KR20230027507A - Fire doors for condensation prevention and fire spread prevention structures - Google Patents

Abstract

According to the present invention, a fire door having a condensation prevention and fire diffusion prevention structure may comprise: a door leaf having a heat insulating member therein; a door frame having an inner plate to which the door leaf is coupled and an outer plate to be fixed outdoors; a flame retardant gasket provided to cover all sides of the door leaf to prevent leakage of harmful gas and flame between the door leaf and the frame in the event of a fire; and a condensation prevention unit blocking thermal bridge and dew condensation by combining grooves perforated in the door frame with pads inside the door frame.

Description

Fire doors for condensation prevention and fire spread prevention structures}

The present invention relates to a fire door with a structure to prevent condensation and fire spread, and more particularly, to a fire door with a structure to prevent condensation and fire spread, which can prevent condensation from occurring on a door frame and a door leaf constituting the fire door and prevent fire spread. it's about

In general, a fire door is a door installed in a fire prevention zone in which a building is divided by floor, area, or use in order to prevent further spread and minimize damage caused by fire even if a fire occurs in the building, and a honeycomb core is installed therein. It has a structure in which the filler and insulation material of the structure are filled to block heat, and also to have airtightness to block harmful gases (smoke) generated in case of fire.

Fire doors as described above are necessarily installed in large buildings for residential purposes such as apartments or multi-family houses as well as officetels in accordance with relevant laws, and fire doors with various functions are being developed.

However, in regions where the four seasons are distinct, such as Korea, condensation occurs due to the temperature difference between the indoor and outdoor areas partitioned by the fire door, and there is a problem in that the fire door itself and the wall around the fire door are damaged due to the occurrence of condensation water.

In order to prevent the condensation phenomenon of the fire door as described above, a plurality of heat insulation holes are provided in the reinforcing plate installed between the inner panel and the outer panel forming the door, or packing and double-sided tape are provided between the inner panel and the outer panel. , Or, a non-metallic material is provided between the inner and outer panels to block heat transfer, and a variety of doors of fire doors that prevent condensation have been developed and installed in the field.

In addition, a door frame that forms a combination with a door leaf of a fire door has been developed to reduce heat transfer by absorbing heat transmitted by attaching a blocking packing having a plurality of compartmental spaces in cross section to the inner surface of the door frame.

Republic of Korea Patent No. 10-0681395 (2007.02.15.)

An object of the present invention is to provide a fire door with a structure to prevent condensation and prevent fire diffusion by blocking the transmission of external or internal heat (temperature).

Another object of the present invention is to provide a fire door with a structure to prevent condensation and prevent fire spread, which can prevent leaks of harmful gases and flames caused by fire.

In order to achieve the above object, a fire door having a structure preventing condensation and preventing fire diffusion according to an aspect of the present invention includes a door having a heat insulating member therein; a door frame having an inner plate to which the door leaf is coupled and an outer plate to be fixed outdoors; a flame retardant gasket provided to cover all side surfaces of the door leaf to prevent leakage of harmful gas and flame between the door leaf and the door frame in the event of a fire; and a condensation prevention unit that blocks thermal bridge and condensation by combining the grooves punched in the door frame with pads inside the door frame.

The anti-condensation part is formed only on the upper and lower portions of both sides of the door frame, and is attached from the inside of the door frame to the anti-condensation groove which is perforated in the longitudinal direction of the inner plate and is coupled to the anti-condensation groove to prevent thermal bridge and condensation. It may be provided with a condensation prevention pad to block.

The anti-condensation pad includes a pad body plate, a pad attachment surface provided on one surface of the pad body plate and attached to one surface of the inner plate, and protruding from one surface of the pad body plate to be inserted into the anti-condensation groove and inserted into the door frame. It may be provided with a pad protrusion to prevent thermal bridge phenomenon and dew condensation phenomenon generated in.

When the anti-condensation pad is inserted into the anti-condensation groove, a certain space is provided between the pad protrusion and the anti-condensation groove, and a part of the pad body plate is not attached to form a circulation gap for circulating air. there is.

In order to further block thermal bridge and condensation, the anti-condensation unit includes a double anti-condensation groove for perforating one more anti-condensation groove in the doorframe to which the hinge is not coupled, and the pad protrusion to be coupled to the double anti-condensation groove. It can be equipped with one more protruding double condensation prevention pad.

