Composite Flow-Path Fire Suppression Frame System

Abstract

The present invention relates to a composite flow-type fire extinguishing frame system comprising: a chamber section that stores and distributes fire extinguishing water while simultaneously controlling flow by sucking in external air and smoke generated during a fire; a water tank that supplies fire extinguishing water to the chamber section; and a control section that controls the operation of the chamber section according to fire detection. The chamber section comprises: a water supply chamber section including a water supply frame having a liquid flow path formed therein, a plurality of spray nozzles provided in the water supply frame for spraying fire extinguishing water, and a mist nozzle that mixes air and water to generate fine droplets; and an air intake chamber section including an air intake frame disposed in the internal space of the water supply frame and controlling flow by sucking in external air and smoke. The mist nozzle is positioned at an angle toward the center of the water supply frame so that fine droplets intersect and concentrate in the upper space, and the air intake chamber section guides smoke into the water supply frame so that the fine droplets and smoke come into contact and aggregate.

Description

Technology Field

[0001] The present invention relates to a composite flow-type fire extinguishing frame system, and more specifically, to a composite flow-type fire extinguishing frame system capable of automatically responding to a fire occurring in the underside of an electric vehicle at an early stage and suppressing the spread of smoke. Background Technology

[0002] With the recent expansion of electric vehicles, fire accidents caused by battery thermal runaway are on the rise. These fires are characterized by a rapid temperature increase within a short period, generating large amounts of smoke and toxic gases. In particular, electric vehicle fires frequently originate in battery modules located in the vehicle's undercarriage, making external access difficult in the early stages. Furthermore, smoke spreads before flames, obstructing visibility and hindering evacuation.

[0003] Conventional fire response methods include covering a burning vehicle with a fireproof blanket, but this requires a person to physically approach and install it, which inevitably delays the initial response and has limitations in that it is difficult to apply in environments with rapid heat and smoke at the beginning of a fire. In addition, automatic fire extinguishing systems based on temperature sensors or electrical detection devices may fail to operate if the power supply is cut off or the sensor malfunctions, and there is a problem that electrical reliability may be compromised, especially in a fire environment.

[0004] Meanwhile, while mist-based fire extinguishing technology has the advantage of absorbing heat and capturing smoke particles by spraying water as fine droplets, conventional technology suffers from the problem that the mixing of air and water is non-uniform, resulting in inconsistent droplet sizes and insufficient smoke removal efficiency. Furthermore, the lack of systematic airflow control prevents the direction of smoke diffusion, consequently limiting smoke removal performance. Moreover, existing systems have the drawback of complex structures, increased installation space, and difficult maintenance, as the air supply line, water injection piping, and structural frame are configured independently.

[0005] Therefore, there is a need for a fire response system with a new structure that can automatically respond in the early stages of rapidly progressing fire situations, such as fires under electric vehicles, suppress smoke spread, and operate stably while minimizing dependence on power. Prior art literature

[0006] Korean Registered Patent Publication No. 10-2633931 (February 1, 2024) Korean Registered Patent Publication No. 10-2726633 (November 1, 2024) The problem to be solved

[0007] The objective of the present invention, aimed at solving the aforementioned problems, is to provide a composite flow-type fire extinguishing frame system capable of implementing a dual safety structure that can operate even in the event of power failure by applying gravity-based fluid supply and bimetal actuation, while providing a composite flow-type frame that integrates air flow control and liquid injection functions for initial automatic response to electric vehicle battery thermal runaway fires, improving smoke removal efficiency through orifice-based uniform air distribution and two-fluid mist, and applying gravity-based fluid supply and bimetal actuation. means of solving the problem

[0008] A composite flow-type fire extinguishing frame system according to the present invention for achieving the above-mentioned purpose is characterized by comprising: a chamber unit that controls flow by storing and distributing fire extinguishing water while simultaneously inhaling external air and smoke generated during a fire; a water tank that supplies fire extinguishing water to the chamber unit; and a control unit that controls the operation of the chamber unit according to fire detection.

[0009] The above chamber section may include: a water supply chamber section comprising a water supply frame having a liquid flow path formed therein, a plurality of spray nozzles provided in the water supply frame for spraying fire extinguishing water, and a mist nozzle for mixing air and water to generate fine droplets; and an air intake chamber section comprising an air intake frame disposed in the internal space of the water supply frame and controlling flow by sucking in external air and smoke.

