WO2024040956A1 - Système de purification d'air anti-pollution biologique et son procédé de purification - Google Patents

Système de purification d'air anti-pollution biologique et son procédé de purification Download PDF

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Publication number
WO2024040956A1
WO2024040956A1 PCT/CN2023/082933 CN2023082933W WO2024040956A1 WO 2024040956 A1 WO2024040956 A1 WO 2024040956A1 CN 2023082933 W CN2023082933 W CN 2023082933W WO 2024040956 A1 WO2024040956 A1 WO 2024040956A1
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Prior art keywords
liquid
air
purification
blocking
water bath
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PCT/CN2023/082933
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English (en)
Chinese (zh)
Inventor
王素兰
谭淋
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成都飞凡微盾生物科技有限公司
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Publication of WO2024040956A1 publication Critical patent/WO2024040956A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to the technical field of air purification, and specifically to an air purification system for preventing biological pollution and a purification method thereof.
  • water bath liquid purification and high-efficiency superhydrophobic membrane surface filtration are two types of biological purification solutions with relatively high efficiency; water bath liquid purification, using the adsorption, encapsulation and dissolution characteristics of liquid, is a This is an ideal comprehensive air purification technology, but it has problems such as large liquid wind resistance, difficulty in air dispersion, low energy efficiency ratio (air volume/power), low purification efficiency, and microorganisms are easily wrapped in water and brought into the environment; high-efficiency super-hydrophobic membrane Filtration, unlike conventional filter materials that use van der Waals forces to absorb dust particles, uses the superhydrophobic properties of its film surface for surface filtration. It has high filtration efficiency, high bacterial blocking rate, and can be cleaned and used repeatedly, but it is also easy to accumulate dust on the surface. Failure, no sterilization function, easy to cause secondary contamination and other problems.
  • the present invention aims to provide an anti-biological pollution air purification system and a purification method thereof to solve the problems in the existing technology such as large wind resistance, difficulty in air dispersion, low energy efficiency ratio (air volume/power), low purification efficiency, and microorganisms easily wrapped in water liquids. It is later brought into the environment and the sterilization efficiency is low or basically ineffective.
  • Embodiments of the present invention provide an air purification system for preventing biological pollution, which includes an air supply system, a water bath purification system and a drying and liquid blocking system;
  • the water bath purification system and the drying and liquid blocking system form a water-blocking and breathable closed space.
  • the air supply system, the water bath purification system and the drying and liquid blocking system can be connected or integrated in series according to the requirements of the use environment. ;
  • the liquid droplets produced by the water bath purification system reach the drying liquid blocking system through the air flow in the closed space;
  • an external air source such as an air conditioner or a central air circulation system
  • it may only include the water bath purification system and the drying and liquid blocking system according to the specific conditions of the external air source.
  • the anti-biopollution air purification system disclosed in this embodiment uses the above-mentioned fan pressurized air supply, the above-mentioned horizontal air delivery under the liquid surface of the above-mentioned purification liquid, intermittent multi-stage dispersion, the above-mentioned baffle plate delay, drying and liquid-blocking system, etc.
  • a series of comprehensive technical means systematically solve the problems of high resistance and low energy efficiency of the water bath purification system, so that the air flow can still maintain a considerable pressure after passing through the liquid in the above water bath purification system, and effectively pass through the above dry liquid blocking system, and Utilize the scouring effect of liquid entrained in the air flow to achieve self-cleaning of each component of the above-mentioned dry liquid blocking system;
  • the invention connects or integrates the air supply system, water bath purification system and drying and liquid blocking system in series, so that it meets the market demand, is safe, reliable and efficient, and also has a good purification effect on physical and chemical pollution.
  • the above-mentioned air supply system has an AC or DC fan that can provide a certain air pressure.
  • the above-mentioned fan is sealed and connected in series with the above-mentioned water bath purification system through an air duct or air duct.
  • the static pressure of the above-mentioned fan The force should be ⁇ 800Pa.
  • the optimal static pressure of the above-mentioned fan can be in the range of 1200Pa ⁇ 2500Pa, and its rated energy efficiency ratio is ⁇ 2.5m 3 /w ⁇ h.
  • Such an arrangement allows the airflow flowing through the air supply system, water bath purification system and drying and liquid blocking system to flow in series, preventing the airflow that has not been filtered by the above water bath purification system from coming into contact with the airflow that has been filtered by the above water bath purification system. This in turn affects the air flow cleanliness filtered by the above-mentioned drying and liquid blocking system.
  • the air inlet of the above-mentioned fan has a fixed or removable primary filter layer that is reusable or disposable.
  • the above-mentioned primary filter layer is used to filter out coarse particles in the external environment to prevent them from entering the fan, and the above-mentioned primary filter layer is configured to be reusable or disposable.
  • the above-mentioned water bath purification system has a purification liquid, a baffle plate and a disperser.
  • the flow-blocking surface of the above-mentioned baffle plate can be a flat type, an inclined type, a wave type, or a sawtooth type, which is used to extend the dispersed gas phase flow in the liquid.
  • the above-mentioned baffle plate has a through hole in the middle, and the above-mentioned through hole and the above-mentioned air duct are sealedly connected to each other.
