Purification assembly and air purifier

Abstract

The present disclosure provides a purification assembly and an air purifier. The purification assembly comprises a physical purification component, a photocatalytic component and a light source component. The photocatalytic component has a first side and a second side in the thickness direction thereof. The physical purification component is arranged on the first side and / or the second side of the photocatalytic component. A plurality of first through holes are arranged on the photocatalytic component to allow fluid to flow from the first side to the second side of the photocatalytic component. The light source component is configured to provide a light source to irradiate the photocatalytic component. The present embodiment can make the air fully contact with the photocatalytic component, and improve the gaseous pollutant purification efficiency and the photocatalytic effect.

Description

Technical Field

[0001] This disclosure belongs to the field of purification technology, and specifically relates to a purification component and an air purifier. Background Technology

[0002] As people strive to improve their quality of life, indoor air pollutants such as formaldehyde and odorous gases have attracted widespread attention. However, purification equipment using this technology, which relies on gas adsorption, suffers from poor purification efficiency. While some purification devices employ photocatalysis, insufficient contact between the gas and the catalyst leads to low purification efficiency for gaseous pollutants and poor photocatalytic effects. Summary of the Invention

[0003] This disclosure aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, embodiments of this disclosure propose a purification component with good photocatalytic effect and high purification efficiency.

[0005] Embodiments of this disclosure provide an air purifier.

[0006] The purification component of this disclosure includes: Physical purification components; A photocatalytic component having a first side and a second side in its thickness direction, a physical purification component disposed on the first side and / or the second side of the photocatalytic component, and a plurality of first through holes provided on the photocatalytic component to allow fluid to flow from the first side to the second side of the photocatalytic component; A light source component, which provides a light source to illuminate the photocatalytic component.

[0007] In this embodiment, the photocatalytic component is provided with multiple first through holes, allowing air to flow smoothly from the first side to the second side of the photocatalytic component. This ensures sufficient contact between the air and the surface of the photocatalytic component, enabling uniform airflow. During this process, the air can uniformly and stably contact the reactive oxygen species with bactericidal capabilities generated on the photocatalytic component after light irradiation, avoiding the problem of inconsistent air purification effects in different areas. This embodiment's dual purification mode overcomes the shortcomings of simple physical filtration and adsorption purification. It utilizes physical purification adsorption to remove impurities, and photocatalytic purification for deep decomposition and purification, thereby significantly improving the overall purification effect. The design of the first through holes in this embodiment solves the problems in related technologies where the photocatalytic component obstructs gas flow and some air is too far from the component to be fully purified. Therefore, this embodiment ensures sufficient contact between the air and the photocatalytic component, addressing the pain point of insufficient contact between the gas and the photocatalytic component, and improving the purification efficiency and photocatalytic effect of gaseous pollutants.

[0008] In some embodiments, a reflective component is further included, wherein one of the light source component and the reflective component is disposed on a first side of the photocatalytic component, and the other of the light source component and the reflective component is disposed on a second side of the photocatalytic component, and the reflective component is used to reflect light toward the photocatalytic component.

[0009] This embodiment achieves secondary utilization of light through a reflective component, significantly improving light utilization efficiency and solving the problems of low light utilization and poor photocatalytic effect in related photocatalytic technologies. Both sides of the photocatalytic component receive sufficient light, stimulating more photocatalytic reactions and further improving the purification efficiency of gaseous pollutants, ensuring purification effect and a superior user experience. This embodiment achieves dual optimization of the "flow field-light field" through the stacked arrangement of the reflective and photocatalytic components. The reflective component is located on the air inlet side, utilizing its reflective properties to increase the light flux density on the surface of the photocatalytic component. Furthermore, its through-hole structure rectifyes and turbulents the airflow, extending the residence time of pollutants in the photoreaction zone and increasing the probability of contact reaction.

[0010] In some embodiments, the reflective component is provided with a plurality of second through holes to allow fluid to flow through the reflective component; when the reflective component is arranged in the airflow path, the second through holes on the reflective component can ensure that air flows smoothly through the reflective component, avoid the reflective component from obstructing gas flow, and further improve the sufficient contact between the gas and the photocatalytic component.

[0011] And / or, the reflective component is a reflective coating or a reflective film; the reflective coating or reflective film has good reflective properties, can efficiently reflect light, and is small in size and light in weight, which better fits the compact design of the purification components, can improve the flexibility of the reflective component arrangement, and facilitates the arrangement.

[0012] And / or, the reflective component is disposed on the surface of the physical purification component facing the photocatalytic component; integrating the reflective component onto the surface of the physical purification component facing the photocatalytic component eliminates the need for additional installation space and substrate, simplifying the layout structure, ensuring that reflected light can accurately illuminate the photocatalytic component, and maximizing space utilization. In this case, when the reflective coating is applied to the physical purification component, the through-holes on the physical purification component can be used as a second through-hole, resulting in excellent practicality.

[0013] And / or, the distance between the reflective component and the photocatalytic component is 0mm to 50mm. This embodiment, by controlling the distance between the reflective component and the photocatalytic component, ensures that the reflected light acts efficiently on the photocatalytic component, avoids light attenuation due to excessive distance, and allows sufficient space for gas flow. This ensures light utilization and gas flow, thereby further improving the photocatalytic effect and purification efficiency.

[0014] In some embodiments, the light source component is disposed on a first side and / or a second side of the photocatalytic component; the light source component in this embodiment can be arranged on one or both sides of the photocatalytic component. When arranged on one side, the structure is simple and the cost is low, and the number of lamps in the light source component is relatively small. When arranged on both sides, both sides of the photocatalytic component can be sufficiently illuminated, thereby improving the photocatalytic effect.

[0015] And / or, the distance between the light source component and the photocatalytic component is 5mm to 100mm. This embodiment, by controlling the distance between the light source component and the photocatalytic component, avoids problems such as excessive light concentration, excessively high local temperatures damaging components, and an excessive number of lamps caused by too small a distance, while also avoiding problems such as light attenuation and insufficient illumination caused by too large a distance. This ensures the stable occurrence of the photocatalytic reaction on the photocatalytic component, maintains the number of reactive oxygen free radicals, and improves the purification effect.

[0016] In some embodiments, the photocatalytic component includes a substrate and a photocatalytic layer, the photocatalytic layer being disposed on the surface of the substrate, and the first through-hole being disposed on the substrate. In this embodiment, the photocatalytic layer can cover the substrate surface, better increasing the contact area between the gas and the photocatalytic layer, solving the problem of insufficient contact between the gas and the catalyst, improving the photocatalytic effect and purification efficiency. Furthermore, the substrate can be designed with different structures according to requirements, improving the adaptability of the purification component.

[0017] In some embodiments, the substrate has a protruding surface and / or a concave surface, and the photocatalytic layer is disposed on the protruding surface and / or the concave surface. This creates both protruding and concave surfaces, increasing the coverage area of ​​the photocatalytic layer, ensuring the amount of reactive oxygen species generated under light irradiation, and improving the air purification effect.

[0018] In some embodiments, the photocatalytic component has a thickness of 10 mm to 50 mm. By controlling the thickness of the photocatalytic component, this embodiment can ensure that the photocatalytic component has sufficient surface area for gas contact and photocatalytic reaction, while avoiding excessive thickness that would hinder gas flow, increase component volume, or affect the illumination angle. This ensures efficient and stable operation of the purification component and improves the purification efficiency of gaseous pollutants.

[0019] And / or, at least a portion of the substrate is deformed to form the protruding surface on one side of the substrate in the thickness direction and the concave surface on the other side of the substrate in the thickness direction. The substrate in this embodiment can be a sheet, and the substrate can be partially deformed by stamping to form a structure with one side protruding and the other side concave. This eliminates the need for additional components, simplifies the processing technology, and increases the surface area.

[0020] And / or, the protruding surface and / or the concave surface are curved surfaces; the curved protruding surface and concave surface can increase the contact area, facilitate the smooth flow of gas, avoid gas stagnation on the surface, and better receive light.

[0021] And / or, the light source component is disposed on the side of the substrate facing the protruding surface; with the light source component disposed on the protruding surface, the light can be more evenly irradiated onto the photocatalytic layer of the protruding surface, thereby improving the light utilization rate.

[0022] And / or, the protruding surface is an arc surface, and the distance between the light source component and the protruding surface is 0.8 to 1.2 times the radius of the protruding surface; this can ensure that the light is better distributed and illuminates all parts of the arc surface, achieving uniform illumination, improving the photocatalytic effect, and allowing for better compatibility with the protruding surface when arranging the lamp body in the light source component.

