WO2022227235A1 - 一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法 - Google Patents

一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法 Download PDF

Info

Publication number
WO2022227235A1
WO2022227235A1 PCT/CN2021/099593 CN2021099593W WO2022227235A1 WO 2022227235 A1 WO2022227235 A1 WO 2022227235A1 CN 2021099593 W CN2021099593 W CN 2021099593W WO 2022227235 A1 WO2022227235 A1 WO 2022227235A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
plasma
sterilization
air
temperature resistant
Prior art date
Application number
PCT/CN2021/099593
Other languages
English (en)
French (fr)
Inventor
孙运金
乔富强
赵春雷
王辉
王昕仪
高凯建
Original Assignee
北京农学院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京农学院 filed Critical 北京农学院
Publication of WO2022227235A1 publication Critical patent/WO2022227235A1/zh

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/14—Plasma, i.e. ionised gases
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22—Ionisation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy

Definitions

  • the invention belongs to the technical field of sterilization and disinfection of air and environment, and particularly relates to a plasma sterilization device, a preparation method of sterilization gas and a sterilization method.
  • sterilization and disinfection methods such as ultraviolet sterilization and sterilization of alcohol hydrogen peroxide
  • problems such as sterilization loopholes and incompleteness.
  • the commonly used sterilization methods are physical sterilization methods, such as ultra-high pressure sterilization, high-voltage electric field sterilization, and irradiation sterilization.
  • ultra-high pressure sterilization high-voltage electric field sterilization
  • irradiation sterilization Although these sterilization methods can kill bacteria and viruses existing on the surface and space of objects to a certain extent, they will destroy the organizational form of the product.
  • the sterilization efficiency is low and the energy consumption is high, which causes certain safety hazards to the human body and the environment.
  • Plasma gas is a new type of residue-free green sterilization technology, and the sterilization effect varies greatly depending on the plasma discharge generation mode.
  • the main component of dielectric barrier discharge sterilization is ozone ions, and the sterilization space is small, limited to the discharge area, and the sterilization gas is harmful to the human body, which is not environmentally friendly.
  • the characteristics of sliding arc discharge in industrial applications are high temperature and low energy utilization rate; generally, the high temperature direct blowing mode of sliding arc is used to achieve the purpose of sterilization, and the electrode structure of sliding arc discharge is complex, requiring high temperature resistance and water cooling system, and the manufacturing cost is relatively high. high.
  • Industrial gliding arc discharge plasma is mainly used for high temperature combustion, the active material in the product has a short life, the air has only undergone one ionization, the sterilization effect and efficiency are low, the action area is limited to the discharge area, and it is mostly used for domestic water purification and sterilization.
  • the present invention provides a plasma sterilization device, a preparation method and a sterilization method.
  • the present invention has a simple structure, and the gas in the space circulates and flows in the insulating high temperature resistant tube and is repeatedly ionized by sliding arc discharge, and the plasma gas is continuously ionized. , stimulate the generation of free radicals OH. with a strong bactericidal effect.
  • the invention can continuously generate plasma gas inside the sealed space and the concentration gradient is continuously increased, which ensures high sterilization activity and timeliness of the plasma gas, and has short-term stability. It is a green, environmentally friendly and residue-free sterilization. method.
  • the sterilization active substances of the plasma inside the sealed space have high timeliness and can maintain a sterilization time of 5-60 minutes; the plasma gas inside the sealed space can completely sterilize the internal air and the surfaces of objects it can contact, It can effectively reduce the safety risks caused by bacteria and viruses.
  • a plasma sterilization device comprising a sliding arc discharge reactor, an air circulation device and a sealed space;
  • the air circulation device includes a fan; the air inlet end and the air outlet end of the air circulation device are respectively communicated with the sealed space, and the air circulation device and the sealed space form a sealed communication through the air inlet end and the air outlet end set up;
  • the sliding arc discharge reactor includes a power supply and two electrodes arranged oppositely; the power supply is connected to the electrodes; the gas outlet is an insulating high temperature resistant pipe, or the gas outlet is connected with an insulating high temperature resistant pipe, and the electrodes are provided with in the insulated high temperature resistant pipe;
  • the plasma gas in the electrode area is ionized under the action of the airflow circulation device and blown out of the insulating channel to form the plasma sterilizing gas.
  • connection line of the discharge ends of the two electrodes is perpendicular to the center line of the insulated high temperature resistant tube.
  • the sliding arc discharge reactor of the invention generates sliding arc discharge plasma, excites and ionizes the gas to generate free radical ions, and performs multiple sliding arc ionization on the gas through the circulation between the gas circulation device and the sealed space. It has been verified that when the free radicals OH and hydrogen peroxide H 2 O 2 reach a certain content, the free radicals and hydrogen peroxide in the space will reach a stable state, the activity will not disappear in a short time, and the timeliness is high. , can maintain the sterilization time of 5-60 minutes. Through the operation of the generating device, a large amount of active plasma gas in a stable state is generated in the space, which provides a strong guarantee for the sterilization and disinfection in the subsequent area and outside the area.
  • the power source is a DC power source
  • the voltage is 10kV-40kV
  • the rated power is 1000W-1500W.
  • the discharge power of industrial sliding arc discharge plasma is relatively high, generally more than 10kW, so that the temperature of the center of the sliding arc can even reach 6000 °C. It needs to be equipped with a large airflow system and cooling device, which consumes high energy and cannot maintain the discharge state for a long time.
  • the present invention uses a DC power supply with a rated power of 1000W-1500W, reduces the discharge power of the sliding arc through the matching of airflow circulation, electrode shape and discharge distance, improves the discharge stability, and ensures that the discharge mode is much lower than the conventional sliding arc.
  • the arc discharge power can maintain this discharge state for a long time, and it has significantly better sterilization effect and space action range than other atmospheric discharge plasmas.
  • the insulating high temperature resistant tube is a ceramic tube or a quartz tube with an inner diameter of 10mm-100mm; the electrode position is greater than 1cm from both ends of the high temperature resistant tube.
  • Ceramic or quartz is a good insulating and high temperature resistant material.
  • the inner diameter is controlled at 10mm-100mm to meet the needs of various occasions.
  • the distance between the electrode position and the two ends of the high temperature resistant tube is greater than 1cm, which ensures that the heat can be fully diffused and discharge is safe.
  • the airflow of the fan is 0.5m/s-10m/s, and the arc length of the blowing sliding arc is 2cm-6cm.
  • the rate of plasma excitation can be controlled.
  • the higher the wind speed the faster the plasma excitation rate, but it will cause the discharge arc to be unstable and break. If the wind speed is too low, the ionization efficiency will be reduced and less active components will be produced.
  • the electrode shape is a column with a diameter of 1mm-3mm, and the distance between the two electrodes is 5mm-70mm.