[0010] The mist nozzle is positioned at an angle toward the center of the water supply frame so that fine droplets cross and concentrate in the upper space, and the air intake chamber can guide smoke into the water supply frame so that the fine droplets and smoke come into contact and aggregate.

[0011] The above water supply frame is formed in a rectangular flat plate shape, and an internal fluid receiving space can be formed by side walls protruding along the edges.

[0012] The above injection nozzles consist of 8 to 12 nozzles and can be arranged at regular intervals or in a symmetrical structure.

[0013] The above mist nozzle includes an orifice having a plurality of fine through holes inside, and can form turbulence when mixed with air to decompose fire extinguishing water into fine droplets.

[0014] The above water supply chamber further includes a drain hole in the central part, and the drain hole is connected to a drainage channel having a downward slope to discharge residual extinguishing water and aggregated smoke particles.

[0015] The above air intake chamber is formed with a closed-loop structure having a square cross-section, and slit-shaped intake ports with a louver structure are formed at each corner to guide external air and smoke into the interior.

[0016] The above air intake chamber includes a continuous duct structure inside, which can guide the inhaled air and smoke to move along a constant path.

[0017] The above air intake chamber further includes an intake pipe and a blower, and external air and smoke can be sucked in by the negative pressure formed by the blower.

[0018] The air intake chamber is equipped with a fire detection unit that detects the occurrence of a fire, and the fire detection unit may include a temperature sensor and a bimetal strip.

[0019] The above bimetal strip is formed with a structure in which metals having different coefficients of thermal expansion are combined and deform at a temperature above a set temperature, and the opening of an air passage or the supply of fire extinguishing water can be achieved through said deformation.

[0020] A solenoid valve is installed in the piping connecting the water tank and the water supply chamber, and the solenoid valve can be opened according to a fire detection signal.

[0021] The above solenoid valve can be configured in parallel with a bimetal actuation structure to enable the supply of fire extinguishing water even in the event of a power failure.

[0022] The above control unit can determine whether a fire has occurred based on a detection signal from the fire detection unit and control the operation of the air intake chamber unit and the water supply chamber unit.

[0023] The above control unit may be configured to include a communication module, link with an external control system, and enable remote monitoring and control. Effects of the invention

[0024] According to the present invention, through a composite flow-type frame structure in which an air flow path and a liquid flow path are integrated, the spraying of fire extinguishing water and the control of air and smoke flow are organically performed, thereby simplifying the device configuration and ensuring excellent installability and maintainability even in the narrow space under an electric vehicle. At the same time, by combining a mist nozzle including an inclined slit structure and a multi-perforated orifice, smoke is concentrated towards the center, smoke diffusion is suppressed through the aggregation action of fine droplets, and rapid falling is induced, thereby improving smoke removal performance.

[0025] In addition, according to the present invention, the reliability of fire response can be significantly improved by enabling independent operation even in the event of power failure or sensor malfunction through an electrical and mechanical dual drive structure in which a temperature sensor and a bimetal strip are applied in parallel. Brief explanation of the drawing

[0026] FIG. 1 is a side view showing the overall configuration of a composite Euro-type fire extinguishing frame system according to the present invention. FIG. 2 is a perspective view showing a water supply and air intake chamber section according to the present invention. FIG. 3 is a conceptual diagram showing an operating mechanism in which sprayed mist according to the present invention captures and removes smoke particles. FIG. 4 is a schematic diagram showing the fluid supply line of a composite Euro-type fire extinguishing frame system according to the present invention. Specific details for implementing the invention

[0027] Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0028] Then, a preferred embodiment of the composite Euro-type fire extinguishing frame system according to the present invention will be described in detail.

[0029] FIG. 1 is a side view showing the overall configuration of a composite flow-type fire extinguishing frame system according to the present invention, FIG. 2 is a perspective view showing a water supply and air intake chamber section according to the present invention, FIG. 3 is a conceptual diagram showing an operating mechanism in which sprayed mist collects and removes smoke particles according to the present invention, and FIG. 4 is a configuration diagram showing a fluid supply line of a composite flow-type fire extinguishing frame system according to the present invention.

[0030] Referring to FIG. 1, the composite Euro-type fire extinguishing frame system according to the present invention comprises a chamber section (10), a control section (20), and a water tank (30).

[0031] The above chamber section (10) is configured to perform a combined function of storing and distributing fire extinguishing water, as well as a function of inhaling external air and smoke generated during a fire to control its flow.

