Indoor forward airflow isolation barrier and air large circulation system

Abstract

The invention relates to the technical field of indoor air circulation systems, and discloses an indoor forward airflow isolation barrier and an air large circulation system, the indoor forward airflow isolation barrier comprises an indoor space, a bottom air supply space and a top air draft space, the bottom air supply space is located below the indoor space, and the top air draft space is located above the indoor space; a plurality of transverse strip-shaped remote air supply outlets and longitudinal strip-shaped remote air supply outlets which are communicated with the bottom air supply space are formed in the bottom of the indoor space, a space defined by the transverse strip-shaped remote air supply outlets and the longitudinal strip-shaped remote air supply outlets is a vertical airflow isolation space, and only one person can be contained in the vertical airflow isolation space. The top of the indoor space is provided with a plurality of transverse air suction openings and longitudinal air suction openings which are communicated with the top air suction space; by means of the indoor forward airflow isolation barrier and the air large circulation system, the problem that in the prior art, transverse circulation of viruses in the indoor environment cannot be cut off from the source, and then virus propagation is generated is solved.

Description

Technical Field

[0001] The invention relates to the technical field of indoor air circulation systems, and in particular to an indoor positive airflow isolation barrier and a large air circulation system. Background Art

[0002] In the prior art, in the same indoor environment, the air viruses exhaled by others will circulate horizontally in the room, and the horizontal circulation of indoor air will accelerate the spread of the virus. In the prior art, by installing air purification devices indoors, it can only purify the polluted air, but cannot block the spread of the virus in the air from the source. Therefore, how to cut off the horizontal circulation of viruses in the indoor environment from the source has become an urgent problem to be solved. Summary of the invention

[0003] The object of the present invention is to provide an indoor positive airflow isolation barrier and a large air circulation system to solve at least one of the above-mentioned problems existing in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An indoor positive airflow isolation barrier and a large air circulation system, comprising an indoor space, a bottom air supply space and a top exhaust space, wherein the bottom air supply space is located below the indoor space, and the top exhaust space is located above the indoor space. The bottom of the indoor space is provided with a plurality of transverse strip remote air supply ports and longitudinal strip remote air supply ports connected with the bottom air supply space, the space enclosed by the transverse strip remote air supply ports and the longitudinal strip remote air supply ports is a vertical airflow isolation space, and the vertical airflow isolation space can only be used to accommodate one person, and the top of the indoor space is provided with a plurality of transverse exhaust ports and longitudinal exhaust ports connected with the top exhaust space, the transverse strip remote air supply ports coincide with the vertical projection of the transverse exhaust ports, and the longitudinal strip remote air supply ports coincide with the vertical projection of the longitudinal exhaust ports; an exhaust fan, an air disinfection device and an air supply fan are connected in sequence between the outlet end of the top exhaust space and the inlet end of the bottom air supply space.

[0006] In this technical solution, since the vertical projections of the horizontal strip remote air supply outlet and the horizontal exhaust outlet coincide, and the vertical projections of the vertical strip remote air supply outlet and the vertical exhaust outlet coincide, during the process of the horizontal strip remote air supply outlet and the vertical strip remote air supply outlet discharging air and the horizontal exhaust outlet and the vertical exhaust outlet exhausting air, a main airflow barrier is formed between the air supply outlet and the exhaust outlet while supplying and exhausting air, there is no obstacle between the main airflow of the vertical strip remote air supply outlet and the vertical exhaust outlet, and the air flow rate is fast, which is conducive to forming a vertical airflow barrier that can isolate the surrounding airflow, and thus can protect individuals in the vertical airflow isolation space. Specifically, since there are several independent vertical airflow isolation spaces in the room, the vertical airflow barrier can cut off the horizontal circulation of air viruses exhaled by others, and at the same time, the clean air delivered by the strip air supply outlet can be breathed, the indoor airflow enters from the bottom and exits from the top, and the overall upward convection, people breathe air that has not been exhaled by others, and the indoor gas flow does not turn and the process is continuous. This technical solution uses the fact that the indoor air supply density is higher than the air density emitted by the human body. The indoor air flow forms a gradient density difference from bottom to top, which conforms to the law that high-density gas flows to low-density gas, and achieves the purpose of positive airflow rising. The indoor bottom air supply pressure is higher than the top exhaust negative pressure, and the exhaled turbid air is sent forward, which is an upward positive airflow, which conforms to the law that high-pressure air flows to low-pressure air. The indoor bottom air supply velocity is higher than the indoor upper gas velocity, and the diffused air flow is closer to the human breathing zone when the main air flow velocity of the air supply is higher, which is conducive to the diffused air flow to mix with the virus air when it rises, and take away the turbid air exhaled by people in the forward direction. Since the outlet end of the top exhaust space and the inlet end of the bottom air supply space are connected in sequence with an exhaust fan, an air disinfection device and an air supply fan, the foul air exhaled by the human body is sucked away by the exhaust fan, and then enters the air disinfection device for disinfection, purification and dehydration. The air supply fan sends the purified airflow from the bottom air supply space through the horizontal strip remote air supply port and the vertical strip remote air supply port into the indoor space. The airflow rises for human inhalation and upward discharge, completing the whole process of large air circulation.