  • the columnar shape with an electrode diameter of 1mm-3mm has a small wind resistance, and the distance between the two electrodes is 5mm-70mm to ensure the stability of the discharge.
  • the overall matching of electrode structure, airflow circulation and discharge parameters can further ensure that the power supply is more stable and reliable when the DC power supply with a voltage of 10kV-40kV and a rated power of 1000W-1500W is used to realize the sliding arc plasma process.
  • the sealed space is a container or a pipeline or a room; the container or pipeline is made of corrosion-resistant material, or the inner wall is a corrosion-resistant coating; one end of the pipeline is connected to the The air inlet end is communicated with the air outlet end; the other end is communicated with the air outlet end.
  • the sealed space is provided with an air inlet and an air outlet that can be opened and closed. It is used to change the type of reactive gas in the sealed space, and it can also discharge the plasma sterilization gas to other environments that require sterilization.
  • the air supply can be replenished in a controlled manner and the bactericidal gas can be discharged to the outside through the openable and closable air inlet and outlet.
  • the present invention also includes a preparation method of plasma sterilization gas, including using the device, which specifically includes the following steps:
  • the sealed space contains nitrogen, oxygen, air, argon, helium or a mixture thereof through the air inlet into the space;
  • Nitrogen, oxygen, air, argon, helium or their mixed gas can realize the ionization of sliding arc plasma. After the device is turned on, it can ensure continuous discharge and cycle ionization for many times until the sterilizing gas reaches a certain concentration. Bactericidal effects, such as lower concentrations, lead to unstable free radicals and faster annihilation. .
  • a preferred embodiment of the present invention further includes step 3) continuously feeding nitrogen, oxygen, air, argon, helium or a mixture thereof through the air inlet; It can be adjusted to ensure that the plasma gas concentration in the sealed space does not drop.
  • ionized gas By continuously feeding in the reactive gas, ionized gas can be continuously generated and output through the exhaust port. At the same time, the intake and exhaust flow should not be too fast. Too fast will cause the plasma gas concentration in the space to decrease.
  • the gas ionization rate can be adjusted by the air intake speed, power supply parameters, insulation and high temperature resistant pipe diameter, electrode parameters, etc., to ensure the maximum, timely and efficient continuous output of plasma sterilization gas.
  • the present invention also includes a method for sterilizing by applying a device or a preparation method, wherein the sealed space is placed with the object to be sterilized or filled with the gas to be sterilized, or connected to the container to be sterilized or the space to be sterilized through an exhaust port; Alternatively, the sterilizing plasma generating device is placed in the space to be sterilized or in the channel of the fresh air system.
  • the space itself can be used as a container, and the items that need to be sterilized are placed inside; at the same time, the exhaust port can output sterilization plasma gas, such as a sealed bag containing the items to be sterilized, or another sealed cavity, or even a Into a public space area, or supply into the room through the fresh air system, etc., for larger spaces, the required duration is longer.
  • sterilization plasma gas such as a sealed bag containing the items to be sterilized, or another sealed cavity, or even a Into a public space area, or supply into the room through the fresh air system, etc., for larger spaces, the required duration is longer.
  • the device can also be directly placed in the space to be sterilized or in the channel of the fresh air system, and the amount of output sterilizing gas can be controlled through the open and closed air inlets and exhaust ports.
  • the generating device of the present invention can continuously ionize the gas in repeated cycles, it can realize a relatively stable plasma gas, and improve its stability, portability and applicability.
  • the present invention has a simple structure, the gas in the space circulates in the insulating high temperature resistant tube to form multiple sliding arc discharge ionizations, and the continuous ionized gas can excite and ionize to form a large number of free radicals OH ⁇ .
  • the sterilization activity of the plasma inside the sealed space has high timeliness and short-term stability, and is a green, environmentally friendly and residue-free sterilization method.
  • the insulating high temperature resistant tube of the present invention can withstand the high temperature of more than 2000°C in the center of the sliding arc, which is conducive to long-term stable discharge ionization.
  • the fan can also disperse the heat of the insulating high temperature resistant tube and the electrode in time while circulating the gas. and cooling.
  • the present invention adopts a DC power supply with a voltage of 10kV-40kV and a rated power of 1000W-1500W, which is easy to generate sliding arcs, and the central temperature is lower than 2000 ° C, which is much lower than the central temperature of industrial sliding arc discharge, which is conducive to active ions in life. generation and sterilization.
  • the cost of the power supply of the present invention is low, the stability and safety of generating the sliding arc are good, and the disinfection and sterilization effect is obviously better than that of other atmospheric plasma discharge modes.
  • Ceramic or quartz is a good insulating and high temperature resistant material.
  • the diameter is controlled at 10mm-100mm to meet the needs of various occasions.
  • the distance between the electrode position and the two ends of the high temperature resistant tube is greater than 1cm, which ensures that the heat can be fully diffused and discharge is safe.
  • the rate of plasma excitation can be controlled by controlling the airflow speed of the fan. The higher the wind speed, the faster the plasma excitation rate.
  • the wind speed also controls the arc length of the sliding arc.
  • the arc length is 2cm-6cm, which can produce stable ionization.
  • the columnar shape with an electrode diameter of 1mm-3mm has a small wind resistance, and the distance between the two electrodes is 5mm-70mm to ensure the stability of the discharge.
  • the parameter setting of the electrodes can also further ensure that the voltage of the power supply is 10kV-40kV, and the rated power is 10kV-40kV.
  • the 1000W-1500W DC power supply realizes the sliding arc discharge ionization process is more stable and reliable.
  • the air source can be supplemented and the sterilizing gas can be output to the outside in a controlled manner.
  • the sliding arc discharge is a relatively direct discharge method.
  • the discharge electrode can be energized under normal pressure and can be realized in a form of gas ionization, and the formed plasma is a It is a non-charged gas, and the heat generated during the discharge process is diffused in time through the circulating airflow, which is safe, stable, portable, and low in temperature.
  • the types and concentrations of effective bacteriostatic components in the plasma are adjusted by controlling the power supply, electrode spacing and gas species. In this mode, no flame will be generated, nor will it lead to unstable discharge. It is safe, reliable, easy to operate and has no residue.
  • the gas preparation reaction chamber is a closed space, which can effectively avoid the risk of contact.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Embodiment 2 is a schematic structural diagram of Embodiment 2 of the present invention.
  • FIG. 3 is a schematic structural diagram of Embodiment 3 of the present invention.
  • a sterilization plasma generating device comprising a sliding arc discharge reactor, an air circulation device 5 and a sealed space 10;
  • the air circulation device 5 includes a fan; the air inlet end (not shown in the figure) and the air outlet end of the air circulation device 5 are respectively communicated with the sealed space 10, and the space between the air circulation device and the sealed space
  • the air inlet end and the air outlet end constitute a sealed communication arrangement
  • the air circulation device 5 is arranged inside the sealed space 10, that is, it actually constitutes a sealed communication arrangement.
