KR102378069B1 - System for Preventing Spread of Fire at Outer Wall - Google Patents

Abstract

The present invention is to provide a system for preventing the spread of outer wall fire that does not require installation of a lattice-shaped frame structure. According to the present invention, the system for preventing the spread of outer wall fire comprises: a fire-resistant module (10) which is fixed on an outer wall of a building (1) through a strip-shaped space (3) extending horizontally between an upper insulation board (2a) and a lower insulation board (2b) fixedly installed on the outer wall of the building (1), and has a 'C'-shaped cross-section extending horizontally to prevent vertical spread of fire; and a heat-insulating module (20) surrounded by the 'C' shape of the fire-resistant module (10) and seated in a storage space (14) with an open front side, coupled to the fire-resistant module (10), and filled with a heat-insulating material.

Description

System for Preventing Spread of Fire at Outer Wall

The present invention relates to an exterior wall fire diffusion prevention system, and more particularly, to an exterior wall fire diffusion prevention system for preventing or delaying the spread of fire in the event of a fire in a building in which an insulating material or heat insulating material is used on the exterior wall of the building.

In general, in public buildings or commercial buildings, there are many buildings that use Styrofoam as an insulator and have exterior walls finished with wire mesh on it (dry-bit method). Although it has a great effect on insulation, fire spreads through the insulation in case of fire, and the spread is fast, causing a lot of damage. Also, as seen in the Ulsan mixed-use building fire, it was found that even semi-incombustible insulation materials are difficult to delay the fire at high temperatures.

In general, insulators made of non-combustible materials have poor insulation performance, and semi-non-combustible materials are often used. However, if the fire temperature is 500 degrees or higher, vertical diffusion occurs relatively quickly due to the nature of the material, and toxic gas is generated, causing great damage. the current situation. In the event of a fire on the outer wall of a building, even in a high-rise building, the fire spreads from the first floor to the highest floor due to wind speed, thus drastically reducing the effect of inter-floor fire prevention inside the building. In particular, if a fire occurs between the concrete (R/C) wall and the insulation in a building where dry bits and semi-non-combustible insulation are used, or if a fire inside the building reaches the insulation of the exterior wall through the windows, the fire can spread vertically in an instant. . Therefore, it is necessary to minimize the damage to life and property by preventing or delaying the spread of fire due to the insulating material of the outer wall, and several types of vertical diffusion prevention technology are known.

For example, in the technology of Patent Document 1, a coupling portion 110 made of a flame retardant resin material and coupled to the frame 10 installed at intervals on the outer wall surface of the building (110; hereinafter referred to as reference numerals in Patent Document 1); It is made of a flame-retardant resin material, and is formed to extend toward the outer wall surface of the building in the coupling part, and fills the gap between the outer wall surface of the building and the frame, and blocks the flame and smoke from spreading upward (120) , wherein the coupling part is seated on the upper surface of the frame, and the diffusion prevention part 120 is integrally formed at one end of the coupling part 110 and is formed between the frame 10 and the outer wall surface of the building. An elastic support unit that is inserted into the diffusion prevention unit 120 and elastically supports the coupling portion and the diffusion prevention portion with respect to the exterior wall surface of the building and the frame while in elastic contact with the outer wall surface of the building or one side of the frame is installed characterized in that

However, in the technology of Patent Document 1, it is premised that the frame 10 of each pipe (profile) is installed in a grid shape on the outer wall of the building, so it is not applicable to the external insulation system of the type in which the angular pipe (profile) is not installed. There is an impossible problem.

On the other hand, in the technology of Patent Document 2, a plurality of heat insulating panels are fixedly installed on the outer wall of a building (1; hereinafter referred to as reference numerals in Patent Document 2) so that a plurality of them are vertically spaced apart from each other to form a spaced space S in the vertical direction. (2a, 2b); a first fire prevention board (3) inserted into the separation space (S) so that the front end thereof coincides with the front surface of the heat insulating panel (2a, 2b); a second fire board (4) inserted into the separation space (S) to overlap the first fire board (3) and provided so that the rear end is in close contact with the outer wall (1) side of the building; and a lower plate 51 provided inside the separation space S and mounted on the upper end of the lower heat insulating panel 2a, vertically bent from the rear end of the lower plate 51 to the upper side, and in close contact with the front of the building outer wall 1 It is composed of a rear plate 52 to be a rear plate 52 and an upper plate 53 that is vertically bent forward from the upper end of the rear plate 52 and on which the upper heat insulating panel 2b is mounted, and between the lower plate 51 and the upper plate 53 . A fire barrier structure for preventing diffusion is disclosed, which is composed of a fire board fixture (5) in which the first fire board (3) and the second fire board (4) are accommodated in the space.

