Air purification system

Abstract

An air purification module, designed for use in the air duct of an air handling unit in a central air conditioning system, comprises: a first housing with opposing intake and exhaust surfaces that allow airflow; a panel assembly removably mounted within the first housing, comprising a cleaning filter panel, two foam metal panels, and several foam metal panels with a photocatalyst coating, arranged in parallel from the intake surface toward the exhaust surface; a short-wave ultraviolet lamp assembly mounted within the first housing; and a controller and a DC high-voltage generator mounted outside the first housing. The air purification module effectively inactivates bacteria and pathogens and filters out volatile organic compounds, thereby providing more efficient air purification and sterilization.

Description

Technical Field

[0001] The present application relates to a system for being arranged in an air handling unit of a central air conditioning system, and more particularly to an air purification module built into an air passage of the air handling unit to provide air purification capabilities to an environment. Background Art

[0002] Today, most air purification devices are equipped with traditional fiber filters. These conventional air filters, including HEPA filters, are based on planar fiber filtration technology. The raw materials used are essentially paper and plastic fibers, woven together to produce filters with a dense mesh structure and sufficient thickness. Due to the physical barrier and adhesion effects, these filters have good capture efficiency for general particulate matter, meeting HEPA standards. However, these commonly used fiber filters have significant disadvantages, including excessively high air resistance and limited ability to inhibit harmful microorganisms. Furthermore, their effective filtration area is much smaller than their surface area, necessitating the folding of the filters into numerous layers to increase the surface area to the required volume ratio. Because the filters are made of paper and plastic, they are neither heat-resistant nor moisture-resistant and cannot be used for extended periods. Plastic filters are not biodegradable and, when discarded, inevitably create a double layer of secondary pollution: the production of non-recyclable materials and the continued proliferation of active microorganisms. Therefore, the use of new biodegradable filters is essential.

[0003] This application introduces biodegradable soft polyurethane low-resilience memory foam and metal foam. Chinese Patent No. ZL200810178640.6 discloses soft polyurethane low-resilience foam, which is produced by adjusting the amount and type of polyols, polyisocyanates, surfactants, crosslinking agents, catalysts, or other additives. Metal foam can be produced using gold, silver, copper, iron, nickel, zinc, tin, titanium, lead, stainless steel, or other alloys. Both memory foam and metal foam share the characteristics of high air permeability and low air resistance, and most importantly, they are biodegradable.

[0004] All bacteria and viruses must attach to some substance, whether it's particulate matter (PM) or some form of water vapor or aerosol, to spread around them. An effective method for capturing these particles and aerosols is becoming increasingly important. The combination of static electricity and metal foam is an ideal mechanism.

[0005] Pulse sterilization uses high-voltage pulsed electric fields to inactivate cells, leading to cell membrane disruption and cell death. Because it generates relatively low heat, this method has the advantage of sterilizing harmful contaminants without denaturing the subject's physiological compounds. Pulse sterilization began in the UK as early as 1967. Initially, radio frequency (RF) electric fields were used, but results were unsatisfactory because fields less than 2 kilovolts / cm were insufficient to kill bacteria (Sale, 1967). Continuous experiments led to the discovery that direct current (DC) pulses reaching 25,000 volts / cm were effective in killing bacteria and yeast. The elimination rate depends on the pulse width, number of discharges, and field strength. Different bacteria have different sensitivities to electric fields, with yeast being more sensitive than vegetative bacteria. Experiments have shown that strong electric fields can cause lysis of red blood cells and protoplasm, leakage of intercellular material, inactivation of Escherichia coli, and relaxation of laccasein. The conclusion is that strong electric fields cause irreversible damage to cell membranes and ultimately lead to cell death. Because metal foam is inherently metallic and conductive, when harmful contaminants are trapped in its pores, a pulsed high-voltage DC static current is released, instantly killing the trapped biological contaminants. While high-voltage static electricity has a high voltage, the current is low, so even 20,000 volts pose no danger to human life. However, static discharge also generates an electromagnetic field around it, which, while shorter in duration, is higher in intensity. Therefore, extensive safety measures, such as insulation and sensor-based power switches, must be incorporated into the design to provide protection in the event of an emergency. Furthermore, according to the inventors' understanding, the current use of high voltages (e.g., 20,000 volts or higher) to kill pathogens can only be safely performed in a liquid environment.

