Small space auto fire extinguisher with separate extinguishing agent and pressurized gas

Abstract

The present invention relates to a small-space automatic fire extinguishing device with a fire extinguishing agent and a pressurized gas separation type that can replenish pressurization by periodically injecting gas through a gas filling part without restrictions on the installation direction of the cylinder, and in particular, to a small-space automatic fire extinguishing device with a fire extinguishing agent and a pressurized gas separation type that can extinguish the internal volume of a small space such as a distribution board or a switchboard.

Description

Technology Field

[0001] The present invention relates to a small-space automatic fire extinguishing device with a fire extinguishing agent and a pressurized gas separation type that can replenish pressurization by periodically injecting gas through a gas filling part without restrictions on the installation direction of the cylinder, and in particular, to a small-space automatic fire extinguishing device with a fire extinguishing agent and a pressurized gas separation type that can extinguish the internal volume of a small space such as a distribution board or a switchboard. Background Technology

[0002] Conventional automatic fire extinguishing devices for small spaces apply pressure; therefore, if the pressure of the pressurized nitrogen is too low or too high during the manufacturing process, or if a leak occurs during a leak test, the extinguishing agent and pressurized nitrogen become mixed during filling. This presents a problem that requires complete drainage, replacement of parts, and reassembly. Furthermore, while the weight of the extinguishing agent can be verified before pressurizing, the total weight is measured once the product is completed. Since the weights of the extinguishing agent and pressurized nitrogen are measured together, it is impossible to determine the exact amount of extinguishing agent used. Additionally, because the nitrogen is positioned above the extinguishing agent inside the container, there are restrictions on the installation direction, and without a pressure gauge, it is impossible to determine whether the nitrogen is pressurized inside.

[0003] As a conventional non-pressurized cylinder fire extinguishing device to overcome these limitations, for example, the one described in the patent document (Korean Registered Patent No. 10-2715836) has been proposed.

[0004] In the non-pressurized cylinder fire extinguishing device of the patent document, first, referring to FIG. 10, a discharge pipe (H), etc. is connected to both sides of a second flow path (324) formed in a nozzle (300). The discharge pipe (H) may be extended to face a space prone to fire or a device that causes fire. A piston (200) is located at the rear of the cylinder (100), and a fire extinguishing agent is filled in the first receiving portion (110) inside the cylinder (100).

[0005] Then, when the pressure generating unit (500), which receives a detection signal from the fire detection sensor, generates pressure using gas, etc., the gas generated by the pressure generating unit (500) is supplied to the insertion space (421) and the piston (200). At this time, the pressure generated by the gas generated by the pressure generating unit (500) is supplied to the insertion space (421), and the pressure generated by the gas supplied to the insertion space (421) is transmitted to the piston space (210) to pressurize the piston (200) forward. Then, as the piston (200) advances toward the nozzle (300), it pressurizes the fire extinguishing agent filled in the first receiving unit (110) toward the nozzle (300).

[0006] Next, referring to FIG. 11, when the pressure exerted by the fire extinguishing agent pressurized by the rise of the piston (200) is transmitted to the blocking part (334) by passing through the front side of the first flow path (322) of the nozzle (300), the blocking part (334) advances and opens the rear side of the first flow path (322) and the second flow path (324). Then, the fire extinguishing agent guided to the nozzle (300) is discharged to the outside through the second flow path (324) and the discharge pipe (H).

[0007] However, since the pressure generating unit (500) of the non-pressure cylinder fire extinguishing device of the patent document operates by receiving a detection signal from a fire detection sensor, the cylinder (100), as shown in identification number

[0033] of the patent document, is installed indoors, such as in a home or company, and can be installed in a large space with a high risk of fire, such as a kitchen in a home or a countertop in a restaurant. Therefore, even if a fire occurs inside a small space such as a distribution board or a distribution board, the pressure generating unit (500) does not operate because the sensor detecting the fire is located outside the distribution board or distribution board.

[0008] In addition, the inflator, which is the pressure generating part (500) of the patent document, requires the configuration of a piston (200), so there are many components and the mounting structure of the cylinder (100) is complex.

[0009] In addition, since a portion of the overpressure generated by the pressure generating unit (500) of the patent document is configured to be discharged to the outside through the overpressure prevention valve (450), it involves a large number of parts and a complex structure.

[0010] In particular, the inflator, which is the pressure generating part (500) of the patent document, cannot be filled in the event of a gas shortage and must be replaced itself, so it may be uneconomical in terms of maintenance.

