Closed Area Automatic Disinfection, Absorption and Evaluation System and Method

Abstract

The present invention discloses an automatic disinfection, absorption and evaluation system and method for a closed area. The system includes a control unit, a disinfectant aerosol unit, an atomized neutralizer unit and an environmental monitoring unit; the control unit is configured to be able to control the environmental monitoring unit, the disinfectant aerosol unit and the atomized neutralizer unit; the environmental monitoring unit includes a disinfectant air concentration monitoring module and a disinfection effect monitoring module; the disinfection effect monitoring module is used to evaluate the terminal disinfection effect. The system of the present invention can realize automatic disinfection, absorption and disinfection effect evaluation by using corresponding types of disinfectants for different pathogen types.

Description

Technical Field

[0001] The present invention relates to a disinfection system and a disinfection method, and more particularly to an automatic disinfection, absorption and evaluation system and method for a closed area. Background Art

[0002] During the epidemic, a large number of scientific research institutions and medical institutions have urgently carried out research and treatment. The laboratories, operating rooms, treatment rooms, isolation wards, etc. used during this period are high-risk closed areas.

[0003] Currently, for the closed areas contaminated by the above-mentioned highly pathogenic pathogens, manual disinfection is usually adopted. Manual disinfection increases the risk of infection of the staff, increases the consumption of protective supplies, and causes physical damage to the staff. In addition, there is a lack of real-time monitoring of the actual situation in the isolation area. The isolation space is located in buildings such as stations, airports, and hospitals, and the disinfectant cannot be naturally discharged and degraded. Therefore, a disinfection, self-absorption, and automatic sampling system for the disinfection effect of a closed area is designed.

[0004] CN112727158A discloses a multi-disinfection type high-risk closed area disinfection system hospital applicable to highly infectious epidemic areas. First, by designing a single-cycle air exchange mechanism inside the mountain-shaped main cabin, the air exchange inside the mountain-shaped main cabin is realized, and at the same time, the transmission of germs in the ward area along the flowing air current to the medical staff area and the aisle area is reduced; secondly, the design of the high-risk closed area disinfection system with a mountain-shaped structure can realize the reasonable layout of the medical staff area, the aisle area and the ward area; finally, the mutual cooperation of atomization disinfection and ultraviolet disinfection improves the disinfection range and intensity. This hospital requires a main cabin with a special structure design, has great limitations in use, does not adopt corresponding disinfectants for different pathogen types, and has no measures for removing the residual disinfectant solution.

[0005] CN113144251A discloses an ozone disinfection device applicable to the disinfection of novel coronavirus in a closed space, which is only applicable to the disinfection inside a vehicle and has certain limitations.

[0006] In addition, CN212940695U discloses a high-risk closed area disinfection system for the disinfection of garbage transfer vehicles entering the factory, including a disinfection cabin. A disinfectant solution recovery tank is arranged below the disinfection cabin. Two traveling platforms are fixedly arranged in parallel along the length direction of the disinfection cabin on the inner bottom surface of the disinfection cabin. An ultraviolet sterilization area, a disinfectant solution spraying area, and a disinfectant solution collection area are sequentially arranged inside the disinfection cabin from the entrance end to the exit end. This disinfection system is applicable to the disinfection treatment of garbage transfer vehicles entering a garbage incineration plant. Summary of the Invention

[0007] In view of this, an object of the present invention is to provide an automatic disinfection, absorption and evaluation system for a closed area, which can realize automatic disinfection, absorption and evaluation of the disinfection effect by using corresponding types of disinfectants for different pathogen types. Another object of the present invention is a method for disinfection, absorption and evaluation using the above-mentioned automatic disinfection, absorption and evaluation system for a closed area. The object of the present invention is achieved by the following technical solutions.

[0008] On the one hand, the present invention provides an automatic disinfection, absorption and evaluation system for a closed area, including a control unit, a disinfectant aerosol unit, an atomized neutralizer unit and an environmental monitoring unit;

[0009] The control unit is set to be able to control the environmental monitoring unit, the disinfectant aerosol unit and the atomized neutralizer unit;

[0010] The disinfectant aerosol unit is set to be able to spray corresponding types of disinfectant aerosol into the closed area so that the disinfectant concentration N in the closed area is continuously maintained at a preset concentration value N max for disinfection operations; the disinfection operations include on-demand disinfection and terminal disinfection;

[0011] The atomized neutralizer unit is set to be able to spray corresponding types of atomized neutralizer into the closed area after the disinfection operation to neutralize the residual disinfectant in the air;

[0012] The environmental monitoring unit includes a disinfectant air concentration monitoring module and a disinfection effect monitoring module;

[0013] The disinfectant air concentration monitoring module is set to monitor whether the disinfectant concentration N in the closed area is maintained at the preset concentration value N max , and monitor the residual disinfectant concentration N t after the disinfection operation is completed, and transmit the monitoring results to the control unit;

[0014] The disinfection effect monitoring module is used to evaluate the terminal disinfection effect, and it includes:

[0015] Petri dishes or tablets containing indicator microorganisms,

[0016] an automatic sampling device, and

[0017] a disinfection effect analysis device;

[0018] The automatic sampling device is configured to automatically place the petri dish or bacterial tablet containing the indicator microorganism in the enclosed area before spraying the disinfectant aerosol of the corresponding type, and automatically retrieve the petri dish or bacterial tablet containing the indicator microorganism and transfer it into the disinfection effect analysis device after the disinfectant aerosol unit is turned off and before the atomized neutralizer unit sprays the atomized neutralizer of the corresponding type; the disinfection effect analysis device is used for culturing the indicator microorganism and analyzing the terminal disinfection effect.

