KR20220138496A - Double screen fire shutter with fire extinguishing function - Google Patents

Abstract

The present invention relates to a double-screen fire shutter with a fire extinguishing function, which can prevent damage and spread when an emergency occurs, comprising: a shutter box formed with a slat inlet; a slat driving unit built into the shutter box; a slat for opening and closing an internal passage of a building; and a lower bar.

Description

Double screen fire shutter with fire extinguishing function

The present invention relates to a double screen fire shutter having a fire extinguishing function, wherein a slat of a two-row screen structure wound in a roll form in a shutter box installed in a passageway of a building structure is stably secured according to the lowering operation of the lower load bar. It relates to a double screen fire shutter with a fire extinguishing function that can prevent damage and spread in the event of an emergency such as a fire by securing a physical space inside the slat with unfolding.

In general, fire shutters are installed in passages inside buildings, and in case of a fire, they block the entry of outsiders into a specific space and prevent the spread of flames, smoke, toxic gases, etc. That is, the conventional fire shutter is one of the fire-resistant structures installed so that the fire does not spread throughout the interior of the building in case of a fire, and it suppresses the entry of external people into a specific space and at the same time prevents flames, smoke, and toxic gases. It is used as a means to prevent the spread from the ignition point by blocking harmful factors in advance. In addition, physical means and evacuation time are provided so that people in the fire space or fire space can be evacuated quickly and safely by the fire shutter.

In order to evaluate performance and safety, and to minimize human or material damage, such fire shutters must satisfy various requirements such as fire resistance, impact resistance, and fire resistance through fire resistance tests and flame resistance tests assuming a fire situation, especially in department stores. However, in shopping malls and convention halls, the installation is compulsory according to the Fire Act. Moreover, in recent years, there is a trend to adopt and use safety reinforcement devices to prevent safety accidents caused by fires and power outages, or to promote or plan reinforcement measures accordingly.

Here, looking at the prior art (patent document) related to the fire shutter, the Korean Patent Publication No. 10-2085438, which was previously proposed by the applicant (inventor) of the present invention (Patent Document 0001), the title of the invention A 'fire shutter with a lower roller' is known. As shown in FIG. 1, this includes a shutter box having a built-in driving device; a slat part which can be opened and closed while moving up and down by the driving device and is divided into a first slat part and a second slat part in two rows before and after binding a plurality of plate-shaped panels up and down; a pair of guide rails for guiding both edges of the slat part when the slat part moves up and down; and a lower load bar mounted on the lower part of the slat part and moving up and down according to the elevation of the slat part, wherein the lower load bar includes a rotating member having a plurality of rollers in a line at a predetermined interval on a rotating shaft. It is located at the boundary crossing the first slat part or the second slat part and rotates according to the elevation of the slat part, and includes a support plate for holding both sides of the rotation member, and a bottom plate for connecting the lower part of the support plate, , When one side of the first slat part is fixed in the shutter box and one side of the second slat part is moved up and down, the lower load bar at the boundary between the first slat part and the second slat part serves as a pulley and the slat part is raised and lowered (昇降). ) and pull the slat part taut downward by the load of the lower load bar, and the gap between the first and second slat parts is maintained at least larger than the diameter of the roller to suppress the spread of flame in case of fire. configuration to secure.

Accordingly, the above (Patent Document 0001) has a slat portion (first and second slat portions) and a lower rod in a state of being wound in a 'U' shape on a rotating shaft and a plurality of rollers provided up and down in the upper driving device and the rotating member. It moves up and down while interlocking with the rotational driving force of the driving device. When the lower load bar is raised and lowered, the slat part is wound in a 'U' shape on the upper and lower rotating shafts and a plurality of rollers, and the first slat part and the second slat part Since the lower load bar at the boundary acts as a pulley and the slat part is lifted and wound or unwound, the rotational friction (resistance) force increases, so there is a problem that the risk of overload is high and the risk of malfunction is high. In addition, since the lower bar is deflected in a 'U' shape, the slat part is rolled up or unrolled in one direction by the upper drive device. cause In addition, the composition of the components such as the lower load bar, the rotating shaft and the rollers is complex, and the weight of the device is increased, the volume is enlarged, the installation area is relatively enlarged, the space efficiency is lowered, and the energy consumption of the driving device is increased. There were inefficient and inefficient problems such as poor efficiency and increased production and installation costs as well as production costs.

