JPH06277309A - Fire spreading preventive device for building - Google Patents

Abstract

PURPOSE:To provide a building fire spreading preventive device by which a building is not damaged and early fire extinguishing can be surely carried out in an unmanned state. CONSTITUTION:This device is constituted of fire detecting means 1a, 1b installed outside of a building A for detecting a fire, water discharging devices 2A, 2B which swing and discharge water upward from upper parts of the building A, and a pressure-feed control means 60 for pressure-feeding water of specified pressure to the water discharging devices 2A, 2B based on detection results of the fire detecting means 1a, 1b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire spread prevention device for buildings, and more particularly to a fire spread prevention device for old buildings to be preserved as a cultural property.

[0002]

2. Description of the Related Art In recent years, buildings such as old houses with thatched roofs have been recognized as cultural assets and have been preserved as they are. This preserved building that is recognized and preserved as a cultural property is generally preserved unoccupied with no residents, and its structure is vulnerable to fire. Especially, in the case of a thatched roof, There is a risk that the fire will easily spread the fire. Therefore, it is necessary to pay sufficient attention not only to the burning due to the fire caused by the ignition from the inside of the preserved building, but also to the fire spreading from the outside of the preserved building such as the spread of fire caused by the flying fire from the adjacent fire. is there.

For this reason, a fire-fighting facility or the like is provided inside the preserved building, and a thatched roof of the preserved building is provided with a water discharge device such as a drainer in order to prevent the spread of fire from the outside. Alternatively, in the case of preserved buildings in urban areas, firefighting equipment, such as outdoor fire hydrants, is provided so as to meet modern fire protection standards.

[0004]

However, if the water discharge device such as the above-mentioned drainer and the water pipe for supplying water to the water discharge device are directly provided in the preserved building, the structure of the preserved building must be modified. Since this has to be done, there is a problem in that the significance of preserving the building in its original state is impaired and the appearance of the preserved building is impaired. For this reason, it is possible to install a water discharge device etc. without modifying the structure of the preserved building as much as possible, but since this requires construction with high technology, there is a problem that the construction cost will increase. there were. In order to prevent the appearance of the preserved building from being impaired, it may be possible to reduce the size of the water discharge device such as a drain to make it inconspicuous, or to bury it in the roof. There was a problem that things like it became complicated.

On the other hand, an outdoor fire hydrant was installed around the preserved building.
Extinguish by discharging water from the water discharge nozzle of this outdoor fire hydrant.
In case of fire (including fire spread prevention), water discharge nozzle
The water discharge pressure is considerably higher and the water discharge nozzle is also
Because the fire extinguishing water is discharged in a stick shape, this fire extinguishing water is saved.
If you hit thatched roof or earthen wall of a building, they will be destroyed.
There was a problem that there is a risk that it will be. Also, the outdoor
According to the Fire Service Law, hydrants discharge water of 350 liters per minute or less.
Above, the water discharge pressure is 2.5kgf / cm at the front end of the water discharge nozzle. ²that's all
It is specified that the water is discharged from this water discharge nozzle.
Therefore, when people are extinguishing fire, this water discharge nozzle
It requires considerable force to hold and therefore extinguishes outdoors
If you are not experienced in fire extinguishing drills, do enough fire extinguishing work.
There was also a problem that it was difficult to do. Furthermore,
Always fire for timely fire extinguishing with an outdoor fire hydrant
Formerly responsible person (person who performs fire fighting) must be assigned
There was also the problem of not having it.

Further, as described above, since the preserved building is not generally used as a residence, it is often unmanned at night. For this reason, mechanical security is often implemented, but there was also a request to link this mechanical security device with the fire protection system.

The present invention has been made in view of the above points, and it is possible to surely carry out initial fire extinguishing in an unmanned state without damaging a building, and to improve workability of installation work. An object of the present invention is to provide a fire spread prevention device for a building that can be designed.

