Air purification device

Abstract

The invention 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 present invention relates to the technical field of air sterilization and disinfection, and in particular to an air purification device. Background Art

[0002] Under the current technical background, people pay attention to the air quality in confined spaces. In order to meet this demand, a variety of air sterilization and disinfection technologies have emerged. These technologies mainly include spraying alcohol into the air, using ultraviolet air sterilization and disinfection purifiers, and installing deep ultraviolet LED sterilization and disinfection devices at the air outlet of the air conditioner. Although the method of spraying alcohol into the air can achieve the effect of sterilization and disinfection to a certain extent, its safety hazards cannot be ignored, and it is very easy to cause fires due to improper operation or environmental factors. Although ultraviolet air sterilization and disinfection purifiers can effectively improve air quality, they usually need to occupy a certain amount of space, which is undoubtedly a waste of resources for a confined environment with limited space. In addition, although installing the sterilization and disinfection device at the air outlet of the air conditioner cleverly utilizes the air circulation function of the air conditioning system, it may also increase the wind resistance of the air conditioner and affect the use efficiency and life of the air conditioner. In order to improve the killing efficiency of ultraviolet rays on bacteria and viruses, the existing air sterilization and disinfection devices often need to increase the length of the pipeline to extend the exposure time of bacteria and viruses to ultraviolet rays and the reaction time with photocatalysts.

[0003] However, this approach also brings new problems. On the one hand, increasing the length of the pipe means that more materials and manufacturing costs are required, resulting in an increase in the cost of the entire device; on the other hand, longer pipes also take up more space, which is undoubtedly a considerable challenge for a closed environment that pursues space utilization efficiency. More importantly, overly long pipes may cause air circulation blockage, affect the effectiveness of sterilization and disinfection, and may even have an adverse effect on the indoor environment. Therefore, how to extend the air circulation path to increase the ultraviolet light exposure time while avoiding taking up too much space and maintaining smooth air circulation has become a problem that needs to be solved in current air sterilization and disinfection technology. Summary of the invention

[0004] In order to solve the problem of how to improve the air purification effect of an air purification device, the present invention provides an air purification device, comprising:

[0005] A pipeline unit, the pipeline unit comprising a first pipeline;

[0006] A coating unit, wherein the coating unit comprises a reflective coating and a photocatalyst;

[0007] An ultraviolet unit, the ultraviolet unit comprising a lamp holder and lamp beads; the lamp holder extends along the axial direction of the first pipe; the lamp beads are arranged at intervals along the circumference of the lamp holder; the lamp beads are distributed at intervals along the axial direction of the lamp holder;

[0008] A support unit, wherein a plurality of the support units are arranged in the first pipe at intervals; 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;

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

[0010] 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 to the internal space of the first pipe, the ultraviolet light source emitted by the lamp bead passing through the photocatalyst irradiating the reflective coating, and the ultraviolet light source emitted by the lamp bead irradiating the photocatalyst through the reflective coating.

[0011] In some embodiments, the protrusion 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 one 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 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 of the first protrusion close to the inner wall of the first pipe to the other end, and B is the distance from one end of the second protrusion close to the inner wall of the first pipe to the other end;

[0012] The first protrusions and the second protrusions are alternately arranged on the inner wall of the first pipe; the outer peripheral wall of the first protrusions is coated with the photocatalyst; and the outer peripheral wall of the second protrusions 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; and a plurality of the first protrusions are arranged in the interval area between two adjacent second protrusions.

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

[0015] In some embodiments, the pipeline unit further includes a second pipeline; the second pipeline is connected to the first pipeline;

[0016] The protrusion 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 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 in a 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 of the third protrusion close to the inner wall of the second pipe to the other end, and D is the distance from one end of the fourth protrusion close to the inner wall of the second pipe to the other end;

[0017] The third protrusions and the 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 arranged on the inner wall of the second pipe at intervals;

[0018] The disinfection state also includes the photocatalyst releasing reactants into the inner space of the second pipe.

