Active air purification device

Abstract

The invention belongs to the field of air purification devices, and particularly relates to an active air purification device which comprises a shell, a partition plate is fixedly connected to the interior of the shell, a main cylinder cover is fixedly connected between the partition plate and the shell, and an auxiliary cylinder cover spliced with an arc-shaped part of the main cylinder cover to form a cylindrical cavity is fixedly connected to the main cylinder cover. U-shaped lamp tubes are fixedly connected to the positions, located on the two sides of the main barrel cover, of the partition plate, the U-shaped lamp tubes generate an ultraviolet wave band with the wave band being 200-280 nm and a near ultraviolet wave band with the wave band being 280-400 nm, the inner sides of the arc-shaped parts of the main barrel cover and the auxiliary barrel cover are coated with catalyst coatings, and a spiral blade is rotationally connected to the interior of each barrel-shaped cavity. The edge of each spiral blade is fixedly connected with a flexible brush. The excitation effect on a catalyst coating is improved by irradiating light of two wave bands, air flow is utilized to blow spiral blades to rotate, air molecules make full contact with hydroxyl free radicals, the purification effect is improved, dust is swept and removed through a flexible brush, and the situation that the photocatalytic efficiency is affected by dust blowing is avoided.

Description

Technical Field

[0001] The invention belongs to the field of air purification devices, in particular to an active air purification device. Background Art

[0002] In the field of indoor air purification, traditional air purifiers mostly use filtration, adsorption and other methods to remove pollutants, but these methods are often unable to effectively remove gaseous pollutants and microorganisms such as viruses.

[0003] In recent years, the method of using photocatalytic technology to produce strong oxidants such as hydroxyl radicals has attracted attention due to its high efficiency and environmental protection. However, the efficiency of photocatalytic reaction in the existing technology is limited by the wavelength and intensity of the light source, and the catalyst coating cannot be fully stimulated to produce hydroxyl radicals. After the oxygen on the surface of the catalyst coating is converted into strong oxidizing free radicals, the hydroxyl radicals can only move near the surface of the material, which limits the contact between harmful substances and hydroxyl radicals, thereby affecting the efficiency and effect of air purification.

[0004] At the same time, the catalytic efficiency of photocatalytic materials is also limited by light. After long-term use, dust in the air will inevitably deposit and adhere to the surface of the light-emitting element, thereby blocking the light and causing insufficient light. It is impossible to provide sufficient light energy for subsequent conversion into chemical energy, and the purification device needs to be disassembled and cleaned, which is not conducive to use by ordinary users.

[0005] Therefore, how to continuously allow a large amount of light to reach the surface of the catalyst coating to provide sufficient light energy for subsequent conversion into chemical energy, so that there are sufficient hydroxyl radicals near the surface of the catalyst coating is one of the key points. At the same time, allowing a large amount of harmful substances to effectively contact a large amount of strongly oxidizing hydroxyl radicals to achieve high purification efficiency and effect is another key point.

[0006] A Chinese patent with publication number CN115218318A discloses a photocatalytic air purification device, which includes a shell and a catalytic component. The catalytic component is arranged in the shell, and a gas inlet is opened in the shell. The catalytic component includes a catalytic array, which is composed of a plurality of transparent substrates. Both surfaces of each substrate are coated with a photocatalytic material. The invention uses a material with high light transmittance as a carrier substrate of the photocatalytic material, irradiates the substrate with ultraviolet light, converts light energy into chemical energy, and oxygen on the surface is converted into strongly oxidizing free radicals. Unabsorbed ultraviolet light is transmitted through the substrate to irradiate the other side. After the photocatalytic material on the other side absorbs ultraviolet light, it also converts light energy into chemical energy. The light conversion efficiency is improved by repeatedly penetrating multiple layers of substrates, and the substrates are arranged in a specific manner to form catalytic arrays of various shapes, thereby increasing the passage of airflow and allowing harmful substances to fully contact the photocatalytic material to improve the catalytic rate.

[0007] However, the above patent still has the following disadvantages:

[0008] 1. In the above patent, the light intensity decays continuously during the process of repeatedly penetrating the multi-layer transparent substrate, making it difficult for the subsequent ultraviolet light penetrating the substrate to reach the energy required to excite the catalyst coating to produce hydroxyl radicals. Even if the ultraviolet light emitted in the above patent is completely absorbed and utilized in a specific environment, it is still difficult to stably and efficiently produce hydroxyl radicals to improve the purification effect.

