Active smoke exhaust emergency evacuation door for gas film and gas film building

Abstract

The utility model relates to an active smoke evacuation emergency evacuation door for gas film and gas film building, including: door body, door frame and door roof, door roof is provided above the door body, the door frame surrounds the whole that the door roof is connected with the door body and is provided outside the whole that the door roof is connected with the door body; an air outlet is formed in the side, close to the indoor space, of the door frame, the air outlet is formed in the position, close to the outer edge of the door frame, of the outline of the door frame, the door top is provided with an air inlet grille and an airflow channel communicating the air inlet grille with the air outlet, and the air inlet grille is arranged on the side, close to the outdoor space, of the door top. The active smoke exhaust emergency evacuation door has the advantages that the active smoke exhaust emergency evacuation door is applied to an air film building, when a fire disaster happens and the emergency evacuation door is opened, external air can be actively sucked, accelerated and then blown into a room through the airflow channel, the accelerated airflow forms uninterrupted airflow along the outer contour of the door frame, and then smoke is taken away.

Description

Technical Field

[0001] This utility model relates to the field of air-supported membrane structures, and in particular to an active smoke exhaust emergency evacuation door for air-supported membrane structures and an air-supported membrane structure. Background Technology

[0002] In existing building safety facilities, emergency evacuation doors, as key safety exits, are widely used in various types of buildings, such as some air-supported structures. The main function of emergency evacuation doors is to provide people with a fast and safe escape route in emergencies, such as in the event of a fire.

[0003] However, in the current design of emergency evacuation doors used in air-supported structures, in emergency situations such as fires, when the emergency evacuation doors are opened for evacuation, if there is a positive pressure inside the building (such as inside the air-supported structure), toxic fire smoke may be discharged along with the airflow due to the positive pressure inside, thus posing a serious health threat to the evacuees and increasing the risk and difficulty of evacuation.

[0004] Given the aforementioned issues, existing emergency evacuation door designs have certain limitations in terms of fire safety performance, failing to effectively protect the safety of evacuees when the doors are open. Therefore, developing an emergency evacuation door that incorporates active smoke extraction capabilities to effectively reduce the spread of toxic fumes during a fire is of great significance for improving building safety and evacuation efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an active smoke exhaust emergency evacuation door and an air-supported membrane structure, which can actively exhaust smoke when the emergency evacuation door is opened, ensuring the safety of personnel evacuation and allowing toxic fumes to be blown away.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an active smoke exhaust emergency evacuation door for air membrane, comprising: a door body, a door frame and a door top, wherein the door top is disposed above the door body, and the door frame surrounds the door top and the door body as a whole and is disposed on the outside of the door top and the door body as a whole.

[0007] An air outlet is provided on the side of the door frame closer to the interior. The air outlet is located along the outline of the door frame and close to the outer edge of the door frame. An air inlet grille and an airflow channel connecting the air inlet grille and the air outlet are provided on the top of the door. The air inlet grille is located on the side of the top of the door closer to the exterior.

[0008] The beneficial effects of this utility model are as follows: Applying an active smoke exhaust emergency evacuation door to an air-supported membrane structure allows for the active intake of outside air when it is opened during a fire. This air is then accelerated and blown into the room through an airflow channel. The accelerated airflow forms a continuous airflow along the outer contour of the door frame, effectively dispersing smoke and preventing toxic fumes from harming personnel. This ensures safe evacuation as smoke does not escape with the evacuees. The air outlet is positioned along the entire contour of the door frame, ensuring that the airflow forms a continuous air barrier along the outer contour, effectively blocking toxic fumes. This emergency evacuation door is applicable to various types of air-supported membrane structures. In emergencies such as fires, it effectively protects personnel safety and reduces property damage, demonstrating broad application prospects.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, a fan is also installed inside the top of the door, and a fan inlet base is installed below the fan. The fan inlet base has evenly spaced base inlets on the circumference, and the fan is connected to the air inlet grille through the fan inlet base.

[0011] The beneficial effects of adopting the above-mentioned further solution are: air is drawn in from the outside through the air inlet grille, and the high-speed rotating impeller on the fan generates a strong airflow, which is guided to the airflow channel and the air outlet to form a continuous and stable airflow.

