Fire-extinguishing apparatus

Abstract

To provide a fire extinguishing apparatus capable of suppressing spread of burning flames while reducing an amount of discharge of a fire extinguishing solution.SOLUTION: A fire extinguishing apparatus (100) includes: a fire extinguishing solution storage unit (10) where a fire extinguishing solution (80 and 81), which is a solution for extinguishing a fire, is stored; a discharge unit (30) for discharging the fire extinguishing solution 80 and 81) stored in the fire extinguishing solution storage unit (10); a flow rate adjusting unit (40) for adjusting a flow rate of the fire extinguishing solution (80 and 81) discharged from the discharge unit (30); and a control unit (50) for controlling the flow rate adjusting unit (40) so as to discharge the fire extinguishing solution (80 and 81) from the discharge unit (30) by a discharge amount pattern accompanying a preset lapse of time.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a fire extinguishing system that discharges a fire extinguishing liquid when a fire occurs. [Background technology]

[0002] In order to continue discharging extinguishing liquid at maximum flow rate using fire extinguishing equipment when a fire occurs, a sufficient space is required to secure the extinguishing liquid.

[0003] In addition, if a deep fire or a fire occurs in an area where water spraying is prevented, such as behind or inside a machine tool, even if the extinguishing liquid is continuously discharged at the maximum flow rate, there is a risk that the extinguishing liquid will not reach the back or inside, and effective fire extinguishing may not be possible.

[0004] To address such issues, the following conventional fire extinguishing equipment has been disclosed (see, for example, Patent Document 1). The conventional fire extinguishing equipment described in Patent Document 1 includes a solenoid valve that controls the supply of extinguishing liquid from a tank unit to a discharge section, and by controlling the solenoid valve, it is possible to intermittently discharge the extinguishing liquid. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2016-67515 A Summary of the Invention [Problem to be solved by the invention]

[0006] As in the conventional fire extinguishing equipment described in Patent Document 1, the amount of extinguishing liquid discharged can be reduced by intermittently discharging the extinguishing liquid, i.e., by repeatedly discharging and stopping the extinguishing liquid, the amount of extinguishing liquid discharged can be reduced. Also, even if a deep fire or a fire occurs in an area where water spraying is obstructed, wasteful consumption of extinguishing liquid can be reduced.

[0007] On the other hand, in the conventional fire extinguishing system described in Patent Document 1, there is a risk of the flames spreading when the discharge of the fire extinguishing liquid is stopped.

[0008] In addition, the conventional fire extinguishing equipment described in Patent Document 1 is intended for extinguishing fires, and the amount of extinguishing liquid discharged per unit time during discharge is the same whether the extinguishing liquid is discharged intermittently or continuously. Therefore, even if the extinguishing liquid is discharged intermittently, there is a risk that the extinguishing liquid will run out before a deep fire or a fire in an area obstructed by water spraying is completely extinguished.

[0009] Depending on the fire scene, it may be expected that the fire extinguishing equipment will be used to suppress the spread of the fire, instead of to completely extinguish the fire. In other words, it is possible to leave the full-scale fire extinguishing to the public fire department, and use the limited amount of extinguishing liquid stored in the fire extinguishing equipment to suppress the spread of the fire until the arrival of a fire engine or other vehicle.

[0010] The present disclosure has been made to solve the above-mentioned problems, and aims to obtain a fire extinguishing system that can suppress the spread of flames while reducing the amount of extinguishing liquid discharged. [Means for solving the problem]

[0011] The fire extinguishing equipment of the present disclosure comprises an extinguishing liquid storage section in which extinguishing liquid, which is a liquid for extinguishing fires, is stored, a discharge section which discharges the extinguishing liquid stored in the extinguishing liquid storage section, a flow rate adjustment section which adjusts the flow rate of the extinguishing liquid discharged from the discharge section, and a control section which controls the flow rate adjustment section so as to discharge the extinguishing liquid from the discharge section in a pre-set discharge amount pattern over time. Effect of the Invention

[0012] According to the present disclosure, it is possible to obtain a fire extinguishing system that can suppress the spread of flames while reducing the amount of extinguishing liquid discharged. [Brief description of the drawings]

