JP6216319B2 - Liquid augmentation, gas generation fire extinguishing system and related methods - Google Patents

Description

  Embodiments of the present disclosure generally relate to fire fighting. Embodiments of the present disclosure relate to a fire extinguisher having a gas generator and a cooling system, and a method of using such a fire extinguisher to extinguish. Embodiments of the present disclosure also relate to a method of cooling a fire extinguishing gas using a liquid coolant.

In the past, halon halocarbons have found a wide range of uses related to fire fighting. The term “halon halocarbon” generally refers to a group of chemical compounds consisting of haloalkanes, or halogenoalkanes, alkanes with linked halogens, and specifically refers to bromine-containing haloalkanes. Halon halocarbons are generally effective in extinguishing most types of fires, desirably non-conductive, tend to dissipate rapidly without the formation of residue, limited human exposure There is a tendency to be relatively safe against (human exposure). In the past, halon halocarbons such as halocarbon halon 1301 (bromotrifluoromethane, CBrF ₃ ) have typically been used in areas or buildings, data and computer centers, museums, libraries, operating rooms, where water sprinkler systems are less suitable. And in or for areas where the application of water-based inhibitors can result in irreparable damage to electronic equipment, important document collection, etc. It was found to be useful as a fire extinguishing agent.

US Pat. No. 5,439,537 US Pat. No. 5,673,935 US Pat. No. 5,725,699 US Pat. No. 6,039,820

  However, halon halocarbons have been found to have a detrimental impact on the environment due to the manner of destroying the ozone layer with respect to the atmosphere.

  A fire extinguishing device is disclosed, the fire extinguishing device being configured to ignite at least a portion of the gas generating material to form a gas, and a housing in which the gas generating material is disposed. An igniter and a cooling system disposed adjacent to the housing. The cooling system includes a first chamber and a second chamber, and a coolant material is disposed in the first chamber. In operation, at least a portion of the coolant material flows from the first chamber into the second chamber and is mixed with the gas formed by ignition of the gas generating material to cool the gas. In some embodiments, the fire extinguishing device further includes a piston disposed in the first chamber of the cooling system, the piston being movable in the first chamber and pressurizing the coolant material. A coolant material is allowed to flow from the first chamber into the second chamber. The coolant material can be a liquid.

  A method for extinguishing a fire with a fire extinguisher is disclosed, the method comprising igniting a gas generating material to form a fire extinguishing gas and flowing the fire extinguishing gas into the first and second chambers of the cooling system. And flowing coolant material from the first chamber into the second chamber by moving the piston in the first chamber with a fire extinguishing gas. The coolant material can be mixed with the fire extinguishing gas to cool the fire extinguishing gas. It is possible to direct the mixture of coolant material and extinguishing gas towards the flame.

  A method for cooling the fire extinguishing gas is also disclosed, the method comprising flowing the fire extinguishing gas into the first and second chambers and pushing the piston with the fire extinguishing gas to Moving a piston operatively disposed therein, causing the coolant material to flow from the first chamber into the second chamber by pushing the coolant material with the piston; Mixing a coolant material and a fire extinguishing gas therein.

It is sectional drawing of the gas generator of the fire extinguishing apparatus by embodiment of this indication. FIG. 2 is a perspective sectional view of the gas generator shown in FIG. 1. FIG. 3 is a perspective cross-sectional view of a portion of the gas generator shown in FIG. 1, as viewed along line 3-3 as shown in FIG. It is sectional drawing of the cooling system of the fire extinguishing apparatus by embodiment of this indication. It is sectional drawing of the cooling system of the fire extinguishing apparatus by embodiment of this indication. It is sectional drawing of the cooling system of the fire extinguishing apparatus by embodiment of this indication. FIG. 6 is a cross-sectional view of a cooling system for a fire extinguishing apparatus according to another embodiment of the present disclosure. FIG. 6 is a cross-sectional view of a cooling system for a fire extinguishing apparatus according to another embodiment of the present disclosure. FIG. 6 is a cross-sectional view of a cooling system for a fire extinguishing apparatus according to another embodiment of the present disclosure. FIG. 6 is a cross-sectional view of a cooling system for a fire extinguishing apparatus according to yet another embodiment of the present disclosure. FIG. 6 is a cross-sectional view of a cooling system for a fire extinguishing device according to an additional embodiment of the present disclosure.

