Air purification device

Abstract

The utility model relates to the technical field of air sterilization and disinfection, in particular to an air purification device. According to the air purification device, a lamp holder of an ultraviolet unit extends in the axial direction of a first pipeline of a pipeline unit; the lamp beads are arranged at intervals in the circumferential direction and the axial direction of the lamp holder. The two ends of the supporting unit are detachably connected with the first pipeline and the lamp holder correspondingly. The protruding units extend in the direction close to the central axis of the first pipeline. The plurality of bulge units are arranged on the inner wall of the first pipeline at intervals; and the outer surfaces of the bulge units are respectively coated with reflecting coatings and photocatalysts of the coating units. In the disinfection state, the ultraviolet light source emitted by the lamp beads irradiates the photocatalyst, the photocatalyst releases reactants to the inner space of the first pipeline, the ultraviolet light source emitted by the lamp beads penetrates through the photocatalyst and irradiates the reflecting coating, and the ultraviolet light source emitted by the lamp beads irradiates the photocatalyst through the reflecting coating. Therefore, the problem of how to improve the air purification effect of the air purification device is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air sterilization and disinfection technical field, specifically, relate to an air purification device. BACKGROUND

[0002] Under the current technical background, people pay attention to the air quality of the closed space. In order to meet this demand, various air sterilization and disinfection technologies emerge as the times require. These technologies mainly include spraying alcohol into the air, using ultraviolet air sterilization and disinfection purification machine, and installing deep ultraviolet LED sterilization and disinfection device at the air outlet of air conditioner. The way of spraying alcohol into the air can kill bacteria and disinfect to some extent, but its safety hidden danger cannot be ignored, and fire is easily caused by improper operation or environmental factors. Although the ultraviolet air sterilization and disinfection purification machine can effectively improve the air quality, it usually needs to occupy a certain space, which is undoubtedly a waste of resources for the closed environment with limited space. In addition, although the sterilization and disinfection device installed at the air outlet of air conditioner ingeniously utilizes the air circulation function of air conditioner system, it may also increase the air resistance of air conditioner, affecting the use efficiency and service life of air conditioner. In order to improve the sterilization efficiency of ultraviolet on bacteria and viruses, the existing air sterilization and disinfection device often needs to increase the length of pipeline to prolong the irradiation time of bacteria and viruses by ultraviolet and the reaction time of photocatalyst.

[0003] However, this approach also brings new problems. On the one hand, increasing the length of pipeline means that more materials and manufacturing costs are needed, resulting in the increase of the cost of the whole device. On the other hand, longer pipeline also occupies more space, which is undoubtedly a big challenge for the closed environment that pursues space utilization efficiency. More importantly, too long pipeline may cause air flow obstruction, affecting the sterilization and disinfection effect, and even may have adverse effects on indoor environment. Therefore, how to prolong the air flow path to increase the ultraviolet irradiation time while avoiding occupying too much space and keeping the smoothness of air flow becomes a problem to be solved in the current air sterilization and disinfection technology. SUMMARY

[0004] In order to solve the problem of how to improve the purification effect of air purification device on air, the utility model provides an air purification device, which comprises:

[0005] Pipeline unit, the pipeline unit includes first pipeline;

[0006] Coating unit, the coating unit includes reflective coating, photocatalyst;

[0007] Ultraviolet unit, the ultraviolet unit includes lamp holder, lamp bead;The lamp holder extends along the axial direction of the first pipeline;The lamp bead is arranged along the circumference of the lamp holder;The lamp bead is distributed along the axial direction of the lamp holder.