The door leaf includes an indoor surface, a bending inclined plane bent in an inward oblique direction from the indoor surface, a bending plane bent in a flat direction from the bending inclined plane, and an inwardly bent surface on the bending plane to form a gap between the bending plane and the indoor surface. an indoor plate forming an indoor overlapping surface facing the other surface; An outdoor surface, a first bending surface bent in one direction from the outdoor surface, a second bending surface bent inward from the first bending surface, and a third bending surface bent in one direction from the second bending surface; an outdoor plate that is bent inwardly from the third curved surface to form an outdoor overlapping surface abutting the other surfaces of the first, second, and third bent surfaces; and a ceramic pad disposed between the indoor board and the outdoor board to increase heat insulation performance of the door leaf.

The flame retardant gasket includes a gasket surface attached to the bending plane, an airtight end formed at one end of the gasket surface and attached to the second bent surface, and a gasket surface cut in an oblique direction from the other end of the gasket surface and attached to the bent inclined surface. It may be provided with a close end to be.

The bent inclined plane and the close contact end are provided so that an angle bent at an internal oblique angle of the bent inclined plane and an end cut in an oblique direction of the close contact end are provided so as to secure a space so that the gap between the door leaf and the door frame is not narrowed. can

The flame retardant gasket may be mixed with a covering foam material that is foamed by heat, so that the space between the door frames may be sealed while expanding in the event of a fire.

Ceramic boards may be attached to the inside of the indoor board and the outdoor board at the upper and lower ends of the door.

The door leaf may be coupled by a riveting operation in which a rivet member is installed in a state in which the flame retardant gasket, the indoor plate, the ceramic pad, and the outdoor plate are sequentially brought into close contact with each other.

A first fitting part protruding to fit into a space formed between the indoor plate, the outdoor plate, and the flame retardant gasket of the ceramic pad, and a second fitting part protruding to fit into a space formed between the outdoor plate and the indoor plate of the ceramic pad. more can be provided.

The outdoor overlapping surface of the outdoor plate overlaps with the third curved surface and then extends in the direction of the first curved surface, and does not overlap with the second curved surface. can do.

According to the anti-condensation and fire diffusion-preventing structure fire door according to the present invention, thermal bridge and condensation can be prevented by a condensation prevention pad attached inside the door frame to the condensation prevention groove formed on the top or bottom of the door frame.

In addition, the flame retardant gasket covering all sides of the door can prevent leakage of harmful gases and flames in the event of a fire.

1 is a front view showing a fire door with a condensation prevention and fire diffusion prevention structure according to the present invention.
Figure 2 is a cross-sectional view showing AA of the anti-condensation and anti-fire diffusion structure fire door shown in FIG.
Figure 3 is a cross-sectional view showing the BB of the anti-condensation and anti-fire diffusion structure fire door shown in Figure 1;
Figure 4 is an enlarged cross-sectional view of a part of the fire door with a condensation prevention and fire diffusion prevention structure shown in FIG.
Figure 5 is an enlarged cross-sectional view of the other part of the anti-condensation and anti-fire diffusion structure fire door shown in FIG.
Figure 6 is a perspective view showing the door frame of the anti-condensation and anti-fire spread structure fire door shown in Figure 4;
Figure 7 is a perspective view showing the door frame of the anti-condensation and anti-fire diffusion prevention structure fire door shown in FIG.
Figure 8 is a cross-sectional view showing the door and flame retardant gasket of the anti-condensation and fire diffusion prevention structure fire door according to the present invention.
9 is a cross-sectional view illustrating a state in which the space between the door frames is sealed as the flame retardant gasket in FIG. 8 expands due to fire;
10 is a cross-sectional view showing a fire door with a condensation prevention and fire diffusion prevention structure according to another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, it goes without saying that the present invention is not limited to these embodiments and can be modified in various forms.

In the drawings, in order to clearly and concisely describe the present invention, parts not related to the description are omitted, and the same reference numerals are used for the same or extremely similar parts throughout the specification. In addition, in the drawings, the thickness, width, etc. are enlarged or reduced in order to make the description more clear, and the thickness, width, etc. of the present invention are not limited to those shown in the drawings.

And when a part in the entire specification is said to "include" another part, it does not exclude other parts unless otherwise stated, and may further include other parts.

