KR101693688B1 - Multipurpose fire door - Google Patents

Abstract

A multipurpose fire door is disclosed. A multipurpose fire door according to the present invention comprises: a panel (120) which forms an outer surface of the fire door (100) and includes front, rear, top and bottom panels (121, 123, 125, 127) of the fire door (100); a thermosetting insulating material (110) disposed inside the panel (120) and formed by forming a granular foam cell and thermoset molding after coating a phosphoric acid-based flame retardant; and a one-component polyurethane adhesive (130) which is to be adhered between the thermosetting insulating material (110) and the panel (120) by bringing into contact with each other less than or equal to 1 mm apart and has the usage of less than or equal to 100 g/m^2.

Description

{MULTIPURPOSE FIRE DOOR}

The present invention relates to a multi-purpose fire door, and more particularly, to a multi-purpose fire door using a thermosetting insulating material, a coating material, an inorganic adhesive and the like to simultaneously satisfy multi-purpose performance such as fire resistance, heat insulation, insulation, condensation and sound insulation.

Fire doors are used as door openings and doors of houses, apartments, factories, ships, and emergency passages. They are intended to prevent high temperature flames from moving / spreading in case of fire, thereby minimizing the damage of people and property.

The fire doors are designed to prevent the spread of fire when a fire occurs and to be easily installed in a certain section of the building so that evacuation of occupants can be facilitated. The regulations for fire doors of buildings only prescribe the thickness of the iron plate, There are no special regulations for adhesives or adhesives. Accordingly, the fire doors of the related art have a problem in that when fire occurs, high temperature and toxic gas are generated due to the combustion of a heat insulating material or an adhesive, so that it is difficult to suppress the fire in the early stage and it can cause damage to valuable people. There was no special measures.

To solve this problem, a conventional technique according to FIG. 1 (Patent Publication 10-2012-0022084) includes a board 55 provided in the middle of a fire door 10; A panel having a shape corresponding to each other with the center of the board 55 being opposed to each other at both ends and having a mixture of inflatable vermiculite and inflated perlite (pearlite) A door panel 50 formed by press-molding a silicate inorganic binder in a plate form after compounding; A reinforcing rim 58 provided at either side of both door panels 50 and able to be fixed to the wall using a hinge; And a cover 56 on the outer circumferential surface of the fire door provided with the door panel.

Conventional technology uses a door panel formed by press-molding a mixture of expanded vermiculite and expanded perlite, so that it has a good soundproofing and deodorizing effect. However, its weight is heavy and it is very harmful to workers due to the vermiculite powder produced at the time of manufacturing . Further, since the mineral is applied to the fire door, there is a problem that the residents inhale the dust due to dust emission due to an external impact or the like.

Another conventional technique according to FIG. 2 for solving the above-mentioned problems (Patent Document 10-2015-0003995) does not use materials such as vermiculite or glass fiber, and is harmless to the human body. However, before the honeycomb was bonded to the glass wool board, the honeycomb was impregnated into the adhesive bottle filled with the liquid adhesive so that the adhesive was applied to the wall surface of the lattice up to 3 to 5 mm.

The conventional fire doors are made of steel plates on the inner and outer surfaces, and a sheet honeycomb is attached to the space between the steel plates by using a one-component urethane adhesive of about 500 g / m < 2 > Insulation (Condensation) Fireproof door is made by inserting mineral fiber insulation such as glass wool and mineral wool with heat insulation inside the door, filling it with one-component type urethane adhesive at about 500g / ㎡ And the steel plate and the heat insulating material are attached and pressed by a hot press at 70 to 90 ° C for about 7 to 10 minutes.

When a high temperature is generated by a fire, the one-component urethane adhesive formed at about 500 g / m < 2 > is burned or melted to cause diffusion of fire and poisonous gas. When the door is made of glass wool, mineral wool There is a problem that the productivity is deteriorated.

In addition, the conventional fire doors have a different temperature distribution on the four sides of the fire door when a fire occurs near the fire door, so that the shape of the fire door is easily distorted. As a result, the fire door can not be used again, and the combustible gas is easily released from the inside of the fire door to the outside, which is very harmful to the human body near the fire door.

