Smoke blocking device for clean workshop
By installing a retractable smoke barrier within the recessed area of the cleanroom ceiling structure, the problem of the smoke curtain occupying space is solved, thereby reducing the height and cost of the cleanroom.
Patent Information
- Application Number
- CN202423228781.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing smoke curtains occupy too much space in cleanrooms, resulting in the cleanroom's process height not meeting production needs and increasing construction costs.
A recess is set in the ceiling structure of the cleanroom, and the smoke-blocking device is placed in the recess so that it can be retracted in the event of a fire, reducing the space occupied. The design of the roller and smoke-blocking part is used to achieve the telescopic function.
It effectively reduces the overall height and construction cost of cleanrooms while maintaining process height requirements, and improves structural compactness and ease of installation.
Smart Images
Figure CN223914548U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cleanroom technology, and in particular to a smoke-blocking device for cleanrooms. Background Technology
[0002] With economic development, the demand for cleanrooms is increasing. Cleanrooms must meet not only cleanliness requirements but also fire safety requirements. Currently, this is achieved by installing fixed fire-resistant glass or steel plates as smoke curtains, or by installing folded-plate smoke curtains. However, existing smoke curtains occupy additional space, potentially causing the cleanroom's height to be insufficient for production needs. In such cases, the overall height of the cleanroom needs to be increased to meet the required height, which in turn increases construction costs.
[0003] Therefore, how to reduce the space occupied by smoke curtains in cleanrooms in order to lower the overall height of cleanrooms and thus reduce construction costs has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0004] This invention provides a smoke-blocking device for cleanrooms, which reduces the space occupied by the smoke-blocking device in the cleanroom, thereby effectively reducing the overall height of the cleanroom and lowering the construction cost of the cleanroom.
[0005] This utility model provides a smoke-blocking device for a cleanroom. The cleanroom includes a main body, and the smoke-blocking device is located within the main body. The smoke-blocking device includes a ceiling structure and a smoke-blocking structure. The ceiling structure divides the main body into adjacent first-floor and second-floor spaces. The ceiling structure includes a groove, with the opening of the groove facing the first-floor space. The smoke-blocking structure is disposed in the groove, and a portion of the smoke-blocking structure is movable towards or away from the bottom of the first-floor space.
[0006] The smoke-blocking device for cleanrooms provided by this invention allows most of the smoke-blocking structure to be located within a recess when no fire occurs, thus reducing the space occupied by the smoke-blocking structure outside the recess. This effectively reduces the overall height of the cleanroom and its construction costs while still meeting the process height requirements of a single-story space.
[0007] In one possible implementation of this invention, the depth of the groove is A, and A satisfies: 500mm ≤ A ≤ 700mm. This can improve the structural compactness of the smoke-blocking device while meeting the installation space requirements of the smoke-blocking structure, thereby further reducing the overall height of the cleanroom and the construction cost of the cleanroom.
[0008] In one possible implementation of this invention, the smoke-blocking device further includes a roller located in a groove and rotatably connected to the side wall of the groove. The smoke-blocking structure is wound around the roller. This allows the smoke-blocking structure to extend and retract towards the bottom of the first-floor space while improving the structural simplicity of the smoke-blocking device.
[0009] In one possible implementation of this invention, the smoke-blocking structure includes multiple smoke-blocking parts arranged in a matrix and spliced together along the circumference of the roller. Thus, during the winding of the smoke-blocking structure onto the roller, the included angle between two adjacent smoke-blocking parts decreases, and the line connecting the multiple smoke-blocking parts along the circumference of the roller tends to be arc-shaped, which improves the ease of winding the smoke-blocking structure onto the roller.
[0010] In one possible implementation of this invention, the smoke-blocking part includes a connecting structure and two bent structures. The connecting structure is located between and connected to the two bent structures. The bent structures of adjacent smoke-blocking parts interlock with each other. This satisfies the functional requirements of the smoke-blocking part while improving its structural simplicity.
[0011] In one possible implementation of this utility model, the ceiling structure further includes a first plate structure, a second plate structure, and a fan. The first and second plate structures are spaced apart along the extending direction of the first plate structure and are used to cover the groove opening. A portion of the smoke-blocking structure is located in the gap between the first and second plate structures. Along the direction from the bottom of the groove to the groove opening, the projection of the gap lies within the groove opening. The fan is installed in the second-level space; the bottom of the groove includes an air inlet, and the fan's air outlet communicates with the air inlet. Thus, in the event of a fire, the risk of smoke entering the groove can be reduced while simultaneously improving the structural simplicity and ease of installation of the smoke-blocking device.
