A mobile air purifier
By combining modular design with self-cleaning components, the problems of frequent filter replacement and low purification efficiency are solved, achieving efficient purification and user-friendly air purification effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN ACURA TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-10
AI Technical Summary
Existing air purifier filters are expensive to use and have low efficiency in purifying formaldehyde and bacteria. Traditional air purifiers suffer from frequent filter replacements and poor purification effects.
This portable air purifier features a modular design, combining ultraviolet lamps and graphene-based catalytic filters. It achieves efficient cleaning of the filter media and multi-layer filtration through self-cleaning components, while the ultraviolet lamps perform photocatalytic treatment on the filter element, improving purification efficiency and extending the filter media's lifespan.
It significantly reduces the frequency and cost of filter media maintenance, improves purification efficiency, achieves 360° all-round high-efficiency sterilization and purification effect, and extends the service life of core components.
Smart Images

Figure CN224479804U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purifier technology, specifically a portable air purifier. Background Technology
[0002] An air purifier is a household appliance used to improve indoor air quality. It draws indoor air into the machine through a built-in fan and uses multiple filters to effectively filter particulate matter in the air, including dust, pollen, and bacteria. Activated carbon filters can adsorb harmful gases such as formaldehyde and benzene, as well as odors. After treatment, the purified fresh air is discharged, creating a healthy and comfortable indoor breathing environment for people. Its effect is more significant, especially in homes with heavy air pollution or newly renovated homes.
[0003] Air purifiers are widely used, but they still have certain problems: 1) The cost of filter materials is relatively high; 2) Traditional air purifiers are inefficient at purifying formaldehyde and bacteria. Therefore, in view of the above situation, there is an urgent need to develop a portable air purifier to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content
[0004] The purpose of this invention is to provide a portable air purifier to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable air purifier, comprising a carrier plate, a support frame mounted on the carrier plate, and a top shell mounted on the support frame. An integrally formed partition mesh is provided in the middle of the support frame. The top shell includes an ultraviolet lamp and a filter element. The filter element is inserted into the partition mesh and is detachably connected to the top shell. The lamp is inserted into the filter element and is detachably connected to the middle of the carrier plate. A self-cleaning component, filter material, and air inlet cover are installed sequentially from the inside to the outside on the carrier plate.
[0006] In practical use, a protrusion is provided at the center of the top of the support plate, on which a lamp holder for the ultraviolet lamp is installed. The filter element is stably installed through an integrally formed partition mesh and is detachably connected to the top shell. Combined with the ultraviolet lamp passing through the filter element and being detachably connected to the support plate, and the self-cleaning components, filter media, and air inlet hood integrated sequentially from the inside to the outside on the support plate, the compactness and modularity of the equipment structure are significantly improved. This greatly facilitates the maintenance and replacement of core components. At the same time, the self-cleaning components effectively reduce the maintenance frequency of the filter media, and the ultraviolet lamp can perform photocatalytic treatment on the filter element and directly and efficiently sterilize the air passing through the filter element. The multi-layer filtration and optimized air inlet path work together to ultimately achieve a dual improvement in high-efficiency purification and user-friendliness.
[0007] The self-cleaning component includes a screw, a sliding shaft, a waterproof membrane, and an arc-shaped mounting bracket. The screw is rotatably mounted between the support plate and the top shell. The sliding shaft is vertically fixed between the support plate and the top shell. An internally threaded sleeve is fitted on the screw, and several sliding sleeves are slidably connected to the sliding shaft. The inner side of the waterproof membrane is fixedly connected to the internally threaded sleeve and the sliding sleeves. The arc-shaped mounting bracket is fixed to the outer side of the top of the waterproof membrane, and several equally spaced nozzles are mounted on the outer side of the arc-shaped mounting bracket.
[0008] In practical use, vertical lifting is achieved through the threaded transmission between the screw and the internal threaded sleeve. The sliding sleeve on the linkage shaft drives the waterproof membrane and the fixed arc-shaped mounting bracket to move synchronously, so that the equally spaced nozzles form a dynamic fan-shaped cleaning path along the surface of the filter media. Combined with the waterproof membrane's wrapping and protection of the moving parts and the internal filter element, full coverage and efficient rinsing of the filter media surface are achieved in a compact space, significantly improving the self-cleaning effect and extending the filter media's lifespan, while reducing the frequency and cost of manual maintenance.
