JP2000000324A - Fire preventive device in building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire preventive device in a building, that can ensure fire preventing function while avoiding upper facilities in the case of providing a ceiling with the horizontally continuous upper facilities. SOLUTION: The interior of a large space building 14 is divided in a plurality of fire preventive sections P1, P2..., and a vertical fire wall body 22 and horizontal fire wall bodies 24 are provided at a boundary position. The vertical fire wall body 22 is formed in housed structure wound by a first roller 26 and normally wound and housed in a case 28 while being delivered from the first roller 26 to make its lower end reach a floor face 16 when a fire occurs. The horizontal fire wall bodies 24 are arranged on both sides of the vertical fire wall body 22 and respectively extended by specified length W1, W2 in a horizontal direction from the upper end of the vertical fire wall body 22. The horizontal fire wall bodies 24 are formed in housed structure wound by second and third rollers 30, 32 arranged on both sides of the first roller 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire protection compartment provided in a large space building, especially a building in which upper facilities which are horizontally continuous are arranged above a large space, and the fire prevention compartment is set in an emergency due to a fire. The present invention relates to a fire prevention device in a building that is shut off to prevent spread of fire.

[0002]

2. Description of the Related Art Generally, it is necessary to take fire-prevention measures in a large building. As one of the measures, there is a method of providing a fire-prevention section and isolating the fire-prevention section from an adjacent section when a fire occurs. By blocking the fire prevention section in this way, it is possible to prevent the fire from spreading one after another, and to minimize the degree of damage. In other words, the extent of the damage caused by the fire depends on how small the range of the fire can be stopped before the fire fighting by the firefighting begins, and in the event of a fire, the fire barrier is shut off by a fire wall This makes it possible to prevent the spread of fire.

[0003] In such a large building, fire prevention measures are taken by using a fire prevention section. However, even in a large factory having a production line, it is desired to set a fire prevention section because of a large space building structure.

[0004]

However, in the case where a fire protection compartment is to be provided in a factory having such a large space structure, the fire protection wall is always stowable so as not to hinder the work. It is necessary to be able to form a fire compartment in an emergency. However, in a large factory having such a production line, a ceiling portion is effectively used, and the ceiling is provided with an upper facility such as an automatic transfer line or a piping / wiring rack which is continuous in a horizontal direction.

[0005] In the case where the ceiling is provided with the upper equipment which is continuous in the horizontal direction as described above, it is necessary to provide a fire wall avoiding the upper equipment, so that a communication portion is formed on the upper part of the fire wall. Will be. For this reason, there is a possibility that a flame, hot air, or the like may enter the adjacent fire protection section from the communication portion, and thus there is a problem that a reliable fire spread prevention effect cannot be secured.

In view of the above-mentioned problems, the present invention provides a fire protection system in a building that can secure a fire protection function while avoiding the upper equipment when the ceiling is provided with an upper equipment that is horizontally continuous. The purpose is to provide.

[0007]

In order to achieve the above object, a fire prevention apparatus in a building according to claim 1 of the present invention provides a space between a ceiling and a ceiling at a boundary position of a fire protection section set in the building. A vertical fire wall extending in the vertical direction is provided so as to be retractable, and a horizontal fire wall extending horizontally in at least one side from the vertical fire wall is provided so as to be stowable. And

According to a second aspect of the present invention, there is provided a fire protection system for a building, wherein at least one of the vertical fire wall and the horizontal fire wall is extended by utilizing gravity. And

The operation of the present invention will be described below with reference to the above construction. According to the first aspect, flames and hot air are blocked by a vertical fire barrier provided at a boundary position of a fire protection compartment, and along the vertical fire barrier. Flames rising upward can be blocked by horizontal fire walls. Then, the flame or the hot air blocked by the horizontal fire barrier is guided in a direction along which the flame and the hot air are pushed back into the fire protection compartment on the fire occurrence side.
At this time, the leading end in the extending direction of the horizontal fire wall is located at a position horizontally separated from the vertical fire wall by a considerable distance. For this reason, even if a flame rises from the front end in the extending direction of the horizontal fire wall, it is possible to suppress the influence of the flame to an adjacent fire protection section. In particular, when horizontal fire barriers are provided on both sides of the vertical fire wall, the distance between adjacent fire protection compartments is the distance between the leading ends of both horizontal fire barriers in the extending direction. To be long,
The effect of preventing fire spread between adjacent fire protection sections is improved.

[0010] At this time, since the vertical fire protection wall is always stored, it is necessary to prevent the traffic and the transportation of luggage from being hindered, and to use the space inside the building as an original work space. In an emergency, the wall can be extended to provide a fire protection function.

According to the second aspect, at least one of the vertical fire wall and the horizontal fire wall is extended by using gravity, so that an electric system is damaged by a fire and a power outage occurs. Also in this case, the wall can be reliably extended by gravity, so that the fire prevention function can be reliably exhibited.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 show an embodiment of a fire protection device for a building according to the present invention. FIG. 1 is a side view and FIG. 2 is a plan view.

