Air purifier related to photocatalysis module

Abstract

The utility model discloses an air purifier relating to a photocatalysis module, which belongs to the technical field of air purification equipment and comprises a shell, an air outlet is fixedly connected to the top of the shell, and an air inlet is fixedly connected to the bottom of the shell; a fan module, a first filtering module, a photocatalysis module and a second filtering module are arranged in the shell from bottom to top; the photocatalysis module comprises a first cylinder, a second cylinder and a third cylinder, the first cylinder, the second cylinder and the third cylinder are coaxially arranged, the diameters of the first cylinder, the second cylinder and the third cylinder are gradually increased, and a plurality of photocatalyst attachment nets are fixedly connected into cavities among the first cylinder, the second cylinder and the third cylinder; the top ends of the first cylinder and the second cylinder are closed, and the bottom ends of the first cylinder and the second cylinder are open; the top end of the third cylinder is communicated with the bottom end of the second filtering module through a hollow hole; multiple holes are formed in the side faces of the first cylinder and the second cylinder. According to the utility model, the time of airflow passing through the photocatalyst attachment net can be prolonged, and the catalytic effect of the photocatalyst is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of air purification equipment, and in particular relates to an air purifier involving a photocatalytic module. Background Technology

[0002] In recent years, as people's living standards have improved, their requirements for indoor air quality have also increased. More than 40% of human diseases are caused by indoor environmental pollution, making it imperative to address this issue.

[0003] Photocatalysis technology, as an environmentally friendly purification technology that is low-cost, safe to operate, energy-saving, and has high mineralization efficiency in a mild environment, has been recognized by the international academic community for its ability to improve indoor air quality.

[0004] Existing photocatalytic air purifiers mainly have the following problems and drawbacks:

[0005] 1. The single-layer photocatalytic filter structure cannot provide sufficient contact time, resulting in poor catalytic effect of photocatalysis.

[0006] 2. The fixed range of ultraviolet light irradiation results in uneven illumination on different parts of the catalyst, leading to differences in catalytic effect and affecting the purification effect.

[0007] Therefore, an air purifier involving a photocatalytic module is proposed. Utility Model Content

[0008] To address the aforementioned technical problems, this utility model proposes an air purifier involving a photocatalytic module.

[0009] To achieve the above objectives, this utility model provides an air purifier involving a photocatalytic module, comprising:

[0010] The housing has an air outlet fixedly connected to its top and an air inlet fixedly connected to its bottom; the interior of the housing, from bottom to top, includes a fan module, a first filter module, a photocatalytic module, and a second filter module.

[0011] The photocatalytic module includes a first cylinder, a second cylinder, and a third cylinder. The first cylinder, the second cylinder, and the third cylinder are coaxially arranged and their diameters gradually increase. Several photocatalyst attachment meshes are fixedly attached to the cavity between the first cylinder, the second cylinder, and the third cylinder. The top ends of the first cylinder and the second cylinder are closed, while the bottom ends are open. The bottom end of the first cylinder is connected to the air outlet at the top of the first filter module. The bottom end of the third cylinder is open, and its top end is connected to the bottom end of the second filter module through several hollow holes. Several holes are opened on the sides of the first cylinder and the second cylinder.

[0012] Preferably, the plurality of holes on the side of the first cylinder and the plurality of holes on the side of the second cylinder are distributed alternately.

[0013] Preferably, the inner walls of the first cylinder, the second cylinder, and the third cylinder are provided with a plurality of grooves at equal intervals, and a light strip is fixedly connected in the groove.

[0014] Preferably, the first filtration module includes a filter holder, which is frustum-shaped and open at the top and bottom. The filter holder is fixed to the inner wall of the housing. A HEPA filter is fixed to the top of the filter holder and communicates with the bottom of the first cylinder through the HEPA filter. The bottom of the filter holder is communicated with the top of the fan module.