[0012] Furthermore, multiple air intake grilles are arranged in a fan shape on the side of the door top near the outside, and the multiple air intake grilles are symmetrically arranged about the axis of symmetry of the door top;

[0013] The fan is located in the middle of the top of the door, and a fan housing is provided around the outside of the fan. The fan housing extends from the upper surface of the fan inlet base to communicate with the inside of the door frame.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the air drawn in by the air inlet grille can flow through the fan inlet base to a position near the bottom of the fan. The centrifugal force generated by the rotation of the fan impeller accelerates the drawn-in air and generates a strong airflow.

[0015] Furthermore, the internal connection of the fan housing forms the airflow channel for air circulation. Air drawn in from the air inlet grille is driven upward by the fan through the fan inlet base and moves through the fan housing to the inside of the door frame.

[0016] The beneficial effects of adopting the above-mentioned further solution are: through the rotation of the airflow channel and the fan impeller, air is efficiently drawn in, accelerated and guided to the air outlet, which significantly improves the air circulation efficiency inside the emergency evacuation door.

[0017] Furthermore, the airflow channel is connected to the exhaust section inside the door frame on the side opposite to the fan; the exhaust section has an airfoil shape.

[0018] The cross-sectional dimensions of the exhaust section gradually increase from indoors to outdoors.

[0019] The beneficial effects of adopting the above-mentioned further scheme are as follows: the intake air is accelerated and diffused into the exhaust cross section of the entire door frame, and discharged through the air outlet located on the door frame, resulting in a larger exhaust area. At the same time, the cross-sectional size of the exhaust cross section gradually increases from the inside of the door frame to the outside, which helps to optimize the airflow path and improve exhaust efficiency. The airfoil-shaped exhaust cross section generates negative pressure, inducing the airflow behind to enter the exhaust cross section, further increasing the air volume, thereby obtaining strong wind force, which can more effectively guide the airflow and keep it at a high speed during the exhaust process, thereby enhancing the exhaust capacity and blocking toxic fumes. Combining the exhaust cross section with the outer edge of the door frame cleverly utilizes the interior space of the door frame to form the exhaust cross section.

[0020] Furthermore, the cross-section of the exhaust section is formed by sequentially connecting and integrally forming a first arc segment, a first contraction surface, a second contraction surface, and a second arc segment. The first contraction surface and the second contraction surface are arranged opposite to each other. The end of the first contraction surface away from the first arc segment extends in an inclined direction toward the second contraction surface, then extends in an inclined direction away from the second contraction surface, and finally extends in an inclined direction toward the second contraction surface to connect with the end of the second contraction surface.

[0021] The end face of the second arc segment facing away from the second contraction surface overlaps with the end portion of the first arc segment facing away from the first contraction surface and is spaced apart to form the air outlet, which faces the room.

[0022] The exhaust section with the second contraction surface is located close to the door body on one side, and the exhaust section with the first contraction surface is located away from the door body on the other side.

[0023] The beneficial effects of adopting the above-mentioned further solution are as follows: the door frame and the exhaust section are integrally formed, reducing structural weaknesses caused by splicing seams and significantly improving the overall strength and stability; the air accelerated by the centrifugal fan on the top of the door is discharged into the exhaust sections on both sides of the door and above the top of the door, and is pushed to the narrow air outlet in the exhaust section for discharge. The air discharged at the air outlet, which matches the shape of the door frame outline, forms an airflow barrier that can cover the area around the air outlet, drive away the smoke, and ensure the safety of personnel evacuation; and through the cooperation of the above structure, the aerodynamics is accelerated, which can increase the wind speed by 15 times.

[0024] Furthermore, the top of the door is semi-circular, semi-elliptical, or rectangular.

[0025] The beneficial effect of adopting the above-mentioned further solutions is that they meet the design requirements of emergency evacuation doors used in daily life.

[0026] Furthermore, a push-rod lock is provided on the inner side of the door;

[0027] The door is also equipped with an observation window.

[0028] The beneficial effects of adopting the above-mentioned further solutions are as follows: by installing a push-bar lock on the interior side of the emergency evacuation door to lock the door, in the event of a fire or other emergency, the push-bar lock allows people to quickly open the evacuation door and escape the danger zone; under normal circumstances, the push-bar lock has an anti-theft function and can restrict the passage of unauthorized personnel; the setting of the observation window allows personnel to observe the situation through the observation window, including whether the evacuation passage is unobstructed and whether there are any obstacles, which is helpful for emergency evacuation.