[0012] In one possible implementation of this invention, the first plate structure and / or the second plate structure are provided with ventilation holes. The air outlet of the fan is positioned opposite to the ventilation holes. This is beneficial for improving the flow efficiency of clean air.
[0013] In one possible implementation of this utility model, the opening ratio of the ceiling structure is α, and α satisfies: 20% ≤ α < 25%. This allows the clean airflow blown out by the fan to enter the first-floor space through the ventilation holes to further improve the cleanliness of the first-floor space, while also further reducing the risk of smoke and dust flowing back into the groove through the ventilation holes.
[0014] In one possible implementation of this invention, the gap size is B, and B satisfies: 40mm ≤ B ≤ 80mm. This allows the gap size to meet the dimensional requirements of the smoke-blocking structure while improving the compactness of the stop device.
[0015] In one possible implementation of this invention, a stop is provided at one end of the smoke-blocking structure. The stop is located on the side of the first plate structure away from the groove and is used to abut against the ceiling structure. This avoids the risk that the baffle structure will not be able to extend out of the groove after it is fully inserted into it. Attached Figure Description
[0016] Figure 1 A schematic diagram of a smoke-blocking device for cleanrooms provided by this utility model;
[0017] Figure 2 for Figure 1 A partial enlarged view of point A of the smoke-blocking device provided for a cleanroom;
[0018] Figure 3 for Figure 1 Axonometric view of the groove of the provided smoke-blocking device;
[0019] Figure 4 A schematic diagram of a smoke-blocking structure provided by this utility model;
[0020] Figure 5 Another structural schematic diagram of the smoke-blocking structure provided by this utility model;
[0021] Figure 6 for Figure 3 A schematic diagram of one possible structure of the provided groove.
[0022] Attached reference numerals: 01-Workshop body; 1-Ceiling structure; 11-Groove; 12-First T-shaped keel; 13-Second T-shaped keel; 14-Side sealing plate; 15-Top sealing plate; 16-First plate structure; 17-Second plate structure; 18-Fan; 19-Stop part; 2-Smoke barrier structure; 21-Smoke barrier part; 211-Connecting structure; 212-Bending structure; 3-Roller. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this utility model are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the protection scope of this utility model. The accompanying drawings of the embodiments of this utility model are only for illustrating relative positional relationships and do not represent actual proportions.
[0024] It should be noted that specific details are set forth in the following description to facilitate understanding of this utility model. However, this utility model can be implemented in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0025] With economic development, the demand for cleanrooms is increasing. Cleanrooms must meet not only cleanliness requirements but also fire safety requirements. Currently, this is achieved by installing fixed fire-resistant glass or steel plates as smoke curtains, or by installing folded-plate smoke curtains. However, existing smoke curtains occupy additional space, potentially causing the cleanroom's height to be insufficient for production needs. In such cases, the overall height of the cleanroom needs to be increased to meet the required height, which in turn increases construction costs.
[0026] In view of this, the smoke-blocking device for cleanrooms provided by this utility model involves setting a groove in the ceiling of the cleanroom and placing the smoke-blocking device within the groove, while allowing the smoke-blocking portion of the device to extend and retract outwards from the groove. Thus, in the absence of a fire, the smoke-blocking portion can be retracted into the groove, effectively reducing the space occupied by the smoke-blocking device in the cleanroom, lowering the overall height of the cleanroom, and reducing the construction cost. To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings and specific embodiments.
[0027] refer to Figure 1 , Figure 1 This is a schematic diagram of a smoke-blocking device for a cleanroom provided by this utility model. The smoke-blocking device is used in a cleanroom. The cleanroom includes a building body 01, and the smoke-blocking device is located inside the building body 01 to meet the fire protection requirements of the cleanroom.
