KR101792971B1 - Fire Door Having Thermal Insulation - Google Patents

Abstract

The present invention relates to a fire door, and more specifically relates to a fire door having a reinforced thermal insulation function which has an excellent heat blocking effect in case of fire by using a panel coupling member capable of strongly fixing a front surface panel and a rear surface panel of the fire door while the front surface panel and the rear surface panel are completely adiabatically isolated, and is able to prevent distortion of a door due to heat in case of fire. To this end, the fire door is composed of a frame-shaped door frame and a plate-shaped door connected by the door frame and a hinge, wherein the door frame includes a first frame, a second frame, and an insulating spacer, and the door includes the front surface panel, the rear surface panel, and an insulation separation space. The panel coupling member including a heat expansion member is included within the door.

Description

{Fire Door Having Thermal Insulation}

[0001] The present invention relates to a fire door, and more particularly, to a fire door that isolates a front panel and a rear panel of a door of a fire door from each other with a heat insulating member, and at the same time, And which can prevent a twisting phenomenon of a door caused by heat.

Generally, a fire door is a door installed to minimize a fire in a building such as a house, a shopping mall, a factory, etc. It is installed in an entrance, an exit, a stairway, a hallway of a building and the like, and a fire, smoke, (Space on the opposite side where the fire occurs).

Therefore, the fire door has a plate-shaped door having a predetermined thickness, a four-sided frame-like door frame on which the door is installed, and a hinge connecting one side of the door and the door frame. In addition, the fire door maintains thermal insulation and sound insulation and is constructed to prevent the spread of smoke and flames generated during the ignition

As shown in FIG. 1, the fire door 10 according to the related art is manufactured in such a manner that the front plate 11 and the rear plate 12 of the door are coupled to each other, and the front plate 11 and the back plate 12 are combined The heat insulating member 13 is inserted in order to block the heat transfer in the event of a fire. The front plate 11 and the rear plate 12 are coupled with each other using a coupling member 14 such as a screw so as to firmly connect the front plate 11 and the rear plate 12. In this case, 12 are transmitted to each other. In some cases, in order to prevent deterioration of the heat insulating effect, the heat insulating member 13 may be inserted in the middle without using the joining member 14 and a fitting method may be used. In this case, And when the fire occurs, the door is easily opened due to a twist phenomenon on the door due to the temperature difference between the front and rear sides.

It is an object of the present invention to provide a fire door which can effectively prevent heat transfer between the inside and the outside and can firmly manufacture the door by an easy method and prevent the door from twisting due to heat when a fire occurs have.

형상으로 절곡되어 돌출되는 날개부(212)가 형성되고, 상기 문짝(200)이 닫혔을 때 상기 날개부(212)의 두 면이 상기 제1 단턱부(111)의 ㄱ자 형상 두 면과 각각 마주하도록 되어있는 전면패널(210); 상기 문짝(200)이 열려지는 반대쪽에 위치하며, 상기 문짝(200)의 후면 가장자리를 따라 상기 문짝(200)이 열려지는 쪽으로 직각 절곡된 절곡면(222)이 형성되고, 상기 문짝(200)이 닫혔을 때 상기 절곡면(222)이 상기 제2 프레임(120)과 마주하도록 되어있는 후면패널(220); 상기 절곡면(222) 상에 부착되는 제1 열팽창부재(310); 단면이 대략