[0019] In some embodiments, 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.

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

[0021] In some embodiments, the pipeline unit further includes a third pipeline; the third pipeline is connected to an end of the first pipeline away from the second pipeline; the lamp holder extends from the first pipeline to the third pipeline;

[0022] 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 in a 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 toward the other end; the fifth protrusions are arranged on the inner wall of the third pipe at intervals; the reflective coating is coated on the fifth protrusion;

[0023] Some of the support units are arranged at intervals in 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; the lamp beads are arranged at intervals along the circumference of the lamp holder; the lamp beads are distributed at intervals along the axial direction of the lamp holder.

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

[0025] In some embodiments, the air purification device further includes a fan unit; the fan unit, the third pipeline, the first pipeline, and the second pipeline are connected in sequence;

[0026] The disinfection state also includes the fan unit delivering air to the internal space of the pipeline unit.

[0027] In order to solve the problem of how to improve the air purification effect of the air purification device, the present invention has the following advantages:

[0028] By setting a plurality of protruding units, and the cross-sectional area of ​​the protruding units gradually decreases from one end close to the inner wall of the first pipe to the other end, and is conical, the air flow path in the pipe can be effectively increased without increasing the length of the pipe. The existence of the protruding units requires the air to bypass these obstacles during the flow process, thereby prolonging the residence time of the air in the pipe. At the same time, the outer surface of some protruding units is coated with a reflective coating, and some are coated with a photocatalyst. The reflective coating and the photocatalyst are alternately coated at intervals. Such a design not only increases the contact area between the photocatalyst and the air, so that bacteria and viruses can be attached to the protruding units more, 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 exposure time. The photocatalyst releases the reactant to the internal space of the first pipe under the irradiation of ultraviolet rays, and kills the bacteria and viruses in the air. Therefore, this structure can achieve the effect of increasing the air flow path, prolonging the ultraviolet light exposure time, and increasing the contact area between the photocatalyst and the air, and finally solves the problem of how to improve the air purification device to disinfect bacteria and viruses in the air. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0031] Figure 3 A schematic diagram of a first pipeline in another embodiment is shown;

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

[0033] Figure 5 A schematic diagram of a second pipeline in another embodiment is shown;

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

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

[0036] Figure numerals: 01 pipeline unit; 11 first pipeline; 12 second pipeline; 13 third pipeline; 02 coating unit; 21 reflective coating; 22 photocatalyst; 03 ultraviolet unit; 31 lamp holder; 32 lamp beads; 04 supporting 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 exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0038] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this 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 structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0039] In the present embodiment, in the field of air purification technology, traditional air purification devices often extend the air circulation path by increasing the length of the pipeline, thereby increasing the time that bacteria and viruses are irradiated by the ultraviolet light source and the reaction time with the photocatalyst 22. However, this approach not only increases the cost and space occupied by the device, but may also cause poor air circulation and affect the purification effect. In order to overcome these problems, the prior art needs to find a new solution that can effectively extend the air circulation path without increasing the length of the pipeline, while increasing the ultraviolet irradiation time and the contact area between the photocatalyst 22 and the air. Therefore, this embodiment proposes a new air purification device, which aims to solve the technical problems of how to extend the air circulation path, increase the ultraviolet irradiation time, and increase the contact area between the photocatalyst 22 and the air by providing a raised unit 05 and alternating coatings of the reflective coating 21 and the photocatalyst 22. As Figure 1 , Figure 2, Figure 3 As shown, the pipeline unit 01 includes a first pipeline 11, in which a coating unit 02 is arranged. The coating unit 02 is composed of a reflective coating 21 and a photocatalyst 22, which is used to enhance the ultraviolet light effect and promote the reaction of the photocatalyst 22. The ultraviolet unit 03 includes a lamp holder 31 extending axially along the first pipeline 11, and lamp beads 32 arranged circumferentially and axially along the lamp holder 31, which are used to emit ultraviolet light. In addition, a plurality of support units 04 are arranged at intervals in the first pipeline 11, one end of which is detachably connected to the inner wall of the first pipeline 11, and the other end of which is detachably connected to the outer wall of the lamp holder 31, providing a stable support for the lamp holder 31. One end of the protrusion unit 05 is fixedly connected to the inner wall of the first pipeline 11, and the other end extends in a direction close to the central axis of the first pipeline 11, and the cross-sectional area gradually decreases. The plurality of protrusion units 05 are arranged at intervals, and part of the outer surface is coated with a reflective coating 21, and part of the outer surface is coated with a photocatalyst 22. When such an air purification device is in the disinfection state, the ultraviolet light source emitted by the lamp bead 32 can irradiate the photocatalyst 22, and the photocatalyst 22 releases the reactants into the internal space of the first pipe 11. At the same time, the ultraviolet light source passes through the photocatalyst 22 and irradiates the reflective coating 21, and then reflects back to the photocatalyst 22. Therefore, without increasing the length of the pipe, the air circulation path and the ultraviolet irradiation time are increased through the raised unit 05, as well as the contact area between the photocatalyst 22 and the air, thereby improving the disinfection efficiency of bacteria and viruses in the air.

