JP2002143332A - Smoke shielding device for veranda, and veranda with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent invasion of smoke, harmful gas, sparks, flames or the like caused by a fire to an upper floor from a fire-occurring floor through a veranda. SOLUTION: In this smoke shielding device, a winding-up part 9 is provided in a ceiling part 6 of the veranda 2, and guide rails 11 are provided downward from the vicinities of both ends of the winding-up part 9. A shutter 13 wound up around the winding-up part 9 is lowered along the guide rails 11 when the fire occurs. Thereby, an opening part 7 between the ceiling part 6 and a retaining wall 5 in the outer face of the veranda 2 is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a smoke shield device used for a veranda of a building having a plurality of floors, such as an apartment,
More specifically, the present invention relates to a veranda provided with a smoke barrier for a veranda and a veranda provided with the smoke barrier, which prevents smoke, harmful gas, sparks, flames, and the like from a fire from entering the upper floor through the veranda from the floor where the fire occurred.

[0002]

2. Description of the Related Art Many multi-storey buildings, such as apartments and condominiums, have a veranda, and these verandas are open to the outside between a waist wall on the outer surface and a tip of a ceiling. An opening is formed. In the event that a fire occurs in the above building, smoke, harmful gas, sparks, flames, etc. (hereinafter referred to as smoke, etc.) blown out of the above-mentioned opening of the veranda on the floor where the fire occurred will be swirled by the wind. May enter the room from the veranda on the floor. For this reason, invading smoke and harmful gases are inhaled by people on upper floors,
There was a concern that fire could be increased by losing consciousness or paralyzing motor functions, making it impossible to evacuate, and invading fire sparks and flames spreading the fire to the upper floors.

Conventionally, the only way to prevent the distribution of smoke and the like through the veranda is to close the entrance to the veranda from the room. However, the veranda is often provided with an evacuation exit and forms a part of the evacuation route, so it is not possible to completely close the entrance to the veranda from inside the room in the event of an emergency. As a result, it was not easy to reduce the damage caused by the smoke and the like.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and prevents a smoke or the like caused by a fire from entering a higher floor through a veranda from a floor where a fire occurs, and a veranda smoke shield device and the smoke barrier device. It is a technical task to provide a veranda provided with:

[0005]

In order to solve the above problems, the present invention will be described with reference to FIGS. 1 to 4 showing an embodiment of the present invention. It is configured as follows. That is, the invention according to claim 1 relates to a smoke barrier device for a veranda, which is provided on a veranda (2) of a building (1) having a plurality of floors.
(8) a winding portion (9) attached to the ceiling (6) of the veranda (2), and a guide rail (11) provided downward from near both ends of the winding portion (9). In the event of a fire, it is pulled out from the hoisting section (9), and both ends are lowered along the guide rail (11), so that the upper floor is opened from the opening (7) of the veranda (2) on the fire floor. Veranda (2)
And a shutter (13) for blocking the flow of smoke and the like to the vehicle.

The invention according to claim 6 relates to a veranda provided with a smoke shield device, which is a veranda (2) of a building (1) having a plurality of floors, and a hoist (9) is mounted on a ceiling (6). With
The shutter (13) wound around the winding section (9)
The opening (7) between the waist wall (5) and the ceiling (6) on the outer surface is closed by lowering the fire when a fire occurs.

[0007]

[Function] In normal times, the shutter is wound up by the winding portion provided on the ceiling, and a wide space is opened between the waist wall of the veranda and the ceiling, so that lighting and ventilation can be reduced. Without being disturbed by the shutter,
The view from the veranda is also sufficiently secured. In the event of a fire, the shutter is lowered from the hoisting section based on the interlocking with a fire alarm system such as a fire detector, or any operation by the occupant, thereby opening the veranda between the waist wall and the ceiling. Is closed. As a result, even if the entrance to the veranda from the room is open, it is possible to prevent smoke and the like from entering the upper floor from the opening of the veranda on the fire floor.

[0008] The shutter may be of a shutter type in which metal slats are connected because it can block fire and the like satisfactorily. In the case of a smoke shielding sheet, it is light and lightweight, so that it can be easily attached to the ceiling without applying an excessive load. This smoke shielding sheet has a shielding capacity of not more than 7.3 cm ³ / cm ² / sec at a pressure difference of 124.5 Pa after a temperature rise of 400 ° C. so that smoke at the time of a fire can be sufficiently shut off. And those containing an inorganic fiber cloth.

