CN115388509A - Air purification system for preventing biological pollution and purification method thereof - Google Patents

Air purification system for preventing biological pollution and purification method thereof Download PDF

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Publication number
CN115388509A
CN115388509A CN202211033603.2A CN202211033603A CN115388509A CN 115388509 A CN115388509 A CN 115388509A CN 202211033603 A CN202211033603 A CN 202211033603A CN 115388509 A CN115388509 A CN 115388509A
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liquid
air
purification
flow
blocking
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CN202211033603.2A
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CN115388509B (en
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王素兰
谭淋
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Chengdu Feifan Microshield Biotechnology Co ltd
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Chengdu Feifan Microshield Biotechnology Co ltd
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Priority to CN202211033603.2A priority Critical patent/CN115388509B/en
Publication of CN115388509A publication Critical patent/CN115388509A/en
Priority to PCT/CN2023/082933 priority patent/WO2024040956A1/en
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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
    • F24F8/117—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 wet filtering
    • F24F8/133—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 wet filtering by direct contact with liquid, e.g. with sprayed liquid
    • 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
    • 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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • 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
    • 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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
    • 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)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (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 aims to solve the problems of large wind resistance, difficult air dispersion, low energy efficiency ratio (wind volume/power), low purification efficiency, easy carrying of microorganisms into the environment after being wrapped by water liquid and low or basically ineffective sterilization efficiency in the prior art; the water bath purification system and the drying liquid-blocking system form a closed space; liquid bead particles generated by the water bath purification system reach the drying liquid-blocking system through air flow in the closed space; at least one or more of the air supply system, the water bath purification system and the drying and liquid blocking system are required in the same system. The invention has the advantages of small wind resistance, easy air dispersion, high energy efficiency ratio (wind quantity/power), high purification efficiency, difficult introduction of microorganisms into the environment and high sterilization efficiency.

Description

Air purification system for preventing biological pollution and purification method thereof
Technical Field
The invention relates to the technical field of air purification, in particular to a biological pollution prevention air purification system and a purification method thereof.
Background
In modern society, urban residents and workers are located in rooms or vehicles for 80-90% of the time, and old people and infants with inconvenient actions reach more than 95%, so that the cleanness and safety of indoor air are maintained, and the basic guarantee of human health is realized, so that indoor air pollution control, especially effective biological pollution solving, is imperative, but because the source of the air pollution is extremely complex, the components are various, the area is wide, and the control and prevention are difficult, and under the prior art condition, the indoor air purification device is the most direct, effective and economic solution.
In technical aspect, the technical scheme disclosed at present is that water bath liquid purification and high-efficiency super-hydrophobic membrane surface filtration are two types of biological purification schemes with higher efficiency; the water bath liquid purification is an ideal comprehensive air purification technology by utilizing the adsorption, wrapping and dissolution characteristics of liquid, but has the problems of large liquid wind resistance, difficult air dispersion, low energy efficiency ratio (wind volume/power), low purification efficiency, easy introduction of microorganisms into the environment after being wrapped by water liquid, and the like; the efficient super-hydrophobic membrane filtration is different from the conventional filtration material which utilizes Van der Waals force to adsorb dust particles, but utilizes the super-hydrophobic characteristic of the surface of the membrane layer to carry out surface filtration, has high filtration efficiency and high bacteria blocking rate, can be repeatedly used for cleaning, and has the problems of easy surface dust deposition failure, no sterilization function, easy secondary pollution and the like.
In summary, the conventional products have low efficiency or are basically ineffective in killing and purifying biological pollution such as bacteria and viruses, and some technologies with better sterilization performance still have more practical defects and are difficult to form products to market.
Disclosure of Invention
The invention aims to provide a biological pollution prevention air purification system and a purification method thereof, and aims to solve the problems that in the prior art, the wind resistance is large, the air dispersion is difficult, the energy efficiency ratio (wind volume/power) is low, the purification efficiency is low, microorganisms are easily wrapped by water and then brought into the environment, and the sterilization efficiency is low or basically ineffective.
The embodiment of the invention is realized by the following steps:
the embodiment of the invention provides a biological pollution prevention air purification system, which comprises an air supply system, a water bath purification system and a drying liquid blocking system;
the water bath purification system and the drying liquid-blocking system form a water-blocking and ventilating closed space, and the air supply system, the water bath purification system and the drying liquid-blocking system can be connected or integrated in series according to the requirements of a use environment;
liquid bead particles generated by the water bath purification system reach the drying liquid-blocking system through the air flow in the closed space;
at least one or more of the air supply system, the water bath purification system and the drying liquid-blocking system are required to be arranged in the same system;
when the water bath purification system is used as a terminal purifier with an external air source such as an air conditioner or a central air circulation system, the water bath purification system and the drying liquid-blocking system can be only included according to the specific situation of the external air source.
The biological pollution prevention air purification system disclosed by the embodiment systematically solves the problems of large resistance and low energy efficiency ratio of a water bath purification system through a series of comprehensive technical means such as pressurization and air supply of the fan, transverse air transmission below the liquid level of the purification liquid, discontinuous multi-order dispersion, time delay of the spoiler, a drying liquid blocking system and the like, so that the air flow can still keep a certain pressure after passing the liquid in the water bath purification system, effectively permeates the drying liquid blocking system, and realizes self-cleaning of all parts of the drying liquid blocking system on the surface by utilizing the scouring action of the liquid carried in the air flow;
the air supply system, the water bath purification system and the drying liquid blocking system are connected or integrated in series, so that the system meets the market requirements, is safe, reliable and efficient, and has good purification effect on physical and chemical pollution.
Optionally: the air supply system is provided with an alternating current or direct current fan capable of providing a certain air pressure, the fan is mutually sealed and connected in series with the water bath purification system through an air pipe or an air channel, the static pressure of the fan is more than or equal to 800Pa, the optimal static pressure of the fan can be in the range of 1200 Pa-2500 Pa, and the rated energy efficiency ratio of the fan is more than or equal to 2.5m 3 /w·h。
So set up for the air current that flows through among air supply system, water bath purification system and the dry liquid system that hinders can only the circulation of serial-type, avoids not contacting through the filterable air current of above-mentioned water bath purification system and the filterable air current through above-mentioned water bath purification system, and then influences the filterable air current cleanliness factor of above-mentioned dry liquid system that hinders.
Optionally: the air inlet of the fan is provided with a fixed or detachable reusable or disposable primary filter layer.
So set up, above-mentioned just imitate the filter layer and be arranged in the coarse particle thing of filtering external environment, avoid it to enter the fan in, set up above-mentioned just imitate the filter layer into repeatedly usable or disposable in addition.
Optionally: the water bath purification system comprises purification liquid, a flow baffle and a disperser, wherein the flow baffle surface can be planar, inclined, wavy or zigzag and is used for prolonging the retention time of dispersed gas phase flow under the liquid surface;
a conical air guide sleeve is arranged at the axis position of the air duct of the through hole, and an air passage is formed between the conical air guide sleeve and the spoiler;
the air supply system inputs airflow into the purified liquid in a direction perpendicular to the liquid level of the purified liquid or in a certain angle, the airflow is transversely dispersed in a direction parallel to the liquid level or in a certain angle through the air passage on the conical diversion cover, a plurality of holes/grooves structures are arranged in the whole air passage of the disperser, and the airflow is crushed and mixed into the purified liquid through the disperser;
the plane of the flow blocking plate can be completely parallel to the liquid surface of the purifying liquid, or form a forward or reverse included angle of less than 90 degrees with the liquid surface.
