A mobile compressed air gun composite fire extinguishing device capable of long-distance extinguishment and a fire extinguishing system using the compressed air gun composite fire extinguishing device

Abstract

The present invention relates to a portable foam fire extinguisher capable of close-range fire suppression by discharging air foam, which allows for easy portability and close-range extinguishing of fires, thereby enabling rapid fire suppression. More specifically, the invention relates to a novel type of portable foam fire extinguisher capable of close-range fire suppression in which a nitrogen gas tank is integrally formed on one side of an agent tank containing a small amount of extinguishing agent, a pressure reducing valve capable of spraying nitrogen gas at a set pressure is formed, and a mixing stick is used to induce stable mixing of the extinguishing agent and nitrogen gas. Furthermore, by utilizing a multi-stage connecting pipe, the extinguisher can be easily moved and the spray nozzle can be positioned as close as possible to the source of the fire, thereby facilitating rapid initial fire suppression. Additionally, by spraying a foam-type extinguishing agent to suppress the fire, the fire can be extinguished in the fire zone through suffocation and cooling effects using the extinguishing foam, thereby significantly enhancing the fire suppression effect.

Description

Technology Field

[0001] The present invention relates to a portable compressed air foam composite fire extinguishing device capable of long-distance fire suppression and a fire suppression system utilizing said compressed air foam composite fire extinguishing device. More specifically, the invention provides a new type of long-distance fire suppression device that allows for safe fire suppression by making the fire extinguisher easy to carry and extinguishing the fire from a location far from the point of ignition, while enabling rapid fire suppression by spraying the extinguishing agent through a rapid connection via a male-female coupler structure. Furthermore, it features a pressure reducing valve with significantly reduced weight, which simplifies the structure to spray internal gas at a set pressure from a gas tank positioned on one side of an agent tank containing a small amount of extinguishing agent. Simultaneously, it utilizes a mixing stick to induce stable mixing of the extinguishing agent and gas, facilitates the movement of the fire extinguisher using a multi-stage connecting pipe, and allows the spray nozzle to be positioned as close as possible to the origin of the fire, thereby facilitating rapid initial fire suppression. Additionally, by spraying a foam-type extinguishing agent to suppress the fire, the fire can be extinguished in the fire zone through suffocation and cooling effects using the extinguishing foam, thereby greatly enhancing the fire suppression effect. This invention relates to a portable compressed air foam composite fire extinguishing device capable of extinguishing fires and a fire extinguishing system using the said compressed air foam composite fire extinguishing device. Background Technology

[0003] Generally, fire extinguishers are devices placed in buildings, vehicles, ships, etc., and used for initial fire suppression in the event of a fire. Typically, it takes some time for fire trucks to arrive after a fire breaks out, and during that time, small embers can turn into a fire and develop into a large-scale blaze; therefore, the flames must be contained in the early stages. Accordingly, fire extinguishers should be placed in locations where a fire could cause casualties, such as buildings, vehicles, and ships, to ensure that fires can be suppressed in their early stages.

[0004] In particular, recently, foam fire extinguishing systems have been installed in parts of buildings, vehicles, or ships that are vulnerable to fire, providing a system that rapidly suppresses fires by suffocating the source of the fire with foam when a fire occurs.

[0005] Regarding prior art related to a type of technology for extinguishing fire using foam as described above, Patent Registration No. 10-1402520 (Registration Date: May 26, 2014), a foam fire extinguishing liquid mixing and spraying device is composed of a straight main pipe connected to a pump installed in a water tank and a sub-pipe that bypasses and joins the main pipe. The main pipe is formed with a water inlet section at one end through which water from the pump is supplied and moved, a foam fire extinguishing liquid inlet section in the middle, a discharge section for a mixture of water and foam fire extinguishing liquid at the other end, and a backflow prevention check valve formed between the foam fire extinguishing liquid inlet section and the mixture discharge section. The sub-pipe is formed such that water bypasses the water between the water inlet section and the foam fire extinguishing liquid inlet section on the main pipe, and water joins the foam fire extinguishing liquid between the foam fire extinguishing liquid inlet section and the backflow prevention check valve. A water flow control valve for regulating the water flow rate is provided in the middle section, and one end of a hose at the mixture discharge section A hose is connected, and a spray nozzle is connected to the other side of the hose. The spray nozzle is characterized by having a vertical step formed in the middle of a through-path formed on the inside, where a moving mixture collides and is crushed, and a plurality of air inlet holes are formed on the front or rear side of the vertical step on the through-path to communicate with the outside and allow air to flow in, thereby generating foam in the mixture. A mixture diffusion member is provided at the discharge end of the spray nozzle, and the rear side located inside the through-path of the spray nozzle is formed in a conical shape with its apex facing backward.

[0006] Another prior art foam fire extinguishing system, Patent Registration No. 10-1052260 (Registration Date: July 21, 2011), is a foam fire extinguishing system in which an agent mixing device that mixes an agent with general fire extinguishing water to produce foam fire extinguishing water and supplies it is installed on a foam fire extinguishing line extended from a fire pump. The agent mixing device comprises an agent storage tank, an agent transfer line extended from the agent storage tank, an agent mixing pipe installed on the foam fire extinguishing line and connected to a siphon pipe branched from the agent transfer line, and a backflow prevention valve installed on the agent transfer line. A cleaning line branched from the foam fire extinguishing line and supplied general fire extinguishing water is connected to the agent transfer line to clean the agent remaining in the agent transfer line. A discharge valve for discharging wastewater generated after cleaning is installed adjacent to the outlet side of the agent mixing pipe on the foam fire extinguishing line, and a cleaning cap is installed at the end of the agent transfer line to check the cleaning state after cleaning.

[0007] However, the configuration for spraying foam extinguishing liquid as described above consists of complex and large components such as an agent storage tank, agent mixing pipe, agent transfer line, and backflow prevention valve. Generally, fire extinguishing devices using foam extinguishing agents are installed in the interior spaces of buildings or within machinery to suppress fires by filling the fire-prone area with foam to utilize a suffocating effect; this configuration incurs high installation costs and presents the problem of requiring a space to install such a complex foam extinguishing system.

