Sterilization device, air filter and filtration system

Abstract

The present application provides a sterilization device, an air filter, and a filtration system, which relate to the technical field of sterilization equipment. The sterilization device includes an ultraviolet lamp module, two relatively arranged cover plates, and two reflective layers; a flow chamber that allows air to flow is formed between the two cover plates, and both cover plates are provided with air holes connected to the flow chamber; corresponding reflective layers are provided on the opposite surfaces of the two cover plates, wherein at least one of the two reflective layers is a diffuse reflective layer; the ultraviolet lamp module is provided on the cover plate, and the ultraviolet lamp module is used to emit ultraviolet rays into the flow chamber. The sterilization device provided by the present application greatly improves the utilization rate of ultraviolet rays, prolongs the stagnation time of air in the flow chamber, and improves the sterilization effect.

Description

Technical Field

[0001] The present invention relates to the technical field of sterilization equipment, and in particular to a sterilization device, an air filter and a filtering system. Background Art

[0002] Currently, traditional air filters filter air through a filter element, but this element can only trap dust particles and has limited filtering effectiveness against tiny bacteria and viruses. Furthermore, bacteria and viruses can attach to the filter element and multiply, posing a significant safety hazard. To kill bacteria and viruses, existing technologies employ ultraviolet lamps mounted on the filter element, utilizing direct ultraviolet radiation for sterilization. However, the utilization rate of ultraviolet light is low, resulting in suboptimal sterilization results. Summary of the Invention

[0003] The purpose of this application is to provide a sterilization device, an air filter and a filtration system to solve the deficiencies in the prior art.

[0004] To achieve the above-mentioned objectives, in a first aspect, the present application provides a sterilization device comprising an ultraviolet lamp module, two oppositely arranged cover plates, and two reflective layers;

[0005] A flow chamber allowing air to flow is formed between the two cover plates, and air holes communicating with the flow chamber are provided on both cover plates;

[0006] The two opposite surfaces of the cover plates are respectively provided with corresponding reflective layers, wherein at least one of the two reflective layers is a diffuse reflective layer;

[0007] The ultraviolet lamp module is arranged on the cover plate, and is used for emitting ultraviolet rays into the flow chamber.

[0008] In combination with the first aspect, in a possible implementation manner, the diffuse reflection layer is formed with a reflective surface that is alternating between concave and convex.

[0009] In combination with the first aspect, in a possible implementation manner, the air holes on the two cover plates are arranged in a staggered manner.

[0010] In combination with the first aspect, in a possible implementation manner, there are multiple air holes on the two cover plates.

[0011] In combination with the first aspect, in a possible implementation manner, the plurality of air holes are evenly distributed on a surface of the cover plate on a side away from the flow chamber.

[0012] In combination with the first aspect, in a possible implementation manner, the reflective layer is coated on or adhered to the cover plate.

[0013] In combination with the first aspect, in a possible implementation, the ultraviolet lamp module includes a preset number of ultraviolet LED light strips, and the preset number of ultraviolet LED light strips are arranged on the cover plate.

[0014] In combination with the first aspect, in a possible implementation manner, the cover plate is provided with a mounting groove corresponding to the ultraviolet LED light strip, and a light-transmitting hole allowing ultraviolet rays to pass through is provided in the mounting groove.

[0015] In a second aspect, the present application further provides an air filter, comprising a filter element assembly and the sterilization device provided in the first aspect, wherein the filter element assembly is arranged on a side of one of the cover plates away from the other cover plate.

[0016] In a third aspect, the present application also provides a filtration system, comprising the air filter provided in the second aspect above.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The present application provides a sterilization device, comprising an ultraviolet lamp module, two opposing cover plates, and two reflective layers; a flow chamber allowing air flow is formed between the two cover plates, and both cover plates are provided with air holes communicating with the flow chamber; corresponding reflective layers are provided on opposing surfaces of the two cover plates, wherein at least one of the two reflective layers is a diffuse reflective layer; the ultraviolet lamp module is provided on the cover plates, and is configured to emit ultraviolet light into the flow chamber. The sterilization device provided by the present application allows air to enter the flow chamber through the air holes on one of the cover plates, and the ultraviolet light emitted by the ultraviolet lamp module irradiates one of the reflective layers. Since at least one of the two reflective layers is a diffuse reflective layer and since the diffuse reflective layer has a diffuse emitting surface, when the ultraviolet light irradiates or reflects onto the diffuse reflective surface, the ultraviolet light is diffusely reflected on the diffuse reflective surface, thereby presenting a "multi-directional" scattering mode, avoiding excessive concentration of energy in one direction. Therefore, the diffuse reflection can make the radiated light more evenly distributed throughout the flow chamber, maximizing the retention of the radiant energy in the flow chamber, greatly improving the utilization rate of the ultraviolet light, and achieving the purpose of efficient sterilization.

