Air treatment device and method for enhancing humidifying and antibacterial performance of wet film based on standing waves

Abstract

The invention provides an air treatment device and method for enhancing humidifying and antibacterial performance of a wet film based on standing waves, and belongs to the technical field of air treatment. The device comprises a standing wave generation unit, an air treatment unit, a wet film self-cleaning unit and a wet film surface bacteriostasis unit. The standing wave generating unit generates a standing wave sound field through an ultrasonic generator, and heat and mass transfer on the surface of the wet film is enhanced. The air treatment unit achieves fresh air humidification, cooling and purification through a wet film. The self-cleaning unit cleans the wet film in all directions through a high-pressure spray head and descaling liquid; and the wet film surface bacteriostasis unit is combined with a degerming solution and an ultrasonic cavitation effect to realize sterilization. The humidifying and purifying efficiency is improved through standing wave enhanced heat and mass transfer, flexible switching between the humidifying mode and the sterilizing mode is achieved through the compartment design, the maintenance cost is reduced through intelligent self-cleaning, the problems that a traditional wet film system is low in humidifying efficiency, poor in antibacterial effect and tedious in maintenance are solved, and the advantages of being efficient, capable of saving energy, intelligent in cleaning and capable of achieving cooperative antibacterial are achieved.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic air treatment technology, and in particular to an air treatment device and method based on the humidification and antibacterial properties of a standing wave enhanced wet film. Background Technology

[0002] Evaporative humidification systems, as highly efficient and energy-saving humidity control devices, have been widely used in scenarios with strict requirements for humidity and air cleanliness, such as data centers, cleanrooms, and medical facilities. Traditional evaporative humidification systems achieve air humidification through water film evaporation, but their humidification efficiency is significantly affected by ambient temperature and humidity, and the moist surface is prone to the growth of pathogenic microorganisms such as Legionella and Aspergillus. In existing technologies, humidification and sterilization functions are often designed separately, resulting in low system integration, increased energy consumption, and higher maintenance costs.

[0003] Currently, wet membrane humidification faces numerous challenges in both humidification and antibacterial properties. Regarding humidification technology, the passive evaporation mode's humidification rate is limited by the pore structure of the wet membrane fibers (5-50 μm pore size), resulting in a weak ability to respond quickly to humidity changes, with the maximum humidification capacity only reaching 65%-70% of the theoretical value. While auxiliary heating humidification can improve efficiency, it significantly increases energy consumption and accelerates scale formation. Traditional ultrasonic atomizers have poor compatibility with wet membrane systems, exhibiting droplet escape problems, with droplets smaller than 10 μm escaping at a rate greater than 15%. In terms of antibacterial technology, ultraviolet sterilization has poor inactivation effects on bacteria inside the wet membrane (killing rate <40%) and poses a risk of ozone layer depletion. Chemical agents can corrode metal components and produce harmful byproducts. High-temperature sterilization is energy-intensive and accelerates the aging of wet membrane materials.

[0004] Therefore, there is an urgent need to develop an efficient, energy-saving air treatment device and method with excellent antibacterial properties. While maintaining the original advantages of the wet film system, innovative structural design and control strategies should be adopted to achieve synergistic optimization of humidification efficiency and microbial inactivation, breaking through the technical bottlenecks of functional separation, low efficiency and secondary pollution in traditional technologies. Summary of the Invention

[0005] To address the problems existing in the above-mentioned background technology, the present invention proposes an air handling device and method based on the humidification and antibacterial properties of standing wave enhanced wet film, which enables the air handling equipment to operate efficiently in scenarios with strict requirements for humidity and air cleanliness, such as data centers.

[0006] The technical solution of this invention to solve the above problems is:

[0007] An air handling device and method based on the humidification and antibacterial properties of a standing wave enhanced wet film, characterized by:

[0008] Includes a standing wave generation unit, an air handling unit, a self-cleaning unit, and a wet film surface antibacterial unit;

[0009] The air handling unit includes a wet membrane, and the air handling unit is used to humidify and cool fresh air;

[0010] The standing wave generating unit is used to generate a standing wave sound field to enhance the humidification or sterilization of the wet film by treating water or solution.