  • the air circulation device 5 can be the fan itself, and the intake end and the air outlet end of the fan are the air intake end and the air outlet end of the air circulation device 5 .
  • the airflow circulation device 5 can also be a fan with a fan, or has a casing with a fan inside. In short, the air circulation device 5 only needs to satisfy the blowing and air intake.
  • the sliding arc discharge reactor includes a power source 1 and two electrodes 4 arranged in parallel; the power source 1 is connected with the electrodes 4; the gas outlet is an insulating high temperature resistant pipe 3, or the gas outlet is connected with an insulating high temperature resistant pipe 3, the electrode 4 is arranged in the insulating high temperature resistant tube 3;
  • the plasma sliding arc 6 is blown out from the electrode 4 area.
  • the sealed space is provided with an openable and closable air inlet 7 and an air outlet 8;
  • the airflow rate is 1.0L/min-1000L/min.
  • the power supply is a DC power supply with a voltage of 10kV-40kV and a rated power of 1000W-1500W.
  • the working voltage of the power supply is controlled to be 5kV-20kV, and the actual power is 200W-1000W.
  • the electric wire of the power source and the electric wire of the electrode are connected by the electric wire connector 2 .
  • the insulating high temperature resistant tube is a ceramic tube or a quartz tube, the inner diameter is 10mm-100mm, and the electrode position is greater than 1 cm from both ends of the high temperature resistant tube; preferably, the overall length of the insulating high temperature resistant tube is greater than 10 cm.
  • a ceramic tube is suitable, which is easy to process.
  • the airflow of the fan is 0.1m/s-10m/s, and the arc length of the blowing sliding arc is 1cm-6cm.
  • the electrode shape is a column with a diameter of 1mm-3mm, and the distance between the two electrodes is 5mm-70mm.
  • the sealed space is a container or a pipeline; it is made of a corrosion-resistant material, or the inner wall is a corrosion-resistant material; or the sealed space is a room.
  • Other air pipes and wires are insulated to ensure safe operation.
  • the sealed space can be made of acrylic plate, glass sheet, tetrafluoroethylene, ceramics and other materials.
  • the airtight container 10 may have a cover body, the air inlet 7 and the air outlet 8 are provided on the cover body, the air inlet is provided with a switch 1, and the air outlet is provided with a switch 2, which is used to adjust the gas flow. concentration and the amount of gas in and out.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 2 shows a schematic diagram of Embodiment 2 of the present invention
  • the air circulation device 5 in the second embodiment is arranged outside the sealed space 10, wherein the gas outlet end communicates with the sealed space 10, and the air inlet end communicates with the sealed space through the air return pipe 9.
  • FIG. 3 shows a schematic diagram of Embodiment 3 of the present invention
  • both the power source 1 and the air circulation device 5 are arranged inside the sealed cavity, and the power source 1 and the air circulation device 5, wires, and pipelines all need to be treated with corrosion resistance.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the present invention also relates to a preparation method of plasma sterilization gas, which specifically includes the following steps:
  • the sealed cavity contains nitrogen, oxygen, air, argon, helium or a mixture thereof through the air inlet;
  • Nitrogen, oxygen, air, argon, helium or their mixtures can be injected into the cavity in advance; if air ionization is used, the cavity directly contains air.
  • step 3) continuously feeding nitrogen, oxygen, air, argon, helium or a mixture thereof through the air inlet; the air outlet exhausts gas, and the air intake and exhaust flow are to ensure the sealing The content of active substances in the cavity does not decrease.
  • the airflow rate is 1.0L/min-10L/min.
  • the airflow of the fan is 0.1m/s-1m/s, and the arc length of the blowing sliding arc is 2cm-6cm.
  • the types and concentrations of effective bacteriostatic components in the plasma are adjusted by controlling the power supply, electrode spacing and gas species.
  • the gas flow rate is 1.5L/min
  • the ventilation time is 2min
  • the discharge power is 500W
  • the sliding arc discharge processing time is 20s, 40s, 60s, 80s in a cubic container with a closed space specification of 30 ⁇ 30 ⁇ 30cm. , 100s, 120s.
  • Table 1 shows the degree of reduction in the number of sterilizing colonies of plasma gas prepared by introducing air, oxygen, argon and nitrogen respectively. Air, oxygen, nitrogen and argon all have a certain sterilization effect, of which argon has the lowest sterilization effect, and air is the best sterilization gas among the three gases.
  • the sterilization ability of plasma gas increases gradually with the increase of sterilization time.
  • the plasma gas prepared by discharging for 2 minutes can reach a sterile state, and the sterilization rate is as high as 99.99%.
  • Discharge time Air Argon nitrogen oxygen Discharge 20s inactivation efficiency% >90 >85 >85 >90 Discharge 40s inactivation efficiency% >99 >90 >99 Discharge 60s inactivation efficiency% >99.9 >90 >90 >99 Discharge 80s inactivation efficiency% >99.9 >99 >99 >99.9 Discharge 100s inactivation efficiency% >99.9 >99 >99 >99.9 Discharge 120s inactivation efficiency% >99.99 >99.9 >99.9 >99.99
  • the gas flow rate is 1.5L/min
  • the ventilation time is 2min
  • the discharge power is high power (500W) and low power (100W) through the air inlet
  • the sliding arc discharge The processing time is 20s, 40s, 60s, 80s, 100s, 120s, 140s, 160s, 180s, 200s, 220s, 240s.
  • the discharge power is high power (500W)
  • the plasma discharge gas composition is shown in Table 2.
  • the concentration of the plasma gas composition increases significantly with the increase of time. After the discharge treatment for 240s, the gas composition with the highest concentration is hydrogen peroxide. up to about 30%.
  • the composition of the plasma discharge gas is shown in Table 3. Compared with the high power discharge gas composition, the composition of the plasma gas is quite different. The hydrogen peroxide value after 240s of discharge is about 4.0%. Through this experiment, it can be found that the plasma discharge power has a strong influence on the concentration and magnitude of the plasma gas components formed.
  • the gas flow rate is 1.5L/min
  • the ventilation time is 2min
  • the discharge power is 500W
  • the sliding arc discharge treatment time is 20s, 40s, 60s, 80s in a cubic container with a closed space specification of 30 ⁇ 30 ⁇ 30cm. , 100s, 120s, 140s, 160s, 180s, 200s, 220s, 240s.
  • Oxygen, nitrogen and argon were respectively introduced to compare the concentration and quantity of plasma gas formed by discharge.
  • the inlet gas is oxygen, as shown in Table 4, compared with the air discharge under the same discharge time in Table 2, it can be found that the amount of hydrogen peroxide gas changes and decreases significantly when the discharge is 240s. It is related to the composition of the plasma gas formed after being ionized.
  • the hydrogen peroxide value is about 6.5% after 240s of discharge.
  • the hydrogen peroxide value can reach 11.5% after 240s of discharge.
  • the sterilization effect of the plasma gas has a certain dependence on the size of the space.
  • a sterilization rate of 4-6 logarithms can be achieved within 2-5min of discharge; the sterilization gas can be used in a sealed space of 500-1000L.
  • the sterilization rate of 4-6 logarithms can be achieved within 10min-30min.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the space or the pipeline leading to the environment to be sterilized; or the sterilization plasma generating device is placed in the space to be sterilized or the flow channel of the fresh air system.
  • the distance between the exhaust port and the sterilization container or the sterilization space or the pipeline is less than 1 m.
  • the stability of the plasma passing through this device is good, its stability is temporary, and the long-distance transportation will lead to the decrease of activity and no effect. Therefore, it is not recommended that the exhaust port is connected to the sterilization container or the sterilization space. Or the distance of the pipes is greater than 1m.