  1-8 illustrate a portion of an embodiment of a fire extinguishing device of the present disclosure. The fire extinguishing apparatus of the present disclosure includes a gas generator (see FIGS. 1 to 3) and a cooling system (see FIGS. 4A to 8) configured to cool the fire extinguishing gas generated by the gas generator. Including.

  FIG. 1 shows a cross-sectional view of an embodiment of a gas generator 20 of a fire extinguisher of the present disclosure. The gas generator 20 includes a generator housing 22, a first end wall 24 positioned at a first longitudinal end of the generator housing 22, and an opposite side of the first longitudinal end. And a second end wall 76 positioned at the second longitudinal end of the generator housing 22. The generator housing 22, the first end wall 24, and the second end wall 76 are made of a material that can withstand the elevated temperature and / or pressure generated during operation of the gas generator 20. Each can be formed. For example, the generator housing 22, the first end wall 24, and the second end wall 76 may be made of metal (eg, steel), polymer, composite material (eg, fiber composite material), and ceramic. Each can be formed from one or more. The first and second end walls 24, 76 can be formed integrally with the generator housing 22 or can be formed separately, for example, welding, adhesives, crimping, screws, machines It can be attached to the generator housing 22 by means of a typical fastener, press fit, or the like.

The gas generating material 52 can be disposed in the generator housing 22 for generating a gas (eg, a fire extinguishing gas). Materials that can be used as the gas generating material 52 include, for example, materials known in the art of inflatable vehicle occupant safety restraint systems (eg, airbag systems). Suitable compositions for the gas generating material 52 are known to those skilled in the art and can vary depending on the intended use of the generated gas. In particular, for use in fire extinguishing in areas where humans are present, the gas generating material 52 of the gas generating wafer 66 is disclosed in US Pat. Nos. 5,439,537, 5,673,935, 5, Hinshaw et al. 725,699, and 6,039,820, can be HACN compositions, the disclosure of each of these patents is incorporated herein by reference. Yes. The HACN used in gas generating material 52 can be recrystallized and contains approximately less than 0.1% activated carbon or activated carbon. By keeping the amount of carbon in the gas generating material 52 low, the amount of carbon-containing gas, such as CO, CO ₂ , or a mixture thereof, can be minimized when the gas generating material 52 burns. Is possible. Alternatively, it is possible to use technical grade HACN with up to approximately 1% activated carbon or activated carbon. It is also conceivable that it is also possible to use a conventional gas generating material for generating gaseous combustion products free of carbon-containing gas or NO _x.

HACN compositions or other gas generant materials 52 may include oxidants, ignition accelerators, ballistic modifiers, slag enhancing agents, coolants, chemical fire extinguishing agents, inorganic binders. Or additional ingredients, such as at least one of organic binders. By way of example, the HACN composition can include at least one of cupric oxide, titanium dioxide, guanidine nitrate, strontium nitrate, and glass. Many additives used in the gas generating material 52 have multiple purposes. By way of example only, an additive used as an oxidizing agent can provide the material 52 with cooling, ballistic conditioning, or slag promoting properties. Oxidizing agents can be used to drive the oxidation of activated carbon present in HACN or the oxidation of ammonia groups coordinated to cobalt in HACN. The oxidizing agent is ammonium nitrate, alkali metal nitrate, alkaline earth metal nitrate, ammonium perchlorate, alkali metal perchlorate, alkaline earth metal perchlorate, ammonium peroxide, alkali metal peroxide, or alkali. It can be an earth metal peroxide. Also, the oxidant is not limited thereto, but may be basic copper nitrate ([Cu ₂ (OH) ₃ NO ₃ ]) (“BCN”), Cu ₂ O, or a copper-based oxidant containing CuO, It can be a transition metal based oxidant. In addition to being an oxidizer, copper-based oxidizers can act as coolants, ballistic modifiers, or slag promoters. Upon combustion of the gas generant material 52, the copper-based oxidant produces a combustion product containing copper such as copper metal and cuprous oxide that can be mixed with cobalt combustion products such as cobalt metal and cuprous oxide. Is possible. These combustion products produce molten slag that melts at or near the combustion surface of wafer 66 and prevents the formation of particulates. Also, the copper-based oxidant can reduce the pressure index of the gas generating material 52 and reduce the pressure dependence of the combustion rate. Typically, gas generating materials containing HACN containing copper-based oxidants ignite more easily and burn more rapidly at or near atmospheric pressure. However, due to the lower pressure dependence, at extremely high pressures, such as pressures greater than approximately 20.69 MPa (3000 psi), they do not burn rapidly.

