JP2019213957A - Package type automatic fire extinction installation - Google Patents

Abstract

To enhance effect for suppressing spreading of fire disaster when performing fire fighting using fire extinguisher stored in a tank unit.SOLUTION: A control unit controls a selection valve of a system from which a fire disaster is detected by a fire detector to start a continuous opening operation in which the selection valve is opened only for a set continuous open period and be closed, after a lapse of the set continuous open period, and controls the selection valve to operate an intermittent opening operation of repeating valve opening for set intermittent open period and valve closure for set closure period.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a package-type automatic fire extinguishing system that extinguishes a fire using a fire extinguishing agent stored in a tank unit.

  2. Description of the Related Art Conventionally, package-type automatic fire-extinguishing equipment that emits a fire-extinguishing agent stored in a tank unit from a nozzle is known (for example, see Patent Documents 1 and 2). Patent Literature 1 discloses a central fire extinguishing system for home use in which when a fire is detected, a fire extinguishing agent stored in a fire extinguishing agent storage container automatically radiates to a fire extinguishing agent ejection head near a fire occurrence location via a conduit. Have been. Patent Literature 2 discloses an automatic fire extinguishing system that includes a tank that stores a fire extinguishing agent and a pressurizing unit that pressurizes the inside of the tank, and pressurizes the inside of the tank with the pressurizing unit in the event of a fire.

JP 2001-104506 A JP-A-10-216262

  Package-type automatic fire extinguishing equipment as disclosed in Patent Literatures 1 and 2 performs fire extinguishing activities by radiating the entire amount of fire extinguisher stored in a tank to a fire section. When the surface of the burning material is burning, the fire extinguishing agent can be radiated directly to the fire source to perform fire fighting. However, when there is an obstacle or the like between the nozzle and the fire source and the fire extinguisher is not directly applied to the fire source, the fire may not be extinguished even if all the fire extinguisher in the tank unit is radiated. Even if the fire is not completely extinguished and the combustion continues, there is no extinguishing agent in the tank unit and the extinguishing agent cannot be radiated again.

  The present invention has been made in order to solve the above problems, and when performing a fire extinguishing activity using a fire extinguishing agent stored in a tank unit, it is possible to enhance the effect of suppressing the spread of fire. It aims to provide a package type automatic fire extinguishing system.

  The package type automatic fire extinguishing equipment according to the present invention includes a tank unit storing a fire extinguishing agent, a plurality of discharge conduits branched from the tank unit for each of a plurality of systems, and supplied with the fire extinguishing agent from the tank unit, and a plurality of discharge lines. A plurality of fire extinguisher radiating units connected to each of the conduits and radiating the extinguishing agent flowing through the discharge conduit; and a plurality of fire extinguisher radiating units provided for each of the plurality of discharge conduits to control the supply of the fire extinguishing agent from the tank unit to the fire extinguisher radiating unit A selection valve, a fire detection unit that detects a fire at the installation location of the fire extinguisher radiating unit, and a control unit that controls the operation of the selection valve based on the detection of the fire by the fire detection unit. After the selection valve of the system in which the fire was detected by the sensor performs a continuous opening operation that opens and closes only for the set continuous open period, intermittently repeats the opening of the set intermittent open period and the closing of the set closed period And controls to perform release operation.

  ADVANTAGE OF THE INVENTION According to the package-type automatic fire extinguishing equipment of this invention, the effect which suppresses a fire spread can be raised.

It is a mimetic diagram showing an embodiment of a package type automatic fire extinguishing equipment of the present invention. It is a flowchart which shows the operation example of the package type automatic fire extinguishing equipment of FIG. 2 is a timing chart showing opening and closing of a selection valve when a fire has occurred in another fire extinguishing section while a continuous opening operation is being performed in one fire extinguishing section of FIG. 1. 2 is a timing chart showing opening and closing of a selection valve when a fire occurs in another fire extinguishing section while an intermittent opening operation is being performed in one fire extinguishing section of FIG. 1.