[0011] The self-cleaning unit is used to provide water and descaling solution to the wet membrane in the air handling process and to clean the surface of the wet membrane;

[0012] The wet film antibacterial unit is used to store the bactericidal solution and provide the bactericidal solution for wet film sterilization.

[0013] Furthermore, the standing wave generating unit includes a top ultrasonic generator and a bottom ultrasonic generator arranged opposite to each other, with the wet film located between the top ultrasonic generator and the bottom ultrasonic generator.

[0014] The standing wave generating unit is used to atomize water or solution on the wet film surface into micron-sized droplets, and to atomize some of the droplets falling from the water distributor into droplets and spray them directly onto the wet film surface, thereby accelerating the water evaporation rate and improving humidification efficiency.

[0015] Furthermore, the aforementioned air handling unit includes an air inlet, an air outlet, and a water distributor. The air inlet and air outlet are located on opposite sides of the wet membrane, and the water distributor is located between the top ultrasonic generator and the wet membrane.

[0016] Furthermore, the air handling unit also includes a filter and a circulating water pump; the circulating water pump is used to supply water to the water distributor, and the filter is used to filter the water entering the water distributor.

[0017] Furthermore, the self-cleaning unit includes six high-pressure nozzles, a water nozzle connector, and a nozzle rotation unit. The six water nozzles located on both sides of the wet film are connected to a high-pressure water pump through independent pipelines. The nozzle rotation unit drives the high-pressure nozzles to rotate, which can perform all-round, no-dead-angle rinsing of the wet film and effectively remove dust and microbial deposits.

[0018] Furthermore, the self-cleaning unit described above also includes a water storage tank, a descaling solution storage tank, and a wastewater collection tank; the circulating water pump is connected to the water storage tank and the descaling solution storage tank respectively via valves, and the wastewater collection tank is located below the wet membrane for collecting wastewater falling from the wet membrane. The wastewater collection tank is located above the water storage tank. A drain valve is provided at the bottom of the wastewater collection tank.

[0019] Furthermore, the aforementioned wet film antibacterial unit includes a bactericidal solution storage tank and an infusion pipeline, and the circulating water pump is connected to the bactericidal solution storage tank through a valve.

[0020] Furthermore, the air handling device based on the standing wave enhanced wet film humidification and antibacterial performance also includes a control unit and a humidity sensor. The humidity sensor is used to measure indoor humidity, and the control system dynamically adjusts the working power of the top ultrasonic generator and the bottom ultrasonic generator according to the indoor humidity data fed back by the humidity sensor in real time.

[0021] In addition, this invention also proposes an air treatment method, which is based on an air treatment device with standing wave enhanced wet film humidification and antibacterial properties, and is characterized by including three operating modes:

[0022] (1) High-efficiency humidification mode

[0023] A circulating water pump draws water from the water tank and evenly wets the surface of the wet membrane through a water distributor. Ultrasonic generators at the top and bottom generate standing wave sound fields, breaking the water film into micron-sized droplets, significantly increasing the water-air contact area. Fresh air flows through the wet membrane and fully exchanges heat and moisture with the droplets, achieving efficient humidification, cooling, and purification. The system dynamically adjusts the ultrasonic power according to the ambient humidity to optimize efficiency.

[0024] In this mode, the system uses ultrasound and a wet film to work together to maximize humidification, cooling, and purification, and can also intelligently adjust according to the ambient humidity.

[0025] (2) Self-cleaning mode

[0026] The system pauses the humidification function and switches the circulating medium to a special descaling solution (such as EDTA) to wet the wet membrane and dissolve scale. The high-pressure rotary nozzles installed on both sides of the wet membrane start up and use a wide-angle fan-shaped water flow to powerfully rinse the wet membrane from all directions, removing the attached dirt and biofilm. The wastewater after rinsing flows into the water tank and is automatically discharged through the drain valve. Finally, the wet membrane is rinsed with clean water and then the system returns to standby mode, significantly reducing maintenance requirements and extending the life of the wet membrane.