The arrangement is that the disperser disperses the airflow discontinuously and discontinuously, so that the loss of the airflow in the dispersing process is greatly reduced, the arrangement of the spoiler can effectively prevent the airflow from floating upwards from the air outlet, the airflow is guided by the spoiler and transversely moves in a direction parallel to the liquid surface or at a certain angle with the liquid surface under the liquid surface, the defect that the mixing time of the airflow and the liquid is insufficient due to shallow liquid level arrangement of the purified liquid is avoided, the gas-liquid mixing time can be arbitrarily prolonged according to the requirement, the loss of the water passing air volume of the system is less than or equal to 20 percent through the application of the disperser, and the water passing air pressure is kept to be more than or equal to 200Pa;
the air flow and liquid mixture in each direction in the water bath purification system continuously and circularly collide with each other in the high-speed movement process to generate a large amount of water droplet particles and negative ions, and harmful substances such as dust particles, VOCs, formaldehyde, bacteria, viruses and the like in the air are captured and reside in the solution under the large-area and all-around adsorption action of the continuous liquid phase flow, the dispersed liquid phase flow, the liquid droplet particles and the negative ions, so that the purification work of pollutants is completed.
Optionally: the water and air pressure retention of the disperser is more than 200pa;
under the condition of not working, the pressure intensity generated by the designed water level depth of the air outlet is not more than the rated air pressure of the fan, the designed water level depth of the air outlet can be set to be in the range of 0cm to 6cm below the liquid level of the purifying liquid, or in the range of 1cm above the liquid level to 2cm below the liquid level, and the optimal range is set to be in the range of 0cm to 2cm below the liquid level.
So set up for the water pressure of above-mentioned air outlet is less than the rated wind pressure of above-mentioned fan, and the aforesaid fan of being convenient for is impressed above-mentioned scavenging solution with the air current and is filtered the back and arrange above-mentioned closed space from above-mentioned air outlet, and the aforesaid is convenient for dry hinders liquid system secondary filter.
Optionally: the purifying liquid is immersed in the purifying liquid in a sheet shape, a block shape or a spherical shape with polyurethane foam, active carbon particles and zeolite powder porous solid materials, so that gas phase flow is further dispersed, the contact area is increased, the fluctuation range of the liquid level is reduced, the gas flow in the cavity is balanced, and the vibration and the noise of the system are reduced.
Optionally: the purifying liquid has long-acting, safe, reproducible and broad-spectrum sterilization and virus killing effects;
the above-mentioned purifying liquid components include but are not limited to: water, glycerol, fatty alcohols, fatty polyols, fatty ketones, vegetable oils, animal fats, polyethylene glycols and silicone oils, and optionally comprising one or more additives independently selected from the group consisting of: alkali metal salts, polyethylene glycols, lysozyme, sodium bisulfite, carbon black, reducing sugars, vitamin C, zinc oxide, silver nitrate, mineral acids, sodium bicarbonate, sodium hydroxide, bleaches, quaternary ammonium salts, glycerin, hydrogels, hydrosols, superabsorbents, EDTA, silica gel, alumina, absorbent clays, organic polymers, starches, amino acids, cyclodextran, C1-C6 mono-, di-or trialkylamines, polymeric amines, detergents, bactericides, organic scavengers, fragrances, air fresheners, microorganisms capable of degrading pollutants, detergents, ammonia, disinfectants, aquatic plants, rare earth metal catalysts and bactericides.
Optionally: the drying liquid-blocking system is arranged at a certain angle or horizontally with the horizontal plane of the purified liquid, the installation range of the drying liquid-blocking system is between 0 and 89 degrees or between 30 and 60 degrees, and the outer periphery of the drying liquid-blocking system is fixedly connected with the closed space in a sealing way, so that the intercepted liquid naturally flows back to the water bath purification system along the surface of the drying liquid-blocking system through self weight, the discharge of liquid bead particles into the air is effectively avoided, and the risk of air pollution is reduced;
the drying liquid-blocking system is sequentially provided with a splash-proof filtering layer, a condensation drying layer and a super-hydrophobic liquid-blocking air-permeable layer from bottom to top, and the pore diameter of the super-hydrophobic liquid-blocking air-permeable layer is 0.1-50 μm or 0.5-10 μm;
the anti-splashing filter layer is mainly composed of a washable primary filter layer, the anti-splashing filter layer can be made of polyurethane foam, metal foam, fine fibers and a polyvinylidene fluoride membrane porous breathable material, airflow filtered by the anti-splashing filter layer enters the condensation drying layer, the condensation drying layer is provided with a passive or active condenser or a filling drying agent, the condensation drying layer is used for intercepting and adsorbing most of liquid bead particles and water vapor tending to saturation in the airflow in a dewing and/or moisture absorption working mode, the airflow passing through the anti-splashing filter layer and the condensation drying layer enters the surface of the super-hydrophobic liquid-resistant breathable layer, the super-hydrophobic liquid-resistant breathable layer can prevent the liquid bead particles from entering the environment, purified clean air and negative ions generated by a system are filtered out, and the self-filtering surface is cleaned in a flowing mode by utilizing the blocked liquid bead particles;
the anti-splashing filter layer, the condensation drying layer and the super-hydrophobic liquid-resistant breathable layer are mutually provided with a communicated liquid collecting flow channel, and the liquid collecting flow channel is communicated with the water bath purification system.
So set up, above-mentioned drying hinders liquid system and still has the high-efficient filtering characteristic to the particle, can further improve the purification rate to biological pollution and physical pollution, through the ventilative impervious characteristic of high efficiency of the ventilative layer of above-mentioned super hydrophobic liquid that hinders, the overflow of liquid in the comprehensive separation system, system reliability and security have been improved, and utilize the scouring action of system mesomorphism liquid stream simultaneously, realize the self-purification function of above-mentioned super hydrophobic liquid that hinders ventilative layer, above-mentioned super hydrophobic liquid that hinders ventilative layer surface easy laying dust inefficacy's inherent problem has effectively been avoided.
Optionally: the water bath purification system is characterized by also comprising a liquid level maintaining system and an intelligent control system, wherein the liquid level maintaining system is provided with a liquid level sensor, a liquid concentration sensor, an electric/manual valve, an electric/manual bidirectional pump, a redundant liquid storage vessel, a water injection pipeline, a water pumping pipeline, concentrated purified liquid and a microcontroller;
the intelligent control system is provided with an air particle sensor, a VOCs sensor, a biological pollution sensor, a temperature and humidity sensor, a control panel, a power sensor, a frequency converter and a microcontroller, corresponding parameters are monitored in real time through various sensors, the microcontroller adjusts the frequency converter according to monitoring parameters and set control logic to reduce or increase the power of the fan, the effects of adjusting the air quantity and noise of a terminal according to environmental changes and reducing energy consumption are achieved, and part of parameters can be set through the control panel.
So set up, make things convenient for the staff to monitor the volume and the concentration of above-mentioned purifying liquid, the effectual concentration and the liquid level height of guaranteeing above-mentioned purifying liquid have improved system stability.
