KR101137284B1 - Both way air extractor device and apparatus of air curtain for smoke protection using same - Google Patents

Abstract

PURPOSE: An air discharging apparatus discharging to both directions and an air curtain apparatus for a smoke prevention using the same are provided to completely seclude a horizontal air flow by discharging air inhaled by negative pressure to the upper and lower parts at the same time. CONSTITUTION: An air discharging apparatus discharging to both directions comprises a front plate(110), a rear plate(120), a partition, a pair of fans, and discharge units(160a,160b). The front plate comprises a pair of inlets for an air inflow. The rear plate cooperates with the front plate so that a chamber where air can be circulated is formed. The partition partitions the chamber into two parts so that air respectively flowing through the pair of inlets is separated from each other. The pair of fans is respectively installed in the pair of inlets, thereby driving by a motor to make the air to flow into the two parts. The discharge units are respectively installed each upper and lower parts of the front and rear plates so that the flowed air is discharged to outside.

Description

Two-way air discharge device and smoke-proof air curtain device using the same {Both way air extractor device and apparatus of air curtain for smoke protection using same}

The present invention relates to an air discharging device, and more particularly, a bidirectional air discharging device capable of blocking horizontal flow of air by discharging air introduced at the same time in both upper and lower sides and in both directions by introducing air, and a flame retardant using the same. It relates to an air curtain device for.

When a fire occurs in a building, a train, or a tunnel, the harmful fumes have a high temperature, so they move to the ceiling of a building or the ceiling of a train or a tunnel and spread rapidly along the ceiling. do. For this reason, it is not uncommon for a human fire to occur due to suffocation caused by toxic smoke rather than burn damage caused by fire.

Therefore, a flame-retardant facility is provided to prevent the spread of smoke that is distinguished from a firewall that prevents the spread of the flame, and such a conventional flame-retardant facility is usually installed on the ceiling surface to prevent the spread of smoke generated in a fire for a certain time. The main shape is the boundary wall.

However, such a fume boundary wall may protrude downwardly from the ceiling surface to delay the diffusion of smoke along the ceiling during a fire, but there is a large amount of smoke that cannot prevent the diffusion beyond the fume boundary wall. There was this.

The present invention is to solve the above problems, having a pair of discharge portion on the upper side and the lower side and partitioning the chamber into two parts by the diaphragm, the air sucked by the negative pressure lower side and the upper side, both The present invention provides a bidirectional air discharge device and a flame retardant air curtain device using the same.

In order to achieve the above object, the present invention provides a front plate through which a pair of inlets for air inlet; A rear plate disposed opposite to the rear surface of the front plate to form a chamber through which air flows in cooperation with the front plate; A diaphragm which divides the chamber into two spaces so that the air introduced through the pair of inlets can be separated from each other; A pair of fans installed at each of the pair of inlets and driven by a motor so as to respectively introduce air into the two divided spaces; And an ejection unit formed on each of the upper and lower sides of the front plate and the rear plate to discharge the air introduced into the divided two spaces to the outside.

Preferably, the diaphragm may be provided as a guide plate for guiding the flow of air introduced through the inlet port is installed to partially surround the blocking plate and the fan installed in the diagonal direction in the chamber.

Preferably, the guide plate is a second bent from the end of the first plate in the middle of the length in contact with the first plate to form an opening having a predetermined area and an arc-shaped first plate partially surrounding the fan It may be provided as a plate.

Preferably, the discharge portion may be formed by a first bent portion and a second bent portion which are each bent at a predetermined angle inwardly so as to narrow the opening areas on the upper and lower sides of the front and rear plates.

Preferably, the discharge portion may be formed such that the end is inclined at a predetermined angle in one direction.

Preferably, the discharge portion formed on the lower side of the front plate and the rear plate may be provided as a pair.

Preferably, a flange portion is provided at both side ends of the front plate and the rear plate so that a plurality of bidirectional air ejection devices may be continuously coupled.

