Fireproof door and automatic cooling method thereof

Abstract

The invention discloses a fireproof door and an automatic cooling method thereof, and belongs to the technical field of fireproof doors. The fireproof door comprises a door leaf and a pipe end arranged on the surface of the door leaf and used for absorbing smoke; the pipe ends are distributed on the upper half section areas of the front face and the back face of the door leaf, air sucked by the smokeless side pipe end is used for mixing and reducing the temperature of smoke sucked by the smoke side pipe end, meanwhile, the input ends of the pipe ends stretch out of penetrating holes formed in the door leaf, and the pipe ends are installed on the vertical plate. The vertical plate covering the penetrating hole is driven by a lifting mechanism installed in the door leaf to drive the pipe end to move up and down in the door leaf. According to the fireproof door and the automatic cooling method thereof, auxiliary cooling can be comprehensively conducted on the fireproof door, smoke and the nearby escape environment, the application range is wider, and the better auxiliary escape effect can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fireproof doors, in particular to doors, windows or similar closed objects for special purposes, and in particular to a fireproof door and an automatic cooling method thereof. Background Art

[0002] A fire door is a door structure used to separate the activity area and the entrance and exit area of ​​a building. Since people's work and life are mostly concentrated in the activity area, the occurrence of fire in the building is generally concentrated in the activity area. The fire door can effectively prevent the fire from spreading through the entrance and exit area in the early stage. For example, a fire door with the announcement number CN104487645B in the prior art includes a core, a first decorative panel and a second decorative panel. The core includes: (a) a fire-resistant center panel having a bottom, a top, a first side, a second side, a first end and a second end, wherein the fire-resistant center panel is made of a first fire-resistant material, and (b) an extruded fire-resistant frame attached to the first side, the second side, the first end and the second end of the fire-resistant center panel, wherein the extruded fire-resistant frame is made of a second fire-resistant material having a higher density than the first fire-resistant material, the first decorative panel is attached to the top of the fire-resistant center panel and the extruded fire-resistant frame, and the second decorative panel is attached to the bottom of the fire-resistant center panel and the extruded fire-resistant frame.

[0003] Another example is a fire door and fire door frame with announcement number CN102713124B in the prior art. More specifically, it relates to a fire door and fire door frame that can block hot air by flowing water inside and prevent toxic gas from flowing into the room by sealing the gap between the door frame and the door during a fire. The fire door of the invention includes a water receiving portion, a groove, a water expansion body, a suction port and a supply hole. The water receiving portion is formed to be able to receive water inside, the groove is formed along the edge surface of the fire door, the water expansion body is inserted into the groove along the edge surface, so that it expands when absorbing water and can seal between the door frame and the door, the suction port is formed on one side of the lower part of the fire door so that water can be supplied to the water receiving portion, and the supply hole is connected from the water receiving portion to the water supply hole. A water-expandable body is formed along the groove, and is used to supply the water received in the water receiving portion through the suction port to the water-expandable body. The fireproof door frame of the invention includes a water receiving portion, a groove, a water-expandable body, a suction port and a plurality of supply holes. The water receiving portion is formed to be able to receive water internally. The groove is formed along the edge surface of the fireproof door frame. The water-expandable body is inserted into the groove along the edge surface so that it expands when absorbing water and can seal between the door frame and the door. The suction port is formed on one side of the lower part of the fireproof door frame so that water can be supplied to the water receiving portion. The supply hole is formed along the groove in a manner of penetrating from the water receiving portion to the water-expandable body, and is used to supply the water received in the water receiving portion through the suction port to the water-expandable body.

[0004] The improvements in the above-mentioned prior art are mostly focused on using new materials or new structures to improve the heat resistance of the fire door itself. However, due to the rapid spread of fire at the fire scene, people cannot escape in time in many cases. The smoke and dust generated covers the space where the fire door is located, which will cause certain obstacles to escape. In addition, the high temperature of the smoke and dust can easily cause the internal structure of the fire door to deform or be damaged. There are still certain problems in actual use. Summary of the invention

