A fire door and its automatic cooling method

Abstract

The present invention discloses a fire door and an automatic temperature reduction method thereof, belonging to the technical field of fire doors, including a door leaf and a pipe end arranged on the surface of the door leaf for absorbing smoke. The pipe ends are distributed in the upper half area of the front and back surfaces of the door leaf. The pipe end on the smoke-free side inhales air to mix and reduce the temperature of the smoke and dust inhaled by the pipe end on the smoky side. At the same time, the input end of the pipe end extends out of the perforation opened on the door leaf, and the pipe end is installed on a vertical plate. The vertical plate covering the perforation 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. The fire door and the automatic temperature reduction method thereof can comprehensively assist in cooling the fire door itself, the smoke, and the nearby escape environment, with a wider application range and a better auxiliary escape effect.

Description

Technical Field

[0001] The present invention relates to the technical field of fire doors, specifically to doors, windows or similar closures for special purposes, and more specifically to a fire door and its automatic cooling method. Background Art

[0002] A fire door is a door structure used to separate the building activity area from the access area. Since people's work and life are mainly concentrated in the activity area, fires in buildings generally occur in the activity area. A fire door can effectively prevent the spread of fire through the access area in the initial stage. For example, a fire door disclosed in the prior art with the publication number CN104487645B includes a core, a first decorative panel, and a second decorative panel. The core includes: (a) a fire-resistant center board having a bottom, a top, a first side, a second side, a first end, and a second end, where the fire-resistant center board is made of a first fire-resistant material, and (b) an extruded fire-resistant frame attached to the first side, second side, first end, and second end of the fire-resistant center board, where the extruded fire-resistant frame is made of a second fire-resistant material with a higher density than the first fire-resistant material. The first decorative panel is attached to the top of the fire-resistant center board and the extruded fire-resistant frame, and the second decorative panel is attached to the bottom of the fire-resistant center board and the extruded fire-resistant frame.

[0003] Another example is a fire door and a fire door frame disclosed in the prior art with the publication number CN102713124B. More specifically, it relates to a fire door and a fire door frame that can prevent hot air by flowing water inside during a fire and prevent toxic gases from flowing into the room by sealing the gap between the door frame and the door. The fire door of this invention includes a water storage part, a groove, a water swelling body, a suction port, and a supply hole. The water storage part is formed to be able to store water inside. The groove is formed along the edge surface of the fire door. The water swelling body is inserted into the groove along the edge surface to expand when absorbing moisture and seal the gap between the door frame and the door. The suction port is formed on one side of the lower part of the fire door to supply water to the water storage part. The supply hole is formed along the groove in a way that penetrates from the water storage part to the water swelling body, and is used to supply the water stored in the water storage part through the suction port to the water swelling body. The fire door frame of this invention includes a water storage part, a groove, a water swelling body, a suction port, and a plurality of supply holes. The water storage part is formed to be able to store water inside. The groove is formed along the edge surface of the fire door frame. The water swelling body is inserted into the groove along the edge surface to expand when absorbing moisture and seal the gap between the door frame and the door. The suction port is formed on one side of the lower part of the fire door frame to supply water to the water storage part. The supply hole is formed along the groove in a way that penetrates from the water storage part to the water swelling body, and is used to supply the water stored in the water storage part through the suction port to the water swelling body.

[0004] The improvements of the above-mentioned existing technologies mainly focus 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 in the fire scene, in many cases, people cannot escape in time. The smoke and dust generated cover the space where the fire door is located, which will cause certain obstacles to escape. Moreover, affected by the high temperature of the smoke and dust, the internal mechanism of the fire door is likely to deform or be damaged, and 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 its automatic cooling method to solve the problems mentioned in the above background technology, that is, due to the rapid spread of fire in the fire scene, in many cases, people cannot escape in time. The smoke and dust generated cover the space where the fire door is located, which will cause certain obstacles to escape. Moreover, affected by the high temperature of the smoke and dust, the internal mechanism of the fire door is likely to deform or be damaged.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A fire door includes a door leaf and pipe ends arranged on the surface of the door leaf for absorbing smoke. The pipe ends are distributed on the front and upper half of the back of the door leaf. The pipe ends on the smoke-free side inhale air to mix and reduce the temperature of the smoke and dust inhaled by the pipe ends on the smoky side. At the same time, the input end of the pipe end extends out of the perforation opened on the door leaf, and the pipe end is installed on the vertical plate. The vertical plate covering the perforation 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.