[0008] a support unit, a plurality of the support units are arranged at intervals in the first pipe; one end of the support unit is detachably connected with the inner wall of the first pipe, and the other end is detachably connected with the outer wall of the lamp holder;

[0009] a protruding unit, one end of the protruding unit is fixedly connected with the inner wall of the first pipe, and the other end extends towards the direction close to the central axis of the first pipe; the cross-sectional area of the protruding unit gradually decreases from one end close to the inner wall of the first pipe to the other end; a plurality of the protruding units are arranged at intervals on the inner wall of the first pipe; the interval distance between two adjacent protruding units is within a set range; the outer surface of part of the protruding units is coated with the reflective coating; the outer surface of part of the protruding units is coated with the photocatalyst;

[0010] The air purification device further comprises a disinfection state; in the disinfection state, the ultraviolet light source emitted by the lamp beads irradiates on the photocatalyst, the photocatalyst releases reactants to the internal space of the first pipe, the ultraviolet light source emitted by the lamp beads irradiates on the reflective coating through the photocatalyst, and the ultraviolet light source emitted by the lamp beads irradiates to the photocatalyst through the reflective coating.

[0011] In some embodiments, the protruding unit comprises a first protrusion and a second protrusion; one end of the first protrusion is fixedly connected with the inner wall of the first pipe, and the other end extends towards the direction close to the central axis of the first pipe; the cross-sectional area of the first protrusion gradually decreases from one end close to the inner wall of the first pipe to the other end; one end of the second protrusion is fixedly connected with the inner wall of the first pipe, and the other end extends towards the direction close to the central axis of the first pipe; the cross-sectional area of the second protrusion gradually decreases from one end close to the inner wall of the first pipe to the other end; A < B; wherein A is the distance from one end close to the inner wall of the first pipe to the other end of the first protrusion, and B is the distance from one end close to the inner wall of the first pipe to the other end of the second protrusion;

[0012] The first protrusion and the second protrusion are alternately arranged at intervals on the inner wall of the first pipe; the outer peripheral wall of the first protrusion is coated with the photocatalyst; and the outer peripheral wall of the second protrusion is coated with the reflective coating.

[0013] In some embodiments, a plurality of the second protrusions are arranged at intervals on the inner wall of the first pipe; a plurality of the first protrusions are arranged in the interval region between two adjacent second protrusions.

[0014] In some embodiments, the second protrusion is located in the interval region between two adjacent lamp beads.

[0015] In some embodiments, the pipe unit further comprises a second pipe; the second pipe is in communication with the first pipe;

[0016] The protrusion unit further comprises a third protrusion and a fourth protrusion; one end of the third protrusion is fixedly connected to the inner wall of the second pipe, and the other end extends towards the direction close to the central axis of the second pipe; the cross-sectional area of the third protrusion gradually decreases from one end close to the inner wall of the second pipe to the other end; one end of the fourth protrusion is fixedly connected to the inner wall of the second pipe, and the other end extends towards the direction close to the central axis of the second pipe; the cross-sectional area of the fourth protrusion gradually decreases from one end close to the inner wall of the second pipe to the other end; C < D; wherein C is the distance from one end close to the inner wall of the second pipe to the other end of the third protrusion, and D is the distance from one end close to the inner wall of the second pipe to the other end of the fourth protrusion;

[0017] The third protrusion and the fourth protrusion are alternately and spacedly arranged on the inner wall of the second pipe; the outer surface of the third protrusion is coated with the photocatalyst; the outer surface of the fourth protrusion is coated with the reflective coating; part of the lamp beads are spacedly arranged on the inner wall of the second pipe;

[0018] The disinfection state further comprises that the photocatalyst releases reactants to the internal space of the second pipe.

[0019] In some embodiments, the lamp beads are embedded between the inner wall of the second pipe and the third protrusion; the disinfection state further comprises that the ultraviolet light source emitted by the lamp beads passes through the third protrusion and irradiates on the photocatalyst.

[0020] In some embodiments, A > C, B > D; wherein A is the distance from one end close to the inner wall of the first pipe to the other end of the first protrusion, B is the distance from one end close to the inner wall of the first pipe to the other end of the second protrusion, C is the distance from one end close to the inner wall of the second pipe to the other end of the third protrusion, and D is the distance from one end close to the inner wall of the second pipe to the other end of the fourth protrusion.

