Fireproof door for smoke isolation protection of green building

Abstract

The invention relates to the technical field of fireproof doors, and particularly discloses a green building smoke isolation protection fireproof door which comprises a building main body and a door body connected to the building main body through a shaft, the building main body is provided with a stepped door frame, the door body is provided with a mounting cavity, and the interior of the mounting cavity is connected with a sealing plate through a pressurizing mechanism; the pressurizing mechanism is used for increasing the extrusion force of the sealing plate on the stepped door frame, a stepped sealing strip is arranged on the side, back on to the mounting cavity, of the sealing plate, a rubber sealing strip is arranged on the stepped sealing strip, and a limiting strip is arranged on the side, facing the mounting cavity, of the sealing plate. A limiting groove corresponding to the limiting strip is formed in the side, facing the sealing plate, of the door body. According to the fireproof door, dense smoke on one side of the door body can be dredged, the situation that the dense smoke is gathered to affect follow-up rescue of firefighters is avoided, the smoke isolation effect can be improved along with temperature rise of one side of the door body, and therefore it can be guaranteed that the dense smoke cannot overflow from the gap between the stepped sealing strip and the stepped door frame.

Description

Technical Field

[0001] This invention relates to the field of fire door technology, specifically to a fire door for smoke protection in green buildings. Background Technology

[0002] With the continuous promotion and application of green building and building energy-saving technologies, fire doors, as an important component of building fire compartmentation and safe evacuation systems, have been widely used and developed. The green building concept emphasizes energy saving, environmental protection, comfort and safety of buildings throughout their entire life cycle. While meeting the corresponding fire resistance limits, fire prevention and smoke isolation and other fire safety performance requirements, fire doors are also gradually developing towards energy saving and environmental protection, sealing and heat insulation, low emissions and lightweight. While improving the fire safety level of buildings, they also help achieve the goal of building energy saving, which is in line with the overall design requirements of green buildings. Existing green building fire doors, such as the one disclosed in CN216043414U, are smoke-proof fire doors. They are equipped with a first gap-blocking plate that extends from the bottom of the fire door body and engages with the inner wall of the bottom of the door frame body. This method fills and covers the gap between the bottom of the fire door body and the door frame body. By pulling down and fixing the second gap-blocking plate, the gap between the top of the fire door body and the door frame body is covered, thereby preventing smoke from seeping out from the top of the fire door body. While the aforementioned existing technologies can prevent the spread of dense smoke, they cannot effectively channel the dense smoke generated by a fire, resulting in a smoke-filled environment behind the fire door, which will hinder subsequent rescue efforts by firefighters. In addition, although the aforementioned existing technologies can isolate dense smoke, they cannot guarantee that the gap between the fire door and the door frame can completely isolate dense smoke in high-temperature environments, which can easily lead to poor smoke isolation performance. Therefore, a green building smoke-proof fire door is needed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a fireproof door for smoke protection in green buildings, in order to solve the problem mentioned in the background art that existing smoke-proof fireproof doors for green buildings cannot effectively guide dense smoke and cannot improve the smoke isolation effect during use.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A fireproof door for smoke protection in green buildings includes a building body and a door body axially connected thereto. The building body has a stepped door frame, and the door body has an installation cavity. A pressure-applying mechanism is connected to a sealing plate within the installation cavity. The pressure-applying mechanism is used to increase the squeezing force of the sealing plate on the stepped door frame. A stepped sealing strip is provided on the side of the sealing plate facing away from the installation cavity, and a rubber sealing strip is provided on the stepped sealing strip. A limit strip is provided on the side of the sealing plate facing the installation cavity, and a limit groove corresponding to the limit strip is provided on the side of the door body facing the sealing plate. The limit strip is slidably engaged within the limit groove. The structure formed by the stepped sealing strip, the rubber sealing strip, and the sealing plate corresponds to the stepped door frame. A smoke exhaust mechanism is provided on the door body, and the smoke exhaust mechanism is used to actively exhaust smoke to the outdoor environment. The smoke exhaust mechanism includes a smoke exhaust pipe connected to the door body.