  • the outer edge of the above-mentioned baffle plate has an air outlet.
  • the above-mentioned baffle plate When the above-mentioned baffle plate is in working condition, the above-mentioned The air outlet is located below the liquid level of the above-mentioned purification liquid. When the above-mentioned baffle is in a non-working state, the above-mentioned air outlet is located above or below the liquid level of the above-mentioned purification liquid;
  • a conical deflector is provided at the axis of the air duct of the through hole, and a gas passage is formed between the conical deflector and the baffle;
  • the above-mentioned air supply system inputs the air flow into the above-mentioned purification liquid perpendicularly or at a certain angle to the liquid surface of the above-mentioned purification liquid.
  • the air flow is parallel to the liquid surface or at a certain angle.
  • Dispersing, and providing a plurality of hole/trough structures in the entire gas passage of the above-mentioned disperser the gas flow is broken up by the above-mentioned disperser and mixed into the above-mentioned purification liquid;
  • the plane of the baffle plate may be completely parallel to the liquid surface of the purification liquid, or may form a forward or reverse angle of less than 90° with the liquid surface.
  • the loss of the air flow during the dispersion process is greatly reduced, and the setting of the baffle plate can effectively block the above-mentioned air outlet.
  • the airflow at the mouth floats up, and the airflow is guided by the above-mentioned baffle plate, and moves laterally under the liquid surface in a direction parallel to the liquid surface or at a certain angle to the liquid surface, thus avoiding the risk of the airflow and the liquid level being set shallowly due to the shallow setting of the above-mentioned purification liquid.
  • the defect of insufficient liquid mixing time, and the gas-liquid mixing time can be extended arbitrarily according to needs.
  • the water flow pressure retention of the above disperser should be greater than 200pa;
  • the pressure generated by the designed water level depth of the above-mentioned air outlet should not be greater than the rated wind pressure of the above-mentioned fan.
  • the design water level depth of the above-mentioned air outlet can be set to a range of 0cm to 6cm below the liquid level of the above-mentioned purification liquid, or above the liquid level. The range is from 1cm to 2cm below the liquid level, and the optimal setting is from 0cm to 2cm below the liquid level.
  • Such arrangement makes the water pressure of the above-mentioned air outlet less than the rated wind pressure of the above-mentioned fan, which facilitates the above-mentioned fan to press the air flow into the above-mentioned purification liquid and filter it and then discharge it from the above-mentioned air outlet to the above-mentioned closed space, which facilitates the secondary filtration of the above-mentioned drying and liquid-blocking system. .
  • porous solid materials containing polyurethane foam, activated carbon particles, and zeolite powder in the above purification liquid are immersed in the above purification liquid in the form of sheets, blocks, or balls to further disperse the gas phase flow, increase the contact area, and reduce the liquid level.
  • the fluctuation amplitude balances the air flow in the cavity and reduces system vibration and noise.
  • the above purification liquid is long-lasting, safe, renewable, broad-spectrum sterilizing and virucidal purification liquid
  • the above-mentioned purification liquid components include but are not limited to: water, glycerin, fatty alcohols, fatty polyols, fatty ketones, vegetable oils, animal fats, polyethylene glycol and silicone oil, and optionally include one or more independently selected from the following group Additives: alkali metal salts, polyethylene glycol, lysozyme, sodium bisulfite, carbon black, reducing sugar, vitamin C, zinc oxide, silver nitrate, mineral acid, sodium bicarbonate, sodium hydroxide, Bleach, quaternary ammonium salt, glycerin, hydrogel, hydrosol, super absorbent agent, EDTA, silica gel, alumina, water-absorbent clay, organic polymer, starch, amino acid, cycloglucan, C1-C6 mono, di or Trialkylamines, polymeric amines, detergents, biocides, organic scavengers, fragrances, air fresheners, microorganisms capable of degrading pollutants,
  • the above-mentioned drying liquid-blocking system is installed at a certain angle or horizontally with the above-mentioned purification liquid level, and the range of installation at a certain angle is between 0° ⁇ 89° or 30°-60°, and the outer surface of the above-mentioned drying liquid blocking system is The peripheral seal is fixedly connected to the above-mentioned closed space, so that the intercepted liquid can flow naturally back to the above-mentioned water bath purification system along the surface of the above-mentioned dry liquid-blocking system through its own weight, effectively preventing liquid droplets from being discharged into the air and reducing air pollution. risks of;
  • the above-mentioned drying and liquid-blocking system has an anti-splash filter layer, a condensation drying layer and a super-hydrophobic liquid-blocking and breathable layer from bottom to top.
  • the pore diameter of the above-mentioned super-hydrophobic liquid-blocking and breathable layer is between 0.1 ⁇ m and 50 ⁇ m or between 0.5 ⁇ m and 10 ⁇ m;
  • the above-mentioned anti-splash filter layer is mainly composed of a washable primary filter layer.
  • the above-mentioned anti-splash filter layer can be composed of polyurethane foam, metal foam, fine fiber and polyvinylidene fluoride membrane porous breathable materials.