[0021] In some embodiments, the pipe unit further comprises a third pipe; the third pipe is in communication with the end of the first pipe away from the second pipe; the lamp holder extends from the first pipe to the third pipe;

[0022] The protrusion unit further comprises a fifth protrusion; one end of the fifth protrusion is fixedly connected to the inner wall of the third pipe, and the other end extends towards the direction close to the central axis of the third pipe; the cross-sectional area of the fifth protrusion gradually decreases from one end close to the inner wall of the third pipe to the other end; the fifth protrusion is spacedly arranged on the inner wall of the third pipe; the fifth protrusion is coated with the reflective coating.

[0023] Part of the support unit is arranged in the third pipeline; one end of part of the support unit is detachably connected with the inner wall of the third pipeline, and the other end is detachably connected with the outer wall of the lamp holder; the lamp beads are arranged along the circumference of the lamp holder; the lamp beads are arranged along the axial direction of the lamp holder.

[0024] In some embodiments, B>E>C; wherein B is the distance from one end to the other end of the second protrusion close to the inner wall of the first pipeline, E is the distance from one end to the other end of the fifth protrusion close to the inner wall of the third pipeline, and C is the distance from one end to the other end of the third protrusion close to the inner wall of the second pipeline.

[0025] In some embodiments, the air purification device further comprises a fan unit; the fan unit, the third pipeline, the first pipeline, and the second pipeline are sequentially communicated.

[0026] The disinfection state further comprises that the fan unit transports air to the internal space of the pipeline unit.

[0027] To solve the problem of how to improve the purification effect of the air purification device, the utility model has the following advantages:

[0028] By arranging multiple protrusion units, and gradually reducing the cross-sectional area of the protrusion units from one end close to the inner wall of the first pipeline to the other end, in a conical shape, the flow path of the air in the pipeline can be effectively increased without increasing the length of the pipeline. The existence of the protrusion units makes the air flow need to bypass these obstacles, thereby prolonging the residence time of the air in the pipeline. At the same time, the outer surfaces of part of the protrusion units are coated with a reflective coating, part of which is coated with a photocatalyst, and the reflective coating and the photocatalyst are alternately and spacedly coated. Such a design not only increases the contact area of the photocatalyst and the air, so that bacteria and viruses can more easily adhere to the protrusion units, but also, through the reflection of the reflective coating, the ultraviolet light source emitted by the lamp beads can be irradiated on the photocatalyst multiple times, increasing the ultraviolet light irradiation time. The photocatalyst releases reactants into the internal space of the first pipeline under the irradiation of ultraviolet light, and disinfects the bacteria and viruses in the air. Therefore, this structure can achieve the effects of increasing the air flow path, prolonging the ultraviolet light irradiation time, and increasing the contact area of the photocatalyst and the air, ultimately solving the problem of how to improve the disinfection efficiency of the air purification device on the bacteria and viruses in the air. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 An air purification device schematic diagram of an embodiment is shown;

[0030] Figure 2 A first pipeline schematic diagram of an embodiment is shown;

[0031] Figure 3 A first pipe schematic diagram of another embodiment is shown;

[0032] Figure 4 A second pipe schematic diagram of an embodiment is shown;

[0033] Figure 5 A second pipe schematic diagram of another embodiment is shown;

[0034] Figure 6 A third pipe schematic diagram of an embodiment is shown;

[0035] Figure 7 A third pipe schematic diagram of another embodiment is shown.

[0036] Reference signs: 01 pipe unit; 11 first pipe; 12 second pipe; 13 third pipe; 02 coating unit; 21 reflective coating; 22 photocatalyst; 03 ultraviolet unit; 31 lamp holder; 32 lamp bead; 04 support unit; 05 protrusion unit; 51 first protrusion; 52 second protrusion; 53 third protrusion; 54 fourth protrusion; 55 fifth protrusion; 06 fan unit. DETAILED DESCRIPTION

[0037] The present disclosure will now be discussed with reference to several example embodiments. It should be appreciated that these embodiments are discussed only to better illustrate the present disclosure and, as such, should not be taken as limiting the scope of the present disclosure.