  Hereinafter, an embodiment of a package type automatic fire extinguishing equipment will be described with reference to the drawings. FIG. 1 is a schematic diagram showing an embodiment of the package type automatic fire extinguishing equipment of the present invention. The package-type automatic fire extinguisher 1 shown in FIG. 1 senses heat generated by a fire and automatically emits a fire extinguishing agent to extinguish the fire. The package-type automatic fire-extinguishing equipment 1 is provided for each of the tank unit 2, a plurality of discharge conduits 9A to 9C connected to the tank unit 2 and provided for each of the plurality of systems A to C, and each of the plurality of systems A to C. The fire extinguisher includes selection valves 6A to 6C, a plurality of fire detectors 10, a fire extinguisher radiator 11, and a controller 20 installed in each fire extinguishing section.

  The tank unit 2 stores a fire extinguishing agent, and has a structure in which, for example, a plurality (for example, four) of fire extinguishing agent storage containers 2A connected to each other by pipes in a housing are accommodated. In addition, although the case where the tank unit 2 is provided with the four fire extinguishing agent storage containers 2A is illustrated, the present invention is not limited to the above-described structure, and may include one fire extinguishing agent storage container 2A or two or more fire extinguishing agent storage containers. The medicine storage containers 2A may be connected to each other by piping.

  The tank unit 2 has a pressurizing gas container 3 connected to a fire extinguishing agent storage container 2A via an activation valve 4. The pressurizing gas container 3 is filled with a pressurizing gas such as nitrogen gas for pressurizing the pressure in the fire extinguishing agent storage container 2A. The activation valve 4 controls the supply of the pressurizing gas to the fire extinguishing agent storage container 2 </ b> A, and its operation is controlled by the control unit 20. When the fire extinguishing agent is supplied from the fire extinguishing agent storage container 2A to the discharge conduits 9A to 9C when a fire occurs, the starting valve 4 is opened, and the pressurizing gas is supplied from the pressurizing gas container 3 to the fire extinguishing agent storage container 2A. The inside of the fire extinguishing agent storage container 2A is pressurized. Thereby, the fire extinguishing agent in the fire extinguishing agent storage container 2A can be supplied to the discharge conduits 9A to 9C at a predetermined pressure. Note that a pressure regulator 4A is provided between the fire extinguishing agent storage container 2A and the activation valve 4, so that a gas at a predetermined pressure is supplied from the pressurizing gas container 3 to the fire extinguishing agent storage container 2A. ing.

  The tank unit 2 has a primary pipe 8 connecting the fire extinguishing agent storage container 2A and each of the selection valves 6A to 6C. Constant flow valves 5A to 5C are provided between the primary pipe 8 and the selection valves 6A to 6C. The constant flow valves 5 </ b> A to 5 </ b> C adjust the supply of the fire extinguishing agent at a constant flow rate from the tank unit 2 to the fire extinguishing agent radiating unit 11. That is, the constant flow valves 5A to 5C are adjustment valves that maintain a constant flow rate regardless of a change in pressure on the inlet side or the outlet side of the selection valves 6A to 6C.

  The selection valves 6A to 6C are connected to the control unit 20 via signal lines, and control the supply of the fire extinguishing agent from the tank unit 2 to the discharge conduits 9A to 9C. When the selection valves 6A to 6C are closed, the fire extinguishing agent is not supplied from the tank unit 2 to the fire extinguisher radiating section 11 side, and when the selection valves 6A to 6C are opened, the fire extinguishing agent is moved from the tank unit 2 to the fire extinguisher radiating section 11 side. Fire extinguisher is supplied. The selector valves 6A to 6C are connected to discharge conduits 9A to 9C via check valves 7A to 7C, respectively.