[0029] Furthermore, it also includes a fire alarm device, which is electrically connected to the fan.

[0030] The beneficial effects of adopting the above-mentioned further solution are: the fire alarm device is linked to control the start of the fan for active smoke exhaust. Air is drawn in by the centrifugal fan on the top of the door, accelerated, and then enters the exhaust section of the door frame through the airflow channel, accelerating the exhaust of the air. The accelerated airflow forms an uninterrupted airflow along the outer contour of the door frame and is stabilized within a reasonable wind speed range. This ensures that the wind speed can blow away the indoor smoke, and when personnel evacuate to the location of the emergency evacuation door, the inside of the door has already isolated the smoke, ensuring evacuation safety.

[0031] An air-supported membrane structure is also provided, including: an active smoke exhaust emergency evacuation door for the air-supported membrane as described above.

[0032] The beneficial effects of adopting the above-mentioned further solution are: the emergency evacuation door is linked with the fire alarm. When a fire occurs, the fan is activated in conjunction with the door. Air is drawn in through the centrifugal fan on the top of the door and then enters the exhaust section of the door frame through the airflow channel. The air is accelerated and discharged, thereby blowing away the smoke and ensuring that the smoke can be blown away in time when people are evacuated, and not evacuated with the people. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model. Figure 1 ;

[0034] Figure 2 This is a schematic diagram of the overall structure of one embodiment of the present utility model. Figure 2 ;

[0035] Figure 3 This is a schematic diagram of the internal structure of the door top in one embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the assembly of the fan and the fan inlet base in one embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram showing the position and assembly of the various components inside the door top in one embodiment of the present invention;

[0038] Figure 6 For located Figure 1 A schematic diagram of the exhaust cross-section and air outlet on the left side of the door frame.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1. Door body; 2. Door frame; 3. Door top; 4. Air inlet grille; 5. Air outlet; 6. Airflow channel; 7. Fan; 8. Fan housing; 9. Fan inlet base; 10. Push rod lock; 11. Observation window; 51. First arc segment; 52. First contraction surface; 53. Second contraction surface; 54. Second arc segment. Detailed Implementation

[0041] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0042] Firstly, such as Figure 1-3 As shown, this utility model provides an active smoke exhaust emergency evacuation door for an air-supported membrane structure, comprising: a door body 1, a door frame 2, and a door top 3. The door top 3 is installed above the door body 1, and the door frame 2 surrounds the outer peripheral wall of the integral structure formed by the door body 1 and the door top 3. The door body 1 is installed within the door frame 2 via a door body frame, and the door body 1 and the door body frame are rotatably connected. In some feasible embodiments, the door body 1 and the door frame are rotatably connected via hinges. The door top 3 is installed above the door body frame within the enclosed area of ​​the door frame 2.

[0043] In this embodiment, the top of the door 3 can be designed in a conventional shape, such as a semi-circle, a semi-ellipse, or a rectangle. When it is set as a rectangle, the corners of the rectangle need to be chamfered. Correspondingly, the upper part of the door frame 2 surrounding the outside of the top of the door 3 needs to maintain the same shape as the top of the door 3 to meet the design requirements of emergency evacuation doors used in daily life.

[0044] In this embodiment, an air outlet 5 is provided on the side of the door frame 2 closest to the interior, and the air outlet 5 is arranged along the entire outline of the door frame 2 and close to the outer edge of the door frame 2, that is, the shape of the overall outer outline of the door frame 2 is the same as the shape of the air outlet 5. At the same time, an air inlet grille 4 and an airflow channel 6 connecting the air inlet grille 4 and the air outlet 5 are provided on the top of the door 3. The air inlet grille 4 is located on the side of the top of the door 3 closest to the exterior, that is, the air outlet 5 and the air inlet grille 4 are respectively located on different sides. Specifically, the side of the door body 1 located inside the air membrane is defined as the side of the door body 1 closest to the interior; conversely, the side of the door body 1 located outside the air membrane is defined as the side of the top of the door 3 closest to the exterior.

[0045] Because the air membrane is under positive pressure, when the emergency evacuation door is opened in case of fire, toxic fumes will also be discharged from the door 1 due to the positive pressure, thus causing harm to personnel. Based on this emergency evacuation door, when the emergency evacuation door is opened, the power unit on the top of the door 3 drives the air intake grille 4 to draw in air from the outside, which is accelerated through the airflow channel 6 and discharged through the air outlet 5 and blown into the room, forming an uninterrupted airflow along the outer contour of the door frame 2, thereby blowing away the smoke and blocking the toxic fumes, ensuring the safety of personnel evacuation.