[0019] In addition, since at least one of the two reflective layers is a diffuse reflective layer, when the air flows in the flow chamber, turbulence will be generated due to the unevenness of the diffuse reflection of the diffuse reflective layer, thereby extending the stagnation time of the air in the flow chamber, thereby increasing the exposure time of ultraviolet rays to the air and improving the sterilization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a sterilization device provided in an embodiment of the present application is shown;

[0022] Figure 2 Shown Figure 1 Cross-sectional view along the AA axis;

[0023] Figure 3 Shown Figure 1 A schematic diagram of the three-dimensional structure of the reverse side of the first cover plate in the sterilization device shown;

[0024] Figure 4 Shown Figure 1 A schematic diagram of the three-dimensional structure of the first cover plate in the sterilization device in the front state;

[0025] Figure 5 Shown Figure 1 A schematic diagram of the three-dimensional structure of the reverse side of the second cover plate in the sterilization device shown;

[0026] Figure 6 Shown Figure 1 A schematic three-dimensional structural diagram of the front state of the second cover plate in the sterilization device is shown.

[0027] Description of main component symbols:

[0028] 100- sterilization device; 110- UV lamp module; 111- UV LED light strip; 120- cover plate; 120a- air hole; 120b- flow chamber; 121- first cover plate; 1210- first air hole; 1211- first air guide sleeve; 1212- mounting groove; 1213- light-transmitting hole; 121a- first side; 121b- second side; 121c- first groove; 122- second cover plate; 1220- second air hole; 1221- second air guide sleeve; 122a- third side; 122b- fourth side; 122c- second groove; 130- reflective layer; 131- first reflective layer; 131a- through hole; 132- second reflective layer. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0032] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] Example 1

[0035] See also Figure 1 and Figure 2 , this embodiment provides a sterilization device 100 for sterilizing air passing through the sterilization device 100 .

[0036] The sterilization device 100 provided in this application includes a UV lamp module 110, two oppositely disposed cover plates 120, and two reflective layers 130. A flow chamber 120b that allows air to flow is formed between the two oppositely disposed cover plates 120. Both cover plates 120 are provided with air holes 120a, which are connected to the flow chamber 120b. Reflective layers 130 are provided on opposite sides of the two cover plates 120. The UV lamp module 110 is disposed on one of the cover plates 120 and can emit ultraviolet light into the flow chamber 120b. When the ultraviolet light strikes the reflective layer 130, it is reflected.

[0037] Furthermore, in order to more clearly describe the technical solution of this embodiment, the two cover plates 120 are defined as the first cover plate 121 and the second cover plate 122, and the corresponding air holes 120a opened on the first cover plate 121 are the first air holes 1210, and the air holes 120a opened on the second cover plate 122 are the second air holes 1220.

[0038] Optionally, the first cover plate 121 and the second cover plate 122 have matching shapes, that is, cylindrical, prismatic, or other shapes. The first air holes 1210 and the second air holes 1220 can be circular, square, hexagonal, or other shapes.

[0039] The first cover plate 121 includes a first side surface 121a and a second side surface 121b opposite to each other, and the second cover plate 122 includes a third side surface 122a and a fourth side surface 122b opposite to each other. The first side surface 121a of the first cover plate 121 and the third side surface 122a of the second cover plate 122 are close to each other, and the second side surface 121b of the first cover plate 121 and the fourth side surface 122b of the second cover plate 122 are far away from each other.

[0040] Furthermore, the first cover plate 121 and the second cover plate 122 are connected by snap-fit or screws, which facilitates disassembly, assembly and maintenance.

[0041] See also Figure 2 、 Figure 3 as well as Figure 5The first side 121a has a first groove 121c recessed into the interior of the first cover plate 121, and the third side 122a has a second groove 122c recessed into the second cover plate 122. When the first side 121a and the third side 122a are brought into proximity, the first groove 121c and the second groove 122c cooperate to form the flow chamber 120b, which allows air to flow. The first air hole 1210 on the first cover plate 121 and the second air hole 1220 on the second cover plate 122 are both connected to the flow chamber 120b, thereby ensuring that air can enter the flow chamber 120b from the first air hole 1210 and then flow out from the second air hole 1220; alternatively, air can enter the flow chamber 120b from the second air hole 1220 and then flow out from the first air hole 1210.