[0013] [Figure 1] 1 is a diagram illustrating a first configuration example of a fire extinguishing facility according to a first embodiment of the present disclosure. [Diagram 2] FIG. 4 is a diagram illustrating a second configuration example of the fire extinguishing system according to the first embodiment of the present disclosure. [Diagram 3] FIG. 2 is a diagram illustrating examples of extinguishing liquids used in the first embodiment of the present disclosure, and also illustrating fire targets suitable for each extinguishing liquid. [Figure 4] 2 is a flowchart showing how the fire extinguishing system shown in FIG. 1 discharges extinguishing liquid in a predetermined discharge amount pattern. [Diagram 5] FIG. 11 is a diagram illustrating a configuration example of a fire extinguishing system according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, preferred embodiments of the fire extinguishing system of the present disclosure will be described with reference to the drawings. The fire extinguishing equipment disclosed herein has a technical feature of suppressing the spread of fire while reducing the amount of extinguishing fluid discharged by discharging extinguishing fluid in a pre-set discharge pattern over time.

[0015] Embodiment 1 FIG. 1 is a diagram showing a first configuration example of a fire extinguishing system 100 according to the first embodiment of the present disclosure.

[0016] 1, the extinguishing liquid storage unit 10 includes a plurality of tanks 60, and each tank 60 is filled with an extinguishing liquid 80, which is a liquid for extinguishing a fire. Specific examples of the extinguishing liquid 80 will be described later.

[0017] The discharge section 30 is, for example, a sprinkler head installed near the ceiling of the facility, and discharges the extinguishing liquid 80 stored in the extinguishing liquid storage section 10.

[0018] The pressurized gas container 20 is a tank that stores nitrogen gas as a pressurized gas, and is connected to the extinguishing liquid storage unit 10 via a pressurized gas introduction pipe 75. The pressurized gas container 20 releases the pressurized gas into the extinguishing liquid storage unit 10 when a start valve 21 is operated.

[0019] The piping 70 has a hollow circular cross section, with a base end connected to the fire extinguishing liquid storage section 10 and a tip end connected to the discharge section 30. In addition, an electrically operated control valve 11 is provided on the base end side of the piping 70.

[0020] When the start valve 21 and the control valve 11 are opened, the extinguishing liquid 80 is discharged from the discharge portion 30 .

[0021] The pipe 70 branches into a first pipe 70A and a second pipe 70B at a point P1 on the base end side, and merges at a point P2 on the tip end side.

[0022] The first pipe 70A is provided with a selection valve 12A, a constant flow valve 13A, a flow switch 14A, and a check valve 15A. Similarly, the second pipe 70B is provided with a selection valve 12B, a constant flow valve 13B, a flow switch 14B, and a check valve 15B.

[0023] The selection valves 12A and 12B are devices that electrically control the opening and closing of the valves. The selection valves 12A and 12B are controlled so that if one of them is open, the other is closed. This allows the selection valves 12A and 12B to switch the discharge path of the fire extinguishing liquid 80 to the first pipe 70A or the second pipe 70B.

[0024] The constant flow valves 13A and 13B are valves used to keep the flow rate of the extinguishing liquid 80 constant, and have the function of maintaining a set constant flow rate. In the first embodiment, the constant flow valves 13A and 13B are set to discharge the extinguishing liquid 80 at different flow rates. For example, the constant flow valve 13A is set to discharge the extinguishing liquid 80 at a flow rate close to the maximum flow rate, and the constant flow valve 13B is set to discharge the extinguishing liquid 80 at a flow rate less than the discharge flow rate of the constant flow valve 13A.

[0025] The flow switches 14A and 14B are switches that detect the flow rate of the fire extinguishing liquid 80 flowing.

[0026] The check valves 15A and 15B keep the flow of the extinguishing liquid 80 in a fixed direction and prevent backflow.

[0027] In the first embodiment, the flow rate adjusting unit 40 is configured by the above-mentioned control valve 11, selection valves 12A and 12B, constant flow rate valves 13A and 13B, flow switches 14A and 14B, and check valves 15A and 15B. The flow rate adjusting unit 40 has such a configuration and adjusts the flow rate of the extinguishing liquid 80 discharged from the discharge unit 30.