[0019] According to the system of the present invention, preferably, the disinfectant aerosol unit includes a disinfectant storage tank, a disinfectant metering pump, a disinfectant delivery pipe, a disinfectant pipeline, a disinfectant atomizer, and a disinfectant distributor;

[0020] The disinfectant storage tank is used for storing the disinfectant solution;

[0021] The disinfectant metering pump is connected to the disinfectant storage tank and the disinfectant pipeline respectively through the disinfectant delivery pipe, and is used for delivering the disinfectant solution to the disinfectant pipeline;

[0022] At least a part of the disinfectant pipeline is arranged in the enclosed area;

[0023] The disinfectant atomizer is arranged on the disinfectant pipeline and is used for forming the disinfectant aerosol from the disinfectant solution;

[0024] The disinfectant distributor is connected to the disinfectant atomizer and is used for spraying the disinfectant aerosol into the enclosed area so that it diffuses to every corner and gap of the enclosed area.

[0025] According to the system of the present invention, preferably, the disinfectant aerosol unit further includes a solenoid valve, and the solenoid valve is used for controlling the pipeline switch and adjusting the pressure of the disinfectant pipeline.

[0026] According to the system of the present invention, preferably, the disinfectant aerosol unit further includes a disinfectant liquid level height sensor and a first alarm;

[0027] The disinfectant liquid level height sensor is arranged in the disinfectant storage tank and is used for monitoring the height h of the disinfectant liquid level in the disinfectant storage tank;

[0028] The disinfectant liquid level height sensor is connected to the first alarm;

[0029] The first alarm is configured to send an alarm signal when the disinfectant liquid level height h is less than the preset height h min at this time.

[0030] According to the system of the present invention, preferably, the atomized neutralizer unit includes a neutralizer storage tank, a neutralizer metering pump, a neutralizer delivery pipe, a neutralizer pipeline, a neutralizer atomizer, and a neutralizer distributor;

[0031] The neutralizer storage tank is used to store the neutralizer solution;

[0032] The neutralizer metering pump is connected to the neutralizer storage tank and the neutralizer pipeline respectively through the neutralizer delivery pipe, and is used to deliver the neutralizer solution to the neutralizer pipeline;

[0033] At least a part of the neutralizer pipeline is arranged in the closed area;

[0034] The neutralizer atomizer is arranged on the neutralizer pipeline and is used to form an atomized neutralizer from the neutralizer solution;

[0035] The neutralizer distributor is connected to the neutralizer atomizer and is used to spray the atomized neutralizer into the closed area so that it diffuses to every corner and gap of the closed area.

[0036] According to the system of the present invention, preferably, the atomized neutralizer unit further includes a neutralizer liquid level height sensor and a second alarm;

[0037] The neutralizer liquid level height sensor is arranged in the neutralizer storage tank and is used to monitor the neutralizer liquid level height h' in the neutralizer storage tank;

[0038] The neutralizer liquid level height sensor is connected to the second alarm;

[0039] The second alarm is set to emit an alarm signal when the neutralizer liquid level height h' is less than the preset height h min '.

[0040] According to the system of the present invention, preferably, it further includes an access control unit and a third alarm;

[0041] The access control unit is arranged near the closed area, and the access control unit is set to determine whether it can be opened according to the instruction of the control unit. When the disinfection operation is carried out in the closed area, the control unit sends an instruction of unable to open to the access control unit;

[0042] The third alarm is set to emit an alarm signal when the access control unit fails to work properly.

[0043] On the other hand, the present invention also provides a method for terminal disinfection, absorption, and evaluation using the above-mentioned closed area automatic disinfection, absorption, and evaluation system, including the following steps:

[0044] 1) Before spraying the corresponding type of disinfectant aerosol, the automatic sampling device automatically places the petri dish or bacterial tablet containing the indicator microorganism in the enclosed area;

[0045] 2) The disinfectant aerosol unit sprays the corresponding type of disinfectant aerosol into the enclosed area so that the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max for disinfection operation;

[0046] 3) The disinfectant air concentration monitoring module monitors whether the disinfectant concentration N in the enclosed area is maintained at the preset concentration value N max and transmits the monitoring result to the control unit; if N < N max then repeat step 2);

[0047] 4) Continuously disinfect for a predetermined time t to complete the disinfection operation, and turn off the disinfectant aerosol unit; the automatic sampling device automatically retrieves the petri dish or bacterial tablet containing the indicator microorganism and transfers it into the disinfection effect analysis device, and the disinfection effect analysis device cultivates the indicator microorganism to analyze the terminal disinfection effect;

[0048] 5) The disinfectant air concentration monitoring module monitors the residual disinfectant concentration N in the enclosed area t and transmits the monitoring result to the control unit;

[0049] 6) The atomized neutralizer unit sprays the corresponding type of atomized neutralizer into the enclosed area to neutralize the residual disinfectant in the air;

[0050] 7) If the analysis result of the terminal disinfection effect is qualified, complete the disinfection, absorption and evaluation work; otherwise, repeat steps 1) to 6).

[0051] On the other hand, the present invention also provides a method for on-demand disinfection and absorption using the above-mentioned enclosed area automatic disinfection, absorption and evaluation system, including the following steps:

[0052] 1’) The disinfectant aerosol unit sprays the corresponding type of disinfectant aerosol into the enclosed area so that the disinfectant concentration N in the enclosed area is maintained at the preset concentration value N max for disinfection operation;

[0053] 2’) The disinfectant air concentration monitoring module monitors whether the disinfectant concentration N in the enclosed area is maintained at the preset concentration value N max and transmits the monitoring result to the control unit; if N < N max then repeat step 1’);

[0054] 3’) Continuously disinfect for a preset time t to complete the disinfection operation, and turn off the disinfectant aerosol unit;

[0055] 4’) The disinfectant air concentration monitoring module monitors the residual concentration N of the disinfectant in the enclosed area t and transmits the monitoring result to the control unit;

[0056] 5’) The atomized neutralizer unit sprays the corresponding type of atomized neutralizer into the enclosed area to neutralize the residual disinfectant in the air.