  The gas generating material 52 can be, by way of example, a solid material, which is formed as a wafer 66, which is generally cylindrical in shape. Each of the gas generating material 52 wafers 66 has one or more holes through the wafer 66 that, in operation, improve the ignition of the gas generating material 52 and the gas flow rate through the gas generator 20. It is possible to provide an increase. One or more wafers 66 of gas generating material 52 can be arranged in a stack, as shown in FIG. Each stack of wafers 66 can be at least partially disposed within the gas generating vessel 54. Each gas generating vessel 54 is generally cylindrical in shape and may contain perforations through the gas generating vessel 54 to improve gas flow rate and ignition of the gas generating material 52. A space 34 may be provided between each gas generating vessel 54 to allow gas to flow through the space 34 when the gas generator 20 is activated. Any number of gas generating containers 54 can be disposed in the generator housing 22. It is possible to modify the number of gas generating containers 54 and thus the amount of gas generating material 52 to adjust, for example, the amount of fire extinguishing provided, the cost of the fire extinguishing device, the weight of the extinguishing device, etc.

  Referring to FIG. 1 in conjunction with FIG. 2, the wafer 66 of gas generating material 52 can be held in a suitable position in the gas generating container 54, with a first end at one end of the gas generating container 54. One retainer disk 62 is provided, and a second retainer disk 64 is disposed on the opposite end of the gas generating container 54. The first and second retainer disks 62, 64 may include one or more of the first and second retainer disks 62, 64 to allow the flow of ignition products and / or gases therethrough. Each may have an opening. Optionally, additional retainer disks (not shown) can be disposed between each wafer 66 of gas generating material 52.

  1-3, the first retainer plate 48 can be positioned in the generator housing 22 proximate to the first end wall 24 and the second The retainer plate 70 can be positioned in the generator housing 22 proximate to the second end wall 76. The first and second retainer plates 48, 70 can be configured to hold the gas generating container 54 in an appropriate position within the housing 22 of the gas generator 20. The first retainer plate 48 can include a recess 36 in which the ignition material 50 can be disposed. The first retainer plate 48 includes a hole 44 therethrough to allow ignition products to pass through the first retainer plate 48 to ignite the gas generant material 52 upon operation of the gas generator 20. can do. Activation of the gas generator 20 can occur through activation of the igniter 72, which is positioned proximate to the first end wall 24 and proximate to at least a portion of the igniter material 50. It is positioned as. As an example, the igniter 72 can be, for example, an electronic igniter configured to ignite when a fire alarm is activated. Thus, when the igniter 72 is activated, the ignition material 50 is ignited, and as a result, the gas generating material 52 is ignited and burned, generating a fire extinguishing gas. In other words, the gas generant material 52 can react to form a fire extinguishing gas when in contact with the ignition product of the ignition material 50.

  Referring again to FIG. 1, the second end wall 76 to allow the fire extinguishing gas generated by the gas generating material 52 to flow through the opening 78 and out of the gas generator 20. May include an opening 78. A barrier 81 can be positioned above the opening 78 in the second end wall 76 to prevent the passage of material through the opening 78 before the gas generator 20 is activated. The pressure in the generator 20 can be increased, and the combustion of the gas generating material 52 is self-supporting. The barrier 81 can be a pressure sensitive barrier and is configured to rupture when sufficient pressure is applied to it, thus generating gas that burns when the gas generator 20 is activated. The fire extinguishing gas generated by the material 52 is allowed to pass through the opening 78. By way of example, the barrier 81 can be a foil band or tape and can be selected to rupture at a predetermined pressure above the atmospheric pressure outside the gas generator 20.

  1-3, a specific embodiment of the gas generator 20 is shown, but the present disclosure is not limited thereto. As an example, any source of fire extinguishing gas or other fire extinguishing material may be required to remove heat from the fire extinguishing material stream for a particular application and is used with the cooling system of the present disclosure It is possible.

  As can be seen from FIG. 1, the gas generator 20 can be coupled to a cooling system, such as the cooling system 100 (FIGS. 4A-4C) described in more detail below. Optionally, the connecting element 30 can be disposed between the gas generator 20 and the cooling system 100. In other embodiments, the cooling system 100 can be directly connected to the gas generator 20 by welding, crimping, press fitting, screws, adhesives, mechanical fasteners, and the like. Accordingly, the fire extinguishing gas generated by the gas generator 20 passes through the opening 78 in the second end wall 76 of the gas generator 20 and is described in more detail below. It is possible to go inside.

