An energy-saving fresh air component for cleanrooms

Abstract

This invention discloses an energy-saving fresh air assembly for cleanrooms, relating to the field of fresh air technology. It includes a cleanroom body, with a top plate fixedly installed between the two inner walls of the cleanroom body. An inner chamber is fixedly installed on the lower inner wall of the cleanroom body, with return air holes on the side walls of the inner chamber. The upper end of the inner chamber is fixedly installed on the lower wall of the top plate. A first fresh air fan introduces outside air into a fresh air filter box, where it is filtered and cleaned by a filter plate. The fresh air is then introduced into the cleanroom body through a first outlet duct. Fresh air enters a second connecting pipe through a return air hole, is filtered by a filter plate in the return air filter box, and is then reintroduced into the cleanroom body through the second outlet duct, thus achieving air source recycling and energy-saving effects. Through the cooperation of limiting components and connecting components, the filter plate can be periodically replaced and repaired, achieving external disassembly of the filter plate.

Description

Technical Field

[0001] This invention relates to the field of fresh air technology, specifically to an energy-saving fresh air component for cleanrooms. Background Technology

[0002] The development of cleanrooms is closely linked to modern industry and cutting-edge technology. The environmental requirements of precision machinery industries (such as the processing of gyroscopes and miniature bearings) and semiconductor industries (such as the production of large-scale integrated circuits) have promoted the development of cleanroom technology. Domestic statistics have shown that the yield rate of MOS circuit chips produced in environments without cleanliness requirements is only 10%–15%, and only 2% for 64-bit memory. Currently, the application of cleanrooms is quite common in industries such as precision machinery, semiconductors, aerospace, and nuclear energy.

[0003] A cleanroom fresh air system is a system specifically designed to provide cleanrooms with rigorously filtered, temperature and humidity regulated, and pressure-controlled fresh air. It is a core component in maintaining a cleanroom environment that meets specific cleanliness levels (such as ISO 14644 or GMP standards), ensuring that indoor air quality meets the requirements of production processes or experiments.

[0004] The existing fresh air system simply uses a fresh air fan to provide fresh air to the clean room. However, the existing fresh air system results in a significant waste of fresh air and resources. Furthermore, the existing fresh air filter panels are installed in a fixed manner, which makes it impossible to quickly disassemble the filter panels during replacement and maintenance, thus reducing the efficiency of filter panel replacement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an energy-saving fresh air component for cleanrooms. It solves the technical problems of existing fresh air methods that simply use fresh air fans to provide fresh air to cleanrooms, resulting in significant waste of fresh air and resources. Furthermore, the existing fresh air filter panels are installed in a fixed manner, which prevents quick disassembly during replacement and maintenance, thus reducing the efficiency of filter panel replacement.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving fresh air assembly for cleanrooms, comprising a cleanroom body, a top plate fixedly installed between the two inner walls of the cleanroom body, an inner chamber fixedly installed on the lower inner wall of the cleanroom body, a return air hole opened on the side wall of the inner chamber, the upper end of the inner chamber fixedly installed on the lower wall of the top plate, a plurality of first fans fixedly installed on the top plate, a fresh air box fixedly installed on the upper outer wall of the cleanroom body, a filter plate detachably installed on the fresh air box, limit blocks fixedly installed on the two side walls of the filter plate, and the fresh air box... Limiting components are provided on both sides of the filter plate, and a connecting component is provided above the filter plate and the limiting components. A second fan is provided inside the fresh air box and on one side of the filter plate. An air inlet pipe is fixedly installed on the upper wall of the fresh air box and on the side of the second fan. An exhaust pipe is fixedly installed on the side wall of the fresh air box. The other end of the exhaust pipe passes through the clean room body and is located above the top plate. Several first fans are connected to the exhaust pipe. A first connecting pipe and a second connecting pipe are fixedly installed on the side wall of the clean room body and the other side wall of the fresh air box, respectively. A filter component is provided between the first connecting pipe and the second connecting pipe.

[0007] Preferably, the limiting component includes a pair of housings, with an opening on the upper wall of the fresh air housing, into which the filter plate is inserted. The pair of housings are fixedly installed on the upper walls of the return air filter housing and the fresh air filter housing, and located on both sides of the opening. The housings have an open structure on both sides. A flap is rotatably installed between the front and rear walls of the housing. One end of the flap is exposed outside the housing and is rotatably mounted with a roller. A first spring is fixedly installed between the lower wall of the other end of the flap and the lower wall of the housing. A threaded post is hinged to the upper wall of the flap. An elongated hole is opened on the upper wall of the housing. The upper end of the threaded post is exposed outside the elongated hole and is fixedly mounted with a connecting rod. A nut is screwed onto the threaded post.