[0023] And / or, the thickness of the substrate is 0.05 mm to 2 mm, and the substrate is a 10-mesh to 200-mesh mesh. This facilitates processing and manufacturing while ensuring structural strength and reducing material costs. The first through-holes on the substrate can be evenly distributed, and by controlling the proportion of the first through-holes, the contact between the gas and the photocatalytic layer can be further improved.

[0024] In some embodiments, the light source component includes multiple lamp bodies arranged spaced apart from each other. This embodiment allows for flexible adjustment of the number and spacing of the lamp bodies based on the size of the photocatalytic component, the form of its protruding and concave surfaces, etc., thereby better adapting to different structural requirements and ensuring the continuous and stable occurrence of the photocatalytic reaction.

[0025] In some embodiments, the plurality of lamp bodies and the photocatalytic component are arranged opposite to each other in the thickness direction of the photocatalytic component; thereby, the spacing between the lamp bodies and the photocatalytic component can be more stable, the illumination consistency can be better, and the photocatalytic reaction in different regions of the photocatalytic component can be well consistent.

[0026] And / or, the wavelength of the irradiated light in some of the multiple lamp bodies is different from the wavelength of the irradiated light in others; the lamp bodies with different wavelengths work together to adapt to the photoresponse characteristics of the photocatalytic layer, and the light of different wavelengths can excite the photocatalytic layer to undergo different photocatalytic reactions, thereby improving the ability to decompose different gaseous pollutants.

[0027] And / or, the wavelength of the irradiation light from the lamp body is 265nm to 410nm; the wavelength of the lamp body is controlled within the range of 265nm to 410nm, which is a more efficient response wavelength for photocatalytic reactions, which can efficiently excite the photocatalytic layer and improve the photocatalytic effect.

[0028] And / or, multiple lamp bodies are arranged in an array; And / or, at least some of the plurality of lamp bodies are arranged in parallel; And / or, at least some of the plurality of lamp bodies are connected in series.

[0029] The lamps in this embodiment can be connected in parallel, series, or mixed ways. Parallel connection ensures that the failure of a single lamp does not affect the operation of other lamps, while series connection makes it easier to control the overall brightness and power of the lamps and adapt to different purification needs.

[0030] In some embodiments, at least a portion of the plurality of lamp bodies is configured as a first lamp group, wherein the wavelength of the irradiated light from the first lamp group is greater than 315 nm and less than or equal to 400 nm. Light in this wavelength band can efficiently excite the photocatalytic layer to undergo a photocatalytic reaction, and the light has moderate penetrating power, allowing it to fully act on the surface of the photocatalytic layer. In this embodiment, the first lamp group can be used as the core of the light source component, providing the main illumination for the photocatalytic reaction and ensuring stable photocatalytic effects.

[0031] In some embodiments, a portion of the plurality of lamp bodies is configured as a second lamp group and a third lamp group, wherein the wavelength of the illumination light of the second lamp group is greater than 400 nm and less than or equal to 410 nm, and the wavelength of the illumination light of the third lamp group is greater than or equal to 265 nm and less than or equal to 315 nm.

[0032] The second and third lamp groups work in conjunction with the first lamp group. The light from the second lamp group helps to excite the photocatalytic layer, improving the efficiency of the photocatalytic reaction, and can also decompose some pollutants that are not easily decomposed by the light from the first lamp group. The light from the third lamp group has stronger bactericidal and disinfection capabilities, killing bacteria and viruses in the air while purifying gaseous pollutants, achieving multi-functional purification. By using a specific wavelength combination of light sources in conjunction with a hydrophobic molecular sieve carrier, a self-regenerating cycle mechanism of "adsorption-enrichment-degradation" is formed, effectively solving the problems of catalyst deactivation in high humidity environments and the easy saturation of single adsorbent materials.

[0033] In some embodiments, the number of lamp bodies in the first lamp group accounts for 60% to 100% of the total number of lamp bodies in the light source component, the number of lamp bodies in the second lamp group accounts for 0% to 20% of the total number of lamp bodies in the light source component, and the number of lamp bodies in the third lamp group accounts for 0% to 20% of the total number of lamp bodies in the light source component.

[0034] This embodiment can optimize the photocatalytic effect, overall purification capacity, and energy consumption by using a reasonable ratio of lamps. It avoids problems such as poor photocatalytic effect due to insufficient number of core lamps or increased energy consumption due to excessive number of auxiliary lamps. This embodiment has a flexible ratio range to adapt to different purification scenarios and improve the adaptability of purification components.

[0035] In some embodiments, the physical purification component includes a filter layer and / or an adsorption layer, wherein the filter layer is used to filter particulate matter and the adsorption layer is used to adsorb gaseous pollutants.

[0036] In this embodiment, the filter layer and the adsorption layer work together to protect the photocatalytic layer, prevent particulate matter from blocking light and clogging the first pore, ensure stable operation of the photocatalytic component, improve overall purification efficiency, better remove indoor pollutants, and provide a better user experience.

[0037] In some embodiments, the adsorption layer includes at least one of a particulate adsorption layer and a honeycomb adsorption layer; the particulate adsorption layer has a large adsorption capacity and is easy to replace, while the honeycomb adsorption layer has low gas flow resistance and a large contact area. In application, the particulate adsorption layer and the honeycomb adsorption layer can be used alone or in combination, which can more flexibly adapt to different purification needs and has good practicality.

[0038] And / or, the distance between the filter layer and the adsorption layer is 0 to 50 mm; this allows air to quickly enter the adsorption layer after filtration, avoiding gas diffusion and pollutant escape due to excessive spacing, while also preventing gas flow obstruction due to insufficient spacing, ensuring smooth airflow. When the distance is 0 mm, the two layers are in contact, and gas flows through their respective through-holes; when the distance is greater than 0 mm, the gap forms an auxiliary airflow channel. Limiting the distance within this range ensures that reflected light acts efficiently on the photocatalytic component (avoiding light attenuation due to excessive spacing) while reserving sufficient space for gas flow, thus balancing light utilization efficiency and airflow permeability, reducing wind resistance, and improving photocatalytic effect and purification efficiency.

[0039] And / or, the adsorption layer comprises a hydrophobic molecular sieve, the hydrophobic molecular sieve having a dynamic adsorption capacity for water molecules of 0.5 to 8 wt%, and the specific surface area of ​​the hydrophobic molecular sieve being greater than or equal to 350. The hydrophobic molecular sieve has a pore size of 0.3 nm to 2.0 nm. This embodiment can avoid the adsorbent from being affected by moisture, extend the service life of the adsorption layer, ensure stable physical purification effect, and further improve the overall purification efficiency.

[0040] In some embodiments, the physical purification component and the photocatalytic component are plate-shaped, and the physical purification component and the photocatalytic component are stacked; or... The physical purification component and the photocatalytic component are cylindrical and are sleeved together.

[0041] The purification components in this embodiment can be arranged in different ways to adapt to different installation spaces and purification requirements. When the physical purification components and photocatalytic components are arranged in a flat, stacked manner, the structure is simple, the processing and installation are convenient, and air can pass vertically through each layer of components, achieving continuous physical purification and photocatalytic purification with sufficient contact.

[0042] The air purifier of this embodiment includes the purification component described in any of the above embodiments. The beneficial effects achieved by the air purifier of this embodiment are the same as those achieved by the purification components of the above embodiments, and therefore will not be described again. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a purification component according to an embodiment of the present disclosure.

[0044] Figure 2 This is a schematic diagram of a purification component according to another embodiment of the present disclosure.

[0045] Figure 3 This is a schematic diagram of a photocatalytic component according to an embodiment of the present disclosure.

[0046] Figure 4 This is a schematic diagram showing the arrangement of the light source component and the photocatalytic component according to an embodiment of this disclosure.

[0047] Figure 5 This is a schematic diagram of the adsorption layer according to an embodiment of the present disclosure.

[0048] Figure 6 This is a schematic diagram of a light source component according to an embodiment of the present disclosure.

[0049] Figure 7 This is a schematic diagram of a purification component according to yet another embodiment of this disclosure.

[0050] Figure 8 This is a schematic diagram of a photocatalytic component according to yet another embodiment of this disclosure.

[0051] Figure 9 This is a schematic diagram of a purification component according to another embodiment of the present disclosure.

[0052] Figure 10 This is a schematic diagram of a purification component according to another embodiment of the present disclosure.

[0053] Figure 11 This is a graph showing the test results of the purification component of this embodiment on TVOCs.

[0054] Figure 12 This is a graph showing the test results of the purification component of this embodiment on formaldehyde.

