KR102302052B1 - Linear thermal bridge and linear leakage blocking structure of fire door with improved complex performance - Google Patents

Abstract

The present invention relates to a linear thermal bridge and linear dampness blocking structure of a fire door with improved complex performance, comprising: inner and outer steel plates which are formed at a regular interval in parallel with each other; a structure reinforcing steel plate which is formed between the inner and outer steel plates, prevents structure deformation, and has an elongated hole on one side thereof; and a fireproof sealing blocking material which is formed between the inner and outer steel plates and covers one surface of the structure reinforcing steel plate. Linear thermal bridge and linear dampness through the inner and outer steel plates and the structural reinforcing steel plate are double-blocked by the structural reinforcing steel plate and the fireproof sealing blocking material.

Description

Linear thermal bridge and linear leakage blocking structure of fire door with improved complex performance

The present invention relates to a linear thermal bridge and linear leakage blocking structure of a fire door, and more particularly, a fireproof airtight barrier material provided with a flame-retardant gas-tight gasket and a non-combustible pad by forming a structural reinforcing steel plate with a long hole between an inner steel plate and an outer steel plate. It is related to the linear thermal bridge and linear leakage blocking structure of the fire door with improved composite performance to block the linear thermal bridge through the internal and external iron plates by forming a

Condensation may occur on the inside or outside of the door during the season when the temperature difference between indoor and outdoor is large, such as summer or winter, and in particular, condensation occurs more frequently in winter.

In particular, in the case of a front door or fire door, most of them are made of metal, and due to the structure in which the inner panel and the outer panel made of metal are directly connected to each other, heat transfer between the inside and the outside is easy, so there is no condensation. This happens frequently.

This dew condensation phenomenon does not stop with dew on the door, it can flow down and spread to adjacent places, and there are various problems such as hygienic problems such as mold generation, as well as causing corrosion of the door.

One of the technologies for preventing dew condensation, the following prior art document, Republic of Korea Patent Publication No. 10-1502562 'Insulation Frame for Doors' (hereinafter referred to as 'Prior Art 1') is a metal frame for indoor and outdoor applications. In order to prevent heat exchange between the inner frame and the outer frame, a heat insulating bar is formed between the inner frame and the outer frame to block heat exchange between the inner frame and the outer frame and to improve the thermal insulation effect.

In the case of this prior art 1, the structural strength of the door is inevitably lowered due to the material characteristics of the insulating bar connecting the inner frame and the outer frame, and it is fundamentally difficult to apply to a fire door that has to withstand a considerable high temperature and external force in the event of a fire. And even in the case of a general door, structural damage may occur at the connection part of the insulation bar when used for a long period of time.

Another of the technologies for preventing condensation, Republic of Korea Patent Publication No. 10-1746928, 'door frame for fire door with anti-condensation function' (hereinafter referred to as 'prior art 2') is It is a technology applied with a structure to block the inflow of outside air.

However, in the prior art 2, heat exchange between indoors and outdoors can be made through the frame of the fire door, and accordingly, the inner surface temperature of the frame is greatly lowered and dew is formed on the inner surface of the fire door. It is difficult to prevent condensation.

As one of the techniques for solving the above problems, Republic of Korea Patent No. 10-2027317 'fire door for heat shielding' (hereinafter referred to as 'prior art 3') has been disclosed, wherein prior art 3 is at least under the fire door. By forming one anti-condensation hole so that the inside of the fire door acts as a damper between the outside and the inside, it is possible to prevent the occurrence of condensation without reducing the structural strength of the door or adding a separate configuration.

More specifically, the prior art 3 includes a frame in the shape of a fire door and having at least one anti-condensation hole in the lower portion, and a heat insulator configured inside the frame, wherein the heat insulator is a first configured inside the frame. The heat insulating material and the first heat insulator have a relatively high heat insulating performance, and have relatively high heat insulating performance compared to the second heat insulator and the first heat insulator configured on the indoor side of the inner lower part of the frame, and the inside of the frame It includes a third heat insulating material configured on the outdoor side of the lower portion.