[0038] As used herein, the term "includes" and its variants are to be read as open-ended terms that mean "including, but not limited to." The term "based on" is to be construed as "based at least in part on." The terms "one embodiment" and "an embodiment" are to be read as "at least one embodiment." The term "another embodiment" is to be read as "at least one other embodiment." The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and similar terms are used for orientation or positional relationships based on the orientation or position as shown in the drawings. These terms are primarily used to better describe the application and its embodiments, and are not used to limit the indicated device, element or component to a particular orientation or configuration, or to a particular manner of construction or operation. Also, some of the terms described above, in addition to indicating orientation or positional relationships, can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances. In addition, the terms "mounting", "setting", "provided with", "connected", "connected" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and configurations may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated device, element or component. Unless otherwise stated, the meaning of "multiple" is two or more.

[0039] In the present embodiment, in the field of air purification technology, the traditional air purification device often prolongs the air flow path by increasing the length of the pipeline, thereby increasing the time for bacteria and viruses to be irradiated by the ultraviolet light source and the reaction time with the photocatalyst 22. However, this approach not only increases the cost and space occupation of the device, but also may cause poor air flow, affecting the purification effect. In order to overcome these problems, the prior art needs to find a new solution that can effectively prolong the air flow path without increasing the length of the pipeline, while increasing the ultraviolet light irradiation time and the contact area of the photocatalyst 22 with the air. Therefore, the present embodiment proposes a new air purification device, which is designed to solve the technical problems of how to prolong the air flow path, increase the ultraviolet light irradiation time, and increase the contact area of the photocatalyst 22 with the air, by setting the protruding unit 05 and the alternating coating of the reflective coating 21 and the photocatalyst 22. As Figure 1 、 Figure 2、 Figure 3 As shown, the pipeline unit 01 comprises a first pipeline 11, a coating unit 02 is arranged in the first pipeline 11, the coating unit 02 is composed of a reflective coating 21 and a photocatalyst 22, which is used to enhance the effect of ultraviolet light and promote the reaction of the photocatalyst 22. The ultraviolet unit 03 comprises a lamp holder 31 extending along the axis of the first pipeline 11, and a plurality of lamp beads 32 arranged along the circumferential direction and the axial direction of the lamp holder 31, which is used to emit ultraviolet light source. In addition, a plurality of support units 04 are arranged in the first pipeline 11, one end of which is detachably connected with the inner wall of the first pipeline 11, and the other end is detachably connected with the outer wall of the lamp holder 31, which provides stable support for the lamp holder 31. One end of the protruding unit 05 is fixedly connected with the inner wall of the first pipeline 11, and the other end extends towards the center axis of the first pipeline 11, and the cross-sectional area gradually decreases, a plurality of protruding units 05 are arranged at intervals, and part of the outer surface is coated with reflective coating 21 and part of the outer surface is coated with photocatalyst 22. In the sterilization state, the ultraviolet light source emitted by the lamp bead 32 can irradiate on the photocatalyst 22, the photocatalyst 22 releases the reaction product to the inside space of the first pipeline 11, and at the same time the ultraviolet light source irradiates on the reflective coating 21 through the photocatalyst 22, and then reflects back to the photocatalyst 22, thereby increasing the air flow path and the ultraviolet light irradiation time, and the contact area of the photocatalyst 22 and the air without increasing the length of the pipeline, and improving the sterilization efficiency of bacteria and viruses in the air.

[0040] In other embodiments, the pipeline unit 01 can be made of light-transmitting materials such as light-transmitting plastics, glass, quartz and the like, the reflective coating 21 can be coated on the outer peripheral wall of the pipeline unit 01, and part of the photocatalyst 22 can be coated on the inner peripheral wall of the pipeline unit 01, which is convenient for processing and improves the sterilization effect of the photocatalyst 22 and the ultraviolet light source. The cross-sectional shape of the pipeline unit 01 can be rectangular, circular or other polygonal shape. The protruding unit 05 can also be made of light-transmitting materials, so that the ultraviolet light source can increase the refraction path and improve the sterilization effect on the air.