[0008] Due to the structural problems mentioned above, it is generally difficult to apply this method to small, portable fire extinguishing equipment. Furthermore, since the fire is suppressed by filling the entire space where the fire occurred—such as the interior of a building or device—with foam, it is difficult to expect the effect of minimizing damage caused by the fire by concentrating the spray on the source of ignition. Prior art literature

[0010] Registered Patent Publication No. 10-1402520 (Registration Date: May 26, 2014) "Foam Fire Extinguishing Liquid Mixing and Spraying Device" Registered Patent Publication No. 10-1052260 (Registration Date: July 21, 2011) "Foam Fire Extinguishing Equipment" The problem to be solved

[0011] The present invention aims to solve the problems described above, and the objective of the present invention is to provide a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression and a fire extinguishing system using said compressed air foam composite fire extinguishing device, which enables rapid fire suppression using suffocation and cooling effects by spraying a foam-type agent into a fire-affected area to suppress the fire, thereby minimizing casualties and property damage caused by the fire.

[0012] Another objective of the present invention is to provide a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression with rapid extinguishment, wherein the foam sprayed from the fire extinguishing device can be uniformly maintained at a set spray pressure, and in particular, the quality of the sprayed fire extinguishing foam is excellent because the gas discharged from the gas tank is mixed in a mixing stick and sprayed, and a fire suppression system using said compressed air foam composite fire extinguishing device.

[0013] Another objective of the present invention is to provide a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression that can ensure efficient initial response with a small amount of fire extinguishing agent by using a multi-stage connecting pipe in which a plurality of extinguishing agents sprayed through a mixing stick are connected in multiple stages to bring the spray nozzle spraying the compressed air foam close to the ignition source.

[0014] Another objective of the present invention is to provide a portable compressed air foam composite fire extinguishing device capable of remote fire suppression that enables efficient initial fire suppression with a small amount of extinguishing agent by rapidly connecting a portable foam fire extinguisher to an electric vehicle and directly spraying fire extinguishing foam onto a battery module to suppress the fire through suffocation and cooling effects, and a fire extinguishing system using said portable compressed air foam composite fire extinguishing device.

[0015] Another objective of the present invention is to provide a portable compressed air foam composite fire extinguishing device capable of remote fire suppression that enables efficient initial fire suppression with a small amount of fire extinguishing agent by rapidly connecting a portable foam fire extinguisher to an internal combustion engine vehicle and spraying fire extinguishing foam directly onto the internal combustion engine to suppress the fire through suffocation and cooling effects, and a fire extinguishing system using the said portable compressed air foam composite fire extinguishing device.

[0016] Another objective of the present invention is to provide a portable compressed air foam composite fire extinguishing device capable of remote fire suppression and a fire suppression system using the said compressed air foam composite fire extinguishing device, which ensures stable spraying of the fire extinguishing agent by physically preventing the fire extinguishing agent from flowing backward due to internal pressure during the process in which the fire extinguishing agent sprayed from the portable foam fire extinguisher is injected into the case body housing the battery module, thereby allowing the air inside the case to be automatically and rapidly discharged.

[0017] The problems that the present invention aims to solve are not limited to the technical problems mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0019] A mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the present invention for achieving the above objective can be achieved by a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression, characterized by comprising: a tank section composed of a fire extinguishing device containing a fire extinguishing agent and a gas tank containing gas; a pressure reducing valve formed in the gas discharge line of the gas tank to provide a uniform discharge pressure of the discharged gas; a mixing stick in which the fire extinguishing agent discharged from the fire extinguishing device and the nitrogen gas discharged from the gas tank are mixed and a valve is formed in the central part; a multi-stage connecting pipe formed by connecting a plurality of unit connecting pipes in a one-touch manner to move the fire extinguishing agent mixed through the mixing stick to the location of the fire; and a spray nozzle in which one end is connected to the multi-stage connecting pipe in a one-touch manner and the agent is sprayed on the other end.

[0020] In another embodiment, a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to one embodiment of the technical concept of the present invention can be achieved by a tank section comprising a fire extinguishing device containing a fire extinguishing agent and a gas tank containing gas; a pressure reducing valve formed in the gas discharge line of the gas tank to provide a uniform discharge pressure of the discharged gas; a mixing stick in which the fire extinguishing agent discharged from the fire extinguishing device and the nitrogen gas discharged from the gas tank are mixed and a valve is formed in the central part; a multi-stage connecting pipe formed by connecting a plurality of unit connecting pipes in a one-touch manner to move the fire extinguishing agent mixed through the mixing stick to the location of the fire; and a spray nozzle formed by connecting one end to the multi-stage connecting pipe in a one-touch manner and connecting a plug to the other end for connecting the fire extinguishing agent to a battery case formed in a vehicle.

[0021] The above pressure reducing valve is characterized by comprising: a main body integrally formed with an inlet port for gas inflow on one side and an outlet port on the other side, and a movable port formed in alignment with a guide groove and formed to open and close by the operation of a piston in the central part; a piston formed in a manner capable of vertical movement within the guide groove of the main body, having a disc at the bottom that seals the lower part of the movable port, a pressure plate at the top, and a sealing plate at the central part to guide vertical movement; a cover formed in a detachable manner on the upper part of the main body, in which an elastic body is accommodated with the pressure plate in close contact with the top; and a packing at the connection part between the main body and the cover to provide airtightness of the connection part.

[0022] The above-described spray nozzle is characterized by comprising: a spray tube having a tubular shape with an internal penetration, having a female screw hole formed on one side and a socket formed on the other side for connecting to a multi-stage connecting tube in a one-touch manner; a nozzle body having an assembly screw part on one side that is screw-fastened to the female screw hole, a screw hole formed on the other side inclined toward one side, and a passage space formed inside through which a fire extinguishing agent passes; and a nozzle having a male screw part formed to be screw-fastened to the screw hole, a spray hole formed in the central part communicating with the passage space, and a tool assembly surface and a spray protrusion formed integrally on the outer side that are assembled to an assembly tool.

[0023] In another embodiment of the above-described spray nozzle, the spray nozzle is characterized by comprising: a spray tube having a tubular shape with an internal opening, having a female screw hole formed on one side and a socket formed on the other side for connecting to a multi-stage connecting tube in a one-touch manner; a nozzle body having an assembly screw part on one side that is screwed into the female screw hole, a screw hole formed on the other side inclined toward one side, and a passage space formed inside through which a fire extinguishing agent passes; a nozzle having a male screw part formed into the screw hole, a spray hole formed in the central part that communicates with the passage space and is inclined in a shape that narrows toward the outside, with a stopper formed at both ends, a cone-shaped spring inserted into the spray hole, and a tool assembly surface and a spray protrusion formed integrally on the outside that are assembled to an assembly tool.

