Plasma-based personnel disinfection tunnel and method

Abstract

The application discloses a personnel disinfection channel based on plasma and a disinfection method, and belongs to the technical field of disinfection devices. The disinfection channel comprises an air dust removal chamber, a negative ion charging chamber and a plasma atomization disinfection chamber, each chamber is independent of each other, the chambers are spaced apart from each other by a separation device, a non-contact body temperature measuring device is arranged at the entrance of the whole channel, and the channel entrance is opened only when the measured body temperature of the personnel entering the channel is lower than the set temperature, so that the visiting personnel can enter. The personnel disinfection channel carries out three-step processes of preliminary dust removal, charging and efficient sterilization and disinfection on the visiting personnel entering the channel, improves the sterilization and disinfection efficiency through the combination of the charging technology and the plasma activated fog technology, and can fully remove and kill bacteria, viruses and the like on the surface of the body of the visiting personnel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of disinfection devices, and more particularly relates to a personnel disinfection channel based on plasma and a disinfection method. BACKGROUND

[0002] The spread of respiratory infectious diseases makes people pay more and more attention to their own health and air cleanliness. Especially in autumn and winter and in indoor places with dense human flow, influenza is extremely easy to break out. The existing epidemic prevention measures for public places with more people are mainly to wear medical masks, but wearing masks cannot achieve complete epidemic prevention effect, and there is still a certain possibility of infection, and various influenza repeated many times have verified this.

[0003] In order to prevent cross infection in public places, at present, large cities will regularly spray disinfection in large public places, and this disinfection method is low in efficiency and high in work intensity. At present, most public places in China only conduct temperature measurement on visitors, and do not conduct sterilization and disinfection on the surface of visitors. With the flow of personnel, viruses will still be brought into public places and cause infection, so it is very important to disinfect the surface of visitors in public places.

[0004] Most of the existing personnel disinfection channels also use traditional atomization disinfection methods, which have small drug liquid pressure, low atomization degree, poor disinfection effect, waste resources, are not practical in public places with high fluidity, and still have the risk of cross infection due to incomplete sterilization. SUMMARY

[0005] In view of the defects or improvement needs of the prior art, the present application provides a personnel disinfection channel based on plasma, which aims to combine negative ion charging and plasma activated mist disinfection to improve the sterilization and disinfection efficiency on the surface of personnel's body and clothes, so as to solve the technical problems of waste resources and incomplete sterilization and disinfection of traditional atomization disinfection.

[0006] To achieve the above-mentioned purpose, the present application provides a personnel disinfection channel based on plasma, which comprises: an air dust removal chamber, a negative ion charging chamber, a plasma atomization disinfection chamber and a non-contact temperature measurement controller; the air dust removal chamber, the negative ion charging chamber and the plasma atomization disinfection chamber are arranged in sequence and side by side to form a disinfection channel;

[0007] The non-contact temperature measurement controller is arranged outside the entrance of the air dust removal chamber and comprises a non-contact temperature measurement device and an entrance control device. The entrance control device receives the body temperature of the visitor collected by the non-contact temperature measurement device and controls the opening and closing of the channel entrance according to the body temperature. When the temperature measurement device collects the body temperature of the personnel below the preset temperature, the entrance control device will control the opening of the channel entrance;

[0008] The air dust removal chamber is provided with dust removal equipment on both sides of the entrance and the top of the chamber, the dust removal equipment is a fan and a plasma plate-plate device, air circulation is realized through the fan, dust particles in the air are charged and collected through the plasma plate-plate device loaded with positive high-voltage direct current, preliminary air purification and dust removal are realized, and clean air is blown in;

[0009] The negative ion charging chamber is provided with a negative ion generating device at the top end, the negative ion generating device is a honeycomb needle cylinder array, a large amount of negative ions are generated by loading negative high-voltage direct current, the charge density in the air is increased, and the body and clothes of the visitor are loaded with negative static electricity;