형상이며, 상기

형상 중 긴 직선형상 부분(300a)은 상기 문짝(200)의 내부에서 상기 절곡면(222)과 나사결합으로 고정되고 ㄱ자 형상 부분(300c)은 상기 날개부(212) 안쪽에 위치하는 패널결합부재(300); 상기 패널결합부재(300)의 상기 긴 직선형상 부분(300a)과 상기 절곡면(222) 사이에 개재되는 경질의 제1 단열패드(311); 상기 패널결합부재(300)의 상기 ㄱ자 형상 부분(300c)과 상기 날개부(212)의 안쪽면(212a) 사이에 연이어 개재되어 밀착 고정되는 경질의 제2 단열패드(312) 및 제2 열팽창부재(315); 상기 패널결합부재(300)의 상기 ㄱ자 형상 부분(300c)과 상기 날개부(212)의 상면(212b) 사이에 개재되는 경질의 제3 단열패드(313); 상기 패널결합부재(300)의 상기 ㄱ자 형상 부분(300c)과 ㄷ자 형상 부분(300b) 사이에 형성된 홈과 상기 전면패널(210) 사이에 개재되는 제4 단열패드(314), 상기 패널결합부재(300)의 상기 긴 직선형상 부분(300a) 일단에 일부분이 고정부착되는 장방형의 보강부재(320); 및 상기 전면패널(210)과 상기 후면패널(220)과의 사이에 형성되되 상기 문짝(200)이 닫혔을 때 상기 단열스페이서(130)와 대응되는 위치에 형성되는 단열이격공간(330); 을 포함하며, 상기 문틀(100) 및 상기 문짝(200)의 내부공간에는 단열재가 충진 되는 것을 특징으로 하는 것이 바람직하다. The fire door according to an embodiment of the present invention includes a door frame 100 and a door 200. The door frame 100 and the door frame 200 are connected to each other by a hinge 400, The door frame 100 includes a first frame 110 on which the door 200 is opened and on which a first stepped portion 111 is formed along the front edge of the door frame 100; A second frame 120 having a second step 123 on which a flame retardant gasket 122 can be inserted is formed in a groove 121 which is opposite to the door 200 and is bent in a substantially L- ; And an insulating spacer 130 located at a portion where the door frame 100 faces the door 200 and separating the first frame 110 and the second frame 120 from each other; Wherein the door 200 is located on the side where the door 200 is opened and has a cross section along the front edge of the door 200

When the door 200 is closed, the two surfaces of the wing portion 212 are opposed to the two-sided surfaces of the first step portion 111, respectively, Gt; 210 < / RTI > A bent surface 222 bent at right angles to the door 200 is formed along the rear edge of the door 200 so that the door 200 is opened, A rear panel (220) having the folded surface (222) facing the second frame (120) when closed; A first thermal expansion member 310 attached on the bent surface 222; Section is approximately

Shape,

The long straight portion 300a of the shape is fixed in the inside of the door 200 by screwing with the bent surface 222 and the L-shaped portion 300c is fixed to the inside of the wing portion 212, (300); A hard first heat insulating pad 311 interposed between the long straight portion 300a of the panel joining member 300 and the bent surface 222; The second thermal insulation pad 312 and the second thermal insulation pad 312 which are interposed and fixed between the brazed portion 300c of the panel joining member 300 and the inner surface 212a of the wing portion 212, (315); A hard third heat insulating pad 313 interposed between the braided portion 300c of the panel joining member 300 and the upper surface 212b of the wing portion 212; A fourth heat insulating pad 314 interposed between the front panel 210 and the groove formed between the U-shaped portion 300c and the U-shaped portion 300b of the panel joining member 300, A rectangular reinforcing member 320 to which a part of the long straight portion 300a of the long straight portion 300a is fixedly attached; And an insulating space (330) formed between the front panel (210) and the rear panel (220) and formed at a position corresponding to the insulating spacer (130) when the door (200) is closed. And the interior space of the door frame 100 and the door 200 is filled with a heat insulating material.

In addition to the above features, the first thermal expansion member 310 may expand in the thickness direction when heat is applied due to the occurrence of a fire, so that the folded surface 222 of the door 200 And the second thermal expansion member 315 expands in the thickness direction when heat is applied due to the occurrence of a fire to seal the gap between the second frame 120 of the door frame 100 and the second frame 120 of the door frame 100, The second thermal expansion member 315 is thinner than the first thermal expansion member 310 and the first thermal expansion member 310 is formed to be thinner than the first thermal expansion member 310, And the second thermal expansion pad 315 are thermally expandable graphite, and the thermal insulating spacer 130 is a thermosetting synthetic resin having a low thermal conductivity.

