Air purification device and three-dimensional printing system

Abstract

The utility model relates to an air purification device and a three-dimensional printing system, and the air purification device comprises an outer cylinder which is provided with an air supply channel; the inner barrel is arranged in the air supply channel, and the air supply channel is divided into a first airflow channel and a second airflow channel by the inner barrel; the purification assembly is arranged in the air supply channel and comprises an illumination module, a photocatalyst carrier module and an ozone generation module, the ozone generation module is arranged in the second airflow channel, and ozone generated by the ozone generation module flows to the first airflow channel from the second airflow channel. Inlet air flow of the air supply channel can smoothly enter the first air flow channel and the second air flow channel, the air inlet efficiency is improved, air is rapidly purified, meanwhile, ozone enters the first air flow channel from the second air flow channel, decomposition of harmful substances can be enhanced, and the purification effect is improved.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and in particular to an air purification device and a 3D printing system. Background Technology

[0002] With the popularization of 3D printing technology, more and more companies and individuals are joining the field. However, during the use of 3D printers, the consumables themselves or the reaction process may release irritating gases (such as VOCs), which can reduce the air quality of the 3D printed parts or the printing space. When the printing space is poorly ventilated, workers in the printing space may experience physical discomfort, and in severe cases, it may even endanger their health.

[0003] In related technologies, air purification devices are installed in the printing space to purify the air. However, existing air purification devices suffer from high air intake resistance due to limited internal space and obstruction of airflow by internal components, which affects purification efficiency. Utility Model Content

[0004] This application provides an air purification device and a 3D printing system to solve the technical problems of high air intake resistance and low purification efficiency in existing air purification devices.

[0005] In a first aspect, this application provides an air purification device, comprising:

[0006] The outer cylinder is equipped with an air supply channel;

[0007] An inner cylinder, disposed within the air supply duct, divides the air supply duct into a first airflow channel and a second airflow channel; and

[0008] The purification component is located in the air supply channel. The purification component includes a light module, a photocatalyst carrier module, and an ozone generation module. The ozone generation module is located in the second airflow channel, and the ozone generated by the ozone generation module flows from the second airflow channel to the first airflow channel.

[0009] In one possible implementation, the air purification device further includes a first air inlet and a first air outlet, the first air inlet being connected to a first airflow channel and the first air outlet being connected to the first airflow channel.

[0010] In one possible implementation, the outer cylinder includes a body and a cover plate connected together, a first air inlet is disposed on the body, a first air outlet is disposed on the cover plate, and the cover plate is disposed on the side of the inner cylinder away from the first air inlet.

[0011] In one possible implementation, the air purification device further includes a base, with an outer cylinder and an inner cylinder respectively connected to the base.

[0012] In one possible implementation, the first air inlet is located on the base, and the first air outlet is located on the outer cylinder.

[0013] In one possible implementation, the air purification device further includes a second air inlet and a second air outlet. The second air inlet is connected to a second airflow channel, and the second air outlet is connected to a first airflow channel and a second airflow channel, so that the ozone generated by the ozone generating module flows from the second air outlet to the first airflow channel.

[0014] In one possible implementation, both the second air inlet and the second air outlet are located within the inner cylinder; or the second air inlet is located on the base, and the second air outlet is located within the inner cylinder. 。

[0015] In one possible implementation, both the light module and the photocatalyst carrier module are disposed in the first airflow channel, and the light module is configured to emit light of a preset wavelength to the photocatalyst carrier module.

[0016] In one possible implementation, the air purification device further includes a base, a photocatalyst carrier module disposed on the outer periphery of the inner cylinder, and a light module mounted on the base and disposed opposite to the photocatalyst carrier module.

[0017] In one possible implementation, the photocatalyst carrier module covers the second air outlet.

[0018] In one possible implementation, the ozone generating module includes a housing and an ozone generating module, with the ozone generating module installed inside the housing; the housing is disposed inside the inner cylinder and is detachably connected to the inner cylinder.

[0019] In one possible implementation, the purification component includes an ozone oxidation module configured to react with ozone generated by an ozone generating module to generate a strong oxidizing substance, which is used to purify unreacted harmful substances in the airflow exiting the first airflow channel.