[0057] According to the method of the present invention, preferably, the particle size of the disinfectant aerosol is less than or equal to 5 μm.

[0058] The automatic disinfection, absorption and evaluation system for an enclosed area of the present invention can adopt corresponding types of disinfectants for different types of pathogens, and has a high disinfection efficiency. The system of the present invention can monitor the disinfectant concentration in real time, and realize automatic and intelligent disinfection, so as to realize remote control intelligent automatic disinfection and killing. Further, in the present invention, the residual disinfectant is removed by a neutralizer, so that there is almost no residue of the disinfectant, and the safety is relatively high, ensuring harmlessness to the human body. In addition, the system of the present invention can evaluate the effect of terminal disinfection. Description of the Drawings

[0059] Figure 1 It is a schematic diagram of an automatic disinfection, absorption and evaluation system for an enclosed area according to an embodiment of the present invention.

[0060] The description of the reference numerals is as follows:

[0061] 10 - Enclosed area, 100 - Environmental monitoring unit, 110 - Disinfectant air concentration monitoring module, 120 - Disinfection effect monitoring module, 200 - Disinfectant aerosol unit, 210 - Disinfectant storage tank, 300 - Control unit, 400 - Atomized neutralizer unit, 410 - Neutralizer storage tank, 500 - Access control unit. Detailed Embodiment

[0062] The present invention will be further described below with specific examples, but the protection scope of the present invention is not limited thereto.

[0063] <Automatic Disinfection, Absorption and Evaluation System for an Enclosed Area>

[0064] In the prior art, the disinfection system for a closed area generally uses a fixed type of disinfectant for disinfection, and cannot specifically disinfect against different types of pathogens. In addition, in the prior art, the residual disinfectant is not treated, which is not suitable for setting up a closed isolation area in a building with poor natural ventilation. Through research and experiments, it is found that by using the automatic disinfection, absorption and evaluation system for a closed area of the present invention, the pathogens in the closed area can be disinfected in real time, and the pathogens can be specifically eliminated, improving the disinfection efficiency, and there is no residue of the disinfectant, which is more environmentally friendly and safer.

[0065] The automatic disinfection, absorption and evaluation system for a closed area of the present invention includes an environmental monitoring unit, a disinfectant aerosol unit, an atomized neutralizer unit and a control unit. Optionally, the automatic disinfection, absorption and evaluation system for a closed area of the present invention further includes an access control unit and a third alarm. The following is a detailed description.

[0066] Control unit

[0067] In the present invention, the control unit can control the environmental monitoring unit and the disinfectant aerosol unit. In addition, the control unit can also control the atomized neutralizer unit. The control unit can be respectively connected to the environmental monitoring unit, the disinfectant aerosol unit and the atomized neutralizer unit. The control unit can also respectively transmit signals and control actions with the environmental monitoring unit, the disinfectant aerosol unit and the atomized neutralizer unit through other known means in the art.

[0068] The control unit can control the access control unit. The control unit can also control the alarm unit, such as the first alarm, the second alarm and the third alarm.

[0069] Disinfectant aerosol unit

[0070] The disinfectant aerosol unit of the present invention is used to start according to the start instruction issued by the control unit. After receiving the instruction issued by the control unit, the disinfectant aerosol unit sprays the corresponding type of disinfectant aerosol into the closed area, so that the disinfectant concentration N in the closed area is maintained at the preset concentration value N max . Preferably, the disinfection operation is continuously carried out at the preset concentration value N max . This can ensure that the pathogens are completely disinfected and improve the disinfection efficiency.

[0071] The disinfection operation includes on-demand disinfection and terminal disinfection. Terminal disinfection refers to the thorough disinfection carried out after the source of infection leaves the epidemic area. Generally, terminal disinfection is carried out after the tasks of isolation, transportation or treatment are completed. On-demand disinfection refers to the disinfection carried out in a timely manner on the environment and items that may be contaminated by the pathogens discharged by the source of infection when there is a source of infection. Generally, on-demand disinfection is carried out during the process of isolation, transportation or treatment.

[0072] In the present invention, terminal disinfection requires an evaluation of the disinfection effect. Opportunistic disinfection may not require an evaluation of the disinfection effect.

[0073] In certain embodiments, the disinfectant aerosol unit includes: a disinfectant storage tank, a disinfectant metering pump, a disinfectant delivery pipe, a disinfectant pipeline, a disinfectant atomizer, a disinfectant distributor, a solenoid valve, a disinfectant liquid level height sensor, and a first alarm. The disinfectant storage tank is used to store the disinfectant solution. The type of the disinfectant solution is not particularly limited. The disinfectant metering pump is connected to the disinfectant storage tank and the disinfectant pipeline respectively through the disinfectant delivery pipe, and delivers the disinfectant solution to the disinfectant pipeline. At least a part of the disinfectant pipeline is disposed in a closed area. The disinfectant atomizer is disposed on the disinfectant pipeline and is used to form a disinfectant aerosol from the disinfectant solution. Preferably, the particle size of the disinfectant aerosol is less than or equal to 5 μm. The formed disinfectant aerosol diffuses in the room and kills pathogens in all directions.

