KR101623013B1 - Fireproof doors using aerated concrete - Google Patents

Fireproof doors using aerated concrete Download PDF

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Publication number
KR101623013B1
KR101623013B1 KR1020150184723A KR20150184723A KR101623013B1 KR 101623013 B1 KR101623013 B1 KR 101623013B1 KR 1020150184723 A KR1020150184723 A KR 1020150184723A KR 20150184723 A KR20150184723 A KR 20150184723A KR 101623013 B1 KR101623013 B1 KR 101623013B1
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KR
South Korea
Prior art keywords
fire
fire door
plate
solenoid valve
foamed concrete
Prior art date
Application number
KR1020150184723A
Other languages
Korean (ko)
Inventor
임성호
Original Assignee
임성호
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Filing date
Publication date
Application filed by 임성호 filed Critical 임성호
Priority to KR1020150184723A priority Critical patent/KR101623013B1/en
Application granted granted Critical
Publication of KR101623013B1 publication Critical patent/KR101623013B1/en

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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/10—Fire-proof curtains
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E06B5/168—Shape of edges of wing and/or its frame specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132—Doors
    • E05Y2900/134—Fire doors

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Special Wing (AREA)

Abstract

The present invention relates to a fire door using foamed concrete. The fire door is cooled by the fire water sprayed from the injection nozzle for cooling to open the fire door by cooling the fire door and the handle, and the fire door It is possible to suppress the fire in the vicinity and to remove the smoke by the water to be sprayed from the spray nozzle for spraying, so that it is much easier to escape and rescue, thereby protecting valuable lives and property.

Description

Fireproof doors using aerated concrete using fire-

The present invention relates to a fire door using foamed concrete. More specifically, it relates to a fire door of a fire door, and when a fire occurs, evolving water is sprayed to the front and rear sides of the fire door to assist the fire suppression and the smoke is removed by spraying the smoke removing water, And by cooling the fire door itself by spraying the cooling water, it is possible to open and exit the fire door quickly and easily without causing serious burns to the people who are trying to open and escape the fire door, And a fire door using a foamed concrete to protect property.

Generally, a fire door is a door having a predetermined fire performance and an automatic closing mechanism for the purpose of preventing the spread of a fire.

According to the regulations of the Building Enforcement Ordinance and the rules for building evacuation and fire protection structure, it is necessary to maintain a closed fire door at all times or to automatically detect the smoke, temperature, It is stipulated that the fire door of all floors shall be closed automatically when the fire signal from the floor is satisfied and that it should satisfy at least one hour of non-heat shielding and more than 30 minutes of heat shielding (heat shielding) And a gypsum plate of 12 mm or more in the indoor side and an iron plate in the outdoor side should be attached to the indoor side, and the performance of the non-heating side should be more than 30 minutes.

Since the present invention relates to a rear-end fire door, the present invention will be described.

When a fire occurs on the indoor side where the fire door is installed, it is easily heated because the fire handle is heated and the people who want to escape are trying to open the fire door by holding the handle of the fire door and heating the fire door handle. It is a phenomenon that when people open fire doors and escape, people who can maintain enough lives are subjected to a sad accident that leads to death.

As a prior art related to this, a "fire door with a built-in core" (hereinafter referred to as "prior art") having a plurality of holes for filling is disclosed in Korean Registered Utility Model No. 20-0152734 (registered on April 29, 1999) The assembly core formed by molding a lightweight foamed concrete so that the metal mesh is integrally formed on the lower surface is made of metal, and the assembly core is inserted into the lower body of the door composed of the lower body and the upper body. Then, the foamed urethane foam And filling the gap between the lower door frame and the lower door frame, filling the gap with the upper body, and assembling the upper body to the lower body together with a conventional method, thereby providing the fire door with the assembled core material and filling the lower door frame with the mixture of concrete and vermiculite mortar. It is easy to work compared to a fire door, and there is no space inside the fire door after the operation to prevent defects such as twisting or sounding The effect and sound insulation effect of being able discloses a technique to remarkably.

However, since the fire door itself and the handle of the fire door are heated when the fire occurs, the prior art has a problem similar to that of the conventional fire door.

Therefore, it is required to develop a technology that minimizes the heating of the fire door when a fire occurs, and can contribute to the suppression of fire, and that minimizes casualties caused by gas asphyxiation by reducing gas.