The front panel and the rear panel of the door can be firmly coupled by the screw connection using the panel joining member and the panel joining member can be directly coupled to the front panel and the rear panel, The heat conduction path between the outside (front panel) and the inside (rear panel) of the door is not formed. Therefore, it is possible to effectively block the heat, thereby making it possible to produce a fire door having excellent heat radiation effect.

In addition, it is possible to greatly reduce the indirect heat transfer through radiation, convection, or thermal expansion material by matching physical spacing spaces, which are respectively formed in the door and the door frame for the purpose of inner and outer heat shielding, to correspond to each other. That is, the heat insulating spacing space in which the front panel (outside) and the rear panel (inside) of the door are separated from each other and the heat insulating spacers in which the first frame (outside) and the second frame The frame of the door panel and the frame of the door frame correspond to each other only in the fire occurrence zone and the heat of the door adjacent to the fire occurrence zone is transmitted to the door frame in the opposite side, There is an effect that it is possible to minimize the transfer of heat from the door frame to the door on the opposite side.

In addition, the fire door having the enhanced heat radiation function according to the embodiment of the present invention includes the first thermal expansion member attached between the door and the door frame, so that smoke and toxic gas can be prevented from permeating through the fire door when a fire occurs. And the first thermal expansion member is rapidly expanded by the heat when the fire occurs, thereby completely filling and sealing the gap between the door and the door frame and effectively preventing the smoke from passing therethrough It is possible to manufacture a fire door that is highly effective in preventing smoke and toxic gas from being effectively blocked by the flame retardant gasket and the first thermal expansion member.

In addition, according to the embodiment of the present invention, the fire door having the enhanced heat radiation function has the effect of preventing the door from being loosened or twisted due to the expansion of the door due to the fire when the fire occurs. The second thermal expansion member interposed between the door leaf and the panel joining member expands and pushes the panel joining member toward the front panel, so that it is possible to firmly support the front panel and the rear panel, thereby preventing the door from twisting when a fire occurs .

In addition, since the fire door with enhanced heat radiation function according to the embodiment of the present invention is not a complicated structure such as a front plate and a rear plate being fitted or seamed, it is easy to assemble and can be firmly assembled through a screw member There is an advantage that both ease of assembly and robustness can be ensured simultaneously.

Further, since the heat transfer path is long and the reinforcing member is attached to one side by inserting the C shape into the cross-sectional shape of the panel joining member, even if some heat is transferred to the panel joining member through the heat insulating pad or the like when a fire occurs, It is possible to minimize heat transfer since the heat is discharged to the inside of the door through the long path and the reinforcing member in the process of transferring the heat to the door, and the reinforcing member enhances the rigidity of the door.

1 shows a cross-sectional view of a fire door according to the prior art.
2 is a front view of a fire door with enhanced heat radiation function according to the present invention.
FIG. 3 is a cross-sectional view of a fire door having a heat-dissipating function according to the present invention, and is a partial sectional view taken along line A-A 'of FIG.
FIG. 4 is a cross-sectional view of a fire door with a heat-dissipating function according to the present invention, and is a partial sectional view taken along line B-B 'of FIG. 2.
FIG. 5 is a cross-sectional view of a fire door according to the present invention having enhanced heat radiation function, and is a detailed view of part C of FIG.
FIG. 6 is a cross-sectional view of a fire door with a heat-dissipating function according to the present invention, showing a heat transfer path and a heat release path through a panel support member in the event of a fire.
FIG. 7 is a cross-sectional view of a fire door enhanced with a heat-radiating function according to the present invention, illustrating the principle of operation of a thermal expansion member when a fire occurs.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. Accordingly, those skilled in the art can easily implement the technical idea of the present invention. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments belong. Although the terms used in the present invention are selected as general terms that are widely used at present, there are some terms selected arbitrarily by the applicant in specific cases. In this case, since the meaning is described in detail in the description part of the present invention, It is to be understood that the present invention should be grasped as a meaning of a term other than the term.