[0005] The purpose of the present invention is to provide a fire door and an automatic cooling method thereof, so as to solve the problem raised in the above background technology that due to the rapid spread of fire at the fire scene, people cannot escape in time in many cases, the smoke and dust generated covers the space where the fire door is located, causing certain obstacles to escape, and the internal structure of the fire door is easily deformed or damaged due to the high temperature of the smoke and dust.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fireproof door, comprising a door leaf and a pipe end arranged on the surface of the door leaf for absorbing smoke, wherein the pipe end is distributed in the front and upper half areas of the back of the door leaf, the pipe end on the smoke-free side inhales air for mixing and reducing the temperature of the smoke inhaled by the pipe end on the smoke-containing side, and at the same time, the input end of the pipe end extends out of the through hole opened on the door leaf, and the pipe end is installed on a vertical plate, wherein the vertical plate covering the through hole is driven by a lifting mechanism installed in the door leaf, driving the pipe end to move up and down in the door leaf.

[0007] Furthermore, the door leaf also includes a cooling mechanism, which includes a water tank arranged inside the door leaf and pipes for supplying and discharging water to the water tank, wherein the water in the water tank is connected to the building water supply system and is in a flowing state during a fire.

[0008] Furthermore, the water tank is provided with a flue pipe which is distributed in a winding manner and has its bottom end below the water surface, and the top end of the flue pipe is connected to a horizontal pipe, wherein both ends of the horizontal pipe are respectively connected to the internal space of two vertical plates, and the internal space of the vertical plates is also used to connect the pipe ends.

[0009] As a further feature, a discharge pipe is connected above the liquid level of the water tank, wherein the discharge pipe is used to discharge the airflow after humidification and cooling.

[0010] As a further feature, the middle section of the smoke pipe is obliquely connected to an air duct, and the input end of the air duct is connected to an air supply mechanism, and the air supply mechanism and the lifting mechanism have the same power source.

[0011] Furthermore, the lifting mechanism includes a vertical rod and a motor for driving the vertical rod to rotate, both of which are installed inside the door leaf, wherein the reciprocating threaded section at the top of the vertical rod is threadedly connected to a bracket slidably installed inside the door leaf, and the bracket is used to connect to the vertical plate.

[0012] Furthermore, the air supply mechanism includes a vertical rod and a motor for driving the vertical rod to rotate, both of which are installed inside the door leaf, and fan blades are also installed on the vertical rod, which are located inside the air box, and the output end of the air box is connected to the air duct.

[0013] Furthermore, the lower half of the door leaf is also provided with a sleeve, in which a nozzle is rotatably installed. The nozzle is rotatably connected to a pipeline for supplying fluid, and the sleeve is provided with an opening for directing the fluid sprayed by the nozzle installed on the nozzle to the smoke and dust space.

[0014] As a further feature, a paddle is installed at the rear end of the sleeve, and the internal space where the paddle is located is connected to an exhaust pipe for exhausting purified smoke, and the space is also connected to a smoke exhaust pipeline of the building.

[0015] An automatic cooling method for a fire door, the cooling method comprising the following contents: Smoke and dust cooling: When a fire occurs on either side and smoke and dust are generated, the two sides of the pipe ends will be started at the same time to perform the suction operation. The airflow sucked in from the two sides of the pipe ends will be gathered together, so that the low-temperature air in the space where no fire occurs on one side can be used to mix the high-temperature airflow mixed with smoke and dust, thereby effectively cooling the smoke and dust. The air supply mechanism blows high-pressure airflow into the interior of the air duct, and the airflow is tilted to blow toward the smoke pipe connected to it. At this time, the top of the smoke pipe is in a negative pressure state, so the inside of the vertical plate connected to the smoke pipe will also be in a negative pressure state, and the smoke and air mixture will enter the smoke pipe through the horizontal pipe and be discharged into the water tank. First, the heat will be absorbed by the flowing water, and secondly, the smoke and dust will be taken away by the flowing water during the upward floating of the airflow. Therefore, after this process, the smoke can be relatively properly cooled and purified; Door cooling: The water in the water tank is in a flowing state under the control of the building water pipeline system. In the event of a fire, the water tank distributed in the door leaf will absorb heat through the water flow to avoid the overall temperature of the door leaf from being too high to a certain extent; Local auxiliary cooling of smoke and dust space: During the rotation of the nozzle, the sprayed water will be thrown into the smoke and dust space at a higher height and a larger range along the rotation direction, thereby providing corresponding auxiliary temperature and humidity space for personnel to crawl out in extreme situations.