  • the above-mentioned anti-splash filter layer The filtered airflow enters the above-mentioned condensation drying layer.
  • the above-mentioned condensation drying layer is equipped with a passive or active condenser or filled with desiccant.
  • the above-mentioned condensation drying layer works by condensation and/or moisture absorption, intercepting and adsorbing the remaining moisture in the airflow.
  • the above-mentioned superhydrophobic, liquid-blocking and breathable layer can prevent tiny particles of liquid droplets from entering the environment. , filter out the purified clean air and negative ions generated by the system, and use the blocked liquid droplets to clean the filter surface of itself;
  • the above-mentioned anti-splash filter layer, condensation drying layer and super-hydrophobic liquid-blocking and breathable layer have liquid collection flow channels connected to each other, and the liquid collection flow channels are connected to the above-mentioned water bath purification system.
  • the above-mentioned drying and liquid-blocking system also has medium-to-high efficiency filtration characteristics for particles, which can further improve the purification rate of biological pollution and physical pollution.
  • the highly efficient breathable and liquid-impermeable properties comprehensively block the overflow of liquid in the system, improving system reliability and safety.
  • the flushing effect of the liquid phase flow in the system is used to realize the self-purification function of the above-mentioned super-hydrophobic liquid-blocking breathable layer, effectively This avoids the above-mentioned inherent problem of dust accumulation and failure on the surface of the super-hydrophobic, liquid-blocking and breathable layer.
  • the above liquid level maintenance system has a liquid level sensor, a liquid concentration sensor, an electric/manual valve, an electric/manual two-way pump, a redundant liquid storage tank, a water filling pipe, and a water pumping system.
  • the pipeline, concentrated purification liquid and microcontroller through the liquid level sensor and liquid concentration sensor, detect the liquid level height of the above-mentioned purification liquid in the above-mentioned water bath purification system and the concentration of the above-mentioned purification liquid in the liquid in real time, and transmit the monitoring data to the microcontroller.
  • the microcontroller compares and determines with the standard value, and controls the valves and pumps to replenish water, pump water, and replenish purification liquid based on the determination results. At the same time, it can also provide early warning prompts for manual rehydration;
  • the above-mentioned intelligent control system has air particle sensors, VOCs sensors, biological pollution sensors, temperature and humidity sensors, control panels, power sensors, frequency converters and microcontrollers. It monitors corresponding parameters in real time through a variety of sensors.
  • the microcontroller monitors the parameters according to the
  • the established control logic adjusts the frequency converter to reduce or increase the fan power to adjust the terminal air volume and noise according to environmental changes and reduce energy consumption. Some parameters can be set through the control panel.
  • Such an arrangement facilitates the staff to monitor the amount and concentration of the above-mentioned purification liquid, effectively ensures the concentration and liquid level of the above-mentioned purification liquid, and improves the stability of the system.
  • a purification method of an anti-biological pollution air purification system is also provided:
  • the external air passes through the above-mentioned primary filter layer that can be reused or disposable, and the external air is initially filtered. After filtering out larger dust particles, the external air enters the above-mentioned fan, and then the above-mentioned fan performs work to form a One-way airflow with a certain pressure and kinetic energy enters the above-mentioned air duct;
  • the above-mentioned air duct guides the pressurized air flow into the above-mentioned air inlet in the above-mentioned baffle plate in a direction perpendicular or at a certain angle to the liquid level of the above-mentioned purification liquid.
  • the air flow flows from the above-mentioned air outlet When flowing out at high speed, it is dispersed and broken by the disperser, so that the air flow and the above-mentioned purification liquid are mixed into a gas-liquid two-phase flow.
  • the air flow purified by the above-mentioned water bath dispersion system flows to the above-mentioned dry liquid-blocking system under the action of the larger air pressure of the above-mentioned closed space, and the above-mentioned anti-splash filter layer blocks the entrained air flow in the above-mentioned water bath purification system.
  • Large-sized liquid beads with high kinetic energy, and part of the smaller liquid droplets in the intercepted air flow, are transported back to the above-mentioned water bath purification system through the liquid collection channel;
  • the air flow filtered by the above-mentioned anti-splash filter layer enters the above-mentioned condensation drying layer.
  • the above-mentioned condensation drying layer intercepts and adsorbs most of the remaining liquid droplets and water vapor that tend to be saturated in the air flow by condensing and absorbing moisture.
  • the airflow passing through the above-mentioned anti-splash filter layer and the above-mentioned condensation drying layer enters the surface of the above-mentioned super-hydrophobic, liquid-blocking and breathable layer, and the airflow filtered by the super-hydrophobic, liquid-blocking and breathable layer is discharged into the air.
  • the invention discloses an anti-biopollution air purification system and its purification method which have small wind resistance, easy air dispersion, high energy efficiency ratio (air volume/power), high purification efficiency, and microorganisms are not easily brought into the environment and sterilized. Beneficial effects of high efficiency.
  • Figure 1 is a schematic structural diagram of an anti-biopollution air purification system in an embodiment of the present invention
  • Figure 2 is a schematic diagram of the overall working principle of the system in the embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the working principle of the air supply system of the present invention.