[0011] To minimize the replacement of such unsuitable inflators, an external pressure supply unit (550) that supplies gas to the pressure supply unit instead of the pressure generating unit (500) can be provided as shown in FIG. 12.

[0012] However, since the external pressure supply unit (550) is located outside the cylinder (100), it occupies a large amount of space and is not suitable for small spaces. Prior art literature

[0013] Korean Registered Patent No. 10-2715836 The problem to be solved

[0014] The purpose of the present invention is to solve the aforementioned problems by providing a small-space automatic fire extinguishing device with a separated fire extinguishing agent and pressurized gas, which is compact regardless of installation direction, allows verification of the gas pressurization filling status, and offers excellent maintenance through pressurized gas refilling.

[0015] In addition, the present invention aims to solve the aforementioned problem by providing a fire extinguishing agent capable of verifying the filling state of the gas pressurization and a small-space automatic fire extinguishing device with a pressurized gas separation type. means of solving the problem

[0016] To achieve the aforementioned objective, the small-space automatic fire extinguishing device of the present invention, which separates the fire extinguishing agent and the pressurized gas, may include: a cylinder containing a fire extinguishing agent; a gas filling part installed on the front side of the cylinder; a fire extinguishing agent discharge part installed on the rear side of the cylinder; and a piston disposed on the inner wall of the cylinder at the rear side of the gas filling part, which separates the gas of the gas filling part from the fire extinguishing agent. Effects of the invention

[0017] The fire extinguishing agent and pressurized gas separation type small space automatic fire extinguishing device of the present invention has the following effects.

[0018] Because the fire extinguishing agent and pressurized nitrogen are perfectly separated, users can save on additional costs by specifying an appropriate maintenance cycle to replenish the pressurization through the gas charging unit.

[0019] In addition, if the pressurizing plunger is pressed, you can check for any leakage of nitrogen pressurization.

[0020] By adopting and combining a thermal sensing element using a glass bulb, it can be installed inside small spaces such as distribution boards or switchboards to quickly suppress fires inside.

[0021] By pressing the O-ring with a backup ring, not only is damage to the O-ring prevented, but uniform sealing performance can also be achieved even if the cylinder inner diameter tolerances differ.

[0022] The cylinder structure pressed by the backup ring allows for adjustment of the amount of compression on the inner wall of the cylinder after the product is pre-assembled without damaging the O-ring on the screw threads during assembly.

[0023] A piston is embedded in the fire extinguishing agent chamber, and if the glass bulb is damaged during a fire, pressurized nitrogen gas passes through the chamber and pushes the piston, allowing the entire amount of the extinguishing agent to be sprayed completely without leaving any residue.

[0024] When the pressurized gas (nitrogen) extinguishing agent is sprayed, the pressure decreases, but it is not sprayed along with the extinguishing agent and remains inside the extinguishing device. Brief explanation of the drawing

[0025] FIGS. 1 and 2 are an external perspective view and a cross-sectional view illustrating a small-space automatic fire extinguishing device with a fire extinguishing agent and pressurized gas separation type according to an embodiment of the present invention. Figure 3 is a cross-sectional view of the state in which gas is filled in Figure 2. FIGS. 4, FIGS. 5, and FIGS. 6 are enlarged cross-sectional views of the gas filling part, piston, and fire extinguishing agent discharge part of FIG. 3. FIG. 4a is a perspective view illustrating the guide ring of FIG. 4. FIGS. 7 and FIGS. 8 are an external perspective view and a cross-sectional view showing the glass bulb being broken and the extinguishing agent being discharged. FIG. 9 is an external perspective view illustrating a pressure gauge-equipped fire extinguishing agent and a pressurized gas separation type small space automatic fire extinguishing device. FIG. 10 is a cross-sectional view illustrating the state in which a conventional pressure generating unit generates pressure. FIG. 11 is a cross-sectional view illustrating the state in which the nozzle of FIG. 10 discharges a fire extinguishing agent. FIG. 12 is a cross-sectional view illustrating the state in which pressure is supplied to a pressure supply unit of another conventional embodiment. Specific details for implementing the invention

[0026] The embodiments described below are presented as examples to aid in understanding the invention, and it should be understood that the invention may be implemented with various modifications different from the embodiments described herein. However, in describing the invention, detailed descriptions and specific illustrations of related known functions or components are omitted if it is determined that such detailed descriptions or specific illustrations might unnecessarily obscure the essence of the invention. Furthermore, the attached drawings are not drawn to actual scale to aid in understanding the invention, and the dimensions of some components may be exaggerated.