[0027] In this mode, the system uses a specialized descaling solution and high-pressure flushing to automatically remove dirt from the wet membrane, reducing maintenance and extending its lifespan. The self-cleaning mode supports timed or manual triggering, combined with an automatic wastewater discharge function, ensuring the wet membrane remains clean for extended periods and reducing the frequency of manual maintenance.

[0028] (3) Antibacterial mode

[0029] The system automatically switches to an independent sterilization solution storage tank, and the circulation pump delivers the sterilization solution to the wet membrane for full saturation. The ultrasonic generator operates at a specific antibacterial frequency, utilizing the cavitation effect to enhance the penetration, diffusion, and interaction time of the sterilization solution with microorganisms in the pores of the wet membrane, achieving efficient and deep sterilization. After treatment, the system switches back to clean water circulation to rinse away any residual sterilization solution, ensuring no chemical residue risk and effectively solving the problem of microbial growth on the wet membrane.

[0030] In this mode, the system uses ultrasound of a specific frequency to enhance the sterilization effect. After deep sterilization, there is no residue after rinsing, thus solving the problem of microbial growth.

[0031] Advantages of this invention:

[0032] This invention provides an air handling device and method based on the humidification and antibacterial properties of a standing wave enhanced wet film. It can operate efficiently in scenarios with strict requirements for humidity and air cleanliness, such as data centers and cleanrooms. The application of standing wave enhanced humidification and antibacterial technology greatly improves humidification efficiency and sterilization effect. The wet film surface is not prone to scaling, and the cleanliness is greatly improved and maintained, significantly reducing maintenance costs. At the same time, it improves water resource utilization. It has three working modes that can be flexibly selected according to different indoor humidity requirements, realizing the regulation of different indoor temperature and humidity environments and meeting the high cleanliness requirements of different scenarios. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the air handling device based on the humidification and antibacterial properties of a standing wave enhanced wet film proposed in this invention.

[0034] In the picture:

[0035] Top ultrasonic generator 101, bottom ultrasonic generator 102;

[0036] 201 Wet membrane, 202 Air inlet, 203 Air outlet, 204 Water distributor, 205 Filter, 206 Circulating water pump;

[0037] High-pressure nozzle 301, water nozzle connector 302, water nozzle rotating unit 303, water storage tank 304, descaling solution storage tank 305, drain valve 306, pumping valve 307, descaling solution valve 308, sewage collection tank 309.

[0038] 401, sterilizing solution storage tank; 402, sterilizing solution valve; 403, infusion pipeline. Detailed Implementation

[0039] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; however, the present invention may also be implemented in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0040] Example 1

[0041] Reference Figure 1 An air handling device based on the humidification and antibacterial properties of a standing wave-enhanced wet membrane includes an ultrasonic processing unit, an air handling unit, a self-cleaning unit, and a membrane surface antibacterial unit. The air handling unit includes a wet membrane 201, used for humidifying, cooling, and purifying incoming fresh air; the standing wave generating unit generates a standing wave sound field to enhance the heat and mass exchange effect on the surface of the wet membrane 201 during the humidification and antibacterial process; the self-cleaning unit cleans scale and deposits from the surface of the wet membrane 201; and the wet membrane surface antibacterial unit performs sterilization and antibacterial treatment on the surface of the wet membrane 201 under the action of the standing wave sound field.

[0042] Specifically, the standing wave generating unit includes a top ultrasonic generator 101 and a bottom ultrasonic generator 102 disposed opposite to each other, and the wet film 201 is located between the top ultrasonic generator 101 and the bottom ultrasonic generator 102.

[0043] The ultrasonic generators at the top and bottom produce a standing wave sound field. The waves break up the water droplets, making the droplets smaller and evenly distributed on the wet film. This allows the droplets to have more contact with the air, increasing the evaporation rate of water and thus improving the humidification efficiency. It also solves many problems caused by water splashing in the practical application of wet curtain humidification, such as equipment damage, and effectively improves the cooling efficiency.