Korean Patent Publication No. 10-2085438, title of invention 'Fire shutter with lower roller' (Registration date February 28, 2020)

It is an object of the present invention to ensure that the front and rear screens (front screen and rear screen) are spaced apart at regular intervals without overlapping each other by a single shaft built into the shutter box to secure a physical space inside the slat, and have excellent heat shielding properties, Double-screen fire protection with fire extinguishing function that allows stable lifting and lowering while the lower bar is horizontally maintained by correcting (adjusting) the upper and lower step (G) of the T bar that occurs at the bottom of the front screen and the rear screen. It is to provide a shutter.

Another object of the present invention is to provide a double-screen fire protection shutter capable of reducing fire damage by providing a fire extinguishing agent case in the shutter box and automatically releasing the extinguishing agent while the cover is opened by the flame (heat) when a fire occurs. is in

A double screen fire shutter with a fire extinguishing function of the present invention to achieve the above object, the shutter box having a slat inlet and outlet formed on the bottom; a slat driving unit built into the shutter box; a slat for opening and closing the inner passage of the building while moving up and down along the guide rails on both sides by the slat driving unit; It includes; a lower bar mounted on the lower part of the slat, wherein the shutter box further includes a fire extinguishing agent case provided inside the slat inlet and out with a fire extinguishing agent, the fire extinguishing agent case fixing one side of the lower cover, As the heat-melting joint is dissolved by the flame (heat) of the fire and the fixation is released, the cover is opened to release the extinguishing agent inside, and the slat is a first screen and a second in two rows divided into front and rear One end of the screen is coupled to the shaft and wound in the circumferential direction, and a first T-bar coupled to the lower end of the first screen, and a second T-bar coupled to the lower end of the second screen are further added. Including, in the lower bar, a front portion connected to the first T-bar and a rear portion connected to the second T-bar are formed to be horizontally spaced apart from each other at regular intervals before and after, the first screen and the second As the screen is simultaneously wound on the shaft, due to the vertical step difference between the first T-bar and the second T-bar, a front and back inclination is generated in the lower length bar. It is characterized in that it is possible to adjust the inclination so that the lower length bar is maintained horizontally by varying the height.

In addition, according to the present invention, the horizontal adjustment unit includes a bolt that is vertically through-coupled to one side of the second opening on the upper surface of the rear portion and is in close contact with the second T-bar, wherein the bolt includes the first and second openings of the first and second openings. It is characterized in that the second opening is adjusted to be parallel to the front first opening by moving in a straight line by the step.

In addition, according to the present invention, it is installed side by side with the shaft between the shaft and the slat entrance and characterized in that it comprises a screen guide for separating the front and rear intervals between the first screen and the second screen.

In addition, according to the present invention, the shutter box is characterized in that it is provided with a non-combustible flame-retardant gasket that is inserted between the upper attachment surface and the building finishing surface to block the leakage of flame or smoke due to a fire.

The present invention has a simple configuration that can roll up two rows of screens (front screen and rear screen) at once with one shaft or unwind them in reverse, making it easy to manufacture and install, so productivity is improved, and production and production and installation costs are reduced. It is economical because it is cheap, and it is very efficient because it is easy to operate and there is no risk of failure.

In particular, the present invention corrects (adjusts) the upper and lower steps (G) of the lower tee (T) bars of the front screen and the rear screen that occur when the second row of screens are wound at the same time with the horizontal adjuster, so that the lower bar is smooth in a horizontally stable state. Elevating operation is possible and there is no fear of malfunction, so it is possible to respond quickly in case of an emergency such as a fire. .

And, the present invention does not overlap each other according to the guidance of the screen guide even if the front and rear two-row screens are rolled up or lowered at once, and a physical space is secured inside the front and rear two-row screens (slats) that are sufficiently spaced apart to secure flame (heat) It can effectively block smoke and impact forces.

In addition, the present invention has the effect that the extinguishing agent case automatically releases the extinguishing agent by the flame (heat) of the fire to quickly extinguish the fire, as well as minimize the damage and spread of the fire.

In addition, the present invention reduces the risk of a fall accident because the slats (first and second screens) are lightweight, and can be installed in a large size even in a section with a wide passage (20M or more), and can be installed even if the ceiling height is low, and the volume By reducing the size, the installation area can be minimized and the space utilization can be increased. In addition to the evacuation direction, the bidirectional opening and closing function enables emergency escape (even if the screen is down, it is possible to escape by lifting the load bar, and the elderly, women, and children can easily escape because the emergency door is light). There is no strain (additional load) on the lower floors of tall buildings, and there is no risk of burns in areas other than the heat-applied area due to extremely low thermal conductivity, so it is very safe.

