KR20200007453A - Fire Door for Heat Insulation and Heat Protection - Google Patents

Abstract

Disclosed is a fire door for heat insulation and heat protection, which is being made as with a conventional fire door, of an inner plate (10) and an outer plate (20), with an insulation material (60) filling an internal space formed by the inner plate (10) and the outer plate (20), piling up a plurality of insulation sheets (60) in a space between the inner plate (10) and the outer plate (20) and sealing each of the insulation sheets by wrapping around each insulation material layer (61) with a thin insulation film (62) on the outside. The insulation material layer (61) is in a panel shape with a thickness of 5-25 mm, and mineral wool sheets such as glass fiber, mineral wool, and ceramic wool can be used. An aluminum thin film (foil) with a thickness of 5-100 μm can be desirably used as the thin insulation film (62). The insulation sheet (60) is desirably made by layering 2-10 sheets. The plurality of layered insulation sheets (60) can be engaged by 4-12 interval keeping members (80).

Description

Fire door with heat insulation and heat dissipation {Fire Door for Heat Insulation and Heat Protection}

The present invention relates to fire doors installed in various buildings such as houses, apartments, office buildings, shopping malls and the like. More specifically, the present invention blocks the heat to prevent condensation that occurs in the fire door of the interior side, in case of fire prevents the heat coming into the interior to prevent the swelling of the inner or outer panels of the fire door, so that the fire door is twisted A fire door that is not deformed.

Fire doors are installed in various buildings such as houses, apartments, office buildings, and shopping malls in order to prepare for fires. Fire doors fix steel door frames on the walls and install fire doors using hinges. The fire door is combined with the inner and outer plates of the steel to form a main body, and the inside is filled with a heat insulating material to block heat in case of fire.

Insulation material filled inside the fire door blocks the heat to prevent condensation on the fire door in the interior. Condensation occurs during winter, when the temperature difference between indoors and outdoors is high and occurs frequently during the spring and autumn seasons. In the event of a fire, the insulation filled inside the fire door serves to block the flame and heat that can enter the room.

Most of the fire doors installed and used so far are fixed with steel door frames between the walls, and the fire doors and the door frames are installed by hinges above and below. The fire door consists of an inner plate and an outer plate, and the inner plate and the outer plate are bent at both ends so that the bent portion of the outer plate enters the bent portion of the inner plate and is joined by a plurality of rivets. In general, the heat shield packing is inserted between the bent portion of the inner plate and the outer plate, and a fixing member is inserted between the rivet and the outer plate bent portion to fix the outer plate, the heat shield packing, and the inner plate integrally. The space between the inner and outer shells is filled with insulation. Insulation materials used include synthetic resin foams such as non-combustible glass fibers and urethane foams.

Utility Model Publication No. 2017-0001850 discloses a plate-shaped frame interposed between a second side portion of the front panel and a third side portion of the rear panel in a fire door including a front panel and a rear panel in the form of a square plate. Disclosed is a heat insulation unit for a fire door including a heat insulation pad attached to one surface, and a sealing member contacting the door frame in a state where the fire door is closed.

Patent Publication No. 2017-0104201 is installed in the door frame, the door body having an empty space therein, and installed in the interior empty space of the door body, and expands when the air is filled to fill the empty space while insulated inside Disclosed is an air filled door having excellent heat insulation and airtightness, comprising an air tube body for forming a sealed air layer.

Patent No. 10-1792971 uses a panel coupling member that completely insulates the front panel and the rear panel of a fire door door and securely secures them by screwing, so that the thermal barrier effect is excellent in the event of a fire. A fire door with enhanced heat dissipation that prevents warping of a door is disclosed. In the patent, the fire door includes a panel joining member including a first frame, a second frame and an insulating spacer, a door including a front panel, a rear panel, and an insulating space, and a thermal expansion member inside the door. It is characterized by including.