[0074] The disinfectant distributor is connected to the disinfectant atomizer and is used to effectively disperse the formed disinfectant aerosol to each corner and gap of the closed area, thereby facilitating the elimination of pathogens. The solenoid valve is used to control the pipeline switch and adjust the pressure of the disinfectant pipeline. The disinfectant liquid level height sensor is disposed in the disinfectant storage tank and is used to monitor the height h of the disinfectant liquid level in the disinfectant storage tank in real time. The disinfectant liquid level height sensor is connected to the first alarm. When the disinfectant liquid level height h is lower than the preset height h min then the first alarm emits an alarm signal. This can ensure that the disinfectant solution is always in an available state. The preset height h min can be set as needed, and no specific value is particularly limited herein.

[0075] According to the work requirements, select the corresponding type of disinfectant according to the type of pathogen, and calculate the dosage of the disinfectant solution (the control unit automatically calculates the dosage of the disinfectant solution) according to the space volume of the closed area and the concentration of the disinfectant solution by a conventional method, and send an instruction to the disinfectant aerosol unit. This is conducive to controlling the appropriate dosage of the disinfectant solution.

[0076] In the present invention, the types of pathogens include but are not limited to novel coronavirus, plague, anthrax, etc. When selecting the type of disinfectant, preferably select a disinfectant that is sensitive to the pathogen. For example, when the type of pathogen is novel coronavirus, the corresponding disinfectant used can be peracetic acid disinfectant or chlorine-containing disinfectant.

[0077] Environmental monitoring unit

[0078] The environmental monitoring unit of the present invention includes a disinfectant air concentration monitoring module and a disinfection effect monitoring module.

[0079] In the present invention, the disinfectant air concentration monitoring module of the present invention can monitor the disinfectant concentration N in a closed area and transmit the disinfectant concentration N to the control unit; the control unit can determine whether the disinfectant concentration is maintained at a preset concentration value N max . If it fails to be maintained, the control unit issues a continuous spraying instruction to the disinfectant aerosol unit.

[0080] The disinfectant concentration N is maintained at the preset concentration value N max , and continuous disinfection is carried out until a predetermined time t. According to different pathogen types and disinfection purposes (concurrent disinfection, terminal disinfection), the predetermined time t can be set to 30 min to 2 h, and the control unit issues a shutdown instruction to the disinfectant aerosol unit to shut down the disinfectant aerosol unit. The present invention uses aerosol disinfectants for different types of pathogens, which can improve the disinfection efficiency.

[0081] In the present invention, the preset concentration value N of the disinfectant max can be set according to actual needs and will not be elaborated here.

[0082] In the present invention, the disinfectant air concentration monitoring module of the present invention can also monitor the residual disinfectant concentration N after the disinfection operation t , and transmit the monitoring result to the control unit.

[0083] In the present invention, the disinfection effect monitoring module is used to evaluate the terminal disinfection effect, and it includes: a petri dish or a bacterial tablet containing indicator microorganisms, an automatic sampling device, and a disinfection effect analysis device. The automatic sampling device is arranged to automatically place the petri dish or the bacterial tablet containing indicator microorganisms in the closed area before spraying the corresponding type of disinfectant aerosol, and automatically retrieve the petri dish or the bacterial tablet containing indicator microorganisms and transfer it to the disinfection effect analysis device after the disinfectant aerosol unit is shut down and before the atomized neutralizer unit sprays the corresponding type of atomized neutralizer. The disinfection effect analysis device is used to culture the indicator microorganisms and analyze the terminal disinfection effect.

[0084] The disinfection effect monitoring module is used for automatic sampling, reducing the physical damage to staff and the consumption of protective equipment.

[0085] In the present invention, according to relevant standards, a petri dish or a bacterial tablet containing indicator microorganisms can be placed in the closed area. The indicator microorganisms are used according to the relevant standards in the prior art and will not be elaborated here.

[0086] Atomized neutralizer unit

[0087] Continuously disinfect for a preset time t, turn off the disinfectant aerosol unit, and start the atomized neutralizer unit of the present invention. The above actions can be completed by the control unit. In this way, automatic neutralization and degradation of the residual disinfectant and automatic control can be achieved.

[0088] After the disinfection operation is completed, the control unit starts the disinfectant air concentration monitoring module. The disinfectant air concentration monitoring module monitors the residual concentration N of the disinfectant after the disinfection operation t , and transmits the monitoring result to the control unit.

[0089] The atomized neutralizer unit is used to neutralize the residual disinfectant. By neutralization, it means that the residual disinfectant is removed or transformed into a non-toxic substance. In this way, it can be ensured that the disinfectant does not spill and discharge outside the enclosed area, leaving no residue and being safer.

[0090] In some embodiments, the atomized neutralizer unit and the disinfectant aerosol unit are completely independently arranged. The atomized neutralizer unit includes a neutralizer storage tank, a neutralizer metering pump, a neutralizer delivery pipe, a neutralizer pipeline, a neutralizer atomizer, a neutralizer distributor, a neutralizer liquid level height sensor, and a second alarm. The neutralizer storage tank is connected to the neutralizer metering pump. The neutralizer storage tank is used to store the neutralizer, and the neutralizer is used to neutralize the residual disinfectant in the enclosed area. The neutralizer metering pump is connected to the neutralizer storage tank and the neutralizer pipeline respectively through the neutralizer delivery pipe, and is used to deliver the neutralizer to the neutralizer pipeline. At least a part of the neutralizer pipeline is arranged in the enclosed area. The neutralizer atomizer is arranged on the neutralizer pipeline and is used to form the neutralizer into a dispersed state. The neutralizer distributor is connected to the neutralizer atomizer and is used to effectively disperse the aerosolized neutralizer to every corner and crevice of the enclosed area and neutralize the residual disinfectant.