[0028] The control unit 50 is connected to the start valve 21 and the flow rate adjustment unit 40 via signal lines. With regard to the connection with the flow rate adjustment unit 40, the control unit 50 is specifically connected to the control valve 11 and the selection valves 12A and 12B via signal lines, and controls these valves. The control unit 50 is also connected to the flow switches 14A and 14B via signal lines, and monitors whether there are any abnormalities in the flow rates detected by the flow switches 14A and 14B.

[0029] The control unit 50 controls the flow rate adjustment unit 40 so as to release the extinguishing liquid 80 from the release unit 30 in a preset release amount pattern over time. That is, by setting a release amount pattern over time in advance, the extinguishing liquid 80 can be released from the release unit 30 in an amount according to the release amount pattern. A specific example of release according to this release amount pattern will be described later.

[0030] FIG. 2 is a diagram illustrating a second configuration example of the fire extinguishing system according to the first embodiment of the present disclosure.

[0031] In the fire extinguishing equipment 100A shown in Fig. 2, the extinguishing liquid storage unit 10 has a water supply tank 65 and a water supply device 66 instead of the configuration of the multiple tanks 60 shown in Fig. 1. In the extinguishing liquid storage unit 10, in the event of a fire, the extinguishing liquid 80 stored in the water supply tank 65 is pumped up by the water supply device 66, thereby supplying the extinguishing liquid 80 to the piping 70.

[0032] Except for the configuration of the extinguishing liquid storage section 10, the fire extinguishing system 100A shown in FIG. 2 is the same as the fire extinguishing system 100 shown in FIG.

[0033] FIG. 3 is a diagram illustrating examples of extinguishing liquids used in the first embodiment of the present disclosure, and also illustrating fire targets suitable for each extinguishing liquid.

[0034] In the first embodiment, the extinguishing liquid 80 may be water, water containing a wetting agent, a strengthened liquid extinguishing agent, a neutral strengthened liquid extinguishing agent, a foam extinguishing agent, or an inorganic high-viscosity liquid.

[0035] Water has a high specific heat and heat of vaporization and has a high cooling effect, but is not suitable for oil fires. Water is effective in extinguishing Type A fires, which are fires in which paper, wood, cloth, etc. are burning, or fires caused by general combustible materials.

[0036] Water containing wetting agents is ordinary water to which highly penetrating and reignition-preventing ingredients have been added, and in addition to the cooling effect of water, it also has a penetrating effect and can suppress the combustion chain reaction. Water containing wetting agents is effective in extinguishing the above-mentioned Type A fires.

[0037] Strengthened liquid extinguishing agents are aqueous solutions whose main component is potassium carbonate, with a freezing point of -20 degrees Celsius or lower, and can extinguish fires by cooling and suppressing them, preventing re-ignition. Strengthened liquid extinguishing agents are effective in extinguishing Type A fires, as well as Type B fires, which are fires caused by the burning of gasoline, alcohol, etc., and tempura oil fires.

[0038] Neutral reinforced liquid extinguishing agents have a freezing point of -20 degrees Celsius or less and have excellent penetration properties. In addition to the above-mentioned A and B fires, neutral reinforced liquid extinguishing agents are effective in extinguishing the burning of resins or fibers that are difficult to extinguish.

[0039] Foam fire extinguishing agents work by cooling the burning material and smothering it by covering it, and are effective in extinguishing oil fires such as gasoline, kerosene, and alcohol.

[0040] High-viscosity inorganic liquids are agents that have the same fire-extinguishing properties as water, and because of their high adhesiveness, they can be adsorbed onto the surface of objects. As a result, high-viscosity inorganic liquids have the effect of reducing fire damage and delaying the ignition of flying sparks.

[0041] In addition, inorganic high-viscosity liquids are effective in extinguishing deep-seated fires because they can create a layer of water on the surface to prevent air from entering and suppress combustion. In addition, inorganic high-viscosity liquids are effective in extinguishing fires caused by flying sparks because they create a layer of water on the surface to prevent ignition by flying sparks.

[0042] Next, an example of the operation of the fire extinguishing system 100 shown in Fig. 1 will be described. Note that the embodiment described below can also be applied to the fire extinguishing system 100A shown in Fig. 2.

[0043] FIG. 4 is a flow chart when the fire extinguishing system 100 shown in FIG. 1 discharges the fire extinguishing liquid 80 in a predetermined discharge amount pattern.