[0007] Furthermore, the air supply fan is connected to the inlet end of the bottom air supply space with an air-conditioning duct machine, and the air-conditioning duct machine is a bottom-mounted air-conditioning duct machine, which plays the role of temperature adjustment and outputting clean air.

[0008] Furthermore, it also includes a table airflow barrier assembly, which includes a table, a chair and an air supply interface arranged in a vertical airflow isolation space, the air supply interface is installed at the bottom of the indoor space close to the corresponding table, the air supply interface is connected to the bottom air supply space, air ducts are provided around the table top of the table, air outlets are provided on the air duct along the length direction of the air duct, and the air supply interface is connected to the air duct through a hose.

[0009] The table airflow barrier component can be used to set up an individual airflow barrier for each person. It can be used in indoor gathering places with chairs and tables to play a double insurance role in preventing the cross-spread of airborne viruses.

[0010] Furthermore, in order to better achieve connectivity between the air ducts, the four air ducts are connected in sequence through elbows, and the hose is connected to any air duct.

[0011] Furthermore, in order to adjust the air outlet direction of the air duct as needed, the air duct is rotatably installed on the table through an air duct bracket, the rotation axis of the air duct is consistent with the axis of the air duct, and the air duct is rotatably matched with the elbow.

[0012] Furthermore, in order to facilitate setting the size of the air supply outlet according to needs, the transverse strip remote air supply outlet and the longitudinal strip remote air supply outlet include a fixed base plate, and adjustable slide plates are symmetrically provided on the fixed base plate. The gap between the relatively arranged adjustable slide plates forms a strip remote air outlet, and the gap between the adjustable slide plates is adjustable.

[0013] The beneficial effects of the present invention are as follows: In this technical solution, since the vertical projections of the horizontal strip remote air supply outlet and the horizontal exhaust outlet coincide, and the vertical projections of the vertical strip remote air supply outlet and the vertical exhaust outlet coincide, in the process of the horizontal strip remote air supply outlet and the vertical strip remote air supply outlet discharging air and the horizontal exhaust outlet and the vertical exhaust outlet exhausting air, a main airflow barrier is formed between the lower air supply outlet and the upper exhaust outlet while supplying and exhausting air, there is no obstacle between the main airflow of the vertical strip remote air supply outlet and the vertical exhaust outlet, and the air flow rate is fast, which is conducive to forming a vertical airflow barrier that can isolate the surrounding airflow, and thus can protect individuals in the vertical airflow isolation space. Specifically, since there are several independent vertical airflow isolation spaces in the room, the vertical airflow barrier can cut off the horizontal circulation of air viruses exhaled by others, and at the same time, the clean air delivered by the strip air supply outlet can be breathed, the indoor airflow enters from the bottom and exits from the top, and the overall upward convection, people breathe air that has not been exhaled by others, and the indoor gas flow direction does not turn and the process is continuous. This technical solution uses the fact that the indoor air supply density is higher than the air density emitted by the human body. The indoor air flow forms a gradient density difference from bottom to top, which conforms to the law that high-density gas flows to low-density gas, and achieves the purpose of positive airflow rising. The indoor bottom air supply pressure is higher than the top exhaust negative pressure, and the exhaled turbid air is sent forward, which is an upward positive airflow, which conforms to the law that high-pressure air flows to low-pressure air. The indoor bottom air supply velocity is higher than the indoor upper gas velocity, and the diffused air flow is closer to the human breathing zone when the main air flow velocity of the air supply is higher, which is conducive to the diffused air flow to mix with the virus air when it rises, and take away the turbid air exhaled by people in the forward direction. Since the outlet end of the top exhaust space and the inlet end of the bottom air supply space are connected in sequence with an exhaust fan, an air disinfection device and an air supply fan, the foul air exhaled by the human body is sucked away by the exhaust fan, and then enters the air disinfection device for disinfection, purification and dehydration. The air supply fan sends the purified airflow from the bottom air supply space through the horizontal strip remote air supply port and the vertical strip remote air supply port into the indoor space. The airflow rises for human inhalation and upward discharge, completing the whole process of large air circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 is a structural schematic diagram of another indoor environment in the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of the indoor top view state in the present invention;