[0008] Preferably, a limiting plate is fixedly installed on the upper wall of the flap and on one side of the threaded column, and the limiting plate is perpendicular to the flap.

[0009] Preferably, the connecting assembly includes a pair of cylindrical columns, which are fixedly installed on the upper wall of the filter plate. A second spring is fixedly installed on the lower inner wall of each cylindrical column, and a movable rod is fixedly installed on the second spring. The upper end of the movable rod protrudes from the cylindrical column, and a crossbar is fixedly installed between the upper ends of the movable rod. External threaded sleeves are fixedly installed on the lower walls of both ends of the crossbar. The external threaded sleeves have three guide holes. The connecting rod can be inserted into the external threaded sleeves, and the nut can be screwed onto the external threaded sleeves.

[0010] Preferably, the limiting block has a right-angled triangular structure, and the right-angled side of the right-angled triangular structure of the limiting block is parallel to the wall surface of the filter plate.

[0011] Preferably, the space formed by the inner chamber and the side wall of the cleanroom body is a return air zone.

[0012] Preferably, the second connecting pipe is connected to the return air zone.

[0013] Preferably, a hollow column is fixedly installed on the lower outer wall of the fresh air box, a third spring is fixedly installed on the lower inner wall of the hollow column, a rebound rod is fixedly installed on the third spring, and the upper end of the rebound rod passes through the upper wall of the hollow column and the lower wall of the fresh air box.

[0014] Preferably, a filter cylinder is fixedly installed at the lower end of the first connecting pipe, a support rod is fixedly installed on the inner wall of the filter cylinder, a mesh cylinder is fixedly installed on the support rod, a funnel is fixedly installed at the lower end of the filter cylinder, and the funnel is fixedly connected to the lower end of the filter cylinder by bolts. The upper end of the second connecting pipe is a closed structure, and several guide tubes are fixedly installed on the second connecting pipe. The other end of the guide tubes is connected to the filter cylinder. A motor is fixedly installed at the upper end of the second connecting pipe. A shaft is rotatably installed at the lower end of the funnel. The upper end of the shaft passes through the mesh cylinder, and bristles are fixedly installed on the shaft. The bristles are in contact with the inner wall of the mesh cylinder. A connection is provided between the lower end of the shaft and the upper end of the motor.

[0015] Preferably, the connecting part includes a first square rod and a connecting block. The first square rod is fixedly installed on the motor drive end. A second square rod is fixedly installed on the lower end of the shaft. A sliding groove is formed on the side wall of the second square rod. A first slot is formed on the upper wall of the connecting block. A fourth spring is fixedly installed between the lower wall of the first slot and the lower end of the second square rod. A slider is fixedly installed on the inner side wall of the first slot. The slider is slidably installed in the sliding groove. A second slot is formed on the lower wall of the connecting block. The upper end of the first square rod is inserted into the second slot.

[0016] Beneficial Effects: This invention provides an energy-saving fresh air component for cleanrooms, solving the technical problems of existing fresh air systems that simply use a fresh air fan to provide fresh air to the cleanroom, resulting in significant waste of fresh air and resources. Furthermore, the fixed installation of existing fresh air filters hinders quick disassembly and maintenance, reducing the efficiency of filter replacement. This invention's first fresh air fan introduces outside air into the fresh air filter box, where it is filtered and cleaned by the filter plate. The fresh air is then introduced into the cleanroom body through the first outlet duct. Fresh air enters the second connecting pipe through the return air vent, where it is filtered by the filter plate in the return air filter box and then reintroduced into the cleanroom body through the second outlet duct. This achieves air source recycling and energy-saving effects. The combination of limiting and connecting components allows for periodic replacement and maintenance of the filter plate, enabling external removal of the filter plate. The invention achieves the following technical effects:

[0017] 1. By constructing a closed-loop circulation system of "fresh air introduction - cleanroom use - return air filtration - secondary utilization", outside air is filtered by the fresh air box and then sent into the cleanroom. Indoor air enters the second connecting pipe through the return air hole, is filtered again by the filter component, and then flows back to the fresh air box for reuse. This design greatly reduces the demand for outside fresh air, realizes the recycling of air source, significantly reduces energy consumption, and meets the industrial demand for energy conservation and emission reduction.