[0010] The plasma atomization disinfection chamber is provided with a face recognition device, a plasma atomization disinfection device and a liquid suction device, the face recognition device is used for identifying the position of the face, so as to control the spraying height and avoid spraying mist to the face, the plasma atomization disinfection device comprises a positive pulse driven plasma discharge device and a plurality of ultrasonic atomization devices, the spraying nozzles of the ultrasonic atomization devices are arranged on the two side walls of the atomization disinfection chamber, the plasma discharge device is also arranged on the side of the atomization disinfection chamber and completely covers the atomization devices, and the liquid suction device is arranged at the bottom of the atomization disinfection chamber. The chamber activates the mist droplets through the plasma discharge device, so that the mist droplets have sterilization and disinfection effect and are loaded with positive charges, and the body and clothes of the visitor are efficiently sterilized and disinfected through electrostatic adsorption.

[0011] Preferably, the plasma plate-plate device is composed of a metal plate and an outer frame made of an insulating material, the inner side of the outer frame is provided with a zigzag-shaped groove, the zigzag-shaped tips are not connected and are provided with a preset interval, and the metal plate is embedded and fixed on the groove.

[0012] Preferably, the negative ion generating device is composed of tungsten needles and a hexagonal columnar open frame made of an insulating material, one end of the frame is open towards the top of the negative ion charging chamber (2), the other end is open towards the ground, the tungsten needles are fixed in the frame without tips and are connected through metal wires, the tips of the tungsten needles are towards the center of the frame, and the frames are arranged in a honeycomb shape.

[0013] Preferably, the plasma discharge device is composed of a metal plate frame, a metal column and a frame made of an insulating material, the metal plate frame is a hexagonal columnar structure, is arranged in a honeycomb shape and is closely attached to the insulating frame at one end, the metal column is fixed on the insulating frame and is at the center of the hexagonal columnar metal plate, and the insulating frame is a hollow structure.

[0014] The application also provides a disinfection method of a personnel disinfection channel based on plasma, comprising the following steps:

[0015] (1) Before entering the disinfection channel, a non-contact infrared temperature measuring device installed outside the dust removal chamber measures the body temperature of the visitor;

[0016] (2) The temperature measuring device converts the measured body temperature of the person into an electrical signal and transmits it to the entrance control device;

[0017] (3) The entrance control device determines whether the person is healthy according to the body temperature electrical signal. When the body temperature of the person is lower than the preset temperature 37℃, the entrance control device opens the passage entrance for the visitor to enter the passage. When the body temperature of the person is higher than the preset temperature, the passage entrance is not opened and the whistle alarm device is triggered to remind the staff to lead the visitor to isolation observation and other related measures.

[0018] (4) When the visitor's body temperature is normal and enters the air dust removal chamber, the fan and the plasma plate-plate device in the dust removal chamber start to work. The air is purified after passing through the plasma plate-plate device, and the dust and aerosol attached to the clothes of the visitor are blown away, achieving a preliminary dust removal effect.

[0019] (5) After the visitor passes through the air dust removal chamber, the visitor enters the negative ion charging chamber, and the negative ion generating device starts to work. The negative ion generating device is driven by a negative high-voltage direct current power supply. The needle cylinder array in the negative ion generating device can discharge uniformly in a large area, greatly improving the negative ion concentration in the charging chamber, so as to charge the surface of the clothes of the visitor with negative ions.

[0020] (6) After the visitor passes through the negative ion charging chamber, the visitor enters the plasma atomization disinfection chamber, and the face recognition device recognizes the face position, so as to control the ultrasonic atomization device and the plasma discharge device below the neck of the visitor to start working. The ultrasonic atomization device atomizes and discharges pure water, and the mist droplets load a large amount of high-energy active substances and positive ions after passing through the plasma discharge device. These mist droplets will be efficiently attached to the surface of the clothes of the visitor through the electrostatic attraction of positive and negative ions, and the high-energy active substances will perform efficient and low-cost sterilization and disinfection on the visitor. The liquid generated by the enrichment of the mist droplets will be discharged from the liquid suction device at the bottom of the disinfection chamber.