[0020] In one possible implementation, the purification component includes an ozone decomposition module and an ozone oxidation module stacked together. The ozone decomposition module is configured to catalytically decompose incompletely reacted ozone in the airflow flowing out of the first airflow channel.

[0021] In one possible implementation, the base is provided with a receiving cavity and a partition covering the receiving cavity. A drive circuit board is provided inside the receiving cavity. The drive circuit board is electrically connected to the light module and the ozone generating module. The partition is used to block the receiving cavity and the second airflow channel.

[0022] In one possible implementation, a fan assembly is also included, which is disposed on the outside of the outer cylinder.

[0023] Secondly, this application provides a three-dimensional printing system, including a three-dimensional printing device, a printing space, and an air purification device as described above. The three-dimensional printing device is disposed in the printing space, and the air supply channel of the air purification device is connected to the printing space.

[0024] The technical solutions provided in this application have the following advantages compared with the prior art:

[0025] The air purification device provided in this application embodiment allows air in the printing space of the 3D printing equipment to enter the air supply channel through a first air inlet. A portion of the air flows into the first airflow channel, where organic compounds (such as volatile organic compounds, VOCs) and some inorganic compounds are decomposed by strong oxidizing substances, thus filtering and purifying harmful substances such as volatile organic compounds. Another portion of the air flows into the second airflow channel, where ozone is generated by the electrolysis of oxygen in the ozone generation module. This ozone then flows from the second airflow channel into the first airflow channel with the airflow. The ozone enhances the reaction efficiency of the photocatalyst, thereby strengthening the decomposition of harmful substances and further improving the purification effect of the air purification device. The purified air is finally discharged into the printing space of the 3D printing equipment through the first air outlet, thus protecting the health of the workers in the printing space. Because the airflow between the first and second airflow channels does not interfere with each other, the airflow in the supply channel can smoothly enter both channels, improving the intake efficiency and enabling the air purification device to quickly purify the air in the printing space. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] One or more embodiments are illustrated by way of example with the corresponding pictures in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent the same or similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0029] Figure 1 A front view of an air purification device provided in an embodiment of this application, wherein the outer casing is not shown;

[0030] Figure 2 For along Figure 1 A cross-sectional view along the AA direction;

[0031] Figure 3 for Figure 2 The diagram shown illustrates the working principle of the air purification device, where the arrows indicate the direction of airflow.

[0032] Figure 4 for Figure 1 The diagram shown is an exploded view of the air purification device.

[0033] Figure 5 This is a schematic diagram illustrating the working principle of an air purification device provided in another embodiment of this application, wherein the arrow indicates the direction of airflow.

[0034] Figure 6 Partial structural explosion of the air purification device provided in the embodiments of this application Figure 1 ;

[0035] Figure 7 Partial structural explosion of the air purification device provided in the embodiments of this application Figure 2 ;

[0036] Figure 8 An exploded view of the structure of an air purification device provided in another embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Inner cylinder; 11. Second air outlet; 12. First retaining block; 13. Second retaining groove; 14. First positioning hole;

[0039] 2. Outer cylinder; 201. First airflow channel; 202. Second airflow channel; 21. Cover plate; 211. First air outlet; 22. Body; 221. First air inlet;

[0040] 3. Purification components; 31. Illumination module; 311. Lamp panel; 3111. Second positioning hole; 312. Heat sink; 32. Photocatalyst carrier module; 321. Photocatalyst substrate; 33. Ozone generating module; 331. Box body; 3311. First positioning post; 332. Ozone generating unit; 34. Ozone oxidation module; 35. Ozone decomposition module;

[0041] 4. Base; 41. Second air inlet; 42. First slot; 43. Mounting slot; 44. Receiving cavity; 45. Partition; 46. Drive circuit board;

[0042] 5. Fan assembly;