[0017] Figure 4 It is a top view structural schematic diagram of the desktop air duct installation state in the present invention;

[0018] Figure 5 It is a side view structural schematic diagram of the desktop air duct state in the present invention;

[0019] Figure 6 It is a partial structural schematic diagram of the desktop air duct installation state in the present invention;

[0020] Figure 7 It is a structural schematic diagram of the strip-shaped remote air supply outlet in the present invention.

[0021] In the figure: indoor space 1; lower clean air zone 1.1; middle breathing zone 1.2; upper dirty air zone 1.3; bottom air supply space 2; top exhaust space 3; horizontal strip remote air supply outlet 4; longitudinal strip remote air supply outlet 5; vertical air flow isolation space 6; longitudinal exhaust outlet 7; exhaust fan 8; air disinfection device 9; air supply fan 10; air conditioning duct machine 11; table 12; chair 13; air supply interface 14; air duct 15; elbow 16; air duct bracket 17; fixed bottom plate 18; adjustable slide plate 19; rising diffused airflow 20; vertical airflow barrier 21; hose 22; air outlet 23; strip remote air outlet 24. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0023] Embodiment 1:

[0024] like Figure 1-Figure 7 As shown, the present embodiment provides an indoor positive airflow isolation barrier and a large air circulation system, comprising an indoor space 1, a bottom air supply space 2 and a top exhaust space 3, the bottom air supply space 2 is located below the indoor space 1, the top exhaust space 3 is located above the indoor space 1, a plurality of transverse strip remote air supply vents 4 and longitudinal strip remote air supply vents 5 connected with the bottom air supply space 2 are provided at the bottom of the indoor space 1, the space enclosed by the transverse strip remote air supply vents 4 and the longitudinal strip remote air supply vents 5 is a vertical airflow isolation space 6, and the vertical airflow isolation space 6 can only be used to accommodate one person, a plurality of transverse exhaust vents and longitudinal exhaust vents 7 connected with the top exhaust space 3 are provided at the top of the indoor space 1, the transverse strip remote air supply vents 4 coincide with the vertical projection of the transverse exhaust vents, and the longitudinal strip remote air supply vents 5 coincide with the vertical projection of the longitudinal exhaust vents 7; an exhaust fan 8, an air disinfection device 9 and a supply fan 10 are connected in sequence between the outlet end of the top exhaust space 3 and the inlet end of the bottom air supply space 2.

[0025] It should be noted that the remote air supply ports in the transverse strip remote air supply ports 4 and the longitudinal strip remote air supply ports 5 in the present technical solution only refer to the air supply ports designed as axial air supply ports, such as Figure 7 As shown, the air supply outlet is in the shape of a strip that is wide at the bottom and narrow at the top, forming a long-range air supply nozzle. The air supply airflow can be delivered to a longer distance and has a longer range. Therefore, it is defined as a strip-shaped long-range air supply outlet.