Korean Patent Application No. 10-2012-0022084 filed on July 29, 2010, entitled "Fireproof Panel Fireproof Door" Korean Patent Publication No. 10-2013-0091045 filed on Feb. 07, 2012, entitled "Method of Manufacturing a Fireproof Door of Fireproof Insulating Ceramic Sandwich" Korean Registered Patent No. 10-1126353 filed on June 08, 2011, entitled "Fireproof Door and Its Fireproof Door Manufacturing Method" Korean Patent Laid-Open No. 10-2009-0120851 filed on May 21, 2008, entitled "Fireproof door with anti-condensation structure & Korean Patent Publication No. 10-2015-0096136 filed on February 14, 2014, entitled "Fireproof Door Using Aluminum Foamed Metal"

The present invention has been made to solve the above problems and provides a multi-purpose fire door satisfying all purpose functions such as fire resistance, heat insulation, insulation, condensation and sound insulation by using a thermosetting insulating material, a coating material, .

Another problem to be solved by the present invention is to minimize the thickness and amount of the adhesive and prevent the dust such as the mineral from being scattered, thereby minimizing the thickness and amount of the adhesive, And to provide a multi-purpose fire door capable of solving the problem.

Another object of the present invention is to provide a multi-purpose fire door that minimizes the amount of smoke or combustible gas emitted from the inside of the fire door to the outside by minimizing the deformation due to heat even if a fire occurs in the fire door.

The multi-purpose fire door according to the present invention forms an outer surface of the fire door 100 and includes a panel 120 including front, rear, top, and bottom panels 121, 123, 125, and 127 of the fire door 100. As shown in FIG. ); A thermosetting insulating material 110 formed inside the panel 120 and formed by thermosetting molding after forming a granular foam cell and coating a phosphoric acid flame retardant; And a one-component polyurethane adhesive (130) adhered to the thermosetting insulating material (110) and the panel (120) at a thickness of 1 mm or less and adhering to the panel (120) in an amount of 100 g / m 2 or less.

The heat insulating material 140 may be laminated between the front and back panels 121 and 123 and the thermosetting insulating material 110 adhered to the front and rear panels 121 and 123, respectively.

The thermosetting insulating material 110 may be laminated between the front and rear panels 121 and 123 and the heat insulating material 140 adhered thereto.

The inorganic adhesive 150 having a thickness of 1 mm or less and a usage of 2 kg / m 2 or less between the thermosetting insulating member 110 and the heat insulating member 140, As shown in FIG.

The thermosetting insulating material 110 may be coated with a coating material 160 having a thickness of 1 mm or less and a use amount of 300 g / m 2 or less.

The coating material 160 may expand the volume more than twice at a temperature of 100 ° C or higher, and the viscosity may be 500Cpi or higher.

The front and rear panels 121 and 123 may adhere to the thermosetting insulating material 110 and the heat insulating material 140, respectively.

The one-component polyurethane adhesive 130 is formed by placing the thermosetting insulating material 110 cut on the front panel 121 by a predetermined length greater than the lengths of the front and rear panels 121 and 123 in the horizontal and vertical directions, And a thermosetting insulating material 110 bonded to the front panel 121. The thermosetting insulating material 110 and the thermosetting insulating material 110 are bonded to each other with a pressure of not more than 1 / 110, and is pressed with a pressure of 10 Kg / cm 2 or less to be formed to be 1 mm or less between the back panel 123 and the thermosetting insulating material 110.

The panel 120 may have protrusions 122 formed at predetermined intervals on the inner surface thereof and engaged with the thermosetting insulating material 110 or the heat insulating material 140. And a planar portion (124).

The protrusion 122 may be welded to the panel 120 or coupled to the protrusion 126 by a protrusion 126 received in the receiving groove 128 formed in the panel 120.

The upper surface of the protrusion fixing portion 126 is formed at the same height as the flat surface portion 124. The protrusion fixing portion 126 and the receiving groove 128 are fixed by welding or snap- Can be combined.

It is of course possible that the one-component polyurethane adhesive 130 is applied only to the flat surface portion 124.

