Fire Prevention Equipment

Abstract

The present invention relates to a multi-functional firefighting device for fire suppression, and The fire door installation wall (10), cover (20), doors (90), fire door (30), handle mechanism (40), coolant spray mechanism (50), temperature sensor (60), first and second warning displays (70, 70'), first and second cooling operation buttons (80, 80'), fire extinguishing gas spray mechanism (120), first and second fire detection sensors (100, 100'), and control unit (110) are included, so that when a fire occurs around the fire door, the fire source can be quickly extinguished using fire extinguishing gas, and the fire door can be safely opened when a fire occurs.

Description

Technology Field

[0001] The present invention relates to a multi-functional firefighting device for fire suppression. Background Technology

[0002] Generally, when a fire breaks out, it spreads to the surrounding area and develops into a large-scale fire.

[0003] Therefore, there is a need to quickly suppress the fire in its early stages when it occurs.

[0004] In particular, when a fire occurs near a fire door (1) as in Fig. 1, the evacuee who evacuated to the fire door (1) may be at greater risk of fire.

[0005] Meanwhile, fire doors generally serve the function of preventing the intrusion or spread of smoke and heat in the event of a fire. In particular, fire doors are installed at the entrances of multi-unit dwellings such as apartments or at the doorways of office buildings to prevent the spread of fire.

[0006] These fire doors are made of fire-resistant metal, and protruding handles are installed on the front and rear sides of the fire doors, respectively, and the fire doors are installed so as to be rotatable on the wall via hinges.

[0007] Therefore, the fire door opens or closes when a user holds the handle and pushes or pulls the fire door.

[0008] However, conventionally, when high heat is transferred to the fire door handle during a fire, evacuees may be exposed to risks such as burns when grasping the handle to open the door; consequently, fire evacuation was difficult because the door could not be easily opened. Prior art literature

[0009] Korean Registered Patent Publication No. 10-1693353 The problem to be solved

[0010] The present invention was developed to solve the above-mentioned problem, and aims to provide a 'firefighting device' capable of rapidly suppressing the point of origin of a fire using extinguishing gas when a fire occurs near a fire door, and safely opening the fire door in the event of a fire. means of solving the problem

[0011] The present invention according to the means for solving the above-mentioned problem is,

[0012] With fire suppression now possible using fire extinguishing gas,

[0013] A fire door installation wall (10) installed in a building passage (P), having a fire door installation hole (11) opened in the left and right directions; a communication hole (12) formed in front of the fire door installation hole (11) and communicating with the fire door installation hole (11); and a cooling agent container installation groove (13) formed in front of the communication hole (12); and

[0014] A cover (20) installed on a fire door installation wall (10) to open and close a coolant container installation groove (13);

[0015] A door frame (90) that is installed around the fire door installation hole (11) of a fire door installation wall (10) having a locking hole (91) formed through in the front and rear directions, wherein the locking hole (91) is located behind the communication hole (12) and communicates with the communication hole (12);

[0016] A fire door (30) having a latch assembly installation groove (31) that opens forward and communicates with a locking hole (91) of a door frame (90), and is rotatably installed on a door frame (90) to open and close a fire door installation hole (11) of a fire door installation wall (10);

[0017] A latch assembly (41) installed in a latch assembly installation groove (31) having a catch (41a) and a cooling agent receiving portion (41b) in which a plurality of cooling fins (41b1) are formed; first and second handles (42, 42') respectively installed at the front and rear of a fire door (30); and a handle mechanism (40) that allows the catch (41a) to be inserted into and removed from the locking groove (12) depending on whether the first handle (42) or the second handle (42) is operated;

[0018] A coolant container (51) installed in a coolant container installation groove (13), comprising a coolant container body (51a) that receives a rapid coolant at high pressure, a coolant inlet (51b) installed in the coolant container body (51a), and a check valve (51c) installed in the coolant inlet (51b) to ensure that the rapid coolant is supplied only to the coolant container body (51a); a spray line (52) connected to the coolant container body (51a); a spray nozzle (53) installed in the spray line (52) to spray the rapid coolant toward the coolant receiving portion (41b); and a coolant discharge valve (54) installed in the spray line (52) to be operated by a control unit (110) and to control the movement of the rapid coolant. A coolant injection mechanism (50) equipped with a pressure gauge (55) installed in the coolant container body (51a) to indicate the internal pressure of the coolant container body (51a);