[0044] Specifically, the air handling unit includes an air inlet 202, an air outlet 203, and a water distributor 204. The air inlet 202 and the air outlet 203 are located on opposite sides of the wet membrane 201, and the water distributor 204 is located between the top ultrasonic generator 101 and the wet membrane 201. The windward side of the wet membrane is connected to the inlet of the air inlet 202, and fresh air enters the wet membrane assembly evenly through the guide air duct. The atomized droplets form a thin water film on the surface of the wet membrane, allowing for full contact between the air and the wet membrane. Humidification and cooling are achieved through water film evaporation. The porous structure of the wet membrane can intercept and filter particulate matter in the air. At the same time, the ultrasonic generator emits ultrasonic waves to form standing waves, which can enhance the fusion of particulate matter and water in the air, improve purification efficiency, and enhance air cleanliness. An airflow distribution plate is installed on the inner wall of the guide air duct to ensure that the air flows evenly on the surface of the wet membrane and avoid local over-humidity or over-dryness.

[0045] In some embodiments of the present invention, the air handling unit further includes a filter 205 and a circulating water pump 206; the circulating water pump 206 is used to supply water to the water distributor 204, and the filter 205 is used to filter the water entering the water distributor 204.

[0046] In some embodiments of the present invention, the self-cleaning unit includes a high-pressure nozzle 301, a water nozzle connector 302, and a nozzle rotation unit 303; the number of high-pressure nozzles 301 is multiple, and the multiple high-pressure nozzles 301 are distributed on the left and right sides of the wet film 201. The high-pressure nozzles 301 are mounted on the nozzle rotation unit 303 through the water nozzle connector 302. The nozzle rotation unit 303 drives the high-pressure nozzles 301 to rotate, which can perform all-round and thorough rinsing of the wet film, effectively removing dust and microbial deposits.

[0047] In some embodiments of the present invention, the self-cleaning unit further includes a water storage tank 304, a descaling solution storage tank 305, and a wastewater collection tank 309; the circulating water pump 206 is connected to a liquid delivery pipe 403, which is connected to the water storage tank 304 via a pumping valve 307 and to the descaling solution storage tank 305 via a descaling solution valve 308; the wastewater collection tank 309 is located below the wet membrane 201 and is used to collect wastewater falling from the wet membrane 201. The wastewater collection tank 309 is located above the water storage tank 304. A drain valve 306 is provided at the bottom of the wastewater collection tank 309; opening the drain valve 306 discharges the wastewater.

[0048] In a preferred embodiment of the present invention, the bottom of the sewage collection chamber 309 is set as an inclined surface, and the bottom side where the sewage discharge valve 306 is located is the lowest point, which is conducive to the discharge of sewage.

[0049] The circulating medium is switched to descaling solution, which is pumped to the top distributor of the wet membrane to evenly wet it. After the descaling solution wets the membrane, a high-pressure water gun thoroughly rinses it. Under pressure, the water flow powerfully washes the pores of the wet membrane, removing attached dust, microorganisms, and other contaminants. A wastewater collection chamber located below the wet membrane collects the wastewater that falls from it, preparing it for subsequent operation and effectively extending the service life of the wet membrane.

[0050] In some embodiments of the present invention, the wet film surface antibacterial unit includes a bactericidal liquid storage tank 401, and the circulating water pump 206 is connected to the bactericidal liquid storage tank 401 through a bactericidal liquid valve 402. The water storage tank 304 is located below the sewage collection tank 309, and the descaling liquid storage tank 305 and the bactericidal liquid storage tank 401 are located below the water storage tank 304.

