KR102618800B1 - Fire damper - Google Patents

Abstract

The present invention relates to a fire damper, which can prevent the spread of flames, toxic smoke, etc. in the event of a fire. In particular, by applying a vertically installed duct, it can minimize the trapping of garbage or other foreign substances in the event of a fire. The purpose is to
The fire damper according to the present invention is arranged to be spaced apart from each other at a certain distance along the inner wall of the duct, and when a fire occurs, it is deployed through a rotational action to block the passage of the duct in such a way that both sides and the ends facing each other come into contact with each other. It includes a blocking part that does.

Description

Fire Damper {FIRE DAMPER}

The present invention relates to a fire damper, and more specifically, it can prevent the spread of flames and toxic smoke in the event of a fire. In particular, by applying a vertically installed duct, it prevents garbage and various other foreign substances from getting caught in the event of a fire. It is about a fire damper that can be minimized.

In general, when constructing a building, exhaust facilities are installed inside the building to maintain a comfortable living environment inside the building by discharging high heat, high humidity, bad odor, dust, harmful gases, or smoke generated inside the building to the outside of the building. do.

Exhaust equipment consists of an exhaust duct, an exhaust duct connector installed through the fire partition to connect the exhaust ducts on one side of the fire partition and the other side, and a blower installed outside the building, eliminating the high heat generated inside the building. This is an exhaust system installed inside a building to absorb moisture, bad odors, dust, harmful gases or smoke, and discharge them to the outside of the building.

Exhaust ducts have an end drawn out from the inner wall of the building's interior, and are used to remove high heat, humidity, odor, dust, harmful gases, or smoke generated in each room of the building, which is sucked in through the drawn end or through a flexible duct connected to the drawn end. It becomes a passageway for movement.

Additionally, the exhaust duct connector is a connector for connecting exhaust ducts adjacent to the exhaust duct to each other.

In addition, the blower is an intake fan installed outside the building to suck in high heat, humidity, bad odor, dust, harmful gases, or smoke generated inside the building through the exhaust duct (a) and discharge it to the outside of the building.

The building's exhaust system (A), configured as described above, normally absorbs high heat, humidity, odor, dust, harmful gases, or smoke generated inside the building and discharges it to the outside of the building, thereby improving the living environment inside each building. It plays a role in keeping you comfortable.

However, when a fire breaks out in a building, the exhaust equipment functions as a passage for fire spread by allowing high-temperature flames penetrating through the exhaust duct to move at high speed through the exhaust duct and spread across the fire partition walls in the building. do.

In order to prevent this, conventional fire dampers made of steel (refers to known conventional fire dampers with a blocking plate installed in the middle of the steel body, hereinafter referred to as 'conventional fire dampers') as exhaust duct connectors are installed on the fire partition wall of the building to prevent fire. This prevents it from spreading across the building's fire barrier.

Conventional fire dampers are applied in a structure that rotates at a 90-degree angle in the exact center of the duct, opening the internal space of the duct in the event of a non-fire, and rotating at a 90-degree angle in the event of a fire, so that the geographic edge comes into contact with the inner wall of the duct, The internal space of the is closed.

These fire dampers can be easily used in a structure in which the duct is installed horizontally, but when the duct is installed vertically, trash and various foreign substances flowing into the duct become caught in the fire damper, and eventually, when a fire occurs, trash and various foreign materials are trapped in the fire damper. There is a problem that the fire damper does not work due to etc.

Therefore, there is an urgent need to develop a product that can be applied to vertically installed ducts to prevent the spread of flames and toxic smoke in the event of a fire, while minimizing the phenomenon of garbage and various foreign substances becoming caught in the event of a non-fire.

Public Patent Publication No. 10-2022-0113618 (2022.08.16.)

The present invention was developed to solve the problems of the prior art described above, and can prevent the spread of flames and toxic smoke in the event of a fire. In particular, by applying a vertically installed duct, in the event of a fire, it is possible to collect waste and other various substances. The purpose is to provide a fire damper that can minimize the trapping of foreign substances.

Fire dampers according to an embodiment of the present invention are arranged to be spaced apart from each other at a certain distance along the inner wall of the duct, and when a fire occurs, they are deployed through a rotational operation so that both sides and the ends facing each other are in contact with each other. It includes a blocking portion that blocks the passage.

And, the blocking portion is formed in a fan shape.