[0044] 4 shows an example of an operation in which the extinguishing liquid 80 is discharged at two flow rates, a first set flow rate and a second set flow rate, as a discharge rate pattern. Here, the first set flow rate is the discharge flow rate of the constant flow valve 13A, i.e., a flow rate close to the maximum flow rate. On the other hand, the second set flow rate is the discharge flow rate of the constant flow valve 13B, i.e., a flow rate less than the first set flow rate.

[0045] In the event of a fire, in response to an operation by a disaster prevention officer or a control signal from a fire receiver (not shown), the control unit 50 opens the start valve 21 to allow pressurized gas to be supplied to the fire extinguishing liquid storage unit 10.

[0046] When pressurized gas is supplied to the extinguishing liquid storage unit 10, the inside of the tank 60 of the extinguishing liquid storage unit 10 becomes pressurized, and the extinguishing liquid 80 becomes capable of being discharged.

[0047] Then, in step S101, the control unit 50 sets the selection valves 12A and 12B and opens the control valve 11 so that the extinguishing liquid 80 is discharged through the first piping 70A. As a result, the extinguishing liquid 80 is discharged from the discharge unit 30 at the first set flow rate, which is the flow rate after adjustment by the constant flow valve 13A.

[0048] In step S102, the control unit 50 determines whether a first set time, which is a time set in advance, has elapsed since starting the release at the first set flow rate. If the first set time has not elapsed, the control unit 50 returns the process to step S101 and continues the release at the first set flow rate. On the other hand, if the first set time has elapsed, the control unit 50 advances the process to step S103.

[0049] In step S103, the control unit 50 controls the selection valves 12A and 12B of the flow rate adjustment unit 40 to switch the release path from the first pipe 70A to the second pipe 70B. As a result, the release amount of the extinguishing liquid 80 changes from the first set flow rate to the second set flow rate, which is the flow rate after adjustment by the constant flow rate valve 13B, and the extinguishing liquid 80 is released from the release unit 30 at the second set flow rate.

[0050] In step S104, the control unit 50 determines whether a second set time, which is a pre-set time, has elapsed since the start of the release at the second set flow rate. If the second set time has not elapsed, the control unit 50 returns the process to step S103 and continues the release at the second set flow rate.

[0051] On the other hand, if the second set time has elapsed, the control unit 50 returns the process to step S101. As a result, the extinguishing liquid 80 is discharged at the first set flow rate instead of the second set flow rate.

[0052] The control unit 50 repeats steps S101 to S104 until the extinguishing liquid 80 in the extinguishing liquid storage unit 10 runs out.

[0053] In the example of Fig. 4, the release is explained as being performed at the first set flow rate and the second set flow rate, but the flow rate can be adjusted to any value by adjusting the constant flow rate valve 13A and the constant flow rate valve 13B. Also, the first set time and the second set time shown in the example of Fig. 4 can be designed as desired. In other words, various patterns can be adopted as the release amount pattern.

[0054] In the first embodiment, the pipe 70 is branched midway to form a two-system pipe configuration of the first pipe 70A and the second pipe 70B, but it may be branched into three or more systems. Also, in the first embodiment, it has been described that the discharge flow rate from the discharge section 30 is changed by using the constant flow valve 13A and the constant flow valve 13B, but if a valve capable of dynamically changing the flow rate is used, it may be a single system.

[0055] Also, instead of the selection valves 12A and 12B, a three-way valve controllable by the control unit 50 may be provided at point P1 of the pipe 70 to switch the release path to either the first pipe 70A or the second pipe 70B.

[0056] Also, a camera or a sensor may be installed as a detection unit in a location where there is a risk of a fire occurring, and when a fire actually occurs, the control unit 50 may control the flow rate adjustment unit 40 based on the monitoring results of the camera or the sensor. In this case, the control unit 50 is provided with a communication unit for directly or indirectly acquiring the monitoring results from the camera or the sensor.

[0057] In this case, when the control unit 50 obtains a monitoring result indicating that the flame has spread, it can increase the amount of extinguishing liquid 80 discharged by discharging the liquid at the first set flow rate for a while. On the other hand, when the control unit 50 obtains a monitoring result indicating that the flame has become smaller, it can reduce the amount of extinguishing liquid 80 discharged by discharging the liquid at the second set flow rate for a while. The control unit 50 may also obtain an analysis result by AI (Artificial Intelligence) as a monitoring result, and increase or decrease the amount of discharge based on the analysis result.