[0051] The liquid storage section employs a double-layered compartmentalized structure, comprising a water storage compartment and a solution storage compartment. This enables the system to simultaneously provide humidification, cooling, and sterilization capabilities. During humidification and cooling, a water pump draws water from the water storage compartment, and ultrasonic atomization further enhances humidification for smoother operation. During sterilization, the water pump draws a sterilizing solution from the solution storage compartment. Ultrasonic waves create a cavitation effect on the wet film surface, strengthening the atomization of the sterilizing solution and increasing its sterilization area. The ultrasonic generator emits ultrasonic waves and simultaneously generates standing waves, which enhance the suspension time of the atomized sterilizing solution in the air, thereby increasing sterilization efficiency and achieving the sterilization function.

[0052] In some embodiments of the present invention, the air handling device based on the standing wave enhanced wet film humidification and antibacterial performance further includes a control unit and a humidity sensor. The humidity sensor is used to measure indoor humidity, and the control system dynamically adjusts the working power of the top ultrasonic generator 101 and the bottom ultrasonic generator 102 according to the indoor humidity data fed back by the humidity sensor in real time.

[0053] After the water reaches the water distributor 204, the ultrasonic processing unit 101 uses the principle of high-frequency ultrasonic oscillation to atomize the water into tiny water droplets (the diameter of the droplets is usually 1-5μm). The atomized water vapor is dispersed into the surrounding space, achieving air humidification. During this process, the control unit can adjust the working status of the standing wave generation unit (such as power level, start / stop, etc.) and the water flow of the wet film self-cleaning unit according to set parameters or environmental humidity feedback.

[0054] Specifically, this device has three operating modes: high-efficiency humidification mode, self-cleaning mode, and antibacterial mode.

[0055] (1) High-efficiency humidification mode

[0056] This mode is primarily suitable for dry environments or scenarios where air humidity requirements increase rapidly, such as dry air after indoor heating in winter or sudden humidity drops in data centers. In this situation, all components of the device work together to maximize the humidification efficiency of the standing wave enhanced wet film.

[0057] Specifically, refer to Figure 1 After the air handling unit is started, the circulating water pump delivers water from the water storage tank 304 to the water distributor 204 at the top of the wet membrane. The water distributor 204 evenly wets the entire surface of the wet membrane 201. At the same time, the top ultrasonic generator 101 and the bottom ultrasonic generator 102, installed 20-50 cm above and below the wet membrane 201, start working and emit ultrasonic waves in opposite directions to form a stable standing wave field on the surface of the wet membrane 201. The sound pressure gradient of the standing wave field causes the water adsorbed on the surface of the wet membrane to be rapidly atomized into droplets with a particle size of 8-12 μm.

[0058] When air enters the air handling channel and passes through the wet membrane 201, the control system dynamically adjusts the operating power of the ultrasonic transducer based on the indoor humidity data fed back in real time by the humidity sensor. If the indoor humidity is detected to be far below the set threshold, the system adjusts the ultrasonic power to the maximum value to enhance the standing wave field intensity, accelerate water atomization, and ensure that the droplets are fully mixed with the air to quickly increase the air humidity; when the humidity approaches the set value, the ultrasonic power is reduced to maintain a stable humidification effect.

[0059] (2) Self-cleaning mode

[0060] The self-cleaning mode is used to periodically remove dirt and impurities from the wet membrane surface, ensuring stable device performance. It can be manually triggered or started on a timer. Upon startup, the system first shuts down the ultrasonic transducer and circulating water pump, pausing the humidification function. The descaling fluid valve 308 in the water tank 305 of the self-cleaning unit opens, switching the circulating medium to descaling fluid, which is then pumped to the water distributor 204 at the top of the wet membrane 201, evenly wetting the membrane 201. The descaling fluid is typically EDTA (ethylenediaminetetraacetic acid), which can form stable chelates with calcium and magnesium ions, used to remove light scale.

[0061] Six high-pressure nozzles 301 located on both sides of the wet membrane 201 are activated. Each nozzle is connected to a high-pressure water pump via an independent pipeline. The nozzle rotation unit 303 drives the high-pressure nozzles 301 to rotate, using high-pressure water flow to thoroughly rinse the wet membrane 201. The nozzles are evenly spaced along the height of the wet membrane 201 to ensure coverage of the entire surface of the wet membrane 201. Under pressure, the water flow powerfully washes away the pores of the wet membrane, removing attached dust, microorganisms, and other contaminants.

