JP2020146436A - Fire extinguisher and vehicle equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire extinguishing device having both a pressurized type and a pressure accumulating type, and a vehicle equipped with the fire extinguishing device. SOLUTION: A drug container 21 filled with a fire extinguishing agent, a pressure container 22 filled with a gas for pressurizing the inside of the drug container 21, and an electric valve 21a for opening a discharge port of the drug container 21. , An initiator 22a for opening the discharge port of the pressure container 22, a nozzle 24 installed in the engine room 13, a pipe 27 connecting the discharge port of the drug container 21 and the nozzle 24, and a pipe 27 in the engine room 13. After the initiator 22a is activated, it includes a temperature sensor 25 for detecting the temperature and a control means 23 which is electrically connected to the temperature sensor 25 and operates at least the initiator 22a based on the detection result of the temperature sensor 25. The pressure of the gas supplied from the pressurized container 22 is stored in the drug container 21 until the electric valve 21a operates with a time lag and the discharge port of the drug container 21 is opened. [Selection diagram] Fig. 2

Description

The present invention relates to a fire extinguishing device having the characteristics of both a pressure type and a pressure accumulation type, and a vehicle equipped with the fire extinguishing device.

A general fire extinguisher is mainly attached to a drug container filled with a fire extinguishing agent, a lever for opening the discharge port of the drug container, a hose connected to the discharge port of the drug container, and the tip of the hose. It is equipped with a nozzle. When the lever is operated, the discharge port of the drug container is opened, and the fire extinguishing drug is sent from the opening port to the hose and the nozzle by the internal pressure of the drug container.

General fire extinguishers are classified into a pressurized type and a pressure accumulating type based on the difference in the method of applying internal pressure to the drug container. The pressurized fire extinguisher includes a pressurized container separate from the drug container. The pressurized container is filled with a gas for pressurizing the inside of the drug container. When the lever of the pressurized fire extinguisher is operated, the pressurized container and the drug container are opened at the same time. The gas released from the pressurized container raises the internal pressure of the drug container while stirring the fire extinguishing agent. On the other hand, the pressure-accumulation type fire extinguisher raises the internal pressure of the drug container by filling the drug container with gas in advance.

Here, Japan joined the "United Nations Mutual Recognition Agreement for Type Approval of Vehicles and Devices (1958 Agreement)" in 1998. As of June 2014, the 1958 Agreement provides for 132 rules (UN / ECE rules) on the structure and equipment of automobiles. Of these, Rule No. R107 “Structure of a double-decker bus” stipulates that a fire extinguishing device satisfying a predetermined performance condition should be installed in the engine room of the bus. The basic structure of the fire extinguisher described above has been adopted for the conventional fire extinguisher for the engine room of a bus.

For example, Japanese Patent Application Laid-Open No. 8-215333 (Patent Document 1) discloses a fire extinguisher for an engine room of a bus that employs the basic structure of a pressurized fire extinguisher. The fire extinguishing device of Patent Document 1 is configured to supply the fire extinguishing agent in the chemical container to the nozzle by the air pressure of the air tank. The air tank may also be used as an air tank used for a bus brake.

Further, Japanese Patent Application Laid-Open No. 5-18550 (Patent Document 2) discloses a fire extinguisher for an engine room of a bus using a general fire extinguisher as it is. The fire extinguishing device of Patent Document 2 includes an alarm device and a fire extinguishing operation switch in the driver's seat of the bus. The bus driver manually operates the fire extinguishing operation switch based on the alarm issued from the alarm device. As a result, the lever of the fire extinguisher installed in the engine room is automatically operated.

Japanese Unexamined Patent Publication No. 8-215333 Jikkenhei 5-18550

<Pressurized problem>
The basic structure of a pressurized fire extinguisher has a problem that sufficient pressure cannot be obtained when it is used in a fire extinguisher for a bus engine room. The first reason is that in the pressurized fire extinguisher, the discharge port of the drug container is opened at the same time when the gas supply by the pressurized container is started. Therefore, the pressure of the gas supplied into the drug container is lost by opening the discharge port of the drug container. Second, the bus is designed so that there is no extra space, which limits the space for mounting the fire extinguisher. Therefore, the volume and number of pressure vessels are limited. Thirdly, the engine room of the bus is located at the rearmost part of the vehicle, and it is not always possible to install a drug container and a pressure container near the engine room. If the chemical container and the pressurized container are installed far from the engine room, the piping to the nozzle becomes long, and the pressure is lost before the fire extinguishing agent reaches the nozzle. For this reason, in the basic structure of the pressurized fire extinguisher, the pressure required to release a sufficient fire extinguishing agent cannot be obtained, and the fire generated in the engine room of the bus cannot be extinguished in a short time. With the basic structure of a pressurized fire extinguisher, it is difficult to clear the conditions of the fire extinguishing test specified in UN / ECE Regulation No. R107.

<Problem of accumulator type>
As a result of diligent studies by the present inventors, it has been found that it is effective to set the internal pressure of the drug container to at least 1 MPa or more in order to clear the conditions of the fire extinguishing test specified in UN / ECE Rule No. R107. .. By adopting the basic structure of a pressure-accumulation type fire extinguisher, it is possible to set the internal pressure of the drug container to 1 MPa or more in advance. However, if the internal pressure of the drug container is set to 1 MPa or more, the fire extinguishing device will be subject to the Japanese High Pressure Gas Safety Act. Therefore, it is not realistic to use a chemical container whose pressure is accumulated to 1 MPa or more for the fire extinguishing device for the engine room of the bus.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a fire extinguishing device having the characteristics of both a pressure type and a pressure accumulation type, and a vehicle equipped with the fire extinguishing device.

(1) In order to achieve the above object, the fire extinguishing device of the present invention includes a drug container filled with a fire extinguishing agent, a pressurized container filled with a gas for pressurizing the inside of the drug container, and the drug container. A first operating means for opening the discharge port of the pressure container, a second operating means for opening the discharge port of the pressurized container, a nozzle installed in a protective zone to be extinguished, and the drug container. A pipe that connects the discharge port and the nozzle, a detection means that detects at least one of heat, smoke, and flame generated in the protection zone, and a detection means that is electrically connected to the detection means to detect the detection means. Based on the result, the first operating means operates with a time lag after the second operating member operates, including at least a control means for operating the second operating member, and the discharge port of the drug container opens. Until this is done, the pressure of the gas supplied from the pressurized container is configured to be stored in the drug container.

(2) Preferably, the fire extinguishing device of (1) is provided with an electric valve as the first operating means, and the control means operates the electric valve based on the passage of time.

(3) Preferably, the fire extinguishing device of (1) is provided with a sealing plate as the first operating means, and the sealing plate is destroyed due to the pressure in the drug container.

(4) Preferably, the fire extinguishing device of (1) is provided with a rupture disk as the first operating means, and the rupture disk bursts due to the pressure in the drug container.

(5) Preferably, the fire extinguishing device of (1) is provided with an initiator as the first operating means, and the control means ignites the initiator based on the passage of time.

(6) Preferably, the fire extinguishing device of (1) is provided with an initiator as the second operating means, and the control means ignites the initiator based on the detection result of the detection means.