[0028] refer to Figure 2 , Figure 2 for Figure 1 The provided image shows a partial enlarged view of point A of a smoke-blocking device for a cleanroom. The smoke-blocking device includes a ceiling structure 1 and a smoke-blocking structure 2. The ceiling structure 1 divides the main body of the cleanroom 01 into adjacent first-floor and second-floor spaces, as shown below. Figure 2 The diagram shows a lower layer (the space formed by the side walls and bottom of the main building 01 and the bottom surface of the ceiling structure 1) and an upper layer (the space formed by the side walls and top of the main building 01 and the top surface of the ceiling structure 1) that are separated and arranged opposite each other along the Z-axis direction by the ceiling structure 1. The first-floor space is a clean room, and the second-floor space is a technical mezzanine used for installing fresh air systems, air ducts, or pipelines.
[0029] Please refer to the above. Figure 1 and Figure 2 In the specific installation of the ceiling structure 1, the ceiling structure 1 includes a groove 11, and the groove opening of the groove 11 faces the first-floor space. In addition, a smoke-blocking structure 2 is installed in the groove 11, and a portion of the smoke-blocking structure 2 is used to move towards or away from the bottom of the first-floor space through the groove opening.
[0030] It should be noted that the length of the smoke-blocking structure 2 extending out of the groove 11 can be adjusted according to actual needs. For example, the length of the smoke-blocking structure 2 extending out of the groove 11 is m, and m satisfies: 500mm≤m≤1000mm.
[0031] The smoke-blocking device for cleanrooms provided by this invention involves placing the smoke-blocking structure 2 within a recess 11 of the ceiling structure 1, and allowing the smoke-blocking structure 2 to move towards or away from the bottom of the first-floor space. In the absence of a fire, most of the smoke-blocking structure 2 is positioned within the recess 11, reducing the space occupied by the smoke-blocking structure 2 outside the recess 11. This effectively reduces the overall height of the cleanroom and its construction costs while still meeting the process height requirements of the first-floor space.
[0032] It should be noted that the process height of the first-floor space is as follows: Figure 1 The height H along the Z direction is shown.
[0033] In one feasible implementation, continue to refer to Figure 2 The ceiling structure 1 also includes multiple first T-shaped keels 12 and at least two second T-shaped keels 13, wherein both the first T-shaped keels 12 and the second T-shaped keels 13 are along the Y direction (i.e., Figure 2 Extending in a direction perpendicular to both the X and Z directions, and along the X direction, multiple first T-shaped keels 12 are spaced apart and parallel to each other. Adjacent first T-shaped keels 12 are connected by a steel structure.
[0034] Along the Z-direction, the second T-shaped keel 13 and the first T-shaped keel 12 are spaced apart, and the second T-shaped keel 13 is closer to the bottom of the groove 11 than the first T-shaped keel 12, and both are referenced. Figure 2 and Figure 3 , Figure 3 The isometric view of the groove 11 shows that the second T-shaped keel 13 is connected to the first T-shaped keel 12 by a side sealing plate 14. Multiple second T-shaped keels 13 are spaced apart and parallel to each other along the X direction. Adjacent second T-shaped keels 13 are connected by a steel structure, and the surface of the steel structure is covered by a top sealing plate 15.
[0035] In addition, the side sealing plate 14 and the top sealing plate 15 are used to form a groove 11, the depth of which is A, and A satisfies: 500mm≤A≤700mm. This can improve the structural compactness of the smoke-blocking device while meeting the installation space requirements of the smoke-blocking structure 2, thereby further reducing the overall height of the cleanroom and the construction cost of the cleanroom.
[0036] In one specific embodiment, continue to refer to Figure 2 The smoke-blocking device also includes a roller 3, which is located in the groove 11 and is rotatably connected to the side wall of the groove 11. In this way, the smoke-blocking structure 2 can be extended or retracted toward the bottom of the first-floor space by winding the smoke-blocking structure 2 around the roller 3 and then rotating the roller 3.
[0037] When specifically setting up smoke-blocking structure 2, refer to... Figure 4 , Figure 4 This is a schematic diagram of a smoke-blocking structure 2 provided by this utility model. The smoke-blocking structure 2 includes multiple smoke-blocking parts 21, which are arranged in a matrix and spliced together along the circumference of the roller 3. It can be understood that when the multiple smoke-blocking parts 21 extend out of the groove 11 (the multiple smoke-blocking parts 21 are in the position as shown in the diagram),... Figure 3 When in the unfolded state shown, along the direction from the bottom of the groove 11 to the opening (e.g. Figure 3 (As shown in the Z direction), multiple smoke-blocking parts 21 are arranged in a matrix and spliced together.
