JP2001340476A - Structure of fire protection section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the structure of a fire protection section with little loss of the pressure of pressed air in the section by an air supply system, and therefore, excellent in the smoke protection effect on the upper floors, and safe enough even for a physically challenging person to easily take refuge in the fire protection section. SOLUTION: The fire protection section 1 is sectioned with a fire door 3, and refuge steps 2 and an elevator shaft 6 are mounted inside the fire protection section. The air supply system 7 for pressing the inner air is mounted in the elevator shaft 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a fire protection section provided for evacuation in the event of a fire in various buildings.

[0002]

2. Description of the Related Art As is well known, in various buildings, it is required by law to provide fire protection compartments for each fixed area in order to prevent the spread of fire during a fire and to secure an evacuation route. . FIG. 3 shows the structure of a conventional fire protection compartment of this type. In the figure, reference numeral 10 denotes a fire protection compartment provided in a pit shape over upper and lower floors.

[0003] Evacuation stairs 11 are provided in the fire protection compartment 10 over the upper and lower floors, and each floor is provided with a fire door 12 for partitioning the fire protection compartment 10 from the outside.
Further, a pressurized air fan 13 is provided at the lowest floor of the fire protection compartment 10 to increase the pressure in the compartment and prevent the invasion of smoke.

[0004]

In the conventional fire protection section 10 having the above-described structure, the rising and tread of the evacuation stairs 11 flow with respect to the pressurized air supplied from the pressurized air fan 13. Road resistance, and as a result, as you go upstairs, the pressure of pressurized air decreases due to pressure loss,
There is a problem that the effect of preventing smoke intrusion is reduced.

Further, according to the fire prevention section 10, it is difficult for a physically handicapped person P who uses a wheelchair or the like to evacuate from the evacuation stairs 11, and improvement is demanded in view of recent demand for barrier-free. I was

The present invention has been made in view of the above circumstances, and has a small pressure loss of pressurized air in a compartment due to an air supply facility, and therefore has an excellent smoke prevention effect even on an upper floor, and is easily accessible to physically handicapped persons. It is an object of the present invention to provide a fire-prevention compartment structure that can be evacuated to a safe place and has excellent safety.

[0007]

According to a first aspect of the present invention, there is provided a fire-prevention compartment structure defined by a fire-prevention door, an evacuation staircase and an elevator shaft provided inside the fire-prevention compartment. An air supply device for pressurizing the internal air is provided.

According to the first aspect of the present invention, since the elevator shaft is provided in the compartment and the air supply equipment is provided in the elevator shaft, the elevator shaft is used as a duct for pressurized air in the fire prevention compartment. This can reduce the pressure loss of the pressurized air due to the rise and tread of the evacuation stairs as in the related art, so that a desired smoke prevention effect can be obtained even on the upper floor.

In addition, since the elevator shaft is provided in the compartment, it can be used as it is to move up and down floors in normal times, improving convenience, and is used for evacuation of physically handicapped persons in case of fire. As a result, the safety of the building can be improved.

[0010]

1 and 2 show one embodiment of the structure of a fire protection compartment according to the present invention.
Is a fire compartment provided in the building. Evacuation stairs 2 are provided in the fire protection compartment 1 over the upper and lower floors as in the conventional case, and a fire door 3 that partitions the fire protection compartment 1 from the outside is provided on each floor. Further, an elevator shaft 6 in which an elevator 5 is incorporated so as to be able to move up and down is arranged at a corner of the landing 4 of the evacuation stairs 2 in the fire protection compartment 1. Here, the elevator 5 is driven by an independent power source or a main power source in this building and a switchable emergency power source. A pressurized air supply fan (air supply equipment) 7 for supplying pressurized air to the inside is provided at the lowermost portion of the elevator shaft 6.

In the structure of the fire prevention section having the above-described structure, by driving the pressurized air supply fan 7 in an emergency such as a fire, the pressurized air is supplied into the elevator shaft 6 and the elevator on each floor is raised. By increasing the pressure of the entire fire protection compartment 1 from the door, intrusion of smoke into the fire protection compartment 1 is prevented. At this time, according to the structure of the fire prevention section, the elevator shaft 6 can be used as a duct for pressurized air in the fire prevention section 1, so that the pressurized air is raised by the kick-up and tread of the evacuation stairs as in the related art. Pressure loss can be reduced, so that a desired smoke prevention effect can be obtained even on an upper floor.

Further, since the elevator shaft 6 is provided in the fire protection compartment 1, the elevator 5 is driven by the independent power source or the main power source of the building in normal times, so that the elevator 5 can be used as it is for moving up and down floors. Can,
The convenience of the building is improved. And in the event of a fire,
By driving the elevator 5 by the independent power source or the switched emergency power source, the elevator 5 can be used for evacuation of a disabled person P using a wheelchair, and as a result, the safety of the building can be further improved.

[0013]

As described above, according to the structure of the fire protection compartment according to the first aspect, the air supply equipment is provided on the elevator shaft provided in the compartment, so that the elevator shaft is connected to the fire protection compartment. By using it as a duct for compressed air, it is possible to easily increase the pressure in the fire protection compartment up to the upper floor, so that the desired smoke prevention effect can be obtained even on the upper floor, It can be used to move up and down floors, improving convenience, and in the event of a fire, it can be used for evacuation of physically disabled people etc., which can contribute to improving the safety of buildings The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a longitudinal sectional view showing a conventional fire protection compartment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire compartment 2 Evacuation stairs 3 Fire door 5 Elevator 6 Elevator shaft 7 Pressurized air supply fan (air supply equipment)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E185 AA09 BA19 CA08 CB09 CC62 DA13 3F304 CA02 DA03 EB25 3F305 BA21

Claims (1)

[Claims] 1. A fire protection compartment defined by a fire door, wherein an evacuation staircase and an elevator shaft are provided inside, and an air supply device for pressurizing internal air is provided on the elevator shaft. Structure.