Air flow control device

Abstract

The present invention discloses an air flow control device, comprising: a circulation system and a disinfection system controlled by a controller; the circulation system and the disinfection system share an air duct. The air flow control device provided by the present invention can be used in hospitals or places where contamination zoning is required, and air supply and disinfection are performed by the controller. Taking places where contamination zoning is required as an example, they are usually divided into clean areas (usually sterile rooms or areas that require fewer pollution sources), semi-contaminated areas (transition areas between clean areas and contaminated areas) and contaminated areas (areas with no requirements for air supply conditions, only the most basic ventilation requirements need to be met). When setting up the circulation system and the disinfection system, it is necessary to ensure that the clean area is located at the upwind port and the contaminated area is located at the downwind port. The air flow regulator can be used to circulate the air in the clean area without dead angles. The disinfection system can use atomized disinfectant to disinfect the entire area.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and more particularly to an air flow control device. Background Art

[0002] At present, separate ventilation supply is usually used for sterile places such as hospital operating rooms and biological laboratories where the spread of infectious sources may occur. Separate air supply equipment is used in places where there are no index requirements for air supply. However, for areas that need to monitor the index of air supply but the monitoring index is not as strict as that of operating rooms, that is, the so-called clean areas, it is too wasteful to equip them with a separate air supply system, and sharing the ventilation system with ordinary places cannot meet the index requirements. Therefore, how to achieve functional zoning of air supply under the condition of sharing air ducts while meeting the disinfection requirements of each area is one of the technical problems to be solved by the present invention. Therefore, it is necessary to propose an air flow control device to at least partially solve the problems existing in the prior art. Summary of the Invention

[0003] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, the present invention provides an air flow control device, comprising: a circulation system and a disinfection system controlled by a controller;

[0005] The circulation system and the disinfection system share a common air duct;

[0006] The air duct is arranged in the ceiling of the room, and an air flow regulator and a diffuser are arranged on the air duct;

[0007] The disinfection system is installed on the wall of the room and is located in the clean area;

[0008] The airflow provided by the circulation system and the disinfection system flows through the clean area, the semi-contaminated area and the contaminated area in sequence;

[0009] The air flow regulators are distributed in the clean area, semi-contaminated area and contaminated area;

[0010] The diffusers are distributed in the clean area.

[0011] Preferably, an exhaust gas treatment system is further provided in the clean area, and an exhaust port in the clean area is provided at the bottom of the wall, and the exhaust gas treatment system is electrically connected to the controller.

[0012] Preferably, the air flow regulator includes a diverter pipe and two anti-backflow air outlets; the two anti-backflow air outlets are respectively located at both ends of the diverter pipe, and a linkage mechanism is provided in the diverter pipe. The two anti-backflow air outlets are connected to the diverter pipe through the linkage mechanism, and the diverter pipe is connected to the air duct.

[0013] Preferably, the linkage mechanism consists of a drive motor and a connecting pipe; the drive motor is arranged in the diverter pipe, the connecting pipe passes through both ends of the diverter pipe and is connected to the diverter pipe axis, the side wall of the connecting pipe is provided with a flow hole and a gear ring, the flow hole and the gear ring are both located in the diverter pipe, the output end of the drive motor is engaged with the gear ring through a gear, and the two ends of the connecting pipe are respectively connected to the anti-backflow outlet.

[0014] Preferably, the anti-backflow air outlet is a circular hollow structure, and an air outlet is arranged around the outer wall of the circular hollow structure. The anti-backflow air outlet is connected to the connecting pipe through a regulating pipe, and a flow regulator is provided in the regulating pipe.

[0015] Preferably, the diffuser is composed of a fixed tube and a diffusion assembly, the top of the fixed tube is connected to the air duct, the diffusion assembly is arranged at the bottom of the fixed tube, a driving device is arranged in the fixed tube, and the output end of the driving device extends into the diffusion assembly and is connected to the diffusion assembly.

