JPH06233832A - Pressurized smoke-proof system - Google Patents

Abstract

PURPOSE:To provide a pressurized smoke-proof system capable of surely and stably generating the state that an attached room zone is kept at a higher pressure than that of a corridor zone and reducing the facility cost. CONSTITUTION:This pressurized smoke-proof system is provided with a pressurizing fan mechanism 3b forcefully guiding the outside air to an attached room zone 3 with a fan and a pressure-sensitive damper mechanism 5 automatically opened by the prescribed pressure difference when the pressure of the attached room zone 3 is higher than the pressure of a corridor zone 2 by a prescribed value or above to communicate both zones 2, 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a pressurized smoke prevention system for protecting evacuation routes such as staircases, attached rooms and corridors from smoke such as fire in buildings such as high-rise buildings.

[0002]

2. Description of the Related Art A pressurized smoke prevention system is a smoke control system that replaces the smoke exhaust system that sucks out the smoke that has entered the evacuation route to the outside. It is a system that pressurizes the staircase zone side to actively prevent smoke from entering the evacuation route.
The number of buildings using this pressurized smoke prevention system is increasing in Japan.

Three typical configurations of a conventional pressurized smoke prevention system are shown in FIGS. 1 (A) (B) (C). As is well known, the annex room zone 3 serves as a buffer zone for the living room zone 1, the corridor zone 2, and the evacuation staircase zone 4.
Is set. In FIG. 1 (A), smoke exhaust fan mechanisms 1a, 2a, and 3a for sucking out smoke are provided in the living room zone 1, the corridor zone 2, and the annex room zone 3, respectively, and in the corridor zone 2 and the annex room zone 3, respectively. Pressurizing fan mechanisms 2b and 3b are provided for pumping and introducing outside air. 1B is an example in which the smoke exhaust fan mechanism 2a in the corridor zone 2 is eliminated, and FIG. 1C is an example in which the smoke exhaust fan mechanism 3a in the annex room zone 3 is also eliminated.

When a fire occurs in the living room zone 1, the smoke exhaust fan mechanism 1a is activated and the pressure fan mechanisms 2b and 3b are activated (the smoke exhaust fan mechanisms 2a and 2b are activated depending on the situation). This pressurizes the corridor zone 2 and the ancillary room zone 3 against the fire chamber and prevents smoke from the fire chamber from entering the evacuation route leading to the staircase zone 4.

[0005]

Problems to be Solved by the Invention FIGS. 1 (A) and 1 (B)
As shown in (C), in the conventional pressurized smoke prevention system,
The corridor zone 2 and the annex room zone 3 are provided with independent pressurizing fan mechanisms 2b and 3b, respectively, to pressurize both zones separately. Originally, in the pressurized smoke prevention system, the pressure in the annex room zone 3 should be higher than that in the corridor zone 2, but in the conventional system, the pressure level may be reversed depending on the situation. In other words, the pressure in the ancillary room zone 3 may change depending on the opening / closing status of many doors partitioning each zone and the malfunction of the fan mechanism.
A lower state may occur, and smoke that has entered the corridor zone 2 may spread to the annex room zone 3 at an accelerated rate.

As described above, the pressure fan mechanism 2b of another system is used.
In 3 and 3b, in addition to the problem that it is difficult to stably generate a predetermined pressure difference between the corridor zone 2 and the annex room zone 3, equipment costs are high because separate pressure fan mechanisms are provided in both zones. The problem of becoming

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to reliably and stably create a situation in which the auxiliary room zone is set to have a higher pressure than the corridor zone, and the equipment cost is reduced. It is to provide a pressurized smoke prevention system capable of performing the above.

[0008]

Therefore, in the present invention, a pressurizing fan mechanism for pumping and introducing outside air by a fan is provided in the attached room zone, and a pressure sensitive damper mechanism is provided between the attached room zone and the corridor zone. When the pressure in the annex room zone is higher than the pressure in the corridor zone by a predetermined value or more, the pressure-sensitive damper mechanism is opened by the pressure difference and the annex room zone and the corridor zone are communicated with each other.

[0009]

[Operation] When the pressurizing fan mechanism in the ancillary room zone operates when a fire occurs, the ancillary room zone is pressurized by the introduction of outside air,
When the pressure of the auxiliary room zone becomes higher than the pressure of the corridor zone by a predetermined value or more, the pressure-sensitive damper mechanism automatically opens, the auxiliary room zone and the corridor zone communicate with each other, and the pressure of the auxiliary room zone becomes the corridor zone. Reach If the pressure in the corridor zone becomes high for some reason and the pressure difference with the annex room zone becomes less than the predetermined value, the pressure-sensitive damper mechanism automatically closes.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows the basic construction of a pressurized smoke prevention system according to the present invention. Same as Figure 1, Living Room Zone 1
The annex room zone 3 is set as a buffer zone between the corridor zone 2 and the evacuation staircase zone 4. A smoke exhaust fan mechanism 1a for sucking out smoke is provided in the living room zone 1. The pressurizing fan mechanism 3b for pumping and introducing the outside air is provided only in the annex room zone 3, and the corridor zone 2 is not provided with the pressurizing fan mechanism.