[0009] Preferably, the bottom of the support plate is detachably installed with a bottom shell, and two water storage tanks are installed inside the bottom shell. A water pump for supplying water to the nozzles is installed in each water storage tank, and a water collection tray is installed at the top inside the bottom shell.
[0010] In practical use, one water tank equipped with a water pump is used to store water for cleaning the filter media, while the other water tank, together with a water collection tray, is used to collect wastewater after rinsing the filter media.
[0011] Preferably, the support plate is fixed with a support platform for installing filter media, the support plate has several drainage holes, and the support plate is equipped with several bearing seats for installing screws and sliding shafts.
[0012] Preferably, the water collection tray is located below the drain hole, and the drain outlet of the water collection tray is located directly above the water storage tank without a water pump installed.
[0013] In actual use, the water and impurities after rinsing the filter media will be directed into the water collection tray below through the drain hole, and then directed into the water storage tank for storing sewage through the water collection tray.
[0014] Preferably, the separator is a hollow cylindrical structure.
[0015] In practical use, this allows the filter element to be inserted from top to bottom, limiting its position and preventing it from shifting.
[0016] Preferably, the cross-section of the filter media is fan-shaped.
[0017] In practical use, the filter media is made of washable material.
[0018] Preferably, a partition is installed at the bottom of the top shell, forming an independent space between the top shell and the partition. A circular through hole is provided in the middle of both the top shell and the partition. The inner diameter of the circular through hole of the partition is equal to the inner diameter of the partition mesh, and the inner diameter of the circular through hole of the top shell is smaller than the inner diameter of the circular through hole of the partition.
[0019] In actual use, its internal independent space houses the motor assembly for driving the screw to rotate forward and backward, as well as the electronic control module for the air purifier.
[0020] Preferably, the filter element is a hollow cylindrical structure with several equidistant ventilation holes, and the ultraviolet lamp is located inside the filter element without contact between the ultraviolet lamp and the filter element.
[0021] In practical use, the filter element is made of graphene-based catalytic filter mesh, which, when paired with ultraviolet lamps, can achieve photocatalytic effect, effectively improving the formaldehyde decomposition efficiency. The hollow cylindrical filter element forms a uniform flow field through equidistant ventilation holes. Combined with the ultraviolet lamps' suspended, non-contact layout inside the filter element, airflow through the filter element receives high-intensity ultraviolet irradiation from all directions, significantly improving the photocatalytic effect and sterilization efficiency. At the same time, it avoids vibration wear or obstruction problems caused by contact between the lamps and the filter element, extending the service life of the two core components and ensuring the optimal balance between airflow resistance and sterilization effect.
[0022] Preferably, a flow guide is installed on the top shell, and a fan is installed at the bottom of the flow guide.
[0023] In actual use, outside air enters through the air inlet hood on the outer wall of the purifier, passes through the filter material and filter element in sequence, and is discharged through the air outlet between the air guide hood and the top shell under the drive of the fan.
[0024] Preferably, the self-cleaning components are divided into two groups and arranged opposite each other on both sides of the support frame. Each group of self-cleaning components includes a single screw and two sliding shafts, with the single screw and the two sliding shafts arranged in an isosceles triangle shape.
[0025] In practical use, the isosceles triangle stabilizing structure formed by the single screw and the double sliding shafts significantly improves the rigidity of the motion mechanism and suppresses shaking, ensuring that the waterproof membranes and nozzles on both sides maintain high synchronization accuracy during vertical lifting. Combined with the relatively set coverage path, it achieves thorough cleaning of the filter material surface without dead angles, while optimizing the utilization of structural space, extending component life and reducing the failure rate.
[0026] Compared with the prior art, this utility model provides a portable air purifier with the following advantages:
[0027] This air purifier achieves high-rigidity synchronous lifting through a symmetrical isosceles triangular sliding shaft and screw structure with two sets of self-cleaning components. Combined with a waterproof membrane and nozzles, it provides full-coverage dynamic rinsing of the filter material surface, significantly reducing maintenance needs. Meanwhile, the equidistant ventilation holes in the hollow cylindrical filter element, combined with the internal suspended, non-contact ultraviolet lamps, create a 360° uniform flow field and a high-intensity sterilization zone, significantly improving purification efficiency and preventing component wear. The overall compact modular design optimizes the airflow path, and the synergistic effect of self-cleaning, multi-layer filtration, and ultraviolet sterilization ultimately achieves a comprehensive effect of high-efficiency purification, durability, and user-friendliness. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0030] Figure 2 This is an exploded view of the present invention;
[0031] Figure 3 This is a side longitudinal sectional view of the entire utility model;
[0032] Figure 4 This is a schematic diagram showing the positional relationship between the support frame and the self-cleaning component of this utility model;
[0033] Figure 5 This is a schematic diagram showing the positional relationship between the screw, sliding shaft, and bearing plate of this utility model.