[0032] Referring to FIG. 2, the chamber section (10) is configured to include a water supply chamber section (100) and an air intake chamber section (200).

[0033] The above water supply chamber (100) is fluidically connected to a water tank (30) to receive firefighting water, and performs a buffer function of temporarily storing firefighting water introduced through a water supply frame (110) in which a liquid flow path is formed inside, while simultaneously distributing firefighting water uniformly to a plurality of spray points along the liquid flow path.

[0034] Here, the water supply frame (110) is formed in a rectangular flat plate shape, and a side wall of a predetermined height is formed protruding along the edge to partition a fluid receiving space inside, thereby preventing the external leakage of the sprayed fluid.

[0035] The above water supply frame (110) receives fire extinguishing water from a water tank (30) through a water supply pipe (111), and a plurality of spray nozzles (120) are provided on the bottom surface of the water supply frame (110) to perform direct cooling and fire extinguishing of the fire source, and the spray nozzles (120) are spaced apart at regular intervals and spray fire extinguishing water toward the lower side of the electric vehicle.

[0036] At this time, the injection nozzles (120) are formed in 8 to 12 numbers and are arranged at equal intervals or in a symmetrical structure to form a uniform injection pattern, thereby ensuring uniform cooling and extinguishing throughout the battery area of ​​the lower part of the electric vehicle.

[0037] Additionally, a mist nozzle (130) is provided at each corner of the water supply frame (110), and the mist nozzle (130) generates fine droplets by mixing air supplied through the air pipe (112) and water supplied through the water pipe (113) in a two-fluid manner. Accordingly, the generated fine droplets maximize the contact area with smoke particles to promote aggregation, and by inducing rapid falling due to the increased weight of the aggregated particles, they suppress smoke diffusion and improve removal efficiency. In particular, the flow formed by the mist nozzle (130) placed at the corner induces a flow from the outer edge to the center, thereby concentrating the smoke into the water supply frame (110) and enabling effective suppression.

[0038] The above mist nozzles (130) are positioned opposite each other at both ends of the water supply frame (110), and are installed at an angle such that each spray axis is directed toward the center inside the water supply frame (110), thereby forming a flow structure in which the sprayed mist intersects and overlaps in the upper space and is concentrated in the central area.

[0039] Referring to FIG. 3, the mist nozzle (130) includes an orifice (131) having a multi-perforated structure inside, and the orifice (131) uniformly disperses the fluid flow velocity through a plurality of fine through holes and forms turbulence when mixed with air to decompose the extinguishing water into fine droplets. Accordingly, the generated fine droplets are sprayed along an upward parabolic trajectory to form a dome-shaped water film in the upper central area of ​​the frame, and can improve smoke removal efficiency by promoting collision and aggregation with smoke particles collected by the air intake chamber (200), thereby increasing the mass of the particles and inducing rapid falling.

[0040] A drain hole (140) is formed in the central part of the water supply chamber (100) above, so that smoke particles aggregated by fine droplets and residual extinguishing water remaining after spraying are smoothly discharged by gravity. Here, the drain hole (140) may be configured to communicate with a drainage channel having a downward slope to improve discharge efficiency, thereby preventing fluid stagnation inside the frame and maintaining continuous extinguishing performance.

[0041] Meanwhile, a solenoid valve (SV) is installed on one side of the piping connecting the water tank (30) to the water supply frame (110) to selectively open and close the supply of fire extinguishing water according to an electrical control signal from the control unit (20). The solenoid valve (SV) is automatically opened by a signal from the fire detection unit (230) to ensure rapid supply of fire extinguishing water in the event of an initial fire, and can be linked with a manual control or remote control system as needed.

[0042] Here, the solenoid valve (SV) can be configured in parallel with a mechanical bimetal actuation structure and designed to perform a dual safety function that enables the supply of fire extinguishing water even in the event of a power failure or control system malfunction.

[0043] The above air intake chamber (200) is composed of a closed-loop air intake frame (210) with a square cross-section formed with a hollow interior, and is integrally mounted in the internal space of the water supply frame (110) to perform the function of actively inhaling external air and smoke and controlling their flow in the event of a fire.