[0016] Preferably, the diffusion assembly includes a diffusion tube and a radial diffusion wheel; the diffusion tube is arranged at the bottom of the fixed tube and is connected to the fixed tube, the bottom of the diffusion tube is bell-mouth-shaped, the shape of the outer wall of the radial diffusion wheel is adapted to the bell-mouth shape of the bottom of the diffusion tube, the output end of the driving device is connected to the radial diffusion wheel, the inner wall of the diffusion tube is provided with an air guide clamp and a top cover, and the air guide clamp and the top cover selectively abut against the side wall and top of the radial diffusion wheel.

[0017] Preferably, the radial diffusion wheel includes a side wind plate, a bottom plate and a plurality of blades, the side wind plate is in a bell-mouth shape, and the outer wall of the side wind plate is adapted to the bell-mouth shape of the bottom of the diffusion tube, the blades are spirally arranged on the inner wall of the side wind plate, and extend to the bottom of the side wind plate and are connected to the bottom plate, and the output end of the driving device passes through the side wind plate and is connected to the bottom plate.

[0018] Preferably, a diverter blade is spirally provided between two adjacent blades, the extension direction of the diverter blade is consistent with the extension direction of the blade, and the bottom of the diverter blade extends to below the side wind plate.

[0019] Preferably, the diameter of the bottom plate is smaller than the diameter of the circle formed by the bottoms of the diverter blades.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] The air flow control device provided by the present invention can be used in hospitals or places where pollution zoning is required. The circulation system and disinfection system are both conventional technical means, and air supply and disinfection are performed through a controller.

[0022] Taking places that need to be zoned for contamination as an example, they are usually divided into clean areas (usually sterile rooms or areas that require fewer pollution sources), semi-contaminated areas (transition areas between clean areas and contaminated areas) and contaminated areas (areas with no requirements for air supply conditions, only the most basic ventilation requirements need to be met). When setting up the circulation system and disinfection system, it is necessary to ensure that the clean area is located at the upwind side and the contaminated area is located at the downwind side, that is, the air flow sent into the place through the air duct should first flow through the clean area, and then pass through the semi-contaminated area to the contaminated area, thereby avoiding the air from the contaminated area from flowing back to the clean area. The air flow regulator can realize the air circulation and flow direction control in each partition, and the air in the clean area can be made to enter through the air flow regulator. To achieve a dead-angle-free circulation, a sensor can be set (or not set) at the entrance of the clean area to monitor whether the door needs to be opened. When someone approaches the entrance, the controller controls the air flow regulators near the semi-contaminated area and the clean area to adjust the air supply direction. At the same time, the air flow in the clean area is increased through the air flow regulator, and the air supply volume in the semi-contaminated area is reduced, so that the air pressure in the clean area is higher than that in the semi-contaminated area. After the entrance is opened, the air flow regulator near the door of the clean area blows the air flow toward the door, thereby sending the gas in the clean area into the semi-contaminated area. The air flow regulator near the door in the semi-contaminated area is also adjusted to supply air to the semi-contaminated area, thereby reducing the risk of contamination in the clean area under the dual protection of air pressure difference and inlet air supply.

[0023] For more stringent areas such as hospitals and biological laboratories, air shower rooms need to be installed and the disinfection system must be kept open.

[0024] The disinfection system can use atomized disinfectant to disinfect the entire area (the disinfection system includes but is not limited to the atomized disinfectant method, which is only used as an example here). Different disinfection methods can be used according to different application scenarios. For example, when disinfecting a place where contaminated areas need to be divided, you can choose to stop the circulation system and start the disinfection system separately. The atomized disinfectant diffuses from the air duct through the clean area and semi-contaminated area to the contaminated area under pressure to achieve disinfection of the air duct. At the same time, because the pressure of the disinfectant is relatively low, it is difficult to form a disinfected airflow after being discharged through the air flow regulator, and it is also difficult to cover the entire clean area. Therefore, an additional diffuser is set in the clean area and is only turned on when disinfection is carried out. A small part of the disinfectant passes through the air flow regulator to disinfect it, and most of the disinfectant will diffuse from the diffuser to the clean area, so that the diffused disinfectant covers the entire clean area to achieve full-area disinfection.