[0038] By adopting the smoke-blocking structure 2 provided by this utility model, along the direction from the bottom of the groove 11 to the opening of the groove, the smoke-blocking structure 2 is designed as multiple interconnected smoke-blocking parts 21. In this way, during the process of the smoke-blocking structure 2 being wound around the roller 3, the included angle between two adjacent smoke-blocking parts 21 will become smaller. At the same time, along the circumference of the roller 3, the connecting line of multiple smoke-blocking parts 21 tends to be arc-shaped, which is beneficial to improving the convenience of winding the smoke-blocking structure 2 around the roller 3.
[0039] It is understandable that as the length of the smoke-blocking part 21 decreases continuously along the circumference of the scroll 3, the line connecting multiple smoke-blocking parts 21 will tend to be arc-shaped, and adjacent smoke-blocking parts 21 will abut against each other along the radial direction of the scroll 3.
[0040] When specifically setting up the smoke-blocking part 21, please continue to refer to... Figure 4 The smoke-blocking part 21 includes a connecting structure 211 and two bending structures 212. The connecting structure 211 is located between and connected to the two bending structures 212. At the same time, the bending structures 212 of two adjacent smoke-blocking parts 21 are interlocked with each other. In this way, the functional requirements of the smoke-blocking part 21 can be met while improving the structural simplicity of the smoke-blocking part 21.
[0041] This utility model does not limit the specific shape of the bending structure 212. When the bending structure 212 is specifically set, the bending structure 212 is exemplarily U-shaped, and one end of the U-shape is connected to the connecting structure 211, and the other end of the U-shape is inserted into the insertion groove formed by the bending structure 212 of the adjacent smoke-blocking part 21, so as to realize the mutual connection of the two adjacent smoke-blocking parts 21.
[0042] In one possible implementation, the bending structure 212 can also be as follows: Figure 4 The arc shape shown has an arc angle greater than 90°. One end of the arc is connected to the connecting structure 211, and the other end is inserted into the insertion groove formed by the bending structure 212 of the adjacent smoke-blocking part 21. The end of the arc inserted into the insertion groove is opposite to the side wall of the insertion groove, which can further reduce the risk of the end of the smoke-blocking part 21 detaching from the insertion groove, thereby further improving the connection stability between two adjacent smoke-blocking parts 21.
[0043] In addition, the snap joints of the two adjacent smoke-blocking parts 21 are sealed, which further reduces the risk of smoke passing through the smoke-blocking structure 2 in the event of a fire.
[0044] It is worth mentioning that, in one possible implementation, the bending structure 212 can also be as follows: Figure 5 The arc shape shown has an arc angle greater than 90°. One end of the arc is connected to the connecting structure 211, and the other end is inserted into the insertion groove formed by the bending structure 212 of the adjacent smoke-blocking part 21. The end of the arc inserted into the insertion groove is opposite to the side wall of the insertion groove. At the same time, along the direction of gravity, the connecting structures 211 of the two adjacent smoke-blocking parts 21 are coplanar. In this way, during the process of winding the smoke-blocking part 21 onto the roller 3, the adjacent connecting structures 211 can abut against each other along the radial direction of the roller 3. This helps to reduce the space occupied by the connecting structure and improve the ease of connection between the smoke-blocking part 21 and the roller 3.
[0045] It should be noted that the material of the smoke baffle 21 can be determined according to actual needs. For example, it can be a metal material, such as stainless steel or galvanized steel. This helps reduce the possibility of dust adhering to the surface of the smoke baffle 21, and also improves the ease of processing the bending structure 212.
[0046] In one possible implementation, such as Figure 2 As shown, the smoke-blocking device also includes a roller housing 3, which is bolted to a top sealing plate or steel structure. The roller 3 is housed within the roller housing 3 and is rotatably connected to the side wall of the roller housing 3. The smoke-blocking structure 2 extends and retracts through the bottom of the roller housing 3 towards the outside of the groove 11. This allows the roller 3, the roller housing 3, and the smoke-blocking structure 2 to form a connected whole, which improves the ease of installation of the smoke-blocking structure 2.
[0047] It should be noted that the size of the roller shutter box 3 can be determined according to the requirements. For example, along the Z direction, when the distance between the second T-shaped keel 13 and the first T-shaped keel 12 is 600mm, the height of the roller shutter box along the Z direction is 400mm.
