An epidemic prevention passage and an epidemic prevention method

Abstract

The present invention discloses an epidemic prevention passage and an epidemic prevention method. The epidemic prevention passage includes a passage body, and the passage body is provided with an air inlet system, an air return system and an exhaust system. The passage body is divided into an upper area and a lower area through air flow control. The air inlet system includes an air inlet, an air inlet fan, a first filtration and disinfection device and a first nozzle group. The air inlet fan introduces external fresh air through the air inlet, and after filtration and disinfection, sprays and purifies the upper area of the passage body; the air return system includes an air return port, an air return fan, a second filtration and disinfection device and a second nozzle group, and the air return system circulates and sprays and purifies the lower area after filtering and disinfecting the air; the exhaust system includes an exhaust air inlet opened on the exhaust air boxes at both ends of the bottom of the passage body, an exhaust air pipe, an exhaust fan, a third filtration and disinfection device and an exhaust air outlet. The present invention prevents people from cross-infection and secondary air pollution, and effectively guarantees the epidemic prevention effect.

Description

Technical Field

[0001] The present invention belongs to the field of epidemic prevention technologies, and particularly relates to an epidemic prevention passage and an epidemic prevention method. Background Art

[0002] After the outbreak of the epidemic, an epidemic prevention passage can be set at the entrance of a building to carry out epidemic prevention and control work. Currently, the epidemic prevention passage mainly adopts a set of return air circulation ventilation and purification system to circulate and purify the internal air in a closed passage, and then uses the method of side-to-side blowing or a combination of side-to-side blowing and top-down blowing to blow and purify the surface of personnel. If an infected person enters the passage, the virus exhaled by the infected person may continue to exist in the passage after the return air circulation, which will pose a risk of cross-infection to subsequent entering personnel, thus causing the spread of the epidemic inside the building and presenting a relatively large potential safety hazard.

[0003] Therefore, aiming at the deficiencies of the above-mentioned epidemic prevention passage, it is of great significance to study an epidemic prevention method for epidemic prevention passages to avoid the risk of cross-infection. Summary of the Invention

[0004] One of the purposes of the present invention is to provide an epidemic prevention passage, which can achieve sterilization and disinfection while avoiding the risk of cross-infection.

[0005] The epidemic prevention passage of the present invention includes a passage body. The passage body is provided with an air inlet system, a return air system and an exhaust air system. The passage body is divided into an upper region and a lower region. The air inlet system includes an air inlet, an air inlet fan, a first filter and disinfection device, and a first nozzle group composed of a plurality of nozzles installed on the top wall of the passage body and the side wall of the upper region. The air inlet fan introduces external fresh air through the air inlet. The external fresh air sequentially passes through the air inlet, the air inlet fan, the first filter and disinfection device, and the first nozzle group to spray and purify the upper region of the passage body; the return air system includes a return air inlet, a return air fan, a second filter and disinfection device, and a second nozzle group composed of a plurality of nozzles installed on the side wall of the lower region of the passage body. The air in the passage body sequentially passes through the return air inlet, the return air fan, the second filter and disinfection device, and the second nozzle group to circulate and spray and purify the lower region of the passage body; the exhaust air system includes an exhaust air inlet arranged at the bottom of both ends of the passage body, an exhaust air pipe communicated with the exhaust air inlet, an exhaust air fan, a third filter and disinfection device, and an exhaust air outlet. The air discharged from the inside of the passage body sequentially passes through the exhaust air inlet, the exhaust air pipe, the exhaust air fan, the third filter and disinfection device, and the exhaust air outlet and flows to the outside of the epidemic prevention passage.