  Although the illustrations of FIGS. 4A-8 do not show a gas generator, a gas generator such as that described above can be positioned adjacent to the cooling system of FIGS. 4A-8, depending on the gas generator. It should be understood that the fire extinguishing gas that is generated and exits the gas generator can be cooled by the cooling system. For example, when viewed from the perspective of FIGS. 4A-8, the gas generator 20 described above can be attached to any of the cooling systems of FIGS. 4A-8 at the bottom of the cooling system. Thus, as will be described in more detail below, the gas exits the gas generator 20 through the opening 78 and is one of the cooling systems 100, 200, 300, 400, 500. It is possible to enter and flow through it and be cooled.

  Referring now to FIG. 4A, a fire extinguisher cooling system 100 is shown and described. The cooling system 100 can include a first chamber 110 that is at least partially defined by a first housing 132. The first chamber 110 includes a piston 112 that is disposed within the first chamber 110 and when a sufficient force (eg, pressure) is applied against the piston 112, the first chamber 110. It is configured to move through. One or more seals 114 (eg, O-rings) can be disposed between the piston 112 and the first housing 132 to prevent fluid communication around the piston 112. A coolant material 130 can be disposed in the first chamber 110. The coolant material 130 can be supplied into the first chamber 110, for example, through the fill port 118. The coolant material 130 can be in liquid form, at least prior to operation of the cooling system 100. However, as described in more detail below, during operation of the cooling system 100, at least a portion of the coolant material 130 may evaporate to form a gaseous material. During operation, the coolant material 130 can flow out of the first chamber 110 through the nozzle 116. The nozzle 116 can be covered or closed by a pressure sensitive barrier 117 such as a foil, as described above with reference to the barrier 81 of FIG.

  The cooling system 100 can include a second chamber 120 that is at least partially defined by a second housing 122. Optionally, the second housing 122 can include a flange 123 for connection to the gas generator 20. A plate 124 with at least one opening 126 therethrough can be disposed in the second housing 122. The second housing 122 can include at least one opening 140 for discharging fire extinguishing gas therethrough to extinguish the flame.

  4B and 4C illustrate the cooling system 100 in an operational state. When the fire extinguishing gas is generated by the gas generator 20 (FIGS. 1 to 3) connected to the cooling system 100, the fire extinguishing gas may leave the housing 22 and flow into the cooling system 100. Is possible. The fire extinguishing gas can flow to the structure in the form of a plate 124, increasing the pressure of the fire extinguishing gas exiting the housing 22 upstream of the plate 124. Such increased pressure can be effectively exerted by the coolant material 130 in the first chamber 110 through the piston 112. In other words, the pressure of the fire extinguishing gas can push the piston 112 in the first chamber 110, moving the piston 112 in the first chamber 110 and pushing the piston 112 against the coolant material 130. Accordingly, it is possible to adjust the size of the plate 124 and the corresponding opening 126 to produce sufficient pressure to move the piston 112. Due to the movement of the piston 112, the coolant material 130 can pressurize and break the barrier 117 (FIG. 4A) covering the nozzle 116, causing the coolant material to pass through the second of the cooling system 100. Flow into chamber 120. At least a portion of the fire extinguishing gas can flow through the at least one opening 126 in the plate 124 and into the second chamber 120. The coolant material 130 flowing through the nozzle 116 can be cooled in contact with the fire extinguishing gas flowing through the second chamber 120. Upon exiting the nozzle 116 and contacting the fire extinguishing gas, at least a portion of the coolant material 130 evaporates, depending on the material (eg, coolant material 130 and fire extinguishing gas) and associated conditions (eg, temperature, pressure, etc.). However, it can be mist or even substantially gaseous. Such a phase change can remove heat from the fire extinguishing gas and enhance its cooling. Accordingly, the combination of the fire extinguishing gas and the coolant material 130 (liquid form, gaseous form, at a reduced temperature compared to the temperature of the fire extinguishing gas exiting the gas generator 20 and entering the cooling system 100. Alternatively, a combination of liquid and gaseous forms) can be discharged from the cooling system 100 through the opening 140. Reduction of the temperature of the extinguishing gas can enhance its extinguishing and reduce or eliminate injuries to people (eg, burns) that may be in close proximity to the extinguishing system when the extinguishing system is activated Is possible.