Additionally, mounting holes respectively coupled to the bottom of the blocking unit; and a rotation guide fixed to the inner wall, including a bracket formed in an 'L'-shaped cross-sectional shape, spaced apart from the inner wall at a predetermined distance, each of the attachments being rotatably mounted, and formed in an octagonal frame shape. Includes more wealth.

And, it is installed in the inner space of the duct and further includes a hollow connection body having an octahedral-shaped inner wall, wherein the blocking portion is rotatably coupled to each inner wall of the connection body, and is rotatably coupled to each inner wall of the connection body. The wall surface is formed in a stepped structure to support the blocking portion when it is deployed.

In addition, a plurality of fuse units are each fixed so that the blocking unit does not close the passage, and the fixing force for the blocking unit is released when the blocking unit is blown by a flame in the event of a fire; And it further includes an elastic support part that elastically supports the blocking part to unfold in a shape that is perpendicular to the inner wall surface when the fuse part is blown.

Additionally, an exhaust hole is formed in the duct at a higher position than the blocking portion to discharge air passing through the blocking portion deployed in the event of a fire to the outdoors.

Additionally, an opening/closing door rotatably coupled to the discharge hole and made of a metal material; A weight portion coupled to the inner surface of the opening and closing door and disposed in the passage of the duct, formed in an airfoil shape, and guiding the opening and closing door to rotate in the direction of the passage when a fire occurs; A magnet part attached to the opening/closing door from the outside of the duct to maintain the discharge hole in a closed state; A cylinder coupled to the outer surface of the duct and lifting the magnet unit to separate from the opening/closing door so that the opening/closing door rotates toward the passage side by the weight portion and its own weight in the event of a fire; a discharge pipe disposed outside the duct to face the discharge hole, one side of which penetrates the outer wall of the building and protrudes to the outdoors; and an intake fan installed in the internal space of the discharge pipe and sucking in air existing in the passage of the duct.

The fire damper according to the present invention can prevent the spread of flames and toxic smoke in the event of a fire, and in particular, by applying a vertically installed duct, it has the effect of minimizing the trapping of trash or other foreign substances in the event of a fire. There is.

Figure 1 is a cross-sectional view showing a fire damper according to an embodiment of the present invention.
Figure 2 is a perspective view showing a fire damper according to an embodiment of the present invention.
Figure 3 is a perspective view showing another embodiment of a fire damper according to an embodiment of the present invention.
Figure 4 is a plan perspective view showing the blocking portion applied to the fire damper according to an embodiment of the present invention in an open state.
Figure 5 is a bottom perspective view showing the blocking portion applied to the fire damper according to an embodiment of the present invention in an open state.
Figure 6 is a perspective view showing another embodiment of a fire damper according to an embodiment of the present invention.
Figure 7 is a perspective view showing the blocking portion in an open state in another embodiment of the fire damper according to an embodiment of the present invention.
Figure 8 is a perspective view showing the blocking portion and connection body applied to Figure 7.
Figure 9 is a side view showing a state in which the magnet part, cylinder, discharge pipe, and intake fan are applied to the contents of Figures 6 to 8.
Figure 10 is an enlarged cross-sectional view of part A of Figure 9.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Figure 1 is a cross-sectional view showing a fire damper according to an embodiment of the present invention, Figure 2 is a perspective view showing a fire damper according to an embodiment of the present invention, and Figure 3 is a fire damper according to an embodiment of the present invention. It is a perspective view showing another embodiment of the damper, Figure 4 is a plan perspective view showing the blocking portion applied to the fire damper according to an embodiment of the present invention in an open state, and Figure 5 is a fire damper according to an embodiment of the present invention. It is a bottom perspective view showing the blocking portion applied to the damper in an open state, Figure 6 is a perspective view showing another embodiment of a fire damper according to an embodiment of the present invention, and Figure 7 is a fire damper according to an embodiment of the present invention. It is a perspective view showing the blocking part in an open state in another embodiment of the damper, Figure 8 is a perspective view showing the blocking part and the connection body applied to Figure 7, Figure 9 is a magnet part in the contents of Figures 6 to 8, It is a side view showing the cylinder, discharge pipe, and intake fan applied, and FIG. 10 is an enlarged cross-sectional view of portion A of FIG. 9.

The fire damper (1) according to an embodiment of the present invention can prevent the spread of flames, toxic smoke, etc. in the event of a fire, and can minimize the trapping of various foreign substances, especially when applied to the vertically installed duct (2). This is a product that can be used.

To this end, the fire damper 1 according to an embodiment of the present invention includes a blocking portion 10, a mounting portion 30, a rotation guide portion 40, a fuse portion 50, and an elastic support portion 60. It may include at least one or more of the following.