[0009] 2. The light-emitting element and catalyst substrate in the above-mentioned patent are directly exposed to the air. After a long period of operation, the air will flow in the above-mentioned patent carrying dust. The dust will adhere to the light-emitting element and the surface of the substrate, blocking the emission and irradiation of light, thereby affecting the generation of hydroxyl free radicals and affecting the purification effect. Summary of the invention

[0010] In order to overcome the deficiencies of the prior art, the present invention solves the technical problem of completely wrapping and protecting the light-emitting part of the U-shaped lamp tube by arranging a lampshade and a lamp shell, thereby preventing the U-shaped lamp tube from being damaged by bumps and effectively preventing dust in the air from accumulating and adhering to the surface of the light-emitting part of the U-shaped lamp tube, thereby preventing dust from shielding and affecting the light catalytic efficiency. At the same time, the device can ensure a stable and good purification effect without frequent cleaning, thereby improving the user experience. The U-shaped lamp tube is controlled to accurately generate two different bands of irradiation light. The light energy of the two bands can effectively excite TiO2 to generate electron-hole pairs, thereby generating hydroxyl free radicals to effectively treat and kill gaseous pollutants in the gas and viruses and microorganisms, thereby effectively improving the ability to purify air quality. The spiral blades are arranged The blade can use the airflow to drive the spiral blade to rotate when the fan is running in the cylindrical chamber to form an airflow. The airflow speed can be reduced while the spiral blade is rotating, and the airflow is stirred and broken up so that the air can fully contact and react with the hydroxyl free radicals, thereby improving the air purification effect. By arranging a flexible brush, the auxiliary barrel cover, the main barrel cover and the arc-shaped surface of the lamp cover are continuously brushed during the rotation of the spiral blade, thereby effectively avoiding dust adhesion and affecting the photocatalytic reaction, ensuring that the purification device can maintain a good air purification effect for a long time. By arranging an air quality sensor, the air quality of the environment in which the device is located is automatically detected, and the information data is transmitted to the control module, so that the control module can adjust various parameters by itself, and realize the function of intelligently adjusting the purification effect according to the environment.

[0011] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: an active air purification device, comprising:

[0012] An outer shell, wherein a main cover is fixedly connected to the top of the outer shell, and a partition is fixedly connected inside the outer shell and the main cover;

[0013] A main barrel cover, to which a secondary barrel cover is fixedly connected, wherein the secondary barrel cover and the arc-shaped part of the main barrel cover are combined to form two cylindrical chambers;

[0014] Among them, U-shaped lamp tubes are fixedly connected on the partition at both sides of the two cylindrical chambers of the main tube cover, and a lamp shell covering the U-shaped lamp tube is fixedly connected at the corresponding position of each U-shaped lamp tube on the outside of the main tube cover, and the inner sides of the arc-shaped parts of the main tube cover and the auxiliary tube cover are coated with a catalyst coating.

[0015] Furthermore, the U-shaped lamp tube generates an ultraviolet band of 200-280nm and a near-ultraviolet band of 280-400nm respectively.

[0016] Furthermore, an internal air inlet is provided on the partition at a position corresponding to the cylindrical chamber formed by the main cylinder cover and the auxiliary cylinder cover, and a through internal exhaust port is provided at one end of the auxiliary cylinder cover away from the internal air inlet, and a spiral blade is rotatably connected between the partition and the inner wall of the outer shell and located inside each cylindrical chamber.

[0017] Furthermore, a lampshade is fixedly connected to the outer wall of the main tube cover at a position corresponding to each U-shaped lamp tube, the inner wall of each lampshade is in shape consistent with the inner wall of the main tube cover, the inner side of each lamp shell is coated with a reflective coating, the outer side of each lamp shell is fixedly connected to a first bracket fixedly connected to the outer shell, and each lampshade and spiral blade are made of transparent material.

[0018] Furthermore, a flexible brush is fixedly connected to the edge of the spiral blade, the flexible brush is made of a flexible material, and the flexible brush is in close contact with the inner wall of the cylindrical chamber formed by the auxiliary cylinder cover and the main cylinder cover.

[0019] Furthermore, a fan is fixedly connected to the top of the secondary tube cover, the space in the outer shell located on one side of the partition for placing the U-shaped lamp tube is the purification chamber, the space in the outer shell located on one side of the partition where the U-shaped lamp tube is not placed is the control chamber, the main cover is provided with an external exhaust port connected to the purification chamber, and external air inlets connected to the control chamber are respectively provided on both sides of the outer shell.