Korean Registered Utility Model No. 20-0152734 (Registered on April 29, 1999) "Fire door with assembled core"

Accordingly, it is an object of the present invention to provide a fire extinguishing system capable of minimizing suffocation due to smoke by spraying evapotranspiration water in front of and behind fire doors when fire occurs, By cooling the fire door itself by spraying, the fire door can be opened and escaped quickly and easily by people who are trying to open the fire door without seriously burning the hands, so that the foamed concrete To provide a fire door.

In order to accomplish the above object, the present invention provides a door frame comprising: A front and a rear plate which are spaced apart from each other at a predetermined interval and which have upper and lower sides and upper and lower sides of the front and rear plates; A foamed concrete plate filled in the inside of the iron gate door body; A water supply pipe installed in the canopy and connected to the fire hydrant through a solenoid valve; A shaft pipe portion bent downward at a front end portion of the water supply pipe and inserted between a lower surface of the wittle and an upper end portion of the wagging portion and inserted between the front plate and the rear plate; A spray tube inserted between the front plate and the rear plate and rotatably inserted into the shaft pipe portion and having a hinge portion connected to the water pipe; A cooling spray nozzle connected to the spray tube and protruding forward and rearward through the front plate and the rear plate, an injection nozzle for evolving and a spray nozzle for spraying; A lower end hinge rotatably supporting a lower end portion of the main body of the fire door, A control unit for receiving a sensing signal of the temperature sensor and outputting a control command to maintain the solenoid valve in a closed state when the sensed temperature is lower than a predetermined temperature, And control means for outputting a control command for opening the solenoid valve when the sensed temperature is higher than the set temperature. The present invention provides a fire door using foamed concrete.

According to the fire door using the foamed concrete of the present invention, the main body and the handle of the iron fire door are cooled by the fire water sprayed from the injection nozzle for cooling so that the fire door can be opened. By the fire water sprayed from the fire nozzle for evacuation, The fire can be suppressed, and the smoke can be removed by the water for fire extinguishing sprayed from the spraying nozzle for spraying, so that escape and rescue can be much facilitated, so that valuable lives and property can be protected.

1 to 4 show a preferred embodiment of a fire door using foamed concrete according to the present invention,
1 is a perspective view of a fire door using foamed concrete according to the present invention,
2 is an exploded perspective view of a fire door using foamed concrete according to the present invention,
FIG. 3 is an explanatory view of the operation of the fire door using the foamed concrete according to the present invention,
4 is a functional block diagram showing the control means.

Hereinafter, a fire door using foamed concrete according to the present invention will be described in detail with reference to the preferred embodiments illustrated in the accompanying drawings.

The fire door using the foamed concrete according to the present invention is composed of a steel door frame 100 composed of a two-sided frame 110, a wattle 120 and a suture 130; A front plate 210 and a rear plate 220 which are spaced apart from each other with a predetermined distance therebetween and iron plates 230 having upper and lower left and right sides of the front plate 210 and the rear plate 220, A fire door main body 200; A foamed concrete plate 300 filled in the inside of the steel fire door main body 200; A water supply pipe 400 installed inside the canopy 120 and connected to the fire hydrant through a solenoid valve 410; A shaft pipe portion 500 bent downward at a front end of the water supply pipe 400 and inserted between a lower surface of the wuttle 120 and an upper end portion of the wing portion 230 and inserted between the front plate 210 and the rear plate 220, Wow; A spraying pipe 600 inserted between the front plate 210 and the rear plate 220 and having a hinge portion 610 rotatably inserted into the shaft pipe portion 500 and connected to the water supply pipe 400; A cooling spray nozzle 710 and an evolving spray nozzle 720 connected to the spray tube 600 and protruding forward and rearward through the front plate 210 and the rear plate 220, An injection nozzle 730; A lower end hinge 800 for rotatably supporting a lower end portion of the iron fire door main body 200 with respect to the skirt 130; A temperature sensor 910 embedded in the foamed concrete plate 300 for measuring a temperature and a control command for opening the solenoid valve 410 when the temperature detected by the temperature sensor 910 is higher than a set temperature, A control unit 900 having a control unit 920 for outputting the control signal; .

The wood frame 110, the woottail 120 and the suttle 130 constituting the iron door frame 100 are formed by bending an iron plate so that the inside of the iron frame is hollow and the engaging jaws 140 for hanging the upper, And the wood frame 110, the wattles 120 and the suture 130 are welded together to form a single iron door frame 100.

The front face plate 210 and the rear face plate 220 of the steel fire door main body 200 are formed of steel plates and the upper and lower and left and right end portions are bent and welded to each other to form the fin portions 230, do.