[0024] The battery case is characterized by comprising an upper case in the form of a housing formed by a press processing method using a mold, a lower case, a connecting part formed in four directions (front, back, left, and right) of the lower case, and an agent inlet pipe that guides a fire extinguishing agent introduced from the outside into the battery case, with one side connected to the connecting part and the other side connected to a plug formed in a body including the front bumper, rear bumper, and fenders on both sides of the vehicle.

[0025] The above-described drug inlet pipe is characterized by having a plug formed on one side of a body including the front bumper, rear bumper, and fenders on both sides of a vehicle, and on the other side, a female connecting part having a female screw hole and a groove formed to be screw-connected to a connecting part formed in the lower case, with a packing formed inside, through which the drug inlet pipe passes and a flange formed at the end of the drug inlet pipe is caught on the inner surface of the female screw hole while the packing is fitted, so that when the female connecting part is coupled to the connecting part, even if the drug inlet pipe is positioned at an acute or obtuse angle, the female screw hole of the female connecting part guides the drug inlet pipe in a horizontal direction during the process of screw-connecting to the connecting part, thereby easily connecting the drug inlet pipe.

[0026] The above elastic body is characterized by being integrally formed of a plurality of elastic plates formed by being bent downward inward toward the inside of a main body having a conventional spring or circular ring shape to have elasticity.

[0027] The firefighting system using the compressed air foam composite firefighting device of the present invention is configured such that a fire truck plug having a diameter of 3 to 5 cm is installed on the front bumper and rear bumper of the vehicle, and the fire truck plug is connected to the battery case through a hollow tube, and a check valve that operates only in the inflow direction is installed at the connection part of the battery case, and a male plug connected to the female plug of the fire stick pipe connected to the fire hose of the fire truck or fire hydrant is installed, thereby enabling firefighters to quickly extinguish the fire in the battery case using the fire stick pipe. Effects of the invention

[0028] As described above, the mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the present invention and the fire extinguishing system using the compressed air foam composite fire extinguishing device have a capacity ranging from 5 kg to 150 kg for the agent tank filled with foam fire extinguishing agent and the gas tank filled with gas, and can be formed into a small size ranging from 5 kg to 15 kg for vehicle mounting or personal use at construction sites, or formed into a large size ranging from 15 kg to 150 kg for installation in parking lots or various manufacturing sites, or for installation in palaces, religious facilities, and construction sites, so they can be easily moved to the fire occurrence area, thereby enabling a rapid response to fire. In particular, the sprayed foam fire extinguishing agent is sprayed in a foam form by the simultaneously sprayed gas, and by covering the fire occurrence area with foam and suppressing the fire using suffocation and cooling effects, it has the effect of providing excellent fire extinguishing efficiency even when using a small amount of foam fire extinguishing agent.

[0029] In addition, the gas discharged through the gas tank can be injected at a uniform and stable pressure by means of a pressure reducing valve that discharges at a set pressure. By employing pressure reducing valves set to different injection pressures depending on the size of the agent tank and the gas tank, a uniform injection pressure matching the capacity of the tank section can be stably maintained, thereby effectively improving the quality of the foam actually injected.

[0030] In addition, the foam extinguishing agent and gas discharged through the agent tank and gas tank are mixed stably through the mixing stick without a drop in pressure, and in particular, the spray nozzle can be positioned close to the origin of the fire by means of multiple multi-stage connecting pipes connected to the mixing stick, so the spray position and direction of the agent can be accurately set even when using a small amount of foam extinguishing agent, allowing for precise spraying to the origin of the fire without wasting the agent, thereby ensuring efficient initial response even with a small amount of extinguishing agent.

[0031] In addition, by rapidly connecting the aforementioned mobile compressed air foam composite fire extinguishing device capable of long-distance extinguishing to an electric vehicle and directly spraying fire extinguishing foam onto the battery module to suppress the fire using suffocation and cooling effects, it is possible to achieve efficient initial fire suppression with a small amount of extinguishing agent.

[0032] In addition, the air inside the case body housing the battery module is automatically and rapidly discharged during the process in which the extinguishing agent sprayed from the aforementioned mobile compressed air foam composite extinguishing device capable of long-distance extinguishing is injected, thereby physically preventing the extinguishing agent from flowing back due to internal pressure during the spraying process and ensuring stable spraying of the extinguishing agent.

[0033] The effects of the present invention are not limited to those mentioned above, and various effects may be included within the scope obvious to a person skilled in the art from the contents described below. Brief explanation of the drawing

[0034] FIG. 1 is a schematic diagram of a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of a pressure reducing valve portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the first embodiment of the present invention. FIG. 3 is a perspective view of another embodiment of the elastic body of the pressure reducing valve portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the first embodiment of the present invention. FIG. 4 is a cross-sectional view of another embodiment of the pressure reducing valve portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the first embodiment of the present invention. FIG. 5 is a perspective view of a spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the first embodiment of the present invention. FIG. 6 is an exploded perspective view of the spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment of the present invention. FIG. 7 is a cross-sectional view of the spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment of the present invention. FIG. 8 is a cross-sectional view of a modified embodiment of the spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment of the present invention. FIG. 9 is a diagram showing the usage state of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention. FIG. 10 is a perspective view of another embodiment of a spray nozzle among a portable foam fire extinguisher capable of close-range fire suppression according to the first embodiment of the present invention. FIG. 11 is a drawing showing a configuration in which a modified spray nozzle of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention is connected to a vehicle plug. FIG. 12 is a perspective view of a battery case to which a modified spray nozzle is connected, of a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment of the present invention. FIG. 13 is a cross-sectional view of a battery case to which a modified spray nozzle is connected, of a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment of the present invention. FIG. 14 is a perspective view of a modified spray nozzle and a plug in a separated state among a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the first embodiment of the present invention. FIG. 15 is a cross-sectional view of the socket and plug of a modified spray nozzle in a separated state among a portable foam fire extinguisher capable of close-range fire suppression according to the first embodiment of the present invention. FIG. 16 is a cross-sectional view of the combined state of the socket and plug of a modified spray nozzle in a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment of the present invention. FIG. 17 is a drawing showing the connection form between the battery case and the agent inlet pipe of a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the first embodiment of the present invention. FIG. 18 is a schematic bottom view of a vehicle having a battery case installed that is connected to the socket of a modified spray nozzle among a mobile compressed air foam composite fire extinguishing device capable of long-distance fire suppression according to the first embodiment of the present invention. FIG. 19 is a perspective view of another embodiment of a battery case to which a modified spray nozzle is connected, among a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the first embodiment of the present invention. FIG. 20 is a plan view of another embodiment of the modified battery case of the present invention. FIG. 21 is a schematic front view of a firefighting stick connected to the battery case of FIG. 20. Specific details for implementing the invention

[0035] Below, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, since the description of the present invention is merely an example for structural or functional explanation, the scope of the rights of the present invention should not be interpreted as being limited by the embodiments described in the text.

