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KR-102962071-B1 - Double swing type fire door for Exterior Observation with windbreaker and heat-Insulating door

KR102962071B1KR 102962071 B1KR102962071 B1KR 102962071B1KR-102962071-B1

Abstract

The present invention relates to a double-hinged thermal insulation fire door for external observation that uses a thermal insulation door having a windbreak and a step with two foam gaskets installed in parallel, thereby blocking the inflow of smoke and heat between the doors or between the top of the door and the door frame in the event of a fire, delaying the warping (damage) of the door, and simultaneously allowing observation of the outside from the inside.

Inventors

  • 김성배
  • 김종원

Assignees

  • 세기에프에스디(주)

Dates

Publication Date
20260507
Application Date
20250526

Claims (6)

  1. Two thermal insulation doors (100a, 100b) installed on each side of the passageway; An upper door frame (200) that is in close contact with the top of the heat-insulating door (100) and Side door frame (300) installed on both sides of the passage and connected to one corner of the thermal insulation door (100) by a hinge (1); It includes a windbreak (400, 500) that is installed vertically along the sides of the two thermal insulation doors and surrounds the gap (b) between the two thermal insulation doors to block the inflow of flames, smoke, and heat. The above windbreak (400, 500) includes a first sealing part (410, 510) and a second sealing part (420, 520) formed by bending a steel plate, and The first sealing portion (410, 510) comprises a first fixing portion (411, 511) coupled to the front steel plate or rear steel plate of either one of the thermal insulation doors, a cover portion (412, 512) that is bent upward or downward from the first fixing portion and extends along the horizontal direction to the side of either one of the thermal insulation doors, and a contact portion (413, 513) formed by bending the end of the cover portion, and The second sealing part (420, 520) comprises a second fixing part (421, 521) coupled to the steel plate of the thermal insulation door to which the first sealing part is fixed and to the rear steel plate or front steel plate on the opposite side, a second cover part (422, 522) that is bent upward or downward from the second fixing part and then extends across the corner of the door along the vertical direction, and a first packing block part (423, 523) in which the end of the second cover part is extended to a predetermined length and then bent into a U-shape having a predetermined height and width. The windbreak (400, 500) is installed on each side of the two heat-insulating doors by assembling the first packing block portion (423, 523) of the second sealing portion (420, 520) onto the lower or upper surface of the cover portion (412, 512) of the first sealing portion (410, 510). Here, the first packing block portion (423, 523) is assembled on the lower or upper surface of the cover portion (412, 512) such that a second packing block portion (c), which is an empty space capable of filling a gasket, is formed between the first sealing portion (410, 510) and the contact portion (413, 513). The width (S) of the above cover portion (412, 512) is 2 to 4 times larger than the width (x) of the first packing block portion (423, 523), and The above windbreak (400, 500) is characterized by including foam gaskets (430, 530) inserted into the first packing block section (423, 523) and the second packing block section (c), respectively, in a double-hinged heat-insulating fire door.
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  3. In claim 1, the thermal insulation door (100, 100a, 100b) Front steel plate (10) of a predetermined height; A rear steel plate (20) joined to the front steel plate (10) at a predetermined distance apart; Insulating material (30) filled between the front steel plate and the rear steel plate: One or more upper heat-insulating frames (40) are fixed to the upper edge of the combined front steel plate (10) and rear steel plate (10), and The upper heat shield frame (40) comprises a magnesium rod (41) having a predetermined length (L) and width (w), a front steel member (42) located on the front of the magnesium rod, and a rear steel member (43) located on the rear of the magnesium rod, wherein the rear steel member (43) is positioned below the front steel member and assembled with a screw (44). The upper heat shield frame (40) has a step (a) formed by the height difference (h) between the front steel member (42) and the rear steel member, and The above-described heat-insulating fire door is characterized by having a step (a) between the upper front side and the upper rear side as the upper heat-insulating frame (40) extending along the horizontal direction is installed on the upper side, and the step (a) is defined by the height (H) of the front steel member (42) or the rear steel member and the height difference (h) between the front steel member (42) and the rear steel member.
  4. In claim 3, the heat-insulating door (100) includes a side heat-insulating frame (50) and a reinforcing heat-insulating frame (60), and The above-described side heat insulation frame (50) comprises a magnesium rod (51), a front steel member (52) located on the front of the magnesium rod, and a rear steel member (53) located on the rear of the magnesium rod, wherein the rear steel member (53) is positioned below the front steel member and assembled with a screw (44). A double-hinged heat-insulating fire door characterized by the above-described reinforcing heat-insulating frame (60) comprising a magnesium rod (61), an upper steel member (62) and a lower steel member (63) having the same length and width as the magnesium rod (61) and located on the upper and lower surfaces of the magnesium rod, respectively, and a screw (44) for fixing the upper steel member, the magnesium rod, and the lower steel member.
  5. In claim 4, the front steel member (42, 52), lower steel member (43, 53), upper steel member (62) and lower steel member (63) are characterized by having a cross-section of a “□” structure (vertical width (W) × height (H)), a double-hinged heat-insulating fire door.
  6. In claim 3, the upper door frame (200) is characterized by including a first ledge (210) bent to correspond to the step (a) at the top of the door (100), a second ledge (220) bent to correspond to the upper corner portion of the rear steel plate (20), and a gasket (240) packed between them.