[0043] 6. Cover; 61. Front panel; 611. Display panel; 62. Rear panel; 63. Top panel; 64. Side panel. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0046] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0047] To address the technical problems of high air intake resistance and low purification efficiency in existing air purification devices, this application provides an air purification device and a 3D printing system. The air purification device includes: an outer cylinder with an air supply channel; an inner cylinder disposed within the air supply channel, dividing the air supply channel into a first airflow channel and a second airflow channel; and a purification component disposed within the air supply channel. The purification component includes a light-emitting module, a photocatalyst carrier module, and an ozone-generating module. The ozone-generating module is disposed in the second airflow channel, and the ozone generated by the ozone-generating module flows from the second airflow channel to the first airflow channel. Since the airflow between the first and second airflow channels does not interfere with each other, the airflow from the air supply channel can smoothly enter both the first and second airflow channels, thereby improving the air intake efficiency. The air purification device can quickly purify the air in the printing space. Simultaneously, ozone, carried by the airflow from the second airflow channel into the first airflow channel, can enhance the reaction efficiency of the photocatalyst, strengthen the decomposition of harmful substances, and further improve the purification effect of the air purification device.

[0048] like Figures 1 to 4 As shown in the illustration, this application provides an air purification device, including an outer cylinder 2, an inner cylinder 1, and a purification component 3. The outer cylinder 2 is provided with an air supply channel, which communicates with the printing space where the 3D printing equipment is located. During the use of the 3D printing equipment, the printing material itself or its melting, deposition, curing, and cross-linking reactions during printing may release irritating gases, causing the air in the printing space where the 3D printing equipment is located to contain harmful substances such as volatile organic compounds (VOCs). The air purification device provided in this application can purify the aforementioned harmful substances such as VOCs, making them meet emission standards.

[0049] 3D printing equipment includes various types such as stereolithography (SLA), digital light processing (DLP), liquid crystal display (LCD), fused deposition modeling (FDM), polymer jetting (PolyJet), multi-nozzle fusion printing (MJP), multi-jet fusion molding (MJF), and selective laser sintering (SLS). Printing materials include plastics, resins, granules, nylon, fibers, and metals.

[0050] like Figures 2 to 4As shown, the outer cylinder 2 is provided with an air supply channel, and the inner cylinder 1 is disposed in the air supply channel. The inner cylinder 1 divides the air supply channel into a first airflow channel 201 and a second airflow channel 202. The outer cylinder 2 and the inner cylinder 1 define the first airflow channel 201 on their outer sides, and define the second airflow channel 202 on the inner cylinder 1 on its inner side. The purification component 3 is disposed in the air supply channel. The purification component 3 includes a light irradiation module 31, a photocatalyst carrier module 32, and an ozone generation module 33. The photocatalyst carrier module 32 is loaded with a photocatalyst (such as titanium dioxide or tungsten oxide). Both the light irradiation module 31 and the photocatalyst carrier module 32 are disposed in the first airflow channel 201. The light irradiation module 31 is configured to emit light of a preset wavelength (such as ultraviolet light) to the photocatalyst carrier module 32. When the light of the preset wavelength irradiates the photocatalyst loaded on the photocatalyst carrier module 32, the photocatalyst can generate highly oxidizing substances, such as hydroxyl radicals (·OH) and oxygen negative ions (·O2), under light irradiation. - It can be used to decompose organic compounds (such as volatile organic compounds, VOCs) and some inorganic compounds, and can filter and purify harmful substances such as volatile organic compounds in the air, thereby improving the purification effect of air purification devices. The ozone generating module 33 is set in the second airflow channel 202, and the ozone generated by the ozone generating module 33 flows from the second airflow channel 202 to the first airflow channel 201. The ozone generating module 33 can be an ozone generator based on the principle of oxygen electrolysis, and can generate ozone amounts of 5mg / h-500mg / h, such as 20mg / h, 50mg / h, 80mg / h, 120mg / h, 200mg / h, 300mg / h, 350mg / h, 400mg / h, 450mg / h, etc.