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Plasma & Fusion (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electromagnetism (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Plasma Technology (AREA)

Abstract

本发明涉及一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法，包括滑动弧放电反应器，气流循环装置和密封腔体；气流循环装置包括进气端，出气端和风扇；进气端与出气端分别与密封腔体连通，气流循环装置与密封腔体之间通过进气端和出气端构成密封连通；滑动弧放电反应器包括电源和两个电极；电源与电极相连；出气端为绝缘耐高温管，或连接绝缘耐高温管，电极设置在绝缘耐高温管内；电极区域在气流循环装置作用下吹出等离子体滑动弧。本发明结构简单，空间内的气体在绝缘耐高温管内循环流动并多次形成滑动弧放电，使得密封空间内部的等离子体气体的杀菌活性和时效性提高，并且具有短暂的稳定性，是一种绿色、环保、无残留的杀菌方法。

Description

一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法 技术领域
本发明属于空气及环境的杀菌消毒技术领域，具体涉及一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法。
背景技术
公共空间、生活环境以及物品表面存在各种有害细菌和病毒，一般的杀菌消毒手段，如紫外杀菌及酒精双氧水的杀菌，存在杀菌漏洞、不彻底等问题。常用的杀菌方法是物理杀菌方法，如超高压杀菌，高压电场杀菌，辐照杀菌，这些杀菌方法虽能一定程度灭杀物品表面及空间内存在的细菌和病毒，但会破坏产品的组织形态且杀菌效率低、能耗高，对人体和环境造成一定的安全危害。
等离子体气体是一种新型无残留的绿色杀菌技术，杀菌效果随等离子体放电产生模式的不同存在较大的差异。目前，介质阻挡放电杀菌的主要成分为臭氧离子且杀菌空间较小，仅限放电区域且杀菌气体对人体有危害，不环保。工业应用的滑动弧放电特点是温度高、能量利用率低；一般利用滑动弧的高温直吹的模式达到杀菌目的，且滑动弧放电的电极结构复杂，需要耐高温和水冷却系统，制造成本较高。工业滑动弧放电等离子体主要用于高温燃烧，产物中的活性物质寿命较短，空气仅经过了一次电离，杀菌效果和效率低，作用区域仅限于放电区域，多用于生活用水净化和杀菌。
发明内容
为了解决上述问题，本发明提供了一种等离子体杀菌装置、制备方法及杀菌方法，本发明结构简单，空间内的气体在绝缘耐高温管内循环流动反复滑动弧放电电离，持续电离形成等离子体气体，激发产生具有强烈杀菌效果自由基团OH.。该发明可在密封空间内部持续产生等离子体气体且浓度梯度不断升高，保证等离子体气体的杀菌活性及时效性较高，并且具有短暂的稳定性，是一种绿色、环保、无残留的杀菌方法。
密封空间内部的等离子体的杀菌活性物质的时效性较高，可维持5-60分钟的杀菌时长；所述密封空间内部的等离子体气体可对内部空气及其可接触的物体表面进行全面杀菌，可有效降低细菌和病毒造成的安全风险。
本发明的目的是这样实现的：
一种等离子体杀菌装置，包括滑动弧放电反应器，气流循环装置和密封空间；
所述气流循环装置包括风扇；所述气流循环装置的进气端与出气端分别与所述密封空间连通，所述气流循环装置与所述密封空间之间通过进气端和出气端构成密封连通设置；
所述滑动弧放电反应器包括电源和相对设置的两个电极；所述电源与所述电极相连；所述出气端为绝缘耐高温管，或者出气端连接有绝缘耐高温管，所述电极设置在所述绝缘耐高温管内；
所述等离子发生装置工作时，所述电极区域的等离子体气体在气流循环装置的作用下电离并被吹出绝缘通道，形成等离子体杀菌气体。
这里的相对设置是指两个电极的放电端的连线垂直于绝缘耐高温管的中心线。
本发明滑动弧放电反应器，产生滑动弧放电等离子体，激发、电离气体产生自由基离子；经过气流循环装置和密封空间之间的循环，对气体进行多次滑动弧电离。经验证，当自由基OH·和过氧化氢H 2O 2达到一定的含量后，空间内自由基和过氧化氢会达到一种稳定状态，活性不会在短时间内消失，时效性较高，可维持5-60分钟的杀菌时长。通过该发生装置的工作，在空间内产生大量且稳定状态的活性等离子体气体，为后续区域内以及区域外的杀菌消毒提供有力的保障。
另外，本发明采用的绝缘耐高温管可以抵挡滑动弧中心2000℃以上的高温，有利于维持稳定放电，同时循环气流可以将绝缘耐高温管、电极的热量及时扩散，保持等离子体反应器可长期连续工作。
本发明一种优选实施方式，所述电源为直流电源，电压为10kV-40kV，额定功率为1000W-1500W。
目前工业滑动弧放电等离子体，放电功率较高，一般10kW以上，使得滑动弧中心温度甚至达到6000℃，需要配备较大的气流系统和冷却装置，耗能高且不能长时间维持放电状态。经研究，本发明采用额定功率为1000W-1500W的直流电源，通过气流循环、电极形状和放电距离的匹配来降低滑动弧的放电功率，提高放电稳定性，保证该放电模式远低于常规的滑动弧放电功率并可长期维持这种放电状态，具有明显优于其他大气放电等离子体的杀菌效果和空间作用范围，整体较低的制造成本和使用的便携性与安全稳定性保证其在生活和环境中杀菌的产业化和市场化应用。另外，本发明的等离子体放电电源和发生装置的低成本，和在环境、生活中的固体、气体媒介进行高效、绿色无残留杀菌消毒的应用，是对工业滑动弧放电的一种创造性应用。
本发明一种优选实施方式，所述绝缘耐高温管为陶瓷管或者石英管，内部直径为 10mm-100mm；电极位置距离耐高温管两端大于1cm。
陶瓷或者石英是良好的绝缘耐高温材料，内部直径控制在10mm-100mm可以满足各种场合的需求，电极位置距离耐高温管两端大于1cm，是保证了热量能够扩散充分，保证放电安全。
本发明一种优选实施方式，所述风扇的气流为0.5m/s-10m/s，吹出滑动弧的弧长为2cm-6cm。
通过控制风扇的气流速度可以控制等离子体激发的速率，风速越高等离子体激发速率越快，但会导致放电电弧不稳定而发生断裂，风速过低会降低电离效率，产生活性成分较少。
本发明一种优选实施方式，电极形状为直径1mm-3mm的柱状，两电极间距在5mm-70mm。
电极直径1mm-3mm的柱状受风阻力小，两电极间距在5mm-70mm是保证了放电的稳定性。通过电极构造、气流循环和放电参数整体匹配可以进一步保证电源在采用电压为10kV-40kV，额定功率为1000W-1500W的直流电源下实现滑动弧等离体子体过程更加稳定可靠。