The blocking portion 10 maintains the passage formed inside the duct 2 open, and in the event of a fire, expands to form a right angle to the inner wall of the duct 2 to close the passage, thereby preventing flame, toxic smoke, etc. It is a composition that blocks the spread of .

For this purpose, the blocking portions 10 are applied in plural numbers and are arranged to be spaced apart from each other at regular intervals along the inner wall of the duct 2.

As shown in FIG. 1, in the event of a fire, the blocking units 10 are maintained in a vertical position by the fuse unit 50, which will be described later, to open the passage.

At this time, the blocking portions 10 are arranged to be spaced apart from the inner wall by about 1 cm to 3 cm.

In other words, the blocking units 10 are placed at the edge of the passage in the upright state to allow smooth air flow.

And, as shown in Figure 2, the blocking portions 10 are formed in the form of a plate and are roughly fan-shaped, so that when a fire occurs, they rotate and unfold due to their own weight, so that both sides and the ends facing each other contact each other. By closing the passage in such a way that flames, toxic smoke, etc. are prevented from spreading through the passage.

That is, when the blocking portions 10 are deployed, they can be formed into a plate shape corresponding to the passage by combining them with each other.

The drawing shows an example in which the passage is formed in a circular shape, and when the blocking portions 10 are deployed, they are expanded at right angles to the duct 2 to form a disk and close the passage.

With reference to FIG. 2 , magnets 14 having different polarities may be embedded inside the blocking portion 10 .

When the blocking parts 10 are deployed to close the passage, the magnets 14 are attached to each other by magnetic force so that the blocking parts 10 remain in a horizontal state, that is, in a closed state.

At this time, a groove may be formed on the upper surface of the blocking portion 10, and the magnet 14 may be accommodated in the groove.

The drawing shows an example in which eight blocking units 10 are applied as one set, but the number of blocking units 10 applied may be 8 or less or 8 or more.

In addition, it is revealed that the blocking units 10 may be applied in multiple sets and installed at regular intervals along the longitudinal direction of the duct 2.

The mounting holes 30 are each coupled to the bottom based on the state in which the blocking portion 10 is deployed.

The mounting port 30 has an open bottom and both sides, and an empty space in which the rotation guide part 40 is accommodated is formed.

This mounting tool 30 can be rotated in the forward or reverse direction while being mounted in a way that surrounds the rotation guide unit 40.

The rotation guide unit 40 includes a plurality of brackets 41 fixed to the inner wall of the damper.

The brackets 41 are coupled to the bottom of the rotation guide unit 40 so that they are spaced apart from each other at a certain distance.

The bracket 41 is formed in a roughly 'ㄴ' cross-sectional shape, with the upper side coupled to the bottom of the rotation guide portion 40 and the lower side fixed to the inner wall of the damper.

The rotation guide portion 40 is fixed by a bracket 41 at a predetermined distance from the inner wall of the damper.

As shown in FIGS. 4 and 5, the rotation guide portion 40 may be formed in a polygonal frame shape to rotatably support a plurality of blocking portions 10 at the same time.

The rotation guide portion 40 is formed in a circular cross-sectional shape and performs an axial function.

That is, the mounting device 30 can be rotated around the rotation guide portion 40, and as a result, the blocking portion 10 can be rotated to be in a vertical or horizontal form.

At this time, the edge area 11 of the blocking portion 10 rotates in the up and down directions in the space between the inner wall and the rotating guide, and the remaining area 12 rotates in a direction closer to or away from the inner space of the rotating guide. It can be rotated up and down.

Additionally, the blocking unit 10 opens the passage in a vertical state and closes the passage in a horizontal state.

Additionally, portions of both sides of the edge area of the blocking portion 10 may be cut to form a cut hole 10a.

By cutting both sides of the edge area, it is possible to prevent the blocking units 10 from interfering with each other when the blocking units 10 are rotated horizontally due to a fire.

In addition, the fire damper 1 according to an embodiment of the present invention is installed on the inner wall at regular intervals, as shown in FIG. 3, and may include a filling portion 130 that fills the cut hole 10a.

The plugging portion 130 may be formed of the same thickness and material as the blocking portion 10.

As the number of blocking portions 10 is applied to 8, the number of plugging portions 130 is applied to 7 to fill all the cut holes 10a.

At this time, about 1/2 of the filling part 130 fills the cut hole 10a formed in one blocking part 10, and the remaining 1/2 area fills the cutting hole 10a formed in the other blocking part 10. Fill the hole (10a).