[0046] In the above scheme, the active smoke exhaust emergency evacuation door is applied to the air-supported membrane structure. When the emergency evacuation door is opened in the event of a fire, it actively draws in outside air, accelerates it, and then blows it into the room through the airflow channel 6. The accelerated airflow forms an uninterrupted airflow along the outer contour of the door frame 2, thereby dispersing the smoke and effectively blocking the harmful effects of toxic fumes on personnel. This ensures that the smoke does not escape with the personnel and guarantees the safety of personnel evacuation. The air outlet 5 is set along the entire contour of the door frame 2, ensuring that the airflow can form an uninterrupted air barrier along the outer contour of the door frame 2, so that toxic fumes can be effectively blocked. This emergency evacuation door is applicable to various types of air-supported membrane structures. In emergency situations such as fires, it can effectively protect personnel safety and reduce property damage, and has broad application prospects.

[0047] In a preferred embodiment, a fan 7 is also installed inside the top of the door 3, and a fan inlet base 9 is installed below the fan 7. The fan inlet base 9 has evenly spaced base inlets on its circumference, allowing the fan 7 to connect to the air inlet grille 4 via the fan inlet base 9. In this embodiment, a centrifugal fan can be used. The centrifugal fan has a strong suction capacity, drawing in air from the outside through the air inlet grille 4. The air moves through the base inlets on the fan inlet base 9 to the area below the centrifugal fan. The high-speed rotating impeller on the centrifugal fan generates a strong airflow, which is guided to the airflow channel 6 and the air outlet 5, forming a continuous and stable airflow.

[0048] like Figure 2As shown, the air inlet grille 4 is located on the side of the door top 3 closest to the outside. In this embodiment, multiple air inlet grilles 4 are arranged in a fan shape on the side of the door top 3 closest to the outside, and the multiple air inlet grilles 4 are symmetrically arranged about the vertical axis of symmetry of the door top 3. This allows the air drawn in by the air inlet grille 4 to flow through the fan inlet base 9 to a position near the lower part of the centrifugal fan. The centrifugal force generated by the rotation of the centrifugal fan impeller accelerates the drawn-in air and generates a strong airflow.

[0049] In this embodiment, the fan 7 is located in the middle of the top of the door 3, and a fan housing 8 is provided around the outside of the fan 7. The fan housing 8 extends from the upper end face of the fan inlet base 9 to communicate with the interior of the door frame 2.

[0050] In this embodiment, the fan 7 extends an airflow channel 6 upwards away from the fan 7, forming an airflow channel 6 inside the fan housing 8 for air circulation. When the fan 7 starts, it draws in air from the air inlet grille 4. The air is guided to the bottom of the fan 7 via the fan inlet base 9 and driven upwards by the rotation of its impeller, guiding the air into the airflow channel 6 and then flowing to the air outlet 5. Through the airflow channel 6 and the rotation of the fan impeller, the air is efficiently drawn in, accelerated, and guided to the air outlet 5, significantly improving the air circulation efficiency inside the emergency evacuation door.

[0051] In the preferred embodiment, the airflow channel 6 is connected to the exhaust section inside the outer edge of the door frame 2 on the side opposite to the fan 7, wherein the shape of the outer edge of the door frame 2 is the overall external structure of the exhaust section, such as... Figure 6 As shown, the exhaust section has an airfoil shape. The airfoil shape generates negative pressure, inducing airflow from behind to enter the exhaust section, further increasing the air volume and thus obtaining strong wind. Furthermore, the cross-sectional dimensions of the exhaust section gradually increase from the interior of the door frame 2 towards the exterior.

[0052] In the above scheme, the intake air is accelerated and diffused into the exhaust section of the entire door frame 2, and discharged through the air outlet 5 located on the door frame 2, which makes the exhaust area larger. At the same time, the cross-sectional size of the exhaust section gradually increases from the inside of the door frame 2 to the outside, which helps to optimize the airflow path and improve the exhaust efficiency. The airfoil exhaust section design can more effectively guide the airflow and keep it at a high speed during the exhaust process, thereby enhancing the exhaust capacity and blocking toxic fumes. The exhaust section is combined with the outer edge of the door frame 2, which cleverly utilizes the space inside the door frame 2 to form the exhaust section.