  As can be seen from FIG. 4C, the piston 112 can continue to move through the first chamber 110 until the pressure of the extinguishing gas pushing the piston 112 is sufficiently reduced or substantially all The coolant material 130 flows into the second chamber 120 until the liquid coolant material 130 is pushed out of the first chamber 110.

  Various materials can be used as the coolant material 130. In one embodiment, the coolant material can include at least one endothermically alterable material. The endothermic changeable material can include a liquid that can evaporate and / or decompose upon contact with a fire extinguishing gas generated by ignition of the gas generating material 52, which can cool the fire extinguishing gas. It is.

  In some embodiments, the endothermic changeable material can endothermically decompose and / or evaporate to form additional gaseous products, and thus the resulting gaseous production. Increase the amount of things. Such an increase in the amount of gaseous product can reduce the amount of gas generant material 52 required for proper operation of the fire extinguishing device. By reducing the required amount of gas generating material 52, it is possible to reduce the size of the gas generator 20 of the fire extinguisher, thus reducing the cost and / or size of the fire extinguishing device and / or extinguishing the fire. Increase the fire fighting capability of the equipment.

Suitable coolant material 130 can include a liquid material that remains liquid at room temperature (eg, between about -35 ° C. and about 85 ° C.) where the fire extinguishing device can be operated. Moreover, any product formed from the coolant material 130 can be within acceptable spill limits associated with a particular fire fighting application. Also, the coolant material 130 is non-corrosive and can facilitate storage in the first chamber 110. Examples of coolant materials 130 that generally satisfy such criteria include water mixed with calcium chloride (CaCl ₂ ) and water mixed with propylene glycol.

  In addition to or as part of the coolant material 130, the first chamber 110 can include one or more active fire extinguishing compounds, where the active fire extinguishing compound is: Contacting a flame is generally useful for extinguishing the fire. Examples of chemically active fire extinguishing compounds that can be used include potassium acetate and alkali metal bicarbonates.

  For example, a 30 wt% aqueous potassium acetate solution reduces the amount of gas generating material 52 required and reduces the size and weight of the subject fire extinguisher generator housing 22 to the size of the first chamber 110, Alternatively, it can be reduced by about 40% compared to other similar devices without potassium acetate solution, with little change in any of the fire extinguishing capabilities of the fire extinguishing device.

  Another embodiment of a fire extinguisher cooling system 200 of the present disclosure is shown in FIG. The cooling system 200 of FIG. 5 is similar to the cooling system 100 shown in FIGS. 4A-4C, and includes a first chamber 110 defined at least partially by a first housing 132, and a second housing. A second chamber 120 defined at least in part by 122 and a piston 112 disposed in the first chamber 110 may be included. The first chamber 110 can be at least partially filled with a coolant material 130, and the coolant material 130 is supplied, for example, through a fill port 118. At least one seal 114 (eg, an O-ring) can be disposed around the piston 112 to prevent fluid flow around the piston 112. The second housing 122 has a flange 123 for connection to a gas generator (for example, the gas generator 20 described above), a plate 124 having at least one opening 126 therethrough, and discharges fire extinguishing gas therethrough. And an opening 140 for the purpose. However, the cooling system 200 includes one or more openings 216 that are positioned radially around the second housing 122 to inject the coolant material 130 into the second housing 122. This is different from the cooling system 100 of FIGS. 4A to 4C. One or more openings 216 may be covered by a pressure sensitive barrier 217 such as a foil band as described above with reference to barriers 81 and 117.

  The cooling system 200 is described with reference to FIGS. 4A-4B in that fire extinguishing gas entering the cooling system 200 can push the piston 112 and move the piston 112 in the first chamber 110. It is possible to operate in a manner similar to that described. Pressurized coolant material 130 can rupture barrier 217, and coolant material 130 flows into second chamber 120 through one or more openings 216 and is used as a fire extinguishing gas. Mixed with, making it possible to cool the fire extinguishing gas. However, the position of the one or more openings 216 in the radial direction around the second housing 122 may be mixed and cooled as compared to the position of the nozzles 116 shown in FIGS. 4A-4C. Modifications can be made possible.

