Ground suction chimney effect air purification system and purification method

Abstract

The present invention discloses a ground suction chimney effect air purification system and purification method, which includes a ground air settling system, a chimney structure is connected above the ground air settling system, the chimney structure includes a lower pipe section and an upper pipe section, and an expansion section is arranged between the lower pipe section and the upper pipe section; an air extraction and control system, a sterilization purification module and a sampling device are arranged inside the chimney structure. The purification system can force air to be sucked underground for the gas that may contain infectious viruses exhaled by personnel, greatly shorten the lateral diffusion distance and residence time of the virus aerosol in the environment, and filter and sterilize the captured air for purification, remove infectious disease components in the air, discharge clean air to the outside, and reduce the spread of infectious diseases; at the same time, the sampling device inside the chimney collects external air samples for monitoring the infectious disease status in the air environment, is suitable for installation in large public places, and effectively blocks the spread of viruses between close-range personnel in densely populated areas.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental purification, and specifically comprises a ground-suction chimney-effect air purification system and a purification method. Background Art

[0002] There is no effective treatment technology to actively reduce the virus concentration in the external environment for infectious viruses (bacteria) suspended in the air, both at home and abroad. Spray trucks are often used to spray prepared disinfectants on city streets to disinfect the air. However, since the sprayed disinfectants easily dissipate in the air, their effect on air disinfection is only a drop in the bucket. If the disinfectants are not prepared properly, spraying them in the air can easily affect the health of residents.

[0003] Since the outdoor area is connected and the air circulation range is extremely large, it is impossible and uneconomical to effectively disinfect the air in the entire large area (county, district, street). Therefore, it is feasible to consider uninterrupted air purification in specific areas, such as stations, parks, scenic spots and other areas with large traffic flow. The over-the-ground suction chimney effect air purification system provided by the present invention can force the sedimentation, capture, sterilization and purification of infectious viruses (bacteria) in the air within a certain area around it, thereby realizing active protection against infectious diseases in the public environment; in periods without epidemics, it can be operated as an ordinary air purification device, and air samples can be collected during operation, which is of great significance for monitoring the spread and distribution of infectious viruses in the air in local areas. The data obtained are convenient for the epidemic prevention department to deploy and respond in advance during the high incidence season of respiratory infectious diseases to avoid large-scale infectious disease outbreaks. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a ground-suction chimney effect air purification system and a purification method. The purification system can force air to be sucked underground for gases exhaled by people that may contain infectious viruses, greatly shortening the lateral diffusion distance and residence time of virus aerosols in the environment, and filtering, sterilizing and other purification treatments are performed on the captured air to remove a large number of infectious disease components in the air, and clean air is discharged to the outside to reduce the spread of infectious diseases. At the same time, the sampling device inside the chimney collects external air samples for monitoring the infectious disease status in the air environment. The system is suitable for installation in large public places and can effectively block the spread of viruses between close-range people in densely populated areas.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a ground-suction chimney effect air purification system, which includes a ground air sedimentation system, the ground air sedimentation system includes a plurality of air intake grille holes and an air intake cover opened on the ground, the air intake grille holes are connected to a hollow air intake pipe network arranged in the ground below; the air intake pipe is connected to the underground drainage ditch, an interception net is arranged at the connection, and a one-way valve is arranged above the interception net; a chimney structure is connected above the ground air sedimentation system, the chimney structure includes a lower pipe section and an upper pipe section, and an expansion section is arranged between the lower pipe section and the upper pipe section; a shutter is opened on the side surface of the lower pipe section for air intake, and the bottom of the lower pipe section is connected to the air intake pipe network; an exhaust and control system, a sterilization and purification module and a sampling device are arranged inside the chimney structure.

[0006] The air extraction and control system comprises an air inlet valve arranged in the lower pipe section, an air outlet valve arranged in the upper pipe section, and a fan arranged in the expansion section.

[0007] The air extraction and control system also includes an environment sensing device, which includes an infrared sensor and a humidity sensor.

[0008] The sterilization and purification module includes a primary dust collector and a sterilization filter.

[0009] The sampling device comprises an air inlet sampler arranged between the air inlet valve and the primary dust collector, and an air outlet sampler arranged below the air outlet valve.

[0010] An air rectifying grid is arranged above the surface air extraction port, the air rectifying grid is parallel to the ground, and the direction of the rectified airflow is perpendicular to the ground.