[0006] Germicidal UV light, also known as shortwave UVC or UV-C (including germicidal UV light with a wavelength of 253.7 nm), is commonly used to sterilize air, surfaces, and water. It kills a wide range of pathogens, including bacteria, viruses, mold, fungi, and spores, which can spread infections, cause allergies, trigger asthma attacks, and cause other adverse health effects. Accidental exposure to shortwave UVC can cause skin redness and eye irritation, but according to Dr. Nardell of Harvard Medical School, it does not cause skin cancer or cataracts. Technically, UV light does not "kill" bacteria directly; rather, it inhibits replication or inactivates them by damaging their DNA. More specifically, shortwave UVC energy is absorbed by the DNA and RNA contained in cells, forming dimers, or "double bonds," between adjacent nucleotides (thymine). These dimers inhibit the chain's ability to replicate, leading to the extinction of the bacterial colony. The duration of UV sterilization depends on the intensity and duration of the UV light exposure. Higher UV intensity requires shorter exposure times. Typically, a single sterilization cycle outdoors takes several minutes. A properly designed and applied UV system for HVAC (High Voltage Alternating Current) coil disinfection can help clean coils and prevent microbial growth, reducing energy use and maintenance costs. Following best industry practices recommended by the American Society of Building Technology (ASHRAE Handbook - HVAC Applications, Chapter 62, Ultraviolet Air and Surface Treatment), UV cooling coil disinfection is combined with airflow irradiation for the most effective UV solution. In this application, germicidal UV is added to enhance the sterilization effect.

[0007] In recent years, heterogeneous photocatalysis has become an effective and cost-effective method for eliminating biofouling. The reactive oxygen species (ROS) produced, such as hydroxyl radicals (OH), superoxide (O2), singlet oxygen ( 1O2) and hydrogen peroxide (H2O2), among others, can act as strong oxidants to destroy harmful microorganisms. Semiconductors such as zinc oxide (ZnO) and titanium dioxide (TiO2) are potential photocatalysts with bactericidal activity and have demonstrated excellent performance in air sterilization. However, their bactericidal efficiency is far from satisfactory, particularly in high-speed airflows in combination with other pollutants, such as particulate matter and volatile organic compounds (VOCs). Metal foams possess key properties, such as large surface area, high porosity, highly dispersed active sites, and tunable functionality, making them suitable not only for air filtration but also for direct use as catalysts for the oxidation of air pollutants. Metal foams offer the potential for optimizing photocatalytic performance at the molecular level through the rational regulation of metal clusters and organic linkers, which is considered a significant competitive advantage over traditional conductors. Metal foams have significantly greater contact surface area than flat surfaces and exhibit higher photocatalytic performance. Due to their superior design, metal foams have been successfully applied in photocatalysis, CO2 emission reduction, and the oxidation of toxic chemicals based on reactive oxygen species.

[0008] This application provides a high-efficiency, safe, and simple air purification module. The module can be adaptively installed in air handling units of various central air conditioning systems or used as a standalone air purification device, and can be conveniently used in various buildings or indoor environments to improve indoor air quality. Summary of the Invention

[0009] The present application aims to at least to some extent address one of the above-mentioned technical problems in the related art. To this end, according to one aspect of the present application, an embodiment of the present application provides an air purification module for use in an air duct of an air handling unit (AHU) of a central air conditioning system of a building. The air purification module comprises: a first housing, the first housing comprising a closed surface, an air intake surface and an exhaust surface that allow airflow; a panel assembly, the panel assembly being detachably mounted within the interior of the first housing; a short-wave ultraviolet lamp assembly, the short-wave ultraviolet lamp assembly being mounted within the interior of the first housing; a controller, the controller being mounted within a second housing outside the first housing; and a DC high-voltage generator, the DC high-voltage generator being mounted within a third housing outside the first housing. The panel assembly comprises: a first panel, the first panel comprising a cleaning filter panel; a second panel, the second panel comprising a first and a second adjacent metal foam panel, the first and second metal foam panels being connected to the positive and negative electrodes of the high-voltage direct current transmission generator, respectively; and a third panel, the third panel comprising a plurality of third metal foam panels having a photocatalyst coating, wherein the first, second, and third panels are sequentially arranged in parallel in a direction from the air intake surface toward the exhaust surface.