In one implementation of this embodiment: also provides a purifying method of the biological pollution preventing air purifying system, which comprises the following steps:
firstly, the external air is primarily filtered through the reusable or disposable primary filter layer, and after larger-size dust objects are filtered, the external air enters the fan and then does work through the fan to form a unidirectional air flow with certain pressure and kinetic energy and enters the air pipe;
secondly, the air pipe guides the pressurized air flow to enter the air inlet in the flow baffle in a direction perpendicular to or at a certain angle with the liquid level of the purification liquid, when the air flow flows out from the air outlet at a high speed, the air flow is dispersed and crushed by the disperser, so that the air flow and the purification liquid are mixed into a gas-liquid two-phase flow, in the process, the gas-liquid two-phase flow is transversely diffused below the liquid level in a direction parallel to or at a certain angle with the liquid level through the gas passage between the flow baffle and the conical diversion cover, the retention time of the dispersed gas-liquid two-phase flow below the liquid level is prolonged, the gas-liquid mixing efficiency is improved, when the gas-liquid two-phase flow in each direction in the water bath purification system cavity moves at a high speed, the gas-liquid two-phase flow continuously and circularly collides with each other to generate a large amount of water droplet particles and negative ions, and harmful substances such as dust particles, VOCs, formaldehyde, bacteria, viruses and the like in the air are captured and retained in the solution under the large-area and all-directional adsorption action of the continuous liquid phase flow, so as to realize full contact and full absorption;
thirdly, the air flow purified by the water bath dispersing system flows to the drying liquid-blocking system under the action of larger air pressure of the closed space, large-size liquid beads with larger kinetic energy carried in the air flow conveyed by the water bath purifying system are blocked by the anti-splashing filter layer, a part of small liquid bead particles in the air flow are intercepted, and the small liquid bead particles are conveyed back to the water bath purifying system through the liquid collecting flow channel;
and finally, the airflow filtered by the anti-splashing filter layer enters the condensation drying layer, the condensation drying layer intercepts and adsorbs most of the remaining liquid bead particles and water vapor tending to saturation in a dewing and moisture absorption working mode, the airflow passing through the anti-splashing filter layer and the condensation drying layer enters the surface of the super-hydrophobic liquid-resistant breathable layer, and the airflow filtered by the super-hydrophobic liquid-resistant breathable layer is discharged into the air.
In summary, the air purification system and the air purification method for preventing biological pollution disclosed by the invention have the beneficial effects of small wind resistance, easiness in air dispersion, high energy efficiency ratio (wind volume/power), high purification efficiency, difficulty in bringing microorganisms into the environment and high sterilization efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an air purification system for preventing biological contamination according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall operation of the system in the embodiment of the present invention;
FIG. 3 is a schematic view of the operation of the air supply system of the present invention;
FIG. 4 is a schematic view of the operation of the water bath purification system of the present invention;
FIG. 5 is a schematic view of the working principle of the drying and liquid-blocking system of the present invention.
An icon: 1-air supply system, 2-water bath purification system, 3-dry liquid resistance system, 4-closed space, 5-air pipe, 6-anti-splash filter layer, 7-condensation drying layer, 8-super-hydrophobic liquid resistance breathable layer, 9-fan, 11-primary filter layer, 12-purification liquid, 13-spoiler, 14-disperser, 15-through hole, 16-air outlet, 17-base, 18-conical flow guide cover, 19-gas passage, 20-liquid level maintaining system and 21-intelligent control system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example one
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present embodiment provides a biological pollution prevention air purification system, which includes an air supply system 1, a water bath purification system 2 and a drying liquid-blocking system 3;
the water bath purification system 2 and the drying liquid-blocking system 3 form a water-blocking and ventilating closed space 4, and the air supply system 1, the water bath purification system 2 and the drying liquid-blocking system 3 can be connected or integrated in series according to the requirements of the use environment;
the liquid bead particles generated by the water bath purification system 2 reach the drying liquid-blocking system 3 through the airflow in the closed space 4;
in the same system, at least one or more of the air supply system 1, the water bath purification system 2 and the drying liquid-blocking system 3 are required;
when the air conditioner or the central air circulation system is used as a terminal purifier with an external air source, the air conditioner or the central air circulation system can only comprise the water bath purification system 2 and the drying liquid-blocking system 3 according to the specific situation of the external air source.
The biological pollution prevention air purification system disclosed by the embodiment systematically solves the problems of large resistance and low energy efficiency ratio of the water bath purification system 2 by a series of comprehensive technical means of pressurizing and air supplying by the fan 9, transverse air transmission below the liquid level of the purification liquid 12, discontinuous multi-order dispersion, time delay of the spoiler 13, the drying liquid-blocking system 3 and the like, so that the air flow can still keep a considerable pressure after passing the liquid in the water bath purification system 2, effectively penetrates through the drying liquid-blocking system 3, and realizes self cleaning of all parts of the surface drying liquid-blocking system 3 by utilizing the scouring action of the liquid carried in the air flow;
according to the invention, the air supply system 1, the water bath purification system 2 and the drying liquid blocking system 3 are connected or integrated in series, so that the system meets the market requirements, is safe, reliable and efficient, and has a good purification effect on physical and chemical pollution.
Referring to fig. 1, 2, 3 and 4, the air supply system 1 has an ac or dc fan 9 capable of providing a certain air pressure, the fan 9 is connected in series with the water bath purification system 2 through an air pipe 5 or an air channel, the static pressure of the fan 9 should be greater than or equal to 800Pa, the optimum static pressure of the fan 9 can be 1200 Pa-2500 Pa, and the rated energy efficiency ratio thereof is greater than or equal to 2.5m 3 The flow of the air flowing through the air supply system 1, the water bath purification system 2 and the drying liquid-blocking system 3 can only flow in series, and the condition that the air flow which is not filtered by the water bath purification system 2 is connected with the air flow which is filtered by the water bath purification system 2, so that the influence on the air filtered by the drying liquid-blocking system 3 is further avoidedStream cleanliness.
The air intake department of fan 9 has fixed or detachable repeatedly usable or disposable just imitates filter layer 11, and just imitates filter layer 11 and is arranged in the coarse particle thing of filtering external environment, avoids in it gets into fan 9, sets up just imitate filter layer 11 into repeatedly usable or disposable moreover.
Referring to fig. 1, 2, 3 and 4, the water bath purification system 2 comprises a purified liquid 12, a spoiler 13 and a disperser 14, wherein a flow blocking surface of the spoiler 13 can be a plane type, an inclined type, a wave type or a sawtooth type, and is used for prolonging the residence time of dispersed gas phase flow under the liquid surface, a through hole 15 is formed in the middle of the spoiler 13, the through hole 15 is hermetically connected with the air duct 5, an air outlet 16 is formed in the outer edge of the spoiler 13, when the spoiler 13 is in a working state, the air outlet 16 is positioned below the liquid surface of the purified liquid 12, and when the spoiler 13 is not in the working state, the air outlet 16 is positioned above or below the liquid surface of the purified liquid 12; a conical air guide sleeve 18 is arranged at the air channel axis position of the through hole 15, and an air passage 19 is formed between the conical air guide sleeve 18 and the spoiler 13; the air supply system 1 inputs the air flow into the purified liquid 12 in a direction vertical to the liquid level of the purified liquid 12 or in a certain angle, the air flow is transversely dispersed in a direction parallel to the liquid level or in a certain angle through an air passage 19 on a conical flow guide cover 18, a plurality of holes/grooves structures are arranged in the whole air passage 19 of a disperser 14, and the air flow is crushed by the disperser 14 and mixed into the purified liquid 12; the plane of the spoiler 13 can be completely parallel to the liquid level of the purified liquid 12, or form a forward or reverse included angle smaller than 90 degrees with the liquid level, discontinuous dispersion is carried out on the airflow by the disperser 14, the loss of the airflow in the dispersion process is greatly reduced, the setting of the spoiler 13 can effectively prevent the airflow at the air outlet from floating upwards, the airflow is guided by the spoiler 13 and transversely moves in the direction parallel to the liquid level or forming a certain angle with the liquid level under the liquid level, the defect that the mixing time of the airflow and the liquid is insufficient due to shallow liquid level setting of the purified liquid 12 is avoided, the gas-liquid mixing time can be arbitrarily prolonged according to requirements, the loss of the water passing air volume of the system is less than or equal to 20 percent through the application of the disperser 14, and the water passing air pressure is kept to be more than or equal to 200Pa;
the air flow and liquid mixture in each direction in the water bath purification system 2 continuously and circularly collide with each other in the high-speed movement process to generate a large amount of water droplet particles and negative ions, and harmful substances such as dust particles, VOCs, formaldehyde, bacteria, viruses and the like in the air are captured and resided in the solution under the large-area and omnibearing adsorption action of the continuous liquid phase flow, the dispersed liquid phase flow, the liquid droplet particles and the negative ions, so that the purification work of pollutants is completed.