[0027] The first and second terms used in this application may be used to describe various components, but the components should not be limited by the terms. The terms are used solely for the purpose of distinguishing one component from another.

[0028] Furthermore, the terms used in this application are used merely to describe specific embodiments and are not intended to limit the scope of the rights. The singular expression includes the plural expression unless the context clearly indicates otherwise. Terms such as “comprising,” “consisting of,” or “consisting of” in this application are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] FIGS. 1 and FIGS. 2 are an external perspective view and a cross-sectional view illustrating a small-space automatic fire extinguishing device with a fire extinguishing agent and pressurized gas separation type according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of FIG. 2 in a state where gas is filled.

[0030] Referring to FIGS. 1 to 3, the small space automatic fire extinguishing device (1) with a fire extinguishing agent and pressurized gas separation type according to the present embodiment may include a pipe-shaped cylinder (10). The inside of the cylinder (10) may include a fire extinguishing agent chamber (11) for holding a fire extinguishing agent.

[0031] As shown in FIGS. 2 and 3, front and rear female screw threads (12) (13) may be formed on the front and rear ends of the cylinder (10).

[0032] The small space automatic fire extinguishing device (1) with a fire extinguishing agent and pressurized gas separation type according to the present embodiment may include a gas filling part (20). The gas filling part (20) may be installed on the front side of the cylinder (10) as shown in FIGS. 2 and 3. Nitrogen may be used as the gas.

[0033] The gas filling unit (20) may include a hollow sheet body (21). As shown in FIG. 4, the sheet body (21) may include a large outer diameter body (21a), a front flange body (21b) and a small outer diameter body (21c) formed at the front and rear ends of the large outer diameter body (21a).

[0034] A male screw thread (21a') that is fastened to the front female screw thread (12) may be formed on the outer surface of the large external diameter body (21a).

[0035] On the inner surface of the outer diameter body (21a), a seat surface (21a') which is an inclined surface with a trapezoidal cross-section and a space for a filling chamber that serves as a filling passage (24) for pressure gas can be formed.

[0036] The front flange body (21b) may be a projection that engages with the front of the cylinder (10).

[0037] The outer diameter body (21c) may have a shape that protrudes forward from the rear end of the outer diameter body (21a). A female screw thread (25a) may be formed on the inner surface of the outer diameter body (21c).

[0038] An O-ring (26) can be installed near the corners of the outer diameter body (21a) and the front flange body (21b).

[0039] The gas filling unit (20) may include a guide ring (27) as shown in FIG. 4a. The guide ring (27) may be a track shape in which at least one or both sides of a hollow ring are chamfered. Accordingly, a male screw thread (25b) that is fastened to the female screw thread (25a) of the outer diameter body (21c) is formed on the circumferential surface of the guide ring (27), and the chamfered straight surface (27a) and the pressurizing plunger (28) can serve as a passage for gas to be introduced.

[0040] The gas filling unit (20) may include a pressurizing plunger (28). The rear side of the pressurizing plunger (28) may be movably positioned inside the guide ring (27). A mounting groove (29a) may be formed on the front outer surface of the pressurizing plunger (28) to which a sheet packing (29), described later, is mounted.

[0041] The gas filling unit (20) may include a spring (22). The spring (22) may be installed between the pressurizing plunger (28) and the guide ring (27). The spring (22) returns the pressurizing plunger (28), which has retracted when gas is filled, to its original forward position and can pressurize seal the seat packing (29) on the seat surface (21a').

[0042] The gas filling part (20) may include a seat packing (29) mounted in the mounting groove (29a). The seat packing (29) can open and close the seat surface (21a').

[0043] The small space automatic fire extinguishing device (1) with a fire extinguishing agent and pressurized gas separation type according to the present embodiment may include a fire extinguishing agent discharge part (30). The fire extinguishing agent discharge part (30) may be installed at the rear end of the cylinder (10).

[0044] The fire extinguishing agent discharge part (30) may include a hollow orifice body (31) as shown in FIG. 6.

[0045] A male screw thread (31a) that is fastened to the rear female screw thread (13) of the cylinder (10) may be formed on the front outer surface of the orifice body (31).

[0046] A female screw thread (31b) may be formed on the rear inner surface of the orifice body (31).

[0047] A rear body flange (31c) that engages with the rear end of the cylinder (10) may be formed on the rear outer surface of the orifice body (31).

[0048] An O-ring (32) can be installed near the corners of the orifice body (31) and the rear body flange (31c).