[0016] The beneficial effects of the present invention are as follows: the fire door and the automatic cooling method thereof can comprehensively assist in cooling the fire door itself, smoke and the nearby escape environment, have a wider application range and can achieve a better auxiliary escape effect, as shown in the following content: 1. The vertical plate is combined with the structural design of the front and rear double sets of pipe ends. On the one hand, it can effectively cool down the smoke introduced into the fire space by using the synchronous air suction method of the front and back of the door leaf. On the other hand, it can reduce the use and maintenance costs of sensors and controllers. There is no need to start the negative pressure adsorption device on only one side after sensing a fire, which is more energy-saving and environmentally friendly. At the same time, the vertical plate and the pipe end can be used to move up and down during operation to increase the smoke adsorption range. Furthermore, the water tank is designed to be connected to the building's water pipeline. On the one hand, it can use flowing water and the water tank to effectively conduct heat and cool the entire door leaf. On the other hand, it can further cool and preliminarily purify the smoke by introducing mixed smoke gas into the interior, thereby minimizing the possibility of deformation and damage to the internal structure of the door leaf due to the high temperature of the smoke.

[0017] 2. The motor is used in conjunction with the vertical rod connected to its output end. On the one hand, it can drive the bracket and the vertical plate to move back and forth through the threaded connection at the top of the vertical rod. On the other hand, it can drive the synchronous rotation of the fan blades to generate airflow and achieve the negative pressure guiding effect of smoke. Compared with the main body with similar functions in the prior art, it is more stable.

[0018] 3. The sleeve cooperates with the rotating design of the nozzle. When the nozzle is connected to the water pipeline and produces a spraying effect, the rotatable design of the nozzle is used to perform auxiliary spray cooling and dust removal effects from the bottom active area where smoke and dust are relatively sparse, thereby auxiliary improving the passability near the fire door in extreme environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front structure of the first embodiment of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the middle and back structure; Figure 3 This is a schematic diagram of the internal structure of the door leaf of the present invention; Figure 4 This is a schematic diagram of the cross pipe distribution structure of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the vertical plate of the present invention; Figure 6 This is a schematic diagram of the vertical rod distribution structure of the present invention; Figure 7 This is a schematic diagram of the smoke pipe distribution structure of the present invention; Figure 8 This is a schematic diagram of the front structure of the second embodiment of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the middle and back structure; Fig.10This is a schematic diagram of the nozzle distribution structure of the present invention; Fig.11 It is a schematic diagram of the blade distribution structure of the present invention.

[0020] In the figure: 1. door leaf; 2. pipe end; 3. perforation; 4. vertical plate; 5. horizontal pipe; 6. smoke pipe; 7. water tank; 8. discharge pipe; 9. air duct; 10. air box; 11. fan blade; 12. vertical rod; 13. bracket; 14. nozzle; 15. sleeve; 16. paddle blade. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 11 , the present invention provides the following technical solutions: Embodiment 1: In this embodiment, the problem to be solved is the common phenomenon that the smoke adsorption efficiency of similar fire doors in the prior art is not high, and the smoke cooling efficiency is not high during the smoke adsorption process. The solution is as follows Figure 1-Figure 2 As shown, it includes a door leaf 1 and a pipe end 2 arranged on the surface of the door leaf 1 for absorbing smoke. The pipe end 2 is distributed in the front and upper half areas of the back of the door leaf 1. The smoke-free side pipe end 2 inhales air for mixing and reducing the temperature of smoke inhaled by the smoke side pipe end 2. At the same time, the input end of the pipe end 2 extends out of the through hole 3 opened on the door leaf 1, and the pipe end 2 is installed on the vertical plate 4, wherein the vertical plate 4 covering the through hole 3 is driven by the lifting mechanism installed in the door leaf 1 to drive the pipe end 2 to move up and down in the door leaf 1. Conventional fire doors adopt a single-sided or double-sided single air suction method to enter. The smoke and dust are adsorbed, and the double-sided pipe ends 2 in the present scheme will start the double-sided pipe ends 2 for suction operation at the same time when a fire occurs on either side and smoke is generated. The airflows sucked in from the pipe ends 2 on both sides will be gathered together, so that the low-temperature air in the space where no fire occurs on one side can be used to mix the high-temperature airflow mixed with smoke and dust, thereby effectively cooling the smoke and dust. At the same time, when the suction work is performed, the pipe end 2 will realize the function of sucking away smoke and dust in the process of moving up and down through the drive of the lifting mechanism arranged in the door leaf 1, thereby quickly absorbing and discharging smoke and dust in a larger range.