[0041] In this embodiment, as shown in Figure 2 、 Figure 3As shown, the convex unit 05 is further refined into a first convex 51 and a second convex 52, both of which are fixedly connected to the inner wall of the first pipeline 11 at one end and extend towards the direction close to the central axis at the other end, and the cross-sectional area gradually decreases. However, the height of the second convex 52 is greater than that of the first convex 51, that is, the distance B from one end of the second convex 52 close to the inner wall of the first pipeline 11 to the other end is greater than the distance A from one end of the first convex 51 close to the inner wall of the first pipeline 11 to the other end. The outer peripheral wall of the first convex 51 is coated with a photocatalyst 22 to enhance the sterilization and disinfection effect; the outer peripheral wall of the second convex 52 is coated with a reflective coating 21 to enhance the refractive index of the ultraviolet light source and improve the uniformity of light. The first convex 51 and the second convex 52 are alternately and spacedly arranged on the inner wall of the first pipeline 11. Such a design not only increases the contact area of the photocatalyst 22 and the air, but also slows down the air flow speed through the height difference between the second convex 52 and the first convex 51, further prolonging the contact time of the air and the photocatalyst 22 and the ultraviolet light irradiation time.

[0042] In this embodiment, as shown in the drawings, Figure 3 On the inner wall of the first pipeline 11, a plurality of second convexes 52 are spacedly arranged, and a plurality of first convexes 51 are arranged in the interval between adjacent two second convexes 52. Such a layout further increases the contact area of the photocatalyst 22 and the air, and improves the air purification efficiency.

[0043] In this embodiment, as shown in the drawings, Figure 3 The second convex 52 is arranged in the interval between adjacent two lamp beads 32. Such a design not only makes full use of the space, but also improves the reflection uniformity of the ultraviolet light source in the pipeline through the reflection of the second convex 52, reduces the shadow blocking, and further enhances the sterilization and disinfection effect.

[0044] In this embodiment, as shown in the drawings, Figure 4 , Figure 5 In addition to the first pipeline 11, the pipeline unit 01 also includes a second pipeline 12 in communication therewith. In the second pipeline 12, similar to the first convex 51 and the second convex 52, a third convex 53 and a fourth convex 54 are alternately and spacedly arranged, and the height of the fourth convex 54 is greater than that of the third convex 53, that is, the distance D from one end of the fourth convex 54 close to the inner wall of the second pipeline 12 to the other end is greater than the distance C from one end of the third convex 53 close to the inner wall of the second pipeline 12 to the other end. Part of the lamp beads 32 are spacedly arranged on the inner wall of the second pipeline 12 to emit ultraviolet light sources. Such a design not only increases the contact area of the photocatalyst 22 and the air and the uniformity of light, but also reduces the air resistance by removing the support unit 04 and the lamp holder 31, thereby improving the air flow efficiency. At the same time, the height difference between the fourth convex 54 and the third convex 53 also slows down the air flow speed, prolongs the contact time of the air and the photocatalyst 22, and the ultraviolet light irradiation time.

[0045] In the present embodiment, as shown in Figure 4 , Figure 5 , the lamp beads 32 are embedded between the inner wall of the second pipe 12 and the third protrusions 53. Such design not only further reduces the flow resistance, but also ensures that the ultraviolet light source can pass through the third protrusions 53 to irradiate on the photocatalyst 22, thereby ensuring the sterilization effect.

[0046] In the present embodiment, in order to further optimize the air flow efficiency, the distance B from one end to the other end of the second protrusions 52 close to the inner wall of the first pipe 11 is greater than the distance A from one end to the other end of the first protrusions 51 close to the inner wall of the first pipe 11, and the distance D from one end to the other end of the fourth protrusions 54 close to the inner wall of the second pipe 12 is greater than the distance C from one end to the other end of the third protrusions 53 close to the inner wall of the second pipe 12. Such design makes the flow resistance in the second pipe 12 smaller and the air flow more smooth.

