Clean air supply device

Abstract

The application discloses a clean air supply device, which comprises at least four upper and lower open outer housings, an installation outer frame is arranged in the outer housings, a plurality of installation grooves are formed in the upper end surface of the installation outer frame, a filter plate frame with a filter module is embedded in the installation grooves and is in plug-in connection with the installation grooves, a filter gas hole is formed in the side surface of the filter module area in the installation outer frame and is vertically through the installation grooves, so that the gas outside the installation outer frame can pass through the filter module and enter the cavity, the filter plate frame is provided with a gas passing hole at the middle position between the top plate and the inner top plate, a plurality of gas holes are formed in the air distribution pipe at intervals, so that the outer sleeve pipe is in communication with the air pipe through the gas holes, and the inner diameter of the gas holes gradually increases in the direction away from the connection position between the air pipe and the air distribution pipe. The application not only facilitates the multiple plug-in replacement of the filter plate frame, but also avoids the offset and dislocation between the filter plate frame and the installation outer frame, and improves the cleanliness and stability of the air supply in the long-term use process.

Description

Technical Field

[0001] This invention relates to the field of medical ceilings, and particularly to a clean air supply device. Background Technology

[0002] As vital departments within hospitals, clean operating rooms and clean wards have stringent requirements for their indoor environment. The air conditioning systems in clean operating rooms typically employ a combination of fresh air handling units, recirculating air handling units, and supply air ceilings. Current technology often integrates recirculating air handling units with supply air ceilings equipped with high-efficiency filters. During long-term use, the filters need to be replaced to maintain the cleanliness of the indoor environment; however, frequent filter replacements can negatively impact the cleanliness and stability of the supplied air. Summary of the Invention

[0003] The main objective of this invention is to provide a clean air supply device that facilitates multiple insertions and removals of the filter plate frame, avoids misalignment between the filter plate frame and the mounting frame, and improves the cleanliness and stability of the air supply during long-term use.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a clean air supply device, comprising at least four outer shells with openings at the top and bottom, wherein each outer shell comprises two parallel and oppositely arranged first side plates and two parallel and oppositely arranged second side plates, wherein the first side plates and the second side plates are spaced apart and connected end to end to form the outer shell, wherein the length of the first side plate is greater than the length of the second side plate, and every four outer shells are connected end to end to form a ceiling unit with a square mounting hole in the center;

[0005] A top plate is installed at the upper opening of the outer shell, a diffuser is installed at the lower opening of the outer shell, an air inlet is opened on one side surface of the outer shell, an outer frame is provided inside the outer shell, the lower end face of the outer frame is sealed to the diffuser, and an inner top plate is sealed to the upper part of the outer frame, thereby forming a cavity between the diffuser and the inner top plate.

[0006] The upper surface of the mounting frame has several mounting slots. A filter plate frame with a filter module is embedded in the mounting slot and is pluggably connected to the mounting slot. The side surface of the mounting frame containing the filter module has a filter hole that is perpendicular to the mounting slot, so that gas outside the mounting frame can enter the cavity through the filter module. The filter plate frame is provided with an air passage hole located between the top plate and the inner top plate.

[0007] Each of the two side surfaces of the filter plate frame embedded in the mounting frame area is filled with a sealing airbag between itself and the mounting frame. The sealing airbags are arranged in a ring around the periphery of the filter module. Both sealing airbags are connected to an air pipe set inside the filter plate frame. The top of the filter plate frame extends upward from inside the mounting frame and protrudes from the top plate. The end of the air pipe away from the sealing airbag extends to the top of the filter plate frame and is provided with an airtight cover.

[0008] Two parallel and oppositely arranged sealing airbags are connected by several branch pipes that penetrate the filter plate frame. The branch pipes are evenly spaced along the circumference of the sealing airbag. The sealing airbag includes an outer sleeve and an air distribution pipe located inside the outer sleeve. The air distribution pipe is connected to the air pipe. The air distribution pipe has several air holes spaced apart, so that the outer sleeve is connected to the air pipe through the air holes. The inner diameter of the air holes gradually increases in the direction away from the connection between the air pipe and the air distribution pipe.