[0023] In this embodiment, another cooling method is disclosed, that is, cooling the door leaf 1 itself. In the event of a fire, due to the effect of heat conduction, the fire door may be difficult to operate due to excessive temperature or deformation of the mechanism caused by high temperature. In order to avoid this problem, this solution discloses the following method: Figure 3 In the scheme shown, the door leaf 1 also includes a cooling mechanism, which includes a water tank 7 arranged inside the door leaf 1 and pipes for water supply and discharge of the water tank 7, wherein the water in the water tank 7 is connected to the building water supply system and is in a flowing state during a fire. The water in the water tank 7 is in a flowing state under the control of the building water pipeline system. In the event of a fire, the water tank 7 distributed in the door leaf 1 will avoid the overall temperature of the door leaf 1 from being too high to a certain extent by absorbing heat through water flow.

[0024] In this embodiment, a case of further expanding the above solution is disclosed, that is, further cooling the flue gas, such as Figure 4-Figure 7 As shown, a flue pipe 6 is arranged in the water tank 7, which is arranged in a winding manner and has its bottom end below the water surface, and the top end of the flue pipe 6 is connected to the horizontal pipe 5, wherein the two ends of the horizontal pipe 5 are respectively connected to the internal space of the two vertical plates 4, and the internal space of the vertical plates 4 is also used to connect the pipe end 2, and a discharge pipe 8 is connected above the liquid surface of the water tank 7, wherein the discharge pipe 8 is used to discharge the airflow after humidification and cooling, and the middle section of the flue pipe 6 is obliquely connected to the air pipe 9, and the input end of the air pipe 9 is connected to the air supply mechanism, and the air supply mechanism and the lifting mechanism have the same power source, and the air supply mechanism faces the air pipe 9. A high-pressure airflow is blown into the interior of the smoke pipe 6, and the airflow is obliquely blown toward the smoke pipe 6 connected thereto. At this time, the top of the smoke pipe 6 is in a negative pressure state, so the interior of the vertical plate 4 connected to the smoke pipe 6 is also in a negative pressure state, and the smoke and air mixture enters the smoke pipe 6 through the horizontal pipe 5 and is discharged into the water tank 7. First, the heat will be absorbed by the flowing water, and secondly, the smoke will be taken away by the flowing water during the upward floating of the airflow. Therefore, after this process, the smoke can be relatively properly cooled and purified, and the treated smoke will be discharged to the designated position through the exhaust pipe 8.

[0025] The solution disclosed in the following content further discloses the power source of the cooling function in the present application. Different from the traditional means, this embodiment adopts a more energy-saving and environmentally friendly solution with higher stability in sudden and severe situations, such as Figure 3-Figure 6As shown, the lifting mechanism includes a vertical rod 12 and a motor for driving the vertical rod 12 to rotate, both of which are installed inside the door leaf 1, wherein the reciprocating threaded section at the top of the vertical rod 12 is threadedly connected to a bracket 13 slidably installed inside the door leaf 1, and the bracket 13 is used to be connected to the vertical plate 4, the air supply mechanism includes a vertical rod 12 and a motor for driving the vertical rod 12 to rotate, both of which are installed inside the door leaf 1, and a fan blade 11 is also installed on the vertical rod 12, the fan blade 11 is located inside the air box 10, and the output end of the air box 10 is connected to the air duct 9, the motor will drive the vertical rod 12 to rotate when running, on the one hand, the vertical rod 12 The rotation will drive the bracket 13 and the vertical plate 4 to reciprocate in the axial direction through the threaded transmission effect between its top end and the bracket 13. Therefore, the vertical plate 4 can drive the pipe end 2 to move up and down while keeping covering the perforation 3, thereby achieving the effect of the above-mentioned technical solution. At the same time, when the vertical rod 12 rotates, it will also drive the fan blades 11 to rotate in the air box 10, and the high-pressure airflow generated will enter the air duct 9, thereby generating airflow to realize the transportation of dust-containing airflow. Because there is no need to use additional complex driving equipment to realize the lifting and lowering and suction of the pipe end 2 respectively, the overall stability is higher in severe situations such as sudden fires.