[0010] According to one example, the cleaning filter panel is made of degradable soft polyurethane low-resilience memory foam, and the cleaning filter panel is provided with a first sensor for monitoring the cleanliness of the cleaning filter panel.

[0011] According to one example, the shortwave ultraviolet lamp group includes a plurality of shortwave ultraviolet lamps disposed between the second panel and the third surface.

[0012] According to one example, the short-wave ultraviolet light assembly includes a plurality of LED-based short-wave ultraviolet light strips disposed between the second panel and the third panel.

[0013] According to one example, the first metal foam panel and the second metal foam panel are respectively provided with a second sensor, and the second sensor is used to monitor the voltage applied to the second panel.

[0014] According to one example, the gap between the first metal foam panel and the second metal foam panel should be at least 15 cm and the outer edges should be sealed securely with insulating material.

[0015] According to one example, the photocatalyst layer on the third metal foam panel is a titanium dioxide coating.

[0016] According to one example, the air purification module is connected to an external power source.

[0017] According to one example, the first housing, the second housing, and the third housing respectively include doors and door sensors disposed on the doors, and the door sensors are connected to an external power source for controlling the external power source to be disconnected when the doors are opened.

[0018] According to one example, the plurality of third foam metal panels with a photocatalyst coating of the third panel are replaced by one or more high efficiency air filtration (HEPA) panels.

[0019] According to one aspect of the present application, an embodiment of the present application also provides an air purification device, including the air purification module and a fan as described above, wherein the fan is installed on the inner side of the air purification module to guide the air flow from the air intake surface to the exhaust surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present application in any way.

[0021] Figure 1 It is a schematic diagram of the structure of an air purification module provided according to one embodiment of the present application.

[0022] Figure 2 It is a three-dimensional schematic diagram of the structure of a panel group and a short-wave ultraviolet lamp group provided according to an embodiment of the present application.

[0023] Figure 3 1 is a perspective schematic diagram of the structure of an air purification module provided according to another embodiment of the present application.

[0024] Figure 4 It is a side view schematic diagram of the structure of an air purification module provided according to another embodiment of the present application.

[0025] Figure 5 It is a side view schematic diagram of the structure of an air purification device provided according to one embodiment of the present application.

[0026] Reference numerals:

[0027] 100 air purification modules

[0028] 200 First Shell

[0029] 202 closed surface

[0030] 204 air intake surface

[0031] 206 exhaust surface

[0032] 210 Second Shell

[0033] 220 Third Shell

[0034] 230 doors

[0035] 232 Door Sensor

[0036] 300 Panel Group

[0037] 310 First Panel

[0038] 312 Cleaning the filter panel

[0039] 314 First Sensor

[0040] 320 Second Panel

[0041] 322 First Foam Metal Panel

[0042] 324 Second foam metal panel

[0043] 326 Second Sensor

[0044] 330 Third Panel

[0045] 332 Third Foam Metal Panel

[0046] 400 short-wave ultraviolet lamp set

[0047] 500 controller

[0048] 600 DC high voltage generator

[0049] 700 External Power Supply

[0050] 800 Fan DETAILED DESCRIPTION

[0051] To make the purpose, technical solutions and advantages of this application more clear, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other in any way.

[0052] See also Figures 1 to 3 , the following describes a specific configuration of the air purification module 100 in this application according to an embodiment of this application. Figure 1 , Figure 1 It is a schematic diagram of the structure of an air purification module provided according to an embodiment of the present application. Figure 1 The shape of the air purification module 100 is rectangular for illustration purposes only. In fact, the shape and size of the air purification module 100 should be square, rectangular or any other shape according to the actual environment in the air handling unit.

