JP2003225322A - Disaster prevention facilities - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide disaster prevention facilities which can ensure the exhausting of smoke in case of a fire. <P>SOLUTION: When a spray of water from a sprinkler head 2 is detected by a water-flow detector 8, this system opens the corresponding smoke exhaust hole 4. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention facility for extinguishing fire and exhausting smoke, and more particularly to a disaster prevention facility devising a method of exhausting smoke in a space where a sprinkler facility suppresses fire.

[0002]

2. Description of the Related Art Conventionally, when smoke is emitted in the event of a fire, a resident who recognizes that smoke has exceeded a predetermined level has to manually open the smoke outlet of a smoke exhaust facility or a management room such as a disaster prevention center or a security room. After the manager who recognizes the fire occurrence by the notification of the fire alarm in, specifies the fire occurrence location (smoke exhaust section, etc.) on the display panel of the fire alarm and opens the corresponding smoke exhaust port by remote control.

When the smoke exhaust port is opened, the smoke evacuator operates according to the signal and smoke is exhausted through the smoke exhaust port and the smoke exhaust duct. There is also a smoke exhaust facility that automatically opens the smoke exhaust port in conjunction with the detection of the smoke detector. Also,
The sprinkler equipment operates non-interlockingly with the smoke exhaust equipment, and when a heat detector or the like detects a fire, it sprinkles water from the sprinkler head to extinguish the fire.

[0004]

However, the method of opening the smoke exhaust port manually or by remote control as described above is because of the problem of the location of the operation button, the rush to the site, the initial fire extinguishing, etc. In many cases, it is difficult to turn on the smoke, and the reliability of operation for smoke emission is low. Here, if the smoke exhaust facility does not operate, there is a possibility that smoke generated by a fire or smoke containing water vapor generated when water is sprinkled by a sprinkler cannot be effectively discharged.

Further, when the smoke exhaust equipment operates in conjunction with the smoke detector, the smoke exhaust equipment may malfunction even though no fire has occurred because the smoke detector is not sufficiently reliable. . For example, it may malfunction if smoking is done near the smoke detector. Further, when smoke is discharged without operating the sprinkler, the damper may be closed due to a rapid temperature rise, and smoke may be stopped in a short time.

Further, when the sprinkler operates, even if the fire is extinguished, watering will continue unless the valve is closed. Generally, fire departments close fire sites,
Water damage in the room may occur. The present invention has been made in view of the above points, and an object of the present invention is to provide a disaster prevention facility that can reliably discharge smoke when a fire occurs.

[0007]

In order to solve the above-mentioned problems, the invention described in claim 1 of the present invention is to detect water sprinkling from a sprinkler head in a disaster prevention facility equipped with a sprinkler facility and a smoke exhaust facility. Is provided, and the smoke exhaust facility discharges smoke based on a water spray detection signal from the water spray detection unit.

Next, in the invention described in claim 2, in contrast to the structure described in claim 1, the sprinkler detecting means is a flowing water detecting device provided in a pipe line for supplying water to the sprinkler head. It is characterized by. Next, according to the invention described in claim 3, in contrast to the configuration described in claim 1 or 2, the disaster prevention target space is divided into a plurality of sections,
An independent sprinkling detection means is provided for each section, and the smoke exhaust facility is
It is characterized in that smoke is discharged in the compartment corresponding to the water spray detection means that outputs the water spray detection signal.

Next, in the invention described in claim 4, in contrast to the structure described in claim 1 or 2, the space to be disaster-prevented is divided into a plurality of compartments, and a smoke detector is provided for each compartment. Along with the provision, the water sprinkling detection means detects the presence or absence of water sprinkling from any of the sprinkler heads arranged in the plurality of sections, and the smoke exhaust facility detects the water sprinkling detection signal and smoke detection from the smoke sensor. When both of the signals are input, the smoke detector outputs the smoke detection signal to discharge smoke in the compartment in which the smoke detector is arranged.

Next, the invention described in claim 5 is, in addition to the structure described in any one of claims 1 to 4, provided with a fire suppression determination means for determining whether or not a fire has been extinguished. The sprinkler equipment is characterized by stopping the watering from the sprinkler head based on the fire suppression signal from the fire suppression determination means. Next, in the invention described in claim 6, in contrast to the configuration described in claim 5, the sprinkler equipment is provided in a pipe line for supplying water to the sprinkler head, and a pipe is supplied when a fire suppression signal is input from the fire suppression determination means. It is characterized by having a valve for closing the passage.