According to the present invention, a multi-purpose fire door having excellent fire resistance, efficient insulation performance, energy saving, environment friendliness, dust scattering prevention, ease of handling, and ease of installation can be manufactured by using the thermosetting insulating material.

Further, the multi-purpose fire door can be manufactured by simultaneously laminating the above-mentioned thermosetting insulating material with an inorganic coating material, an inorganic adhesive or the like to satisfy all purpose functions such as fire resistance, heat insulation, insulation, condensation and sound insulation.

In addition, the multi-purpose fire door according to the present invention minimizes the thickness and the amount of the adhesive, thereby fundamentally solving the problem that the toxic gas may be exhausted and the body may be fatal.

In addition, the multi-purpose fire door according to the present invention minimizes the distortion caused by heat even when a fire occurs in the fire door, thereby minimizing the amount of smoke or combustible gas emitted from the inside of the fire door to the outside, have.

1 is an exploded perspective view of a fire door according to the prior art.
2 is a sectional view of a main portion of a honeycomb module according to the prior art.
FIGS. 3A and 3B are schematic views showing a production process of a thermosetting insulating material according to the present invention and a thermosetting insulating material.
4 is a cross-sectional view illustrating a multi-purpose fire door according to a first embodiment of the present invention.
5 is a cross-sectional view showing a multi-purpose fire door according to a second embodiment of the present invention.
6 is a cross-sectional view showing a multi-purpose fire door according to a third embodiment of the present invention.
FIG. 7A is a sectional view showing a multi-purpose fire door according to a fourth embodiment of the present invention, and FIG. 7B is a partial perspective view showing a part of the multi-purpose fire door according to the fourth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[First embodiment of multipurpose fire door 100]

FIGS. 3A and 3B are a schematic view of a thermosetting insulating material and a thermosetting insulating material according to the present invention, and FIG. 4 is a cross-sectional view illustrating a multi-purpose fire door according to a first embodiment of the present invention.

3A, 3B and 4, the multi-purpose fire door according to the first embodiment of the present invention will be described in detail.

The multi-purpose fire door (100) according to the first embodiment of the present invention includes a thermosetting insulating material (110), a panel (120), and a one-part polyurethane adhesive (130).

The thermosetting insulating material 110 is formed to have a predetermined thickness and area as shown in FIG. The thermosetting insulating material 110 is formed between the panels 120 and performs fireproofing, heat insulation, insulation, etc. of the multi-purpose fireproof door.

3A and 3B, the production process of the thermosetting insulating material 110 is performed through the EPS foaming process S1, the refractory coating process S2, the thermosetting molding process S3, and the cutting process S4.

The EPS foaming process (S1) is a process of mixing a polyisocyanurate foam formed by polymerization of a polyol compound and an isocyanate compound, a nucleating agent and the like, and pyrolysis to form a granular foam cell of uniform size.

The refractory agent coating process S2 is a process of coating a granular foam cell with a refractory agent, that is, a flame retardant, and the flame retardant may be an aqueous phosphoric flame retardant. The flame retardant according to the present invention can generate a large amount of water while decomposing heat to form a stable coating layer.

The thermosetting molding process (S3) uses a thermosetting flame-retardant EPS board molding apparatus after the EPS granules are coated, and an adjustable horizontal compression system is applied to the apparatus to compress the thermosetting resin to a predetermined thickness and to have a predetermined width. Thermal Curing Flame Retardant EPS board produced by the thermosetting EPS board molding machine has compressibility up to 14%, which can effectively improve the board's degree of closure, porosity, water content and thermal conductivity, improve the flame retardancy of the board, It is possible to reduce the production cost by remarkably lowering the occurrence rate of the squeegee during the cutting process.

After the thermosetting molding process S3, the thermosetting thermosetting material having a desired size is manufactured through a cutting process S4.