[0007] Furthermore, a cooling mechanism is also included in the door leaf. The cooling mechanism includes a water tank arranged inside the door leaf and pipes for the water supply and drainage of the water tank. 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, a smoke pipe is arranged in the water tank in a meandering distribution, and the bottom end of the smoke pipe is located below the water surface. The top end of the smoke pipe is connected to a horizontal pipe. The two ends of the horizontal pipe are respectively connected to the internal spaces of two vertical plates, and the internal spaces of the vertical plates are also used to connect the pipe ends.

[0009] Furthermore, a discharge pipe is connected above the liquid level of the water tank, and the discharge pipe is used to discharge the humidified and cooled air flow.

[0010] Furthermore, an air pipe is obliquely connected to the middle section of the smoke pipe. The input end of the air pipe is connected to a gas supply mechanism, and the gas supply mechanism and the lifting mechanism are of the same power source.

[0011] Furthermore, the lifting mechanism includes a vertical rod and a motor for driving the vertical rod to rotate. Both are installed inside the door leaf. The reciprocating threaded section at the top end 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] As a further improvement, 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. A fan blade is also installed on the vertical rod, and the fan blade is located inside the air box. At the same time, the output end of the air box is communicated with the air duct.

[0013] As a further improvement, a sleeve is also provided at the lower half of the door leaf. A spray pipe is rotatably installed in the sleeve. The spray pipe is rotatably communicated with a pipe for supplying fluid. At the same time, the sleeve is provided with an opening for applying the fluid sprayed by the spray head installed on the spray pipe to the smoke space.

[0014] As a further improvement, a paddle is installed at the tail end of the sleeve. At the same time, the internal space where the paddle is located is communicated with an exhaust pipe for discharging the purified flue gas, and this space is also communicated with the building smoke exhaust pipeline.

[0015] An automatic cooling method for a fire door, the cooling method includes the following contents:

[0016] Smoke and dust cooling: When a fire breaks out on either side and generates smoke and dust, the pipe ends on both sides will be simultaneously activated to perform the air suction operation. The air flows inhaled from the pipe ends on both sides will converge together, so that the low-temperature air in the space where no fire has occurred on one side can be used to mix with the high-temperature airflow containing smoke and dust, thereby effectively cooling the smoke and dust. The air supply mechanism blows high-pressure air into the interior of the air duct, and this air flow blows obliquely towards the smoke pipe connected to it. At this time, the top end of the smoke pipe is in a negative pressure state, so the interior of the vertical plate connected to the smoke pipe will also be in a negative pressure state. And through the horizontal pipe, the mixture of smoke and dust and air enters the smoke pipe and is discharged into the water tank. First, the heat will be absorbed by the flowing water, and secondly, the smoke and dust will also be carried away by the flowing water during the upward floating of the air flow. Therefore, after this process, the flue gas can be relatively properly cooled and purified;

[0017] Door cooling: The water in the water tank is in a flowing state under the control of the building water pipeline system. In case of a fire, the water tanks 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;

[0018] Local auxiliary cooling of the smoke space: During the rotation of the spray pipe, the sprayed water flow will be sprinkled into the smoke space at a higher height and a larger range along the rotation direction, so as to provide a corresponding auxiliary temperature and humidity space for the crawling escape of personnel in extreme cases.

[0019] The beneficial effects of the present invention are: The fire door and its automatic cooling method can comprehensively assist in cooling the fire door itself, the flue gas, and the nearby escape environment, with a wider application range and a better auxiliary escape effect. Specifically, it is as shown in the following content:

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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

[0024] Figure 1 This is a schematic diagram of the front structure of the first embodiment of the present invention;

[0025] Figure 2 For the present invention Figure 1 Schematic diagram of the middle and back structure;

[0026] Figure 3 This is a schematic diagram of the internal structure of the door leaf of the present invention;

[0027] Figure 4 This is a schematic diagram of the cross pipe distribution structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the vertical plate of the present invention;

[0029] Figure 6 This is a schematic diagram of the vertical rod distribution structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the smoke pipe distribution structure of the present invention;

[0031] Figure 8 It is a front structure schematic diagram of the second embodiment of the present invention;

[0032] Figure 9 For the present invention Figure 8 is a rear structure schematic diagram;

[0033] Figure 10 is a nozzle distribution structure schematic diagram of the present invention;

[0034] Figure 11 is a blade distribution structure schematic diagram of the present invention.