[0019] A temperature sensor (60) installed on a latch assembly (41) or a first and second handle (42, 42') and outputting a measured temperature value to a control unit (110);

[0020] First and second warning displays (70, 70') are respectively installed at the left and right sides of the fire door (30) and are operated and controlled by a control unit (110);

[0021] First and second cooling operation buttons (80, 80) that are respectively installed at the left and right directions of the fire door (30) and input a cooling operation signal to the control unit (110);

[0022] A fire extinguishing gas injection device (120) having: first and second injection nozzles (121, 121') respectively installed on the upper left and upper right parts of the door frame (90) and spraying fire extinguishing gas to the left and right sides of the fire door (30); first and second injection lines (122, 122') respectively connected to the first and second injection nozzles (121, 121'); first and second opening / closing valves (123, 123') respectively installed on the first and second injection lines (122, 122') and operated by a control unit (110) to open and close the first and second injection lines (122, 122'); and a fire extinguishing gas storage tank (124) that supplies fire extinguishing gas to the first and second injection lines (122, 122');

[0023] First and second fire detection sensors (100, 100') installed respectively on the upper left and upper right sides of the door frame (90) and output a fire detection signal to the control unit (110) when a fire is detected;

[0024] A control unit (110) that opens the coolant discharge valve (54) when receiving a cooling operation signal from the first and second cooling operation buttons (80, 80'), opens the first and second shut-off valves (123, 123') when receiving a fire detection signal from the first and second fire detection sensors (100, 100'), and displays a request for cooling operation button operation on the first and second warning displays (70, 70') when the measured temperature value from the temperature sensor (60) is greater than or equal to a reference value.

[0025] It is characterized by including Effects of the invention

[0026] The present invention, according to the means for solving the above-mentioned problem, comprises a fire door installation wall (10), a cover (20), doors (90), a fire door (30), a handle mechanism (40), a coolant spraying mechanism (50), a temperature sensor (60), first and second warning displays (70, 70'), first and second cooling operation buttons (80, 80'), a fire extinguishing gas spraying mechanism (120), first and second fire detection sensors (100, 100'), and a control unit (110), so that when a fire occurs around the fire door, the fire source can be quickly suppressed using fire extinguishing gas, and the fire door can be safely opened when a fire occurs. Brief explanation of the drawing

[0027] FIG. 1 is a drawing for explaining the prior art, and FIG. 2 is an overall schematic partial cross-sectional view for illustrating the present invention, and FIG. 3 is a drawing showing a part of FIG. 2, and FIG. 4 is a schematic right-side view for illustrating the present invention, and FIG. 5 is a drawing showing a part of FIG. 2, and FIG. 6 is a partial cross-sectional view along the line X-X' of FIG. 5 to explain the latch assembly and the coolant injection mechanism, and FIG. 7 is a partial cross-sectional view along the Y-Y' line of FIG. 6, and FIG. 8 is a schematic diagram illustrating the electrical configuration and the movement of refrigerant and extinguishing gas of the present invention, and FIGS. 9 and FIGS. 10 are drawings for explaining the operation of the present invention. Specific details for implementing the invention

[0028] The present invention is described below so that a person skilled in the art can easily implement it.

[0030] FIG. 2 is an overall schematic partial front cross-sectional view for explaining the present invention, FIG. 3 is a drawing showing a part of FIG. 2, FIG. 4 is a schematic right side view for explaining the present invention, FIG. 5 is a drawing showing a part of FIG. 2, FIG. 6 is a partial cross-sectional view along the line X-X' of FIG. 5 for explaining the latch assembly and the coolant injection mechanism, FIG. 7 is a partial cross-sectional view along the line Y-Y' of FIG. 6, and FIG. 8 is a schematic configuration diagram for explaining the electrical configuration, refrigerant movement, and fire extinguishing gas movement of the present invention. The configuration of the present invention is described as follows with reference to FIG. 2 to FIG. 8. Meanwhile, in this embodiment, the directionality of the configuration of this embodiment is explained using the XYZ coordinates in FIG. 2 and FIG. 4, wherein the X-axis direction in FIG. 2 and FIG. 4 is defined as the left-right direction, the Y-axis direction in FIG. 2 and FIG. 4 is defined as the front-back direction, and the Z-axis direction in FIG. 2 and FIG. 4 is defined as the up-down direction. In addition, the direction of each component in this embodiment is merely an example, and the direction of each component may be interpreted differently depending on how the standard is set.