In addition, the present invention is the front plate through which the inlet for the air inlet is formed; A rear plate disposed opposite to the rear surface of the front plate to form a chamber through which air flows in cooperation with the front plate; Dividing the chamber into two parts of the first space and the second space, the diaphragm having a communication port for communicating the first space and the second space with each other in the middle of the length; A fan installed at the inlet side and driven by a motor to allow air to flow into the first space; And a discharge unit formed at upper and lower sides of the front plate and the rear plate to discharge the air introduced into the first space and the second space to the outside.

Preferably, the diaphragm may be provided as a guide plate for guiding the flow of air introduced through the inlet port is installed to partially surround the blocking plate and the fan installed in the diagonal direction in the chamber.

Preferably, the guide plate is a second bent from the end of the first plate in the middle of the length in contact with the first plate to form an opening having a predetermined area and an arc-shaped first plate partially surrounding the fan It may be provided as a plate.

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Preferably, the communication port may be further provided with an opening and closing port for blocking the flow of air flowing from the first space to the second space.

Preferably, the second space may be divided into two parts by the third plate so as to reduce the flow area of the air introduced through the communication port.

Preferably, the discharge portion may be formed by a first bent portion and a second bent portion which are each bent at a predetermined angle inwardly so as to narrow the opening areas on the upper and lower sides of the front and rear plates.

Preferably, the discharge portion may be formed such that the end is inclined at a predetermined angle in one direction.

Preferably, the discharge portion formed on the lower side of the front plate and the rear plate may be provided as a pair.

In addition, the present invention is provided in the air curtain device installed in the tunnel to block the flow of smoke, it provides a flame-retardant air curtain device provided with any one of the two-way air discharge device.

According to the present invention, a pair of discharge parts are provided on the upper side and the lower side, and the chamber is divided into two parts by the diaphragm so that the air sucked by the negative pressure can be discharged simultaneously in the lower side, the upper side, and in both directions. The effect is to completely block the horizontal flow of air.

1 is a view showing a bidirectional air discharge device according to a first embodiment of the present invention.
Figure 2 is an exploded perspective view of Figure 1;
Figure 3 is a perspective view of the combined state in which the front plate is removed in FIG.
4 is a side view of FIG. 1;
5 is an exemplary view showing a case in which a pair of discharge portions are provided in the bidirectional air discharge apparatus according to the present invention.
6 is a view showing a bidirectional air discharge device according to a second embodiment of the present invention.
7 is an exploded perspective view of FIG. 6.
Figure 8 is a perspective view of the combined state the plate is removed in FIG.
9 is a view showing the operating state of the opening and closing port in FIG.
10 is a state diagram schematically showing the air curtain device to which the two-way air discharge device according to the present invention is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

In order to facilitate understanding of the present invention, the same reference numerals will be used to denote the same constituent elements even if they are shown in different drawings.

In the bidirectional air discharging apparatus 100 and 200 according to the preferred embodiment of the present invention, the discharge unit 160a and 160b are provided to spray the air to the upper side and the lower side at the same time, and spray the introduced air in a direction perpendicular to the ground. This is a technical feature that can completely block the horizontal flow of gas.

First embodiment

The bidirectional air discharging device 100 according to the first embodiment of the present invention has a front plate 110, a rear plate 120, a diaphragm 130, a fan 140, and a discharge unit as shown in FIGS. 1 to 5. 160a, 160b).

The front plate 110 is a plate-like member having a predetermined area, and cooperates with the rear plate 120 to form a chamber (S) and constitute the overall frame of the air discharge device (100). As illustrated in FIGS. 1 to 5, the front plate 110 has a pair of inlets 112a and 112b formed therethrough so that external air can be introduced into the chamber S side, and the pair of inlets ( 112a and 112b are provided to be spaced apart from each other by a predetermined interval. Accordingly, when the fan 140 operates to apply negative pressure in the chamber S, external air is introduced into the chamber S through the pair of inlets 112a and 112b, respectively.