In addition, the present invention has the advantage of efficiently blocking flames, high heat, wind heat, smoke, and toxic gases caused by fire by providing a non-flammable flame-retardant gasket in the contact portion with the upper surface of the shutter box (CL).

1 (a), (b) is a front view and a side view showing a known fire shutter according to the prior art.
Figure 2 is a front view of the double screen fire shutter 100 having a fire extinguishing function according to an embodiment of the present invention.
3 is a cross-sectional view taken along line "A" - "A" of FIG. 2 .
4 is an enlarged side view of the main part of the double-screen fire shutter 100 according to an embodiment of the present invention.
FIG. 5 shows when the first screen 131 and the second screen 132 having a two-row structure are wound simultaneously in one direction on the upper shaft 124, the first T bar (131t) bar and the second screen at the bottom of the screen. It is a view expressing the upper and lower step G generated between the T-bars 132t, and the front-rear inclination θ of the lower length bar 140 due to the step G.
6 is a cross-sectional side view illustrating a state in which the lower load bar 140 is horizontally maintained by one side leveling unit 150 according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

The terminology used herein is for the purpose of referring to specific embodiments only, and is not intended to limit the present invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. The meaning of "comprising," as used herein, specifies a particular characteristic, region, integer, step, operation, element and/or component, and other specific characteristic, region, integer, step, operation, element, component, and/or group. It does not exclude the existence or addition of

Although not defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Commonly used terms defined in the dictionary are additionally interpreted as having a meaning consistent with the related technical literature and the presently disclosed content, and unless defined, are not interpreted in an ideal or very formal meaning.

The embodiments of the present invention described with reference to the drawings specifically represent ideal embodiments of the present invention. As a result, various modifications of the diagram are expected. Therefore, the embodiment is not limited to a specific shape of the illustrated area. Regions shown or described as being flat may have a generally spanning and/or non-linear nature.

Also, portions shown as having sharp angles may be rounded. Accordingly, the regions shown in the drawings are only approximate in nature, and their shapes are not intended to depict the exact shape of the regions, nor are they intended to narrow the scope of the present invention.

It is noted that the drawings are schematic and not drawn to scale. Relative dimensions and proportions of parts in the drawings are shown exaggerated or reduced in size for clarity and convenience in the drawings, and any dimensions are illustrative only and not limiting. And the same reference numerals are used to indicate corresponding or similar features in different embodiments to the same structures, elements, or parts appearing in two or more drawings.

2 is a front view of a double screen fire shutter 100 having a fire extinguishing function according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line "A" - "A" of FIG. 2 . And Figure 4 is an enlarged side view of the main part of the double screen fire shutter 100 according to an embodiment of the present invention. FIG. 5 shows when the first screen 131 and the second screen 132 having a two-row structure are wound simultaneously in one direction on the upper shaft 124, the first T bar (131t) bar and the second screen at the bottom of the screen. It is a view expressing the upper and lower steps G generated between the T bars 132t, and the front and rear inclination θ of the lower length bar 140 due to the step G. 6 is a cross-sectional side view illustrating a state in which the lower load bar 140 is horizontally maintained by the one-side horizontal adjustment unit 150 according to an embodiment of the present invention.

According to the above drawing, the double-screen fire-fighting shutter 100 with a fire extinguishing function of the present invention according to the present invention comprises: a shutter box 110 having a slat inlet 112 formed on a bottom surface thereof; a slat driving unit 120 built in the shutter box 110; a slat 130 for opening and closing the inner passage of the building while moving up and down along both guide rails 114 by the slat driving unit 120; Including; and the shutter box 110 is provided on the inside of the slat inlet 112 and the fire extinguishing agent case 160 containing the fire extinguishing agent (D). ) is further included, and the fire extinguishing agent case 160 is released by dissolving the heat dissolving joint 163 fixing one side of the lower cover 161 by the flame (heat) of the fire. The cover 161 is opened to release the fire extinguishing agent (D) inside, and the slat 130 has two rows of the first screen 131 and the second screen 132 divided into front and rear ends of the shaft 124 ) and wound in the circumferential direction, a first tee (T) bar 131t coupled to the lower end of the first screen 131, and a second tee coupled to the lower end of the second screen 132 ( It further includes a T) bar 132t, and the lower body bar 140 is disposed on the front portion 141 connected to the first T-bar 131t and the second T-bar 132t. The connected rear part 142 is formed to be horizontally spaced apart at regular intervals before and after, and the first tee (T) as the first screen 131 and the second screen 132 are wound around the shaft 124 at the same time. ) bar 132t and the second tee (T) bar 132t is provided on one side of the rear part 142 because the front and rear inclination θ is generated in the lower load bar 140 due to the upper and lower step G of the bar 132t. It is characterized in that it is possible to adjust the inclination (θ) so that the lower length bar 140 is maintained horizontally by varying the height of the rear part 142 with the horizontal adjustment unit 150 .