That is, the fire protection device 10 of the present embodiment is applied to a large space building 14 such as a factory in which a space S is formed between opposing walls 12 as shown in FIGS.
As such a large space building 14, there is, for example, an automobile assembly factory in which an assembly line is installed. In such a factory, not only an assembly line (not shown) is provided on the floor 16, but also an upper facility 18 such as an automatic transfer line and a piping / wiring rack is provided by effectively utilizing the upper part of the space S. The upper equipment 18 is horizontally arranged continuously on the ceiling 20.

In this embodiment, the large space building 1 is used.
4 is divided into a plurality of fire protection sections P1, P2,..., And a vertically extending vertical fire protection wall 22 and a horizontally extending horizontal fire protection wall 2 are provided at the boundaries between these fire protection sections P1, P2.
4 is provided so as to be able to be stored. These walls 2
Reference numerals 2 and 24 are formed of a refractory screen made of a non-combustible film material having heat resistance and having flexibility that can be wound.

The former vertical fire wall 22 can be wound around a first roller 26 disposed at a predetermined distance L from the ceiling 20 so as to be located near the lower side of the upper equipment 18. Has become. Then, the first roller 26 is normally used.
And is stored in the case 28 while being fed out of the first roller 26 and reaching the floor 16 at the lower end in the event of an emergency such as a fire.
And between them.

On the other hand, the latter horizontal fire wall 24 is disposed on both sides of the vertical fire wall 22 and extends horizontally from the upper end of the vertical fire wall 22 by a predetermined length W1, W2. It has become. These horizontal fire walls 2
4 is wound around the second and third rollers 30 and 32 disposed on both sides of the first roller 26 and stored in the case 28.

The first, second, and third rollers 26, 30,
Reference numeral 32 denotes the vertical fire wall 22 and the horizontal fire wall 24 using an urging force of a spring or the like (not shown).
While the wound vertical fire wall 22
The extension of the horizontal fire wall 24 is performed using gravity.

That is, as shown in FIG.
2, a weight 22a is attached to the lower end, and a wire 24 connected to the end is attached to the horizontal fire barrier 24.
a around the sheave 24b, and a weight 24
c is attached. On the other hand, the first, second, and third rollers 26, 30, and 32 are provided with a mechanical lock (not shown) for preventing the rotation of the rollers. Fire wall 22
The weight of the weight 22a and the weight of the weight 24c cause the horizontal
Is automatically paid out from.

In the present embodiment, the vertical fire barrier 22 and the horizontal fire barrier 24 define the fire protection sections P1, P2 between the opposing walls 12, 12, as shown in FIG.
In addition, the fixed fire wall 3 is located above the vertical fire wall 22 with the upper equipment 18 interposed between the vertical fire wall 22 and the vertical fire wall 22.
4 is erected.

With the above construction, in the fire protection system 10 in the building of the present embodiment, the vertical fire wall 22 and the horizontal fire wall 24 which are extended from the case 28 when a fire occurs.
This defines fire compartments P1, P2. Since the space S is defined by the vertical fire wall 22 and the horizontal fire wall 24 in this manner, the vertical fire wall 22 blocks the flame and hot air approaching to crawl the lower part, and The flame rising upward along the fire wall can be blocked by the horizontal fire wall 24. Then, the flame or the hot air cut off by the horizontal fire barrier 24 is guided in a direction along which the flame and the hot air are pushed back into the fire protection compartments P1, P2 on the fire occurrence side.

The horizontal fire wall 24 is a vertical fire wall 22
, And project horizontally from the vertical fire wall 22 so as to be continuous with the vertical fire wall 22. That is, the horizontal fire wall 24 protrudes from both sides of the vertical fire wall 22 by predetermined dimensions W1 and W2. Therefore, the fire protection section P1,
A distance of W1 + W2 is substantially separated between P2. Therefore, the horizontal fire wall 2 of one fire section P1
Even when a flame rises from the tip of No. 4, this flame can be prevented from affecting the adjacent fire prevention section P2, so that it is possible to prevent the spread of fire or to increase the time until the spread of the fire. .

In the present embodiment, the horizontal fire wall 24 is not limited to being provided on both sides of the vertical fire wall 22. The horizontal fire wall 24 may be provided only on one side. Vertical fire wall 22 as in the embodiment
In the case where the horizontal fire barriers 24 are provided on both sides of the frame, the distance between the adjacent fire protection sections P1 and P2 becomes longer, so that the effect of preventing fire spread can be further improved.

In this embodiment, the vertical fire wall 2
2 and the horizontal fire barrier 24 are always stored in the case 28 to communicate with the space S, and are stored in an emergency so as to block the space S. Can be prevented from becoming an obstacle to traffic and carrying of luggage, and the space S in the building 14 can be used as an original work space. In an emergency, the vertical fire wall 22 and the horizontal fire wall 24 are extended, and the fire protection sections P1 and P2 can be shut off to exhibit a fire protection function.