[0058] The fire extinguishing system 100 may also include such a camera or sensor as a detection unit. In this case, the detection unit may be disposed in the discharge unit 30, and an object existing in the same direction as the discharge direction of the fire extinguishing liquid 80 may be set as a detection target.

[0059] 1 may be miniaturized and the fire extinguishing equipment 100 may be stored inside a housing having an opening and closing door. In this case, the parts shown in FIG. 1 may be stored in a housing having a height of 1400 mm, a width of 700 mm, and a depth of 250 mm. In this case, rubber hoses are used for the piping 70 and the pressurized gas introduction pipe 75. The discharge part 30 is miniaturized to an extent that a disaster prevention officer can hold it and discharge it toward the location of the fire.

[0060] The features of the fire extinguishing system 100 in the first embodiment can be summarized as follows: the fire extinguishing system 100 has the following configuration and can achieve the following effects.

[0061] The fire extinguishing system 100 includes an extinguishing liquid storage unit 10 in which an extinguishing liquid 80, which is a liquid for extinguishing a fire, is stored, and a discharge unit 30 that discharges the extinguishing liquid 80 stored in the extinguishing liquid storage unit 10. The fire extinguishing system 100 also includes a flow rate adjustment unit 40 that adjusts the flow rate of the extinguishing liquid 80 discharged from the discharge unit 30, and a control unit 50 that controls the flow rate adjustment unit 40 so that the extinguishing liquid 80 is discharged from the discharge unit 30 in a preset discharge amount pattern over time.

[0062] Conventional fire extinguishing systems continue to discharge extinguishing liquid at the maximum discharge amount, whereas the fire extinguishing system 100 in the first embodiment can discharge extinguishing liquid at or near the maximum discharge amount based on a discharge amount pattern according to the passage of time, thereby making it possible to reduce consumption of the extinguishing liquid 80.

[0063] In addition, the fire extinguishing system 100 can suppress the spread of the fire. In addition, even if the fire extinguishing system 100 does not suppress or extinguish the fire, it can suppress the spread of the fire while buying time until the arrival of a public fire department.

[0064] Therefore, the fire extinguishing system 100 in the first embodiment can suppress the spread of flames while reducing the amount of extinguishing liquid 80 discharged.

[0065] Moreover, the fire extinguishing system 100 in the first embodiment further includes a detection unit that monitors the spread of flames when a fire occurs. The control unit 50 controls the flow rate adjustment unit 40 based on the monitoring result by the detection unit.

[0066] Therefore, the fire extinguishing system 100 can adjust the discharge amount according to the state of the fire.

[0067] Moreover, the fire extinguishing system 100 is housed inside a housing having an opening and closing door. Therefore, the fire extinguishing system 100 can be provided as a packaged fire extinguishing system that can be easily installed in a required location.

[0068] In addition, the fire extinguishing system 100 includes a first pipe 70A and a second pipe 70B having different discharge flow rates. The control unit 50 switches the discharge path to the first pipe 70A or the second pipe 70B, thereby discharging the extinguishing liquid 80 from the discharge unit 30 in a set discharge amount pattern.

[0069] In order to switch the release path, in the first embodiment, a selection valve 12A is provided in the first pipe 70A, and a selection valve 12B is provided in the second pipe 70B. The control unit 50 switches the release path by performing exclusive opening and closing control on the selection valves 12A and 12B so that only one of them is in an open state.

[0070] Alternatively, instead of the selection valves 12A and 12B, a three-way valve is provided at point P1, which is a branch point of the first pipe 70A and the second pipe 70B. The control unit 50 controls the three-way valve so that either the first pipe 70A or the second pipe 70B becomes the discharge path.

[0071] In this way, by providing a three-way valve instead of the selection valves 12A and 12B, the switching of the release path performed by the two selection valves 12A and 12B can be performed by a single three-way valve, thereby reducing the number of parts.

[0072] Also, at point P2, a three-way valve capable of being electronically controlled may be used to make the path selectable. When extinguishing liquid 80 flows, for example, through first piping 70A, control unit 50 controls the three-way valve at point P2 to prevent extinguishing liquid 80 from flowing into the path of first piping 70B.