Patent Publication No. 2018-0016282 includes a first plate member, a second plate member disposed at a position overlapping with respect to the first plate member in a plate thickness direction, and between the first plate member and the second plate member. An intermediate member disposed in the first plate member, a first heat insulating member disposed between the first plate member and the intermediate member, a second heat insulating member disposed between the second plate member and the intermediate member, and disposed to penetrate the first heat insulating member, Disclosed is a fire door comprising a first connection member connecting the first plate member and the intermediate member, and a second connection member disposed to penetrate the second heat insulating member and connecting the second plate member and the intermediate member. .

The preceding patents tried to improve the thermal barrier effect by improving the structure of the fire door, but the structural improvement as described above cannot block the high heat generated in a fire. In order to solve the drawback of the fire door according to the prior patent, the present inventors between the inner surface of the outer plate 20 and the heat insulating material 60 and between the inner surface of the inner plate 10 and the heat insulating material 60, 70 It developed a fire door, characterized in that to form a patent application 2018-57026 (filed on May 18, 2018).

The fire door of the patent application shows an excellent heat insulation and heat shielding effect by expanding the expanded graphite in the fire to form an air layer inside the fire door. However, if the fire is sustained and the temperature rises, and if it is constantly maintained at a high temperature of more than 900 ℃, the expanded graphite lead layer causes the inner or outer panels of the heated fire door to swell, thus causing a problem that the fire door is warped and deformed. It became.

Therefore, the present inventors supplement the drawback of the fire door of Patent Application No. 2018-57026 to fundamentally block heat during fire, so that the inner or outer panels of the fire door do not swell, and thus the fire door is not twisted and deformed. The fire door of the invention has been developed.

An object of the present invention is to provide an improved fire door having a heat insulation and heat dissipation performance by maintaining a constant thickness of the heat insulating material to be embedded.

Another object of the present invention is to provide a fire door that can prevent condensation by having a heat insulating performance.

It is another object of the present invention to provide a fire door that can completely block high temperature heat in a fire by having heat protection.

It is another object of the present invention to provide a fire door that does not cause a problem that the inner plate or outer plate of the fire door is deformed due to the heat of the high temperature during the fire.

Still another object of the present invention is to provide a fire door that is firm so as to prevent the thickness of the fire door and the built-in insulation material from being compressed and deformed from external pressure even in normal times.

Still another object of the present invention is to provide a fire door that can prevent the heat insulating material embedded in the fire door from sagging downward due to the load.

The above and other objects of the present invention can be achieved by the present invention described in detail below.

The fire door having a heat insulation and heat dissipation function according to the present invention is composed of the inner plate 10 and the outer plate 20, the conventional fire door to fill the heat insulating material 60 in the inner space formed by the inner plate 10 and the outer plate (20). A plurality of insulating sheets 60 are laminated in the space between the inner plate 10 and the outer plate 20, and each of the insulating sheets has both surfaces of the insulating layer 61 so that convection takes place in the respective sheets. It is characterized in that the heat insulating thin film 62 is attached to or the heat insulating material layer 61 is wrapped with the heat insulating thin film 62 from the outside and sealed.

The insulation layer 61 is in the form of a panel having a thickness of 5 to 25 mm, and mineral wool sheets such as carbon fiber, glass fiber, mineral wool, and ceramic wool may be used. As the insulating thin film 62, an aluminum thin film (foil) having a thickness of 5 to 100 μm may be preferably used.

It is preferable that 2-10 sheets are laminated | stacked on the said heat insulating sheet 60.

The plurality of stacked insulating sheets 60 may be coupled by 4 to 12 space keeping members 80. It is preferable that the height of the space keeping member 80 is equal to the inner distance of the inner plate 10 and the outer plate 20.

Another embodiment of the present invention is coupled to the reinforcing support 90 and the fastening means 91 on both surfaces of a plurality of laminated insulating sheets 60 to prevent the thermal insulation material embedded in the fire door to sag downwards by the load can do.

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

The present invention can prevent condensation by having a heat insulation performance, and has a heat protection capability to completely block the heat of high temperature in case of fire, so that the inner or outer panels of the fire door do not swell, The invention has the effect of providing a fire door that is not deformed by the inner plate 10 or the outer plate 20 by the usual external pressure.