(7) Preferably, in any of the fire extinguishing devices (1) to (6), the drug container is operated between the operation of the second operating member and the opening of the discharge port of the drug container. The pressure inside reaches 1 MPa or more.

(8) Preferably, the fire extinguishing device according to (7) is provided with a plurality of the pressurized containers having an internal volume of 1 deciliter or less.

(9) Preferably, in any of the fire extinguishing devices (1) to (8) above, the fire extinguishing agent filled in the drug container is a powder containing 90% or more of ammonium phosphate.

(10) Preferably, in any of the fire extinguishing devices (1) to (9), the nozzle includes a divergent internal space and a slit-shaped injection port that opens at the end of the internal space. The injection port has a constant width from one end to the other end.

(11) Preferably, in any of the fire extinguishing devices (1) to (9), the nozzle includes a divergent internal space and a slit-shaped injection port that opens at the end of the internal space. The width of the central part of the injection port is wider than the width of the other parts.

(12) Preferably, in any of the fire extinguishing devices (1) to (11), an operation panel electrically connected to the control means is further included, and the operation panel visually and visually indicates the occurrence of a fire. / Or a notification means for audibly notifying and an activation means for outputting a signal to the control means, and the control means at least the second based on the signal output from the operation panel. Operate the operating member.

(13) In order to achieve the above object, the vehicle of the present invention is a vehicle equipped with the fire extinguishing device described in the above (12), and the nozzle is installed in the protection zone inside the vehicle. And the operation panel is arranged near the driver's seat.

(14) Preferably, the vehicle of (13) is a bus or a double-decker bus, and the protected area is an engine room.

(15) Preferably, the protected section of (14) includes at least one of a graphite purifying device room, a preheater room, and a battery room in addition to the engine room.

(16) In order to achieve the above object, the fire extinguishing device of the present invention corresponds to each of a plurality of drug containers filled with a fire extinguishing agent and the plurality of drug containers, and pressurizes the inside of the drug container. A plurality of pressure containers filled with gas, a plurality of first operating means for opening the discharge port of the drug container corresponding to each of the plurality of drug containers, and each of the plurality of pressure containers. Corresponding to each of the plurality of second operating means for opening the discharge port of the pressurized container, the plurality of nozzles installed in one protective zone to be extinguished, and the plurality of drug containers. Correspondingly, a plurality of pipes connecting the discharge port of the drug container and the nozzle, a detecting means for detecting at least one of heat, smoke, and flame generated in the protected area, and the detecting means electrically. The first operating means operates with a time lag after the second operating member operates, including at least a control means for operating the second operating member based on the detection result of the detecting means. , The pressure of the gas supplied from the pressurized container is configured to be stored in the drug container until the discharge port of the drug container is opened.

(17) Preferably, in the fire extinguishing device of (16), the amount of the fire extinguishing agent filled in at least one of the plurality of drug containers is 3 kg or less.

(18) Preferably, in the fire extinguishing device of (16), the total length of at least one of the plurality of pipes exceeds 4 m.

(19) Preferably, in the fire extinguishing device of (18), the number of bent portions and / or branched portions of the pipe between the discharge port of the drug container and the nozzle is 9 or less.

(20) Preferably, the fire extinguishing device according to (16) is provided with an electric valve as the first operating means, and the control means operates the electric valve based on the passage of time.

(21) Preferably, in the fire extinguishing device of the above (16), the sealing plate as the first operating means is provided, and the sealing plate is destroyed due to the pressure in the medicine container.

(22) Preferably, in the fire extinguishing device of (16), the rupture disk as the first operating means is provided, and the rupture disk bursts due to the pressure in the drug container.

(23) Preferably, the fire extinguishing device of the above (16) includes an initiator as the first operating means, and the control means ignites the initiator based on the passage of time.

(24) Preferably, the fire extinguishing device according to (16) is provided with an initiator as the second operating means, and the control means ignites the initiator based on the detection result of the detection means.

(25) Preferably, in the fire extinguishing device of (16), the pressure in the drug container is 1 MPa or more between the operation of the second operating member and the opening of the discharge port of the drug container. Reach.

(26) Preferably, in the fire extinguishing device of (25), the internal volume of the pressure container is 1 deciliter or less.

(27) Preferably, in the fire extinguishing device of the above (16), the fire extinguishing agent filled in the drug container is a powder containing 90% or more of ammonium phosphate.

(28) Preferably, in the fire extinguishing device of the above (16), the nozzle includes an internal space that expands toward the end and a slit-shaped injection port that opens at the end of the internal space, and the injection port is from one end to the other end. It has a constant width over.

(29) Preferably, in the fire extinguishing device of the above (16), the nozzle includes an internal space that expands toward the end and a slit-shaped injection port that opens at the end of the internal space, and the injection port has a width of a central portion. Is wider than the other parts.

(30) Preferably, in any of the fire extinguishing devices (16) to (29), an operation panel electrically connected to the control means is further included, and the operation panel visually and visually indicates the occurrence of a fire. / Or a notification means for audibly notifying and an activation means for outputting a signal to the control means, and the control means at least the second based on the signal output from the operation panel. Operate the operating member.

(31) In order to achieve the above object, the vehicle of the present invention is a vehicle equipped with the fire extinguishing device according to the above (30), and the plurality of the nozzles are one of the protections inside the vehicle. The operation panel is installed in the compartment and the operation panel is arranged near the driver's seat.

(32) Preferably, the vehicle of (31) is a bus or a double-decker bus, and the protected area is an engine room.

In the fire extinguishing device of the present invention, after the gas is supplied from the pressurized container into the drug container, the discharge port of the drug container is opened with a time lag. The pressure of the gas supplied from the pressurized container is stored in the drug container until the discharge port of the drug container is opened. As a result, the internal pressure of the drug container becomes 1 MPa or more, and it becomes possible to discharge a sufficient fire extinguishing agent from a place away from the drug container, for example, a nozzle installed in the engine room of the bus.

It is the schematic which shows the bus which carried out the fire extinguishing apparatus of 1st Embodiment. It is the schematic which shows the fire extinguishing apparatus of 1st Embodiment. It is a block diagram which shows the fire extinguishing apparatus of 1st Embodiment. It is a flowchart which shows the control process of the fire extinguishing apparatus of 1st Embodiment. The nozzles constituting the fire extinguishing device of the first embodiment are shown, FIG. 5 (a) is a front view, FIG. 5 (b) is a bottom view, and FIG. 5 (c) is AA of FIG. 5 (a). A cross-sectional view taken along the line, FIG. 5D is a side view showing a state in which the fire extinguishing agent is released. It is the schematic which shows the fire extinguishing apparatus of 2nd Embodiment. It is the schematic which shows the fire extinguishing apparatus main body which comprises the fire extinguishing apparatus of 2nd Embodiment. FIG. 8A is a graph showing the pressure waveforms of the first chemical container and the first pipe constituting the fire extinguishing device of the second embodiment, and FIG. 8B is a graph showing the pressure waveforms of the first chemical container and the first piping, and FIG. 2 It is a graph which shows the pressure waveform of a medicine container and a 2nd pipe. FIG. 9 (a) is a graph showing the pressure waveforms of a single drug container and a single pipe constituting the fire extinguishing device of the first embodiment, and FIG. 9 (b) constitutes the fire extinguishing device of the second embodiment. It is a graph which shows the pressure waveform of the 2nd medicine container and the 2nd pipe.