[0073] When a three-way valve is provided at point P2 in this manner, the check valves 15A and 15B shown in FIG. 1 or FIG. 2 may be unnecessary.

[0074] Furthermore, regardless of whether or not a three-way valve is provided at point P2, the check valves 15A and 15B may be located closer to point P2 than the positions shown in Fig. 1 or 2, just before the junction. Alternatively, new check valves may be provided on each of the first pipe 70A and the second pipe 70B just before the junction. This makes it possible to prevent the extinguishing liquid 80 from flowing into the second pipe 70B, for example, when the extinguishing liquid 80 is flowing in the first pipe 70A.

[0075] Embodiment 2 In the first embodiment, a mode in which one type of extinguishing liquid is used has been described, whereas in the second embodiment, a mode in which a plurality of extinguishing liquids are used in a switchable manner will be described.

[0076] FIG. 5 is a diagram showing a configuration example of a fire extinguishing facility 100B according to the second embodiment of the present disclosure.

[0077] 5, the extinguishing liquid storage unit 10 is composed of two storage units 10A and 10B, where the storage unit 10A has a plurality of tanks 60A, and the storage unit 10B has a plurality of tanks 60B. The tanks 60A and 60B are filled with different types of extinguishing liquids 80A and 80B, respectively.

[0078] As for the configuration of the piping 70, in the first embodiment, as shown in Fig. 1, the piping 70 branches into the first piping 70A and the second piping 70B at point P1 on the base end side and merges at point P2 on the tip end side. On the other hand, in the second embodiment, as shown in Fig. 5, the storage unit 10A and the base end side of the first piping 70A are directly connected, and the storage unit 10B and the base end side of the second piping 70B are directly connected. In the second embodiment, the first piping 70A and the second piping 70B are merged at point P3 on the tip end side.

[0079] Furthermore, since fire extinguishing system 100B of embodiment 2 has two storage units, storage unit 10A and storage unit 10B each include a pressurized gas container, a start valve, a pressurized gas introduction pipe, and a control valve.

[0080] That is, the fire extinguishing system 100B includes a pressurized gas container 20A, a start valve 21A, a pressurized gas introduction pipe 75A, and a control valve 11A corresponding to the storage unit 10A. The fire extinguishing system 100B also includes a pressurized gas container 20B, a start valve 21B, a pressurized gas introduction pipe 75B, and a control valve 11B corresponding to the storage unit 10B.

[0081] Furthermore, the flow rate adjustment unit 40 of the second embodiment does not have the selection valves 12A and 12B described in the first embodiment, and the release path is switched by the control valves 11A and 11B.

[0082] The control unit 50A of the second embodiment is electrically connected to the start valve 21A, the control valve 11A, the start valve 21B, and the control valve 11B via signal lines. The control unit 50A controls the opening and closing of each of these valves, thereby switching between discharging the extinguishing liquid 80A and discharging the extinguishing liquid 80B.

[0083] The control unit 50A can release the extinguishing liquid 80A from the release unit 30 by opening the pair of the start valve 21A and the control valve 11A and closing the pair of the start valve 21B and the control valve 11B. On the other hand, the control unit 50A can release the extinguishing liquid 80B from the release unit 30 by closing the pair of the start valve 21A and the control valve 11A and opening the pair of the start valve 21B and the control valve 11B.

[0084] In addition, the control unit 50A can control the flow rate adjustment unit 40 in accordance with a preset release pattern over time, thereby repeatedly releasing the extinguishing liquid 80A and the extinguishing liquid 80B at preset set times and flow rates.

[0085] That is, the flow rate adjusting unit 40 of the second embodiment can select one of the storage units 10A and 10B by controlling the opening and closing of the control valves 11A and 11B based on the control from the control unit 50. Then, the flow rate adjusting unit 40 can supply the extinguishing liquid stored in the selected storage unit to the release unit 30.

[0086] In addition, the first piping 70A may be branched along the way to form a piping configuration of two or more systems, as in embodiment 1, and the second piping 70B may also be branched along the way to form a piping configuration of two or more systems, as in embodiment 1.