[0026] Embodiment 2: The solution disclosed in this embodiment is another solution for cooling and dust reduction at the same time. Different from the above, the cooling in this embodiment is to cool the fire space near the fire door. Figure 8-11 As shown, a sleeve 15 is also provided at the lower half of the door leaf 1, in which a nozzle 14 is rotatably installed. The nozzle 14 is rotatably connected to a pipeline for supplying fluid. At the same time, the sleeve 15 is provided with an opening for applying the fluid sprayed by the nozzle installed on the nozzle 14 to the smoke space. A paddle 16 is installed at the tail end of the sleeve 15. At the same time, the internal space where the paddle 16 is located is connected to an exhaust pipe 8 for discharging purified smoke, and the space is also connected to the building smoke exhaust pipeline. The purified smoke enters the internal space where the paddle 16 is located through the exhaust pipe 8, so that the paddle 16 drives the nozzle 14 to rotate inside the sleeve 15. At the same time, since the nozzle 14 is connected to a pipeline for supplying water flow or air flow, water flow is preferred here. Therefore, during the rotation of the nozzle 14, the sprayed water flow will be thrown into the smoke space at a higher height and a larger range along the rotation direction, thereby providing a corresponding auxiliary temperature and humidity space for the crawling escape of personnel in extreme cases.

[0027] The automatic cooling method obtained based on the above content, specifically the cooling method for fire doors, includes the following contents: Smoke and dust cooling: When a fire occurs on either side and smoke and dust are generated, the two-sided pipe ends 2 will start the suction operation at the same time. The airflow sucked in from the two side pipe ends 2 will be gathered together, so that the low-temperature air in the space without fire on one side can be used to mix the high-temperature airflow mixed with smoke and dust, so as to effectively cool the smoke and dust. The air supply mechanism blows high-pressure airflow toward the inside of the air duct 9, and the airflow is tilted to blow toward the smoke pipe 6 connected thereto. At this time, the top of the smoke pipe 6 is in a negative pressure state, so the inside of the vertical plate 4 connected to the smoke pipe 6 will also be in a negative pressure state, and the smoke and air mixture will enter the smoke pipe 6 through the horizontal pipe 5 and be discharged into the water tank 7. First, the heat will be absorbed by the flowing water, and secondly, the smoke and dust will be taken away by the flowing water during the upward floating of the airflow. Therefore, after this process, the smoke can be relatively properly cooled and purified. Door cooling: The water in the water tank 7 is in a flowing state under the control of the building water pipeline system. In the event of a fire, the water tank 7 distributed in the door leaf 1 will absorb heat through the water flow to avoid the overall temperature of the door leaf 1 from being too high to a certain extent; Local auxiliary cooling of the smoke and dust space: During the rotation of the nozzle 14, the sprayed water flow will be thrown into the smoke and dust space at a higher height and a larger range along the rotation direction, thereby providing a corresponding auxiliary temperature and humidity space for personnel to crawl and escape in extreme situations.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire door, comprising a door leaf (1) and a pipe end (2) arranged on the surface of the door leaf (1) for absorbing smoke, characterized in that: The pipe ends (2) are distributed in the front and rear upper half areas of the door leaf (1); the air inhaled by the pipe end (2) on the non-smoking side is mixed with the air to reduce the temperature of the smoke inhaled by the pipe end (2) on the smoking side; at the same time, the input end of the pipe end (2) extends out of the through hole (3) provided on the door leaf (1); and the pipe end (2) is installed on a vertical plate (4); wherein the vertical plate (4) covering the through hole (3) is driven by a lifting mechanism installed in the door leaf (1), driving the pipe end (2) to move up and down in the door leaf (1); The door leaf (1) also includes a cooling mechanism, which includes a water tank (7) arranged inside the door leaf (1) and pipes for supplying and discharging water to and from the water tank (7), wherein the water in the water tank (7) is connected to the building water supply system and is in a flowing state during a fire.

