KR101543341B1 - Emergency exit door with opening force securing apparatus, and overpressure exhaust damper system having the same - Google Patents

Abstract

An opening force securing device capable of securing a predetermined opening force to easily open the evacuation door of the evacuation room which is pressurized when the evacuator evacuates from the room to the evacuation room in the event of a fire in a high- An evacuation door and an air supply pressurizing system with the evacuation door are provided. An evacuation door with an opening force securing device is an evacuation door installed between the indoor and the evacuation room of each floor of a high-rise building equipped with a supply air pressure system. In order to evacuate from the indoor side to the evacuation room, A door handle for opening; An interlocking device installed inside the evacuation door to be horizontally moved or rotated in conjunction with the door handle; A jig connected to the interlocking device and transmitting a force corresponding to horizontal movement or rotation of the interlocking device; And a gap that serves as a passage through which the air supply pressurized air in the evacuation room leaks to the indoor side is formed and the evacuation door is rotated by the jig to secure a predetermined opening force, And an opening force securing device for relieving the pressure of the evacuation room.

Description

TECHNICAL FIELD [0001] The present invention relates to an evacuation door having an opening force assisting device and an air supply pressurizing system having the same. [0001] The present invention relates to an emergency evacuation door,

The present invention relates to an evacuation door of an air supply pressurizing system, and more particularly, to an evacuation door with an opening force securing device for allowing a evacuator to open the evacuation door easily when a fire occurs in a high- And an air supply pressurizing system having the same.

Generally, as cities become more sophisticated and integrated, large buildings, high-rise buildings, and complexes are rapidly advanced, and buildings that are vulnerable to fire are increasing. Thus, there is a desperate need for effective fire prevention measures for safety of life.

At this time, the smoke generated from the fire contains the high temperature toxic gas, and it occupies most of the human life caused by the fire. For example, in Daegu Subway case and Busan Seomyeon Karaoke Fire case, it was found that the fire damage caused by smoke was 50% larger than that caused by direct flame exposure. As a result, A smoke inflow prevention device such as an air supply pressurization system for preventing inflow is mandatory. Especially, it is emphasized the importance of the smoke control system for control of smoke, which is a major threat to evacuation and fire fighting activities in the event of a fire and poses the greatest threat to human life safety.

At home and abroad, the evacuation staircase ventilation system is installed to prevent the penetration of smoke to the escape staircase in case of fire in high-rise buildings and to secure a safe evacuation route. In Korea, the fire safety standard NFSC 501A "Staircase of the special evacuation staircase, Fire safety standards for ventilation systems ", the following standards are to be met.

First, by supplying outdoor fresh air to the ventilation zone, the pressure of the ventilation zone should be higher than the indoor space outside the ventilation zone, while maintaining a constant pressure difference (differential pressure) so that smoke can not penetrate into the research zone from inside the building do.

Secondly, when the pressure difference is too large, it is difficult to open the door to the evacuator, so that the pressure required to open the door is kept below a predetermined level (i.e., the overpressure is not applied to the subsidiary chamber) Should be.

Third, when the doors of the smokestack area are temporarily opened for evacuation, outdoor air should be replenished into the smokestack area to maintain the smoke wind speed.

In order to satisfy the above-mentioned fire safety standards, a method commonly used in Korea is to supply air to an auxiliary room located between a room and a staircase by using a blowing fan and a vertical airflow, A ventilation system is disclosed.

FIG. 1 is a perspective view of a building in which a supply air pressure and ventilation system according to a conventional art is constructed, and FIGS. 2 (a) and 2 (b) are a plan sectional view and a longitudinal sectional view, respectively, of a building in which a supply air pressure and pressure ventilation system according to a conventional art is constructed.

1, 2A and 2B, an air supply and pressure ventilation system 1 according to the prior art uses a vertical airflow 20 passing through a blowing fan 10 and a cavity 70, Is a ventilation system that supplies outside air through an air supply damper 30 provided in an antechamber 40 between an indoor 60 and an office corridor and a staircase 50 to thereby increase the air pressure in the antechamber 40.