[0053] The air purification module 100 includes: a first housing 200, the first housing 200 including a closed surface 202, an air intake surface 204 and an exhaust surface 206 that allow airflow; a panel assembly 300; a short-wave ultraviolet lamp assembly 400; a controller 500; and a DC high-voltage generator 600. The air intake surface and the exhaust surface may respectively include an air inlet and an air outlet. In one embodiment, the air inlet is provided on the closed surface near the air intake surface. In another embodiment, the air outlet is provided on the closed surface near the exhaust surface. The actual location of the air inlet and outlet depends on the actual environment within the air handling unit or the design requirements of the air purification device.

[0054] The panel assembly 300 includes: a first panel 310, which includes a cleaning filter panel 312; a second panel 320, which includes a first foam metal panel 322 and a second foam metal panel 324 arranged adjacent to each other, the first foam metal panel 322 and the second foam metal panel 324 respectively connected to the positive and negative poles of the high-voltage direct current transmission generator 600; and a third panel 330, which includes a plurality of third foam metal panels 332 with a photocatalyst coating. The first panel 310, the second panel 320, and the third panel 330 are arranged in parallel in a direction from the air intake surface 204 to the exhaust surface 206. Figure 1 The arrows in the figure show the direction of airflow. In one embodiment, the high voltage DC current is 20,000 volts / cm or greater. In one embodiment, the high voltage DC current is 20,000 volts / cm. A distance of at least 150 mm is provided between one or more panels of the panel assembly.

[0055] Continue to see Figure 1 The first housing 200 is a custom-made metal housing whose size and construction must be compatible with the air passage in which it is located. The first housing 200 houses the panel assembly 300 and the short-wave ultraviolet lamp assembly 400. The controller 500 is mounted within a second housing 210, also made of metal, outside the first housing 200. The controller 500 is used to remotely monitor the operation of all sensors within the first housing 200. The DC high-voltage generator 600 is mounted within a third housing 220, also made of metal, outside the first housing 200.

[0056] See also Figure 2 , Figure 2 This is a schematic perspective view of the structure of a panel assembly and short-wave ultraviolet lamp assembly according to one embodiment of the present application. According to one embodiment of the present application, the cleaning filter panel 312 is made of a degradable soft polyurethane low-resilience memory foam. A first sensor 314 is provided on the cleaning filter panel 312 to monitor the cleanliness of the cleaning filter panel 312. This special sensor can issue a warning to maintenance personnel when the cleanliness of the cleaning filter panel 312 drops below a predetermined threshold.

[0057] According to one embodiment of the present application, the first foam metal panel 322 and the second foam metal panel 324 are respectively provided with a second sensor 326, which is used to monitor the voltage applied to the second panel 320, so as to facilitate monitoring the voltage applied to the second panel 320 through the voltage sensor, thereby ensuring that the intensity of the direct current transmission is sufficient to perform the sterilization process.

[0058] Furthermore, the gap between the first and second foam metal panels 322 and 324 should be at least 15 cm, and the outer edges should be securely sealed with insulating material to prevent sparks and the resulting dangers. The gap between the foam metal panels of the present invention allows for the safe use of high voltages (e.g., 20,000 V / cm or higher) to kill germs even in air.

[0059] According to one embodiment of the present application, the photocatalyst layer on the third metal foam panel 332 is a titanium dioxide electroplated layer. Of course, those skilled in the art may also use other suitable photocatalyst materials as an alternative. The photocatalyst layer can directly provide a catalyst for oxidizing air pollutants, thereby improving the purification capacity of the third metal foam panel 332. In one embodiment, the third panel may be one or more high-efficiency particulate air filter (HEPA) panels.

[0060] According to actual needs, each panel or short-wave ultraviolet lamp in the panel group 300 and the short-wave ultraviolet lamp group 400 can be disassembled for regular maintenance and cleaning, or even replaced with a new panel or short-wave ultraviolet lamp.