[0042] Combined with reference Figure 4 and Figure 6 Furthermore, there are multiple first air holes 1210 on the first cover plate 121, and the multiple first air holes 1210 are evenly distributed on the second side surface 121b of the first cover plate 121. There are multiple second air holes 1220 on the second cover plate 122, and the multiple second air holes 1220 are evenly distributed on the fourth side surface 122b of the second cover plate 122, thereby ensuring that air can smoothly enter the flow chamber 120b and can smoothly flow out of the flow chamber 120b.

[0043] Optionally, the adjacent first air holes 1210 and the second air holes 1220 are staggered with each other, so that the air does not pass directly through the first air holes 1210 and the second air holes 1220, and the flow path of the air into the flow chamber 120b is relatively long, thereby increasing the flow time of the air in the flow chamber 120b.

[0044] See also Figure 2 、 Figure 3 as well as Figure 5 In this embodiment, the two reflective layers 130 are defined as a first reflective layer 131 and a second reflective layer 132. The first reflective layer 131 is disposed at the bottom of the first groove 121c on the first side surface 121a or at the bottom and surrounding sidewalls of the first groove 121c. The second reflective layer 132 is disposed at the bottom of the second groove 122c on the third side surface 122a or at the bottom and surrounding sidewalls of the second groove 122c.

[0045] It should be understood that since the first side surface 121a of the first cover plate 121 and the third side surface 122a of the second cover plate 122 are relatively arranged, the first reflective layer 131 located at the bottom of the first groove 121c and the second reflective layer 132 located at the bottom of the second groove 122c are also relatively arranged.

[0046] Optionally, the first reflective layer 131 and the second reflective layer 132 are formed on the corresponding first cover plate 121 and the second cover plate 122 by coating. Alternatively, the first reflective layer 131 and the second reflective layer 132 are provided on the corresponding first cover plate 121 and the second cover plate 122 by bonding.

[0047] See also Figure 1 、 Figure 2 as well as Figure 4 The UV lamp module 110 includes a predetermined number of UV LED light strips 111, which are disposed on the first cover 121 or the second cover 122. In this embodiment, the predetermined number of UV LED light strips 111 are disposed on the second side surface 121b of the first cover 121. It will be appreciated that the number of UV LED light strips 111 is determined by the area of the second side surface 121b and is not limited in this embodiment.

[0048] Specifically, each ultraviolet LED light strip 111 is provided with a plurality of LED lamp beads, which emit ultraviolet rays. A mounting groove 1212 is provided on the second side 121b of the first cover plate 121 corresponding to each ultraviolet LED light strip 111, and the mounting groove 1212 does not interfere with the first air hole 1210. A light-transmitting hole 1213 corresponding to the LED lamp bead is provided in the mounting groove 1212. The light-transmitting hole 1213 extends from the second side 121b to the first side 121a, and a through hole 131a is provided on the first reflective layer 131 corresponding to the light-transmitting hole 1213. As a result, the ultraviolet rays emitted by each LED lamp bead will pass through the corresponding light-transmitting hole 1213 and through hole 131a in sequence, and directly irradiate the second reflective layer 132 on the second cover plate 122.

[0049] As will be appreciated, this embodiment utilizes ultraviolet-emitting LED lamp beads. As a continuous radiant energy generator, the LED lamp beads emit invisible light, but the spectrum they emit is still in the form of a light beam, conforming to the principle of light reflection. Furthermore, because the first reflective layer 131 and the second reflective layer 132 are positioned relative to each other, the ultraviolet light continuously reflects between the first reflective layer 131 and the second reflective layer 132 until the energy is exhausted. Simultaneously, the LED lamp beads continue to emit energy, which, combined with the still-reflecting light, creates a superposition effect, maximizing the radiant energy and thereby better sterilizing and disinfecting the air flowing through the flow chamber 120b, thereby killing bacteria and viruses in the air.

[0050] Furthermore, the adjacent first air holes 1210 and second air holes 1220 are staggered with each other, which increases the flow time of air in the flow chamber 120b, that is, increases the radiation time and sterilization time of ultraviolet rays on the air, thereby improving the sterilization effect.

[0051] Of course, there is also the situation in which a very small amount of ultraviolet rays may be reflected into the first air holes 1210 and the second air holes 1220 and interrupt the reflection, but this situation does not affect the sterilization effect.