In this air supply and pressure ventilation system, the auxiliary chamber 40 is set as the ventilation zone and a differential pressure equal to or higher than the reference value is maintained between the auxiliary chamber 40 and the indoor chamber 60 to prevent smoke penetration into the auxiliary chamber 40 from the fire- . Further, in order to keep the differential pressure equal to or higher than a predetermined standard for preventing smoke penetration and to make the opening force of the door 80 less than a certain standard so that it is not difficult for the occupant to open the door 80 for evacuation, The differential pressure between the inside chamber 60 and the supporting chamber 40 should be adjusted between the lower limit value and the upper limit value to simultaneously satisfy the differential pressure maintenance.

When the door 80 of the subsidiary room is temporarily opened for evacuation in the supply air pressure ventilation system, as shown in FIGS. 2A and 2B, the air-conditioned wind speed is maintained in the indoor 60 direction from the subsidiary room 40 So that indoor smoke can not penetrate into the ancillary room 40. For example, the standards for the differential pressure, door opening force, and smoke wind speed specified in the fire safety standard NFSC 501A are as shown in Table 1. Table 1 shows the fire safety standards of NFSC 501A.

However, in order to safely evacuate the residents of high-rise buildings, super high-rise buildings and multi-use buildings, the conventional supply air pressure ventilation system for preventing smoke intrusion into the staircase has been developed in order to prevent smoke intrusion prevention required by domestic fire safety standards, It is difficult to satisfy the closing power of the fire door which can be evacuated at the same time. In order to satisfy the smoke wind speed, it is necessary to increase the differential pressure. However, when the differential pressure is increased, the opening force (or closing force) is exceeded and the opening force of 110N or less is not satisfied. In order to satisfy the opening force of 110N or less, , There is a problem that the smoke leakage wind velocity and the differential pressure of the non-open layer (more than 70% of the reference differential pressure) which can prevent the smoke from entering the subsidiary room and the staircase are lowered.

On the other hand, in emergency situations such as hospitals, buildings, public offices, schools, hotels, and theaters, an emergency gate or a fire door is installed so that a person in the room can quickly escape to the outside when an emergency such as a disaster or a fire occurs A touch operation type panic device (or a panic bar) is used to allow the door to be easily opened from the inside of the room, and to pass through the door without obstacle.

3 is a view illustrating an evacuation door in which a general panic device is installed.

As shown in FIG. 3, the panic device 81 includes a touch bar that is press-fitted and restored by a spring action, and has a base bar installed inside the evacuation door 80 and a state of being connected to the touch bar at one end of the base bar And a door handle provided on the outside of the door in a state of being connected to the door lock device. Here, reference numeral 82 denotes a rotary type circular handle door handle provided on the side of the evacuation room.

However, even in the case of an evacuation door provided with a panic device according to the related art, the evacuation door can not be opened if the pressure of the evacuation chamber is excessively increased because the opening force of the evacuation door is not directly secured.

Korean Patent No. 10-1303332 filed on Jan. 15, 2013, entitled "Relief damper and supply air pressure ventilation system using the same" Korean Patent No. 10-874595 filed on August 17, 2007, entitled "Panic Device" Korean Registered Patent No. 10-888723 filed on September 18, 2007, entitled "Auxiliary opening force structure for fire doors" Korean Patent No. 10-957791 filed on Apr. 1, 2008, entitled "Closure Mechanism for Fire Protection Door" Korean Registered Utility Model No. 20-0444890 (filed on October 16, 2007), design title: "Opening device for fire doors"

In order to solve the above problems, an object of the present invention is to provide a high-rise building having an air supply pressurization system, Which is capable of securing an opening force of the evacuation door, and an air supply pressurizing system equipped with the evacuation door.