  • FIG. 4 is a schematic diagram of the working principle of the water bath purification system of the present invention.
  • Figure 5 is a schematic diagram of the working principle of the drying and liquid blocking system of the present invention.
  • Icon 1-Air supply system, 2-Water bath purification system, 3-Drying liquid barrier system, 4-Closed space, 5-Air duct, 6-Anti-splash filter layer, 7-Condensation drying layer, 8-Super hydrophobic barrier Liquid breathable layer, 9-fan, 11-primary filter layer, 12-purification liquid, 13-baffle plate, 14-disperser, 15-through hole, 16-air outlet, 17-base, 18-cone Guide cover, 19-gas passage, 20-liquid level maintenance system, 21-intelligent control system.
  • this embodiment proposes an air purification system to prevent biological pollution, including an air supply system 1, a water bath purification system 2 and a drying and liquid blocking system 3;
  • the water bath purification system 2 and the drying and liquid blocking system 3 form a water-blocking and breathable closed space 4.
  • the air supply system 1, the water bath purifying system 2 and the drying and liquid blocking system 3 can be connected or integrated in series according to the requirements of the use environment;
  • the liquid droplets produced by the water bath purification system 2 reach the drying liquid blocking system 3 through the air flow in the closed space 4;
  • an external air source such as an air conditioner or a central air circulation system
  • it may only include the water bath purification system 2 and the drying and liquid blocking system 3 according to the specific conditions of the external air source.
  • the anti-biopollution air purification system disclosed in this embodiment uses pressurized air supply by the fan 9, transverse air delivery under the liquid surface of the purification liquid 12, intermittent multi-stage dispersion, delay of the baffle plate 13, drying and liquid blocking system 3, etc.
  • a series of comprehensive technical means systematically solve the problems of high resistance and low energy efficiency of the water bath purification system 2, so that the air flow can still maintain a considerable pressure after passing through the liquid in the water bath purification system 2, and effectively pass through the dry liquid blocking system 3 , and utilize the scouring effect of the liquid entrained in the air flow to realize self-cleaning of each component of the surface drying and liquid blocking system 3;
  • the present invention connects or integrates the air supply system 1, the water bath purification system 2 and the drying and liquid blocking system 3 in series, so that it meets the market demand, is safe, reliable and efficient, and also has good purification of physical and chemical pollution. Effect.
  • the air supply system 1 has an AC or DC fan 9 that can provide a certain air pressure.
  • the fan 9 is sealed and connected in series with the water bath purification system 2 through the air duct 5 or air duct.
  • the static pressure should be ⁇ 800Pa.
  • the optimal static pressure of the fan 9 can be in the range of 1200Pa ⁇ 2500Pa.
  • Its rated energy efficiency ratio is ⁇ 2.5m 3 /w ⁇ h, which makes the flow through the air supply system 1, the water bath purification system 2 and the drying liquid barrier
  • the airflow in system 3 can only circulate in series to avoid the connection between the airflow that has not been filtered by the water bath purification system 2 and the airflow that has been filtered by the water bath purification system 2, thereby affecting the cleanliness of the airflow filtered by the drying liquid blocking system 3.
  • the air inlet of the fan 9 is provided with a fixed or removable primary filter layer 11 that is reusable or disposable.
  • the primary filter layer 11 is used to filter out coarse particles in the external environment to prevent them from entering the fan 9, and
  • the primary filter layer 11 is configured to be reusable or disposable.
  • the water bath purification system 2 has a purification liquid 12, a baffle plate 13 and disperser 14.
  • the blocking surface of the baffle 13 can be flat, inclined, wavy, or sawtooth. It is used to extend the residence time of the dispersed gas phase flow under the liquid surface.
  • the middle part of the baffle 13 is open. There is a through hole 15, and the through hole 15 and the air duct 5 are sealedly connected to each other.
  • the outer edge of the baffle plate 13 has an air outlet 16. When the baffle plate 13 is in working condition, the air outlet 16 is located below the liquid level of the purification liquid 12.
  • the air outlet 16 is located above or below the liquid level of the purification liquid 12; a conical guide cover 18 is provided at the axis of the air duct of the through hole 15, and the conical guide cover 18 is in contact with the liquid level of the purification liquid 12.
  • a gas passage 19 is formed between the baffles 13; the air supply system 1 inputs the air flow into the purification liquid 12 perpendicularly or at a certain angle to the liquid level of the purification liquid 12, and passes through the gas passage 19 on the conical guide cover 18. Lateral dispersion in a direction parallel to or at a certain angle with the liquid surface, and multiple hole/slot structures are provided in the entire gas passage 19 of the disperser 14.
  • the air flow is broken up by the disperser 14 and mixed into the purification liquid 12; baffles
  • the plane of 13 can be completely parallel to the liquid surface of the purification liquid 12, or have a forward or reverse angle of less than 90° with the liquid surface.
  • the system can pass the water Air volume loss ⁇ 20%, water flow pressure retention ⁇ 200Pa;
  • the air flow and liquid mixture in all directions in the water bath purification system 2 continuously collide with each other during high-speed movement, producing a large amount of water droplets and negative ions.