Hereinafter, the fire extinguishing device according to the first embodiment of the present invention and the vehicle on which the fire extinguishing device is mounted will be described with reference to the drawings.

1. 1. Arrangement of Fire Extinguishing Device As shown in FIG. 1, the fire extinguishing device 2 of the first embodiment is mounted inside a bus 1 which is a large vehicle, and aims to extinguish a fire generated in an engine room 13. The electric power for operating the fire extinguishing device 2 is supplied from a battery (not shown) of the bus 1. The fire extinguishing device 2 is mainly composed of a fire extinguishing device main body 20, four nozzles 24, two temperature sensors (heat detecting means) 25, an operation panel 26, piping 27, and wiring 28.

The fire extinguishing device main body 20 is installed in, for example, the trunk room 12 of the bus 1. Both the nozzle 24 and the temperature sensor 25 are installed in the engine room 13 of the bus 1. The operation panel 26 is arranged in the vicinity of the driver's seat 11 of the bus 1. The fire extinguishing device main body 20 includes a drug container 21 and a control means 23 shown in FIG. The drug container 21 is communicated from the trunk room 12 to the nozzle 24 in the engine room 13 via the pipe 27. The control means 23 is electrically connected from the trunk room 12 to the temperature sensor 25 in the engine room 13 via the wiring 28. Further, the control means 23 is electrically connected from the trunk room 12 to the operation panel 26 in the vicinity of the driver's seat 11 via the wiring 28. In FIGS. 1 and 2, the pipe 27 is shown by a solid line, and the wiring 28 is shown by a dotted line.

2. 2. Configuration of Fire Extinguishing Device First, the components of the fire extinguishing device main body 20 will be described. As shown in FIG. 2, the fire extinguishing device main body 20 includes a drug container 21, an electric valve (first operating means) 21a, two pressure containers 22, an initiator (second operating means) 22a, and a control means 23.

<Drug container>
The drug container 21 is a cylinder that can withstand an internal pressure of 1 MPa or more and can be completely sealed. The material of the drug container 21 is preferably metal, particularly aluminum. Aluminum has the advantages of being lightweight, durable, and easy to recycle.

The chemical container 21 is filled with a fire extinguishing agent at normal pressure. The fire extinguishing agent is not particularly limited, and may be any of water, fortifying liquid, foam, gas, powder and the like. Here, the present inventors consider that the powdered fire extinguishing agent is particularly suitable for extinguishing a fire generated in the engine room 13. This is because the powdered fire extinguishing agent diffuses into the atmosphere in the engine room 13 provided with the ventilation port and the ventilation fan, and can extinguish the entire area in the engine room 13. The fire extinguishing agent preferably contains ammonium phosphate. Ammonium phosphate has a relapse prevention action and a negative catalytic action, and exhibits high fire extinguishing ability in ordinary fires and oil fires. The content of ammonium phosphate is at least about 40%, more preferably 90% or more. Further, the chemical container 21 may be filled with a fire extinguishing agent and then filled with gas to pressurize the internal pressure of the chemical container 21 to less than 1 Mpa. With this configuration, it is possible to increase the amount of gas released from the drug container 21. The gas filled in the chemical container 21 may be air, but carbon dioxide gas, nitrogen gas, or a mixed gas thereof, which are inert gases, are more preferable.

<Electric valve>
The drug container 21 has an outlet from which the fire extinguishing agent is discharged. The discharge port of the drug container 21 is coupled to the inlet of the motorized valve 21a. The outlet of the motorized valve 21a is coupled to the inlet of the pipe 27 that connects to the nozzle 24. The motorized valve 21a includes a motor for opening and closing the valve. The motor of the motorized valve 21a is electrically connected to the control means 23 via the wiring 28. As the electric valve 21a, for example, a ball valve having a configuration in which a spherical valve is rotated by 90 ° by electric control is used.

<Pressurized container>
The pressure vessel 22 is a small pressure vessel having an internal volume of 1 deciliter or less, which is not subject to the Japanese High Pressure Gas Safety Act, and is filled with a gas for pressurizing the inside of the drug container 21. The fire extinguishing device 2 of the present embodiment is configured to pressurize the inside of the drug container 21 by using two pressure containers 22. The discharge port of each pressurized container 22 communicates with the inside of the drug container 21 via the initiator 22a and the pipe 27. Each pressurized container 22 is filled with, for example, carbon dioxide gas, nitrogen gas, or a mixed gas thereof, which are inert gases. In the first embodiment, the inside of the drug container 21 is pressurized to 1 MPa or more by the total of the gases supplied from the two pressure containers 22. The filling pressure of the pressure vessel 22 is preferably in the range of 20 to 30 Mpa. For example, in the first embodiment, the pressurized container 22 is filled with the above-mentioned inert gas at a filling pressure of 26 Mpa.

<Initiator>
The outlets of the two pressure vessels 22 are each sealed by a sealing plate (not shown). An initiator 22a for breaking the sealing plate is coupled to the discharge port of each pressure container 22. The initiator 22a is an electric ignition type igniter. Each initiator 22a is electrically connected to the control means 23 via the wiring 28. The initiator 22a explodes the explosive by the electric current supplied from the control means 23, and moves a mechanical element (for example, a needle) for breaking the seal plate. As a result, the sealing plate is instantly torn, and gas is supplied into the drug container 21 from the discharge port of each pressurized container 22.

<Control means>
All operations of the fire extinguishing device 2 are controlled by the control means 23. The control means 23 executes the circuit diagnosis 23a, the temperature alarm determination 23b, the automatic activation determination 23c, the activation control 23d, the circuit restoration 23e, the lamp control 23f, and the voice control 23g shown in FIG. The control process of the control means 23 will be specifically described later with reference to FIG.

<Operation panel>
The operation panel 26 is a user interface of the fire extinguishing device 2, which enables the driver of the bus 1 to remotely control the fire extinguishing device 2 and also provides the driver of the bus 1 with system information and an alarm. The operation panel 26 includes a power lamp 26a, an automatic start lamp 26b, a manual start lamp 26c, a system abnormality warning lamp 26d, a disconnection warning lamp 26e, a temperature warning lamp 26f, a start lamp 26g, an automatic start switch 26h, and a manual start as shown in FIG. It includes a switch 26i, a recovery switch 26j, a buzzer sound stop switch 26k, and a speaker 26m. The operation of the operation panel 26 will be specifically described later with reference to FIG. 4 together with the control process of the control means 23.

<Nozzle>
As shown in FIG. 2, the four nozzles 24 are coupled to the outlet of the pipe 27 that communicates with the discharge port of the drug container 21 via the motorized valve 21a. It is desirable that each nozzle 24 is arranged at a position most effective for extinguishing a fire, for example, according to the layout of the engine 131, the ventilation port, the ventilation fan, and the like in the engine room 13. For example, the nozzles 24 of the first embodiment are arranged at equal intervals above the engine 131 in the engine room 13.

5 (a) to 5 (d) show a specific configuration of the nozzle 24 used in the first embodiment. In FIGS. 5A and 5B, the nozzle 24 is composed of first and second metal parts 241 and 242. The outer shape of the nozzle 24 is a regular hexagon similar to that of a bolt or nut, and it can be attached to the outlet of the pipe 27 by using a general tool such as a wrench or a spanner.