Next, in the invention described in claim 7, in contrast to the structure described in claim 5 or 6, the extinguishing determination means includes a smoke concentration determination device, and the smoke concentration determination device detects the smoke concentration determination device. It is characterized in that whether or not the fire is extinguished is determined based on the smoke density. Next, the invention described in claim 8 is different from the configuration described in claim 5 or 6 in that
The extinguishing determination means includes a plurality of temperature sensors, and determines whether or not a fire is extinguished based on a temperature difference between the temperature of the fire occurrence area and the temperature of the non-fire area.

Next, the invention described in claim 9 is different from the structure described in claim 5 or 6 in that the smoke exhaust facility has an openable smoke exhaust port for exhausting smoke and the smoke exhaust. A smoke exhaust duct communicating with the mouth is provided, and the fire extinguishing determination means determines whether or not a fire extinguishing state is established based on a temperature in the smoke exhaust duct. Here, the smoke exhaust by the smoke exhaust facility is performed by opening the smoke exhaust port. When the smoke exhaust duct communicates with the smoke exhaust port, the smoke exhaust machine (fan or the like) operates in conjunction with the opening.

As the above-mentioned section, one smoke exhaust section or a plurality of smoke exhaust section groups can be exemplified. The non-fire area is, for example, a room where it is determined that no fire has occurred. According to the present invention, the smoke exhaust equipment operates automatically in the event of a fire, and the smoke exhaust equipment operates in conjunction with the sprinkler equipment with almost no malfunction as compared with the smoke detector. improves.

Further, since the smoke is discharged together with the water spray, the smoke and the smoke containing water vapor due to the water spray can be surely discharged. Further, the sprinkler sprinkling water lowers the smoke temperature, and the smoke can be discharged for a long time. Further, when the fire is extinguished, it is possible to automatically stop sprinkler watering and prevent water damage.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram on a predetermined floor for explaining the disaster prevention equipment of the present embodiment, in which a disaster prevention space is divided into a plurality of smoke exhaust sections A, B, and C. There is.

A sprinkler head 2, a smoke detector 3, and a smoke exhaust port 4 of the smoke exhaust facility are arranged in each of the smoke exhaust sections A, B, and C. Water can be supplied to each sprinkler head 2 through a pipe 6. The pipe 6 is connected to each smoke exhaust section A from the main pipe 6a,
Branch pipes 6b and 6c are branched for each of B and C, and each branch pipe 6b and 6c
The sprinkler heads 2 arranged in the smoke exhaust sections A, B and C corresponding to 6c are connected. Reference numeral 7 indicates a pump for pumping water to the pipe 6.

A flow water detecting device 8 and an electromagnetic valve 9 are individually provided in the branch pipes 6b and 6c arranged corresponding to the smoke exhaust sections A, B and C, respectively. When the flowing water detection devices 8 arranged in the smoke exhaust sections A, B, and C detect a flow of water having a predetermined flow velocity or more, the sprinkle detection signals are arranged in the corresponding smoke exhaust sections A, B, and C. The smoke exhaust port 4 can be supplied to the smoke exhaust port actuating actuator 10 thus operated. The smoke outlet operating actuator 10 operates when a detection signal is input, and operates to open the connected smoke outlet 4.

Each smoke outlet 4 can be opened and closed by operating the smoke outlet operating actuator 10, and each smoke outlet 4 is connected to a smoke exhaust duct 11.
A temperature sensor 12 is arranged in each branch pipe portion of the smoke exhaust duct 11 near each smoke exhaust port 4. Each temperature sensor 12
Outputs the detected temperature signal to the fire extinguishing determination unit 13 that constitutes the fire extinguishing determination means.

Based on the temperature signal from each temperature sensor 12, each extinguishing determination section 13 is a smoke exhaust duct 11 near the smoke exhaust port 4.
When it is determined that the inside temperature is equal to or higher than the first temperature, the determination of the fire extinguishing state is started, and when it is determined that the temperature in the corresponding smoke exhaust duct 11 is equal to or lower than the second temperature, the corresponding smoke emission section A , B, C corresponding to the electromagnetic valves 9 are supplied with a closing command.

For example, the first temperature is a temperature at which a fire occurrence state can be detected, such as 70 ° C., and the second temperature is 30.
It is the temperature at which it can be judged that the fire has been extinguished. The second temperature may be determined based on the temperature difference between the outside temperature and the temperature of the non-fire room. Here, the presence / absence of the fire occurrence state is not limited to the above determination, and for example, the fire occurrence state may be determined when a predetermined time elapses after the corresponding smoke exhaust port 4 is opened.