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

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

[0042] In this embodiment, if Figure 3 As shown, on the inner wall of the first pipe 11, a plurality of second protrusions 52 are arranged at intervals, and a plurality of first protrusions 51 are arranged in the interval area between two adjacent second protrusions 52. Such a layout further increases the contact area between the photocatalyst 22 and the air, thereby improving the air purification efficiency.

[0043] In this embodiment, if Figure 3 As shown, the second protrusion 52 is arranged in the interval area between two adjacent 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 effect of the second protrusion 52, reduces shadow occlusion, and further enhances the disinfection effect.

[0044] In this embodiment, if Figure 4 , Figure 5 As shown, in addition to the first pipe 11, the pipe unit 01 also includes a second pipe 12 connected thereto. In the second pipe 12, a third protrusion 53 and a fourth protrusion 54 similar to the first protrusion 51 and the second protrusion 52 are also provided, and the two are alternately arranged at intervals, and the height of the fourth protrusion 54 is greater than the height of the third protrusion 53, that is, the distance D from one end of the fourth protrusion 54 close to the inner wall of the second pipe 12 to the other end is greater than the distance C from one end of the third protrusion 53 close to the inner wall of the second pipe 12 to the other end. Some lamp beads 32 are arranged at intervals on the inner wall of the second pipe 12 to emit ultraviolet light sources. Such a design not only increases the contact area and illumination uniformity of the photocatalyst 22 with the air, but also reduces wind resistance and improves air circulation efficiency by removing the support unit 04 and the lamp holder 31. At the same time, the height difference between the fourth protrusion 54 and the third protrusion 53 also slows down the air flow speed, prolonging the contact time between the air and the photocatalyst 22 and the ultraviolet illumination time.

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

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

[0047] In this embodiment, if Figure 6 , Figure 7 As shown, the pipeline unit 01 also includes a third pipeline 13 connected to the end of the first pipeline 11 away from the second pipeline 12. In the third pipeline 13, a fifth protrusion 55 is provided, the cross-sectional area of ​​which gradually decreases, and is arranged at intervals on the inner wall of the third pipeline 13, and the outer surface is coated with a reflective coating 21. Part of the support unit 04 is arranged at intervals in the third pipeline 13 to provide support for the lamp holder 31. The lamp beads 32 are arranged at intervals along the circumference and axial direction of the lamp holder 31. Such a design improves the air purification effect by arranging different protrusions in different areas. At the same time, the protrusions in the third pipeline 13 are only coated with a reflective coating 21, which further enhances the ultraviolet light sterilization effect.