[0031] A multi-functional firefighting device for fire suppression according to the present invention, which enables fire suppression using fire extinguishing gas, comprises a fire door installation wall (10), a cover (20), doors (90), a fire door (30), a handle mechanism (40), a coolant spraying mechanism (50), a temperature sensor (60), first and second warning displays (70, 70'), first and second cooling operation buttons (80, 80'), a fire extinguishing gas spraying mechanism (120), first and second fire detection sensors (100, 100'), and a control unit (110).

[0032] The above fire door installation wall (10) is installed in a building passage (P) having a fire door installation hole (11), a communication hole (12), and a coolant container installation groove (13), as shown in FIGS. 4, 6, and 7.

[0033] The above fire door installation hole (11) is opened in the left and right directions. In this embodiment, the fire door installation hole (11) has a square hole shape.

[0034] The above communication hole (12) is formed in front of the fire door installation hole (11) and communicates with the fire door installation hole (11). In this embodiment, the front part of the communication hole (12) communicates with the rear part of the fire door installation hole (11).

[0035] The above coolant container installation groove (13) is formed in front of the communication hole (12). In this embodiment, the front part of the coolant container installation groove (13) is in communication with the rear part of the communication hole (12).

[0036] The above cover (20) is installed on the fire door installation wall (10), as shown in FIGS. 4 and 7, to open and close the coolant container installation groove (13). In this embodiment, the cover (20) can be rotatably installed on the fire door installation wall (10).

[0037] As shown in FIGS. 4 and 6, the above door frame (90) is provided with a locking hole (91) formed through the front and rear directions and is installed around the fire door installation hole (11) of the fire door installation wall (10), wherein the locking hole (91) is located behind the communication hole (12) and communicates with the communication hole (12). In this embodiment, the door frame (90) is provided along the perimeter of the fire door installation hole (11) to form a 'ㅁ' shape, but its shape can be modified in various ways as long as the fire door (30) can be installed. Meanwhile, in this embodiment, a bracket (B) provided along the perimeter of the locking hole (91) can be provided as shown in FIG. 6.

[0038] As illustrated in FIGS. 2, 4, and FIGS. 5 to 7, the fire door (30) is provided with a latch assembly installation groove (31) that opens forward and communicates with a locking hole (91) of a door frame (90), and is rotatably installed on the door frame (90) to open and close the fire door installation hole (11) of the fire door installation wall (10). In this embodiment, the fire door (30) is filled with an insulating material inside, is rotatable in both directions, and divides the passage (P) into a first passage (P1) and a second passage (P2). In addition, in this embodiment, the fire door (30) may be installed on the fire door installation wall (10). Meanwhile, in this embodiment, the fire door (30) may be provided in various passages within the building.

[0039] As shown in FIGS. 2 and FIGS. 4 to 7, the handle mechanism (40) is equipped with a latch assembly (41) and first and second handles (42, 42'), and a catch (41a) is inserted into and removed from the catch groove (12) depending on whether the first handle (42) or the second handle (42) is operated.

[0040] The above latch assembly (41) is installed in the latch assembly installation groove (31) by having a catch (41a) and a coolant receiving portion (41b) in which a plurality of cooling fins (41b1) are formed. In this embodiment, the coolant receiving portion (41b) has a groove shape that is open in the rearward direction and is provided with a plurality of cooling fins (41b1) inside. In addition, in this embodiment, instead of cooling fins (41b1), an uneven portion may be formed inside the coolant receiving portion (41b).

[0041] The first and second handles (42, 42') are respectively installed at the front and rear of the fire door (30).

[0042] Meanwhile, in this embodiment, the connection structure between the latch assembly (41) and the first and second handles (42, 42') is a technology known through the structure of a conventional fire door handle, so a detailed description thereof is omitted.

[0043] As shown in FIGS. 6 and 7, the above-mentioned coolant injection mechanism (50) is equipped with a coolant container (51), an injection line (52), an injection nozzle (53), a coolant discharge valve (54), and a pressure gauge (55).

[0044] The above-mentioned coolant container (51) is equipped with a coolant container body (51a), a coolant inlet (51b), and a check valve (51c) and is installed in a coolant container installation groove (13).

[0045] The above-mentioned coolant container body (51a) receives (stores) a rapid coolant under high pressure. In this embodiment, the rapid coolant may be a coolant applied to a conventional coolant spray, but various coolants may be applied as long as they can rapidly cool the target item when sprayed.