[0005] Preferably, the shape and size of the inner side of the stepped door frame match the shape and size of the sealing plate on the inner side of the stepped sealing strip, so that the stepped door frame can be sealed by the cooperation of the stepped sealing strip and the stepped structure on the stepped door frame, and the smoke can be prevented from overflowing from the gap between the stepped door frame and the sealing plate.

[0006] Preferably, the pressurizing mechanism includes a support member fixedly connected to the center position inside the mounting cavity, and a connecting block is provided on the inner side of the support member. A lever is connected to the inside of the mounting cavity through a bearing seat, and four assemblies consisting of levers and bearing seats are symmetrically arranged inside the mounting cavity. One end of the lever is axially connected to the connecting block, and the other end of the connecting block is axially connected to a protrusion on the symmetrical side of the sealing plate. The ratio of the distances from the two ends of the lever to the connecting block and the protrusion on the sealing plate is not less than 3.

[0007] Preferably, the pressurizing mechanism further includes a heat-conducting pipe coaxially fixedly connected to the connecting block, and the heat-conducting pipe is seamlessly slidably connected through the support member. The support member is seamlessly slidably connected to the inner side of the opening end facing the sealing plate, and the heat-transfer pipe is fixedly connected through the sealing plate. A memory alloy spring is provided between the support member and the connecting block, and the memory alloy spring is movably sleeved on the outside of the heat-conducting pipe.

[0008] Preferably, the heat pipe and heat transfer pipe are made of copper to quickly transfer heat to the shape memory alloy spring, so as to facilitate the deformation of the shape memory alloy spring.

[0009] Preferably, the part of the exhaust pipe that is directly connected to the door is made of flexible hose to avoid obstructing the rotation of the door. The upper opening of the exhaust pipe is located in the outdoor environment, and the height of the upper opening of the exhaust pipe is higher than the opening height of the heat transfer pipe through the sealing plate.

[0010] Preferably, the smoke exhaust mechanism further includes a smoke collection groove disposed inside the door body, and the door body also has an air passage extending to the outside. One end of the air passage is connected to the smoke collection groove, and the other end of the air passage is connected to the smoke exhaust pipe. The connecting block has a through hole connected to the heat conduction pipe. The smoke collection groove has a hole extending to the mounting cavity, and a telescopic cover is disposed between the hole and the through hole. The two ends of the telescopic cover are respectively sealed and connected to the inner side of the mounting cavity and the side of the connecting block.

[0011] Preferably, the smoke exhaust mechanism further includes a ball-blocking assembly installed on the connecting block, and the ball-blocking assembly is movably extended into the interior of the smoke collection trough.