As a means for achieving the above technical object, an evacuation door equipped with an opening force securing device according to the present invention is an evacuation door installed between an indoor space and an evacuation room of each floor of a high-rise building provided with an air supply pressurization system, A door handle for allowing the evacuator to open the evacuation door from the indoor side to evacuate to the evacuation room; An interlocking device installed inside the evacuation door to be horizontally moved or rotated by being interlocked with the door handle; A jig connected to the interlocking device and transmitting a force corresponding to horizontal movement or rotation of the interlocking device; And a door which is mounted on the upper or lower part of the evacuation door and which serves as a passage through which the air supply pressurized air in the evacuation room leaks to the indoor side is formed and the evacuation door is moved by the jig And an opening force securing device that rotates to reduce the pressure of the evacuation room through the gap.

Here, the opening force securing device is a cylindrical steel bar provided with a gap serving as a passage through which the air supply pressurized air in the evacuation room can leak to the inside of the room, and the opening force securing device is provided with the opening / Characterized in that the evacuation door secures a predetermined opening force by reducing the pressure of the evacuation chamber.

Here, when the evacuator operates the door handle for a predetermined time in a state where the difference pressure between the evacuation chamber and the inside of the house is kept at 40 Pa or more, the evacuation door is opened to the opening force of 110N or less The difference between the evacuation room and the inside of the room is temporarily reduced.

Here, when the evacuator escapes from the inside of the cabin to the evacuation chamber and the evacuation door is closed, as the door handle returns to the original position by the elastic force, the opening force securing device returns to the original position, And the differential pressure of the pressure difference increases again to 40 Pa or more.

Here, the door handle may be a panic device or a rotary circular handle.

In the case where the door handle is a panic device, when the escape person pushes the panic device and operates the interlock device, the interlock device operates in conjunction with the panic device, and the jig connected to the interlock device The opening force of the evacuation door is secured.

Here, when the door handle is a rotary circular handle, when the escape person rotates the rotary circular handle, the interlocking device rotates in conjunction with the rotation of the rotary circular handle, and the opening force is secured by the jig connected to the interlocking device And the opening force of the evacuation door is secured by the rotation of the device.

The evacuation door equipped with the opening force securing device according to the present invention further includes a sealing device for sealing the outer circumferential surface of the opening force securing device so that the pressure of the evacuation room is not leaked to the inside of the room when the opening force securing device is closed As shown in FIG.

As another means for achieving the above-mentioned technical object, an air supply pressurization system having an evacuation door equipped with an opening force securing device according to the present invention is characterized in that an air supply pressurization system A fire alarm system comprising: a fire detection sensor installed in each floor of a high-rise building for detecting a fire; A blower for supplying air to the evacuating chambers of each of the layers through a vertical air flow when the fire is detected by the fire detection sensor; A blower controller for controlling the blowing amount of the blower for supplying air so that the evacuation chamber can maintain the ventilation pressure; A supply damper which is opened to provide the air supplied through the vertical airflow to the evacuation chambers of the respective layers; And an escape chamber provided between the indoor and the evacuation room so that the evacuation of each floor can be evacuated from the inside of the room to the evacuation room and is operated under a predetermined opening force corresponding to the ventilation pressure of the evacuation room A door handle for opening the evacuation door from the indoor side so as to evacuate the evacuation door from the indoor side to the evacuation room; An interlocking device installed inside the evacuation door to be horizontally moved or rotated by being interlocked with the door handle; A jig connected to the interlocking device and transmitting a force corresponding to horizontal movement or rotation of the interlocking device; And a door which is mounted on the upper or lower part of the evacuation door and which serves as a passage through which the air supply pressurized air in the evacuation room leaks to the indoor side is formed and the evacuation door is moved by the jig And an opening force securing device that rotates to reduce the pressure of the evacuation room through the gap.

According to the present invention, it is possible to secure a predetermined opening force in order to easily open the evacuation door of the evacuation room which is pressurized when the evacuator evacuates from the inside to the evacuation room in a high-rise building where a supply air pressure system is installed. Accordingly, the evacuation door can be smoothly opened and closed with respect to a differential pressure of 40 Pa or more between the evacuation room and the inside of the room.