[0061] See also Figures 3 and 4 , the following describes a specific configuration of the air purification module 100 in this application according to another embodiment of the present application. Figure 4 The arrows in the figure show the direction of airflow. The air purification module 100 includes: a first housing 200, the first housing 200 including a closed surface 202, an air intake surface 204 and an air exhaust surface 206 that allow airflow; a panel assembly 300; a short-wave ultraviolet lamp assembly 400; a controller 500; and a DC high-voltage generator 600. The number and position of the lamp tubes of the short-wave ultraviolet lamp assembly are not limited. The lamp tube of the short-wave ultraviolet lamp assembly of the present application can be one (such as Figure 1 As shown), two or more. Figure 4 and 5 As shown, the short-wave ultraviolet lamp group can be three lamp tubes evenly distributed between the second panel (320) and the third panel (330).

[0062] The panel group 300 includes: a first panel 310, the first panel 310 includes a cleaning filter panel 312; a second panel 320, the second panel 320 includes a first foam metal panel 322 and a second foam metal panel 324 arranged adjacent to each other, the first foam metal panel 322 and the second foam metal panel 324 are respectively connected to the positive and negative poles of the high-voltage direct current transmission generator 600; a third panel 330, the third panel 330 includes a plurality of third foam metal panels 332 with a photocatalyst coating, wherein the first panel 310, the second panel 320 and the third panel 330 are arranged in parallel in sequence along the direction from the air intake surface 204 to the exhaust surface 206.

[0063] See also Figure 3 , Figure 3 This is a perspective diagram of the structure of an air purification module according to another embodiment of the present application. To facilitate understanding of the position and connection relationship of each component in the metal housing, Figure 3The first housing 200, second housing 210, and third housing 220 are all drawn with dotted lines. Each of the three metal housings has a separate door 230, which is used by maintenance personnel to open these metal housings and inspect the panel assembly 300, short-wave ultraviolet lamp assembly 400, controller 500, or DC high-voltage generator 600 therein. The door 230 is also equipped with a door sensor 232 to control and record the movement of the door 230 of the metal housing. In particular, when the door 230 corresponding to the panel assembly 300, short-wave ultraviolet lamp assembly 400, or DC high-voltage generator 600 is opened, the door sensor 232 will instruct the external power supply 700 connected to the air purification module 100 to automatically disconnect, allowing the user or maintenance personnel to safely perform subsequent operations according to the relevant workflow. Conversely, when the door corresponding to the controller 500 is opened, the door sensor 232 will instruct the external power supply 700 connected to the air purification module 100 to continue providing power to the controller 500. In another embodiment of the present application, the panel assembly 300 is configured to include four panels, five panels, or more panels. In one embodiment of the present application, the specific configuration of the panel assembly 300 may be as follows:

[0064] First, a panel 312 in the panel group 300 is a biodegradable soft polyurethane low-resilience memory foam panel, which is used to remove volatile organic compounds and filter out particles with larger diameters. A special sensor is installed to monitor the cleanliness of the panel. The special sensor can issue a warning to notify maintenance personnel when the cleanliness of the panel drops to a predetermined threshold.

[0065] Secondly, the two panels in the panel assembly 300 are a first metal foam panel 322 and a second metal foam panel 324. The edges of the first and second metal foam panels 322, 324 are securely sealed with insulating material. The first and second metal foam panels 322, 324 are connected to a high-voltage DC generator 600. Specifically, the first metal foam panel 322 is connected to the positive terminal of the high-voltage DC generator 600, while the second metal foam panel 324 is connected to the negative terminal of the high-voltage DC generator 600. The high-voltage DC generator 600 is mounted within the second housing 220, outside the first housing 200. Each of the first and second metal foam panels 322, 324 is equipped with a voltage sensor to monitor the voltage applied to the metal foam, thereby ensuring that the DC power transmission is sufficient to perform the sterilization process in an air environment. According to the design of this application, the gap between adjacent first and second metal foam panels 322, 324 should be at least 15 cm, and the outer edges should be securely sealed with insulating material to prevent potential sparks and the resulting dangers.