[0053] Specifically, the entire door frame 2 is a one-piece molded structure, correspondingly, such as Figure 6As shown, the exhaust section is integrally formed by connecting and sequentially forming a first arc segment 51, a first contraction surface 52, a second contraction surface 53, and a second arc segment 54. The first contraction surface 52 and the second contraction surface 53 are arranged opposite to each other, with one end of the first contraction surface 52 and one end of the second contraction surface 53 close to each other and connected. The side of the exhaust section with the second contraction surface 53 is located close to the door body 1, and the side of the exhaust section with the first contraction surface 52 is located away from the door body 1. The end of the first contraction surface 52 away from the first arc segment 51 extends obliquely towards the second contraction surface 53, then obliquely away from the second contraction surface 53, and then obliquely towards the second contraction surface 53 again until it connects with the end of the second contraction surface 53. The end face of the second arc segment 54 away from the second contraction surface 53 overlaps with the end face of the first arc segment 51 away from the first contraction surface 52 and is spaced apart to form an air outlet 5, which faces the room. The gap formed by the first arc segment 51 and the second arc segment 54 as the air outlet 5 should be as small as possible, for example, set the gap to 1.3mm, so that air is ejected from the air outlet 5 at high speed, forming an airflow barrier along the contour of the door frame 2.

[0054] In the above scheme, the door frame 2 and the exhaust section are integrally formed, reducing structural weaknesses caused by splicing seams and significantly improving the overall strength and stability. The air accelerated by the centrifugal fan on the top of the door 3 is discharged into the exhaust sections on both sides of the door body 1 and above the top of the door 3, and is pushed to the narrow air outlet 5 for discharge. The air discharged from the air outlet 5, which matches the outline shape of the door frame 2, forms an airflow barrier that can cover the area around the air outlet 5, drive away the smoke, and ensure the safety of personnel evacuation. Furthermore, through the cooperation of the above structures, the aerodynamics is accelerated, which can increase the wind speed by 15 times.

[0055] like Figure 1 As shown, in the preferred embodiment, a push-bar lock 10 is also provided on the side of the door 1 closest to the interior. A door handle is provided on the side of the door 1 closest to the exterior, facilitating opening the door from the outside during maintenance. The push-bar lock 10 can be an existing push-bar lock structure or purchased as needed; no further limitations are specified here. By installing a push-bar lock 10 on the interior side of the emergency evacuation door 1 to lock the door 1, in the event of a fire or other emergency, the push-bar lock 10 allows people to quickly open the evacuation door and escape the danger zone rapidly; under normal circumstances, the push-bar lock 10 has an anti-theft function, restricting the passage of unauthorized personnel.

[0056] As can be imagined, in the event of a fire, it can be linked with the fire alarm to actively start the fan 7 and release the restriction on the push rod lock 10, further ensuring the timeliness of emergency evacuation and guaranteeing the safety of personnel evacuation.

[0057] like Figure 1-2As shown, in the preferred embodiment, an observation window 11 is also provided on the door 1. Its main structure includes a window frame and glass installed within the frame. The glass can be made of high-temperature resistant, fire-resistant glass, or other transparent materials and is sealed. The core component of the observation window 11 is the glass, which, while withstanding high temperatures and flames, must maintain good visibility in emergencies such as fires. The observation window 11 allows personnel to observe the situation, including whether evacuation routes are unobstructed and whether there are any obstacles, thus aiding in emergency evacuation.

[0058] In the preferred embodiment, a fire alarm device is also installed on the emergency evacuation door, which is electrically connected to the fan 7. The fire alarm device can be a smoke detector. When a fire occurs, the smoke detector is triggered, and the fire alarm device transmits a signal to the fan 7. Upon receiving the signal, the fan 7 starts. After starting, the fan 7 actively draws in outside air through the centrifugal fan on the top 3 of the door, accelerates it, and then enters the exhaust section of the door frame 2 through the airflow channel 6. The air is then blown into the room through the air outlet 5. The accelerated airflow forms a continuous airflow along the outer contour of the door frame and remains stable within a reasonable wind speed range. This ensures that the wind speed can remove indoor smoke without obstructing personnel evacuation. When personnel reach the location of the emergency evacuation door, the inside of the door has already isolated the smoke, ensuring evacuation safety.