[0062] During the rinsing process, the wastewater collection chamber 309, located below the wet membrane 201, collects the wastewater that falls from the wet membrane 201. Simultaneously, the left-side drain valve 306 opens to discharge the wastewater carrying dirt. After rinsing for 5-8 minutes, the high-pressure water pump switches to supplying clean water for a second rinse of the wet membrane 201, thoroughly removing any residual impurities. After rinsing is complete, the drain valve 306 closes, and the circulating water pump 206 resumes water supply, immersing the wet membrane 201 in preparation for subsequent operation and effectively extending its service life.

[0063] (3) Antibacterial mode

[0064] After activating this mode, the switching valve switches the circulating medium to a dedicated sterilization solution. The sterilization solution in the sterilization solution storage tank 401 is transported to the water distributor 204 at the top of the wet membrane 201 via the circulating water pump 206, evenly wetting the wet membrane 201. The sterilization solution penetrates the pores of the wet membrane 201, making full contact with microorganisms and disrupting their cell membrane structure.

[0065] Meanwhile, the top ultrasonic generator 101 and the bottom ultrasonic generator 102 operate at specific frequencies and power, utilizing the cavitation effect to enhance the diffusion and sterilization capabilities of the disinfectant, making the disinfectant more evenly distributed inside the wet membrane 201, and greatly improving the microbial kill rate on the surface of the wet membrane 201.

[0066] In summary, the air handling device and method based on standing wave enhanced humidification and antibacterial performance of the evaporative wet film, with standing wave technology at its core, integrates three major functions: high-efficiency humidification, intelligent self-cleaning, and synergistic antibacterial properties. It addresses the pain points of traditional evaporative wet film systems, such as low efficiency, susceptibility to contamination, and difficult maintenance. Its three operating modes allow for flexible selection based on different air handling needs at any given time. It successfully overcomes the bottlenecks of traditional evaporative wet film humidification systems in terms of efficiency, antibacterial properties, and ease of use, achieving a comprehensive performance leap in terms of high efficiency, energy saving, deep cleaning, intelligent maintenance, and stable reliability. It is particularly suitable for high-end scenarios (such as data centers, medical cleanrooms, precision manufacturing, and high-end laboratories) with stringent requirements for humidity control accuracy, air cleanliness, and ease of operation and maintenance.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can still adjust the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Therefore, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. An air handling device based on the humidification and antibacterial properties of a standing wave enhanced wet film, characterized in that: Includes a standing wave generation unit, an air handling unit, a self-cleaning unit, and a wet film surface antibacterial unit; The air handling unit includes a wet membrane (201), which is used to humidify, cool, and purify the incoming fresh air. The standing wave generating unit is used to generate a standing wave sound field to enhance the heat and mass exchange effect on the surface of the wet film (201) during the humidification and antibacterial process; The self-cleaning unit is used to clean scale and deposits on the surface of the wet film (201); The wet film surface antibacterial unit is used to sterilize and inhibit the surface of the wet film (201) under the action of the standing wave sound field.

2. The air handling device based on the humidification and antibacterial properties of a standing wave enhanced wet film as described in claim 1, characterized in that: The standing wave generating unit includes a top ultrasonic generator (101) and a bottom ultrasonic generator (102) arranged opposite to each other, and the wet film (201) is located between the top ultrasonic generator (101) and the bottom ultrasonic generator (102).

3. An air handling device based on standing wave enhanced wet film humidification and antibacterial properties as described in claim 2, characterized in that: The air handling unit includes an air inlet (202), an air outlet (203), and a water distributor (204); The air inlet (202) and air outlet (203) are located on both sides of the wet membrane (201), and the water distributor (204) is located between the top ultrasonic generator (101) and the wet membrane (201).

4. An air handling device based on standing wave enhanced wet film humidification and antibacterial properties as described in claim 3, characterized in that: The air handling unit also includes a filter (205) and a circulating water pump (206); The circulating water pump (206) is used to supply water to the water distributor (204), and the filter (205) is used to filter the water entering the water distributor (204).