1 is a schematic cross-sectional view of a fire door showing the fire door structure according to the present invention.
FIG. 2 is a schematic cross-sectional view for showing convection in the thermal insulation sheet 60 in the fire door of FIG. 1.
3 is a schematic cross-sectional view of an insulating sheet 60 of one embodiment according to the present invention.
4 is a schematic cross-sectional view of an insulating sheet 60 of another embodiment according to the present invention.
FIG. 5 is a schematic partial perspective view showing a state in which four layers of insulating sheets 60a to 60d are laminated and joined by a plurality of spacing members 80.
FIG. 6 is a schematic cross-sectional view showing a state in which the four insulating layers 60a to 60d of FIG. 5 are joined by the spacing member 80.
7 shows the spacing member 80, (A) is a perspective view of the assembled spacing member 80, and (B) is an exploded perspective view.
FIG. 8 is a schematic perspective view showing a state in which four layers of insulating sheets 60a to 60d are laminated and joined by eight spacing members 80.
FIG. 9 is a schematic perspective view illustrating both sides of the insulating sheet 60 embedded in the fire door of FIG. 1 or 2 and filled with no empty space.
FIG. 10 is a schematic perspective view showing a state in which a plurality of laminated insulating sheets 60 are coupled to each other with reinforcing supports 90 and fastening means 91 on both surfaces.
FIG. 11 is a schematic cross-sectional view of the plurality of insulating sheets 60 stacked in FIG. 10.
FIG. 12 is a photograph of the combustion state of the insulating sheet 60a after heating the fire door of FIG. 1 in which four insulating sheets 60a to 60d are laminated with a torch on the 60a side for at least 2 hours.
FIG. 13 is a photograph of the combustion state of the heat insulating sheet 60a and the heat insulating sheet 60b after the fire doors of FIG. .

The present invention relates to fire doors installed in various buildings such as houses, apartments, office buildings, shopping malls, and the like to prevent heat from condensation occurring in the fire doors on the indoor side, and prevent heat from entering the interior in the event of fire. It relates to a fire door that is not deformed by warping the inner or outer panels of the fire door.

As shown in FIG. 1, the fire door 100 includes an inner plate 10 and an outer plate 20, and the inner plate 10 and the outer plate 20 are bent at both ends thereof so that the bent portion of the outer plate 20 is formed on the inner plate ( 10 into the bent portion is coupled by the rivet (50). The heat shield packing 30 is normally inserted between the bent portions of the inner plate 10 and the outer plate 20, and the fixing member 40 is inserted and fixed between the rivets 50 and the bent portion of the outer plate 20. The conventional fire door is filled with a heat insulating material in the space between the inner plate 10 and the outer plate 20. After filling the heat insulating material, the inner plate 10 and the outer plate 20 are assembled with rivets. Insulation materials used include synthetic resin foams such as non-combustible glass fibers and urethane foams.

1 is a schematic cross-sectional view of a fire door showing the fire door structure according to the present invention. In the fire door of FIG. 1, all four insulation sheets 60a, 60b, 60c, and 60d are laminated | stacked. Since the distance between the inner plate 10 and the outer plate 20 is usually 50 mm, when four insulating sheets are laminated, each insulating sheet has a thickness of 12.5 mm.

As in the present invention, when the heat insulating sheet is laminated in a multi-layered structure, heat conduction is made difficult and the heat shielding and heat dissipation effects can be improved by that amount. Heat is transmitted by conduction, radiation, and convection, in which convection moves rapidly as the temperature rises. At this time, blocking the flow of convection slows the movement of heat and improves the thermal insulation effect. The multilayer structure of the heat insulation sheet of this invention is for blocking the heat conduction by convection. That is, by forming a sealed structure for each insulating sheet, heat conduction by convection in each insulating sheet is interrupted, and thermal conduction to an adjacent insulating sheet is interrupted.