[0021] Through the above technical solutions of the present application, the following advantages can be achieved compared with the prior art

[0022] Beneficial effects:

[0023] (1) The non-contact temperature measuring device used in the present application can detect the body temperature of the person entering the passage. Only when the body temperature is normal can the person enter the passage. The non-contact temperature measuring device also ensures that the person will not attach bacteria to the device when measuring the temperature, thereby reducing the risk of cross infection.

[0024] (2) The positive high-voltage direct-current driven plasma plate-plate device used in the dust removal chamber effectively improves the dust removal efficiency of the air blown into the chamber, can more efficiently blow away the dust and aerosol on the surface of the clothes of the visitors, and achieves better dust removal effect.

[0025] (3) The negative high-voltage direct-current driven needle array cylinder used in the charging chamber can uniformly discharge in a large area, effectively improves the charge density in the space of the charging chamber, and effectively charges the surface of the clothes of the visitors. The face recognition device in the atomization disinfection chamber can recognize the face position, control the activated mist droplet ejection height, so that the mist droplets will not be sprayed to the face of the personnel in large quantities. At the same time, the positive pulse driven plasma discharge device used in the atomization disinfection chamber can activate ordinary mist droplets, so that they have sterilization and disinfection capacity and carry positive charges. The activated mist droplets are efficiently attached to the surface of the clothes of the human body by electrostatic adsorption, which saves resource cost while having higher sterilization and disinfection efficiency.

[0026] (4) The personnel disinfection channel provided by the application can ensure that the bacteria and viruses carried on the surface of the visitors are fully inactivated and removed, and can avoid the risk of cross infection of the personnel, save manpower and material resources, and be suitable for large public places such as shopping malls, hospitals and teaching buildings. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a personnel disinfection channel structure schematic diagram based on plasma provided by the application;

[0028] Figure 2 is a (a) top view and (b) front view of a dust removal chamber in a personnel disinfection channel of the application;

[0029] Figure 3 is a structure schematic diagram of a plasma plate-plate device in a dust removal chamber in a personnel disinfection channel of the application;

[0030] Figure 4 is a control block diagram of an entrance of a personnel disinfection channel of the application;

[0031] Figure 5 is a structure schematic diagram of a negative ion generating device in a negative ion charging chamber in a personnel disinfection channel of the application;

[0032] Figure 6 is a front view of a plasma atomization disinfection chamber in a personnel disinfection channel of the application;

[0033] Figure 7 is a structure schematic diagram of a plasma discharge device in a plasma atomization disinfection chamber in a personnel disinfection channel of the application;

[0034] Figure 8is the personnel disinfection channel in the invention. The purification effect diagram of the plasma equipment in the dust removal chamber on aerosol particles in the air;

[0035] Figure 9 is the personnel disinfection channel in the invention. The purification effect diagram of the plasma equipment in the dust removal chamber on aerosol particles in the air;

[0036] Figure 10 is the personnel disinfection channel in the invention. The purification effect diagram of the plasma equipment in the dust removal chamber on aerosol particles in the air;

[0037] Reference signs:

[0038] 1-air dust removal chamber; 2-negative ion charging chamber; 3-plasma atomization disinfection chamber; 4-non-contact temperature measurement device; 5-inlet control device; 6-plasma plate-plate device; 7-fan; 8-negative ion generating device; 9-plasma atomization disinfection device; 10-face recognition device; 11-liquid suction device; 12-metal plate; 13-needle array cylinder; 14-ultrasonic atomization device; 15-plasma discharge device; 16-metal column; 17-hexagonal metal plate frame. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will further describe and explain the invention content in combination with the drawings of the embodiments of the present application. It should be noted that the structural proportions shown in the drawings of the present application are only used to illustrate the content of the embodiments, and are not used to limit the limiting conditions of the implementable present application. The described embodiments in the present application are part of the embodiments, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0040] The present application provides a personnel disinfection channel based on plasma, comprising: an air dust removal chamber, a negative ion charging chamber, a plasma atomization disinfection chamber and a non-contact temperature measurement controller; the air dust removal chamber, the negative ion charging chamber and the plasma atomization disinfection chamber are arranged in sequence and side by side to constitute the disinfection channel.