[0012] Preferably, the ball-blocking assembly consists of a ball and a mounting frame. The ball is disposed inside the smoke collection trough, and the mounting frame consists of a connecting rod and three L-shaped rods fixedly connected at equal angles to one end of the connecting rod. The ball is coaxially fixedly connected to the other end of the connecting rod, and the three L-shaped rods are fixedly installed on the side of the connecting block. The diameter of the connecting rod is smaller than the inner diameter of the heat-conducting pipe coaxial with it, and half of the inner diameter of the heat-conducting pipe is smaller than the maximum vertical distance between the L-shaped rod and the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the fire door for smoke protection in green buildings can not only guide the dense smoke on one side of the door to prevent the accumulation of dense smoke from affecting the subsequent rescue by firefighters, but also improve the smoke-blocking effect as the temperature on one side of the door increases, thereby ensuring that dense smoke does not overflow from the gap between the stepped sealing strip and the stepped door frame. 1. After a fire occurs, the high-temperature smoke comes into contact with the heat transfer pipe. The temperature of the smoke quickly travels along the heat transfer and heat conduction pipes to the shape memory alloy spring. After absorbing heat, the shape memory alloy spring will quickly stretch, which will cause the connecting block to move away from the support. This will allow the sealing plate to be lifted by lever. After the sealing plate is lifted, the distance between the stepped sealing strip and the stepped door frame will be further reduced, which will further compress the rubber sealing strip and improve the sealing performance between the stepped sealing strip and the stepped door frame. In other words, it can improve the smoke isolation effect of the fire door. 2. Because the connecting block is relatively far from the support, the ball-blocking assembly connected to the connecting block can move synchronously. After the ball-blocking assembly moves, it will no longer block the hole connecting the installation cavity and the smoke collection trough. At this time, since the upper end of the exhaust pipe is in the outdoor environment and the height of the upper end of the exhaust pipe is greater than the opening height of the heat transfer pipe on the sealing plate, the chimney effect can be used to allow the dense smoke to pass through the heat transfer pipe, heat conduction pipe, the through hole of the connecting block, the telescopic cover, the smoke collection trough and the hole opened between the installation cavity, the smoke collection trough, the air passage and the exhaust pipe in sequence and be discharged to the outdoor environment. This can greatly reduce the concentration of indoor smoke and facilitate subsequent rescue by firefighters. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the door body of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of point A in the middle; Figure 5 This is a schematic diagram of the connection structure between the door body and the connecting block of the present invention; Figure 6 This is a partial structural diagram of the connection between the door body and the sealing plate of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram of point B; Figure 8 This is a schematic diagram of the connection structure between the exhaust pipe and the smoke collection trough of the present invention.

[0015] In the diagram: 1. Main building structure; 2. Stepped door frame; 3. Door body; 4. Sealing plate; 5. Smoke exhaust pipe; 6. Installation cavity; 7. Support component; 8. Heat conduction pipe; 9. Connecting block; 10. Lever; 11. Memory alloy spring; 12. Telescopic cover; 13. Smoke collection trough; 14. Air duct; 15. Ball blocking assembly; 16. Stepped sealing strip; 17. Rubber sealing strip; 18. Limiting strip; 19. Limiting groove; 20. Heat transfer pipe. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-8 The present invention provides the following technical solution: Example 1: To address the problem of poor sealing performance in traditional green building fire doors, which often results in inadequate smoke isolation, the following technical solution is provided: A fire door for smoke isolation protection in green buildings includes a building body 1 and a door body 3 connected to it. The building body 1 has a stepped door frame 2, and the door body 3 has an installation cavity 6. The installation cavity 6 is connected to a sealing plate 4 via a pressurizing mechanism. The pressurizing mechanism is used to increase the squeezing force of the sealing plate 4 on the stepped door frame 2. A stepped sealing strip 16 is provided on the side of the sealing plate 4 facing away from the installation cavity 6, and a rubber sealing strip 17 is provided on the stepped sealing strip 16. A limiting strip 18 is provided on the side of the sealing plate 4 facing the installation cavity 6, and a limiting groove 19 corresponding to the limiting strip 18 is provided on the side of the door body 3 facing the sealing plate 4. The limiting strip 18 is engaged and slidably connected inside the limiting groove 19. The structure formed by the stepped sealing strip 16, the rubber sealing strip 17, and the sealing plate 4 corresponds to the stepped door frame 2.