  • dust particles, VOCs, formaldehyde, bacteria, viruses and other harmful substances in the air are captured and stay in the solution, thereby completing the purification of pollutants.
  • the air pressure retention of the diffuser 14 should be greater than 200pa;
  • the designed water level depth of the air outlet 16 can be set to a range of 0cm to 6cm below the liquid level of the purification liquid 12, or above the liquid level. The range is from 1cm to 2cm below the liquid level. The optimal setting is below the liquid level. 0cm ⁇ 2cm range, which makes the water pressure of the air outlet 16 less than the rated wind pressure of the fan 9, which facilitates the fan 9 to press the air flow into the purification liquid 12 and filter it and then discharge it from the air outlet 16 to the closed space 4, which facilitates the drying of the liquid-blocking system 3 Secondary filtration.
  • porous solid materials containing polyurethane foam, activated carbon particles, and zeolite powder in the purification liquid 12 are immersed in the purification liquid 12 in the form of sheets, blocks, or balls to further disperse the gas phase flow, increase the contact area, reduce the fluctuation range of the liquid level, and balance Airflow in the cavity reduces system vibration and noise.
  • Purifying liquid 12 is long-lasting, safe, renewable, broad-spectrum sterilizing and virucidal purifying liquid 12;
  • the components of the purification liquid 12 include, but are not limited to: water, glycerin, fatty alcohols, fatty polyols, fatty ketones, vegetable oils, animal fats, polyethylene glycol and silicone oil, and optionally include one or more independently selected from the following group Additives: Alkali metal salts, polyethylene glycol, lysozyme, sodium bisulfite, carbon black, reducing sugar, vitamin C, zinc oxide, silver nitrate, mineral acid, sodium bicarbonate, sodium hydroxide, bleach, quaternary ammonium Salt, glycerin, hydrogel, hydrosol, super absorbent agent, EDTA, silica gel, alumina, water-absorbent clay, organic polymer, starch, amino acid, cycloglucan, C1-C6 mono, di or trialkyl amine, Polymeric amines, detergents, biocides, organic scavengers, fragrances, air fresheners, microorganisms capable of degrading pollutants, detergents,
  • the drying liquid blocking system 3 is installed at a certain angle or horizontally with the horizontal plane of the purification liquid 12.
  • the range of installation at a certain angle is between 0° to 89° or 30° to 60°.
  • the outer periphery of the drying liquid-blocking system 3 is sealed and fixedly connected to the closed space 4, so that the intercepted liquid can flow naturally back to the water bath purification system 2 along the surface of the drying liquid-blocking system 3 through its own weight, effectively avoiding the presence of liquid droplets.
  • the drying and liquid-blocking system 3 has an anti-splash filter layer 6, a condensation drying layer 7 and a super-hydrophobic liquid-blocking and breathable layer 8 from bottom to top.
  • the super-hydrophobic liquid-blocking and breathable layer 8 The pore diameter is between 0.1 ⁇ m ⁇ 50 ⁇ m or 0.5 ⁇ m ⁇ 10 ⁇ m;
  • the anti-splash filter layer 6 is mainly composed of a washable primary filter layer 11.
  • the anti-splash filter layer 6 can be made of polyurethane foam, metal foam, fine fiber and polyvinylidene fluoride membrane porous breathable materials.
  • the airflow filtered by the anti-splash filter layer 6 enters the condensation drying layer 7.
  • the condensation drying layer 7 is equipped with a passive or active condenser or filled with desiccant.
  • the condensing drying layer 7 works by condensation and/or moisture absorption to intercept the flow.
  • the anti-splash filter layer 6, the condensation drying layer 7 and the super-hydrophobic liquid-blocking and breathable layer 8 have liquid collection flow channels connected to each other.
  • the liquid collection flow channel is connected to the water bath purification system 2.
  • the drying liquid-blocking system 3 also has the ability to detect particles.
  • the medium and high-efficiency filtration characteristics can further improve the purification rate of biological pollution and physical pollution. Through the high-efficiency breathable and liquid-impermeable characteristics of the super-hydrophobic, liquid-blocking and breathable layer 8, the overflow of liquid in the system is comprehensively blocked, improving the reliability and safety of the system.
  • the scouring effect of the liquid phase flow in the system is used to realize the self-purification function of the superhydrophobic liquid-blocking breathable layer 8, effectively avoiding the inherent problem of dust accumulation and failure on the surface of the superhydrophobic liquid-blocking breathable layer 8.
  • the liquid level maintenance system 20 has a liquid level sensor, a liquid concentration sensor, an electric/manual valve, and an electric/manual two-way pump. , redundant liquid storage dishes, water injection pipes, water pumping pipes, concentrated purification liquid 12 and microcontrollers, through the liquid level sensor and liquid concentration sensor, real-time detection of the liquid level height of the purification liquid 12 in the water bath purification system 2 and the purification liquid 12 in the liquid. concentration, and transmits the monitoring data to the microcontroller.