[0015] Preferably, the second filtration module includes a container containing an activated carbon filter layer. The side wall of the container is fixed to the housing. The top surface of the container is connected to the air outlet. The bottom surface of the container is connected to the inner cavity of the third cylinder through a mesh plate.

[0016] Preferably, the fan module includes a mounting block, which is fixed to the inner wall of the housing, and the mounting block has a central hole on which a fan is fixedly mounted.

[0017] Preferably, an air detection module is fixedly connected to the outside of the air outlet.

[0018] Preferably, the mounting block has a battery slot on its side wall, a battery is installed in the battery slot, the battery is electrically connected to the fan and the light strip, and a switch is fixedly installed on the top of the air outlet, the switch being electrically connected to the battery.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] In the photocatalytic module of this application, after air is discharged from the first filter module, it first enters the first cylinder, passes through the first cylinder and the second cylinder, and then enters the second filter module from the top of the third cylinder. Several photocatalyst attachment nets are arranged in the cavity between the first cylinder, the second cylinder and the third cylinder in the photocatalytic module. Photocatalyst is attached to the photocatalyst attachment nets. This arrangement can prolong the time for the airflow to pass through the photocatalyst attachment nets and improve the catalytic effect of the photocatalyst. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1This is a schematic diagram of the external structure of an air purifier with a photocatalytic module according to this utility model;

[0023] Figure 2 This is an exploded view of the internal structure of the housing in an air purifier that relates to a photocatalytic module.

[0024] Figure 3 This is a cross-sectional view of an air purifier with a photocatalytic module according to this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the photocatalytic module in an air purifier, which relates to the photocatalytic module of this utility model;

[0026] Figure 5 This is a schematic diagram of air flow within the photocatalytic module of an air purifier that relates to the photocatalytic module of this utility model.

[0027] In the diagram: 1. Air inlet; 2. Fan; 3. Mounting block; 4. Battery; 5. Battery slot; 6. HEPA filter; 7. Filter holder; 8. Switch; 9. Photocatalyst attachment mesh; 10. Hole; 11. LED strip; 12. Activated carbon filter layer; 13. Container; 14. Air outlet; 16. First cylinder; 17. Second cylinder; 18. Third cylinder; 19. Housing. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 5 As shown, this embodiment provides an air purifier involving a photocatalytic module, comprising:

[0031] The housing 19 has an air outlet 14 fixed to its top and an air inlet 1 fixed to its bottom; inside the housing 19, from bottom to top, there are a fan module 2, a first filter module, a photocatalytic module and a second filter module.

[0032] The photocatalytic module includes a first cylinder 16, a second cylinder 17, and a third cylinder 18. The first cylinder 16, the second cylinder 17, and the third cylinder 18 are coaxially arranged and their diameters gradually increase. Several photocatalyst attachment meshes 9 are fixedly connected in the cavity between the first cylinder 16, the second cylinder 17, and the third cylinder 18. The top ends of the first cylinder 16 and the second cylinder 17 are closed and the bottom ends are open. The bottom end of the first cylinder 16 is connected to the air outlet 14 at the top of the first filter module. The bottom end of the third cylinder 18 is open, and its top end is connected to the bottom end of the second filter module through several hollow holes. Several holes 10 are opened on the sides of the first cylinder 16 and the second cylinder 17.

[0033] After the fan module 2 is turned on, it can accelerate airflow, drawing outside air into the housing 19 through the air inlet 1, and pushing the air through the first filter module, the photocatalytic module, and the second filter module in sequence, and finally expelling it from the air outlet 14. The air entering the housing 19 is filtered out of fine particles such as PM2.5 in the first filter module, and then enters the photocatalytic module. The photocatalytic module is equipped with a photocatalyst. Under the activation of the light source, the photocatalyst catalyzes pollutants such as formaldehyde and toluene in the air into carbon dioxide and water molecules, thereby purifying the air. After being purified by the photocatalytic module, the air enters the second filter module, which further adsorbs particulate matter and removes odors. Finally, the clean air after multi-stage purification is discharged from the air outlet 14. This utility model can effectively remove fine particulate matter and harmful substances such as formaldehyde from the air through a multi-stage filtration process, so that the air purification effect reaches a high efficiency standard.