[0011] A waterproof cover is connected above the air outlet at the top of the upper pipe section, and a lightning rod is arranged on the top of the waterproof cover.

[0012] The air inlet valve and the air outlet valve are both electrically controlled valves. The environmental sensor device, the fan, the air inlet valve and the air outlet valve are all connected to a control device, which includes a PLC controller and related circuits.

[0013] The purification method of the ground suction chimney effect air purification system as described above comprises the following steps:

[0014] S1, the environmental sensing device monitors the use environment in real time. When someone passes by or stays in the environment, the infrared sensor in the environmental sensing device outputs a signal, the control device issues a command, and the system enters the working state: first open the air inlet valve and the air outlet valve, and then start the fan; after the person leaves, continue to run for a while, and then close the fan, the air inlet valve and the air outlet valve one after another;

[0015] S2, under the combined effect of the fan exhaust pressure and the chimney exhaust effect, the air near the chimney structure enters the air intake network through multiple air intake grille holes on the ground and the air intake cover on the ground surface, and the air intake network and the shutters collect and inhale the gas into the lower pipe section of the chimney structure;

[0016] S3, the gas rises through the air inlet valve, and is sampled by the air inlet sampler, and then is initially filtered by the primary dust collector. The air after the initial filtration rises to the sterilization filter of the expansion section for sterilization filtration. The filtered air rises through the air outlet sampler for sample collection, and then is discharged through the air outlet valve to complete the purification process;

[0017] S4, in rainy and snowy weather, the humidity sensor of the environmental sensing device outputs a signal in real time, and the control device issues a closing command to close the air inlet valve and the air outlet valve, so that the air flow channel between the inside of the chimney structure and the external environment is closed; rainwater flows from the air intake grille holes into the drainage ditch below the surface.

[0018] A ground-suction chimney effect air purification system comprises a ground air settling system, the ground air settling system comprises a plurality of air intake grille holes and an air intake cover opened on the ground, the air intake grille holes are connected with a hollow air intake pipe network arranged in the ground surface below; the air intake pipe network is connected with an underground drainage ditch, an interception net is arranged at the connection, and a one-way valve is arranged above the interception net; a chimney structure is connected above the ground air settling system, the chimney structure comprises a lower pipe section and an upper pipe section, an expansion section is arranged between the lower pipe section and the upper pipe section; a shutter is opened on the side surface of the lower pipe section for air intake, and the bottom of the lower pipe section is connected with the air intake pipe network; an air extraction and control system, a sterilization and purification module and a sampling device are arranged inside the chimney structure. The purification system can forcefully draw air underground for gases exhaled by people that may contain infectious viruses, greatly shortening the lateral diffusion distance and residence time of viral aerosols in the environment. It can also filter and sterilize the captured air to remove a large number of infectious components in the air, discharge clean air to the outside, and reduce the spread of infectious diseases. At the same time, the sampling device inside the chimney collects external air samples for monitoring the status of infectious diseases in the air environment. It is suitable for installation in large public places and can effectively block the spread of viruses between close-range people in crowded areas.

[0019] In the preferred solution, the air extraction and control system includes an air inlet valve arranged in the lower pipe section and an air outlet valve arranged in the upper pipe section, as well as a fan arranged at the connection between the upper pipe section and the expansion section. The structure is simple. When in use, the air intake mode of the air intake grille hole on the ground does not affect the ground landscape and the walking of people, but it is easy to get into water. Rainwater and small debris flowing in from the air intake grille hole are discharged through the drainage ditch; the interception net prevents large rodent pests from entering the air duct, and the one-way valve intercepts small insect pests, dirty gas or backflow from the underground drainage ditch into the air duct; the air extraction and control system is the main power system; the power system relies on the vertical chimney configuration to produce a natural chimney extraction effect that does not require external power drive, sucking air from the ground air inlet and discharging air to the chimney outlet at the upper end; when the air extraction pressure needs to be increased or it is not suitable to install a higher chimney structure, the fan can generate the negative pressure required for extraction and filtration.

[0020] In the preferred solution, the air extraction and control system also includes an environmental sensing device, which includes an infrared sensor and a humidity sensor. The structure is simple. When in use, the infrared sensor is used to monitor whether there are people passing by or staying. When people pass by or stay, the purification system is controlled to operate, and the gas and aerosols exhaled by the people are sucked and purified; the humidity sensor is used to monitor weather conditions, and the valves in the system are closed in rainy and snowy weather to prevent water from entering.