It is to be understood that the expressions "first", "second", "first" or "second", among other descriptions of various embodiments, may modify various elements of the embodiments, but do not limit the elements. For example, the representations do not limit the order and / or importance of the components. The representations may be used to distinguish one component from another.

First, a fire door with enhanced heat dissipation function according to an embodiment of the present invention will be described with reference to FIG. 2 to FIG.

2 is a front view of a fire door with enhanced heat radiation function according to the present invention. As shown in FIG. 2, the fire door 10 having a heat-radiating function according to the present invention includes a door frame 100 having a quadrangular frame shape, a plate 100 having a plurality of hinges 400, Shaped door 200 as shown in FIG. Preferably, the handle 410 is attached to the front and rear surfaces of the door 200.

A heat insulating material (not shown) is filled in the door frame 100 and the door 200. The heat insulating material is a heat insulating material made of glass wool, mineral wool, It is preferable that the door frame 100 and the door 200 are filled with an adhesive or the like, respectively. However, in the case of the door frame 100, it is possible to form the interior of the door frame 100 as an empty space without filling the interior with the heat insulating material 170.

3 and 4 are sectional views of a fire door 10 having a heat radiation function enhanced according to the present invention. FIG. 3 is a sectional view taken along the line A-A 'in FIG. 2, FIG. 4 is a cross-sectional view taken along the line B-B 'in FIG. 2, that is, a cross-sectional view of the door frame 100 and the door 200 in the horizontal direction.

In order to insulate between the inner and outer spaces of the fire door (10) when a fire occurs, the door frame (100) is assembled with two frames made of a metal material in which the inner and outer portions of the frame are separated, So as to prevent heat transfer between the inside and the outside. It is preferable that each of the frames includes a feature that each step portion is formed in a stepped shape in cross section. Each of the stepped portions has a flame retarding effect in the event of a fire, and also interrupts the inter-external noise at the contact surface between the door frame 100 and the door 200 and increases airtightness.

3 and 4, the door frame 100 is formed in a rectangular shape along the front edge of the first frame 110 on the outer side of the door 10, that is, on the side where the door 200 is opened And the second frame 120 located on the opposite side of the interior of the fire door 10, that is, on the opposite side of the door 200, is formed in a substantially rectangular shape having a wide upper part and a narrow lower part It is preferable to form the second step portion 123 into which the flame retardant gasket 122 can be inserted in the bent groove portion 121. [ Herein, the flame-retardant gasket 122 prevents the noise of the inside-outside of the fire door 10 and improves the air-tightness, but prevents smoke and toxic gas from spreading when a fire occurs.

When the door 200 is closed between the first frame 110 and the second frame 120, a heat insulating spacer 130 having a predetermined length is disposed at a portion facing the door 200 Preferably, the heat insulating spacer 130 has a width of about 5 mm to 10 mm, preferably about 5 mm to 10 mm, between the vicinity of the first stepped portion of the first frame 110 and the second frame 120, This low synthetic resin is interposed or filled. In order to enhance the rigidity of the door frame 100, a connection part (not shown) may be formed in the middle of the first frame 110 and the second frame 120 without completely separating the first frame 110 and the second frame 120, It is preferable that the spacers 130 are formed in a manner that the spacer 130 is interposed only in a place other than the connection portion. In this case, however, the insulation performance between the first frame 110 and the second frame 120 may be somewhat deteriorated do.

The opposite side of the first frame 110 and the second frame 120 opposite to the door 200 faces the wall or the floor and is supported by the support member 140 or the like having a low thermal conductivity It is also preferable that the two frames 110 and 120 are rigidly connected.

The frame of the door frame 100 is divided into the first frame 110 and the second frame 120 and the heat insulating spacer 130 is disposed therebetween. It is possible to prevent the heat from being transmitted through the frame of the heat exchanger.

Meanwhile, the door 200 is also made of a metal plate, and the outer metal plate and the inner metal plate of the door 200 are separated from each other, so that heat generated from the side where the fire occurs is not transmitted to the opposite space. In addition, since flame retarding and flameproofing functions, which are essential elements of fire doors, must be provided, various factors must be considered.