[0018] The shape and size of the inner side of the stepped door frame 2 match the shape and size of the sealing plate 4 on the inner side of the stepped sealing strip 16. This allows the stepped door frame 2 to be sealed by the cooperation of the stepped sealing strip 16 and the stepped structure on the stepped door frame 2, preventing flue gas from escaping from the gap between the stepped door frame 2 and the sealing plate 4. The pressurizing mechanism includes a support member 7 fixedly connected to the center position inside the mounting cavity 6, and a connecting block 9 is provided on the inner side of the support member 7. A lever 10 is axially connected to the inside of the mounting cavity 6 via a bearing seat. Four levers 10 and bearing seats are symmetrically arranged within the mounting cavity 6. One end of the lever 10 is axially connected to the connecting block 9, and the other end of the connecting block 9 is axially connected to the sealing plate 4. On the symmetrical side protrusions, the ratio of the distances from both ends of lever 10 to the protrusions on connecting block 9 and sealing plate 4 is not less than 3. The pressurizing mechanism also includes a heat-conducting pipe 8 coaxially fixedly connected to connecting block 9, and the heat-conducting pipe 8 is seamlessly slidably connected through support member 7. A heat transfer pipe 20 is seamlessly slidably connected to the inner side of the opening end of support member 7 facing sealing plate 4, and the heat transfer pipe 20 is fixedly connected through sealing plate 4. A memory alloy spring 11 is provided between support member 7 and connecting block 9, and the memory alloy spring 11 is movably sleeved on the outside of heat-conducting pipe 8. The heat-conducting pipe 8 and heat transfer pipe 20 are made of copper, which is used to quickly transfer heat to memory alloy spring 11 so that memory alloy spring 11 can deform.

[0019] according to Figures 1-7 When in use, the fire door is closed or opened by the handle on the side of the door 3. Locks are installed on the side of the door 3 and the main body of the building 1 to ensure the stable and airtight sealing of the door 3. In the event of a fire, a large amount of high-temperature smoke will be generated on the side of the door 3 where the sealing plate 4 is located. As the smoke flows, it will gradually approach and come into contact with the sealing plate 4. When the high-temperature smoke comes into contact with the heat transfer tube 20 on the sealing plate 4, the high temperature of the smoke will be quickly conducted through the heat transfer tube 20 and the heat conduction tube 8, causing the memory alloy spring 11 to quickly absorb the high temperature of the smoke and elongate, thereby causing the connecting block 9 to move away from the support member 7. During the above process, relative movement will occur between the heat conduction pipe 8 and the heat transfer pipe 20. Since the gap between the two is between 0.001 and 0.003 mm, the leakage of dense smoke from the gap between the heat conduction pipe 8 and the heat transfer pipe 20 is avoided as much as possible. When the connecting block 9 moves away from the support member 7, it will drive the lever 10 connected to the connecting block 9 to rotate, thereby causing the sealing plate 4 to gradually rise, so that the stepped sealing strip 16 on the sealing plate 4 and the stepped door frame 2 are squeezed more tightly by the rubber sealing strip 17. The stepped sealing structure formed by the stepped sealing strip 16, the stepped door frame 2, and multiple rubber sealing strips 17 can prevent dense smoke from overflowing from the gap between the stepped sealing strip 16 and the stepped door frame 2, which can prevent dense smoke from flowing to the other side of the fire door and help protect the personnel on the other side of the fire door. During the above process, due to the structure formed by the lever 10 and the bearing seat, the kinetic energy required to lift the sealing plate 4 can be greatly reduced. As a result, the compressive force generated by the memory alloy spring 11 on the connecting block 9 after being heated is sufficient to lift the sealing plate 4, thereby ensuring the stable operation of the above process.

[0020] Example 2: To address the problem that traditional green building fire doors can only isolate smoke but not vent it, leading to smoke accumulation on the side of the fire door where a fire occurs, hindering subsequent rescue efforts by firefighters, the following technical solution is provided: Specifically, a smoke exhaust mechanism is installed on the door body 3 to actively exhaust smoke to the outdoor environment. The smoke exhaust mechanism includes a smoke exhaust pipe 5 connected to the door body 3. The part of the smoke exhaust pipe 5 directly connected to the door body 3 is made of flexible material to avoid obstructing the rotation of the door body 3. The upper opening of the smoke exhaust pipe 5 is located in the outdoor environment, and the height of the upper opening of the smoke exhaust pipe 5 is higher than the opening height of the heat transfer pipe 20 penetrating the sealing plate 4.