By the way, in order for the fire barrier structure for prevention of diffusion of Patent Document 2 to work effectively, the thickness of the fire board (the thickness of the sum of the thicknesses of the first fire board and the second fire board), that is, the height of the fire board, must prevent the spread of fire. It needs to be enough to (delay). However, if sufficient thickness is secured, the thermal insulation performance of the fire board is inevitably lowered relatively, and the thermal bridge phenomenon through the fire board becomes severe. Conversely, if the thickness of the fire protection board is thinned to minimize the thermal bridge phenomenon, the diffusion prevention performance is inevitably reduced due to the short distance between the upper and lower insulation boards. According to the technology of Patent Document 1, there is a problem in that the maintenance of insulation performance and the performance of preventing the spread of fire are inevitably conflicting with each other.

1. Republic of Korea Patent No. 1997849, Korea Institute of Construction Technology, "Gasket structure for preventing vertical fire spread and vertical fire spread prevention type external insulation system using the same" 2. Republic of Korea Patent No. 2257905, Middle East Construction, "Fire barrier structure for preventing the spread of fire between floors with external insulation and its construction method"

SUMMARY OF THE INVENTION It is an object of the present invention to provide a system for preventing the spread of external wall fire that does not require installation of a lattice-shaped frame structure.

Another object of the present invention is to provide an exterior wall fire prevention system capable of sufficiently preventing or delaying vertical spread of fire while maintaining thermal insulation performance or minimizing deterioration in thermal insulation performance.

Exterior wall fire diffusion prevention system according to an aspect of the present invention is a strip-shaped space (3) extending horizontally between the upper insulation board (2a) and the lower insulation board (2b) that are fixedly installed on the outer wall of a building (1) Through the, a fire resistant module (10) fixed to the outer wall (1) of the building and configured to extend horizontally in a 'C'-shaped cross-section to block the vertical spread of fire; A heat insulating module 20 surrounded by a 'C' shape of the fire resistant module 10 and seated in a storage space 14 with an open front side, coupled with the fire resistant module 10, and filled with a heat insulating material; It is characterized in that it is configured to include.

In the above-described external wall fire prevention system, the fire resistant module 10 includes an upper fire resistant layer, a vertical fire resistant layer, and a lower fire resistant layer connected to each other in a 'C' shape. The layer 11 is characterized in that it is configured to include a refractory material casing 12 configured in a shape to surround the filling space filled with a metal plate material.

In the above-described external wall fire prevention system, the fire resistant module 10 is formed by applying a fire protection spray to at least the bottom surface of the fire resistant casing 12 that will face the upper surface of the lower insulation board 2b. It is characterized in that it further comprises a layer (13).

In the above-described external wall fire prevention system, the upper refractory layer, the vertical refractory layer and the lower refractory layer of the barrier refractory layer 11 may be made of ceramic wool.

In the above-described external wall fire prevention system, the heat insulating module 20 includes a heat insulating material block 21 in which the heat insulating material is formed in a rectangular column shape, and a heat insulating material casing configured to surround the heat insulating material block 11 with a metal plate. (22) may be included.

In the above-described external wall fire diffusion prevention system, the insulating material block 21 may be made of a PF board, urethane or glass wool.

In the above-described external wall fire prevention system, the fire resistant casing 12 includes a first upper plate 12a, a first vertical plate 12b and a first lower plate 12c connected to each other to form a 'C' shape; The first upper plate 12a, the first vertical plate 12b, and the first lower plate 12c are spaced apart from each other, and a second upper plate 12d connected to each other to form a 'C' shape, the second number a direct plate 12e and a second lower plate 12f; A first front plate 12g that connects and finishes the front end of the first upper plate 12a and the front end of the second upper plate 12d, the front end of the first lower plate 12c and the second lower plate ( 12f) may be configured to include a second front plate (12h) that is closed by connecting the front end.

In the above-described external wall fire diffusion prevention system, the fire resistant module (10) using a first fastening means (31) penetrating through holes formed in the first vertical plate (12b) and the second vertical plate (12e). ) is fixed to the outer wall of the building 1, and the heat insulation module 20 is connected to the fire resistant module by using a second fastening means 32 penetrating through holes configured on the front and rear surfaces of the heat insulation module 20. (10) can be fixed.