  • the microcontroller compares and determines with the standard value, and controls the valves and pumps to replenish water, pump water, and replenish the purification liquid 12 based on the determination results. At the same time, early warning prompts can also be provided. Perform artificial rehydration;
  • the intelligent control system 21 has air particle sensors, VOCs sensors, biological pollution sensors, temperature and humidity sensors, control panels, power sensors, frequency converters and microcontrollers. It monitors corresponding parameters in real time through a variety of sensors.
  • the microcontroller monitors the parameters according to the
  • the established control logic adjusts the frequency converter to reduce or increase the power of the fan 9 to adjust the terminal air volume and noise according to environmental changes and reduce energy consumption. Some parameters can be set through the control panel, which is convenient for work.
  • the operator monitors the amount and concentration of the purification liquid 12, effectively ensuring the concentration and liquid level of the purification liquid 12, and improving system stability.
  • the working principle of an anti-biopollution air purification system is that the direction of the arrow in the figure is the direction of air flow movement.
  • the water bath purification system 2 comprehensively utilizes the purification properties of the liquid phase and gas phase impurities in the gas-liquid two-phase flow.
  • system design overall structural design , the fan 9 with specific requirements, the multi-functional and efficient purification liquid 12 and the high-efficiency disperser 14 work together to achieve comprehensive removal of dust particles, VOCs, formaldehyde, bacteria and viruses in the polluted air at one time under the condition of a high energy efficiency ratio. Capture, purify and kill fundamentally solve the possibility of secondary spread of harmful biological pollution;
  • the dry liquid-blocking system 3 uses the highly efficient air-permeable and liquid-impermeable properties of the super-hydrophobic liquid-blocking breathable layer 8 to comprehensively block the overflow of liquid in the system, and at the same time utilizes the flushing effect of the liquid phase flow in the system to achieve the super-hydrophobic liquid-blocking breathable layer 8
  • the self-purification function fundamentally solves the inherent defect that the filter surface of the super hydrophobic liquid-blocking breathable layer 8 is easy to accumulate dust and causes secondary pollution, and perfectly solves various problems of existing products and technologies.
  • a booster fan 9 with appropriate wind pressure is selected through a large number of tests and verifications.
  • the energy efficiency ratio of the fan 9 is ⁇ 2.5m 3 /w ⁇ h
  • the wind pressure is ⁇ 800Pa, which can provide the system with air flow with a certain potential energy while ensuring the system energy efficiency ratio, so as to better overcome the liquid resistance and disperser 14 resistance;
  • the liquid level depth required for gas dispersion is reduced, the water pressure resistance is reduced, the gas outlet area is expanded, and the water-passing gas still has enough air pressure to penetrate the drying liquid-blocking system 33, so that The loss of air volume over water is ⁇ 20%, and the air pressure over water is ⁇ 200Pa; through the setting of intermittent multi-stage disperser 14, effective air flow dispersion is achieved under conditions of shallow liquid level and small wind resistance, and the dispersed air flow and liquid are Fully mixing; through the baffle plate 13 with a certain width and area, the stroke and time of the dispersed gas under the liquid surface are extended, and the net effect is improved without significantly increasing energy consumption. Purification efficiency, the purification efficiency measured in the test is ⁇ 98%.
  • the disperser 14 can be a porous mesh or annular dispersing columns, and the distribution pattern of the annular dispersing columns can be staggered, wavy, zigzag or spiral.
  • the multifunctional and efficient purification liquid 12 has passed a large number of verification tests and uses a long-lasting, safe, renewable and efficient purification solvent. It can sterilize broad-spectrum bacteria and viruses, precipitate and decompose dust and toxic and harmful substances, and complete the entire purification process. No odor or harmful substances are produced.
  • a super-hydrophobic liquid-blocking breathable layer 8 (its pore diameter can be selected in the range of 0.5 ⁇ m to 10 ⁇ m) is selected as a liquid-blocking drying layer after the air flows through water.
  • the liquid-blocking and breathable layer 8 has super-hydrophobic properties and evenly distributed micropores on the surface. It can not only effectively ventilate without significantly reducing the air volume, but also effectively prevent a large number of liquid droplets generated after water bath purification from spilling into the air.
  • the super-hydrophobic liquid-blocking breathable layer 8 also has medium-to-high efficiency filtration characteristics for particles, which can further improve the purification rate of biological pollution and physical pollution.
  • the external air passes through the reusable or disposable primary filter layer 11 to perform preliminary filtration of the external air. After filtering out larger dust particles, the external air enters the fan 9 and then performs work through the fan 9, forming a One-way airflow with a certain pressure and kinetic energy enters the air duct 5;
  • the air duct 5 guides the pressurized air flow into the air inlet in the baffle 13 in a direction perpendicular or at a certain angle to the liquid level of the purification liquid 12.
  • the disperser 14 disperses and crushes the air flow and the purification liquid 12 to form a gas-liquid two-phase flow, and then passes through the gas passage 19 between the baffle plate 13 and the conical guide cover 18 to make the gas-liquid two-phase flow flow in parallel.
  • the water bath purification system has 2 chambers
  • the gas-liquid two-phase flows in all directions in the body continuously collide with each other during high-speed movement, producing a large number of water droplets and negative ions.