1 is a front view showing a fire door with an anti-condensation and fire diffusion prevention structure according to the present invention, FIG. 2 is a cross-sectional view taken along line A-A of the anti-condensation and anti-fire diffusion structure fire door shown in FIG. This is a cross-sectional view showing B-B of a fire door with a structure to prevent condensation and fire diffusion.

As shown in Figures 1 to 3, the condensation prevention and fire diffusion prevention structure fire door has a door leaf 100 having a heat insulating member 50 therein; A door frame 200 having an inner plate 210 to which the door leaf 100 is coupled and an outer plate 220 fixed to the outdoors; A flame retardant gasket 300 provided to cover all sides of the door 100 to prevent leakage of harmful gas and flame between the door 100 and the door frame 200 in the event of a fire; and a condensation preventing unit 400 that blocks thermal bridge and dew condensation by coupling a groove punched in the door frame 200 with a pad inside the door frame 200 .

Here, the door leaf 100 may include an indoor board 110, an outdoor board 120, a heat insulating member 50, and a ceramic pad 130.

The outer edges of the indoor board 110 and the outdoor board 120 are coupled to each other, and a heat insulating member 50 is formed therein so that the door leaf 100 can have heat insulation performance. In addition, the insulation performance of the door 100 may be increased by providing the ceramic pad 130 between the outer rims.

The door 100 is provided with a flame retardant gasket 300 to be described later on the entire outer rim, and the flame retardant gasket 300 is placed on the door 100 so that the coupling space of the hinge 500 is not narrowed due to the thickness of the flame retardant gasket 300. It can be positioned on the same line as the outer edge of the

In the door leaf 100, the ceramic board 140 may be attached to the inside of the indoor board 110 and the outdoor board 120 at the upper and lower ends of the door leaf 100.

Next, the door frame 200 may include an inner plate 210 , an outer plate 220 and a heat insulating member 50 .

The inner plate 210 is formed in a bent shape so that the door 100 is coupled to one side thereof, and a groove having a packing may be additionally formed in the bent shape. At this time, the space between the door leaf 100 and the door frame 200 may be primarily sealed through the packing.

The inner plate 210 has grooves for coupling the condensation preventing part 400 formed on the upper and lower sides of the door frame 200 on both sides, so that the condensation phenomenon generated in the door frame 200 is removed from the condensation preventing part 400. can be blocked.

The outer plate 220 is combined with the inner plate 210, and before being combined, the heat insulation member 50 may be formed inside the inner plate 210 to add heat insulation performance of the door frame 200. In addition, before forming the heat insulating member 50 inside the inner plate 210, the condensation preventing part 400 may be pre-coupled to prevent condensation on the door frame 200.

The flame retardant gasket 300 is entirely surrounded by an outer rim of the door leaf 100, and may form an airtight space by being in close contact between the coupled door leaf 100 and the door frame 200. In addition, a portion of the flame retardant gasket 300 is bonded to the indoor panel 110 of the door 100, and the other portion is adhered to the outdoor panel 120 of the door 100 to form the indoor panel 110 and the outdoor panel 120. ) can be linked.

Since the flame retardant gasket 300 is formed of a flame retardant material, it is possible to prevent fire spread and leakage of toxic gas between the door frame 200 and the door leaf 100 so that flames do not spread when a fire occurs.

The anti-condensation part 400 is formed only on the top and bottom of both sides of the door frame 200, and is attached from the inside of the anti-condensation groove 410 drilled in the inner plate 210 in the longitudinal direction and the door frame 200 to form condensation. An anti-condensation pad 420 coupled to the anti-groove 410 and blocking thermal bridge and condensation may be provided.

The anti-condensation part 400 is coupled inside the door frame 200 and partially protrudes to the outside of the door frame 200, and air circulates between the protruding shapes to reduce the temperature difference between the indoor and outdoor sides of the door frame. It can prevent condensation.

The anti-condensation part 400 is pre-coupled to the door frame 200 before forming the heat insulating member 50 to prevent the anti-condensation part 400 from falling off after installation, and is adhered and fixed from the outside of the door frame 200. Work time can be shortened as there is no need to make the appearance beautiful.

The anti-condensation unit 400 has a condensation-preventing groove 410 perforated in the longitudinal direction in the door frame 200 to which the hinge 500 is coupled, and a condensation-preventing pad 420 coupled to the anti-condensation groove 410 By combining them, it is possible to block thermal bridge and dew condensation caused by temperature difference between indoor and outdoor.