[0021] In the preferred solution, the sterilization and purification module includes a primary dust collector arranged behind the air inlet valve and a sterilization filter in the expansion section. The structure is simple. When in use, the primary dust collector uses a cyclone primary dust collector, which has the primary filtration function and uses the cyclone dust removal principle to filter out larger particles in the air. It can be reused; the sterilization filter uses a pleated sterilization filter. According to the use environment, a general-grade or medical-grade sterilization filter is selected accordingly; ultraviolet sterilization, high-temperature resistance heating sterilization, plasma sterilization, ozone sterilization and other high-efficiency sterilization functions can also be added.

[0022] In the preferred solution, the sampling device includes an air inlet sampler disposed between the air inlet valve and the primary dust collector, and an air outlet sampler disposed below the air outlet valve. The structure is simple. When in use, the air inlet sampler collects the original sample of the incoming air, and the air outlet sampler collects the purified air quality sample; it provides data for the epidemic prevention agency, and also provides corresponding use effect data for analysis and research through the difference in the sample data of the import and export.

[0023] In the preferred solution, an air rectifying grille is arranged above the surface air extraction port, the air rectifying grille is parallel to the ground, and the direction of the rectified airflow is perpendicular to the ground. The structure is simple. When in use, the air rectifying grille on the top has a certain thickness, and the air above is sucked downward, rectified by the air rectifying grille to form a laminar flow, and superimposed with the air extraction rectifying effect of each air inlet on the ground, so as to enhance the stability of the laminar flow field, reduce the disturbance of the external wind force on the sinking laminar flow, and avoid lateral flow of air.

[0024] In the preferred solution, a waterproof cover is connected above the air outlet at the top of the upper pipe section, and a lightning rod is arranged on the top of the waterproof cover. The structure is simple, and when in use, the waterproof cover prevents water from falling into the gap of the upper pipe section to form water accumulation; the lightning rod can provide lightning protection when the chimney is high or the installation area is relatively open.

[0025] In the preferred solution, the air inlet valve and the air outlet valve are both electrically controlled valves, and the environmental sensing device, the fan, the air inlet valve and the air outlet valve are all connected to the control device, which includes a PLC controller and related circuits. The structure is simple, and when in use, the surrounding flow of people and weather conditions are detected by the environmental sensing device, and the opening and closing state of the system is adjusted in real time.

[0026] In a preferred embodiment, the purification method of the ground suction chimney effect air purification system comprises the following steps:

[0027] S1, the environmental sensing device monitors the use environment in real time. When someone passes by or stays in the environment, the infrared sensor in the environmental sensing device outputs a signal, the control device issues a command, and the system enters the working state: first open the air inlet valve and the air outlet valve, and then start the fan; after the person leaves, continue to run for a while, and then close the fan, the air inlet valve and the air outlet valve one after another;

[0028] S2, under the combined effect of the fan exhaust pressure and the chimney exhaust effect, the air near the chimney structure enters the air intake network through multiple air intake grille holes on the ground and the air intake cover on the ground surface, and the air intake network and the shutters collect and inhale the gas into the lower pipe section of the chimney structure;

[0029] S3, the gas rises through the air inlet valve, and the sample is collected by the air inlet sampler, and then sterilized and filtered by the primary dust collector and the sterilization filter. The filtered air rises and passes through the air outlet sampler for sample collection, and then is discharged through the air outlet valve to complete the purification process;

[0030] S4, in rainy and snowy weather, the humidity sensor of the environmental sensing device outputs a signal in real time, and the control device issues a closing command to close the air inlet valve and the air outlet valve, so that the air flow channel between the inside of the chimney structure and the external environment is closed; rainwater flows from the air intake grille holes into the drainage ditch below the surface.

