Fire extinguishing equipment

Abstract

To provide a fire extinguishing system that can satisfy legal installation standards by having the functions of both an automatic fire extinguishing system and an automatic fire alarm system, and that can be made smaller and less expensive. The system includes a plurality of fire detectors 15a, 15b that detect a fire occurring within a building and output a fire detection signal containing information about the location of the fire, and a receiver 11 that receives the fire detection signals output from the fire detectors 15a, 15b, and an automatic fire extinguishing system 101 that activates when the receiver 11 receives the fire detection signal and extinguishes the fire at the location where the fire has occurred.The system also includes a district sounding device 23 that identifies the location of the fire and issues an alert when the receiver 11 receives the fire detection signal.

Description

Technical Field

[0001] The present invention relates to a fire extinguishing facility that senses a fire occurring in a building and extinguishes the fire, and particularly to a technique that also serves as an automatic fire alarm facility that senses a fire and notifies the occurrence of the fire.

Background Art

[0002] Conventionally, as described in, for example, Patent Document 1, when a fire occurs in a building such as a hospital, there is known a fire extinguishing facility that operates a sprinkler facility or a packaged automatic fire extinguishing facility to extinguish the fire. The fire extinguishing facility has a plurality of fire sensors installed at appropriate locations in the building, and when a fire occurs, a receiving device receives a fire detection signal output from the fire sensors. The fire occurrence site is specified by the fire detection signal, and the sprinkler facility or the packaged automatic fire extinguishing facility is operated to extinguish the fire.

[0003] On the other hand, in buildings of a certain scale or more, it is obligatory to install an automatic fire alarm facility that notifies the occurrence of a fire separately from the above fire extinguishing facility. The automatic fire alarm facility installs a plurality of fire sensors at appropriate locations in the building, detects a fire when it occurs, and issues a notification signal. By sounding a buzzer or lighting an alarm lamp when the notification signal is issued, the occurrence and location of the fire can be notified to people around.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described above, the automatic fire alarm equipment and the fire extinguishing equipment are each provided separately, and there has been no consideration given to sharing the equipment provided in the automatic fire alarm equipment and the equipment provided in the fire extinguishing equipment. For example, although a fire detector that senses the occurrence of a fire is a device used in both the automatic fire alarm equipment and the fire extinguishing equipment, in reality, they are each provided separately.

[0006] This is because, by using a device certified as fire extinguishing equipment and a device certified as automatic fire alarm equipment respectively, it is possible to comply with the laws and regulations of the automatic fire alarm equipment, ensure its performance, and perform the operation as fire extinguishing equipment. Here, the above "certification" refers to a product that has been confirmed to meet the technical standards defined by laws and regulations such as the inspection system stipulated in the Fire Service Act, or a product that has been evaluated by a third-party institution to have performance equivalent to that of a product meeting the above technical standards.

[0007] Thus, conventionally, the equipment provided in the automatic fire alarm equipment and the equipment provided in the fire extinguishing equipment have not been shared, and there has been a problem of causing an increase in the size of the equipment due to an increase in the number of devices and a high cost of maintenance and inspection.

[0008] The present invention has been made to solve such conventional problems, and its object is to provide a fire extinguishing equipment that can satisfy the legal installation standards by having the functions of both the automatic fire extinguishing equipment and the automatic fire alarm equipment, and that can achieve miniaturization and cost reduction of the equipment.

Means for Solving the Problem

[0009] To achieve the above object, the invention of the present application includes a set of two or more closely arranged fire detectors that detect a fire occurring in a building and output a fire detection signal including information on the fire occurrence location, a receiving device that receives the fire detection signal output from the fire detector, a fire extinguishing agent storage box that stores a fire extinguishing agent used for extinguishing a fire, a fire extinguishing agent discharge port that discharges the fire extinguishing agent, a fire extinguishing agent pipe that guides the fire extinguishing agent stored in the fire extinguishing agent storage box to the fire extinguishing agent discharge port, a selection valve that sets a path of the fire extinguishing agent pipe, and a second repeater that is connected to the fire detector and the selection valve and is connected to the receiving device via a transmission line and communicates with the receiving device in a digital signal. has an automatic fire extinguishing facility that extinguishes fires at the fire occurrence location, When the fire detection signal is received in the receiving device, sounds a buzzer a district sound device for notifying the occurrence of a fire , and has a first repeater that relays notification signals to notify of the occurrence of a fire and automatic fire alarm equipment , and and, the receiving device includes a display unit that displays character information indicating the occurrence and location of the fire, the district sound device is connected to the receiving device via a first repeater, and when the fire detection signal is received in the receiving device, it specifies the fire occurrence location and receives a digital notification signal output from the receiving device via the first repeater to notify the occurrence of the fire.

Advantages of the Invention

[0010] According to the present invention, by having the functions of both fire extinguishing equipment and automatic fire alarm equipment, it is possible to meet the legal installation standards, and it is also possible to reduce the size and cost of the equipment. Therefore, there is no need to separately construct and install two pieces of equipment, namely automatic fire alarm equipment and fire extinguishing equipment, and it is expected to shorten the construction period and reduce the construction cost. Furthermore, since the control panel for controlling the fire extinguishing equipment and the control panel for controlling the automatic fire alarm equipment can be shared, it is possible to save space in the installation location.

