JPH03103269A - Safety block system for fire escape stair - Google Patents

Abstract

PURPOSE:To take refuge, while confirming a fire state through a door at the time of a fire by opening an exit for refuge in a wall opening part in the vicinity of a fire escape stair of a building, and providing a door to which foaming fireproof glass is attached in the exit. CONSTITUTION:On the wall part of a boundary of a fireproof block 2 and a room side, two refuge exists 4a, 4b are opened, and on the outer wall part opposed thereto, a lighting open part 5 is provided. On each exit 4a, 4b, a pair of doors 6 supported axially by the respective opening both side parts are provided so as to be openable and closable. Each door 6 is constituted so that foaming fireproof glass 7 is held by a frame 8 extending over the whole surface, and the foaming fireproof glass 7 has transparency, and constituted so that the reverse side is visible through it. The foaming fireproof glass 7 is constituted by placing, for instance, a transparent foaming agent of a silicic acid soda compound and a foaming agent of an aluminum phosphate compound between glass plates of several layers and sticking them. In this state, at the time of a fire, the glass plate of one side is broken and a heated soda compound transparent fireproof paint layer foams, and by its heat insulating effect, the spread of fire can be prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a door or shutter made of foamed fireproof glass on the wall near the evacuation stairs of a building, so that in the event of a fire, the fire situation can be monitored through the door or shutter. This relates to a safety zone system for evacuation stairs that allows evacuation while confirming the situation.

[Prior Art] For evacuation in the event of a fire, a building is provided with a fire protection compartment l2 having an evacuation staircase 1l, as shown in Fig. 4, and a shutter 13 is installed between the evacuation staircase l1 and the room. It is provided. In addition, the fire protection compartment l2 is provided with an opening l4 for daylighting, and a narrow fire door l5 for passing through during evacuation.
is provided. In the event of a fire, the shutter 13 is lowered to shut off the fireproof compartment l2 and the room side. narrow fire door l5
From there, evacuate through the evacuation stairway l1.

During evacuation, evacuees will stay near the stairway entrance, so to protect evacuees from flames and smoke, the evacuation stairway 1 is set up as shown in Figure 5.
An attached room l6 may be provided adjacent to the fire protection compartment l2 having a fire protection compartment l2. In this case, an openable window 17 is provided in the fire protection compartment l2. A lighting window l8 and a fire door l9 are provided on the boundary wall between the fire protection compartment l2 and the attached room l6. In the event of a fire, enter the attached room l6 from the room side through the fire door l5,
Furthermore, it is possible to enter the evacuation stairs 11 through the fire door l9.

[Problems to be Solved by the Invention] Conventionally, in the event of a fire, the opening of an evacuation staircase is closed by a fire shutter, and evacuees evacuate using a narrow fire door.

However, as it is blocked off by a shutter, evacuees cannot check the situation in the evacuation stairway from a distance, so they have to approach and open the fire door, or check inside through the small wired glass window attached to the fire door. After that, they must evacuate to the evacuation stairwell, which may delay evacuation and become dangerous depending on the fire situation. Furthermore, since fire doors are not normally used or are made narrow to block flames, heat, etc., they can cause an arch action phenomenon that stops the flow of evacuees.

Furthermore, during firefighting operations, it is difficult to confirm the situation in the fire room than in the evacuation stairway, which is extremely dangerous, and there are times when firefighting cannot be carried out effectively. Furthermore, conventional shutters and fire doors have poor heat shielding performance, and after a fire breaks out, evacuees are likely to be unable to use the evacuation stairs due to the influence of radiant heat from the fire room through the shutters and fire doors. There were times when I couldn't do it enough.

On the other hand, in order to protect the people inside M@ from smoke and flames, if an attached room is built next to the evacuation staircase to ensure safety, a large evacuation space will be taken up in the building, which is uneconomical. Become something.

Therefore, the present invention is designed to equip the wall openings near the evacuation stairs with foamable fireproof glass that has heat-shielding, flame-shielding, and smoke-shielding properties, so that evacuation from the evacuation stairs can be carried out safely and quickly in the event of a fire. The purpose is to take into account comfort, functionality, and to enable firefighting activities to be carried out safely and accurately.

[Means for Solving the Problems] The safety zone system for evacuation stairs of the present invention has an evacuation doorway opened in a wall opening near the evacuation stairway of a building, and foamed fireproof glass is attached to the doorway. Set up a door. In the event of a fire, the building was made so that people could evacuate while checking the fire situation through the door.

Instead of providing a door in the wall opening near the evacuation staircase, a shutter may be provided and foamed fire-retardant glass may be applied to it.
Alternatively, both a door and a shutter may be provided in which foamed fireproof glass is applied to the wall opening.

Foamable fire-retardant glass is constructed so that a transparent foaming agent based on sodium silicate or a foaming agent based on aluminum phosphate (and others) is inserted between the eyebrows of the glass and foams due to heat. Like glass, it is highly transparent, so you can see what's inside.