[0046] The above coolant inlet (51b) is installed in the coolant container body (51a). In this embodiment, a coolant can be injected through the coolant inlet (51b).

[0047] The above check valve (51c) is installed at the coolant inlet (51b) so that the rapid coolant is supplied only to the coolant container body (51a).

[0048] The above spray line (52) is connected to the main body of the coolant container (51a). In this embodiment, the spray line (52) forms a hose (pipe) shape, with one end connected to the main body of the coolant container (51a) and positioned in the communication hole (12).

[0049] The above-mentioned spray nozzle (53) is installed in the spray line (52) and causes the rapid coolant to be sprayed toward the coolant receiving portion (41b). In this embodiment, the spray nozzle (52) is positioned in the catch groove (12), and the other end of the spray line (52) is connected.

[0050] The above-mentioned coolant discharge valve (54) is installed in the injection line (52) and is operated by the control unit (110) to control the movement of the rapid coolant. In this embodiment, the coolant discharge valve (54) is an electronic valve (solar valve).

[0051] The pressure gauge (55) is installed in the main body (51a) of the coolant container and indicates the internal pressure of the main body (51a) of the coolant container.

[0052] The temperature sensor (60) is installed on the latch assembly (41) or the first and second handles (42, 42'), as shown in FIGS. 5 and 6, and outputs a measured temperature value to the control unit (110). In this embodiment, the temperature sensor (60) is installed on the latch assembly (41), as shown in FIGS. 3 and 4.

[0053] As shown in FIG. 2, the first and second warning displays (70, 70') are respectively installed in the left and right directions of the fire door (30) and are operated and controlled by the control unit (110). In this embodiment, the first and second warning displays (70, 70') are installed on the side wall of the building passageway (P), but their installation positions can be varied in many ways as long as they are located in the left and right directions of the fire door (30).

[0054] As shown in FIG. 2, the first and second cooling operation buttons (80, 80') are installed to be located on the left and right sides of the fire door (30), respectively, and input a cooling operation signal to the control unit (110). In this embodiment, the first and second cooling operation buttons (80, 80') are installed on the side wall of the building passageway (P), but their installation positions can be varied in many ways as long as they are located on the left and right sides of the fire door (30).

[0055] As shown in FIGS. 2 to 4 and FIGS. 8, the above fire extinguishing gas injection device (120) is equipped with first and second injection nozzles (121, 121'), first and second injection lines (122, 122'), first and second shut-off valves (123, 123'), and a fire extinguishing gas storage tank (124), and in the event of a fire, it sprays fire extinguishing gas around the fire door (30).

[0056] The first and second spray nozzles (121, 121') are respectively installed on the upper left and upper right sides of the door frame (90) to spray fire extinguishing gas to the left and right sides of the fire door (30), respectively. In this embodiment, multiple first and second spray nozzles (121, 121') are provided.

[0057] The first and second injection lines (122, 122') are respectively connected to the first and second injection nozzles (121, 121'). In this embodiment, the first and second injection nozzles (121, 121') carry fire extinguishing gas. In addition, in this embodiment, the first and second injection lines (122, 122') can be installed within the door frame (90).

[0058] The first and second opening / closing valves (123, 123') are respectively installed in the first and second injection lines (122, 122') and are operated by a control unit (110) to open and close the first and second injection lines (122, 122') respectively. In this embodiment, the first and second opening / closing valves (123, 123') are of the solenoid valve (solar valve) type. In addition, in this embodiment, the first and second opening / closing valves (123, 123') may be installed inside a door frame.

[0059] The above-mentioned extinguishing gas storage tank (124) supplies extinguishing gas to the first and second injection lines (122, 122'). In this embodiment, the extinguishing gas storage tank (124) may be placed in a separate location and connected to the first and second injection lines (122, 122'). Additionally, the extinguishing gas may be a liquid storage type extinguishing gas, and various conventional extinguishing gases may be applied. Meanwhile, in this embodiment, the first and second injection lines (122, 122') are each connected to the extinguishing gas storage tank (124), but they may also be branched into the first and second branch lines (122, 122') respectively from a separate main connection line (not shown) connected to the extinguishing gas storage tank (124).

[0060] As shown in FIGS. 3, 4, and 8, the first and second fire detection sensors (100, 100') are respectively installed on the upper left and upper right sides of the door frame (90) and output a fire detection signal to the control unit (110) when a fire is detected. In this embodiment, the installation locations of the first and second fire detection sensors (100, 100') can be varied as long as they can detect a fire around the fire door (30).