[0025] Part of the disinfectant will enter the semi-contaminated area and the contaminated area along the air duct to disinfect the above two areas. If it is necessary to comprehensively disinfect the semi-contaminated area or the contaminated area, you can choose not to open the diffuser, so that the disinfectant can disinfect the air duct and all air flow regulators.

[0026] For sterile environments such as hospitals and biological research institutes, ultraviolet lamps can also be installed on the disinfection system to meet higher disinfection requirements.

[0027] The air flow control device of the present invention, and other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic structural diagram of the air flow control device of the present invention in a clean area.

[0030] Figure 2 This is a schematic diagram of the disinfection system of the air flow control equipment in the ceiling and walls of the clean area.

[0031] Figure 3 This is a structural schematic diagram of the air flow regulator in the air flow control device of the present invention.

[0032] Figure 4 for Figure 3 Schematic diagram of the structure inside the middle diversion pipe.

[0033] Figure 5 for Figure 3sectional view of .

[0034] Figure 6 for Figure 3 Schematic diagram of air outlet from the middle anti-backflow outlet (the direction of arrow indicates the direction of air flow).

[0035] Figure 7 This is a schematic structural diagram of the diffuser in the air flow control device of the present invention.

[0036] Figure 8 for Figure 7 sectional view of .

[0037] Figure 9 for Figure 7 Schematic diagram of the structure of the radial diffuser.

[0038] Figure 10 for Figure 9 A partial cross-sectional view of .

[0039] Figure 11 for Figure 7 Schematic diagram of the structure of the bottom of the radial diffuser wheel.

[0040] In the figure: 1 circulation system, 2 disinfection system, 3 air duct, 4 air flow regulator, 41 diverter pipe, 42 anti-backflow outlet, 43 drive motor, 44 connecting pipe, 45 flow hole, 46 gear ring, 5 diffuser, 51 fixed pipe, 52 diffusion pipe, 53 air guide clamp, 54 top cover, 6 radial diffuser wheel, 61 side wind plate, 62 bottom plate, 63 blade, 64 diverter blade, 7 exhaust gas treatment system. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0042] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0043] like Figures 1-11 As shown, the present invention provides an air flow control device, comprising: a circulation system 1 and a disinfection system 2 controlled by a controller;

[0044] The circulation system 1 and the disinfection system 2 share a common air duct 3;

[0045] The air duct 3 is arranged in the ceiling of the room, and an air flow regulator 4 and a diffuser 5 are provided on the air duct 3;

[0046] The disinfection system 2 is installed on the wall of the room and is located in the clean area;

[0047] The airflow provided by the circulation system 1 and the disinfection system 2 flows through the clean area, semi-contaminated area and contaminated area in sequence;

[0048] The air flow regulators 4 are distributed in the clean area, semi-contaminated area and contaminated area;

[0049] The diffusers 5 are distributed in the clean area.

[0050] An exhaust gas treatment system 7 is also provided in the clean area, and an exhaust port in the clean area is provided at the bottom of the wall. The exhaust gas treatment system 7 is electrically connected to the controller.

[0051] The working principle and beneficial effects of the above technical solution: The air flow control equipment provided by the present invention can be used in hospitals or places where pollution zoning is required. The circulation system 1 and the disinfection system 2 are both conventional technical means, and air supply and disinfection are performed through the controller.

