CN113739327A - Low-temperature plasma micro-static sterilization system and method - Google Patents

Low-temperature plasma micro-static sterilization system and method Download PDF

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Publication number
CN113739327A
CN113739327A CN202111185165.7A CN202111185165A CN113739327A CN 113739327 A CN113739327 A CN 113739327A CN 202111185165 A CN202111185165 A CN 202111185165A CN 113739327 A CN113739327 A CN 113739327A
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sterilization
air
electrostatic
micro
outlet
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蒋雨兰
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JIANGSU AERTE AIR CONDITIONING INDUSTRIAL CO LTD
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JIANGSU AERTE AIR CONDITIONING INDUSTRIAL CO LTD
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0071—Electrically conditioning the air, e.g. by ionizing
    • B60H3/0078—Electrically conditioning the air, e.g. by ionizing comprising electric purifying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0691—Adsorption filters, e.g. activated carbon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The invention relates to the technical field of air purification and sterilization, in particular to a low-temperature plasma micro-electrostatic sterilization system and a method, which comprises air epidemic prevention and purification in a closed environment of a carriage and other public environments, wherein a plasma micro-electrostatic sterilization device generates negative ions while releasing strong electricity, the increased negative ions increase the oxygen content in the public environments, most of bacteria passing through a plasma region are attacked into fragments by plasma current, the high-efficiency inactivation of bacteria and fungi in the air of the public environments and other public environments can be realized within milliseconds, and radiation and other byproducts are not generated to achieve one-time purification and sterilization; and then the air is healthier by matching with the photocatalytic reaction of the photocatalytic device to carry out secondary purification and sterilization. The scheme has excellent epidemic prevention, sterilization and purification effects on closed environments and public places.

Description

Low-temperature plasma micro-static sterilization system and method
Technical Field
The invention relates to the technical field of air purification and sterilization, in particular to a low-temperature plasma micro-static sterilization system and method.
Background
With the rapid development of industrialization, the types of pollutants in the air are continuously increased, the particle size of solid pollutants is smaller and smaller, and the threat to the respiratory health of human beings is more and more serious. To reduce the pollution of the outside air to the room, one chooses to make few windows in an attempt to reduce the attack of dust, especially fine particulate matter represented by PM 2.5. However, this not only does not reduce the PM2.5 concentration, but also brings new hazards. Indoor air circulation is reduced, and especially vehicles such as automobiles and trains are inconvenient to open windows in the driving process, so that germs are easy to propagate, and a greater health threat is caused, so that the air purifiers gradually become mainstream living goods, and most of the air purifiers are internally provided with disinfection and sterilization technologies such as ultraviolet sterilization, plasma disinfection, hydroxide ion sterilization and the like.
Therefore, the Chinese patent with patent number 200710043790.1 discloses a circulating convection type ozone disinfection cabinet, which mainly comprises a cabinet body which effectively bears disinfected articles and has sealing performance, a sub-grid for loading documents and articles, an ozone generating device, an ozone gas circulating system, a humidifier and a control circuit, wherein a disinfection bin is arranged in the middle of the cabinet body, and a gas outlet at the lower end of the disinfection bin is connected with the ozone gas circulating generating system to form a circulating passage; two sides of the disinfection cabin are provided with gas return channels; a plurality of layered gratings are arranged in the disinfection bin; the power supply in the control circuit is connected with the CPU microprocessor, the CPU microprocessor is respectively connected with the liquid level sensor, the input circuit, the keys, the display and the solid relays, and each solid relay is respectively connected with the corresponding circulating air pump, the humidifier, the ozone generating device, the axial flow fan and the electromagnetic valve. Different disinfection time and holding time are set through the structural mode of the ozone gas circulation generation system and the up-and-down convection of the ozone gas, so that the concentration and the acting time of the ozone gas are controlled, different required disinfection action levels are achieved, and residual disinfected ozone gas can be automatically decomposed. However, the disinfection effect of the ozone disinfection cabinet is not obvious, and the disinfection efficiency is low.
Disclosure of Invention
The invention provides a low-temperature plasma micro-static sterilization system and method, which solve the technical problem of low indoor sterilization efficiency.