[0066] Thirdly, one or two panels in the panel assembly 300 are third metal foam panels 332 with a photocatalyst coating. According to embodiments of the present application, the photocatalyst coated on the metal foam panels can be titanium dioxide or other suitable materials. Based on the size of the first housing 200, employing two third metal foam panels 332 with a photocatalyst coating can further enhance the air purification and sterilization capabilities of the third panels 330. In another embodiment, the panel assembly 300 includes one or more high-efficiency air filter panels as the third panels 330.

[0067] According to an embodiment of the present application, the short-wave ultraviolet lamps in the short-wave ultraviolet lamp group 400 can be either traditional short-wave ultraviolet lamps or LED-based short-wave ultraviolet lamp strips, thereby further enhancing the air purification and sterilization capabilities of the third panel 330 .

[0068] In addition, the LED-based short-wave ultraviolet light strip and the foam metal panel 330 with a photocatalyst coating can be used to construct a simple air purification module for installation at the outlet of air ducts in indoor places to provide air sterilization function.

[0069] See also Figure 5 , Figure 5 : is a side view schematic diagram of the structure of an independent air purification device provided according to an embodiment of the present application, wherein: Figure 5 The arrows in show the direction of airflow. According to one embodiment of the present application, there is also provided an air purification device, which includes the above-mentioned air purification module 100 and a fan 800, and the fan 800 is installed at the top of the inner side of the air purification module 100, for guiding the airflow from the air inlet surface 204 at the bottom to the exhaust surface 206 at the top, thereby constituting an air purification device capable of operating independently. The fan 800 can be a phase-changing EC fan or other suitable fan. In this embodiment, when the door 230 corresponding to the panel group 300, the short-wave ultraviolet lamp group 400, the fan 800 or the DC high-voltage generator 600 is opened, the door sensor 232 will instruct the external power supply 700 connected to the air purification module 100 to automatically disconnect, so that the user or the maintainer can safely perform subsequent processing according to the relevant work flow.

[0070] Furthermore, the present application also provides an intelligent indoor air quality (IAQ) monitoring system. This intelligent system includes a network of air purification modules 100 and a sensor network. The air purification modules 100 can be remotely monitored by operating in conjunction with the intelligent sensor network. One embodiment of the present application also integrates the internet, cloud technology, Building Information Modeling (BIM), and the latest digital twin technology to form a remote indoor air quality monitoring system, which provides detailed information on specific locations and indoor air quality.

[0071] Since the entire operation of this application is carried out within the air duct of the air handling unit within the central air conditioning system, it is closely monitored by various sensors to provide intelligent monitoring and operational control. A complete indoor air quality monitoring system consists of two parts: an internal control system and a remote monitoring system. Data and operational monitoring within the indoor control system include, but are not limited to, the following: remote power switch, machine status detector (e.g., power consumption), fan status detector (e.g., air volume), panel cleanliness (checking pressure difference and infrared thermal imaging), sensors for checking temperature and humidity, detectors for checking water leaks, radiometers for checking UV lamp intensity, voltmeters for checking HVDC (High Voltage Direct Current Transmission) discharge intensity, etc. The remote monitoring system is based on the latest indoor air quality targets announced by the Government of the Hong Kong Special Administrative Region of the People's Republic of China on July 1, 2019. In addition to air purification systems, the following parameters should be considered and monitored: carbon dioxide (CO2), carbon monoxide (CO), respirable suspended particulate matter (PM10), nitrogen dioxide (NO2), ozone (O3), formaldehyde (HCHO), total volatile organic compounds (TVOC), and radon (Rn). Airborne bacteria can only be tested in a laboratory, while mold can be assessed through a pre-screening check. The indoor air quality monitoring system integrates with building information modeling and the latest digital twin technology to provide specific location-specific and detailed information on indoor air quality. If any issues are detected, service technicians can immediately conduct an inspection. The indoor air quality monitoring system will integrate internet and cloud technologies, enabling access via mobile phones, allowing all users to access the system anytime, anywhere, without the need for special terminals or devices.