The thermosetting insulating material 110 produced by the above-described process quickly forms a honeycomb-like carbon layer structure when the material comes into contact with fire, and has a flame-retardant action that can prevent the passage of the decomposition gas and the molten material. The phosphoric acid-based flame retardant of the thermosetting insulating material 110 generates a large amount of water while decomposing heat, and when the water is evaporated at high temperature, the phosphoric acid-based flame retardant has an endothermic function to suppress the temperature rise of the material, To prevent the combustion heat from entering the material and to prevent the pyrolytic combustible gas from coming out. The phosphoric acid-based flame retardant is thermally decomposed to rapidly dehydrate and carbonize the surface of the material to form a carbonized layer And has a function of carbonizing to form and the like.

By virtue of this function, the thermosetting insulating material 110 has an excellent fire-proofing performance such as a granular fireproofing principle and a product which is carbonized after combustion and prevents secondary fire because no molten droplets are generated, and has excellent thermal insulation performance with a thermal conductivity of 0.040 W / mk or less , It does not contain any toxic substance, it is easy to cut and improves the workability, and even if it is left for 30 minutes at a high temperature of 210 ° C or more for a long time, the structural stability of the fire door is guaranteed.

The multi-purpose fire door 100 according to the first embodiment of the present invention is formed of only one thermosetting insulating material 110 between the panels 120 without stacking several layers of the insulating material 140. [

The panel 120 is made of metal, such as steel, stainless steel, or aluminum. The panel 120 has a predetermined thickness and forms an outer shape of the fire door 100. The panel 120 includes a front panel 121, a rear panel 123, a top panel 125, and a bottom panel 127. The panel 120 may be formed by joining the panels 121, 123, 125 and 127 to each other by welding or bolt-fastening to form the outer shape of the multi-purpose fire door 100, but the present invention is not limited thereto.

Although the front panel 121 and the rear panel 123 differ depending on the viewpoint of the viewer, in the present invention, the panel on the left side of each drawing is separated from the front panel 121 by the front panel 121, The rear panel 123 is used as the panel. The front and back panels 121 and 123 are formed to correspond to the area of the thermosetting insulating material 110. The thickness of the front and back panels 121 and 123 is preferably 0.8 mm or more and 5 mm or less for securing structural stability and durability.

The upper and lower panels 125 and 127 are formed to cover the upper and lower surfaces of the multi-purpose fire door 100, respectively, and are formed to seal and seal the multi-purpose fire door 100.

The one-component polyurethane adhesive 130 is for adhering the thermosetting insulating material 110 and the front and rear panels 121 and 123, respectively.

The one-component polyurethane adhesive 130 is prepared by condensing a polyol mixture with a polyisocyanate to prepare an isocyanate group-terminated polyurethane prepolymer, dispersing the polyurethane prepolymer in water, and chain extending the polyurethane prepolymer water dispersion using polyamines . The one-part polyurethane adhesive 130 has a material property similar to that of a granular foam cell, and therefore is an adhesive excellent in adhesiveness and capable of minimizing deformation due to temperature stress or the like even after bonding.

Conventional fire doors use a one-component polyurethane adhesive 130 in a large amount of 3 to 5 mm in thickness or 300 g / m 2 in area in order to firmly attach the panel and the heat insulating material, so that when a fire occurs, Resulting in not only deteriorating the fire resistance but also causing fatal damage to the human body.

The multi-purpose fire door 100 according to the first embodiment of the present invention is configured to uniformly distribute the one-component polyurethane adhesive 130 on the front and rear panels 121 and 123 at about 100 g / m 2, , A thermosetting insulating material 110 cut to a length of 3 mm or less than the length of the longitudinal direction is placed on the front panel 121 and pressed against the front panel 121 and the thermosetting insulating material 110 at a pressure of 10 kg / As shown in FIG.

Since the thermosetting insulating material 110 according to the present invention is formed with a compressive strength of at least 152 Kpa, it is not deformed even at a pressure of 10 Kg / cm 2, so that the one-component polyurethane adhesive 130 can be uniformly applied within a thickness of 1 mm or less. In addition, since the thermosetting insulating material 110 according to the present invention has excellent processability, it can be formed to suit the size of each panel after application.

The back panel 123 is covered on the thermosetting insulating material 110 adhered to the front panel 121 by the same method and is also pressed against the thermosetting insulating material 110 with a pressure of 10 Kg / Can be formed to be 1 mm or less.