However, in the prior art 3, since the anti-condensation structure is limited to only a part of the frame of the fire door, there is a limit to the function of blocking a linear thermal bridge through the outdoor and indoor iron plates of the fire door. Since a separate iron plate was not provided, there was a problem of being vulnerable to structural deformation of the fire door due to high temperature.

In addition, the prior art 3 is a structure in which a condensation prevention hole is simply formed on one side of the frame, and through this, the heat energy contained in the indoor air is transferred to the heat insulating material and the temperature of the heat insulating material is increased. Even if the structural reinforcing steel plate is additionally installed therebetween, it is inefficient in preventing the transfer of heat energy through the structural reinforcing steel plate and consequent loss of heat energy and occurrence of condensation.

Therefore, the need for a linear thermal bridge and linear leak blocking structure of a fire door that effectively blocks linear thermal bridges and linear leakage through indoor and outdoor iron plates and structural steel plates to prevent thermal energy loss and condensation generation has grown.

Republic of Korea Patent Publication No. 10-1502562 (Notice on Mar. 16, 2015) 'Door Insulation Frame' Republic of Korea Patent Publication No. 10-1746928 (2017. 06. 27. Announcement) 'Door frame for fire door with anti-condensation function' Republic of Korea Patent Registration No. 10-2027317 (2019. 10. 01. Announcement) 'Fire door for heat shield'

In order to solve the above problems, the present invention forms a structural steel plate to prevent structural deformation between an internal iron plate and an external iron plate, and forms at least one elongated hole in the structural steel plate, An object of the present invention is to provide a linear thermal bridge and linear leakage blocking structure of a fire door with improved composite performance to block linear thermal bridge and linear leakage through structural reinforcement steel plates connecting external steel plates and their combined structure.

In addition, the present invention forms a fire airtight barrier material between the inner iron plate and the outer iron plate to cover any one side of the structural reinforcing steel plate, and forms a flame-retardant airtight gasket and a blocking space in the fire air tightness barrier material. An object of the present invention is to provide a linear thermal bridge and linear leakage blocking structure of a fire door with improved composite performance to prevent thermal energy loss and condensation.

In order to achieve the above object, the present invention is formed parallel to each other and spaced apart from each other, the outer iron plate and; A structural reinforcing steel plate formed between the inner and outer steel plates to prevent structural deformation and having a long hole on one side, and a fireproof airtight barrier material formed between the inner and outer steel plates to cover one surface of the structural steel plate, wherein the structural steel plate It provides a linear thermal bridge and linear leakage blocking structure of a fire door with improved composite performance, characterized in that it doubles the linear thermal bridge and linear leakage through the inner and outer steel plates and structural reinforcing steel plates by a fireproof airtight barrier material.

In addition, the structural reinforcing steel plate may have a plurality of pairs of coupling holes coupled to the inner and outer steel plates, respectively, so that the coupling member is coupled to the coupling holes, and the long hole may be disposed between the pair of coupling holes.

In addition, it is preferable that the long holes of the structural steel plate are continuously arranged at regular intervals along the longitudinal direction of the structural steel plate.

In addition, a flame-retardant gastight gasket for maintaining airtightness by being in close contact with the door frame of the fire door may be formed on one side of the fireproof airtight barrier material.

In addition, a blocking space may be formed on one side of the fireproof airtight barrier, and a non-combustible pad may be formed in the blocking space.

In addition, the non-combustible pad is preferably a non-flammable expansion pad or a non-flammable insulating pad.

In addition, the non-combustible pad preferably covers the open side of the long hole formed in the structural steel plate.

In addition, the fireproof airtight barrier material may be inserted into the space provided by the inner and outer steel plate and the structural steel plate to block direct contact between the structural steel plate and the internal and external steel plate.

In addition, a heat blocking member may be formed between the external steel plate and the structural steel plate to prevent heat from being transferred to the structural steel plate.