[0021] The smoke exhaust mechanism also includes a smoke collection trough 13 disposed inside the door body 3, and an air passage 14 extending to the outside of the door body 3. One end of the air passage 14 is connected to the smoke collection trough 13, and the other end of the air passage 14 is connected to the smoke exhaust pipe 5. A through hole is provided on the connecting block 9 to connect to the heat conduction pipe 8. A hole is provided on the smoke collection trough 13 to extend to the mounting cavity 6, and a telescopic cover 12 is provided between the hole and the through hole. The two ends of the telescopic cover 12 are respectively sealed to the inner side of the mounting cavity 6 and the side of the connecting block 9. The smoke exhaust mechanism also includes a pipe installed on the connecting block 9. The ball-blocking assembly 15 on block 9 extends movably into the interior of the smoke collection trough 13. The ball-blocking assembly 15 consists of a ball and a mounting frame. The ball is located inside the smoke collection trough 13, and the mounting frame consists of a connecting rod and three L-shaped rods fixedly connected at equal angles to one end of the connecting rod. The ball is coaxially fixedly connected to the other end of the connecting rod, and the three L-shaped rods are fixedly installed on the side of the connecting block 9. The diameter of the connecting rod is smaller than the inner diameter of the heat-conducting pipe 8 coaxial with it, and half of the inner diameter of the heat-conducting pipe 8 is smaller than the maximum vertical distance between the L-shaped rods and the connecting rod.

[0022] according to Figure 4 and Figure 8 When in use, because the connecting block 9 moves relative to the support member 7, the ball-blocking assembly 15 connected to the connecting block 9 can move synchronously. After the ball-blocking assembly 15 is moved, the ball on it will no longer block the through hole between the installation cavity 6 and the smoke collection groove 13; At this time, since the upper end of the smoke exhaust pipe 5 is located outdoors, and the height of the upper end of the smoke exhaust pipe 5 is greater than the opening of the heat transfer pipe 20 on the sealing plate 4, the chimney effect can be used to make the dense smoke on the side of the fire door where the fire occurs flow quickly through the heat transfer pipe 20, the heat conduction pipe 8, the through hole on the connecting block 9 and the telescopic cover 12, and enter the smoke collection trough 13 through the hole between the smoke collection trough 13 and the installation cavity 6; Subsequently, the dense smoke is discharged outdoors from the smoke collection trough 13 through the air duct 14 and the smoke exhaust pipe 5. By automatically guiding the dense smoke, the concentration of dense smoke on the side of the fire door where the fire occurred can be greatly reduced, thereby greatly reducing the difficulty of subsequent rescue by firefighters.

[0023] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fireproof door for smoke protection in green buildings, comprising a building body (1) and a door body (3) connected thereto by a shaft, characterized in that: The building body (1) has a stepped door frame (2), and the door body (3) has an installation cavity (6). The installation cavity (6) is connected to the sealing plate (4) through a pressure mechanism. The pressure mechanism is used to increase the squeezing force of the sealing plate (4) on the stepped door frame (2). The sealing plate (4) has a stepped sealing strip (16) on the side facing away from the installation cavity (6), and a rubber sealing strip (17) is provided on the stepped sealing strip (16). The sealing plate (4) has a limit strip on the side facing the installation cavity (6). 18), and the door body (3) is provided with a limiting groove (19) corresponding to the limiting strip (18) on the side facing the sealing plate (4), and the limiting strip (18) is engaged and slidably connected to the inside of the limiting groove (19). The structure formed by the stepped sealing strip (16), the rubber sealing strip (17) and the sealing plate (4) is provided in correspondence with the stepped door frame (2). The door body (3) is provided with a smoke exhaust mechanism, and the smoke exhaust mechanism is used to actively exhaust the smoke to the outdoor environment. The smoke exhaust mechanism includes a smoke exhaust pipe (5) connected to the door body (3).

2. The fireproof door for smoke protection in green buildings according to claim 1, characterized in that: The shape and size of the inner side of the stepped door frame (2) match the shape and size of the sealing plate (4) on the inner side of the stepped sealing strip (16). Thus, the stepped door frame (2) can be sealed by the cooperation of the stepped sealing strip (16) and the stepped structure on the stepped door frame (2), preventing the flue gas from overflowing from the gap between the stepped door frame (2) and the sealing plate (4).