The first component 241 constitutes the main body of the nozzle 24, and includes a male screw 241a and a through hole 241b. The male screw 241a is screwed into the female screw provided inside the outlet of the pipe 27. The through hole 241b penetrates the first component 241 in the longitudinal direction (the left-right direction in FIGS. 5A and 5B).

The second component 242 forms a slit 242a on the outlet side (opposite side of the male screw 241a in FIGS. 5A and 5B) of the through hole 241b of the first component 241. The width W of the slit 242a is, for example, within the range of 3 mm to 6 mm. As shown in FIG. 5C, the depth of the slit 242a is defined by the V-shaped wall portion 242b. The opening angle of the V-shaped wall portion 242b is within the range of 60 ° to 90 °. The radial thin lines extending downward in FIG. 5D indicate the range of the fire extinguishing agent released from the slit 242a. The fire extinguishing agent is released from the slit 242a so as to spread radially, and is also discharged in the direction directly below the slit 242a.

Here, the nozzle 24 shown in FIG. 5D is installed so that the slit 242a faces vertically downward, but the nozzle 24 is not limited to this configuration. First, the direction of the nozzle 24 is not limited to the vertical downward direction, and it is preferable to arrange the nozzle 24 at an angle within a range of + 15 ° to + 45 ° or −15 ° to −45 ° from the vertical direction. As a result of experiments conducted by the inventors, the fire extinguishing effect is higher when the nozzle 24 is tilted within the range of + 15 ° to + 45 ° or -15 ° to −45 ° than when the nozzle 24 is installed vertically downward. Was recognized. Second, the orientations of the plurality of nozzles 24 may be different from each other. For example, in the first embodiment, the four nozzles 24 shown in FIG. 2 are arranged so as to be alternately tilted at + 30 ° and −30 °.

In the first embodiment, the width W of the slit 242a is fixed, but the width W is not limited to this. For example, the width of the central portion of the slit 242a may be made wider than the width of the other portions to give a feature to the spraying range of the fire extinguishing agent.

<Temperature sensor>
The two temperature sensors 25 are, for example, thermistors, which are installed in the engine room 13 at predetermined intervals. Each temperature sensor 25 is electrically connected to the control means 23 via a heat-resistant electric wire. Each temperature sensor 25 constantly detects the temperature of the air in the engine room 13 and transmits the detection result to the control means 23.

3. 3. Control processing of the fire extinguishing device Next, the control processing of the fire extinguishing device 2 will be described with reference to FIGS. 3 and 4. As described above, all the operations of the fire extinguishing device 2 are controlled by the control means 23. Further, the driver of the bus 1 can remotely control the fire extinguishing device 2 and perceive system information and alarms by the operation panel 26.

In the following description, the names of the control processes of the control means 23 are indicated by reference numerals 23a to 23g in FIG. The lamps, switches and speakers of the operation panel 26 are indicated by reference numerals 26a to 26m in FIG. The flow of the control process of the control means 23 is shown in steps S1 to S20 of FIG. Hereinafter, the control process of the control means 23 will be described along with steps S1 to S20 of FIG. 4 while quoting the reference numerals of FIGS. 2 and 3.

<Circuit diagnosis>
The fire extinguishing device 2 is operated by electric power supplied from a battery (not shown) of the bus 1. When the driver of the bus 1 turns on the main switch 11a in step S1, the control means 23 is activated and the circuit diagnosis 23a in step S2 is executed. In step S2, the control means 23 determines whether or not there is a system abnormality and disconnection. When it is determined that there is neither a system abnormality nor a disconnection (NO), the control means 23 proceeds to step S3 and turns on the power lamp 26a of the operation panel 26. After that, the control means 23 proceeds to step S7 and executes the temperature alarm determination 23b.

On the other hand, if it is determined in step S2 that there is a system abnormality (YES), the control means 23 proceeds to step S4, turns on the system abnormality alarm lamp 26d of the operation panel 26, and outputs a buzzer sound from the speaker 26m. If it is determined that there is a disconnection (YES), the control means 23 proceeds to step S5, turns on the disconnection warning lamp 26e of the operation panel 26, and outputs a buzzer sound from the speaker 26m.

The buzzer sounds of steps S4 and S5 are stopped by turning on the buzzer sound stop switch 26k of the operation panel 26 (steps S18 to S20). When the system abnormality and the disconnection are resolved, the recovery switch 26j of the operation panel 26 is turned on (step S16), and the control means 23 executes the process of the circuit recovery 23e (step S17). After that, the control means 23 starts the circuit diagnosis 23a in step S2 again.

<Temperature alarm judgment>
In the temperature alarm determination 23b in step S7, the control means 23 determines whether or not the temperature in the engine room 13 (step S6) detected by the two temperature sensors 25 is equal to or higher than the predetermined first set temperature. .. The first set temperature is a threshold value for detecting the stage of fire occurrence. As the first set temperature, for example, a temperature in the range of 100 ° C. to 120 ° C. may be set. When the temperature in the engine room 13 is lower than the first set temperature (NO), the control means 23 repeats the temperature alarm determination 23b in step S7.

On the other hand, in step S7, when the temperature in the engine room 13 is equal to or higher than the first set temperature (YES), the control means 23 proceeds to step S8, turns on the temperature alarm lamp 26f of the operation panel 26, and buzzers from the speaker 26m. Output sound. After that, the control means 23 proceeds to step S10 and executes the automatic start determination 23c.

<Automatic start judgment>
In the automatic start determination 23c in step S10, first, the control means 23 determines whether or not the automatic start switch 26h of the operation panel 26 is ON (step S9). When it is determined that the automatic start switch 26h is ON (YES), the control means 23 sets the temperature in the engine room 13 (step S11) detected by the two temperature sensors 25 to a predetermined second. Judge whether the temperature is above the set temperature. The second set temperature is a threshold value for detecting the initial stage of the fire. The second set temperature can be set to a value exceeding the first set temperature, for example, a value in the range of 140 ° C to 200 ° C, and is preferably set to 170 ° C. When the temperature in the engine room 13 is lower than the second set temperature (NO), the control means 23 repeats the automatic start determination 23c in step S10. After that, when the temperature in the engine room 13 becomes equal to or higher than the second set temperature (YES), the control means 23 executes the start control 23d in step S13.

On the other hand, when it is determined in step S10 that the automatic start switch 26h is not turned on (NO), the control means 23 repeats the temperature alarm determination 23b in step S7. In this case, the lighting of the temperature alarm lamp 26f and the output of the buzzer sound in step S8 are continuously executed unless the recovery switch 26j and the buzzer sound stop switch 26k of the operation panel 26 are operated.

<Startup control>
The activation control 23d in step S13 is executed when the automatic activation switch 26h or the manual activation switch 26i of the operation panel 26 is turned on. That is, when the automatic start switch 26h of the operation panel 26 is turned on and the temperature in the engine room 13 becomes equal to or higher than the second set temperature (step S10), the control means 23 starts the start control in step S13. Execute 23d. Further, when the manual start switch 26i is turned on (step S12), the control means 23 unconditionally executes the start control 23d in step S13.