[0009] The following are further improvements to the above technical solution:

[0010] 1. In the above scheme, a one-way valve is installed on the air pipe.

[0011] 2. In the above scheme, the number of bronchi is 4 to 8.

[0012] 3. In the above scheme, the top plate has a slot that mates with the filter plate frame.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0014] 1. The clean air supply device of the present invention has a sealing airbag between each of the two side surfaces of the filter plate frame embedded in the mounting frame area and the mounting frame. The sealing airbags are arranged in a ring around the filter module. Both sealing airbags are connected to an air pipe disposed inside the filter plate frame. The top of the filter plate frame extends upward from inside the mounting frame and protrudes from the top plate. The end of the air pipe away from the sealing airbag extends to the top of the filter plate frame. This further improves the sealing effect between the filter plate frame and the mounting frame, facilitates multiple insertions and replacements of the filter plate frame, and allows for repeated use and replacements of the filter plate frame over long periods of time. It maintains the cleanliness and stability of the supplied air at all times. Furthermore, each of the two side surfaces of the filter plate frame embedded in the installation frame area is filled with a sealing airbag between itself and the installation frame. The two parallel and opposite sealing airbags are connected by several branch pipes that penetrate the filter plate frame. The branch pipes are evenly spaced along the circumference of the sealing airbags. The connection between the two sealing airbags through the multiple branch pipes ensures the uniformity and consistency of the inflation and deflation of the two sealing airbags, avoids the displacement and misalignment between the filter plate frame and the installation frame caused by uneven force during inflation and deflation, and further improves the cleanliness and stability of the supplied air during long-term use.

[0015] 2. The clean air supply device of the present invention includes a sealing airbag located between the filter plate frame and the mounting frame, comprising an outer sleeve and an air distribution pipe located inside the outer sleeve. The air distribution pipe is connected to the air pipe, and a plurality of air holes are spaced apart on the air distribution pipe, so that the outer sleeve is connected to the air pipe through the air holes. This ensures uniform and stable inflation and deflation of the sealing airbag and avoids excessive pressure changes during inflation and deflation that could cause vibration of the ceiling unit, thereby improving the structural stability of the ceiling unit during long-term use. Furthermore, the air distribution pipe is spaced apart on the air holes, and the inner diameter of the air holes gradually increases in the direction away from the connection between the air pipe and the air distribution pipe, further improving the uniformity and stability of inflation and deflation of the sealing airbag, and improving the consistency of air supply quality and structural stability of the ceiling unit during long-term use. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the clean air supply equipment of the present invention. Figure 1 ;

[0017] Appendix Figure 2 This is a schematic diagram of the clean air supply equipment of the present invention. Figure 2 ;

[0018] Appendix Figure 3 This is a schematic diagram of the clean air supply equipment of the present invention;

[0019] Appendix Figure 4 This is an internal schematic diagram of the filter plate frame and the mounting frame in the clean air supply equipment of the present invention;

[0020] Appendix Figure 5 This is a partial cross-sectional schematic diagram of the clean air supply device of the present invention;

[0021] Appendix Figure 6 for Figure 5 Enlarged view of the structure at point A;

[0022] Appendix Figure 7 for Figure 5 Enlarged view of the structure at point B;

[0023] Appendix Figure 8 This is an enlarged view of the sealing airbag and bronchus structure of the clean air supply device of the present invention;

[0024] Appendix Figure 9 This is a schematic diagram of the mounting groove and air filter holes for mounting the outer frame in this invention;

[0025] Appendix Figure 10 This is a partial cross-sectional view of the sealing airbag in this invention;

[0026] Appendix Figure 11 This is a cross-sectional view of the sealing airbag of the clean air supply device of the present invention.