[0055] Figure label: 100. Purification components; 1. Physical purification components; 11. Filter layer; 12. Adsorption layer; 2. Photocatalytic component; 21. Concave surface; 22. Protruding surface; 3. Light source components; 31. Lamp body; 4. Reflective components. Detailed Implementation

[0056] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0057] See Figures 1 to 10 The purification component 100 of this embodiment includes a physical purification component 1, a photocatalytic component 2, and a light source component 3. The purification component 100 of this embodiment can be applied to air purification and water purification. The following description uses air purification as an example.

[0058] The photocatalytic component 2 has a first side and a second side in its thickness direction. The physical purification component 1 is disposed on the first side and / or the second side of the photocatalytic component 2. The photocatalytic component 2 is provided with a plurality of first through holes so that fluid can flow from the first side to the second side of the photocatalytic component 2. The light source component 3 is used to provide a light source to irradiate the photocatalytic component 2.

[0059] The purification component 100 of this embodiment can employ both physical purification and photocatalytic purification to achieve purification operations. This enables graded and efficient purification of indoor air, improving purification effect and efficiency, and providing a superior user experience. The physical purification component 1 of this embodiment can be arranged on one or both sides of the photocatalytic component 2. For example, the incoming air can be physically purified first (e.g., filtering particulate matter, adsorbing gaseous pollutants) to initially remove pollutants, and then photocatalytic purification can be performed. Alternatively, the air can be photocatalytically purified first, followed by physical purification. Furthermore, physical purification components 1 can be arranged on both sides of the photocatalytic component 2 in the thickness direction, allowing for physical air purification operations both before and after photocatalytic purification.

[0060] In this embodiment, the photocatalytic component 2 is provided with multiple first through holes, allowing air to flow smoothly from the first side to the second side of the photocatalytic component 2. This ensures that the air is in full contact with the surface of the photocatalytic component 2, enabling the air to flow evenly through the photocatalytic component 2. During this process, the air can come into uniform and stable contact with the active oxygen free radicals with bactericidal capabilities generated on the photocatalytic component 2 after being exposed to light, thus avoiding the problem of inconsistent air purification effects in different areas.

[0061] In this embodiment, the first through-hole on the photocatalytic component 2 can be a tiny micropore. Without affecting airflow, the pore size of the micropore can be reduced and the number of micropores can be increased. This allows multiple micropores to be more evenly distributed on the photocatalytic component 2. When air flows through the photocatalytic component 2, it can be more evenly dispersed, ensuring that reactive oxygen free radicals generated at different locations on the photocatalytic component 2 can come into uniform contact with the air in the corresponding area. This allows reactive oxygen free radicals to be more evenly dispersed into the air flowing through the photocatalytic component 2, ensuring the effectiveness and consistency of air purification treatment.

[0062] In the figure, direction A can be the thickness direction of the photocatalytic component 2, or the direction in which air flows through the photocatalytic component 2 and the physical purification component 1.

[0063] In this embodiment, the light source component 3 provides suitable illumination to irradiate the photocatalytic component 2, thereby stimulating a photocatalytic reaction. The generated reactive oxygen free radicals can directly destroy substances such as bacteria / viruses and decompose them into organic matter, ultimately generating carbon dioxide and water, thus achieving deep purification.

[0064] The dual purification mode of this embodiment can compensate for the poor purification effect of simple physical filtration and adsorption. This embodiment can use physical purification to adsorb impurities and photocatalytic purification to deeply decompose and purify, thereby greatly improving the overall purification effect. The design of the first through hole in this embodiment can solve the problems in related technologies where the photocatalytic component 2 obstructs gas flow and some air is too far away from the photocatalytic component 2 to be fully purified. Therefore, this embodiment can ensure that the air and the photocatalytic component 2 are in full contact, solve the pain point of insufficient contact between the gas and the photocatalytic component 2, and improve the purification efficiency and photocatalytic effect of gaseous pollutants.

[0065] The overall structure of this embodiment is reasonable, and the air flow is smooth, which can be adapted to the use needs of air purifiers, thereby removing indoor pollutants such as formaldehyde and odors more efficiently and providing a better user experience.

[0066] See Figure 2 , Figure 7 and Figure 10 In some embodiments, the purification component 100 further includes a reflective component 4, one of the light source component 3 and the reflective component 4 is disposed on the first side of the photocatalytic component 2, and the other of the light source component 3 and the reflective component 4 is disposed on the second side of the photocatalytic component 2. The reflective component 4 is used to reflect light toward the photocatalytic component 2.

[0067] In this embodiment, the light source component 3 and the reflector component 4 can be arranged on both sides of the photocatalytic component 2 in the thickness direction, thereby forming a lighting structure in which light is emitted from one side and reflected from the other side. The light emitted by the light source component 3 directly illuminates one side of the photocatalytic component 2. The light that is not absorbed by the photocatalytic component 2, after propagating through the first through-hole to the other side of the photocatalytic component 2, can be reflected back to the photocatalytic component 2 by the reflector component 4, realizing the secondary utilization of light and improving the light utilization rate.

[0068] In this embodiment, the gas can pass through the first through hole of the photocatalytic component 2 and flow smoothly in the space on both sides without affecting the air purification. When the light source component 3 irradiates one side of the photocatalytic component 2, reactive oxygen free radicals can be generated. The other side of the photocatalytic component 2 can also generate reactive oxygen free radicals when irradiated by the light reflected back from the reflective component 4. This can improve the efficiency and effect of the catalytic reaction and improve the air purification effect.

[0069] When air passes through the first through-hole into the photocatalytic component 2, it can cause turbulent airflow in the space on both sides of the photocatalytic component 2, thereby improving the mixing and contact effect of free radicals and air and enhancing the purification effect.

[0070] This embodiment achieves secondary utilization of light through reflective component 4, which greatly improves the utilization rate of light and solves the problems of low light utilization and poor photocatalytic effect in related technologies. Both sides of the photocatalytic component 2 can be fully illuminated, which can stimulate more photocatalytic reactions, further improve the purification efficiency of gaseous pollutants, ensure the purification effect, and provide a good user experience.

[0071] In this embodiment, the reflective surface of the reflective component 4 can be roughly parallel to the photocatalytic component 2, and the light source component 3 can also be roughly parallel to the photocatalytic component 2, so that the illumination conditions received by different areas on the photocatalytic component 2 are consistent.

[0072] This embodiment achieves dual optimization of the "flow field and light field" through the stacked arrangement of the reflective component and the photocatalytic component. The reflective component is set on the air intake side. On the one hand, its reflective properties increase the light flux density on the surface of the photocatalytic component. On the other hand, its through-hole structure rectifyes and disturbs the airflow, thereby extending the residence time of pollutants in the photoreaction zone and increasing the probability of contact reaction.

[0073] In some embodiments, the reflective component 4 is provided with a plurality of second through holes to allow fluid to flow through it. When the reflective component 4 is arranged in the path of airflow, the second through holes on the reflective component 4 can ensure that air flows smoothly through it, preventing the reflective component 4 from obstructing gas flow and further improving the sufficient contact between the gas and the photocatalytic component 2.

[0074] When the reflective component 4 is arranged at one end of the air flow path, the second through hole does not need to be provided on the reflective component 4. In this case, the reflective component 4 can act as a baffle to guide the air to flow out laterally. It can not only reflect light, but also guide the flow.

[0075] The reflective component 4 in this embodiment has a reflective surface that can reflect light.

[0076] In some embodiments, the reflective component 4 is a reflective coating or a reflective film. The reflective coating or reflective film has good reflective properties, can efficiently reflect light, and is small in size and light in weight, which better fits the compact design of the purification component 100, can improve the flexibility of the arrangement of the reflective component 4, and facilitates its placement.

[0077] When the reflective component 4 is a reflective coating layer, it can be coated on a substrate. The substrate can be a separately set component, or it can be the physical purification component 1, or part of the housing in an air purifier, etc.

[0078] See Figure 2 , Figure 5 , Figure 7 and Figure 10 Furthermore, the reflective component 4 is disposed on the surface of the physical purification component 1 facing the photocatalytic component 2. Integrating the reflective component 4 onto the surface of the physical purification component 1 facing the photocatalytic component 2 eliminates the need for additional installation space and a substrate, simplifying the layout structure and ensuring that reflected light can accurately illuminate the photocatalytic component 2, resulting in high space utilization. In this case, when the reflective coating is applied to the physical purification component 1, the through-holes on the physical purification component 1 can be used as a second through-hole, offering excellent practicality.

[0079] When the reflective component 4 is a reflective film, the reflective film can be attached to the substrate, the physical purification component 1, or the housing of the air purifier. When gas needs to flow through the reflective film, a second through hole can be opened on the reflective film.