In step S13, first, the control means 23 supplies a current to each of the two initiators 22a. The current causes each initiator 22a to operate instantaneously, breaking the sealing plate that seals the discharge port of each pressure vessel 22. As a result, the gas filled in each of the pressurized containers 22 is supplied into the drug container 21.

In step S13, the control means 23 then counts a preset time. This time is the standby time from when the current is supplied to the initiator 22a until the motorized valve 21a is opened. This waiting time can be set to, for example, 2 seconds or more. The pressure of the gas supplied from each pressure container 22 is stored in the drug container 21 until the 2-second count is completed. In the first embodiment, the internal pressure of the drug container 21 reaches 1 MPa or more, preferably 1.5 MPa or more by the end of the 2-second count.

When the count for 2 seconds is completed in step S13, the control means 23 transmits a signal to the motor of the motorized valve 21a to open the valve. As a result, the fire extinguishing agent in the drug container 21 pressurized to 1 MPa or more is supplied to each of the four nozzles 24 through the pipe 27. The fire extinguishing agent is evenly discharged from each nozzle 24 toward the engine 131 installed in the engine room 13 (step S14).

When the start control 23d in step S13 is executed, the control means 23 turns on the start lamp 26 g of the operation panel 26 and outputs a buzzer sound from the speaker 26 m (step S15). The buzzer sound in step S15 is stopped by turning on the buzzer sound stop switch 26k of the operation panel 26 (steps S18 to S20). After the fire extinguishing of the engine room 13 is completed, the drug container 21, each pressure container 22, and each initiator 22a are replaced with new ones, and the recovery switch 26j of the operation panel 26 is turned on (step S16). As a result, the process of the circuit restoration 23e is executed (step S17), and the fire extinguishing device 2 can be reused for extinguishing the fire in the engine room 13 of the bus 1.

4. Action and effect of fire extinguishing device The fire extinguishing device 2 of the first embodiment has the characteristics of both a pressurized type and a pressure accumulating type. Therefore, when the fire extinguishing device 2 is applied to extinguish the fire in the engine room 13 of the bus 1, both the pressurizing type and the accumulating type can be enjoyed.

<Accumulation type action effect>
The fire extinguishing device 2 of the first embodiment opens the discharge port of the drug container 21 with a time lag from the start of gas supply by each pressure container 22. As a result, the pressure of the gas supplied from each pressure container 22 is stored in the drug container 21, and the pressure is sufficient to extinguish the fire that has occurred in the engine room 13 of the bus 1 (for example, the internal pressure of the drug container 21). Is 1 MPa or more).

In the fire extinguishing device 2 of the first embodiment, the internal pressure of the drug container 21 is increased by providing a time difference between the timing of opening each of the pressurized container 22 and the drug container 21. As a result, sufficient pressure can be obtained for extinguishing the fire in the engine room 13 without increasing the volume and number of the pressure vessels 22. As a result, the fire extinguishing device main body 20 can be miniaturized, and the fire extinguishing device main body 20 can be installed in a relatively small space inside the bus 1.

<Pressurized action effect>
The fire extinguishing device 2 of the first embodiment pressurizes the inside of the chemical container 21 to a high pressure of 1 MPa or more for a short time immediately after a fire breaks out in the engine room 13. On the other hand, in a normal time when a fire does not occur, the pressure inside the drug container 21 is normal, and the internal volume of each pressure container 22 is 1 deciliter or less, which is not subject to the Japanese High Pressure Gas Safety Act. That is, the fire extinguishing device 2 has safety not subject to the High Pressure Gas Safety Act, and is not limited to the standards stipulated in the High Pressure Gas Safety Act.

<Nozzle action effect>
According to the configuration of the nozzle 24 shown in FIGS. 5A to 5C, as shown in FIG. 5D, the fire extinguishing agent is radially spread and discharged from the slit 242a and in the direction directly below the slit 242a. Is also released. As a result, the fire extinguishing agent can be discharged from directly above the engine 131 to directly below, and the fire generated in the engine room 13 can be effectively extinguished.

5. Others The fire extinguishing device of the present invention and the vehicle on which the fire extinguishing device is mounted are not limited to the configuration of the first embodiment described above.

The vehicle equipped with the fire extinguishing device of the present invention is not limited to the bus 1 shown in FIG. The fire extinguishing device of the present invention can be widely applied to large vehicles such as freight vehicles, railroad vehicles, construction vehicles, agricultural vehicles, industrial vehicles, or aircraft.

The protected area to be extinguished by the fire extinguishing device of the present invention is not limited to the engine room of the vehicle. For example, in the bus 1 shown in FIG. 1, in addition to the engine room 13, the graphite purifying device room 14, the preheater room 15, and the battery room (not shown) are designated as protective sections, and the nozzles 24 and It is possible to install the temperature sensor 25. Further, the number of nozzles 24 and temperature sensors 25 installed in one or more protected compartments is not limited to the above-described first embodiment. An appropriate number of nozzles 24 and temperature sensors 25 may be arranged for each fire extinguishing in one or more protected areas. Further, in the bus 1 shown in FIG. 1, the installation location of the fire extinguishing device main body 20 is not limited to the trunk room 12. For example, the fire extinguishing device main body 20 may be installed in an empty space in the graphite purifying device room 14 or the preheater room 15.

The fire extinguishing device of the present invention can be installed not only in a vehicle but also in a building such as an indoor parking lot, a hospital, a welfare facility, a substation facility, a factory, a museum, a server room, or a kitchen of a restaurant.

The means for opening the drug container with a time lag is not limited to the motorized valve 21a shown in FIG. For example, a sealing plate or rupture disc that breaks by itself when the internal pressure of the drug container reaches a predetermined pressure may be used. Further, the sealing plate that closes the discharge port of the drug container may be broken by the initiator 22a shown in FIG.

The temperature sensor that constitutes the fire extinguishing device is not limited to the thermistor. For example, a temperature sensor such as a thermocouple, a resistance temperature detector or a bimetal thermostat may be used.

Further, the sensor for automatically starting the fire extinguishing device is not limited to the temperature sensor, and the fire extinguishing device automatically activates the fire extinguishing device based on the sensor that detects any of heat, smoke, and flame in the engine room 13. It may be configured to start with. The smoke generated in the engine room 13 can be detected by, for example, an optical sensor including a light emitting unit and a light receiving unit. Further, the flame generated in the engine room 13 can be detected by, for example, an ultraviolet ray or infrared ray detector.

6. Second Embodiment Hereinafter, the fire extinguishing device according to the second embodiment of the present invention will be described with reference to FIGS. 6 to 9.

<Technical issues>
The fire extinguishing device 2 of the first embodiment described above can obtain sufficient pressure to extinguish the fire in the engine room 13. However, as shown in FIGS. 1 and 2, the fire extinguishing device 2 of the first embodiment is configured to supply the fire extinguishing agent to a plurality of nozzles 24 by a single pipe 27. Therefore, depending on the structure of the actual bus 1 on which the fire extinguishing device 2 is mounted, the total length of the pipe 27 must be increased, and the number of bent portions and branch portions formed in the pipe 27 must be increased. You may have to. In such a case, the pressure loss until the fire extinguishing agent reaches the nozzle 24 becomes large. The large pressure loss delays the time it takes for the fire extinguishing agent to reach the nozzle 24, thus delaying the start of discharge of the fire extinguishing agent from the nozzle 24. Also, the large pressure loss causes insufficient diffusion of the fire extinguishing agent discharged from the nozzle 24.