[0051] It is understandable that, such as Figure 2 and Figure 3 As shown, air in the printing space of the 3D printing equipment enters the air supply channel. Part of the air flows into the first airflow channel 201, where organic compounds (such as volatile organic compounds, VOCs) and some inorganic compounds are decomposed by strong oxidizing substances, thus filtering and purifying harmful substances like volatile organic compounds. Another part of the air flows into the second airflow channel 202, where ozone is generated by the electrolysis of oxygen in the ozone generation module 33. This ozone then flows from the second airflow channel 202 back into the first airflow channel 201. Ozone enhances the reaction efficiency of the photocatalyst, strengthening the decomposition of harmful substances and further improving the purification effect of the air purification device. The purified air is then discharged into the printing space of the 3D printing equipment, protecting the health of the workers in the printing space. Because the airflow between the first and second airflow channels 201 and 202 does not interfere with each other, air can pass smoothly through both channels, improving intake efficiency and enabling the air purification device to quickly purify the air in the printing space.

[0052] It should be noted that photocatalysts, also known as photocatalytic agents, are a general term for semiconductor materials with photocatalytic functions, represented by nano-sized titanium dioxide. Types of photocatalysts can include TiO2 (titanium dioxide), ZrO2 (zirconia), ZnO (zinc oxide), WO3 (tungsten trioxide), Fe2O3 (iron oxide), SnO2 (tin oxide), SiO2 (silicon dioxide), etc. The preset wavelength of light is between 10nm and 780nm, which can be ultraviolet light (UV light) or visible light.

[0053] Furthermore, such as Figure 2 and Figure 4 As shown, the photocatalyst carrier module 32 includes a photocatalyst substrate 321 and a photocatalyst attached to the photocatalyst substrate 321. The photocatalyst substrate 321 can be made of porous foam sheet, which includes, but is not limited to, nickel foam mesh, porous ceramic mesh, polyurethane mesh, etc. The photocatalyst is attached to the internal pores of the porous foam sheet. The photocatalyst includes, but is not limited to, semiconductor materials such as titanium dioxide and tungsten oxide. The photocatalyst attachment process includes, but is not limited to, spraying, electroplating, etc.

[0054] In some preferred embodiments of this application, the photocatalyst loaded in the photocatalyst carrier module 32 is titanium dioxide, and the light emitted by the light irradiation module 31 is UV light of a preset wavelength. The hydroxyl radicals and superoxide anions generated by the reaction of UV light with the titanium dioxide in the photocatalyst carrier module 32 react chemically with VOCs molecules volatilized from printing consumables (such as photosensitive resin, ABS, nylon, plastic particles, etc.) to transform them into harmless water and carbon dioxide molecules, resulting in higher purification efficiency and better air purification effect. Furthermore, titanium dioxide does not undergo photocorrosion under ultraviolet light irradiation and has good acid and alkali resistance and stable chemical properties, enabling it to maintain long-term catalytic activity during use.

[0055] In some embodiments, such as Figure 2 and Figure 3 As shown, the air purification device includes a first air inlet 221 and a first air outlet 211. The first air inlet 221 is connected to a first airflow channel 201, and the first air outlet 211 is connected to the first airflow channel 201. Air can enter the first airflow channel 201 from the first air inlet 221. Organic compounds (such as volatile organic compounds, VOCs) and some inorganic compounds in the air are decomposed by strong oxidizing substances, thereby filtering and purifying harmful substances such as volatile organic compounds in the air. The purified air flows out from the first air outlet 211.

[0056] In some embodiments, the first air inlet 221 is provided with a dust filter element, such as dustproof cotton, dustproof cover, dustproof belt, etc., to adsorb or filter dust, large particulate matter, inorganic compounds, etc. in the air, so as to prevent them from entering the airflow channel and contaminating the purification module, thereby improving the life of the purification module.

[0057] In one exemplary embodiment, such as Figures 2 to 4 As shown, the outer cylinder connects the main body 22 and the cover plate 21. The first air inlet 221 is located on the main body 22, and the first air outlet 211 is located on the cover plate 21. The cover plate 21 is located on the side of the inner cylinder 1 away from the first air inlet 221. This arrangement allows the first air outlet 211 to be as far away from the inner cylinder as possible, resulting in a longer airflow path in the first airflow channel 201. This increases the contact time between the air and the photocatalyst carrier module 32, allowing volatile harmful substances in the air to be decomposed by strong oxidizing substances as much as possible, thereby improving filtration and purification efficiency.