[0036] That is, since the embodiments are capable of various modifications and may take various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical concept. Furthermore, the objectives or effects presented in the present invention do not imply that a specific embodiment must include all of them or only such effects; therefore, the scope of the present invention should not be understood as being limited by them.

[0037] Meanwhile, the meaning of the terms described in this invention should be understood as follows.

[0038] Terms such as "first," "second," etc., are intended to distinguish one component from another, and the scope of rights shall not be limited by these terms.

[0039] For example, the first component may be named the second component, and similarly, the second component may also be named the first component.

[0040] When it is stated that one component is "connected" to another component, it should be understood that it may be directly connected to that other component, or that there may be other components in between. Conversely, when it is stated that one component is "directly connected" to another component, it should be understood that there are no other components in between. Meanwhile, other expressions describing the relationships between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way.

[0041] A singular expression should be understood to include a plural expression unless the context clearly indicates otherwise, and terms such as "include" or "have" are intended to specify the existence of the set-up features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood not to preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0042] Unless otherwise defined, all terms used herein have the same meaning as generally understood by those skilled in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having meanings consistent with the context of the relevant technology and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined in this invention.

[0043] Now, a mobile compressed air foam composite fire extinguishing device capable of long-distance fire suppression according to the first embodiment of the present invention will be described in detail with reference to the drawings.

[0044] Among the attached drawings, FIG. 1 is a schematic diagram of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to a first embodiment of the present invention; FIG. 2 is a cross-sectional view of a pressure reducing valve portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to a first embodiment of the present invention; FIG. 3 is a perspective view of another embodiment of an elastic body of a pressure reducing valve portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to a first embodiment of the present invention; FIG. 4 is a cross-sectional view of another embodiment of a pressure reducing valve portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to a first embodiment of the present invention; FIG. 5 is a perspective view of a spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to a first embodiment of the present invention; FIG. 6 is an exploded perspective view of a spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to a first embodiment of the present invention; and FIG. 7 is the present invention FIG. 10 is a cross-sectional view of the spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 8 is a cross-sectional view of a modified embodiment of the spray nozzle portion of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 9 is a diagram showing the usage state of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 10 is a perspective view of another embodiment of the spray nozzle of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 11 is a diagram showing the form in which a modified spray nozzle of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention is connected to a vehicle plug; FIG. 12 is a perspective view of a battery case to which a modified spray nozzle of a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention is connected; and FIG. 13 is a diagram of the present invention This is a cross-sectional view of a battery case to which a modified spray nozzle is connected among a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment, andFIG. 14 is a perspective view of a deformed spray nozzle and a plug in a separated state in a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 15 is a cross-sectional view of a socket and a plug of a deformed spray nozzle in a separated state in a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 16 is a cross-sectional view of a socket and a plug of a deformed spray nozzle in a combined state in a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 17 is a drawing showing the connection form between a battery case and an agent inlet pipe in a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 18 is a schematic bottom view of a vehicle with a battery case installed that is connected to the socket of a deformed spray nozzle in a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression according to the first embodiment of the present invention; FIG. 19 is a diagram according to the first embodiment of the present invention This is a perspective view of another embodiment of a battery case to which a modified spray nozzle is connected, among a mobile compressed air foam composite fire extinguishing device capable of long-distance fire suppression.

[0045] The present invention relates to a mobile compressed air foam composite fire extinguishing device capable of remote fire suppression by discharging air foam, which allows for easy portability of the fire extinguisher and enables rapid fire suppression by assembling multi-stage connecting pipes that can be assembled from a distance to position a spray nozzle close to the point of ignition. More specifically, the invention relates to a novel type of mobile compressed air foam composite fire extinguishing device capable of remote fire suppression that can greatly enhance fire suppression effectiveness by extinguishing the fire in a fire zone through suffocation and cooling effects using foam-type extinguishing agents, thereby allowing the fire extinguisher to be easily moved and the spray nozzle to be positioned as close as possible to the point of origin of the fire by utilizing multi-stage connecting pipes, and by suppressing the fire by spraying foam-type extinguishing agents, thereby suppressing the fire by discharging the fire-type agent.

[0046] Specifically, the mobile compressed air foam composite fire extinguishing device (hereinafter referred to as "mobile compressed air foam fire extinguisher") (100) capable of remote fire extinguishing according to the present invention comprises a tank section (10) composed of a fire extinguishing device (11) filled with a fire extinguishing agent and a gas tank (12) filled with nitrogen gas, a pressure reducing valve (20) for controlling the discharge pressure of nitrogen gas discharged from the gas tank (12), a mixing stick (30) for mixing the discharged fire extinguishing agent and nitrogen gas, a plurality of multi-stage connecting pipes (40) connected to one end of the mixing stick (30) and extending a spray nozzle (50) to the location of the fire, and a spray nozzle (50) connected to the end of the multi-stage connecting pipe (40) and spraying fire extinguishing foam.

[0047] The above tank section (10) is configured to include a fire extinguishing device (11) containing a conventional fire extinguisher filled with a fire extinguishing agent inside, and a gas tank (12) filled with nitrogen gas inside.

[0048] In addition, the gas tank (12) has a capacity ranging from 5 kg to 150 kg, and can be formed into a small size ranging from 5 kg to 15 kg for vehicle mounting or personal use at construction sites, or formed into a large size ranging from 15 kg to 150 kg for installation in parking lots or various manufacturing sites, or installed in palaces, religious facilities, and construction sites, so it can be easily moved to a fire-prone area and has the characteristic of enabling rapid fire response.

[0049] In addition, a pressure reducing valve (20) is formed in the gas discharge line of the gas tank (12) to uniformly discharge the discharge pressure of the discharged gas to a set pressure.

[0050] As shown in FIG. 2, the above pressure reducing valve (20) comprises a main body (21) having an inlet hole (211) for gas to be introduced on one side and an outlet hole (212) on the other side formed integrally, and a moving hole (214) formed in alignment with a guide groove (213) formed in the central part to be opened and closed by the operation of a piston (22); a piston (22) formed in a form that can move up and down in the guide groove (213) of the main body (21) and has a disc (221) formed at the bottom end to seal the moving hole (214); and a cover (24) formed in a detachable form on the upper part of the main body (21) and containing an elastic body (23) inside.

