EP0878212B1 - Feuerunterdrückungssystem - Google Patents

Feuerunterdrückungssystem Download PDF

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Publication number
EP0878212B1
EP0878212B1 EP98108720A EP98108720A EP0878212B1 EP 0878212 B1 EP0878212 B1 EP 0878212B1 EP 98108720 A EP98108720 A EP 98108720A EP 98108720 A EP98108720 A EP 98108720A EP 0878212 B1 EP0878212 B1 EP 0878212B1
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EP
European Patent Office
Prior art keywords
water
pressure
flow
fire
liquid solution
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
EP98108720A
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English (en)
French (fr)
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EP0878212A3 (de
EP0878212A2 (de
Inventor
William Shipley
Richard Biehl
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Ansul Inc
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Ansul Inc
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Filing date
Publication date
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Publication of EP0878212A2 publication Critical patent/EP0878212A2/de
Publication of EP0878212A3 publication Critical patent/EP0878212A3/de
Application granted granted Critical
Publication of EP0878212B1 publication Critical patent/EP0878212B1/de
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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
    • 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
    • A62C3/006—Fire prevention, containment or extinguishing specially adapted for particular objects or places for kitchens or stoves

Definitions

  • the present invention relates to a fire suppression system and method for extinguishing fires by dispensing a fire extinguishing composition onto the fire followed by the application of water.
  • the system can utilize a particular extinguishing composition which comprises a unique mixture of at least two salts wherein the mixture exhibits a single minimum melting point.
  • fires are divided into four general classes; namely, Class A, Class B, Class C and Class D.
  • Class A fires are those involving ordinary combustible material such as paper, wood, etc. and can be extinguished by quenching and cooling with large quantities of water or solutions containing a large percentage of water.
  • Class B fires are those involving shortening, oils, greases, flammable liquids, etc.
  • the use of water is generally ineffective, because the contact of water with the hot oil causes a great amount of splattering without extinguishing the flames and the hot burning oil or grease may spread the fire.
  • This type of fire is the most difficult to extinguish because of the low auto-ignition points of shortening, oils and greases which are in the range of about 360°C to 380°C.
  • the presence of flammable materials in large quantities makes it extremely important to extinguish the fire as rapidly as possible and also bring the temperature down to prevent any reflash which occurs at a lower temperature of about 337°C.
  • Class C fires involve electrical equipment.
  • the electrical conducting property of the extinguishing material is an important consideration. For this reason, it has been found that dry fire extinguishing agents are generally more useful. It has also been found that the fire extinguishing agents useful for-Class B fires are generally also useful for Class C fires.
  • Class D fires involve combustible metals and are extinguished with special dry powders.
  • Prior art systems for extinguishing fires in cooking equipment in a kitchen have utilized a water spray.
  • the time to extinguish fat, oil, shortening or grease fires may take up to six minutes.
  • the water spray can cause violent flaming.
  • the fat, oil, shortening or grease fire is eventually extinguished because of the cooling action of the applied water on the hot oil or grease.
  • a system which utilizes water spray fire protection for hoods over cooking units is shown in U.S. Pat. No. 4,356,870.
  • Another system which automatically releases a high volume flow of extinguishant over critical areas of a fat or grease fire is disclosed in U.S. Pat. No. 3,584,688.
  • wet chemical agents to suppress hostile fires in hoods, ducts and cooking appliances.
  • These wet agents are typically aqueous solutions of organic salts specifically formulated to suppress fuel-in-depth grease fires in two distinct phases.
  • the agent is sprayed directly onto the grease fire for rapid extinguishment (approximately 5 seconds) of the flames by chemical reaction.
  • the wet agent continues to be discharged onto the hazard to both cool and combine with the hot grease to generate a protective foam blanket on top of the hot grease.