[0026] In this technical solution, since the vertical projections of the horizontal strip remote air supply outlet 4 and the horizontal exhaust outlet coincide, and the vertical projections of the vertical strip remote air supply outlet 5 and the vertical exhaust outlet 7 coincide, during the process of the horizontal strip remote air supply outlet 4 and the vertical strip remote air supply outlet 5 discharging air, and the horizontal exhaust outlet and the vertical exhaust outlet 7 exhausting air, a main airflow barrier is formed between the lower air supply outlet and the upper exhaust outlet while supplying and exhausting air, and there are no obstacles between the main airflows of the vertical strip remote air supply outlet 5 and the vertical exhaust outlet 7, and the air flow rate is fast, which is conducive to forming a vertical airflow barrier 21 that can isolate the surrounding airflow, and thus can protect individuals in the vertical airflow isolation space 6. Specifically, since there are several independent vertical airflow isolation spaces 6 in the room, the vertical airflow barrier 21 can cut off the horizontal circulation of air viruses exhaled by others, and at the same time, the clean air delivered by the strip remote air supply outlet can be breathed, and the indoor airflow enters from the bottom and exits from the top, and the overall upward convection, people breathe air that has not been exhaled by others, and the indoor gas flow direction does not turn and the process is continuous. This technical solution uses the fact that the indoor air supply density is higher than the air density emitted by the human body. The indoor air flow forms a gradient density difference from bottom to top, which conforms to the law that high-density gas flows to low-density gas, and achieves the purpose of positive airflow rising. The indoor bottom air supply pressure is higher than the top exhaust negative pressure, and the exhaled turbid air is sent forward, which is an upward positive airflow, which conforms to the law that high-pressure air flows to low-pressure air. The indoor bottom air supply velocity is higher than the indoor upper gas velocity, and the diffused air flow is closer to the human breathing zone when the main air flow velocity of the air supply is higher, which is conducive to the diffused air flow to mix with the virus air when it rises, and take away the turbid air exhaled by people in the forward direction. Since the exhaust fan 8, the air disinfection device 9 and the air supply fan 10 are connected in sequence between the outlet end of the top exhaust space 3 and the inlet end of the bottom air supply space 2, the turbid air exhaled by the human body is sucked away by the exhaust fan 8, and then enters the air disinfection device 9 for disinfection, purification and dehydration. The air supply fan 10 sends the purified airflow from the bottom air supply space 2 through the horizontal strip remote air supply port 4 and the longitudinal strip remote air supply port 5 into the indoor space 1. The airflow rises for human inhalation and upward discharge, completing the whole process of large air circulation, so that indoor viruses and harmful gases are disinfected in the large circulation system and are not discharged.

[0027] Embodiment 2:

[0028] This embodiment is optimized based on the above-mentioned embodiment 1.

[0029] The air supply fan 10 is connected to the inlet end of the bottom air supply space 2 with an air conditioning duct machine 11, which is a bottom-mounted air conditioning duct machine that plays a role in temperature adjustment and outputting clean air.

[0030] Embodiment 3:

[0031] This embodiment is optimized based on the above-mentioned embodiment 1.

[0032] It also includes a table airflow barrier assembly, which includes a table 12, a chair 13 and an air supply interface 14 arranged in a vertical airflow isolation space 6. The air supply interface 14 is installed at the bottom of the indoor space 1 close to the corresponding table 12. The air supply interface 14 is connected to the bottom air supply space 2. Air ducts 15 are provided around the table 12. Air outlets 23 are provided on the air duct 15 along the length direction of the air duct 15. The air supply interface 14 is connected to the air duct 15 through a hose 22.

[0033] The table airflow barrier component can be used to set up an individual airflow barrier for each person. It can be used in indoor gathering places with chairs and tables to play a double insurance role in preventing the cross-spread of airborne viruses.

[0034] Embodiment 4:

[0035] This embodiment is optimized based on the above-mentioned embodiment 3.

[0036] In order to better achieve the connection between the air ducts 15 , the four air ducts 15 are connected in sequence through the elbows 16 , and the hose 22 is connected to any air duct 15 .

[0037] Embodiment 5:

[0038] This embodiment is optimized based on the above-mentioned embodiment 4.

[0039] In order to adjust the air outlet direction of the air duct 15 as needed, the air duct 15 is rotatably mounted on the table 12 through the air duct bracket 17 , the rotation axis of the air duct 15 is consistent with the axis of the air duct 15 , and the air duct 15 and the elbow 16 are rotatably matched.

[0040] Preferably, the left, right and front desk ducts 15 are arranged around the three sides of the desk, close to the outside of the desk, and flush with the desk. The rear duct 15 is slightly higher than the desk, so that the entire airflow barrier table and chair pipe assembly can be moved forward as needed to change and adjust the airflow direction. It should be noted that the air outlet 12 can be upward, or slightly adjusted to the left or right, or only one duct 15 can be set as a rotatable duct 15 as needed.

[0041] Embodiment 6:

[0042] This embodiment is optimized based on the above-mentioned embodiment 1.