[0080] In some embodiments, the distance between the reflective component 4 and the photocatalytic component 2 is 0 mm to 50 mm. For example, the distance between the reflective component 4 and the photocatalytic component 2 is 5 mm, 8.5 mm, 15 mm, 20 mm, 25 mm, 30 mm, 44 mm, or 50 mm. As another example, if the portion of the photocatalytic component 2 facing the reflective component 4 is protruding or recessed, the reflective component 4 can be in contact with the photocatalytic component 2 and still achieve the effect of reflecting light.

[0081] This embodiment, by controlling the distance between the reflective component 4 and the photocatalytic component 2, can ensure that the reflected light acts efficiently on the photocatalytic component 2, avoid light attenuation due to excessive distance, and reserve sufficient space for gas flow, thereby ensuring light utilization and gas flow, and further improving the photocatalytic effect and purification efficiency.

[0082] In some embodiments, the light source component 3 is disposed on the first side and / or the second side of the photocatalytic component 2. In this embodiment, the light source component 3 can be arranged on one or both sides of the photocatalytic component 2. A single-sided arrangement results in a simple structure, low cost, and a relatively small number of lamp bodies 31 in the light source component 3. A double-sided arrangement allows both sides of the photocatalytic component 2 to receive sufficient illumination, improving the photocatalytic effect.

[0083] When the light source component 3 is arranged on one side of the photocatalytic component 2, the light source component 3 and the physical purification component 1 can be arranged on the same side of the photocatalytic component 2, or the light source component 3 and the physical purification component 1 can be arranged on opposite sides of the photocatalytic component 2. Simultaneously, a reflective component 4 can be arranged to improve light utilization efficiency using the reflective component 4 and the light source component 3.

[0084] See Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 9 and Figure 10 In some embodiments, the distance between the light source component 3 and the photocatalytic component 2 is 5mm to 100mm. The distance between the light source component 3 and the photocatalytic component 2 is 5mm, 10mm, 15mm, 35mm, 50mm, 66mm, 80mm, 89mm or 100mm. By controlling the distance between the light source component 3 and the photocatalytic component 2, this embodiment can avoid problems such as excessive light concentration, excessive local temperature damaging the components, and excessive number of lamp bodies 31 caused by too small a distance, and avoid problems such as light attenuation and insufficient illumination caused by too large a distance. This ensures that the photocatalytic reaction on the photocatalytic component 2 occurs stably, ensures the number of reactive oxygen free radicals, and improves the purification effect.

[0085] In some embodiments, the photocatalytic component 2 includes a substrate and a photocatalytic layer, the photocatalytic layer being disposed on the surface of the substrate, and a first through hole being disposed on the substrate.

[0086] In this embodiment, the substrate serves as the carrier for the photocatalytic layer. A first through-hole is formed on the substrate to ensure that gas can pass smoothly through the photocatalytic component 2. The photocatalytic layer can be coated or deposited on the substrate surface. When the light source component 3 irradiates, the photocatalytic layer is excited, and a photocatalytic reaction occurs, thereby generating reactive oxygen free radicals to decompose gaseous pollutants. In this embodiment, the photocatalytic layer can cover the substrate surface, which better increases the contact area between the gas and the photocatalytic layer, solves the problem of insufficient contact between the gas and the catalyst, and improves the photocatalytic effect and purification efficiency. The substrate can also be designed with different structures according to requirements to improve the adaptability of the purification component 100.

[0087] For example, the substrate can be W-shaped, M-shaped, or an arc shape with multiple arrays arranged, which can increase the surface area of ​​the substrate and increase the coating area of ​​the photocatalytic layer.

[0088] See Figures 1-4 , Figures 7-10 In some embodiments, the substrate has a protruding surface 22 and / or a concave surface 21, and the photocatalytic layer is disposed on the protruding surface 22 and / or the concave surface 21. This creates both protruding and concave surfaces, increasing the coverage area of ​​the photocatalytic layer, ensuring the amount of reactive oxygen species generated under light irradiation, and improving the air purification effect.

[0089] The design of the protruding surface 22 and the concave surface 21 in this embodiment increases the effective contact area of ​​the photocatalytic layer, prolongs the contact time between the gas and the catalyst, further solves the problem of insufficient contact between the gas and the catalyst, improves the photocatalytic effect and the purification efficiency of gaseous pollutants. At the same time, the protruding surface 22 and the concave surface 21 can guide the gas flow, make the gas converge and disperse, and make the mixing of gas and reactive oxygen free radicals more uniform, resulting in a more uniform and stable purification effect.

[0090] In some embodiments, the photocatalytic component 2 has a thickness dimension of 10 mm to 50 mm. Specifically, the thickness dimension of the photocatalytic component 2 is 10 mm, 16 mm, 20 mm, 26 mm, 30 mm, 44 mm, or 50 mm. This embodiment, by controlling the thickness of the photocatalytic component 2, ensures that the component has sufficient surface area for gas contact and photocatalytic reaction, while avoiding excessive thickness that could obstruct gas flow, increase component volume, or affect the illumination angle. This ensures the efficient and stable operation of the purification component 100 and improves the purification efficiency of gaseous pollutants.

[0091] In some embodiments, at least a portion of the substrate is deformed to form a protruding surface 22 on one side of the substrate in the thickness direction and a concave surface 21 on the other side of the substrate in the thickness direction. The substrate in this embodiment can be sheet-like, and the substrate can be partially deformed by stamping to form a structure with one side protruding and the other side concave, without the need for additional components, simplifying the processing technology and increasing the surface area.

[0092] See Figures 1-4 , Figures 7-10 In some embodiments, the protruding surface 22 and / or the concave surface 21 are curved surfaces. The curved protruding surface 22 and the concave surface 21 can increase the contact area, facilitate the smooth flow of gas, prevent gas from stagnating on the surface, and allow for better light reception.

[0093] See Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 9 In some embodiments, the light source component 3 is disposed on the side of the substrate facing the protruding surface 22. With the light source component 3 disposed on the protruding surface 22, light can be more evenly irradiated onto the photocatalytic layer of the protruding surface 22, improving light utilization. This embodiment can increase the frontal contact area between light and the catalyst, enhance the energy of the light source reaching the surface of the photocatalytic layer, and thus excite more catalytic sites. The light reflected back by the reflector component 4 is more easily collected and utilized by the recessed inner surface 21.

[0094] See Figure 3 and Figure 4 Furthermore, the protruding surface 22 is an arc surface, and the distance L between the light source component 3 and the protruding surface 22 is 0.8 to 1.2 times the radius R of the protruding surface 22. The distance between the protruding surface 22 and the light source component 3 is controlled at 0.8, 0.9, 1, 1.15 or 1.2 times the radius of the arc surface, which can ensure that the light is better distributed and illuminates all parts of the arc surface, achieving uniform illumination, improving the photocatalytic effect, and making the lamp body 31 in the light source component 3 more compatible with the protruding surface 22.

[0095] For example, if the illumination angle of a single lamp body 31 in the light source component 3 is 60 degrees to 120 degrees, the effective pairing of the lamp body 31 and the arc surface can be achieved by controlling the radius of the arc surface and the distance between the light source component 3 and the arc surface. This facilitates the arrangement of the relative positions of the lamp body 31 and the arc surface, improves the utilization rate of light, and enhances the catalytic reaction effect of the photocatalytic component 2.

[0096] When the distance between the light source component 3 and the protruding surface 22 is too large or too small, it will affect the arrangement of the lamp body 31, making it impossible to form an array arrangement. This increases the difficulty of arranging multiple lamp bodies 31 in the light source component 3, resulting in poor consistency of catalytic reaction in different regions of the photocatalytic component 2.

[0097] In some embodiments, the substrate thickness is 0.05 mm to 2 mm, and the substrate is a 10-mesh to 200-mesh mesh. The substrate can be a metal mesh, such as a porous stainless steel mesh. In this embodiment, the substrate thickness is controlled at 0.05 mm, 0.1 mm, 0.18 mm, 0.5 mm, 1 mm, 1.35 mm, or 2 mm, which facilitates processing and manufacturing while ensuring structural strength and reducing material costs. The first through-holes on the substrate can be evenly distributed. By controlling the proportion of the first through-holes, the contact between the gas and the photocatalytic layer can be further improved.

[0098] The substrate deformation process in this embodiment is simple and low-cost, and the curved structure increases the contact area and gas flow. The optimized arrangement and spacing of the light source achieve uniform illumination and improve the photocatalytic effect. The control of the mesh substrate and thickness can better ensure smooth gas flow and uniform contact, improve purification efficiency, and make the purification component 100 lightweight and compact.

[0099] The photocatalytic layer of this embodiment may include at least one of graphitic carbon nitride, nano-titanium dioxide, and nano-tin dioxide. It can be prepared into an active sol and directly loaded onto the substrate (metal mesh) by spraying or roller coating to form a composite photocatalytic component 2.