  • the foam blanket secures the hot grease from reflashing by excluding air until the grease either cools down below its reflash temperature or the foam blanket breaks down from the heat of the hot grease below, or both.
  • the water content in the wet agent is an effective cooling agent (a positive feature) but is offset by the insulating effect of the foam blanket which retards the heat release of the hot grease (a negative feature).
  • the present invention relates to a fire suppression system and method in which an extinguishing agent is automatically discharged from a limited source of supply of the wet chemical extinguishing agent for rapid extinguishment of the fire, followed by water application to the locus of the fire from an unlimited source of supply of water.
  • the subsequent automatic application of water provides rapid cooling of the hot burning material below its reflash temperature.
  • the protective foam blanket normally generated by an extinguishing agent alone can be negated by water spray dilution in order to maximize the superior cooling effects of the water against the hot burning material such as grease or fat.
  • the present hybrid system exploits the best fire suppression properties of both agents against fires i.e. the wet chemical extinguishing agent provides rapid flame extinguishment and water provides rapid cooling following extinguishment.
  • the present hybrid system is significantly more robust (fire test variables are less critical to its fire suppression performance) than current water or wet chemical agent systems.
  • an extinguishing agent in liquid form is automatically delivered to a fire by a fire suppression system.
  • the fire suppression system comprises a means for automatic fire detection, a means for automatic actuation of the suppression system, a storage vessel for an extinguishing agent, distribution piping for the extinguishing agent and for water, and nozzles for spraying the wet chemical extinguishing agent and subsequently water onto the fire.
  • the operation of the system is such that, at the completion of the discharge of the extinguishing agent, an automatic switching means provides for the subsequent application of water automatically through the same distribution piping and spray nozzles of the system as are employed to apply the extinguishing agent onto the fire.
  • the automatic switching means to switch from the flow of extinguishing agent to a flow of water is accomplished by an automatic valve.
  • the automatic switching valve is actuated with either gas or hydraulic pressure, depending on which of three optional valves is used with the dry pipe system, as described in the following section describing the details of the present invention by reference to the figures.
  • a liquid extinguishing agent is contained within the distribution piping and is delivered to the fire by a system comprising a means for fire detection, a means for automatic actuation, distribution piping for the extinguishing agent and water, and spray nozzles for dispensing the extinguishing agent and water onto the fire.
  • a system comprising a means for fire detection, a means for automatic actuation, distribution piping for the extinguishing agent and water, and spray nozzles for dispensing the extinguishing agent and water onto the fire.
  • the extinguishing agent can also be stored in solid rather than liquid form within a primary storage means and can be dissolved by the flow of water into the primary storage means.
  • the water flow is automatically actuated by a means for fire detection and a means for automatic actuation.
  • the flow of the extinguishing agent dissolved in water occurs through distribution piping and spray nozzles, with the flow of water continuing after the dissolved extinguishing agent solution is exhausted.
  • the extinguishing agent can also be in solid form within multiple storage means located directly prior to each spray nozzle and can be dissolved by the flow of water.
  • the flow of water is automatically actuated by a means for fire detection and a means for automatic actuation.
  • the flow of the extinguishing agent dissolved in water occurs through the spray nozzles, with the flow of water continuing after the dissolved salt solution is exhausted.
  • FIG. 1 One dry pipe embodiment of the present system is shown in Fig. 1.
  • a tank 3 holding a solution of the fire extinguishing composition 1 is connected through pipes 7 to appliance nozzles 6, plenum nozzles 8 and duct nozzles 9.
  • a valve assembly 4 (detail shown in Figs. 4 and 4b) mounted on the tank 3 controls the sequential release of the solution of the fire extinguishing composition followed by water.
  • a detection means 10 When a fire is detected by a detection means 10, a seal in a gas cartridge 2 release is punctured and gas at high pressure is released from the gas cartridge 2.