[0034] In the diagram: 10, bottom shell; 110, water storage tank; 120, water pump; 130, water collection tray; 20, support plate; 210, support platform; 220, drain hole; 230, shaft seat; 30, support frame; 310, partition net; 40, self-cleaning component; 410, screw; 411, internal threaded sleeve; 420, sliding shaft; 421, sliding sleeve; 430, waterproof membrane; 440, arc-shaped mounting bracket; 441, nozzle; 50, filter media; 60, air inlet hood; 70, top shell; 710, partition plate; 720, ultraviolet lamp tube; 730, filter element; 80, air guide hood; 810, fan. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] Example:
[0038] Please see Figures 1-5 This utility model provides a technical solution: a portable air purifier, including a carrier plate 20, a support frame 30 mounted on the carrier plate 20, and a top shell 70 mounted on the support frame 30. An integrally formed partition net 310 is provided in the middle position of the support frame 30. The top shell 70 includes an ultraviolet lamp tube 720 and a filter element 730. The filter element 730 is inserted into the partition net 310 and is detachably connected to the top shell 70. The lamp tube is inserted into the filter element 730 and is detachably connected to the middle position of the carrier plate 20. A self-cleaning component 40, a filter material 50, and an air inlet cover 60 are installed on the carrier plate 20 from the inside out.
[0039] In practical use, the filter element 730 is stably installed through the integrally molded partition net 310 and detachably connected to the top shell 70. Combined with the ultraviolet lamp tube 720 inserted into the filter element 730 and detachably connected to the support plate 20, and the self-cleaning component 40, filter material 50 and air inlet hood 60 integrated from the inside to the outside on the support plate 20, the compactness and modularity of the equipment structure are significantly improved. This greatly facilitates the maintenance and replacement of core components such as the filter element 730 and ultraviolet lamp tube 720. At the same time, the self-cleaning component 40 effectively reduces the maintenance frequency of the filter material 50, and the ultraviolet lamp tube 720 can perform photocatalytic treatment on the filter element 730 and directly and efficiently sterilize the air passing through the filter element 730. The multi-layer filter material 50 + filter element 730 and the optimized air inlet hood 60 work together to ultimately achieve a dual improvement in efficient purification and user-friendliness.
[0040] The self-cleaning component 40 includes a screw 410, a sliding shaft 420, a waterproof membrane 430, and an arc-shaped mounting bracket 440. The screw 410 is rotatably mounted between the support plate 20 and the top shell 70. The sliding shaft 420 is vertically fixed between the support plate 20 and the top shell 70. An internally threaded sleeve 411 is fitted on the screw 410. Several sliding sleeves 421 are slidably connected to the sliding shaft 420. The inner side of the waterproof membrane 430 is fixedly connected to the internally threaded sleeve 411 and the sliding sleeves 421. The arc-shaped mounting bracket 440 is fixed on the outer side of the top of the waterproof membrane 430. Several equally spaced nozzles 441 are mounted on the outer side of the arc-shaped mounting bracket 440.
[0041] In practical use, vertical lifting is achieved through the threaded transmission of the screw 410 and the internal threaded sleeve 411. The sliding sleeve 421 on the linkage shaft 420 drives the waterproof membrane 430 and the fixed arc-shaped mounting bracket 440 to move synchronously, so that the equally spaced nozzles 441 form a dynamic fan-shaped cleaning path along the surface of the filter material 50. Combined with the waterproof membrane 430 wrapping and protecting the moving parts and the internal filter element 730, full coverage and efficient rinsing of the surface of the filter material 50 are achieved in a compact space, which significantly improves the self-cleaning effect and extends the life of the filter material 50, while reducing the frequency and cost of manual maintenance.
[0042] Preferably, a bottom shell 10 is detachably installed at the bottom of the support plate 20, and two water storage tanks 110 are provided inside the bottom shell 10. A water pump 120 for supplying water to the nozzle 441 is installed in each water storage tank 110, and a water collection tray 130 is installed at the top inside the bottom shell 10.