At this time, the inlet (112a, 112b) side may be provided with an inlet guide 114 of the form gradually narrowing the cross-sectional area from the front to the rear to allow the introduced air to be guided to the fan 140 side.

In addition, the first bent portion 116 is formed at a predetermined angle on the upper side and the lower side of the front plate 110 by the rear plate 120, respectively, and the first bent portion 116 is the upper side of the rear plate 120. And the second bent portion 126 formed on the lower side cooperate with each other to form the discharge portions 160a and 160b through which the air introduced into the chamber S is discharged to the outside.

The discharge parts 160a and 160b are formed to be bent in the direction in which the first bent part 116 and the second bent part 126 face each other to form a discharge path through which air is discharged. Accordingly, the air discharged to the outside through the discharge path is reduced in the discharged area is discharged at a high speed.

On the other hand, the discharge unit (160b) provided in the lower portion of the discharge portion (160a, 160b) is provided as a pair as shown in Figure 5 may block the horizontal movement of the air double. In addition, although the first bent part 116 and the second bent part 126 forming the discharge parts 160a and 160b may be integrally formed on the front plate 110 and the rear plate 120, a separate flange ( It should be noted that it may be provided in a form that is detachably coupled to provide F).

In addition, when the two-way air discharge device 100 according to the present invention is installed in the tunnel as shown in Figure 10 used to prevent the diffusion of smoke in the fire, the discharge portion (160a, 160b) is the end of the vehicle It is preferable to incline a predetermined angle in the same direction as the traveling direction so that the forward viewing distance can be increased.

The rear plate 120 is provided with a plate-like member having a predetermined area like the front plate 110, and cooperates with the front plate 110 to form a chamber (S) and cooperate with the first bent portion 116. In order to form the discharge parts 160a and 160b, the second bent part 126 is formed on the upper side and the lower side to be bent at an angle to the front plate 110 side.

In addition, the rear plate 120 is provided with a coupling hole 122 so that the motor 150 for driving the fan 140 may be mounted. The coupling holes 122 are provided in the same number as the inlets 112a and 112b formed in the front plate 110 and are formed in regions corresponding to the inlets 112a and 112b.

The motor base 152 for fixing the motor 150 is coupled to the coupling hole 122 to maintain the rotation shaft 150a of the motor 150 protruding into the chamber S.

Accordingly, the fan 140 is disposed in the chamber S in a state in which the fan 140 is axially coupled to the rotation shaft of the motor 150 protruding into the chamber S, and rotates by receiving a driving force from the motor 150. External air may be sucked into the chamber S through the 112, 112a and 112b.

Here, the fan 140 may be a centrifugal type, axial flow type, and quadrature blower using a two-pole motor that is operated at a high speed. This is to prevent the size of the blower from growing. Of course, it turns out that a general blower that runs at low speed can also be used.

In addition, the motor 150 that provides power for driving the fan 140 may be controlled to operate through a separate controller (not shown), and a sensor (not shown) is provided to detect smoke through the sensor. It turns out that it can automatically turn on / off the operation of the motor 150.

On the other hand, the flange portion (170a, 170b) is provided at both side ends of the front plate 110 and the rear plate 120 to connect the two-way air discharge device 100 according to the present invention the flange portion (170a, 170b) For easy assembly.

The diaphragm 130 divides the chamber S formed by the front plate 110 and the rear plate 120 into two spaces, a first space S1 and a second space S2. That is, in the bidirectional air discharging device 100 according to the present invention, the front plate 110 and the rear plate 120 are spaced apart from each other by a predetermined interval, and discharge portions 160a and 160b are provided on the upper side and the lower side, respectively. Both sides are formed to form a chamber (S), the chamber (S) is partitioned into the first space (S1) and the second space (S2) by the diaphragm 130 is the inlet (112a, 112b) The air introduced through) is discharged to the outside through the discharge part 160a formed on the upper side and the discharge part 160b formed on the lower side without being mixed with each other by the diaphragm 130.