[0008]

The invention according to claim 1 is
The fire detection means is provided outside the building to detect a fire, and has a nozzle section for discharging water upward from an upper portion of the building, and a water discharge curtain is formed to cover the building with water discharged from the nozzle section. As described above, the water discharging means for rocking the nozzle portion and the pressure feeding control means for feeding water of a predetermined pressure to the water discharging means on the basis of the detection result of the fire detecting means are characterized.

According to a second aspect of the present invention, in the first aspect of the present invention, there is further provided voice message sounding means for generating a water discharge advance notice voice message based on the detection result of the fire detecting means, and the pumping control means is for the fire. It is characterized in that the water is pumped with a delay of at least the sounding time of the voice message from the detection by the detection means.

[0010]

According to the first aspect of the present invention, when a detection signal is sent to the control means by the fire detection means arranged around the building, the pressure feed means is controlled by the pressure feed control means based on the detection signal. Is activated, and fire extinguishing water having a predetermined pressure is pumped to the water discharging means. Then, water is sprayed upward from the upper part of the building by the nozzle part of the water discharging device, and the nozzle part oscillates at a predetermined angle to form a water curtain covering the building.

Therefore, it is possible to reliably carry out fire extinguishing activities in a timely manner even in an unmanned state, and to prevent damage to the building due to water being discharged from the water discharging device.

According to the second aspect of the present invention, after the fire is detected, the voice message generating means notifies the occurrence of the fire for a predetermined time and the activation of the pressure feeding means is delayed. Therefore, the person inside or around the building can be quickly evacuated.

Therefore, it is possible to evacuate the person inside or around the building before the water discharge by the water discharge device is started.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a fire spread prevention device according to the present embodiment. As shown in FIG. 1, the fire spread prevention device for a building according to the present embodiment includes two fire detection means 1a and 1b.
Two water discharge means 2a, 2b, a pressure feeding means 3, and a control unit 4
It has and.

The two fire detecting means 1a and 1b are installed at predetermined intervals on the outer peripheral portion of the building A so that the partial area and the other area of the entire building A become the detection areas. . Therefore, the fire of the building A can be detected in the entire area of the building A by these fire detecting means 1a and 1b.

The fire detection means 1a (1b) is peculiar to flames.
Flame detection devices 1a for detecting ultraviolet rays₁, 1a
₂(1b₁, 1b₂) And these flame detection devices 1a₁, 1
a₂, (1b₁, 1b₂) Is connected to the input side
In both cases, AND times in which the output side is connected to the control unit 4
It is composed of the path 11a (11b). Two flame inspections
Knowledge means 1a₁And 1a₂(1b₁And 1b₂) Is the prescribed
These flame detectors are installed apart from each other.
1a₁And 1a₂(1b₁And 1b₂) Each has a fire inspection
It is peculiar to the flame in the area corresponding to the detection area of the intelligence means 1a (1b).
It is designed to detect the ultraviolet rays of
When detected, the AND circuit 11a (11b) outputs a predetermined
It is configured to send a detection signal. AND circuit 11
a (11b) is the flame detection device 1a₁(1b₁) From
Intelligent signal and flame detection device 1a₂(1b₂) Detection signal from
Only when both are input, the control unit 4 and the voice message described above are input.
Of the voice message generation unit 5 corresponding to the message generation means.
A detection signal is sent to each of them. Fire
Two flame detection devices 1a for the detection means 1₁, 1a₂(1
b₁, 1b₂) Are provided, and these flame detection devices 1a₁, 1a
₂(1b₁, 1b₂) Is separated by a predetermined distance, and A
These flame detection devices 1a are provided in the ND circuit 11a (11b). ₁
And 1a₂(1b₁And 1b₂) Detection signal from
Fire detection means 1a (1b) controls only when input
The detection signal is sent to the part 4 at a certain place.
UV rays of sunlight in the flame detection device 1a₁And 1a
₂(1b₁And 1b ₂) Detects the ultraviolet rays peculiar to the flame and near
If similar, flame detection device 1a₁And 1a₂(1b
₁And 1b₂) One detects the ultraviolet rays of this sunlight
Even if it malfunctions, the fire detection means 1a (1b) malfunctions.
This is to avoid making it.