The water and wind pressure retention of the disperser 14 is more than 200pa;
under the condition of not working, the pressure intensity generated by the designed water level depth of the air outlet 16 is not more than the rated air pressure of the fan 9, the designed water level depth of the air outlet 16 can be set to be in the range of 0cm to 6cm below the liquid level of the purified liquid 12, or in the range of 1cm to 2cm below the liquid level, and the optimal water level is set to be in the range of 0cm to 2cm below the liquid level, so that the water pressure of the air outlet 16 is smaller than the rated air pressure of the fan 9, the fan 9 can press air flow into the purified liquid 12, the air flow is filtered and then is discharged to the closed space 4 from the air outlet 16, and the secondary filtration of the drying liquid blocking system 3 is facilitated.
The purifying liquid 12 is provided with polyurethane foam, active carbon particles and zeolite powder porous solid materials which are in a sheet shape, a block shape or a spherical shape and are immersed in the purifying liquid 12, so that gas phase flow is further dispersed, the contact area is increased, the fluctuation range of the liquid level is reduced, the gas flow in the cavity is balanced, and the vibration and the noise of the system are reduced.
The purifying liquid 12 has long-acting, safe and reproducible effects, and the broad-spectrum sterilization and virus killing purifying liquid 12;
the purification liquid 12 components include, but are not limited to: water, glycerol, fatty alcohols, fatty polyols, fatty ketones, vegetable oils, animal fats, polyethylene glycols and silicone oils, and optionally comprising one or more additives independently selected from the group consisting of: alkali metal salts, polyethylene glycols, lysozyme, sodium bisulfite, carbon black, reducing sugars, vitamin C, zinc oxide, silver nitrate, mineral acids, sodium bicarbonate, sodium hydroxide, bleaches, quaternary ammonium salts, glycerin, hydrogels, hydrosols, superabsorbents, EDTA, silica gels, alumina, water-absorbing clays, organic polymers, starches, amino acids, cyclodextran, C1-C6 mono-, di-or trialkylamines, polymeric amines, detergents, bactericides, organic scavengers, fragrances, air fresheners, microorganisms capable of degrading pollutants, detergents, ammonia, disinfectants, aquatic plants, rare earth metal catalysts, and bactericides.
Referring to fig. 1, 2, 3 and 4, the drying and liquid-blocking system 3 is horizontally or angularly installed with the horizontal plane of the purified liquid 12 within a range of 0-89 ° or 30-60 °, and the outer periphery of the drying and liquid-blocking system 3 is fixedly connected with the closed space 4 in a sealing manner, so that the intercepted liquid naturally flows back to the water bath purification system 2 along the surface of the drying and liquid-blocking system 3 by self weight, thereby effectively avoiding the discharge of liquid bead particles into the air and reducing the risk of air pollution; the drying liquid-blocking system 3 is sequentially provided with an anti-splashing filter layer 6, a condensation drying layer 7 and a super-hydrophobic liquid-blocking air-permeable layer 8 from bottom to top, and the pore diameter of the super-hydrophobic liquid-blocking air-permeable layer 8 is 0.1-50 μm or 0.5-10 μm;
the anti-splashing filter layer 6 is mainly composed of a washable primary filter layer 11, the anti-splashing filter layer 6 can be made of polyurethane foam, metal foam, fine fibers and a polyvinylidene fluoride film porous breathable material, airflow filtered by the anti-splashing filter layer 6 enters the condensation drying layer 7, the condensation drying layer 7 is provided with a passive or active condenser or a filling drying agent, the condensation drying layer 7 is used for intercepting and adsorbing most of remaining liquid bead particles and water vapor tending to saturation in the airflow in a dewing and/or moisture absorption working mode, the airflow passing through the anti-splashing filter layer 6 and the condensation drying layer 7 enters the surface of the super-hydrophobic liquid-blocking breathable layer 8, the super-hydrophobic liquid-blocking breathable layer 8 can block liquid bead particles from entering the environment, purified clean air and negative ions generated by a system are filtered, and the self-filtering surface is cleaned by using the blocked liquid bead particles;
the anti-splash filter layer 6, the condensation drying layer 7 and the super-hydrophobic liquid-resistant breathable layer 8 are mutually communicated with a liquid collection flow channel, the liquid collection flow channel is communicated with the water bath purification system 2, the drying liquid-resistant system 3 also has a medium-high efficiency filtering characteristic for particles, the purification rate for biological pollution and physical pollution can be further improved, the overflow of liquid in the system is comprehensively blocked through the high-efficiency air-permeable and liquid-impermeable characteristic of the super-hydrophobic liquid-resistant breathable layer 8, the reliability and the safety of the system are improved, and meanwhile, the scouring effect of liquid phase flow in the system is utilized, the self-purification function of the super-hydrophobic liquid-resistant breathable layer 8 is realized, and the inherent problem that the surface of the super-hydrophobic liquid-resistant breathable layer 8 is easy to accumulate dust and lose efficacy is effectively avoided.
Referring to fig. 1, 2, 3 and 4, the system further comprises a liquid level maintaining system 20 and an intelligent control system 21, wherein the liquid level maintaining system 20 is provided with a liquid level sensor, a liquid concentration sensor, an electric/manual valve, an electric/manual bidirectional pump, a redundant liquid storage vessel, a water injection pipeline, a water pumping pipeline, a concentrated purified liquid 12 and a microcontroller, the liquid level height of the purified liquid 12 in the water bath purification system 2 and the concentration of the purified liquid 12 in the liquid are detected in real time through the liquid level sensor and the liquid concentration sensor, monitoring data are transmitted to the microcontroller, the microcontroller compares and judges with a standard value, the valve and the pump are controlled according to a judgment result to perform water replenishing, water pumping and purified liquid 12 replenishing actions, and meanwhile, an early warning prompt can be provided to perform manual liquid replenishing;
the intelligent control system 21 is provided with an air particle sensor, a VOCs sensor, a biological pollution sensor, a temperature and humidity sensor, a control panel, a power sensor, a frequency converter and a microcontroller, corresponding parameters are monitored in real time through various sensors, the microcontroller adjusts the frequency converter according to monitoring parameters and established control logic, the power of the fan 9 is reduced or increased, the air quantity of a terminal is adjusted according to environmental changes, noise is reduced, energy consumption is reduced, partial parameters can be set through the control panel, the quantity and the concentration of the purified liquid 12 can be conveniently monitored by workers, the concentration and the liquid level height of the purified liquid 12 are effectively guaranteed, and the system stability is improved.