  • the high pressure gas simultaneously presses a spring loaded piston against the water inlet valve (not shown) to prevent water from being discharged and forces the solution in the tank to be discharged through the nozzles 6, 8 and 9.
  • the gas pressure is reduced to a particular pressure, such as for example 45 psi, the spring loaded piston of the valve assembly moves to an open position to permit water flow down to the tank 3 and out to the nozzle
  • the embodiment shown in Fig. 2 is a wet pipe system.
  • the storage tank 20 and the distribution piping 21 are filled with wet agent.
  • the tank 20 and distribution piping 21 are under pressure from compressed gas in the top of the agent tank.
  • Discharge nozzle valves 22, 23, 24 are closed.
  • one or more heat-actuated nozzle valves 22, 23, 24 opens in response to heat from hostile fire(s) wet agent is automatically expelled from the agent tank 20 and distribution piping 21 through the open nozzles 27, 28, 29 by the compressed gas in the tank 20.
  • the compressed gas pressure drops below in the water pressure at the water inlet check valve 26
  • water will automatically flow through the distribution piping 21 and the same open nozzles 27, 28, 29 until the water supply is manually shut off. Only those nozzles 27, 28, 29 which open in response to heat from hostile fires will automatically discharge agent and water onto the burning hazards.
  • FIGS 3a, 3b and 3c show cross-sections of one automatic valve option of a dry pipe system.
  • the storage tank 31 is filled with wet chemical agent 32 and is under atmospheric pressure.
  • a valve 33 has a gas inlet port 34 which is connected to a gas pressure regulator (not shown) on the Ansul Automan release assembly (not shown).
  • the gas regulator is connected to an expellant gas cartridge which contains nitrogen or carbon dioxide expellant gas under high pressure.
  • the valve water inlet 35 is connected to a municipal water supply or restaurant wet sprinkler system and is under static water pressure.
  • the double piston assembly 36 is locked in the closed position by the spring-loaded reset pin 37 so that static water pressure will not move the double piston assembly 36.
  • the valve discharge outlet 38 is piped to multiple discharge nozzles (not shown), each aimed at a potential fire hazard.
  • the spring-loaded release assembly 39 automatically actuates to puncture the seal of the expellant gas cartridge (not shown), thereby releasing expellant gas under high pressure through the pressure regulator (not shown), where the pressure is reduced to a lower operating pressure, and thence to the valve 33.
  • the expellant gas performs two functions in the tank assembly 31. First, it thrusts the double piston assembly 36 toward the water inlet port 35 to release the spring-loaded reset pin 37, which retracts into a recess in the valve body as shown in Fig. 3b.
  • the expellant gas is ported through the valve 33 to the top of the tank where it pressurizes the wet agent 32 to force it down the tank, up the pick-up tube 41, through the valve discharge outlet 38 and out the discharge nozzles (not shown).
  • gas pressure on the piston 42 and liquid pressure from the wet agent on the other piston 43 hold the piston assembly 36 in the unlocked position against the static water pressure.
  • the present valve is mechanically activated using cartridge pressure to pneumatically actuate the valve and initiate the flow of the extinguishing agent.
  • FIGS 4a and 4b show another automatic valve option of a dry pipe fire protection system.
  • Tank 50 is filled with a wet chemical agent 51 under atmospheric pressure.
  • the water inlet port 52 of the valve assembly 53 is piped to a source of water supply.
  • the valve 53 is closed and is under static water pressure.
  • the connected water line (not shown) includes a check valve (not shown) to prevent backflow when the system is initially actuated.
  • the high pressure gas inlet port 54 of the valve 53 is piped to the high pressure side of the gas pressure regulator (not shown) on the spring-loaded release assembly (not shown) and is under atmospheric pressure until the fire protection system is actuated.
  • the high pressure line (not shown) includes a check valve (not shown) to trap high pressure gas in the line when the system is actuated.
  • the high pressure gas line may include a bleed orifice so that the high pressure gas is slowly released to allow water pressure to automatically close the valve after the water has discharged for a minimum duration, to minimize flooding.
  • the low pressure gas inlet port 55 on the pick-up tube assembly is piped to the low pressure side of same gas pressure regulator and is also under atmospheric pressure until the system is actuated.