[0018] 2. By leveraging the synergistic effect of the limiting and connecting components, the filter plate can be easily installed and removed externally. During installation, after the filter plate is inserted into the fresh air box opening, the flap of the limiting component automatically locks the limiting block of the filter plate under the action of a spring, and the filter plate can be fixed by locking it with a nut. During disassembly, the crossbar pressing structure of the connecting component pushes the flap to release the limiting block, and with the help of the elastic force of the bottom rebound rod, the filter plate can be quickly removed. The entire process does not require disassembling complex structures, which greatly shortens the time for filter plate replacement or repair and improves system maintenance efficiency.

[0019] 3. Multi-stage filtration structure: The filter plates in the fresh air box perform preliminary filtration of the introduced outside air. The circulating air is further purified by the filter assembly's mesh cylinder, which is automatically cleaned by motor-driven brushes to prevent clogging. This dual filtration and self-cleaning design ensures that the air entering the cleanroom always meets high cleanliness requirements, guaranteeing the stability of the production or experimental environment.

[0020] 4. The components are rationally laid out, and the connection structure between the fresh air box, filter components and the cleanroom body is compact. It can be installed without major modifications to the existing cleanroom. It is suitable for many fields with strict cleanliness requirements, such as precision machinery, semiconductors, and aerospace, and has broad application prospects. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of an energy-saving fresh air component for cleanrooms according to the present invention;

[0022] Figure 2 This is a cross-sectional view of an energy-saving fresh air assembly for cleanrooms according to the present invention.

[0023] Figure 3 This is a schematic diagram of the airflow structure of an energy-saving fresh air component for cleanrooms according to the present invention;

[0024] Figure 4 This is a schematic diagram of the limiting component and connecting component structure of an energy-saving fresh air system for cleanrooms according to the present invention;

[0025] Figure 5 This is a cross-sectional view of the limiting component and connecting component of an energy-saving fresh air system for cleanrooms according to the present invention.

[0026] Figure 6 This is a schematic diagram of the filter component structure of an energy-saving fresh air system for cleanrooms according to the present invention;

[0027] Figure 7 This is a cross-sectional view of the filter component of an energy-saving fresh air system for cleanrooms according to the present invention.

[0028] Figure 8 for Figure 7 Enlarged view of point A in the image.

[0029] In the diagram: 1. Cleanroom body; 2. Top plate; 3. Inner chamber; 4. Return air vent; 5. First fan; 6. Fresh air box; 7. Filter plate; 8. Limiting block; 9. Second fan; 10. Inlet duct; 11. Exhaust duct; 12. First connecting pipe; 13. Second connecting pipe; 14. Box body; 15. Flip plate; 16. Roller; 17. First spring; 18. Threaded column; 19. Long hole; 20. Connecting rod; 21. Nut; 22. Limiting plate; 3. Cylinder column; 24. Second spring; 25. Moving rod; 26. Crossbar; 27. External threaded sleeve; 28. Hollow column; 29. ​​Third spring; 30. Rebound rod; 31. Filter cylinder; 32. Bearing rod; 33. Mesh cylinder; 34. Funnel; 35. Guide tube; 36. Motor; 37. Shaft; 38. Brush bristles; 39. First square rod; 40. Connecting block; 41. Second square rod; 42. Slide groove; 43. Fourth spring; 44. Sliding block. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-8 This invention provides a technical solution: an energy-saving fresh air assembly for cleanrooms, comprising a cleanroom body 1, a top plate 2 fixedly installed between the two inner walls of the cleanroom body 1, an inner chamber 3 fixedly installed on the lower inner wall of the cleanroom body 1, return air holes 4 provided on the side walls of the inner chamber 3, the upper end of the inner chamber 3 fixedly installed on the lower wall of the top plate 2, a plurality of first fans 5 fixedly installed on the top plate 2, a fresh air box 6 fixedly installed on the upper outer wall of the cleanroom body 1, a filter plate 7 detachably installed on the fresh air box 6, limit blocks 8 fixedly installed on the two side walls of the filter plate 7, and a fresh air box 6 located on both sides of the filter plate 7. A limiting component is provided, and a connecting component is provided above the filter plate 7. A second fan 9 is provided inside the fresh air box 6 and on one side of the filter plate 7. An air inlet pipe 10 is fixedly installed on the upper wall of the fresh air box 6 and on one side of the second fan 9. An exhaust pipe 11 is fixedly installed on the side wall of the fresh air box 6. The other end of the exhaust pipe 11 passes through the clean room body 1 and is located above the top plate 2. Several first fans 5 are connected to the exhaust pipe 11. A first connecting pipe 12 and a second connecting pipe 13 are fixedly installed on the side wall of the clean room body 1 and the other side wall of the fresh air box 6, respectively. A filter component is provided between the first connecting pipe 12 and the second connecting pipe 13.