[0058] The main body 22 can be configured as a circular cylinder with openings at both ends, and the cover plate 21 can be configured as a circular cover plate 21. The main body 22 and the cover plate 21 can be configured as an integral part.

[0059] In some embodiments, such as Figure 4 As shown, the air purification device also includes a base 4, with the outer cylinder 2 and inner cylinder 1 connected to the base 4 respectively. The base 4 provides support and protection for the outer cylinder 2 and inner cylinder 1.

[0060] In an optional embodiment, the first air inlet 221 may also be disposed on the base 4, and the first air outlet 211 may be disposed on the outer cylinder 2. Specifically, the first air inlet 221 and the first air outlet 211 are disposed opposite each other in the height direction of the outer cylinder 2 to improve the smoothness of airflow in the first airflow channel 201.

[0061] In some embodiments, the air purification device further includes a second air inlet 41 and a second air outlet 11. The second air inlet 41 is connected to a second airflow channel 202, and the second air outlet 11 is connected to a first airflow channel 201 and a second airflow channel 202, so that the ozone generated by the ozone generating module 33 flows from the second air outlet 11 to the first airflow channel. In one example, the second air inlet 41 may be directly connected to the printing space, such as... Figure 3 and Figure 4 As shown, the second air inlet 41 is located on the base 4, and the second air outlet 11 is located in the inner cylinder. This allows air from the printing space to enter the second airflow channel through the second air inlet 41, where it is used by the ozone generating module to generate ozone. The ozone then flows with the airflow from the second air outlet 11 into the first airflow channel 201, thereby improving the purification effect. In another example, the second air inlet 41 can also be connected to the first airflow channel 201, such as... Figure 5As shown, the second air inlet 41 and the second air outlet 11 are both located in the inner cylinder, so that the air in the first airflow channel 201 enters the second airflow channel 202 from the second air inlet 41.

[0062] The photocatalyst carrier module 32 covers the second air outlet 11. Specifically, the photocatalyst substrate 321 covers the second air outlet 11, allowing ozone to directly contact the photocatalyst on the photocatalyst substrate 321, thereby enhancing the reaction efficiency of the photocatalyst. The connection between the inner cylinder 1 and the base 4 includes methods such as slot fixing, screw tightening, magnetic connection, and adhesive bonding. For example, as shown... Figure 4 and Figure 6 As shown, the base 4 is provided with a first slot 42, and the bottom end of the inner cylinder 1 is provided with a first locking block 12 that is adapted to engage with the first slot 42. The connection methods between the outer cylinder 2 and the base 4 include slot fixing, screw tightening, magnetic connection, adhesive bonding, etc., which will not be described in detail here.

[0063] like Figure 2 As shown, the photocatalyst carrier module 32 is disposed on the outer periphery of the inner cylinder 1, and the light-illuminating module 31 is mounted on the base 4 and positioned opposite to the photocatalyst carrier module 32. The photocatalyst substrate 321 is correspondingly positioned to the light-illuminating module 31, as shown below. Figure 1 and Figure 4 As shown, the light emitted by the light module 31 at a preset wavelength can irradiate the photocatalyst substrate 321, causing the photocatalyst attached to the photocatalyst substrate 321 to undergo a photochemical reaction with the light of the preset wavelength (such as UV light), thereby producing a highly oxidizing substance (such as hydroxyl radicals, oxygen, etc.).

[0064] Furthermore, multiple photocatalyst carrier modules 32 and multiple light-illuminating modules 31 can be provided, with each light-illuminating module 31 corresponding to one of the multiple photocatalyst carrier modules 32. For example, such as... Figure 4 As shown, four photocatalyst carrier modules 32 are provided, and the four photocatalyst carrier modules 32 are respectively installed around the inner cylinder 1. In this way, the filtration and purification efficiency can be improved.

[0065] The connection methods between the photocatalyst carrier module 32 and the inner cylinder 1 include slot fixing, screw tightening, magnetic connection, adhesive bonding, etc. For example, such as... Figure 6 As shown, a second slot 13 is provided on the periphery of the inner cylinder 1, and the photocatalyst carrier module 32 is snapped onto the second slot 13 of the inner cylinder 1.