형상으로 돌출되는 날개부(212)가 형성되도록 하는 것이 바람직하다. 즉, 상기 날개부(212)는 상면(212b)과 안쪽면(212a)이 상기 문틀(100)에 형성되어 있는 제1 단턱부(111)의 ㄱ자 형상 두 면과, 상기 문짝(200)이 닫혔을 때, 각각 접하게 되는 구조이며, 이렇게 내-외부간의 굴곡진 경로의 형성을 통하여 화재발생시 방염기능을 강화시킬 뿐만 아니라, 평상시에는 내-외부간 소음차단 등 밀폐기능을 담당하기도 한다. Hereinafter, the detailed structure of the door 200 will be described with reference to FIG. FIG. 5 is a cross-sectional view of a fire door according to the present invention having enhanced heat radiation function, and is a detailed view of part C of FIG. 5, the door 200 has a front panel 210 on the outer side of the door 10, that is, on the side where the door 200 is opened, The two end faces of the first step portion 111 face each other along the edge,

It is preferable that the wing portion 212 protruding in a shape is formed. That is, the wing portion 212 has a top surface 212b and an inner surface 212a formed on two flat surfaces of the first step portion 111 formed on the door frame 100, In addition, it not only enhances flame retarding function in the case of fire through formation of curved paths between inside and outside, but also functions as an airtight function such as blocking the inside-outside noise during normal times.

It is also preferable that the wings 212 are formed on all the edges of the door 200. However, it is also possible to omit the formation of the wings 212 at the lower end of the door 200 as shown in the lower part of FIG. However, it is preferable to form both sides of the door 200 and the upper end of the door 200. Since the flame is mainly raised when a fire occurs, the wing 212 can be omitted at the lower end, And the wing portion 212 is required to cut off.

The door 200 is opened along the opposite edge of the rear panel 220 corresponding to the inside of the door 10, that is, the opposite side of the door 200 from which the door 200 is opened The folded surface 222 may be formed to face the second frame 120 when the door 200 is closed. As shown in FIG. 5, the end of the bent surface 222 preferably has a predetermined length folded inward to enhance the rigidity of the rear panel 220.

The first thermal expansion member 310 has a thickness ranging from 1.5 mm to 2 mm. The first thermal expansion member 310 has a predetermined thickness, . The first thermal expansion member may be a graphite foam sheet or a foamable fire-retardant sealant sheet which is a heated foam. Preferably, a graphite-based foam sheet is used. The graphite-based foam sheet is compressed to a thickness of about 1.5 mm at room temperature. When a fire occurs, foaming starts at a predetermined temperature, Thereby quickly and effectively blocking the gap between the folded surface 222 of the door 200 and the second frame 120 of the door frame 100. Accordingly, it is possible to prevent the flame and the smoke from moving in the gap between the door 200 and the door frame 100 when a fire occurs.

 As shown in FIG. 5, the heat insulating space 330 may be formed between the front panel 210 and the rear panel 220 of the door 200. The heat insulating space 330 is spaced apart from the front panel 210 and the rear panel 220 to prevent heat transfer. The heat insulating space 330 is formed in the heat insulating spacer 130 , That is, in a position directly below the heat insulating spacer 130 as viewed in FIG. In this way, since the physical separation spaces formed respectively for the purpose of inner and outer heat shielding in the door and frame are matched with each other, the indirect heat transfer through the radiation, convection, or thermal expansion material in the fire door with enhanced heat- There is an effect that can be greatly reduced. That is, the heat insulating spacing 330 in which the front panel (outside) and the rear panel (inside) of the door are separated from each other and the insulating spacer 130 in which the first frame (outside) The frame of the door panel and the frame of the door frame correspond to each other only in the fire occurrence area or in the fire occurrence side, The heat of the door frame is transmitted to the door frame on the opposite side, and the heat of the door frame facing the fire occurrence area is minimized to be transmitted to the door on the opposite side.