In this case, in the process of closely pressing the front and rear panels 121 and 123 and the thermosetting insulating material 110, the operation is performed in a chamber (not shown) of 60 to 100 degrees Celsius to maximize the adhesive force, It is desirable to secure stability.

Also, since the thermosetting insulating material 110 according to the present invention does not cause physical damage even at the pressure of 10 kg / cm 2 and the temperature of 60 to 100 degrees Celsius, the thickness between each panel and the thermosetting insulating material can be minimized, can do.

In the present invention, the amount of the one-component polyurethane adhesive 130 is minimized to 100 g / m 2 or less by bringing the front and rear panels 121 and 123 and the thermosetting insulating material 110 into contact with each other to 1 mm or less to minimize the generation of flammable gas So that the panel 120 and the thermosetting insulating material 110 can be prevented from being separated and removed according to the temperature change.

In addition, since the thermosetting insulating material 110 according to the present invention is dispersed in the thermosetting insulating material 110 at a rate of 50 / cm 3 or more, the foamed styrene particles that are melted in an environment of 100 ° C. or more and forming voids are distributed in the interior of the thermosetting insulating material 110, The fused styrene particles of the fused styrene particles are melted and changed into a porous structure to collect the combustible gas in each cell.

Accordingly, the present invention minimizes the amount of the single-component polyurethane adhesive 130 used to minimize the generation of flammable gas during a fire, and also collects the generated combustible gas in each cell in a porous structure. 100), it is possible to further improve the refractory performance. In addition, since the amount of the one-component polyurethane adhesive 130 used is minimized to 100 g / m 2 or less, flammable gas hardly occurs, so that the occurrence of damage to the human body in the vicinity can be minimized.

In addition, since the one-part polyurethane adhesive 130 is obtained by foaming the adhesive at a temperature of 60 to 100 degrees Celsius to maximize the pores of the adhesive surface, the heat insulating property can be maximized.

The panel 120 and the thermosetting insulating material 110 may be formed of a one-component polyurethane adhesive 130 having a honeycomb structure in which the density of the thermosetting insulating material 110 is more than 25 kg / ) Can be adhered, so that the sound insulation performance is improved.

In addition, in manufacturing the multi-purpose fire door 100, dust such as vermiculite powder is not generated so that a worker can work safely, and dust emission does not occur even by an external impact, thus ensuring a pleasant life.

[Second embodiment of multipurpose fire door 100]

The multi-purpose fire door according to the second embodiment of the present invention will be described in detail with reference to FIG.

Most of the configurations of the multi-purpose fire door 100 according to the second embodiment of the present invention are the same as those of the multi-purpose fire door 100 according to the first embodiment of the present invention. Therefore, the same components are denoted by the same reference numerals, and a detailed description thereof is omitted.

The second embodiment of the present invention will be described focusing on a configuration different from that of the first embodiment.

In the second embodiment of the present invention, a thermosetting insulating material 110 and a heat insulating material 140 may be laminated between the front and rear panels 121 and 123. The thermosetting insulating material 110 and the heat insulating material 140 may be formed to have the same thickness, but the present invention is not limited thereto.

The second embodiment differs from the first embodiment in that the thickness of the thermosetting insulating material 110 is different from that of the first embodiment, and the heat insulating material 140 is further laminated.

It is preferable that the heat insulating material 140 is an inorganic or organic heat insulating material and an inorganic board having a density of 350 kg / m 3 or less.

It is preferable that the heat insulating material 140 is applied to the size of the multi-purpose fire door 100 using foamed cement having a density of 300 kg / m 3 or less. In addition, since the heat insulating material 140 is formed of an inorganic material in case of fire, it is possible to use a nonflammable inorganic foaming agent which can minimize the damage of human life due to no toxic gas and can protect the atmospheric environment. Further, the silica solid material having a three-dimensional network structure is heat-treated to heat-treat one or more kinds of silica raw materials, followed by heat treatment and pulverization. After mixing with cement, silicate and the like are mixed, and heating is performed to provide fine bubbles. It is also possible to use an excellent lightweight cement insulator in terms of strength.