The voice message generating section 5 is triggered by the input of a detection signal from the fire detecting means 1a and / or the fire detecting means 1b, and is registered in advance by a control signal from the control section 4, for example, a voice message registered in advance. A voice message such as "From now on, the water will start to be extinguished because the fire will be extinguished, so please evacuate immediately."
It is designed to repeat itself. The voice message generating unit 5 is installed around the building A, and a person or the building A who is in the building A by amplifying the voice message is also installed.
A speaker 50 for notifying the people around the building, and similarly installed around the building A, and for visually notifying that an abnormality has occurred by operating by a control signal from the control unit 4. The red rotating lamp 51 of is connected.

The pressure feeding means 3 comprises, for example, a pump,
The suction example of the pump 3 is connected to a water source (not shown), while the discharge side is connected to the water discharger 2A via the pipe 31, the solenoid valve 8A and the pipe 3A in this order,
The pipe 31, the solenoid valve 8B, and the pipe 3B are connected in this order to the water discharger 2B. The pump 3 is adapted to be started / stopped in response to a control signal from the control unit 4, and at the time of starting, it is designed to send fire extinguishing water from a water source to a water discharger 2A, 2B at a predetermined pressure.

The solenoid valves 8A and 8B are configured to open and close by a control signal from the control unit 4, respectively, but in a normal state (when the fire extinguishing work by the water discharge device is not performed).
Is closed.

The water discharging means 2A and 2B are installed around the building A so that water can be discharged to the areas corresponding to the detection area of the fire detecting means 1a and the detection area of the fire detecting means 1b, respectively. In addition, the water discharge means 2A (2B) is shown in FIG.
As shown in (a), it is composed of a nozzle portion 23, a swing plate 232, and a rotation switching device 233, and a box lid 22 is fixed to the upper portion of the nozzle portion 23. Then, when the water discharging means 2A (2B) is normal (when water is not discharged by the water discharging means), as shown in the figure, the bottom portion is a pipe (3A).
A box lid 22 is built in contact with a cover 21 that is connected to 3B and has an upper portion slightly protruding from the ground level. On the other hand, the water discharging means 2A (2B) rises upward together with the box lid 22 (in the direction indicated by an arrow C in the figure) by the water pressure from the pump 3 as shown in FIG. 2 (b) when the water is discharged by the water discharging means. 23 is located above the cover 21.

As shown in FIG. 3, the nozzle part 23 is arranged above the upper part of the building A so as to discharge water upward from the upper part of the building A from the nozzle part so as to form a water curtain covering the building. Is directed to. The swing plate 232 and the rotation switching device 233 have a mechanism for swinging the nozzle portion 23 at a predetermined swing angle β as shown in FIG. 4 when a predetermined water discharge pressure is applied. Therefore, as shown in FIG. 5, water is sprayed by a part of the building A corresponding to the detection area of the fire detection means 1a by the water discharge by the water discharge means 2A, and a water discharge curtain is formed in the partial area. By the water discharge by the water discharge means 2B, water is sprayed on the other area of the building A corresponding to the detection area of the fire detection means 1b, and a water discharge curtain is formed on the other area.

In the building A, for example, three fire detectors 9 for detecting a fire or the like in the building, a fire alarm device 7a, and an indoor fire hydrant 7b are installed.
When the fire detector 9 detects a fire or the like, a detection signal from the fire detector 9 is sent to the control unit 4 via the fire alarm device 7a. Also indoor fire hydrant 7
b is a pipe 7b ₂ provided with a pressure reducing valve 7b _{1 in the} middle.
It is connected to a pipe 31 that connects the discharge port of the pump 3 and each solenoid valve via. Therefore, at the time of extinguishing with the indoor fire hydrant 7b, the fire extinguishing water from the pump 3 is reduced to a predetermined pressure by the pressure reducing valve 7b ₂ and supplied to the indoor fire hydrant. In this way, the pressure of the fire extinguishing water supplied to the indoor fire hydrant 7b ₂ is reduced to a predetermined pressure by the pressure reducing valve 7b _{2 because} the set water discharge pressure of the water discharge devices 2A and 2B is set to the indoor fire hydrant 7b.
This is because the discharge pressure of the pump 3 is set so as to correspond to the set discharge pressures of the water discharge devices 2A and 2B because the discharge pressure is higher than the set discharge pressure of b.