형상으로 하는 것이 바람직한데, 상기

형상 단면 중 상기 긴 직선형상 부분(300a)의 오른쪽 끝단은 일정부분이 접히도록 마감하는 것이 바람직한데, 이렇게 하는 이유는 상기 패널결합부재(300)의 일측면에 부착되는 보강부재(320)와 상기 긴 직선형상(300a) 부분과의 사이에 공간을 형성시켜 효과적으로 열을 방출할 수 있도록 하기 위함이다. Meanwhile, the front panel 210, which is the front panel of the door 200, and the rear panel 220, which is the rear panel, can be firmly coupled to each other by screw connection in the fire door with enhanced heat radiation function according to the present invention, And a panel joining member 300 designed to prevent a direct heat conduction path from being formed between the front panel 210 and the rear panel 220. The panel joining member 300 has a substantially U-shaped portion 300c and a substantially U-shaped portion 300b connected to the U-shaped portion 300b and a long straight portion 300b connected to the lower right end of the U- 300a), that is, the overall cross-section

Shape. However,

The reason for doing this is that the reinforcing member 320 attached to one side of the panel joining member 300 and the reinforcing member 320 attached to one side of the panel joining member 300, So that a space is formed between the portion of the long straight line 300a and the portion of the long straight line 300a.

형상 단면 중 상기 긴 직선형상 부분(300a)은 상기 문짝(200)의 내부에서 상기 절곡면(222)과 나사결합으로 고정시키되, 상기 절곡면(222)과 상기 긴 직선형상 부분(300a) 사이에 경질의 제1 단열패드(311)를 개재시키는 것이 바람직하다. 그리고 상기

형상 단면 중 ㄱ자 형상 부분(300c)은 상기 날개부(212) 안쪽에 위치하도록 하면서 상기 ㄱ자 형상 부분(300c)의 오른 쪽 바깥쪽과 상기 날개부(212)의 안쪽면(212a) 사이에는 경질의 제2 단열패드(312) 및 제2 열팽창부재(315)를 연이어서 개재토록 하되 상기 날개부(212)의 안쪽면(212a) 쪽에 제2 열팽창부재(315)가 배치되도록 하는 것이 바람직하다. And

The long straight portion 300a of the shape cross section is fixed in the inside of the door 200 by screwing with the bent surface 222 so that the long straight portion 300a is inserted between the bent surface 222 and the long straight portion 300a It is preferable to sandwich the hard first insulating pad 311 therebetween. And

A piercing portion 300c of the shape section is located inside the wing portion 212 and a hard portion is formed between the right outer side of the piercing portion 300c and the inner surface 212a of the wing portion 212. [ It is preferable that the second thermal expansion member 315 is disposed on the inner surface 212a side of the wing portion 212 so that the second thermal insulation pad 312 and the second thermal expansion member 315 are interposed therebetween.

A third heat insulating pad 313 is interposed between the upper portion of the braided portion 300c of the panel joining member 300 and the upper surface 212b of the wing portion 212, The fourth heat insulating pad 314 is preferably interposed between the front panel 210 and the groove formed between the U-shaped portion 300c and the U-shaped portion 300b of the first heat insulating pad 300, (314) is not necessarily a hard insulating pad.

The front panel 210 and the rear panel 220 can be separated from each other without a coupling member between the front panel 210 and the panel coupling member 300 due to the structure of the panel coupling member 300. [ 220 can be firmly fixed. That is, the folding surface 222 of the rear panel 220 and the panel joining member 300 may be firmly coupled to each other through the hard first heat-insulating pad 311 using a screw member 350 The brazed portion 300c of the panel joining member 300 enters the wing portion 212 so that the right side surface of the brazed portion 300c is connected to the second heat insulating pad 312 and the second thermal expansion member 300. [ The panel connecting member 300 and the bent surface 222 of the rear panel 220 are fixed to the inner surface 212a of the wing portion 212 through the screw hole 315, The screw member 350 is coupled so that the brazed portion 300c of the panel joining member 300 is closely contacted to the inner surface 212a of the wing portion 212 in the process of being coupled through the member 350 It is possible to determine the location. That is, it is preferable to determine the engagement position of the screw member 350 so that the braided part 300c can be closely attached to the inner surface 212a. The upper end of the bracket 300c is pushed up in the process of joining the panel fitting member 300 and the bent surface 222 of the rear panel 220 to the screw member 350 And is attached to the upper surface 212b of the wing portion 212 by pushing the third heat insulating pad 313.