[0032] The second fan 9 draws outside air into the fresh air box 6 through the air inlet duct 10. The outside air is filtered and cleaned by the filter plate 7 and then introduced into the exhaust duct 11. The first fan 5 introduces the filtered fresh air from the exhaust duct 11 into the cleanroom body 1. The fresh air enters the second connecting pipe 13 through the return air hole 4 and is filtered by the filter assembly. It is then introduced into the fresh air box 6 through the first connecting pipe 12, thereby realizing the recycling of the air source and achieving the effect of energy saving of fresh air. Through the cooperation of the limiting component and the connecting component, the filter plate 7 can be replaced and repaired regularly, realizing the effect of external disassembly of the filter plate 7.

[0033] In this embodiment, the limiting component includes a pair of housings 14. The upper wall of the fresh air box 6 has an opening, and the filter plate 7 is inserted into the opening. The pair of housings 14 are fixedly installed on the upper walls of the return air filter box and the fresh air filter box and are located on both sides of the opening. The two sides of the housings 14 are open structures. A flap 15 is rotatably installed between the front and rear walls of the inner side of the housings 14. One end of the flap 15 is exposed outside the housings 14 and is rotatably installed with a roller 16. A first spring 17 is fixedly installed between the lower wall of the other end of the flap 15 and the lower inner wall of the housings 14. A threaded post 18 is hinged to the upper wall of the flap 15. An elongated hole 19 is opened on the upper wall of the housings 14. The upper end of the threaded post 18 is exposed outside the elongated hole 19 and is fixedly installed with a connecting rod 20. A nut 21 is screwed onto the threaded post 18.

[0034] When the filter plate 7 is installed, insert the filter plate 7 into the opening and push it downward. At this time, the limiting blocks 8 on both sides of the filter plate 7 push the roller 16, which drives the flip plate 15 to tilt. At this time, the spring is stretched until the limiting block 8 passes the flip plate 15, so that the flip plate 15 limits the limiting block 8. At this time, the threaded post 18 is exposed in the elongated hole 19, and the nut 21 is screwed onto the threaded post 18, so that the nut 21 contacts the outer upper wall of the housing 14.

[0035] In this embodiment, a limiting plate 22 is fixedly installed on the upper wall of the flip plate 15 and on one side of the threaded column 18. The limiting plate 22 is perpendicular to the flip plate 15. The limiting plate 22 prevents the threaded column 18 from rotating away from the roller 16.

[0036] In this embodiment, the connecting assembly includes a pair of cylindrical columns 23, which are fixedly installed on the upper wall of the filter plate 7. A second spring 24 is fixedly installed on the lower inner wall of each cylindrical column 23. A moving rod 25 is fixedly installed on the second spring 24. The upper end of the moving rod 25 protrudes from the cylindrical column 23. A crossbar 26 is fixedly installed between the upper ends of the moving rod 25. External threaded sleeves 27 are fixedly installed on the lower walls at both ends of the crossbar 26. The external threaded sleeves 27 have three guide holes. The connecting rod 20 can be inserted into the external threaded sleeves 27, and the nut 21 can be screwed onto the external threaded sleeves 27.

[0037] When the filter plate 7 needs to be disassembled, push the horizontal bar 26 downward. The horizontal bar 26 pushes the moving rod 25 and squeezes the second spring 24 until the connecting rod 20 is inserted into the external threaded sleeve 27. Unscrew the nut 21 from the threaded post 18 and screw the nut 21 onto the external threaded sleeve 27. Continue to push the horizontal bar 26 downward. The horizontal bar 26 pushes the external threaded sleeve 27. The external threaded sleeve 27 pushes the connecting rod 20. The connecting rod 20 pushes the threaded post 18. The threaded post 18 rotates on the flap 15. The threaded post 18 pushes the flap 15 and squeezes the first spring 17. The flap 15 rotates, causing the roller 16 to move upward and separate from the limiting block 8. This causes the filter plate 7 to move upward. Rotate the nut 21 again, causing the nut 21 to move out of the external threaded sleeve 27. The connecting post separates from the external threaded sleeve 27, allowing the filter plate 7 to move out of the opening.