[0052] Taking the places that need to be contaminated as an example, they are usually divided into clean areas (usually sterile rooms or areas that require fewer pollution sources), semi-contaminated areas (transition areas between clean areas and contaminated areas) and contaminated areas (areas with no requirements for air supply conditions, only the most basic ventilation requirements need to be met). When setting up the circulation system 1 and the disinfection system 2, it is necessary to ensure that the clean area is located at the upwind side and the contaminated area is located at the downwind side, that is, the air flow sent into the place through the air duct 3 should first flow through the clean area, and then pass through the semi-contaminated area to reach the contaminated area, thereby avoiding the air in the contaminated area from flowing back to the clean area. The airflow regulator 4 can realize the air circulation and flow direction control in each partition, and the air in the clean area can be made to enter through the airflow regulator 4. To achieve a dead-angle-free circulation, a sensor can be set at the entrance of the clean area (or not) to monitor whether the door needs to be opened. When someone approaches the entrance, the controller controls the air flow regulators 4 near the semi-contaminated area and the clean area to adjust the air supply direction. At the same time, the air flow in the clean area is increased through the air flow regulators 4, and the air supply volume in the semi-contaminated area is reduced, so that the air pressure in the clean area is higher than that in the semi-contaminated area. After the entrance is opened, the air flow regulator 4 near the door of the clean area blows the air flow toward the door, thereby sending the gas in the clean area into the semi-contaminated area. The air flow regulator 4 near the door in the semi-contaminated area is also adjusted to supply air to the semi-contaminated area, thereby reducing the risk of contamination of the clean area under the dual protection of air pressure difference and inlet air supply.

[0053] For more stringent areas such as hospitals and biological laboratories, it is necessary to set up an air shower room and keep the disinfection system 2 open.

[0054] The disinfection system 2 can use atomized disinfectant to disinfect the entire area (the disinfection system includes but is not limited to the atomized disinfectant method, which is only used as an example here). Different disinfection methods can be used according to different application scenarios. For example, when disinfecting a place where contaminated areas need to be divided, you can choose to stop the circulation system 1 and start the disinfection system 2 alone. The atomized disinfectant diffuses from the air duct 3 through the clean area and the semi-contaminated area to the contaminated area under pressure to achieve disinfection of the air duct 3. At the same time, because the pressure of the disinfectant is relatively small, it is difficult to form a disinfecting airflow after being discharged through the air flow regulator 4, and it is also difficult to cover the entire clean area. Therefore, an additional diffuser 5 is set in the clean area and is only turned on when disinfection is carried out. A small part of the disinfectant passes through the air flow regulator 4 to disinfect it, and most of the disinfectant will diffuse from the diffuser 5 to the clean area, so that the diffused disinfectant covers the entire clean area to achieve full-area disinfection.

[0055] Part of the disinfectant will enter the semi-contaminated area and the contaminated area along the air duct 3 to disinfect the above two areas. If it is necessary to fully disinfect the semi-contaminated area or the contaminated area, you can choose not to open the diffuser 5, so that the disinfectant can disinfect the air duct 3 and all the air flow regulators 4.

[0056] For sterile environments such as hospitals and biological research institutes, ultraviolet lamps can also be installed on the disinfection system 2 to meet higher disinfection requirements.

[0057] In one embodiment, the airflow regulator 4 includes a shunt pipe 41 and two anti-backflow air outlets 42; the two anti-backflow air outlets 42 are respectively located at the two ends of the shunt pipe 41. A linkage mechanism is provided in the shunt pipe 41. The two anti-backflow air outlets 42 are connected to the shunt pipe 41 through the linkage mechanism, and the shunt pipe 41 is connected to the air duct 3. The linkage mechanism is composed of a drive motor 43 and a connecting pipe 44; the drive motor 43 is provided in the shunt pipe 41. The connecting pipe 44 passes through both ends of the shunt pipe 41 and is connected to the shunt pipe 41 axis. The side wall of the connecting pipe 44 is provided with a flow hole 45 and a gear ring 46. The flow hole 45 and the gear ring 46 are both located in the shunt pipe 41. The output end of the drive motor 43 meshes with the gear ring 46 via a gear. The two ends of the connecting pipe 44 are respectively connected to the anti-backflow air outlet 42. The anti-backflow air outlet 42 is a circular hollow structure, and an air outlet is arranged around the outer wall of the circular hollow structure. The anti-backflow air outlet 42 is connected to the connecting pipe 44 through a regulating pipe, and a flow regulator is arranged in the regulating pipe.