  4A-5 illustrate an embodiment of a cooling system 100, 200 that includes a first chamber 110 that is at least partially defined by a first housing 132, and includes a first The housing 132 is positioned laterally adjacent to the second chamber 120, and the second chamber 120 is at least partially defined by the second housing 122, although the present disclosure is not limited thereto. . For example, the first chamber 110 can be at least partially disposed within the second housing 122 of the second chamber 120. As another example, the second chamber 120 can be at least partially disposed within the first housing 132. As yet another example, the first chamber 110 can at least partially surround the second chamber 120 laterally. Further exemplary embodiments of the presently disclosed cooling systems 300, 400, 500 are shown in FIGS. 6A-8 and are described in more detail below.

  Referring to FIG. 6A, the cooling system 300 can include a first chamber 310, which is at least partially defined by a first housing 332, A coolant material 130 is disposed therein. A second chamber 320 at least partially defined by the second housing 322 can be disposed at least partially within the first housing 332 and the first chamber 310. A piston 312 can be disposed within the first chamber 310, and the piston 312 can laterally surround a portion of the second housing 322 that defines the second chamber 320. One or more seals 314 (eg, O-rings) are disposed between the piston 312 and the first housing 332 and between the piston 312 and the second housing 322, and the piston 312 is disposed. It is possible to prevent fluid communication around. The first housing 332 can include a flange 323 for connection to a gas generator. A plate 324 with at least one opening 326 therethrough can be positioned in the second chamber 320. The second housing 322 includes one or more openings 316 and can provide fluid communication between the first and second chambers 310, 320 through the one or more openings 316. . The one or more openings 316 are covered by a pressure sensitive barrier 317 such as a foil band to prevent fluid communication through the one or more openings 316 when the cooling system 300 is not operating. It is possible.

  As can be seen from FIGS. 6A and 6B, when the fire extinguishing gas is introduced to the bottom of the cooling system 300 (when viewed from the perspective of FIGS. 6A and 6B), the fire extinguishing gas pushes the piston 312 and causes the piston 312 to move. It can be moved through the first chamber 310. At least some of the fire extinguishing gas can flow into the second chamber 320 through one or more openings 326 in the plate 324. The movement of the piston 312 ruptures the barrier 317 by the coolant material 130 and causes the coolant material 130 to flow into the second chamber 320 and mix with the fire extinguishing gas flowing through the second chamber 320 to cool the fire extinguishing gas. Is possible. Therefore, as described above, the fire extinguishing gas can be cooled by the coolant material 130 before and / or after being discharged from the cooling system 300.

  FIG. 7 illustrates another embodiment of a fire extinguishing device cooling system 400 of the present disclosure. The cooling system 400 shown in FIG. 7 is similar to the cooling system 300 shown in FIGS. 6A-6B and includes a first chamber 310 that is at least partially defined by a first housing 332. The first housing 332 at least partially surrounds the second chamber 320 laterally, and the second chamber 320 is at least partially defined by the second housing 322. A coolant material 130 can be disposed in the first chamber 310. One or more openings 316 may extend through the second housing 322 and provide fluid communication between the first and second chambers 310, 320. As described above, the barrier 317 can cover one or more openings 316. A plate 324 with at least one opening 326 therethrough can be positioned in the second chamber 320. However, the cooling system 400 does not include a piston. More precisely, the cooling system 400 can include one or more additional openings 406 that pass through the second housing 322. Covered by another barrier 407, which is similar to the barriers 81, 117, 217, 317 described above. One or more additional openings 406 can be positioned in the flow path in front of the plate 324, and the fire extinguishing gas flowing through the cooling system 400 can rupture another barrier 407, causing the first chamber to It is possible to enter 310, pressurize the first chamber 310, cause the coolant material 130 to rupture the barrier 317, and allow the coolant material 130 to flow into the second chamber 320 through the opening 316. Accordingly, the coolant material 130 can be mixed with the fire extinguishing gas flowing through the second chamber 320 before being discharged from the cooling system 400, as described above, to cool the fire extinguishing gas.