[0048] In addition, the smoke-blocking device also includes a drive unit and a control switch for driving the roller 3 to rotate. The drive unit can be, for example, a motor, a drive gear, a driven gear, and a chain, with the drive gear connected to the driven gear via the chain. The roller 3 is inserted into the gear hole of the driven gear, and the motor's drive shaft is inserted into the gear hole of the drive gear to drive the roller 3 to rotate.
[0049] The control switch is electrically connected to the motor, and the control switch is exemplarily located at a distance of 1.3 to 1.5 meters from the cleanroom floor.
[0050] In one specific embodiment, reference is also made to Figure 3 and Figure 6 , Figure 6 For Figure 3 The structure at the groove opening of the recess 11, the ceiling structure 1 also includes a first plate structure 16, a second plate structure 17, and a fan 18. Along the extending direction of the first plate structure 16, the first plate structure 16 and the second plate structure 17 are spaced apart, that is, there is a gap between the first plate structure 16 and the second plate structure 17, and the first plate structure 16 and the second plate structure 17 are used to cover the groove opening of the recess 11. Meanwhile, as... Figure 2 As shown, along the direction from the bottom to the opening of the groove 11, the projection of the gap is located within the opening. The fan 18 is positioned in the second-level space, and its outlet is connected to the inlet at the bottom of the groove 11. This allows clean airflow to be blown into the groove 11 via the fan 18, and the airflow can enter the first-level space through the gap between the first plate structure 16 and the second plate structure 17. This improves the cleanliness of the first-level space while reducing the possibility of dust accumulation in the groove 11.
[0051] A portion of the smoke-blocking structure 2 is located in the gap between the first plate structure 16 and the second plate structure 17, allowing a portion of the smoke-blocking structure 2 to move towards the first-floor space through this gap. This reduces the risk of smoke entering the recess 11 during a fire, while also improving the structural simplicity and ease of installation of the smoke-blocking device.
[0052] In addition, a stop portion 19 is provided at one end of the smoke-blocking structure 2. The stop portion 19 is located on the side of the first plate structure 16 away from the groove 11 and is used to abut against the ceiling structure 1. The stop portion 19 is exemplarily a bend or protrusion provided at one end of the smoke-blocking structure 2. The protrusion is exemplarily welded to one end of the smoke-blocking structure 2. Along the extending direction of the first plate structure 16, the size of the bend or protrusion is larger than the size of the gap between the first plate structure 16 and the second plate structure 17. This avoids the risk that the baffle structure cannot extend out of the groove 11 after it is fully inserted into the groove 11.
[0053] It is understandable that, along the extension direction of the first plate structure 16, the size of the stop portion 19 is larger than the size of the bending structure 212.
[0054] It should be noted that the size of the gap between the first plate structure 16 and the second plate structure 17 can be adjusted according to actual needs. For example, the size of the gap between the first plate structure 16 and the second plate structure 17 is B, and B satisfies: 40mm≤B≤80mm. The size of the stop part 19 is C, and C satisfies: 60mm≤C≤100mm. This can improve the compactness of the stop device while ensuring that the size of the gap meets the size requirements of the smoke-blocking structure 2.
[0055] When specifically setting up the fan 18, the fan 18 can be installed on the steel structure located at the bottom of the groove 11. Along the X direction, the bottom of the groove 11 can include two spaced-apart top sealing plates, and the gap between the two is the air inlet, which helps to improve the ease of installation of the smoke blocking device.
[0056] Understandably, users can install multiple interlocking top sealing plates according to the length of the roll 3 to adjust the space of the groove 11 and improve the versatility of the smoke-blocking device.
[0057] Furthermore, along the axial direction of the roller 3, the length of the smoke-blocking structure 2 provided by this utility model is less than or equal to 4m. When the actual required length of the smoke-blocking structure 2 is greater than 4m, multiple smoke-blocking devices can be installed, and the smoke-blocking structures 2 of adjacent smoke-blocking devices overlap each other (i.e., along the axial direction of the roller 3). Figure 2 In the X direction shown, the surfaces of two adjacent smoke-blocking structures 2 partially overlap each other, with an exemplary overlap dimension greater than or equal to 100 mm. This effectively reduces the risk of smoke and dust penetrating through the gap between two adjacent smoke-blocking structures 2.