The working principle of the biological pollution prevention air purification system is that the arrow direction in the figure is the air flow moving direction, the water bath purification system 2 comprehensively utilizes the purification performance of liquid phase to gas phase impurities in gas-liquid two-phase flow, and the system is designed: the combined action of the whole structure design, the specially required fan 9, the multifunctional and efficient purifying liquid 12 and the efficient disperser 14 realizes the comprehensive capture, purification and killing of dust particles, VOCs, formaldehyde, bacteria and viruses in polluted air at one time under the condition of higher energy efficiency ratio, and fundamentally solves the possibility of secondary diffusion of harmful organism pollution;
the drying liquid-blocking system 3 comprehensively blocks the overflow of liquid in the system through the efficient air-permeable and liquid-impermeable characteristics of the super-hydrophobic liquid-blocking and air-permeable layer 8, and simultaneously realizes the self-purification function of the super-hydrophobic liquid-blocking and air-permeable layer 8 by utilizing the scouring action of liquid phase flow in the system, thereby fundamentally solving the inherent defects of secondary pollution caused by easy dust deposition on the filtering surface of the super-hydrophobic liquid-blocking and air-permeable layer 8 and perfectly solving various problems of the existing products and technologies.
In the embodiment, through systematic structural design, the functional modules are integrated, the air channel structure is optimized, the wind resistance coefficient is reduced, unnecessary air volume loss in each link is avoided, and the energy efficiency ratio of the system is not lower than 2.0m on the premise of ensuring that the biological pollution purification effect reaches 99.99 percent 3 Practical requirements of/w.h;
in this embodiment, a large number of tests prove that the booster fan 9 with appropriate air pressure is selected and allocated. Preferably, the energy efficiency ratio of the fan 9 is more than or equal to 2.5m 3 The wind pressure is more than or equal to 800Pa, and the air flow with certain potential energy can be provided for the system on the premise of ensuring the energy efficiency ratio of the system so as to better overcome the liquid resistance and the 14 resistance of the disperser;
in the embodiment, the gas is transversely conveyed below the liquid level, so that the liquid level depth required by gas dispersion is reduced, the water pressure resistance is reduced, the gas outlet area is enlarged, the overflow gas is ensured to still have enough air pressure for penetrating and drying the liquid blocking system 33, the overflow air volume loss is less than or equal to 20 percent, and the overflow air pressure is more than or equal to 200Pa; by arranging the discontinuous multi-stage disperser 14, the effective airflow dispersion under the conditions of shallow liquid level and small wind resistance is realized, and the dispersed airflow is fully mixed with the liquid; the flow blocking plate 13 with a certain width and area is used for prolonging the stroke and time of the dispersed gas under the liquid surface, and the purification efficiency is improved on the premise of not obviously increasing the energy consumption, and the purification efficiency is more than or equal to 98 percent according to the test.
In this embodiment, the disperser 14 may be a porous mesh membrane or an annular dispersing column, and the distribution of the annular dispersing column may be staggered, wavy, zigzag, or spiral.
In this embodiment, the multifunctional and efficient purifying solution 12 passes a large number of verification tests, selects a long-acting, safe and reproducible efficient purifying solvent, can sterilize and kill viruses in a broad spectrum, precipitates and decomposes dust and toxic and harmful substances, and has no peculiar smell and harmful substances in the whole purifying process.
In the embodiment, through a large number of material verifications, a super-hydrophobic liquid-resistant and air-permeable layer 8 (the pore diameter of which can be selected within a range of 0.5-10 μm) is preferably selected as a liquid-resistant drying layer after being subjected to air flow and water passing, the super-hydrophobic liquid-resistant and air-permeable layer 8 has a super-hydrophobic characteristic, micropores are uniformly distributed on the surface, air can be effectively permeated under the condition that the air volume is not remarkably reduced, a large amount of liquid bead particles generated after water bath purification can be effectively prevented from being scattered and overflowing into the air, in addition, the super-hydrophobic liquid-resistant and air-permeable layer 8 also has a medium-high-efficiency filtering characteristic on the particles, and the purification rate on biological pollution and physical pollution can be further improved.
Example two
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, in combination with the content of the first embodiment, a purifying method of an air purifying system for preventing biological pollution is provided in the present embodiment:
firstly, the external air is primarily filtered through a reusable or disposable primary filter layer 11, after larger-size dust is filtered, the external air enters a fan 9, and then the fan 9 applies work to form unidirectional airflow with certain pressure and kinetic energy to enter an air pipe 5;
secondly, the air pipe 5 guides the pressurized air flow to enter an air inlet in the flow baffle 13 in a direction vertical to or at a certain angle with the liquid level of the purified liquid 12, when the air flow flows out from the air outlet 16 at a high speed, the air flow is dispersed and crushed by the disperser 14, so that the air flow and the purified liquid 12 are mixed into a gas-liquid two-phase flow, then the gas-liquid two-phase flow passes through the gas passage 19 between the flow baffle 13 and the conical diversion cover 18, so that the gas-liquid two-phase flow is transversely diffused to the periphery under the liquid level in a direction parallel to the liquid level or at a certain angle with the liquid level, the retention time of the dispersed gas-liquid two-phase flow under the liquid level is prolonged, the gas-liquid mixing efficiency is improved, when the gas-liquid two-phase flow in each direction in the cavity of the water bath purification system 2 is in a high-speed movement process, the gas-liquid two-phase flow continuously and circularly collides with each other to generate a large amount of water droplet particles and negative ions, and harmful substances such as dust particles, VOCs, formaldehyde, bacteria, viruses and the like in the air are all trapped and retained in the solution, so as to realize full contact and full absorption;
thirdly, the air flow purified by the water bath dispersing system flows to the drying liquid-blocking system 3 under the air pressure action of the larger closed space 4, large-size liquid beads with larger kinetic energy carried in the air flow conveyed by the water bath purifying system 2 are blocked by the anti-splashing filter layer 6, part of small liquid bead particles in the air flow are intercepted, and the small liquid bead particles are conveyed back to the water bath purifying system 2 through the liquid collecting runner;
and finally, the airflow filtered by the anti-splashing filter layer 6 enters the condensation drying layer 7, the condensation drying layer 7 intercepts and adsorbs most of the remaining liquid bead particles and water vapor tending to saturation in a dewing and moisture absorption working mode, the airflow passing through the anti-splashing filter layer 6 and the condensation drying layer 7 enters the surface of the super-hydrophobic liquid-resistant breathable layer 8, and the airflow filtered by the super-hydrophobic liquid-resistant breathable layer 8 is discharged into the air.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, in combination with the first embodiment and the second embodiment, in order to verify the foregoing parameters and achieved technical effects, the following experiments are performed:
experiment one: high-efficiency purification of biological pollution, and the purification rate reaches 99.99 percent.
The physical, chemical and biological pollution in the air is captured and stayed in the purifying liquid 12 under the large-area and omnibearing adsorption action of continuous liquid phase flow, dispersed liquid phase flow, liquid bead particles and negative ions generated in the water bath purifying system 2, wherein the physical pollution such as dust particles is absorbed, wrapped and settled by the liquid in the purifying liquid 12, the chemical pollution such as VOCs, formaldehyde and the like is neutralized and decomposed by the purifying liquid 12 or water, and the biological pollution such as bacteria, viruses and the like is killed by a sterilizing agent in the purifying liquid 12, so that the one-time comprehensive purification work of three main pollutants is simultaneously completed, the high-efficiency purification of full contact and full absorption is realized, and the purification rate of the biological pollution reaches 99.99%.