[0006] The epidemic prevention passage of the present invention can be set at the entrances of crowded places such as stations, airports, shopping malls, and residential communities to purify and disinfect the people entering the places. After a person enters the epidemic prevention passage, the external fresh air is first pressurized by the inlet fan, then disinfected by the first filtration and disinfection device, and finally sprayed into the upper area inside the passage body through the first nozzle group. Among them, the nozzles on the top wall of the passage body spray the external fresh air from top to bottom, and the nozzles on the side walls of the upper area spray the external fresh air relatively. The air inlet system can quickly remove viruses, bacteria, and dust in the upper area, and can comprehensively disinfect all parts of the body of the person in the upper area through air showering; the air return system is used to guide the air flow direction inside the passage body, so that the air inside the passage body is pressurized by the air return fan, and then after being disinfected by the second filtration and disinfection device, it is sprayed into the lower area of the passage body through the second nozzle group. The nozzles on the side walls of the lower area spray the air flow relatively, and can comprehensively spray and purify all parts of the body in the lower area through air showering; the exhaust system is used to extract the air inside the passage body, so as to combine with the air inlet system to regulate the pressure difference inside and outside the epidemic prevention passage. The extracted air is treated by the third filtration and disinfection device and then discharged from the exhaust air outlet, which can avoid secondary pollution caused by the discharged air. The air inlet system, air return system, and exhaust system of the present invention act simultaneously, enabling the air inside the passage body to flow in an organized and directional manner. The upper area is continuously supplied with the filtered and disinfected external fresh air, and the air in the upper area continuously flows to the lower area. The continuous high-speed air flow generates a positive pressure so that the air in the lower area will not flow upward, ensuring that the freshest and virus-free air is inhaled by people in the upper area.

[0007] The epidemic prevention passage of the present invention can be optimized and improved as follows:

[0008] The top wall and side walls of the passage body of the present invention are provided with hollow sandwich layers, and the sandwich layer includes an upper layer and a lower layer. The upper layer and the lower layer are partitioned so that air cannot flow between them. The top of the upper layer is connected to the outlet of the inlet fan, the upper layer is also connected to the first nozzle group, and the first filtration and disinfection device is arranged inside the upper layer;

[0009] The bottom of the lower layer is connected to the outlet of the air return fan, the lower layer is also connected to the second nozzle group, and the second filtration and disinfection device is arranged in the lower layer;

[0010] An air duct is arranged inside the upper layer for connecting the lower layers of the sandwich layers on two opposite side walls.

[0011] The top of the passage body of the present invention is provided with an air inlet box body, and air inlets are opened at both ends of the air inlet box body. The inlet fan is located in the air inlet box body.

[0012] The air return opening of the present invention is located on one side wall inside the passage body, and the air return opening is connected to the lower layer of the sandwich layer through the air return fan.

[0013] At the bottom edges of both ends of the channel body of the present invention, the exhaust air box body is provided. The exhaust air box body is provided with the exhaust air inlet, and the exhaust air box body is communicated with the exhaust air pipe, and the exhaust air pipe is connected to the exhaust fan.

[0014] The first filtering and disinfection device, the second filtering and disinfection device and the third filtering and disinfection device of the present invention are one or any combination of two of the filtering and disinfection devices such as primary filters, high-efficiency filters, high-pressure sterilization filters, ultraviolet disinfection devices, etc., and are used for air sterilization, disinfection and purification.

[0015] The second object of the present invention is to provide an epidemic prevention method applying the above-mentioned epidemic prevention channel. Among them, each nozzle of the first nozzle group and the second nozzle group is a nozzle with an adjustable spraying direction. The pressure difference between the air inside the channel body and the external air is controlled through the air inlet system, the air return system and the air exhaust system, and the air flow velocity and direction inside the channel body are controlled to form upper and lower two air regions. The first nozzle group of the air inlet system sends the external fresh air treated by the first filtering and disinfection device into the upper region inside the channel body, sprays and purifies the upper region. The second nozzle group of the air return system circulates and sends the air treated by the second filtering and disinfection device into the lower region of the channel body, sprays and purifies the lower region, sprays and disinfects the personnel entering the channel body, and the first nozzle group continuously blows the air in the upper region to the lower region to ensure that the air inhaled by the personnel is the external fresh air treated by the first filtering and disinfection device in the upper region.

[0016] The epidemic prevention method of the present invention ensures that the air inside the channel body is always non-toxic air after filtering and disinfection. Especially, the air inhaled by people in the upper region is continuously updated to fresh non-toxic air to avoid cross-infection.

[0017] The height of the epidemic prevention channel of the present invention is determined according to the height of the users. When used by adults, the internal height of the channel body is 1.9 meters, and when used by children, it is 1.6 meters. It can be adjusted according to requirements in other usage scenarios. The height of the upper region ≥ 2 / 5 of the internal height of the channel body, that is, the body parts above the armpits of the people inside the channel body are located in the upper region.