The control unit 4 is turned on when the fire extinguishing activity is performed by using the water discharge devices 2A and 2B installed outdoors of the building A and the indoor fire hydrant 7b installed indoors of the building A. The combination switch button 41 that is put in the state and the ON state when the fire extinguishing activity is completed without fear of the building A burning and burning and the pump 3 and the solenoid valves 8A and 8B are returned to the state before the fire extinguishing activity. Reset button 42,
Electronic control unit 60 comprising, for example, a microcomputer
It is composed of

The microcomputer 60 is a control device diagram for realizing the above-mentioned pressure feeding control means by software processing, and as shown in FIG. 1, a central processing unit (CPU).
Reference numeral 61, an input / output unit (I / O unit) 62, a timer 63, a read only memory (ROM) (not shown), a random access memory (RAM), etc., which are connected via a bus line 64 (not shown) It has a hardware configuration of.

The I / O unit 62 has a fire detecting means 1
The detection signals from a and 1b and the detection signal from the fire alarm device 7a are input, and these signals are supplied to an A / D converter (not shown) for analog / digital conversion and then sent to the bus line 64. The input signal is sent to the pump 3, the solenoid valves 8A and 8B, the voice generation message section 5 and the red rotary lamp 51 to control them.

The timer 63 is the fire detecting means 1a, 1b.
When a detection signal from the I / O unit 62 is input to the I / O unit 62, the detection signal is actuated as a trigger, and the pump 3 is operated for the same time as the time until the voice message of the voice message generation unit 4 is completed. It has a function of delaying the control signal.

C of the microcomputer 60 having the above structure
The PU 61 executes the processing of the flowchart described below according to the program stored in the ROM (not shown). FIG. 6 is a flow chart for explaining the operation of the embodiment of the main part of the present invention.

In the figure, first, at step 102, it is judged whether or not a fire has been detected, that is, whether or not signals from the fire detecting means 1a, 1b and the fire alarm device 7a have been input. If no fire has been detected, The process of step 102 is looped, and when a fire is detected, it is determined whether or not the fire is detected outdoors (step 104).

When it is determined in step 104 that the fire is detected outdoors, a voice message is generated from the voice message generator 5, the rotating red light 51 is activated, and the timer 63 is activated (step 106). ),
The solenoid valve corresponding to the unused water discharging device (water discharging device for discharging water to the area corresponding to the detection area of the fire detecting means that does not send the detection signal) is closed (step 10).
8).

Next, it is determined whether or not the timer 63 has timed out (step 110). If it is determined that the time has not expired, the process of step 110 loops until the time is up. And step 11
When it is determined that the time is up at 0, the pump 3 is started (step 112). As a result, the fire extinguishing water is pumped at a predetermined pressure only to the water discharger used by the pump 3, and the fire fighting activity is started by the water discharger.

Then, in step 114, it is determined whether or not the reset button 42 has been turned on. When it is determined that the reset button 42 has not been turned on, the processing of step 114 loops, while the reset button 42 is turned on. When it is determined that the switch is ON, that is, when the fire extinguishing activity eliminates the risk of the building A burning and burning, and the fire extinguishing activity ends and the reset button 42 is pressed, the pump 3 is stopped. , A return operation such as opening the solenoid valve closed in step 108 is performed (step 11
6) Then, loop to step 102.

On the other hand, when it is judged in step 104 that the fire is not detected outdoors, that is, when the fire detector 9 detects a fire and this detection signal is sent out through the fire alarm device 7a, the water discharge device 2A. And solenoid valves 8A and 8B corresponding to 2B and 2B respectively are closed (step 13
0) and then start pump 3 (step 13
2). Therefore, in this case, the fire extinguishing water is not pumped from the pump 3 to the water dischargers 2A and 2B, but the fire extinguishing water depressurized to a predetermined pressure by the pressure reducing valve 7b ₂ is pumped to the indoor fire hydrant 7b only. It will be.