Description

Double swing type fire door for exterior observation with windbreaker and heat-insulating door The present invention relates to a double-hinged thermal insulation fire door for external viewing that includes a windbreak and a thermal insulation door, and more specifically, to a double-hinged thermal insulation fire door for external viewing that uses a windbreak with two foam gaskets installed in parallel and a thermal insulation door having a step to block the inflow of smoke and heat between the doors or between the top of the door and the door frame in the event of a fire, while delaying the warping (damage) of the door and simultaneously allowing observation of the outside from the inside. Generally, fire doors made of steel plates are installed at the entrances of apartments, homes, and offices to prevent the spread of flames in the event of a fire. Conventional fire doors are primarily used as entrance doors in general residences, apartments, factories, offices, and prefabricated temporary buildings. They are installed in fire compartments organized by floor, area, and use to prevent further spread of fire and minimize damage in the event of a fire, and the doors must be able to suppress fire spread and deformation even under intense internal heat. These fire doors are manufactured by forming the metal front and back plates separately to lighten the weight of the metal fire doors, and inserting insulating material into the space between them, thereby reducing the weight of the fire doors while enhancing thermal insulation, soundproofing, and heat insulation effects. Additionally, fire doors are mainly installed by connecting them to a door frame fixed to the wall with hinges, or by using a pivot (hinge) fixed to the floor surface. Meanwhile, according to Article 6 (Structural Standards for Fire Compartments, etc.) of the Rules on Standards for Evacuation and Fire Protection Structures of Buildings, members used in fire compartments must meet the following requirements: ① fire resistance performance (maintaining structural stability for a specified period), ② flame-retardant performance (flames must not spread to the opposite side), and ③ thermal insulation performance: the temperature on the opposite side must not exceed the standard value for a certain period. For example, a thermal insulation fire door (fire-resistant structure) must have an average door leaf temperature rise of 140°C or less over 35 minutes (fire door on the flame-facing side), a maximum door leaf temperature rise of 180°C or less, and a maximum door frame temperature rise of 360°C or less. Furthermore, fire doors must satisfy fire resistance performance requirements regarding door leaf warping, the state of connection with the door frame, and structural safety during the specified test time. Korean Registered Patent No. 10-2531739 of FIG. 1 discloses a fire door comprising a first and second steel plate and a structural reinforcing frame installed between the first and second steel plates to prevent structural deformation. Although Korean Registered Patent No. 10-2531739 blocks heat transfer by attaching foam expansion tape to a vertical reinforcing frame (70), the upper frame (40), lower frame (50), and side frame (60), which are structural reinforcing frames (30), are all joined by a piece through surface contact between the first steel plate and the second steel plate, resulting in a problem of increased heat transfer between the first steel plate and the second steel plate. In addition, the top of the fire door of Fig. 1 is engaged with a door frame having a step to maintain airtightness, but there is a small gap between the top of the door and the contact surface of the door frame, so it was not easy to block heat to the inside. Korean Registered Patent No. 10-0920530 discloses a fire door and a fire door frame that block heat and smoke caused by a fire from penetrating into the interior through the edges of the fire door by forming irregularities on the edges of the fire door and the edges of the fire door frame and allowing the irregularities to interlock (see Fig. 2). However, Korean Registered Patent No. 10-0920530 forms irregularities on the top plate or back plate forming the fire door, but a problem has been raised that in this case, warping of the door leaf occurs at high temperatures, making it difficult to satisfy the heat insulation conditions. In addition, the present applicant's Korean registered patent No. 10-2318940 discloses a windbreak in which a sealing block and a fixing block catch on each other to prevent the doors from opening further when a pair of doors are forcibly opened simultaneously by flames and hot air (see Fig. 3). However, while the above Korean registered patent can prevent the two doors from opening completely, the sealing block and the fixing block, which are made of metal, come into contact, causing rapid heat transfer to the front and rear steel plates of the door, and also rapidly inflow