[0058] In one optional embodiment, the first plate structure 16 or the second plate structure 17 is provided with ventilation holes, or both are provided with ventilation holes, and the air outlet of the fan 18 is arranged opposite to the ventilation holes, which is beneficial to improving the circulation efficiency of clean airflow.
[0059] The opening ratio of the suspended ceiling structure 1 is α, and α satisfies: 20% ≤ α < 25%. This ensures that the clean airflow blown out by the fan 18 enters the first-floor space through the ventilation holes to further improve the cleanliness of the first-floor space, while also further reducing the risk of smoke and dust flowing back into the groove 11 through the ventilation holes.
[0060] It is understood that the openings in the aforementioned ceiling structure 1 include the gap between the first plate structure 16 and the second plate structure 17, as well as ventilation holes.
[0061] It should be noted that a fan 18 is also installed outside the recess 11 of the ceiling structure 1, and when the opening ratio α is 24% for example, the fan 18 arrangement ratio can be 25%-100%, so that the cleanliness level of the workshop can reach over Class 1000. At the same time, the ceiling structure 1 is also equipped with a smoke exhaust outlet to meet the fire protection requirements of the cleanroom.
[0062] In summary, the smoke-blocking device for cleanrooms provided by this utility model involves placing the smoke-blocking structure 2 within the groove 11 of the ceiling structure 1, and extending / retracting the smoke-blocking structure 2 towards the outside of the groove 11. Thus, in the absence of a fire, most of the smoke-blocking structure 2 will be located within the groove 11, reducing the space occupied by the smoke-blocking structure 2 outside the groove 11. This effectively reduces the overall height of the cleanroom while meeting the process height requirements of a single-story space, thereby lowering the construction cost of the cleanroom.
[0063] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A smoke barrier for a clean room, the clean room comprising a room body, the smoke barrier being located in the room body, characterized by, The smoke blocking device comprises a ceiling structure and a smoke blocking structure, the ceiling structure is used for separating the factory building body into an adjacent first floor space and a second floor space, wherein: The ceiling structure comprises a groove, and an opening of the groove faces the first floor space; The smoke blocking structure is arranged in the groove, and part of the smoke blocking structure is used for moving towards or away from the bottom of the first floor space.
2. The smoke barrier for a clean room according to claim 1, wherein The depth of the groove is A, and A satisfies: 500mm≤A≤700mm.
3. The smoke barrier for a clean room according to claim 1, wherein The smoke blocking device further comprises a reel, the reel is located in the groove and rotationally connected with the sidewall of the groove; The smoke blocking structure is wound on the reel.
4. The smoke barrier for a clean room according to claim 3, wherein The smoke blocking structure comprises a plurality of smoke blocking parts, and the plurality of smoke blocking parts are arranged in a matrix and spliced with each other along the circumference of the reel.
5. The smoke damming device for a clean room according to claim 4, wherein The smoke blocking part comprises a connecting structure and two bending structures, the connecting structure is located between the two bending structures and connected with the two bending structures; The bending structures of two adjacent smoke blocking parts are clamped with each other.
6. The smoke barrier for a clean room according to claim 1, wherein The ceiling structure further comprises a first plate structure, a second plate structure and a fan, the first plate structure and the second plate structure are arranged at intervals along the extension direction of the first plate structure and used for covering the opening; Part of the smoke blocking structure is located in the gap between the first plate structure and the second plate structure; In the direction from the groove bottom to the opening of the groove, the projection of the gap is located in the opening; The fan is arranged in the second floor space; the groove bottom comprises an air inlet, and the air outlet of the fan is in communication with the air inlet.
7. The smoke damming device for a clean room according to claim 6, wherein The first plate structure and / or the second plate structure are provided with a ventilation hole; the air outlet of the fan is arranged opposite to the ventilation hole.
8. The smoke damming device for a clean room according to claim 7, wherein The open area ratio of the ceiling structure is α, and α satisfies: 20%≤α<25%.
9. The smoke damming device for a clean room according to claim 6, wherein The size of the gap is B, and B satisfies: 40mm≤B≤80mm.
10. The smoke damming device for a clean room according to claim 6, wherein One end of the smoke blocking structure is provided with a stopper, the stopper is located on the side of the first plate structure away from the groove and used for abutting against the ceiling structure.