1 is a perspective view of a building in which a supply air pressure ventilation system according to the prior art is constructed.
2A and 2B are a plan sectional view and a longitudinal sectional view of a building in which the supply air pressure ventilation system according to the related art is constructed, respectively.
3 is a view illustrating an evacuation door in which a general panic device is installed.
4A and 4B are views for explaining the securing of the opening force of the evacuation door equipped with the opening force securing device according to the embodiment of the present invention, respectively.
5 is a view showing an evacuation door equipped with an opening force securing apparatus according to an embodiment of the present invention.
6 is a view for explaining a concrete operation of an evacuation door equipped with an opening force securing apparatus according to an embodiment of the present invention.
7 is a view for explaining an air supply pressurization system having an evacuation door equipped with an opening force securing apparatus according to an embodiment of the present invention.
8 is a flowchart illustrating a method of controlling an air supply pressurization system having an evacuation door equipped with an opening force securing apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Evacuation door (100) equipped with opening force securing device]

4A and 4B are diagrams for explaining the securing of the opening force of the evacuation door equipped with the opening force securing device according to the embodiment of the present invention, wherein FIG. 4A shows a state before the opening force securing device is rotated, Shows a state in which the opening force securing device is rotated. 5 (a) is a front view of an evacuation door equipped with an opening force securing device, and Fig. 5 (b) shows an opening force Fig. 5C is a side view showing a state in which the opening force securing device is rotated. Fig. 6 is a view for explaining a concrete operation of an evacuation door equipped with an opening force securing device according to an embodiment of the present invention.

4A, 4B and 5, an evacuation door 100 equipped with an opening force securing device according to an embodiment of the present invention is installed in a room between a room and a refuge room of each floor of a high- A door handle 120, an interlock device 130, a jig 140, and a sealing device 150. The opening device 120 includes a door handle 120,

The door handle 120 is for opening the evacuation door 100 from the indoor 310 side to evacuate from the indoor 310 side to the evacuation room 320. The door handle 120 is a panic device Panic bar) or a rotary circular handle, but is not limited thereto.

The interlock device 130 is installed inside the evacuation door 100 to interlock with the door handle 120 to be horizontally moved or rotated. For example, the interlock device 130 may be a bearing.

The jig 140 is connected to the interlock device 130 and transmits a force corresponding to horizontal movement or rotation of the interlock device 130. [ For example, the jig 140 may be a steel wire connected between the interlock device 130 and the opening force securing device 110.

4A and 4B, the opening force securing apparatus 110 is mounted on the upper or lower portion of the evacuation door 100, and the supply air of the evacuation room 320 is supplied to the indoor 310 The evacuation door rotates by the jig 140 to secure the evacuation chamber 320 to the evacuation chamber 320 through the gap A so that the evacuation gate can secure a predetermined opening force, Lt; / RTI >

Specifically, the opening force securing device 110 is a cylindrical steel bar provided with a gap serving as a passage through which the pressurized air in the evacuation room 320 can leak to the indoor 310 side, The evacuation door 110 can secure a predetermined opening force by reducing the pressure of the evacuation chamber 320 during the time for operating the door handle 120. [ 6, when the escape person operates the door handle 120 for a predetermined time while the differential pressure between the escape chamber 320 and the in-house 310 is maintained at 40 Pa or more, The differential pressure between the evacuation room 320 and the in-house 310 is temporarily reduced by the opening force securing device 110 so that the door 100 can be opened with an opening force of 110N or less.

The sealing device 150 may be configured such that when the opening force securing device 110 is closed the pressure of the evacuation chamber 320 does not leak to the indoor 310 side, The outer peripheral surface of the force securing device 110 is sealed.

Subsequently, when the evacuator escapes from the indoor 310 to the evacuation room 320 and the evacuation door is closed, as the door handle 120 returns to the original position by the elastic force, (110) returns to its original position, and the differential pressure between the evacuation room (320) and the indoor space (310) rises to 40 Pa or more. Accordingly, when the door handle 120 is rotated to the original position, the opening force securing device 110 is also closed. When the evacuation door 100 is closed, the pressure of the evacuation chamber 320 is transmitted to the indoor (or living) .