According to the relevant national standards: GB/T18801-2015 air purifier, GB 21551.1-2008 general rules for antibiosis, degerming and purification functions of household and similar electric appliances, GB 21551.3-2010 special requirements for antibiosis, degerming and purification functions of household and similar electric appliances, GB/T16293-2010 test method for planktonic bacteria in clean rooms (areas) in the pharmaceutical industry, a sterilization and purification test is carried out on an implementation prototype, and test schemes and test results are as follows.
The test model was established as follows:
Figure BDA0003818381470000161
the test is divided into a blank group, a comparison group and a test group, wherein the blank group is not introduced with a purifier, the comparison group purifier is a commercially available household air purifier, and the test group is five sample machines of the invention. The main performance parameters of the embodiment are shown in the following table 1:
TABLE 1 Performance parameters of five implementation prototypes
Figure BDA0003818381470000162
The results of the tests performed on the dishes seventy-two hours after the bacterial culture are shown in table 2 below:
table 2 comparative testing of sterilization performance of prototype
Figure BDA0003818381470000163
Note: the group of example 2 (continuous operation 500 h) in table 2 is the durability test group of example 2, and from the test results, each performance is not significantly different from the initial state, and the durability of the system is preliminarily verified. The implementation 2 (no drying liquid-blocking system) group cancels the state of the drying liquid-blocking system 3 for the implementation 2, and the sterilization performance still can reach 98.35 percent, which shows that the single water bath purification system 2 also has good biological pollution prevention effect.
Experiment two: high efficiency in purifying physical pollution, and PM0.3 purifying rate up to over 99%.
By utilizing the adsorption characteristic of the liquid to dust particles and the surface separation and filtration performance of the super-hydrophobic liquid-blocking air-permeable layer 8, the system has excellent biological pollution purification efficiency and also has better purification efficiency to physical pollution. Reference to national relevant standards: GB/T18801-2015 air purifier, to the implementation model in Table 1, the dust particle purification test, test scheme and test results as follows.
The test model was established as follows:
Figure BDA0003818381470000171
and measuring the number of the particulate matters in unit volume in the test environment and the number of the particulate matters in unit volume in the air filtered by the purification system through an air dust particle counter, and calculating a ratio to determine the air physical pollution purification efficiency of each implementation machine. The test is divided into a blank group, a comparison group and a test group, wherein the blank group is test data of polluted air in the environment, the comparison group purifier is a commercially available household air purifier, and the test group is five implementation model purifiers of the invention.
The test results are shown in table 3 below:
TABLE 3 air particle purification test (Unit: one/L)
Figure BDA0003818381470000172
Experiment three: the wind pressure and the wind resistance of each link are optimally designed, and the overall energy efficiency ratio of the system can reach 2.0m 3 /w·h。
(1) Air supply system 1: in order to ensure that the input airflow can be pressed into the liquid surface of the purifying liquid 12 to a certain depth and can effectively pass through the dispersers 14, the anti-splashing filtering layer 6, the condensation drying layer 7, the super-hydrophobic liquid-resistant breathable layer 8 and other links, the air supply system 1 needs to adopt a medium-high pressure fan 9 capable of improving the air pressure, and the fanThe static pressure of 9 is more than or equal to 800Pa, and the rated energy efficiency ratio is more than or equal to 2.5m 3 /w·h；
(2) Water bath purification system 2: in order to ensure that the air flow is effectively dispersed and crushed under the liquid level of the purifying liquid 12 and still has the air volume and the air pressure meeting the terminal requirements of the system, the pressure generated by the designed water level depth of the disperser 14 in the water bath purifying system 2 is not more than the rated air pressure of the fan 9. Preferably, the water level depth may be set to a range of 0cm to 6cm below the liquid surface of the purified liquid 12 or a range of 1cm above the liquid surface to 2cm below the liquid surface of the purified liquid 12 in the non-operating condition, and more preferably, may be set to a range of 0cm to 2 cm.
In addition, through the horizontal air supply design of deconcentrator 14, effectively reduced water resistance, its water air loss of crossing is not more than 20% of the rated amount of wind of fan 9, and it remains to cross the water wind pressure and is greater than 200pa.
(3) Drying the liquid blocking system 3: in order to ensure the air output of the terminal, the total air loss of the drying and liquid-blocking system 3 is less than or equal to 15 percent. The splash-proof filtering layer 6 is made of a primary-effect filtering material which can be washed by water, the condensing and drying layer 7 is designed in a manner of reducing windward side and streamline, and the super-hydrophobic liquid-blocking and air-permeable layer 8 can be made of a microporous super-hydrophobic film (such as polyvinylidene fluoride and the like) with the pore diameter of 0.5-10 mu m.
Reference to national relevant standards: GB/T18801-2015 air purifier, to the implementation model machine in Table 1, air output and water passing wind pressure test, the test scheme and test results are as follows.
The test model was established as follows:
Figure BDA0003818381470000181
in the test experiment, the air quantity at the air outlet of the purifier is measured by using a flowmeter, and the pressure value in the cavity of the closed space 4 formed by the water bath purification system 2 and the drying liquid resistance system 3 is measured by using a barometer. The test results are shown in table 4 below:
table 4 test of air quantity and air pressure of sample machine
Figure BDA0003818381470000182
Figure BDA0003818381470000191
Experiment four: effectively prevent the purifying liquid 12 and the liquid from dissipating, reduce the consumption of consumables, obstruct the pollution of pipelines and reliably ensure the use safety.
The drying liquid-blocking system 3 has the content volatilization amount less than or equal to 0.1mg/m through the combined action of the anti-splashing filter layer 6, the condensation drying layer 7 and the super-hydrophobic liquid-blocking air-permeable layer 8 3 The increment of the absolute humidity of the environment is less than or equal to 5 percent, and the liquid bead particles formed in the system are effectively prevented from dissipating to the environment, so that the use safety is ensured, and the indoor environment humidity is in a proper range. And when the device is used as a terminal of a central circulation system, the device can effectively block pipeline pollution and avoid secondary pollution diffusion caused by dust accumulation in the pipeline.
The content volatilization amount was measured for five sample machines of the present invention. In order to facilitate detection, the purifying agent in the purifying liquid 12 is replaced by sodium chloride, the concentration of the solution is properly increased, the simulation test of the volatilization amount of the system purifying agent (sodium chloride replacement) is carried out according to the standard GB/T1266-2006 chemical reagent sodium chloride, and the test scheme and the test result are as follows.
The test method comprises the following steps:
(1) Taking the amount of purified water required by the normal work of a purification system, and uniformly mixing the purified water with NaCl according to a certain proportion;
(2) After sampling and retaining the mixed solution, injecting 5L of the mixed solution into a water bath purification system 2;
(3) Starting a purification system to continuously work, quantitatively supplementing purified water in real time according to the evaporation capacity, and recording;
(4) Repeating the steps until the evaporation capacity of the purification system is 4 times of the initial injection water capacity, and closing the purification system;
(5) The remaining solution in the water bath purification system 2 was removed, and the concentration of the solution was measured and compared with the initial sample.
The lysozyme is an edible sterilizing agent, and volatilization of the lysozyme does not cause negative influence, so the lysozyme sterilization group is not tested. The test objects are the test objects of the implementation 2, 3 and 5 in the table 1, and the test objects of the implementation 2 (continuous operation for 500 h) endurance test group and the implementation 2 (no drying liquid-resisting system 3) test group, and the test results are shown in the following table 5:
table 5 content volatilization test for sample machine
Figure BDA0003818381470000201
As can be seen from the test results, the volatilization of NaCl per cubic meter of gas was 0.1mg/m in the four test groups with the complete system 3 Hereinafter, it is considered that the elution amount was extremely low or almost no elution, and the volatilization amount of the test group without the dry resist system 3 reached 1.175mg/m 3 . This shows that the dry liquid barrier system 3 of the present invention has excellent capability of controlling the overflow of the content.