In the present embodiment, the vertical fire wall 22 and the horizontal fire wall 24 are formed by weights 22a.
And 24c, the respective fire protection walls 22 and 24 can be reliably fed out even in the event of a power failure due to damage to the electric system due to the occurrence of a fire. Can reliably exhibit the fire prevention function. Also, the case where the horizontal firewall 24 is retractable has been disclosed.
Since it is installed at a high position, it does not hinder the passage and work of people, so it can be of a fixed type that always projects.

Further, in the present embodiment, the case where the vertical fire wall 22 and the horizontal fire wall 24 are formed of a refractory screen having flexibility in order to be retractable is shown, but the invention is not limited to this. You may use what applied the foaming fire protection paint to the flexible wire mesh. This foamable fire-resistant paint foams at high heat and covers the entire wire mesh to exhibit a fire-preventing function.

Further, in the present embodiment, the fixed fire wall 34 is vertically provided at a position corresponding to the vertical fire wall body 22 on the ceiling 20, but the fixed fire wall 34 is provided between the ceiling 20 and the upper equipment 18. This is not always necessary if the distance between them is small.

FIGS. 3 and 4 show fire protection devices 10a and 10b showing another embodiment, respectively.
0b is a fire section P having a layout different from that of the above embodiment.
1 and P2.

That is, the fire protection device 10a shown in FIG. 3 forms a fire protection section P1 which is closed in contact with one of the opposing walls 12. The boundary between the fire protection zone P1 and the fire protection zone P2 outside the fire protection zone P has a U-shape, along which the vertical fire wall 22 and the horizontal fire wall 24 are arranged.

The fire protection device 10b shown in FIG. 4 has a fire protection section P1 which is closed in a square shape not in contact with any of the walls 12 at the center between the opposing walls 12. Also, in this embodiment, the vertical fire wall 22 and the horizontal fire wall 2 extend along the square-shaped boundary between the fire protection sections P1 and P2.
4 are arranged.

Therefore, even in the embodiments shown in FIGS. 3 and 4, the vertical fire wall 22 and the horizontal fire wall 24 can prevent the fire from spreading between the fire protection sections P1 and P2. Of course, even in these other embodiments, the vertical fire wall 22 and the horizontal fire wall 24 can be formed of a fire screen or a wire mesh coated with an intumescent fire paint,
In addition, the horizontal fire barrier 24 can be provided on either side of the vertical fire barrier 24, and the horizontal fire barrier 24 can have a fixed structure. By the way, in each of the above embodiments, the horizontal fire wall 24 is
Although the case where it protrudes in the horizontal direction from the upper end of 2 was disclosed,
The present invention is not limited to this, and may be extended obliquely upward or downward from the middle of the vertical fire wall 22. In short, the horizontal distance W 1 between the tip of the horizontal fire wall 24 and the vertical fire wall 22. , W2 as long as a predetermined amount can be secured.

[0031]

As described above, in the fire protection system for a building according to the first aspect of the present invention, the flame and the hot air are protected by the vertical fire wall provided at the boundary of the fire compartment set in the building. The flame that is shut off and rises up along the vertical firewall can be interrupted by the horizontal firewall. In addition, since the leading end in the extending direction of the horizontal fire wall is located at a position horizontally separated from the vertical fire wall by a considerable distance, even if a flame rises from the leading end in the extending direction of the horizontal fire wall. In addition, it is possible to suppress the influence of the flame on the adjacent fire prevention section, thereby preventing the spread of the fire or increasing the time until the spread of the fire. In particular, when a horizontal firewall is provided on both sides of the vertical firewall,
Since the distance between the leading ends in the extending direction of both horizontal fire barriers is increased, the effect of preventing fire spread between adjacent fire protection compartments can be further improved. In addition, since at least the vertical fire protection wall of the two walls is always stored, it is possible to prevent an obstacle to traffic and carrying of the luggage, and use the space in the building as an original work space. And can be extended in an emergency to provide a fire protection function.

According to a second aspect of the present invention, there is provided a fire protection system for a building, wherein at least one of the vertical fire wall and the horizontal fire wall is extended by using gravity. Therefore, even in the event of a power outage due to damage to the electric system due to a fire, the wall can be extended by gravity, so that the original fire protection function can be reliably exhibited, and Has an excellent effect that safety in the event of a fire can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a fire protection device of the present invention.

FIG. 2 is a plan view showing an arrangement of the fire protection device of FIG. 1;

FIG. 3 is a plan view showing another arrangement of the fire protection device of FIG. 1;

FIG. 4 is a plan view showing still another arrangement of the fire protection device of FIG. 1;

[Explanation of symbols]

 10, 10a, 10b Fire protection device 12 Wall 14 Large space building 18 Upper equipment 20 Ceiling 22 Vertical fire wall 22a Weight 24 Horizontal fire wall 24c Weight S Space P1, P2 Fire compartment

Claims (2)

[Claims] 1. A vertical fire wall extending in a vertical direction is provided at a boundary position of a fire protection section set in a building so as to be stowable with a space between the vertical fire wall and the vertical fire wall. A fire protection device for a building, characterized in that a horizontal fire protection wall extending horizontally from at least one side of the building is provided so as to be retractable. 2. The fire protection system according to claim 1, wherein at least one of the vertical fire wall and the horizontal fire wall is extended using gravity.