[0100] By utilizing the transport and separation of photogenerated carriers among the composite semiconductors of graphitic carbon nitride, nano-titanium dioxide, and nano-tin dioxide, the performance of the composite photocatalyst film for gas-phase photocatalytic oxidation of indoor VOCs, formaldehyde, etc., is greatly improved.

[0101] The nanocrystals in the photocatalytic layer are 3–15 nm in size. Because the nanoparticles are small and have abundant hydroxyl groups, they can easily form strong bonds on the solid surface of the metal mesh and will not be washed away by airflow or water flow.

[0102] See Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 9 and Figure 10 In some embodiments, the light source component 3 includes a plurality of lamp bodies 31, which are arranged spaced apart from each other.

[0103] In this embodiment, the light source component 3 consists of multiple spaced lamps. These lamps 31 work together to emit light onto the photocatalytic component 2. This embodiment allows for more uniform light coverage of the entire surface of the photocatalytic component 2 by adjusting the spacing of the lamps 31, thus avoiding uneven photocatalytic effects caused by insufficient localized illumination. Furthermore, this embodiment allows for flexible adjustment of the number and spacing of the lamps 31 based on the size of the photocatalytic component 2, the form of its protruding surface 22 and concave surface 21, etc., thereby better adapting to different structural requirements and ensuring the continuous and stable occurrence of the photocatalytic reaction.

[0104] See Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 9 and Figure 10 In some embodiments, multiple lamp bodies 31 and photocatalytic components 2 are arranged opposite each other in the thickness direction of the photocatalytic component 2. This makes the spacing between the lamp bodies 31 and the photocatalytic component 2 more stable, improves the consistency of illumination, and ensures good consistency of photocatalytic reaction in different regions of the photocatalytic component 2.

[0105] In some embodiments, the wavelength of the irradiated light from a portion of the plurality of lamps 31 is different from the wavelength of the irradiated light from another portion. The lamps 31 with different wavelengths work together to adapt to the photoresponse characteristics of the photocatalytic layer. Light of different wavelengths can excite the photocatalytic layer to undergo different photocatalytic reactions, thereby enhancing the ability to decompose different gaseous pollutants.

[0106] In some embodiments, the wavelength of the illumination light emitted by the lamp body 31 is between 265 nm and 410 nm. The wavelength of the lamp body 31 is controlled within the range of 265 nm to 410 nm, which is a more efficient response wavelength for photocatalytic reactions, and can efficiently excite the photocatalytic layer and improve the photocatalytic effect.

[0107] See Figure 6 In some embodiments, multiple lamps 31 are arranged in an array, with at least some of the lamps 31 connected in parallel or in series. The multiple lamps 31 can be arranged in a rectangular or circular array, thereby further improving the uniformity of illumination and ensuring that every area on the surface of the photocatalytic component 2 receives sufficient light. In this embodiment, the lamps 31 can be connected in parallel, series, or a hybrid manner. Parallel connection ensures that damage to a single lamp 31 does not affect the operation of other lamps 31, while series connection facilitates control of the overall brightness and power of the lamps 31, adapting to different purification needs.

[0108] For example, some of the lamp bodies 31 are connected in series to form a series lamp group, and multiple series lamp groups are arranged side by side to form a light source component 3. When there are 81 lamp bodies 31, 9 lamp bodies 31 are connected in series to form a series lamp group, and the 9 series lamp groups can be connected in parallel to form a light source component 3 containing 81 lamp bodies 31.

[0109] In the light source component 3 of this embodiment, visible light and ultraviolet light diodes (LEDs) can be arranged in an array.

[0110] Based on the absorption spectra of graphitic carbon nitride, nano-titanium dioxide, and nano-tin dioxide for ultraviolet-visible light, it can be seen that graphitic carbon nitride has a band gap of approximately 2.7 eV. Under sunlight irradiation, valence band electrons transition, forming electron-hole pairs and further generating active particles. Anatase titanium dioxide, on the other hand, has a band gap of 3.2 eV, corresponding to an absorption wavelength threshold of approximately 387 nm (ultraviolet region). When the incident light wavelength is ≤387 nm, valence band electrons are excited to the conduction band, generating electron-hole pairs and initiating a photocatalytic reaction.

[0111] In some embodiments, at least a portion of the plurality of lamp bodies 31 are configured as a first lamp group, wherein the wavelength of the irradiated light of the first lamp group is greater than 315 nm and less than or equal to 400 nm.

[0112] In this embodiment, the wavelength of the first lamp group is controlled at 315-400nm. The light in this band can efficiently excite the photocatalytic layer to undergo a photocatalytic reaction, and the light penetration is moderate, which can fully act on the surface of the photocatalytic layer. In this embodiment, the first lamp group can be used as the core of the light source component 3 to provide the main illumination for the photocatalytic reaction and ensure the stability of the photocatalytic effect.

[0113] This embodiment improves the photoresponse efficiency of the photocatalytic layer by more precise wavelength selection, thereby enhancing the photocatalytic effect and the purification efficiency of gaseous pollutants. This embodiment can ensure photocatalytic efficiency and safety of use, better adapt to indoor air purification scenarios, avoid the harm of short-wave ultraviolet light to the human body, and at the same time ensure the efficient decomposition of gaseous pollutants.

[0114] Furthermore, the multiple lamp bodies 31 are partially constructed as a second lamp group and a third lamp group. The wavelength of the illumination light of the second lamp group is greater than 400nm and less than or equal to 410nm, and the wavelength of the illumination light of the third lamp group is greater than or equal to 265nm and less than or equal to 315nm.

[0115] The second and third lamp groups work in conjunction with the first lamp group. The light from the second lamp group helps to excite the photocatalytic layer, improving the efficiency of the photocatalytic reaction, and can also decompose some pollutants that are not easily decomposed by the light from the first lamp group. The light from the third lamp group has stronger bactericidal and disinfection capabilities, killing bacteria and viruses in the air while purifying gaseous pollutants, achieving multi-functional purification. By using a specific wavelength combination of light sources in conjunction with a hydrophobic molecular sieve carrier, a self-regenerating cycle mechanism of "adsorption-enrichment-degradation" is formed, effectively solving the problems of catalyst deactivation in high humidity environments and the easy saturation of single adsorbent materials.

[0116] In this embodiment, the three sets of lamps 31 work together to cover different wavelength ranges and adapt to different purification needs. The combination of multiple lamp sets can better realize photocatalytic purification, decomposition of gaseous pollutants, sterilization and disinfection, etc., improve the comprehensive purification capacity of the purification component 100, and solve the problem of single purification and poor effect of photocatalytic technology in related technologies, so as to meet diversified needs in the process of indoor air purification.

[0117] In some embodiments, the number of lamp bodies 31 in the first lamp group accounts for 60% to 100% of the total number of lamp bodies 31 in the light source component 3, the number of lamp bodies 31 in the second lamp group accounts for 0% to 20% of the total number of lamp bodies 31 in the light source component 3, and the number of lamp bodies 31 in the third lamp group accounts for 0% to 20% of the total number of lamp bodies 31 in the light source component 3.

[0118] This embodiment controls the proportion of each lamp group, with the first lamp group as the core lamp group to ensure the main light requirements of the photocatalytic reaction and ensure the efficient decomposition of gaseous pollutants; the second and third lamp groups serve as auxiliary lamp groups, and their numbers can be flexibly adjusted according to actual purification needs, without occupying too much space and power of the light source component 3, thereby improving the overall purification capacity while reducing energy consumption.

[0119] This embodiment can optimize the photocatalytic effect, overall purification capacity, and energy consumption by using a reasonable ratio of the number of lamps 31. It avoids problems such as poor photocatalytic effect due to insufficient number of core lamps 31, or increased energy consumption due to excessive number of auxiliary lamps 31. This embodiment has a flexible ratio range to adapt to different purification scenarios and improve the adaptability of the purification component 100. For example, in scenarios with high formaldehyde concentration, the number of the first lamp group can be increased. In other words, in scenarios with a lot of bacteria, the number of the third lamp group can be appropriately increased.

[0120] See Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 9 and Figure 10In some embodiments, the physical purification component 1 includes a filter layer 11 and / or an adsorption layer 12, wherein the filter layer 11 is used to filter particulate matter and the adsorption layer 12 is used to adsorb gaseous pollutants.