[0041] The non-contact temperature measurement controller is arranged outside the inlet of the air dust removal chamber, comprising a non-contact temperature measurement device and an inlet control device. The inlet control device receives the body temperature of the visitor collected by the non-contact temperature measurement device and controls the opening and closing of the channel inlet according to the body temperature. When the temperature measurement device collects the body temperature of the visitor below the preset temperature, the inlet control device will control the opening of the channel inlet.

[0042] The air dust removal chamber is provided with dust removal equipment on both sides of the entrance and the top of the chamber, the dust removal equipment is a fan and a plasma plate-plate device, air circulation is realized through the fan, dust particles in the air are charged and collected through the plasma plate-plate device loaded with positive high-voltage direct current, preliminary air purification and dust removal are realized, and clean air is blown in.

[0043] The negative ion charging chamber is provided with a negative ion generating device at the top end, the negative ion generating device is a honeycomb needle cylinder array, a large amount of negative ions are generated through loading negative high-voltage direct current, the charge density in the air is improved, and negative static electricity is loaded on the surface of the body and clothes of the visitor;

[0044] The plasma atomization disinfection chamber is provided with a face recognition device, a plasma atomization disinfection device and a liquid suction device, the face recognition device is used for recognizing the position of the face, so as to control the spraying height and avoid spraying mist to the face, the plasma atomization disinfection device comprises a positive pulse driven plasma discharge device and a plurality of ultrasonic atomization devices, the spraying nozzles of the ultrasonic atomization devices are arranged on the two side walls of the atomization disinfection chamber, the plasma discharge device is also arranged on the side wall of the atomization disinfection chamber and completely covers the atomization devices, and the liquid suction device is arranged at the bottom of the atomization disinfection chamber. The chamber activates the mist droplets through the plasma discharge device, so that the mist droplets have sterilization and disinfection effect and are loaded with positive charges, and the surface of the body and clothes of the visitor is efficiently sterilized and disinfected through electrostatic adsorption.

[0045] Please refer to the accompanying drawings Figure 1 The personnel disinfection channel is formed in a rectangular structure by a bottom plate, a top plate and four surrounding partition plates, the channel is divided into an air dust removal chamber 1, a negative ion charging chamber 2 and a plasma atomization disinfection chamber 3 by an isolation door, the air tightness of the chamber 1 is ensured except the ventilation pipe opening, and the airtightness of the space in the chambers 2 and 3 is ensured. The personnel disinfection channel can be used at the entrance of a public place such as a shopping mall or a teaching building, and the visitor enters the indoor through the channel.

[0046] Preferably, the disinfection channel is 5 m long, 2 m wide and 3 m high, and the cavities of the three inner chambers are 1.5 m long respectively.

[0047] Please refer to the accompanying drawings Figures 1-3The air dust removal chamber 1 in the personnel disinfection passage of the present application mainly comprises a wave-shaped plasma plate-plate purification device 6 and a fan 7, the wave-shaped plasma plate-plate device 6 mainly comprises staggered metal plates 12, and the non-contact temperature measuring equipment 4 is arranged outside the dust removal chamber. In the embodiment, the wave-shaped plasma plate-plate device 6 is arranged at the side of the dust removal chamber, and the fan 7 is arranged at the top of the dust removal chamber. The air circulation in the dust removal chamber 1 is realized through the fan 7, and the dust removal and purification of the air are realized through the wave-shaped plasma plate-plate device 6. The visitors enter the disinfection passage through the dust removal chamber entrance, and the dust aerosols on the surface of the clothes are blown away in the dust removal chamber, so that the preliminary dust removal effect is achieved.

[0048] Specifically, the dust removal chamber entrance door is 1.3 m wide and 2 m high, and the non-contact temperature measuring equipment 4 is arranged above the dust removal chamber entrance.

[0049] Specifically, the fan 7 rotates at a speed of 2000-3000 r / min, and the indoor air speed is 2-4 m / s.