That is, the filling portion 130 jointly fills the cut holes 10a formed in the two adjacent blocking portions 10.

In the fire damper 1 according to an embodiment of the present invention, the engagement portion 130 is approximately in contact with the blocking portion 10 so as not to interfere with the engagement portion 130 when the blocking portion 10 is rotated in the horizontal direction. It is designed to be spaced about 1mm to 5mm apart.

Additionally, support pieces (not shown) that support the bottom surfaces of the deployed blocking portions 10 may be formed to protrude at a certain length on the inner surfaces of the rotation guide portions 40 facing each other.

The support piece may be formed in a substantially square plate shape, and is formed to have a length capable of supporting the deployed blocking portion 10 to remain horizontal.

The support piece consists of two pairs and is applied in eight pairs.

That is, the bottom surface of one blocking portion 80 is supported for each two support pieces.

The fuse unit 50 is fixed vertically so that the blocking unit 10 maintains the passage open, and in the event of a fire, the vertically folded blocking unit 10 is horizontally unfolded.

The fuse units 50 are applied in the same number as the blocking units 10, and each of the blocking units 10 is fixed vertically.

As shown in FIG. 1, the fuse unit 50 includes a first fuse unit 51 installed on the inner wall and a second fuse unit coupled to the first fuse unit 51 and fixed to the upper side of the blocking unit 10. (52) may be included.

The first fuse unit 51 and the second fuse unit 52 may be made of lead material so that they can be melted and blown by heat from a flame.

The first fuse unit 51 and the second fuse unit 52 allow the blocking unit 10 to open the passage in the event of a fire, and are blown in the event of a fire to release the fixing force to the blocking unit 10.

The elastic support portion 60 is configured to allow the blocking portion 10 to unfold at a right angle to the inner wall surface when the first fuse unit 51 and the second fuse unit 52 are blown during a fire.

The elastic support parts 60 are applied in the same number as the blocking parts 10 and elastically support the blocking parts 10, respectively.

To this end, the elastic support portion 60 may be formed of any one of a torsion spring, a coil spring, and a leaf spring, and an example formed of a torsion spring is shown in the drawing.

In the event of a fire, while the blocking portion 10 is standing vertically and opening the passage, the elastic support portion 60 is folded between the inner wall surface and the blocking portion 10 and maintains a compressed state.

Therefore, the elastic support portion 60 elastically supports the blocking portion 10.

In this way, the blocking portions 10 maintain a vertically folded state in the passage in the event of a fire. Also, when a fire occurs and the first fuse unit 51 and the second fuse unit 52 are blown out by flame, each elastic support part 60 unfolds the blocking part 10 horizontally. When deployed, the blocking portions 10 form approximately a disk and close the passage to prevent flames, toxic smoke, etc. from spreading.

Meanwhile, another embodiment of the fire damper 1 according to an embodiment of the present invention will be described with reference to FIGS. 9 and 10.

In this embodiment, the connection body 20, the blocking portion 10, the support portion, the fuse portion 50, the elastic support portion 60, the opening/closing door 70, the weight portion 80, and the magnet. It may include at least one of the unit 90, the cylinder 100, the discharge pipe 110, and the intake fan 120.

The connection body 20 may be formed in the same cylindrical shape as the duct 2.

The connection body 20 is installed in the inner space of the tuft.

At this time, the outer periphery of the connecting body 20 is fixed so as to be in close contact with the inner periphery of the duct (2).

The connection body 20 may be applied in plural numbers and installed at regular intervals along the longitudinal direction of the duct 2.

The inner wall of the connection body 20 is formed in an octahedral shape.

Additionally, the connection body 20 may be formed in a hollow shape to allow air to pass through.

In addition, the inner wall surface is formed in a stepped structure in the upper and lower directions, so that when the blocking portions 10 are deployed, they are maintained in that state.

That is, the supporting surface 22 of the step portion 21 supports the bottom surface of the edge area 11 of the blocking portion 10, and the blocking portions 10 are combined into a disk shape to block the passage.

The blocking portion 10 is coupled to the upper surface of the support surface 22 so as to be rotatable in the up and down directions.

For this purpose, a cylindrical hinge piece 23 is formed in the central portion of the upper surface of the support surface 22, the lower central portion of the blocking portion 10 is cut, and the hinge piece 23 is formed in the cut portion. A pair of rotation shafts 13 are formed, respectively inserted into one side and the other side.