The discharge conduits (secondary pipes) 9A to 9C connect the tank unit 2 and the fire extinguisher radiating section 11, and are provided for each of the three systems A to C in FIG. The discharge conduits 9A to 9C of the respective systems A to C branch into predetermined fire extinguishing sections A1, A2, B1, B2, C1, and C2, respectively, and the fire extinguishing agent radiating sections installed in the respective fire extinguishing sections A1 to C2. 11 is connected.
In addition, although three systems A to C and two predetermined fire extinguishing sections A, B, and C were used, at least two systems were required, and the fire extinguishing sections A, B, and C were If it is 1 or more, there is no need to make the same number.

  Further, a water supply device 31 is connected to the discharge conduits 9A to 9C via a water supply pipe 30. The discharge conduits 9A to 9C are filled with water by a water supply device 31 via a water supply pipe 30, and are in a state where a low water pressure is applied (wet type). The water supply pipe 30 is provided with shutoff valves 33A to 33C via check valves 32A to 32C for each of the systems A to C, and the shutoff valves 33A to 33C are connected to a control unit connected via a signal line (not shown). The supply of water from the water supply device 31 is interrupted by the command of 20.

  The fire detection unit 10 is, for example, a heat-sensitive open joint, is installed at the installation location of the fire extinguisher radiating unit 11, and detects a fire at the installation location. The thermal opening joint 10 is connected between the discharge conduits 9A to 9C and the fire extinguishing agent radiating section 11, and the valve opening of the thermal opening joint 10 is normally closed. The structure is such that the valve body is opened by the water pressure in 9C or the like. For example, when the temperature of the thermal opening joint 10 becomes higher than a predetermined temperature (for example, 60 ° C.), the valve body in the thermal opening joint 10 is opened. Then, the fire extinguishing agent is supplied to the plurality of fire extinguishing agent radiating portions 11 connected to the thermal opening joint 10, and the extinguishing agent is radiated from the plurality of fire extinguishing agent radiating portions 11 to the fire extinguishing section.

  The fire extinguishing agent radiating unit 11 radiates the fire extinguishing agent supplied from the tank unit 2 to extinguish the fire, and is connected to the tank unit 2 via discharge conduits 9A to 9C. The fire extinguisher radiating section 11 is formed of, for example, an open sprinkler head or a closed sprinkler head, and is installed in accordance with the size of the fire extinguishing sections A1 to C2. More specifically, the open-type sprinkler head is attached to the ceiling surface via a heat-sensitive open joint, which is a fire detector, when the fire extinguishing section is large and a plurality of sprinkler heads need to be attached. On the other hand, the closed sprinkler head has a narrow fire extinguishing section and can extinguish a fire with one sprinkler head. Instead of receiving the fire sensor separately, the heat sensing part of the closed sprinkler head is replaced by one. It may be provided on the ceiling surface. Note that the fire extinguishing sections A1 and C2 are set to be different from the adjacent fire extinguishing sections.

  In the package type automatic fire extinguishing equipment 1, a pressure switch 4B for detecting the opening of the start-up valve 4 is provided between the fire extinguishing agent storage container 2A and the pressurizing gas container 3, and the pressure in the discharge conduits 9A to 9C is reduced. Pressure detection sensors 21A to 21C are provided in each of the discharge conduits 9A to 9C.

  The control unit 20 controls the operation of the start valve 4, the selection valves 6A to 6C, and the shutoff valves 33A to 33C based on signals from the pressure switch 4B and the pressure detection sensors 21A to 21C. Specifically, when the control unit 20 obtains a pressure reduction signal from any of the pressure detection sensors 21A to 21C, the fire detection unit 10 detects a fire and the water stored in the secondary pipe is used as a fire extinguishing agent. It is determined that the light is emitted from the radiating unit 11. The control unit 20 opens the starting valve 4 and opens the selection valves 6A to 6C corresponding to the fire detection unit 10 that has detected the fire, and controls the fire extinguishing agent to be emitted from the fire extinguishing agent emitting unit 11. I do. At this time, the control unit 20 closes the shutoff valves 33A to 33C connected to the discharge conduits 9A to 9C from which radiation is performed, and stops the supply of water from the water supply device 31 to the discharge conduits 9A to 9C. Further, the control unit 20 detects from the output from the pressure switch 4B that the starting valve 4 has been normally opened, and if the starting valve 4 has not been normally opened, the control unit 20 and the display 40 indicate that. Is displayed.

