Photocatalyst composite filter element structure
By combining a spiral airflow channel and an array of ultraviolet lamp beads, the problem of low photocatalytic reaction efficiency in traditional photocatalytic composite filters is solved, achieving a more efficient air purification effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU IND PARK ANZEWEN ENVIRONMENTAL PROTECTION TECH
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-05
AI Technical Summary
The layered structure of traditional photocatalytic composite filters limits the depth and breadth of contact between pollutants and photocatalysts, resulting in low photocatalytic reaction efficiency, and the problem of light blocking seriously affects the activity of photocatalysts.
The design employs a spiral airflow channel, combined with an array of ultraviolet lamp beads and a reflective film, to increase the number of light sources and irradiation points. The spiral airflow channel is formed by a guide plate, which improves the contact area between air and photocatalyst and the light intensity.
It improves the efficiency of photocatalysts in decomposing pollutants and increases the air travel distance through the filter element, achieving a more efficient air purification effect.
Smart Images

Figure CN224321192U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a filter element structure, and more particularly to a photocatalytic composite filter element structure, belonging to air filter element technology. Background Technology
[0002] Air filters are key components for air purification, widely used in various air purification equipment, automotive engines, industrial ventilation systems, and other fields. They are typically composed of multiple layers of filter media with different filtration properties, effectively intercepting pollutants such as dust, pollen, smoke, bacteria, viruses, and harmful gases in the air. Photocatalytic composite filters are an innovative type of air purification filter. They combine photocatalytic materials with other high-efficiency filter materials. Under light, the photocatalyst catalyzes the decomposition of harmful gases such as formaldehyde and benzene, while the other filter media intercept particulate pollutants, achieving multiple purification processes to effectively improve air quality and protect respiratory health.
[0003] Traditional photocatalytic composite filter cartridges mostly employ a layered structure, with each layer of filter material simply stacked. For photocatalysis to function effectively, it requires sufficient contact and reaction with pollutants in the air. The layered structure limits the depth and breadth of this contact, reducing the efficiency of pollutant adsorption and decomposition. Simultaneously, because the filter materials are stacked layer by layer, light is blocked during penetration. Since the catalytic reaction of photocatalysis is highly dependent on light, insufficient light directly inhibits its activity, failing to effectively stimulate the photocatalytic reaction and hindering the sustained and efficient decomposition of harmful gases. Therefore, a new photocatalytic composite filter cartridge structure is proposed. Utility Model Content
[0004] In view of this, the present invention provides a photocatalytic composite filter structure to solve or alleviate one of the technical problems existing in the prior art, and at least provides a beneficial option.
[0005] The technical solution of this utility model embodiment is implemented as follows: a photocatalytic composite filter structure includes a main component, which includes a shell, a connecting plate, an air outlet, a reflective film, a guide plate, a light-transmitting tube, a support column, and ultraviolet lamp beads;
[0006] The outer side wall of the housing is symmetrically fixedly connected with connecting plates. An air outlet is provided at the top of the housing. A reflective film is fixedly connected to the inner side wall of the housing. A guide plate is fixedly connected to the inner side wall of the housing. The surface of the guide plate is coated with a titanium dioxide coating. A light-transmitting tube is fixedly connected inside the guide plate. The guide plate is spirally arranged along the outer side wall of the light-transmitting tube, forming a spiral airflow channel between the guide plates. A support column is fixedly connected to the inner side wall of the light-transmitting tube. Ultraviolet lamp beads are evenly installed on the outer side wall of the support column. Air enters the housing and, under the action of the guide plate, spirals upward along the airflow channel. During the upward movement, the ultraviolet lamp array excites the titanium dioxide coating for photodecomposition, while the reflective film reflects the light, improving the decomposition efficiency. The spiral airflow channel formed by the guide plate increases the travel distance of the air through the filter element, improving the purification effect. The purified air is then sent out through the air outlet.
[0007] A further preferred embodiment: a filter assembly is provided at the bottom of the main body component, the filter assembly including a first mounting ring, a fixing plate, and a second mounting ring;
[0008] A fixing plate is fixedly connected to the bottom of the first mounting ring, and a second mounting ring is fixedly connected to the bottom of the fixing plate.