[0091] The neutralizer liquid level height sensor is arranged in the neutralizer storage tank and is used to monitor the liquid level height h' of the neutralizer in the neutralizer storage tank in real time. The neutralizer liquid level height sensor is connected to the second alarm. When the liquid level height h' of the neutralizer is lower than the preset height h min ', the second alarm emits an alarm signal. The neutralizer storage tank is connected to the metering pump in the disinfectant aerosol unit, and forms an aerosol of the neutralizer through the atomizer and distributor as described above, and disperses it to every corner and crevice of the enclosed area to neutralize the residual disinfectant. Thus, a complete disinfection and neutralization work can be completed. The preset height h min ' can be set as needed, and there is no specific limit on the specific value here.

[0092] Access control unit

[0093] The access control unit of the present invention is arranged close to the enclosed area. The access control unit is set to determine whether it can be opened according to the instruction of the control unit. When disinfection operation is carried out in the enclosed area, the control unit sends an instruction that it cannot be opened to the access control unit. The third alarm is set to send an alarm signal when the access control unit fails to work properly.

[0094] <Automatic Disinfection, Absorption and Evaluation Method for Enclosed Area>

[0095] The automatic disinfection, absorption and evaluation method for the enclosed area of the present invention includes an on-demand disinfection method and a terminal disinfection method.

[0096] Terminal disinfection is carried out after the tasks of isolation, transportation or treatment are completed. Disinfection effect evaluation must be carried out for terminal disinfection. The methods for terminal disinfection, absorption and evaluation include the following steps:

[0097] 1) Before spraying the corresponding type of disinfectant aerosol, the automatic sampling device automatically places a petri dish or a bacterial tablet containing indicator microorganisms in the enclosed area;

[0098] 2) The disinfectant aerosol unit sprays the corresponding type of disinfectant aerosol into the enclosed area so that the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max , and disinfection operation is carried out;

[0099] 3) The disinfectant air concentration monitoring module monitors whether the disinfectant concentration N in the enclosed area is maintained at the preset concentration value N max , and transmits the monitoring result to the control unit; if N < N max , step 2) is repeated;

[0100] 4) Disinfection operation is completed by continuously disinfecting for a predetermined time t, and the disinfectant aerosol unit is turned off; the automatic sampling device automatically retrieves the petri dish or the bacterial tablet containing indicator microorganisms and transfers it into the disinfection effect analysis device, and the disinfection effect analysis device cultures the indicator microorganisms to analyze the terminal disinfection effect;

[0101] 5) The disinfectant air concentration monitoring module monitors the residual disinfectant concentration N t in the enclosed area and transmits the monitoring result to the control unit;

[0102] 6) The atomized neutralizer unit sprays the corresponding type of atomized neutralizer into the enclosed area to neutralize the residual disinfectant in the air;

[0103] 7) If the analysis result of the terminal disinfection effect is qualified, the disinfection, absorption and evaluation work is completed; otherwise, steps 1) to 6) are repeated.

[0104] During the process of isolation, transportation or treatment, carry out immediate disinfection and absorption. The immediate disinfection method may not require evaluation of the disinfection effect. The methods for immediate disinfection and absorption include the following steps:

[0105] 1’) The disinfectant aerosol unit sprays the corresponding type of disinfectant aerosol into the enclosed area so that the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max Perform disinfection operations;

[0106] 2’) The disinfectant air concentration monitoring module monitors whether the disinfectant concentration N in the enclosed area is maintained at the preset concentration value N max and transmits the monitoring result to the control unit; if N < N max , then repeat step 1’);

[0107] 3’) Continuously disinfect for a predetermined time t to complete the disinfection operation and turn off the disinfectant aerosol unit;

[0108] 4’) The disinfectant air concentration monitoring module monitors the residual disinfectant concentration N in the enclosed area t and transmits the monitoring result to the control unit;

[0109] 5’) The atomized neutralizer unit sprays the corresponding type of atomized neutralizer into the enclosed area to neutralize the residual disinfectant in the air.

[0110] The control unit selects the corresponding type of disinfectant according to the type of pathogen. If the pathogen is the novel coronavirus, chlorine-containing disinfectants or peracetic acid disinfectants can be used. The control unit can calculate the dosage of the disinfectant solution based on the spatial volume of the enclosed area and the concentration of the disinfectant solution in the disinfectant storage tank by conventional methods and send instructions to the disinfectant aerosol unit.

[0111] The particle size of the disinfectant aerosol is less than or equal to 5 μm, preferably less than or equal to 4.5 μm. In the present invention, the preset concentration value N of the disinfectant aerosol max can be set according to actual needs and will not be elaborated here.

[0112] The type of neutralizer is selected according to the type of residual disinfectant. For example, sodium bicarbonate solution can be used as the neutralizer for chlorine-containing disinfectants. The dosage of the neutralizer is calculated based on the amount of residual disinfectant by conventional methods and will not be elaborated here.

[0113] Example 1

[0114] Figure 1 is a schematic diagram of an automatic disinfection, absorption and evaluation system for an enclosed area of the present invention. The enclosed area 10 includes laboratories, operating rooms, treatment rooms, isolation wards, etc. required for research and treatment of pathogens during epidemic or non-epidemic periods.

[0115] As Figure 1 shown, the automatic disinfection, absorption and evaluation system for the enclosed area includes an environmental monitoring unit 100, a disinfectant aerosol unit 200, a control unit 300 and an atomized neutralizer unit 400. The control unit 300 can control the environmental monitoring unit 100, the disinfectant aerosol unit 200 and the atomized neutralizer unit 400.