[0047] In the present embodiment, as shown in Figure 6 , Figure 7 , the pipe unit 01 further comprises a third pipe 13 communicating with the end of the first pipe 11 away from the second pipe 12. In the third pipe 13, the fifth protrusions 55 are arranged, which gradually decrease in cross-sectional area and are arranged at intervals on the inner wall of the third pipe 13, and the outer surface is coated with a reflective coating 21. Part of the support units 04 are arranged at intervals in the third pipe 13 to provide support for the lamp holder 31. The lamp beads 32 are arranged at intervals along the circumferential and axial directions of the lamp holder 31. Such design improves the air purification effect by arranging different protrusion arrangements in different areas. At the same time, the protrusions in the third pipe 13 are only coated with a reflective coating 21, which further enhances the ultraviolet light sterilization effect.

[0048] In the present embodiment, in order to further optimize the ultraviolet light irradiation time, the distance E from one end to the other end of the fifth protrusions 55 close to the inner wall of the third pipe 13 is less than the distance B from one end to the other end of the second protrusions 52 close to the inner wall of the first pipe 11 and greater than the distance C from one end to the other end of the third protrusions 53 close to the inner wall of the second pipe 12. That is, the height of the second protrusions 52 in the first pipe 11 is greater than the height of the fifth protrusions 55 in the third pipe 13, and the height of the fifth protrusions 55 is greater than the height of the third protrusions 53 in the second pipe 12. Such design ensures that the ultraviolet light source can fully irradiate the air and photocatalyst 22 in each area, thereby improving the sterilization effect.

[0049] In the present embodiment, as shown in Figure 1As shown, the air purification device further comprises a fan unit 06, which is in sequence communicated with the third pipeline 13, the first pipeline 11 and the second pipeline 12. In the disinfection state, the fan unit 06 delivers air to the internal space of the pipeline unit 01, and drives the air circulation. Such design not only facilitates the air purification process, but also improves the air purification efficiency.

[0050] Those skilled in the art can understand that the above-mentioned embodiments are specific cases for realizing the present disclosure, and in actual application, various changes can be made in form and details without departing from the scope of the present disclosure.

Claims

1. An air purification device, characterized in that, The air purification device includes: Piping unit, the piping unit including a first piping; The coating unit includes a reflective coating and a photocatalyst; The ultraviolet unit includes a lamp holder and LEDs; the lamp holder extends axially along the first conduit; the LEDs are spaced apart circumferentially along the lamp holder; the LEDs are distributed spaced apart axially along the lamp holder. A support unit, wherein multiple support units are spaced apart inside the first pipe; one end of the support unit is detachably connected to the inner wall of the first pipe, and the other end is detachably connected to the outer wall of the lamp holder; A raised unit, one end of which is fixedly connected to the inner wall of the first pipe, and the other end extending towards the central axis of the first pipe; the cross-sectional area of ​​the raised unit gradually decreases from one end near the inner wall of the first pipe to the other end; a plurality of raised units are spaced apart on the inner wall of the first pipe; the spacing between two adjacent raised units is within a set range; the outer surface of some of the raised units is coated with the reflective coating; the outer surface of some of the raised units is coated with the photocatalyst; The air purification device also includes a disinfection state; the disinfection state includes the ultraviolet light source emitted by the lamp bead irradiating the photocatalyst, the photocatalyst releasing reactants into the internal space of the first pipe, the ultraviolet light source emitted by the lamp bead passing through the photocatalyst and irradiating the reflective coating, and the ultraviolet light source emitted by the lamp bead irradiating the photocatalyst through the reflective coating.

2. The air purification device according to claim 1, characterized in that, The protruding unit includes a first protrusion and a second protrusion; one end of the first protrusion is fixedly connected to the inner wall of the first pipe, and the other end extends in a direction close to the central axis of the first pipe; the cross-sectional area of ​​the first protrusion gradually decreases from the end close to the inner wall of the first pipe to the other end; one end of the second protrusion is fixedly connected to the inner wall of the first pipe, and the other end extends in a direction close to the central axis of the first pipe; the cross-sectional area of ​​the second protrusion gradually decreases from the end close to the inner wall of the first pipe to the other end; A < B; where A is the distance from the end of the first protrusion close to the inner wall of the first pipe to the other end, and B is the distance from the end of the second protrusion close to the inner wall of the first pipe to the other end; The first protrusion and the second protrusion are alternately arranged on the inner wall of the first pipe; the outer peripheral wall of the first protrusion is coated with the photocatalyst; the outer peripheral wall of the second protrusion is coated with the reflective coating.