At the boundary between the corridor zone 2 and the annex room zone 3, a relief damper 5 as the pressure-sensitive damper mechanism is provided. The pressure of the auxiliary room zone 3 acts on the inlet side of the relief damper 5, and the pressure of the corridor zone 2 acts on the outlet side. When the pressure difference between the inlet side and the outlet side exceeds a set value (for example, about 5 pascals), the relief damper 5 automatically opens due to the pressure difference, and the annex room zone 3 and the corridor zone 2 communicate with each other.

As is clear from the above description, when a fire occurs in the living room zone 1, the smoke exhaust fan mechanism 1a is activated and the pressure fan mechanism 3b is activated. As a result, the outside air is pumped into the auxiliary room zone 3 to pressurize the auxiliary room zone 3, and when the pressure in the auxiliary room zone 3 becomes higher than the pressure in the corridor zone 2 by a predetermined value or more, the pressure-sensitive damper mechanism 5 automatically operates. Open, the annex zone 3 and the corridor zone 2 communicate,
The pressure in the annex zone 3 extends to the corridor zone 2. When the pressure in the corridor zone 2 becomes high for some reason, and the pressure difference between it and the annex room zone 3 becomes less than the predetermined value, the pressure-sensitive damper mechanism 5 automatically closes. In this way, the ancillary room zone 3 is reliably kept at a higher pressure than the corridor zone 2, and the original operation of the pressurized smoke prevention system is stably exhibited.

FIG. 3 shows a concrete example of a building employing the pressurized smoke prevention system of the present invention. In this example, the standard floor of a high-rise building has a two-dimensional structure in which two corridors 10 and 20 are arranged in parallel, offices 11 and 12 face corridor 10, and offices 21 and 22 face corridor 20. is doing. At both ends of the corridor 10, an auxiliary room A and an auxiliary room B are arranged and connected to the evacuation steps A and B, respectively. At the both ends of the corridor 20, there are a C-attached room and a D-attached room, which are connected to the evacuation C stairs and D stairs, respectively. Each of the auxiliary chambers A to D is provided with the above-described pressurizing fan mechanism 3b, and each of the auxiliary chambers and the corridor 10 or 20 are connected by the relief damper 5 described above.

[0014]

As described in detail above, the pressurized smoke prevention system of the present invention is provided with a pressurizing fan mechanism for pumping and introducing outside air with a fan in the annex room zone, and the pressure of the annex room zone is the corridor zone. If a pressure-sensitive damper mechanism is provided that automatically opens when the pressure is higher than the specified value by the pressure difference and connects both zones, the pressure fan mechanism is activated in the event of a fire. Is pressurized, and when the pressure becomes sufficiently high, the pressure-sensitive damper mechanism automatically opens and the corridor zone is also pressurized. However,
The pressure in the corridor zone is kept lower than in the annex zone. Therefore, it is possible to stably and reliably realize the smoke proof action as originally intended by the pressurized smoke proof system. Further, since the pressure fan mechanism is provided only in the attached room zone, the equipment cost is lower than that of the conventional equipment.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing three typical configurations of a conventional pressurized smoke prevention system.

FIG. 2 is a schematic diagram showing the principle configuration of the pressurized smoke prevention system of the present invention.

FIG. 3 is a plan view of a building employing the pressurized smoke prevention system of the present invention.

[Explanation of symbols]

 1 Living Room Zone 2 Corridor Zone 3 Annex Room Zone 4 Stair Room Zone 5 Relief Damper (Pressure Sensitive Damper Mechanism) 3b Pressurized Fan Mechanism

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[Procedure amendment]

[Submission date] May 14, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Patent application title: Pressurized smoke prevention system

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a pressurized smoke prevention system for protecting evacuation routes such as staircases, attached rooms and corridors from smoke such as fire in buildings such as high-rise buildings.

[0002]

2. Description of the Related Art A pressurized smoke prevention system is a smoke control system that replaces the smoke exhaust system that sucks out the smoke that has entered the evacuation route to the outside. It is a system that pressurizes the staircase zone side to actively prevent smoke from entering the evacuation route.
The number of buildings using this pressurized smoke prevention system is increasing in Japan.

[0003]

However, the conventional
In the system, the pressurized air inlet is installed separately in the annex and the corridor.
Or restricting the pressure inlet to the attached room only.
However, especially in the latter case, there is no smoke in the corridor.
Regardless of which one, the pressure in the corridor becomes unstable
There was a tendency.

[0004] The present invention has been made in view of the conventional problems described above, and an object, and the corridor zone over down-Fushitsu zone
In addition to making the pressure higher than in the fire room , it is possible to reliably and stably create a situation where the pressure in the annex room zone is higher than that in the corridor zone, and the equipment cost can be reduced. To provide.