In addition, according to the present invention, the horizontal adjustment unit 150 is vertically through-coupled to one side of the upper surface second opening 142h of the rear portion 142 to be in close contact with the second T-bar 132t. (150b); and the bolt 150b moves in a straight line by the step G of the first and second openings 141h and 142h so that the second opening 142h is connected to the front first opening 141h. It is characterized in that it is adjusted to be parallel.

In addition, according to the present invention, the screen is installed side by side with the shaft 124 between the shaft 124 and the slat inlet 112 to space the front and rear intervals between the first screen 131 and the second screen 132 . It is characterized in that it includes a guide (165).

In addition, according to the present invention, the shutter box 110 is provided with a non-flammable flame-retardant gasket 170 that is inserted between the upper attachment surface and the building finishing surface (CL) to block the leakage of flame or smoke due to fire. do.

The above is described in more detail as follows.

First, the double screen fire shutter 100 having a fire extinguishing function according to an embodiment of the present invention is for preventing the spread of flame or smoke due to fire, and includes a shutter box 110, a slat driving unit 120, a slat ( 130 ) and a lower length bar 140 , and the lower length bar 140 includes a first T-bar 131t and a second T-bar 132t , and a horizontal adjustment unit 150 .

As shown in FIGS. 2 to 4, the shutter box 110 has a rectangular box shape with an empty interior having a predetermined length and a predetermined width on one side, and the slat driving unit 120 is built-in, and the lower side is a slot. (Slot) A downwardly opened slat inlet 112 is formed. The shutter box 110 is installed on the upper part of the installation space created in the building structure in which the passage is formed, and when an emergency such as a fire occurs, the slat 130 is lowered to block the passage, thereby preventing damage and spread of fire. . The shutter box 110 may be provided with a gasket 113 in the middle of the slat inlet 112 to block the inflow of foreign substances into the box.

The slat driving unit 120 is a device that provides rotational power like the electric motor 122, and receives power from the outside to rotate the slat (Slat, 120) to be described later to roll up or unwind. The electric motor 120 transmits the rotational power of the motor to the shaft 124 through a power transmission unit 126 such as a chain 126c and a sprocket 126s to rotate the motor. Meanwhile, the power transmission unit 126 includes a belt, a pulley, a gear box, and the like, and the slat driving unit 120 in the present invention is a known general technique and a detailed description thereof will be omitted.

The slat 130 is a means for substantially opening and closing the passage of the building structure, and is normally moved upward by the slat driving unit 120 and rolled up in a roll form on the shaft 124 in a rolled state shutter box ( 110) is stored in In an emergency such as fire or when necessary, it is possible to block the passage while descending by the slat driving unit 120 to the lower part.

In particular, the slat 130 proposed by the present invention can be configured in two rows before and after it is divided into a first screen 131 formed in the front and a second screen 132 formed in the rear, the first screen 131 and The second screen 132 may extend downward by being fixed to the shaft 124 at the upper end of the second screen 132 in a state of being superimposed forward and backward. On the other hand, the slat 130 can be divided into multiple columns of 3 to 4 columns, ... n columns, thereby securing more physical space in the space between each screen, as well as improving damage and diffusion efficiency from fire. .

The slat 130 has several advantages as the first screen 131 and the second screen 132 are made of a fire-resistant silica screen. In other words, it is lightweight, so there is little risk of a fall accident, and it can be installed in a large size in a section with a wide passage width (more than 20M), and can be installed even when the ceiling height is low. In addition to the evacuation direction, the bidirectional opening and closing function enables emergency escape (even if the screen is down, it is possible to escape by lifting the load bar, and the elderly, women, and children can easily escape because the emergency door is light). It is very safe because there is no strain (additional load) on the lower floors of tall buildings, and there is no risk of burns in areas other than the heat-applied area due to extremely low thermal conductivity.