[0031] A ground-suction chimney effect air purification system comprises a ground air settling system, the ground air settling system comprises a plurality of air intake grille holes and an air intake cover opened on the ground, which are connected with a hollow air intake pipe network arranged in the ground surface below; the air intake pipe network is connected with an underground drainage ditch, an interception net is arranged at the connection, and a one-way valve is arranged above the interception net; a chimney structure is connected above the ground air settling system, the chimney structure comprises a down pipe section and an upper pipe section, and an expansion section is arranged between the lower pipe section and the upper pipe section; a shutter is opened on the side surface of the lower pipe section for air intake, and the bottom of the lower pipe section is connected with the air intake pipe network; an air extraction and control system, a sterilization and purification module and a sampling device are arranged inside the chimney structure. The purification system can forcefully draw air underground for gases exhaled by people that may contain infectious viruses, greatly shortening the lateral diffusion distance and residence time of virus aerosols in the environment. It also filters and sterilizes the captured air to remove a large number of infectious components in the air, discharges clean air to the outside, and reduces the spread of infectious diseases. At the same time, the sampling device inside the chimney collects external air samples for monitoring the status of infectious diseases in the air environment. It is suitable for installation in large public places and can effectively block the spread of viruses between close-range people in crowded areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention used outdoors.

[0033] Figure 2 It is a schematic diagram of the structure when the present invention is used indoors.

[0034] Figure 3 It is a schematic diagram of the structure of the present invention used at the interface of closed building facilities.

[0035] The accompanying drawings are marked as follows: drainage ditch 1, interception net 2, one-way valve 3, air intake grille hole 4, shutter 5, air inlet valve 6, primary dust collector 7, sterilizing filter 8, fan 9, air outlet valve 11, waterproof cover 12, air outlet sampler 13, upper pipe section 14, expansion section 16, air inlet sampler 17, environmental sensor device 18, lower pipe section 19, air inlet hood 20, air inlet network 21, indoor air inlet pipe 22, air inlet opening and closing device 23, indoor air supply pipe 24, air outlet three-way valve 25, capture hood 26, exhaust pipe 27, capture top cover 28, connecting pipe 29, air rectification grille 31, lightning rod 61. DETAILED DESCRIPTION

[0036] Embodiment 1:

[0037] like Figure 1In the invention, a structure and purification method of a ground suction chimney effect air purification system for outdoor use are provided, which includes a ground air settling system, the ground air settling system includes a plurality of air intake grille holes 4 and an air intake cover 20 opened on the ground, the air intake grille holes 4 and the air intake cover 20 are both connected to a hollow air intake pipe network arranged in the ground below; the air intake pipe is connected to an underground drainage ditch 1, an interception net 2 is arranged at the connection, and a one-way valve 3 is arranged above the interception net 2; a chimney structure is connected above the ground air settling system, the chimney structure includes a down pipe section 19 and an upper pipe section 14, an expansion section 16 is arranged between the lower pipe section 19 and the upper pipe section 14; a shutter 5 is opened on the side surface of the lower pipe section 19 for air intake, and the bottom of the lower pipe section 19 is connected to the air intake pipe network; an air extraction and control system, a sterilization and purification module and a sampling device are arranged inside the chimney structure. The purification system can forcefully draw air underground for gases exhaled by people that may contain infectious viruses, greatly shortening the lateral diffusion distance and residence time of viral aerosols in the environment. It can also filter and sterilize the captured air to remove a large number of infectious components in the air, discharge clean air to the outside, and reduce the spread of infectious diseases. At the same time, the sampling device inside the chimney collects external air samples for monitoring the status of infectious diseases in the air environment. It is suitable for installation in large public places and can effectively block the spread of viruses between close-range people in crowded areas.

[0038] In the preferred solution, the air extraction and control system includes an air inlet valve 6 arranged in the lower pipe section 19, an air outlet valve 11 arranged in the upper pipe section 14, and a fan 9 arranged at the connection between the upper pipe section 14 and the expansion section 16. The structure is simple. When in use, the air intake mode of the air intake grille hole 4 on the ground does not affect the ground landscape and the walking of people, but it is easy to enter water. The rainwater and small debris flowing in from the air intake grille hole 4 are discharged through the drainage ditch 1; the interception net 2 blocks large rodent pests from entering the air duct, and the one-way valve 3 intercepts small insect pests, dirty gas or backflow from the underground drainage ditch 1 into the air duct; the air extraction and control system is the main power system; the power system relies on the vertical chimney configuration to produce a natural chimney extraction effect without external power drive, sucking air from the ground air inlet and discharging air to the chimney outlet at the upper end; when it is necessary to increase the extraction pressure or it is not suitable to install a higher chimney structure, the fan 9 can generate the negative pressure required for extraction and filtration.