[0009] A further preferred embodiment: the inner wall of the second mounting ring is detachably connected to a filter screen.
[0010] A further preferred embodiment: one side of the fixing plate is fixedly connected to a bracket by bolts.
[0011] A further preferred embodiment: the inner wall of the support is provided with an activated carbon filter layer.
[0012] A further preferred embodiment: the bracket is disposed between the first mounting ring and the second mounting ring.
[0013] A further preferred embodiment has threaded holes symmetrically formed at the top of the first mounting ring.
[0014] A further preferred embodiment: the first mounting ring is fixedly connected to the bottom of the connecting plate by bolts.
[0015] The present invention has the following advantages due to the adoption of the above technical solution:
[0016] I. This utility model uses an array of ultraviolet lamp beads to excite the titanium dioxide coating for photodecomposition. Compared with traditional filter cartridges, it increases the number of light sources and adopts a multi-point irradiation method to reduce the shadow area. At the same time, it uses a reflective film for reflection to further reduce the shadow area and improve the decomposition efficiency.
[0017] Second, this utility model forms a spiral air duct through a guide plate, which increases the travel distance of air as it passes through the filter element, ensuring that the filter element can fully purify pollutants in the air and improve the purification effect.
[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a structural diagram of the present invention;
[0021] Figure 2 This is a bottom view of the structure of this utility model;
[0022] Figure 3 This is a structural diagram of the filter assembly of this utility model;
[0023] Figure 4 This is a diagram of the internal structure of the shell of this utility model.
[0024] Reference numerals: 10. Main component; 11. Housing; 12. Connecting plate; 13. Air outlet; 14. Reflective film; 15. Guide plate; 16. Light-transmitting tube; 17. Support column; 18. Ultraviolet lamp bead; 20. Filter assembly; 21. First mounting ring; 22. Filter screen; 23. Fixing plate; 24. Bracket; 25. Activated carbon filter layer; 26. Threaded hole; 27. Second mounting ring. Detailed Implementation
[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0027] like Figures 1-4As shown, this utility model embodiment provides a photocatalytic composite filter structure, including a main component 10, which includes a housing 11, a connecting plate 12, an air outlet 13, a reflective film 14, a guide plate 15, a light-transmitting tube 16, a support column 17, and an ultraviolet lamp bead 18.
[0028] Connecting plates 12 are symmetrically fixedly connected to the outer side wall of the housing 11. An air outlet 13 is provided on the top of the housing 11. A reflective film 14 is fixedly connected to the inner side wall of the housing 11. A guide plate 15 is fixedly connected to the inner side wall of the housing 11. The surface of the guide plate 15 is coated with a titanium dioxide coating. A light-transmitting tube 16 is fixedly connected inside the guide plate 15. The guide plate 15 is spirally arranged along the outer side wall of the light-transmitting tube 16, forming a spiral airflow channel between the guide plates 15. A support column 17 is fixedly connected to the inner side wall of the light-transmitting tube 16. Ultraviolet lamp beads 18 are evenly installed on the outer side wall of the support column 17. Air enters the interior of the housing 11 and, under the action of the guide plate 15, spirals upward along the airflow channel. During the upward process, the titanium dioxide coating is excited by the operation of the ultraviolet lamp bead 18 array to perform photodecomposition. At the same time, the reflective film 14 is used for reflection to improve the decomposition efficiency. The spiral airflow channel formed by the guide plate 15 increases the travel distance of the air through the filter element, improving the purification effect. The purified air is sent out through the air outlet 13.
[0029] In this embodiment, specifically: a filter assembly 20 is provided at the bottom of the main body assembly 10, and the filter assembly 20 includes a first mounting ring 21, a fixing plate 23, and a second mounting ring 27;
[0030] The bottom of the first mounting ring 21 is fixedly connected to a fixing plate 23, and the bottom of the fixing plate 23 is fixedly connected to a second mounting ring 27.
[0031] In this embodiment, specifically: the inner wall of the second mounting ring 27 is detachably connected to a filter screen 22, and the air passes through the filter screen 22 to filter large particulate impurities, completing one filtration process.
[0032] In this embodiment, specifically: a bracket 24 is fixedly connected to one side of the fixing plate 23 by bolts. The bracket 24 is fixed by bolts, making it convenient for the user to remove the bracket 24 to replace the activated carbon filter layer 25.