Further, each electromagnetic valve 9 closes the valve when a closing command is input to shut off the supply of water to the sprinkler head 2 in the corresponding section. Here, the electromagnetic valve 9
Is open in the initial state. Further, even if it is once closed, it can be returned to the open state (initial state) by a signal from the control room. Although not shown, a separate valve that can be manually operated is provided in the main pipe 6a.

Here, the smoke detector 3 can supply a smoke detection signal to a management room (not shown). Further, each smoke outlet operating actuator 10 can be operated by a signal from the control room. That is, the smoke exhaust facility can be remotely controlled as in the conventional case. Next, the operation and effects of the disaster prevention equipment will be described.

For example, when a fire occurs in the smoke exhaust section A,
Due to the occurrence of the fire, water is sprinkled from the sprinkler head 2a arranged in the smoke exhaust section. In this sprinkling state, since a flow of water is generated in the branch pipe 6b corresponding to the smoke exhaust section A, this flow of water is detected by the water flow detection device 8a, and the sprinkle detection signal corresponds to the smoke exhaust section A. It is supplied to the smoke outlet operating actuator 10a provided at. As a result, the corresponding smoke exhaust port 4a is opened. As a result, even if remote control is not performed from the management room, smoke is reliably discharged in the smoke exhaust section A in which a fire has occurred.

At this time, since the smoke is cooled by sprinkling water from the sprinkler head 2a, the specifications of the smoke exhaust equipment such as the smoke exhaust duct 11 and the smoke exhaust machine (fan etc.) are not always the same as those of general smoke exhaust equipment. The specifications do not have to have high heat insulation. That is, the fireproof performance specifications of the smoke exhaust duct 11 and the like can be reduced. Further, since the smoke exhaust temperature decreases, the damper closing temperature of the smoke exhaust duct 11 or lower (eg, 280 ° C. or lower)
It is possible to exhaust smoke for a long time. This is
It is also possible to use the forced smoke exhaust part of the smoke exhaust facility as a general air conditioner or ventilation facility.

When the extinguishing determination section 13a detects that the temperature inside the smoke exhaust duct 11 through which smoke passes exceeds the first temperature, the extinguishing determination section 13a determines whether or not the fire is in the extinguished state. When the processing is started and thereafter, it is determined that the temperature passing through the smoke exhaust duct 11 becomes equal to or lower than the second temperature due to the extinguishing of the fire, it is determined that the fire is extinguished, and the closing command is supplied to the corresponding electromagnetic valve 9a. To do. The electromagnetic valve 9a, to which the closing command is supplied, is closed and the supply of water to the corresponding sprinkler head 2 is cut off to stop watering.

As a result, unnecessary water sprinkling can be avoided and water damage damage can be reduced. As described above, even if the smoke exhaust port 4 is not manually opened and the sprinkler head is not used to stop water sprinkling, smoke can be reliably discharged and water sprinkler water can be stopped after the fire is extinguished.

Here, a command to close the electromagnetic valve 9 can also be issued from the control room. Further, in the above embodiment, the smoke exhaust duct 1
Although it is determined whether or not the fire is in a fire extinguishing state based on the temperature inside 1, the invention is not limited to this. The flame sensor may be used to determine the fire status in the target compartment to determine whether or not the fire is in a fire extinguishing state. Alternatively, a smoke concentration sensor (smoke concentration determination device) is installed in each compartment to measure the smoke concentration in the compartment where water is sprinkled from the sprinkler head 2, and the smoke concentration is below a predetermined value (for example, 10% or less). Whether or not it is in a fire extinguishing state in the compartment may be determined by whether or not it is.

In the above embodiment, the water supply is shut off by closing the electromagnetic valve 9, but the invention is not limited to this. For example, in response to a signal, the water spray may be stopped by stopping the operation of the pump 7 that pumps water to the pipe 6 or by reducing the pressure. Further, in the above-described embodiment, the control such as opening and closing of the smoke exhaust port 4 is performed for each section, but the configuration is not limited to this. You may comprise so that the said control may be performed for every several division unit. Further, as in the second embodiment described later, a centralized configuration may be adopted so that the main controller 20 performs all the controls.

Although each floor is described as being divided into a plurality of smoke exhaust sections A, B and C, the same applies when the disaster prevention area is composed of a single smoke exhaust section. . Further, in the above embodiment, the water flow detection device 8 constitutes the water spray detection means, but a means for detecting the occurrence of fire such as a heat sensor may be used as the water spray detection means. However, when the water flow detection device 8 is used, it is possible to surely perform smoke emission in conjunction with water sprinkling.