[0039] In the preferred solution, the air extraction and control system further includes an environmental sensing device 18, which includes an infrared sensor and a humidity sensor. The structure is simple. When in use, the infrared sensor is used to monitor whether there are people passing by or staying. When people pass by or stay, the purification system is controlled to operate, and the gas and aerosols exhaled by the people are sucked and purified; the humidity sensor is used to monitor weather conditions, and the valves in the system are closed in rainy and snowy weather to prevent water from entering.

[0040] In the preferred solution, the sterilization and purification module includes a primary dust collector 7 arranged behind the air inlet valve 6, and a sterilization filter 8 connected to the inner wall of the expansion section 16. The structure is simple. When in use, the primary dust collector 7 uses a cyclone primary dust collector 7, which has the primary filtering function and uses the cyclone dust removal principle to filter out larger particles in the air, and can be reused; the sterilization filter 8 uses a pleated sterilization filter 8, and according to the use environment, a general-grade or medical-grade sterilization filter 8 is selected accordingly; ultraviolet sterilization, high-temperature resistance heating sterilization, plasma sterilization, ozone sterilization and other high-efficiency sterilization functions can also be added; the expansion structure of the expansion section 16 reduces the fluid flow rate and increases the residence time of the gas in the sterilization and purification module, thereby enhancing the purification effect.

[0041] In the preferred solution, the sampling device includes an air inlet sampler 17 disposed between the air inlet valve 6 and the primary dust collector 7, and an air outlet sampler 13 disposed below the air outlet valve 11. The structure is simple. When in use, the air inlet sampler 17 collects the original sample of the incoming air, and the air outlet sampler 13 collects the purified air quality sample; it provides data for the epidemic prevention agency, and also provides corresponding use effect data for analysis and research through the difference in the sample data of the import and export.

[0042] In the preferred solution, an air rectifying grille 31 is arranged above the surface air extraction port, the air rectifying grille 31 is parallel to the ground, and the direction of the rectified airflow is perpendicular to the ground. The structure is simple. When in use, the air rectifying grille 31 on the top has a certain thickness, and the air above is sucked downward, rectified by the air rectifying grille 31 to form a laminar flow, and superimposed with the air extraction rectifying effect of each air inlet on the ground, so as to enhance the stability of the laminar flow field, reduce the disturbance of the external wind force on the sinking laminar flow, and avoid lateral flow of air.

[0043] In the preferred solution, a waterproof cover 12 is connected above the air outlet at the top of the upper pipe section 14, and a lightning rod 61 is arranged on the top of the waterproof cover 12. The structure is simple, and when in use, the waterproof cover 12 prevents water from falling into the gap of the upper pipe section 14 to form water accumulation; the lightning rod 61 can provide lightning protection when the chimney is high or the installation area is relatively open.

[0044] In the preferred solution, the air inlet valve 6 and the air outlet valve 11 are both electrically controlled valves, and the environmental sensing device 18, the fan 9, the air inlet valve 6 and the air outlet valve 11 are all connected to the control device, which includes a PLC controller and related circuits. The structure is simple, and when in use, the control device is integrated into a control box, which is set inside the chimney structure, and detects the surrounding flow of people and weather conditions through the environmental sensing device 18, and adjusts the opening and closing state of the system in real time.

[0045] In a preferred embodiment, the purification method of the ground suction chimney effect air purification system comprises the following steps:

[0046] S1, the environment sensor device 18 monitors the use environment in real time. When a person passes by or stays in the environment, the infrared sensor in the environment sensor device 18 outputs a signal, the control device issues a command, and the system enters the working state: first open the air inlet valve 6 and the air outlet valve 11, and then start the fan 9; after the person leaves, continue to run for a period of time, and then successively close the fan 9, the air inlet valve 6 and the air outlet valve 11;

[0047] S2, under the combined effect of the exhaust pressure of the fan 9 and the exhaust effect of the chimney, the air near the chimney structure enters the air intake network through the multiple air intake grille holes 4 on the ground and the air intake cover 20 on the ground surface, and the air intake network and the shutters 5 collect and suck the gas into the lower pipe section 19 of the chimney structure, and rise under the chimney effect;

[0048] S3, the gas rises through the air inlet valve 6, and is sampled by the air inlet sampler 17, and then is initially filtered by the primary dust collector 7. The air after the initial filtration rises to the sterilizing filter 8 of the expansion section 16 for sterilization filtration. The filtered air rises through the air outlet sampler 13 for sample collection, and then is discharged through the air outlet valve 11, completing the purification process;

[0049] S4, in rainy and snowy weather, the humidity sensor of the environmental sensing device 18 outputs a signal in real time, and the control device issues a closing command to close the air inlet valve 6 and the air outlet valve 11, so that the air flow channel between the inside of the chimney structure and the external environment is closed; rainwater flows from the air inlet grille hole 4 into the drainage ditch 1 below the surface.