[0116] The disinfectant aerosol unit 200 sprays the corresponding type of disinfectant aerosol into the enclosed area 10 so that the disinfectant concentration N in the enclosed area 10 is continuously maintained at the preset concentration value N max for disinfection operation.

[0117] Timely disinfection is carried out during isolation, transportation or treatment. Terminal disinfection is carried out after the tasks of isolation, transportation or treatment are completed. When timely disinfection or terminal disinfection is required, the control unit 300 issues a start disinfection instruction to the disinfectant aerosol unit 200.

[0118] Specifically, the control unit 300 selects the corresponding type of disinfectant according to the pathogen type. For example, when the pathogen type is novel coronavirus, the corresponding disinfectants used are peracetic acid disinfectant solution or chlorine-containing disinfectant. The control unit 300 issues a start disinfection instruction to the disinfectant aerosol unit 200. The disinfectant aerosol unit 200 sprays the corresponding type of disinfectant into the enclosed area 10 according to the instruction issued by the control unit 300.

[0119] The disinfectant aerosol unit 200 includes a disinfectant storage tank 210, a disinfectant metering pump, a disinfectant delivery pipe, a disinfectant pipeline, a disinfectant atomizer, a disinfectant distributor, a solenoid valve, a disinfectant liquid level height sensor and a first alarm (not shown). The disinfectant storage tank 210 stores the disinfectant solution. The disinfectant metering pump is connected to the disinfectant storage tank 210 and the disinfectant pipeline respectively through the disinfectant delivery pipe to deliver the disinfectant solution to the disinfectant pipeline. At least a part of the disinfectant pipeline is arranged in the enclosed area 10. The disinfectant atomizer is arranged on the disinfectant pipeline to form disinfectant aerosol from the disinfectant solution. The particle size of the disinfectant aerosol is less than or equal to 5μm. The disinfectant distributor is connected to the disinfectant atomizer to effectively disperse the formed disinfectant aerosol to every corner and gap of the enclosed area 10. The solenoid valve controls the pipeline switch to adjust the pressure of the disinfectant pipeline. The disinfectant liquid level height sensor is arranged in the disinfectant storage tank 210 to real-time monitor the liquid level height h of the disinfectant in the disinfectant storage tank 210. The disinfectant liquid level height sensor is connected to the first alarm. When the disinfectant liquid level height h is lower than the preset height h min then the first alarm emits an alarm signal.

[0120] The environmental monitoring unit 100 includes a disinfectant air concentration monitoring module 110 and a disinfection effect monitoring module 120.

[0121] The disinfectant air concentration monitoring module 110 monitors whether the disinfectant concentration N in the enclosed area 10 is maintained at a preset concentration value N max , and monitors the residual disinfectant concentration N after the disinfection operation is completed t , and transmits the monitoring results to the control unit 300. The control unit 300 determines in real time whether the disinfectant concentration N reaches the preset concentration value N max . At the preset concentration value N max Continue disinfection for a predetermined time t (e.g., 2 hours) to complete one disinfection operation.

[0122] The disinfection effect monitoring module 120 is used to evaluate the terminal disinfection effect. The disinfection effect monitoring module 120 includes: a petri dish or a tablet containing indicator microorganisms, an automatic sampling device, and a disinfection effect analysis device.

[0123] Before spraying the corresponding type of disinfectant aerosol, the automatic sampling device automatically places the petri dish or tablet containing indicator microorganisms in the enclosed area 10. After the disinfectant aerosol unit 200 is closed and before the atomized neutralizer unit 400 sprays the corresponding type of atomized neutralizer, the automatic sampling device automatically retrieves the petri dish or tablet containing indicator microorganisms and transfers it into the disinfection effect analysis device. The disinfection effect analysis device is used to culture the indicator microorganisms and analyze the terminal disinfection effect.

[0124] After the disinfection operation is completed, the atomized neutralizer unit 400 sprays the corresponding type of atomized neutralizer into the enclosed area 10 to neutralize the residual disinfectant in the air. Specifically, during on-demand disinfection, the atomized neutralizer unit 400 starts after the disinfection operation is completed. During terminal disinfection, the atomized neutralizer unit 400 starts the neutralization work after the disinfection operation is completed and after the petri dish or tablet containing indicator microorganisms is automatically retrieved.

[0125] The atomized neutralizer unit 400 includes a neutralizer storage tank 410, a neutralizer metering pump, a neutralizer delivery pipe, a neutralizer pipeline, a neutralizer atomizer, a neutralizer distributor, a neutralizer liquid level height sensor, and a second alarm. In this embodiment, the atomized neutralizer unit 400 is independently arranged from the disinfectant aerosol unit 200.

[0126] The neutralizer storage tank 410 is connected to the neutralizer metering pump. The neutralizer storage tank 410 stores the neutralizer, which is used to neutralize the residual disinfectant in the closed area 10. The neutralizer metering pump is connected to the neutralizer storage tank 410 and the neutralizer pipeline respectively through the neutralizer delivery pipe, and is used to transport the neutralizer to the neutralizer pipeline. At least a part of the neutralizer pipeline is arranged in the closed area 10. The neutralizer atomizer is arranged on the neutralizer pipeline and is used to form an atomized neutralizer from the neutralizer. The neutralizer distributor is connected to the neutralizer atomizer and is used to effectively disperse the atomized neutralizer to each corner and gap of the closed area 10, so as to neutralize the residual disinfectant.

[0127] The neutralizer liquid level sensor is arranged in the neutralizer storage tank 410 and is used to monitor the liquid level height h' of the neutralizer in the neutralizer storage tank 410 in real time. The neutralizer liquid level sensor is connected to the second alarm. When the liquid level height h' of the neutralizer is lower than the preset height h min ', the second alarm emits an alarm signal. In this embodiment, the preset height h min ' is 20 cm.