To this end, the diaphragm 130 is disposed diagonally between the pair of inlets 112a and 112b to partition the chamber S into a first space S1 and a second space S2. 132 and a guide plate 134 extending from the blocking plate 132 and guiding air introduced into the inside through the fan 140 toward the discharge parts 160a and 160b.

That is, as shown in FIGS. 2 and 3, the blocking plate 132 has a diagonal direction in the chamber S such that one end is connected to the upper discharge part 160a and the other end is connected to the lower discharge part 160b. The upper side discharge part 160a and the lower side discharge part 160b are completely separated by the blocking plate 132.

Accordingly, the air introduced through the inlet 112a formed at the left side of FIG. 3 is discharged to the outside only through the discharge unit 160b formed at the lower side by the blocking plate 132, and the inlet formed at the right side ( The air introduced through 112b is discharged to the outside only through the discharge portion 160a formed on the upper side.

In addition, the guide plate 134 is provided in the form of an arc to surround the fan 140 disposed in an area corresponding to the inlets 112a and 112b, so that the air sucked into the chamber S through the fan 140. It is prevented to be discharged to the outside through both sides open from the assembly of the front plate 110 and the rear plate 120 to be discharged only to the discharge portion (160a, 160b) side.

Meanwhile, both ends of the blocking plate 132 and the guide plate 134 are welded to the front plate 110 and the rear plate 120 so that the front plate 110 and the rear plate 120 are spaced apart from each other by a predetermined interval. It plays a role. In addition, the guide plate 134 is provided in the shape of an arc, and the middle of the length is formed so that the first plate 134a surrounding the fan 140 and the opening 134c having a predetermined area are formed. And a second plate 134b that is bent from an end of the first plate 134a to be interviewed. The opening 134c is for easily performing welding in the process of welding the first plate 134a and the second plate 134b.

Second embodiment

In the bidirectional air discharging device 200 according to the second embodiment of the present invention, as shown in FIGS. The communication port 231 which is opened and closed by the opening and closing port 233 is provided on the 130 to simultaneously discharge the air introduced through the one inlet 112 to the discharge parts 160a and 160b formed on the upper side and the lower side. It is provided in the form.

The bidirectional air discharge device 200 according to the second embodiment of the present invention is the front plate 110, the rear plate 120, the diaphragm 130, the fan 140 and the discharge unit 160a, 160b like the first embodiment. ).

The front plate 110 is a plate-like member having a predetermined area, and cooperates with the rear plate 120 to form a chamber (S) and constitute the overall frame of the air discharge device (100). As illustrated in FIGS. 6 to 9, the front plate 110 has one inlet 112 formed therethrough so that external air may flow into the chamber S side. Accordingly, when the fan 140 operates to apply negative pressure in the chamber S, external air is introduced into the chamber S through the inlet 112.

In this case, an inlet guide 114 having a form in which the cross-sectional area is gradually narrowed from the front to the rear toward the inlet 112 may be provided so that the introduced air may be guided to the fan 140.

In addition, the first bent portion 116 is formed at a predetermined angle on the upper side and the lower side of the front plate 110 by the rear plate 120, respectively, and the first bent portion 116 is the upper side of the rear plate 120. And the second bent portion 126 formed on the lower side cooperate with each other to form the discharge portions 160a and 160b through which the air introduced into the chamber S is discharged to the outside.

The discharge parts 160a and 160b are formed to be bent in the direction in which the first bent part 116 and the second bent part 126 face each other to form a discharge path through which air is discharged. Accordingly, the air discharged to the outside through the discharge path is reduced in the discharged area is discharged at a high speed.