[0121] The physical purification component 1 in this embodiment may include a filter layer 11, an adsorption layer 12, or both, thereby working in conjunction with the photocatalytic component 2 to achieve staged purification. The filter layer 11 can intercept particulate matter (such as PM2.5, dust, pollen, etc.) in the air, preventing particulate matter from covering the photocatalytic layer and affecting the photocatalytic effect. The adsorption layer 12 adsorbs gaseous pollutants (such as formaldehyde, odors, etc.) in the air, initially removing pollutants and reducing the purification pressure on the photocatalytic component 2. At the same time, it adsorbs trace pollutants that have not been decomposed by photocatalysis, achieving multiple protections.

[0122] In this embodiment, the filter layer 11 and the adsorption layer 12 work together to protect the photocatalytic layer, prevent particulate matter from blocking light and clogging the first through hole, ensure the stable operation of the photocatalytic component 2, improve the overall purification efficiency, better remove indoor pollutants, and provide a better user experience.

[0123] The filter layer 11 can be made of high-efficiency air microparticle filter material, which is used to filter dust, fine particulate matter, animal hair and other particles in the air to be purified, to meet the air purification needs, and can also protect the cleanliness of other components and increase the service life of the photocatalytic component 2.

[0124] For example, when selecting filtration efficiency, for particles with a diameter of 0.3 micrometers, the filtration efficiency needs to be ≥85%.

[0125] In some embodiments, the adsorption layer 12 includes at least one of a particulate adsorption layer 12 and a honeycomb adsorption layer 12. The particulate adsorption layer 12 has a large adsorption capacity and is easy to replace, while the honeycomb adsorption layer 12 has low gas flow resistance and a large contact area. In applications, the particulate adsorption layer 12 and the honeycomb adsorption layer 12 can be used alone or in combination, thereby providing greater flexibility to meet different purification needs and offering good practicality.

[0126] Furthermore, the distance between the filter layer 11 and the adsorption layer 12 is 0 to 50 mm. The distance between the filter layer 11 and the adsorption layer 12 can be 5 mm, 10 mm, 16 mm, 20 mm, 26 mm, 30 mm, 44 mm or 50 mm. This allows air to quickly enter the adsorption layer 12 after filtration, avoiding excessively large distances that could lead to gas diffusion and pollutant escape, while also avoiding excessively small distances that could obstruct airflow, thus ensuring smooth airflow.

[0127] When the gap is 0mm, the two parts fit together, and the gas flows through their respective through holes; when the gap is greater than 0mm, the gap forms an auxiliary airflow channel. Limiting the gap within this range ensures that the reflected light acts efficiently on the photocatalytic component (avoiding light attenuation due to excessive gap) while reserving sufficient space for gas flow, thus balancing light utilization efficiency and airflow, reducing wind resistance, and improving photocatalytic effect and purification efficiency.

[0128] In some embodiments, the adsorption layer 12 includes a hydrophobic molecular sieve, the hydrophobic molecular sieve having a dynamic adsorption capacity for water molecules of 0.5 to 8 wt%, and a specific surface area of ​​350 nm or greater. The pore size of the hydrophobic molecular sieve is from 0.3 nm to 2.0 nm.

[0129] The hydrophobic molecular sieve of this embodiment exhibits excellent hydrophobic properties and a low adsorption capacity for water molecules (0.5-8 wt%), preventing water molecules from occupying adsorption sites and ensuring effective adsorption of gaseous pollutants. The specific surface area of ​​the hydrophobic molecular sieve is greater than or equal to 350 nm. This increases the adsorption area, thereby improving adsorption capacity and efficiency. This embodiment avoids the adsorbent becoming damp, thus extending the lifespan of the adsorption layer, ensuring stable physical purification, and further enhancing overall purification efficiency.

[0130] Furthermore, the particulate adsorption layer 12 may include activated carbon particles, molecular sieve particles, etc. The particle size of the activated carbon particles and molecular sieve particles is 0.5 mm to 3 mm. The honeycomb adsorption layer 12 may include activated carbon honeycomb, molecular sieve honeycomb, cordierite honeycomb, glass fiber honeycomb, etc. The mesh size of the honeycomb adsorption layer 12 can be 100 mesh to 400 mesh, for example, 100 mesh, 150 mesh, 255 mesh, 300 mesh, or 400 mesh. The appropriate mesh size can be selected based on the structure of the air purifier and the application scenario.

[0131] The adsorption layer 12 is used to quickly remove gaseous pollutants. A reflective coating layer or a reflective porous film can be provided on the surface of the material facing the light source component 3, thereby constructing a reflective component 4. This component can reflect the ultraviolet light that passes through the photocatalytic component 2 onto the photocatalytic component 2, thereby improving the light utilization efficiency and thus enhancing the purification effect.

[0132] The adsorption layer 12 includes activated carbon with a specific surface area greater than or equal to 500 and a carbon tetrachloride adsorption value of not less than 75%, thereby ensuring sufficient adsorption area and improving adsorption volume and adsorption efficiency.

[0133] The particulate or honeycomb adsorbent material in this embodiment can be modified to support an active manganese metal catalyst. On the one hand, it can adsorb large VOCs molecules and rapidly degrade them, providing instantaneous purification efficiency; on the other hand, it can catalytically decompose small formaldehyde molecules.

[0134] In application, some air pollutants are adsorbed by the adsorption layer 12, while others are not adsorbed due to insufficient residence time. The concentration of unadsorbed pollutants is reduced, increasing the photocatalytic treatment effect. Under the action of the photocatalytic component 2 and the photocatalytic layer, they undergo catalytic decomposition after irradiation, ultimately achieving harmless treatment, such as generating carbon dioxide and water, thus improving the purification effect.

[0135] When air passes through the photocatalytic component 2 and then the adsorption layer 12, the adsorption capacity will decrease after a period of use because the adsorption material has a certain saturation. The photocatalytic component 2 can remove most pollutants, while the adsorption material will handle a lower concentration, thereby extending the service life of the adsorption material, reducing the frequency of replacement, and achieving better synergistic effect.

[0136] See Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 9 and Figure 10 In some embodiments, the physical purification component 1 and the photocatalytic component 2 are flat plates, stacked together, or cylindrical, with the physical purification component 1 and the photocatalytic component 2 nested together.

[0137] The purification components in this embodiment can be arranged in different ways to adapt to different installation spaces and purification requirements. For example... Figure 1 and Figure 2 When the physical purification component 1 and the photocatalytic component 2 are arranged in a flat, stacked manner, the structure is simple, the processing and installation are convenient, and air can pass vertically through each layer of components, so as to realize the continuous physical purification and photocatalytic purification and sufficient contact.

[0138] like Figure 7 , Figure 9 and Figure 10 As shown, when the physical purification component 1 and the photocatalytic component 2 are arranged in a cylindrical sleeve, air can flow radially along the cylindrical structure, increasing the contact area between the gas and the component, extending the contact time, and saving installation space. This allows for better adaptation to the compact design of small air purifiers, improving gas flow and purification efficiency.

[0139] For example, see Figure 9 and Figure 10 Both the physical purification component 1 and the photocatalytic component 2 are cylindrical in shape. For example, see [link to example]. Figure 7 Both the physical purification component 1 and the photocatalytic component 2 are rectangular cylindrical. Alternatively, both the physical purification component 1 and the photocatalytic component 2 may be hexagonal cylindrical.

[0140] Accordingly, the arrangement of the light source component 3 and the reflector component 4 in this embodiment is adapted to the form of the physical purification component 1 and the photocatalytic component 2. For example, when the physical purification component 1 and the photocatalytic component 2 are cylindrical, the multiple lamp bodies 31 in the light source component 3 can be arranged in a cylindrical trajectory, and the reflector component 4 can be cylindrical.

[0141] The purification component 100 in this embodiment is easy to process and install, easy to mass-produce, low in cost, highly integrated, and has a wide range of practical applications.

[0142] The air purifier of this embodiment includes the purification component 100 of any of the above embodiments. The beneficial effects achieved by the air purifier of this embodiment are the same as those achieved by the purification component 100 of the above embodiments, and therefore will not be described again.

[0143] The air purifier in this embodiment uses the above-mentioned purification component 100 as the core purification component. Indoor air can be drawn into the purifier through components such as a fan. The air can first pass through the physical purification component 1 to filter particulate matter and adsorb gaseous pollutants, completing the initial purification. Then the air passes through the photocatalytic component 2 and comes into full contact with the photocatalytic layer. The light source component 3 provides suitable illumination to stimulate the photocatalytic reaction and deeply decompose the gaseous pollutants. The purified air is then discharged through the air outlet, realizing the circulation and purification of indoor air.

[0144] The purification component 100 in the air purifier of this embodiment has a compact structure and smooth gas flow, which meets the miniaturization and high efficiency design requirements of air purifiers, improves indoor air quality, and meets users' needs for a high-quality life.