[0044] A slit-shaped intake port is formed in the inner corner area of ​​each corner of the air intake frame (210). The slit-shaped intake port is formed with a louver (220) structure in which a plurality of longitudinal openings are arranged in parallel, and is formed at a predetermined angle so as to be inclined toward the center of the frame, thereby inducing external air and smoke into the frame and simultaneously controlling the direction of the inflow. At this time, the louver (220) structure can be designed to equalize the velocity distribution of the inflow air and suppress the generation of turbulence to form a stable flow, and to minimize the direct inflow of external foreign substances.

[0045] In addition, a continuous duct structure with a square cross-sectional shape is formed inside the air intake frame (210) to guide the inhaled air and smoke to move along a constant flow path. The duct structure is designed to minimize sudden cross-sectional changes or the generation of vortices to suppress flow instability, thereby ensuring that the flow of smoke is maintained uniformly and stably. This structure contributes to maximizing the smoke-droplet contact efficiency in the mist nozzle area.

[0046] An intake pipe (211) communicating with the internal flow path of the air intake frame (210) is connected, and a blower (B) is provided at the end of the intake pipe (211) to form negative pressure, thereby sucking external air and smoke into the frame.

[0047] A fire detection unit (230) for detecting whether a fire has occurred is provided on the upper surface of each corner of the air intake frame (210), and by detecting heat or smoke generated during a fire and transmitting the detection signal to the control unit (20), the solenoid valve (SV) is opened so that air intake and fire extinguishing operations are automatically initiated.

[0048] Here, the fire detection unit (230) is configured to include a temperature sensor (231) and a bimetal strip (232).

[0049] The above temperature sensor (231) detects a rise in ambient temperature or intake air temperature when a fire occurs and transmits the signal to the control unit (20).

[0050] The bimetal strip (232) is configured to be mechanically deformed according to temperature changes, so that air intake and fire extinguishing operations are performed by operating independently even in the event of failure or malfunction of the temperature sensor (231). Here, the bimetal strip (232) is a structure in which metals having different coefficients of thermal expansion are combined, and it is mechanically deformed above a certain temperature, and this deformation operation directly induces mechanical operations such as opening the air passage or starting the supply of fire extinguishing water. Accordingly, a dual safety structure can be implemented so that air intake and fire extinguishing functions are performed automatically when the temperature exceeds a certain level, even in situations where the power supply is cut off or the electrical control signal is not transmitted normally.

[0051] Referring to FIG. 4, the system may further include various components for fluid control, such as a ball valve (BV) for opening and closing the flow of fluid, a solenoid valve (SV) for controlling the flow rate according to an electrical signal, a check valve (CV) for preventing backflow of fluid, a safety valve (RV) for protecting the system by releasing fluid when overpressure occurs in the piping, a filter (ST) for removing foreign substances in the fluid, a filter regulator (FR) for regulating the pressure of compressed air and removing moisture and foreign substances, a motor (M) for pressurizing the fluid in the tank and transferring it downstream, a compressor (C) for compressing air and supplying it to the air piping, and a blower (B) for supplying a large amount of air at low pressure.

[0052] The above control unit (20) is a core component that comprehensively controls the overall operation of the system and comprehensively manages fire detection, air intake control, fluid supply control, and the operating status of each functional unit.

[0053] The above control unit (20) determines whether a fire has occurred based on a detection signal input from a temperature sensor (220) or a bimetal strip (230) constituting a fire detection unit (230), and selectively drives a solenoid valve (SV) for controlling the intake of air and smoke into the air intake chamber (200), a solenoid valve (SV) for controlling the supply of fire extinguishing water to the water supply chamber (100), and an air supply system according to the result of the determination.

[0054] In addition, the control unit (20) is configured to include a communication module and be linked with an external integrated control system, thereby enabling remote monitoring, remote control, and an integrated response to multiple fire situations. The communication module can transmit real-time status information externally via wired or wireless communication methods and receive external control signals to perform remote control functions in parallel with on-site automatic control.

[0055] Meanwhile, in order to ensure operational reliability of the system even in extreme environments such as fire, the present invention additionally includes a mechanical drive structure that operates independently of the electrical control method. To this end, a driving means based on a bimetal strip (232) connected to the control unit (20) is provided, and the bimetal strip (232) is formed in a structure in which metals having different coefficients of thermal expansion are combined, so that when the ambient temperature rises above a set temperature, mechanical bending deformation occurs due to the difference in thermal expansion.