本发明一种优选实施方式，所述密封空间为容器或管路或者房间；所述容器或管路采用耐腐蚀材料制成，或者内壁为耐腐蚀涂层；所述管路的一端与所述进气端连通；另一端与所述出气端连通。
空间采用耐腐蚀材料保证装置不易被活性离子的腐蚀，装置耐久性好。
本发明的一种优选实施方式，所述密封空间上设置有可开闭的进气口和排气口。用于更换密封空间中的反应气体种类，也可以将等离子体杀菌气体排出至其他需要杀菌的环境。
通过可开闭的进气口和排气口可以控制地进行气源的补充以及向外输出杀菌气体。
本发明还包括一种等离子杀菌气体的制备方法，包括使用所述的装置，具体包括如下步骤：
1)密封空间内含有或者通过进气口向空间内通入氮气、氧气、空气、氩气、氦气或其混合气体；
2)开启电源和气流循环装置，持续地滑动弧放电时间维持在30s以上。
氮气、氧气、空气、氩气、氦气或其混合气体均可以实现滑动弧等离子体的电离，通过开启装置后保证持续地放电，循环多次电离，直至杀菌气体达到一定浓度才能实现较好 的杀菌效果，如浓度较低，导致自由基不稳定而较快湮灭。。
本发明一种优选实施方式，还包括步骤3)通过进气口持续通入氮气、氧气、空气、氩气、氦气或其混合气体；排气口向外排出气体，进气和排气流量可以调整以保证所述密封空间内等离子体气体浓度不下降。
通过持续通入反应气体可以不断地产生电离气体，通过排气口向外输出，同时进气和排气流量不能过快，过快过导致空间内等离子体气体浓度下降，在通过控制风扇风速，进气速度，电源参数，绝缘耐高温管径，电极参数等可以调节气体电离速率，保证最大及时高效地持续输出等离子体杀菌气体。
本发明还包括一种应用装置或者制备方法进行杀菌的方法，所述密封空间放置待杀菌物或充入待消毒灭菌的气体，或者通过排气口连接待杀菌的容器或者待杀菌的空间；或者将所述杀菌等离子体发生装置放置于待杀菌空间内或者新风系统的通道中。
空间本身可以作为容器，内部放置需要杀菌的物品；同时排气口可以向外输出杀菌等离子体气体，如通入装有需要杀菌物品的密封袋，或者通入另一个密封腔体，甚至是通入一个公共的空间区域，或者通过新风系统供入房间等，对于较大的空间，需要的持续时间较长。
另外本装置也可以直接放置于待杀菌空间内或者新风系统的通道中，通过开闭的进气口和排气口控制输出杀菌气体的量。
由于本发明的发生装置可以反复循环持续电离气体，因此其可以实现较为稳定态的等离子气体，提高了其稳定性、便携性和适用性。
本发明至少具有以下有益效果：
1)本发明结构简单，空间内的气体在绝缘耐高温管内循环流动形成多次滑动弧放电电离，持续地电离气体可激发、电离形成大量的自由基团OH·。密封空间内部的等离子体的杀菌活性时效性高，并且具有短暂的稳定性，是一种绿色、环保和无残留的杀菌方法。
2)本发明的绝缘耐高温管可以耐受滑动弧中心2000℃以上的高温，有利于长期稳定维持放电电离，同时风扇在循环气体的同时，也可以将绝缘耐高温管、电极的热量及时扩散和降温。
3)本发明采用电压为10kV-40kV，额定功率为1000W-1500W的直流电源，易产生滑动弧，且中心温度低于2000℃，远低于工业滑动弧放电的中心温度，利于生活中活性离子产生和杀菌。另外本发明的电源成本低，产生滑动弧稳定性和安全性较好，具有明显优于 其他大气等离子体放电模式的消毒杀菌效果。
4)陶瓷或者石英是良好的绝缘耐高温材料，直径控制在10mm-100mm可以满足各种场合的需求，电极位置距离耐高温管两端大于1cm，是保证了热量能够扩散充分，保证放电安全。
5)通过控制风扇的气流速度可以控制等离子体激发的速率，风速越高等离子体激发速率越快，风速也同时控制滑动弧的弧长，弧长为2cm-6cm可以产生稳定的电离。
6)电极直径1mm-3mm的柱状受风阻力小，两电极间距在5mm-70mm是保证了放电的稳定性，通过电极的参数设置也可以进一步保证电源在采用电压为10kV-40kV，额定功率为1000W-1500W的直流电源的实现滑动弧放电电离过程更加稳定可靠。
7)通过可开闭的进气口和排气口可以控制地进行气源的补充以及向外输出杀菌气体。
8)本发明中，滑动弧放电是一种较为直接的放电方式，通过滑动弧放电反应器的设计，放电电极通电即可在常压下实现的一种气体电离形式，形成的等离子体是一种不带电的气体，放电过程中产生的热量通过循环气流及时扩散，具有安全、稳定、便携、温度低等特点。通过控制电源功率、电极间距和气体种类调整等离子体中的有效抑菌成分的种类和浓度。该模式下不会产生火焰，也不会导致放电不稳定，具有安全可靠，操作简单且无残留的特点。气体制备反应室为密闭空间，可有效避免接触性风险。
附图说明
图1为本发明实施例一结构示意图；
图2为本发明实施例二结构示意图；
图3为本发明实施例三结构示意图。
图中，1-电源；2-电线连接器；3-绝缘耐高温管；4-电极；5-气流循环装置；6-等离子体滑动弧；7-进气口；8-排气口；9-回气管；10-密封空间。
具体实施方式
下面结合附图对本发明作进一步说明。
实施例一
图1示出了本发明的实施例一示意图；
一种杀菌等离子体发生装置，包括滑动弧放电反应器，气流循环装置5和密封空间10；
所述气流循环装置5包括风扇；所述气流循环装置5的进气端(图中未示出)与出气 端分别与所述密封空间10连通，所述气流循环装置与所述密封空间之间通过进气端和出气端构成密封连通设置；
本实施例中可以看到，气流循环装置5设置在密封空间10内部，即也实际上构成了密封连通设置。
具体而言，气流循环装置5可以是风扇本身，风扇的进气端与出气端即为气流循环装置5的进气端和出气端。气流循环装置5也可以是带有风扇的风机，或者具有壳体，内部设置有风扇。总之气流循环装置5只要满足吹风和进风即可。
所述滑动弧放电反应器包括电源1和平行设置的两个电极4；所述电源1与所述电极4相连；所述出气端为绝缘耐高温管3，或者出气端连接有绝缘耐高温管3，所述电极4设置在所述绝缘耐高温管3内；
所述等离子体发生装置工作时，所述电极4区域吹出等离子体滑动弧6。
优选地，所述密封空间上设置有可开闭的进气口7和排气口8；
具体而言，气流流量为1.0L/min-1000L/min。
优选地，所述电源为直流电源，电压为10kV-40kV，额定功率为1000W-1500W。
具体而言，所述电源的工作电压控制为5kV-20kV，实际功率为200W-1000W。
具体而言，电源的电线与电极的电线之间通过电线连接器2连接。
其中，所述绝缘耐高温管为陶瓷管或者石英管，内部直径为10mm-100mm，电极位置距离耐高温管两端大于1cm；优选绝缘耐高温管整体长度大于10cm。
优选地，以陶瓷管为宜，易于加工。
具体而言，所述风扇的气流为0.1m/s-10m/s，吹出滑动弧的弧长为1cm-6cm。