The inorganic adhesive 150 may adhere the thermosetting insulating material 110 and the heat insulating material 140 to each other when the heat insulating material 110 overlaps two or more sheets of the thermosetting insulating material 110 to block the heat, To use it. The inorganic adhesive 150 has a thickness of 1 mm or less and a coating amount of 2 kg / m 2 or less to minimize the generation of flammable gas together with the one-component polyurethane adhesive 130. The inorganic adhesive 150 may be applied to a thickness of 1 mm or less in the same manner as the one-part polyurethane adhesive 130.

The inorganic adhesive 150 may be a fire-resistant inorganic adhesive having properties of being non-flammable, refractory, and capable of maintaining strength even at a high temperature. Preferably, the inorganic adhesive 150 has a volume of 2 It is an adhesive that expands more than twice and improves fire resistance, and viscosity is preferably 1,000 Cpi or more.

By using such a heat insulating material 140, the incombustibility and heat insulating property of the multi-purpose fire door 100 can be further improved, and durability as well as harmlessness and lightness of the human body can be secured.

Accordingly, in the second embodiment, it is possible to provide a multi-purpose fire door 100 that not only minimizes the occurrence of fire resistance, sound insulation performance, and personal injury as in the first embodiment, but also has improved heat insulation.

[Third embodiment of multipurpose fire door 100]

Referring to FIG. 6, a multi-purpose fire door according to a third embodiment of the present invention will be described in detail.

Most of the configurations of the multi-purpose fire door 100 according to the third embodiment of the present invention are the same as those of the multi-purpose fire door 100 according to the second embodiment of the present invention. Therefore, the same components are denoted by the same reference numerals, and a detailed description thereof is omitted.

The multipurpose door (100) according to the third embodiment of the present invention further includes an inorganic adhesive (150) and an inorganic coating (160). A thermosetting insulating material 110 may be formed between the front and back panels 121 and 123 of the multi-purpose fire door 100 and a heat insulating material 140 may be formed between the thermosetting insulating material 110. A heat insulating material 140 is formed between the front and rear panels 121 and 123 of the multi-purpose fire door and a thermosetting insulating material 110 may be formed between the heat insulating materials 140.

The inorganic adhesive 150 may adhere the thermosetting insulating material 110 and the heat insulating material 140 to each other when the heat insulating material 110 overlaps two or more sheets of the thermosetting insulating material 110 to block the heat, To use it. The inorganic adhesive 150 has a thickness of 1 mm or less and a coating amount of 2 kg / m 2 or less to minimize the generation of flammable gas together with the one-component polyurethane adhesive 130. The inorganic adhesive 150 may be applied to a thickness of 1 mm or less in the same manner as the one-part polyurethane adhesive 130.

The inorganic adhesive 150 may be a fire-resistant inorganic adhesive having properties of being non-flammable, refractory, and capable of maintaining strength even at a high temperature. Preferably, the inorganic adhesive 150 has a volume of 2 It is an adhesive that expands more than twice and improves fire resistance, and viscosity is preferably 1,000 Cpi or more.

The coating material 160 is coated on the surface of the thermosetting insulating material 110 to a thickness of 1 mm or less and the coating amount of the inorganic coating material is 300 g / m 2 or less.

The coating material 160 is preferably a coating material having a viscosity of at least 500 Cpi which improves the fire resistance by expanding the volume used at a temperature of 100 degrees Celsius or more by 2 times or more.

The multi-purpose fire door 100 according to the third embodiment of the present invention is applied to the surface of the heat insulating material 140 and the thermosetting insulating material 110 by applying the inorganic adhesive 150 and the coating material 160 to the multi- (100) was not oxidized or denatured. Accordingly, when the multipurpose fire door 100 is used for a long period of time, defects of the product due to peeling of the thermosetting insulating material 110 and the panel 120 can be prevented in advance.

In the multi-purpose fire door 100 according to the third embodiment of the present invention, the inorganic adhesive 150 and the coating material 160, as well as the fire resistance, insulation and sound insulation performance of the multi-purpose fire door 100 according to the second embodiment, It is possible to expand the self-volume at a temperature of 300 degrees Celsius or more to block heat generated for 2 minutes or more, and the barrier layer can be formed in multiple layers, thereby further improving the heat shielding performance.