<Fire extinguishing device of the second embodiment>
The fire extinguishing device of the second embodiment aims to solve the above-mentioned technical problems. To achieve this purpose, the fire extinguishing device of the second embodiment has two chemical containers for supplying fire extinguishing agents to a plurality of nozzles installed in one protected area, two pressurized containers, and two second. It is characterized by including one operating means, two second operating means, and two pipes.

The characteristic configuration of the fire extinguishing device 3 of the second embodiment is shown in FIGS. 6 and 7. As shown in FIG. 6, the fire extinguisher device 3 includes a fire extinguisher main body 30, first and second pipes 37A and 37B, and four nozzles 24 installed in the engine room 13. As shown in FIG. 7, the fire extinguisher main body 30 includes the first and second chemical containers 31A and 31B, the first and second pressure containers 32A and 32B, the first and second motor valves 311 and 312, the first and the second. A second initiator 321 and 322 are provided.

The fire extinguishing device 3 of the second embodiment is electrically connected to the temperature sensor 25 and the operation panel 26 shown in FIG. 3 as in the first embodiment, and is controlled by the control means 23 as shown in FIG. The process is executed.

In FIG. 7, each of the first and second drug containers 31A and 31B is filled with a fire extinguishing agent. The amount of the fire extinguishing agent filled in each of the first and second drug containers 31A and 31B may be smaller than the amount of the fire extinguishing agent filled in the single drug container 21 of the first embodiment. For example, a single drug container 21 is filled with 6 kg of fire extinguishing agent. On the other hand, the first and second drug containers 31A and 31B are each filled with 3 kg of fire extinguishing drug.

The first motorized valve 311 is coupled to the discharge port of the first drug container 31A. A second motorized valve 312 is coupled to the discharge port of the second drug container 31B. The configurations of the first and second solenoid valves 311 and 312 are the same as those of the solenoid valve 21a of the first embodiment, and include a motor for opening and closing the valves. The motors of the first and second motor valves 311 and 312 are electrically connected to the control means 23 via the wiring 28.

The configurations of the first and second pressure containers 32A and 32B are the same as those of the pressure container 22 of the first embodiment, and the inside of each of the first and second drug containers 31A and 31B is pressurized to 1 MPa or more. Is filled with gas. The outlets of the first and second pressure vessels 32A and 32B are closed by a sealing plate (not shown).

The first initiator 321 is coupled to the discharge port of the first pressure vessel 32A. A second initiator 322 is coupled to the discharge port of the second pressure vessel 32B. The first and second initiators 321 and 322 include mechanical elements (eg, needles) for breaking the sealing plate, as in the first embodiment.

The first initiator 321 can be activated automatically or manually. The first initiator 321 is electrically connected to the control means 23 via the wiring 28. Similar to the first embodiment, the control means 23 is electrically connected to the temperature sensor 25 (see FIG. 2) installed in the engine room 13. When the temperature in the engine room 13 detected by the temperature sensor 25 becomes equal to or higher than the second set temperature (see step S11 in FIG. 4), the control means 23 supplies a current to the first initiator 321. The first initiator 321 is activated by the current supplied from the control means 23. Further, the first initiator 321 is provided with a lever 323, which can be activated by a manual operation of the lever 323.

The second initiator 322 is activated in conjunction with the first initiator 321. The inlet of the T-shaped joint 324 is coupled to the first initiator 321. The T-shaped joint 324 has one said inlet and two outlets. The first outlet of the T-shaped joint 324 communicates with the inside of the first drug container 31A via a small-diameter copper pipe 325. The second outlet of the T-shaped joint 324 is coupled to the second initiator 322 via a small diameter copper pipe 325. The second initiator 322 communicates with the inside of the second drug container 31B via a small-diameter copper tube 325.

When the first initiator 321 is activated, the sealing plate that closes the discharge port of the first pressure vessel 32A is torn. As a result, the gas in the first pressure container 32A is supplied to the first drug container 31A and the second initiator 322 via the T-shaped joint 324 and the copper pipe 325. The second initiator 322 is activated by receiving the pressure of the gas supplied from the first pressure container 32A, and the sealing plate that closes the discharge port of the second pressure container 32B is broken. As a result, the gas in the second pressurized container 32B is supplied to the second drug container 31B via the copper tube 325.

By supplying the gas from the first and second pressure containers 32A and 32B, the insides of the first and second drug containers 31A and 31B are pressurized to 1 MPa or more. After that, as in the first embodiment, the control means 23 opens the first and second motor-operated valves 311 and 312 with a time lag from the start of the first initiator 321. As a result, the fire extinguishing agent filled in each of the first and second drug containers 31A and 31B is released.

In FIG. 6, the fire extinguishing agent released from the first chemical container 31A is supplied to the two nozzles 24 installed on the left side of the engine room 13 through the first pipe 37A. The fire extinguishing agent released from the second chemical container 31B is supplied to the two nozzles 24 installed on the right side of the engine room 13 through the second pipe 37B.

As the first and second pipes 37A and 37B, for example, copper pipes are preferably used. The copper tube has excellent flexibility and can be easily bent when installed in the internal space of the bus 1. More preferably, a copper tube made of phosphorylated copper is used. Copper deoxidized does not cause hydrogen embrittlement even when heated to high temperatures. For example, as the first and second pipes 37A and 37B, a copper tube made of phosphorylated copper having a wall thickness of 1.0 mm, an outer diameter of 19.05 mm, an inner diameter of 18.05 mm, a maximum working pressure of 6.7 MPa, and an allowable tensile stress of 61 MPa is used. Use.

The shorter the total length of each of the first and second pipes 37A and 37B, the smaller the pressure loss until the fire extinguishing agent reaches the nozzle 24. For example, when the outer diameters of the first and second pipes 37A and 37B are 19.05 mm, the total length of each of the first and second pipes 37A and 37B is preferably 7 m or less. If the outer diameters of the first and second pipes 37A and 37B are increased, the total length can exceed 7 m.

The numbers circled in FIG. 6 indicate the bent portions and the branched portions formed in the first and second pipes 37A and 37B, respectively. The bent portion and the branched portion are formed between the inlet and the outlet of the first and second pipes 37A and 37B. The smaller the number of bent portions and branched portions, the smaller the pressure loss until the fire extinguishing agent reaches the nozzle 24. The number of bent portions and branched portions formed in each of the first and second pipes 37A and 37B is preferably 9 or less.

As shown by the pressure measurement results described below, the first and second pipes 37A and 37B have a small pressure loss until the fire extinguishing agent reaches the nozzle 24. Therefore, a new nozzle 24A installed in a protected area other than the engine room 13 may be added to one or both of the first and second pipes 37A and 37B. The newly added nozzle 24A is installed, for example, in the graphite purifying device room 14, the preheater room 15, or a battery room (not shown) of the bus 1 shown in FIG.

<Pressure measurement result>
The pressures of each part of the fire extinguishing device 2 of the first embodiment and the fire extinguishing device 3 of the second embodiment were measured, and the results were compared. The pressure measurement conditions are shown in Table 1 below.