[0050] Specifically, the wave-shaped plasma plate-plate device 6 is 30 cm long and wide, and is arranged at the side of the dust removal chamber; the metal plate 12 is 25 cm long, 2.5 cm wide and 1.5 mm thick, and the metal plates 12 are staggered in a wave shape. The whole device is driven by a 15 kV positive high-voltage direct-current power supply.

[0051] Specifically, the metal plates 12 in the wave-shaped plasma plate-plate device 6 are connected to positive direct-current high-voltage and ground, wherein the high-voltage plate can effectively charge the aerosol particles in the air, the ground plate collects the charged aerosol particles through the electric field formed between the high-voltage plate and the ground plate, so that the dust removal effect is achieved, and the wave-shaped arrangement design can effectively increase the contact area of the plate and the air, thereby increasing the charging and collecting efficiency of the dust and aerosol particles in the air.

[0052] Referring to the accompanying drawings Figure 1 , Figure 2 and Figure 4 The personnel disinfection passage of the present application further comprises non-contact temperature measuring equipment 4 and entrance control device 5. In the embodiment, the non-contact temperature measuring equipment 4 can be an infrared thermometer, which is arranged outside the dust removal chamber 1 to collect the temperature information of the visitors and is connected to the entrance control device 5 through an electric signal. The entrance control device 5 receives the temperature information electric signal and controls the passage entrance switch according to the temperature information, and the entrance control device 5 also controls the opening of each isolation door according to the preset time.

[0053] Specifically, in an embodiment, the non-contact temperature measuring device 4 is used to detect the temperature of the visitor before entering the disinfection channel, and a voltage signal is generated and transmitted to the entrance control device 5. When the temperature of the visitor is lower than the preset value, the entrance control device 5 controls the opening of the channel entrance to allow the visitor to enter the disinfection channel. Otherwise, the entrance control device 5 refuses to open the channel and triggers the whistle alarm device, and the staff should immediately lead the person to the isolation observation area.

[0054] Referring to the accompanying Figure 1 and Figure 5 , the negative ion charging chamber 2 in the personnel disinfection channel of the present application mainly comprises a negative ion generating device 8, which mainly comprises a honeycomb-shaped needle array cylinder 13. After passing through the air dust removal chamber 1, the visitor enters the negative ion charging chamber 2 through the isolation door, and at the same time the negative ion generating device 8 starts to work. The honeycomb-shaped needle array cylinder 13 can uniformly discharge to generate a large number of negative ions enriched on the surface of the clothes of the visitor.

[0055] Specifically, the negative ion generating device 8 has a length and width of 1m, the cross section of the needle array cylinder is a regular hexagon, the diameter of the inscribed circle of the regular hexagon is 10cm, the needle array cylinder is arranged in a honeycomb shape to form the negative ion generating device, and there are 3 weeks of different length of needles in the cylinder, each week of needles has the same length and is uniformly arranged at an interval of 120°. The tungsten needle with a curvature radius of 2-8μm is selected, and the length is 2cm, 3cm and 4cm respectively. The whole device is driven by a 15kV negative high-voltage direct current power supply, and the discharge power is 5-7W.

[0056] Specifically, the negative ion generating device can increase the negative ion concentration in the whole charging chamber to 10 4 -10 7 cm 3 , and the negative ion concentration at different positions in the chamber is determined by the distance between the position and the negative ion generating device.

[0057] The face recognition device can recognize the position of the face, so as to control the ultrasonic atomization device and the plasma discharge device below the neck of the visitor to start working. The ultrasonic atomization device atomizes and discharges pure water, and the mist droplets load a large amount of high-energy active substances and positive ions after passing through the plasma discharge device. These mist droplets will be efficiently attached to the surface of the clothes of the visitor by the electrostatic attraction of positive and negative ions, and the high-energy active substances will perform efficient and low-cost sterilization and disinfection on the visitor. The liquid generated by the enrichment of the mist droplets will be discharged from the liquid suction device at the bottom of the disinfection chamber.