Brief Description of the Drawings

[0011]

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MODE FOR CARRYING OUT THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the "fire extinguishing" in the present embodiment is a concept including the "fire extinguishing" of a fire actually occurring and the "fire prevention" of preventing the occurrence of a fire.

[0013] [Description of the First Embodiment] FIG. 1 is a system diagram showing the configuration of a fire extinguishing facility according to the first embodiment of the present invention. As shown in FIG. 1, the fire extinguishing facility according to the first embodiment includes an automatic fire extinguishing facility 101 and an automatic fire alarm facility 102.

[0014] The automatic fire extinguishing facility 101 includes a receiving device 11, a fire extinguishing agent storage box 12, selection valves 13a to 13c, a relay 14, fire detectors 15a, 15b, fire extinguishing agent discharge ports 16a to 16d, a manual activation device 17, a fire extinguishing agent pipe 18, and a transmission line 19. The fire detectors 15a, 15b, the selection valve 13c, and the fire extinguishing agent discharge ports 16a to 16d form a fire extinguishing section 51 installed in a warning section (for example, a living room, a washroom, a corridor, etc.) in the building.

[0015] Although FIG. 1 shows one fire extinguishing section 51, as shown in FIG. 4 described later, the fire extinguishing sections are provided for each section such as a living room, a washroom, and a corridor in the building. Therefore, a plurality of fire extinguishing sections 51 are usually provided in the automatic fire extinguishing facility 101.

[0016] In addition, as the automatic fire extinguishing facility 101, an automatic fire extinguishing facility that performs sectional simultaneous spraying, a foam fire extinguishing facility, a water sprinkler facility that sprays water from the ceiling, an open type sprinkler facility, and a water spray fire extinguishing facility that sprays water from a wall or a ceiling can be used. Further, as the fire extinguishing agent used in the automatic fire extinguishing facility 101, an inert gas fire extinguishing facility using an inert gas such as a mixed gas of nitrogen, argon, and carbon dioxide, a halide fire extinguishing facility using a halide, a powder fire extinguishing facility using powder, and a foam fire extinguishing facility using foam can be used. In the first embodiment, a fire extinguishing facility using powder, foam, an infiltrant, etc. will be described, and in the second embodiment described later, an example using an inert gas or a halogenated gas will be described.

[0017] The fire extinguishing agent storage box 12 is a tank for storing fire extinguishing agents used for fire extinguishing, and is installed at an appropriate location inside or outside the building (for example, on the rooftop). As the fire extinguishing agent, for example, powder fire extinguishing agents, foam fire extinguishing agents, wetting agents, etc. are used. Examples of powder fire extinguishing agents include sodium bicarbonate, potassium bicarbonate, phosphates, etc. The foam fire extinguishing agent extinguishes the fire by covering the surface of the combustible with foam and by the combined effects of the cooling effect of the moisture contained in the foam and the asphyxiating and blocking effects of the covered foam layer.

[0018] The fire extinguishing agent discharge ports 16a to 16d are discharge ports for spraying the fire extinguishing agent stored in the fire extinguishing agent storage box 12. For example, at one installation location, four discharge ports branched from the fire extinguishing agent pipe 18 are provided. Note that the number of discharge ports is not limited to four.

[0019] The fire extinguishing agent pipe 18 is a pipe for guiding the fire extinguishing agent stored in the fire extinguishing agent storage box 12 to the fire extinguishing agent discharge ports 16a to 16d.

[0020] The selection valves 13a to 13c are provided at appropriate locations on the fire extinguishing agent pipe 18, and their opening and closing are controlled by a control signal output from the receiving device 11. By controlling the opening and closing of the selection valves 13a to 13c, the path of the fire extinguishing agent pipe 18 is set so that the fire extinguishing agent is introduced into the desired fire extinguishing agent discharge port. For example, when spraying the fire extinguishing agent from the fire extinguishing agent discharge ports 16a to 16d shown in FIG. 1, the selection valves 13b and 13c are set to "open", and the other selection valves are set to "closed". By doing so, the fire extinguishing agent output from the fire extinguishing agent storage box 12 is supplied only to the fire extinguishing agent discharge ports 16a to 16d and is sprayed within the section where the fire extinguishing section 51 is installed. Note that although three selection valves 13a to 13c are shown in FIG. 1, since the selection valve is a valve for defining the path from the fire extinguishing agent storage box 12 to each fire extinguishing agent discharge port, it is appropriately installed according to the arrangement status of the fire extinguishing agent discharge ports.