  Here, for example, when a fire is first detected by the fire detection unit 10 in the fire extinguishing section A1 of the system A, the control unit 20 closes after opening the selection valve 6A of the system A for the set continuous open period RP1ref. An opening operation is performed, and thereafter, control is performed such that an intermittent opening operation in which the set intermittent opening period RP2ref is opened and the set closing period CPref is closed repeatedly. Further, when the fire is detected in the fire detection unit 10 of the fire extinguishing section B1 of a different system B, for example, when the selection valve 6A which is operated first is operated, the control unit 20 selects the selection valve 6B of a different system B. However, when performing the intermittent opening operation, control is performed so that opening and closing are performed at a timing synchronized with the selection valve 6A that has been operated first.

  Specifically, FIG. 2 is a flowchart showing an operation example of the package-type automatic fire extinguishing equipment of FIG. 1, and FIG. 3 is a diagram showing another fire extinguishing operation when a continuous opening operation is performed in one fire extinguishing section of FIG. FIG. 4 is a timing chart showing the opening and closing of the selection valve when a fire occurs in a section, and FIG. 4 shows that a fire was detected in another fire extinguishing section while an intermittent opening operation was performed in one fire extinguishing section. 6 is a timing chart showing opening and closing of a selection valve at the time. 2 to 4, an example is described in which a fire is first detected in the fire extinguishing section A1 of the system A, and then a fire is detected in the fire extinguishing section B2 of the system B.

  As shown in FIG. 2, when a fire first occurs in the fire extinguishing section A1, the fire detecting unit 10 is activated (step ST1), and the water stored in the discharge conduit 9A is radiated from the fire extinguisher radiating unit 11 (step ST1). Step ST2). Thereby, a pressure reduction signal is transmitted from the pressure detection sensor 21A to the control unit 20 (step ST3). When the fire detection in the fire extinguishing section A1 is the first fire detection (YES in step ST4), the control unit 20 opens the activation valve 4 and the selection valve 6A and closes the shutoff valve 33A (step ST5). Then, the fire extinguishing agent stored in the tank unit 2 passes through the primary pipe 8 of the discharge conduits 9A to 9C, the constant flow valve 5A, and the selection valve 6A, and passes through the discharge conduit 9A and the heat-sensitive open joint 10. Radiated from the radiation section 11.

  At this time, the control unit 20 keeps the selection valve 6A open until the continuous opening period RP1 during which the selection valve 6A is opened reaches a preset continuous opening period RP1ref (for example, 140 seconds) (step ST6). Thereafter, when the continuous open period RP1 becomes the set continuous open period RP1ref (YES in step ST6), the control unit 20 closes the selection valve 6A (step ST7). When there is a remaining amount of the fire extinguishing agent in the tank unit 2 (YES in step ST8), the control unit 20 closes the selection valve 6A until the closing period CP reaches the set closing period CPref (for example, 30 seconds) (step ST9). ). When the closing period CP reaches the set closing period CPref (YES in step ST9), the continuous opening operation of the selection valve 6A is completed.

  After the continuous opening operation is completed, the control unit 20 controls the selection valve 6A to perform the intermittent opening operation of the fire extinguishing agent. That is, the control unit 20 opens the selection valve 6A (step ST10), and continues to open the selection valve 6A until the intermittent opening period RP2 becomes equal to the set intermittent opening period RP2ref (for example, 30 seconds) (step ST11). Note that, in the setting intermittent open period RP2ref in the control unit 20, a period shorter than the set continuous open period RP1ref is set. When the intermittent open period RP2 becomes the set intermittent open period RP2ref (YES in step ST11), the control unit 20 closes the selection valve 6A (step ST7). Thereafter, the control unit 20 controls to perform an intermittent opening operation in which the set intermittent opening period RP2ref is opened and the set closing period CPref is closed until the extinguishing agent in the tank unit 2 runs out (steps ST7 to ST11, 3 (a) and 4 (a).