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

[0049] In this embodiment, if Figure 1As shown, the air purification device further includes a fan unit 06, which is sequentially connected to the third pipe 13, the first pipe 11, and the second pipe 12. In the disinfection state, the fan unit 06 delivers air to the inner space of the pipe unit 01 to drive air circulation. Such a design not only facilitates the air purification process, but also improves the air purification efficiency.

[0050] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. An air purification device, characterized in that: The air purification device comprises: A pipeline unit, the pipeline unit comprising a first pipeline; A coating unit, wherein the coating unit comprises a reflective coating and a photocatalyst; An ultraviolet unit, the ultraviolet unit comprising a lamp holder and lamp beads; the lamp holder extends along the axial direction of the first pipe; the lamp beads are arranged at intervals along the circumference of the lamp holder; the lamp beads are distributed at intervals along the axial direction of the lamp holder; A support unit, wherein a plurality of the support units are arranged in the first pipe at intervals; 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 protrusion unit, one end of which is fixedly connected to the inner wall of the first pipe, and the other end of which extends in a direction close to the central axis of the first pipe; the cross-sectional area of ​​the protrusion unit gradually decreases from one end close to the inner wall of the first pipe to the other end; a plurality of the protrusion units are arranged at intervals on the inner wall of the first pipe; the interval between two adjacent protrusion units is within a set range; the outer surfaces of some of the protrusion units are coated with the reflective coating; the outer surfaces of some of the protrusion units are 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 to the internal space of the first pipe, the ultraviolet light source emitted by the lamp bead passing through the photocatalyst irradiating the reflective coating, and the ultraviolet light source emitted by the lamp bead irradiating the photocatalyst through the reflective coating.

2. An air purification device according to claim 1, characterized in that: The protrusion 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 one 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 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 of the first protrusion close to the inner wall of the first pipe to the other end, and B is the distance from one end of the second protrusion close to the inner wall of the first pipe to the other end; The first protrusions and the second protrusions are alternately arranged on the inner wall of the first pipe; the outer peripheral wall of the first protrusions is coated with the photocatalyst; and the outer peripheral wall of the second protrusions is coated with the reflective coating.

3. An air purification device according to claim 2, characterized in that: A plurality of the second protrusions are arranged at intervals on the inner wall of the first pipe; and a plurality of the first protrusions are arranged in the interval area between two adjacent second protrusions.

4. An air purification device according to claim 3, characterized in that: The second protrusion is located in the spacing area between two adjacent lamp 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 protrusion 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 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 in a 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 of the third protrusion close to the inner wall of the second pipe to the other end, and D is the distance from one end of the fourth protrusion close to the inner wall of the second pipe to the other end; The third protrusions and the 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 arranged on the inner wall of the second pipe at intervals; The disinfection state also includes the photocatalyst releasing reactants into the inner 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 onto the photocatalyst.

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

8. An air purification device according to claim 7, characterized in that: The pipeline unit further includes a third pipeline; the third pipeline is connected to an end of the first pipeline away from the second pipeline; the lamp holder extends from the first pipeline to the third pipeline; 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 in a 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 toward the other end; the fifth protrusions are arranged on the inner wall of the third pipe at intervals; the reflective coating is coated on the fifth protrusion; Some of the support units are arranged at intervals in 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; the lamp beads are arranged at intervals along the circumference of the lamp holder; the lamp beads are distributed at intervals along the axial direction of the lamp holder.

9. An air purification device according to claim 8, characterized in that: B>E>C; wherein B is the distance from one end of the second protrusion close to the inner wall of the first pipe to the other end, E is the distance from one end of the fifth protrusion close to the inner wall of the third pipe to the other end, and C is the distance from one end of the third protrusion close 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 pipeline, the first pipeline, and the second pipeline are connected in sequence; The disinfection state also includes the fan unit delivering air to the internal space of the pipeline unit.

Images