[0021] The fire detectors 15a and 15b are sensors installed on the ceiling of the warning section or the like, which sense heat and smoke and notify the occurrence of a fire. In the automatic fire extinguishing equipment 101, two fire detectors are installed in a set for each warning section. That is, the two fire detectors 15a and 15b are installed close to each other to form a set of fire detectors. By doing so, it is possible to prevent the fire extinguishing agent from being unnecessarily sprayed due to the malfunction of the fire detector. In this embodiment, an example of installing two fire detectors 15a and 15b close to each other is shown, but a set of fire detectors may be configured with three or more fire detectors. Note that the fire detectors 15a and 15b may be configured to sense light or electromagnetic waves, or to capture an ambient image to detect the occurrence of a flame, or a combination thereof, in addition to the configuration of sensing the above-mentioned heat and smoke.

[0022] Further, when the fire detectors 15a and 15b sense the occurrence of a fire or smoke, they output a fire occurrence signal notifying the occurrence of a fire. The fire occurrence signal includes position information for specifying the section where the fire has occurred.

[0023] The manual activation device 17 is an operator manually operated by an operator such as a person who discovers a fire. By selecting and operating the section (such as a living room) where the fire extinguishing agent is to be sprayed, a release command signal for the fire extinguishing agent is output. The release command signal is transmitted to the receiving device 11.

[0024] The repeater 14 is a device that relays when connecting each device such as each of the fire detectors 15a and 15b, the selection valve 13c, and the manual activation device 17 to the receiving device 11 via the transmission line 19.

[0025] When the fire detectors 15a and 15b detect the occurrence of a fire, the receiving device 11 receives the fire detection signals output from the fire detectors 15a and 15b, and outputs control signals to the above-described fire extinguishing agent storage box 12 and each of the selection valves 13a to 13c. Specifically, based on the position information included in the fire detection signal, the section where the fire has occurred is specified, and the fire extinguishing section provided in the specified section is activated to extinguish the fire. For example, when activating the fire extinguishing section 51 shown in FIG. 1, the output valve of the fire extinguishing agent storage box 12 is opened to release the fire extinguishing agent. Further, the selection valve 13a is set to "closed", and both the selection valves 13b and 13c are set to "open". The fire extinguishing agent discharged from the fire extinguishing agent storage box 12 reaches the fire extinguishing agent discharge ports 16a to 16c via the fire extinguishing agent pipe 18 and the selection valves 13b and 13c, so that the fire extinguishing agent can be sprayed within the section where the fire has occurred.

[0026] In this embodiment, an R-type receiving device (R-type receiver) is used as the receiving device 11. As is well known, the R-type receiving device (R-type receiver) transmits the fire detection signals output from the fire detectors 15a and 15b via the transmission line 19, converts the fire detection signals output from the fire detectors 15a and 15b into digital signals by the repeater 14, and transmits them to the receiving device 11. With such a configuration, the number of wirings can be reduced and the construction cost of wiring installation can be reduced. That is, the R-type indicates the form of a transmission and reception device that uses transmission signals between the sensor and the receiver and between the repeater and the receiver. Transmission signals such as fire detection signals are transmitted and received as signals of a specific message.

[0027] On the other hand, the automatic fire alarm facility 102 shown in FIG. 1 includes repeaters 21a, 21b, 21c, a gas detector 22, a district sound device 23 (alarm), a termination resistor 24 provided at the end of the district sound device 23, and a transmitter 25. Each of the repeaters 21a to 21c is connected to the receiving device 11 via a transmission line 26.

[0028] The gas detector 22 is provided in a living room or the like, detects a gas leak when it occurs, and outputs a gas leak occurrence signal to the receiving device 11 via the repeater 21a.

[0029] The transmitter 25 is, for example, a push button operated by an operator. When the transmitter 25 is operated, a fire occurrence signal is output. The fire occurrence signal is output to the receiving device 11. The fire occurrence signal output from the transmitter 25 includes the position information where this transmitter 25 is installed.

[0030] When a fire detection signal is input to the receiving device 11, the area sound device 23 sounds a buzzer sound (main sound) to notify the occurrence of a fire. Specifically, when a fire detection signal is output from the aforementioned fire detectors 15a, 15b, or when the transmitter 25 is operated and a fire occurrence signal is output, a notification signal is output from the receiving device 11. This notification signal is sent to the area sound device 23 via the repeater 21b, and since a buzzer sound is emitted from the area sound device 23, the occurrence of a fire can be notified to the people inside the building.

[0031] Furthermore, the receiving device 11 outputs a fire occurrence signal indicating that a fire has occurred to the smoke control equipment, alarm equipment, or other equipment via the repeater 21c. When the fire occurrence signal is output, for example, the smoke control equipment is activated to prevent the entry of smoke into a desired section, or the smoke inside the desired section is discharged to the outside. Furthermore, by automatically transmitting the fire occurrence signal to the fire department, the occurrence of a fire can be reported promptly.

[0032] Figure 2 is an explanatory diagram showing the appearance of the receiving device 11. As shown in Figure 2, the receiving device 11 includes an operation unit 111 for performing various operation inputs, display units 112, 115 for displaying various information, a speaker 113 for outputting sounds such as alarm sounds, and a printer 114.

[0033] Figure 3 is an example display of the information displayed on the display unit 115 of the receiving device 11. As shown in Figure 3, when a fire occurs, information indicating the occurrence of the fire and the place where it occurred is displayed on the display unit 115.