  FIG. 8 illustrates another embodiment of a cooling system 500 for a fire extinguisher according to the present disclosure. The cooling system 500 shown in FIG. 8 is similar to the cooling system 300 shown in FIGS. 6A-6B and includes a first chamber 310 that is at least partially defined by a first housing 332. The first housing 332 at least partially surrounds the second chamber 320 laterally, and the second chamber 320 is at least partially defined by the second housing 322. A coolant material 130 can be disposed in the first chamber 310. One or more openings 316 extend through the second housing 322 and provide fluid communication between the first and second chambers 310, 320. As described above, the barrier 317 can cover one or more openings 316. A plate 324 with at least one opening 326 therethrough can be positioned in the second chamber 320. However, the cooling system 500 does not include a piston. More precisely, the cooling system can include a perforated plate 508, which is the closest to the source of fire extinguishing gas (eg, gas generator 20 as described above). One chamber 310 is disposed at the end in the longitudinal direction. The perforated portion of the perforated plate 508 can be referred to as at least one additional opening. An additional barrier 507 similar to the barriers 81, 117, 217, 317, 407 described above can cover the perforated plate 508. Fire extinguishing gas flowing through the cooling system 500 can rupture the additional barrier 507 and enter the first chamber 310 through the perforated plate 508. The fire extinguishing gas can pressurize the first chamber 310, cause the coolant material 130 to rupture the barrier 317, and allow the coolant material 130 to flow into the second chamber 320 through the opening 316. Accordingly, the coolant material 130 can be mixed with the fire extinguishing material flowing through the second chamber 320 before being discharged from the cooling system 500, as described above, to cool the fire extinguishing material.

  The present disclosure includes a method for cooling a fire extinguishing gas. A fire extinguishing gas can flow into the first chamber and the second chamber of the cooling system. The first chamber and the second chamber can be close to each other. The fire extinguishing gas can push the piston in the first chamber and move the piston, causing the coolant material in the first chamber to flow from the first chamber into the second chamber. The coolant material can be mixed with the fire extinguishing gas in the second chamber to cool the fire extinguishing gas. The cooling of the fire extinguishing gas can occur as described above with reference to any of FIGS.

  The present disclosure also includes a method for extinguishing a fire. Such a method can include generating a fire extinguishing gas with the gas generating material and cooling the fire extinguishing gas, as described above. It is possible to cool the fire extinguishing gas by flowing the fire extinguishing gas through the cooling system. The fire extinguishing gas can cause the coolant material to flow from the first chamber into the second chamber and be mixed with the fire extinguishing gas to cool the fire extinguishing gas. In some embodiments, the fire extinguishing gas can move the piston in the first chamber, pressurize the coolant material, and allow the coolant material to flow through the nozzle or opening into the second chamber. is there. After mixing of the coolant material and the fire extinguishing gas, the resulting mixture can be discharged from the second chamber. It is possible to direct the mixture towards the flame and / or to discharge the mixture into the space where the flame is present and extinguish it. As described above with reference to FIGS. 1-3, a fire extinguishing gas can be generated. The fire extinguishing gas can be cooled as described above with reference to any of FIGS. 4A-8.

  While this disclosure is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and have been described in detail herein. However, this disclosure is not intended to be limited to the particular forms disclosed. More precisely, this disclosure includes all modifications, combinations, equivalents, and the like that fall within the scope of the invention as defined by the following appended claims and their legal equivalents: Alternative examples are included.

Claims (15)