[0035] 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, blade. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1-11 , the present invention provides the following technical solutions:

[0038] Embodiment 1: In this embodiment, the problem to be solved is the phenomenon that the smoke adsorption efficiency of the same type of fire doors in the prior art is not high, and at the same time, the cooling efficiency of the flue gas itself is not high during the process of adsorbing flue gas, and the solution means is as Figures 1-2As 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 ends 2 are distributed in the front and the upper half of the back of the door leaf 1. The pipe ends 2 on the smoke-free side inhale air to mix and reduce the temperature of the smoke and dust inhaled by the pipe ends 2 on the smoky side. At the same time, the input end of the pipe end 2 extends out of the perforation 3 opened on the door leaf 1, and the pipe end 2 is installed on the vertical plate 4. The vertical plate 4 covering the perforation 3 is driven by a 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 will adopt a single-suction method on one side or both sides for smoke and dust adsorption. In this solution, when a fire occurs on either side and generates smoke and dust, the pipe ends 2 on both sides will be started simultaneously for suction operations. The airflows inhaled by the pipe ends 2 on both sides will converge together, so that the low-temperature air in the space where no fire has occurred on one side can be used to mix with the high-temperature airflow mixed with smoke and dust, thereby effectively cooling the smoke and dust. At the same time, when performing the suction operation, driven by the lifting mechanism installed in the door leaf 1, the pipe end 2 will realize the function of sucking smoke and dust during the up and down movement, so as to quickly absorb and discharge the smoke and dust in a larger range.

[0039] In this embodiment, another cooling method is disclosed, that is, cooling the door leaf 1 itself. Because in the event of a fire, due to the effect of heat conduction, the fire door will be difficult to operate due to excessive temperature or deformation of the mechanism caused by high temperature. To avoid this problem, this solution discloses as Figure 3 shown in the figure. The door leaf 1 also includes a cooling mechanism, which includes a water tank 7 arranged inside the door leaf 1 and pipes for the water supply and drainage of the water tank 7. 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 tanks 7 distributed in the door leaf 1 will absorb heat through the flowing water to avoid the overall temperature of the door leaf 1 being too high to a certain extent.

[0040] In this embodiment, a case of further expanding the above solution is disclosed, that is, further cooling the smoke, as Figures 4-7As shown in the figure, a smoke pipe 6 is arranged in the water tank 7, which is distributed in a winding manner and the bottom end is located below the water surface. The top end of the smoke pipe 6 is connected to a horizontal pipe 5. The two ends of the horizontal pipe 5 are respectively connected to the internal spaces of two vertical plates 4, and the internal spaces of the vertical plates 4 are also used to connect to the pipe ends 2. Above the liquid level of the water tank 7, a discharge pipe 8 is connected. The discharge pipe 8 is used to discharge the humidified and cooled air flow. The middle section of the smoke pipe 6 is inclined and connected to an air pipe 9. The input end of the air pipe 9 is connected to a gas supply mechanism. At the same time, the gas supply mechanism and the lifting mechanism share the same power source. The gas supply mechanism blows high-pressure air into the interior of the air pipe 9, and this air flow blows obliquely towards the connected smoke pipe 6. At this time, the top end of the smoke pipe 6 is in a negative pressure state. Therefore, the interior of the vertical plate 4 connected to the smoke pipe 6 will also be in a negative pressure state. And through the horizontal pipe 5, the dust and air mixture enters the smoke pipe 6 and is discharged into the water tank 7. First, the heat will be absorbed by the flowing water. Second, the dust will also be carried away by the flowing water during the upward floating of the air flow. So after this process, the flue gas can be cooled and purified relatively properly, and the treated flue gas will be discharged to a designated position through the discharge pipe 8.

[0041] The solution disclosed in the following content further discloses the power source for realizing the above cooling function in the present application. Different from traditional means, this embodiment adopts a more energy-saving and environmentally friendly solution with higher stability in case of sudden bad conditions, such as Figures 3-6 As shown in the figure, the lifting mechanism includes a vertical rod 12 and a motor for driving the rotation of the vertical rod 12. Both are installed inside the door leaf 1. The reciprocating threaded section at the top end 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. The gas supply mechanism includes a vertical rod 12 and a motor for driving the rotation of the vertical rod 12. Both are installed inside the door leaf 1. A fan blade 11 is also installed on the vertical rod 12. The fan blade 11 is located inside the air box 10. At the same time, the output end of the air box 10 is connected to the air pipe 9. When the motor operates, it will drive the vertical rod 12 to rotate. On the one hand, the rotation of the vertical rod 12 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, while the vertical plate 4 keeps covering the perforation 3, it can drive the pipe end 2 to reciprocate up and down, thus realizing the effect in the above technical solution. At the same time, when the vertical rod 12 rotates, it will also drive the fan blade 11 to rotate in the air box 10, so that the generated high-pressure air flow will enter the air pipe 9, thus generating an air flow to realize the transportation of the dust-containing air flow. Because there is no need to use additional complex driving equipment to separately realize the lifting and suction of the pipe end 2, the overall stability is higher in case of sudden fire and other bad conditions.