The invention provides a low-temperature plasma micro-static sterilization system for solving the technical problems, which comprises a circulating system arranged in a public environment, a plasma micro-static sterilization device arranged at an air return port of the circulating system, and a photocatalytic device arranged at an air outlet of the circulating system;
the plasma micro-electrostatic sterilization device is used for generating negative ions while discharging strong electricity, and the negative ions are diffused to a public environment through air flow at an air outlet position to perform primary purification sterilization and increase the oxygen content in the environment;
the photocatalytic device is used for carrying out secondary purification and sterilization on the air subjected to primary purification and sterilization through photocatalytic reaction, and then discharging the air to the circulating system through the air outlet for circulation.
Preferably, the sterilization system further comprises an adsorption filter, an inlet of the adsorption filter is hermetically connected with an air return inlet of the circulating system, and an outlet of the plasma micro-electrostatic sterilization device is located on an outlet air duct of the adsorption filter.
Preferably, the sterilization system further comprises a coarse filtration layer, a primary filter is arranged in the coarse filtration layer, an inlet of the coarse filtration layer is in sealing connection with an air return inlet of the circulating system, and an outlet of the coarse filtration layer is in sealing connection with an inlet of the adsorption filter.
Preferably, the sterilization system further comprises a polarized fiber adsorption device, an inlet of the polarized fiber adsorption device is hermetically connected with an outlet of the photocatalytic device, and an outlet of the polarized fiber adsorption device is communicated with an air outlet of the circulating system.
Preferably, the sterilization system further comprises a micro electrostatic ion ionization adsorption layer, an outlet of the photocatalytic device is hermetically connected with an inlet of the micro electrostatic ion ionization adsorption layer, and an outlet of the micro electrostatic ion ionization adsorption layer is hermetically connected with an air outlet of the circulation system.
Preferably, the sterilization system comprises an oxygen sensor and a controller, the oxygen sensor is used for monitoring the oxygen content of the public environment, and the controller controls the power of the plasma micro-electrostatic sterilization device according to the oxygen content, so that the oxygen content of the public environment ranges from 5% to 10%.
Preferably, the sterilization system further comprises a VOC gas sensor, the VOC gas sensor is used for monitoring the VOC content of the public environment, and when the VOC content of the public environment is smaller than a preset value, the controller controls the plasma micro-electrostatic sterilization device to be started or to increase the power.
Preferably, the plasma micro-electrostatic sterilization device comprises a temperature sensor, the temperature sensor is electrically connected with the controller, and the controller is used for controlling the power of the plasma micro-electrostatic sterilization device.
Preferably, the return air inlet and the air outlet of the circulation system are respectively positioned at two extremes of the public environment.
The invention also provides a method for the low-temperature plasma micro-electrostatic sterilization system, which comprises the following steps:
the circulating system discharges air into a closed environment and a public environment of a carriage through an air return opening, the plasma micro-electrostatic sterilization device generates negative ions while discharging strong electricity, and the negative ions are diffused into the public environment or the public environment through air flow at the air return opening for primary purification and sterilization;
and the air after plasma sterilization is subjected to secondary purification sterilization through the photocatalytic reaction of the photocatalytic device at the air outlet, and the air after the secondary purification enters the circulating system for recycling.