[0058] The working principle and beneficial effects of the above technical solution: the air flow regulator 4 adopts a surrounding air outlet set on the side wall of the anti-backflow air outlet 42 to reduce the diameter of the air outlet as much as possible. The anti-backflow air outlet 42 is designed with a circular hollow structure, which can increase the length of the air outlet with the smallest volume, so that the air outlet area of ​​the strip-shaped surrounding air outlet is the same as the air outlet area of ​​the direct discharge. Therefore, by increasing the length of the air outlet, the width of the air outlet is reduced in direction, so that even if the air supply is stopped, it is difficult for the air in the clean area or the polluted area to flow back to the inside of the anti-backflow air outlet 42 with a circular hollow structure, because the airflow entering from the air duct 3 will first be in the diverter pipe 41, pass through the flow hole 45 to reduce the flow After the air has expanded beyond the duct 3, it reaches the anti-backflow outlet 42. Therefore, during normal air circulation, the air flow will first be diverted in the diversion pipe 41 to reduce the air pressure, and then pass through the flow hole 45 to reduce the flow area, increase the air flow rate into the connecting pipe 44, and then pass through the slender air outlet again to achieve discharge at an increased speed again. On the contrary, if the gas in the contaminated area wants to flow back to the air duct 3, it first needs extremely high pressure to enter the anti-backflow outlet 42, and then needs to pass through the flow hole 45 to reduce the flow rate, and finally flow back to the clean area at the upwind port along the air duct 3. It is difficult to meet the above harsh conditions, thereby avoiding the gas from flowing back to the air duct 3, and also avoiding the gas in the contaminated area from flowing back to the clean area when the air supply is stopped.

[0059] In one embodiment, the diffuser 5 is composed of a fixed tube 51 and a diffusion assembly. The top of the fixed tube 51 is connected to the air duct 3. The diffusion assembly is arranged at the bottom of the fixed tube 51. A drive device is arranged in the fixed tube 51. The output end of the drive device extends into the diffusion assembly and is connected to the diffusion assembly. The diffusion assembly includes a diffusion tube 52 and a radial diffusion wheel 6. The diffusion tube 52 is arranged at the bottom of the fixed tube 51 and is connected to the fixed tube 51. The bottom of the diffusion tube 52 is bell-shaped. The outer wall of the radial diffusion wheel 6 is shaped to adapt to the bell-shaped bottom of the diffusion tube 52. The output end of the drive device is connected to the radial diffusion wheel 6. The inner wall of the diffusion tube 52 is provided with an air guide ring 53 and a top cover 54. The air guide ring 53 and the top cover 54 selectively abut against the sidewall and top of the radial diffusion wheel 6. The radial diffuser wheel 6 comprises a side air plate 61, a base plate 62, and several blades 63. The side air plate 61 is bell-shaped, and its outer wall conforms to the bell-shaped bottom of the diffuser tube 52. The blades 63 are spirally arranged on the inner wall of the side air plate 61 and extend below the side air plate 61 to connect with the base plate 62. The output end of the drive device passes through the side air plate 61 and connects to the base plate 62. A diverter blade 64 is spirally arranged between two adjacent blades 63. The extension direction of the diverter blade 64 conforms to the extension direction of the blades 63, and the bottom of the diverter blade 64 extends below the side air plate 61. The diameter of the base plate 62 is smaller than the diameter of the circle enclosed by the bottom of the diverter blade 64.

[0060] The working principle and beneficial effects of the above technical solution: Depending on the use environment, the configuration of the drive device in the fixed tube 51 is also different. In the use environment where the disinfection system 2 needs to be always on, the drive device can only be provided with a device for driving the radial diffusion wheel 6 to move up and down. In the environment where rapid disinfection of a large area is required, the drive device is equipped with a device for driving the radial diffusion wheel 6 to move up and down, and also needs to be equipped with a device for driving the radial diffusion wheel 6 to rotate. The above-mentioned device for driving the radial diffusion wheel 6 to move up and down and rotate can be a rotary motor with a telescopic rod, or it can be a drive device composed of existing technologies that can achieve the above-mentioned two functions.