Accordingly, the blocking portion 10 can be rotated in the up and down directions through the hinge piece 23 and the rotation axis 13.

Additionally, support pieces (not shown) that support the bottom surfaces of the deployed blocking portions 10 may be formed to protrude at a certain length on the inner surfaces of the supporting surfaces 22 facing each other.

The support piece may be formed in a substantially square plate shape, and is formed to have a length capable of supporting the deployed blocking portion 10 to remain horizontal.

The support piece consists of two pairs and is applied in eight pairs.

That is, the bottom surface of one blocking portion 80 is supported for each two support pieces.

The blocking portion 10 of this embodiment is applied to each of the connecting bodies 20, and, like the aforementioned blocking portion 10, maintains a vertically erected state in the event of a fire to open the passage of the connecting body 20, In the event of a fire, it rotates and unfolds due to its own weight, closing the passage of the connecting body 20 in such a way that both sides and the ends facing each other contact each other, thereby preventing toxic smoke, etc. from spreading through the passage.

Since the function of the blocking unit 10 of this embodiment is the same as that of the blocking unit 10 of the other embodiments described above, detailed description will be omitted.

A discharge hole (2a) is formed on one side of the connection body (20).

The discharge hole (2a) is formed at a higher position than the blocking portion (10). Therefore, in the event of a fire, even if toxic gas passes through the space between the blocking parts 10 or the fire-resistant filler, it can be discharged to the outside of the connecting body 20 through the discharge hole 2a and the discharge pipe 110.

The fuse unit 50 is coupled to the first fuse unit 51 installed on the inner wall of the connection body 20 and the second fuse unit (51) and fixed to the upper side of the blocking unit 10. 52) may be included.

The first fuse unit 51 and the second fuse unit 52 of this embodiment may also be made of lead material so that they can be melted and blown by heat from the flame, and the blocking unit 10 may open the passage in the event of a fire. And, in the event of a fire, it melts and the fixing force on the blocking portion 10 is released.

The elastic support portion 60 is a configuration that allows the blocking portion 10 to unfold at a right angle to the inner wall surface when the first fuse unit 51 and the second fuse unit 52 are blown in the event of a fire. It is applied in the same number as (10), and elastically supports each blocking portion (10).

In the event of a fire, while the blocking portion 10 is standing vertically and opening the passage, the elastic support portion 60 is folded between the inner wall surface of the connecting body 20 and the blocking portion 10 and maintains a compressed state.

In addition, when a fire occurs and the first fuse unit 51 and the second fuse unit 52 are blown out by flame, each elastic support part 60 unfolds the blocking part 10 horizontally, thereby reducing the flame and toxicity. Prevents smoke, etc. from spreading.

Additionally, a fireproof filler may be attached to at least one of the upper and lower surfaces of the blocking portion 10 based on the deployed state of the blocking portion 10.

The fireproof filler is formed in the same shape and size as the blocking portion (10).

The fire-resistant filler is made of a fire-resistant material and does not melt, but when the surrounding temperature rises above a certain temperature due to a flame, it swells and expands approximately 20 times in volume.

Therefore, when a fire occurs, the blocking portion 10 is deployed to block the passage, and the fire-resistant filler attached to at least one of the upper and lower surfaces of the blocking portion 10 is foamed to block flames spreading between floors.

The opening/closing door 70 is rotatably coupled to the discharge hole 2a.

Shafts 71 are formed on both lower sides of the opening/closing door 70, and an installation hole 2b in which the shaft 71 is installed may be formed in the connecting body 20.

The shaft 71 can be rotated in the forward or reverse direction in the installation hole 2b.

Accordingly, the opening/closing door 70 can maintain the discharge hole 2a in a closed state and then rotate in the direction of the passage of the connecting body 20 by the action of the weight portion 80 and the cylinder 100.

The opening/closing door 70 may be made of a metal material so that the magnet portion 90, which will be described later, is magnetically attached, or may be made of a magnet 14 material that has an opposite polarity to the magnet portion 90.

The bottom of the opening/closing door 70 may be rounded into a curved shape for smooth rotation.

The weight portion 80 is coupled to the inner surface of the opening/closing door 70 and is disposed in the passage of the connecting body 20.

The weight portion 80 may be formed in an airfoil shape to quickly discharge air, odor, etc. in the event of a fire.

At this time, the weight portion 80 may be formed in a square block or circular block shape instead of an airfoil shape.

The weight portion 80 is formed to have a predetermined weight and guides the opening/closing door 70 to rotate in the direction of the passage of the connecting body 20 when a fire occurs.