[0061] The above control unit (110) opens the coolant discharge valve (54) when it receives a cooling operation signal from the first and second cooling operation buttons (80, 80'), opens the first and second shut-off valves (123, 123') when it receives a fire detection signal from the first and second fire detection sensors (100, 100'), and displays a request for cooling operation button operation on the first and second warning displays (70, 70') when the measured temperature value from the temperature sensor (60) is greater than or equal to a reference value. In this embodiment, the control unit (110) is electrically connected to the temperature sensor (60), the first and second warning displays (70, 70'), the first and second cooling operation buttons (80, 80'), the first and second fire detection sensors (100, 100'), and the first and second shut-off valves (123, 123'), as shown in FIG. 8. Meanwhile, in this embodiment, the control unit (110) can perform control functions, and its installation location can be varied in many ways.

[0063] FIGS. 9 and FIGS. 10 are diagrams illustrating the operation of the present invention. With reference to FIGS. 9 and FIGS. 10, the operation of the present invention is described as follows.

[0064] When the control unit (110) receives a fire detection signal from the first and second fire detection sensors (100, 100') while the present invention is installed, the control unit (110) opens the first and second shut-off valves (123, 123').

[0065] For example, when the control unit (110) receives a fire detection signal from the first fire detection sensor (100), the control unit (110) opens the first shut-off valve (123).

[0066] At this time, fire extinguishing gas from the fire extinguishing gas storage tank (124) is sprayed around the fire door (30) of the first passage (P1) through the first spray nozzle (121). (See FIG. 9)

[0067] Then, when a fire occurs near the fire door (30), it is possible to prevent the person evacuating toward the fire door (30) from being put in danger.

[0068] Meanwhile, the cooling method of the handle mechanism (40) installed on the fire door (30) in the present invention is as follows.

[0069] If a fire occurs inside the building, evacuees will encounter a fire door (30) while evacuating.

[0070] At this time, if the handle mechanism (40) is heated by the heat from the fire, the evacuee may get burned if they carelessly grab the first and second handles (42, 42') in a hurry.

[0071] For example, if a fire occurs in the first passage (P1) as in Fig. 2 and the evacuee must open the fire door (30) and evacuate to the second passage (P2), the evacuee may get burned if they inadvertently grab the first handle (42).

[0072] However, in the present invention, when the temperature of the handle mechanism (40) rises above a reference value, the control unit (110), which receives the abnormal measured temperature value from the temperature sensor (60), displays a request to operate the cooling operation button on the first and second warning displays (70, 70'). For example, the first and second warning displays (70, 70') display a warning message such as, "The handle is hot. Press the front cooling operation button to cool the handle."

[0073] Afterwards, when the evacuee presses the first cooling operation button (80), the control unit (110) opens the coolant discharge valve (54).

[0074] Then, the rapid coolant of the coolant container (51) is sprayed into the latch assembly (41) through the spray nozzle (53) as shown in Fig. 10.

[0075] At this time, the rapid coolant is sprayed into the coolant receiving portion (41b) of the latch assembly (41) to cool the latch assembly (41), and the coolant receiving portion (41b) is equipped with a plurality of cooling fins (41b1) so that the latch assembly (41) is cooled more quickly.

[0076] When the latch assembly (41) is cooled in this way, the first and second handles (42, 42') are cooled together by heat transfer, so that an evacuee can use the first handle (42) to open the fire door (30) and quickly evacuate to a safe place.

[0077] Meanwhile, when the handle mechanism (40) is cooled by the rapid cooling agent spray and the temperature of the handle mechanism (40) returns to a normal state, or when the fire is suppressed and the temperature of the handle mechanism (40) returns to a normal state, the control unit (110) causes the warning message displayed on the first and second warning displays (70, 70') to disappear.

[0079] The present invention, as described above, has the effect of quickly suppressing a fire using fire extinguishing gas when a fire occurs near a fire door (30), thereby enabling evacuees heading toward the fire door (30) to safely and quickly evacuate from the fire. Furthermore, the present invention has the effect of preventing evacuees from being hindered from evacuating by fire extinguishing substances by suppressing the fire using fire extinguishing gas.

[0080] In addition, the present invention has the effect of allowing a evacuee to safely use the first and second handles (42, 42') without burns and evacuate quickly by rapidly spraying a rapid cooling agent onto the latch assembly (41) when a fire occurs and the fire door (30) and the handle mechanism (40) become hot due to high heat.