2. A fire door according to claim 1, characterized in that: The water tank (7) is provided with a smoke pipe (6) which is arranged in a meandering manner and has its bottom end located below the water surface, and the top end of the smoke pipe (6) is connected to the horizontal pipe (5), wherein the two ends of the horizontal pipe (5) are respectively connected to the internal spaces of the two vertical plates (4), and the internal spaces of the vertical plates (4) are also used to connect the pipe ends (2).

3. A fire door according to claim 2, characterized in that: A discharge pipe (8) is connected above the liquid level of the water tank (7), wherein the discharge pipe (8) is used to discharge the airflow after humidification and cooling.

4. A fire door according to claim 3, characterized in that: The middle section of the smoke pipe (6) is connected to an air pipe (9) at an angle, and the input end of the air pipe (9) is connected to an air supply mechanism, and the air supply mechanism and the lifting mechanism have the same power source.

5. A fire door according to claim 4, characterized in that: The lifting mechanism comprises a vertical rod (12) and a motor for driving the vertical rod (12) to rotate, both of which are installed inside the door leaf (1), wherein the reciprocating threaded section at the top of the vertical rod (12) is threadedly connected to a bracket (13) slidably installed inside the door leaf (1), and the bracket (13) is used to connect to the vertical plate (4).

6. A fire door according to claim 4, characterized in that: The air supply mechanism comprises a vertical rod (12) and a motor for driving the vertical rod (12) to rotate, both of which are mounted inside the door leaf (1), and a fan blade (11) is also mounted on the vertical rod (12), the fan blade (11) is located inside the air box (10), and the output end of the air box (10) is connected to the air duct (9).

7. A fire door according to any one of claims 1 to 6, characterized in that: The lower half of the door leaf (1) is further provided with a sleeve (15), in which a nozzle (14) is rotatably mounted. The nozzle (14) is rotatably connected to a pipeline for supplying fluid, and the sleeve (15) is provided with an opening for directing fluid sprayed from a nozzle mounted on the nozzle (14) to act on the smoke and dust space.

8. A fire door according to claim 7, characterized in that: A paddle (16) is installed at the rear end of the sleeve (15), and the internal space where the paddle (16) is located is connected to an exhaust pipe (8) for exhausting purified smoke, and the space is also connected to a smoke exhaust pipeline of the building.

9. An automatic cooling method for a fire door, characterized in that: The cooling method comprises the following contents: Smoke and dust cooling: When a fire occurs on either side and smoke and dust are generated, the two-sided pipe ends (2) are simultaneously started to perform an air suction operation. The airflow sucked in from the two side pipe ends (2) will be gathered together, so that the low-temperature air in the space where no fire occurs on one side can be used to mix the high-temperature airflow mixed with smoke and dust, thereby effectively cooling the smoke and dust. The air supply mechanism blows a high-pressure airflow toward the inside of the air duct (9), and the airflow is tilted and blown toward the smoke pipe (6) connected thereto. At this time, the top of the smoke pipe (6) is in a negative pressure state, so the inside of the vertical plate (4) connected to the smoke pipe (6) is also in a negative pressure state, and the smoke and dust and air mixture enters the smoke pipe (6) through the horizontal pipe (5) and is discharged into the water tank (7). First, the heat will be absorbed by the flowing water, and secondly, the smoke and dust will be carried away by the flowing water during the upward flow of the airflow. Therefore, after this process, the smoke can be relatively properly cooled and purified. Door cooling: The water in the water tank (7) is in a flowing state under the control of the building water pipeline system. In the event of a fire, the water tank (7) distributed in the door leaf (1) will absorb heat through the water flow to a certain extent to prevent the overall temperature of the door leaf (1) from being too high; Local auxiliary cooling of the smoke and dust space: During the rotation of the nozzle (14), the sprayed water flow will be thrown into the smoke and dust space at a higher height and a larger range along the rotation direction, thereby providing a corresponding auxiliary temperature and humidity space for personnel to crawl and escape in extreme situations.

Images