FIG. 2 is a schematic cross-sectional view for showing convection in the thermal insulation sheet 60 in the fire door of FIG. 1. Assuming that the case is ignited on the outer plate 20 side, the insulating sheet 60a starts to heat up. Since the heat insulation sheet 60a has a structure in which the heat insulation material layer 61 was sealed by the heat insulation thin film 62, such as an aluminum thin film (foil), heat conduction by convection hardly arises. Even if heat conduction by convection occurs, as shown by the arrow of FIG. 2, heat conduction mainly occurs in the heat insulation sheet 60, and little heat conduction by convection occurs between the heat insulation sheets 60. When the heat insulation sheet 60a is heated, the heat insulation sheet 60b which is an adjacent layer starts to heat. Since the heat insulation sheet 60b also has a structure in which the heat insulation material layer 61 was sealed by the heat insulation thin film 62, such as an aluminum thin film (foil), heat conduction by convection hardly arises. In the process of passing through the heat insulating sheet 60c and the heat insulating sheet 60d, heat conduction hardly occurs.

In the present invention, a plurality of heat insulating sheets 60 are laminated in the space between the inner plate 10 and the outer plate 20 of the fire door, and the heat insulating material layer 61 of the heat insulating sheet 61 is formed so that convection occurs in each sheet. The heat insulating thin film 62 is attached to both surfaces, or the heat insulating material layer 61 is wrapped with the heat insulating thin film 62 from the outside, and is sealed.

The insulation layer 61 is in the form of a panel having a thickness of 5 to 25 mm, a mineral wool sheet such as glass fiber, carbon fiber, mineral wool, ceramic wool may be used. As the insulating thin film 62, an aluminum thin film (foil) having a thickness of 5 to 100 μm may be preferably used.

It is preferable that 2-10 sheets are laminated | stacked on the said heat insulating sheet 60. Most preferably, four insulating sheets 60 are laminated.

In the present invention, it is the most important feature to have a structure in which a plurality of insulating sheets 60 are stacked and convection occurs in each of the insulating sheets so that the heat conduction can be delayed for a long time. In order to allow convection to occur in each of the heat insulating sheets, the heat insulating thin film 62 is attached to both surfaces of the heat insulating material layer 61, or the heat insulating material layer 61 is wrapped with the heat insulating thin film 62 from the outside and sealed.

3 is a schematic cross-sectional view of an insulating sheet 60 of one embodiment according to the present invention. The heat insulating sheet 60 of FIG. 3 is manufactured so that the heat insulating material layer 61 is enclosed with the heat insulating thin film 62 from the outside. Even if it is not completely sealed, sufficient heat insulation effect can be achieved. That is, the aluminum foil may be rolled up at both ends to wrap the heat insulation layer 61. The technique of manufacturing the insulation layer 61 by wrapping it with the insulation thin film 62 from the outside can be easily implemented by those skilled in the art to which the present invention pertains.

4 is a schematic cross-sectional view of an insulating sheet 60 of another embodiment according to the present invention. The heat insulation sheet 60 of FIG. 4 is a sheet | seat of the structure which bonded the heat insulation thin film 62 to both surfaces of the heat insulation material layer 61. As shown in FIG. The wool nonwoven sheet 61 and the heat insulating thin film 62 can be easily adhered by those skilled in the art using an inorganic adhesive.

The plurality of thermally insulating sheets 60 may be coupled by a plurality of spacing members 80. Although it is preferable to use 4-12 space | interval maintenance members, it is not limited to this. It is preferable that the height of the space keeping member 80 is equal to the inner distance of the inner plate 10 and the outer plate 20.

FIG. 5 is a schematic partial perspective view showing a state in which four layers of insulating sheets 60a to 60d are laminated and joined by a plurality of spacing members 80. Since the plurality of spacing members 80 are positioned between the inner plate 10 and the outer plate 20 at regular intervals, the inner plate 10 or the outer plate 20 is caused by high heat during a fire or under normal external pressure. To prevent deformation. FIG. 6 is a schematic cross-sectional view showing a state in which the four insulating layers 60a to 60d of FIG. 5 are joined by the spacing member 80.