In the case where the door handle 120 is a panic device in the evacuation door 100 equipped with the opening force securing device according to the embodiment of the present invention, when the escape person pushes the panic device and operates the panic device, The interlock device 130 operates in conjunction with the interlock device 130 and the opening force of the escape door 100 is secured by the rotation of the opening force securing device 110 by the jig 140 connected to the interlock device 130.

When the door handle 120 is a rotary type circular handle, when the escape person rotates the rotary type circular handle, the interlock device 130 rotates in conjunction with the rotation of the rotary type circular handle, The opening force of the evacuation door 100 is secured by the rotation of the opening force securing device 110 by the jig 140 connected to the door.

According to the evacuation door 100 equipped with the opening force securing device according to the embodiment of the present invention, when the evacuator evacuates from the inside to the evacuation chamber when a fire occurs in a high-rise building equipped with an air supply pressurization system, A predetermined opening force can be ensured for easy opening.

[Supply pressurizing system (200) having an evacuation door (100) secured with an opening force)

7 is a view for explaining an air supply pressurization system having an evacuation door equipped with an opening force securing apparatus according to an embodiment of the present invention, Fig. 2 is a flowchart showing a control method of an air supply pressurizing system having a door.

Referring to FIG. 7, an air supply pressurization system 200 having an evacuation door equipped with an opening force securing device according to an embodiment of the present invention is configured to apply a ventilation pressure to the evacuation room 320 of each layer of the high-rise building 300 An evacuation door 100 equipped with an opening force securing device, an air supply blower 210 for a supply air supply, a vertical air flow 220 for a supply air supply, a damper for a supply air supply 230, a fire detection sensor 240, And a control unit 250.

The fire detection sensor 240 is installed in the indoor or living room 310 of each floor of the high-rise building 300 to detect a fire.

When a fire is detected by the fire detection sensor 240, the air supply blower 210 supplies air to the evacuation room 320 of each floor through the air supply vertical wind direction 220 installed in the cavity 330, Supply pressure. Here, the evacuation room 320 may include an ante compartment 321 and a staircase 322.

The blower controller 250 controls the blowing amount of the air supply fan 210 so that the evacuation room 320 can maintain the ventilation pressure.

The air supply damper 230 is opened to provide the air supplied via the air supply vertical wind direction 220 to the evacuation room 320 of each floor.

The evacuation door 100 equipped with the opening force securing device is installed in the indoor 310 and the evacuation room 320 so that the evacuator of each floor can evacuate from the inside 310 to the evacuation room 320, And can be operated at a predetermined opening force or less corresponding to the venting pressure of the evacuation room 320. In addition,

In other words, in order to evacuate the evacuation door 100 from the indoor 310 side to the evacuation room 320, the evacuation door 100 on which the evacuation device 100 is installed A door handle 120 for opening; An interlock device (130) installed inside the evacuation door (100) to interlock with the door handle (120) and horizontally move or rotate; A jig 140 connected to the linkage device 130 and transmitting a force corresponding to horizontal movement or rotation of the linkage device 130; And a space formed in an upper portion or a lower portion of the evacuation door 100 and serving as a passage through which the air supply pressurized air in the evacuation room 320 can be leaked to the indoor 310 side, And an opening force securing device (110) that rotates by the jig (140) to reduce the pressure of the evacuation chamber (320) through the gap to secure an opening force of the evacuation chamber (320).

At this time, the opening force securing device 110 is a cylindrical steel bar provided with a gap serving as a passage through which the pressurized air of the evacuation room 320 can leak to the indoor 310 side, 110 may reduce the pressure of the evacuation chamber 320 during a period of operating the door handle 120 so that the evacuation door can secure a predetermined opening force.

When the evacuation door 100 is operated for a predetermined time while the evacuator holds the pressure difference between the evacuation chamber 320 and the in-house 310 at 40 Pa or more, The differential pressure between the evacuation room 320 and the indoor 310 is temporarily reduced by the opening force securing device 110 so as to be opened by the opening force.

