JPH076467Y2 - Fireproof shelter door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a so-called fireproof shelter door that protects persons and articles inside from the heat of a fire or the like.

[Conventional technology]

A so-called fire-resistant shelter is a facility that is provided to protect people and valuables from the fire and heat generated by a fire, etc., but in many cases, technology related to fire-resistant buildings, vaults, etc. is applied to its manufacture.

[Problems to be solved by the device]

In the conventional manufacturing technology for refractory structures and vaults, etc., since the doors provided at the entrances to the built fireproof rooms are mostly sliding doors and swing doors with fireproof performance,
There is a limit to the thickness of the door that can be formed, and therefore the fire resistance time varies depending on the thickness of the door, the material of the fire resistant layer, etc., but there are few that are longer than necessary.

On the other hand, in the case of so-called skyscrapers that have been built a lot recently, when a fire occurs and the fire spreads,
It is empirically known that the building often spreads over a long period of time. This is because it is a skyscraper and it is difficult to carry out sufficient fire fighting activities for high-rise parts.

However, in such a skyscraper, if a fire occurs and it spreads, residents in the high-rise areas may not be able to evacuate to the outside. The idea is to allow residents to evacuate into the shelter in the event of a fire.

However, such a fireproof shelter has a sufficient wall thickness, for example, a thickness of 2 m or more, in order to sufficiently protect the evacuees inside from the high temperature outside even if the fire lasts for a long time. It is planned to be formed in a space surrounded by wall surfaces.

By the way, as shown in Fig. 4, the temperature rise due to the fire inside the building is about 30 minutes after the fire started.
The temperature rises to 860 ℃, and it reaches about 925 ℃ after 1 hour.
About 1010 ℃ in 3 hours, about 1050 ℃ in 3 hours, about 1095 ℃ in 4 hours
It is also reported that

Therefore, assuming that the fire will continue to spread for 4 hours or more due to a building fire or the like, even in such a case, in order to maintain the temperature inside the fireproof shelter at a temperature at which a person can survive, the wall thickness is large. Is more preferable, for example, 2m
It is possible to set the above.

However, a door is provided in a fireproof shelter surrounded by a fireproof wall having such a large thickness, and a conventionally known sliding door or a swing door type fireproof door is provided in the doorway, the door is a wall surface, I made a big business trip outside, or
Since a surplus space for opening and closing this door is indispensable, it is difficult to install the conventional type fireproof door.

[Means for Solving the Problems]

Therefore, in the present invention, even if it is attached to the entrance provided on the wall formed to be extremely thick to exhibit fire resistance for a long time, it does not travel to the inside or outside of the wall, and there is excess for opening and closing. The purpose of the present invention is to provide a door that does not require a large space, and the structure is such that the inside and outside of the wall surface of the fireproof shelter having a predetermined thickness has a front-rear width of about a passage width and a required width in parallel with the wall surface. An air layer having a height is formed, and a vertical cylindrical shape having a diameter larger than the thickness of the wall surface in plan view and having a height larger than the total height of the air layer is formed on the wall surface. , A cylindrical body having an outer diameter and a height that substantially match the planar shape of the opening in the opening, and the through-hole having a width substantially the same as the front-rear width of the air layer is rotated. When the through hole is aligned with the air layer The formed a door body as rotation, it is characterized in fixed freely that fitted.

[Action]

The through-hole formed on the diameter of the cylindrical door body has a cylindrical wall surface that shuts off the inside and outside of the wall surface when the door body is rotated and the through-hole becomes parallel to the wall surface. When the opening is closed and the door rotates in a direction in which the through hole is orthogonal to the wall surface, the inside and outside of the wall surface communicate with each other to form a passage.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan sectional view showing an example of a door for a refractory shelter according to the present invention in an open state, FIG. 2 is a plan sectional view showing a door in the same closed state, FIG.
The figure is a front cross-sectional view in the open state, and FIG. 4 is a temperature-time diagram showing an example of the relationship between the spread time of fire and the temperature rise.

1 to 3, 1 is an example of a wall surface of a refractory shelter, here a refractory layer 1a having a thickness of about 750 mm and an air layer having a thickness of about 900 mm on the back side of the refractory layer 1a. It is formed by a three-layer wall surface with a heat insulating layer 1c having a thickness of about 750 mm formed via 1b. The fireproof layer 1a and the heat insulating layer 1c
Is usually made of concrete, but may be of course a wall material other than concrete.

The wall surface 1 has a total thickness of about 2400 mm, the refractory layer 1a faces the heat source side, and the heat insulating layer 1c faces the inside of the shelter.

The wall surface 1 is formed with an opening 2 having a vertically-oriented cylindrical shape.

The diameter of the opening 2 is slightly larger than the thickness 2400 mm of the wall surface 1 when viewed from above, and in this embodiment, the diameter is about 2700 mm.
By opening so as to form a vertically oriented cylindrical cylinder of mm, the outer surfaces of the fireproof layer 1a and the heat insulating layer 1c are opened in a vertically long rectangular shape on the front.

Here, the opening 2 is formed, for example, in the following structure.