Next, at step 134, the combined switch is turned on.
When it is determined that the combination switch is not turned on, it is determined whether or not there is a fire detection from the outside (step 136). Even if it is determined in step 104 that there is no fire detection from the outside, it is determined whether or not there is a fire detection from the outside in step 136 when the degree of the subsequent fire is large. This is because the fire may be detected from outside.

When it is determined in step 136 that a fire is detected from the outside, the process of step 138 is executed. Since the process of step 138 is the same as the process of step 106 already described, the process content Will not be described.

Next, at step 140, it is judged if the time is up, and if it is judged that the time is not up, the processing of step 140 loops until the time is up. When it is determined in step 140 that the time is up, all the solenoid valves (in this embodiment, solenoid valves 8A and 8B) are opened (step 1
42), start extinguishing the fire from the water discharge devices 2A and 2B.

In step 142, all the solenoid valves are opened so that when the fire detection means 1a and 1b detect a fire due to a fire in the building A, the degree of fire is considerably large. Water discharge device 2
This is because it is necessary to discharge water from both A and 2B.

Thereafter, in step 144, it is judged whether or not the reset button is turned on. If the reset button 42 is not turned on, the process loops to step 134, while the reset button 42 is turned off in step 144.
If it is determined to be N, the process proceeds to step 116, and then the process loops to step 102.

When it is determined in step 136 that there is no fire detection from outside, that is, the water discharger 2A,
When it is not necessary to discharge water from 2B, the process is step 1
Proceeding to 44, the processing of step 144 described above is executed.

On the other hand, in step 134, the combined switch is turned off.
When it is determined that the number is N, steps 162 to
The process of step 166 is sequentially executed, but the processes of these steps 162, 164, and 166 are the same as the processes of steps 138, 140, 142 described above, respectively, and therefore description thereof will be omitted. After the processing of step 166 is completed, the reset button 42 is turned on in step 168.
It is determined whether or not the reset button 42 is turned on.
If it is determined that the reset button has not been turned on, the process of step 168 is looped. On the other hand, if it is determined that the reset button is turned on, the process of step 116 described above is executed, and then step 102 is performed. Loop.

According to the above-mentioned embodiment, since it is not necessary to directly install the building fire spread prevention device on the building A, the building A is preserved in the state at the time of construction and the exterior of the building A is kept. It is possible to very effectively prevent the spread of fire.

Since the fire spread prevention device for the building is automatically activated by the control unit 4, it is possible to continuously monitor the fire for 24 hours even if it is unattended, and to extinguish the fire manually. Firefighting can be carried out without causing problems of skill, which is a problem in the case of activity.

Furthermore, since it is not necessary to directly install the building fire spreader on the building A, the building can be installed at low cost.

Furthermore, since the nozzle portion 23 of the water discharger discharges water upward from the upper part of the building A, it also swings to form a water curtain covering the building A.
It is very unlikely that the building A will be physically destroyed by the water pressure of the water discharge like a conventional outdoor fire hydrant.

Further, the water discharge devices 2A and 2B are driven only by the water pressure of the fire extinguishing water pumped from the pump. Therefore, since the water discharge devices 2A and 2B do not require electric drive, the water discharge devices 2A and 2B are Since there is no complication, the installation work can be easily performed, and thus the workability can be improved.

Further, even if a fire alarm device or the like is already installed in the building, it can be connected to these existing facilities and can be controlled integrally with the existing facilities. Can prevent fire spread more effectively with existing equipment.

In the above embodiments, the fire detection means is installed.
The number of equipment is not limited to two, but all of the building A
One or more if you can detect a fire in the area
May be Also, the flame detection of the fire detection means 1a (1b)
Knowledge device 1a₁, 1a₂(1b ₁, 1b₂) For fire
The present invention is not limited to the detection of existing ultraviolet rays,
For example, the flame may be detected by the temperature or the like.
Further, the fire detecting means 1a (1b) includes two flame detecting devices.
It is not limited to one that has only one
May be used, and in this case, the AND circuit 11a described above is used.
Since the (11b) is unnecessary, the fire detection means 1a (1
b) is one flame detection device 1a₁(1b₁) Only by
Will be configured.