具体而言，所述电极形状为直径1mm-3mm的柱状，两电极间距在5mm-70mm。
具体而言，所述密封空间为容器，或者管路；采用耐腐蚀材料制成，或者内壁为耐腐蚀材料；或者所述密封空间为房间。其他的气管和电线均具有绝缘性能，以保证操作安全。
优选地，密封空间可由亚克力板、玻璃片、四氟乙烯、陶瓷等材料制成。
具体而言，密封容器10可具有盖体，所述进气口7和排气口8设置在盖体上，进气口设置有开关一，排气口设置有开关二，用于调节气体的浓度和进出气体量。
实施例二：
图2示出了本发明的实施例二示意图；
与实施例一不同的是，实施例二气流循环装置5设置于密封空间10的外部，其中出 气端与所述密封空间10连通，进气端通过回气管9与密封空间连通。
实施例三：
图3示出了本发明的实施例三示意图；
与实施例一和实施例二不同的是，电源1和气流循环装置5均设置于密封腔体内部，其中电源1和气流循环装置5，导线，和管路等均需要做耐腐蚀处理。
实施例四：
本发明还涉及一种等离子杀菌气体的制备方法，具体包括如下步骤：
1)密封腔体内含有或者通过进气口向腔体内通入氮气、氧气、空气、氩气、氦气或其混合气体；
2)开启电源和气流循环装置，持续地滑弧放电至少30s。
腔体内部可以提前注入氮气、氧气、空气、氩气、氦气或其混合气体；如果使用空气电离，那么腔体内是直接含有空气的。
优选地，还包括步骤3)通过进气口持续通入氮气、氧气、空气、氩气、氦气或其混合气体；排气口向外排出气体，进气和排气流量以保证所述密封腔体内活性物质含量不下降。
具体而言，气流流量为1.0L/min-10L/min。
具体而言，所述风扇的气流为0.1m/s-1m/s，吹出滑动弧的弧长为2cm-6cm。
通过控制电源功率、电极间距和气体种类调整等离子体中的有效抑菌成分的种类和浓度。
一、放电气体种类、放电时间对等离子体气体灭菌效果的影响：
在密闭空间规格为30×30×30cm的立方体容器中通过进气口通入气体流量为1.5L/min、通气时间2min，放电功率为500W，滑动弧放电处理时间为20s，40s，60s，80s，100s，120s。分别通入空气、氧气、氩气和氮气，制备得到等离子体气体的杀菌菌落数的降低程度如表1所示。空气、氧气、氮气和氩气四种气体均具有一定的杀菌作用，其中氩气的杀菌效果最低，空气为三种气体中最佳的杀菌气体。等离子体气体杀菌能力随杀菌时间增长而逐渐增强，通过放电2min制备的离子体气体，能达到无菌状态，杀菌率高达99.99％。
放电时间s 空气 氩气 氮气 氧气
放电20s灭活效率％ ＞90 ＞85 ＞85 ＞90
放电40s灭活效率％ ＞99 ＞90 ＞90 ＞99
放电60s灭活效率％ ＞99.9 ＞90 ＞90 ＞99
放电80s灭活效率％ ＞99.9 ＞99 ＞99 ＞99.9
放电100s灭活效率％ ＞99.9 ＞99 ＞99 ＞99.9
放电120s灭活效率％ ＞99.99 ＞99.9 ＞99.9 ＞99.99
表1
二、放电功率与放电时间对等离子体气体成分的影响：
在密闭空间规格为30×30×30cm的立方体容器中通过进气口通入气体流量为1.5L/min、通气时间2min，放电功率为高功率(500W)与低功率(100W)，滑动弧放电处理时间为20s，40s，60s，80s，100s，120s，140s，160s，180s，200s，220s，240s。放电功率为高功率(500W)时其等离子体放电气体成分如表2所示，等离子体气体成分的浓度随时间的增长而显著增多，在放电处理240s后浓度最高气体成分为过氧化氢值可达30％左右。
当放电功率为低功率(100W)时，其等离子体放电气体成分如表3所示，等离子体气体成分相较于高功率放电气体成分有较大差异，在放电240s后过氧化氢值约为4.0％。通过此项实验可以发现等离子体放电功率对其形成的等离子体气体成分浓度与量值有较强影响。
放电时间s 过氧化氢浓度％
20-80 10.0＜
100-160 15.0＜
180-240 30.0＜
表2
放电时间s 过氧化氢浓度％
10-60 0.2＜
90-150 1.5＜
180-240 4.0＜
表3
三、放电气体种类和放电时间对等离子体气体成分的影响：
在密闭空间规格为30×30×30cm的立方体容器中通过进气口通入气体流量为1.5L/min、通气时间2min，放电功率为500W，滑动弧放电处理时间为20s，40s，60s，80s，100s，120s，140s，160s，180s，200s，220s，240s。分别通入氧气、氮气和氩气，对比放 电形成等离子气体浓度与量值。通入气体为氧气时，如表4所示，放电240s时相较于表2同等放电时间下所通空气放电可以发现，过氧化氢气体成分量有明显变化与减少，这一结果与不同气体被电离后形成的等离子体气体成分有关。
通入气体为氮气时，如表5所示，在放电240s后过氧化氢值约6.5％。
通入气体为氩气时，如表6所示，在放电240s后其过氧化氢值可达11.5％。通过此项实验可以发现通入不同气体对于等离子体气体的成分与量值均有较大影响，此外还可通过此实验的结果为今后实现气体成分的分离提供可行性参考。
放电时间s 过氧化氢浓度％
10-60 0.1＜
90-150 0.2＜
180-240 0.5＜
表4
放电时间s 过氧化氢浓度％
10-60 1.0＜
90-150 6.0＜
180-240 6.5＜
表5
放电时间s 过氧化氢浓度％
10-60 2.5＜
90-150 5.5＜
180-240 11.5＜
表6
四、放电时长和空间大小对等离子体气体杀菌率影响：
等离子体气体的杀菌效果对空间大小有一定的依赖性，在27L的空间内可实现放电2-5min内达到4-6个对数值的杀菌率；所述的杀菌气体在500-1000L的密封空间内在10min-30min内可达到4-6个对数值的杀菌率。
实施例五：
一种应用实施例一，实施例二，实施例三的装置或者实施例四的方法进行杀菌的方法，包括在所述密封腔体放置待杀菌物，或者通过排气口连接杀菌的容器或者杀菌的空间或者连通通向待杀菌环境的管道；或者将所述杀菌等离子体发生装置放置于待杀菌空间内或者新风系统的流道中。
优选地，所述排气口与所述杀菌容器或者所述杀菌空间或者所述管道的距离小于1m。
虽然经过本装置的等离子体稳定性较好，但是其稳定性是暂时的，长距离的输送会导致活性下降起不到效果，因此，不建议排气口与所述杀菌容器或者所述杀菌空间或者所述管道的距离大于1m。
以上所述，仅为本发明的优选实施方式，但本发明的保护范围并不局限于此，本领域技术人员应该理解，在不脱离由权利要求及其等同物限定其范围的本发明的原理和精神的情况下，可以对这些实施例进行修改和完善，这些修改和完善也应在本发明的保护范围内。