  • the gas pressure regulator (not shown) is piped to a gas cartridge (not shown) a small pressure vessel, which contains a fixed volume of nitrogen or carbon dioxide expellant gas under high pressure.
  • the tank discharge outlet 56 on the pick-up tube assembly 57 is piped to multiple discharge nozzles (not shown), each aimed at a potential fire hazard.
  • the spring-loaded release assembly automatically actuates to puncture the seal of the expellant gas cartridge, thereby releasing gas under high pressure to both the high pressure gas inlet of the valve 54 and the pressure regulator, where the high gas pressure is reduced to a lower operating pressure.
  • the high pressure gas opens the valve 53 to the water supply by thrusting the piston 59 and stem assembly 60 towards the water inlet 52 against the force of the spring 61 and the static water pressure. Once the stem assembly 59 is unseated, the trapped high pressure gas will hold it open until the gas pressure is manually released after the fire event when the system is recharged and reset.
  • the low pressure gas from the regulator enters the top of tank to expel the wet agent 51 from the tank 50 through the tank discharge outlet 56, discharge piping (not shown) and discharge nozzles (not shown). Once the low pressure gas is flowing, the regulator will feed the low pressure gas into the tank at a constant pressure until the decaying pressure of the gas in the fixed-volume cartridge falls below the preset outlet pressure of the regulator, at which time the gas pressure from the regulator will also decay with time.
  • FIG. 5 shows a third automatic valve option of the dry pipe system.
  • the automatic remote valve 70 can be located in the agent distribution piping (not shown) of the present fire protection system between the wet agent storage tank (not shown) and the discharge nozzles (not shown).
  • the agent inlet port 71 on top of the valve is piped to the discharge connection on the wet agent storage tank and is under atmospheric pressure until the system is discharged.
  • the discharge outlet 72 on the valve is piped to multiple discharge nozzles (not shown), each aimed at a potential fire hazard.
  • the water inlet port 76 on the bottom of the valve is piped to a water supply source and is under static water pressure.
  • the piston 74 includes two circumferential O-rings (not shown) to seal against hydraulic pressure from either side. The piston 74 is locked in the closed position by the spring-loaded reset pin assembly 75 to resist the static water pressure. Because the reset pin 75 is hooked on the piston, it cannot retract (move to the right) under spring force until the piston is thrust downward during the
  • the spring-loaded release assembly automatically actuates to puncture the seal of the expellant gas cartridge (not shown), thereby releasing expellant gas (nitrogen, carbon dioxide, or air) under high pressure through the pressure regulator (not shown), where the pressure is reduced to a lower operating pressure.
  • the gas is routed to the inside of the agent storage tank (not'shown) where it forces the wet agent out of the tank, through the normally-open ports in the automatic valve 70 and out the discharge nozzles (not shown).
  • the hydraulic pressure of the wet agent flowing through the automatic valve 70 will thrust the piston 74 down against water pressure to unlatch the reset pin 75 which will then retract under its spring force into the wall of the valve body. While the wet agent is flowing through the valve 70 under maximum regulated gas pressure, the piston 74 will remain in the closed position because the hydraulic pressure of the wet agent against the larger diameter of the piston 74 overcomes the water pressure against the smaller diameter of the piston.
  • FIG. 6 A particular system nozzle which can be used in the present invention is shown in Figure 6.
  • the nozzle 80 has a swivel joint 81 so that it rotate up to 30 degrees in any direction from the centerline of the body.
  • the nozzle 80 also includes a vane 83 which twists or spins the fluid being discharged out of the tip 82 to stabilize the exiting spray cone.
  • the internal bore of the nozzle tip is machined to a configuration which controls both the critical flow and spray angle of the discharge.
  • the nominal flow rate will be 1.7 gallons of water per minute (6.4 liters/min) at 80 psi nozzle pressure.
  • Spray angle (included angle of the cone of water being discharged) will be a nominal 60 degrees.
  • the flow rates and spray angles for the nozzles which protect ventilation hoods and ducts over the appliances are established based on the necessary environmental conditions of the nozzle location and based on the known need of extinguishing agent and water at the nozzle locus.
  • the appliance nozzle has a built-in swivel joint while the hood and duct nozzles do not need to swivel.