[0051] In addition, a packing (25) is formed at the connection portion between the main body (21) and the cover (24) to provide airtightness of the connection portion.

[0052] Additionally, the lower part of the piston (22) is formed with a disc (221) that seals the moving hole (214), the upper part is formed with a pressure plate (222) that is in close contact with the upper part of the elastic body (23), and the central part is formed with a sealing plate (223) that is in close contact with the guide groove (213). By the pressure of the gas flowing in through the inlet hole (211), the disc (221) of the piston (22) and the pressure plate (222) overcome the elasticity of the elastic body (23) and descend, thereby opening the moving hole (214), so that the inlet hole (211) and the discharge hole (212) are connected, allowing the gas to move.

[0053] In addition, the pressure of the pressure reducing valve (20) can be easily applied to portable foam fire extinguishers (100) of various sizes, capacities, and pressures by replacing the elastic body (23) with an elastic body having different elasticity. In particular, the elastic body (23) can be easily applied to various portable foam fire extinguishers (100) by replacing it through a simple process of separating the cover (24) from the main body (21). Furthermore, the pressure reducing valve (20) can be formed in an overall slim and small form, which not only significantly reduces manufacturing costs but also has structural features that facilitate maintenance.

[0054] Meanwhile, the configuration of another embodiment of an elastic body in which the elastic body (23) is modified to be slimmer and smaller while maintaining the operation process of the above-mentioned pressure reducing valve (20) is illustrated in FIGS. 3 and 4.

[0055] As shown in FIGS. 3 and 4, the deformed elastic body (23') is formed by integrally forming a plurality of elastic plates (232') that are bent downward inward and formed to have elasticity into a main body (231') having a circular ring shape.

[0056] Due to the configuration of the elastic body (23') as described above, the pressure of the incoming gas causes the disc (221) of the piston (22) to descend while overcoming the elasticity of the elastic body (23'), thereby opening the moving hole (214), so that the inlet hole (211) and the outlet hole (212) are connected and the gas is moved.

[0057] As shown in FIG. 1, the above mixing stick (30) is composed of a hollow tube (34) in the shape of approximately "Y", and a first coupler (31) connected to a gas tank (12) and a second coupler (32) connected to a fire extinguishing device (11) are formed on one side of each hollow tube (34) of the mixing stick (30), and a third coupler (female plug) (33) connected to a multi-stage connecting tube (40) is installed on the other side, and a valve (35) for controlling the movement of gas and fire extinguishing liquid is integrally formed in the central part of the combined portion where gas and fire extinguishing agent gather.

[0058] The above mixing stick (30) can be used for three purposes, so that when using the extinguishing agent of the extinguishing device (11), the use of the gas tank (12) can be stopped and only the extinguishing agent can be used, when using the gas of the gas tank (12), only the gas can be used without using the extinguishing device (11), and when mixing the extinguishing agent of the extinguishing device and the gas of the gas tank, both the extinguishing device and the gas tank can be opened and used in a foam form.

[0059] In addition, a check valve (36) is formed in the part of the mixing stick (30) connected to the fire extinguishing device (11) or gas tank (12) to physically prevent backflow of the fire extinguishing agent or gas, thereby allowing the fire extinguishing agent or gas to be stably sprayed in the direction of the spray nozzle (50).

[0060] The above multi-stage connecting pipe (40) is configured such that a plurality of unit connecting pipes (44), each having a female plug (42) assembled on one side of a pipe (41) having a certain length and a male plug (43) connected on the other side, are connected to each other in a one-touch manner.

[0061] In this embodiment, the multi-stage connecting pipe (40) is composed of two connecting pipes (41) and one injection pipe (51), but is not limited thereto and the number of connecting pipes (41) may be increased.

[0062] Each of the above-mentioned connecting tubes (41) has a hollow connecting tube body (44) and a male plug (43) and a female plug (42) fixed to the end of the hollow connecting tube body (44). Accordingly, the male plug (43) at one end of the connecting tube (41) is easily snap-coupled to the female plug (33) of the mixing stick. And the female plug (42) at the other end of the connecting tube (41) is snap-coupled to the male plug (43) of another connecting tube (41). The snap coupling refers to the fact that when the male plug and the female plug are coupled, the female plug is inserted into the male plug, and the lock ring at the end of the male plug is inserted into the coupling groove at the end of the female plug to automatically couple them, and when released, the lock ring must be pulled out of the coupling groove to release the coupling.

[0063] The above injection tube (51) includes a hollow injection tube body (54) and a male plug (52) and a nozzle (53) each installed at the end of the injection tube body (54).

[0064] The above connecting pipe (41) and injection pipe (51) can be formed from a metal material that can maintain its shape without deformation even at high temperatures, and preferably, a corrosion-resistant stainless steel pipe or duralumin pipe can be used.

[0065] In addition, the nozzle (53) is formed to be inclined at an angle θ in the direction of inclination, ranging from approximately 1 degree to 120 degrees from the centerline (c1) of the spray pipe body (54). Therefore, as shown in FIG. 10, even if the spray pipe (51) is introduced into the lower part of the vehicle when a fire occurs in an electric vehicle or an internal combustion engine vehicle, the nozzle (53) is formed at an angle, so that the fire extinguishing agent can be directly sprayed onto the ignition source formed at the top.

[0066] Meanwhile, the one-touch coupler (31, 32) connecting the tank part (10) and the mixing stick (30), the one-touch coupler (33, 43) connecting the mixing stick (30) and the multi-stage connecting pipe (40), and the one-touch coupler (42, 43) composed of a female plug and a male plug to which a plurality of unit connecting pipes (44) are connected all have the same shape and each has the shape of a male plug (31, 32, 43, 52) and a female plug (33, 42, 11a, 12a) and is snap-assembled.

[0067] Looking at the specific configuration and operation relationship of the above-mentioned one-touch coupler, the following is explained focusing on the female plug (42) and male plug (43) constituting the unit connecting pipe (44) as shown in FIGS. 14 and 15.

[0068] The male plug (43) is integrally formed with an insertion part (432) on one side that is inserted into the interior of the female plug (42) and has a locking groove (431) formed therein, and a screw part (433) on the other side to which a connecting pipe (41) is screwed.