[0027] In the above attached figures: 1. Outer shell; 101. First side plate; 102. Second side plate; 103. Square mounting hole; 2. Diffuser plate; 3. Top plate; 5. Filter plate frame; 7. Airtight cover; 8. One-way valve; 9. Air passage hole; 10. Sealing airbag; 11. Air pipe; 12. Filter module; 13. Inner top plate; 14. Mounting frame; 16. Sealing plate; 17. Square mounting groove; 20. Air inlet; 21. Cavity; 22. Mounting groove; 23. Air filter hole; 24. Outer sleeve; 25. Air distribution pipe; 26. Air hole; 27. Branch pipe. Implementation

[0028] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0029] Example 1: A clean air supply device includes at least four outer shells 1 with openings at the top and bottom. Each outer shell 1 includes two parallel and opposite first side plates 101 and two parallel and opposite second side plates 102. The first side plates 101 and the second side plates 102 are spaced apart and connected end to end to form the outer shell 1. The length of the first side plate 101 is greater than the length of the second side plate 102. Every four outer shells 1 are connected end to end to form a ceiling unit with a square mounting hole 103 in the center.

[0030] A top plate 3 is installed at the upper opening of the outer shell 1, and a diffuser plate 2 is installed at the lower opening of the outer shell 1. An air inlet 20 is opened on one side surface of the outer shell 1. An outer frame 14 is provided inside the outer shell 1. The lower end face of the outer frame 14 is sealed to the diffuser plate 2. An inner top plate 13 is sealed to the upper part of the outer frame 14, thereby forming a cavity 21 between the diffuser plate 2 and the inner top plate 13. The inner top plate 13 can be a filter plate.

[0031] The upper surface of the mounting frame 14 has several mounting slots 22. A filter plate frame 5 with a filter module 12 is embedded in the mounting slot 22 and is pluggably connected to the mounting slot 22. The side surface of the mounting frame 14 containing the area of ​​the filter module 12 has filter holes 23 that are perpendicular to the mounting slot 22, so that the gas outside the mounting frame 14 can enter the cavity 21 through the filter module 12.

[0032] Each of the two side surfaces of the filter plate frame 5 embedded in the mounting frame 14 area is filled with a sealing airbag 10 between itself and the mounting frame 14. The sealing airbag 10 is arranged in a ring around the filter module 12. Both sealing airbags 10 are connected to an air pipe 11 disposed in the filter plate frame 5. The top of the filter plate frame 5 extends upward from the mounting frame 14 and protrudes from the top plate 3. The end of the air pipe 11 away from the sealing airbag 10 extends to the top of the filter plate frame 5.

[0033] Two parallel and oppositely arranged sealing airbags 10 are connected by a plurality of branch pipes 27 that penetrate the filter plate frame 5, and the plurality of branch pipes 27 are arranged at equal intervals along the circumference of the sealing airbags 10.

[0034] The sealing airbag 10 includes an outer tube 24 and an air distribution tube 25 located inside the outer tube 24. The air distribution tube 25 is connected to the air tube 11. The air distribution tube 25 is provided with a plurality of air holes 26 spaced apart, so that the outer tube 24 is connected to the air tube 11 through the air holes 26. The inner diameter of the air holes 26 gradually increases in the direction away from the connection between the air tube 11 and the air distribution tube 25.

[0035] A one-way valve 8 is provided on the air pipe 11, and an airtight cover 7 is provided at the end of the air pipe 11 that extends to the top of the filter plate frame 5.

[0036] The filter plate frame 5 is provided with an air passage 9 located between the top plate 3 and the inner top plate 13.

[0037] The number of bronchi 27 mentioned above is 4.

[0038] The top plate 3 has a slot that mates with the filter plate frame 5.

[0039] Example 2: A clean air supply device includes at least four outer shells 1 with openings at the top and bottom. Each outer shell 1 includes two parallel and opposite first side plates 101 and two parallel and opposite second side plates 102. The first side plates 101 and the second side plates 102 are spaced apart and connected end to end to form the outer shell 1. The length of the first side plate 101 is greater than the length of the second side plate 102. Every four outer shells 1 are connected end to end to form a ceiling unit with a square mounting hole 103 in the center.

[0040] A top plate 3 is installed at the upper opening of the outer shell 1, a diffuser 2 is installed at the lower opening of the outer shell 1, an air inlet 20 is opened on one side surface of the outer shell 1, an outer frame 14 is provided inside the outer shell 1, the lower end face of the outer frame 14 is sealed to the diffuser 2, and an inner top plate 13 is sealed to the upper part of the outer frame 14, thereby forming a cavity 21 between the diffuser 2 and the inner top plate 13;

[0041] The upper surface of the mounting frame 14 has several mounting slots 22. A filter plate frame 5 with a filter module 12 is embedded in the mounting slot 22 and is pluggably connected to the mounting slot 22. The side surface of the mounting frame 14 containing the area of ​​the filter module 12 has filter holes 23 that are perpendicular to the mounting slot 22, so that the gas outside the mounting frame 14 can enter the cavity 21 through the filter module 12.