[0066] In some embodiments, such as Figure 6As shown, the ozone generating module 33 includes a housing 331 and an ozone generating unit 332, with the ozone generating unit 332 installed inside the housing 331. The housing 331 is disposed inside the inner cylinder 1 and detachably connected to the inner cylinder 1. Exemplarily, the inner cylinder 1 is provided with a first positioning hole 14, and the housing 331 is provided with a first positioning post 3311 that engages with the first positioning hole 14 to limit the positioning of the housing 331. The inner cylinder 1 is provided with a first connecting hole, and the housing 331 is provided with a second connecting hole corresponding to the first connecting hole. Bolts are provided on the first and second connecting holes to fix the housing 331 to the inner cylinder 1.

[0067] In some embodiments, such as Figure 6 and Figure 7 As shown, the illumination module 31 includes a connected lamp board 311 and a heat sink 312. A mounting groove 43 is provided on the base 4, and the end of the lamp board 311 closest to the base 4 is embedded in the mounting groove 43. A second positioning hole 3111 is provided on the end of the lamp board 311 furthest from the base 4, and a second positioning post connected to the second positioning hole 3111 is provided on the side of the cover plate 21 facing the base 4. The lamp board 311 can adopt a COB light source arrangement. A COB light source is a high-efficiency integrated surface light source in which LED chips are directly mounted on a highly reflective mirror metal substrate, offering advantages such as small size, concentrated energy, and ease of driving. The lamp board 311 and the heat sink 312 are tightly fixed with thermally conductive silicone grease, thereby achieving efficient heat dissipation of the lamp board 311.

[0068] In some preferred embodiments of this application, the distance between the lamp plate 311 and the photocatalyst substrate 321 is 3mm-10mm, which allows light of a preset wavelength to effectively illuminate the photocatalyst substrate 321. It is understood that a distance that is too large results in some energy being wasted from the light radiated by the illumination module 31, hindering energy utilization, while a distance that is too small may prevent the light emitted by the illumination module 31 from reaching all areas of the photocatalyst substrate 321 (or the catalyst on it) with the predetermined energy.

[0069] It should be noted that, Figure 6 and 7 The ozone generating module 33 shown is installed inside the inner cylinder 1. That is, the box 331 and the ozone generating unit 332 are installed inside the inner cylinder 1 during use. For illustrative purposes, it is shown on the outside of the inner cylinder 1 in the figure.

[0070] In some embodiments, such as Figure 2 and Figure 4As shown, the purification component 3 also includes an ozone oxidation module 34, which is disposed on the outside of the cover plate 21. The ozone oxidation module 34 is configured to react with the ozone generated by the ozone generating module 33 to generate strong oxidizing substances, such as hydroxyl radical ions and oxygen anions. The hydroxyl radical ions further react with the VOCs that have not fully reacted in the photocatalysis, so that the VOCs can be further purified. Specifically, the ozone oxidation module 34 includes a first honeycomb cell and an ozone oxidation catalyst filled inside the first honeycomb cell. The ozone decomposition catalyst contains at least manganese metal oxide components, so that the ozone from the ozone generating module 33 reacts with the ozone oxidation catalyst in the ozone oxidation module 34 to generate strong oxidizing substances, such as hydroxyl radical ions and oxygen anions, to further purify harmful substances. The first honeycomb cell can be cylindrical or other shapes, and this application does not impose specific limitations on this.

[0071] Optionally, a dustproof cotton is provided between the first honeycomb box and the cover plate 21 to ensure the lifespan of the ozone oxidation catalyst.

[0072] In some embodiments, such as Figure 2 and Figure 4 As shown, the purification component 3 includes an ozone decomposition module 35. The ozone decomposition module 35 and the ozone oxidation module 34 are stacked sequentially on the outside of the cover plate 21. The ozone decomposition module 35 is located on the side of the ozone oxidation module 34 away from the cover plate 21. The ozone decomposition module 35 is configured to catalytically decompose unreacted ozone in the airflow flowing out of the first airflow channel 201, so that the gas discharged from the first air outlet 211 meets the ozone emission standards. Specifically, the ozone decomposition module 35 includes a second honeycomb cell and an ozone decomposition catalyst filled inside the second honeycomb cell. The ozone decomposition catalyst contains at least manganese metal oxide. Ozone may not react completely with the photocatalyst in the photocatalyst substrate 321, and the ozone generated by the ozone generating module 33 may not be completely consumed. Therefore, some ozone may flow out from the first air outlet 211 into the printing space. This part of the ozone reacts with the ozone decomposition catalyst in the ozone decomposition module 35 to decompose the unconsumed ozone, so that the gas discharged from the first air outlet meets the ozone emission standards.