[0049] The fire extinguishing agent discharge unit (30) may include a bulb body (33). As shown in FIG. 6, the bulb body (33) may include a first bulb body (34) and a second bulb body (35).

[0050] The first bulb body (34) may include a first bulb body hollow body (34a). The first bulb body hollow body (34a) may have a male screw thread (34a') formed therein that is engaged with a female screw thread (31b).

[0051] The first bulb body (34) may include a first bulb body flange (34b). The first bulb body flange (34b) is formed at the rear end of the first bulb body hollow body (34a) and may be engaged with the rear body flange (31c).

[0052] The second bulb body (35) can be extended from the rear end of the first bulb body flange (34b) to form an external discharge slot (35a).

[0053] The fire extinguishing agent discharge unit (30) may include an orifice (36). The orifice (36) may be installed to be movable inside the orifice body (31) and the bulb body (33).

[0054] In the orifice (36), ejection holes (36a) of the extinguishing agent may be formed at predetermined intervals along the circumference in the form of a tube.

[0055] The fire extinguishing agent discharge unit (30) may include a movable holder (37). The front end of the movable holder (37) is integrally formed at the rear end of the orifice (36) and may be movably installed inside the bulb body (33).

[0056] The fire extinguishing agent discharge unit (30) may include a glass bulb (38) installed at the front and rear ends between the movable holder (37) and the bulb body (33). The glass bulb (38) can be broken in the event of a fire to release the restraint of the movable holder (37). A screw (39) is fastened to the rear end of the second bulb body (35) to stably maintain the fixation of the glass bulb (38).

[0057] The small space automatic fire extinguishing device (1) with a fire extinguishing agent and pressurized gas separation type according to the present embodiment may include a piston (40). As shown in FIGS. 2 and 3, the piston (40) may be positioned on the inner wall of the cylinder (10) at the rear side of the gas filling part (20). Due to this positioning of the piston (40), the gas chamber (15) and the fire extinguishing agent chamber (11) can be separated as shown in FIG. 3.

[0058] As shown in FIGS. 2, 3 and 5, the piston (40) may include an inverted U-shaped piston body (41) disposed on the outer surface of the rear end of the seat body (21).

[0059] The interior of the inverted U-shaped piston body (41) can serve as a chamber to be filled with gas.

[0060] In addition, the interior of the inverted U-shaped piston body (41) is formed to narrow in a stepped manner towards the rear, thereby increasing the concentration of gas pressure.

[0061] A piston body flange (42) facing the inner wall of the cylinder (10) may be formed at the front end of the inverted U-shaped piston body (41). That is, the piston body flange (42) may form a space between the inner wall of the cylinder (10) and the outer surface of the inverted U-shaped piston body (40). This space may be sized to allow the O-ring (44), described later, to be loosely inserted. This can prevent damage, etc., when inserting the O-ring (44).

[0062] The piston (40) may include an O-ring (43) placed between the inner wall of the cylinder (10) and the outer surface of the piston body (41). The O-ring (43) can seal the gas chamber (15) and the fire extinguishing agent chamber (11) to separate them.

[0063] The piston (40) may include a piston nut (44). The female thread (44a) of the piston nut (44) may be fastened to the male thread (41a) of the piston body (41).

[0064] The piston (40) may include a backup ring (45). The backup ring (45) can press the O-ring (43) against the piston body flange (42) of the inverted U-shaped piston body (41) as the piston nut (44) is tightened. Therefore, uniform sealing performance and excellent sealing power can be achieved even if the amount of pressure of the O-ring (43) changes and the inner diameter tolerance of the cylinder (10) is different.

[0065] Unlike the O-ring (43) which has a circular cross section, the backup ring (45) can be implemented as a square cross section ring to ensure uniform contact pressure.

[0066] The operation is explained below with reference to the above configuration and drawings.

[0067] Referring to FIGS. 1 and 2, the external perspective view and cross-sectional view illustrate the state in which a small space automatic fire extinguishing device (1) with a fire extinguishing agent and a pressurized gas separation type according to an embodiment of the present invention is assembled with the fire extinguishing agent contained in the fire extinguishing agent chamber (11).

[0068] In the state of Fig. 2, a small space automatic fire extinguishing device (1) is installed upright on the gas injector, and the pressurizing plunger (28) is pushed upward to open the seat surface (21a') and allow gas to flow and fill.

[0069] Figure 3 shows the state where the piston (40) is pushed as the gas is charged, applying pressure to the extinguishing agent.