[0034] [Installation example of fire extinguishing equipment] Next, an example of installing the fire extinguishing equipment shown in FIG. 1 will be described with reference to the floor plan of the building (for example, a hospital) shown in FIG. 4. As shown in FIG. 4, in the building, there are provided four rooms 61, 62, 63, 64, a corridor 65, washrooms 66, 67, and a staircase room 68.

[0035] Outside the room 64, three fire extinguishing agent storage boxes 12a, 12b, 12c are provided. Each of the fire extinguishing agent storage boxes 12a, 12b, 12c is connected to the fire extinguishing agent pipes 18a, 18b, 18c via selection valves 13d, 13e, 13f, respectively.

[0036] The fire extinguishing agent pipe 18a is connected to the fire extinguishing section 51c of the room 63 and the fire extinguishing section 51g of the washroom 67. The fire extinguishing agent pipe 18b is connected to the fire extinguishing section 51b of the room 62, the fire extinguishing section 51d of the room 64, and the fire extinguishing section 51f of the washroom 66. The fire extinguishing agent pipe 18c is connected to the fire extinguishing section 51a of the room 61 and the fire extinguishing section 51e of the corridor. Each of the fire extinguishing sections 51a - 51g has the same configuration as the fire extinguishing section 51 shown in FIG. 1. That is, it is provided with two fire detectors, a selection valve, and four fire extinguishing agent discharge ports.

[0037] Also, in the staircase room 68 shown in FIG. 4, no fire extinguishing section is provided, and only the fire detector 52 is installed. By law, in a hospital, rooms, washrooms, corridors, etc. need to be protected by automatic fire extinguishing equipment. On the other hand, elevator shafts, staircase rooms, etc. do not need to be protected by automatic fire extinguishing equipment, but need to be monitored by automatic fire alarm equipment. Therefore, only the fire detector 52 is provided in the staircase room 68.

[0038] That is, the building consists of a first section (such as the above rooms) where the installation of automatic fire extinguishing equipment is mandatory, and a second section (such as the above staircase room) where the installation of automatic fire extinguishing equipment is exempted. The automatic fire extinguishing equipment extinguishes the fire when a fire detection signal is output from the fire detector installed in the first section. Also, the area sound device 23 (see FIG. 1) notifies of a fire when a fire detection signal is output from the fire detectors installed in the first section and the second section.

[0039] FIG. 5 is an explanatory diagram showing another example of installing fire extinguishing equipment. FIG. 5 shows a state of installing fire extinguishing equipment in a hospital, and shows an example in which A on the first floor is a nurse station and B on the second floor is a living room. As shown in FIG. 5, a receiving device 11 and a fire extinguishing agent storage box 12a are provided on the first floor A. In addition, two fire detectors 15c, 15d, selection valves 13g, 13h, and four fire extinguishing agent discharge ports 16e, 16f, 16g, 16h are provided on the second floor B. Further, a fire extinguishing agent storage box 12d is provided on the ceiling of the living room on the second floor B.

[0040] Therefore, when a fire occurs on the second floor B, the fire detectors 15c, 15d detect the occurrence of the fire, and the receiving device 11 notifies the person staying at the nurse station of the fire. Further, the fire extinguishing agent is discharged from the fire extinguishing agent storage box 12d, and the fire extinguishing agent is sprayed from each of the fire extinguishing agent discharge ports 16e to 16h to extinguish the fire.

[0041] [Explanation of the installation standards of the fire detectors of the fire extinguishing equipment] In the present embodiment, as described above, the fire detectors 15a, 15b and the receiving device 11 used in the automatic fire extinguishing equipment 101, which have been conventionally required to be installed by the Fire Service Act, are also shared with the fire detectors and the receiving device used in the automatic fire alarm equipment 102, which is also required to be installed by the Fire Service Act, thereby simplifying the configuration of the entire equipment, saving the installation space, and reducing the installation cost.

[0042] FIG. 6 is an explanatory diagram showing the installation conditions of the fire detectors of the automatic fire extinguishing equipment and the automatic fire alarm equipment (abbreviated as "automatic fire alarm" in the figure).

[0043] As shown in FIG. 6, for the automatic fire alarm equipment, when the installation height of the fire detector (ceiling height when installed on the ceiling) is less than 4.0 m, whether it is a smoke detection type fire detector, one is required to be installed per 150 m2; for differential two types and fixed temperature special type fire detectors, one is required to be installed per 40 m2. For other conditions, it is as shown in the figure. Note that the "smoke detection type" is a type that detects the concentration of smoke to sense a fire, the "differential two types" is a type that detects the temperature difference within a certain time to sense a fire, and the "fixed temperature special type" is a type that senses a fire when the temperature exceeds a certain value.

[0044] On the other hand, for the automatic fire extinguishing equipment, when the installation height of the fire detector is less than 6.0 m, one set is required to be installed per 21 m2. For other conditions, it is as shown in the figure. Note that "one set" means arranging two or more than two fire detectors in close proximity at the same location.