[0072] The above description of exemplary embodiments of the present application has been provided by way of exemplary and non-limiting examples. However, various modifications and adaptations of the above embodiments will be apparent to those skilled in the art, when considered in conjunction with the accompanying drawings and the appended claims, without departing from the scope of the present application. Therefore, the proper scope of the present application will be determined by reference to the appended claims.

Claims

1. An air purification module, used for being arranged in an air passage of an air handling unit of a central air conditioning system, the air purification module (100) comprising: A first housing (200) comprising a closed surface (202), an air intake surface (204) and an air discharge surface (206) opposite to each other for allowing airflow; a panel group (300), the panel group (300) being detachably mounted inside the first housing (200); a short-wave ultraviolet lamp assembly (400), the short-wave ultraviolet lamp assembly (400) being installed inside the first housing (200); a controller (500), the controller (500) being installed in a second housing (210) outside the first housing (200); as well as A DC high-voltage generator (600) is installed in a third housing (220) outside the first housing (200). Characterized in that the panel group (300) comprises: A first panel (310), the first panel (310) including a cleaning filter panel (312); A second panel (320), the second panel (320) comprising a first foam metal panel (322) and a second foam metal panel (324) arranged adjacent to each other, the first foam metal panel (322) and the second foam metal panel (324) being connected to the positive and negative electrodes of the DC high-voltage generator (600), respectively, the DC high-voltage generator generating a high-voltage DC pulse, the high voltage being 20,000 volts or more, the high voltage generating high-frequency vibrations on the first foam metal panel (322) and the second foam metal panel (324), the high-frequency vibrations being used to decompose cells, viruses and harmful gases; A third panel (330), the third panel (330) comprising a plurality of third foam metal panels (332) having a photocatalyst coating, The first panel (310), the second panel (320), and the third panel (330) are sequentially arranged in parallel along a direction from the air intake surface (204) toward the air discharge surface (206), The gap between the first foam metal panel (322) and the second foam metal panel (324) is at least 15 centimeters and the outer edges are firmly sealed with insulating material.

2. An air purification module according to claim 1, characterized in that: The cleaning filter panel (312) is made of degradable soft polyurethane low-resilience memory foam. The cleaning filter panel (312) is provided with a first sensor (314) for monitoring the cleanliness of the cleaning filter panel (312).

3. An air purification module according to claim 1, characterized in that: The short-wave ultraviolet lamp assembly (400) comprises one or more short-wave ultraviolet lamps arranged between the second panel (320) and the third panel (330).

4. An air purification module according to claim 1, characterized in that: The short-wave ultraviolet lamp assembly (400) comprises one or more LED-based short-wave ultraviolet lamp strips arranged between the second panel (320) and the third panel (330).

5. An air purification module according to claim 1, characterized in that: The first foam metal panel (322) and the second foam metal panel (324) are respectively provided with a second sensor (326), and the second sensor (326) is used to monitor the voltage applied to the second panel (320).

6. An air purification module according to claim 1, characterized in that: The photocatalyst layer on the third foam metal panel (332) is a titanium dioxide electroplating layer.

7. An air purification module according to claim 1, characterized in that: The air purification module (100) is connected to an external power source (700).

8. An air purification module according to claim 7, characterized in that: The first housing (200), the second housing (210) and the third housing (220) respectively include a door (230) and a door sensor (232) provided on the door (230), wherein the door sensor (232) is connected to the external power supply (700) and is used for instructing the external power supply (700) to supply power to the first housing (200), the second housing (210) and the third housing (220) when the door (230) is opened.

9. An air purification module according to claim 1, characterized in that: The plurality of third foam metal panels (332) with photocatalyst coatings of the third panel (330) are replaced by one or more high efficiency air filtration (HEPA) panels.

10. An air purification device comprising: The air purification module (100) according to any one of claims 1 to 9; and the electrically controlled fan (800), characterized in that the electrically controlled fan (800) is installed on the inner side of the air purification module (100) and is used to guide the air flow from the air inlet surface (204) to the exhaust surface (206).

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