[0069] The above female plug (42) comprises a main body (421) on one side connected to the opposite position where the male plug (43) of the connecting pipe (41) is coupled, a body (426) which is screw-fastened to one side of the main body (421) and has a valve (423) formed with a plurality of discharge holes (422) formed inside and elastic by a spring (424), and a lock ring (425) formed on the other side, and a cover (427) formed to surround the body (426).

[0070] Additionally, the above-mentioned arm plug (42) is physically maintained in a state where one side of the spring (424) formed on the inner side of the body (426) is in close contact with the main body (421), and the other side is in close contact with the valve (423) and advanced forward, thereby preventing the natural discharge of the fire extinguishing agent by closing the discharge hole (422) formed in the valve (423) by being in close contact with the inner surface of the body (426).

[0071] As shown in FIGS. 15 and 16, the female plug (42) and male plug (43) configured as described above are such that when the valve (423) of the female plug (42) is advanced by the elasticity of the spring (424) and the discharge hole (422) is sealed by being in close contact with the inner surface of the body (426), as shown in FIG. 15, the insertion part (432) of the male plug (43) is inserted into the inside of the valve (423), the valve (423) moves to the rear side by overcoming the elasticity of the spring (424) due to the insertion of the insertion part (432), and at the same time, the lock ring (425) is inserted into the locking groove (431) of the male plug (43), so that the inserted state of the male plug (43) is physically maintained firmly.

[0072] In addition, as described above, by inserting the insertion part (432), the valve (423) moves inward, thereby opening the discharge hole (422) so that it is spaced apart from the inner surface of the body (426). Consequently, the fire extinguishing agent flowing in from the main body (421) flows into the inner side of the body (426), passes through the multiple discharge holes (422), moves toward the male plug (43), and moves through the adjacent connecting pipe (44) in a state where the fire extinguishing agent is airtight.

[0073] Meanwhile, as shown in FIGS. 5 to 7, the above-mentioned spray pipe (51) has a central part through which a socket or male plug (52) is formed on one side of the spray pipe body (54) to connect with a multi-stage connecting pipe (40) in a one-touch manner, and a nozzle (53) for spraying a foam fire extinguishing agent is formed on the other side.

[0074] The nozzle (53) includes a nozzle body (533) having an assembly screw portion (531) formed at one end that is coupled to a female screw hole (541) formed at one end of a spray pipe body (54), and a spray nozzle (532) assembled at the other end for spraying a fire extinguishing agent.

[0075] As shown in FIG. 7, the nozzle body (533) has a passage space (533a) formed in which a fire extinguishing agent passes through and is connected to the spray pipe body (54), and a screw hole (533b) formed at the other end of the passage space (533a) to which the nozzle (53) is coupled, and a tool assembly part (534) formed in the middle of the outer surface to which an assembly tool such as a spanner is assembled.

[0076] The nozzle (53) is formed with a spray hole (532a) through which a fire extinguishing agent is sprayed in the center, a male screw part (532b) that is screw-assembled into the screw hole (533b) is formed at one end, a tool assembly surface (532c) that is assembled to an assembly tool is formed in the middle of the outer surface, and a spray protrusion (532d) is formed at the outlet where the fire extinguishing agent is sprayed.

[0077] In addition, as shown in FIG. 7, the nozzle (53) is formed to be inclined at an angle θ in the direction of inclination in the range of approximately 1 to 120 degrees from the centerline (c1) of the spray pipe body (54). Therefore, as shown in FIG. 9, even if the spray pipe (51) is introduced into the lower part of the vehicle when a fire occurs in an electric vehicle or an internal combustion engine vehicle, the nozzle (53) is formed at an angle, so that the extinguishing agent can be directly sprayed onto the ignition source formed at the top.

[0078] Meanwhile, FIG. 8 is a cross-sectional view of a modified embodiment of the spray nozzle portion of a portable compressed air foam fire extinguisher according to the first embodiment of the present invention, wherein the spray nozzle (53') of the modified embodiment is formed in a slanted shape such that the spray hole (532a'), which has an internal opening, narrows outwardly, and a cone-shaped spring (534) is inserted into the slanted spray hole (332a').

[0079] In addition, the spring (534) is maintained in a state of being received inside the inclined spray hole (532a') by a stopper (533c') formed on the lower side of the inclined spray hole (532a'), and when a fire extinguishing agent is sprayed, it moves forward by the spray pressure of the fire extinguishing agent and induces a vortex phenomenon of the fire extinguishing liquid.

[0080] Through the configuration of the nozzle (53') according to the present embodiment configured as described above, the fire extinguishing liquid sprayed through the inclined spray hole (532a') comes into contact with the spring (534) placed inside and sprays in a swirling form, thereby reducing the spraying speed and extending the spraying time of the fire extinguishing liquid, and also forming a wide spraying radius of the fire extinguishing liquid, thereby maximizing the fire suppression effect.

[0081] By utilizing the configuration of the mixing stick (30) and the multi-stage connecting pipe (40) as described above, as shown in FIG. 9, the fire extinguishing agent mixed with gas (in this embodiment, 'nitrogen gas' is used) flowing in from the tank section (10) passes through the mixing stick (30) and is mixed with one another to form a foam. Then, the multi-stage connecting pipe (40), which is formed by connecting the mixing stick (30) and a coupler (33) in a one-touch manner and connecting a plurality of unit connecting pipes (44) in a one-touch manner, and the spray pipe (51), which is connected to the end of the multi-stage connecting pipe (40) in a one-touch manner using a coupler, are configured such that the nozzle (53) formed at the shortest end of the spray pipe (51) is positioned as close as possible to the ignition source of the fire. In this state, the fire extinguishing device (11) and the nitrogen gas tank (12), which are located at a distance where safety is ensured from the fire occurrence location by the multi-stage connecting pipe (40), are positioned and operated so that the internal fire extinguishing agent and nitrogen gas are sprayed, and simultaneously from the mixing stick (30) In a state where it is mixed and formed into a foam, it is accurately sprayed in a direct stream to the source of the fire through the spray hole (532a) of the nozzle (53) to suppress the fire.

[0082] Meanwhile, FIG. 10 is another embodiment of a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing according to the present invention. The feature of this embodiment is that a female plug (42) of the coupler configuration is connected to the end of a connecting pipe (41) and connected in a one-touch manner to a male plug (43) formed in a body (3) including the front bumper, rear bumper, and fenders on both sides of a vehicle (1), thereby directly spraying a foam fire extinguishing agent into the interior of a battery case (70) connected to the male plug (43) and the agent inlet pipe (60).