[0052] See also Figure 2 、 Figure 3 as well as Figure 5 In this embodiment, both the first reflective layer 131 and the second reflective layer 132 are diffuse reflective layers having a diffuse reflective surface. Therefore, when ultraviolet light is irradiated or reflected onto the diffuse reflective surface of the diffuse reflective layer, it is diffusely reflected on the diffuse reflective surface, thereby exhibiting a "multi-directional" scattering pattern, preventing excessive concentration of energy in a single direction. Therefore, diffuse reflection allows the radiation to be more evenly distributed throughout the flow chamber 120b, maximizing the retention of radiation energy within the flow chamber 120b, greatly improving the utilization rate of the ultraviolet light and achieving efficient sterilization.

[0053] Furthermore, the diffuse reflection layer forms a diffuse reflection surface with alternating concave and convex shapes, that is, the diffuse reflection surface is concave and convex. Therefore, the air flowing through the diffuse reflection surface will also fluctuate accordingly, disturbing the air in the flow cavity, causing the flowing air to form a turbulent state. The relatively flat reflection surface can also extend the path of the air, thereby increasing the air retention time.

[0054] Therefore, in this embodiment, the first reflective layer 131 and the second reflective layer 132 are designed to be diffusely reflective, which not only has an optical effect, but also has a retention effect on the airflow, which can extend the time that the air passes through the sterilization device 100, thereby enhancing the sterilization effect of the module.

[0055] Of course, in some embodiments, the first reflective layer 131 or the second reflective layer 132 is a diffuse reflective layer. For example, if the first reflective layer 131 is a diffuse reflective layer, the second reflective layer 132 is a specular reflective layer, which can also achieve a sterilization effect. It should be understood that the above is only an example and does not limit the scope of protection of this application.

[0056] Optionally, the diffuse reflection surface of the diffuse reflection layer is a wave-shaped arc surface, a concave-convex diamond surface, a honeycomb surface or other non-flat surface. It should be understood that the above is only an example and does not limit the scope of protection of this application.

[0057] It should also be noted that existing air sterilizers using ultraviolet mercury lamps generally employ direct irradiation, failing to effectively utilize optical principles or maximize energy efficiency. Furthermore, mercury lamps are relatively powerful, are tube-shaped, and offer limited optical design flexibility. Furthermore, the gaseous mercury within these lamps is a lethal neurotoxic gas. Therefore, the use of solid-state LED lamp beads to emit ultraviolet light in this embodiment is relatively safer. Furthermore, considering that existing LED lamp beads still have low efficiency in converting ultraviolet radiation, this embodiment, combined with the optical design provided, increases energy efficiency, leveraging the structural flexibility and design advantages to create a relatively safe and effective sterilization product.

[0058] At the same time, air is a fluid. When air becomes the object to be disinfected, attention must be paid to its flow rate. The speed of the flow rate affects the success rate of air disinfection. Therefore, the sterilization device 100 provided in this embodiment can retain the residence time of the air to a certain extent, affecting the flow rate but not the flow rate. In addition, with the efficient use of ultraviolet rays, the efficiency of ultraviolet sterilization can be maximized while exerting its safety advantages.

[0059] Example 2

[0060] See also Figures 2 to 6 This embodiment provides a sterilization device 100. This embodiment is an improvement made on the technical basis of the above-mentioned embodiment 1. Compared with the above-mentioned embodiment 1, the difference is that:

[0061] See also Figure 3 and Figure 4 In this embodiment, a first air guide sleeve 1211 is provided on the first cover plate 121 corresponding to the first air hole 1210. The first air guide sleeve 1211 is located at the bottom of the first groove 121c and extends in a direction away from the second side surface 121b. The first air guide sleeve 1211 has an air guide channel therein, which is connected to the first air hole 1210.

[0062] See also Figure 5 and Figure 6 A second air guide sleeve 1221 is provided on the second cover plate 122 corresponding to the second air hole 1220. The second air guide sleeve 1221 is located at the bottom of the second groove 122c and extends in a direction away from the fourth side surface 122b. The second air guide sleeve 1221 has an air guide channel therein, which is connected to the second air hole 1220.

[0063] Combined with reference Figure 2When the first cover plate 121 and the second cover plate 122 are arranged relative to each other, the opening of the first air guide sleeve 1211 faces the bottom of the second groove 122c, and the opening of the second air guide sleeve 1221 faces the bottom of the first groove 121c. For example, air enters from the first air hole 1210 and is guided to the bottom of the second groove 122c by the air guide channel of the first air guide sleeve 1211. After the air with a certain flow rate hits the bottom of the second groove 122c, it will diffuse to the surroundings, so that the air is evenly dispersed in the flow chamber 120b, thereby improving the sterilization effect. In addition, the air in the flow chamber 120b enters the air guide channel from the opening of the second air guide sleeve 1221 and is discharged from the second air hole 1220, which can extend the air path, increase the sterilization time, and improve the sterilization effect. Of course, the effect of air entering from the second air hole 1220 and being discharged from the first air hole 1210 is the same, which will not be repeated here.