[0128] The method for performing random disinfection and terminal disinfection using the above system is introduced below.

[0129] During the process of isolation, transportation or treatment, random disinfection is carried out, including the following steps:

[0130] 1') The disinfectant aerosol unit 200 sprays the corresponding type of disinfectant aerosol into the closed area 10 so that the disinfectant concentration N in the closed area 10 is maintained at the preset concentration value N max for disinfection operations; wherein, the particle size of the disinfectant aerosol is less than or equal to 5 μm;

[0131] 2') The disinfectant air concentration monitoring module 110 monitors whether the disinfectant concentration N in the closed area 10 is maintained at the preset concentration value N max , and transmits the monitoring result to the control unit 300; if N < N max , step 1') is repeatedly executed;

[0132] 3') Continuously disinfect for a predetermined time t to complete the disinfection operation, and turn off the disinfectant aerosol unit 200;

[0133] 4') The disinfectant air concentration monitoring module 110 monitors the residual disinfectant concentration N in the closed area 10 t , and transmits the monitoring result to the control unit 300;

[0134] 5') The atomized neutralizer unit 400 sprays the corresponding type of atomized neutralizer into the closed area 10 to neutralize the residual disinfectant in the air.

[0135] In this way, a complete on-demand disinfection operation is completed.

[0136] After the tasks of isolation, transfer, or treatment are completed, terminal disinfection is carried out, including the following steps:

[0137] 1) Before spraying the corresponding type of disinfectant aerosol, the automatic sampling device automatically places a petri dish or a bacterial tablet containing indicator microorganisms in the enclosed area 10;

[0138] 2) The disinfectant aerosol unit 200 sprays the corresponding type of disinfectant aerosol into the enclosed area 10 so that the disinfectant concentration N in the enclosed area 10 is maintained at a preset concentration value N max for disinfection operation; wherein, the particle size of the disinfectant aerosol is less than or equal to 5 μm;

[0139] 3) The disinfectant air concentration monitoring module 110 monitors whether the disinfectant concentration N in the enclosed area 10 is maintained at the preset concentration value N max , and transmits the monitoring result to the control unit 300; if N < N max , then step 2) is repeated;

[0140] 4) Continuously disinfect for a predetermined time t to complete the disinfection operation, and turn off the disinfectant aerosol unit 200; the automatic sampling device automatically retrieves the petri dish or the bacterial tablet containing indicator microorganisms and transfers it into the disinfection effect analysis device, and the disinfection effect analysis device cultures the indicator microorganisms to analyze the terminal disinfection effect;

[0141] 5) The disinfectant air concentration monitoring module 110 monitors the residual disinfectant concentration N in the enclosed area 10 t , and transmits the monitoring result to the control unit 300;

[0142] 6) The atomized neutralizer unit 400 sprays the corresponding type of atomized neutralizer into the enclosed area 10 to neutralize the residual disinfectant in the air;

[0143] 7) If the analysis result of the terminal disinfection effect is qualified, the disinfection, absorption, and evaluation work is completed (i.e., a complete terminal disinfection operation is completed); otherwise, steps 1) to 6) are repeated.

[0144] Example 2

[0145] Except for the following structures and settings, the rest are the same as in Embodiment 1:

[0146] As Figure 1As shown, the closed area disinfection system further includes an access control unit 500 and a third alarm. The access control unit 500 is disposed near the closed area 10 and determines whether to open according to the instruction of the control unit 300. When the disinfection operation is carried out in the closed area 10, the control unit 300 sends an instruction that it cannot be opened to the access control unit 500. When the access control unit 500 fails to work properly, the third alarm emits an alarm signal.

[0147] The present invention is not limited to the above embodiments. Without departing from the essence of the present invention, any variations, improvements, and substitutions that can be conceived by those skilled in the art fall within the scope of the present invention.