In addition, a fitting depression is formed on one side of the heat-blocking member so that the end of the structural reinforcing steel plate is fitted, and a heat-blocking space may be formed inside.

According to an embodiment of the present invention, by forming a structural steel plate to prevent structural deformation between the internal iron plate and the external iron plate of the fire door, and forming at least one long hole in the structural steel plate, the inner and outer iron plates and the inner, It has the effect of blocking the linear thermal bridge and linear leakage through the structural reinforcement steel plate connecting the external steel plate and its combined structure.

According to an embodiment of the present invention, a fire-resistance airtight barrier material is formed between the inner iron plate and the outer iron plate of the fire door to cover one side of the structural reinforcing steel plate, and a flame-retardant airtight gasket and a blocking space are formed in the fire-resistance airtight barrier material. It has the effect of preventing the loss of thermal energy and the occurrence of condensation due to the difference in temperature in the room.

1 is a perspective view of a fire door according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 ;
3A and 3B are enlarged views illustrating a linear thermal bridge and a linear leakage blocking structure of a fire door according to an embodiment of the present invention.
4 is a perspective view illustrating a structural reinforcing steel plate of a fire door according to an embodiment of the present invention.
5A and 5B are cross-sectional views illustrating a fireproof airtight barrier material for a fire door according to an embodiment of the present invention.
6A and 6B are cross-sectional views illustrating a heat blocking member of a fire door according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description of the present invention is an embodiment in which the present invention may be practiced, and reference is made to the accompanying drawings shown by way of example of the embodiment. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. In addition, it should be understood that the position or arrangement of individual components in each described embodiment may be changed without departing from the spirit and scope of the present invention.

Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scopes equivalent to those claimed by the claims. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

The terms used in the present invention have been selected as currently widely used general terms as possible while considering the functions in the present invention, but these may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

In the present invention, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, the linear thermal bridge and linear leakage blocking structure of the fire door with improved composite performance will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a fire door according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIGS. 3A and 3B illustrate a linear thermal bridge and linear leakage blocking structure of a fire door according to an embodiment of the present invention It is an enlarged view, and FIG. 4 is a perspective view illustrating a structural steel plate of a fire door according to an embodiment of the present invention, and FIGS. 5A and 5B are cross-sectional views illustrating a fireproof airtight barrier material for a fire door according to an embodiment of the present invention, FIG. 6a and 6b are cross-sectional views illustrating a heat blocking member of a fire door according to an embodiment of the present invention.

As shown, the linear thermal bridge and linear leakage blocking structure of the fire door with improved composite performance of the present invention includes an internal iron plate 10, an external iron plate 20, a structural steel plate 30 and a fireproof airtight barrier material 40 can be configured.

The inner iron plate 10 and the outer iron plate 20 are formed parallel to each other and spaced apart from each other by a predetermined interval. As shown in FIG. 1 , the inner iron plate 10 and the outer iron plate 20 are widely spread out in the form of a plate, and may be formed to match the shape of the opening (開口部, opening part). For example, in the case of a rectangular opening, the shape of the inner iron plate 10 and the outer iron plate 20 may also be rectangular, and in the case of an oval or circular opening, the inner iron plate 10 and the outer iron plate 20 are the openings It can be manufactured in a shape suitable for the shape of

The inner iron plate 10 and the outer iron plate 20 are formed at a position in direct contact with the fire at the outermost part of the fire door 1 in case of a fire, and the inner iron plate 10 and the outer iron plate 20 are the It serves to prevent the high-temperature insulation, composite reflective insulation, and low-temperature insulation located inside from being directly exposed to external shocks or flames.

The inner iron plate 10 and the outer iron plate 20 accommodate a high-temperature insulation material, a composite reflective insulation material and a low-temperature insulation material inside, and the material may be a metal material. When the material of the inner iron plate 10 and the outer iron plate 20 is metal, iron, aluminum, tin, cobalt, nickel, copper, zinc ( zinc) or an alloy thereof may be used, and in particular, iron is most preferable.