The magnet portion 90 is attached to the opening/closing door 70 from the outside of the connecting body 20.

Due to this, the opening/closing door 70 is fixed and the discharge hole 2a is maintained in a closed state.

The cylinder 100 is coupled to the outer surface of the connection body 20.

The cylinder 100 may be formed as a type operated by hydraulic pressure.

The piston of the cylinder 100 is coupled to the magnet portion 90.

At this time, the fire damper 1 according to an embodiment of the present invention may further include a fire detection sensor installed inside the building and a control unit that receives information about whether or not there is a fire from the fire detection sensor.

Fire detection sensors are installed on the ceiling or walls of a building and detect fire occurring inside the building.

When a fire detection sensor detects a fire, it transmits it to the control unit, and the control unit operates the cylinder 100 and the intake fan 120.

The piston of the cylinder 100 is raised by a control signal from the controller, and as a result, the magnet unit 90 is also raised and separated from the opening/closing door 70.

Accordingly, the opening/closing door 70 is rotated toward the passage side by the weight portion 80 and its own weight to open the discharge hole 2a.

The discharge pipe 110 is arranged to face the discharge hole 2a on the outside of the connection body 20, and can be seated on the interfloor slab 3 constructed in the building.

One side of the discharge pipe 110 penetrates the outer wall of the building and protrudes outdoors.

The intake fan 120 may be disposed in front of or in the interior space of the discharge pipe 110 and face the discharge hole 2a.

The intake fan 120 sucks in toxic gas or smoke that has passed through the upper side of the blocking unit 10.

Therefore, toxic gases, smoke, etc. are discharged to the outside of the building through the discharge pipe 110.

This can more reliably prevent toxic gases or smoke from spreading to other floors through the damper.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. must be interpreted.

1: Fire Damper 10: Blocker
10a: cut hole 11: edge area
12: Rest area 13: Rotation axis
14: Magnet 20: Connection body
21: step portion 22: support surface
23: Hinge piece 30: Mounting port
40: rotation guide part 41: bracket
50: Fuse unit 51: First fuse unit
52: second fuse unit 60: elastic support portion
70: opening/closing door 71: axis
80: weight part 90: magnet part
100: cylinder 110: discharge pipe
120: intake fan 130: knot

Claims (5)

Blocking units that are arranged to be spaced apart from each other along the inner wall of the duct at regular intervals and, in the event of a fire, are deployed through a rotational motion to block the passage of the duct in such a way that both sides and ends facing each other are in contact with each other;
a plurality of fuse units each fixed so that the blocking unit does not close the passage, and each of which is blown by a flame in the event of a fire, thereby releasing the fixing force to the blocking unit;
an elastic support portion that elastically supports the blocking portion to unfold in a form that is perpendicular to the inner wall surface when the fuse portion is blown;
In the duct, an exhaust hole is formed at a higher position than the blocking part to discharge air passing through the blocking part deployed in the event of a fire to the outdoors,
An opening/closing door rotatably coupled to the discharge hole and made of a metal material;
A weight portion coupled to the inner surface of the opening and closing door and disposed in the passage of the duct, formed in an airfoil shape, and guiding the opening and closing door to rotate in the direction of the passage when a fire occurs;
A magnet part attached to the opening/closing door from the outside of the duct to maintain the discharge hole in a closed state;
A cylinder that is coupled to the outer surface of the duct and lifts the magnet portion so that the opening/closing door rotates toward the passage side by the weight portion and its own weight to separate from the opening/closing door in the event of a fire;
a discharge pipe disposed outside the duct to face the discharge hole, one side of which penetrates the outer wall of the building and protrudes to the outdoors; and
A fire damper installed in the inner space of the discharge pipe and including an intake fan that sucks air existing in the passage of the duct.
According to paragraph 1,
A fire damper wherein the blocking portion is formed in a fan shape.
According to paragraph 1,
Mounting holes each coupled to the bottom of the blocking unit; and
A rotation guide part is fixed to the inner wall, includes a bracket formed in an 'L' cross-sectional shape, is spaced apart from the inner wall at a predetermined distance, each of the mounting fixtures is rotatably mounted, and is formed in the shape of an octagonal frame. Fire damper including more.
According to paragraph 1,
It is installed in the inner space of the duct and further includes a hollow connecting body having an octahedral-shaped inner wall,
The blocking portion is rotatably coupled to each inner wall of the connecting body,
A fire damper in which each inner wall of the connection body is formed in a stepped structure to support the blocking portion when it is deployed.
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