Since the coupling structure of the panel joining member 300 and the door 200 is formed on all four edges or at least three edges of the door 200, The panel 220 can be firmly fixed to the front panel without a fastening member.

Meanwhile, as described above, the right end of the long straight portion 300a of the panel joining member 300 is folded to be folded, and the long straight portion 300a, which is folded and folded, A rectangular reinforcing member 320 may be fixedly attached to the lower end of the right end of the base member 320. [ 5, a certain space is formed between the reinforcing member 320 and the long straight portion 300a. Even if some heat is transferred to the panel joining member 300 through a heat insulating pad or the like in the event of a fire, the reinforcing member 320 may dissipate heat to the inside of the door 200 to prevent heat from being transferred between the front panel 210 and the rear panel 220 Thereby minimizing the heat transfer of the door and enhancing the rigidity of the door.

6 illustrates the concept of releasing the heat path and heat transmitted to the panel joining member 300 into the door 200 when a fire occurs. As shown in FIG. 6, when a fire occurs in the outside, that is, in the direction in which the door 200 opens, the front panel 210 and the wing portion 212 connected thereto are heated, Heat is not directly applied to the panel joining member 300 due to the heat insulating action of the heat insulating pad 312, the third heat insulating pad 313 and the fourth heat insulating pad 314, but when heat is continuously applied, A part of the heat can be transferred while being gradually heated. In this case, heat may be transmitted to the rear panel 220 through a screw member 350 coupled with the rear panel 220. As shown in FIG. 6, the U-shaped portion of the panel joining member 300 The heat transmitted to the rear panel 220 can be minimized because heat is radiated through the curved portion of the rear panel 300b and through the reinforcing member 320. [ Particularly, since the reinforcing member 320 is attached only to the folded portion of the panel joining member 300, the panel joining member 300 and the reinforcing member 320 are separated from each other in many portions, The heat radiation area is widened and the heat can be easily released.

7 illustrates the operation principle of the first thermal expansion member 310 and the second thermal expansion member 315 when a fire occurs. As described above, when a fire occurs, the first thermal expansion member 310 is moved in the thickness direction, So that the gap between the folding surface 222 of the door 200 and the second frame 120 of the door 100 can be quickly and effectively blocked. Accordingly, it is possible to prevent the flame and the smoke from moving in the gap between the door 200 and the door frame 100 when a fire occurs.

The reason why the second thermal expansion member 315 is included is that when the door 200 made of a metal material is heated and stretched due to heat in the event of a fire, the coupling relationship between the front panel 210 and the rear panel 220 becomes The door 200 is loosened and the door 200 is warped or deformed as a whole. Accordingly, the fire door having the improved heat radiation function according to the present invention has the advantage of preventing or minimizing the fire by including the second thermal expansion member 315.

 It is preferable that the second thermal expansion member 315 is attached as a material expanding in the thickness direction at the time of heating, and the thickness of the second thermal expansion member 315 is preferably about 0.6 mm to 1 mm. The second thermal expansion member may also be a graphite foam sheet or a foamable fire-retardant sealant sheet which is a heated foam. Preferably, a graphite-based foam sheet is used. The graphite-based foam sheet is compressed to a thickness of about 0.6 mm at room temperature. When a fire occurs, the graphite-based foam sheet expands rapidly when foaming starts. Even if the door 200 made of a metal material is heated and elongated and the coupling relationship between the front panel 210 and the rear panel 220 is loosened due to the expansion, the second thermal expansion member 315 expands in the thickness direction The panel joining member 300 is pushed in the left arrow direction of FIG. 7, so that the coupling between the front panel 210 and the rear panel 220 can be firmly maintained.