Claims (10)

  1. 一种等离子体杀菌装置，其特征在于，包括滑动弧放电反应器，气流循环装置和密封空间；
    所述气流循环装置包括风扇；所述气流循环装置的进气端与出气端分别与所述密封空间连通，所述气流循环装置与所述密封空间之间通过进气端和出气端构成密封连通设置；
    所述滑动弧放电反应器包括电源和相对设置的两个电极；所述电源与所述电极相连；所述出气端为绝缘耐高温管，或者出气端连接有绝缘耐高温管，所述电极设置在所述绝缘耐高温管内；
    所述等离子体杀菌装置工作时，气流将放电电极区域电离形成的等离子体吹出绝缘通道，形成等离子体杀菌气体。
  2. 如权利要求1所述的等离子体杀菌装置，其特征在于，所述电源为直流电源，电压为10kV-40kV，额定功率为1000W-1500W。
  3. 如权利要求2所述的等离子体杀菌装置，其特征在于，所述绝缘耐高温管为陶瓷管或者石英管，内部直径为10mm-100mm，电极位置距离耐高温管两端大于1cm。
  4. 如权利要求1-3所述的等离子体杀菌装置，其特征在于，所述风扇的气流为0.1m/s-10m/s，吹出滑动弧的弧长为1cm-6cm。
  5. 如权利要求4所述的等离子体杀菌装置，其特征在于，电极形状为直径1mm-3mm的柱状，两电极间距在5mm-70mm。
  6. 如权利要求1或5所述的等离子体杀菌装置，其特征在于，所述密封空间为容器或管路或者房间；所述容器或管路采用耐腐蚀材料制成，或者内壁为耐腐蚀涂层；所述管路的一端与所述进气端连通；另一端与所述出气端连通。
  7. 如权利要求6所述的等离子体杀菌装置，其特征在于，所述密封空间上设置有可开闭的进气口和排气口，用于更换密封空间中的反应气体种类，也可以将等离子体杀菌气体排出至其他需要杀菌的环境。
  8. 一种等离子杀菌气体的制备方法，其特征在于，包括权利要求1-7任一项所述的装置，具体包括如下步骤：
    1)密封空间内含有或者通过进气口向空间内通入氮气、氧气、空气、氩气、氦气或其混合气体；
    2)开启电源和气流循环装置，持续地维持滑动弧放电状态至少30s。
  9. 如权利要求8所述的等离子杀菌气体的制备方法，其特征在于，还包括步骤3)通过进气口持续通入氮气、氧气、空气、氩气、氦气或其混合气体；排气口向外排出气体， 进气和排气流量可以调节，以保证所述密封空间内和排出的气体中等离子体气体的浓度不下降。
  10. 一种应用权利要求1-7任一装置或者权利要求8-9任一制备方法进行杀菌的方法，其特征在于，所述密封空间放置待杀菌物体或充入待消毒灭菌的气体，或者通过排气口连接待杀菌的容器或者待杀菌的空间；或者将所述等离子体杀菌装置放置于待杀菌空间内或者新风系统的流道中。
PCT/CN2021/099593 2021-04-26 2021-06-11 一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法 WO2022227235A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110452599.2 2021-04-26
CN202110452599.2A CN113101389B (zh) 2021-04-26 2021-04-26 一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法