In addition, the anti-condensation unit 400 is a double anti-condensation groove 430 in which one more anti-condensation groove 410 is drilled in the door frame 200 to which the hinge 500 is not coupled to further block thermal bridge and condensation. ), and a double condensation prevention pad 440 coupled to the double condensation prevention groove 430 may be provided.

Next, the doorframe 200 and the anti-condensation unit 400 of the fire door with a condensation prevention and fire diffusion prevention structure according to the present invention will be described in more detail.

Figure 4 is an enlarged cross-sectional view of a part of the fire door with a structure to prevent condensation and fire spread shown in Figure 3, Figure 5 is a cross-sectional view of another part of the fire door with an anti-condensation and fire diffusion prevention structure shown in Figure 3, Figure 6 is a perspective view showing the door frame of the fire door with a structure to prevent condensation and fire spread shown in FIG. 4, and FIG. 7 is a perspective view showing the door frame of the fire door with a structure to prevent condensation and fire spread shown in FIG.

Referring to FIGS. 4 and 5 , the door frame 200 includes an inner plate 210 and an outer plate 220, and the anti-condensation part 400 may be coupled from the inside of the inner plate 210. In addition, the door leaf 200 may include an indoor plate A 110a to correspond to the door frame 200 to which hinges are not coupled, and an indoor plate B 110b to correspond to the door frame 200 to which hinges are coupled. can

In addition, the door leaf 100 may be coupled by a riveting operation in which a rivet member is installed while the flame retardant gasket 300, the indoor plate 110, the ceramic pad 130, and the outdoor plate 120 are in close contact with each other sequentially. there is.

The condensation preventing part 400 may be formed only on the upper and lower portions of both side surfaces of the door frame 200 .

The anti-condensation unit 400 is provided with an anti-condensation groove 410 and an anti-condensation pad 420 in the door frame 200 to which the hinge is coupled, and a double anti-condensation groove 430 in the door frame 200 to which the hinge is not coupled. And it may be provided with a double condensation prevention pad (440).

The anti-condensation groove 410 is perforated by a certain length on one surface of the inner plate 210, and the protrusion formed on the anti-condensation pad 420 is inserted to reduce the temperature difference between the indoor and outdoor surfaces of the door frame 200.

The anti-condensation pad 420 includes a pad body plate 421, a pad attachment surface 422 provided on one surface of the pad body plate 421 and attached to one surface of the inner plate 210, and the pad body plate 421 It may be provided with a pad protrusion 423 that protrudes from one surface of the door frame and is inserted into the anti-condensation groove 410 to prevent thermal bridge and condensation occurring in the door frame 200 .

The pad protrusion 423 is formed to a smaller size than the anti-condensation groove 410 to secure a space between the anti-condensation groove 410 and the pad protrusion 423 .

The pad attachment surface 422 is formed only on one surface of the pad body plate 421 so that one surface of the pad body plate 421 is fixed and the other surface may be formed as a circulation passage.

When the anti-condensation pad 420 is inserted into the anti-condensation groove 410, a certain distance is provided between the pad protrusion 423 and the anti-condensation groove 410, and a part of the pad body plate 421 is not attached. It is possible to form a circulation gap 424 for circulating air.

The circulation gap 424 is formed in the space between the other surface of the pad body plate 421 without the pad attachment surface 422, the pad protrusion 423, and the anti-condensation groove 410, and the door frame 200 generates Condensation can be prevented.

The anti-condensation part 400 has a double anti-condensation groove 430 for perforating one more anti-condensation groove 410 in order to block thermal bridge and condensation, and a pad protrusion to be coupled to the double anti-condensation groove 430 ( 423) may be provided in the double condensation prevention pad 440 protruding one more.

The double anti-condensation groove 430 has two anti-condensation grooves 410 formed on the door frame 200 and has one more circulation gap 424 to block condensation than before, so that the door frame 200 is indoors and outdoors. It is possible to block the condensation phenomenon generated from more than before.

The double anti-condensation pad 440 has two pad protrusions 423 formed on the pad body plate 421, and the pair of pad protrusions 423 are positioned at a certain distance from each other and the pads are attached to the spaced apart space. Face 422 may be formed.

The double condensation prevention pad 440 is attached to the double condensation prevention groove 430 through the pad attachment surface 422 formed between the pair of pad protrusions 423, except for the middle where the pad attachment surface 422 is attached. Circulation gaps 424 are formed on both sides to prevent dew condensation.