[0087] Regarding this piping configuration, the first piping 70A shown in Fig. 5 is branched downstream of the control valve 11A to form a plurality of branch pipings, as in the first embodiment, and a selection valve, a constant flow valve, a flow switch, and a check valve are disposed in each of these branch pipings. In this case, the flow rates of the constant flow valves disposed in each branch piping are set to be different from each other, so that the extinguishing liquid 80A can be discharged according to a specified discharge amount pattern with varying strength, as described in the first embodiment. Here, the first piping 70A has been described, but the same is true for the second piping 70B.

[0088] In addition, in a mode in which each of the first pipes 70A and 70B is further branched, as described in the first embodiment, a three-way valve may be used instead of the selection valve in order to reduce the number of parts.

[0089] Also, similar to the aspect described in embodiment 1, an electronically controllable three-way valve may be provided at point P3 shown in FIG. 5 so that when extinguishing liquid 80 is flowing in one pipe, for example, first pipe 70A, the extinguishing liquid 80 is prevented from flowing to the other pipe, for example, second pipe 70B.

[0090] When a three-way valve is provided at point P3 in this manner, the check valves 15A and 15B shown in FIG. 5 may be unnecessary.

[0091] Furthermore, regardless of whether or not a three-way valve is provided at point P3, the check valves 15A and 15B may be located closer to point P3 than the positions shown in Fig. 5, immediately before the junction. Alternatively, new check valves may be provided on each of the first pipe 70A and the second pipe 70B immediately before the junction. This makes it possible to prevent, for example, when the extinguishing liquid 80A is flowing in the first pipe 70A, from flowing into the second pipe 70B.

[0092] The features of the fire extinguishing system 100A according to the second embodiment can be summarized as follows: The fire extinguishing system 100A has the following configuration and can achieve the following effects.

[0093] In the second embodiment, the fire-extinguishing liquid storage section 10 is composed of a plurality of storage sections 10A, 10B, and each of the storage sections 10A, 10B stores a different type of fire-extinguishing liquid 80A, 80B, respectively.

[0094] The flow rate adjustment unit 40 selects one of the multiple storage units 10A, 10B based on control from the control unit 50, and supplies the extinguishing liquid stored in the selected storage unit to the release unit 30.

[0095] Therefore, a plurality of extinguishing fluids 80A, 80B can be discharged alternately according to a preset pattern of discharge amounts over time.

[0096] Furthermore, the control unit 50A may control the flow rate adjustment unit 40 based on the monitoring results from a camera or a sensor, as described in the first embodiment. In this case, the control unit 50A identifies the location of the fire, identifies the cause of the fire based on the types of equipment, materials, etc. installed at the fire location, and selectively releases the extinguishing liquid appropriate for the cause.

[0097] Similarly to fire extinguishing equipment 100 of the first embodiment, each part of fire extinguishing equipment 100B of the second embodiment may be made compact, and fire extinguishing equipment 100B may be stored inside a housing having an opening and closing door. [Explanation of symbols]

[0098] 10 extinguishing liquid storage section, 10A, 10B storage section, 30 release section, 40 flow rate adjustment section, 50, 50A control section, 80, 80A, 80B extinguishing liquid, 100, 100A, 100B extinguishing equipment.

Claims

1. a fire extinguishing liquid storage section in which a fire extinguishing liquid is stored; A discharge section that discharges the extinguishing liquid stored in the extinguishing liquid storage section; A flow rate adjusting unit that adjusts the flow rate of the extinguishing liquid discharged from the discharge unit; a control unit that controls the flow rate adjustment unit so as to cause the extinguishing liquid to be discharged from the discharge unit in a previously set discharge amount pattern over time; Equipped with fire extinguishing equipment.

2. A detection unit that monitors the spread of flames when a fire occurs is further provided, The control unit controls the flow rate adjustment unit based on a monitoring result by the detection unit. The fire extinguishing system according to claim 1.

3. The extinguishing liquid storage unit is composed of a plurality of storage units, each of which stores a different type of extinguishing liquid, The flow rate adjusting unit further selects one of the plurality of storage units based on the control from the control unit, and supplies the extinguishing liquid stored in the selected storage unit to the discharge unit. The fire extinguishing system according to claim 1 or 2.

4. The fire extinguishing equipment is housed inside a housing having an opening and closing door. The fire extinguishing system according to claim 1 or 2.

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