On the other hand, the discharge unit (160b) provided in the lower portion of the discharge portion (160a, 160b) is provided as a pair as shown in Figure 5 may block the horizontal movement of the air double. In addition, although the first bent part 116 and the second bent part 126 forming the discharge parts 160a and 160b may be integrally formed on the front plate 110 and the rear plate 120, a separate flange ( It should be noted that it may be provided in a form that is detachably coupled to provide F).

In addition, when the two-way air discharge apparatus 200 according to the second embodiment of the present invention is installed in the tunnel as shown in Figure 10 used to prevent the spread of the smoke in the fire (160a, 160b) The end is preferably inclined at a predetermined angle in the same direction as the traveling direction of the vehicle so that the forward viewing distance can be increased. Here, the two-way air discharge device 100 according to the first embodiment having a pair of inlets (112a, 112b) is installed at least one in the center and discharges air to both the upper and lower through one inlet 112 The bidirectional air discharging device 200 according to the second embodiment is installed on both left and right sides of the bidirectional air discharging device 100 according to the first embodiment to constitute the entire air curtain device 1000.

The rear plate 120 is provided with a plate-like member having a predetermined area like the front plate 110, and cooperates with the front plate 110 to form a chamber (S) and cooperate with the first bent portion 116. In order to form the discharge parts 160a and 160b, the second bent part 126 is formed on the upper side and the lower side to be bent at an angle to the front plate 110 side.

In addition, the rear plate 120 is provided with a coupling hole 122 so that the motor 150 for driving the fan 140 may be mounted. The coupling hole 122 is provided in the same number as the inlet 112 formed in the front plate 110 and is formed in a region corresponding to the inlet 112.

The motor base 152 for fixing the motor 150 is coupled to the coupling hole 122 to maintain the rotation shaft 150a of the motor 150 protruding into the chamber S.

Accordingly, the fan 140 is disposed in the chamber S in a state in which the fan 140 is axially coupled to the rotating shaft of the motor 150 protruding into the chamber S, and rotates by receiving a driving force from the motor 150. Through 112, the outside air can be sucked into the chamber (S).

Here, the fan 140 may be a centrifugal type, axial flow type, and quadrature blower using a two-pole motor that is operated at a high speed. This is to prevent the size of the blower from growing. Of course, it turns out that a general blower that runs at low speed can also be used.

In addition, the motor 150 that provides power for driving the fan 140 may be controlled to operate through a separate controller (not shown), and a sensor (not shown) is provided to detect smoke through the sensor. It turns out that it can automatically turn on / off the operation of the motor 150.

On the other hand, the flange portion (170a, 170b) is provided at both side ends of the front plate 110 and the rear plate 120 to continuously connect the two-way air discharge device according to the present invention-in more detail according to the first embodiment When connecting the two-way air discharge device 200 according to the second embodiment to one side of the two-way air discharge device 100 to be easily assembled through the flanges (170a, 170b).

The diaphragm 130 divides the chamber S formed by the front plate 110 and the rear plate 120 into two spaces, a first space S1 and a second space S2. That is, in the bidirectional air discharging device 200 according to the second embodiment of the present invention, the front plate 110 and the rear plate 120 are spaced apart from each other by a predetermined interval, and the discharge portions 160a and 160b are respectively disposed on the upper side and the lower side. Is provided between the sides to form an open chamber (S), the chamber (S) is partitioned into the first space (S1) and the second space (S2) by the diaphragm 130 and the The air introduced through the inlet 112 is not mixed with each other by the diaphragm 130 and is discharged to the outside only through the discharge unit 160b formed at the lower side. In addition, when it is desired to discharge the air introduced through the inlet 112 through the discharge unit 160a formed on the upper side, the communication port 231 formed in the diaphragm 130 is opened to open the communication port 231. By allowing the air to move to the second space (S2) through the air can be discharged to the upper side.