[0070] After installing the small space automatic fire extinguishing device (1) of Fig. 3 in a small space, such as a distribution panel, if a fire occurs inside, the glass bulb (38) is broken as shown in Figs. 7 and 8 and the restraint of the movable holder (37) is removed, the gas is not discharged, and only the pressure of the gas is lowered, and the head of the piston (40) comes into close contact with the front of the orifice body (31), and the fire is suppressed by being ejected through the fire extinguishing agent discharge part (30) without leaving almost any residue of the fire extinguishing agent.

[0071] FIG. 9 is an external perspective view illustrating a pressure gauge-equipped fire extinguishing agent and a pressurized gas separation type small space automatic fire extinguishing device. The pressure gauge (50) is installed on the charging passage (24) so ​​that the gas charging status can be checked visually. A pressure gauge cover (51) can be placed around the exterior perimeter of the pressure gauge (50).

[0072] It should be added that the present invention is not limited to the specific preferred embodiments described above, and that anyone with ordinary knowledge in the art to which the invention pertains can make various modifications without departing from the essence of the invention as claimed in the claims, and that such modifications fall within the scope of the claims. Explanation of the symbols

[0073] 1: Small space automatic fire extinguishing device with separate fire extinguishing agent and pressurized gas 10: Cylinder 11: Fire extinguishing agent chamber 15: Gas chamber 20: Gas filling part 21: Seat body 21a: External diameter body 21a': Seat surface 21b: Front flange body 21c: Ex-external mirror body 22: Spring 24: Charging passage 26: O-ring 27: Guide ring 28: Pressurizing plunger 29: Sheet packing 30: Fire extinguishing agent discharge part 40: Piston 50: Pressure gauge

Claims

Claim 1 A cylinder (10) containing a fire extinguishing agent; a gas filling part (20) installed on the front side of the cylinder (10); and a fire extinguishing agent discharge part (30) installed on the rear side of the cylinder (10);The gas filling unit (20) includes a piston (40) disposed on the inner wall of the cylinder (10) at the rear side of the gas filling unit (20) and separating the gas of the gas filling unit (20) from the fire extinguishing agent, and the gas filling unit (20) includes a seat body (21) fastened to a female screw thread (12) at the front side of the cylinder (10), a guide ring (27) fastened to a female screw thread (25a) at the rear side of the seat body (12), a pressurizing plunger (28) with its rear side movably disposed inside the guide ring (27), a spring (22) installed between the pressurizing plunger (28) and the guide ring (27), and a seat packing (29) installed on the pressurizing plunger (28) to open and close the seat seat surface (21a') of the seat body (12), and the seat body (21) includes a large outer diameter body (21a) and the of the large outer diameter body (21a). It includes a front flange body (21b) and an outer diameter body (21c) formed at the front and rear ends, and the seat surface (21a') is an inclined surface with a trapezoidal cross-section on the inner circumference of the outer diameter body (21a), and a male screw thread (25b) that is fastened to a female screw thread (25a) is formed on the circumference of the guide ring (27), and there is a passage for gas to be introduced between the chamfered straight surface (27a) of the guide ring (27) and the pressurizing plunger (28), and the fire extinguishing agent discharge part (30) includes an orifice body (31) that is fastened to a female screw thread (13) on the rear end side of the cylinder (10), a bulb body (33) that is fastened to a female screw thread (31b) on the rear end side of the orifice body (31) and has an external discharge slot (35a) formed therein, and an orifice (36) that is movably installed inside the orifice body (31) and the bulb body (33). A small space automatic fire extinguishing device that separates fire extinguishing agent and pressurized gas, comprising a movable holder (37) formed integrally at the rear end of an orifice (36) and installed inside a bulb body (33), and a glass bulb (38) installed at the front and rear ends between the movable holder (37) and the bulb body (33), wherein the orifice (36) has a tube-shaped discharge hole (36a) for a fire extinguishing agent formed at predetermined intervals along its circumference. Claim 2 delete Claim 3 In claim 1, the piston (40) comprises an inverted U-shaped piston body (41) disposed on the rear outer surface of the seat body (21), an O-ring (43) placed between the inner wall of the cylinder (10) and the outer wall of the piston body (41), a piston nut (44) fastened to the male screw thread (41a) of the piston body (41), and a backup ring (45) that presses the O-ring (43) against the flange of the inverted U-shaped piston body (41) as the piston nut (44) is fastened, thereby forming a small space automatic fire extinguishing device for separating fire extinguishing agent and pressurized gas. Claim 4 delete

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