[0056] The deformation force of the above bimetal strip (232) is configured to be directly transmitted to a valve or operating switch that controls the supply of fire extinguishing water, and accordingly, the fire extinguishing function is automatically initiated regardless of the electrical control signal of the control unit (20). That is, even if power cutoff, wiring disconnection, or sensor malfunction occurs due to a fire, fire extinguishing water is supplied and air flow is initiated by mechanical operation above a certain temperature, so that the system operates normally.

[0057] Consequently, the control unit (20) has the characteristic of implementing a double safety structure (Fail-Safe) capable of stable fire response even in various abnormal situations through a structure in which electrical control-based automatic and remote control functions and mechanical independent driving functions using a bimetal strip (232) are combined complementarily.

[0058] Although embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims also fall within the scope of the present invention. Explanation of the symbols

[0059] 10: Chamber section 20: Control section 30: Water tank 100: Water supply chamber 110: Water supply frame 120: Spray nozzle 130: Mist nozzle 140: Drain hole 200: Air intake chamber section 210: Air intake frame 220: Louver 230: Fire detection unit

Claims

Claim 1 A chamber section that stores and distributes fire extinguishing water while simultaneously controlling flow by sucking in external air and smoke generated during a fire; a water tank that supplies fire extinguishing water to the chamber section; and a control section that controls the operation of the chamber section according to fire detection; wherein the chamber section comprises: a water supply chamber section including a water supply frame having a liquid flow path formed therein, a plurality of spray nozzles provided in the water supply frame for spraying fire extinguishing water, and a mist nozzle that mixes air and water to generate fine droplets; and an air intake chamber section including an air intake frame disposed in the internal space of the water supply frame and controlling flow by sucking in external air and smoke.The above includes, wherein the mist nozzle is provided at each corner of the water supply frame and is positioned at an angle toward the center so that fine droplets intersect and concentrate in the upper space, and the air intake chamber guides smoke into the water supply frame so that the fine droplets and smoke come into contact and aggregate, and the air intake chamber is formed with a closed-loop structure of a square cross section, and a slit-shaped intake port having a louver structure is formed in the inner area of ​​each corner to guide external air and smoke into the interior, and a continuous duct structure with a square cross section is formed inside the air intake chamber to guide the sucked air and smoke to move along a constant flow path with minimal vortex generation, and the mist nozzle is configured to form a dome-shaped water film in the central upper area of ​​the water supply frame by spraying mist along an upward parabolic trajectory including an orifice with a multi-perforated structure inside, and a drain hole is formed in the central part of the water supply chamber in communication with a drainage flow path having a downward slope to prevent fluid stagnation inside the frame while retaining fire extinguishing water and A composite flow-type fire extinguishing frame system characterized by being configured to discharge aggregated smoke particles by gravity, having a solenoid valve installed in the piping connecting the water tank and the water supply chamber, having a fire detection unit including a temperature sensor and a bimetal strip in the air intake chamber, and having the solenoid valve configured to operate in parallel with a mutually complementary double safety structure (Fail-Safe) by an electrical control signal from the control unit and a mechanical deformation force generated when the bimetal strip deforms above a set temperature, so that fire extinguishing water is supplied by independent mechanical drive even in the event of an electrical power failure. Claim 2 A composite flow-type fire extinguishing frame system according to claim 1, characterized in that the water supply frame is formed in a rectangular flat plate shape and an internal fluid receiving space is formed by a side wall protruding along the edge. Claim 3 A composite flow-type fire extinguishing frame system according to claim 1, characterized in that the injection nozzles are composed of 8 to 12 and are arranged at regular intervals or in a symmetrical structure. Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 A composite flow-type fire extinguishing frame system according to claim 1, wherein the air intake chamber further comprises an intake pipe and a blower, and external air and smoke are sucked in by the negative pressure formed by the blower. Claim 9 delete Claim 10 A composite flow path type fire extinguishing frame system according to claim 1, wherein the bimetal strip is formed in a structure in which metals having different coefficients of thermal expansion are combined and deformed above a set temperature, and the opening of an air passage or supply of fire extinguishing water is achieved by said deformation. Claim 11 delete Claim 12 delete Claim 13 A composite flow-type fire extinguishing frame system according to claim 1, wherein the control unit determines whether a fire has occurred based on a detection signal from a fire detection unit and controls the operation of an air intake chamber and a water supply chamber. Claim 14 A composite Euro-type fire extinguishing frame system according to Clause 13, characterized in that the control unit includes a communication module and is configured to be linked with an external control system and capable of remote monitoring and control.

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