  • the present invention relates to a fire protection system which automatically actuates the sequential discharge of a fire extinguishing composition followed by water.
  • the fire protection system includes novel valve assemblies.
  • the valve assembly may be installed on the top of a tank holding the fire extinguishing composition or the valve assembly may be remote from the tank. Preferred valve assemblies are described herein above.
  • Fire extinguishing systems for use in a commercial kitchen are usually installed as a part of the exhaust hood over the cooking range.
  • the instant fire extinguishing system can be employed using various known extinguishing agents. Different types of nozzles with different flow rate controls and different spray angles are required for the different cooking appliances such as deep fryers, griddles and ranges.
  • a preferred fire extinguishing composition which is disclosed in concurrently filed copending patent application Serial No. entitled A COMBINATION OF A NOVEL FIRE EXTINGUISHING COMPOSITION EMPLOYING A EUTECTIC SALT MIXTURE AND WATER AND A METHOD OF USING SAME TO EXTINGUISH FIRES and this preferred composition is especially advantageous in the operation of the present fire suppression system.
  • the preferred novel fire extinguishing composition comprising a unique mixture of at least two salts I and II, wherein I is selected from the group consisting of a carbonate or bicarbonate of sodium or potassium and II is selected from the group consisting a chloride, sulfate, or tartrate salt of sodium or potassium, and the mixture I and II exhibits a single minimum melting temperature range by DSC.
  • the mixture is particularly effective when applied as a combination with additional water.
  • the characteristic of this unique mixture is analogous to that of a eutectic wherein a mixture of two or more metals or salts exhibit a minimum melting point.
  • I is a salt having the following characteristics: it dissociates to form carbon dioxide when heated, and it is soluble at a range of about 25 g to 150 g/100ml of water.
  • II is a salt or a mixture which when mixed at a particular ratio with I will provide a single minimum melting temperature range. It was found that by adding a small amount from 10 mole% to 20 mole% of II to I, the mixture exhibits a single minimum melting temperature range, lower than that of I alone or II alone. Also, at this temperature, the heat capacity of the mixture, its ability to absorb heat, is at a maximum, a value that is in excess of the heat capacity of the individual components.
  • the single minimum melting temperature range is determinable by the use of differential scanning calorimetry (DSC).
  • the unique mixture when applied as a fire extinguishing agent followed by water, the combination is extremely effective for extinguishing Class B fires involving oils or greases and will prevent re-flash/auto-ignition.
  • the mixture may be sprayed onto a fire as a concentrated aqueous solution of about 15%-30% by weight in water, followed by further application of water.
  • the mixture when initially sprayed onto a fire at a flow rate of about 4.5 L/min to 7.5 L/min will generate a thick layer of foam containing carbon dioxide. At these flow rates, the pressure is about 30 psi to 100 psi. This thick layer of foam smothers the burning flame rapidly, within 2-10 seconds.
  • the unique mixture when applied to the burning oil absorbs a large amount heat from the oil. It has been found that at a flow rate of about 4.5 L/min/nozzle - 7.5 L/min/nozzle, a 2-10 sec. application of a 25 wt% solution of a mixture of potassium bicarbonate with sodium sulfate in a mole% ratio of 85:15 followed by a 2-10 minute application at the same flow rate of water completely extinguishes an actively burning deep fryer containing about 50 L. (13 gal.) of cooking oil. Furthermore, the oil is cooled down to below 330°C to prevent re-flash.
  • the extinguishing agent can be any known extinguishant or is preferably the salt mixture disclosed in the copending application discussed hereinabove.
  • the extinguishant can be employed as a liquid solution or the system can be designed to employ an extinguishant in dry solid form which is converted to a liquid solution when the system is activated.
  • extinguishing agent storage options There are also various extinguishing agent storage options.
  • the extinguishing agent can be contained in one or more containers under compressed gas pressure in a dry pipe system.
  • the extinguishant can be contained in one or more containers under atmospheric pressure in a dry pipe system.
  • liquid extinguishant can be contained in the discharge piping under compressed gas pressure as a wet pipe system.
  • Agent expellant options include:
  • Compressed gas storage options include:

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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)
  • Fire-Extinguishing Compositions (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Gas-Filled Discharge Tubes (AREA)

Claims (7)

  1. Feuerunterdrückungssystem zum Löschen eines Feuers, wobei eine flüssige Lösung eines Feuerlöschmittels automatisch an das Feuer durch das Feuerunterdrückungssystem abgegeben wird, wobei das Feuerunterdrückungssystem eine Einrichtung zur Feuerdetektion (10), eine Einrichtung zur automatischen Betätigung (2; 22, 23, 24), ein Lagergefäß (3; 20), eine Verteilerrohrleitung (7; 21), Spritzdüsen (6, 8, 9; 27, 28, 29) sowie Mittel zum Bewirken der Austragung der flüssigen Lösung vor dem nachfolgenden Aufbringen von Wasser durch dieselbe Verteilerrohrleitung und dieselben Spritzdüsen umfasst.
  2. System nach Anspruch 1, wobei die Mittel zum Bewirken der Austragung der flüssigen Lösung vor dem nachfolgenden Aufbringen von Wasser durch ein Schaltventil bereitgestellt werden, um ein automatisches Umschalten vom Fließen der flüssigen Lösung zum Fließen des Wassers auszuführen, wobei das Schaltventil am Lagergefäß angeordnet ist, so dass das Schaltventil durch ein komprimiertes Gas betätigt wird, das verwendet wird, um die flüssige Lösung anzutreiben, und nachfolgend das Fließen von Wasser erlaubt, wenn der Druck einer Wasserversorgung den Druck des austreibenden Gases überschreitet.
  3. System nach Anspruch 1, wobei die Mittel zum Bewirken der Austragung der flüssigen Lösung vor dem nachfolgenden Aufbringen von Wasser durch ein Schaltventil bereitgestellt werden, um ein automatisches Umschalten vom Fließen der flüssigen Lösung zum Fließen des Wassers auszuführen, wobei das Schaltventil am Lagergefäß angeordnet ist, so dass das Schaltventil durch ein komprimiertes Gas betätigt wird, das verwendet wird, um die flüssige Lösung anzutreiben, und nachfolgend das Fließen von Wasser erlaubt, wenn der Druck einer Wasserversorgung den Druck des austreibenden Gases überschreitet, und wobei der Betätigungsdruck für das Ventil durch ein Rückschlagventil eingeschlossen ist, um das Schaltventil in der geöffneten Stellung zu halten, so lange bis ein ausreichender Druck durch eine optionale Auslassöffnung freigegeben wird, damit sich das Ventil nach einer vorgeschriebenen Zeitdauer schließen kann.
  4. System nach Anspruch 1, wobei die Mittel zum Bewirken der Austragung der flüssigen Lösung vor dem nachfolgenden Aufbringen von Wasser durch ein automatisches Schaltventil bereitgestellt werden, um ein automatisches Umschalten des Fließens der flüssigen Lösung zum Fließen des Wassers auszuführen, wobei das automatische Schaltventil entfernt vom Lagergefäß des Mittels innerhalb der Verteilerrohrleitung angeordnet ist, wobei das Ventil durch den Druck des anfänglichen Flusses der flüssigen Salzlösung betätigt wird und nachfolgend das Fließen von Wasser erlaubt, wenn der Druck der Wasserversorgung den Druck innerhalb der Verteilerrohrleitung überschreitet.
  5. System nach Anspruch 1, wobei die flüssige Lösung in der Verteilerrohrleitung enthalten ist und durch die automatischen Spritzdüsen abgegeben wird, und wobei am Ende des Austrags der flüssigen Lösung das nachfolgende Aufbringen von Wasser automatisch durch dieselbe Verteilerrohrleitung und dieselben Spritzdüsen erfolgt.
  6. System nach Anspruch 1, wobei die flüssige Lösung ursprünglich in fester Form in wenigstens einem Lagerbehälter vorliegt und der Feststoff nachfolgend durch ein Fließen von Wasser aufgelöst wird, wobei das Fließen des nun in Wasser gelösten Feststoffes durch die Verteilerrohrleitung und Spritzdüsen erfolgt, wobei das Fließen des Wassers fortgesetzt wird, nachdem die aufgelöste Feststoff-Lösung verbraucht ist.
  7. System nach Anspruch 6, wobei sich der Feststoff in mehreren Lagerpatronen befindet, die direkt vor jeder Spritzdüse angeordnet sind.
EP98108720A 1997-05-16 1998-05-13 Feuerunterdrückungssystem Expired - Lifetime EP0878212B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US857546 1977-12-05
US85754697A 1997-05-16 1997-05-16