In the above-described external wall fire prevention system, a non-combustible gasket 40 filled in a gap between the rear surface of the fire-resistant casing 22 and the building exterior wall 1; may further include.

In the above-described external wall fire prevention system, it is finished with a dry bit layer covering the exposed front surfaces of the fire resistant module 10 and the heat insulating module 20 at once, or the fire resistant module 10 and the heat insulating module 20 It can be finished with a slim stone panel covering the exposed front.

The construction method of an exterior wall fire diffusion prevention system according to an aspect of the present invention includes a first step of partially removing the existing exterior material layer 4 of a building to expose the lower insulation board layer 2; A strip-shaped space 3 extending horizontally from the insulation board layer 2 and exposing the outer wall 1 of the building by partially removing the insulation board layer 2 fixedly installed on the exterior wall 1 of the building. ) a second step to secure; a third step of fixing the receiving space 14 facing the front and the fire resistant module 10 having a fire resistant function to the exposed outer wall 1 of the building so as to be seated in the separation space 3; and a fourth step of fixing the heat insulating module 20 having a heat insulating function so as to be seated in the receiving space 14 of the fire resistant module 10 .

In the construction method of the external wall fire diffusion prevention system, the existing exterior material layer (4) is a dry bit layer, and after the fourth step of fixing the heat insulation module (20), the exposed fire resistance module (10) and a fifth step of partially constructing a dry bit layer that covers the front surface of the heat insulation module 20 and is connected to the dry bit layer of the existing exterior material layer 4 .

In the construction method of the above-described external wall fire prevention system construction method, after the fourth step of fixing the heat insulation module 20, a slim stone material to cover the entire surface of the exposed fire resistance module 10 and the heat insulation module 20 A sixth step of finishing with a panel; may further include.

In the construction method of the external wall fire diffusion prevention system described above, in the third step, fixing the fire resistant module 10 to the exposed building external wall 1 is exposed to the rear of the storage space 14 . It can be carried out using an anchor that penetrates the through hole and is installed on the outer wall of the building (1).

In the above construction method of the external wall fire prevention system, fixing the heat insulating module 20 in the fourth step penetrates the front and rear surfaces of the heat insulating module 20 and is fixed to the fire resistant module 10 It can be performed using a piece that becomes

In the construction method of the external wall fire diffusion prevention system described above, before the third step, a fire protection sealant is applied to the exterior wall 1 of the building exposed through the separation space, and the A seventh step of forming a non-combustible gasket 40 in a gap between the building exterior walls 1; may further include.

In the above construction method of the external wall fire prevention system, the fire resistant module 10 has a 'C'-shaped cross-sectional shape with the storage space extending horizontally, and an upper fireproof material layer, a vertical fireproof material layer and a lower fireproof material A barrier refractory material layer 11, the layers of which are connected to each other in a 'C' shape, and a refractory material casing 12 configured to surround the filling space filled with the barrier refractory material layer 11 with a metal plate. there is.

In the above construction method of the external wall fire prevention system, the fire resistant module 10 may further include a fire resistant coating layer 13 formed by applying a fire spray spray to at least the bottom surface of the fire resistant casing 12. there is.

In the construction method of the external wall fire diffusion prevention system, the heat insulating module 20 includes a heat insulating material block 11 in which the heat insulating material is configured in a rectangular column shape, and a metal plate material to surround the heat insulating material block 11. It may be configured to include a configured insulating material casing (12).

The external wall fire diffusion prevention system and construction method according to the present invention has the advantage that the diffusion prevention barrier 100 is directly fixed to the exterior wall of the building, so that it is not necessary to install a lattice-shaped frame structure.

In addition, the external wall fire diffusion prevention system and construction method according to the present invention have the advantage of sufficiently preventing or delaying the vertical spread of fire while maintaining thermal insulation performance or minimizing deterioration of thermal insulation performance.

In addition, the external wall fire diffusion prevention system and construction method according to the present invention can establish a multi-layered diffusion prevention mechanism, and secure a sufficient separation distance between the upper and lower insulation boards, so that the flame of the lower insulation board is transmitted to the upper insulation board It has the effect of preventing or reducing the possibility of reaching

In addition, the external wall fire diffusion prevention system and construction method according to the present invention has an effect that it is possible to completely block the gap leading to the upper part by the non-combustible gasket and the fire-resistance coating layer (and the rear surface of the fire-resistant module) in close contact with the non-combustible gasket. .