As described above, according to the present invention, the heat-shielding door with improved heat dissipation function is excellent in heat radiation effect between the inside and the outside of the fire door 10. In addition to minimizing warping and deformation of the door due to heat during fire, It has an effect that it can be surely blocked. Although the present invention has been described with reference to the above examples, the present invention is not necessarily limited to these examples, and various modifications may be made without departing from the scope of the present invention. Therefore, the examples disclosed in the present invention are not intended to limit the scope of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

11 Front plate 12 Rear plate
13 heat insulating member 14 coupling member
100 door frame
110 first frame 120 second frame
130 Insulation Spacer
200 doors
210 Front Panel 220 Rear Panel
212 wing portion
300 panel joining member
310 first thermal expansion member 315 second thermal expansion member
311 first insulation pad 312 second insulation pad
313 third insulation pad 314 fourth insulation pad
320 Reinforcing member 330 Insulation space
400 hinge

Claims (2)

A fire door having a heat radiation function enhanced by a door frame (100) and a door (200) connected to the door frame (100) and a door (200) by a hinge (400)
The door frame (100)
A first frame 110 positioned on the side where the door 200 is opened and having a first stepped portion 111 formed along the front edge of the door frame 100;
A second frame 120 having a second step 123 formed on the opposite side of the door 200 to which the flame retardant gasket 122 can be inserted, And
An insulating spacer 130 located at a portion where the door frame 100 faces the door 200 and separating the first frame 110 from the second frame 120; / RTI >
The door (200)
The door 200 is located on the side where the door 200 is opened,

When the door 200 is closed, the two surfaces of the wing portion 212 are opposed to the two-sided surfaces of the first step portion 111, respectively, Gt; 210 < / RTI >
A bent surface 222 bent at right angles to the door 200 is formed along the rear edge of the door 200 so that the door 200 is opened, A rear panel (220) having the folded surface (222) facing the second frame (120) when closed;
A first thermal expansion member 310 attached on the bent surface 222;
Section

Shape,

The long straight portion 300a of the shape is fixed in the inside of the door 200 by screwing with the bent surface 222 and the L-shaped portion 300c is fixed to the inside of the wing portion 212, (300);
A hard first heat insulating pad 311 interposed between the long straight portion 300a of the panel joining member 300 and the bent surface 222;
The second thermal insulation pad 312 and the second thermal insulation pad 312 which are interposed and fixed between the brazed portion 300c of the panel joining member 300 and the inner surface 212a of the wing portion 212, (315);
A hard third heat insulating pad 313 interposed between the braided portion 300c of the panel joining member 300 and the upper surface 212b of the wing portion 212;
A fourth insulating pad 314 interposed between the front panel 210 and the groove formed between the U-shaped portion 300c and the C-shaped portion 300b of the panel joining member 300,
A rectangular reinforcing member 320 partially fixed to one end of the long straight portion 300a of the panel joining member 300; And
A thermal insulation space 330 formed between the front panel 210 and the rear panel 220 and formed at a position corresponding to the thermal insulation spacers 130 when the door 200 is closed; / RTI >
One end of the long straight portion 300a of the panel joining member 300 is folded so that a certain portion thereof is folded and closed so that the reinforcing member 320 is fixedly attached to the folded portion, A space is formed between the reinforcing member 300 and the reinforcing member 320,
The interior space of the door frame 100 and the door 200 is filled with a heat insulating material,
The first thermal expansion member 310 expands in the thickness direction when heat is generated due to the occurrence of a fire so that the first thermal expansion member 310 is closed between the bent surface 222 of the door 200 and the second frame 120 of the door frame 100, Lt; / RTI &
The second thermal expansion member 315 expands in the thickness direction when heat is applied due to the occurrence of fire and pushes the brazed portion 300c of the panel joining member 300 toward the front panel 210,
The second thermal expansion member 315 is thinner than the first thermal expansion member 310,
The first thermal expansion member 310 and the second thermal expansion member 315 are thermally expandable graphite,
The heat insulating spacer (130) is a thermosetting synthetic resin having a low thermal conductivity.
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