[0042] Each of the two side surfaces of the filter plate frame 5 embedded in the mounting frame 14 area is filled with a sealing airbag 10 between itself and the mounting frame 14. The sealing airbag 10 is arranged in a ring around the filter module 12. Both sealing airbags 10 are connected to an air pipe 11 disposed in the filter plate frame 5. The top of the filter plate frame 5 extends upward from the mounting frame 14 and protrudes from the top plate 3. The end of the air pipe 11 away from the sealing airbag 10 extends to the top of the filter plate frame 5.

[0043] Two parallel and oppositely arranged sealing airbags 10 are connected by a plurality of branch pipes 27 that penetrate the filter plate frame 5, and the plurality of branch pipes 27 are arranged at equal intervals along the circumference of the sealing airbags 10.

[0044] The sealing airbag 10 includes an outer tube 24 and an air distribution tube 25 located inside the outer tube 24. The air distribution tube 25 is connected to the air tube 11. The air distribution tube 25 is provided with a plurality of air holes 26 spaced apart, so that the outer tube 24 is connected to the air tube 11 through the air holes 26. The inner diameter of the air holes 26 gradually increases in the direction away from the connection between the air tube 11 and the air distribution tube 25.

[0045] In the four outer shells 1 that form the ceiling unit, a second side plate 102 of any one outer shell 1 is connected to one end of a first side plate 101 of the adjacent outer shell 1.

[0046] Each of the above-mentioned outer casings 1 has an air inlet 20 that is connected to the above-mentioned square mounting hole 103.

[0047] An air sealing plate 16 is installed at the aforementioned air inlet 20.

[0048] The number of bronchi 27 mentioned above is 8.

[0049] Working principle: The purified air enters the outer shell 1 through the air inlet 20, then passes through the filter module 12 and enters the cavity 21 formed by the filter module 12, the diffuser plate 2, and the inner top plate 13. The air undergoes the final filtration through the filter module 12. After filtration, the air enters the cavity 21 under static pressure. After static pressure, the airflow is balanced by the flow equalization membrane. After equalization, the airflow is dispersed into the operating room by the diffuser plate 2.

[0050] When the filter module 12 needs to be replaced, first unscrew the airtight cover 7, then open the one-way valve 8 through the metal tube to release the air, and release the air in the sealing airbag 10 through the air pipe 11, so that the sealing airbag 10 retracts into the filter plate frame 5. Then remove the fixing bolts, and the filter plate frame 5 and filter module 12 can be pulled out as a whole and the filter module 12 can be replaced. After replacing the filter module 12, insert the filter plate frame 5 back into the mounting frame 14, and inject air into the sealing airbag 10 through the air pipe 11 to make the sealing airbag 10 full and fit and seal with the mounting frame 14. Prevent air from flowing out through the one-way valve 8, and then reinforce the seal through the airtight cover 7. Finally, screw in the fixing bolts and lock them through the bolt holes to complete the seal. When the outer shell 1 is not fully filled, the excess space is sealed by the sealing plate 16.

[0051] When the above-mentioned clean air supply equipment is used, it not only further improves the sealing effect between the filter plate frame and the mounting frame, but also facilitates the repeated insertion and removal of the filter plate frame, and can maintain the cleanliness and stability of the air supply during long-term use and repeated replacement of the filter plate frame.

[0052] Furthermore, each of the two side surfaces of the filter plate frame embedded in the installation frame area is filled with a sealing airbag between itself and the installation frame. The two parallel and opposite sealing airbags are connected by several branch pipes that penetrate the filter plate frame. The branch pipes are evenly spaced along the circumference of the sealing airbags. The connection between the two sealing airbags through the multiple branch pipes ensures the uniformity and consistency of the inflation and deflation of the two sealing airbags, avoids the displacement and misalignment between the filter plate frame and the installation frame caused by uneven force during inflation and deflation, and further improves the cleanliness and stability of the air supply during long-term use.