1 shows a situation in which the external wall fire prevention system according to an embodiment of the present invention is applied, and FIG. 1 (a) is a front view, and FIG. 1 (b) is a partial cutaway view.
2 is a perspective view showing the fire resistant module 10 and the heat insulating module 20 separated from the external wall fire diffusion prevention system according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a situation after the external wall fire diffusion prevention system according to an embodiment of the present invention is constructed.
4 is a cross-sectional view illustrating a state after the existing exterior material layer 4 and the insulation board layer 2 are removed.
5 is a cross-sectional view illustrating a state after the non-combustible gasket 40 is applied to the exterior wall 1 of the building.
6 is a cross-sectional view illustrating a state in which the fire resistant module 10 is mounted.
7 is a cross-sectional view illustrating a state in which the heat insulation module 20 is fixed to the fire resistant module 10 .
8 is a cross-sectional view illustrating a state after the finishing stripe 50 is constructed.

1 shows a situation in which the external wall fire diffusion prevention system according to an embodiment of the present invention is applied, and FIG. 1 (a) is a front view, and FIG. 1 (b) is a partial cutaway view. 2 is a perspective view showing the fire resistant module 10 and the heat insulating module 20 separated from the external wall fire diffusion prevention system according to an embodiment of the present invention. 3 is a cross-sectional view illustrating a situation after the external wall fire diffusion prevention system according to an embodiment of the present invention is constructed.

An external wall fire diffusion prevention system according to an embodiment of the present invention comprises a diffusion prevention barrier 100, a first fastening means 31, a second fastening means 32, a non-combustible gasket 40, and a finishing stripe 50. may be included. The anti-diffusion barrier 100 has a band shape extending horizontally when viewed from the front, and may have a rectangular prism shape lying horizontally. The anti-diffusion barrier 100 may be installed horizontally to surround the building at a certain height of the building or at least over a portion where the vertical fire is likely to spread. In addition, in order to prevent the continuous vertical diffusion of the internal fire through the windows (5) to the outside, the diffusion prevention barrier 100 can be installed repeatedly for each height corresponding to each floor.

When viewed from the front, it is possible to remove the existing insulation board layers (2:2a, 2b) in a horizontally extending strip shape, and install the diffusion barrier 100 in the place where the removed insulation board layer 2 was. The existing insulation board layer 2 is constructed of a plurality of boards in succession, and may be an iso-pink board, a rigid urethane board, a PF board, or an EPS board. And the finishing material layer 4 is configured on the insulation board layer 2, and it may be a dry bit coated with an adhesive mortar on a mesh (glass fiber net) or a stucco, terra coat or stone coat. Hereinafter, among the insulation board layers 2, the one in contact with the diffusion prevention barrier 100 is referred to as the upper insulation board 2a, and the one in contact with the diffusion prevention barrier 100 is referred to as the lower insulation board 2b. .

The diffusion prevention barrier 100 includes a fire resistant module 10 and a heat insulating module 20, and the heat insulating module 20 is seated and fixed in the receiving space 14 of the fire resistant module 10 opened to the front. The fire resistant module 10 has a main function to prevent vertical spread of fire, and the heat insulation module 20 has a main function to minimize the thermal bridge phenomenon through the diffusion prevention barrier 100 .

The fire resistant module 10 is spaced apart through a band-shaped separation space 3 (refer to FIG. 4 ) extending horizontally between the upper insulation board 2a and the lower insulation board 2b fixedly installed on the outer wall of the building 1 . It is directly fixed to the building exterior wall (1) in a state of being located in the space (3), and the 'U'-shaped cross-sectional shape with the opened storage space 14 facing the front is extended horizontally to prevent the vertical spread of fire. carry out

The fire resistant module 10 includes a barrier fire resistant material layer 11 having a 'C'-shaped cross section extending in the longitudinal direction (horizontal direction) and a fire resistant material casing 12 surrounding the fire resistant material layer 11 .

The barrier refractory layer 11 is composed of an upper refractory material layer 11a, a vertical refractory material layer 11b, and a lower refractory material layer 11c connected to each other in a 'C' shape, and by accommodating the refractory material in the fireproof material casing 12 ' It becomes a 'C' shape. The barrier refractory material layer 11 is composed of ceramic wool. Accordingly, the upper refractory material layer 11a, the vertical refractory material layer 11b and the lower refractory material layer 11c may be composed of a single sheet of ceramic wool.