[0043] In practical use, the water storage tank 110, which is equipped with a water pump 120, is used to store water for cleaning the filter media 50, while the other water storage tank 110, together with the water collection tray 130, is used to collect the wastewater after rinsing the filter media 50.
[0044] Preferably, the support plate 20 is fixedly provided with a support platform 210 for installing filter media 50, the support plate 20 is provided with a plurality of drainage holes 220, and the support plate 20 is provided with a plurality of bearing seats 230 for installing screws 410 and sliding shafts 420.
[0045] Preferably, the water collection tray 130 is located below the drain hole 220, and the drain outlet of the water collection tray 130 is located directly above the water storage tank 110 where the water pump 120 is not installed.
[0046] In actual use, the water and impurities after rinsing the filter media 50 will be introduced into the water collection tray 130 below through the drain hole 220, and then introduced into the water storage tank 110 for storing sewage through the water collection tray 130.
[0047] Preferably, the separator 310 is a hollow cylindrical structure.
[0048] In practical use, it facilitates the insertion of the filter element 730 from top to bottom, and limits the position of the filter element 730 to prevent it from shifting.
[0049] Preferably, the cross-section of the filter material 50 is fan-shaped.
[0050] In practical use, filter media 50 is made of a washable material.
[0051] Preferably, a partition 710 is installed at the bottom of the top shell 70, forming an independent space between the top shell 70 and the partition 710. A circular through hole is provided in the middle of both the top shell 70 and the partition 710. The inner diameter of the circular through hole of the partition 710 is equal to the inner diameter of the partition mesh 310, and the inner diameter of the circular through hole of the top shell 70 is smaller than the inner diameter of the circular through hole of the partition 710.
[0052] In actual use, its internal independent space houses the motor assembly for driving the screw 410 to rotate forward and backward, as well as the electronic control module of the air purifier.
[0053] Preferably, the filter element 730 is a hollow cylindrical structure, and the filter element 730 has several equidistant ventilation holes. The ultraviolet lamp 720 is located inside the filter element 730, and the ultraviolet lamp 720 is not in contact with the filter element 730.
[0054] In practical use, filter element 730 is made of graphene-based catalytic filter mesh. When paired with ultraviolet lamp tube 720, it can achieve photocatalytic effect, effectively improving the formaldehyde decomposition efficiency. The hollow cylindrical filter element 730 forms a uniform flow field through its equidistant ventilation holes. Combined with the ultraviolet lamp tube 720's suspended and non-contact layout inside the filter element 730, airflow through the filter element 730 receives high-intensity ultraviolet irradiation from all directions, significantly improving the photocatalytic effect and sterilization efficiency. At the same time, it avoids vibration wear or obstruction problems caused by contact between the lamp tube 720 and the filter element 730, extending the service life of the two core components and ensuring the optimal balance between airflow resistance and sterilization effect.
[0055] Preferably, a flow guide 80 is installed on the top shell 70, and a fan 810 is installed at the bottom of the flow guide 80.
[0056] In actual use, external air enters through the air inlet 60 through the air inlet on the outer wall of the purifier, passes through the filter material 50 and the filter element 730 in sequence, and is discharged through the air outlet between the air guide 80 and the top shell 70 under the drive of the fan 810.
[0057] Preferably, the self-cleaning components 40 are divided into two groups and arranged opposite each other on both sides of the support frame 30. Each group of self-cleaning components 40 includes a single screw 410 and two sliding shafts 420, with the single screw 410 and the two sliding shafts 420 arranged in an isosceles triangle shape.
[0058] In practical use, the isosceles triangle stable structure formed by the single screw 410 and the double sliding shafts 420 significantly improves the rigidity of the motion mechanism and suppresses shaking, ensuring that the waterproof membranes 430 and nozzles 441 on both sides maintain high synchronization accuracy during vertical lifting. Combined with the relatively set coverage path, it achieves no dead angle cleaning of the filter material 50 surface, while optimizing the utilization rate of structural space, extending the component life and reducing the failure rate.