  Next, a case where a fire is detected at the heat-sensitive opening joint 10 in the fire extinguishing section B1 of a different system B when the initially operated selection valve 6A is operating will be described. Also in this case, the heat-sensitive release joint 10 of the fire extinguishing section B1 of the system B operates (step ST1), and water is discharged from the fire extinguishing agent radiating section 11 (step ST2). Then, a pressure reduction signal is transmitted from the pressure detection sensor 21B to the control unit 20 (step ST3). At this time, the control unit 20 determines that the fire detection of the system B is not the first fire detection (NO in step ST4), and opens the selection valve 6B and closes the shutoff valve 33B (step ST21).

  Next, the control unit 20 determines whether the selection valve 6A of the system A in which the first fire was detected is performing a continuous opening operation or an intermittent opening operation (step ST22). When the continuous opening operation is being performed in the fire extinguishing section A1, the control unit 20 determines that the fire is in a strong state, and controls the fire extinguishing section B1 to perform the continuous opening operation first.

  At this time, the control unit 20 has a function of setting the continuous open period RP1 according to the delay period DP1 from when the selection valve 6A opens to when the selection valve 6B opens (steps ST23 to ST25). Specifically, as shown in FIGS. 3B to 3E, the control unit 20 measures a delay period DP1 from the opening of the selection valve 6A to the opening of the selection valve 6B. Then, a predicted closing period from when the selection valve 6B closes to when it opens in synchronization with the selection valve 6A is calculated. As shown in FIGS. 3B to 3D, when the predicted closing period is equal to or longer than the set period Pref (for example, 10 seconds) (YES in step ST23), the control unit 20 sets the continuous open period RP1 to the set continuous open period. The selection valve 6B is controlled to be RP1ref (step ST24). Then, when the continuous open period RP1 becomes the set continuous open period RP1ref (YES in step ST24), the control unit 20 closes the selection valve 6B (step ST26) and checks the remaining amount of the fire extinguishing agent. (Step ST27). Thereafter, the control unit 20 controls the selection valve 6B such that the intermittent opening operation is performed at a timing synchronized with the selection valve 6A that has been operated first (steps ST28 to ST30).

  On the other hand, as shown in FIG. 3E, when the predicted closing period is shorter than the set period Pref (NO in step ST23), the control unit 20 synchronizes with the timing at which the initially operated selection valve 6A closes in the intermittent opening operation. And closes (YES in step ST25). The set delay period DP1ref is set based on a time required when the opening and closing operations of the selection valves 6A to 6C are continuously performed. That is, the opening and closing operations of the selection valves 6A to 6C each require a predetermined time (for example, about 4 seconds). As described above, when trying to synchronize the opening timing of the selection valve 6A and the selection valve 6B by shortening the closing period CP, the opening operation is performed again before the closing operation of the selection valve 6B is completed. Failures such as vibration may occur. Thus, when the predicted closing period is equal to or shorter than the set period Pref, the closing timing is not synchronized with the opening timing of the selection valve 6A and the selection valve 6B. After that, the control unit 20 performs control such that the selection valve 6A and the selection valve 6B perform an intermittent opening operation by opening and closing at a synchronized timing (steps ST26 to ST30).

  Next, when the initially opened selection valve 6A is performing an intermittent opening operation (NO in step ST22), the control unit 20 controls the selection valve 6B of the fire extinguishing section B1 to also start from the intermittent opening operation. . In this case, the fire has already tended to be extinguished after the continuous opening operation has been performed in the fire extinguishing section A1 of the system A. Therefore, by performing the intermittent opening operation without performing the continuous opening operation for the fire extinguishing section B1, the fire extinguishing activity can be performed efficiently.