Here, the high-temperature insulation material is made of a material having heat insulation or heat resistance at a high temperature of 650 to 950 ° C., mineral wool, airgel, fumed silica, vacuum insulation material, or any one or more of perlite can be selected and used.

The mineral wool refers to asbestos obtained naturally by referring to mineral fibers or artificial rock wool made scientifically. It has high fire resistance and is used as a fire resistant material. In the present invention, all kinds of mineral fibers having high fire resistance among fibers formed from minerals may be included.

The airgel is a compound word of air, meaning air, and gel, meaning solidified liquid. You could be referring to the air molecules in between the threads.

The fumed silica refers to silica in the form of a lump while changing to silicon dioxide by thermal decomposition of silicon tetrachloride. When it is pulverized, it is used as an adhesive, a desiccant, etc. because the surface area is large and the particles are in a fine state.

The vacuum insulator refers to an insulator in which the inside is formed in a vacuum state. It may suitably be composed of a porous fireproof material formed inside a vacuum, and the present invention is not limited to any specific material, and may include all heat insulating materials having a vacuum state.

The pearlite may be a white porous body prepared by pulverizing perlite, overheating, and foaming, and having relatively small particles. In addition, obsidian can also be prepared as a gray-brown porous body by the same process as above and used as perlite.

The high-temperature insulation material has good fire resistance, but it may be difficult to perform the insulation function and the anti-condensation function with only the high-temperature insulation material. there is a need to Therefore, a composite reflective insulating material including a low-temperature insulating material together with the high-temperature insulating material can be formed.

The low-temperature insulation material is made of a material having heat insulation or heat resistance at a relatively low temperature of 250 to 350 ° C., at least one of glass wool, roxel board (calcium carbonate board), polyethylene foam board, polyester, or PF foam (phenol foam). can be selected to use. Of course, the low-temperature insulating material is not limited thereto, and any material having excellent thermal insulation and anti-condensation function may be used as the low-temperature insulating material of the present invention.

The glass wool is made of molten glass fiber, and since it has a remarkable thermal insulation effect, it is generally used as a thermal insulation material for houses, and the safe use temperature is 300 °C. It has low elasticity and has excellent tensile strength, battery insulation, fire resistance, heat insulation, sound absorption, corrosion resistance, and water resistance.

The polyester has high strength among synthetic fibers, has excellent durability, heat retention, and flame retardancy, and is an environmentally friendly material that generates less harmful gas during combustion and can be recycled.

The Roxel board (calcium carbonate board), polyethylene foam board, and phenol foam are thermosetting plastic foams foamed with phenol resin having thermal and chemically stable properties. It is a high-performance material.

As described above, the low-temperature insulating material has weak fire resistance at ultra-high temperatures of 650 to 950° C., but has excellent thermal insulation and anti-condensation functions.

On the other hand, the composite reflective insulating material may be composed of only a low-temperature insulating material, it may be configured to include a low-temperature insulating material and a reflective insulating member made of at least one or more reflective aluminum plate together. At this time, the reflective aluminum plate may be formed in one or two or more between the low-temperature insulating materials, or may be formed in one or two or more at both ends of the low-temperature insulating material to block radiant heat.

The structural reinforcing steel plate 30 is formed between the inner and outer steel plates 10 and 20 to prevent structural deformation. That is, in order to increase the time that the fire door 1 can withstand a fire, it is necessary to prevent structural deformation of the entire fire door. Because it is thin, the structure is easily deformed by heat. Due to this, when the inner iron plate 10 and the outer iron plate 20 are deformed, the structure of the fire door 1 is also deformed, so that the gap between the doors is widened and flames or toxic gas can enter, putting the personnel inside at risk. You need a device to prevent it.