[0064] See also Figure 3 and Figure 5 Furthermore, a first reflecting layer 131 is correspondingly provided on the outer surface of the first air guiding sleeve 1211, and a second reflecting layer 132 is correspondingly provided on the second air guiding sleeve 1221. In this way, when the ultraviolet rays are reflected to the outer side surfaces of the first air guiding sleeve 1211 and the second air guiding sleeve 1221, they can be further reflected, so that the ultraviolet rays are dispersed more evenly in the flow chamber 120b, thereby improving the utilization rate of the ultraviolet rays and enhancing the sterilization effect.

[0065] Example 3

[0066] See also Figures 1 to 6 This embodiment provides an air filter, which is used to filter dust in the air and sterilize the air at the same time.

[0067] The air filter includes a filter element assembly and the sterilization device 100 provided in the first or second embodiment. The specific structure of the sterilization device 100 has been described in detail in the first or second embodiment and will not be elaborated on here. The filter element assembly is disposed on the second side 121b of the first cover plate 121. Thus, air first enters the flow chamber 120b through the second air hole 1220 of the second cover plate 122 for sterilization and disinfection, then flows out through the first air hole 1210 of the first cover plate 121 and enters the filter element assembly for filtration.

[0068] In some embodiments, the air is first filtered by the filter element assembly, then passes through the first air hole 1210 of the first cover plate 121 through the flow chamber 120 b for sterilization, and then is discharged from the second air hole 1220 of the second cover plate 122 .

[0069] This embodiment also provides a filtering system, including the above-mentioned air filter. Of course, the number of air filters in the filtering system can be set to multiple.

[0070] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0071] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A sterilization device, characterized in that: It includes an ultraviolet lamp module, two oppositely arranged cover plates and two reflective layers; A flow chamber allowing air flow is formed between the two cover plates, and air holes communicating with the flow chamber are provided on both cover plates. The two cover plates are defined as a first cover plate and a second cover plate, respectively. The air holes provided on the corresponding first cover plate are first air holes, and the air holes provided on the corresponding second cover plate are second air holes. There are multiple first air holes and multiple second air holes, and adjacent first air holes and second air holes are staggered with each other. The first cover plate includes a first side surface and a second side surface that are opposite to each other, and the second cover plate includes a third side surface and a fourth side surface that are opposite to each other; wherein the first side surface and the third side surface are close to each other, and the second side surface and the fourth side surface are far away from each other; The first side surface is provided with a first groove toward the interior of the first cover plate, and the third side surface is provided with a second groove toward the second cover plate. When the first side surface and the third side surface are close to each other, the first groove and the second groove cooperate to form the flow chamber allowing air to flow. A first air guide sleeve is provided on the first cover plate corresponding to the first air hole. The first air guide sleeve is located at the bottom of the first groove and extends away from the second side surface. The first air guide sleeve has an air guide channel therein, and the air guide channel is connected to the first air hole. A second air guide sleeve is provided on the second cover plate corresponding to the second air hole. The second air guide sleeve is located at the bottom of the second groove and extends in a direction away from the fourth side surface. The second air guide sleeve has an air guide channel therein, and the air guide channel is connected to the second air hole. The two opposite surfaces of the cover plates are respectively provided with corresponding reflective layers, wherein at least one of the two reflective layers is a diffuse reflective layer; The ultraviolet lamp module is arranged on the cover plate, and is used for emitting ultraviolet rays into the flow chamber.

2. The sterilization device according to claim 1, characterized in that The diffuse reflection layer is formed with a concave and convex reflection surface.

3. The sterilization device according to claim 1, characterized in that The plurality of air holes are evenly distributed on the surface of the cover plate at a side away from the flow chamber.

4. The sterilization device according to claim 1, characterized in that The reflective layer is coated or bonded on the cover plate.

5. The sterilization device according to claim 1, characterized in that: The ultraviolet lamp module includes a preset number of ultraviolet LED light strips, and the preset number of ultraviolet LED light strips are arranged on the cover plate.

6. The sterilization device according to claim 5, characterized in that: The cover plate is provided with a mounting groove corresponding to the ultraviolet LED light strip, and a light-transmitting hole allowing ultraviolet rays to pass through is provided in the mounting groove.

7. An air filter, characterized in that: The sterilization device comprises a filter element assembly and any one of claims 1 to 6, wherein the filter element assembly is arranged on a side of one of the cover plates away from the other cover plate.

8. A filtration system, characterized in that: Comprising the air filter of claim 7.

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