Publications (1)

Publication Number Publication Date
WO2022227235A1 true WO2022227235A1 (zh) 2022-11-03

Family

ID=76720100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/099593 WO2022227235A1 (zh) 2021-04-26 2021-06-11 一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法

Country Status (2)

Country Link
CN (1) CN113101389B (zh)
WO (1) WO2022227235A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113498843A (zh) * 2021-07-27 2021-10-15 珠海格力电器股份有限公司 食材处理装置以及食材处理方法
CN113841735B (zh) * 2021-09-14 2023-04-28 大连理工大学 一种用于奶酪杀菌的常压空气水雾等离子体灭菌装置及方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101732754A (zh) * 2010-01-28 2010-06-16 浙江大学 滑动弧放电-臭氧联合灭活空气中细菌病毒的方法与装置
US20100168499A1 (en) * 2006-08-18 2010-07-01 Drexel University Method and device for air disinfection and sterilization
WO2011138525A1 (fr) * 2010-05-05 2011-11-10 Pek 38-40 Procede et dispositif pour la generation d'un jet de plasma non- isothermique
US20130272929A1 (en) * 2012-04-06 2013-10-17 EP Technologies LLC Sanitization station using plasma activated fluid
CN104013985A (zh) * 2014-06-24 2014-09-03 中山大学 便携式微等离子体消毒器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050102600A (ko) * 2005-09-16 2005-10-26 플라즈마에너지자원 주식회사 플라즈마 탈취 살균기
CN101066791A (zh) * 2007-06-19 2007-11-07 中山大学 三相交流滑动弧非平衡等离子体污水处理装置
CN101156955B (zh) * 2007-11-21 2010-05-19 中山大学 非平衡等离子体式喷雾杀菌消毒剂发生装置
CN101844744B (zh) * 2010-04-13 2012-03-14 浙江大学 协同驱动旋转滑动弧放电等离子体重整甲烷制氢装置
CN201722188U (zh) * 2010-06-04 2011-01-26 浙江大学 磁驱动螺旋滑动弧非平衡等离子体废水处理装置
DE102013003865B4 (de) * 2013-03-06 2018-09-13 Al-Ko Therm Gmbh Verfahren und Vorrichtung zur Reinigung eines Gegenstandes
CN103997841B (zh) * 2014-05-30 2016-04-27 南京工业大学 手持便携式滑动弧低温等离子体的产生装置
CN204542941U (zh) * 2015-03-04 2015-08-12 南京克普医疗科技有限公司 封闭循环式等离子体消毒系统
CN105430863A (zh) * 2016-01-15 2016-03-23 成都布雷德科技有限公司 一种基于滑动电弧放电原理的等离子发生器
CN107344779A (zh) * 2016-05-06 2017-11-14 魏星 一种滑动弧放电低温等离子污水处理反应器
CN106268217B (zh) * 2016-10-08 2019-09-27 西安理工大学 NaOH协同气-液两相滑动弧放电脱除SO2的方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100168499A1 (en) * 2006-08-18 2010-07-01 Drexel University Method and device for air disinfection and sterilization
CN101732754A (zh) * 2010-01-28 2010-06-16 浙江大学 滑动弧放电-臭氧联合灭活空气中细菌病毒的方法与装置
WO2011138525A1 (fr) * 2010-05-05 2011-11-10 Pek 38-40 Procede et dispositif pour la generation d'un jet de plasma non- isothermique
US20130272929A1 (en) * 2012-04-06 2013-10-17 EP Technologies LLC Sanitization station using plasma activated fluid
CN104013985A (zh) * 2014-06-24 2014-09-03 中山大学 便携式微等离子体消毒器

Also Published As

Publication number Publication date
CN113101389B (zh) 2022-04-08
CN113101389A (zh) 2021-07-13

Similar Documents

Publication Publication Date Title
WO2022227235A1 (zh) 一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法
CN210932886U (zh) 一种等离子体灭菌消毒柜
CN201785237U (zh) 一种废水处理用dbd等离子体羟基自由基发生装置
CN110201201A (zh) 一种常温下等离子体灭菌装置及方法
CN104225638A (zh) 一种低于80℃的等离子体雾化灭菌装置
CN112294991B (zh) 一种等离子体灭菌消毒柜及消毒方法
CN112294992B (zh) 一种等离子体灭菌消毒柜及消毒方法
CN203807223U (zh) 一种等离子体放电装置
CN211434272U (zh) 一种等离子体灭菌消毒柜
Kuwahara Reduction in energy consumption using fuel cells in nonthermal plasma-based water sterilization by bubbling ozone
CN109392231A (zh) 一种不产生臭氧的冷等离子体发生装置
CN211214540U (zh) 一种等离子体灭菌消毒柜
CN205812485U (zh) 一种滑动弧放电等离子体射流装置
CN202907328U (zh) 一种管式介质阻挡放电等离子体产生系统
CN110092356B (zh) 气体流动控制的沿面介质阻挡放电臭氧发生装置及方法
CN103922457B (zh) 等离子体放电装置
CN217357406U (zh) 介质阻挡放电装置及空气净化器
CN110708851A (zh) 大气压下大间隙均匀介质阻挡放电等离子体表面处理装置
CN216878667U (zh) 一种塑料包装印刷产业用废气处理装置
Deng et al. Bacterial inactivation by atmospheric pressure dielectric barrier discharge plasma jet
TWI691237B (zh) 常壓電漿束產生裝置
CN113438789A (zh) 柔性大面积辉光放电等离子体消毒灭菌装置
CN102612250A (zh) 一种管式介质阻挡放电等离子体产生系统及其应用
CN112294990A (zh) 一种等离子体灭菌消毒柜及消毒方法
CN206229400U (zh) 一种细胞操作级高效超净台

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21938704

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21938704

Country of ref document: EP

Kind code of ref document: A1