Cerakwool has low thermal insulation performance, but it withstands a temperature of 1300℃ and has a thermal conductivity of 0.034.

The barrier refractory material layer 11 is composed of a material having a low thermal insulation performance but high fire resistance performance compared to the insulating material block 21, and the thickness of the barrier refractory material layer 11 is thin compared to the height of the insulating material block 21, for example For example, it is only 1/5 to 1/20.

The fire-resistant casing 12 is configured in a shape to surround the filling space in which the barrier fire-resistant material layer 11 is filled with a metal sheet, for example, a galvanized steel sheet, and can be manufactured by bending or roll forming a galvanized steel sheet and welding or riveting. there is. The refractory material casing 12 constitutes an inner plate as a first upper plate 12a, a first vertical plate 12b, and a first lower plate 12c which are bent to form a 'C' shape and connected to each other. And the refractory material casing 12 has a second upper plate 12d facing the first upper plate 12a with the upper refractory material layer 11a interposed therebetween, and a first vertical plate with the vertical refractory material layer 11b interposed therebetween. The outer plate is constituted by the second vertical plate 12e facing the 12b and the second lower plate 12f facing the first lower plate 12c with the lower refractory material layer 11c interposed therebetween. The second upper plate 12d, the second vertical plate 12e, and the second lower plate 12f, which are bent to form a 'C' shape and connected to each other, are a first upper plate 12a and a first vertical plate 12b, respectively. and spaced apart from the first lower plate 12c. In addition, the fire resistant casing 12 includes a first front plate 12g that connects the front end of the first upper plate 12a and the front end of the second upper plate 12d to finish, and the front end and the second end of the first lower plate 12c. 2 It is configured to include a second front plate (12h) that is closed by connecting the front ends of the lower plate (12f).

The refractory material casing is bent at least at 8 places to achieve structural stability, contains a thin barrier refractory material layer, and has a relatively high melting temperature, for example, 695°C.

And, a through hole h1 is formed in the first vertical plate 12b and the second vertical plate 12e, and after passing the first fastening means 31 through the through hole h1, it is attached to the outer wall 1 of the building. The fire resistant module 10 is fixed to the building exterior wall (1) by standing. The first fastening means 31 is, for example, an anchor (knife block). Since the gap between the first vertical plate 12b and the second vertical plate 12e is narrow, the fire resistant module 10 can be easily attached to the outer wall 1 of the building by using a fastening means such as an ordinary anchor (knife block). It is possible to install

At least the lower surface of the fire resistant module 10, that is, the lower surface of the fire resistant casing 12 that will face the upper surface of the lower insulating board 2b is coated with a fire protection spray to form the fire resistant coating layer 13. For example, the fire protection spray is CFS-SP WB, a fire protection joint spray from HILTI. The fire resistant coating layer 13 is applied to at least the entire lower surface of the fire resistant module 10, and is applied to the entire lower surface including the edge portion (bent portion). For example, the FSI (Flame Spread Index) of the fire spray is 5 and the SDI (Smoke Development Index) is 10.

The fire resistant coating layer 13 primarily blocks the flame rising on the lower insulation board 2b, and has some elasticity so that it is in elastic contact with the non-combustible gasket 40 applied to the outer wall of the building 1, or Even when in direct contact with the building outer wall (1), the elastic contact is made to prevent the occurrence of a gap between the building outer wall (1) and airtightness.

The non-combustible gasket 40 is to be filled in a gap that may exist between the rear surface of the fire-resistant casing 22 and the building exterior wall 1, and since the concrete surface of the building exterior wall may not be uniform, the non-combustible gasket 40 is used for bending. fill up For example, the non-flammable gasket 40 is made of fire-resisting silicone and is applied to the building exterior wall 1 before the fire-resistance module 11 is mounted, and the fire-resistance module 11 is mounted in a viscous state before hardening, so that the building exterior wall (1) ) to cushion the curvature of In addition, when the non-combustible gasket 40 is applied, a gap that may exist between the lower insulating mode 2b and the exterior wall 1 of the building is closed.