On the other hand, the purifying antibacterial components adopted by the invention are relatively safe, and the concentration of the purifying liquid 12 is controlled within the range of less than or equal to 1-2 per mill, so that the volatilization amount of the system contents is extremely small, the consumption amount of the purifying agent is small, and the safety coefficient is high.
Experiment five: biological, chemical and physical dust pollution is comprehensively and efficiently purified at one time, step-by-step links are avoided, and spatial dead angles beneficial to growth of biological pollution are avoided.
The purification process of this scheme is in an integrated closed space 4, and the gas-liquid two-phase flow and the high density water smoke of subsidiary germicide through dynamic cycle's mode, under the diffusion effect, are full of whole space naturally, and the absorption and the sterilization function of dust, VOCs, formaldehyde, bacterium, virus are all accomplished simultaneously, do not have the physical space separation between the purification performance, do not purify the dead angle, once only synthesize and accomplish all purification performance, avoid the risk that traditional technique exists comprehensively.
Experiment six: the high-density water mist formed by the high-speed gas-liquid two-phase flow in the system has a scouring effect on the super-hydrophobic liquid-resistant breathable layer 8, so that the self-cleaning function of the system is realized, and the service life of the system is greatly prolonged.
Different from the conventional filtering material which utilizes the overlapping of a plurality of layers of thin fibers with certain thickness and a filtering mode of absorbing dust in the air through Van der Waals force, the super-hydrophobic liquid-resistant air-permeable layer 8 in the system mainly comprises a super-hydrophobic micro-porous filtering membrane, and the surface filtering is carried out through the super-hydrophobic characteristic of the material and the micro-pores with high density and uniform distribution. Thus, contaminants are only blocked from the surface of the filter layer and do not penetrate into the filter layer, but when the surface contaminants accumulate to a certain extent, they cause the pores to become clogged, and their performance to deteriorate or even end-of-life.
Therefore, aiming at the characteristic of the surface blocking function of the super-hydrophobic liquid-resistant breathable layer 8, the high-density water mist generated in the dynamic circulation process of the purifying liquid 12 in the inner space is utilized to form a liquid flushing effect on the inner surface of the super-hydrophobic liquid-resistant breathable layer 8, the self-cleaning effect on the water-resistant layer is realized, and the inherent defects that secondary pollution is caused by easy dust accumulation due to the surface filtering membrane of the super-hydrophobic liquid-resistant breathable layer 8 are fundamentally overcome.
Experiment seven: the purifying liquid 12 has long-acting, safe and reproducible effects, can sterilize and kill viruses in a broad spectrum, can precipitate and decompose dust and toxic and harmful substances, and has no peculiar smell and harmful substances in the whole purifying process.
The conventional air purifier is generally sterilized by high voltage static electricity, ultraviolet irradiation or photocatalyst. Among them, high voltage static electricity has the problem of generating ozone, ultraviolet irradiation has the problems of attenuation and non-transmission, and the efficiency of photocatalyst is too low.
In the scheme, the pollutants are adsorbed by the purifying liquid 12 in the filtering process, the physical pollutants are contained and settled by the liquid immediately after meeting water, the chemical pollutants are neutralized or decomposed, the biological pollutants are killed, and all the pollutants are subjected to harmless treatment, so that the possibility of secondary diffusion of the pollutants is fundamentally blocked.
Experiment eight: the waterfall effect generates a large amount of negative ions, which is beneficial to the settlement of environmental pollutants and is beneficial to the health of human bodies.
It is known that in nature, the force of typhoon or heavy rain forces rain drops to repeatedly collide with each other, so as to generate a large amount of ultra-infinitesimal water particles and negative ions covering a large area as the water drops are further split and broken, thereby completely purifying the atmosphere, and this natural law is often called "typhoon effect". In the scheme, high-pressure air in the outside passes through the water bath purification system 2 and forms high-speed dynamic circulating gas-liquid two-phase flow with the purification liquid 12, the air flow and the water flow are overlapped and collided with each other, the micro typhoon effect is highly reduced in the system, and negative ions generated by the micro typhoon effect are mixed with clean air and conveyed to the external space through the super-hydrophobic liquid-resistant breathable layer 8, so that the overall purification of the environment is further realized.
Experiment nine: the system can be provided with a liquid level keeping system 20 and an intelligent control system 21, so that the liquid level is effectively guaranteed to be constant, the reliability of the system is guaranteed, the purification degree and the air volume can be adjusted in real time according to environmental changes, and the system is energy-saving and environment-friendly.
The intelligent air pollution control system fully utilizes mature various sensors and microprocessor control technologies, carries out real-time monitoring on parameters such as the internal and external air pollution concentration, the temperature, the humidity, the air volume, the liquid level and the like, and carries out intelligent adjustment according to a set program.
Experiment ten: compared with the conventional filter, the water solution is used for adsorption and purification, the dirt holding capacity is obviously improved, the service life is long, and the material cost is low.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a prevent biological pollution air purification system which characterized in that:
comprises an air supply system, a water bath purification system and a drying liquid-blocking system;
the water bath purification system and the drying liquid-blocking system form a water-blocking and ventilating closed space, and the air supply system, the water bath purification system and the drying liquid-blocking system can be connected in series or integrated according to the requirements of the use environment;
liquid bead particles generated by the water bath purification system reach the drying liquid-blocking system through air flow in the closed space;
at least one or more of the air supply system, the water bath purification system and the drying liquid-blocking system are required to be arranged in the same system;
when the terminal purifier is used as an air conditioner or a central air circulation system and is provided with an external air source, the water bath purification system and the drying liquid resistance system can be only included according to the specific condition of the external air source.
2. The air purification system against biological contamination according to claim 1, wherein:
the air supply system is provided with an alternating current or direct current fan capable of providing certain air pressure, the fan is mutually sealed and connected in series with the water bath purification system through an air pipe or an air channel, the static pressure of the fan is more than or equal to 800Pa, the optimal static pressure of the fan can be in the range of 1200 Pa-2500 Pa, and the rated energy efficiency ratio of the fan is more than or equal to 2.5m 3 /w·h。
3. The air purification system against biological contamination according to claim 2, wherein:
the air inlet of the fan is provided with a fixed or detachable reusable or disposable primary filter layer.
4. The air purification system against biological contamination according to claim 2, wherein:
the water bath purification system is provided with purification liquid, a flow blocking plate and a disperser, wherein the flow blocking surface of the flow blocking plate can be in a plane type, an inclined type, a wave type or a sawtooth type and is used for prolonging the retention time of dispersed gas phase flow under the liquid level, the middle part of the flow blocking plate is provided with a through hole, the through hole is mutually and hermetically connected with an air pipe, the outer edge of the flow blocking plate is provided with an air outlet, when the flow blocking plate is in a working state, the air outlet is positioned below the liquid level of the purification liquid, and when the flow blocking plate is in a non-working state, the air outlet is positioned above or below the liquid level of the purification liquid;
a conical air guide sleeve is arranged at the axis position of the air duct of the through hole, and an air passage is formed between the conical air guide sleeve and the spoiler;
the air supply system inputs airflow into the purification liquid in a direction vertical to the liquid level of the purification liquid or in a certain angle, the airflow is transversely dispersed in a direction parallel to the liquid level or in a certain angle through the air passage on the conical guide cover, a plurality of holes/grooves structures are arranged in the whole air passage of the disperser, and the airflow is crushed and mixed into the purification liquid through the disperser;
the plane of the flow blocking plate can be completely parallel to the liquid level of the purifying liquid, or form a forward or reverse included angle smaller than 90 degrees with the liquid level.