When a fire is detected after the sprinkler has stopped sprinkling and the corresponding sprinkler head 2 is in a sprinkling state, an opening command can be supplied to the electromagnetic valve 9 to open the electromagnetic valve 9 and start sprinkling again. It is good to leave it. Further, in the above description, only the opening process of the smoke exhaust port 4 by the smoke exhaust port operating actuator 10 is described, but it is assumed that the smoke exhauster operates in conjunction with it.

Next, a second embodiment will be described with reference to the drawings. The configurations of the sprinkler equipment and the smoke exhaust equipment of this embodiment are the same as those of the first embodiment, as shown in FIG. However, the water flow detection device 8 and the electromagnetic valve 9 provided in the sprinkler equipment are provided in the main pipe 6a that supplies water to each of the plurality of smoke exhaust sections A, B, and C, and the water flow detection device 8 mainly outputs the detection signal. The solenoid valve 9 can be supplied to the controller 20, and the opening / closing of the electromagnetic valve 9 is controlled by a command from the main controller 20.

Signals from the smoke sensor 3 and the temperature sensor 12 are also supplied to the main controller 20, and the opening and closing of each smoke outlet operating actuator 10 is controlled by a command from the main controller 20. Reference numeral 30 represents a display device and an operation panel provided in the control room, and reports a fire situation,
And remote control is possible.

When the smoke detection signal is input from the smoke detector 3, the main controller 20 outputs a signal to that effect to the display device. Similarly, when a detection signal is input from the water flow detection device 8, a signal to that effect is output to the display panel. In addition, when the smoke emission control unit 20A of the main controller 20 receives the detection signal from the water flow detection device 8, it determines that a fire has occurred, that is, smoke emission is required in any of the corresponding plurality of compartments, and in this state any smoke is emitted. When a smoke detection signal is input from the detector 3, the smoke detector 3
Actuator 1 for operating the smoke exhaust port of the compartment where the
Supply an open command to 0. Here, even if a detection signal is input from the smoke detector 3 in a state where there is no detection signal from the water flow detection device 8, it is ignored as an erroneous signal. However, a smoke detection signal is supplied to the display board.

As a result, malfunction of smoke exhaust due to misdetection of the smoke sensor 3 is prevented, and smoke can be reliably discharged only during a fire. In addition, the fire extinguishing determination unit 20B of the main controller 20 uses the temperature sensor 1 near the opened smoke exhaust port 4.
Based on the signal from 2, the temperature inside the smoke exhaust duct 11 becomes the first
When it is determined that the temperature has exceeded the temperature, the fire extinguishing state determination processing is started, and when it is determined that the temperature in the corresponding smoke exhaust duct 11 becomes equal to or lower than the second temperature, the fire extinguishing state is determined and the electromagnetic valve 9 is notified. Supply a close command to shut off the water supply.

For example, when water is sprinkled from the sprinkler head 2 in two compartments, a closing command is supplied to the electromagnetic valve 9 only when both of the two compartments are determined to be in a fire extinguishing state. It As a result, unnecessary sprinkling can be prevented and water loss can be suppressed. Other configurations, operations, and effects are the same as those in the first embodiment.

[0036]

As described above, according to the present invention,
Since the smoke exhaust works in conjunction with the extinguishing of fire by the sprinkler equipment, the operation reliability of the smoke exhaust equipment is improved, the evacuation safety is increased, and fire fighting activities are facilitated. In addition, smoke containing water vapor from the sprinkler can be reliably discharged.

Furthermore, since the fire is suppressed by the sprinkler, the temperature of the smoke to be discharged becomes low, so that it is possible to lower the fire resistance specifications of general smoke exhaust equipment. Since the fire is suppressed by the sprinkler, the temperature of the smoke to be discharged is longer than the temperature at which the damper is closed, and the smoke exhaust facility can be operated for a long time. Particularly, in the invention according to claim 4, as compared with the case where the smoke exhaust port operates in conjunction with the smoke detector, the operation of the smoke exhaust equipment due to the malfunction of the smoke sensor can be prevented. Further, according to the invention of any one of claims 5 to 9, it is possible to prevent water loss.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a disaster prevention facility according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a disaster prevention facility according to a second embodiment of the present invention.