[0059] Working principle: During operation, outside air enters the purifier through the openings in the side air intake hood 60, and then passes through the arc-shaped filter material 50. During this process, most particulate matter is intercepted by the filter material 50. Next, it enters the filter element 730, where formaldehyde in the air is adsorbed. If necessary, the ultraviolet lamp 720 is activated to enable a photocatalytic reaction in the filter element 730, improving the formaldehyde adsorption efficiency and simultaneously sterilizing the air. Finally, the air, along with the fan 810 and the air guide hood 80, is discharged from the top of the purifier. It should be noted that the self-cleaning function... When the cleaning component 40 is working, the screw 410 is driven to rotate by the motor component inside the top shell 70. This, in conjunction with the internal threaded sleeve 411 and the sliding sleeve 421, causes the waterproof membrane 430 to rise. When it rises to its highest point, the water pump 120, along with the hose, discharges water from the nozzle 441. The cleaning water impacts the inner wall of the filter material 50, washing away the particles and dust adsorbed on its outer wall, thus achieving the self-cleaning effect of the filter material 50 and ensuring its adsorption efficiency. The waterproof membrane 430 prevents water from contaminating the internal filter element 730 and the ultraviolet lamp tube 720, providing an isolation effect.
[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A portable air purifier, characterized in that: The device includes a support plate (20), a support frame (30) mounted on the support plate (20), and a top shell (70) mounted on the support frame (30). An integrally formed partition net (310) is provided through the middle position of the support frame (30). The top shell (70) includes an ultraviolet lamp tube (720) and a filter element (730). The filter element (730) is inserted inside the partition net (310) and is detachably connected to the top shell (70). The lamp tube is inserted inside the filter element (730) and is detachably connected to the middle position of the support plate (20). A self-cleaning component (40), a filter material (50), and an air inlet hood (60) are installed on the support plate (20) from the inside out. The self-cleaning component (40) includes a screw (410), a sliding shaft (420), a waterproof membrane (430), and an arc-shaped mounting bracket (440). The screw (410) is rotatably mounted between the support plate (20) and the top shell (70). The sliding shaft (420) is vertically fixed between the support plate (20) and the top shell (70). An internally threaded sleeve (411) is fitted on the screw (410). Several sliding sleeves (421) are slidably connected on the sliding shaft (420). The inner side of the waterproof membrane (430) is fixedly connected to the internally threaded sleeve (411) and the sliding sleeves (421). The arc-shaped mounting bracket (440) is fixed on the outer side of the top of the waterproof membrane (430). Several equally spaced nozzles (441) are installed on the outer side of the arc-shaped mounting bracket (440).
2. A portable air purifier according to claim 1, characterized in that: The bottom of the support plate (20) is detachably fitted with a bottom shell (10), and two water storage tanks (110) are provided inside the bottom shell (10). A water pump (120) for supplying water to the nozzle (441) is installed in each of the water storage tanks (110), and a water collection tray (130) is installed on the top of the bottom shell (10).
3. A portable air purifier according to claim 1, characterized in that: The support plate (20) is fixed with a support platform (210) for installing filter material (50), and the support plate (20) has a number of drainage holes (220). The support plate (20) is also equipped with a number of bearing seats (230) for installing screws (410) and sliding shafts (420).
4. A portable air purifier according to claim 2, characterized in that: The water collection tray (130) is located below the drain hole (220), and the drain outlet of the water collection tray (130) is located directly above the water storage tank (110) where the water pump (120) is not installed.
5. A portable air purifier according to claim 1, characterized in that: The separator (310) is a hollow cylindrical structure.
6. A portable air purifier according to claim 1, characterized in that: The filter material (50) has a fan-shaped cross-section.
7. A portable air purifier according to claim 1, characterized in that: A partition (710) is installed at the bottom of the top shell (70), and an independent space is formed between the top shell (70) and the partition (710). A circular through hole is provided in the middle of the top shell (70) and the partition (710). The inner diameter of the circular through hole of the partition (710) is equal to the inner diameter of the partition mesh (310), and the inner diameter of the circular through hole of the top shell (70) is smaller than the inner diameter of the circular through hole of the partition (710).
8. A portable air purifier according to claim 1, characterized in that: The filter element (730) is a hollow cylindrical structure, and the filter element (730) has several equidistant ventilation holes. The ultraviolet lamp (720) is located inside the filter element (730), and the ultraviolet lamp (720) is not in contact with the filter element (730).
9. A portable air purifier according to claim 1, characterized in that: A flow guide (80) is installed on the top shell (70), and a fan (810) is installed at the bottom of the flow guide (80).
10. A portable air purifier according to claim 1, characterized in that: The self-cleaning components (40) are divided into two groups and arranged opposite each other on both sides of the support frame (30). Each group of the self-cleaning components (40) includes a single screw (410) and two sliding shafts (420). The single screw (410) and the two sliding shafts (420) are distributed in an isosceles triangle shape.