[0082] Meanwhile, in the sense that the present invention includes various structures applicable to firefighting structures, such as a structure for rapidly suppressing a fire around a fire door and a structure for safely using the fire door, the title of the present invention is defined as a "multifunctional firefighting firefighting device for fire suppression," and the subject of the claim of the present invention is defined as a "firefighting firefighting device." Explanation of the symbols

[0083] 10: Wall with fire door installation 20: Cover 30: Fire door 40: Handle mechanism 50: Coolant injection mechanism 60: Temperature sensor 70,70': 1st and 2nd warning displays 80,80': 1st and 2nd cooling operation buttons 90: Door frame 100,100': 1st, 2nd fire detection sensors 110: Control unit 120: Fire extinguishing gas injection device

Claims

Claim 1 Fire suppression is made possible using fire extinguishing gas, and includes a fire door installation hole (11) that is open in the left and right directions; a communication hole (12) formed in front of the fire door installation hole (11) and communicating with the fire door installation hole (11); A fire door installation wall (10) installed in a building passage (P), having a cooling agent container installation groove (13) formed in front of a communication hole (12); a cover (20) installed on the fire door installation wall (10) to open and close the cooling agent container installation groove (13); a door frame (90) installed around the fire door installation hole (11) of the fire door installation wall (10) having a locking hole (91) formed through in the front and rear directions, wherein the locking hole (91) is located behind the communication hole (12) and communicates with the communication hole (12); and a latch assembly installation groove (31) that is opened forward and communicates with the locking hole (91) of the door frame (90), and is rotatably installed on the door frame (90) to open and close the fire door installation hole (11) of the fire door installation wall (10). A fire door (30); a latch assembly (41) installed in a latch assembly installation groove (31) having a latch (41a) and a cooling agent receiving portion (41b) in which a plurality of cooling fins (41b1) are formed; A handle mechanism (40) having first and second handles (42, 42') respectively installed at the front and rear of a fire door (30), wherein a latch (41a) is inserted into and removed from a locking groove (12) depending on whether the first handle (42) or the second handle (42) is operated; a coolant container (51) installed in a coolant container installation groove (13), having a coolant container body (51a) that receives a rapid coolant at high pressure, a coolant inlet (51b) installed in the coolant container body (51a), and a check valve (51c) installed in the coolant inlet (51b) to ensure that the rapid coolant is supplied only to the coolant container body (51a); and a spray line (52) connected to the coolant container body (51a). A spray nozzle (53) installed in the spray line (52) and configured to spray rapid coolant toward the coolant receiving portion (41b); a coolant discharge valve (54) installed in the spray line (52) and configured to be operated by the control unit (110) and configured to control the movement of rapid coolant;A cooling agent injection mechanism (50) equipped with a pressure gauge (55) installed on the cooling agent container body (51a) to indicate the internal pressure of the cooling agent container body (51a); a temperature sensor (60) installed on the latch assembly (41) or the first and second handles (42, 42') and outputting a measured temperature value to the control unit (110); first and second warning displays (70, 70') respectively installed on the left and right sides of the fire door (30) and operated by the control unit (110); first and second cooling operation buttons (80, 80) respectively installed on the left and right sides of the fire door (30) and inputting a cooling operation signal to the control unit (110); and a device installed on the upper left and upper right sides of the door frame (90) respectively to spray fire extinguishing gas to the left and right sides of the fire door (30). First and second injection nozzles (121, 121'); first and second injection lines (122, 122') respectively connected to the first and second injection nozzles (121, 121'); first and second opening / closing valves (123, 123') respectively installed in the first and second injection lines (122, 122') and operated by a control unit (110) to open and close the first and second injection lines (122, 122') respectively; A fire extinguishing gas injection device (120) equipped with a fire extinguishing gas storage tank (124) that supplies fire extinguishing gas to the first and second injection lines (122, 122'); first and second fire detection sensors (100, 100') respectively installed on the upper left and upper right sides of the door frame (90) and output a fire detection signal to the control unit (110) when a fire is detected; and a control unit (110) that opens the coolant discharge valve (54) when a cooling operation signal is received from the first and second cooling operation buttons (80, 80'), opens the first and second shut-off valves (123, 123') when a fire detection signal is received from the first and second fire detection sensors (100, 100'), and displays a request for cooling operation button operation on the first and second warning displays (70, 70') when the measured temperature value from the temperature sensor (60) is greater than or equal to a reference value. A fire-fighting device characterized by including:

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