[0061] Taking an environment that is not often used and requires large-scale rapid disinfection as an example, when disinfection is not performed, the outer wall of the bell-mouth section at the bottom of the side wind plate 61 abuts against the inner wall of the bell-mouth section at the bottom of the diffuser 52, sealing the side wall of the radial diffusion wheel 6. At this time, the air guide clamp 53 located on the inner wall of the vertical section of the diffuser 52 is clamped and limited at the junction of the bell-mouth section and the vertical section of the side wind plate 61, and the top cover 54 abuts against the top of the vertical section of the side wind plate 61, sealing the top of the radial diffusion wheel 6, thereby preventing the airflow from flowing out of the diffuser 5 from affecting the air flow direction, and also preventing gas backflow.

[0062] When a large area needs to be quickly disinfected, the driving device drives the radial diffusion wheel 6 to move downward, the vertical section of the side wind plate 61 moves relative to the air guide ring 53, and the top cover 54 is unsealed. Because the circulation system 1 is stopped, the atomized disinfectant produced by the disinfection system 2 will enter the diffusion tube 52 from the fixed tube 51, and a part of the disinfectant will enter the umbrella-shaped flow channel formed by the trumpet at the bottom of the diffusion tube 52 and the trumpet of the side wind plate 61 through the air guide ring 53. The disinfectant will diffuse in an umbrella shape to the surroundings. The air guide ring 53 can also be provided with inclined blades to generate a cyclone for the disinfectant entering the umbrella-shaped flow channel. The other part will be guided by the blades 63 to form a cyclone and diffuse radially along the bottom plate 62, thereby providing lateral thrust for the vertically downward disinfectant flowing out of the umbrella-shaped flow channel, increasing the diffusion area of ​​the disinfectant flowing out of the umbrella-shaped flow channel. If the disinfection system 2 is normally open, just keep the diffuser 5 normally open.

[0063] Furthermore, in order to increase the diffusion area of ​​the disinfectant flowing out of the umbrella-shaped flow channel, the driving device can drive the radial diffusion wheel 6 to rotate, so that the disinfectant flowing radially out of the bottom plate 62 has a higher wind speed, thereby making the umbrella-shaped diffused disinfectant have a larger diffusion area.