Has the advantages that: the application provides a low-temperature plasma micro-electrostatic sterilization system and a method, which comprises air epidemic prevention and purification in a closed environment of a carriage and other public environments, wherein a plasma micro-electrostatic sterilization device generates negative ions while releasing strong electricity, the increased negative ions increase the oxygen content in the public environments, most of bacteria passing through a plasma region are broken into fragments by plasma current, the high-efficiency inactivation of bacteria and fungi in the air of the public environments and other public environments can be realized within milliseconds, and radiation and other byproducts are not generated to achieve one-time purification and sterilization; and then the air is healthier by matching with the photocatalytic reaction of the photocatalytic device to carry out secondary purification and sterilization. The scheme has excellent epidemic prevention, sterilization and purification effects on closed environments and public places.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a functional block diagram of the low-temperature plasma micro-electrostatic sterilization system and method according to the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present invention provides a low-temperature plasma micro-electrostatic sterilization system and method, including a circulation system installed in a public environment, a plasma micro-electrostatic sterilization device installed at an air return port of the circulation system, and a photocatalytic device installed at an air outlet of the circulation system; the plasma micro-electrostatic sterilization device is used for generating negative ions while discharging strong electricity, and the negative ions are diffused to a public environment through air flow at an air outlet position to perform primary purification sterilization and increase the oxygen content in the environment; the photocatalytic device is used for carrying out secondary purification and sterilization on the air subjected to primary purification and sterilization through photocatalytic reaction, and then discharging the air to the circulating system through the air outlet for circulation. Most bacteria in the plasma area are broken into fragments by plasma current, so that the high-efficiency inactivation of bacteria and fungi in the air of the public environment can be realized within milliseconds, and primary purification and sterilization can be realized without generating radiation and other byproducts; and then the air is healthier by matching with the photocatalytic reaction of the photocatalytic device to carry out secondary purification and sterilization. The scheme has the advantages of concentrated return air, high speed and good sterilization and purification effects. The public environment comprises the environment of public areas such as the inside of a vehicle and the inside of a room.
The plasma micro-static sterilization device is characterized in that positive ions and negative ions simultaneously generated by a plasma generator generate huge energy release at the moment of neutralizing positive and negative charges in air, so that the structure of bacteria around the plasma micro-static sterilization device is changed or the energy is converted, the bacteria are killed, and the sterilization effect of the plasma micro-static sterilization device is realized. Because the quantity of the negative ions is greater than that of the positive ions, the redundant negative ions still float in the air, and the effects of eliminating smoke and dust, eliminating peculiar smell and improving the quality of the air can be achieved, so that the health care effect of human health is promoted.
Cold air discharged by the circulating system drives the plasma to cool so as to form low-temperature plasma, the low-temperature plasma is a fourth state of a substance with higher energy after solid, liquid and gas states, and the sterilization and the purification treatment of the low-temperature plasma in the air adopt a physical principle: high-energy electrons and free radical active particles generated by dielectric barrier discharge are utilized to react with bacteria and pollutants in the air, and then the pollutants are degraded through nano catalysis. The working principle is as follows: a low-temperature plasma close to room temperature is generated through a dielectric barrier discharge system, most of bacteria passing through a plasma area are broken into fragments by plasma current, and efficient inactivation of bacteria and fungi in the air can be realized within milliseconds, but radiation and other byproducts are not generated.
Wherein, the low-temperature plasma generated by the dielectric barrier discharge can effectively kill 17 common pathogenic bacteria (escherichia coli, staphylococcus aureus, micrococcus luteus, bacillus megatherium, bacillus subtilis and bacillus natto) and microorganisms in the air. Can achieve the extremely good effects of sterilization, disinfection and air purification, and especially has good effects of sterilization and bacteriostasis on the internal circulation of the air in the public environment of vehicles and trains.
The specific working principle is as follows:
the return air inlet of the circulating system has certain air speed, and the circulating system of the embodiment of the invention can be an air conditioner with a refrigerating or heating effect or a common internal circulation blower. Internal circulation is formed between an air return opening and an air outlet of the circulating system, air flow is generated, plasma is generated in a low-temperature plasma discharge area, a carriage is filled with the plasma under the driving of the air flow, bacteria and viruses in the public environment are directly punctured and killed by strong electrons, chemical pollutants are directly decomposed, and dust particles are effectively adsorbed under the action of charge. The low-temperature plasma barrier discharge device can generate a large amount of negative ions while discharging strong electricity, and the negative ions are diffused to the space of a public environment part under the driving of circulating air supply of a circulating system, so that the improvement on the environment in a vehicle can be realized at the same time. The air purification device increases the control function of automatic operation, and the purification device and the circulating system execute control in a coordinated manner, and when the air pollution index of the public environment exceeds a concentration value, the air purification device is automatically started to operate.