[0058] Referring to the accompanying Figure 1 , Figure 6 and Figure 7The personnel disinfection channel plasma atomization disinfection chamber 3 of the present application mainly comprises a plasma atomization disinfection device 9, a face recognition device 10 and a liquid suction device 11, wherein the plasma atomization disinfection device 9 mainly comprises an ultrasonic atomization device 14 and a plasma discharge device 15, and the plasma discharge device 15 mainly comprises a honeycomb-shaped metal column 16 and a hexagonal metal plate frame 17. After the visitor passes through the negative ion charging room 2, the visitor enters the plasma atomization disinfection chamber 3 through the isolation door, and the face recognition device 9 recognizes the face position, so as to control the ultrasonic atomization device 14 and the plasma discharge device 15 below the neck of the visitor to start working. The ultrasonic atomization device 14 generates mist droplets, and the mist droplets pass through the plasma discharge device 15 to form high-activity disinfection mist droplets loaded with positive ions. The charged disinfection mist droplets will be quickly attracted to the surface of the clothes of the personnel charged in the negative ion charging room 2, so as to achieve the effect of high-efficiency sterilization and disinfection. The liquid formed after the enrichment of the generated mist droplets will be discharged from the liquid suction device 11 at the bottom of the chamber.

[0059] Specifically, the ultrasonic atomization device 14 is installed on the walls on both sides of the disinfection chamber 3, and the plasma discharge device 15 is installed on the side of the ultrasonic atomization device nozzle and covers all the atomization devices, so as to ensure that the atomized liquid droplets can effectively pass through the plasma discharge device.

[0060] Specifically, the plasma discharge device 15 is driven by using a 10kV positive pulse power supply, the pulse frequency of the power supply is 1kHz, the half-height pulse width is 2-3μs, the pulse front is 0.3-0.5μs, the pulse tail is 4-4.5μs, and the discharge power is 6-8W.

[0061] Specifically, the metal column 16 is connected to the positive pulse output, and the metal plate frame 17 is connected to the ground. A large amount of low-temperature plasma will be formed between the metal column and the metal plate frame. A large amount of high-energy electrons, positive ions and active groups exist in the low-temperature plasma. The mist droplets generated by the ultrasonic atomization device 14 pass through this area, and a large amount of high-energy active substances and positive ions will be loaded in the mist droplets. After the mist droplets are activated by the plasma device, they will contain HONO2, NO2 - , H2O2, wherein the concentration of HONO2 can reach 150-200mg / L, and the concentration of NO2 -and H2O2 concentration can reach 40-80mg / L. After passing through the charged chamber, the clothes of the visitors are loaded with a large number of negative ions, which can quickly attract high-energy active fog droplets with positive ions. The fog droplets contain a large number of active particles and groups, and other highly oxidizing substances, which can fully destroy the virus protein and nucleic acid structure to kill bacteria and viruses and other microorganisms. At the same time, when the positive and negative charged ions contact the surface of the bacteria, they interact with the numerous charged groups in the bacterial cell wall to induce physiological changes in the cell wall structure. At the same time, the chemical interaction between the bipolar ions produces hydroxyl radicals in the cell wall, which can effectively destroy proteins and lipids, leading to the lysis and death of bacterial cells. Based on the above principles and steps, the plasma atomization disinfection device can quickly, efficiently and at low cost kill bacteria and viruses on the surface of the clothes of the visitors.

[0062] Referring to the accompanying Figure 8 The wave-shaped plasma plate-plate device in the dust removal chamber in the present application was tested, and the results showed that the purification efficiency of the wave-shaped plasma plate-plate device provided by the present application on PM1, PM2.5 and PM10 reached 85.01%, 84.95% and 83.69% respectively under the above preferred parameters, while the average purification efficiency of high-end air purifiers on the market was about 60%. The overall purification efficiency of the wave-shaped plasma plate-plate device provided by the present application was improved by about 24% compared with the air purifiers on the market.