[0005]

Therefore, in the present invention, a pressurizing fan mechanism for pumping and introducing outside air by a fan is provided in the attached room zone, and a pressure sensitive damper mechanism is provided between the attached room zone and the corridor zone. When the pressure in the annex room zone is higher than the pressure in the corridor zone by a predetermined value or more, the pressure sensitive damper mechanism is opened by a predetermined pressure difference so that the annex room zone and the corridor zone communicate with each other.

[0006]

[Operation] When the pressurizing fan mechanism in the ancillary room zone operates when a fire occurs, the ancillary room zone is pressurized by the introduction of outside air,
When the pressure of the auxiliary room zone becomes higher than the pressure of the corridor zone by a predetermined value or more, the pressure-sensitive damper mechanism automatically opens, the auxiliary room zone and the corridor zone communicate with each other, and the pressure of the auxiliary room zone becomes the corridor zone. Reach If the pressure in the corridor zone becomes high for some reason and the pressure difference with the annex room zone becomes less than the predetermined value, the pressure-sensitive damper mechanism automatically closes.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows the basic construction of a pressurized smoke prevention system according to the present invention. Same as Figure 1, Living Room Zone 1
The annex room zone 3 is set as a buffer zone between the corridor zone 2 and the evacuation staircase zone 4. A smoke exhaust fan mechanism 1a for sucking smoke is provided in the living room zone 1 and an air vent is provided when the smoke is stopped.
Is prepared separately . The pressurizing fan mechanism 3b for introducing the outside air under pressure is provided only in the annex room zone 3, and the corridor zone 2
No pressure fan mechanism is provided in the.

The pressure-sensitive damper mechanism 5 is provided at the boundary between the corridor zone 2 and the annex room zone 3. This pressure sensitivity
The pressure in the auxiliary chamber zone 3 acts on the inlet side of the damper mechanism 5 ,
The pressure of the corridor zone 2 acts on the exit side. When the pressure difference between the inlet side and the outlet side exceeds a set value (for example, about 5 pascals), the pressure sensitive damper mechanism 5 automatically opens due to the pressure difference, and the annex room zone 3 and the corridor zone 2 communicate with each other.

As is clear from the above description, when a fire occurs in the living room zone 1, the smoke exhaust fan mechanism 1a is operated and the pressurizing fan mechanism 3b is operated. As a result, the outside air is pumped into the auxiliary room zone 3 to pressurize the auxiliary room zone 3, and when the pressure in the auxiliary room zone 3 becomes higher than the pressure in the corridor zone 2 by a predetermined value or more, the pressure-sensitive damper mechanism 5 automatically operates. Open, the annex zone 3 and the corridor zone 2 communicate,
The pressure in the annex zone 3 extends to the corridor zone 2. When the pressure in the corridor zone 2 becomes high for some reason, and the pressure difference between it and the annex room zone 3 becomes less than the predetermined value, the pressure-sensitive damper mechanism 5 automatically closes. In this way, the inlet for pressurized air is
Zone 3 and corridor zone, although there is only one in area 3
Both 2 are kept under pressure and the annex zone 3 is a corridor
Since the high pressure state is reliably maintained from the zone 2, the original operation of the pressurized smoke prevention system can be stably exhibited.

[0010]

As described in detail above, the pressurized smoke prevention system of the present invention is provided with a pressurizing fan mechanism for pumping and introducing outside air with a fan in the annex room zone, and the pressure of the annex room zone is the corridor zone. Since a pressure-sensitive damper mechanism that automatically opens with a predetermined pressure difference and communicates both zones when it is higher than the pressure of above by a predetermined value is provided, by operating the pressure fan mechanism in the event of a fire, When the zone is pressurized and the pressure becomes sufficiently high, the pressure-sensitive damper mechanism automatically opens and the corridor zone is also pressurized. However, the pressure in the corridor zone is kept lower than in the annex zone. Therefore,
The pressurized smoke prevention system can stably and reliably realize the smoke prevention effect as originally intended. Further, since the pressure fan mechanism is provided only in the attached room zone, the equipment cost is lower than that of the conventional equipment.

[Brief description of drawings]

FIG. 1 shows the basic configuration of a pressurized smoke prevention system of the present invention .
It is a schematic diagram which shows.

[Explanation of symbols] 1 living room zone 2 corridor zone 3 auxiliary room zone 4 staircase zone 5 pressure-sensitive damper mechanism 3b pressure fan mechanism

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Delete

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Delete

Claims (1)

[Claims] 1. A pressurizing fan mechanism for pumping and introducing outside air into a supplementary room zone, which is a buffer zone between a living room and a corridor zone and a staircase room zone of an evacuation route, and between the supplementary room zone and the corridor zone. And a pressure-sensitive damper mechanism that is opened by the pressure difference when the pressure in the annex room zone is higher than the pressure in the corridor zone by a predetermined value or more to communicate the annex room zone and the corridor zone. A pressurized smoke prevention system characterized in that