The heat insulating module 20 is surrounded by the 'C' shape of the fire resistant module 10 and is seated in the storage space 14 of the fire resistant module 10 with the front open, coupled with the fire resistant module 10, and the heat insulating material is it will be filled The heat insulating module 20 has a substantially square column shape, and the heat insulating material block 21 is composed of a rectangular pillar shape, and the heat insulating material block 11 is composed of a shape surrounding the heat insulating material block 11 and is made of a bent metal plate. is composed

The insulating material block 21 is composed of PF board, urethane or glass wool, and is composed of an insulating material focusing on the thermal insulation performance rather than the fire resistance material focusing on the fire resistance performance, thereby minimizing the thermal bridge phenomenon through the diffusion prevention barrier 100 do.

The insulating casing 22 is manufactured by bending, welding or riveting to a metal plate, and is made of, for example, a galvanized steel plate. A through hole h2 is configured in the front and rear surfaces of the heat insulation module 20, and the heat insulation module ( 20) is fixed to the fire resistant module (10).

In the place where the existing finishing material layer 4 has been removed, a finishing stripe 50 is formed to cover and finish the exposed diffusion barrier 100 . The finishing stripe 50 may be finished with a new dry bit layer covering the exposed front surfaces of the fire resistant module 10 and the heat insulating module 20 so as to be connected to the finishing material layer 4 of the existing private layer. In addition, when the entire external insulation system is constructed, it may be finished with a dry bit layer covering the insulation board layer 2 and the diffusion prevention barrier 100 at once. In addition, the finishing stripe 50 may be composed of a slim stone panel covering the exposed front surface of the fire resistant module 10 and the heat insulating module 20 .

The height (H) of the insulating material block 21 is, for example, 5 to 20 times as compared to the thickness (t) of the barrier fireproof material layer 11, and the depth (D) of the insulating material block 21 is the barrier fireproof material layer 11 ) may be 5 to 20 times greater than the thickness (t). By using the external wall fire diffusion prevention system according to an embodiment of the present invention, the height and depth of the insulation block can be easily configured to 5 times or more compared to the thickness of the barrier fireproof material layer, and the construction of the diffusion prevention barrier 100 is simplified. It also has the advantage of being able to do it.

Hereinafter, a construction method of an exterior wall fire prevention system according to an embodiment of the present invention will be described with reference to FIGS. 4 to 8 .

4 is a cross-sectional view showing the state after removing the existing exterior material layer 4 and the insulation board layer 2, and FIG. , FIG. 6 is a cross-sectional view illustrating a state in which the fire resistant module 10 is mounted. 7 is a cross-sectional view illustrating a state in which the heat insulation module 20 is fixed to the fire resistant module 10 , and FIG. 8 is a cross-sectional view illustrating a state after the finishing stripe 50 is constructed.

First, by partially removing the existing exterior material layer 4 of the building by cutting or the like to expose the lower insulation board layer 2, and also removing the exposed insulation board layer 2, the insulation board layer 2 ) to secure a strip-shaped separation space 3 extending horizontally and exposing the building exterior wall 1 (see FIG. 4), for example, the existing exterior material layer 4 is a dry bit layer, and the existing insulation board The layer (2) may be composed of an iso-pink board, a hard urethane board, a PF board, or an EPS board (in the drawing, it is shown that the insulation board layer and the exterior material layer are slightly spaced apart for convenience of understanding, but according to the dry bit method, etc. no gaps).

When viewed from the front, the height of the separation space 3 extending horizontally as a rectangular column having a strip shape corresponds to the height of the fire resistant module 10 . The spaced space 3 may have a band shape to surround the building or at least a band shape to surround a fire-vulnerable part, and may be repeatedly installed on every floor or at regular intervals in the building.

Then, a fire sealant is applied to the exterior wall 1 of the building exposed through the separation space 3 to form a non-combustible gasket 40 (see FIG. 5 ), at this time between the lower insulation board 2b and the exterior wall 1 of the building. It will close any gaps that may exist.

Then, in a state in which the fire sealant has viscosity before curing, a storage space 14 facing the front and a fire resistant module 10 having a fire resistance function are mounted on the outer wall 1 of the building so as to be seated in the above-described separation space 3 . Fix (refer to Fig. 6). At this time, the first fastening means 31, such as an anchor (knife block), is passed through the through hole of the fire resistant module 10 and fixed to the outer wall 1 of the building.