Preferably, the sterilization system further comprises an adsorption filter, an inlet of the adsorption filter is hermetically connected with an air return inlet of the circulating system, and an outlet of the plasma micro-electrostatic sterilization device is located on an outlet air duct of the adsorption filter. The air exhausted from the air return port of the circulating system is firstly adsorbed and filtered by the adsorption filter to filter out large granular substances, so that the subsequent plasma sterilization and disinfection of small harmful substances are facilitated. The adsorption filter generally adopts activated carbon adsorption.
Preferably, the sterilization system further comprises a coarse filtration layer, a primary filter is arranged in the coarse filtration layer, an inlet of the coarse filtration layer is in sealing connection with an air return inlet of the circulating system, and an outlet of the coarse filtration layer is in sealing connection with an inlet of the adsorption filter. The primary filter is mainly used for filtering dust particles with the particle size of more than 5 mu m. The outer frame is made of paper frame, aluminum frame and galvanized iron frame, the filtering material is made of non-woven fabric, nylon net, active carbon filtering material, metal mesh net, etc., and the protecting net is made of double-sided plastic-sprayed wire net and double-sided galvanized wire net, and may be plate type, folding type or bag type. Dust particles are filtered by the primary filter, or secondary particle adsorption filtration is carried out by the adsorption filter, so that the particles can not enter the public environment, and the plasma sterilization and disinfection in the subsequent steps are facilitated.
Preferably, the sterilization system further comprises a polarized fiber adsorption device, an inlet of the polarized fiber adsorption device is hermetically connected with an outlet of the photocatalytic device, and an outlet of the polarized fiber adsorption device is communicated with an air outlet of the circulating system. The air sterilized and disinfected by the plasma reaches the air outlet under the pushing action of the air duct of the circulating system, and enters the polarized fiber adsorption device for further disinfection and purification treatment. The polarized fiber adsorption device at the air outlet of the circulating system synergistically degrades toxic and harmful substances in the air, deodorizes and removes peculiar smell, and achieves the function of refreshing the environment in the vehicle. The dense polarized fibers form a high-voltage electrostatic field, so that the high-voltage electrostatic field has strong adsorption force on dust, and can simultaneously destroy the tissue structure of bacteria and kill the bacteria.
Then enters a photocatalytic device for photocatalytic reaction, and the photocatalytic principle is based on the oxidation-reduction capability of the photocatalyst under the condition of illumination, so that the aims of purifying pollutants, synthesizing and converting substances and the like can be fulfilled. In general, a photocatalytic oxidation reaction uses a semiconductor as a catalyst and light as energy to degrade organic substances into carbon dioxide and water. Therefore, the photocatalysis technology is used as an efficient and safe environment-friendly environmental purification technology to further improve the air quality of indoor or public environment. After the improvement, purified air can be obtained, and finally enters the circulating system through the air outlet for circulation.
Preferably, the sterilization system further comprises a micro electrostatic ion ionization adsorption layer, an outlet of the photocatalytic device is in sealing connection with an inlet of the micro electrostatic ion ionization adsorption layer, and an outlet of the micro electrostatic ion ionization adsorption layer is in sealing connection with an air outlet of the circulating system. The micro-static ion ionization adsorption layer is used as a secondary purification, disinfection and sterilization layer, can be used in parallel with the polarized fiber adsorption device in a synergistic manner, can also be used independently, and is specifically matched according to actual requirements. The micro electrostatic ion ionization adsorption can kill virus to achieve the effects of disinfection and sterilization. It adsorbs the particulate matter through high-voltage static, inactivates bacterial virus under high-voltage electric field's effect, not only reaches air purification's effect, disinfects the air even more.
Preferably, the sterilization system further comprises an ozone adsorption layer, an outlet of the photocatalytic device is in sealing connection with an inlet of the ozone adsorption layer, and an outlet of the ozone adsorption layer is in sealing connection with an air outlet of the circulating system. The ozone adsorption layer is used as an auxiliary disinfection and sterilization layer, can be used in parallel with the polarized fiber adsorption device in a synergistic mode, can also be used independently, and is specifically selected and installed according to actual requirements.