[0043] In order to facilitate setting the size of the air supply outlet according to needs, the transverse strip remote air supply outlet 4 and the longitudinal strip remote air supply outlet 5 include a fixed base plate 18, and adjustable slide plates 19 are symmetrically arranged on the fixed base plate 18. The gap between the relatively arranged adjustable slide plates 19 forms a strip remote air outlet 24, and the gap between the adjustable slide plates 19 is adjustable.

[0044] In this technical solution, the upper and lower spaces of the room are in a positive airflow state, and the indoor air enters the room evenly from the bottom air supply space 2 through the horizontal strip remote air supply port 4 and the longitudinal strip remote air supply port 5, and the airflow rises vertically as a whole. People breathe from the clean air flow (air that has not been exhaled by others) entering the lower clean air zone 1.1. The air sent out from the horizontal strip remote air supply port 4 and the longitudinal strip remote air supply port 5 is in positive pressure, and the horizontal air outlet and the longitudinal air outlet 7 are in negative pressure. Except for part of the air flow diffusing and rising, most of the air flow forms the main air flow, which rises straight without turning and flows upward continuously.

[0045] In the indoor space 1, the clean air group with the overall upward airflow forms the lower clean air zone 1.1, and the air pressure is provided by the air supply fan 10. The indoor space 1 forms the lower clean air zone 1.1, the middle breathing zone 1.2 and the upper dirty air zone 1.3 in the vertical height. The upper part is negatively pressured by the exhaust fan 8, sucking the dirty air in the middle breathing zone of the head of the people.

[0046] It should be noted that Figure 1 and Figure 2 In the figure, the dotted line between the lower clean air zone 1.1, the middle breathing zone 1.2 and the upper dirty air zone 1.3 is not an interface line, but represents the air flow transition zone. There is no clear boundary, representing different air quality spaces. The lower air flow velocity is as high as possible, the middle air diffusion volume is slightly larger, and the upper negative pressure is high, which promotes the flow velocity in the indoor air flow: the flow velocity of the lower clean air zone 1.1> the flow velocity of the middle human breathing zone> the flow velocity of the dirty air zone after diffusion and mixing, and the overall air flow is always in an upward state. The wind speed output by the horizontal strip remote air supply outlet 4 and the vertical strip remote air supply outlet 5 can reach several meters away, and can also reach more than 20 meters.

[0047] The air supply fan 10, the air conditioning duct machine 11, the bottom air supply space 2, the wind direction of the horizontal strip remote air supply port 4 and the vertical strip remote air supply port 5 form the front section of the air flow; the air supply fan 10 inputs the clean air disinfected and purified by the air disinfection device 9 into the air conditioning duct machine 11 for temperature adjustment, and then transmits the clean air to the lower clean air area 1.1 through the bottom air supply space 2 through the horizontal strip remote air supply port 4 and the vertical strip remote air supply port 5. The air conditioning duct machine 11 is arranged below the indoor space 1, that is, a bottom-mounted air conditioning duct machine, one end of the air conditioning duct machine 11 is connected to the air outlet of the air disinfection device 9, and the other end is connected to the bottom air supply space 2.

[0048] The air from the horizontal and longitudinal air outlets 7 flows to the exhaust fan 8 and is input into the air disinfection device 9 to form the rear section of the air flow. The negative pressure attraction generated by the suction force of the exhaust fan 8 relays the positive pressure main air flow sent by the air supply fan 10 in the opposite direction, sucking the air flow in the upper dirty air area 1.3 in the room and sending it to the air disinfection device 9 for disinfection and purification. The air disinfection device 9 is completed by a chemical liquid membrane air machine, as shown in patent ZL201720699007.6. This patented technology uses different components of liquid medicine to eliminate different viruses or harmful substances, which can be used for all species, eliminating the need to purchase a single function machine for each pollutant or virus.