3. The fireproof door for smoke protection in green buildings according to claim 1, characterized in that: The pressurizing mechanism includes a support member (7) fixedly connected to the center of the mounting cavity (6), and a connecting block (9) is provided on the inner side of the support member (7). A lever (10) is connected to the inside of the mounting cavity (6) through a shaft seat. Four components consisting of the lever (10) and the shaft seat are symmetrically arranged in the mounting cavity (6). One end of the lever (10) is axially connected to the connecting block (9), and the other end of the connecting block (9) is axially connected to the protrusion on the symmetrical side of the sealing plate (4). The ratio of the distances from the two ends of the lever (10) to the connecting block (9) and the protrusion on the sealing plate (4) is not less than 3.

4. A fire door for smoke protection in green buildings according to claim 3, characterized in that: The pressurization mechanism also includes a heat pipe (8) coaxially fixedly connected to the connecting block (9), and the heat pipe (8) is seamlessly slidably connected through the support member (7). The support member (7) is seamlessly slidably connected to the inner side of the opening end facing the sealing plate (4) with a heat transfer pipe (20), and the heat transfer pipe (20) is fixedly connected through the sealing plate (4). A memory alloy spring (11) is provided between the support member (7) and the connecting block (9), and the memory alloy spring (11) is movably sleeved on the outside of the heat pipe (8).

5. A fire door for smoke protection in green buildings according to claim 4, characterized in that: The heat pipe (8) and heat transfer pipe (20) are made of copper and are used to quickly transfer heat to the shape memory alloy spring (11) so that the shape memory alloy spring (11) can deform.

6. A fire door for smoke protection in green buildings according to claim 4, characterized in that: The part of the exhaust pipe (5) that is directly connected to the door (3) is made of flexible material to avoid the exhaust pipe (5) from obstructing the rotation of the door (3). The upper opening of the exhaust pipe (5) is located in the outdoor environment, and the height of the upper opening of the exhaust pipe (5) is higher than the opening height of the heat transfer pipe (20) through the sealing plate (4).

7. A fire door for smoke protection in green buildings according to claim 4, characterized in that: The smoke exhaust mechanism also includes a smoke collection groove (13) inside the door body (3), and the door body (3) is also provided with an air passage (14) that extends to the outside. One end of the air passage (14) is connected to the smoke collection groove (13), and the other end of the air passage (14) is connected to the smoke exhaust pipe (5). The connecting block (9) is provided with a through hole that is connected to the heat conduction pipe (8). The smoke collection groove (13) is provided with a hole that extends to the mounting cavity (6), and a telescopic cover (12) is provided between the hole and the through hole. The two ends of the telescopic cover (12) are respectively sealed and connected to the inner side of the mounting cavity (6) and the side of the connecting block (9).

8. A fire door for smoke protection in green buildings according to claim 7, characterized in that: The smoke exhaust mechanism also includes a ball-blocking assembly (15) installed on the connecting block (9), and the ball-blocking assembly (15) extends into the interior of the smoke collection trough (13).

9. A fire door for smoke protection in green buildings according to claim 8, characterized in that: The ball-blocking assembly (15) consists of a ball-blocking device and an mounting frame. The ball-blocking device is located inside the smoke collection trough (13), and the mounting frame consists of a connecting rod and three L-shaped rods fixedly connected at equal angles to one end of the connecting rod. The ball-blocking device is coaxially fixedly connected to the other end of the connecting rod, and the three L-shaped rods are fixedly installed on the side of the connecting block (9). The diameter of the connecting rod is smaller than the inner diameter of the heat-conducting pipe (8) coaxial with it, and half of the inner diameter of the heat-conducting pipe (8) is smaller than the maximum vertical distance between the L-shaped rod and the connecting rod.

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