  At this time, the control unit 20 has a function of setting the first intermittent opening period RP2 according to the delay period DP2 from when the selection valve 6A starts the intermittent opening operation to when the selection valve 6B opens (step ST31, ST32). That is, the control unit 20 measures the delay period DP2 from the start of the intermittent emission of the selection valve 6A to the opening of the selection valve 6B. Then, the control unit 20 calculates a predicted closing period from when the selection valve 6B closes to when it opens in synchronization with the selection valve 6A based on the delay period DP2. As shown in FIGS. 4B to 4D, when the predicted closing period is equal to or longer than the set period Pref (for example, 10 seconds) (YES in step ST31), the control unit 20 sets the selection valve 6B to the intermittent opening period RP2. Only (step ST32) and close the selection valve 6B (step ST26). Thereafter, the control unit 20 controls the selection valve 6B so as to be opened at a timing synchronized with the selection valve 6A that has been operated first (steps ST28 to ST30).

  On the other hand, as shown in FIG. 3E, when the predicted closing period is shorter than the set period Pref (NO in step ST31), the control unit 20 closes the selection valve 6B in synchronization with the timing at which the selection valve 6A closes. (Step ST33). Also in this case, as described above, the opening operation can be prevented from being performed again before the closing operation of the selection valve 6B is completed.

  According to the above embodiment, when the control unit 20 first detects a fire, it controls the selection valve 6A so that the intermittent opening operation is performed after the continuous opening operation, thereby suppressing the spread of fire in the fire section. can do. That is, the package type automatic fire extinguishing equipment 1 performs a fire extinguishing activity using a limited amount of fire extinguishing agent in the tank unit 2. Here, when the fire extinguishing agent is radiated from the fire extinguishing agent radiating section 11, the fire extinguishing agent may not be directly applied to the source of the fire, and even if the fire of the burning material is temporarily extinguished, the fire may reappear. However, if all the fire extinguishing agent in the tank unit 2 is radiated continuously at a time as in the related art, in the event of a fire again, the extinguishing agent to be re-emitted remains in the tank unit 2. No fire can be suppressed.

  On the other hand, in the package-type automatic fire extinguisher 1 of FIG. 1, all the fire extinguishing agent in the tank unit 2 is not radiated during the continuous opening period RP1, and the fire extinguishing agent is intermittently radiated after the continuous opening period RP1. Is controlled as follows. Thus, even in a case where the fire continues again after the fire extinguishing operation in the fire extinguishing section (fire extinguishing section), the fire extinguishing agent can be re-emitted and the fire extinguishing agent can be effectively used.

  Further, when a fire is detected in the system B after the operation of the selection valve 6A for the first time, the selection valve 6A and the selection valve 6B perform an intermittent opening operation in synchronization with each other, whereby the selection valve 6A and the selection valve 6B are operated. The fire suppression effect of the entire fire can be enhanced as compared with the case where the radiation control is independently performed.

  In addition, when the selection valve 6A to which radiation is first performed emits continuous radiation, and when the next selection valve 6B also performs continuous radiation, fire extinguishing in the fire extinguishing section A1 is different in a short period after detecting a fire. When a fire is detected in the section B1, it is assumed that the fire is strong, and by continuously radiating the fire in the fire extinguishing section B1, it is possible to surely suppress the spread of the fire. Furthermore, when the selection valve 6A that first radiated is performing intermittent radiation, and when the next selection valve 6B also performs intermittent radiation, the fire extinguishing agent is assumed to have a certain degree of momentum and the fire extinguishing agent is used. The spread of fire can be suppressed while using well.

  Embodiments of the present invention are not limited to the above embodiments. For example, FIGS. 3 and 4 illustrate a case where the continuous open period RP1 is 140 seconds, the closed period CP is 30 seconds, and the intermittent open period RP2 is 30 seconds. Can be set appropriately according to the conditions. Further, the case where the closing period CP in the continuous opening operation and the closing period CP in the intermittent opening operation are the same is illustrated, but periods of different lengths may be set.