3. An air purification device according to claim 2, characterized in that, Multiple second protrusions are spaced apart on the inner wall of the first pipe; multiple first protrusions are provided in the space between two adjacent second protrusions.

4. An air purification device according to claim 3, characterized in that, The second protrusion is located in the gap area between two adjacent LED beads.

5. An air purification device according to claim 4, characterized in that, The pipeline unit further includes a second pipeline; the second pipeline is connected to the first pipeline; The protruding unit further includes a third protrusion and a fourth protrusion; one end of the third protrusion is fixedly connected to the inner wall of the second pipe, and the other end extends in a direction close to the central axis of the second pipe; the cross-sectional area of ​​the third protrusion gradually decreases from the end close to the inner wall of the second pipe to the other end; one end of the fourth protrusion is fixedly connected to the inner wall of the second pipe, and the other end extends in a direction close to the central axis of the second pipe; the cross-sectional area of ​​the fourth protrusion gradually decreases from the end close to the inner wall of the second pipe to the other end; C < D; where C is the distance from the end of the third protrusion close to the inner wall of the second pipe to the other end, and D is the distance from the end of the fourth protrusion close to the inner wall of the second pipe to the other end; The third and fourth protrusions are alternately arranged on the inner wall of the second pipe; the outer surface of the third protrusion is coated with the photocatalyst; the outer surface of the fourth protrusion is coated with the reflective coating; some of the lamp beads are spaced apart on the inner wall of the second pipe; The disinfection process also includes the photocatalyst releasing reactants into the internal space of the second pipe.

6. An air purification device according to claim 5, characterized in that, The lamp bead is embedded between the inner wall of the second pipe and the third protrusion; the disinfection state also includes the ultraviolet light source emitted by the lamp bead passing through the third protrusion and irradiating the photocatalyst.

7. An air purification device according to claim 6, characterized in that, A > C, B > D; where A is the distance from one end of the first protrusion near the inner wall of the first pipe to the other end, B is the distance from one end of the second protrusion near the inner wall of the first pipe to the other end, C is the distance from one end of the third protrusion near the inner wall of the second pipe to the other end, and D is the distance from one end of the fourth protrusion near the inner wall of the second pipe to the other end.

8. An air purification device according to claim 7, characterized in that, The pipe unit further includes a third pipe; the third pipe is connected to the end of the first pipe away from the second pipe; the lamp holder extends from inside the first pipe to the third pipe; The protrusion unit further includes a fifth protrusion; one end of the fifth protrusion is fixedly connected to the inner wall of the third pipe, and the other end extends toward the central axis of the third pipe; the cross-sectional area of ​​the fifth protrusion gradually decreases from the end near the inner wall of the third pipe toward the other end; the fifth protrusions are spaced apart on the inner wall of the third pipe; the fifth protrusion is coated with the reflective coating. Some of the support units are spaced apart inside the third pipe; one end of some of the support units is detachably connected to the inner wall of the third pipe, and the other end is detachably connected to the outer wall of the lamp holder.

9. An air purification device according to claim 8, characterized in that, B > E > C; where B is the distance from one end of the second protrusion closest to the inner wall of the first pipe to the other end, E is the distance from one end of the fifth protrusion closest to the inner wall of the third pipe to the other end, and C is the distance from one end of the third protrusion closest to the inner wall of the second pipe to the other end.

10. An air purification device according to claim 9, characterized in that, The air purification device further includes a fan unit; the fan unit, the third pipe, the first pipe, and the second pipe are connected in sequence. The disinfection process also includes the fan unit supplying air to the internal space of the duct unit.

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