The fire resistant module 10 is provided with a fire resistant coating layer 13 on the bottom surface including the edge of the fire resistant casing 12, and the fire resistant coating layer 13 is in contact with the fire sealant that becomes the non-combustible gasket 40 to ensure airtightness. The fire sealant pressed by the rear surface of the refractory casing 12 overcomes the non-uniform gap difference that may exist between the rear surface of the refractory casing 12 and the exterior wall 1 of the building. The non-combustible gasket 40 by the fire sealant cushions the curvature of the building exterior wall 1 by eliminating or reducing a gap between the rear surface of the fire resistant module 20 and the building exterior wall 1 .

The installation of the anchor on the outer wall 1 of the building through the through hole exposed on the rear surface of the storage space 14 can be easily performed by the operator through the storage space 14 . In particular, since the heat insulating material block 21 is a low-cost material and the multi-layer fire resistance mechanism through the structure of the fire resistant module 10 and the fire resistant coating layer 13 is separately configured, the height H of the heat insulating material block 21 can be sufficiently high. Therefore, the storage space 14 can have a sufficient height, thereby allowing a sufficient working space for the operator.

Then, the heat insulating module 20 having a heat insulating function is fixed to the fire resistant module 10 so as to be seated in the receiving space 14 of the fire resistant module 10 (refer to FIG. 7 ). The second fastening means 41 such as a piece (direct screw) is fastened to the fire resistant module 10 through a through hole configured from the front to the rear of the heat insulating module 20 to be fixed. The front surface of the heat insulation module 20 may be aligned with the first and second front plates 12g and 12h that are the front surfaces of the fire resistant module 10 .

And, after the step of fixing the heat insulation module 20, a finishing stripe 50 is constructed so as to cover the exposed front surfaces of the fire resistant module 10 and the heat insulation module 20 (refer to FIG. 8). By partially constructing a new dry bit layer to be connected to the dry bit layer that is the existing exterior material layer 4 , the finishing stripe 50 can be constructed. In addition, as another method, the finishing stripe 50 may be constructed by finishing with a slim stone panel to cover the exposed front surfaces of the fire resistant module 10 and the heat insulating module 20 . The finishing stripe 50 may be used as a design element of the building by forming a band shape around the building.

In case of a fire on the exterior wall of a building, the path from the insulating material junction to the top of the building can cause the greatest damage, and the present invention can effectively prevent or delay the vertical spread of fire through this path.

The external wall fire prevention system and construction method of the present invention have the advantage of being easily applicable to an external insulation system in which each pipe (profile) is not configured as in some prior art.

The external wall fire prevention system according to an embodiment of the present invention can be easily applied to an existing building in which an external insulation system is installed. R/C) Prevents or delays the vertical spread of fire through the gap between the outer wall and the insulating material, and prevents or delays the vertical spread of fire generated inside the building after it comes out through the windows and openings to the outer wall of the building. It should have the effect of being reborn as a safe building.

In addition, in some prior art (for example, the technique of Patent Document 2), in order for the fire barrier structure for prevention of diffusion to operate effectively, the thickness of the fire board needs to be sufficient to prevent (delay) the spread of fire. Although the performance had to be sacrificed (on the contrary, if the thickness of the fire board is thinned to increase the insulation performance, the diffusion prevention performance is inevitably reduced), but the external wall fire diffusion prevention system and its construction method according to the present invention can be used without lowering the insulation performance, Alternatively, there is an advantage in that it can have sufficient diffusion prevention performance while minimizing degradation.

In the external wall fire diffusion prevention system and its construction method according to the present invention, the fire resistant coating layer 13 constitutes the primary diffusion prevention mechanism, and the lower fire resistant layer 11c and the upper fire resistant layer 11a and the connection between them Since the vertical fireproofing layer 11C constitutes the secondary and tertiary diffusion prevention mechanisms, there is an advantage in establishing a multilayer diffusion prevention mechanism.

In addition, it is possible to have a sufficient separation distance between the lower fireproof material layer 11c and the upper fireproof material layer 11a. Since it can be ensured, even if a flame is generated from the lower insulation board (2b) side, there is an effect of reducing the possibility of reaching the upper insulation board (2a) through the gap that may exist.