Further, the water discharger 2A (2B) may be installed so as to be located at a height of about 2 to 3 m above the ground when the nozzle portion 23 is lifted by water pressure as shown in FIG. And in this case, it is possible to prevent water from directly splashing on the side surface of the building whose side surface is the earth wall or shoji, and at the same time the box lid 22 is placed higher than the human back cane. Since it is located, it is possible to ensure human safety when the box lid 22 is momentarily raised by water pressure.

Further, in this embodiment, the fire detecting means 1
It is preferable to provide a remote alarm device 10 for notifying an abnormality to a security company or the like based on a control signal from the control unit 4 when detection signals from a, 1b and the fire alarm device 7a are transmitted. In such a case, an employee of the security company can quickly rush to operate the combination switch 41 and the reset switch 42 in a timely manner, so that fire extinguishing activities can be further performed in response to the fire situation. it can. Further, it is preferable that the remote alarm device 10 also serves as the alarm device of the mechanical security device, and in this case, the mechanical security device and the disaster prevention facility can be interlocked with each other, so that the security system can be further enhanced. You can

It should be noted that the present invention is not limited to application to general buildings, but has a wide space inside a building, such as a factory, and has a large-scale factory and a large-scale space where construction is expected to increase in the future. It may be applied to dome-shaped buildings.

[0050]

According to the first and second aspects of the present invention, it is not necessary to install the structure directly on the building, and since the water curtain is formed so as to cover the building, the building is destroyed. It is possible to prevent the building from spreading fire. Further, when a fire is detected, the initial activation is automatically performed, so that the skill of a person does not pose a problem, and fire extinguishing activities can be surely performed in a timely manner. Furthermore, since it is not necessary to install it directly on a building, construction work with high technology is not performed, and thus workability can be improved.

According to the second aspect of the present invention, after the fire is detected, the occurrence of the fire is notified for a predetermined time, and then the pumping means is activated. Therefore, in addition to the above effects, the inside or the periphery of the building It is possible to quickly evacuate people in the area and prevent them from being involved in dangerous fire fighting activities.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an example of a building fire spreader according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of an example of a water discharger.

FIG. 3 is an explanatory diagram for explaining a water discharge state from a nozzle portion.

FIG. 4 is an explanatory diagram for explaining a swinging state of a nozzle portion.

FIG. 5 is an explanatory diagram for explaining a sprinkling area of the water discharger.

FIG. 6 is a flowchart for explaining the operation of the embodiment of the main part of the present invention.

FIG. 7 is an explanatory diagram illustrating an installation method of another example of the water discharger.

[Explanation of symbols]

1a, 1b Fire detection means 1a ₁ , 1a ₂ , 1b ₁ , 1b ₂ Flame detection device 2A, 2B Water discharge device 3 Pump 4 Control part 5 Voice message generation part 7a Fire alarm device 7b Indoor fire hydrant 8A, 8B Solenoid valve 9 Fire detection Device 23 Nozzle part 41 Combined switch 42 Reset switch 60 Microcomputer (pressure feeding control means) 61 CPU 62 Input / output part 63 Timer A Building

Claims (2)

[Claims] 1. A fire detection means, which is arranged outside a building to detect a fire, has a nozzle section for discharging water upward from an upper portion of the building, and the building is covered by the water discharged from the nozzle section. It is characterized by comprising a water discharge means for rocking the nozzle so as to form a water discharge curtain, and a pressure feeding control means for pressure-feeding water of a predetermined pressure to the water discharge means based on the detection result of the fire detection means. Fire spread prevention device for buildings. 2. A voice message sounding means for generating a water discharge advance warning voice message based on the detection result of the fire detecting means, wherein the pumping control means delays at least the sounding time of the voice message from the detection of the fire detecting means. The fire spread prevention device for a building according to claim 1, wherein the water is pressure-fed.