[0045] As can be understood from the installation conditions of the fire detectors shown in FIG. 6, the installation conditions (the number of installations per unit area) of the fire detectors stipulated in the installation standards of the automatic fire extinguishing equipment are more stringent than the installation conditions of the fire detectors stipulated in the installation standards of the automatic fire alarm equipment. Therefore, by sharing some or all of the fire detectors installed in the automatic fire extinguishing equipment and the fire detectors installed in the automatic fire alarm equipment, the total number of fire detectors to be installed can be reduced. However, in areas outside the warning sections of the automatic fire extinguishing equipment, such as the staircase room 68 shown in FIG. 2, fire detectors are installed separately from the automatic fire extinguishing equipment.

[0046] Furthermore, by sharing the receiving device 11 that comprehensively controls the automatic fire extinguishing equipment 101 with the automatic fire alarm equipment 102, the control panels installed in the building are unified.

[0047] Since the installation conditions of the fire detectors shown in FIG. 6 are installation standards, installations with higher density can be made. For example, the "one set per 21 m2" in the installation conditions of the fire detectors of the automatic fire extinguishing equipment may be changed to "one set or more per 21 m2".

[0048] [Explanation of the Operation of the First Embodiment] Next, the operation of the fire extinguishing equipment according to the first embodiment will be described with reference to the flowcharts and flow diagrams shown in FIGS. 7 to 12.

[0049] (Operation of the Fire Extinguishing Equipment) FIG. 7 is a flowchart showing the operation of the automatic fire extinguishing equipment 101 when a fire occurs within the protected area of the building, and FIG. 8 is a flow diagram corresponding to FIG. 7. Note that the step numbers shown in FIG. 7 and the step numbers shown in FIG. 8 are described in association with each other.

[0050] First, in step S11 of FIGS. 7 and 8, for example, when a fire occurs in a living room within the building, the fire detectors 15a and 15b provided in this living room detect the fire.

[0051] In step S12, when a fire is detected by one of the fire detectors (here, the fire detector 15a), the fire detection signal is transmitted to the receiving device 11 via the transmission line 19.

[0052] In step S13, the receiving device 11 displays various information related to the occurrence of the fire on the display unit 112 shown in FIG. 2. For example, as shown in FIG. 3, information specifying the location where the fire occurred, such as "Fire, Area 151, Floor 02, Building 1", is displayed.

[0053] In step S14, the receiving device 11 outputs a fire occurrence signal. The fire occurrence signal is output to the area acoustic device 23 installed at appropriate locations (corridors, living rooms, guard rooms, etc.) within the building via the repeater 21b.

[0054] Furthermore, in step S15, the fire occurrence signal is output to the smoke control and exhaust equipment and the alarm equipment via the repeater 21c. As a result, the smoke control and exhaust equipment installed at appropriate locations within the building operates to discharge the smoke generated at the fire site and its surroundings to the outside. Or alarm equipment such as fire lights operates.

[0055] In step S16, the receiving device 11 determines whether the two fire detectors 15a and 15b are operating simultaneously.

[0056] If it is determined that the two fire detectors 15a and 15b are operating simultaneously, in step S17, the receiving device 11 activates the automatic fire extinguishing equipment 101.

[0057] In step S18, the receiving device 11 sprays the fire extinguishing agent. Specifically, the receiving device 11 outputs an activation signal to the fire extinguishing agent storage box 12 shown in FIG. 1. Further, the opening and closing of the selection valve is controlled so that the fire extinguishing agent is supplied to the fire extinguishing agent pipe 18 leading to the fire extinguishing agent discharge port in the living room where the fire has occurred. For example, when spraying the fire extinguishing agent from the fire extinguishing agent discharge ports 16a to 16d shown in FIG. 1, the selection valves 13b and 13c are set to "open" and the other selection valves are set to "closed" to control the spraying of the fire extinguishing agent to the desired area.

[0058] In this way, the fire extinguishing agent can be sprayed into the section (e.g., the living room) where the fire has occurred, and it becomes possible to extinguish the fire.

[0059] (Operation of the fire extinguishing equipment by manual operation) Next, with reference to the flowchart shown in FIG. 9 and the flow diagram shown in FIG. 10, the processing procedure for operating the automatic fire extinguishing equipment 101 by manual operation will be described. The step numbers shown in FIG. 9 and the step numbers shown in FIG. 10 are described in association with each other.

[0060] First, in step S31 of FIGS. 9 and 10, for example, when a fire occurs in a living room in a building, in step S32, a person in the living room visually confirms the occurrence of the fire.

[0061] In step S33, the receiving device 11 determines whether the manual activation device 17 shown in FIG. 1 has been operated. If the manual activation device 17 is operated by a person who discovers the fire or the like, the process proceeds to step S34; if not, the process returns to step S32.

[0062] In step S34, the receiving device 11 displays various types of information related to the occurrence of a fire on the display unit 115 shown in FIG. 3.

[0063] In step S35, the receiving device 11 outputs a fire occurrence signal. The fire occurrence signal is output via the repeater 21b to the zone sound device 23 installed at appropriate locations (such as corridors, living rooms, guard rooms, etc.) within the building.