Claims

1. A method for automatically disinfecting, absorbing, and evaluating a closed area using a closed - area automatic disinfection, absorption, and evaluation system, characterized in that: The closed - area automatic disinfection, absorption, and evaluation system includes a control unit, a disinfectant aerosol unit, an atomized neutralizer unit, and an environmental monitoring unit; The control unit is configured to control the environmental monitoring unit, the disinfectant aerosol unit, and the atomized neutralizer unit; The disinfectant aerosol unit is configured to be able to spray a corresponding type of disinfectant aerosol into the enclosed area, so that the disinfectant concentration N in the enclosed area is continuously maintained at a preset concentration value N max for disinfection operations; the disinfection operations include on-demand disinfection and terminal disinfection; The disinfectant aerosol unit includes a disinfectant storage tank, a disinfectant metering pump, a disinfectant delivery pipe, a disinfectant pipeline, a disinfectant atomizer, a disinfectant distributor, a solenoid valve, a disinfectant liquid - level height sensor, and a first alarm; The disinfectant storage tank is used to store the disinfectant solution; The disinfectant metering pump is connected to the disinfectant storage tank and the disinfectant pipeline respectively through the disinfectant delivery pipe, and is used to transport the disinfectant solution to the disinfectant pipeline; At least a part of the disinfectant pipeline is arranged in the closed area; the solenoid valve is used to control the pipeline switch and adjust the pressure of the disinfectant pipeline; The disinfectant atomizer is arranged on the disinfectant pipeline and is used to form a disinfectant aerosol from the disinfectant solution; The disinfectant distributor is connected to the disinfectant atomizer and is used to spray the disinfectant aerosol into the closed area so that it diffuses to every corner and gap of the closed area; The disinfectant liquid - level height sensor is arranged in the disinfectant storage tank and is used to monitor the height h of the disinfectant liquid level in the disinfectant storage tank in real time; The disinfectant liquid level sensor is connected to the first alarm; the first alarm is set to emit an alarm signal when the disinfectant liquid level h is less than the preset height h min at this time; The atomized neutralizer unit is configured to spray a corresponding type of atomized neutralizer into the closed area after the disinfection operation to neutralize the residual disinfectant in the air; The atomized neutralizer unit includes a neutralizer storage tank, a neutralizer metering pump, a neutralizer delivery pipe, a neutralizer pipeline, a neutralizer atomizer, a neutralizer distributor, a neutralizer liquid - level height sensor, and a second alarm; The neutralizer storage tank is used to store the neutralizer solution; The neutralizer metering pump is connected to the neutralizer storage tank and the neutralizer pipeline respectively through the neutralizer delivery pipe, and is used to transport the neutralizer solution to the neutralizer pipeline; At least a part of the neutralizer pipeline is arranged in the closed area; The neutralizer atomizer is arranged on the neutralizer pipeline and is used to form an atomized neutralizer from the neutralizer solution; The neutralizer distributor is connected to the neutralizer atomizer and is used to spray the atomized neutralizer into the closed area so that it diffuses to every corner and gap of the closed area; The neutralizer liquid - level height sensor is arranged in the neutralizer storage tank and is used to monitor the height h' of the neutralizer liquid level in the neutralizer storage tank in real time; The neutralizer liquid level sensor is connected to the second alarm; the second alarm is configured to emit an alarm signal when the neutralizer liquid level h' is less than the preset height h min '; the preset height h min ' is 20 cm; The environmental monitoring unit includes a disinfectant air - concentration monitoring module and a disinfection - effect monitoring module; The disinfectant air concentration monitoring module is set to monitor whether the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max , and monitor the residual disinfectant concentration N after the disinfection operation is completed t , and transmit the monitoring results to the control unit; The disinfection - effect monitoring module is used to evaluate the terminal disinfection effect, and it includes: Petri dishes or tablets containing indicator microorganisms, An automatic sampling device, and A disinfection - effect analysis device; The automatic sampling device is configured to automatically place the petri dish or bacterial tablet containing the indicator microorganism in the closed area before spraying the disinfectant aerosol of the corresponding type, and automatically retrieve the petri dish or bacterial tablet containing the indicator microorganism and transfer it into the disinfection effect analysis device after the disinfectant aerosol unit is turned off and before the atomized neutralizer unit sprays the atomized neutralizer of the corresponding type; the disinfection effect analysis device is used to culture the indicator microorganism and analyze the terminal disinfection effect. The closed area automatic disinfection, absorption and evaluation system further includes an access control unit and a third alarm; the access control unit is arranged close to the closed area, and the access control unit is configured to determine whether it can be opened according to the instruction of the control unit. When the closed area is performing disinfection operations, the control unit sends an instruction that it cannot be opened to the access control unit; the third alarm is configured to send an alarm signal when the access control unit fails to work properly. The method is as follows: (1) Perform on-site disinfection and absorption during the process of isolation, transportation or treatment, including the following steps: 1’) The disinfectant aerosol unit sprays the corresponding type of disinfectant aerosol into the enclosed area so that the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max for disinfection operations; the disinfectant aerosol is an aerosol formed by a chlorine-containing disinfectant with a particle size less than or equal to 4.5 μm; 2’) The disinfectant air concentration monitoring module monitors whether the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max , and transmits the monitoring result to the control unit; if N < N max , then repeat step 1’); 3’) Continuously disinfect for a predetermined time t to complete the disinfection operation, and turn off the disinfectant aerosol unit. 4') The disinfectant air concentration monitoring module monitors the residual concentration N of the disinfectant in the enclosed area t , and transmits the monitoring result to the control unit; 5’) The atomized neutralizer unit sprays the atomized neutralizer of the corresponding type into the closed area to neutralize the residual disinfectant in the air; the neutralizer is a sodium bicarbonate solution. (2) Perform terminal disinfection, absorption and evaluation after the tasks of isolation, transportation or treatment are completed, including the following steps: 1) Before spraying the disinfectant aerosol of the corresponding type, the automatic sampling device automatically places the petri dish or bacterial tablet containing the indicator microorganism in the closed area. 2) The disinfectant aerosol unit sprays the corresponding type of disinfectant aerosol into the enclosed area so that the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max , and disinfection operations are carried out; the disinfectant aerosol is an aerosol formed by a chlorine-containing disinfectant with a particle size less than or equal to 4.5 μm; 3) The disinfectant air concentration monitoring module monitors whether the disinfectant concentration N in the enclosed area is maintained at a preset concentration value N max , and transmits the monitoring result to the control unit; if N < N max , then repeat step 2); 4) Continuously disinfect for a predetermined time t to complete the disinfection operation, and turn off the disinfectant aerosol unit; the automatic sampling device automatically retrieves the petri dish or bacterial tablet containing the indicator microorganism and transfers it into the disinfection effect analysis device, and the disinfection effect analysis device cultures the indicator microorganism and analyzes the terminal disinfection effect. 5) The disinfectant air concentration monitoring module monitors the residual concentration N of the disinfectant in the enclosed area t , and transmits the monitoring result to the control unit; 6) The atomized neutralizer unit sprays the atomized neutralizer of the corresponding type into the closed area to neutralize the residual disinfectant in the air; the neutralizer is a sodium bicarbonate solution. 7) If the analysis result of the terminal disinfection effect is qualified, the disinfection, absorption and evaluation work is completed; otherwise, repeat steps 1) to 6).

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