As shown in FIGS. 3A and 3B , the structural steel plate 30 is formed between the internal iron plate 10 and the external iron plate 20 , and is formed at both ends of the fire door 1 to form the fire door 1 . and may be formed to form a right angle with respect to the inner iron plate 10 and the outer iron plate 20 . Here, the structural steel plate 30 is used to permanently bond metal materials such as iron pieces or stainless steel pieces or rivets to the inner steel plate 10 and the outer steel plate 20. It may be coupled through a coupling member 50 such as a bar-shaped mechanical element), etc. can

At this time, the coupling member 50 is suitably made of a material with low thermal conductivity and high rigidity, and the structural reinforcing steel plate 30 is formed thicker than the inner and outer iron plates 10 and 20, so that it is easily heated by heat. It is desirable to prevent structural deformation of the fire door 1 without being deformed.

On the other hand, on one side of the structural steel plate 30, a linear thermal bridge of the fire door 1, if there is an extremely high thermal conductivity in a part of the structure, that part is a thermal short circuit that is easier to transmit heat than the other part A long hole 32 may be formed to block the part). The long hole 32 is perforated at least one or more in the structural steel plate 30, and the structural steel plate 30 connecting the inner and outer steel plates 10 and 20 and the inner and outer steel plates 10 and 20; and It will block the linear thermal bridge and linear leakage through the bonding structure.

More specifically, in order to prevent the fire door 1 from being deformed by fire or physical impact, a structural steel plate 30 made of a metal with high rigidity is coupled between the inner iron plate 10 and the outer iron plate 20. At this time, the structural steel plate 30 connecting the inner and outer iron plates 10 and 20 and the inner and outer iron plates 10 and 20, and the inner and outer iron plates 10 and 20 and the structural steel plate 30 Thermal energy is transferred through the metal coupling member 50 that combines condensing into water droplets) occurs. Accordingly, the present invention forms a plurality of hole-shaped long holes 32 penetrating through the structural steel plate 30 in the center of the structural steel plate 30 so that the internal iron plate 10 is less affected by the external temperature and the temperature is stabilized. It is designed to effectively prevent the transfer of thermal energy through the structural reinforcing steel plate 30 and consequent loss of thermal energy and occurrence of dew condensation, as well as to have a thermal insulation effect.

And it is preferable that the long holes 32 of the structural steel plate 30 are continuously arranged at regular intervals along the longitudinal direction of the structural steel plate 30 as shown in FIG. 4 . In the drawings of the linear thermal bridge and linear leakage blocking structure of the fire door according to the embodiment of the present invention, the long hole 32 is shown in a rectangular shape elongated in the longitudinal direction of the structural reinforcing steel plate 30, but it is not limited thereto. can be changed. At this time, it will be appropriate that the long hole 32 is formed on all four sides of the structural reinforcing steel plate 30 installed along the edges of the inner and outer steel plates 10 and 20, that is, on the upper and lower surfaces and both sides.

As shown in FIGS. 3A and 3B , a pair of coupling holes 34 coupled to the inner steel plate 10 and the outer iron plate 20 are formed in a plurality of the structural reinforcing steel plate 30, respectively. A coupling member 50 is inserted into the 34 to fix the inner and outer iron plates 10 and 20 and the structural reinforcing steel plate 30 . Here, the long hole 32 of the structural reinforcing steel plate 30 is preferably disposed between a pair of coupling holes 34 . This is to effectively block not only the linear thermal bridge by the structural reinforcing steel plate 30 but also the linear thermal bridge by the metallic coupling member 50 .

Meanwhile, as shown in FIGS. 6A and 6B , a heat-blocking member 60 may be further formed between the external iron plate 20 and the structural steel plate 30 . The heat blocking member 60 is inserted into one end of the structural steel plate 30 to prevent direct contact between the structural steel plate 30 and the external iron plate 20, and heat is not transferred to the structural steel plate 30. It is possible to block the linear thermal bridge more effectively.