[0064] Furthermore, in step S36, the fire occurrence signal is output via the repeater 21c to the smoke control and exhaust equipment and alarm equipment. As a result, the smoke control and exhaust equipment installed at appropriate locations within the building operates to discharge the smoke generated at the fire site and its surrounding areas to the outside. Alternatively, alarm equipment such as fire lights operates.

[0065] In step S37, the receiving device 11 activates the automatic fire extinguishing equipment 101. In step S38, the receiving device 11 sprays the fire extinguishing agent. Specifically, the receiving device 11 outputs an activation signal to the fire extinguishing agent storage box 12 shown in FIG. 1. Further, the opening and closing of the selection valve 13 is controlled so that the fire extinguishing agent is supplied to the fire extinguishing agent pipe 18 leading to the fire extinguishing agent discharge ports 16 in the living room where the fire has occurred. For example, when extinguishing a fire by spraying the fire extinguishing agent from the fire extinguishing agent discharge ports 16a to 16d shown in FIG. 1, the selection valves 13b and 13c are set to "open" and the other selection valves are set to "closed" to control the spraying of the fire extinguishing agent to the desired area.

[0066] In this way, the fire extinguishing agent can be sprayed into the section (for example, the living room) where the fire has occurred, making it possible to extinguish the fire.

[0067] (Operation of the Automatic Fire Alarm Equipment) Next, with reference to the flowchart shown in FIG. 11 and the flow diagram shown in FIG. 12, the processing procedure for operating the automatic fire alarm equipment will be described.

[0068] FIG. 11 is a flowchart showing the operation of the fire notification device 102 when a fire occurs within the protected area of a building, and FIG. 12 is a flowchart corresponding to FIG. 11. The step numbers shown in FIG. 11 and the step numbers shown in FIG. 12 are described in association with each other.

[0069] First, in step S51 of FIGS. 11 and 12, for example, when a fire occurs in a living room within a building, one or both of the fire sensors 15a and 15b provided in this living room detect the fire.

[0070] In step S52, the fire detection signals detected by the fire sensors 15a and 15b are transmitted to the receiving device 11 via the transmission line 19.

[0071] In step S53, the receiving device 11 displays various types of information related to the occurrence of the fire on the display unit 112 shown in FIG. 3.

[0072] In step S54, the receiving device 11 outputs a fire occurrence signal. The fire occurrence signal is output to the area acoustic device 23 installed at appropriate locations (corridors, living rooms, guard rooms, etc.) within the building via the repeater 21b.

[0073] Furthermore, in step S55, the fire occurrence signal is output to the smoke control and exhaust equipment and the alarm equipment via the repeater 21c. As a result, the smoke control and exhaust equipment installed at appropriate locations within the building operates to discharge the smoke generated at the fire occurrence site and its surroundings to the outside. Or alarm equipment such as fire lights operates. In this way, when a fire occurs, a fire detection signal is output by the fire sensor provided at the fire occurrence location, and the occurrence of the fire is notified to the people within the building.

[0074] In this way, the fire extinguishing equipment according to the first embodiment can achieve the following actions and effects.

[0075] (1) The automatic fire extinguishing equipment 101 is equipped with fire detectors 15a and 15b and a receiving device 11. When a fire is detected by the fire detectors 15a and 15b, the fire extinguishing agent released from the fire extinguishing agent storage box 12 is sprayed from the fire extinguishing agent outlets 16a to 16d. Therefore, when a fire occurs, the fire can be extinguished quickly by spraying the fire extinguishing agent. Further, when the occurrence of a fire is detected by the fire detectors 15a and 15b, the area sound device 23 is activated to notify the occurrence of the fire. For this reason, when a fire occurs, the occurrence of the fire can be quickly notified to the people in the building. Also, unlike the conventional configuration where the automatic fire extinguishing equipment 101 and the automatic fire alarm equipment 102 are provided separately, the fire detectors 15a and 15b are shared by the automatic fire extinguishing equipment 101 and the automatic fire alarm equipment 102. Similarly, the receiving device 11 is shared.

[0076] By having the functions of the two pieces of equipment, namely the automatic fire extinguishing equipment 101 and the automatic fire alarm equipment 102, the legal installation standards can be met, and it is possible to reduce the size and cost of the equipment. Also, there is no need to install the two pieces of equipment, the automatic fire extinguishing equipment 101 and the automatic fire alarm equipment 102, separately through construction, and it is possible to shorten the construction period and reduce the construction cost. Further, since the receiving device 11 is shared, it is possible to save space in the installation location, which is extremely useful in small-scale hospitals and the like.

[0077] (2) The automatic fire extinguishing equipment 101 has a set of fire detectors consisting of two or more fire detectors (two fire detectors 15a and 15b in FIG. 1). When the fire detection signals output from all the fire detectors are received by the receiving device 11, at the fire occurrence location, the fire extinguishing agent is sprayed to extinguish the fire. For this reason, it is possible to prevent the occurrence of troubles such as the unnecessary spraying of the fire extinguishing agent due to the malfunction of the fire detector.