[0083] In particular, as shown in FIGS. 20 and 21, the firefighting system using the compressed air foam composite firefighting device of the present invention is configured such that a fire truck plug (83) having a diameter of 3 to 5 cm is installed on the front bumper and rear bumper of the vehicle (1), and the fire truck plug (83) is connected to the battery case (70) by a hollow tube (84) with a diameter of 3 to 5 cm, and a check valve (85) that operates only in the inflow direction is installed at the connection part of the battery case (70), and a male plug (83) connected to the female plug (82) of the fire stick tube (81) connected to the fire hose (80) of the fire truck or fire hydrant is installed, so that firefighters can quickly extinguish the fire in the battery case (70) using the fire stick tube (81).

[0084] As shown in FIG. 12, the battery case (70) is installed on the lower part of the vehicle body and is configured to protect the battery in the event of a collision with the vehicle by housing a battery pack inside. In particular, the battery case (70) may be formed using various lightweight materials such as non-ferrous lightweight metals, CFRP, and polymer composite materials so as to meet various safety standards to shield electromagnetic waves of the battery pack housed inside, while simultaneously minimizing the increase in vehicle weight to improve fuel efficiency.

[0085] In addition, the battery case (70) is formed by a press processing method using a mold to improve productivity and maintain dimensional stability, and is composed of an upper case (71) and a lower case (72), and is formed such that the edges are fastened with bolts and nuts to accommodate a battery module (2) inside, and the lower case (72) has four connecting parts (73) formed in the front, back, left, and right directions through which a fire extinguishing agent flows in all directions.

[0086] In addition, a flame-retardant pad (74) is formed at the connection portion between the upper case (71) and the lower case (72) constituting the battery case (70) to enable smooth injection of the fire extinguishing agent, and at the same time, flames and hot air are directed toward the agent inlet pipe (60) to quickly extinguish the battery pack (2) of the vehicle (1).

[0087] In addition, the flame retardant function is activated by the flame retardant pad (74) formed on the battery case (70), thereby reducing the risk of fire in the battery case (70). Furthermore, due to thermal runaway of the battery, flames and hot air are guided through the space surrounding the battery pack to the agent inlet pipe (60) formed in the front, back, left, and right directions and discharged to the outside, and the fire extinguishing agent is sprayed through a single agent inlet pipe (60), thereby enabling rapid and effective fire suppression.

[0088] The above-mentioned agent inlet pipe (60) is configured such that one end is connected to the connection part (73) of the battery case (70) and the other end is connected to a male plug (43) fixed to the body (3) of the vehicle (1), and guides the fire extinguishing agent introduced through the female plug (42) coupled to the male plug (43) into the battery case (70), and is formed by bending a metal pipe to fit the shape of the lower part of the vehicle.

[0089] In particular, a female connecting part (61) with a packing (62) formed inside is fitted at the end connected to the connecting part (73) of the above-mentioned drug inlet pipe (60), and a female screw hole (611) and a groove (612) are formed therein. The drug inlet pipe (60) passes through the groove (612) of the female connecting part (61), and the packing (62) is fitted while the flange (63) formed at the end of the drug inlet pipe (60) is caught on the inner surface of the female screw hole (611).

[0090] That is, by the configuration of the female connection part (61) as described above, even if the drug inlet pipe (60) is positioned at an acute or obtuse angle during the process of connecting the drug inlet pipe (60) to the connection part (73), the female screw hole (611) of the female connection part (61) guides the drug inlet pipe (60) in a horizontal direction during the process of connecting the connection part (73) in a screw-like manner, thereby making it easy to connect the case body (70) and the drug inlet pipe (60).

[0091] In addition, the connection part (73) and the female connection part (61) are sealed by a packing (63) formed inside the female connection part (61), so that the fire extinguishing agent can be stably injected into the battery case (70) without the fire extinguishing agent being exposed to the outside.

[0092] In addition, as shown in FIG. 18, the other end of the above drug inlet pipe (60) is connected to a male plug (43) formed on the front bumper, rear bumper, and fenders (3) on both sides of the vehicle, so that four drug inlet pipes (60) are formed by bending them into different lengths and shapes.

[0093] In addition, a male plug (43) fixed to the front bumper, rear bumper, and both fenders (3) of the vehicle (1) is formed with a cap (4) that opens and closes to cover the male plug (43) to prevent deterioration of the vehicle's exterior appearance and to protect the male plug (43).

[0094] In addition, the elastic spring (not shown) installed to open and close the cap (4) formed on the side of the vehicle is configured to have more than twice the elasticity compared to the elastic spring (not shown) of the cap (4) formed on the front and rear of the vehicle, thereby preventing the cap (4) formed on the side from being easily opened and closed.

[0095] Meanwhile, FIG. 19 is a perspective view of another embodiment of a battery case to which a modified spray nozzle is connected among a mobile compressed air foam composite fire extinguishing device capable of long-distance fire extinguishing according to the first embodiment of the present invention. The feature of this embodiment is that by dividing the agent inlet pipe (60) connected to the front / rear bumper direction of the case body (70), the agent injected through the male plug (43) can be sprayed more quickly into the battery receiving space of the case body (70), thereby preventing the fire from spreading to the entire vehicle within the golden time (2 to 5 minutes).

[0096] As described above, the mobile compressed air foam composite fire extinguishing device capable of long-distance fire suppression according to the present invention has a capacity ranging from 5 kg to 150 kg for the agent tank filled with foam extinguishing agent and the gas tank filled with gas, and can be formed into a small size ranging from 5 kg to 15 kg for vehicle mounting or personal use at construction sites, or formed into a large size ranging from 15 kg to 150 kg for installation in parking lots or various manufacturing sites, or for installation in palaces, religious facilities, and construction sites, allowing it to be easily moved to the fire occurrence area, thereby enabling rapid fire response. In particular, the sprayed foam extinguishing agent is sprayed in a foam form by the simultaneously sprayed gas, and by covering the fire occurrence area with foam and suppressing the fire using suffocation and cooling effects, it has the characteristic of providing excellent fire extinguishing efficiency even when using a small amount of foam extinguishing agent.

[0097] In addition, the foam extinguishing agent and nitrogen gas discharged through the agent tank and gas tank can be sprayed uniformly and stably by means of a pressure reducing valve that discharges at a set pressure. Since the pressure reducing valve has a structure in which the pressure indicator dial and pressure regulating part are removed and the pressure is reduced to a single pressure, its weight is significantly reduced, making it possible to carry the gas tank by lifting it. Furthermore, by employing a pressure reducing valve set to different spray pressures depending on the size of the agent tank and gas tank, a uniform spray pressure can be stably maintained, thereby improving the quality of the foam actually sprayed.