The shutter only needs to be able to prevent the flow of smoke and the like from the lower floor to the upper floor through the opening of the veranda. In particular, the outflow of smoke and the like from the occurrence of a fire shields the upper part of the opening. The experiment of the present invention has revealed that the inflow of smoke and the like to the upper floor is sufficiently prevented only by the above. Therefore, the shutter may be configured to be able to descend to an intermediate height between the ceiling and the floor of the veranda. In this case, since the entire length of the shutter is short, the entire smoke shielding device is configured to be lightweight and compact. In addition, since the lower end of the shutter does not reach the floor, it is possible to perform evacuation and fire fighting over the veranda's waist wall by passing under the shutter.

[0010] Of course, the shutter can be configured so as to descend at least below the upper end of the waist wall so as to completely close the opening, and further, a grid-like opening is formed in a part of the waist wall. In such a case, the shutter may be lowered until the lower end of the shutter reaches the floor of the veranda.

When the guide rail is formed at the end of the opening of the veranda, the opening can be reliably closed over the entire width direction by the lowered shutter. For example, it may be formed along a partition used for a section with an adjacent veranda, or may be formed in a part of this partition to simplify the structure and improve the appearance of the veranda.

The shutter may be lowered by, for example, a resident operating the shutter. However, if the shutter is lowered in conjunction with a fire alarm system such as a fire detector, the shutter may be lowered when a fire occurs. Can be automatically lowered, which is more preferable.

If the shutter completely closes the opening of the veranda, the shutter may hinder evacuation or fire fighting over the waist wall of the veranda. Therefore, it is more preferable to provide an opening through which the shutter can pass so that a person can pass through the shutter in the lowered state by entering and exiting the opening and closing during evacuation and fire extinguishing activities. When the shutter is made of a smoke shielding sheet, the opening / closing opening can be configured with a slit portion reaching the lower end formed at the middle portion in the width direction of the shutter, and the opening / closing opening can be easily opened by expanding the slit portion. It is.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. FIG. 1 is a sectional view of a veranda provided with a smoke shielding device, and FIG. 2 is a partially cutaway front view of the veranda.

As shown in FIG. 1 and FIG.
(2) is installed in a multi-storey building (1) such as a condominium, and this veranda (2) has an entrance from the room (3).
Opening (4) allows you to go back and forth freely. Veranda above
In (2), an opening (7) opened to the outside space is formed between the outer waist wall (5) and the tip of the ceiling (6). It is configured such that the lighting and ventilation can be sufficiently performed, and the outside can be viewed from the room (3).

On the ceiling (6) of the veranda (2), a winding part (9) of a smoke shield (8) is provided along the leading edge.
Both ends of the winding portion (9) are located near the partition (10) with the adjacent veranda. The guide rail (1) is moved downward from near both ends of the winding portion (9).
1) is provided along the partition (10). In normal times, a shutter (13) made of a smoke shielding sheet is wound around a winding core (12) of the winding section (9) and is housed in a storage box (14).

The smoke shielding sheet constituting the shutter (13) is made of a fabric made of inorganic fibers such as boron, ceramic, alumina, stainless steel, and glass.
It is preferably made of glass fiber, and more preferably made of special glass fiber having a silicon dioxide content of about 96% or more. The fabric may have enough flexibility to be wound around the winding core (12), and includes woven fabrics such as plain weave, twill weave, satin weave, entangled weave, non-woven fabric, knitted fabric, etc. It is desirable that the structure has a simple structure, and in particular, a satin weave having a dense structure is preferable.

The cloth must be clogged so as to block the passage of smoke and harmful gases. Natural rubber latex, synthetic rubber latex such as neoprene, chloroprene, butadiene, acrylic acid, methacrylic acid, croton Copolymerization of appropriately blending two or more polymerizable monomers such as monocarboxylic acids such as acids, maleic acid, fumaric acid, and itaconic acid or alkyl esters thereof or mono- or dialkyl esters of dicarboxylic acids, vinyl chloride, vinyl acetate, and vinylidene chloride. Latex etc. are used,
Particularly, a vinyl chloride resin or a silicone resin having excellent flame retardancy is preferable.