[0078] (3) When a fire detection signal is output from at least one of the fire detectors 15a and 15b, the occurrence of a fire is notified by the area acoustic device 23 (alarm). Therefore, the occurrence of a fire can be notified quickly. Furthermore, even if one of the two fire detectors 15a and 15b malfunctions, the other fire detector operates to notify the occurrence of a fire, so the occurrence of a fire can be notified quickly and surely.

[0079] (4) As the automatic fire extinguishing equipment 101, at least one of the automatic fire extinguishing equipment for compartmentalized simultaneous discharge, foam fire extinguishing equipment, deluge sprinkler equipment, open sprinkler equipment, and water spray fire extinguishing equipment is used, so that the size of the device can be reduced, and furthermore, when a fire occurs, it is possible to surely extinguish the fire by spraying fire extinguishing agents or water.

[0080] (5) The R-type receiver (R-type receiver) is used as the receiver 11. The R-type receiver (R-type receiver) converts each signal into a digital signal by a repeater and transmits it to the receiver 11, so the number of wirings can be reduced and the construction cost of wiring installation can be reduced.

[0081] (6) In the building, there are a first compartment such as a living room where the installation of the automatic fire extinguishing equipment 101 is obligatory, and a second compartment such as a staircase room where the installation of the automatic fire extinguishing equipment 101 is exempted. The automatic fire extinguishing equipment 101 extinguishes the fire when a fire detection signal is output from the fire detector installed in the first compartment. The area acoustic device 23 (alarm) notifies the fire when a fire detection signal is output by at least one of the fire detectors installed in the first compartment and the second compartment. Therefore, the fire detection signal when operating the automatic fire extinguishing equipment 101 and the fire detection signal when operating the automatic fire alarm equipment 102 can be distinguished, and the functions of both can be surely executed.

[0082] [Description of the Second Embodiment] Next, a second embodiment of the present invention will be described. In the first embodiment described above, an example of extinguishing a fire by spraying a powder fire extinguishing agent, a foam fire extinguishing agent, an infiltrant, etc. using an automatic fire extinguishing facility that performs sectional simultaneous radiation has been described. In the second embodiment, an example of extinguishing a fire using an inert gas will be described. In the apparatus configuration shown in FIG. 1 described above, instead of the fire extinguishing agent storage box 12, a container for filling with an inert gas is used, and the fire extinguishing agent discharge ports 16a to 16d discharge an inert gas instead of the fire extinguishing agent. Since the rest is the same as in FIG. 1, detailed description will be omitted.

[0083] Fire extinguishing facilities using an inert gas are suitable for use in compartments where secondary damage or damage is likely to occur, such as a generator room, a communication equipment room, a computer room, a data processing room, a museum, an art museum, a storage room for important cultural properties, a dangerous goods warehouse, etc., by spraying water or chemicals.

[0084] Hereinafter, the processing operation of the fire extinguishing facility according to the second embodiment will be described with reference to the flowchart shown in FIG. 13.

[0085] When a fire breaks out in a communication equipment room or the like, the fire detector 15a senses the fire in step S71. In step S72, the receiving device 11 identifies the compartment where the fire has occurred from the fire detection signal output from the fire detector 15a.

[0086] In step S73, the receiving device 11 lights the fire lamp or sounds the area acoustic device 23 (for example, a buzzer) to notify that a fire has occurred. Further, the fire detection signal is relayed to other alarm devices.

[0087] In step S74, the fire detector 15b senses the fire. In step S75, the receiving device 11 stops the devices in the compartment where the fire has occurred. Further, in step S76, a shutter (not shown) in the compartment where the fire has occurred is closed. That is, the surroundings of the compartment where the fire has occurred are made airtight.

[0088] In step S77, the receiving device 11 activates a built-in timer (not shown) and measures the elapsed time after the shutter is closed.

[0089] In step S78, the receiving device 11 determines whether the time measured by the timer has reached a preset predetermined time. If the predetermined time is reached, in step S79, the selection valve is controlled. That is, the flow path of the inert gas is set so that the inert gas is supplied limitedly to the section where the fire has occurred.

[0090] In step S80, the receiving device 11 switches the on-off valve of the container (not shown) for filling the inert gas from "closed" to "open" and releases the inert gas from the container. As a result, since the released inert gas is released to the discharge port installed in the section where the fire has occurred, the fire can be extinguished.

[0091] In this way, also in the fire extinguishing equipment according to the second embodiment, as in the first embodiment described above, the fire detector used in the automatic fire extinguishing equipment using the inert gas is also used as the fire detector used in the automatic fire alarm equipment. Furthermore, the receiving device 11 is also used in common. For this reason, simplification and miniaturization of the device scale can be achieved, and the installation cost can be reduced.

[0092] In addition, since an inert gas fire extinguishing equipment or a halide fire extinguishing equipment is used as the automatic fire extinguishing equipment 101, for example, even in an environment where releasing water or chemicals may damage the equipment, such as a communication equipment room, by releasing the inert gas, it is possible to extinguish the fire without damaging the equipment.