[0050] Embodiment 2:

[0051] like Figure 2 In the invention, a structure and purification method of a ground-suction chimney effect air purification system for indoor use are provided. The indoor chimney effect air purification system makes certain changes to the ground air settling system and the chimney structure on the basis of the ground-suction chimney effect air purification system to meet the needs of indoor use.

[0052] It consists of a ground air settling system, an air extraction and control system, a sterilization and purification module, a sampling device and a chimney structure.

[0053] The ground air settling system includes a drainage ditch 1, an interception net 2, a one-way valve 3, an air intake grille hole 4, a shutter 5, an air inlet hood 20, an air intake duct network, an indoor air inlet duct 22, and an air rectification grille 31 on the top; the air intake grille hole 4 is installed on the ground, and its upper surface is flush with the ground; the air inlet hood 20 is an air inlet that is higher than the ground, intakes air from all sides, and is not easily infiltrated with water; the shutter 5 is an air inlet that is higher than the ground, intakes air from the side, and is not easily infiltrated with water; the indoor air inlet duct 22 is an air inlet duct that intakes air from indoor facilities such as desks, podiums, rostrums, workbenches, counters, chairs and other facilities that are in close contact with people's breathing sources, and various ground air inlets are connected to the underground air inlet duct network.

[0054] The air extraction and control system includes an air inlet valve 6 , a fan 9 , a control device, an air outlet valve 11 , an air inlet opening and closing device 23 , and an air outlet three-way valve 25 .

[0055] The sterilization and purification module includes a cyclone primary dust collector 7 and a sterilization filter 8.

[0056] The sampling device includes an air inlet sampler 17 and an air outlet sampler 13, which are respectively arranged at the rear end of the air inlet valve 6 and the front end of the air outlet valve 11.

[0057] The chimney structure includes a lower pipe section 19 , an expansion pipe, an upper pipe section 14 , an indoor air supply pipe 24 , and a waterproof cover 12 .

[0058] The indoor ground-suction chimney effect air purification system can set up various air inlets from the indoor near-ground space, and can also set up air inlets in indoor facilities that are in close contact with people's breathing sources, such as desks, podiums, rostrums, workbenches, counters, chairs, etc., to efficiently capture the air exhaled by individuals and reduce the amount of air transmitted to other people.

[0059] Embodiment 3:

[0060] like Figure 3 In the invention, a structure and purification method of a ground-suction chimney effect air purification system when used at an interface are provided. The interface chimney effect air purification system is suitable for important closed building facilities to avoid leakage or penetration of toxic and harmful air between the inside and outside of the building facilities.

[0061] The interface chimney effect air purification system makes certain changes based on the ground suction chimney effect air purification system, changing the ground air sedimentation system into an interface air forced capture system. The rest of the system includes an exhaust and control system, a purification system, a sampling device, and a chimney structure.

[0062] The interface air forced capture system comprises a capture hood 26 for capturing gas leaking from doors and windows, an exhaust pipe 27, a capture top cover 28 for capturing air leaking from the roof, and a connecting pipe 29.

[0063] The air extraction and control system includes an air inlet valve 6 , a fan 9 , a control device and an air outlet valve 11 .

[0064] The purification module includes a filtering device, and the filtering device is selected from corresponding chemical, biological, radiological and nuclear filtering devices.

[0065] The sampling device includes an air inlet sampler 17 and an air outlet sampler 13, which are respectively arranged at the rear end of the air inlet valve 6 and the front end of the air outlet valve 11.

[0066] The chimney structure includes a lower pipe section 19 , an expansion pipe, an upper pipe section 14 and a waterproof cover 12 .

[0067] The interface chimney effect suction air purification system sets various air inlets on the doors, windows, exterior walls and roofs of enclosed buildings to capture toxic and harmful gases leaking from the enclosed buildings and prevent them from spreading to the outside.