[Fourth Embodiment of Multipurpose Fire Door 100]

FIG. 7A is a sectional view showing a multi-purpose fire door according to a fourth embodiment of the present invention, and FIG. 7B is a partial perspective view showing a part of the multi-purpose fire door according to the fourth embodiment of the present invention.

Most of the configurations of the multi-purpose fire door 100 according to the fourth embodiment of the present invention are the same as those of the multi-purpose fire door 100 according to the first to third embodiments of the present invention. Therefore, the same components are denoted by the same reference numerals, and a detailed description thereof is omitted.

The multi-purpose fire door 100 according to the fourth embodiment of the present invention includes front, rear, top and bottom panels 121, 123, 125 and 127, a protrusion 122, a flat portion 124, a protrusion fixing portion 126, .

The front, rear, top, and bottom panels 121, 123, 125 and 127 cover the outer surface of the multipurpose fire door 100 to secure the structural stability of the multipurpose fire door 100, as described above.

The protrusions 122 are formed inside the front, rear, top, and bottom panels 121, 123, 125, and 127 and inserted into the thermosetting insulating material 110 or the heat insulating material 140 to be inserted therein. The protrusions 122 may be formed on the panel 120 at predetermined intervals and the inner surface of the panel 120 may be formed as the planar portions 124 where the protrusions 122 and the protrusions 122 are not formed.

The protrusions 122 may be formed in a column or plate shape having a predetermined diameter and a length. However, the protrusions 122 are not limited thereto, and any shape can be used as long as the thermosetting insulating material 110 and the heat insulating material 140 can be inserted and bonded.

For example, when the protrusions 122 are column-shaped, they have a predetermined stiffness and, at the same time, the length between the panels is 0.1 to 0.25 times the thickness of the multipurpose fire door in order to facilitate bonding with the thermosetting insulating material 110 And it is preferable that the diameter is smaller than the thickness of each panel. In addition, when the protrusions 122 are formed in a plate shape, the length of the protrusions 122 is set to be between 0.1 to 0.25 times the length of each panel, that is, the thickness of the multipurpose fire door in order to have a predetermined rigidity and to easily engage with the thermosetting insulating material 110. [ And it is preferable that the thickness of the protrusion 122 is less than or equal to the thickness of each panel.

The protrusion 122 may be welded to the inner surface of the panel 120 or may be formed on the panel 120 by the protrusion fixing portion 126 in the same manner as in FIG. 7B. Preferably, the protrusions 122 are formed vertically from the inner surface of the panel 120, thereby minimizing the application of the one-component polyurethane adhesive 130.

The planar portion 124 is a portion where the protrusion 122 is not formed on the inner surface of the panel 120 and the one-part polyurethane adhesive 130 is applied to the planar portion 124.

The projections and depressions 126 are inserted and fixed so that a part of the protrusions 122 is fixed and a part of the protrusions 122 is exposed so that the exposed portions can be combined with the thermosetting insulating material 110 or the heat insulating material 140 .

The projections and depressions 126 may be formed in a rectangular parallelepiped shape and may have a predetermined length in the longitudinal direction or the transverse direction of the panel 120. However, And the receiving groove 128 may be formed to correspond to the shape of the protrusion fixing portion 126, and may be formed in various shapes. The protruding and retaining portions 126 are accommodated in the receiving grooves 128 and can be welded or snap-fitted to the panel 120 after being accommodated. The protruding and retaining portions 126 are disposed in the receiving grooves 128, Do. It is preferable that the upper surface of the projection fixing portion 126 is formed so as to have the same height as the plane portion 124.

The receiving groove 128 is formed to receive and fix the projection fixing portion 126 and corresponds to the shape of the projection fixing portion 126. The lower surface of the receiving groove 128 is welded to the projection fixing portion 126 Or may be joined without welding.

The fourth embodiment of the present invention has the performance of the first to third embodiments of the present invention and further includes the protruding portion 122 and the flat surface portion 124, the protruding portion fixing portion 126, and the receiving groove 128 .