The foamed concrete 300 is manufactured by bending the upper and lower ends of the front plate 210 and the rear plate 220 and welding the front and rear plates 220 and 220 to form the front and rear plates 220 and 220, .

The foamed concrete plate 300 is covered with a wire mesh on the outer surface of the foamed concrete plate 300 so that a part of the wire mesh is buried in the foamed concrete 300 and exposed on the surface of the foamed concrete 300 have. In addition, a heat insulating material may be bonded to the front and back surfaces of the foamed concrete plate 300.

The water supply pipe 400 is connected to a fire hydrant (not shown) provided on each floor of the building, and may be connected to and disconnected from the fire hydrant by a solenoid valve 410.

Since the solenoid valve 410 may be accompanied by a power failure when a fire occurs, it is preferable to use a solenoid valve as a self-holding type that can maintain the opened state even if the power source is shut down after a power failure.

The water supply pipe 400 can be piped through a corner portion between the bottom surface of the slab and the wall surface of the building and can be embedded in the lower surface of the slab in advance during the building process.

The upper end of the iron gate 210 is rotatably supported by the wing 120 by a shaft portion 500 and a hinge portion 610. A lower end of the iron gate 210 is connected to the lower hinge 800, Is rotatably supported by a hinge hole (810) formed at the lower end of the fire door main body (200).

The shaft pipe portion 500 may be formed by bending the water supply pipe 400, or may be connected to another pipe by welding.

A bearing and a mechanical seal can be inserted between the shaft pipe portion 500 and the hinge portion 610 of the spray pipe 600 to smoothly rotate relative to each other and to prevent water leakage.

The cooling spray nozzle 710, the evolving spray nozzle 720 and the spray nozzle 730 spray fire water to be supplied from the fire hydrant through the water supply pipe 400 and the spray pipe 600, The spray nozzle 710 injects the fire water upward to cool the iron fire door main body 200 and the handle 240 while spraying the fire water for spraying down again and the fire nozzle 720 for evacuation advances the fire water So that the flame can be suppressed. The spraying nozzle 730 for spraying water atomizes the water for spraying, spraying the spray water forward and backward to sink the smoke, thereby minimizing the suffocation by the gas.

For this purpose, it is preferable that the cooling spray nozzle 710 is disposed at a portion corresponding to the handle 240, and the evolution spray nozzle 720 and the smoke removal spray nozzle 730 are arranged alternately.

The control unit 920 receives a sensing signal from the temperature sensor 910 and outputs a control command to maintain the solenoid valve 410 in a closed state when the sensed temperature is lower than the set temperature. And to output a control command to cause the solenoid valve 410 to open.

The control unit 920 is preferably installed in the fire hydrant for safety.

The control unit 920 controls not only the detection signal of the temperature sensor 910 but also the signals of the fire sensor 940 installed on the ceiling and the " The solenoid valve 410 may be controlled according to the solenoid valve 410.

Hereinafter, the action of the fire door using the foamed concrete according to the present invention will be described.

The solenoid valve 410 is closed while the power to the solenoid valve 410 is normally closed and the water supply pipe 400 and the spray pipe 600 are maintained in a state in which no water for fire extinguishing is supplied.

When a fire occurs, the temperature of the fire door increases according to the flame and the heat, the temperature sensor 910 detects the temperature, and the detection signal is transmitted to the controller 920.

If the temperature sensed by the temperature sensor 910 is higher than a predetermined temperature (for example, 100 ° C), the controller 920 outputs an open control command to the solenoid valve 410 so that the solenoid valve 410 So that the digestion water of the fire hydrant is supplied to the water supply pipe (600) through the water supply pipe (400) and the shaft pipe (500).

The water for fire extinguishing water supplied to the water supply pipe 600 is connected to the water supply pipe 600 and is discharged to the front and rear through the cooling injection nozzle 710, the evolutionary injection nozzle 720 and the growth injection nozzle 730, .

At this time, the cooling spray nozzle 710 injects the fire water upward, and the fire water for spraying flows downward again to cool the front panel 210 and the rear panel 220 of the fire door main body 200 In addition, since the handle 240 is cooled, when the handle 240 is gripped, a serious image is not applied. Therefore, a person who wants to escape or a person who wants to rescue from the outside can hold the handle 240 to open and escape or rescue the fire door.

The injection nozzle 720 for evacuation is able to suppress the fire by strongly spraying the water for fire fighting forward and backward. Accordingly, when a fire occurs, the fire near the fire door can be suppressed, thereby providing an escape route.

The spraying nozzle 730 for spraying water atomizes the water for spraying and spraying the spraying water forward and backward to grind the smoke, thereby removing the smoke. Thus, people in the fire space can minimize the choking by the gas.