However, "D61" in Table 1 is a product name of a pressurizing cylinder filled with 61 g of a mixed gas of CO ₂ and N ₂ sold by Nippon Dry-Chemical Co., Ltd. (registered trademark).

The fire extinguishing devices 2 and 3 shown in Table 1 were activated, and the pressures in the drug container, the pipe inlet, and the pipe outlet were measured from the opening of the motorized valve until 7 seconds had passed. FIG. 8A shows the measurement results of the first chemical container 31A and the first pipe 37A constituting the fire extinguishing device 3. FIG. 8B shows the measurement results of the second chemical container 31B and the second pipe 37B constituting the fire extinguishing device 3. FIG. 9A shows the measurement results of the single drug container 21 and the single pipe 27 constituting the fire extinguishing device 2. Note that FIG. 9B is the same graph as in FIG. 8B with hatching indicating the pressure loss added.

As shown in FIG. 8A, the maximum pressure in the first fire extinguishing agent container 31A of the fire extinguishing device 3 was about 1.4 MPa at a time about 1.5 seconds before the first motorized valve 311 was opened. .. The maximum pressure at the inlet of the first pipe 37A of the fire extinguishing device 3 was about 0.8 MPa about 0.3 seconds after the first motorized valve 311 was opened. The maximum pressure at the outlet of the first pipe 37A of the fire extinguishing device 3 was a little over 0.4 MPa about 1 second after the first motorized valve 311 was opened. That is, the maximum value of the pressure loss between the inlet and the outlet of the first pipe 37A is about 0.4 MPa.

As shown in FIG. 8B, the maximum pressure in the second fire extinguishing agent container 31B of the fire extinguishing device 3 was about 1.3 MPa at a time about 1.5 seconds before the second motor valve 312 was opened. .. The maximum pressure at the inlet of the second pipe 37B of the fire extinguishing device 3 was about 0.8 MPa about 0.3 seconds after the second motor valve 312 was opened. The maximum pressure at the outlet of the second pipe 37B of the fire extinguishing device 3 was a little less than 0.4 MPa about 0.6 seconds after the second motor valve 312 was opened. That is, the maximum value of the pressure loss between the inlet and the outlet of the first pipe 37A is about 0.4 MPa.

As shown in FIG. 9A, the maximum pressure in the single fire extinguishing agent container 21 of the fire extinguishing device 2 was about 1.5 MPa just before the electric valve 21a was opened. The maximum pressure at the inlet of the single pipe 27 of the fire extinguishing device 2 was about 1.0 MPa about 0.3 seconds after the electric valve 21a was opened. The maximum pressure at the outlet of the single pipe 27 of the fire extinguishing device 2 was about 0.3 MPa about 1.0 second after the electric valve 21a was opened. That is, the maximum value of the pressure loss between the inlet and the outlet of the single pipe 27 is about 0.7 MPa.

Next, the maximum pressure at the outlet of the single pipe 27 of the first embodiment and the maximum pressure at each outlet of the first and second pipes 37A and 37B of the second embodiment are measured a plurality of times, and the result is measured. Compared. The measurement conditions are the same as in Table 1. The maximum pressure at the outlet of a single pipe 27 is shown in Table 2 below. The maximum pressure at each outlet of the first and second pipes 37A and 37B is shown in Table 3 below.

<Action effect>
-Reduction of pressure loss As shown by the hatching in FIGS. 9 (a) and 9 (b), according to the fire extinguishing device 3 of the second embodiment, the pressure loss until the fire extinguishing agent reaches the nozzle 24 is reduced. It is possible to reduce it. Specifically, the maximum value of the pressure loss between the inlet and the outlet of the single pipe 27 in the fire extinguishing device 2 of the first embodiment is about 0.7 MPa. On the other hand, the maximum value of the pressure loss between the inlet and the outlet of the first and second pipes 37A and 37B in the fire extinguishing device 3 of the second embodiment is about 0.4 MPa.

-Increase in maximum pressure at the outlet of the pipe As shown in the average of the maximum pressure [MPa] in Tables 2 and 3, according to the fire extinguishing device 3 of the second embodiment, each of the first and second pipes 37A and 37B. It is possible to increase the maximum pressure at the outlet. Specifically, the average maximum pressure at the outlet of a single pipe 27 in the fire extinguishing device 2 of the first embodiment is 0.294 MPa. On the other hand, the average maximum pressure at the outlet of the first pipe 37A in the fire extinguishing device 3 of the second embodiment is 0.442 MPa, and the average maximum pressure at the outlet of the second pipe 37B is 0.379 MPa. .. Further, as shown in the total average of the maximum pressure [MPa] in Table 3, the total average of the maximum pressures at the outlets of the first and second pipes 37A and 37B in the fire extinguishing device 3 of the second embodiment is 0.411 MPa. Is.

-Reducing the maximum pressure reaching time at the outlet of the pipe As shown in the average of the maximum pressure reaching time [seconds] in Tables 2 and 3, according to the fire extinguishing device 3 of the second embodiment, the first and second pipes 37A , It is possible to shorten the maximum pressure reaching time at each outlet of 37B. Specifically, the average maximum pressure arrival time at the outlet of a single pipe 27 in the fire extinguishing device 2 of the first embodiment is 1.03 seconds. On the other hand, the average maximum pressure arrival time at the outlet of the first pipe 37A in the fire extinguishing device 3 of the second embodiment is 0.90 seconds, and the average maximum pressure arrival time at the outlet of the second pipe 37B is. It is 0.87 seconds. Further, as shown in the total average of the maximum pressure arrival time [seconds] in Table 3, the total average of the maximum pressure arrival times at the outlets of the first and second pipes 37A and 37B in the fire extinguishing device 3 of the second embodiment is , 0.88 seconds.

-Summary As described above, according to the fire extinguishing device 3 of the second embodiment, it is possible to reduce the pressure loss until the fire extinguishing agent reaches the nozzle 24. As a result, the maximum pressure at the outlets of the first and second pipes 37A and 37B is increased, and the maximum pressure arrival time is shortened. As a result, a large amount of fire extinguishing agent can be instantly diffused into the engine room 13 which is a protected area.

Further, as a result of the reduction in pressure loss, the fire extinguishing device 3 of the second embodiment increases the total length of the first and second pipes 37A and 37B, and bends and branches the first and second pipes 37A and 37B. It is possible to increase the number of parts. As a result, the degree of freedom in layout when the first and second pipes 37A and 37B are installed inside the bus 1 is increased.