The smoke shielding device (8) is provided with a fire alarm system (1).
It is linked to the fire detector (16) of 5) and the elevating operation switch (17) provided in the room (3). In this embodiment, the smoke shielding device is linked to the fire detector.
You may link with another fire alarm system. When a fire occurs, the shutter (13) is extended from the hoist (9) by receiving a signal from the fire notification system (15) or arbitrarily operating the elevating operation switch (17).

A weight portion is provided at the lower end of the shutter (13).
The shutter (13) is pulled out by the weight of the weight portion (18). Both edges of the extracted shutter (13) are inserted into guide grooves (19) provided in the guide rail (11), and the shutter (13) descends along the guide rail (11). This guide rail (1
The shutter (1) is provided up to about one third of the height between the ceiling (6) and the floor (20) of the veranda.
The lower end of 3) descends to this height.

Thus, the opening of the veranda (2)
(7) Since the upper part is closed by the shutter (13),
The veranda from the room (3) on the fire floor through the entrance (4)
(2) It becomes difficult for smoke and the like that have entered to flow out of the opening (7), and it is prevented that the smoke or the like exits the opening (7) and enters the upper floor.

FIGS. 3 and 4 show a second embodiment of the present invention. FIG. 3 is a sectional view of a veranda provided with a smoke shielding device, and FIG. 4 is a partially cutaway front view of the veranda.

In the second embodiment, a smoke barrier similar to that of the first embodiment is provided on the veranda, but the lower end of the guide rail (11) extends to the vicinity of the floor (20) of the veranda (2). The configuration differs from the first embodiment in that it is provided. Therefore, by receiving a signal from the fire alarm system (15) or operating the lifting operation switch (17), the shutter
(13) descends until the lower end reaches the floor (20), whereby the entire opening (7) between the waist wall (5) and the ceiling (6) of the veranda (2) is shuttered ( 13) Smoke and the like that enters the veranda (2) from the room (3) through the entrance (4) through the opening (7) and enters the upper floor through the opening (7) on the floor where a fire occurs because of the blockage at 13) In addition, on floors higher than the fire occurrence floor, smoke and the like from the lower floors are prevented from flowing in from the opening (7) of the veranda (2).

In the second embodiment, the shutter (13) can be moved to an arbitrary height, such as the same height position as in the first embodiment, by operating the up / down operation switch (17). It is also possible to stop with. Further, in this embodiment, a veranda is provided on the immediately upper floor, and the above-mentioned ceiling portion is constituted by the floor portion of the veranda on the immediately upper floor,
When there is no veranda just above the floor, such as the top floor, the eaves constitute the ceiling. On the top floor of the building,
It is not necessary to prevent the outflow of smoke and the like from the room, but the inflow of smoke and the like from the lower floor can be prevented by lowering the shutter.

The shutter (13) is formed with a slit (21) reaching the lower end in the middle part in the width direction. The slit (21) forms an opening (22) through which a person can pass. is there. The weight portion (18) is configured to be separable at the lower end of the slit portion (21), and the slit portion (21)
The ends of the smoke shielding sheets on both sides are superimposed on each other so that smoke and the like can be reliably blocked.

When evacuating beyond the waist wall (5) of the veranda (2) or entering the veranda (2) for fire extinguishing activities, the opening and closing opening (22) is pushed out to enter and exit. By that
It can easily pass through the shutter (13) in the lowered state. The weight (18) is also provided at the lower end of the opening (22), and the opening and closing of the opening (22) is naturally closed by the weight (18) when a person enters and exits. .

In each of the first and second embodiments, a case has been described in which one veranda is provided with one smoke shield device. However, in the present invention, a plurality of smoke barrier devices are provided on one veranda, and each shutter is provided with a shutter. May be arranged in a state of being connected in the lateral direction. In addition, when there is an opening on the lateral side in addition to the front side of the veranda, it goes without saying that a smoke shielding device can be provided on each side of the veranda.

[0028]

As described above, the present invention has the following effects.

(B) In normal times, lighting and ventilation are not hindered, and the view from the veranda can be sufficiently secured.
In the event of a fire, the shutter is lowered from the hoist and the opening between the waist wall and the ceiling of the veranda is closed. Can effectively prevent invasion of smoke and the like to the upper floors, and reduce damage caused by fire.