In addition, in the external wall fire diffusion prevention system and its construction method according to the present invention, it is possible to completely block the gap leading to the upper part by the non-combustible gasket 40 and the fire-resistance coating layer 13 in close contact with the non-combustible gasket 40 . there is

And, since the insulating material block 21 is a low-cost material and a multi-layer fire resistant mechanism through a structure such as the fire resistant module 10 and the fire resistant coating layer 13 is separately configured, the height H of the heat insulating material block 21 is sufficiently high In this way, sufficient thermal insulation effect can be obtained. On the other hand, the thickness of the lower refractory material layer 11c and the upper refractory material layer 11a that are not aligned with the ?X point to the thermal insulation performance can be made thin, so that the thermal bridge phenomenon (H1, H2) through the refractory material layer is minimized. Therefore, according to the present invention, there is an advantage in that it is possible to prevent or minimize the deterioration of the insulation performance due to partial removal of the existing insulation board layer.

1: building exterior wall 2: insulation board layer
2a: upper insulation board 2b: lower insulation board
3: separation space
4: Finishing material layer 5: Windows
10: fireproof module 11: barrier fireproof material layer
11a: upper refractory layer 11b: vertical refractory layer
11c: lower refractory material layer 12: refractory material casing
12a: first upper plate 12b: first vertical plate
12c: first lower plate 12d: second upper plate
12e: second vertical plate 12f: second lower plate
12g: first front plate 12h: second front plate
13: fireproof coating layer 14: storage space
20: insulation module 21: insulation block
22: insulation casing 22w: wing part
40: non-combustible gasket 50: finish stripe
100: diffusion prevention barrier

Claims (10)

It is fixed to the outer wall of the building (1) through a strip-shaped space (3) extending horizontally between the upper insulation board (2a) and the lower insulation board (2b) that are fixedly installed on the outer wall of the building (1), A fire-resistant module 10 having a C-shaped cross-section extending horizontally to prevent vertical spread of fire;
A heat insulating module 20 surrounded by a 'C' shape of the fire resistant module 10 and seated in a storage space 14 with an open front side, coupled to the fire resistant module 10, and filled with a heat insulating material; consists of,
The fire resistant module 10,
The upper refractory material layer, the vertical refractory material layer and the lower refractory material layer are connected to each other in a 'C' shape, and the barrier refractory material layer 11 and the barrier refractory material layer 11 are covered with a metal plate. consists of,
The fire resistant module (10) is characterized in that it is fixed to the outer wall (1) of the building using a first fastening means (31) penetrating a through hole exposed on the rear surface of the storage space (14),
Exterior wall fire prevention system. delete The method according to claim 1,
The fire resistant module 10,
At least characterized in that it further comprises a fire resistant coating layer (13) formed by applying a fire protection spray to the bottom surface of the fire resistant casing (12) to face the upper surface of the lower heat insulating board (2b),
Exterior wall fire prevention system. The method according to claim 1,
The upper refractory layer, the vertical refractory layer and the lower refractory layer of the barrier refractory layer 11 are composed of ceramic wool,
Exterior wall fire prevention system. The method according to claim 1,
The thermal insulation module 20,
The insulator is configured to include a heat insulating material block 21 configured in a rectangular column shape, and a heat insulating material casing 22 configured in a shape surrounding the heat insulating material block 11 with a metal plate,
The heat insulation module 20 is fixed to the fire resistant module 10 by using a second fastening means 32 penetrating the through holes configured on the front and rear surfaces of the heat insulation module 20,
Exterior wall fire prevention system. The method according to claim 1,
The insulating material block 21 is composed of a PF board, urethane or glass wool,
Exterior wall fire prevention system. The method according to claim 1,
The refractory casing 12 is,
a first upper plate (12a), a first vertical plate (12b) and a first lower plate (12c) connected to each other to form a 'C'shape;
The first upper plate 12a, the first vertical plate 12b, and the first lower plate 12c are spaced apart from each other, and a second upper plate 12d connected to each other to form a 'C' shape, the second number a direct plate 12e and a second lower plate 12f;
A first front plate 12g that connects and finishes the front end of the first upper plate 12a and the front end of the second upper plate 12d, the front end of the first lower plate 12c and the second lower plate ( Consisting of including a second front plate (12h) that ends by connecting the front end of 12f),
Exterior wall fire prevention system. 8. The method of claim 7,
The through hole of the fire resistant module 10 is configured in the first vertical plate (12b) and the second vertical plate (12e),
Exterior wall fire prevention system. The method according to claim 1,
Further comprising a;
Exterior wall fire prevention system. The method according to claim 1,
It is finished with a dry bit layer covering the exposed front surfaces of the fire resistant module 10 and the heat insulating module 20 at once, or
Finished with a slim stone panel covering the exposed front surface of the fire resistant module 10 and the heat insulation module 20,
Exterior wall fire prevention system.

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