5. An air handling device based on standing wave enhanced wet film humidification and antibacterial properties as described in claim 4, characterized in that: The self-cleaning unit includes a high-pressure nozzle (301), a water nozzle connector (302), and a nozzle rotation unit (303); The number of high-pressure nozzles (301) is multiple, and the multiple high-pressure nozzles (301) are distributed on the left and right sides of the wet film (201). The high-pressure nozzles (301) are installed on the nozzle rotating unit (303) through the water nozzle connector (302), and the nozzle rotating unit (303) drives the high-pressure nozzles (301) to rotate.

6. An air handling device based on standing wave enhanced wet film humidification and antibacterial properties as described in claim 5, characterized in that: The self-cleaning unit also includes a water storage tank (304), a descaling solution storage tank (305), and a wastewater collection tank (309); The circulating water pump (206) is connected to the water storage tank (304) and the descaling liquid storage tank (305) through valves respectively. The sewage collection tank (309) is located below the wet membrane (201) and is used to collect sewage falling from the wet membrane (201).

7. An air handling device based on standing wave enhanced wet film humidification and antibacterial properties as described in claim 6, characterized in that: The wet film surface antibacterial unit includes a bactericidal liquid storage tank (401), and the circulating water pump (206) is connected to the bactericidal liquid storage tank (401) through a valve.

8. An air handling device based on standing wave enhanced wet film humidification and antibacterial properties as described in claim 7, characterized in that: The bottom of the sewage collection chamber (309) is provided with a drain valve (306); the water storage chamber (304) is located below the sewage collection chamber (309), and the descaling liquid storage chamber (305) and the bactericidal liquid storage chamber (401) are located below the water storage chamber (304).

9. An air handling device based on standing wave enhanced wet film humidification and antibacterial properties as described in claim 8, characterized in that: It also includes a control unit and a humidity sensor, which is used to measure indoor humidity. The control system dynamically adjusts the working power of the top ultrasonic generator (101) and the bottom ultrasonic generator (102) based on the indoor humidity data fed back by the humidity sensor in real time.

10. An air treatment method, based on the air treatment device of claim 9, which features humidification and antibacterial properties based on standing wave enhanced wet film, characterized in that, Includes three operating modes: (1) High-efficiency humidification mode: The circulating water pump (206) draws water from the water storage tank (304) and evenly wets the surface of the wet membrane (201) through the water distributor (204); the ultrasonic generators above and below generate standing wave sound fields, which break the water film into micron-sized droplets and increase the water-air contact area; the fresh air flows through the wet membrane (201) and fully exchanges heat and moisture with the droplets to achieve high-efficiency humidification, cooling and purification. The control unit dynamically adjusts the ultrasonic power according to the ambient humidity to optimize efficiency. (2) Self-cleaning mode: The high-efficiency humidification mode is paused, and the circulating water pump (206) switches the circulating medium to descaling liquid to wet the wet membrane (201) to dissolve scale; the high-pressure nozzles (301) installed on both sides of the wet membrane (201) are started, and the nozzle rotating unit (303) drives the high-pressure nozzles (301) to rotate to rinse the wet membrane (201) with a fan-shaped wide-angle water flow to remove the attached dirt and biofilm; the flushed sewage flows into the sewage collection chamber (309) and is automatically discharged through the sewage discharge valve (306). Finally, the circulating water pump (206) switches the circulating medium to clean water to rinse the wet membrane (201) and returns to standby mode after completion. (3) Antibacterial mode: The circulating water pump (206) delivers the bactericidal liquid to the wet membrane (201) and fully wets it; the ultrasonic generator operates at the antibacterial frequency, and uses the cavitation effect to enhance the penetration, diffusion and interaction time of the bactericidal liquid in the pores of the wet membrane (201) and with microorganisms, so as to achieve efficient deep sterilization. After treatment, switch back to clean water circulation to rinse away any remaining disinfectant.

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