7 shows the spacing member 80, (A) is a perspective view of the assembled spacing member 80, and (B) is an exploded perspective view. The space keeping member 80 includes a pair of symmetrical coupling caps 81 and 83 and a coupling rod 82 that assembles them. Coupling rod 82 is coupled to the thread (♀) (85, 87) formed on the coupling cap (81, 83) thread (♂) 84, 86 formed at its end. The space keeping member may be made of a material such as synthetic resin, aluminum, iron, or the like. Coupling the plurality of insulating sheets 60 by the spacing member 80 can be easily carried out by those skilled in the art.

FIG. 8 is a schematic perspective view showing a state in which four layers of insulating sheets 60a to 60d are laminated and joined by eight spacing members 80. A plurality of layers of insulating sheets bonded by a plurality of spacing members may have a rectangular parallelepiped structure with side edges as shown in FIG. 8, but as shown in FIG. 9, a structure that is filled in a fire door and filled with no empty space is provided. May have FIG. 9 is a schematic perspective view illustrating both sides of the insulating sheet 60 embedded in the fire door of FIG. 1 or 2 and filled with no empty space.

Another embodiment of the present invention is coupled to the reinforcing support 90 and the fastening means 91 on both surfaces of a plurality of laminated insulating sheets 60 to prevent the thermal insulation material embedded in the fire door to sag downwards by the load can do.

FIG. 10 is a schematic perspective view illustrating a state in which a plurality of laminated insulating sheets 60 are coupled to each other with reinforcing supports 90 and fastening means 91 on both surfaces thereof, and FIG. 11 is a plurality of laminated insulating sheets 60 of FIG. 10. 60 is a schematic cross-sectional view.

The reinforcing support 90 may be made of an iron plate having a thickness of 0.3 mm to 3.0 mm and a width of 50 mm to 150 mm for sufficient strength. The reinforcing support 90 is fixed in the form of a quadrilateral along the periphery of the laminated insulating sheets 60. As the fastening means 91 for fixing the reinforcing support 90 at both surfaces, a means of bolt and nut structure may be preferably used. By combining the plurality of laminated insulating sheets 60 on both surfaces with the reinforcing support 90 and the fastening means 91, the heat insulating material embedded in the fire door can be prevented from sagging downward by the load.

The reinforcing support 90 may be used alone or in combination with an appropriate number of spacing members 80. 10 shows that the four-sided reinforcement support 90 is fixed by the fastening means 91, and three spacing members 80 are coupled at regular intervals in the center.

Another embodiment of the present invention is a mineral wool sheet made of carbon fiber, glass fiber, mineral wool, or ceramic wool, the insulation filled between the inner plate 10 and the outer plate 20, the reinforcing support 90 on one or both surfaces Also provided is a fire door having a heat insulating and heat dissipating function coupled by the fastening means (91).

The present invention will be embodied by the following examples, which are presented for illustrative purposes only and are not intended to limit or limit the scope of the invention.

Example and Insulation Effect Experiment

Four 12.5 mm thick insulating sheets were laminated between the 1.0 mm thick iron plates, which were the same iron plates as the inner and outer panels of the fire door. Each insulating sheet was made so that the cerakwool nonwoven sheet was sealed with an aluminum thin film of 30 mu m. When the torch is heated on the outer plate for 2 hours or more, the upper and lower surfaces of the insulating sheet 60a melt at a melting point of 660 ° C. or higher of the aluminum thin film, which is a surface sealing material, at a high temperature on the surface of the screen. Heat was transferred to the lower surface and the temperature of about 650 ℃ ~ 750 ℃ was transmitted, and some of the aluminum thin film melted to form some holes, and the insulation sheet 60c and the insulation sheet 60d remained almost intact due to the temperature decrease. .

12 is a photograph of the combustion state of the insulating sheet 60a after heating the fire door of FIG. 1 in which four insulating sheets 60a to 60d are laminated with a torch on the 60a side for at least 2 hours. The upper and lower surfaces (aluminum foil) of the insulating sheet 60a are melted to remove the sealing layer and remain as only inner ceramic wool.