5. The anti-biofouling air purification system of claim 4, wherein:
the water and air pressure retention of the disperser is more than 200pa;
under the condition of not working, the pressure intensity generated by the designed water level depth of the air outlet is not more than the rated wind pressure of the fan, the designed water level depth of the air outlet can be set to be in the range of 0cm to 6cm below the liquid level of the purifying liquid or in the range of 1cm above the liquid level to 2cm below the liquid level, and the optimal range is set to be in the range of 0cm to 2cm below the liquid level.
6. The anti-biofouling air purification system of claim 4, wherein:
the purifying liquid is immersed in a flaky, blocky or spherical solid material containing polyurethane foam, activated carbon particles and zeolite powder, so that gas phase flow is further dispersed, the contact area is increased, the fluctuation range of the liquid level is reduced, the gas flow in the cavity is balanced, and the vibration and noise of the system are reduced.
7. The anti-biofouling air purification system of claim 4, wherein:
the purifying liquid has long-acting, safe, reproducible and broad-spectrum sterilization and virus killing effects;
the purification liquid components include but are not limited to: water, glycerol, fatty alcohols, fatty polyols, fatty ketones, vegetable oils, animal fats, polyethylene glycols and silicone oils, and optionally comprising one or more additives independently selected from the group consisting of: alkali metal salts, polyethylene glycols, lysozyme, sodium bisulfite, carbon black, reducing sugars, vitamin C, zinc oxide, silver nitrate, mineral acids, sodium bicarbonate, sodium hydroxide, bleaches, quaternary ammonium salts, glycerin, hydrogels, hydrosols, superabsorbents, EDTA, silica gels, alumina, water-absorbing clays, organic polymers, starches, amino acids, cyclodextran, C1-C6 mono-, di-or trialkylamines, polymeric amines, detergents, bactericides, organic scavengers, fragrances, air fresheners, microorganisms capable of degrading pollutants, detergents, ammonia, disinfectants, aquatic plants, rare earth metal catalysts, and bactericides.
8. The anti-biofouling air purification system of claim 4, wherein:
the drying liquid-blocking system and the purified liquid horizontal plane are arranged in a certain angle or horizontal mode, the installation range of the drying liquid-blocking system and the purified liquid horizontal plane is 0-89 degrees or 30-60 degrees, and the outer periphery of the drying liquid-blocking system is fixedly connected with the closed space in a sealing mode;
the drying liquid-blocking system is sequentially provided with a splash-proof filtering layer, a condensation drying layer and a super-hydrophobic liquid-blocking breathable layer from bottom to top, and the pore diameter of the super-hydrophobic liquid-blocking breathable layer is 0.1-50 μm or 0.5-10 μm;
the anti-splashing filter layer is mainly composed of a washable primary filter layer, the anti-splashing filter layer can be made of polyurethane foam, metal foam, fine fibers and a polyvinylidene fluoride membrane porous breathable material, airflow filtered by the anti-splashing filter layer enters the condensation drying layer, the condensation drying layer is provided with a passive or active condenser or a filling desiccant, the condensation drying layer is in a dewing and/or moisture absorption working mode to intercept and adsorb most of remaining liquid bead particles and water vapor tending to saturation in the airflow, the airflow passing through the anti-splashing filter layer and the condensation drying layer enters the surface of the super-hydrophobic liquid-blocking breathable layer, the super-hydrophobic liquid-blocking breathable layer can block liquid bead particles from entering the environment, purified clean air and negative ions generated by a system are filtered, and the blocked liquid bead particles are utilized to flow and clean the self-filtering surface;
and the anti-splashing filter layer, the condensation drying layer and the super-hydrophobic liquid-resistant breathable layer are mutually provided with communicated liquid collecting runners, and the liquid collecting runners are communicated with the water bath purification system.
9. The air purification system against biological contamination according to claim 1, wherein:
the intelligent water-bath purification system comprises a water-bath purification system, a liquid level maintaining system and an intelligent control system, wherein the liquid level maintaining system is provided with a liquid level sensor, a liquid concentration sensor, an electric/manual valve, an electric/manual bidirectional pump, a redundant liquid storage vessel, a water injection pipeline, a water pumping pipeline, concentrated purification liquid and a microcontroller;
the intelligent control system is provided with an air particle sensor, a VOCs sensor, a biological pollution sensor, a temperature and humidity sensor, a control panel, a power sensor, a frequency converter and a microcontroller, corresponding parameters are monitored in real time through various sensors, the microcontroller adjusts the frequency converter according to monitoring parameters and set control logic, the power of the fan is reduced or increased, the effects of adjusting the air quantity and noise of a terminal according to environmental changes and reducing energy consumption are achieved, and part of parameters can be set through the control panel.
10. A purification method using the air purification system against biological contamination according to any one of claims 1 to 9, characterized in that:
firstly, the external air is primarily filtered through the reusable or disposable primary filter layer, and after larger-size dust matters are filtered, the external air enters the fan and does work through the fan to form a unidirectional air flow with certain pressure and kinetic energy and enters the air pipe;
secondly, the air pipe guides the pressurized air flow to enter the air inlet in the flow baffle in a direction perpendicular to or at a certain angle with the liquid level of the purification liquid, when the air flow flows out of the air outlet at a high speed, the air flow is dispersed and crushed by the disperser, so that the air flow and the purification liquid are mixed into a gas-liquid two-phase flow, in the process, the gas-liquid two-phase flow is transversely diffused below the liquid level in a direction parallel to or at a certain angle with the liquid level through the gas passage between the flow baffle and the conical diversion cover, the retention time of the dispersed gas-liquid two-phase flow below the liquid level is prolonged, the gas-liquid mixing efficiency is improved, when the gas-liquid two-phase flow in each direction in the water bath purification system cavity moves at a high speed, the gas-liquid two-phase flow continuously and circularly collides with each other, a large amount of water droplet particles and negative ions are generated, and under the large-area and omnibearing adsorption action of the continuous liquid phase flow, the dispersed liquid phase flow, the liquid droplet particles and the negative ions, harmful substances such as dust particles, VOCs, formaldehyde and bacteria and viruses in the air are captured and retained in the solution, so as to realize full contact and full absorption;
thirdly, the air flow purified by the water bath dispersion system flows to the drying liquid-blocking system under the action of larger air pressure of the closed space, large-size liquid beads with larger kinetic energy carried in the air flow conveyed by the water bath purification system are blocked by the anti-splashing filter layer, part of small liquid bead particles in the air flow are intercepted, and the small liquid bead particles are conveyed back to the water bath purification system through the liquid collecting flow channel;
and finally, the airflow filtered by the anti-splashing filter layer enters the condensation drying layer, the condensation drying layer intercepts and adsorbs most of the remaining liquid bead particles and water vapor tending to saturation in a dewing and moisture absorption working mode, the airflow passing through the anti-splashing filter layer and the condensation drying layer enters the surface of the super-hydrophobic liquid-resistant breathable layer, and the airflow filtered by the super-hydrophobic liquid-resistant breathable layer is discharged into the air.
CN202211033603.2A 2022-08-26 2022-08-26 Air purification system capable of preventing biological pollution and purification method thereof Active CN115388509B (en)

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