A fitting depression 62 is formed on one side of the heat blocking member 60. As the end of the structural reinforcing steel plate 30 is fitted in the fitting recess 62, the heat blocking member 60 is a structural reinforcing steel plate. One end of the 30 is wrapped, and the heat blocking space 64 having at least one predetermined size is formed inside the heat blocking member 60 to improve the heat blocking function. At this time, the heat blocking member 60 may be formed to surround the upper and lower surfaces and either side of the structural steel plate 30 as shown in FIG. 6A , and as shown in FIG. 6B , the structural steel plate 30 . It may be further extended to be adjacent to the inner side of the outer iron plate 20 while surrounding the upper surface and side of the. Of course, the heat blocking member 60 of the present invention is not limited to the above shape, and may be formed in various structures to effectively block heat transfer to the structural reinforcing steel plate 30 .

The fireproof airtight barrier material 40 is formed between the inner and outer iron plates 10 and 20 and is in close contact with one surface of the structural steel plate 30 . By making the fire-resistance airtight barrier material 40 cover any one surface of the structural steel plate 30, the structural reinforcement steel plate 30 is in direct contact with the internal iron plate 10 and the external iron plate 20 bent to the side. It blocks the transfer of high-temperature heat to the structural reinforcing steel plate 30 or the transfer of thermal energy through this. At this time, it is preferable that the fireproof airtight barrier material 40 and the heat barrier member 60 be formed of a material having a function required among heat resistance, heat insulation, and prevention of condensation.

In other words, the fireproof airtight barrier 40 surrounds the outer circumferential surface of the structural steel plate 30 and is installed in a direction in which external heat can be transmitted to the structural steel plate 30, more specifically, the internal iron plate 10 And the outer iron plate 20, and can be fitted in a certain space formed by the structural steel plate (30). And the fireproof airtight barrier material 40 can be used by selecting any one or more of PVC, silicone, and hard EPDM (rubber).

Meanwhile, a flame-retardant gastight gasket 42 may be formed in the fireproof airtight barrier material 40 to be in close contact with the door frame of the fire door 1 to maintain airtightness. The flame-retardant airtight gasket 42 penetrates through the fire door 1 . It is installed to block the gap at both ends of the fire door (1) to block the flame and toxic gas.

Here, the flame-retardant gas-tight gasket 42 is sometimes installed on the outer side rather than the gap of the fire door 1, but when the flame-retardant gas-tight gasket 42 is installed on the outer side of the fire door 1, it is exposed close to the flame and caused by heat. It is appropriate to install it inside a gap that can be protected from flames, as it may cause a problem that flames and toxic gases penetrate into the room due to deformation or damage.

And the flame-retardant airtight gasket 42 is formed of a soft material such as rubber, silicon, PVC (Polyvinyl chloride), pin mohair, etc. so that it can be easily bent, and protrudes from the fire resistant airtight barrier material 40 It may be formed to be bent in either direction, or it may be formed of a plurality of hairs protruding from the fireproof airtight barrier material 40 .

That is, as shown in FIG. 5A , the flame-retardant gas-tight gasket 42 is gradually sharpened toward the end, and the end is tightly attached to the door frame of the fire door 1 so that the airtightness between the fire door 1 and the door frame is tight. can be effectively maintained. In addition, as shown in FIG. 5B , the flame-retardant airtight gasket 42 is formed in the form of a bundle of hairs made of a plurality of hairs, and the end of the fire door 1 and the door frame are made to be in close contact with the door frame of the fire door 1 . It can be made to have a soundproofing and fine dust blocking effect as well as airtightness between the two. Of course, the flame-retardant airtight gasket 42 is not limited to the above-described structure, and may include complex structures capable of performing various functions and all combinations that may arise from a combination of these structures.

In addition, a blocking space 44 of a certain size is formed on one side of the fireproof airtight barrier material 40 , and a non-combustible pad 46 may be formed in the blocking space 44 . The non-combustible pad 46 is preferably a non-combustible expansion pad for strengthening heat shielding or a non-combustible insulating pad for enhancing a thermal insulation effect and prevention of condensation. Here, the non-combustible pad 46 is any one of board, polyester, airgel, glass wool, mineral wool, insulating silica, ceramic pad, ceramic wool, calcium carbonate board, polyethylene board, silicone, EDPM (rubber) foam pad. You can select and use more than one.