[0018] In summary, the present invention has the following advantages:

[0019] (1) The present invention divides the interior of the epidemic prevention passage into two air regions, namely the upper region and the lower region, by using an air inlet system, an air return system, and an air exhaust system. The air flow in the upper region continuously flows downward, and the positive pressure generated by the air flow from the upper region enables the air return cycle to occur only in the lower region, ensuring that there is no residual exhaled gas in the upper region. The upper region is fresh, non-toxic air introduced from the outside and filtered and disinfected, which is inhaled by personnel. The air inlet system blows and purifies the upper region, the air return system circulates and uses part of the air in the passage, filters and disinfects it, and then blows and purifies the lower region through spraying. The air exhaust system enables the air in the epidemic prevention passage to flow out in an organized and directional manner. Thus, the breathing area of each person entering the passage is fresh air that has been filtered and disinfected, preventing cross-infection and achieving the purpose of epidemic prevention.

[0020] (2) The air exhaust system of the present invention disinfects the air discharged from the epidemic prevention passage to avoid secondary pollution.

[0021] Description of the accompanying drawings

[0022] Figure 1 is a schematic diagram of the internal structure of the epidemic prevention passage of the present invention;

[0023] Figure 2 is a schematic diagram of the air flow organization in the epidemic prevention passage of the present invention;

[0024] Explanation of the reference numerals:

[0025] 1. Passage body; 2. Air inlet; 3. Air inlet fan; 4. First filter and disinfection device; 5. First nozzle group; 6. Air return inlet; 7. Air return fan; 8. Second filter and disinfection device; 9. Air duct; 10. Second nozzle group; 11. Air exhaust inlet; 12. Air exhaust duct; 13. Air exhaust fan; 14. Third filter and disinfection device; 15. Air exhaust outlet; 101. Upper region; 102. Lower region. Detailed implementation manners

[0026] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] As Figure 1 and as Figure 2As shown in the figure, the epidemic prevention passage of the present invention includes a passage body 1, and the passage body 1 is provided with an air inlet system, an air return system and an air exhaust system. The passage body 1 is divided into an upper area 101 and a lower area 102. The air inlet system includes an air inlet 2, an air inlet fan 3, a first filtration and disinfection device 4, and a first nozzle group 5 composed of multiple nozzles installed on the top wall of the passage body 1 and the side wall of the upper area 101. The air inlet fan 3 introduces external fresh air through the air inlet 2, and the external fresh air sequentially passes through the air inlet 2, the air inlet fan 3, the first filtration and disinfection device 4, and the first nozzle group 5 to spray and purify the upper area 101 of the passage body 1; the air return system includes an air return port 6, an air return fan 7, a second filtration and disinfection device 8, and a second nozzle group 10 composed of multiple nozzles installed on the side wall of the lower area 102 of the passage body 1. The air in the passage body 1 sequentially passes through the air return port 6, the air return fan 7, the second filtration and disinfection device 8, and the second nozzle group 10 to circulate and spray and purify the lower area 102 of the passage body 1; the air exhaust system includes an air exhaust inlet 11 provided at the bottom of both ends of the passage body 1, an air exhaust pipe 12 communicated with the air exhaust inlet 11, an air exhaust fan 13, a third filtration and disinfection device 14, and an air exhaust outlet 15. The air inside the passage body 1 can sequentially flow to the outside of the epidemic prevention passage through the air exhaust inlet 11, the air exhaust pipe 12, the air exhaust fan 13, the third filtration and disinfection device 14, and the air exhaust outlet 15. The exhausted air is air that has been filtered and disinfected and will not cause secondary pollution.

[0028] As a preferred embodiment, an air inlet box is provided at the top of the passage body 1, and air inlets 2 are opened at both ends of the air inlet box. The air inlet fan 3 is located in the air inlet box. The top wall and the side wall of the passage body 1 are provided with a hollow sandwich layer, and the sandwich layer includes an upper layer and a lower layer. The upper layer and the lower layer are partitioned so that air cannot flow between them. The top of the upper layer is communicated with the outlet of the air inlet fan 3, and the upper layer is also communicated with the first nozzle group 5. A first filtration and disinfection device 4 is arranged in the upper layer, and the first filtration and disinfection device 4 is connected to the outlet of the air inlet fan 3. The external fresh air is pressurized by the air inlet fan 3, then the viruses and bacteria are killed by the first filtration and disinfection device 4, and then it flows into the upper layer. The clean air flow is sent into the upper area 101 at a high speed through the first nozzle group 5 communicated with the upper layer;