[0038] In this embodiment, the limiting block 8 is configured to have a right-angled triangular structure, and the right-angled side of the right-angled triangular structure of the limiting block 8 is parallel to the upper wall surface of the filter plate 7.

[0039] In this embodiment, the space formed by the inner chamber 3 and the side wall of the cleanroom body 1 is a return air zone.

[0040] In this embodiment, the second connecting pipe 13 is further configured to communicate with the return air zone.

[0041] In this embodiment, a hollow column 28 is fixedly installed on the lower outer wall of the return air filter box and the fresh air filter box. A third spring 29 is fixedly installed on the lower inner wall of the hollow column 28. A rebound rod 30 is fixedly installed on the third spring 29. The upper end of the rebound rod 30 passes through the upper wall of the hollow column 28, the lower wall of the return air filter box, and the lower wall of the fresh air filter box. During the process of the filter plate 7 moving out of the opening, the third spring 29 releases its elastic force to push the rebound rod 30. The rebound rod 30 pushes the filter plate 7, causing the filter plate 7 to move out of the opening.

[0042] In this embodiment, the filter cylinder 31 is fixedly installed at the lower end of the first connecting pipe 12. A support rod 32 is fixedly installed on the inner wall of the filter cylinder 31, and a mesh cylinder 33 is fixedly installed on the support rod 32. A funnel 34 is fixedly installed at the lower end of the filter cylinder 31, and the funnel 34 is fixedly connected to the lower end of the filter cylinder 31 by bolts. The upper end of the second connecting pipe 13 is a closed structure, and several guide tubes 35 are fixedly installed on the second connecting pipe 13. The other end of each guide tube 35 is connected to the filter cylinder 31. A motor 36 is fixedly installed at the upper end of the second connecting pipe 13, and a rotatable device is installed at the lower end of the funnel 34. A shaft 37 extends through a mesh cylinder 33 at its upper end, and brush bristles 38 are fixedly mounted on the shaft 37, contacting the inner wall of the mesh cylinder 33. A connection is provided between the lower end of the shaft 37 and the upper end of the motor 36. Fresh air in the second connecting pipe 13 enters the filter cylinder 31 through the duct 35, is filtered by the mesh cylinder 33, and the filtered fresh air is introduced into the fresh air box 6 through the first connecting pipe 12. The motor 36 is started, and the drive end of the motor 36 drives the connection and the shaft 37 to rotate, thereby causing the brush bristles 38 on the shaft 37 to clean the mesh cylinder 33 and prevent the mesh cylinder 33 from becoming clogged.

[0043] In this embodiment, the connecting part includes a first square rod 39 and a connecting block 40. The first square rod 39 is fixedly installed on the drive end of the motor 36. A second square rod 41 is fixedly installed on the lower end of the shaft 37. A sliding groove 42 is formed on the side wall of the second square rod 41. A first slot is formed on the upper wall of the connecting block 40. A fourth spring 43 is fixedly installed between the lower wall of the first slot and the lower end of the second square rod 41. A slider 44 is fixedly installed on the inner side wall of the first slot. The slider 44 is slidably installed. Within the chute 42, a second slot is provided on the lower wall of the connecting block 40, and the upper end of the first square rod 39 is inserted into the second slot. When it is necessary to disassemble the funnel 34, the bolts between the funnel 34 and the filter cylinder 31 are removed, and the connecting block 40 is pushed upward, so that the connecting block 40 moves upward along the path of the chute 42 under the action of the slider 44, and compresses the fourth spring 43, thereby separating the connecting block 40 from the first square rod 39, which facilitates the disassembly of the funnel 34 and the cleaning of impurities in the funnel 34.