To this end, the diaphragm 130 is disposed in the chamber (S) in a diagonal direction to partition the chamber (S) into the first space (S1) and the second space (S2), and the It includes a guide plate 134 extending from the blocking plate 132 to guide the air introduced into the interior through the fan 140 toward the discharge parts 160a and 160b.

That is, as shown in FIG. 6, the blocking plate 132 is disposed in the diagonal direction in the chamber S such that one end is connected to the upper discharge part 160a and the other end is connected to the lower discharge part 160b. The upper discharge part 160a and the lower discharge part 160b are completely separated by the blocking plate 132. In this case, a communication port 231 for communicating the first space S1 and the second space S2 is provided in the middle of the length of the blocking plate 132, and the opening and closing port 233 for opening and closing the communication port 231. Is prepared.

Accordingly, the air introduced through the inlet 112 formed at the left side of FIG. 6 is discharged to the outside only through the discharge unit 160b formed at the lower side by the blocking plate 132, and the discharge formed at the upper side. When the air is also to be discharged to the part 160a side, the opening / closing port 233 is moved to open the communication port 231 so that the sucked air can be simultaneously discharged to the upper discharge part 160a.

The guide plate 134 is provided in the form of an arc so as to surround the fan 140 disposed in the region corresponding to the inlet 112 so that the air sucked into the chamber S through the fan 140 is the front plate 110. And to prevent the discharge to the outside through the open one side portion in the assembly of the rear plate 120 to be discharged only to the discharge portion (160a, 160b) side. The other side opened in the assembly of the front plate 110 and the rear plate 120 is provided with a third plate 235 connected between the lengths of the blocking plate 132 to prevent the air from being discharged to the outside. Here, the third plate 235 prevents the air introduced into the second space S2 through the communication port 231 from being discharged through the side portion and narrows the area of the second space S2. It serves to increase the pressure of the air discharged to the discharge portion (160a) side formed in the upper portion.

Meanwhile, both ends of the blocking plate 132 and the guide plate 134 are welded to the front plate 110 and the rear plate 120 so that the front plate 110 and the rear plate 120 are spaced apart from each other by a predetermined interval. It plays a role. In addition, the guide plate 134 is provided in the shape of an arc, and the middle of the length is formed so that the first plate 134a surrounding the fan 140 and the opening 134c having a predetermined area are formed. And a second plate 134b that is bent from an end of the first plate 134a to be interviewed. The opening 134c is for easily performing welding in the process of welding the first plate 134a and the second plate 134b.

According to the bidirectional air discharge device (100,200) according to the present invention as described above, a pair of discharge parts (160a, 160b) on the upper side and the lower side and the chamber (S) in two parts by the diaphragm 130 By partitioning the air sucked by the negative pressure can be discharged simultaneously in the lower side, the upper side, both directions, there is an effect that can completely block the horizontal flow of air.

Meanwhile, in the bidirectional air discharge device according to the present invention, as shown in FIG. 10, the bidirectional air discharge device 100 according to the first embodiment and the bidirectional air discharge device 200 according to the second embodiment are combined with each other. By installing in the inside, the air curtain device 1000 for flame retardancy can be comprised.

That is, in the state in which the bidirectional air discharge device 100 according to the first embodiment is disposed at the center of the tunnel, the bidirectional air discharge device 200 according to the second embodiment is disposed on both left and right sides. In this case, when smoke occurs in a fire in the tunnel, the air discharge device (100,200) is operated to inject air upward and downward to prevent smoke generated in the horizontal direction along the ceiling of the tunnel.

Although specific embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to such specific structures. Those skilled in the art will be able to easily modify or change without departing from the technical spirit described in the claims below. However, equivalents, replacements, and modifications through simple design variations or modifications are all apparently within the scope of the present invention.