[0145] In one specific embodiment, the purification component 100 includes a filter layer 11, an adsorption layer 12, a reflective component 4, a photocatalytic component 2, and a light source component 3. The length and width of each component are generally consistent. The filter layer 11 is adjacent to the adsorption layer 12, and the two are in close contact. The reflective component 4 is formed on the surface of the adsorption layer 12 facing the photocatalytic component 2, and there is a certain distance between the reflective component 4 and the photocatalytic component 2, which can be 0 to 50 mm. There is also a certain distance between the photocatalytic component 2 and the light source component 3, which is 5 mm to 100 mm. In this embodiment, the purification component 100 can be assembled into a single module using the same housing, or each component can be used as a separate module, which can then be combined to form a single purification component 100. The air to be purified can pass vertically through the purification component 100 sequentially, achieving efficient purification of pollutants such as formaldehyde, TVOCs, bacteria, and viruses.

[0146] The filter layer 11 can be made of conventional HEPA material, folded into a W or M shape, with a particulate filtration level of 99.5%; the adsorption layer 12 includes a honeycomb adsorbent with a porous structure, and a reflective porous film (i.e., reflective component 4) is coated on one side of the honeycomb adsorbent; the photocatalytic component 2 includes a stainless steel wire mesh of a certain mesh size as a substrate and a nano-film photocatalytic layer composed of graphitic carbon nitride, nano-titanium dioxide, and nano-tin dioxide attached to the substrate. The substrate can be a whole sheet of stainless steel wire mesh stamped into a semi-cylindrical mesh by a mold; the light source component 3 consists of multiple LEDs of different wavelengths arranged in a certain distribution to form a light source array.

[0147] The preparation methods for the adsorption layer and reflective components are as follows: Molecular sieve honeycomb is selected. First, ZSM-5 and Y-type molecular sieves are mixed in a certain proportion, then extruded under high pressure, and subsequently dried, baked, calcined, and cut. The cut product size can be 100mm. 100mm A 25mm molecular sieve honeycomb with a pore density of 200 mesh is used. Then, a slurry containing ZnO nanocrystals is uniformly coated onto one end of the molecular sieve honeycomb pores using high-pressure spraying or roller coating to form a photonic crystal film. The thickness of the coating is controlled to not exceed 0.5cm, and then it is dried at room temperature. During installation, the side coated with the photonic crystal film faces the photocatalytic component. The method for spraying reflective layers for other activated carbon honeycomb, cordierite honeycomb, and fiberglass honeycomb is the same. If a granular adsorption layer is selected, a reflective porous film can be configured, such as using a reflective aluminum substrate or reflective tape.

[0148] The preparation method of the photocatalytic component is as follows: First, select a 100-mesh 304 stainless steel wire mesh, treat it with 0.01 mol / L organic acid, and clean it with deionized water for later use. Then, prepare a mixed slurry containing one or more nano-sized graphitic carbon nitride, nano-titanium dioxide, and nano-tin dioxide in a certain proportion, using water as a diluent. Apply the prepared slurry evenly to the treated 304 stainless steel wire mesh using high-pressure spraying or roller coating, and dry it at 150 to 200 degrees Celsius for 20 to 60 minutes. Then, cut it to the required size as needed, place it on a pre-designed mold such as a semi-circle, W-shape, or M-shape, and fold it under high pressure to prepare the desired shape.

[0149] The light source components are arranged as follows: the lamp board material can be an aluminum substrate. When using 81 LEDs, the connection method is 9 in series and 9 in parallel. Selected wavelength: 265nm-380nm, voltage: 3.0-4.0V, maximum current: 150MA, beam angle: 120 degrees, optical power: 100-150mW.

[0150] The purification component was then tested in a 30-cubic-meter test chamber, equipped with a variable frequency fan to adjust the airflow. Initially, a mixed solution containing nine TVOCs (toluene, toluene, n-butyl acetate, ethylbenzene, m-xylene, p-xylene, styrene, o-xylene, and n-undecane) was introduced to an initial concentration of 6.0 ± 1.2 mg / m³. The relative humidity inside the test chamber was controlled at (50 ± 5)%, and the ambient temperature at 23 ± 2℃. Other methods followed the relevant standards of GB18801. The airflow after loading the photocatalytic air purification module onto the fan was 400 Nm³ / h. Other tests, such as those for formaldehyde, were conducted using the same method.

[0151] The overall dimensions of the purification unit are 320 mm in length. 320 width The device is 270mm high, with a HEPA filter layer having a filtration area of ​​2.0 square meters and a filtration efficiency of 85%. The adsorption layer is 25mm thick, using molecular sieve honeycomb with a ZSM-5 to Y-type ratio of 5:1. The reflective component is coated with a 3mm thick ZnO nanocrystalline film. The photocatalytic component uses a 100-mesh stainless steel wire mesh, folded into a W-shape with a 2cm edge height. The photocatalytic layer contains graphitic carbon nitride, nano-titanium dioxide, and nano-tin dioxide with a particle size of 2-30nm, in a mass ratio of 1:8:2, and is loaded onto the treated stainless steel wire mesh using a roller coating method, with a coating amount of 20g photocatalyst per square meter. The distance between the photocatalytic component and the reflective component is 2cm. The light source component uses an aluminum substrate, with 100 LEDs connected in a series configuration of 10 series and 10 parallel. The selected LEDs have a wavelength ratio of 5:5:80:10 (265nm:275nm:365nm:405nm). Individual LED voltage is 3.0-4.0V, maximum current is 150mA, beam angle is 120 degrees, and optical power is 100-150mW. The photocatalytic element is 3cm away from the light source.

[0152] Figure 11 These are the test results for 9 types of TVOCs. Figure 12 These are the test results for formaldehyde removal, from... Figure 11 and Figure 12 It can be seen that the purification components disclosed herein all have a high efficiency in removing TVOCs and formaldehyde.

[0153] The following experiments on the purification components are based on multiple embodiments, and are illustrated through different experimental backgrounds, experimental conditions, and experimental data.

[0154] The following description is based on Examples 1 to 5: 1. Experimental background and conditions.

[0155] Test environment: Tested in accordance with relevant standards, including a constant temperature and humidity sealed test chamber (30m³) with a temperature of 25±2℃ and a relative humidity of 50±5%.

[0156] Pollution source configuration: Initial formaldehyde concentration: 1.0±0.20 mg / m³. Initial TVOC concentration: 6.0±1.2 mg / m³ (containing 9 mixed gases including benzene, toluene, and xylene).

[0157] Initial concentration of pathogenic microorganisms: 2.5 × 10⁻⁶ 6 CFU / m³ (Staphylococcus aureus).

[0158] Testing equipment: UV-Vis spectrophotometer (UV-1900i for formaldehyde testing), high-precision GC-MS (for TVOC testing), CO2 detector (for recording mineralized products), and anemometer (for recording air outlet velocity and calculating air resistance).

[0159] 2. Specific scheme and parameter settings for the implementation example.

[0160] This set of examples mainly examines the effects of the spacing between the reflective and photocatalytic components, the aperture diameter, and the light source ratio on the purification effect. Specific parameter configurations are shown in the table below:

[0161] 3. Performance test results and analysis.

[0162] 3.1 Purification efficiency and mineralization rate test.

[0163] To verify that the present invention is a "true degradation" rather than a simple physical adsorption, the residual concentration of pollutants and the increase in CO2 concentration were tested after 2 hours.

[0164]

[0165] Example 2 showed a higher removal rate and a greater CO2 generation, with a calculated mineralization rate as high as 85.3%. This indicates that most of the carbon elements in the pollutant molecules were completely oxidized into CO2, rather than simply adsorbed in the pores of the molecular sieve, further demonstrating the high efficiency of the photocatalytic reaction.

[0166] 3.2 Long-term stability test.

[0167] For scenarios involving long-term use of air purifiers, a 24-hour continuous operation test was conducted to observe the trend of removal rate changes over time, in order to verify the self-regeneration balance capability of the hydrophobic molecular sieve in "adsorption-degradation".

[0168] Test conditions: A standard formaldehyde pollution source is injected every 2 hours to maintain the initial concentration level. After 24 hours of continuous operation, the final removal rate in the chamber is tested.

[0169]

[0170] Examples 1-5 showed minimal removal rate decay (all <3%) after 24 hours of continuous operation, indicating that the photocatalytic reaction continuously consumed the pollutants adsorbed on the molecular sieve surface, releasing adsorption sites and achieving "dynamic regeneration." Comparative Example 2 (using ordinary activated carbon as a carrier), although initially showing a high removal rate (strong physical adsorption), rapidly failed after 24 hours, with the removal rate plummeting to 42.3%, indicating that its adsorption sites were saturated with pollutants and could not be degraded. The hydrophobic molecular sieve carrier of this invention has significant advantages.