[0098] In addition, the foam extinguishing agent and nitrogen gas discharged through the agent tank and gas tank are mixed stably through the mixing stick without a decrease in pressure. In particular, the spray nozzle can be positioned close to the origin of the fire through multiple multi-stage connecting pipes connected to the mixing stick, so the spray position and direction of the agent can be accurately set even when using a small amount of foam extinguishing agent. This allows for precise spraying to the origin of the fire without wasting the agent, thereby ensuring efficient initial response even with a small amount of extinguishing agent.

[0100] As explained above, the best embodiments are disclosed in the drawings and specification. Specific terms have been used herein, but they are used only for the purpose of describing the invention and are not intended to limit the meaning or the scope of the invention as described in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the invention should be determined by the technical spirit of the appended claims. Explanation of the symbols

[0102] 10: Tank section 11: Fire extinguishing device 12: Gas tank 20: Pressure reducing valve 21: Main body 211: Inlet port 212: Outlet port 213: Guide groove 214: Moving port 22: Piston 221: Disc 222: Pressure plate 223: Sealing plate 23: Elastic body 24: Cover 25: Packing 30: Mixing stick 31: First coupler 32: Second coupler 33: Third coupler 34: Pipe 35: Valve 40: Multi-stage connecting pipe 41: Pipe 42: Plug 43: Male plug 44: Unit connecting pipe 50: Spray nozzle 51: Spray pipe 511: Female thread hole 52: Male plug 53: Nozzle 531: Assembly screw section 532: Spray port 533: Nozzle body 534: Spring 60: Agent inlet pipe 70: Battery case 71: Upper case 72: Lower case 73 : Connection part 74 : Flame retardant pad

Claims

Claim 1 In a mobile compressed air foam composite fire extinguishing device capable of remote fire extinguishing, the mobile compressed air foam composite fire extinguishing device (100) capable of remote fire extinguishing comprises: a tank section (10) composed of a fire extinguishing device (11) containing a fire extinguishing agent and a gas tank (12) containing nitrogen gas; a pressure reducing valve (20) configured in the nitrogen gas discharge line of the gas tank (12) to provide a uniform discharge pressure of the discharged nitrogen gas; a mixing stick (30) that provides a space for mixing the fire extinguishing agent discharged from the fire extinguishing device (11) and the nitrogen gas discharged from the gas tank (12), and discharges only the fire extinguishing agent, only the nitrogen gas, or a fire extinguishing agent mixed with nitrogen gas depending on the fire extinguishing agent discharged from the fire extinguishing device (11) and the nitrogen gas discharged from the gas tank (12); and a plurality of unit connecting pipes (44) connected to each other to move the fire extinguishing agent, nitrogen gas, or fire extinguishing agent mixed with nitrogen gas discharged through the mixing stick (30) to the location of the fire. The device comprises a multi-stage connecting pipe (40) formed by a one-touch connection, and a spray nozzle (50) having one end connected to the multi-stage connecting pipe (40) in a one-touch manner and a nozzle (53) formed on the other end for spraying a fire extinguishing agent. The mixing stick (30) is composed of a "Y" shaped hollow pipe (34). A first coupler (31) is formed on one side of the hollow pipe (34) of the mixing stick (30), connected to the female plug (12a) of the gas tank (12), and has a check valve (36) formed at the rear. A second coupler (32) is formed on the other side of the hollow pipe (34), connected to the female plug (11a) of the fire extinguishing device (11), and has a check valve (36) formed at the rear. A third coupler (female plug) (33) is formed at the other end of the discharge path of the hollow pipe (34), connected to the multi-stage connecting pipe (40). A fire extinguishing agent configured at the rear end of a hollow tube (34) to selectively discharge a fire extinguishing agent discharged from a fire extinguishing device (11) or a fire extinguishing agent mixed with nitrogen gas discharged from a gas tank (12), and to create a foam-shaped fire extinguishing agent by closing the space where the nitrogen gas and the fire extinguishing agent are mixed.A valve (35) is configured in the discharge path of nitrogen gas so as to be able to respond to complex fire occurrences using a fire extinguishing agent, nitrogen gas, or a foam-type fire extinguishing agent mixed with nitrogen gas discharged from a fire extinguishing device (11) or a gas tank (12); the spray nozzle (50) comprises a spray pipe (51) having a tubular shape with an internal opening, having a female screw hole (511) formed on one side and a male plug (53) formed on the other side for one-touch connection with a multi-stage connecting pipe (40); an assembly screw part (531) that is screw-fastened to the female screw hole (511) on one side and a screw hole (533b) formed inclined toward one side on the other side, and a passage space (533a) formed inside through which the fire extinguishing agent passes; and a male screw part (532b) that is screw-fastened to the screw hole (533b) formed in the central part, and the A portable compressed air foam composite fire extinguishing device capable of long-distance fire suppression, characterized by comprising a nozzle (53) having a spray hole (532a') formed in a slanted shape that narrows outwardly and communicates with a passage space (533a) and has stopper projections (533c') formed at both ends, a cone-shaped spring (534) inserted into the spray hole (532a'), and a tool assembly surface (532c) and a spray protrusion (532d) integrally formed on the outside that are assembled to an assembly tool. Claim 2 delete Claim 3 In claim 1, the pressure reducing valve (20) comprises: a main body (21) having an inlet hole (211) for gas to flow into one side and an outlet hole (212) formed on the other side, and a moving hole (214) formed integrally in the central part that is opened and closed by the operation of a piston (22) and is formed in alignment with a guide groove (213); a piston (22) formed in a form capable of vertical movement in the guide groove (213) of the main body (21), having a disc (221) at the bottom end that seals the lower part of the moving hole (214), a pressure plate (222) at the top end, and a sealing plate (223) at the central part for guiding vertical movement; a cover (24) formed in a detachable form on the upper part of the main body (21), having an elastic body (23) inside that is in a state where the pressure plate (222) is in close contact with the upper part; and a connection part between the main body (21) and the cover (24) for providing airtightness of the connection part. A mobile compressed air foam composite fire extinguishing device capable of long-distance fire suppression, comprising a packing (25), wherein the elastic body (23) is formed by a plurality of elastic plates (232') integrally formed by being bent downward inward toward the main body (231') having a normal spring or circular ring shape to have elasticity. Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete

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