That is, the refractory layer 1a previously formed as a part of the building wall 1
A door body frame in which an opening 2a for the opening 2 is formed in a large size in the heat insulation layer 1c and a door 3 described later is supported in the opening 2a.
The opening 2 is formed by attaching 2b so as to be integrated with the wall surface.

Reference numeral 3 denotes a door body frame 2b of the opening 2 having the above-mentioned substantially cylindrical shape.
Is a cylindrical door fitted into the body frame 2b of the opening 2 and having a size corresponding to
About the same thickness (width) on the diameter as the wall surface and the air layer 1b
The through hole 3b that will become
The front surface side of this is formed into the fire resistant layer 3a, and the rear surface side of this through hole 3b is formed into the heat insulating layer 3c. Incidentally, 31a is a fire-resistant surface-equipped portion formed of, for example, a ceramic layer on the outer surface of the fire-resistant layer 1a in order to improve fire resistance.

The door 3 is, for example, as shown in FIG.
Is formed in such a size that the upper and lower portions 3d and 3e of the door are fitted into the door body frame 2b located on the ceiling C and the floor F, and the annular door located on the ceiling C and the floor F. In the body frame 2b, the upper and lower portions 3d and 3e of the door 3 are rotatably supported by way of a bearing material B, for example.

The rotation of the door 3 is fixed by the driving force of the motor M or the like being transmitted to the outer tooth rack R on the outer periphery of the door via the pinion P. It is desirable that the power source of the motor M be backed up by a storage battery in case of power failure.

The door 3 may be rotated not only by a motor but also by using an automatic rotational force that utilizes the deviation of the center of gravity of the door 3 or an automatic rotational force that utilizes the repulsive force of a spring or the like.
Reference numeral 4 denotes a fireproof and heatproof seal portion formed between the inner surface of the opening 2 of the wall surface 1 and the outer surface of the door 3.

Thus, when the door 3 is placed in the orientation shown in FIGS. 2A and 2B, the through-hole 3b communicates with the air layer 1b of the wall surface 1 and is integrated, and the fire resistant layer 3a of the door 3 faces the wall surface 1 It becomes a part of the wall surface of the fireproof shelter by being integrated with the fireproof layer 1a and the heat insulating layer 3c of the door 3 being integrated with the heat insulating layer 1c of the wall surface 1.

On the other hand, when the door 3 in the direction shown in FIG. 2 is rotated 90 degrees counterclockwise so as to be the direction shown in FIGS.
Since the through hole 3b serves as a passage leading to the inside and the outside of the wall surface 1, the entrance and exit of people and articles are carried out through the through hole 3b. The refractory layer 3a in the above embodiment is formed using, for example, a material that forms the heat insulating layer of the safe door. The heat insulating layer 1c uses a heat insulating material such as rock wool or glass wool. As a result, the center of gravity of the door 3 is deviated in the thickness direction of the door 3, and thus, as described above, this deviation is caused.
It may be used as the automatic rotation force of.

[Effect of device]

The present invention is as described above, and as a door of a refractory shelter surrounded by a wall with a large thickness formed in an appropriate floor such as a skyscraper, the door is formed into a cylindrical shape that rotates within the thickness of this wall. At the same time, a through-hole is formed at the center of the cylindrical body as an entrance and exit, and this door is attached to a flat cylindrical door mounting portion formed within the thickness of the wall surface, so that the following effects are obtained.

Since the door of the present invention fits within the thickness of the wall on which it is installed, it does not project outside the wall, and therefore it is convenient and unobtrusive when installing the fireproof shelter inside the building. is there.

When the door of the present invention is closed, it is almost integrated with the wall surface in the wall surface on which it is mounted, its thickness, and the layer structure in the thickness direction. There is very little risk that the fire resistance of the fireproof shelter will be reduced.

In addition, the door can be opened and closed easily by rotating the door 90 degrees by connecting the inside of the wall to the inside and outside by simply rotating the door by 90 degrees. No extra space is required for this opening / closing operation, which facilitates quickness of the opening / closing operation.

As described above, the present invention is extremely useful as a door for a fireproof shelter.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an example of a door for a refractory shelter according to the present invention in an open state, FIG. 2 is a plan sectional view showing a door in the same closed state, FIG.
The figure is a front cross-sectional view in the open state, and FIG. 4 is a temperature-time diagram showing an example of the relationship between the spread time of fire and the temperature rise. 1 ... Wall surface, 1a ... Fireproof layer, 1b ... Air layer, 1c ... Thermal insulation layer, 2 ...
Opening part, 3 ... Door, 3a ... Fireproof layer, 3b ... Through hole, 3c ... Insulation layer, 4 ... Fireproof and heat resistant seal part

Claims (1)

[Scope of utility model registration request] 1. A refractory shelter having a predetermined thickness is provided with an air layer having a front-rear width of a passage width and a required height in parallel with the wall surface, and the wall surface is viewed from a plane. A vertical cylindrical shape having a diameter larger than the thickness of the wall surface, and an opening having a height larger than the total height of the air layer is formed, and an outer diameter that substantially matches the planar shape of the opening is formed in the opening. A door having a height substantially equal to the front and rear width of the air layer, the through hole being aligned with the air layer when the column is rotated. A door for a fire-resistant shelter, which has a body that can be rotated and fixed.