Referring to FIG. 6 , the door frame 200 is provided with the anti-condensation part 400 as the double anti-condensation groove 430 and the double anti-condensation pad 440 because the hinge 500 is not coupled, and the door frame 200 is installed on the inner side. It may be provided as plate A (210a).

7, the door frame 200 is provided with a condensation preventing part 400 as a condensation preventing groove 410 and a condensation preventing pad 420 by combining a hinge 500, and the door frame 200 has an inner plate B ( 210b) may be provided.

Next, the door leaf 100 and the flame retardant gasket 300 of the fire door with a condensation prevention and fire diffusion prevention structure according to the present invention will be described in more detail.

8 is a cross-sectional view showing a door leaf and a flame retardant gasket of a fire door with a structure to prevent condensation and fire diffusion according to the present invention, and FIG. 9 is a cross-sectional view illustrating a state in which the space between the door frames is sealed as the flame retardant gasket expands in a fire in FIG. 8 .

8 to 9, the door leaf 100 includes an indoor board 110, an outdoor board 120, and a ceramic pad 130, and the outside board 110 and the outdoor board 120 overlap each other. A flame retardant gasket 300 may be provided on the front of the rim.

The indoor plate 110 includes an indoor surface 111, a bending inclined plane 112 bent in an internal oblique line on the indoor surface 111, a bending plane 113 bent in a flat direction on the bending inclined plane 112, and a bent surface. An indoor overlapping surface 114 forming an end may be formed while being bent inward from the plane 113 to come into contact with the other surface of the bending plane 113 and the indoor surface 111 .

The bent inclined plane 112 is bent in one direction on the indoor surface 111, and may be over-bent and further bent in an oblique direction that is inside the indoor surface 111. The bent inclined surface 112 may be in close contact with the flame retardant gasket 300 so that an outer edge line of the door 100 and one surface of the flame retardant gasket 300 are positioned on the same line.

The bending plane 113 is one side facing the flame retardant gasket 300, and an oblique direction bent on the bending inclined plane 112 may be bent in one direction again. The flame retardant gasket 300 is stably attached through the bending plane 113, and the flame retardant gasket 300 can play a role so that the flame retardant gasket 300 is positioned on the same line as the outer edge of the door 100.

The indoor overlapping surface 114 increases the strength of the outer edge of the indoor panel 110 and can be completely bent inward to make the end beautiful and overlap the other surface of the bending plane 113 and the indoor surface 111. .

The outdoor plate 120 includes an outdoor surface 121, a first bent surface 122 bent in one direction on the outdoor surface 121, and a second bent surface 123 bent inward from the first bent surface 122. ), and the third bending surface 124 bent in one direction on the second bending surface 123, and the third bending surface 124 bent inward to form the first bending surface 122 and the second bending surface 123 ) and an outdoor overlapping surface 125 facing the other surface of the third bent surface 124 may be formed.

The second bent surface 123 is bent in the same direction as the outdoor surface 121 on the first bent surface 122, and after being combined with the indoor plate 110, one surface of the flame retardant gasket 300 is the second bent surface ( 123) may be attached to one side.

The third bending surface 124 is bent again in the same direction as the first bending surface 122 from the second bending surface 123, and the ceramic pad 130 is bent together with the bending plane 113 of the indoor panel 110. can be located.

The outdoor overlapping surface 125 increases the strength of the outer edge of the outdoor plate 120 and is completely bent inward to make the end beautiful, so that the third bent surface 124, the second bent surface 123 and the first It may overlap the other surface of the bent surface 122.

The flame retardant gasket 300 has a gasket surface 310 attached to the bending plane 113 provided on the indoor plate 110 and a second bend formed at one end of the gasket surface 310 and provided on the outdoor plate 120. An airtight end 320 attached to the surface 123 and a close contact end 330 cut in an oblique direction from the other end of the gasket surface 310 and attached to the bent inclined surface 112 provided on the indoor plate 110 can do.

The gasket surface 310 is a portion having an attachment surface so that the flame retardant gasket 300 is attached to the outer rim of the door 100, and one surface of the gasket surface 310 is connected to the bending plane 113 and the interior plate 110. An empty space between the outdoor plates 120 may be attached to be blocked from the outside.

The airtight end portion 320 serves to seal a space created between the door leaf 100 and the door frame 200 while the door leaf 100 is coupled to the door frame 200, and protrudes and extends from one surface of the gasket surface 310. When viewed from the side, one end of the hook shape may protrude semilunarly. Also, the other surface of the airtight end 320 may be attached to the second bent surface 123 of the outdoor board 120 .