Next, guide rails 114 for guiding both edges of the slat 130 during vertical movement of the slat 130 are provided. The guide rails 114 are installed side by side in the longitudinal direction on both sides of the passage of the building structure and on both sides of the shutter installation space in order to guide the upward and downward movement of the slat 130 . As shown in the enlarged view of FIG. 3 , the guide rail 114 is formed with a 'T'-shaped guide groove 115 spaced apart from each other at regular intervals on the inner surfaces facing each other. The first and second screens 131 and 132 have both ends inserted into the guide grooves 115 in the longitudinal direction, respectively, and the separation prevention devices 116 are coupled at regular intervals up and down to slide up and down along the guide grooves 115 . It is possible. On the other hand, the guide rail 114 is firmly fixed to the building finish surface (C.L) with an anchor bolt, and a gasket (170) is inserted between the contact surface and the building finish surface (C.L) to prevent smoke or flames from fire. can be completely blocked.

The lower bar 140 is mounted on the lower end of the slat 130 so that it can ascend and descend and descend to be seated on the passage floor surface (G.L). As shown in FIGS. 3 to 5, the lower bar 140 has a front portion 141 and a rear portion 142 on the upper surface that are horizontally spaced apart from each other at regular intervals to form a first tee (T) bar 131t. ) and the second screen 132 are built-in, respectively. The first T-bar 131t is coupled to the lower end of the first screen 131 and the second T-bar 132t is coupled to the lower end of the second screen 132 to the lower end of the slat 130 . It will ascend and descend while hanging from the

Here, the slat 130 is a first screen 131 in a state in which the first screen 131 and the second screen 132 are wound together on the circumference (peripheral surface) of the shaft 124 as shown in FIG. 4 . The difference between the first radius r1 of the second screen 132 and the second radius r2 of the second screen 132 is generated at the lower first T bar 132t and the second T bar 132t of the screen. An upper and lower step (G) occurs. For this reason, the front and rear inclination (θ) is generated in the lower bar 140 and is provided with an inclination, so the slat inlet 112 of the shutter box 110 is not aesthetically good and is unstablely seated on the floor surface. Accordingly, the lower bar 140 can be maintained horizontally by adjusting the inclination θ with the horizontal adjusting unit 150 provided on one side of the upper surface of the rear part 142 .

The horizontal adjustment unit 150 includes a bolt 150b that is vertically through-coupled to one side of the upper surface second opening 142h of the rear portion 142 to be in close contact with the second T-bar 132t. As the bolt 150b is tightened in the rotational direction (forward direction) in a state in close contact with the second T-bar 132t, the rear portion 142 is pressed to the front portion ( 141), it rises side by side and becomes horizontal. At this time, the second opening 142h and the first opening 141h are adjusted so that the second opening 142h and the first opening 141h are parallel by moving the bolt 150b in a straight line as much as the step G between the first and second openings 141h and 142h, and keep your balance

Next, the extinguishing agent case 160 contains the extinguishing agent (D) therein, and as shown in FIGS. 3 and 4 , it is provided in the inner slat entrance 112 of the shutter box 110 to cause a fire. , it is possible to quickly respond to a fire by releasing a fire extinguishing agent. The extinguishing agent case 160 is sealed by blocking the bottom outlet with a cover 161 in which a certain amount of extinguishing agent is contained in the case. The cover 161 may be connected to one side of the lower outlet of the fire extinguishing agent case 160 by a hinge 162 and the other side may be fixed with a heat dissolving joint 163 . When a flame (heat) is applied to the thermal melting joint 163, the joint is melted and the fixing of the cover 161 is released. can

On the other hand, the extinguishing agent (D) is excellent in the ability to remove one or more of the four combustion elements, and includes a water-based extinguishing agent such as water or a foaming agent, carbon dioxide or a halogen compound, and a gas-based extinguishing agent such as a powder, A detailed description thereof will be omitted. In addition, the thermally melted joint portion 163 includes solder, adhesive, synthetic resin, and the like that melts when heat is applied above a certain temperature.

The slat 130 is as shown in FIGS. 3 and 4, according to the guidance of the screen guide 165 and the extinguishing agent case 160 provided in the inner slat entrance 112 of the shutter box 110 (that is, , the small promise case 160 of the present invention has a fire extinguishing function and also serves as a screen guide) The front and rear intervals between the first screen 131 and the second screen 132 are spaced apart so that a constant in the slat 130 is provided. Physical space can be secured. That is, the slat 130 has one end (top) of the first screen 131 and the second screen 132 coupled to the shaft 124 and overlapped in a wound state, so the screen guide 165 and the extinguishing agent case In accordance with the guidance of (160), it may be possible to ascend and descend vertically by being spaced apart at regular intervals before and after. On the other hand, the fire extinguishing agent case 160 is formed in a slanted inclined surface or streamlined shape with one side corresponding to the moving direction of the second screen 132 to smoothly slide into contact.

