pressure control valve for inert gas fire fighting system
US20060278412A1 (en) * 2005-05-31 2006-12-14 Kidde Technologies Incorporated Tire fire suppression and vehicle with same
GB2474271A (en) * 2009-10-08 2011-04-13 Graviner Ltd Kidde Fire suppression system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536712A1 (fr) * 1982-11-26 1984-06-01 Rot Extincteurs Dispositif de protection contre l'incendie des vehicules
GR1000284B (el) * 1989-11-02 1992-05-12 Anninos Fotios Πυροσβεστικος μηχανισμος για οχηματα.
FR2714613B1 (fr) * 1994-01-06 1996-03-15 Kidde Dexaero Dispositif de détection et d'extinction d'incendie pour des véhicules terrestres.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1945284A (en) * 1927-07-20 1934-01-30 Automatic Sprinkler Co Automatic fire extinguishing apparatus
US3387662A (en) * 1966-08-31 1968-06-11 Frank A. Molgano Jr. Fire extinguishing apparatus
US3464497A (en) * 1968-01-23 1969-09-02 Ar Kay Enterprises Inc Automatic fire extinguisher

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1945284A (en) * 1927-07-20 1934-01-30 Automatic Sprinkler Co Automatic fire extinguishing apparatus
US3387662A (en) * 1966-08-31 1968-06-11 Frank A. Molgano Jr. Fire extinguishing apparatus
US3464497A (en) * 1968-01-23 1969-09-02 Ar Kay Enterprises Inc Automatic fire extinguisher

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688846A (en) * 1971-07-06 1972-09-05 William D Lease Fire suppression system for heavy mobile machines
US3878898A (en) * 1971-11-06 1975-04-22 Mather & Platt Ltd Heat detection system
US3876011A (en) * 1974-02-19 1975-04-08 Kidde & Co Walter Apparatus for preventing and extinguishing automotive vehicle fires
US4332368A (en) * 1978-08-21 1982-06-01 Crown Systems Company Valve
DE3122897A1 (de) * 1981-06-10 1983-01-27 Deugra Gesellschaft für Brandschutzsysteme mbH, 4030 Ratingen Automatisches feuerloeschsystem fuer im untertagebergbau eingesetzte fahrzeuge
US4887630A (en) * 1989-03-15 1989-12-19 Mestek, Inc. Pneumatic control system for air handling system damper
US5899275A (en) * 1995-05-12 1999-05-04 Koatsu Co., Ltd. Inert gas fire fighting system and pressure control valve for inert gas fire fighting system
US5613564A (en) * 1995-07-31 1997-03-25 Rhines; Andy J. Vehicle engine fire extinguisher apparatus
US20060278412A1 (en) * 2005-05-31 2006-12-14 Kidde Technologies Incorporated Tire fire suppression and vehicle with same
WO2006130363A3 (en) * 2005-05-31 2007-03-01 Kidde Tech Inc Tire fire suppression and vehicle with same
US7434629B2 (en) * 2005-05-31 2008-10-14 Kidde Technologies Incorporated Tire fire suppression and vehicle with same
JP2008541937A (ja) * 2005-05-31 2008-11-27 キッデ テクノロジーズ インコーポレーテッド タイヤ消火装置およびそれを備えた車両
AU2006252819B2 (en) * 2005-05-31 2011-11-17 Kidde Technologies Incorporated Tire fire suppression and vehicle with same
GB2474271A (en) * 2009-10-08 2011-04-13 Graviner Ltd Kidde Fire suppression system
US20110083864A1 (en) * 2009-10-08 2011-04-14 Smith Paul D Fire suppression system
US8657022B2 (en) 2009-10-08 2014-02-25 Kidde Technologies, Inc. Fire suppression system
GB2474271B (en) * 2009-10-08 2014-04-02 Kidde Tech Inc Fire suppression system

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Publication number Publication date
FR1583829A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-12-05

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