The close end portion 330 is formed on the other end of the gasket surface 310 and may be partially cut at the same oblique angle as the bent inclined surface 112 of the indoor plate 110 and attached to the indoor plate 110 .

The bent inclined plane 112 and the close contact end 330 are provided so that the angle bent in the internal oblique direction of the bent inclined plane 112 and the end cut in the diagonal direction of the close contact end 330 correspond to each other, so that the door leaf 100 and the door frame ( 200), it is possible to secure a space so that the gap is not narrowed. Therefore, due to the close end portion 330, the flame retardant gasket 300 can be positioned on the same line as the line of the outer edge of the door 100.

The flame retardant gasket 300 may be mixed with a covering foam material that is foamed by heat, so that the space between the door frames 200 may be sealed while expanding in the event of a fire.

Therefore, when the flame retardant gasket 300 is positioned on the same line through the bent inclined plane 112 and the contact end 330 on the line where the outer edge of the door 100 is located, and the hinge 500 is assembled due to the same line , it is possible to assemble in perfect close contact, preventing the spread of flames in advance.

Next, a fire door with a double condensation prevention and fire diffusion prevention structure according to another embodiment of the present invention will be described. In the following description, only parts different from those of the above-described embodiment are described in detail, and detailed descriptions of the same or extremely similar parts are omitted.

10 is a cross-sectional view showing a fire door with a structure to prevent condensation and prevent fire spread according to another embodiment of the present invention.

Referring to FIG. 10, the ceramic pad 130 includes a first fitting part 131 protruding to be inserted into a space formed between the indoor plate 110, the outdoor plate 120, and the flame retardant gasket 300, and the outdoor plate ( 120) and the indoor plate 110 may be provided with a second fitting portion 132 protruding to fit into the space formed therebetween.

The first fitting part 131 and the second fitting part 132 fill the space formed between the indoor plate 100 and the outdoor plate 120 to further improve strength and increase the section modulus of the ceramic pad 130. It is possible to further improve the rigidity and insulation performance of the entire fire door.

The outdoor plate 120 extends in the direction in which the first bent surface 122 is provided after the outdoor overlapping surface 125 overlaps the third bent surface 124, and does not overlap the second bent surface 123. A spaced surface 126 overlapping the outdoor surface 121 may be provided.

Through this, the condensation prevention pad 420 attached inside the door frame 200 to the condensation prevention groove 410 formed on the top or bottom of the door frame 200 prevents the temperature difference between the indoor and outdoor areas of the door frame 200. It can minimize thermal bridging and dew condensation.

In addition, since the flame retardant material is provided between the door frame 200 and the door leaf 100 with the flame retardant gasket 300 surrounding all the outer rims of the door 100, the risk of harmful gas leaking in the event of a fire is reduced by the airtight end 320 It is possible to prevent a situation in which the flame is prevented and the flame spreads due to the completely sealed space between the door frame 200 and the door leaf 100 while combining the flame retardant material and the hinge 500.

In the above, the condensation prevention and fire diffusion prevention structure fire doors according to embodiments of the present invention have been described, but the spirit of the present invention is not limited to the embodiments presented herein. In addition, those skilled in the art who understand the spirit of the present invention may easily suggest other embodiments by adding, changing, deleting, adding, etc., components within the scope of the same spirit, but this is also within the spirit of the present invention. will say that

100: door 110: interior plate
111: indoor surface 112: bent inclined surface
113: bending plane 114: indoor overlapping surface
120: outdoor plate 121: outdoor surface
122: first bending surface 123: second bending surface
124: third bending surface 125: outdoor overlapping surface
130: ceramic pad 200: door frame
210: inner plate 220: outer plate
300: flame retardant gasket 310: gasket surface
320: airtight end 330: close end
400: condensation prevention unit 410: condensation prevention groove
420: condensation prevention pad 421: pad body plate
422: pad attachment surface 423: pad protrusion
424: circulation gap 430: double condensation prevention groove
440: double anti-condensation pad 500: hinge

Claims (13)

