JP3212741B2 - Fire spread prevention equipment for buildings - Google Patents

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 a building, and more particularly to a fire spread prevention device for an old building to be preserved as a cultural property.

[0002]

2. Description of the Related Art In recent years, buildings such as old houses with a thatched roof have been recognized as valuable cultural assets, and have been preserved as they were built. This architectural property that is recognized and preserved as a cultural property is generally preserved uninhabited without any residents, and its structure is vulnerable to fire, especially in the case of a thatched roof. There is a risk that the fire may easily spread due to a spark from the fire. Therefore, it is necessary to pay due attention not only to fires caused by fires from the inside of the preserved building but also to fires from the outside of the preserved building, for example, fire spread from a neighboring fire. is there.

For this reason, fire fighting equipment and the like are provided inside the preserved building, and a water discharge device such as a drainer is provided on the thatched roof of the preserved building to prevent the fire from spreading and burning from outside. Alternatively, in a preservation building in an urban area, firefighting equipment that satisfies modern firefighting standards, such as an outdoor fire hydrant, is provided.

[0004]

However, if a water discharge device such as the above-mentioned drainer or a water pipe for supplying water to the water discharge device is directly provided on the preservation building, the structure of the preservation building is modified. Because of this, there is a problem that the significance of preserving the building as it was when it was built is impaired and the appearance of the preserved building is impaired. For this reason, it is conceivable to install a water discharge device etc. without changing the structure of the preservation building as much as possible, but this requires high-technical construction and increases the construction cost. there were. In addition, in order to prevent the appearance of the preserved building from being impaired, it is conceivable to reduce the size of the drainage device such as a drainer to make it inconspicuous, or to bury the drainage device in the roof. However, there has been a problem that such methods become complicated.

On the other hand, when an outdoor fire hydrant is provided around a preservation building and fire is extinguished (including the action of preventing fire spread) by discharging water from the water discharge nozzle of the outdoor fire hydrant, the water discharge pressure is considerably higher than that of the water discharge nozzle. At the same time, since fire extinguishing water is discharged from the water discharge nozzle in the form of a rod, there is a problem that when the fire extinguishing water hits a thatched roof or earth wall of a preserved building, it may be destroyed. According to the Fire Service Law, the fire hydrant is specified to have a water discharge rate of 350 liters or more per minute and a water discharge pressure of 2.5 kgf / cm ² or more at the front end of the water discharge nozzle. In the case of fire fighting, a considerable amount of power is required to hold the water discharge nozzle, which makes it difficult for a person who has not undergone fire hydrant fire drill to perform a sufficient fire fighting operation. There was also. Furthermore,
There was also a problem that in order to extinguish the fire with an outdoor fire hydrant in a timely manner, a person in charge of the fire (a person who extinguishes the fire) must always be assigned.

[0006] Also, as described above, the preserved buildings are not generally used as dwellings, and thus are often unmanned at night or the like. For this reason, mechanical security is often implemented, but there has been 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 reliably perform initial fire extinguishing in an unmanned state without damaging a building, and to improve the workability of installation work. It is an object of the present invention to provide a fire spread prevention device for a building.

[0007]

Fire prevention device according to claim 1 building according Means for Solving the Problems] includes a fire detection means for detecting is disposed outside of a building fire, the detection result based on Dzu of the fire detection means
Pumping means for extinguishing a fire or for preventing water spread, and for pumping water of a predetermined pressure to a water discharging means, wherein the water discharging means is arranged around the building and the pumping control means <br>/> has a nozzle unit for water discharge pumping water by the pressure
When a predetermined water discharge pressure is applied from the transmission control means,
Swing the nozzle so that water is sprayed from above the object.
It is characterized by moving .

According to a second aspect of the present invention, there is provided a building according to the first aspect.
In fire prevention device Tsukibutsu, further comprising a Could voice message voicing section water discharge announcement voice messages based on a detection result of the fire detection means, wherein the pumping control means,
The pumping of the water is performed with a delay of a predetermined time from when the fire detecting means detects a fire .

[0009]

According to the first aspect of the present invention, when a detection signal is sent to the control means by the fire detection means provided around the building, the pressure feeding means is controlled by the pressure feeding control means based on the detection signal. Is started, and fire extinguishing water having a predetermined pressure is pumped to the water discharging means. Then, the water is discharged from the nozzle portion of the water discharge device upward from the upper portion of the building, and the nozzle portion swings at a predetermined angle, thereby forming a water discharge curtain covering the building.