  Although the package type automatic fire extinguishing equipment 1 of FIG. 1 is illustrated as a wet fire extinguishing equipment in which water is filled in the discharge conduits 9A to 9C, water is filled in the discharge conduits 9A to 9C. It does not have to be (dry fire extinguishing equipment). Further, FIG. 1 illustrates a case where the heat-sensitive opening joint 10 is interposed between the tank unit 2 and the fire extinguisher radiating section 11. May be used. Further, FIG. 1 illustrates a case where three discharge conduits 9A to 9C are branched and connected to the tank unit 2, but the tank unit 2 is connected to each of the plurality of discharge conduits 9A to 9C. It may be a structure. Even in these cases, by intermittently radiating the fire extinguishing agent, the fire extinguishing agent can be efficiently used for fire extinguishing activities.

  In the embodiment of the present invention, the operation of the heat-sensitive open joint 10 is detected when the pressure in the pipe is reduced by monitoring the pressure in the pipe, but the operation of the heat-sensitive open joint 10 is detected by the flow switch. May be. Further, in the embodiment of the present invention, the case where the fire detecting unit 10 is formed of the heat-sensitive open joint 10 is illustrated. However, the fire detecting unit 10 may be formed of, for example, a smoke detector and a heat detector.

  1 package type automatic fire extinguishing equipment, 2 tank unit, 2A fire extinguishing agent storage container, 3 pressurizing gas container, 4 start valve, 4A pressure regulator, 4B pressure switch, 5A to 5C constant flow valve, 6A to 6C selection valve, 7A ７7C check valve, 8 primary side piping, 9A９9C discharge conduit, 10 fire detection unit (heat sensitive joint), 11 fire extinguisher emission unit, 20 control unit, 21A２１21C pressure detection sensor, 30 water supply pipe, 31 Water supply device, 32A to 32C check valve, 33A to 33C shutoff valve, 40 display, AC system, A1 to C2 fire extinguishing section, CP closing period, CPref setting closing period, DP1, DP2 delay period, DP1ref, DP2ref setting Delay period, Pref setting period, RP1 continuous release period, RP1ref setting continuous release period, RP2 intermittent release period, RP2r f set intermittent opening period.

Claims (3)

A tank unit in which the fire extinguisher is stored,
A plurality of discharge conduits branched from the tank unit for each of a plurality of systems, and a fire extinguishing agent is supplied from the tank unit,
A plurality of fire extinguisher radiators connected to each of the plurality of discharge conduits and radiating a fire extinguishing agent flowing through the discharge conduit;
A selection valve that is provided for each of the plurality of discharge conduits and controls the supply of the fire extinguishing agent from the tank unit to the fire extinguishing agent radiating portion,
A fire detection unit that detects a fire at the installation location of the fire extinguisher radiating unit,
A control unit that controls the operation of the selection valve based on detection of a fire by the fire detection unit,
The controller is
After the selection valve of the system in which a fire is detected in the fire detection unit performs a continuous opening operation of opening and closing only for a set continuous opening period, the opening of the set intermittent opening period and the closing of the set closing period are repeated. A package-type automatic fire extinguishing system characterized by controlling to perform an intermittent opening operation. The control unit, when a fire is detected in the fire sensing unit of a different system when the selection valve that is operated first is performing a continuous opening operation, the selection valve of a different system performed a continuous opening operation. Control to perform intermittent release operation later,
When a fire is detected in the fire detection unit of a different system while the selection valve operated first performs the intermittent opening operation, control is performed such that the selection valve of a different system starts the intermittent opening operation. The package-type automatic fire extinguisher according to claim 1, characterized in that:   3. The package-type automatic fire extinguishing system according to claim 1, wherein the discharge conduit is filled with water by a water supply device through a water supply pipe, and is under a low water pressure. 4.

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