1 Bus (vehicle)
11 Driver's seat 11a Bus main switch 12 Trunk room 13 Engine room 131 Engine 14 Graphite purification device room 15 Preheater room 2 Fire extinguishing device 20 Fire extinguishing device body 21 Chemical container 21a Electric valve (first operating means)
22 Pressurized container 22a Initiator (second operating means)
23 Control means 23a Circuit diagnosis 23b Temperature alarm judgment 23c Automatic start judgment 23d Start control 23e Circuit recovery 23f Lamp control 23g Voice control 24, 24A Nozzle 241 1st part 241a Male screw 241b Through hole 242 2nd part 242a Slit 242b V-shaped wall 25 Temperature sensor (heat detection means)
26 Operation panel 26a Power lamp 26b Automatic start lamp 26c Manual start lamp 26d System error alarm lamp 26e Disconnection alarm lamp 26f Temperature alarm lamp (notification means)
26g start lamp (notification means)
26h Automatic start switch 26i Manual start switch (starting means)
26j Recovery switch 26k Buzzer sound stop switch 26m Speaker (notification means)
27 Piping 28 Wiring 3 Fire extinguishing device 30 Fire extinguishing device main body 31A 1st chemical container 31B 2nd chemical container 311 1st electric valve (1st operating means)
312 Second solenoid valve (first actuating means)
32A 1st pressure vessel 32B 2nd pressure vessel 321 1st initiator (second operating means)
322 Second initiator (second actuating means)
323 Lever 324 T-shaped joint 325 Copper pipe 37A 1st pipe 37B 2nd pipe

Claims (32)

A drug container filled with fire extinguishing chemicals and
A pressurized container filled with gas for pressurizing the inside of the drug container, and
A first actuating means for opening the discharge port of the drug container and
A second operating means for opening the discharge port of the pressurized container, and
Nozzles installed in the protected area to be extinguished,
A pipe that connects the discharge port of the drug container and the nozzle,
A detection means for detecting at least one of heat, smoke, and flame generated in the protected area.
A control means that is electrically connected to the detection means and operates at least the second actuating member based on the detection result of the detection means.
After the second actuating member operates, the pressure of the gas supplied from the pressurizing container is the pressure of the drug container until the first actuating means operates with a time lag and the discharge port of the drug container is opened. A fire extinguisher configured to be stored inside. The fire extinguishing device according to claim 1, further comprising an electric valve as the first operating means, wherein the control means operates the electric valve based on the passage of time. The fire extinguishing device according to claim 1, further comprising a sealing plate as the first operating means, wherein the sealing plate is destroyed due to pressure in the drug container. The fire extinguishing device according to claim 1, further comprising a rupture disk as the first operating means, wherein the rupture disk bursts due to pressure in the drug container. The fire extinguishing device according to claim 1, further comprising an initiator as the first operating means, wherein the control means ignites the initiator based on the passage of time. The fire extinguishing device according to claim 1, further comprising an initiator as the second operating means, wherein the control means ignites the initiator based on the detection result of the detection means. The fire extinguishing device according to claim 1, wherein the pressure in the drug container reaches 1 MPa or more between the operation of the second operating member and the opening of the discharge port of the drug container. The fire extinguishing device according to claim 7, further comprising a plurality of the pressurized containers having an internal volume of 1 deciliter or less. The fire extinguishing device according to claim 1, wherein the fire extinguishing agent filled in the drug container is a powder containing 90% or more of ammonium phosphate. The fire extinguishing device according to claim 1, wherein the nozzle includes an internal space that expands toward the end and a slit-shaped injection port that opens at the end of the internal space, and the injection port has a constant width from one end to the other end. The first aspect of the present invention, wherein the nozzle includes a divergent internal space and a slit-shaped injection port that opens at the end of the internal space, and the width of the central portion of the injection port is wider than the width of the other portion. Fire extinguisher. Further including an operation panel electrically connected to the control means, the operation panel outputs a signal to the control means and a notification means for visually and / or aurally notifying the occurrence of a fire. The fire extinguishing device according to any one of claims 1 to 11, wherein the control means operates at least the second operating member based on a signal output from the operation panel. A vehicle equipped with the fire extinguishing device according to claim 12, wherein the nozzle is installed in the protected area inside the vehicle, and the operation panel is arranged in the vicinity of the driver's seat. The vehicle according to claim 13, wherein the vehicle is a bus or a double-decker bus, and the protected area is an engine room. The vehicle according to claim 14, wherein the protected compartment includes at least one of a graphite purifier room, a preheater room and a battery room in addition to the engine room. Multiple drug containers filled with fire extinguishing agents and
A plurality of pressure containers corresponding to each of the plurality of drug containers and filled with a gas for pressurizing the inside of the drug container.
A plurality of first actuating means for opening the discharge port of the drug container corresponding to each of the plurality of drug containers, and
A plurality of second operating means for opening the discharge port of the pressurized container corresponding to each of the plurality of pressurized containers, and
Multiple nozzles installed in one protected area to be extinguished,
A plurality of pipes corresponding to each of the plurality of drug containers and connecting the discharge port of the drug container and the nozzle, and
A detection means for detecting at least one of heat, smoke, and flame generated in the protected area.
A control means that is electrically connected to the detection means and operates at least the second actuating member based on the detection result of the detection means.
After the second actuating member operates, the pressure of the gas supplied from the pressurizing container is the pressure of the drug container until the first actuating means operates with a time lag and the discharge port of the drug container is opened. A fire extinguisher configured to be stored inside. The fire extinguishing device according to claim 16, wherein the amount of the fire extinguishing agent filled in at least one of the plurality of drug containers is 3 kg or less. The fire extinguishing device according to claim 16, wherein at least one of the plurality of pipes has a total length of more than 4 m. The fire extinguishing device according to claim 18, wherein the number of bent portions and / or branched portions of the pipe between the discharge port of the drug container and the nozzle is 9 or less. The fire extinguishing device according to claim 16, further comprising an electric valve as the first operating means, wherein the control means operates the electric valve based on the passage of time. The fire extinguishing device according to claim 16, further comprising a sealing plate as the first operating means, wherein the sealing plate is destroyed due to pressure in the drug container. The fire extinguishing device according to claim 16, further comprising a rupture disk as the first operating means, wherein the rupture disk bursts due to pressure in the drug container. The fire extinguishing device according to claim 16, further comprising an initiator as the first operating means, wherein the control means ignites the initiator based on the passage of time. The fire extinguishing device according to claim 16, further comprising an initiator as the second operating means, wherein the control means ignites the initiator based on the detection result of the detection means. The fire extinguishing device according to claim 16, wherein the pressure in the drug container reaches 1 MPa or more between the operation of the second operating member and the opening of the discharge port of the drug container. The fire extinguishing device according to claim 25, wherein the internal volume of the pressurized container is 1 deciliter or less. The fire extinguishing device according to claim 16, wherein the fire extinguishing agent filled in the drug container is a powder containing 90% or more of ammonium phosphate. The fire extinguishing device according to claim 16, wherein the nozzle includes an internal space that expands toward the end and a slit-shaped injection port that opens at the end of the internal space, and the injection port has a constant width from one end to the other end. 16. The 16th aspect of the invention, wherein the nozzle includes a divergent internal space and a slit-shaped injection port that opens at the end of the internal space, and the width of the central portion of the injection port is wider than the width of the other portion. Fire extinguisher. Further including an operation panel electrically connected to the control means, the operation panel outputs a signal to the control means and a notification means for visually and / or aurally notifying the occurrence of a fire. The fire extinguishing device according to any one of claims 1 to 11, wherein the control means operates at least the second operating member based on a signal output from the operation panel. A vehicle equipped with the fire extinguishing device according to claim 30, wherein a plurality of the nozzles are installed in one protection zone inside the vehicle, and the operation panel is arranged in the vicinity of the driver's seat. vehicle. The vehicle according to claim 31, wherein the vehicle is a bus or a double-decker bus, and the protected area is an engine room.