  • dispersed liquid phase flow liquid droplet particles and negative ions, Under the large-area and all-round adsorption effect of the particles, dust particles, VOCs, formaldehyde, bacteria, viruses and other harmful substances in the air are captured and stay in the solution, achieving full contact and full absorption;
  • the air flow purified by the water bath dispersion system flows to the drying liquid blocking system 3 under the action of the air pressure of the large closed space 4, and the anti-splash filter layer 6 blocks the air flow conveyed by the water bath purification system 2 with a large entrained
  • the large-sized liquid beads with kinetic energy and the smaller liquid droplets in the intercepted air flow are transported back to the water bath purification system 2 through the liquid collection flow channel;
  • the airflow filtered by the anti-splash filter layer 6 enters the condensation drying layer 7.
  • the condensation drying layer 7 intercepts and absorbs most of the remaining liquid droplets and water vapor that tend to be saturated in the airflow by condensation and moisture absorption.
  • the airflow passing through the anti-splash filter layer 6 and the condensation drying layer 7 enters the surface of the superhydrophobic, liquid-blocking and breathable layer 8, and the airflow filtered by the superhydrophobic, liquid-blocking and breathable layer 8 is discharged into the air.
  • Experiment 1 Efficiently purify biological pollution, with a purification rate of 99.99%.
  • the physical, chemical and biological pollution in the air are captured and stay in the air under the large-area and all-round adsorption of continuous liquid flow, dispersed liquid flow, liquid droplets and negative ions generated in the water bath purification system 2.
  • physical pollution such as dust particles is adsorbed, wrapped and settled by the liquid in the purification liquid 12
  • chemical pollution such as VOCs and formaldehyde is neutralized and decomposed by the purification liquid 12 or water
  • biological pollution such as bacteria and viruses is neutralized and decomposed by the purification liquid 12. It kills the sterilants in the biomass, thus completing the one-time comprehensive purification work of three major pollutants at the same time, achieving high-efficiency purification of full contact and full absorption, and the biological pollution purification rate reaches 99.99%.
  • test model is established as follows:
  • the test is divided into a blank group, a control group and a test group.
  • the blank group does not introduce a purifier
  • the purifier in the control group is a commercially available household air purifier
  • the test group includes five prototype purifiers of the present invention.
  • the main performance parameters of the implementation machine are shown in Table 1 below:
  • the implementation 2 (continuous operation for 500 hours) group in Table 2 is the durability test group of implementation 2. From the test results, there is no significant difference between the performance and the initial state, and the system durability has been initially verified. In the implementation 2 (without drying and liquid blocking system) group, the drying and liquid blocking system 3 was canceled for implementation 2, and its sterilization performance can still reach 98.35%, indicating that the independent water bath purification system 2 also has a good anti-biological pollution effect.
  • test model is established as follows:
  • the test is divided into a blank group, a control group and a test group.
  • the blank group is the test data of polluted air in the environment.
  • the purifier in the control group is a commercially available household air purifier.
  • the test group is five prototype purifiers of the present invention.
  • Air supply system 1 In order to enable the input air flow to be pressed into a certain depth below the liquid level of the purification liquid 12, and to effectively pass through the disperser 14, the anti-splash filter layer 6, the condensation drying layer 7 and the super-hydrophobic liquid barrier In each link such as the breathable layer 8, the air supply system 1 needs to use a medium and high-pressure fan 9 that can increase the wind pressure.
  • the static pressure of the fan 9 should be ⁇ 800Pa, and the rated energy efficiency ratio should be ⁇ 2.5m 3 /w ⁇ h;
  • Water bath purification system 2 In order to ensure that after the air flow is pressed into the purification liquid 12 to be effectively dispersed and broken under the liquid surface, there is still an air volume and air pressure that meets the system terminal requirements to pass through the drying liquid blocking system 3 and purify in the water bath.
  • the pressure generated by the designed water level depth of disperser 14 should not be greater than the rated wind pressure of fan 9.
  • the water level depth can be set to a range of 0cm to 6cm below the liquid surface of the purification liquid 12, or a range of 1cm to 2cm below the liquid surface of the purification liquid 12. More preferably, it can be set to a range of 0cm to 2cm below the liquid surface. 2cm range.
  • the transverse air supply design of the diffuser 14 effectively reduces the water flow resistance, the water flow air volume loss is no more than 20% of the rated air volume of the fan 9, and the water flow wind pressure is retained to be greater than 200pa.
  • Drying and liquid-blocking system 3 In order to ensure the terminal output air volume, the overall air volume loss of the drying and liquid-blocking system 3 should be ⁇ 15%.
  • the anti-splash filter layer 6 uses washable primary filter material
  • the condensation drying layer 7 adopts a reduced windward surface and streamlined design
  • the super-hydrophobic, liquid-blocking and breathable layer 8 can use a microporous super-hydrophobic membrane with a pore diameter of 0.5 ⁇ m to 10 ⁇ m. (Such as polyvinylidene fluoride, etc.).
  • test model is established as follows:
  • the content volatilization amount is ⁇ 0.1mg/m 3
  • the environmental absolute humidity increment is ⁇ 5%, which is effective It blocks the liquid droplets formed in the system from dispersing into the environment, ensuring the safety of use and keeping the indoor environment humidity in a suitable range. And when used as the terminal of the central circulation system, it can effectively block pipeline pollution and avoid the spread of secondary pollution caused by dust accumulation in the pipeline.