[0029] The air return opening 6 is located on a side wall inside the passage body 1. The air return opening 6 is communicated with the lower layer of the sandwich layer through an air return fan 7. The bottom of the lower layer is communicated with the outlet of the air return fan 7. The lower layer is also communicated with the second nozzle group 10. And a second filtering and disinfection device 8 is arranged in the lower layer. An air duct 9 for communicating the lower layers of the sandwich layers on the opposite side walls is arranged in the upper layer. The second filtering and disinfection device 8 can be connected to the outlet of the air return fan 7. Part of the air processed by the second filtering and disinfection device 8 is directly sprayed to the lower area 102 through the nozzles on its side wall, and the other part flows into the lower layer of the sandwich layer on the other side wall through the air duct 9 and is sprayed to the lower area 102 by the nozzles installed on this side wall, forming an effect of high-speed counter blowing of clean air flows in the lower area 102.

[0030] The air inlet fan 3 and the air return fan 7 are turned on simultaneously. The nozzles installed on the top wall in the first nozzle group 5 spray downward, and the nozzles installed on the side walls of the upper area spray relatively from both sides. The air flow in the upper area 101 continuously flows downward. The positive pressure generated by the air flow from the upper area causes the air return circulation to occur only in the lower area.

[0031] Exhaust boxes are arranged at the bottom edges at both ends of the passage body 1. The exhaust boxes are provided with exhaust air inlets 11 and are communicated with the exhaust air pipes 12 of the exhaust boxes. The exhaust air pipes 12 are connected to the exhaust fans 13. While the fresh air is input into the passage body 1 by the air inlet system, the exhaust fans 13 lead the air out of the epidemic prevention passage, and by adjusting the pressure difference inside and outside the passage body 1, it is ensured that the upper area 101 inside the passage body 1 is always the introduced fresh air.

[0032] In this embodiment, the first filtering and disinfection device 4, the second filtering and disinfection device 8, and the third filtering and disinfection device 14 are one or any combination of two of the filtering and disinfection devices such as primary filters, high-efficiency filters, high-pressure sterilization filters, and ultraviolet disinfection devices, and are used for air sterilization, disinfection, and purification.

[0033] The epidemic prevention method of the present invention is realized in the following way:

[0034] For each nozzle of the first nozzle group 5 and the second nozzle group 10, a nozzle with an adjustable jet direction is selected, and the jet air flow direction can be freely adjusted according to the height of the person or the key purification area to ensure the optimal disinfection, sterilization and purification effects. After a person enters the epidemic prevention passage, the pressure difference between the air inside the passage body 1 and the outside air is controlled through the air inlet system, the air return system and the air exhaust system, and the air flow velocity and direction inside the passage body 1 are controlled to form two upper and lower air areas. The first nozzle group 1 of the air inlet system sends the external fresh air treated by the first filtration and disinfection device 4 into the upper area 101 inside the passage body 1, sprays and purifies the upper area 101 and disinfects each body part of the person in the upper area. The second nozzle group 10 of the air return system circulates and sends the air treated by the second filtration and disinfection device 8 into the lower area 102 of the passage body 1, sprays and purifies the lower area 102 and disinfects each body part of the person in the lower area. In this way, the disinfection by spraying of the person entering the passage body 1 is completed. The first nozzle group 5 continuously blows the air in the upper area 101 to the lower area 102 to ensure that the air inhaled by the person is the external fresh air treated by the first filtration and disinfection device 4 in the upper area 101.

[0035] In the present invention, the nozzles on the side walls are arranged oppositely to ensure the blowing and rinsing effect of the counter blowing.

[0036] The height of the epidemic prevention passage is determined according to the height of the users. When the internal height of the passage body for adults is 1.9 meters and for children is 1.6 meters, it can be adjusted according to the needs in other usage scenarios. The height of the upper area 101 ≥ 2 / 5 of the internal height of the passage body 1, that is, the body parts above the armpits of the person inside the passage body 1 are located in the upper area 101.

[0037] The above embodiments do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited thereto. All kinds of modifications, substitutions or changes made to the above structure of the present invention according to the above content of the present invention or according to the common technical knowledge and conventional means in the art, without departing from the above basic technical idea of the present invention, shall fall within the protection scope of the present invention.