In order to minimize the difference in displacement between the thermosetting insulating material and the heat insulating material 140 when the fire occurs, the panel 120, the thermosetting insulating material 140, 110 and the heat insulating material 140 are deformed together to minimize the occurrence of voids in the multi-purpose fire door 100 due to thermal deformation, thereby continuously maintaining the heat insulation, insulation and fire resistance performance,

Second, when the fire is generated by the protrusion 122, the thermosetting insulating material 110 and the heat insulating material 140 are deformed together to minimize thermal distortion and distortion of the multi-purpose fire door 100 so that smoke and gas are not discharged to the outside ,

Thirdly, since the projecting portion 122 is formed, the bonding force between the panel 120 and the thermosetting insulating material 110 and the heat insulating material 140 is further improved and the area of the flat surface portion 124 is reduced, The occurrence of flammable gas can be further reduced when a fire occurs, and the fire resistance performance can be further increased.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Multi-purpose fire door 110: Thermosetting insulation
120: Panel 121: Front panel
122: protrusion 123: rear panel
124: plane portion 125: upper surface panel
126: protruding portion 127: lower panel
128: receiving groove 130: single-component polyurethane adhesive
140: Insulation material 150: Mineral adhesive
160: Coating material

Claims (12)

In the fire door,
A panel 120 including the front, rear, top and bottom panels 121, 123, 125 and 127 of the fire door 100 and forming an outer surface of the fire door 100;
A thermosetting insulating material 110 formed inside the panel 120 and formed by thermosetting molding after forming a granular foam cell and coating a phosphoric acid flame retardant; And
A one-component polyurethane adhesive (130) adhered to the thermosetting insulating material (110) at a distance of 1 mm or less between the panel (120) and the adhesive, and a usage of 100 g /
The panel (120) has protrusions (122) formed at predetermined intervals on the inner surface and engaging with the thermosetting insulating material (110); And a planar portion (124)
The panel 120 includes a flat surface portion 124 and a protrusion 122 formed perpendicularly from the inner surface of the panel 120 at predetermined intervals on the inner surface of the flat surface portion and engaged with the thermosetting insulating material 110 The protrusions 122 are accommodated in the receiving grooves 128 formed in the panel 120 by the protrusions 126 formed at one side thereof,
Wherein the one-part polyurethane adhesive (130) is applied only to the planar portion (124). The method according to claim 1,
Wherein the heat insulating material (140) is laminated between the front and rear panels (121, 123) and the thermosetting insulating material (110) bonded to the front and rear panels (121, 123). The method according to claim 1,
Wherein the thermosetting insulating material (110) is laminated between the front and rear panels (121, 123) and the heat insulating material (140) adhered to the front and rear panels (121, 123). The method according to claim 2 or 3,
The inorganic adhesive 150 having a thickness of 1 mm or less and a usage of 2 kg / m 2 or less between the thermosetting insulating member 110 and the heat insulating member 140, Wherein the door is integrated with the door. The method according to claim 1,
Wherein the thermosetting insulating material (110) is coated with a coating material (160) having a thickness of 1 mm or less and a use amount of 300 g / m 2 or less. 6. The method of claim 5,
Wherein the coating material (160) expands the volume more than two times at 100 DEG C or higher, and has a viscosity of 500Cpi or higher. The method according to claim 1,
Wherein the front and back panels (121, 123) are bonded to the thermosetting insulating material (110) and the heat insulating material (140), respectively. The method according to claim 1,
The one-component polyurethane adhesive 130 is a one-
The thermosetting insulating material 110 cut by a predetermined length greater than the lengths of the front and rear panels 121 and 123 is placed on the front panel 121 and pressed against the front panel 121 at a pressure of 10 kg / Between the panel 121 and the thermosetting insulating material 110,
The back panel 123 is covered on the thermosetting insulating material 110 adhered to the front panel 121 and pressed against the back panel 123 and the thermosetting insulating material 110 at a pressure of 10 kg / Or less of the width of the door. delete delete The method according to claim 1,
The upper surface of the protrusion fixing portion 126 is formed at the same height as the flat surface portion 124. The protrusion fixing portion 126 and the receiving groove 128 are fixed by welding or snap- Characterized in that it is combined. delete

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