[0063] Referring to the accompanying Figure 9 The fabric surface disinfection test of the plasma atomization disinfection chamber in the present application was carried out. The GB / T20944.3-2008 antibacterial standard was used, the test bacteria were Staphylococcus aureus, Escherichia coli and Candida albicans, the artificial bacteria-infected objects were used as the disinfection objects, and the plastic boxes covered with cotton and polyester fibers were used as the representatives for observing the disinfection effect. The results showed that the disinfection device provided by the present application had a disinfection rate of 99.9% or more for the test bacteria, which was significantly improved compared with the bacterial disinfection efficiency of the ordinary disinfection liquid atomization disinfection device on the market. At the same time, the plasma atomization disinfection device provided by the present application does not need disinfection liquid, and can use ordinary pure water, which can save cost while improving the disinfection efficiency.

[0064] Referring to the accompanying Figure 10 The present application provides a disinfection method based on a plasma personnel disinfection channel, which comprises the following steps:

[0065] 1. Before entering the disinfection channel, the non-contact infrared temperature measuring equipment installed outside the dust removal chamber measures the body temperature of the visitors;

[0066] 2. The temperature measuring equipment converts the measured body temperature of the visitors into an electrical signal and transmits it to the entrance control device;

[0067] 3. The entrance control device determines whether the person is healthy according to the body temperature electric signal, when the body temperature of the person is lower than the preset temperature 37 DEG C, the entrance control device will open the channel entrance for the visitor to enter the channel; when the body temperature of the person is higher than the preset temperature, the channel entrance is not opened and the whistle alarm device is triggered, reminding the staff to lead the visitor to isolation observation and other related measures;

[0068] 4. When the visitor's body temperature is normal and enters the air dust removal chamber, the fan and the wave-shaped plasma plate-plate device in the dust removal chamber start to work, wherein the wave-shaped plasma plate-plate device is driven by a positive high-voltage DC power supply. After the air passes through the wave-shaped plasma plate-plate device, the dust and aerosol attached to the clothes of the visitor are blown away, achieving a preliminary dust removal effect;

[0069] 5. After the visitor passes through the air dust removal chamber, the visitor enters the negative ion charging chamber, and the negative ion generating device starts to work, and the negative ion generating device is driven by a negative high-voltage DC power supply. The needle corona array in the negative ion generating device can uniformly discharge in a large area, and the negative ion concentration in the charging chamber is greatly improved, so as to charge the surface of the clothes of the visitor with negative ions.

[0070] 6. After the visitor passes through the negative ion charging chamber, the visitor enters the plasma atomization disinfection chamber, and the face recognition device recognizes the face position, so as to control the ultrasonic atomization equipment and the plasma discharge device below the neck of the visitor to start to work, wherein the plasma discharge device is driven by a positive pulse power supply. The ultrasonic atomization equipment atomizes and discharges pure water, and the mist droplets load a large amount of high-energy active substances and positive ions after passing through the plasma discharge device. These mist droplets will be efficiently attached to the surface of the clothes of the visitor through the electrostatic attraction of positive and negative ions, and the high-energy active substances will perform efficient and low-cost sterilization and disinfection on the visitor. The liquid generated by the enrichment of the mist droplets will be discharged from the liquid suction device at the bottom of the disinfection chamber.

[0071] The above is only one preferred embodiment of the present application, and the embodiments selected and described in the specification are better to understand the principles and practical applications of the present application, so that those skilled in the art can apply the present application, and the embodiments do not limit the specific embodiments of the present application, and the scope of the present application cannot be limited by the specific embodiments. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A plasma-based personnel disinfection channel, characterized in that, include: An air dust removal chamber (1), a negative ion charging chamber (2), a plasma atomization disinfection chamber (3), and a non-contact temperature controller (4) are arranged side by side to form a disinfection channel. The non-contact temperature controller (4) is located outside the entrance of the air dust removal chamber (1) and is used to collect the body temperature of visitors and control the entrance switch of the channel accordingly. The air dust removal chamber (1) achieves air purification and dust removal by setting a plasma dust removal device loaded with positive high voltage DC and combines it with a fan to achieve indoor air circulation. The negative ion charging chamber (2) achieves negative static electricity on the surface of the clothing of visitors by loading a negative high voltage DC negative ion generating device. The plasma atomization disinfection chamber (3) activates the droplets with a plasma device, so that the droplets have a bactericidal and disinfection effect and are loaded with positive charge. The droplets are sterilized and disinfected on the surface of the clothing of visitors through electrostatic adsorption. The air dust removal chamber (1) is equipped with a fan on the top and wave-shaped plasma plate-plate devices on both sides of the inlet. The fan enables the indoor air to circulate and collects dust particles in the air by loading a wave-shaped plasma plate-plate device with positive high voltage DC, so as to achieve preliminary air purification and dust removal and blow in clean air. The negative ion generating device at the top of the negative ion charging chamber (2) consists of a tungsten needle and a hexagonal columnar open frame made of insulating material. One end of the frame opens towards the top of the negative ion charging chamber (2), and the other end opens towards the ground. The non-tip of the tungsten needle is fixed inside the frame and connected by a metal wire. The tip of the tungsten needle faces the center of the frame, and the frame is arranged in a honeycomb pattern.