FIG. 13 is a photograph of a combustion state of the heat insulating sheet 60a and the heat insulating sheet 60b after heating the fire door of FIG. 1 in which four heat insulating sheets 60a to 60d are laminated with a torch on the 60a side for at least 2 hours. . Heat is transferred to the lower surface of the insulating sheet 60b, and a temperature of about 650 ° C to 750 ° C is transferred, and some of the aluminum thin films are melted to form some holes. After the fire doors were heated for more than 2 hours with a torch on the 60a side, the opposite surface temperature exhibited excellent heat shielding and heat dissipation effects of less than 110 ° C.

Simple modifications and changes of the present invention can be easily made by those skilled in the art, and all such modifications and changes can be seen to be included in the scope of the present invention.

Claims (12)

In the conventional fire door comprising the inner plate 10 and the outer plate 20, and filling the heat insulating material 60 in the inner space formed by the inner plate 10 and the outer plate 20,
Laminating a plurality of insulating sheets 60 in the space between the inner plate 10 and the outer plate 20, wherein each of the insulating sheet is a heat insulating thin film 61 from the outside so that convection occurs in each sheet A fire door with heat insulation and heat dissipation, characterized in that it is wrapped and sealed with (62).
According to claim 1, wherein the heat insulating material layer 61 is in the form of a panel having a thickness of 5 to 25 mm, a mineral wool sheet made of carbon fiber, glass fiber, mineral wool, or ceramic wool, wherein the heat insulating thin film 62 is It is an aluminum thin film (foil) which has a thickness of 5-100 micrometers, The fire door which has the heat insulation and heat radiating function.
The fire door according to claim 1, wherein said heat insulating sheet (60) has two to ten sheets stacked thereon.
4. The fire door according to any one of claims 1 to 3, wherein the plurality of stacked insulating sheets (60) are joined by a plurality of spacing members (80).
The space keeping member (80) is composed of a pair of symmetrical coupling caps (81, 83) and a coupling rod (82) for assembling them. Fire door with heat insulation and heat dissipation, characterized in that the same as the inner distance of the outer plate and).
In the conventional fire door comprising the inner plate 10 and the outer plate 20, and filling the heat insulating material 60 in the inner space formed by the inner plate 10 and the outer plate 20,
A plurality of insulating sheets 60 are laminated in the space between the inner plate 10 and the outer plate 20, and each of the insulating sheets is insulated on both surfaces of the insulating layer 61 so that convection occurs in each sheet. A fire door with heat insulation and heat dissipation, characterized in that a thin film 62 is attached.
7. The heat insulating layer 61 according to claim 6, wherein the heat insulating material layer 61 is in the form of a panel having a thickness of 5 to 25 mm, and is a mineral wool sheet made of carbon fiber, glass fiber, mineral wool, or ceramic wool, and the heat insulating thin film 62 is It is an aluminum thin film (foil) which has a thickness of 5-100 micrometers, The fire door which has the heat insulation and heat radiating function.
8. The fire door according to claim 7, wherein the heat insulating sheet (60) is laminated with 2 to 10 sheets.
9. The fire door according to any one of claims 6 to 8, wherein the plurality of stacked insulating sheets (60) are joined by a plurality of spacing members (80).
The method of claim 12, wherein the spacer member 80 is composed of a pair of symmetrical coupling caps (81, 83) and coupling rods 82 to assemble them, the height of the spacer member 80 is the inner plate (10) Fire door with heat insulation and heat dissipation, characterized in that the same as the inner distance of the outer plate and).
The heat insulating and heat dissipating function according to claim 1 or 6, wherein the plurality of laminated insulating sheets 60 are coupled by reinforcing support 90 and fastening means 91 on one or both surfaces thereof. Having fire door.
In the conventional fire door comprising the inner plate 10 and the outer plate 20, and filling the heat insulating material 60 in the inner space formed by the inner plate 10 and the outer plate 20,
The heat insulating material is a mineral wool sheet made of carbon fiber, glass fiber, mineral wool, or ceramic wool, and is provided with a heat insulating and heat dissipating function characterized in that it is coupled by a reinforcing support 90 and a fastening means 91 on one or both surfaces. Having fire door.

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