[0020] Furthermore, a second bracket is fixedly connected in the control chamber, a power module is fixedly connected in the second bracket, a bottom shell is fixedly connected at the bottom of the shell below the power module, a control module connected to each electrical component is provided at one end of the power module, and a wiring slot is provided at the bottom outer side of the shell at a position corresponding to the control module.

[0021] Furthermore, an air quality sensor is fixedly connected to the control chamber in the shell, the air quality sensor is located near one group of external air inlets, and the air quality sensor is connected to the control module.

[0022] Furthermore, a sub-cover is fixedly connected to the top of the main cover, a control panel is fixedly connected to the center of the sub-cover, and the control panel is connected to the control module.

[0023] Furthermore, a sealing gasket is provided between the fan and the auxiliary cylinder cover, and two groups of bearings are fixedly connected to the partition and the inner wall of the shell at positions corresponding to each spiral blade, and each group of bearings is rotatably connected to the corresponding spiral blade shaft part.

[0024] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0025] (1) By providing a lampshade and a lamp shell, the light-emitting part of the U-shaped lamp tube is completely wrapped and protected, so as to prevent the U-shaped lamp tube from being damaged by bumps and effectively prevent dust in the air from accumulating and adhering to the surface of the light-emitting part of the U-shaped lamp tube, thereby preventing dust from blocking and affecting the photocatalytic efficiency. At the same time, there is no need to frequently clean the device to ensure a stable and good purification effect, thereby improving the user experience.

[0026] (2) By controlling the U-shaped lamp tube to accurately generate two different wavelengths of light, the light energy of the two wavelengths can effectively excite TiO2 to produce electron-hole pairs, and then produce hydroxyl free radicals to effectively treat and kill gaseous pollutants and microorganisms such as viruses in the gas, thereby effectively improving the ability to purify air quality.

[0027] (3) By setting the spiral blades, when the fan is running to form an airflow in the cylindrical chamber, the airflow can be used to drive the spiral blades to rotate. While the spiral blades are rotating, the airflow speed can be reduced, and the airflow can be stirred and dispersed so that the air can fully contact and react with the hydroxyl free radicals, thereby improving the air purification effect.

[0028] (4) By providing a flexible brush, the secondary tube cover, the main tube cover and the arc-shaped surface of the lamp cover are continuously brushed during the rotation of the spiral blade, thereby effectively preventing dust adhesion from affecting the photocatalytic reaction, ensuring that the purification device can maintain a good air purification effect for a long time.

[0029] (5) By setting up an air quality sensor, the air quality of the environment in which the device is located is automatically detected, and the information data is transmitted to the control module, so that the control module can adjust various parameters by itself, thereby realizing the function of intelligently adjusting the purification effect according to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional schematic diagram of this patent.

[0031] Figure 2 This is a top view of the patent.

[0032] Figure 3 for Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0033] Figure 4 for Figure 2 Three-dimensional cross-sectional view at the middle BB.

[0034] Figure 5 This is an exploded view of this patent.

[0035] Figure 6 This is an exploded view from another perspective of this patent.

[0036] Figure 7 This is a schematic diagram of the internal structure of this patent.

[0037] Figure 8 This is a schematic diagram of the structure of the main barrel cover.

[0038] Fig. 9 It is a schematic diagram of the structure of the spiral blade.

[0039] Explanation of the reference numerals: outer shell 10; main cover 11; auxiliary cover 12; control panel 13; external air inlet 14; external exhaust port 15; internal air inlet 16; internal exhaust port 17; fan 18; sealing gasket 19; auxiliary barrel cover 20; main barrel cover 21; lamp cover 22; U-shaped lamp tube 23; lamp housing 24; spiral blade 25; bearing 26; flexible brush 27; partition 28; power module 29; control module 30; second bracket 31; bottom shell 32; wiring slot 33; air quality sensor 34; first bracket 35. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] Embodiment 1:

[0042] like Figure 1-9 As shown, an active air purification device includes a shell 10, a partition 28 is fixedly connected to the shell 10, and the internal space of the shell 10 is divided into a purification chamber and a control chamber by the partition 28. A main barrel cover 21 is fixedly connected to the purification chamber in the shell 10, and a secondary barrel cover 20 is fixedly connected to the top of the main barrel cover 21. The secondary barrel cover 20 and the arc part of the main barrel cover 21 are assembled into two cylindrical chambers, and the inner wall of the cylindrical chamber is coated with a catalyst coating. Two transparent lampshades 22 are fixedly connected to the two sides of the cylindrical chamber of the main barrel cover 21, and each lampshade 22 is consistent with the shape of the cylindrical chamber. A U-shaped lamp tube 23 is fixedly connected to the partition 28 at the corresponding position of each lampshade 22, and a lamp shell 24 that fits the outer side of the main barrel cover 21 is fixedly connected to the outer side of each U-shaped lamp tube 23, and each lamp shell 24 is fixedly connected to the outer side of the main barrel cover 21, and each lamp shell 24 is fixed to the shell 10 by a first bracket 35.

[0043] By providing the main tube cover 21 and the U-shaped lamp tube 23, the U-shaped lamp tube 23 can be used to irradiate the catalyst coating to generate strong oxidizing hydroxyl radicals, which can be used to oxidize and decompose pollutants into harmless substances, thereby achieving an air purification effect.

[0044] By providing the lampshade 22 and the lamp housing 24, the light-emitting part of the U-shaped lamp tube 23 is completely wrapped and protected, which prevents the U-shaped lamp tube 23 from being damaged by bumps and effectively prevents dust in the air from accumulating and adhering to the surface of the light-emitting part of the U-shaped lamp tube 23, thereby preventing dust from shielding and affecting the light catalytic efficiency. At the same time, there is no need to frequently clean the device to ensure a stable and good purification effect, thereby improving the user experience.

[0045] like Figure 1-9 As shown, in this embodiment, the preferred catalyst coating is composed of TiO2 as a photocatalyst and SiO2 as a protective agent, and the U-shaped lamp tube 23 generates an ultraviolet band of 200-280nm and a near-ultraviolet band of 280-400nm respectively.

[0046] By controlling the U-shaped lamp tube to accurately generate two different wavelengths of light, the light energy of the two wavelengths can effectively excite TiO2 to produce electron-hole pairs, and then produce hydroxyl free radicals to effectively treat and kill gaseous pollutants and microorganisms such as viruses in the gas, thereby effectively improving the ability to purify air quality.

[0047] like Figure 1-9 As shown, a spiral blade 25 is rotatably connected between the partition 28 and the outer shell 10 in each cylindrical chamber, and bearings 26 are connected at both ends of each spiral blade 25. An internal air inlet 16 is opened on the partition 28 at a corresponding position of each spiral blade 25, and an internal exhaust port 17 is opened on the end of the auxiliary cylinder cover 20 away from the internal air inlet 16. A fan 18 is fixedly connected to the auxiliary cylinder cover 20, and a sealing gasket 19 is padded between the fan 18 and the auxiliary cylinder cover 20. A flexible brush 27 is fixedly connected to the edge of the spiral blade 25, and each flexible brush 27 is in contact with the corresponding inner wall of the cylindrical chamber. In this embodiment, the spiral blade 25 and the lamp cover 22 are preferably made of colorless and transparent polypropylene.

[0048] By providing the fan 18, air can be sucked into the cylindrical chamber from the inner air inlet 16 and discharged from the inner exhaust port 17, so that external air can continuously enter the cylindrical component for purification. By providing the spiral blades 25, when the fan 18 is running in the cylindrical chamber to form an airflow, the airflow can be used to drive the spiral blades 25 to rotate. While the spiral blades 25 are rotating, the airflow speed can be reduced, and the airflow can be stirred and dispersed so that the air can fully contact and react with the hydroxyl free radicals, thereby improving the air purification effect.

[0049] Furthermore, the spiral blades 25 and the lampshade 22 are made of colorless and transparent polypropylene material, thereby ensuring that the light generated by the U-shaped lamp tube 23 can effectively irradiate the surface of the catalyst coating to generate hydroxyl radicals, and the polypropylene material itself has an aging-resistant property, thereby effectively preventing the lampshade 22 and the spiral blades 25 from aging and yellowing and affecting the photocatalytic reaction. Furthermore, by providing a flexible brush 27, the arc-shaped surfaces of the secondary barrel cover 20, the main barrel cover 21 and the lampshade 22 are continuously brushed during the rotation of the spiral blades 25, thereby effectively preventing dust from adhering to the photocatalytic reaction and ensuring that the purification device can maintain a good air purification effect for a long time.