A door having a heat insulating member therein;
a door frame having an inner plate to which the door leaf is coupled and an outer plate to be fixed outdoors;
a flame retardant gasket provided to cover all side surfaces of the door leaf to prevent leakage of harmful gas and flame between the door leaf and the door frame in the event of a fire; and
A fire door with a condensation prevention and fire diffusion prevention structure including a condensation preventing unit for blocking thermal bridge and condensation by combining the grooves perforated in the door frame with a pad inside the door frame. According to claim 1,
The condensation preventing part is formed only on the upper and lower portions of both side surfaces of the door frame, and the condensation preventing groove is formed in the inner plate in the longitudinal direction;
An anti-condensation and anti-fire diffusion structure fire door, characterized in that it has a condensation prevention pad attached from the inside of the door frame and coupled to the condensation prevention groove and blocking thermal bridge and condensation. According to claim 2,
The anti-condensation pad includes a pad body plate,
A pad attachment surface provided on one surface of the pad body plate and attached to one surface of the inner plate;
Anti-condensation and anti-fire diffusion structure fire door, characterized in that it has a pad protrusion protruding from one side of the pad body plate and being inserted into the anti-condensation groove and preventing thermal bridge and condensation occurring in the door frame. According to claim 3,
When the anti-condensation pad is inserted into the anti-condensation groove, a certain space is provided between the pad protrusion and the anti-condensation groove, and a part of the pad body plate is not attached to form a circulation gap for circulating air. A fire door with a structure to prevent condensation and fire spread. According to claim 4,
In order to further block thermal bridge and condensation, the anti-condensation unit includes a double anti-condensation groove for perforating one more anti-condensation groove in the doorframe to which the hinge is not coupled, and the pad protrusion to be coupled to the double anti-condensation groove. Condensation prevention and fire diffusion prevention structure fire door, characterized in that provided in one more protruding double condensation prevention pad. According to claim 1,
The door leaf includes an indoor surface, a bending inclined plane bent in an inward oblique direction from the indoor surface, a bending plane bent in a flat direction from the bending inclined plane, and an inwardly bent surface on the bending plane to form a gap between the bending plane and the indoor surface. an indoor plate forming an indoor overlapping surface facing the other surface;
An outdoor surface, a first bending surface bent in one direction from the outdoor surface, a second bending surface bent inward from the first bending surface, and a third bending surface bent in one direction from the second bending surface; an outdoor plate that is bent inwardly from the third curved surface to form an outdoor overlapping surface abutting the other surfaces of the first, second, and third bent surfaces; and
A fire door with a structure preventing condensation and preventing fire diffusion, characterized in that it comprises a ceramic pad provided between the indoor plate and the outdoor plate to increase the insulation performance of the door leaf. According to claim 6,
The flame retardant gasket has a gasket surface attached to the bending plane;
An airtight end formed at one end of the gasket surface and attached to the second bent surface;
The anti-condensation and fire diffusion prevention structure fire door, characterized in that it has a close end that is cut in an oblique direction from the other end of the gasket surface and attached to the bent inclined surface. According to claim 7,
The bent inclined plane and the close end portion are provided such that an angle bent at an internal oblique angle of the bent inclined plane and an end cut in an oblique direction of the close contact end portion are provided so as to secure a space so that the gap between the door leaf and the door frame is not narrowed. Condensation prevention and fire diffusion prevention structure fire door, characterized in that. According to claim 8,
The flame retardant gasket is a fire door with a condensation prevention and fire diffusion prevention structure, characterized in that the space between the door frames is sealed while the coating foam material foamed by heat is mixed together and expands in the event of a fire. According to claim 9,
The indoor plate and the outdoor plate are fire doors with a structure preventing condensation and preventing fire spread, characterized in that ceramic boards are attached to the inside at the upper and lower ends of the door. According to claim 10,
The door leaf is coupled by a riveting operation in which a rivet member is installed in a state in which the flame retardant gasket, the indoor plate, the ceramic pad, and the outdoor plate are sequentially in close contact with each other. According to claim 8,
A first fitting portion protruding to be inserted into a space formed between the indoor plate, the outdoor plate, and the flame retardant gasket of the ceramic pad;
A fire door with a structure preventing condensation and preventing fire diffusion, characterized in that it further comprises a second fitting part protruding to be inserted into the space formed between the outdoor plate and the indoor plate. According to claim 12,
The outdoor overlapping surface of the outdoor plate overlaps with the third curved surface and then extends in the direction of the first curved surface, and does not overlap with the second curved surface. Condensation prevention and fire diffusion prevention structure fire door, characterized in that.

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