As a result, the fire door using the foamed concrete according to the present invention can cool the iron fire door main body 200 and the handle 240 by the fire water sprayed from the cooling injection nozzle 710 to open the fire door, The fire near the fire door can be suppressed by the fire water sprayed from the nozzle 720 and the smoke can be removed by the water for fire fighting sprayed from the spraying nozzle 730 for discharging, It will protect people and property.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea 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 thereof should be construed as falling within the scope of the present invention.

100: iron door frame 110:
120: Wittle 130: Sewing
200: iron fire door body 210: front plate
220: rear plate 240: handle
300: foamed concrete plate 400: water pipe
410: Solenoid valve 500: shaft pipe
600: Distributor 610: Hinge
710: Cooling spray nozzle 720: Evaporating spray nozzle
730: Discharge jet nozzle 800: Lower hinge
810: Hinge hole 900: Control means
910: Temperature sensor 920:
930: Fire alarm switch 940: Fire detector

Claims (1)

A door frame 100 made up of a pair of side frames 110, a wicket 120, and a sock 130; A front plate 210 and a rear plate 220 which are spaced apart from each other with a predetermined distance therebetween and iron plates 230 having upper and lower left and right sides of the front plate 210 and the rear plate 220, A fire door main body 200; A foamed concrete plate 300 filled in the inside of the steel fire door main body 200; A water supply pipe 400 installed inside the canopy 120 and connected to the fire hydrant through a solenoid valve 410; A shaft pipe portion 500 bent downward at a front end of the water supply pipe 400 and inserted between a lower surface of the wuttle 120 and an upper end portion of the wing portion 230 and inserted between the front plate 210 and the rear plate 220, Wow; A spraying pipe 600 inserted between the front plate 210 and the rear plate 220 and having a hinge portion 610 rotatably inserted into the shaft pipe portion 500 and connected to the water supply pipe 400; A cooling spray nozzle 710 and an evolving spray nozzle 720 connected to the spray tube 600 and protruding forward and rearward through the front plate 210 and the rear plate 220, An injection nozzle 730; A lower end hinge 800 for rotatably supporting a lower end portion of the iron fire door main body 200 with respect to the skirt 130; A temperature sensor 910 embedded in the foamed concrete plate 300 for measuring a temperature; a solenoid valve 410 closed when the sensed temperature is lower than a predetermined temperature by receiving a sensing signal of the temperature sensor 910; A control unit 900 having a control unit 920 for outputting a control command for outputting a control command for maintaining the solenoid valve 410 in a state where the sensed temperature is higher than a set temperature and for opening the solenoid valve 410; A fireproof door made of foamed concrete comprising:
KR1020150184723A 2015-12-23 2015-12-23 Fireproof doors using aerated concrete KR101623013B1 (en)

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KR1020150184723A KR101623013B1 (en) 2015-12-23 2015-12-23 Fireproof doors using aerated concrete

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101714738B1 (en) * 2016-04-26 2017-03-09 (주)한동엔지니어링 Door system for fighting fire in apartment house
KR101718326B1 (en) * 2016-07-29 2017-03-21 (주)경진건축사사무소 Apartment house fire door structure
KR101744219B1 (en) * 2016-12-02 2017-06-09 (주)명광엔지니어링건축사사무소 Fire door for fire-fighting in building for non proliferation of fire
KR101785507B1 (en) * 2017-06-26 2017-10-17 주식회사 예인종합건축사사무소 A door having a structure of lighting and ventilation, and having a cooling system for a handle
CN108179963A (en) * 2018-01-12 2018-06-19 安徽省金鹏节能科技有限公司 A kind of wood moulding aluminum alloy doors and windows with fire-extinguishing function concurrently
KR20190000072A (en) 2017-06-22 2019-01-02 이종택 Fire door for foaming stoneboard
KR20190117306A (en) 2018-04-06 2019-10-16 고엄식 Porous slab structure with fire protection and / or soundproofing
KR102063707B1 (en) * 2019-07-03 2020-01-09 주식회사 에스에이에스 Artificial intelligence door system
CN109626932B (en) * 2019-01-14 2021-08-06 青岛天利兴达新型建材有限公司 Autoclaved aerated concrete plate and preparation method thereof
CN113550683A (en) * 2021-08-03 2021-10-26 吴菊萍 Weaving workshop station fire prevention smoke barrier door plant subassembly
KR102348446B1 (en) * 2021-06-30 2022-01-10 (주)재원엔지니어링 Firefighting device for entrance door by apartment house
CN114412336A (en) * 2022-01-18 2022-04-29 浙江天元门业有限公司 Fireproof door with good fireproof performance
CN114592782A (en) * 2022-03-17 2022-06-07 湖南奥力新材料科技股份有限公司 Heat-insulation fireproof door
CN114837532A (en) * 2022-06-07 2022-08-02 九冶建设有限公司 Aluminum alloy fireproof window with self-locking function for logistics park
CN115142775A (en) * 2022-07-15 2022-10-04 佳优建筑工程装饰(枣庄)有限公司 Prevent fire door with supplementary function of fleing
CN115217404A (en) * 2022-07-22 2022-10-21 内蒙古工业大学 Fireproof door and using method thereof
CN116163467A (en) * 2022-12-27 2023-05-26 利辛县宝城建筑工业化有限公司 Fireproof structure of concrete prefabricated sandwich composite wallboard