[0073] The upper and lower surfaces of the first and / or second honeycomb cells described above include a mesh. For example, the mesh can be a stainless steel mesh, which can enhance resistance to ozone oxidation and improve service life.

[0074] In some embodiments, the ozone oxidation module 34 and / or the ozone decomposition module 35 have inlets and outlets to allow airflow to enter or leave. For example, the inlet is a mesh structure consisting of multiple holes. The ozone oxidation module 34 is filled with an ozone oxidation catalyst, and the ozone decomposition module 35 is filled with an ozone decomposition catalyst.

[0075] In some embodiments, such as Figure 8 As shown, it also includes a fan assembly 5, which is disposed in the air supply channel. The fan assembly 5 can be used to drive the airflow to move unidirectionally within the air supply channel, thereby realizing the circulation of air between the air supply channel and the printing space.

[0076] It should be noted that the fan assembly 5 may include one or more fans. Along the airflow direction in the air delivery channel, the fan assembly 5 may be located at the upper end of the outer cylinder 2 or at the lower end of the outer cylinder 2, both of which can achieve the purpose of this application.

[0077] In a preferred embodiment, the air supply assembly includes an air inlet side and an air outlet side disposed opposite to each other, and the ozone decomposition module 35 is located on the air inlet side of the fan assembly 5. The ozone decomposition module 35 is disposed close to the air inlet side of the fan assembly 5 so that the air discharged from the air outlet side of the fan assembly 5 meets the ozone emission standards.

[0078] In some embodiments, such as Figure 4 As shown, the base 4 is provided with a receiving cavity 44 and a partition 45 covering the receiving cavity 44. A drive circuit board 46 is disposed inside the receiving cavity 44. The drive circuit board 46 is electrically connected to the light module 31 and the ozone generating module 33, and is used to control the opening and closing of the light module 31 and the ozone generating module 33. The partition 45 is used to block the receiving cavity 44 and the second airflow channel 202. Since ozone accelerates the aging of the drive circuit board 46, by setting the partition 45, ozone in the second airflow channel 202 can be prevented from entering the receiving cavity 44, thereby improving the lifespan of the drive circuit board 46.

[0079] In some embodiments, such as Figure 8 As shown, the air purification device also includes a cover 6, which covers the outside of the outer cylinder to provide protection and enhance the aesthetics of the air purification device.

[0080] In some embodiments, the housing 6 is further provided with a power module and a main control board. The power module is used to provide electrical energy to the entire device. The power module and the main control board are electrically connected. The main control board is electrically connected to the drive circuit board 46. The main control board is electrically connected to the fan assembly 5 and is used to control the rotation of the fan.

[0081] In some embodiments, such as Figure 8 As shown, the cover 6 includes a front panel 66, a rear panel 62, a top panel 63, and two side panels 64, which together form an accommodating space.

[0082] In some embodiments, such as Figure 8As shown, the front panel 61 is also equipped with indicator lights, a display panel 611 and a sensor. The sensor is used to detect the VOCs concentration status. The display panel 611 is electrically connected to the main control board and is used to display air purification information such as the fan speed, timer, network status, and current ambient VOCs concentration. Different functions can be indicated by different colors of the indicator lights.

[0083] This application also provides a 3D printing system, including a 3D printing device, a printing space, and an air purification device as described above. The 3D printing device is disposed in the printing space, and the air supply channel of the air purification device is connected to the printing space to purify and circulate the air inside the printing space, thereby preventing the health of the workers inside the printing space from being affected by long-term inhalation of harmful gases.