[0034] In the photocatalytic module, after air is discharged from the first filter module, it first enters the first cylinder 16, passes through the first cylinder 16 and the second cylinder 17, and then enters the second filter module from the top of the third cylinder 18. Several photocatalyst attachment nets 9 are arranged in the cavity between the first cylinder 16, the second cylinder 17 and the third cylinder 18 in the photocatalytic module. Photocatalyst is attached to the photocatalyst attachment nets 9. This arrangement can prolong the time that the airflow passes through the photocatalyst attachment nets 9 and improve the catalytic effect of the photocatalyst.

[0035] Furthermore, the photocatalytic module can simultaneously place different types of photocatalyst attachment meshes 9 to achieve efficient treatment of complex gases.

[0036] Furthermore, the photocatalyst attachment mesh 9 has a mesh structure and can be made of titanium dioxide mesh or tungsten trioxide mesh. The photocatalyst is synthesized on the photocatalyst attachment mesh 9.

[0037] In a further optimized design, the holes 10 on the side of the first cylinder 16 and the holes 10 on the side of the second cylinder 17 are staggered.

[0038] The perforations 10 on the first cylinder 16 and the perforations 10 on the second cylinder 17 are staggered, which can prolong the flow distance of the airflow between the first cylinder 16 and the second cylinder 17, prolong the contact time between the airflow and the photocatalyst on the photocatalyst attachment net 9, and improve the photocatalytic efficiency and effect.

[0039] The scheme is further optimized by providing several grooves at equal intervals on the inner walls of the first cylinder 16, the second cylinder 17 and the third cylinder 18, with a light strip 11 fixedly connected in the groove.

[0040] The light strip 11 is horizontally wound in parallel around the inner walls of the first cylinder 16, the second cylinder 17 and the third cylinder 18, so that the light distribution on the photocatalyst is uniform, and further achieves efficient photocatalysis.

[0041] Further optimization of the scheme: the first filtration module includes a filter screen holder 7, which is frustum-shaped and open at the top and bottom. The filter screen holder 7 is fixed to the inner wall of the housing 19. A HEPA filter 6 is fixed to the top of the filter screen holder 7 and is connected to the bottom of the first cylinder 16 through the HEPA filter 6. The bottom of the filter screen holder 7 is connected to the top of the fan 2 module.

[0042] HEPA filter 6 removes fine particles such as PM2.5 from the air, and filter holder 7 guides air through HEPA filter 6.

[0043] HEPA filters, or high-efficiency air filters, utilize a filtration principle that includes interception, inertial impaction, and Brownian diffusion. Interception directly blocks particles larger than the fiber gaps; inertial impaction causes large particles to collide with the fibers due to inertia; and Brownian diffusion allows tiny particles to collide with and be adsorbed by the fibers during their random motion. Materials include PP filter paper and glass fiber. Based on the European standard EN1822, they are available in different filtration grades from H11 to U16. For example, H13 achieves a filtration efficiency of over 99.95% for particles as small as 0.3 microns. Key features include high filtration precision, capable of removing particles as small as 0.3 microns, and a large dust holding capacity. They are widely used in household air purifiers, fresh air systems, vacuum cleaners, medical facilities, and cleanrooms in industrial production, playing a crucial role in ensuring air quality and are a key component of modern air purification.

[0044] Further optimization of the scheme: the second filtration module includes a container 13, in which an activated carbon filter layer 12 is placed. The side wall of the container 13 is fixed to the shell 19. The top surface of the container 13 is connected to the air outlet 14. The bottom surface of the container 13 is connected to the inner cavity of the third cylinder 18 through a mesh plate.

[0045] The activated carbon filter layer 12 can adsorb particulate matter, formaldehyde, and remove odors, further purifying the air.

[0046] The design has been further optimized. The fan 2 module includes a mounting block 3, which is fixed to the inner wall of the housing 19. The mounting block 3 has a central hole and the fan 2 is fixedly installed thereon.