[0053] Furthermore, the sealing airbag located between the filter plate frame and the mounting frame includes an outer sleeve and an air distribution pipe located inside the outer sleeve. The air distribution pipe is connected to the air pipe, and a number of air holes are spaced apart on the air distribution pipe so that the outer sleeve is connected to the air pipe through the air holes. This ensures that the inflation and deflation of the sealing airbag is uniform and stable, and also avoids excessive pressure changes during inflation and deflation that could cause the ceiling unit to vibrate, thereby improving the structural stability of the ceiling unit during long-term use.

[0054] Furthermore, the air distribution pipe is provided with several air holes spaced apart. The inner diameter of the air holes gradually increases in the direction away from the connection between the air pipe and the air distribution pipe, which further improves the uniformity and stability of the inflation and deflation of the sealing airbag, and improves the consistency of air supply quality and structural stability of the ceiling unit during long-term use.

[0055] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A clean air supply device, comprising an outer casing (1) with at least four openings at the top and bottom, characterized in that: The outer shell (1) includes two parallel and opposite first side plates (101) and two parallel and opposite second side plates (102). The first side plates (101) and the second side plates (102) are spaced apart and connected end to end to form the outer shell (1). The length of the first side plate (101) is greater than the length of the second side plate (102). Every four outer shells (1) are connected end to end to form a ceiling unit with a square mounting hole (103) in the center. A top plate (3) is installed at the upper opening of the outer shell (1), a diffuser plate (2) is installed at the lower opening of the outer shell (1), an air inlet (20) is opened on one side surface of the outer shell (1), an outer frame (14) is provided inside the outer shell (1), the lower end face of the outer frame (14) is sealed to the diffuser plate (2), and an inner top plate (13) is sealed to the upper part of the outer frame (14), thereby forming a cavity (21) between the diffuser plate (2) and the inner top plate (13). The upper surface of the mounting frame (14) has several mounting slots (22). A filter plate frame (5) with a filter module (12) is embedded in the mounting slot (22) and is pluggably connected to the mounting slot (22). The side surface of the mounting frame (14) containing the area of ​​the filter module (12) has a filter hole (23) that is perpendicular to the mounting slot (22), so that the gas outside the mounting frame (14) can enter the cavity (21) through the filter module (12). The filter plate frame (5) is provided with an air passage (9) at the middle of the top plate (3) and the inner top plate (13). The filter plate frame (5) is embedded in the installation frame (14) area. Each of the two side surfaces of the filter plate frame (5) is filled with a sealing airbag (10) between itself and the installation frame (14). The sealing airbag (10) is arranged in a ring around the filter module (12). Both sealing airbags (10) are connected to an air pipe (11) arranged in the filter plate frame (5). The top of the filter plate frame (5) extends upward from the installation frame (14) and protrudes from the top plate (3). The end of the air pipe (11) away from the sealing airbag (10) extends to the top of the filter plate frame (5) and is provided with an airtight cover (7). Two parallel and oppositely arranged sealing airbags (10) are connected by a number of branch pipes (27) that penetrate the filter plate frame (5). The number of branch pipes (27) are arranged at equal intervals along the circumference of the sealing airbag (10). The sealing airbag (10) includes an outer tube (24) and an air distribution pipe (25) located inside the outer tube (24). The air distribution pipe (25) is connected to the air pipe (11). A number of air holes (26) are spaced apart on the air distribution pipe (25) so that the outer tube (24) is connected to the air pipe (11) through the air holes (26). The inner diameter of the air holes (26) gradually increases in the direction away from the connection between the air pipe (11) and the air distribution pipe (25).

2. The clean air supply equipment according to claim 1, characterized in that: A one-way valve (8) is provided on the air pipe (11).

3. The clean air supply equipment according to claim 1, characterized in that: The number of the bronchi (27) is 4 to 8.

4. The clean air supply equipment according to claim 1, characterized in that: The top plate (3) has a slot that mates with the filter plate frame (5).

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