[0050] like Figure 1-9 As shown, a second bracket 31 is fixedly connected to the control chamber in the shell 10, and a power module 29 is fixedly connected to the second bracket 31. Optionally, the power module 29 is a lithium battery. A bottom shell 32 is fixedly connected to the bottom of the shell 10 at a position corresponding to the power module 29. A control module 30 is fixedly arranged on one side of the power module 29. The control module 30 is connected to each electrical component in the device. A main cover 11 is fixedly connected to the top of the shell 10, and a sub-cover 12 is fixedly connected to the upper side of the main cover 11. A control panel 13 connected to the control module 30 is fixedly connected at the center of the sub-cover 12.

[0051] By setting up a power module 29 to provide electric energy, and through the control module 30, the fan 18 can be controlled to control the airflow rate, and the U-shaped lamp tube 23 can be controlled to control the light band, and the wavelength of light can be adjusted according to the refractive index compensation of the lampshade 22 and the spiral blade 25, so that the light band irradiated on the catalyst coating is stable and appropriate, and by setting up the control panel 13, the user can use the device conveniently and adjust various parameters conveniently, thereby improving the user experience.

[0052] like Figure 1-9 As shown, an external exhaust port 15 connected to the purification chamber is provided on one side of the main cover 11, external air inlets 14 connected to the control chamber are symmetrically provided on both sides of the outer shell 10, and a wiring slot 33 for convenient wiring harness plugging is provided at a position corresponding to the control module 30 at the bottom of the outer shell 10, and an air quality sensor 34 is fixedly connected near a group of external air inlets 14 in the control chamber of the outer shell 10, and the air quality sensor 34 is connected to the control module 30 through a wire.

[0053] By setting up an external air inlet 14 and an external air outlet 15, large pieces of foreign matter can be effectively blocked from entering the device, while ensuring smooth intake and exhaust. Moreover, when the outside air enters the control chamber through the external air inlet 14, the energized components can be cooled down, thereby avoiding overheating of the device. Furthermore, by setting up an air quality sensor 34, the air quality of the environment in which the device is located can be automatically detected, and the information data can be transmitted to the control module 30, so that the control module 30 can adjust various parameters by itself, thereby realizing the function of intelligently adjusting the purification effect according to the environment.

[0054] In this embodiment, when in use, the user places the device in an environment that needs to be purified, and can optionally plug the wiring harness to the control module 30 for power supply or use the power module 29 for temporary power supply. The user turns on the device through the control panel 13, and the fan 18 first runs to continuously draw air, so that the external air of the device first enters the control chamber from the external air inlet 14, and then enters the cylindrical chamber coated with the catalyst coating through the internal air inlet 16 for purification, and flows axially in the cylindrical chamber until it flows out from the internal exhaust port 17, and is finally discharged from the external exhaust port 15.

[0055] During this process, the U-shaped lamp tube 23 emits two wavelengths of light to irradiate the catalyst coating to produce highly oxidizing hydroxyl radicals, which oxidize and decompose the pollutants into harmless substances. Since the inner surface of the lamp housing 24 is coated with reflective paint, it can reflect the light emitted by the U-shaped lamp tube 23 away from the catalyst coating, thereby improving the light irradiation efficiency. When the air flows in the cylindrical chamber, the airflow drives the spiral blades 25 to rotate, and the spiral blades 25 stir the air so that the air molecules are in full contact with the hydroxyl radicals near the catalyst coating, thereby improving the air purification effect.

[0056] Since the U-shaped lamp tube 23 is tightly covered by the lampshade 22 and the lamp shell 24, the air in the air will not adhere to the surface of the U-shaped lamp tube 23, and the bearing 26 continuously brushes the surface of the auxiliary tube cover 20, the main tube cover 21 and the lampshade 22 during the rotation of the spiral blade 25, thereby effectively preventing dust from adhering to the cylindrical chamber and affecting the photocatalytic effect, thereby ensuring the continuous and stable generation of hydroxyl free radicals, so as to ensure that the device still maintains a good purification effect after long-term use.

[0057] During the operation of the device, the air quality sensor 34 continuously detects the air quality entering the control chamber through the external air inlet 14, and converts the control quality information into an electrical signal and transmits it to the control module 30. The control module 30 automatically adjusts the speed of the fan 18 and the light band of the U-shaped lamp tube 23 according to the control quality information, and specifically adjusts the purification process.