More specifically, at least one or a plurality of screen guides 165 are horizontally provided between the slat inlet 112 and the shaft 124 so that the screen spans in the moving direction. Accordingly, the first screen 131 moves in the vertical straight direction by its own weight, and the second screen 132 is spread over the screen guide 165 and the extinguishing agent case 160 in an 'S' shape to the first screen ( 131), spaced apart from each other by a certain distance, and can ascend and descend side by side. At this time, the fire extinguishing agent case 160 is installed so that the end of the right inclined surface corresponds to the rear opening 142h of the hajang bar 140 so that the second screen 132 can be lifted in the vertical direction. Meanwhile, the screen guide 165 may include a friction force reducing means such as a bearing to minimize sliding friction (resistance) with the first and second screens 131 and 132 .

In addition, the shutter box 110 inserts a non-flammable flame-retardant gasket 170 between the upper attachment surface and the building finishing surface (CL) to cause a fire in the building structure, such as flames or smoke, high heat, wind heat and toxic gas according to the fire. It is possible to prevent the spread of damage by effectively blocking and shielding from heat. The gaskets 113 and 170 are made of a material that can withstand a flame or high temperature (heat) well, and may be made of a non-flammable (fire-resisting) and airtight excellent glass fiber, or a flame-retardant material such as glass fiber or graphite.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may make various modifications, changes and substitutions within the scope without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: fire shutter, 110: shutter box, 120: slat driving unit, 130: slat, 140: hajang bar, 150: horizontal adjustment unit, 160: extinguishing agent case, 170: gasket

Claims (4)

In the double screen fire shutter with fire extinguishing function,
Shutter box 110 having a slat entrance 112 formed on the bottom;
a slat driving unit 120 built in the shutter box 110;
a slat 130 for opening and closing the inner passage of the building while moving up and down along both guide rails 114 by the slat driving unit 120;
and a bottom bar 140 mounted on the lower portion of the slat 130
The shutter box 110 is provided inside the slat inlet 112 and further includes a fire extinguishing agent case 160 containing a fire extinguishing agent (D), and the fire extinguishing agent case 160 is the lower cover of the 161 . As the thermal melting joint 163 fixing one side is dissolved by the flame (heat) of the fire and the fixing is released, the cover 161 is opened to release the fire extinguishing agent (D) inside,
The slat 130 is wound in the circumferential direction by coupling one end of the first screen 131 and the second screen 132 in two rows divided back and forth to the shaft 124 , and the lower end of the first screen 131 . Further comprising a first T-bar (131t) coupled to, and a second T-bar (132t) coupled to the lower end of the second screen (132),
The lower bar 140 has a front portion 141 connected to the first T-bar 131t and a rear portion 142 connected to the second T-bar 132t at regular intervals before and after. It is formed horizontally spaced apart from
The upper and lower steps of the first T bar 132t and the second T bar 132t as the first screen 131 and the second screen 132 are wound around the shaft 124 at the same time. Due to (G), the front and rear inclination θ is generated in the lower load bar 140 , so the height of the rear part 142 is varied with the horizontal adjustment part 150 provided on one side of the rear part 142 . A double screen fire shutter with a fire extinguishing function, characterized in that the inclination (θ) can be adjusted so that the lower bar 140 is maintained horizontally. The method of claim 1,
The horizontal adjustment unit 150 includes a bolt 150b that is vertically coupled to one side of the upper surface second opening 142h of the rear portion 142 to be in close contact with the second T-bar 132t; do,
The bolt 150b moves in a straight line by the step G between the first and second openings 141h and 142h so that the second opening 142h is adjusted to be parallel to the front first opening 141h. Double screen fire shutter with fire extinguishing function. The method of claim 1,
A screen guide 165 installed side by side with the shaft 124 between the shaft 124 and the slat inlet 112 to space the front and rear intervals between the first screen 131 and the second screen 132 is included. Double screen fire shutter with fire extinguishing function, characterized in that. The method of claim 1,
The shutter box 110 has a fire-extinguishing function, characterized in that it is provided with a non-combustible flame-retardant gasket 170 that blocks the leakage of flame or smoke due to a fire by putting it between the upper attachment surface and the building finishing surface CL. screen fire retardant.

Images