[Function] In the above-mentioned safety zone system for evacuation stairs. Even if a door or shutter to which foam fireproof glass is applied is shut off in the event of a fire, the inside of the door or shutter can be seen through it.

Therefore, evacuees using the evacuation stairs can grasp the situation at their evacuation destination in advance through the fireproof foam glass, allowing them to evacuate smoothly.

Furthermore, during firefighting operations, the situation in the fire room can be accurately grasped from the stairwell through the foam fireproof glass. In this case, since the foamable fireproof glass cuts radiant heat, evacuees who evacuate from the upper floors using the evacuation stairs can be safely evacuated.

Furthermore, when flames approach the foamable fireproof glass, the foam layer foams due to the heat, blocking the heat and preventing the spread of fire.

[Example] A first embodiment of the present invention will be described with reference to FIG.

A building is provided with a fire prevention section 2 equipped with an evacuation staircase 1 for evacuation in the event of a fire or the like. Two evacuation entrances 4a and 4b are opened in the wall 3 at the boundary between the fire protection compartment 2 and the room side, and an opening 5 for daylighting is provided in the outer wall opposite thereto. Each of the entrances and exits 4a and 4b is provided with a pair of doors 6 that are pivotally supported on both sides of each opening and can be opened and closed.

Each house 6 has a frame 8 of foam fireproof glass 7 over its entire surface.
The foamable fireproof glass 7 is transparent, and the opposite side can be seen through it. The foamable fireproofing glass 7 is constructed by, for example, sandwiching a sodium silicate-based transparent foaming agent, an aluminum phosphate-based foaming agent, etc. between several layers of glass plates and adhering them. In the event of a fire, the glass plate on one side breaks and the heated soda-based fire-retardant paint layer foams, and its insulating effect prevents the spread of fire.

Although the number of doors is set to two in the above example, the number of doors can be changed to an appropriate number depending on the size of the door or the dimensions of the wall opening, and the size and number of doors can be adjusted to allow the evacuee 9 to pass through smoothly. It is desirable to do so. Further, as shown in FIG. 2, a foamable fireproof glass 7 may also be provided around the door 6 provided in the wall by holding it in a frame.

Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, a shutter 10 using foamable fireproof glass 7 is provided between two doors 6, and is applied when the wall opening surface between the fireproof compartment 2 and the room side is large. The opposite side can be seen through the two doors 6 and the shutter lO.

In the above embodiments, a door or a door and a shutter using foamed fire-retardant glass were provided in the wall opening, but only a shutter may be provided to isolate the evacuation staircase side from the room side.

If the evacuation stairs can be blocked off with doors or shutters as described above, in the event of a fire, people can evacuate through the evacuation stairs while checking the fire situation inside the room.
Firefighting activities can also be carried out appropriately while checking the fire situation. In this case, the foamable fireproof glass can also block radiant heat, so the evacuation staircase side will not become dangerously heated.

[Effects of the Invention] According to the safety zone system for evacuation stairs of the present invention, in the event of a fire, the fire situation can be accurately grasped through the foam fireproof glass used for the door or shutter that blocks the evacuation stairs from the room side. , it is possible to check the fire situation from a distance and evacuate safely, and it is also possible to carry out firefighting operations appropriately and safely. Foamed fireproof glass also cuts radiant heat, preventing heating on the side of the evacuation stairs, allowing evacuees to pass safely.

Furthermore, by applying doors and shutters that use foamed fire-retardant glass, it is possible to create a large door space for evacuees to escape, which prevents the arch action phenomenon, and also prevents smoke and flames. It is economical since it is possible to omit the installation of an attached room, etc.

[Brief explanation of drawings]

FIG. 1 is a plan view of the evacuation staircase portion of the first embodiment of the present invention;
Figure 2 is a front view of the door leading to the evacuation stairs, Figure 3 is a plan view of the evacuation stairs of the second embodiment, and Figures 4 and 5 are plan views of the evacuation stairs of different conventional examples. . 1; Evacuation stairs 3; Wall 5; Opening 7: Foaming fireproof glass 1O: Shutter fireproof compartment evacuation entrance/exit door frame

Claims (4)

[Claims] (1) An evacuation entrance is opened in the wall near the evacuation stairs of the building, and a door with foam fireproof glass is installed at the entrance, so that in the event of a fire, evacuation can be done while checking the fire situation through the door. A safety compartment system for evacuation stairs, which is characterized by: (2) The safety compartment system for evacuation stairs according to claim 1, wherein a separate opening is further provided in the wall portion provided with the evacuation entrance and a shutter made of foamed fireproof glass is provided therein. (3) A safety zone system characterized by installing a shutter made of foamed fireproof glass in a position opposite to the evacuation stairs of a building, so that in the event of a fire, it is possible to evacuate while checking the fire situation through the shutter. (4) The safety zone system for evacuation stairs according to any one of claims 1 to 3, wherein the foamable fireproof glass has a sodium silicate transparent foaming agent layer and is configured to foam when heated.