Claims

1. An epidemic prevention passageway, characterized in that: It includes a channel body (1), and the channel body (1) is provided with an air inlet system, an air return system and an air exhaust system. The channel body (1) is divided into an upper region (101) and a lower region (102). The air inlet system includes an air inlet (2), an air inlet fan (3), a first filtration and disinfection device (4), and a first nozzle group (5) composed of multiple nozzles installed on the top wall of the channel body (1) and the side walls of the upper region (101). The air inlet fan (3) introduces external fresh air through the air inlet (2), and the external fresh air is sequentially passed through the air inlet (2), the air inlet fan (3), the first filtration and disinfection device (4), and the first nozzle group (5) to spray and purify the upper region (101) of the channel body (1); The air return system includes an air return port (6), an air return fan (7), a second filtration and disinfection device (8), and a second nozzle group (10) composed of multiple nozzles installed on the side walls of the lower region (102) of the channel body (1). The air in the channel body (1) is sequentially passed through the air return port (6), the air return fan (7), the second filtration and disinfection device (8), and the second nozzle group (10) to circularly spray and purify the lower region (102) of the channel body (1); The air exhaust system includes an air exhaust inlet (11) provided at the bottom of both ends of the channel body (1), an exhaust duct (12) communicated with the air exhaust inlet (11), an exhaust fan (13), a third filtration and disinfection device (14), and an air exhaust outlet (15). The air discharged from the inside of the channel body (1) flows to the outside of the epidemic prevention channel through the air exhaust inlet (11), the exhaust duct (12), the exhaust fan (13), the third filtration and disinfection device (14), and the air exhaust outlet (15) in sequence.

2. The epidemic prevention passageway according to claim 1, characterized in that: The top wall and side walls of the channel body (1) are provided with a hollow sandwich layer, and the sandwich layer includes an upper layer and a lower layer. The upper layer and the lower layer are partitioned so that air cannot flow through each other. The top of the upper layer is communicated with the outlet of the air inlet fan (3), and the upper layer is also communicated with the first nozzle group (5), and the first filtration and disinfection device (4) is arranged inside the upper layer; The bottom of the lower layer is communicated with the outlet of the air return fan (7), the lower layer is also communicated with the second nozzle group (10), and the second filtration and disinfection device (8) is arranged in the lower layer; A duct (9) is arranged inside the upper layer for communicating the lower layers of the sandwich layers on two opposite side walls.

3. The epidemic prevention passageway according to claim 2, characterized in that: An air inlet box body is provided at the top of the channel body (1), and the air inlets (2) are opened at both ends of the air inlet box body. The air inlet fan (3) is located in the air inlet box body.

4. The epidemic prevention passageway according to claim 3, characterized in that: The air return port (6) is located on one side wall inside the channel body (1), and the air return port (6) is communicated with the lower layer of the sandwich layer through the air return fan (7).

5. The epidemic prevention passageway according to claim 4, characterized in that: Exhaust box bodies are arranged at the bottom edges of both ends of the channel body (1), the air exhaust inlets (11) are opened in the exhaust box bodies, the exhaust box bodies are communicated with the exhaust duct (12), and the exhaust duct (12) is connected to the exhaust fan (13).

6. The epidemic prevention passageway according to claim 5, characterized in that The first filtering and disinfection device (4), the second filtering and disinfection device (8) and the third filtering and disinfection device (14) are one or any combination of two of filtering and disinfection devices such as primary filters, high-efficiency filters, high-pressure sterilization filters, ultraviolet disinfection devices, etc., and are used for air sterilization, disinfection and purification.

7. An epidemic prevention method using any one of the epidemic prevention passageways according to claims 1 to 6, characterized in that The nozzles of the first nozzle group (5) and the second nozzle group (10) are nozzles with adjustable spraying directions. The pressure difference between the air inside the channel body and the external air is controlled through the air inlet system, the air return system and the air exhaust system, and the air flow velocity and direction inside the channel body are controlled to form upper and lower air regions. The first nozzle group (5) of the air inlet system sends the external fresh air treated by the first filtering and disinfection device (4) into the upper region (101) inside the channel body (1), and the second nozzle group (10) of the air return system circulates and sends the air treated by the second filtering and disinfection device (8) into the lower region (102) of the channel body (1) to spray and disinfect the personnel entering the channel body (1). Moreover, the first nozzle group (5) continuously blows the air in the upper region (101) to the lower region (102) to ensure that the air inhaled by people is the external fresh air treated by the first filtering and disinfection device (4) in the upper region (101).

8. The epidemic prevention method according to claim 7, characterized in that The height of the upper region (101) ≥ 2 / 5 of the internal height of the channel body (1), so that the body parts above the armpits of people inside the channel body (1) are located in the upper region (101).

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