Therefore, even in an unmanned state, fire extinguishing activities can be performed in a timely manner, and damage to the building due to water discharge from the water discharge device can be prevented.
In the invention of claim 2, wherein, after the fire detection, a predetermined time fire is notified from the voice message <br/> onset sound means, activation of the pumping means is delayed. Therefore, people in or around the building can be evacuated quickly.

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

[0012]

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 detecting means 1a and 1b,
Two water discharging means 2a, 2b, a pressure feeding means 3, and a control unit 4
And

The two fire detecting means 1a and 1b are installed on the outer periphery of the building A at predetermined intervals so that the partial area and the other area of the entire building A are the detection areas. . Accordingly, the fire of the building A can be detected in the entire area of the building A by the fire detecting means 1a and 1b. Also, the fire detecting means 1a (1
b) shows two flame detecting devices 1 for detecting ultraviolet rays specific to a flame.
a ₁ , 1a ₂ (1b ₁ , 1b ₂ ) and these flame detectors 1a ₁ , 1a ₂ , (1b ₁ , 1b ₂ ) have their input sides connected and their output side connected to the control unit 4. And an AND circuit 11a (11b).
Two flame detection device 1a ₁ and 1a ₂ (1b ₁ and 1
b ₂ ) are set apart from each other by a predetermined distance, and the flame detectors 1 a ₁ and 1 a ₂ ( ₁ b ₁ and ₁ b ₂ )
Can detect flame-specific ultraviolet rays in an area corresponding to the detection area of the fire detecting means 1a (1b). When an ultraviolet ray is detected, the AND circuit 11a
A predetermined detection signal is transmitted to (11b). The AND circuit 11a (11b) includes the flame detector 1a ₁
The detection signal from (1b ₁ ) and the flame detection device 1a ₂ (1
b ₂ detection signal from) is adapted to deliver respectively the detection signal of the voice message generating unit 5 which corresponds to the control unit 4 and the front Kion voice message sound generating means only when it is entered together. The fire detecting means 1 includes two flame detecting devices 1a.
_{1, 1a 2 (1b 1,} 1b 2) of provided, these flame sensing device _{1a 1, 1a 2 (1b 1} , 1b 2) with a is separated a predetermined distance, the AND circuit 11a these flame detection device (11b) 1a ₁ And 1a ₂ (1b ₁ and 1b ₂ ) and fire detection means 1a only when both detection signals are input.
(1b) sends the detection signal to the control unit 4 because the ultraviolet rays of the sunlight in a certain place are detected by the flame detection device 1a.
_{When 1} and 1a ₂ (1b ₁ and 1b ₂ ) are similar to the flame-specific ultraviolet light to be detected, the flame detectors 1a ₁ and 1a 1
a ₂ (1b ₁ and 1b ₂ ), even if one of them detects this ultraviolet ray of sunlight and malfunctions, the fire detecting means 1a (1
This is to prevent b) from malfunctioning.

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 as a trigger and receives a voice message registered in advance by a control signal from the control section 4, for example, A predetermined number of voice messages, for example, 5
It is made to repeat many times. The voice message generating unit 5 is installed around the building A and amplifies the voice message so as to increase the number of people in the building A and the building A.
Speaker 50 for notifying people who are in the vicinity of the building, and also installed around the building A, and operating by a control signal from the control unit 4 to visually notify that an abnormality has occurred. Red rotating light 51 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), and the discharge side is connected to the water discharge device 2A through the pipe 31, the electromagnetic valve 8A and the pipe 3A in this order,
The pipe 31, the solenoid valve 8B, and the pipe 3B are connected to the water discharge device 2B via the pipe 31 in this order. The pump 3 is started / stopped by a control signal from the control unit 4 and, at the time of start-up, pumps out fire-extinguishing water from a water source to the water discharge devices 2A and 2B at a predetermined pressure.