As shown in FIGS. 3A and 3B , the fireproof airtight barrier 40 is inserted into the space provided by the inner and outer iron plates 10 and 20 and the structural reinforcing steel plate 30, and the It is appropriate that the non-combustible pad 46 is formed to completely cover the open side of the long hole 32 formed in the structural reinforcing steel plate 30 .

As described above, the linear thermal bridge and linear leakage blocking structure of the fire door with improved composite performance according to the embodiment of the present invention consists of the structural steel plate 30 and the fire-resistance airtight barrier 40 and the structural steel plate 30. By double blocking the linear thermal bridge through the inner and outer steel plates 10 and 20 and the structural reinforcing steel plate 30 by the linkage structure of the fireproof airtight barrier material 40, the insulation effect is improved as well as the movement of thermal energy and the It effectively prevents the loss of thermal energy and the occurrence of condensation.

Although the present invention has been described in conjunction with the accompanying drawings, this is only one embodiment of various embodiments including the gist of the present invention, and is intended to be easily implemented by those of ordinary skill in the art. For the purpose, it is clear that the present invention is not limited to the embodiments described above. Accordingly, the protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range by changes, substitutions, substitutions, etc. within the scope not departing from the gist of the present invention are in the right of the present invention. will be included In addition, it is clarified that some components of the drawings are provided in an exaggerated or reduced form than in reality to more clearly describe the components.

1: Fire door 10: Internal iron plate
20: external steel plate 30: structural steel plate
32: long hole 34: coupling hole
40: fireproof airtight barrier material 42: flame retardant airtight gasket
44: blocking space 46: non-combustible pad
50: coupling member 60: heat blocking member

Claims (10)

Internal and external iron plates formed parallel to each other and spaced apart from each other;
Structural reinforcing steel plate formed between the inner and outer steel plates to prevent structural deformation and having a long hole on one side, and
It is formed between the inner and outer iron plates and includes a fireproof airtight barrier material covering one surface of the structural steel plate,
Double blocking of linear thermal bridge and linear leakage through the inner and outer steel plate and structural steel plate by the structural steel plate and the fireproof airtight barrier material,
A blocking space of a certain size is formed on one side of the fireproof airtight barrier, and a non-combustible pad made of a non-combustible expansion pad or a non-combustible insulating pad is formed in the blocking space,
A heat-blocking member is formed between the external steel plate and the structural reinforcing steel plate to prevent heat from being transferred to the structural reinforcing steel plate, and a fitting depression is formed on one side of the heat-blocking member so that the end of the structural reinforcing steel plate is fitted while the structural reinforcing steel plate A linear thermal bridge and linear leakage blocking structure of a fire door with improved composite performance, characterized in that it blocks direct contact between the external iron plate and at least one heat-blocking space having a certain size on the inside to block heat. The method of claim 1,
The structural reinforcing steel plate has a plurality of pairs of coupling holes coupled to the inner and outer steel plates, respectively, so that the coupling member is coupled to the coupling holes, and the long hole is disposed between the pair of coupling holes. Linear thermal bridge and linear leakage blocking structure of fire door with improved performance. The method of claim 1,
The linear thermal bridge and linear leakage blocking structure of the fire door with improved composite performance, characterized in that the long holes of the structural steel plate are continuously spaced apart at regular intervals along the longitudinal direction of the structural steel plate. The method of claim 1,
A linear thermal bridge and linear leakage blocking structure of a fire door with improved composite performance, characterized in that a flame-retardant gastight gasket is formed on one side of the fireproof airtight barrier material, which is closely adhered to the door frame of the fire door to maintain airtightness. delete delete The method of claim 1,
The non-combustible pad is a linear thermal bridge and linear leakage blocking structure of a fire door with improved composite performance, characterized in that it covers the open side of the long hole formed in the structural steel plate. The method of claim 1,
The fireproof airtight barrier material is inserted into the space provided by the inner and outer steel plates and the structural steel plate to block direct contact between the structural steel plate and the internal and external steel plate. leak-blocking structure. delete delete

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