[0049] The vertical airflow barrier 21 is supplied with clean air by the transverse strip remote air supply port 4 and the longitudinal strip remote air supply port 5, and rises straightly in the obstacle-free space position (except for partial diffusion). At the same time, the vertical airflow isolation barrier 21 is formed under the negative pressure attraction of the transverse exhaust port and the longitudinal exhaust port 7. Each person's body is surrounded by the vertical airflow barrier 21, and the exhalation of the person in it is blocked by the vertical airflow barrier 21 and does not flow horizontally to the others. The exhalation of the person in it is mixed with the rising diffuse airflow and then drawn away under the suction gravity. The vertical airflow barrier 21 and the rising diffuse airflow 20 flow in the same direction. The air supply fan 10 supplies air and the exhaust fan 8 exhausts air up and down continuously, and the indoor air plane rises as a whole without dead ends. The air supply fan 10 inputs the clean air disinfected and purified by the air disinfection device 9 into the air conditioning duct machine 11 for temperature adjustment, and then transmits it to the lower clean air zone 1.1 in the room through the bottom air supply space 2, the horizontal strip remote air supply port 4 and the longitudinal strip remote air supply port 5. The air flow rises and flows through the breathing zone 1.2 in the middle of the room, and the rising diffused air mixes with the exhaled foul air and flows toward the exhaust fan 8.

[0050] In the whole process of large air circulation of the present technical scheme, the turbid air exhaled by the human body is sucked away by the exhaust fan 8, and enters the full-function disinfection and purification air machine for disinfection, purification and dehydration, and the air supply fan 10 sends it into the air conditioning duct machine 11, and enters the room through the bottom air supply space 2 under the floor and the horizontal strip remote air supply port 4 and the vertical strip remote air supply port 5. The air flow rises for the human body to inhale and mix with the exhaled air and go upward, completing the whole process of large air circulation.

[0051] In this technical solution, several airflow barriers are formed indoors for each person, which are suitable for a wide range of scenarios, such as indoor gathering places such as classrooms, conference rooms, businesses, cultural and sports, hotel rooms, hospitals, waiting rooms, central air conditioners, etc., all gathering places for work, study and life. Movable rooms such as elevators, passenger cars, cabins, and cabins. When the virus strikes, the vaccine is in a vacancy period from research and development to popular injection for anti-epidemic and epidemic prevention. This technology is applicable at that time to fill the gap and is effective against various air viruses.

[0052] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An indoor positive airflow isolation barrier and large air circulation system, characterized in that: It includes an indoor space, a bottom air supply space and a top exhaust space, the bottom air supply space is located below the indoor space, the top exhaust space is located above the indoor space, a plurality of transverse strip remote air supply outlets and longitudinal strip remote air supply outlets connected with the bottom air supply space are arranged at the bottom of the indoor space, the space surrounded by the transverse strip remote air supply outlets and the longitudinal strip remote air supply outlets is a vertical airflow isolation space, the vertical airflow isolation space can only be used to accommodate one person, a plurality of transverse exhaust outlets and longitudinal exhaust outlets connected with the top exhaust space are arranged at the top of the indoor space, the transverse strip remote air supply outlets coincide with the vertical projection of the transverse exhaust outlets, the longitudinal strip remote air supply outlets coincide with the vertical projection of the longitudinal exhaust outlets; an exhaust fan, an air disinfection device and an air supply fan are connected in sequence between the outlet end of the top exhaust space and the inlet end of the bottom air supply space.

2. An indoor positive airflow isolation barrier and large air circulation system according to claim 1, characterized in that: The air supply fan is connected to the inlet end of the bottom air supply space with an air conditioning duct machine.

3. The indoor positive airflow isolation barrier and large air circulation system according to claim 1, characterized in that: It also includes a table airflow barrier assembly, which includes a table, a chair and an air supply interface arranged in a vertical airflow isolation space. The air supply interface is installed at the bottom of the indoor space close to the corresponding table. The air supply interface is connected to the bottom air supply space. Air ducts are provided around the table. Air outlets are provided on the air duct along the length direction of the air duct. The air supply interface is connected to the air duct through a hose.

4. The indoor positive airflow isolation barrier and large air circulation system according to claim 3, characterized in that: The four air ducts are connected in sequence through elbows, and the hose is connected to any air duct.

5. An indoor positive airflow isolation barrier and large air circulation system according to claim 4, characterized in that: The air duct is rotatably mounted on the table through an air duct bracket, the rotation axis of the air duct is consistent with the axis of the air duct, and the air duct is rotatably matched with the elbow.

6. The indoor positive airflow isolation barrier and large air circulation system according to claim 1, characterized in that: The transverse strip remote air supply outlet and the longitudinal strip remote air supply outlet include a fixed bottom plate, and adjustable slide plates are symmetrically arranged on the fixed bottom plate. The gap between the relatively arranged adjustable slide plates forms a strip remote air outlet, and the gap between the adjustable slide plates is adjustable.

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