When the evacuator escapes from the indoor 310 to the evacuation room 320 and the evacuation door is closed, as the door handle 120 returns to the original position by the elastic force, the opening force securing device 110 Returns to the original position and the differential pressure between the evacuation room 320 and the in-house 310 rises to 40 Pa or more.

8, a control method of an air supply pressurization system having an evacuation door equipped with an opening force securing apparatus according to an embodiment of the present invention includes a high-rise building 300 in which an air supply pressurization system 200 is installed, The air supply pressurization system 200 detects a fire in the building by the fire detection sensor 240 (S110).

Next, when a fire occurs in the high-rise building 300, the air supply pressurization system 200 operates the air supply fan 210 to supply the evacuation room 320, for example, the subsidiary room 321 or the staircase 322, Thereby maintaining the ventilation pressure of the evacuation chamber 320 (S120).

Next, the escape of the fire-generating layer activates the door handle 120 of the evacuation door 100 equipped with the opening force securing device to evacuate from the fire room 310 to the evacuation room 320 (S130) .

Next, the pressure of the evacuation chamber 320 is decreased for a predetermined time by rotating the opening force securing device 110 through the interlock device 130 interlocked with the door handle 120 (S140). That is, by reducing the pressure applied to the evacuation door 100 equipped with the opening force securing device, the evacuation door 100 on which the opening force securing device is mounted can be easily opened easily.

Next, in a state in which the pressure of the evacuation chamber 320 is reduced, the evacuator 100 is evacuated to the evacuation chamber 320 and then the evacuation gate 100 is closed (S150).

Next, in a state where the evacuation door 100 equipped with the opening force securing device is closed, the supply air pressure system 200 restores the venting pressure of the evacuation room 320 (S160).

According to the embodiment of the present invention, when a fire occurs in a high-rise building equipped with an air supply pressurizing system, when the evacuator evacuates from the inside to the evacuation room, a predetermined opening force can be secured to easily open the evacuation door of the evacuated room .

In the meantime, although the evacuation door 100 equipped with the opening force securing device according to the embodiment of the present invention has been described as being mechanically operated by the door handle, the opening force securing device is mechanically operated. However, As will be apparent to those skilled in the art. For example, it is also possible to rotate the opening force securing device by a separate driving device by depressing a button installed in the evacuation door indoors.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Evacuation door with opening force securing device
110: Opening force securing device
120: Door handle (panic device or rotary circular handle)
130: Interlocking device (bearing)
140: jig
150: sealing device
200: Supply pressure system
210: blower for air supply
220: Vertical air flow for supply air
230: Supply damper
240: Fire sensor
250: blower control unit
300: High-rise building
310: Indoors (or living room)
320: Evacuation room
321: Auxiliary room
322: Staircase
330:

Claims (12)