[0068] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A ground suction chimney effect air purification system, characterized in that: The invention comprises a ground air settling system, which comprises a plurality of air intake grille holes (4) and an air intake cover (20) opened on the ground; the air intake grille holes (4) and the air intake cover (20) are both connected to a hollow air intake pipe network (21) arranged in the ground surface below; the air intake pipe network (21) is connected to an underground drainage ditch (1), an interception net (2) is arranged at the connection point, and a one-way valve (3) is arranged above the interception net (2); a chimney structure is connected above the ground air settling system, and the chimney structure comprises a lower pipe section (19) and an upper pipe section (14), and the lower pipe section (19) and An expansion section (16) is provided between the upper pipe sections (14); a shutter (5) is provided on the side surface of the lower pipe section (19) for air intake, and the bottom of the lower pipe section (19) is connected to the air intake pipe network (21); an air extraction and control system, a sterilization and purification module and a sampling device are provided inside the chimney structure; the sampling device comprises an air inlet sampler (17) provided between the air inlet valve (6) and the primary dust collector (7), and an air outlet sampler (13) provided below the air outlet valve (11); the ground air settling system comprises a plurality of indoor air inlet pipes (22), One end of a plurality of indoor air inlet pipes (22) is connected to an air inlet pipe network (21), and the other end is arranged at an indoor facility that is in close contact with a respiratory source of a person; the sterilization and purification module comprises a primary dust collector (7) arranged behind an air inlet valve (6), and a sterilization filter (8); an air rectifying grille (31) is connected to the side of the upper pipe section (14), the air rectifying grille (31) is parallel to the ground, and the direction of the rectified airflow is perpendicular to the ground; the air inlet valve (6) and the air outlet valve (11) are both electrically controlled valves, and the air extraction and control system comprises a lower pipe section (19 ) and an air inlet valve (6) arranged in the upper pipe section (14), an air outlet valve (11) arranged in the upper pipe section (14), and a fan (9) arranged at the connection between the upper pipe section (14) and the expansion section (16); the air extraction and control system also includes an environmental sensing device (18) connected to the side surface of the lower pipe section (19), and the environmental sensing device (18) includes an infrared sensor and a humidity sensor; the environmental sensing device (18), the fan (9), the air inlet valve (6) and the air outlet valve (11) are all connected to the control device, and the control device includes a PLC controller and related circuits.

2. The ground suction chimney effect air purification system according to claim 1, characterized in that: A waterproof cover (12) is connected above the air outlet at the top of the upper pipe section (14), and a lightning rod (61) is arranged on the top of the waterproof cover.

3. The purification method of the ground suction chimney effect air purification system according to claim 2, characterized in that: It includes the following steps: S1, the environment sensing device (18) monitors the use environment in real time. When a person passes by or stays in the environment, the infrared sensor in the environment sensing device (18) outputs a signal, the control device issues a command, and the system enters the working state: first, the air inlet valve (6) and the air outlet valve (11) are opened, and then the fan (9) is started; after the person leaves, the system continues to run for a period of time, and then the fan (9), the air inlet valve (6) and the air outlet valve (11) are successively closed; S2, under the combined effect of the exhaust pressure of the fan (9) and the exhaust effect of the chimney, the air near the chimney structure enters the air inlet network (21) through the multiple air inlet grille holes (4) on the ground and the air inlet cover (20) on the ground surface, and the air inlet network (21) and the shutter (5) jointly collect and inhale the gas into the lower pipe section (19) of the chimney structure; S3, the gas rises and passes through the air inlet valve (6), and is sampled by the air inlet sampler (17), and then is initially filtered by the primary dust collector (7). The air after the initial filtration rises to the sterilization filter (8) of the expansion section (16) for sterilization filtration. The filtered air rises and passes through the air outlet sampler (13) for sample collection, and then is discharged through the air outlet valve (11), completing the purification process; S4, in rainy and snowy weather, the humidity sensor of the environmental sensing device (18) outputs a signal in real time, and the control device issues a closing command to close the air inlet valve (6) and the air outlet valve (11), thereby closing the air flow channel between the inside of the chimney structure and the external environment; rainwater flows from the air inlet grille hole (4) into the drainage ditch (1) below the ground surface.

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