[0171] 3.3 Wind resistance and energy efficiency analysis.

[0172] Whether the addition of reflective components will significantly increase wind resistance is a key indicator for evaluating practicality.

[0173]

[0174] Although Example 2 increased wind resistance (by only 4%), its clean air delivery rate (CADR) and energy efficiency ratio actually reached better values ​​due to the significant improvement in purification efficiency. Example 4 suffered from decreased light utilization due to excessive spacing and reflection interference due to excessive aperture, resulting in a decline in overall performance.

[0175] 4. Conclusion of the Example.

[0176] Based on the above experimental data, we can conclude that: Significant structural advantages: Example 2 adopts a reflective component design with a spacing of 5mm and an aperture of 2.0mm, which achieves higher purification efficiency and mineralization rate under the premise of controllable increase in wind resistance.

[0177] True degradation characteristics: The high CO2 increment and 85.3% mineralization rate of Example 2 directly prove that the present invention utilizes photocatalytic reaction to degrade pollutants, rather than simple physical adsorption, thus avoiding the risk of secondary release.

[0178] Long-lasting anti-aging properties: Thanks to the synergistic effect of the hydrophobic molecular sieve carrier and the specific light source, Example 2 exhibits excellent stability during 24-hour continuous operation, solving the industry pain point of easy saturation of traditional adsorption materials.

[0179] To further verify the effectiveness of the technical solution of this invention, the applicant has set up the following comparative examples: Comparative Example 1: The reflective component was removed, and only the photocatalytic component and the light source component were retained. The rest of the structure was the same as in Example 2.

[0180] Test results: Under the same test conditions, the formaldehyde removal rate of Comparative Example 1 was 65%, which was significantly lower than the 98.6% of Example 2.

[0181] Conclusion: This demonstrates that the placement of reflective components is not merely a simple matter of positional superposition; the resulting optical reflection gain and airflow disturbance significantly improve purification efficiency.

[0182] Comparative Example 2: Ordinary activated carbon was used as the carrier, with the remaining structure the same as in Example 2. Although the initial removal rate was high (strong physical adsorption) when using ordinary activated carbon as the carrier, it rapidly became ineffective after 24 hours, with the removal rate dropping to 42.3%, indicating that its adsorption sites were saturated with pollutants and could not be degraded. The hydrophobic molecular sieve carrier of this invention has significant advantages.

[0183] Comparative Example 3: Only a single wavelength 365nm light source was used, the removal rate combination was not adjusted, and the rest of the structure was the same as in Example 2.

[0184] Test results: The total VOCs removal rate of Comparative Example 3 was 70%, and the mineralization of some recalcitrant organic matter was incomplete.

[0185] Conclusion: This invention demonstrates that the use of a multi-wavelength combined light source (265nm / 275nm / 365nm / 405nm) can achieve complementary advantages, with short-wave sterilization and long-wave degradation working synergistically to significantly improve the overall purification effect.

[0186] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0187] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0188] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0189] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0190] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0191] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A purification component (100), characterized in that, include: Physical purification component (1); A photocatalytic component (2) has a first side and a second side in its thickness direction. A physical purification component (1) is disposed on the first side and / or the second side of the photocatalytic component (2). The photocatalytic component (2) is provided with a plurality of first through holes so that fluid can flow from the first side to the second side of the photocatalytic component (2). A light source component (3) is used to provide a light source to illuminate the photocatalytic component (2).

2. The purification component (100) according to claim 1, characterized in that, It also includes a reflective component (4), one of the light source component (3) and the reflective component (4) is disposed on the first side of the photocatalytic component (2), and the other of the light source component (3) and the reflective component (4) is disposed on the second side of the photocatalytic component (2), and the reflective component (4) is used to reflect light toward the photocatalytic component (2).

3. The purification component (100) according to claim 2, characterized in that, The reflective component (4) is provided with a plurality of second through holes to allow fluid to flow through the reflective component (4); and / or, The reflective component (4) is a reflective coating or a reflective film; and / or, The reflective component (4) is disposed on the surface of the physical purification component (1) facing the photocatalytic component (2); and / or, The distance between the reflective component (4) and the photocatalytic component (2) is 0 mm to 50 mm.

4. The purification component (100) according to claim 1, characterized in that, The light source component (3) is disposed on the first side and / or the second side of the photocatalytic component (2); and / or, The distance between the light source component (3) and the photocatalytic component (2) is 5 mm to 100 mm.

5. The purification component (100) according to claim 1, characterized in that, The photocatalytic component (2) includes a substrate and a photocatalytic layer, the photocatalytic layer being disposed on the surface of the substrate, and the first through hole being disposed on the substrate.

6. The purification component (100) according to claim 5, characterized in that, The substrate has a protruding surface (22) and / or a concave surface (21), and the photocatalytic layer is disposed on the protruding surface (22) and / or the concave surface (21).

7. The purification component (100) according to claim 6, characterized in that, The photocatalytic component (2) has a thickness of 10 mm to 50 mm; and / or, At least a portion of the substrate is deformed to form the protruding surface (22) on one side of the substrate in the thickness direction and the concave surface (21) on the other side of the substrate in the thickness direction; and / or, The protruding surface (22) and / or the concave surface (21) are curved surfaces; and / or, The light source component (3) is disposed on the side of the substrate facing the protruding surface (22); and / or, The protruding surface (22) is an arc surface, and the distance between the light source component (3) and the protruding surface (22) is 0.8 to 1.2 times the radius of the protruding surface (22); and / or, The thickness of the substrate is 0.05 mm to 2 mm, and the substrate is a 10-mesh to 200-mesh mesh.

8. The purification component (100) according to claim 1, characterized in that, The light source component (3) includes a plurality of lamp bodies (31), which are arranged spaced apart from each other.

9. The purification component (100) according to claim 8, characterized in that, The plurality of lamp bodies (31) are disposed opposite to the photocatalytic component (2) in the thickness direction of the photocatalytic component (2); and / or, The wavelength of the irradiated light from a portion of the plurality of lamp bodies (31) is different from the wavelength of the irradiated light from another portion; and / or, The wavelength of the light emitted by the lamp body (31) is from 265 nm to 410 nm; and / or, Multiple lamp bodies (31) are arranged in an array; and / or, At least some of the plurality of lamp bodies (31) are arranged in parallel; and / or, At least some of the multiple lamp bodies (31) are connected in series.

10. The purification component (100) according to claim 9, characterized in that, At least a portion of the plurality of lamp bodies (31) is configured as a first lamp group, wherein the wavelength of the irradiated light of the first lamp group is greater than 315 nm and less than or equal to 400 nm.

11. The purification component (100) according to claim 10, characterized in that, The plurality of lamp bodies (31) are partially constructed as a second lamp group and a third lamp group, wherein the wavelength of the irradiated light of the second lamp group is greater than 400nm and less than or equal to 410nm, and the wavelength of the irradiated light of the third lamp group is greater than or equal to 265nm and less than or equal to 315nm.

12. The purification component (100) according to claim 11, characterized in that, The number of lamp bodies (31) in the first lamp group accounts for 60% to 100% of the total number of lamp bodies (31) in the light source component (3), the number of lamp bodies (31) in the second lamp group accounts for 0% to 20% of the total number of lamp bodies (31) in the light source component (3), and the number of lamp bodies (31) in the third lamp group accounts for 0% to 20% of the total number of lamp bodies (31) in the light source component (3).

13. The purification component (100) according to any one of claims 1 to 12, characterized in that, The physical purification component (1) includes a filter layer (11) and / or an adsorption layer (12), wherein the filter layer (11) is used to filter particulate matter and the adsorption layer (12) is used to adsorb gaseous pollutants.

14. The purification component (100) according to claim 13, characterized in that, The adsorption layer (12) includes at least one of a particulate adsorption layer and a honeycomb adsorption layer; and / or, The distance between the filter layer (11) and the adsorption layer (12) is 0 to 50 mm; and / or, The adsorption layer (12) includes a hydrophobic molecular sieve, the hydrophobic molecular sieve having a dynamic adsorption capacity for water molecules of 0.5 to 8 wt%, and the specific surface area of ​​the hydrophobic molecular sieve being greater than or equal to 350. The hydrophobic molecular sieve has a pore size of 0.3 nm to 2.0 nm.

15. The purification component (100) according to any one of claims 1 to 12, characterized in that, The physical purification component (1) and the photocatalytic component (2) are flat plates, and are stacked together; or, The physical purification component (1) and the photocatalytic component (2) are cylindrical and are connected together.

16. An air purifier, characterized in that, Includes the purification component (100) according to any one of claims 1 to 15.

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