The solenoid valves 8A and 8B are each opened and closed by a control signal from the control unit 4, but are normally closed (when fire extinguishing work by a water discharge device or fire prevention action is not performed). Have been. The water discharge devices 2A and 2B are installed around the building A so that water can be discharged into the areas corresponding to the detection area of the fire detection means 1a and the detection area of the fire detection means 1b, respectively. Water discharge device 2A
2B, as shown in FIG. 2A, includes a nozzle portion 23, a swing plate 232, and a rotation switching device 233, and a box lid 22 is fixed to an upper portion of the nozzle portion 23. The water discharge device 2A (2B) is normal as shown in the figure in (when not the water discharge by dissipating water systems), upper ground level with the bottom part is connected piping 3 A, and 3B The box lid 22 is built in the cover 21 which is slightly protruding. On the other hand water discharge equipment
Location 2A (2B) figure at the time of water discharge by dissipating water system 2
As shown in FIG. 2B, the nozzle unit 23 is raised upward (in the direction indicated by the arrow C in the figure) together with the box lid 22 by the water pressure from the pump 3 so that the nozzle 23 is positioned above the cover 21.

As shown in FIG. 3, the nozzle portion 23 discharges water upward from the upper portion of the building A from the nozzle portion to form a water discharge curtain covering the building. Is aimed at. The rocking plate 232 and the rotation switching device 233 have a mechanism for rocking the nozzle portion 23 at a predetermined rocking angle β as shown in FIG. 4 when a predetermined water discharge pressure is applied. Therefore, as shown in FIG. 5, water is sprayed on a partial area of the building A corresponding to the detection area of the fire detecting means 1a by water discharge by the water discharge device 2A, and a water discharge curtain is formed on the partial area, Water is sprayed on the other area of the building A corresponding to the detection area of the fire detection means 1b by water discharge by the water discharge device 2B, and a water discharge curtain is formed in 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 is transmitted from the fire detector 9 to the control unit 4 via the fire alarm device 7a. Indoor fire hydrant 7
b is a pipe 7b ₁ provided with a pressure reducing valve 7b ₂ on the way.
Is connected to a pipe 31 that connects the discharge port of the pump 3 and each of the solenoid valves via the. Therefore, when extinguishing indoor fire hydrant 7b, so that the extinguishing water from the pump 3 is supplied to the reduced pressure has been該屋the hydrants to a predetermined pressure by the pressure reducing valve 7b _2. Thus for it reduced to a predetermined pressure by the pressure reducing valve 7b ₂ extinguishing water supplied to the indoor fire hydrant 7 b is water discharge device 2A, setting release water pressure 2B indoor fire hydrant 7b
This is because the discharge pressure of the pump 3 is set so as to correspond to the set water discharge pressure of the water discharge devices 2A and 2B.

The control unit 4 is turned on when fire extinguishing activities are performed by using both the water discharge devices 2A and 2B installed outside the building A and the indoor fire hydrant 7b installed inside the building A. The switch button 41 is turned on, and the fire switch is turned on when the fire extinguishing operation is completed and the pump 3 and the solenoid valves 8A, 8B are returned to the state before the fire extinguishing activity, without the risk of the building A burning and burning out. Reset button 42,
An electronic control unit 60 composed of, for example, a microcomputer
It is composed of

The microcomputer 60 is a control device for realizing the above-mentioned pressure feeding control means by software processing.
The central processing unit (CPU) 6 as shown in FIG.
1, input-output unit (I / O unit) 62 and a timer 63, a read only memory (ROM) and random access memory (not shown) (RAM), etc., connected via a Basra <br/> Lee emissions it does not shown It has a known hardware configuration.

The I / O section 62 includes a fire detecting means 1
a, the detection signal from the 1b, is input sense signal from a fire alarm unit 7a, and supplies to the A / D converter (not shown) of these signals with delivery to Basra <br/> Lee down after analog-to-digital converter , A signal input from the bus line , the pump 3, the solenoid valves 8A and 8B and the voice generation message section 5
And is transmitted to the red rotating light 51 to control them.

The timer 63 is provided with fire detecting means 1a, 1b.
When more of the detection known signal is input to the I / O unit 62, with operating the detection signal as a trigger, the time period comparable to the voice message generating unit 4 of the voice message is completed, the pump 3 Has a function of delaying the output of the control signal to the controller. The CPU 61 of the microcomputer 60 having the above configuration executes the processing of the flowchart described below according to a program stored in a ROM (not shown). FIG. 6 is a flowchart for explaining the operation of one embodiment of the main part of the present invention.

In FIG. 2, it is first determined whether or not a fire has been detected in step 102 , that is, whether or not a detection signal or a detection signal has been input from the fire detection means 1a, 1b or the fire alarm device 7a. If not, the process of step 102 loops, and if a fire has been detected, it is determined whether or not a fire has been detected outdoors (step 104).