[0042] Embodiment 2: The solution disclosed in this embodiment is another solution for cooling and simultaneously reducing dust. Different from the above content, in this embodiment, the cooling is to cool the fire space near the area where the fire door is located. Specifically, such asFigures 8-11 As shown, a sleeve 15 is further provided at the lower half of the door leaf 1. A spray pipe 14 is rotatably installed in the sleeve 15. The spray pipe 14 is rotatably communicated with a pipe for supplying fluid. At the same time, the sleeve 15 is provided with an opening for applying the fluid sprayed by the spray head installed on the spray pipe 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 communicated with an exhaust pipe 8 for discharging the purified flue gas. Moreover, this space is also communicated with the building smoke exhaust pipeline. The purified flue gas enters the internal space where the paddle 16 is located through the exhaust pipe 8, so as to drive the spray pipe 14 to rotate inside the sleeve 15 through the paddle 16. At the same time, since the spray pipe 14 is communicated with a pipeline for supplying water flow or air flow, water flow is preferably selected here. Therefore, during the rotation of the spray pipe 14, the sprayed water flow will be scattered into the smoke space at a higher height and a larger range along the rotation direction, so as to provide a corresponding auxiliary temperature and humidity space for the crawling escape of personnel in extreme cases.

[0043] The automatic cooling method obtained according to the above content, specifically referring to the cooling method for a fire door, includes the following content:

[0044] Smoke and dust cooling: When a fire occurs on either side and generates smoke and dust, both ends of the double-sided pipe 2 will simultaneously start the suction operation. The air flows inhaled from both ends of the pipe 2 will converge together, so that the low-temperature air in the space where no fire occurs on one side can be used to mix with the high-temperature air flow mixed with smoke and dust, thereby effectively cooling the smoke and dust. The air supply mechanism blows high-pressure air into the interior of the air duct 9, and this air flow blows obliquely towards the smoke pipe 6 connected thereto. At this time, the top end of the smoke pipe 6 is in a negative pressure state. Therefore, the interior of the vertical plate 4 connected to the smoke pipe 6 will also be in a negative pressure state. And through the horizontal pipe 5, the mixture of smoke and dust and air enters the smoke pipe 6 and is discharged into the water tank 7. First, the heat will be absorbed by the flowing water. Secondly, the smoke and dust will also be carried away by the flowing water during the upward floating of the air flow. Therefore, after this process, the flue gas can be relatively properly cooled and purified.

[0045] Door cooling: The water in the water tank 7 is in a flowing state under the control of the building water pipeline system. In case of a fire, the water tanks 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.

[0046] Local auxiliary cooling of the smoke space: During the rotation of the spray pipe 14, the sprayed water flow will be scattered into the smoke space at a higher height and a larger range along the rotation direction, so as to provide a corresponding auxiliary temperature and humidity space for the crawling escape of personnel in extreme cases.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and 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) provided on the surface of the door leaf (1) for absorbing smoke, characterized in that: The pipe ends (2) are distributed on the front and the upper half area of the back of the door leaf (1). The air is inhaled by the pipe ends (2) on the smoke-free side to mix and reduce the temperature of the soot inhaled by the pipe ends (2) on the smoky side. At the same time, the input ends of the pipe ends (2) extend out of the perforations (3) opened on the door leaf (1), and the pipe ends (2) are installed on the vertical plates (4). The vertical plates (4) covering the perforations (3) are driven by a lifting mechanism installed in the door leaf (1) to drive the pipe ends (2) to move up and down in the door leaf (1). A cooling mechanism is further included in the door leaf (1). The cooling mechanism includes a water tank (7) arranged inside the door leaf (1) and pipes for the water supply and drainage of the water tank (7). The water in the water tank (7) is communicated with the building water supply system and is in a flowing state during a fire. A sleeve (15) is further arranged in the lower half of the door leaf (1). A spray pipe (14) is rotatably installed in the sleeve (15). The spray pipe (14) is rotatably communicated with a pipe for supplying fluid. At the same time, the sleeve (15) is provided with an opening for allowing the fluid sprayed by the nozzles installed on the spray pipe (14) to act on the soot 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 communicated with an exhaust pipe (8) for discharging the purified flue gas, and this space is also communicated with the building smoke exhaust pipeline.

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

3. A fire door according to claim 2, characterized in that: An exhaust pipe (8) is communicated above the liquid level of the water tank (7). The exhaust pipe (8) is used to discharge the humidified and cooled air flow.

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

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

6. The fire door according to claim 4, characterized in that: The air supply mechanism includes a vertical rod (12) and a motor for driving the vertical rod (12) to rotate. Both are installed inside the door leaf (1). A fan blade (11) is further installed on the vertical rod (12). The fan blade (11) is located inside an air box (10). At the same time, the output end of the air box (10) is communicated with the air pipe (9).

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