[0044] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0045] Example: As shown in the accompanying drawings, the second fan 9 draws outside air into the fresh air box 6 through the inlet duct 10, filters and cleans the outside air through the filter plate 7, and then guides it into the exhaust duct 11. The first fan 5 guides the filtered fresh air from the exhaust duct 11 into the cleanroom body 1. The fresh air enters the second connecting pipe 13 through the return air hole 4, is filtered by the mesh cylinder 33, and then guided into the fresh air box 6 through the first connecting pipe 12. The motor 36 is started, and the drive end of the motor 36 drives the connecting part and the shaft 37 to rotate, thereby causing the bristles 38 on the shaft 37 to clean the mesh cylinder 33, preventing the mesh cylinder 33 from becoming clogged, and then guiding the fresh air through the first connecting pipe 12 into the fresh air box 6. The connecting pipe 12 is introduced into the fresh air box 6, thereby realizing the recycling of the air source and achieving the effect of fresh air energy saving. When the filter plate 7 is installed, the filter plate 7 is inserted into the opening and pushed downward. At this time, the limiting blocks 8 on both sides of the filter plate 7 push the roller 16, and the roller drives the flip plate 15 to tilt. At this time, the spring is stretched until the limiting block 8 passes the flip plate 15, so that the flip plate 15 limits the limiting block 8. At this time, the threaded post 18 is exposed in the elongated hole 19, and the nut 21 is screwed on the threaded post 18, so that the nut 21 contacts the outer upper wall of the box 14. When it is necessary to remove the filter plate 7, push the horizontal bar 26 downward. The horizontal bar 26 pushes the moving rod 25 and squeezes the second Spring 24 continues to push the connecting rod 20 into the external threaded sleeve 27, and unscrews the nut 21 from the threaded post 18, then screws the nut 21 onto the external threaded sleeve 27. At this point, the horizontal bar 26 continues to push downwards, pushing the external threaded sleeve 27, which in turn pushes the connecting rod 20. The connecting rod 20 pushes the threaded post 18, which rotates on the flap 15. The threaded post 18 pushes the flap 15 and compresses the first spring 17, causing the flap 15 to rotate. This causes the roller 16 to move upwards and separate from the limiting block 8, thereby causing the filter plate 7 to move upwards. The nut 21 is then rotated again, causing it to move off the external threaded sleeve 27. The connecting rod separates from the external threaded sleeve 27, allowing the filter plate 7 to move out of the opening. During the process of the filter plate 7 moving out of the opening, the third spring 29 releases its elastic force to push the return rod 30. The return rod 30 pushes the filter plate 7, causing the filter plate 7 to move out of the opening. When it is necessary to disassemble the funnel 34, the bolts between the funnel 34 and the filter cylinder 31 are removed, and the connecting block 40 is pushed upward. Under the action of the slider 44, the connecting block 40 moves upward along the path of the slide groove 42 and compresses the fourth spring 43, thereby causing the connecting block 40 to separate from the first square rod 39, which facilitates the disassembly of the funnel 34 and the cleaning of impurities inside the funnel 34.

[0046] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. An energy-saving fresh air assembly for cleanrooms, comprising a cleanroom body (1), characterized in that, A top plate (2) is fixedly installed between the two inner walls of the cleanroom body (1). An inner chamber (3) is fixedly installed on the lower inner wall of the cleanroom body (1). A return air hole (4) is opened on the side wall of the inner chamber (3). The upper end of the inner chamber (3) is fixedly installed on the lower wall of the top plate (2). Several first fans (5) are fixedly installed on the top plate (2). A fresh air box (6) is fixedly installed on the upper outer wall of the cleanroom body (1). A filter plate (7) is detachably installed on the fresh air box (6). Limiting blocks (8) are fixedly installed on both sides of the filter plate (7). Limiting components are provided on the fresh air box (6) and on both sides of the filter plate (7). The filter plate (7) is positioned above the limiting components. A connecting component is provided between the two sides. A second fan (9) is provided inside the fresh air box (6) and on one side of the filter plate (7). An air inlet pipe (10) is fixedly installed on the upper wall of the fresh air box (6) and on one side of the second fan (9). An exhaust pipe (11) is fixedly installed on the side wall of the fresh air box (6). The other end of the exhaust pipe (11) passes through the clean room body (1) and is located above the top plate (2). Several first fans (5) are connected to the exhaust pipe (11). A first connecting pipe (12) and a second connecting pipe (13) are fixedly installed on the side wall of the clean room body (1) and the other side wall of the fresh air box (6), respectively. A filter component is provided between the first connecting pipe (12) and the second connecting pipe (13). The limiting component includes a pair of housings (14), the upper wall of the fresh air box (6) has an opening, the filter plate (7) is inserted into the opening, the pair of housings (14) are fixedly installed on the upper wall of the return air filter box and the fresh air filter box and located on both sides of the opening, the two sides of the housing (14) are open structures, a flap (15) is rotatably installed between the front and rear walls of the housing (14), one end of the flap (15) is exposed outside the housing (14) and a roller (16) is rotatably installed, the lower wall of the other end of the flap (15) is fixedly installed between the lower wall of the housing (14) and the lower wall of the housing (14), a first spring (17) is fixedly installed, the upper wall of the flap (15) is hinged to a threaded column (18), the upper wall of the housing (14) has an elongated hole (19), the upper end of the threaded column (18) is exposed outside the elongated hole (19) and a connecting rod (20) is fixedly installed, and a nut (21) is screwed onto the threaded column (18). A limiting plate (22) is fixedly installed on the upper wall of the flap (15) and on one side of the threaded column (18). The limiting plate (22) and the flap (15) are arranged perpendicular to each other. The connecting assembly includes a pair of cylindrical columns (23), which are fixedly installed on the upper wall of the filter plate (7). A second spring (24) is fixedly installed on the lower inner wall of the cylindrical column (23). A moving rod (25) is fixedly installed on the second spring (24). The upper end of the moving rod (25) is exposed outside the cylindrical column (23). A crossbar (26) is fixedly installed between the upper ends of the moving rod (25). An external threaded sleeve (27) is fixedly installed on the lower wall of both ends of the crossbar (26). The external threaded sleeve (27) has three guide holes. The connecting rod (20) can be inserted into the external threaded sleeve (27). The nut (21) can be screwed onto the external threaded sleeve (27).