[0093] As described above, although the embodiments of the present invention have been described, it should not be understood that the discussions and drawings forming a part of this disclosure limit this invention. Various alternative embodiments, examples and operation techniques will be apparent to those skilled in the art from this disclosure.

Explanation of reference numerals

[0094] 11 Receiver 12, 12a - 12c Fire extinguishing agent storage boxes 13, 13a - 13h Selective valves 14, 21a, 21b, 21c Repeaters 15a - 15d, 52 Fire detectors 16, 16a - 16d Fire extinguishing agent discharge outlets 17 Manual activation device 18, 18a - 18c Pipes for fire extinguishing agent 19 Transmission line 22 Gas detector 23 Area sound device 24 Terminal resistance 25 Transmitter 26 Transmission line 51, 51a - 51g Fire compartments 61, 62, 63, 64 Bedrooms 65 Corridor 66, 67 Washrooms 68 Stairwell 101 Automatic fire extinguishing equipment 102 Automatic fire alarm equipment 111 Operation unit 112 Display unit 113 Speaker 114 Printer

Claims

1. A set of two or more closely arranged fire detectors that sense a fire occurring within a building and output a fire detection signal including information on the fire occurrence location, A receiving device that receives the fire detection signal output from the fire detector, A fire extinguishing agent storage box that stores a fire extinguishing agent used for fire extinguishing, A fire extinguishing agent discharge port that discharges the fire extinguishing agent, A fire extinguishing agent pipe that guides the fire extinguishing agent stored in the fire extinguishing agent storage box to the fire extinguishing agent discharge port, A selection valve that sets the path of the fire extinguishing agent pipe, A second relay that is connected to the fire detector and the selection valve and is connected to the receiving device via a transmission line and communicates with the receiving device in a digital signal, and an automatic fire extinguishing facility that extinguishes a fire at the fire occurrence location, An automatic fire alarm facility that has a local sound device that sounds a buzzer to notify of the occurrence of a fire when the fire detection signal is received at the receiving device, and a first relay that relays the notification signal, Comprising, The receiving device includes a display unit that displays character information indicating the occurrence of a fire and the location of the fire, The local sound device, Is connected to the receiving device via the first relay, and when the fire detection signal is received at the receiving device, it specifies the fire occurrence location and receives the digital notification signal output from the receiving device via the first relay to notify of the occurrence of a fire A fire extinguishing facility characterized by this.

2. A first section where the installation of the automatic fire extinguishing facility is mandatory, and The first section includes the fire detector, the second relay, the selection valve, and the fire extinguishing agent discharge port, and the fire detector and the selection valve are connected to the receiving device via the second relay, When a fire detection signal is output from the fire detector installed in the first section, the automatic fire extinguishing facility extinguishes a fire by discharging a fire extinguishing agent from the fire extinguishing agent discharge port in the first section. The fire extinguishing facility according to claim 1.

3. A fire extinguishing facility that senses a fire occurring in a building equipped with a second section where the installation of the automatic fire extinguishing facility is exempted and extinguishes the fire, The second section includes the fire detector and does not include the fire extinguishing agent discharge port, The local sound device notifies of a fire when a fire detection signal is output from at least one of the fire detectors installed in the first section and the second section. The fire extinguishing facility according to claim 2.

4. The fire detector installed in the first section is arranged with two or three or more detectors in proximity to each other at 21 m. ２ The fire extinguishing equipment according to claim 2, wherein two or three or more of them are arranged in proximity to each other at 21 m.

5. The fire extinguishing equipment according to claim 3, wherein the first compartment includes at least one of a living room, a washroom, and a corridor, and the second compartment includes a staircase room.

6. The fire extinguishing equipment according to claim 1, wherein at least one of the area sound device, the gas detector, and the transmitter is connected to the first repeater.

7. A set of two or more fire detectors arranged close to each other that sense a fire occurring in a building and output a fire detection signal including information on the fire occurrence location; A receiving device that receives the fire detection signal output from the fire detector; A fire extinguishing agent storage box that stores a fire extinguishing agent used for fire extinguishing; A fire extinguishing agent discharge port that discharges the fire extinguishing agent; A fire extinguishing agent pipe that guides the fire extinguishing agent stored in the fire extinguishing agent storage box to the fire extinguishing agent discharge port; A selection valve that sets the path of the fire extinguishing agent pipe; A second repeater that is connected to the fire detector and the selection valve and is connected to the receiving device via a transmission line and communicates with the receiving device in a digital signal, and an automatic fire extinguishing equipment that extinguishes a fire at the fire occurrence location; An area sound device that sounds a buzzer to notify of the occurrence of a fire when the fire detection signal is received by the receiving device, and a transmitter that transmits a fire occurrence signal including location information to the receiving device by an operator's operation, and an automatic fire alarm equipment that notifies of the occurrence of a fire; Comprising: The automatic fire extinguishing equipment further includes a manual activation device that selects a compartment by manual operation and sprays a fire extinguishing agent; The receiving device is provided with a display unit that displays character information indicating the occurrence of a fire and the location of the fire; A fire extinguishing equipment characterized by the above.

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