[0058] The above-mentioned fan 18, power module 29, control module 30, air quality sensor 34, etc. are mature existing technologies. The structures in the drawings are only for illustration and will not be described in detail herein.

[0059] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0060] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0061] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. An active air purification device, characterized in that: The active air purification device comprises: A shell (10), wherein a main cover (11) is fixedly connected to the top of the shell (10), and a partition (28) is fixedly connected inside the shell (10) and the main cover (11); A main barrel cover (21), wherein a secondary barrel cover (20) is fixedly connected to the main barrel cover (21), and the secondary barrel cover (20) and the arc-shaped part of the main barrel cover (21) are combined to form two cylindrical chambers; The partition plate (28) is fixedly connected to U-shaped lamp tubes (23) at both sides of the two cylindrical chambers of the main barrel cover (21), a lamp shell (24) for covering the U-shaped lamp tube (23) is fixedly connected to the outside of the main barrel cover (21) at a position corresponding to each U-shaped lamp tube (23), and the inner sides of the arc-shaped parts of the main barrel cover (21) and the auxiliary barrel cover (20) are coated with a catalyst coating.

2. An active air purification device according to claim 1, characterized in that: The U-shaped lamp tube (23) generates an ultraviolet band of 200-280 nm and a near-ultraviolet band of 280-400 nm respectively.

3. The active air purification device according to claim 1, characterized in that: An inner air inlet (16) is provided on the partition (28) at a position corresponding to the cylindrical chamber formed by the main cylinder cover (21) and the auxiliary cylinder cover (20), and a through inner air outlet (17) is provided at one end of the auxiliary cylinder cover (20) away from the inner air inlet (16). A spiral blade (25) is rotatably connected to the inside of each cylindrical chamber between the partition (28) and the inner wall of the outer shell (10).

4. The active air purification device according to claim 1, characterized in that: The outer wall of the main tube cover (21) is fixedly connected to a lampshade (22) at a position corresponding to each U-shaped lamp tube (23); the inner wall of each lampshade (22) is in conformity with the inner wall of the main tube cover (21); the inner side of each lamp housing (24) is coated with a reflective coating; the outer side of each lamp housing (24) is fixedly connected to a first bracket (35) fixedly connected to the outer shell (10); and each lampshade (22) and spiral blade (25) are made of transparent material.

5. The active air purification device according to claim 3, characterized in that: A flexible brush (27) is fixedly connected to the edge of the spiral blade (25); the flexible brush (27) is made of a flexible material and is in close contact with the inner wall of a cylindrical chamber formed by the secondary barrel cover (20) and the main barrel cover (21).

6. The active air purification device according to claim 3, characterized in that: The top of the secondary tube cover (20) is fixedly connected to a fan (18); the space in the outer shell (10) located on one side of the partition (28) for placing the U-shaped lamp tube (23) is a purification chamber; the space in the outer shell (10) located on one side of the partition (28) where the U-shaped lamp tube (23) is not placed is a control chamber; the main cover (11) is provided with an external exhaust port (15) in communication with the purification chamber; and the outer shell (10) is provided with external air inlets (14) in communication with the control chamber on both sides.

7. An active air purification device according to claim 6, characterized in that: A second bracket (31) is fixedly connected in the control chamber, a power module (29) is fixedly connected in the second bracket (31), a bottom shell (32) is fixedly connected to the bottom of the housing (10) below the power module (29), a control module (30) connected to each electrical component is arranged at one end of the power module (29), and a wiring slot (33) is provided at the outer bottom of the housing (10) at a position corresponding to the control module (30).

8. An active air purification device according to claim 7, characterized in that: An air quality sensor (34) is fixedly connected to the control chamber in the housing (10); the air quality sensor (34) is located near one of the groups of external air inlets (14); and the air quality sensor (34) is connected to the control module (30).

9. The active air purification device according to claim 7, characterized in that: The top of the main cover (11) is fixedly connected to a sub-cover (12), the center of the sub-cover (12) is fixedly connected to a control panel (13), and the control panel (13) is connected to a control module (30).

10. The active air purification device according to claim 5, characterized in that: A sealing gasket (19) is provided between the fan (18) and the auxiliary cylinder cover (20), and two groups of bearings (26) are fixedly connected to the partition plate (28) and the inner wall of the outer shell (10) at positions corresponding to each spiral blade (25), and each group of the bearings (26) is rotatably connected to the corresponding rotating shaft part of the spiral blade (25).

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