2. The energy-saving fresh air assembly for cleanrooms according to claim 1, characterized in that, The limiting block (8) has a right-angled triangle structure, and the right-angled side of the right-angled triangle structure of the limiting block (8) is parallel to the upper wall of the filter plate (7).

3. The energy-saving fresh air assembly for cleanrooms according to claim 2, characterized in that, The space formed by the inner chamber (3) and the side wall of the cleanroom body (1) is the return air zone.

4. The energy-saving fresh air assembly for cleanrooms according to claim 3, characterized in that, The second connecting pipe (13) is connected to the return air zone.

5. The energy-saving fresh air assembly for cleanrooms according to claim 4, characterized in that, A hollow column (28) is fixedly installed on the lower outer wall of the fresh air box (6), and a third spring (29) is fixedly installed on the lower inner wall of the hollow column (28). A rebound rod (30) is fixedly installed on the third spring (29), and the upper end of the rebound rod (30) passes through the upper wall of the hollow column (28) and the lower wall of the fresh air box (6).

6. The energy-saving fresh air assembly for cleanrooms according to claim 5, characterized in that, A filter cylinder (31) is fixedly installed at the lower end of the first connecting pipe (12). A bearing rod (32) is fixedly installed on the inner wall of the filter cylinder (31). A mesh cylinder (33) is fixedly installed on the bearing rod (32). A funnel (34) is fixedly installed at the lower end of the filter cylinder (31). The funnel (34) is fixedly connected to the lower end of the filter cylinder (31) by bolts. The upper end of the second connecting pipe (13) is a closed structure. Several guide tubes are fixedly installed on the second connecting pipe (13). The tube (35) is connected to the filter cylinder (31) at the other end. The upper end of the second connecting tube (13) is fixedly installed with a motor (36). The lower end of the funnel (34) is rotatably installed with a shaft (37). The upper end of the shaft (37) passes through the mesh cylinder (33). The shaft (37) is fixedly installed with bristles (38). The bristles (38) are in contact with the inner wall of the mesh cylinder (33). A connecting part is provided between the lower end of the shaft (37) and the upper end of the motor (36).

7. The energy-saving fresh air assembly for cleanrooms according to claim 6, characterized in that, The connecting part includes a first square rod (39) and a connecting block (40). The first square rod (39) is fixedly installed on the drive end of the motor (36). A second square rod (41) is fixedly installed at the lower end of the shaft (37). A sliding groove (42) is provided on the side wall of the second square rod (41). A first slot is provided on the upper wall of the connecting block (40). A fourth spring (43) is fixedly installed between the lower wall of the first slot and the lower end of the second square rod (41). A slider (44) is fixedly installed on the inner side wall of the first slot. The slider (44) is slidably installed in the sliding groove (42). A second slot is provided on the lower wall of the connecting block (40). The upper end of the first square rod (39) is inserted into the second slot.

Images