An evacuation door installed between a room 310 of each floor of a high-rise building 300 installed with an air supply and pressurization system 200 and an evacuation room 320,
A door handle 120 for opening the evacuation door 100 from the indoor 310 side to the evacuator to evacuate from the indoor 310 side to the evacuation room 320;
An interlock device (130) installed inside the evacuation door (100) to interlock with the door handle (120) and horizontally move or rotate;
A jig 140 connected to the linkage device 130 and transmitting a force corresponding to horizontal movement or rotation of the linkage device 130; And
A gap is formed in the upper or lower part of the evacuation door 100 to serve as a passage through which the air supply pressurized air in the evacuation room 320 can leak to the indoor 310 side, And an opening force securing device (110) which is rotated by the jig (140) to reduce the pressure of the evacuation chamber (320) through the gap to secure an opening force,
The opening force securing device 110 is a cylindrical steel bar having a gap formed therein to serve as a passage through which the pressurized air in the evacuation room 320 can leak to the indoor 310 side, Characterized in that the evacuation door secures a predetermined opening force by reducing the pressure of the evacuation chamber (320) during a period of operating the door handle (120). delete The method according to claim 1,
When the evacuation door 100 is operated for a predetermined time while the evacuator holds the pressure difference between the evacuation chamber 320 and the in-house 310 at 40 Pa or more, , The differential pressure between the evacuation room (320) and the indoor space (310) is temporarily reduced by the opening force securing device (110) so that the evacuation chamber (320) can be opened. The method of claim 3,
When the evacuator escapes from the indoor 310 to the evacuation room 320 and the evacuation door is closed, as the door handle 120 returns to the original position by the elastic force, the opening force securing device 110 And the differential pressure between the evacuation room (320) and the indoor space (310) rises again to 40 Pa or more. The method according to claim 1,
Wherein the door handle (120) is a panic device (panic bar) or a rotary circular handle. 6. The method of claim 5,
In the case where the door handle 120 is a panic device, if the escenter pushes the panic device and operates the interlock device, the interlock device 130 operates in conjunction with the panic device, And the opening force of the evacuation door (100) is secured by rotation of the opening force securing device (110) by the opening force securing device (140). 6. The method of claim 5,
When the door handle 120 is a rotary circular handle, when the escape person rotates the rotary type circular handle, the interlock device 130 rotates in conjunction with the rotation of the rotary type circular handle and is connected to the interlock device 130 And the opening force of the evacuation door (100) is secured by the rotation of the opening force securing device (110) by the jig (140). The method according to claim 1,
A sealing device 150 for sealing the outer circumferential surface of the opening force securing device 110 is added so that the pressure of the evacuation room 320 is not leaked to the inside 310 when the opening force securing device 110 is closed The evacuation door is equipped with an opening force securing device. In an air supply pressurization system (200) for applying a ventilation pressure to an evacuation room (320) of each layer of a high-rise building (300)
A fire detection sensor 240 installed in a room 310 of each floor of the high-rise building 300 to detect a fire; An air supply blower 210 for supplying air to the evacuation room 320 of each floor through a vertical air flow 220 when a fire is detected by the fire detection sensor 240; A blower controller 250 for controlling the blowing amount of the air supply fan 210 so that the evacuation chamber 320 can maintain the ventilation pressure; A supply damper (230) opened to provide air supplied through the vertical wind (220) to the evacuation room (320) of each layer; And the escape of each floor is installed between the inside 310 and the evacuation room 320 so as to evacuate from the inside 310 to the evacuation room 320 to smoke the inside of the fire 310, And an evacuation door (100) equipped with an opening force securing device (110) capable of operating at a predetermined opening force corresponding to a venting pressure of the evacuation room (320), wherein the opening force securing device The mounted evacuation door 100 includes a door handle 120 for opening the evacuation door 100 from the indoor 310 side in order to escape from the indoor 310 side to the evacuation room 320, And a control unit 130 installed in the evacuation door 100 to be horizontally moved or rotated in association with the door 120. The interlock device 130 is connected to the interlock device 130, A jig 140 for transmitting a corresponding force; And a space formed in an upper portion or a lower portion of the evacuation door 100 and serving as a passage through which the air supply pressurized air in the evacuation room 320 can be leaked to the indoor 310 side, And an opening force securing device (110) that rotates by the jig (140) to reduce the pressure of the evacuation chamber (320) through the gap to secure an opening force of the evacuation chamber
The opening force securing device 110 is a cylindrical steel bar having a gap formed therein to serve as a passage through which the pressurized air in the evacuation room 320 can leak to the indoor 310 side, Is provided with an evacuation door equipped with an opening force securing device, characterized in that the evacuation door secures a predetermined opening force by reducing the pressure of the evacuation room (320) during the time of operating the door handle (120) Supply pressure system. delete 10. The method of claim 9,
When the evacuation door 100 is operated for a predetermined time while the evacuator holds the pressure difference between the evacuation chamber 320 and the in-house 310 at 40 Pa or more, , The differential pressure between the evacuation room (320) and the in-house (310) is temporarily reduced by the opening force securing device (110) so that the evacuation door Pressure system. 10. The method of claim 9,
When the evacuator escapes from the indoor 310 to the evacuation room 320 and the evacuation door is closed, as the door handle 120 returns to the original position by the elastic force, the opening force securing device 110 Returning to the original position, and the pressure difference between the evacuation room (320) and the indoor space (310) rises to 40 Pa or more.

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