  • test objects are implementations 2, 3, and 5 in Table 1, as well as implementation 2 (continuous operation for 500 hours) durability test group and implementation 2 (non-drying liquid barrier system 3) test group.
  • the test results are shown in Table 5 below:
  • the NaCl volatilization amount per cubic meter of gas is below 0.1 mg/ m . It can be considered that the dissolution amount is extremely low or almost no dissolution, and there is no drying liquid barrier The evaporation amount of the test group of system 3 reached 1.175 mg/m 3 . This shows that the drying liquid-blocking system 3 of the present invention has excellent performance in controlling content overflow.
  • the purification and antibacterial components used in the present invention are relatively safe, and the concentration of the purification liquid 12 is controlled within the range of ⁇ 1 to 2 ⁇ . Therefore, it can be confirmed that the amount of volatilization of the system contents is extremely small and the consumption of the purification agent is small. High safety factor.
  • Experiment 5 Comprehensive and efficient purification of biological, chemical and physical dust pollution at one time, without step-by-step procedures and no dead space in the space that is conducive to the growth of biological pollution.
  • the purification process of this solution is in an integrated closed space 4, with gas-liquid two-phase flow of sterilant and high-density water mist.
  • gas-liquid two-phase flow of sterilant and high-density water mist Through dynamic circulation, under the action of diffusion, the entire space is naturally filled with dust and VOCs.
  • the adsorption and sterilization functions of formaldehyde, bacteria, and viruses are completed at the same time. There is no physical space barrier between purification functions and no purification dead corners. All purification functions are comprehensively completed at one time and the risks of traditional technologies are comprehensively avoided.
  • the superhydrophobic liquid-blocking and breathable layer 8 in this system is mainly composed of superhydrophobic microporous filter membranes , which performs surface filtration through the super-hydrophobic properties of its own material and the high-density and evenly distributed micropores. Therefore, pollutants can only be blocked in its filter layer The surface will not invade its interior, but when the surface pollutants accumulate to a certain extent, it will cause the micropores to be clogged, the performance will be reduced, and even end of life.
  • the high-density water mist generated by the dynamic circulation process of the purification liquid 12 in the internal space is used to form liquid on the inner surface of the superhydrophobic liquid-blocking breathable layer 8.
  • the flushing effect realizes the self-cleaning effect on the water-blocking layer, which fundamentally solves the inherent defect of the filter membrane on the surface of the super-hydrophobic liquid-blocking breathable layer 8, which easily accumulates dust and causes secondary pollution.
  • Conventional air purifier sterilization methods generally use high-voltage static electricity, ultraviolet light irradiation or photocatalyst.
  • high-voltage static electricity has the problem of producing ozone
  • ultraviolet irradiation has problems of attenuation and non-transmission
  • the efficiency of photocatalyst is too low.
  • pollutants are adsorbed by the purification liquid 12 during the filtration process.
  • Physical pollution is contained and settled by the liquid immediately after encountering water. Chemical pollution is neutralized or decomposed. Biological pollution is destroyed. All pollutants are achieved. Harmless treatment, thus fundamentally blocking the possibility of secondary diffusion of pollutants.
  • the system can have a liquid level maintenance system 20 and an intelligent control system 21 to effectively ensure the liquid level.
  • the position is constant to ensure system reliability, and the purification degree and air volume can be adjusted in real time according to environmental changes, saving energy and environmental protection.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

La présente invention se rapporte au domaine technique de la purification d'air, et vise à résoudre les problèmes de l'état de la technique de résistance au vent élevée, de difficulté de dispersion dans l'air, de faibles rapports d'efficacité énergétique (volume/puissance d'air), de faible efficacité de purification, de micro-organismes qui sont facilement enveloppés par l'humidité, puis transportés dans l'environnement, et d'une faible efficacité de stérilisation ou d'une stérilisation sensiblement inefficace. L'invention concerne un système de purification d'air anti-pollution biologique et son procédé de purification, comprenant un système d'alimentation en air, un système de purification de bain d'eau et un système de séchage anti-humidité, qui peuvent être connectés en série ou intégrés. Le système de purification de bain d'eau et le système de séchage anti-humidité forment un espace fermé. Des gouttelettes et des particules produites par le système de purification de bain d'eau atteignent le système de séchage anti-humidité au moyen d'un écoulement d'air dans l'espace fermé. Au moins un système d'alimentation en air, au moins un système de purification de bain d'eau et au moins un système de séchage anti-humidité sont nécessaires dans le même système. Les effets bénéfiques de la présente invention sont une faible résistance au vent, une dispersion dans l'air facile, un rapport d'efficacité énergétique élevé (volume/puissance d'air), une efficacité de purification élevée, des micro-organismes facilement transportés dans l'environnement et une efficacité de stérilisation élevée.
PCT/CN2023/082933 2022-08-26 2023-03-22 Système de purification d'air anti-pollution biologique et son procédé de purification WO2024040956A1 (fr)

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