If it is determined in step 104 that an outdoor fire has been detected, a voice message is generated by the voice message generator 5, the rotating red light 51 is activated, and the timer 63 is activated (step 106). ),
Close the solenoid valve corresponding to the unused water discharge device (water discharge device for discharging water to the area corresponding to the detection area of the fire detection means that has not sent a detection signal) (step 10).
8).

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

At step 114, it is determined whether or not the reset button 42 has been turned on. If it is determined that the reset button 42 has not been turned on, the processing at step 114 loops, and Is turned on, that is, when the fire extinguishing activity eliminates the risk of burning and burning out of the building A and the fire extinguishing activity ends and the reset button 42 is pressed, the pump 3 is stopped and Then, 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 determined not to be outdoors fire detection in step 104, i.e. the fire sense knowledge 9 is a fire
Sensitized knowledge, when this sensitive knowledge signal is transmitted via the fire alarm device 7a causes the closing solenoid valves 8A and 8B which correspond to each of the water discharge device 2A and 2B (Step 13
0), and then start pump 3 (step 13).
2). Thus, the water discharge device 2A in this case, extinguishing water to 2B is not pumped from the pump 3, fire-extinguishing water that has been reduced to a predetermined pressure by the pressure reducing valve 7b ₂ only indoors hydrant 7b is pumped from the pump 3 It will be.

Next, at step 134, the combined switch is set to O
It is determined whether or not N has been set, and if it is determined that the combined switch has not been turned ON, it is determined whether or not there is a fire detection from outside (step 136). The determination of whether or not there is a fire detection from outside in step 136 is performed even if it is determined in step 104 that there is no detection of fire from outside, if the degree of fire thereafter is large. This is because fire detection from outside may be performed.

If it is determined in step 136 that a fire from outside has been detected, the process in step 138 is executed. Since the process in step 138 is the same as the process in step 106 described above, The description of is omitted. Next, it is determined in step 140 whether or not the time is up. If it is determined that the time is not up, step 14 is performed until the time is up.
The process of 0 loops. When it is determined in step 140 that the time is up, all the solenoid valves (the solenoid valves 8A and 8B in this embodiment) are opened (step 142), and the fire extinguishing from the water discharge devices 2A and 2B is started. I do.

The reason why all the solenoid valves are opened in step 142 is that when the fire detecting means 1a, 1b detects a fire due to a fire from the inside of the building A, the degree of the fire is considerably large. It is thought that it is water discharge device 2
This is because it is necessary to discharge water from both A and 2B.
Thereafter, it is determined in step 144 whether or not the reset button has been turned ON. If the reset button 42 has not been turned ON, the process loops to step 134, while the reset button 42 has been turned ON in step 144. When it is determined, the process proceeds to step 116,
Then to step 102 to loop.

Further, when it is determined that there is no fire detection than outdoors at step 136, when there is no need for water discharge from the immediate Chi release water system 2A, 2B, the process proceeds to step 144, described above in Step 144 is executed. On the other hand, if it is determined in step 134 that the combined switch is ON, then steps 162 to 166
Are sequentially executed, but these steps 162, 1
Steps 64 and 166 correspond to step 13 described above, respectively.
The processing is the same as that of steps 8, 140 and 142, and a description thereof will be omitted. After the process of step 166 is completed, it is determined in step 168 whether or not the reset button 42 has been turned on. If it is determined that the reset button 42 has not been turned on, the process of step 168 loops, On the other hand, when it is determined that the reset button has been turned ON, the processing of the above-described step 116 is executed, and then the process loops to step 102.

According to the above-described embodiment, since the fire spread prevention device for the building does not need to be directly installed on the building A, the building A is preserved in the state at the time of building, and the outside of the building is protected. It is possible to extremely effectively prevent the spread of fire. In addition, since the fire spread prevention device of the building is automatically activated by the control unit 4, it is possible to continuously monitor the fire for 24 hours even in an unmanned state, and in the case of a manual fire extinguishing activity. Fire extinguishing activities can be performed without causing a problem in skill level, which is a problem in particular.