[0047] Fan 2 drives the airflow.

[0048] The design has been further optimized, with an air detection module fixedly attached to the outside of the air outlet 14.

[0049] The air detection module can be equipped with an optical dust sensor (model GP2Y1010AU0F), a sensor module (model MQ-135) for detecting various harmful gases, or a combination of both. The air detection module is used to detect and assess the air quality of purified air.

[0050] The design is further optimized by providing a battery slot 5 on the side wall of the mounting block 3, which contains a battery 4. The battery 4 is electrically connected to the fan 2 and the light strip 11. A switch 8 is fixedly installed on the top of the air outlet 14, and the switch 8 is electrically connected to the battery 4.

[0051] Battery 4 supplies power to fan 2 and light strip 11, and switch 8 controls the current flow from battery 4 to fan 2 and light strip 11.

[0052] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0053] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not 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 utility model.

[0054] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An air purifier involving a photocatalytic module, characterized in that, include: The housing (19) has an air outlet (14) fixed to the top and an air inlet (1) fixed to the bottom; the housing (19) is provided with a fan (2) module, a first filter module, a photocatalytic module and a second filter module from bottom to top inside; The photocatalytic module includes a first cylinder (16), a second cylinder (17), and a third cylinder (18). The first cylinder (16), the second cylinder (17), and the third cylinder (18) are coaxially arranged and their diameters gradually increase. Several photocatalyst attachment meshes (9) are fixedly connected in the cavity between the first cylinder (16), the second cylinder (17), and the third cylinder (18). The top of the first cylinder (16) and the second cylinder (17) are closed and the bottom is open. The bottom of the first cylinder (16) is connected to the air outlet (14) at the top of the first filter module. The bottom of the third cylinder (18) is open, and its top is connected to the bottom of the second filter module through several hollow holes. Several holes (10) are opened on the sides of the first cylinder (16) and the second cylinder (17).

2. The air purifier involving a photocatalytic module according to claim 1, characterized in that: The holes (10) on the side of the first cylinder (16) and the holes (10) on the side of the second cylinder (17) are distributed alternately.

3. The air purifier involving a photocatalytic module according to claim 1, characterized in that: The inner walls of the first cylinder (16), the second cylinder (17) and the third cylinder (18) are provided with several grooves at equal intervals, and a light strip (11) is fixedly connected in the groove.

4. The air purifier involving a photocatalytic module according to claim 1, characterized in that: The first filtration module includes a filter holder (7), which is frustum-shaped and open at the top and bottom. The filter holder (7) is fixed to the inner wall of the housing (19). A HEPA filter (6) is fixed to the top of the filter holder (7) and is connected to the bottom of the first cylinder (16) through the HEPA filter (6). The bottom of the filter holder (7) is connected to the top of the fan (2) module.

5. The air purifier involving a photocatalytic module according to claim 1, characterized in that: The second filtration module includes a container (13) containing an activated carbon filter layer (12). The side wall of the container (13) is fixed to the housing (19). The top surface of the container (13) is connected to the air outlet (14). The bottom surface of the container (13) is connected to the inner cavity of the third cylinder (18) through a mesh plate.

6. The air purifier involving a photocatalytic module according to claim 3, characterized in that: The fan (2) module includes a mounting block (3), which is fixed to the inner wall of the housing (19). The mounting block (3) has a central hole and a fan (2) is fixedly installed thereon.

7. The air purifier involving a photocatalytic module according to claim 1, characterized in that: An air detection module is fixedly connected to the outside of the air outlet (14).

8. The air purifier involving a photocatalytic module according to claim 6, characterized in that: The mounting block (3) has a battery slot (5) on its side wall. A battery (4) is installed in the battery slot (5). The battery (4) is electrically connected to the fan (2) and the light strip (11). A switch (8) is fixedly installed on the top of the air outlet (14). The switch (8) is electrically connected to the battery (4).

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