100,200: Two-way air discharge device
110: front plate 112,112a, 112b: inlet
114: inlet guide 116: first bent portion
S: Chamber S1: First Space
S2: second space F: flange
120: thick plate 122: bonding hole
126: second bent portion 130: diaphragm
231: communication port 132: blocking plate
233: opening and closing door 134: information board
134a: First Edition 134b: Second Edition
134c: opening 235: third edition
140: fan 150: motor
150a: rotating shaft 152: motor base
160a, 160b: discharge part 170a, 170b: flange

Claims (17)

A front plate through which a pair of inlets for air inflow are formed;
A rear plate disposed opposite to the rear surface of the front plate to form a chamber through which air flows in cooperation with the front plate;
A diaphragm which divides the chamber into two spaces so that the air introduced through the pair of inlets can be separated from each other;
A pair of fans installed at each of the pair of inlets and driven by a motor so as to respectively introduce air into the two divided spaces;
And a discharge unit provided at the upper side and the lower side of the front plate and the rear plate to discharge the air introduced into the divided two spaces to the outside. The method of claim 1,
The diaphragm is a bidirectional air discharge device, characterized in that provided with a guide plate for guiding the flow of air introduced through the inlet is installed so as to partially surround the blocking plate and the fan installed in the chamber in a diagonal direction. The method of claim 2,
The guide plate is provided with an arc-shaped first plate partially enclosing the fan and a second plate bent from an end of the first plate to have an intermediate length in contact with the first plate to form an opening having a predetermined area. Two-way air discharge device, characterized in that. The method of claim 1,
And the discharge part is formed by first and second bent parts which are respectively bent at a predetermined angle inwardly so as to narrow the opening areas on the upper and lower sides of the front and rear plates. The method of claim 4, wherein
The discharge unit is a two-way air discharge device, characterized in that the end is inclined at a predetermined angle in one direction. The method of claim 1,
Bi-directional air discharge device, characterized in that provided in a pair of discharge portion formed on the lower side of the front plate and the rear plate. The method of claim 1,
Both sides of the front plate and the rear plate is provided with a flange portion, the two-way air discharge device, characterized in that the plurality of two-way air discharge device is continuously coupled. A front plate through which an inlet for air inlet is formed;
A rear plate disposed opposite to the rear surface of the front plate to form a chamber through which air flows in cooperation with the front plate;
Dividing the chamber into two parts of the first space and the second space, the diaphragm having a communication port for communicating the first space and the second space with each other in the middle of the length;
A fan installed at the inlet side and driven by a motor to allow air to flow into the first space;
And a discharge unit provided at upper and lower sides of the front and rear plates to discharge air introduced into the first space and the second space to the outside, respectively. The method of claim 8,
The diaphragm is a bidirectional air discharge device, characterized in that provided with a guide plate for guiding the flow of air introduced through the inlet is installed so as to partially surround the blocking plate and the fan installed in the chamber in a diagonal direction. The method of claim 9,
The guide plate is provided with an arc-shaped first plate partially enclosing the fan and a second plate bent from an end of the first plate to have an intermediate length in contact with the first plate to form an opening having a predetermined area. Two-way air discharge device, characterized in that. delete The method of claim 8,
The communication port is a two-way air discharge device, characterized in that further provided with an opening and closing port for blocking the flow of air flowing from the first space to the second space. The method of claim 8,
And the second space is divided into two parts by a third plate so as to reduce the flow area of air introduced through the communication port. The method of claim 8,
And the discharge part is formed by first and second bent parts which are respectively bent at a predetermined angle inwardly so as to narrow the opening areas on the upper and lower sides of the front and rear plates. The method of claim 14,
The discharge unit is a two-way air discharge device, characterized in that the end is inclined at a predetermined angle in one direction. The method of claim 8,
Bi-directional air discharge device, characterized in that provided in a pair of discharge portion formed on the lower side of the front plate and the rear plate. In the air curtain device installed in the tunnel to block the flow of smoke,
A flame retardant air curtain device provided with any one of claims 1 to 10 and 12 to 16.

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