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101512000B1 (en) 2013-10-16 2015-04-22 김영근 The door that can prevent from fire spreading
KR101544679B1 (en) 2014-09-26 2015-08-21 정민시 Fire Door

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101512000B1 (en) 2013-10-16 2015-04-22 김영근 The door that can prevent from fire spreading
KR101544679B1 (en) 2014-09-26 2015-08-21 정민시 Fire Door

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101714738B1 (en) * 2016-04-26 2017-03-09 (주)한동엔지니어링 Door system for fighting fire in apartment house
KR101718326B1 (en) * 2016-07-29 2017-03-21 (주)경진건축사사무소 Apartment house fire door structure
KR101744219B1 (en) * 2016-12-02 2017-06-09 (주)명광엔지니어링건축사사무소 Fire door for fire-fighting in building for non proliferation of fire
KR20190000072A (en) 2017-06-22 2019-01-02 이종택 Fire door for foaming stoneboard
KR101785507B1 (en) * 2017-06-26 2017-10-17 주식회사 예인종합건축사사무소 A door having a structure of lighting and ventilation, and having a cooling system for a handle
CN108179963A (en) * 2018-01-12 2018-06-19 安徽省金鹏节能科技有限公司 A kind of wood moulding aluminum alloy doors and windows with fire-extinguishing function concurrently
KR20190117306A (en) 2018-04-06 2019-10-16 고엄식 Porous slab structure with fire protection and / or soundproofing
CN109626932B (en) * 2019-01-14 2021-08-06 青岛天利兴达新型建材有限公司 Autoclaved aerated concrete plate and preparation method thereof
KR102063707B1 (en) * 2019-07-03 2020-01-09 주식회사 에스에이에스 Artificial intelligence door system
KR102348446B1 (en) * 2021-06-30 2022-01-10 (주)재원엔지니어링 Firefighting device for entrance door by apartment house
CN113550683A (en) * 2021-08-03 2021-10-26 吴菊萍 Weaving workshop station fire prevention smoke barrier door plant subassembly
CN113550683B (en) * 2021-08-03 2023-11-10 吴菊萍 Station fireproof smoke-isolation door plate assembly for textile workshop
CN114412336A (en) * 2022-01-18 2022-04-29 浙江天元门业有限公司 Fireproof door with good fireproof performance
CN114412336B (en) * 2022-01-18 2023-07-14 浙江天元门业有限公司 Fireproof door with good fireproof performance
CN114592782A (en) * 2022-03-17 2022-06-07 湖南奥力新材料科技股份有限公司 Heat-insulation fireproof door
CN114592782B (en) * 2022-03-17 2023-08-29 湖南奥力新材料科技股份有限公司 Heat-insulating fireproof door
CN114837532A (en) * 2022-06-07 2022-08-02 九冶建设有限公司 Aluminum alloy fireproof window with self-locking function for logistics park
CN115142775A (en) * 2022-07-15 2022-10-04 佳优建筑工程装饰(枣庄)有限公司 Prevent fire door with supplementary function of fleing
CN115217404A (en) * 2022-07-22 2022-10-21 内蒙古工业大学 Fireproof door and using method thereof
CN115217404B (en) * 2022-07-22 2023-11-03 内蒙古工业大学 Fireproof door and application method thereof
CN116163467A (en) * 2022-12-27 2023-05-26 利辛县宝城建筑工业化有限公司 Fireproof structure of concrete prefabricated sandwich composite wallboard
CN116163467B (en) * 2022-12-27 2024-04-09 利辛县宝城建筑工业化有限公司 Fireproof structure of concrete prefabricated sandwich composite wallboard

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