[0064] Furthermore, a diverter blade 64 is provided on the blade 62, and the bottom edge of the diverter blade 64 is located above the bottom plate 62, so that the disinfectant can be divided into two flow directions after entering the side wind plate 61, such as Figure 10As shown, a diffusion channel is formed between the outer wall of the diverter blade 64 and the inner wall of the side wind plate 61, and a bottom channel is formed between the inner wall of the diverter blade 64 and the two blades 62 connected thereto. Therefore, after the disinfectant enters the diffusion component, it will enter the umbrella-shaped channel, the diffusion channel and the bottom channel respectively. The disinfectant flowing out of the diffusion channel and the bottom channel is in the radial direction of the bottom plate 62. The diffusion channel can provide radial thrust for the disinfectant flowing out of the umbrella-shaped channel, so that the disinfectant flowing out of the umbrella-shaped channel has a larger diffusion area. At the same time, the disinfectant flowing out of the bottom channel can provide radial force for the disinfectant in the diffusion channel while covering the area below the diffuser 5, thereby avoiding the occurrence of a dead corner for disinfection, and thus making the setting distance between the two diffusers 5 farther, and using fewer diffusers 5 to cover the entire clean area. At the same time, due to the reduction in the number of diffusers 5, the pressure of the disinfectant entering the diffuser 5 is also greater than that of the diffuser 5 without the diverter blade 64, the diffusion range is larger, and the particle size of the diffused disinfectant is more uniform and fine.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0067] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An air flow control device, characterized in that: include: A circulation system (1) and a disinfection system (2) controlled by a controller; The circulation system (1) and the disinfection system (2) share an air duct (3); The air duct (3) is arranged in the ceiling of the room, and an air flow regulator (4) and a diffuser (5) are arranged on the air duct (3); The disinfection system (2) is installed on the wall of the room and is located in the clean area; The airflows provided by the circulation system (1) and the disinfection system (2) flow through the clean area, the semi-contaminated area and the contaminated area in sequence; The air flow regulator (4) is distributed in the clean area, the semi-contaminated area and the contaminated area; The diffuser (5) is distributed in the clean area; The diffuser (5) is composed of a fixed tube (51) and a diffusion assembly, the top of the fixed tube (51) is communicated with the air duct (3), the diffusion assembly is arranged at the bottom of the fixed tube (51), a driving device is arranged in the fixed tube (51), and the output end of the driving device extends into the diffusion assembly and is connected to the diffusion assembly; The diffusion assembly comprises a diffusion tube (52) and a radial diffusion wheel (6); the diffusion tube (52) is arranged at the bottom of the fixed tube (51) and is in communication with the fixed tube (51); the bottom of the diffusion tube (52) is in a bell-mouth shape; the shape of the outer wall of the radial diffusion wheel (6) is adapted to the bell-mouth shape of the bottom of the diffusion tube (52); the output end of the driving device is connected to the radial diffusion wheel (6); the inner wall of the diffusion tube (52) is provided with an air guide ring (53) and a top cover (54); the air guide ring (53) and the top cover (54) selectively abut against the side wall and the top of the radial diffusion wheel (6); The radial diffusion wheel (6) comprises a side wind plate (61), a bottom plate (62) and a plurality of blades (63); the side wind plate (61) is in a bell-mouth shape, and the outer wall of the side wind plate (61) is adapted to the bell-mouth shape of the bottom of the diffusion tube (52); the blades (63) are spirally arranged on the inner wall of the side wind plate (61) and extend to the bottom of the side wind plate (61) to be connected to the bottom plate (62); the output end of the driving device passes through the side wind plate (61) and is connected to the bottom plate (62); A diverter blade (64) is spirally arranged between two adjacent blades (63), the extension direction of the diverter blade (64) is adapted to the extension direction of the blade (63), and the bottom of the diverter blade (64) extends to below the side wind plate (61); The diameter of the bottom plate (62) is smaller than the diameter of the circle formed by the bottoms of the splitter blades (64).

2. The air flow control device according to claim 1, characterized in that An exhaust gas treatment system (7) is also provided in the clean area, and an exhaust port in the clean area is provided at the bottom of the wall. The exhaust gas treatment system (7) is electrically connected to the controller.

3. The air flow control device according to claim 1, characterized in that The airflow regulator (4) comprises a shunt pipe (41) and two anti-backflow air outlets (42); the two anti-backflow air outlets (42) are respectively located at two ends of the shunt pipe (41); a linkage mechanism is provided in the shunt pipe (41); the two anti-backflow air outlets (42) are connected to the shunt pipe (41) via the linkage mechanism, and the shunt pipe (41) is connected to the air duct (3).

4. The air flow control device according to claim 3, characterized in that The linkage mechanism is composed of a driving motor (43) and a connecting pipe (44); the driving motor (43) is arranged in the shunt pipe (41); the connecting pipe (44) passes through both ends of the shunt pipe (41) and is connected to the shunt pipe (41) axis; a flow hole (45) and a gear ring (46) are provided on the side wall of the connecting pipe (44); the flow hole (45) and the gear ring (46) are both located in the shunt pipe (41); the output end of the driving motor (43) is engaged with the gear ring (46) through a gear; and the two ends of the connecting pipe (44) are respectively connected to the anti-backflow outlet (42).

5. The air flow control device according to claim 4, characterized in that The anti-backflow air outlet (42) is a circular hollow structure, and an air outlet is arranged around the outer wall of the circular hollow structure. The anti-backflow air outlet (42) is connected to the connecting pipe (44) through a regulating pipe, and a flow regulator is arranged in the regulating pipe.

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