Furthermore, since the building fire spreader does not need to be directly installed on the building A, it can be installed at low cost.
Further, since the nozzle portion 23 of the water discharge device discharges water upward from the upper part of the building A and swings to form a water discharge curtain covering the building A, it is similar to a conventional outdoor fire hydrant. There is very little risk that the building A will be physically destroyed by the water pressure of the rod-shaped water discharge.

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 not used. Since there is no complication, the installation work can be easily performed, and thus the workability can be improved. Furthermore, even if a fire alarm device or the like is already installed in the building, it can be connected to these existing equipment and controlled integrally with the existing equipment. The fire spread can be more effectively prevented together with the equipment.

In the above embodiment, the number of fire detecting means is not limited to two, but may be one or more as long as a fire can be detected in the entire area of the building A. Further, the flame detecting devices 1a ₁ and 1a ₂ (1b ₁ and 1b ₂ ) of the fire detecting means 1a (1b) are not limited to those detecting ultraviolet light peculiar to flame.
For example, the flame may be detected based on the temperature or the like.
Furthermore, the fire detecting means 1a (1b) is not limited to the one provided with two flame detecting devices, but may be, for example, only one. In this case, the AND circuit 11a described above is used.
Since (11b) becomes unnecessary, the fire detecting means 1a (1
b) becomes to be composed of only a single flame sensing device 1a ₁ (1b _1).

The water discharge device 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 23 rises due to the water pressure as shown in FIG. In this case, it is possible to prevent water from directly splashing on the side of a building whose side is a mud wall or a shoji, and to place the box lid 22 higher than a human back stick. Since it is located, it is possible to ensure human safety when the box lid 22 rises momentarily due to the water pressure.

Further, in this embodiment, the fire detecting means 1
a, 1b, a remote alarm device 10 for notifying a security company or the like of an abnormality based on a control signal from the control unit 4 when a detection signal or a detection signal from the fire alarm device 7a is transmitted, for example. Is preferred. In this case, an employee of the security company or the like can quickly rush to operate the combination switch 41 and the reset switch 42 in a timely manner. it can. Further, as the remote alarm device 10, it is preferable to use the alarm device of the mechanical security device as well, and in this case, the mechanical security device and the disaster prevention equipment can be linked with each other, so that the security system can be further improved. Can be.

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

[0039]

According to the first and second aspects of the present invention, there is no need to directly install a building, and a water discharge curtain is formed so as to cover the building. It is possible to prevent the building from spreading without burning. In addition, when a fire is detected, the initial startup is automatically performed, so that a timely fire extinguishing activity can be reliably performed without a problem of the skill level of a person. Further, since there is no need to directly install the apparatus on a building, construction work with advanced technology is not performed, so that workability can be improved.

According to the second aspect of the present invention, after a fire is detected, the occurrence of a fire is notified for a predetermined time, and then the pumping means is activated. Can be quickly evacuated, and these people can be prevented from being involved in dangerous fire fighting.

[Brief description of the 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 discharging unit.

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

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

FIG. 5 is an explanatory diagram for describing a sprinkling region of a water discharging unit.

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

FIG. 7 is an explanatory diagram for explaining an installation method of another example of the water discharging means.

[Explanation of symbols]

1a, 1b fire detection unit _{1a 1, 1a 2, 1b 1} , 1b 2 flame detection apparatus 2A, 2B water discharge device 3 pump 4 control unit 5 voice message generating section 7a fire alarm device 7b indoor fire hydrant 8A, 8B solenoid valve 9 fire 10 Remote alarm 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

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-52076 (JP, A) JP-A-61-88754 (JP, U) JP-A-57-95147 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) A62C 2/00 A62C 37/00 G08B 17/00

Claims (2)

(57) [Claims] 1. A fire detecting means arranged outside a building for detecting a fire , and extinguishing the fire based on a detection result of the fire detecting means ,
Or a pumping control unit for pumping water of a predetermined pressure to a water discharging unit for preventing fire spread , wherein the water discharging unit is disposed around the building and discharges water pumped by the pumping control unit. When a predetermined water discharge pressure is applied from the pumping control means.
The nozzle is sprayed from above the building.
A fire spread prevention device for a building characterized by swinging a part . Wherein further comprising a Could voice message voicing section water discharge announcement voice messages based on a detection result of the fire detection means, wherein the pumping control means for a predetermined time period from the time the fire detection means detects a fire 2. The method according to claim 1, wherein the pumping of the water is performed with a delay.
A fire spread prevention device for a building as described.