[0059] Secondly, an air-supported membrane structure is also provided, including an emergency evacuation door. In use, the emergency evacuation door can be directly installed at the required location within the air-supported membrane structure. In this embodiment, the emergency evacuation door can be linked to a fire alarm. When a fire occurs, the fan 7 is activated, drawing in air through a centrifugal fan on the top of the door 3. The air then enters the exhaust section of the door frame 2 through the airflow channel 6, accelerating the exhaust. The exhausted fresh air convects with the smoke, blocking the smoke exhaust but not hindering personnel escape, thus dispersing the smoke and ensuring that smoke is promptly blown away during evacuation, preventing it from escaping with the personnel. Furthermore, no additional compressor is needed; the centrifugal fan, combined with the design of the exhaust section and the outlet 5 structure, accelerates the airflow, increasing the air volume by more than 15 times.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An active smoke exhaust emergency evacuation door for an air-supported membrane structure, characterized in that, include: The door body (1), door frame (2) and door top (3) are provided above the door body (1), and the door frame (2) surrounds the door top (3) and the door body (1) and is provided on the outside of the door top (3) and the door body (1) connected together. An air outlet (5) is provided on the side of the door frame (2) near the interior. The air outlet (5) is arranged along the outline of the door frame (2) near the outer edge of the door frame (2). An air inlet grille (4) and an airflow channel (6) connecting the air inlet grille (4) and the air outlet (5) are provided on the top of the door (3). The air inlet grille (4) is located on the side of the top of the door (3) near the exterior.

2. The active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 1, characterized in that, A fan (7) is also provided inside the top of the door (3). A fan inlet base (9) is provided below the fan (7). The fan inlet base (9) has a base air inlet evenly opened in the circumferential direction. The fan (7) is connected to the air inlet grille (4) through the fan inlet base (9).

3. The active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 2, characterized in that, The air intake grilles (4) are arranged in a fan shape on the side of the door top (3) near the outside, and the multiple air intake grilles (4) are arranged symmetrically about the axis of symmetry of the door top (3); The fan (7) is located in the middle of the top of the door (3). A fan housing (8) is provided around the outside of the fan (7). The fan housing (8) extends from the upper surface of the fan inlet base (9) to communicate with the inside of the door frame (2).

4. The active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 3, characterized in that, The internal connection of the fan housing (8) forms the airflow channel (6) for air circulation. The air drawn in from the air inlet grille (4) is driven upward by the fan (7) through the fan inlet base (9) and moves through the fan housing (8) to the inside of the door frame (2).

5. An active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 4, characterized in that, The airflow channel (6) is connected to the exhaust section inside the door frame (2) on the side away from the fan (7); the exhaust section has an airfoil shape. The cross-sectional dimensions of the exhaust section gradually increase from indoors to outdoors.

6. The active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 5, characterized in that, The exhaust section is formed by connecting and integrally molding a first arc segment (51), a first contraction surface (52), a second contraction surface (53), and a second arc segment (54) in sequence. The first contraction surface (52) and the second contraction surface (53) are arranged opposite to each other. The end of the first contraction surface (52) away from the first arc segment (51) extends obliquely towards the second contraction surface (53), then obliquely towards the second contraction surface (53), and finally obliquely towards the second contraction surface (53) until it connects with the end of the second contraction surface (53). The end face of the second arc segment (54) away from the second contraction surface (53) overlaps with the end face of the first arc segment (51) away from the first contraction surface (52) and is spaced apart to form the air outlet (5), which is opened towards the room. The exhaust section with the second contraction surface (53) is located close to the door body (1), and the exhaust section with the first contraction surface (52) is located away from the door body (1).

7. The active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 1, characterized in that, The top of the door (3) is semi-circular, semi-elliptical or rectangular.

8. The active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 1, characterized in that, A push rod lock (10) is provided on the inner side of the door (1); An observation window (11) is also provided on the door (1).

9. An active smoke exhaust emergency evacuation door for an air-supported membrane structure according to claim 2, characterized in that, Also includes: A fire alarm device, which is electrically connected to the fan (7).

10. An air-supported membrane structure, characterized in that, include: An active smoke exhaust emergency evacuation door for an air-supported membrane as described in any one of claims 1-9.

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