A housing in which a gas generating solid material is disposed;
An igniter operably associated with at least a portion of the gas generating solid material , wherein the igniter is configured to ignite at least a portion of the gas generating solid material to form a fire extinguishing gas when activated. An igniter,
A cooling system disposed adjacent to and secured to the housing in which a gas generating solid material is disposed , the cooling system comprising:
A first housing defining a first chamber therein , wherein the first chamber is an end of the first housing opposite to the housing in which a gas generating solid material is disposed; Extending to the part, the first housing;
A second housing defining a second chamber therein, the second chamber having a structure for increasing the pressure in the first housing of fire extinguishing gas exiting the housing; and The second housing extending to an end of the first housing opposite to the housing in which the gas generating solid material is disposed ;
With
The first housing and the second housing each have a first opening adjacent to the housing in which a gas generating solid material is disposed, and the second housing The housing having at least one second opening covered by a pressure sensitive barrier from the first chamber to the second chamber, wherein the barrier has a gas generating solid material disposed therein. The first casing is adjacent to an end of the first casing opposite to the first casing, and the first casing is opposite to the first casing in which the gas generating solid material is disposed. A second opening extending through the end of the
The first chamber has a coolant material disposed therein, and the gas generating solid material operates in response to the pressure of the fire extinguishing gas exiting the housing disposed therein. , by the said from the inner surface of the first housing extends to the outer surface of the second housing, the first movably arranged piston in the chamber, at least a portion of the coolant material, the pressure The cooling system rupturing a sensitive barrier and flowing from the first chamber into the second chamber through the at least one second opening ;
With
The piston is movable relative to the first housing and the second housing in response to the pressure of the fire extinguishing gas exiting the housing in which the gas generating solid material is disposed. And
The casing, in which the gas generating solid material is disposed, the first casing, and the second casing are for a fire extinguishing gas formed when the gas generating solid material is ignited. Formed to provide a substantially axial flow path;
The substantially axial flow path extends substantially axially from the housing in which a gas generating solid material is disposed, and is substantially axially the first of the cooling system. Passes through the first opening to the housing and faces the piston, passes substantially through the first opening to the second housing of the cooling system in the axial direction and substantially in the axial direction. A fire extinguisher that exits the second housing of the cooling system through the second opening of the second housing. The fire extinguishing apparatus according to claim 1,
The piston further includes at least one sealing portion disposed between the piston and the first housing and between the piston and the second housing;
Between the piston and the first housing inner surface, and to prevent fluid flow between the piston and the second housing outer surface of the fire-extinguishing apparatus. The fire extinguishing apparatus according to claim 1,
Pressure generated by reaction of at least a portion of the gas generating solid material forming the fire extinguishing gas moves the piston relative to the first housing and the second housing, and at least a portion of the coolant material. A fire extinguishing device that functions to flow the gas from the first chamber into the second chamber. The fire extinguishing apparatus according to claim 1,
A fire extinguishing apparatus, wherein the coolant material comprises at least one endothermic changeable material. The fire extinguishing apparatus according to claim 4,
A fire extinguishing apparatus, wherein the endothermic changeable material includes a liquid that performs at least one of evaporation and decomposition when in contact with the gas formed by ignition of the gas generating solid material . The fire extinguishing apparatus according to claim 5,
A fire extinguishing device, wherein the endothermic changeable material forms an additional gas product when in contact with the gas formed by the ignition of the gas generating solid material . The fire extinguishing apparatus according to claim 4,
A fire extinguishing apparatus wherein the endothermic changeable material comprises water. The fire extinguishing apparatus according to claim 7,
The fire extinguishing apparatus, wherein the endothermic changeable material further comprises at least one of calcium chloride, propylene glycol, potassium acetate, and alkali metal bicarbonate. The fire extinguishing apparatus according to claim 1 ,
The fire extinguishing apparatus, wherein the structure includes a plate having at least one opening therethrough. The fire extinguishing apparatus according to claim 1,
The fire extinguishing apparatus, wherein the first chamber is positioned laterally adjacent to the second chamber. The fire extinguishing apparatus according to claim 1,
The fire extinguishing apparatus, wherein the first chamber at least partially surrounds the second chamber laterally. A method for extinguishing a fire with a fire extinguishing device,
Igniting the gas generating solid material in the gas generating housing to form a fire extinguishing gas;
A first chamber defined by a first housing of a cooling system fixed at an end thereof to the gas generating housing substantially axially from the gas generating housing and a second housing of the cooling system Flowing the fire extinguishing gas into a defined second chamber , wherein the second housing comprises a plate in the second chamber, the plate having at least one opening through the plate. The opening increases the pressure of the fire extinguishing gas flowing into the first chamber, the second casing extends to the opposite end of the first casing, and the second chamber Extending through the opposite end of the first housing; and
In response to the pressure of the fire extinguishing gas, the inner surface of the first housing and the outer surface of the second housing are substantially axially along the surfaces in the first chamber. by moving the piston disposed on an end portion of the first body to the opposite end of the first housing, wherein the cooling material from the first chamber of the cooling system to the second chamber Flowing through one or more openings in the wall of the second housing adjacent to the opposite end of the first housing to rupture a pressure sensitive barrier covering the one or more openings. The piston is fully contained in the first chamber through its movement in the first chamber; and
Contacting the fire extinguishing gas with the coolant material in the second housing to cool the fire extinguishing gas;
Flowing the combination of the fire extinguishing gas and the coolant material from the second housing through the opposite end of the first housing in the substantially axial direction;
Including a method. The method of claim 12 , wherein
The method further comprising directing a combination of the fire extinguishing gas and the coolant material toward a flame. The method of claim 12 , wherein
The method wherein the inflow of coolant material comprises inflow of at least one of water, calcium chloride, propylene glycol, potassium acetate, alkali metal bicarbonate, and combinations thereof. The fire extinguishing apparatus according to claim 1,
The at least one second opening of the second housing of the cooling system is configured to direct the flow of the coolant material from the first chamber into the second chamber. A fire extinguishing apparatus comprising at least one opening disposed around the chamber.

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