Preferably, the sterilization system comprises an oxygen sensor and a controller, the oxygen sensor is used for monitoring the oxygen content of the public environment, and the controller controls the power of the plasma micro-electrostatic sterilization device according to the oxygen content, so that the oxygen content of the public environment is in a range of 5% -10%. The device further comprises a VOC gas sensor, wherein the VOC gas sensor is used for monitoring the VOC content of the public environment, and when the VOC content of the public environment is smaller than a preset value, the controller controls the plasma micro-electrostatic sterilization device to be started or to increase the power. The plasma micro-electrostatic sterilization device comprises a temperature sensor, the temperature sensor is electrically connected with the controller, and the controller is used for controlling the power of the plasma micro-electrostatic sterilization device.
Therefore, the vehicle-mounted circulating system and the plasma micro-electrostatic sterilization device are electrically connected to the controller, and one or more of the temperature sensor, the humidity sensor, the oxygen sensor and the VOC (volatile organic compound) gas sensor are arranged at the return air position of the public environment to monitor the quality of the air of the public environment, and can also be arranged at other places of the public environment. The controller receives data from the single or multiple sensors and determines air quality. If the air quality is unqualified, for example, the oxygen content of the public environment exceeds the range of 5% -10%, the air quality is unqualified, and the controller controls the plasma micro-electrostatic sterilization device to increase the power. And or when the VOC content of the public environment is less than a preset value, the controller controls the plasma micro-electrostatic sterilization device to be started or to increase the power.
The oxygen content generated in the reaction chamber of the plasma purification unit and the monatomic oxygen and the free radicals have a balance, and under the influence of external reaction conditions, the decomposition of the oxygen can promote the formation of the monatomic oxygen and the free radicals; meanwhile, free radicals, monatomic oxygen and oxides and peroxides of organic matter in the plasma react; the existence of excess monatomic oxygen and free radicals can generate a reverse reaction to generate substances such as oxygen return gas, water and the like. Oxygen content of 5% to 10% promotes decomposition of organic gases and inactivation of fungi. The control system can monitor the concentration of oxygen in the low-temperature plasma evolution unit in real time, open the fresh air of the low-temperature plasma to introduce necessary air in real time according to the relation among the reactions, control the power of the plasma purification unit, change the reaction conditions, further adjust the reaction balance, optimize the conversion rate of the reaction, reduce the power consumption and achieve the aim of efficiently purifying the air in the vehicle by the body temperature plasma.
In the preferred scheme, the return air inlet and the air outlet of the circulating system are respectively positioned at two extremes of a public environment. Thus being beneficial to the plasma to fully reach all corners in the carriage or the room along with the wind flow, and realizing full-coverage sterilization and disinfection.
The embodiment of the invention also provides a low-temperature plasma micro-static sterilization method, which comprises the following steps: the circulating system discharges air into the public environment through the air return opening, the plasma micro-electrostatic sterilization device generates negative ions while discharging strong electricity, and the negative ions are diffused to the public environment through air flow at the air return opening for primary purification and sterilization; and circulating the air subjected to plasma sterilization to flow to an air outlet of the circulating system, performing secondary purification sterilization through photocatalytic reaction of a photocatalytic device at the air outlet, and allowing the air subjected to secondary purification to enter the circulating system for recycling.
The method is applied to the low-temperature plasma micro-electrostatic sterilization system, and the specific working principle and process are not repeated herein.