[0084] In some embodiments of this application, the printing space is a building space such as a workshop or factory. When the printing space has poor ventilation, the air in the printing space can be purified by an air purification device that is independently encapsulated or integrated into the 3D printing equipment. This can achieve material filtration of large molecular dust impurities and chemical filtration of harmful substances such as volatile organic compounds, which can greatly improve the air purification effect in the printing space. At this time, it is not necessary to place the 3D printing equipment at the window of the printing space, nor is it necessary to discharge harmful gases inside the printing space into the external environment through pipes, thus causing environmental pollution. This reduces the requirements for the operator's operating environment and is more environmentally friendly.

[0085] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0086] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0087] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An air purification device, characterized in that, include: The outer cylinder is provided with an air supply channel; An inner cylinder is disposed in the air supply channel, and the inner cylinder divides the air supply channel into a first airflow channel and a second airflow channel; as well as A purification component is disposed in the air supply channel. The purification component includes a light module, a photocatalyst carrier module, and an ozone generating module. The ozone generating module is disposed in the second airflow channel, and the ozone generated by the ozone generating module flows from the second airflow channel to the first airflow channel.

2. The air purification device according to claim 1, characterized in that, It also includes a first air inlet and a first air outlet, wherein the first air inlet is connected to the first airflow channel and the first air outlet is connected to the first airflow channel.

3. The air purification device according to claim 2, characterized in that, The outer cylinder includes a body and a cover plate connected together. The first air inlet is disposed on the body, the first air outlet is disposed on the cover plate, and the cover plate is disposed on the side of the inner cylinder away from the first air inlet.

4. The air purification device according to claim 2, characterized in that, It also includes a base, and the outer cylinder and the inner cylinder are respectively connected to the base.

5. The air purification device according to claim 4, characterized in that, The first air inlet is located on the base, and the first air outlet is located on the outer cylinder.

6. The air purification device according to claim 4, characterized in that, It also includes a second air inlet and a second air outlet. The second air inlet is connected to the second airflow channel, and the second air outlet is connected to the first airflow channel and the second airflow channel, so that the ozone generated by the ozone generating module flows from the second air outlet to the first airflow channel.

7. The air purification device according to claim 6, characterized in that, Both the second air inlet and the second air outlet are located within the inner cylinder; or The second air inlet is located on the base, and the second air outlet is located on the inner cylinder.

8. The air purification device according to claim 1, characterized in that, Both the light-emitting module and the photocatalyst carrier module are disposed in the first airflow channel, and the light-emitting module is configured to emit light of a preset wavelength to the photocatalyst carrier module.

9. The air purification device according to claim 1, characterized in that, It also includes a base, and the photocatalyst carrier module is disposed on the outer periphery of the inner cylinder; the light module is installed on the base and is disposed opposite to the photocatalyst carrier module.

10. The air purification device according to claim 2, characterized in that, The photocatalyst carrier module covers the second air outlet.

11. The air purification device according to claim 1, characterized in that, The ozone generating module includes a housing and an ozone generating module, with the ozone generating module installed inside the housing. The housing is located inside the inner cylinder and is detachably connected to the inner cylinder.

12. The air purification device according to claim 1, characterized in that, The purification component includes an ozone oxidation module, which is configured to react with the ozone generated by the ozone generating module to generate a strong oxidizing substance. The strong oxidizing substance is used to purify unreacted harmful substances in the airflow flowing out of the first airflow channel.

13. The air purification device according to claim 12, characterized in that, The purification component includes an ozone decomposition module, which is stacked with the ozone oxidation module. The ozone decomposition module is configured to catalytically decompose unreacted ozone in the airflow flowing out of the first airflow channel.

14. The air purification device according to claim 1, characterized in that, It also includes a fan assembly disposed on the outside of the outer cylinder.

15. The air purification device according to any one of claims 1 to 14, characterized in that, It also includes a cover, which is placed over the outside of the outer cylinder.

16. A three-dimensional printing system, characterized in that, It includes a 3D printing device, a printing space, and an air purification device as described in any one of claims 1 to 15, wherein the 3D printing device is disposed in the printing space, and the air supply channel of the air purification device is connected to the printing space.

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