[Explanation of symbols]

Section A, B, C 2 Sprinkler equipment 3 smoke detector 4 smoke outlet 6 piping 6a Main pipe 6b, 6c Branch pipe 7 pumps 8 Water flow detector 9 Electromagnetic bubble 10 Actuator for smoke outlet operation 11 Smoke exhaust duct 12 Temperature sensor 13 Fire suppression section 20 Main controller 20A smoke control section 20B Fire extinguisher determination unit

   ─────────────────────────────────────────────────── ─── Continued front page    (71) Applicant 000003403             Hochiki Co., Ltd.             2-1043 Kamiosaki, Shinagawa-ku, Tokyo (71) Applicant 000233826             Nomi Disaster Prevention Co., Ltd.             4-7-3 Kudan-Minami, Chiyoda-ku, Tokyo (71) Applicant 501381413             Independent Administrative Institution Fire Research Institute             3-14-1, Nakahara, Mitaka City, Tokyo (72) Inventor Isao Kasahara             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. (72) Inventor Yuka Michikoshi             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. (72) Inventor Yoshiro Yashiro             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Hidefumi Kakegawa             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Hiroomi Sato             Kashima-ken, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo             Inside the corporation (72) Inventor Hitoshi Kurioka             Kashima-ken, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo             Inside the corporation (72) Inventor Masamichi Kikuchi             2-1043 Kamiosaki, Shinagawa-ku, Tokyo Ho             Chiki Co., Ltd. (72) Inventor Toshihide Tsuji             2-1043 Kamiosaki, Shinagawa-ku, Tokyo Ho             Chiki Co., Ltd. (72) Inventor Hiroshi Ishida             2-1043 Kamiosaki, Shinagawa-ku, Tokyo Ho             Chiki Co., Ltd. (72) Inventor Takashi Asami             No. 4, 7-3, Kudan-minami, Chiyoda-ku, Tokyo             Beauty Disaster Prevention Co., Ltd. (72) Inventor Masamitsu Ohashi             No. 4, 7-3, Kudan-minami, Chiyoda-ku, Tokyo             Beauty Disaster Prevention Co., Ltd. (72) Inventor Toshio Kan             No. 4, 7-3, Kudan-minami, Chiyoda-ku, Tokyo             Beauty Disaster Prevention Co., Ltd. (72) Inventor Nao Saito             3-14-1, Nakahara, Mitaka City, Tokyo Independent line             Inside the Fire Research Institute (72) Inventor Shun Tsuruta             3-14-1, Nakahara, Mitaka City, Tokyo Independent line             Inside the Fire Research Institute F-term (reference) 2E189 CA07 CA09 CE07 CH03 GA01                       GB05 GB06

Claims (9)

[Claims] 1. A disaster prevention facility comprising a sprinkler facility and a smoke exhaust facility, wherein a sprinkler detecting means for detecting sprinkler water from a sprinkler head is provided, and the smoke exhaust facility discharges water based on a sprinkler detection signal from the sprinkler detecting means. Disaster prevention facility characterized by smoking. 2. The disaster prevention equipment according to claim 1, wherein the sprinkler detection means is a running water detection device provided in a pipeline for supplying water to the sprinkler head. 3. The disaster prevention target space is divided into a plurality of sections,
An independent sprinkling detection means is provided for each section, and the smoke exhaust facility is
The smoke prevention equipment according to claim 1 or 2, wherein smoke is discharged from the compartment corresponding to the water spray detection means that outputs the water spray detection signal. 4. A space for disaster prevention is divided into a plurality of sections, a smoke detector is provided for each section, and the sprinkler detecting means is provided from any one of the sprinkler heads arranged in the plurality of sections. The presence or absence of water sprinkling is detected, and the smoke exhaust facility outputs the smoke detection signal and receives the smoke detection signal from the smoke sensor. The disaster prevention equipment according to claim 1 or 2, which smokes. 5. A fire extinguishing determination means for determining whether or not the fire is in a fire extinguishing state is provided, and the sprinkler equipment stops watering from a sprinkler head based on a fire extinguishing signal from the fire extinguishing determination means. 1 to claim 4
Disaster prevention equipment described in any one of 1. 6. The sprinkler equipment comprises a valve provided in a pipeline for supplying water to the sprinkler head and closing the pipeline when a fire suppression signal is input from the fire suppression determination means. Disaster prevention equipment. 7. The extinction judging means comprises a smoke density judging device, and judges whether or not a fire extinguishing state is present based on the smoke density detected by the smoke density judging device.
Alternatively, the disaster prevention equipment according to claim 6. 8. The fire extinguishing determination means includes a plurality of temperature sensors, and determines whether or not the fire is extinguished based on a temperature difference between the temperature of the fire occurrence area and the temperature of the non-fire area. Disaster prevention equipment according to claim 5 or claim 6. 9. The smoke exhaust facility includes a smoke exhaust port that can be opened and closed for exhausting smoke, and a smoke exhaust duct communicating with the smoke exhaust port, and the extinguishing determination means is configured to control the temperature in the smoke exhaust duct. 6. It is determined whether or not the fire is in a fire extinguishing state based on
Alternatively, the disaster prevention equipment according to claim 6.