(B) The shutter has a ventilation rate of 7.3 cm ³ / cm ² / at a pressure difference of 124.5 Pa after a temperature rise of 400 ° C.
When it is made of a smoke shielding sheet containing inorganic fiber cloth, it has a shielding ability of less than a second, it can sufficiently block smoke etc. at the time of fire occurrence, and it is lightweight so that it does not place an excessive burden on the ceiling It can be easily attached, and can be compactly wound around the winding section, so that the view and appearance from the veranda can be maintained well.

(C) When the shutter is configured to be able to descend in conjunction with the fire alarm system, the shutter can be automatically descended when a fire occurs so that the opening of the veranda can be reliably closed.

(D) If the shutter is configured to be able to descend to an intermediate height between the ceiling and the floor of the veranda, the entire length of the shutter can be shortened, so that the entire smoke shielding device can be made lightweight and compact. In addition, it can be easily installed with little burden on the ceiling and can be implemented at low cost. In addition, since the lower end of the shutter does not reach the floor surface, it is possible to perform evacuation or fire fighting over the veranda's waist wall by passing under the shutter.

(E) If the shutter is provided with an opening through which a person can pass, the opening and closing can be entered and exited as necessary, so that evacuation can be performed more safely and fire extinguishing activities can be performed more effectively. Can be. At this time, if the shutter is formed of a smoke shielding sheet, the opening and closing opening can be easily formed by configuring the opening and closing opening with a slit portion reaching the lower end formed at the widthwise intermediate portion of the shutter.
It can be opened and closed very easily.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a veranda provided with a smoke shield device, showing a first embodiment of the present invention.

FIG. 2 is a partially cutaway front view of the veranda according to the first embodiment.

FIG. 3 is a view corresponding to FIG. 1, showing a second embodiment of the present invention.

FIG. 4 is a view corresponding to FIG. 2, showing a second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... building, 2 ... veranda, 5 ... waist wall, 6 ... ceiling part, 7 ... opening part, 8 ... smoke shielding device, 9 ... winding part,
11… Guide rail, 13… Shutter, 15… Fire alarm system, 20… Floor surface, 21… Slit, 22… Opening / closing opening.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court ゛ (Reference) E06B 9/17 E06B 9/17 B 9/68 E 9/204 Z

Claims (7)

[Claims] 1. A veranda (2) of a multi-storey building (1).
A windshield (9) attached to a ceiling (6) of a veranda (2).
A guide rail (11) provided downward from the vicinity of both ends of the hoisting portion (9); and a guide rail (11) drawn out of the hoisting portion (9) in the event of a fire and having both end edges along the guide rail (11). The shutter (1), which blocks the flow of smoke and the like from the opening (7) of the veranda (2) on the fire occurrence floor to the veranda (2) on the upper floor, by descending.
3) A smokeproof device for a veranda, comprising: 2. The shutter (13) has an air flow rate of 7.3 cm ³ / cm ² / at a pressure difference of 124.5 Pa after a temperature rise of 400 ° C.
The veranda smoke-shielding device according to claim 1, comprising a smoke-shielding sheet having a shielding ability of not more than seconds and containing an inorganic fiber cloth. 3. The veranda smoke control device according to claim 1, wherein the shutter (13) is configured to be able to descend in conjunction with a fire alarm system (15). 4. The shutter according to claim 1, wherein the shutter is configured to be able to descend to an intermediate height between a ceiling portion of the veranda and a floor surface. Item 2. The veranda smoke suppressor according to item 1. 5. The veranda smoke shield according to claim 1, wherein an opening (22) through which a person can pass is formed in the shutter (13). 6. The shutter (13) is made of a smoke shielding sheet, and the slit (21) reaching the lower end formed at the widthwise middle portion of the shutter (13) constitutes the opening / closing opening (22). The veranda smoke shield device according to claim 5. 7. A veranda (2) of a multi-storey building (1).
The ceiling (6) is provided with a hoisting portion (9), and the shutter (13) wound up by the hoisting portion (9) is lowered in the event of a fire, so that the outer waist wall (5) is formed. Ceiling (6)
A veranda provided with a smoke-blocking device, wherein the veranda is configured to close an opening (7) between the veranda.