2. The plasma-based personnel disinfection channel according to claim 1, characterized in that, When the temperature measurement device detects that the body temperature of a person is lower than the preset temperature, the entrance control device will open the entrance to the passage.

3. The plasma-based personnel disinfection channel according to claim 1, characterized in that, The wave-shaped plasma plate-plate device consists of a metal plate and an outer frame made of insulating material. The inner side of the outer frame is provided with a zigzag groove with the tips of the zigzag lines not connected and a preset spacing. The metal plate is embedded and fixed in the groove.

4. The plasma-based personnel disinfection channel according to claim 1, characterized in that, The plasma atomization disinfection chamber (3) is equipped with a face recognition device, a plasma atomization disinfection device, and a liquid suction device. The face recognition device is used to identify the location of a face, thereby controlling the spray height and avoiding spraying droplets onto the face. The plasma atomization disinfection device includes a positive pulse driven plasma discharge device and several ultrasonic atomization devices. The nozzles of the ultrasonic atomization devices are located on both sides of the atomization disinfection chamber. The plasma discharge devices are also located on the sides of the atomization disinfection chamber and completely cover the atomization devices. The liquid suction device is located at the bottom of the atomization disinfection chamber.

5. The plasma-based personnel disinfection channel according to claim 4, characterized in that, The plasma discharge device consists of a metal plate frame, metal columns, and a frame made of insulating material. The metal plate frame is a hexagonal columnar structure, arranged in a honeycomb pattern, with one end tightly attached to the insulating frame. The metal columns are fixed on the insulating frame and are all located at the center of the hexagonal columnar metal plate. The insulating frame is a hollow structure.

6. A disinfection method based on a plasma-based personnel disinfection channel as described in any one of claims 1-5, characterized in that, Includes the following steps: (1) Determine whether a person is healthy based on the measured body temperature of the visitor. When the person's body temperature is lower than the preset temperature of 37°C, open the entrance to the passage for the visitor to enter the passage; when the person's body temperature is higher than the preset temperature, do not open the entrance to the passage and trigger the siren alarm device to remind the staff to lead the visitor to isolation and observation. (2) When the visitors have normal body temperature and enter the air dust removal room, the air is purified by the wave-shaped plasma plate-plate device, which blows away the dust and aerosols attached to the visitors' clothes, achieving a preliminary dust removal effect. (3) After passing through the air dust removal chamber, visitors enter the negative ion charging chamber, and the negative ion generating device charges the surface of the visitors' clothing with negative ions. (4) After passing through the negative ion charging chamber, visitors enter the plasma atomization disinfection chamber. The location of the visitor's face is identified, and the ultrasonic atomization device below the visitor's neck atomizes and discharges pure water. After passing through the plasma discharge device, the droplets are loaded with active substances and positive ions. These droplets will efficiently adhere to the surface of the visitor's clothing through the electrostatic attraction of positive and negative ions. The high-energy active substances in them will sterilize and disinfect the visitor. The liquid generated by the accumulation of droplets will be discharged from the liquid suction device at the bottom of the disinfection chamber.

Images