[0033] In this embodiment, specifically: the inner wall of the support 24 is provided with an activated carbon filter layer 25, and the air passes through the activated carbon filter layer 25 to adsorb small particulate impurities, completing the secondary filtration treatment.
[0034] In this embodiment, specifically: the bracket 24 is disposed between the first mounting ring 21 and the second mounting ring 27, and the bracket 24 is sealed with the first mounting ring 21 and the second mounting ring 27 using a sealing ring to prevent air from leaking through the gap.
[0035] In this embodiment, specifically: threaded holes 26 are symmetrically opened on the top of the first mounting ring 21, and fixing bolts are installed inside the threaded holes 26 through the connecting plate 12 to combine the main body component 10 and the filter component 20 into one unit.
[0036] In this embodiment, specifically: the first mounting ring 21 is fixedly connected to the bottom of the connecting plate 12 by bolts. The first mounting ring 21 is fixed by bolts, which makes it convenient for the user to remove the first mounting ring 21 to replace the filter screen 22.
[0037] In operation, air enters the filter element through the bottom, passes through the filter screen 22 to filter large particles of impurities, and then passes through the activated carbon filter layer 25 to adsorb small particles of impurities before entering the housing 11. Under the action of the guide plate 15, the air spirals upward along the airflow channel. During the upward movement, the titanium dioxide coating is stimulated by the array of ultraviolet lamp beads 18 to perform photodecomposition. Compared with traditional filter elements, this increases the number of light sources and adopts a multi-point irradiation method to reduce the shadow area. At the same time, the reflective film 14 is used for reflection, further reducing the shadow area and improving the decomposition efficiency. The spiral airflow channel formed by the guide plate 15 increases the travel distance of the air through the filter element, ensuring that the filter element can fully purify the pollutants in the air and improve the purification effect. The purified air is sent out through the air outlet 13.
[0038] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A photocatalytic composite filter structure, comprising a main component (10), characterized in that: The main component (10) includes a housing (11), a connecting plate (12), an air outlet (13), a reflective film (14), a guide plate (15), a light-transmitting tube (16), a support column (17), and an ultraviolet lamp bead (18). A connecting plate (12) is symmetrically fixedly connected to the outer side wall of the housing (11). An air outlet (13) is provided on the top of the housing (11). A reflective film (14) is fixedly connected to the inner side wall of the housing (11). A guide plate (15) is fixedly connected to the inner side wall of the housing (11). The surface of the guide plate (15) is coated with a titanium dioxide coating. A light-transmitting tube (16) is fixedly connected inside the guide plate (15). The guide plate (15) is spirally arranged along the outer side wall of the light-transmitting tube (16). A spiral airflow channel is formed between the guide plates (15). A support column (17) is fixedly connected to the inner side wall of the light-transmitting tube (16). Ultraviolet lamp beads (18) are uniformly installed on the outer side wall of the support column (17).
2. The photocatalytic composite filter structure according to claim 1, characterized in that: The bottom of the main body component (10) is provided with a filter component (20), which includes a first mounting ring (21), a fixing plate (23), and a second mounting ring (27). The bottom of the first mounting ring (21) is fixedly connected to a fixing plate (23), and the bottom of the fixing plate (23) is fixedly connected to a second mounting ring (27).
3. The photocatalytic composite filter structure according to claim 2, characterized in that: The inner wall of the second mounting ring (27) is detachably connected to a filter screen (22).
4. The photocatalytic composite filter structure according to claim 2, characterized in that: One side of the fixing plate (23) is fixedly connected to the bracket (24) by bolts.
5. The photocatalytic composite filter structure according to claim 4, characterized in that: The inner wall of the support (24) is provided with an activated carbon filter layer (25).
6. The photocatalytic composite filter structure according to claim 4, characterized in that: The bracket (24) is disposed between the first mounting ring (21) and the second mounting ring (27).
7. The photocatalytic composite filter structure according to claim 2, characterized in that: The top of the first mounting ring (21) is symmetrically provided with threaded holes (26).
8. The photocatalytic composite filter structure according to claim 2, characterized in that: The first mounting ring (21) is fixedly connected to the bottom of the connecting plate (12) by bolts.