Publications (3)

Publication Number Publication Date
EP0878212A2 EP0878212A2 (de) 1998-11-18
EP0878212A3 EP0878212A3 (de) 1999-10-27
EP0878212B1 true EP0878212B1 (de) 2007-08-29

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EP98108720A Expired - Lifetime EP0878212B1 (de) 1997-05-16 1998-05-13 Feuerunterdrückungssystem

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EP (1) EP0878212B1 (de)
AT (1) ATE371476T1 (de)
CA (1) CA2233281C (de)
DE (2) DE19821530A1 (de)
DK (1) DK0878212T3 (de)
ES (1) ES2292195T3 (de)
FR (1) FR2763249B1 (de)
GB (1) GB2325159B (de)

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WO2003018137A1 (fr) * 2001-08-23 2003-03-06 Obtchestvo S Ogranichennoy Otvetctvennostiyu 'spb-Sredstva Pozharnoy Bezopasnosty' Dispositif pour module d'extinction des incendies à poudre
US6935433B2 (en) 2002-07-31 2005-08-30 The Boeing Company Helium gas total flood fire suppression system
RU2482924C1 (ru) * 2012-03-20 2013-05-27 Олег Савельевич Кочетов Установка пожаротушения водяной завесой
RU2537149C1 (ru) * 2014-02-12 2014-12-27 Открытое акционерное общество "Газпром" Способ предотвращения детонации горючей газовоздушной смеси в трубе и устройство для его осуществления
RU2577647C1 (ru) * 2015-02-06 2016-03-20 Олег Савельевич Кочетов Дренчерная система пожаротушения кочетова
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CN105457195A (zh) * 2016-02-01 2016-04-06 赵明洁 电力变压器灭火系统及控制方法
RU2611868C1 (ru) * 2016-03-14 2017-03-01 Олег Савельевич Кочетов Дренчер
RU2650128C1 (ru) * 2017-02-20 2018-04-09 Олег Савельевич Кочетов Распылитель для газоводяной системы пожаротушения
RU2644875C1 (ru) * 2017-03-13 2018-02-14 Олег Савельевич Кочетов Дренчер
RU2665396C1 (ru) * 2018-01-10 2018-08-29 Олег Савельевич Кочетов Дренчер
EP3894023A1 (de) 2018-12-12 2021-10-20 Carrier Corporation Küchenbrandunterdrückungssysteme und -verfahren
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US20240009492A1 (en) * 2022-07-05 2024-01-11 Carrier Corporation Restauarnt supression system with phased agent delivery

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US4356870A (en) 1980-11-18 1982-11-02 Gaylord Industries, Inc. Water spray fire protection for hoods over cooking units
JPH04856Y2 (de) * 1986-03-11 1992-01-13

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EP0878212A3 (de) 1999-10-27
ES2292195T3 (es) 2008-03-01
CA2233281A1 (en) 1998-11-16
GB9810611D0 (en) 1998-07-15
FR2763249A1 (fr) 1998-11-20
DK0878212T3 (da) 2007-12-03
GB2325159A (en) 1998-11-18
DE19821530A1 (de) 1998-11-19
DE69834289T2 (de) 2008-03-20
DE69834289D1 (de) 2008-01-24
EP0878212A2 (de) 1998-11-18
FR2763249B1 (fr) 2000-08-25
ATE371476T1 (de) 2007-09-15
CA2233281C (en) 2007-05-29
GB2325159B (en) 2001-02-28

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