Has the advantages that:
the circulating system discharges air into the public environment through the air return opening, the plasma micro-electrostatic sterilization device generates negative ions while discharging strong electricity, and the negative ions are diffused to the public environment through air flow at the air return opening for primary purification and sterilization; and circulating the air subjected to plasma sterilization to flow to an air outlet of the circulating system, performing secondary purification sterilization through photocatalytic reaction of a photocatalytic device at the air outlet, and allowing the air subjected to secondary purification to enter the circulating system for recycling. The scheme is used for air epidemic prevention and purification of a carriage closed environment and other public environments, negative ions are generated while a plasma micro-static sterilizing device releases strong electricity, the increased negative ions increase the oxygen content in the public environment, most bacteria in a plasma area are broken into fragments by plasma current, the high-efficiency inactivation of bacteria and fungi in the public environment and other public environment air can be realized within milliseconds, and radiation and other byproducts are not generated to achieve one-time purification and sterilization; and then the air is healthier by matching with the photocatalytic reaction of the photocatalytic device to carry out secondary purification and sterilization. The scheme has excellent epidemic prevention, sterilization and purification effects on closed environments and public places.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (10)

1. A low-temperature plasma micro-static sterilization system comprises a circulating system arranged in a public environment, and is characterized by also comprising a plasma micro-static sterilization device arranged at an air return opening of the circulating system and a photocatalytic device arranged at an air outlet of the circulating system;
the plasma micro-electrostatic sterilization device is used for generating negative ions while discharging strong electricity, and the negative ions are diffused to a public environment through air flow at an air outlet position to perform primary purification sterilization and increase the oxygen content in the environment;
the photocatalytic device is used for carrying out secondary purification and sterilization on the air subjected to primary purification and sterilization through photocatalytic reaction, and then discharging the air to the circulating system through the air outlet for circulation.
2. The low-temperature plasma micro-electrostatic sterilization system according to claim 1, further comprising an adsorption filter, wherein an inlet of the adsorption filter is hermetically connected with an air return inlet of the circulation system, and an outlet of the plasma micro-electrostatic sterilization device is located on an outlet air duct of the adsorption filter.
3. The low-temperature plasma micro-electrostatic sterilization system according to claim 2, further comprising a coarse filtration layer, wherein a primary filter is arranged in the coarse filtration layer, an inlet of the coarse filtration layer is hermetically connected with an air return inlet of the circulation system, and an outlet of the coarse filtration layer is hermetically connected with an inlet of the adsorption filter.
4. The low-temperature plasma micro-electrostatic sterilization system according to claim 1, further comprising a polarized fiber adsorption device, wherein an inlet of the polarized fiber adsorption device is hermetically connected with an outlet of the photocatalytic device, and an outlet of the polarized fiber adsorption device is communicated with an air outlet of the circulation system.
5. The low-temperature plasma micro-electrostatic sterilization system according to claim 1 or 4, further comprising a micro-electrostatic ion ionization adsorption layer, wherein an outlet of the photocatalytic device is hermetically connected with an inlet of the micro-electrostatic ion ionization adsorption layer, and an outlet of the micro-electrostatic ion ionization adsorption layer is hermetically connected with an air outlet of the circulation system.
6. The system according to claim 1, wherein the sterilization system comprises an oxygen sensor for monitoring the oxygen content of the public environment and a controller for controlling the power of the plasma micro-electrostatic sterilization device according to the oxygen content, so that the oxygen content of the public environment is in the range of 5% to 10%.
7. The system according to claim 6, further comprising a VOC gas sensor for monitoring the VOC content of the public environment, wherein the controller controls the plasma micro-electrostatic sterilization device to be turned on or powered up when the VOC content is less than a preset value.
8. The system according to claim 6, wherein the plasma micro-electrostatic sterilization device comprises a temperature sensor electrically connected to the controller, the controller being configured to control the power of the plasma micro-electrostatic sterilization device.
9. The system according to claim 1, wherein the return air inlet and the air outlet of the circulating system are located at two extremes of the public environment.
10. A method for the low temperature plasma micro-electrostatic sterilization system according to any one of claims 1 to 9, comprising:
the circulating system discharges air into a closed environment and a public environment of a carriage through an air return opening, the plasma micro-electrostatic sterilization device generates negative ions while discharging strong electricity, and the negative ions are diffused into the public environment or the public environment through air flow at the air return opening for primary purification and sterilization;
and the air after plasma sterilization is subjected to secondary purification sterilization through the photocatalytic reaction of the photocatalytic device at the air outlet, and the air after the secondary purification enters the circulating system for recycling.
CN202111185165.7A 2021-10-12 2021-10-12 Low-temperature plasma micro-static sterilization system and method Pending CN113739327A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114688676A (en) * 2022-05-31 2022-07-01 雷神等离子科技(杭州)有限公司 Full-space coverage plasma disinfection equipment and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114688676A (en) * 2022-05-31 2022-07-01 雷神等离子科技(杭州)有限公司 Full-space coverage plasma disinfection equipment and method

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